Communication method and apparatus

Abstract

A communication method and apparatus, applied to the technical field of communications and used for improving communication performance. The method comprises: a first terminal device determining a first sequence, the first sequence being any one of the following: a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data; and sending a first signal, or receiving a first signal, wherein the first signal is generated on the basis of the first sequence, the first signal is carried by a first resource, the first resource is used for carrying at least one sequence, and the at least one sequence includes the first sequence.

Description

Communication method and apparatus

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese Patent Application No. 202410987865.5, filed on July 22, 2024, and entitled “A Communication Method and Apparatus”, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the field of communication technology, and in particular, to a communication method and apparatus. BACKGROUND

[0004] With the development of mobile communication technology, wireless services are increasingly growing and rich, and users' demand for communication performance is also rising. Therefore, how to improve the communication performance is a current research direction. SUMMARY

[0005] Embodiments of the present application provide a communication method and apparatus for improving communication performance.

[0006] In a first aspect, the present application provides a communication method, which is applicable to a first terminal device, for example, can be executed by the first terminal device, or can be executed by an apparatus in the first terminal device. Illustratively, the apparatus in the first terminal device can refer to a component (e.g., a processor, a circuit, a chip, or a chip system, etc.) in the first terminal device, or can also refer to a logical module or software, etc. capable of realizing all or part of the functions of the first terminal device.

[0007] Taking the first terminal device as an execution subject, the method can include: determining, by the first terminal device, a first sequence, the first sequence being any one of a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data; and transmitting a first signal, or receiving a first signal, wherein the first signal is generated based on the first sequence, and the first signal is carried by a first resource, the first resource being used to carry at least one sequence, the at least one sequence including the first sequence.

[0008] Optionally, the at least one sequence can include at least one of a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data. It can be understood that the synchronization sequence, the paging sequence, the random access sequence, the reference signal sequence, the sequence for generating the wake-up signal, the sequence for generating the hybrid automatic repeat request signal, and the sequence for generating the data can be respectively referred to as a type of sequence.

[0009] In the above embodiments of the present application, the first resource can be used to carry multiple types of sequences, which can simplify the resource configuration process and improve communication performance.

[0010] In a possible implementation, the first resource is used to carry the at least one sequence, which can be replaced by: the first resource is used to carry the at least one sequence in multiple cells.

[0011] Through the above implementation, the network devices corresponding to the multiple cells can all transmit the at least one sequence to the first terminal device through the first resource. In this way, the first terminal device does not need to acquire the sequence and the resource carrying the sequence multiple times when moving in the multiple cells, and does not need to frequently perform synchronization, measurement, configuration, and the like. This can simplify mobility management and update, reduce the power consumption of the terminal device and the network device, and improve communication performance.

[0012] In a possible implementation, the first terminal device can be identified by a first identifier in the multiple cells.

[0013] Through the above implementation, the network devices corresponding to the multiple cells can all determine the first terminal device through the first identifier. In this way, the first terminal device does not need to acquire the terminal device identifier multiple times when moving in the multiple cells, which can simplify mobility management and update, reduce the power consumption of the terminal device and the network device, and improve communication performance.

[0014] In a possible implementation, the first terminal device can further receive a first message from the first network device, and the first message includes at least one of the first identifier, information for indicating the at least one sequence, or the first resource. The first identifier is used to identify the first terminal device in the multiple cells, and the multiple cells include a cell corresponding to the first network device.

[0015] By the above implementation manner, at least one of the first identifier, the at least one sequence or the first resource can be configured by the first network device, so that the first terminal device can transmit the at least one sequence to the network devices corresponding to the plurality of cells according to the first identifier and the first resource when moving in the plurality of cells, without frequently performing operations such as synchronization, measurement, configuration and the like, so that the mobility management and update can be simplified, the power consumption of the network device and the terminal device can be reduced, and the communication performance can be improved.

[0016] In a second aspect, a communication method is provided. The method can be applied to a first terminal device, for example, can be executed by the first terminal device, or can be executed by an apparatus in the first terminal device. For example, the apparatus in the first terminal device can refer to a component (for example, a processor, a circuit, a chip, or a chip system, etc.) in the first terminal device, or can also refer to a logical module or software capable of realizing all or part of the functions of the first terminal device.

[0017] For example, the method can include: receiving, by the first terminal device, a first message from a first network device, the first message including at least one of: a first identifier, information indicating at least one sequence, or a first resource, wherein the first identifier is used to identify the first terminal device in a plurality of cells, the first resource is used to carry the at least one sequence in the plurality of cells, the plurality of cells including a cell corresponding to the first network device, and the at least one sequence including at least one of: a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data; and communicating, by the first terminal device, with network devices corresponding to the plurality of cells according to the first message.

[0018] In a possible implementation manner, when communicating with the network devices corresponding to the plurality of cells according to the first message, the first terminal device can determine a first sequence, the first sequence belonging to the at least one sequence, the first sequence being any one of: a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data; and sending, by the first terminal device, a first signal to the first network device, or receiving, by the first terminal device, a first signal from the first network device, wherein the first signal is generated based on the first sequence, and the first signal is carried by the first resource.

[0019] The technical effects achieved by the above second aspect and any possible implementation manner thereof can be referred to the technical effects achieved by the above first aspect and any possible implementation manner thereof, which will not be repeated here.

[0020] In a possible implementation of the first aspect or the second aspect, the first terminal device further receives a second message from the first network device, the second message indicating that the first network device supports the first transmission mode, so that the first terminal device can determine that the first network device supports the first transmission mode.

[0021] In a possible implementation of the first aspect or the second aspect, the first terminal device sends a third message to the first network device, the third message indicating that the first terminal device uses the first transmission mode, so that the first terminal device can request to obtain configuration information of the first transmission mode, such as at least one of a first identifier, information used for indicating at least one sequence, or a first resource.

[0022] In a possible implementation of the first aspect or the second aspect, the third message is carried by a second resource, the third message indicating that the first terminal device uses the first transmission mode; or the third message is carried by a third resource, the third message indicating that the first terminal device uses a second transmission mode, the second transmission mode being different from the first transmission mode.

[0023] By the above implementation, the first terminal device can use different resources to carry the third message to distinguish whether to use the first transmission mode, without carrying additional information, which is beneficial to reduce the network resource overhead.

[0024] In a possible implementation of the first aspect or the second aspect, the third message is generated based on a second sequence, the third message indicating that the first terminal device uses the first transmission mode; or the third message is generated based on a third sequence, the third message indicating that the first terminal device uses a second transmission mode, the second transmission mode being different from the first transmission mode.

[0025] By the above implementation, the first terminal device can use different sequences to generate the third message to distinguish whether to use the first transmission mode, without carrying additional information, which is beneficial to reduce the network resource overhead.

[0026] In a possible implementation of the first aspect or the second aspect, the third message is a random access message. For example, the third message can be a random access message in an initial access procedure.

[0027] In a possible implementation of the first aspect or the second aspect, the third message is scrambled based on first information, the third message indicating that the first terminal device uses the first transmission mode; or the third message is scrambled based on second information, the third message indicating that the first terminal device uses a second transmission mode, the second transmission mode being different from the first transmission mode.

[0028] By the above implementation manner, the first terminal device can scramble the third message by using different information to distinguish whether the first transmission mode is used, without carrying additional information, which is beneficial to reducing the network resource overhead.

[0029] In a possible implementation manner of the above first aspect or the second aspect, the third message is a message Msg3. For example, the third message can be a Msg3 in an initial access procedure.

[0030] In a possible implementation manner of the above first aspect or the second aspect, the first terminal device can further receive a fourth message from the first network device, and the fourth message includes at least one of the following: the second resource, the second sequence, or the first information. Optionally, the fourth message can further include at least one of the following: the third resource, the third sequence, or the second information.

[0031] By the above implementation manner, the second resource, the second sequence and the first information can be predefined or configured by the first network device, which is flexible.

[0032] In a possible implementation manner of the above first aspect or the second aspect, the third message is carried by radio resource control (RRC) signaling. For example, the first terminal device can send the third message to the first network device after initial access is completed or RRC connection is established, without changing the initial access procedure, which is good in compatibility.

[0033] In a possible implementation manner of the above first aspect or the second aspect, the first terminal device can further receive a fifth message from the first network device, and the fifth message includes at least one of the following: an identifier of a network device corresponding to the plurality of cells, an identifier of the plurality of cells, or information indicating that the first transmission mode is allowed to be used.

[0034] In a possible implementation manner of the above first aspect or the second aspect, the at least one sequence includes at least one group of paging sequences, and the first sequence is a first paging sequence in the at least one group of paging sequences, where the first paging sequence is one of at least one paging sequence included in the at least one group of paging sequences, or the first paging sequence is a group of paging sequences in the at least one group of paging sequences.

[0035] The first terminal device receives the first signal can be replaced by: the first terminal device receives the first signal according to the first paging sequence, and the first signal carries a paging message, and the paging message is obtained by mapping the first paging sequence to the first resource.

[0036] In the current paging mechanism, the terminal device needs to blindly check whether there is down control information (DCI) scheduling a paging message; after blindly checking the DCI, it further checks whether the physical downlink shared channel (PDSCH) includes its own identification information; if it is found that the PDSCH includes its own identification information, it is determined that it is paged. Through the above implementation manner, the first terminal device receives the paging message according to the first paging sequence, so that the first terminal device can determine that it is paged by checking that the paging message is mapped from the first paging sequence, without the need for multiple checks, which can simplify the paging mechanism and is beneficial to reducing the power consumption of the terminal device.

[0037] Based on the first aspect or the second aspect, in a possible implementation manner, the first identification is further used for paging the first terminal device in multiple cells.

[0038] Based on the first aspect or the second aspect, in a possible implementation manner, the first terminal device receiving the first signal according to the first paging sequence can be replaced by: the first terminal device checks the paging message according to the first paging sequence; and receiving the paging message according to a checking result, the checking result indicating that the paging message is mapped from the first paging sequence.

[0039] Through the above implementation manner, the first terminal device can determine whether it is paged by checking whether the paging message is mapped from the first paging sequence, without the need for multiple checks, which can simplify the paging mechanism and is beneficial to reducing the power consumption of the terminal device.

[0040] Based on the first aspect or the second aspect, in a possible implementation manner, the identification of at least one paging sequence included in the at least one group of paging sequences is determined by a first identification; and / or, the identification of at least one resource used for carrying at least one paging sequence included in the at least one group of paging sequences is determined by the first identification, and the first identification is used for identifying the first terminal device in multiple cells.

[0041] Through the above implementation manner, there is an association relationship between the first identification and the identification of at least one paging sequence and the identification of at least one resource used for carrying the at least one paging sequence, so that the first terminal device can determine the identification of the paging sequence that can be used by itself and the resource corresponding to the paging sequence that can be used based on the first identification, without the need for configuration by the network device, which can reduce signaling interaction.

[0042] In a possible implementation manner of the first aspect or the second aspect, the first identifier is used to determine the identity of the at least one paging sequence, and the identity of the at least one paging sequence is determined by the first identifier and third information, the third information including a number of paging sequences included in the at least one group of paging sequences and / or a first number, the first number being a number of paging sequences supported to be transmitted in the plurality of cells.

[0043] In a possible implementation manner of the first aspect or the second aspect, the first identifier is used to determine the identity of the at least one resource, and the identity of the at least one resource is determined by the first identifier and fourth information, the fourth information including a number of resources and / or a second number, the second number being a number of resources used to carry the paging sequences transmitted in the plurality of cells.

[0044] In a possible implementation manner of the first aspect or the second aspect, the first identifier is used to determine a receiving mode of the paging message, the receiving mode being receiving the paging message in a synchronous mode, or the receiving mode being receiving the paging message in an asynchronous mode.

[0045] According to the implementation manners, the first identifier is associated with the receiving mode of the paging message, so that the first terminal device can determine the receiving mode of the paging message according to the first identifier.

[0046] In a possible implementation manner of the first aspect or the second aspect, the first terminal device can further receive an eighth message, the eighth message being used to instruct the first terminal device to receive the paging message in the synchronous mode, or the eighth message being used to instruct the first terminal device to receive the paging message in the asynchronous mode.

[0047] In a possible implementation manner of the first aspect or the second aspect, the at least one sequence includes at least one paging sequence, each of the at least one paging sequence being used to page the first terminal device in the plurality of cells; or the at least one sequence includes at least one group of paging sequences, each of the at least one group of paging sequences including at least one paging sequence, each of the at least one group of paging sequences being used to page the first terminal device in the plurality of cells.

[0048] By the above implementation manner, each paging sequence in the at least one paging sequence included in the at least one sequence can independently page the first terminal device, and network resources occupied are less. Alternatively, each group of paging sequences in the at least one group of paging sequences included in the at least one sequence can page the first terminal device, and one group of paging sequences can carry more information.

[0049] In a possible implementation manner of the above first aspect or second aspect, the at least one sequence includes at least one paging sequence, and the at least one paging sequence is generated based on a W sequence, the W sequence having low ambiguity, so that the paging sequence obtained based on the W sequence has better robustness. A larger number of paging sequences can be obtained based on the W sequence, which is beneficial to expansion of sequence resources, thereby enabling more users to be served.

[0050] In a possible implementation manner of the above first aspect or second aspect, when the at least one paging sequence is generated based on a W sequence, the highest order term of the W sequence is a quadratic term, or the highest order term of the W sequence is a cubic term, or the highest order term of the W sequence is a quartic term. Generally, the larger the highest order term of the W sequence is, the more the number of terms of a polynomial used by the W sequence is, and the larger the number of different sequences generated based on the W sequence is.

[0051] In a possible implementation manner of the above first aspect or second aspect, the at least one sequence includes a plurality of paging sequences, and the highest order terms used when the plurality of paging sequences are generated based on a W sequence are the same. The correlation between the plurality of paging sequences generated by using the same highest order term is better than the correlation between the plurality of paging sequences generated by using different highest order terms, which is beneficial to obtaining better detection performance.

[0052] In a possible implementation manner of the above first aspect or second aspect, the at least one sequence includes a plurality of paging sequences, and the second-highest order terms used when the plurality of paging sequences are generated based on a W sequence are different, so that the first terminal device can detect, by using a correlation position in a time domain or a frequency domain correlation peak position after inverse fast fourier transform (IFFT), which paging sequence the received paging sequence is, thereby reducing detection complexity. And / or, the first order terms used when the plurality of paging sequences are generated based on the W sequence are different, so that the first terminal device can detect, by using a correlation position in a time domain or a time domain correlation peak position after IFFT, which paging sequence the received paging sequence is, thereby reducing detection complexity.

[0053] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes a first paging sequence and a second paging sequence, and the first paging sequence indicates different information from the second paging sequence.

[0054] In a possible implementation of the first aspect or the second aspect, the first paging sequence is used for at least one of paging at least one terminal device, data transmission, notifying system information update, or control information transmission, and the at least one terminal device includes the first terminal device.

[0055] With the above implementation, the paging sequence can be used in multiple ways, and can be applied to more communication scenarios.

[0056] In a possible implementation of the first aspect or the second aspect, the first terminal device supports dedicated paging. For example, different terminal devices can use different paging sequences.

[0057] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes at least one sounding reference signal (SRS) sequence, the first sequence is a first SRS sequence in the at least one SRS sequence, and the first signal is an SRS.

[0058] The first terminal device sends the first signal, which can be replaced with: The first terminal device receives the SRS according to the first SRS sequence.

[0059] In a possible implementation of the first aspect or the second aspect, an identity of the at least one SRS sequence is determined by the first identity, and / or an identity of at least one resource used to carry the at least one SRS sequence is determined by the first identity, and the at least one resource belongs to the first resource.

[0060] With the above implementation, the first identity is associated with the identity of the at least one SRS sequence and the identity of the at least one resource used to carry the at least one SRS sequence, so that the first terminal device can determine the identity of the SRS sequence that can be used by the first terminal device and the resource corresponding to the SRS sequence based on the first identity, without the need for network device configuration, and signaling interaction can be reduced.

[0061] In a possible implementation of the first aspect or the second aspect, the first identifier determines the identity of the at least one SRS sequence, which can be replaced by that the first identifier and fifth information determine the identity of the at least one SRS sequence, the fifth information including a quantity of the at least one SRS sequence and / or a third quantity, the third quantity being a quantity of SRS sequences supported to be transmitted in the plurality of cells.

[0062] In a possible implementation of the first aspect or the second aspect, the first identifier determines the identity of the at least one resource, which can be replaced by that the first identifier and sixth information determine the identity of the at least one resource, the sixth information including a quantity of the at least one resource and / or a fourth quantity, the fourth quantity being a quantity of resources used to carry SRS sequences transmitted in the plurality of cells.

[0063] In a possible implementation of the first aspect or the second aspect, the first identifier determines a transmission mode of the SRS, the transmission mode being to transmit the SRS in a synchronous mode, or the transmission mode being to transmit the SRS in an asynchronous mode.

[0064] With the above implementation, there is an association between the first identifier and the transmission mode of the SRS, so that the first terminal device can determine the transmission mode of the SRS according to the first identifier.

[0065] In a possible implementation of the first aspect or the second aspect, the first terminal device can further receive a ninth message, the ninth message being used to instruct the first terminal device to transmit the SRS in the synchronous mode, or the ninth message being used to instruct the first terminal device to transmit the SRS in the asynchronous mode.

[0066] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes at least one SRS sequence, the at least one SRS sequence being generated based on a W sequence, the W sequence having low ambiguity, so that the SRS sequence obtained based on the W sequence has good robustness. Based on the W sequence, more SRS sequences can be obtained, which is conducive to expanding the sequence resource, so as to be able to provide services for more users.

[0067] In a possible implementation of the first aspect or the second aspect, when the at least one SRS sequence is generated based on a W sequence, the W sequence has a highest order term of a quadratic term, or the W sequence has a highest order term of a cubic term, or the W sequence has a highest order term of a quartic term.

[0068] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes a plurality of SRS sequences, and a highest order term used in generating the plurality of SRS sequences based on the W sequence is the same. The correlation between the plurality of SRS sequences generated using the same highest order term is better than the correlation between the plurality of SRS sequences generated using different highest order terms, which facilitates obtaining better detection performance.

[0069] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes a plurality of SRS sequences, and a second highest order term used in generating the plurality of SRS sequences based on the W sequence is different, so that the first terminal device can detect, by using a correlation position in a time domain or a frequency domain correlation peak position after IFFT, which SRS sequence the received SRS sequence is, and detection complexity can be reduced. And / or, a first order term used in generating the plurality of SRS sequences based on the W sequence is different, so that the first terminal device can detect, by using a correlation position in a time domain or a time domain correlation peak position after IFFT, which SRS sequence the received SRS sequence is, and detection complexity can be reduced.

[0070] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes a first SRS sequence and a second SRS sequence, and information indicated by the first SRS sequence is different from information indicated by the second SRS sequence.

[0071] In a possible implementation of the first aspect or the second aspect, the first SRS sequence is used for at least one of the following: positioning, measurement, user identification, channel estimation, or data transmission.

[0072] Through the above implementation, the use of the SRS sequence can be various, and can be suitable for more communication scenarios.

[0073] In a possible implementation of the first aspect or the second aspect, the first SRS sequence is used to send a scheduling request (SR), and / or the first SRS sequence is used to send a buffer status report (BSR).

[0074] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes at least one synchronization sequence, the first sequence is a first synchronization sequence in the at least one synchronization sequence, the first signal is a synchronization signal, and the synchronization signal is generated based on the first synchronization sequence.

[0075] The first terminal device receives the first signal, which can be replaced by: the first terminal device receives the synchronization signal according to the first synchronization sequence.

[0076] Based on the first aspect or the second aspect, in a possible implementation, the first synchronization sequence is used for the first terminal device to synchronize with network devices corresponding to the plurality of cells.

[0077] Based on the first aspect or the second aspect, in a possible implementation, the identity of the at least one synchronization sequence is determined by a first identity; and / or, the identity of the at least one resource is determined by the first identity, the at least one resource being used to carry the at least one synchronization sequence; wherein the first identity is used to identify the first terminal device within the plurality of cells.

[0078] Through the above implementation, the first identity is associated with the identity of the at least one synchronization sequence and the identity of the at least one resource used to carry the at least one synchronization sequence, so that the first terminal device can determine the identity of the synchronization sequence available to itself and the resource corresponding to the available synchronization sequence based on the first identity, without the need for network device configuration, and signaling interaction can be reduced.

[0079] Based on the first aspect or the second aspect, in a possible implementation, the identity of the at least one synchronization sequence is determined by a first identity, which can be replaced by: the identity of the at least one synchronization sequence is determined by the first identity and seventh information, the seventh information including a number of synchronization sequences included in the at least one synchronization sequence and / or a fifth number, the fifth number being a number of synchronization sequences supported to be transmitted within the plurality of cells.

[0080] Based on the first aspect or the second aspect, in a possible implementation, the identity of the at least one resource is determined by a first identity, which can be replaced by: the identity of the at least one resource is determined by the first identity and eighth information, the eighth information including a number of resources and / or a sixth number, the sixth number being a number of resources used to carry synchronization sequences transmitted within the plurality of cells.

[0081] Based on the first aspect or the second aspect, in a possible implementation, the first terminal device can further start an initial access procedure in a case where a third condition is met, wherein the third condition is that the first terminal device does not receive a synchronization sequence included in the at least one sequence within a set time length, or the third condition is that the first terminal device does not receive a synchronization sequence included in the at least one sequence within a plurality of continuous periods, the period being a transmission period of the synchronization sequence.

[0082] Through the implementation manner, the first terminal device can start the initial access procedure when the first terminal device does not receive the synchronization sequence within the set time length or within the continuous multiple periods, and communication performance can be improved.

[0083] In a possible implementation manner of the first aspect or the second aspect, the at least one sequence includes at least one synchronization sequence, and the at least one synchronization sequence is used for synchronization between the first terminal device and network devices corresponding to the multiple cells.

[0084] Through the implementation manner, the first terminal device does not need to configure the synchronization sequence multiple times when moving in the multiple cells, and mobility management and updating can be simplified, and power consumption of the terminal device and the network device can be reduced.

[0085] In a possible implementation manner of the first aspect or the second aspect, the at least one sequence includes at least one synchronization sequence, and the at least one synchronization sequence is generated based on a W sequence. The W sequence has low ambiguity, so that the synchronization sequence obtained based on the W sequence has good robustness. A large number of synchronization sequences can be obtained based on the W sequence, and expansion of sequence resources can be implemented, so that more users can be served.

[0086] In a possible implementation manner of the first aspect or the second aspect, the at least one sequence includes at least one synchronization sequence, and each synchronization sequence in the at least one synchronization sequence consists of one sequence.

[0087] Through the implementation manner, the synchronization sequence indicated by the at least one sequence consists of one sequence, and compared with a synchronization signal block, less network resources can be occupied, and synchronization delay can be reduced, and power consumption of the network device and the terminal device can be reduced.

[0088] In the first aspect or the second aspect, the one sequence is one W sequence, or the one sequence is a group of W sequences. For example, the first synchronization sequence consists of one W sequence, or the first synchronization sequence consists of a group of W sequences, and the group of W sequences includes at least one sequence.

[0089] In a possible implementation manner of the first aspect or the second aspect, the at least one sequence includes at least one random access sequence, an identity of the at least one random access sequence is determined by the first identity, and / or an identity of at least one resource is determined by the first identity, the at least one resource is used for carrying the at least one random access sequence in the multiple cells, and the at least one resource belongs to the first resource.

[0090] By the above implementation manner, the first identifier is associated with the identifier of the at least one random access sequence and the identifier of the at least one resource for carrying the at least one random access sequence, so that the first terminal device can determine the identifier of the random access sequence available to the first terminal device and the resource corresponding to the random access sequence available to the first terminal device based on the first identifier, without the configuration of the network device, and signaling interaction can be reduced.

[0091] Based on the first aspect or the second aspect, in a possible implementation manner, the identifier of the at least one random access sequence is determined by the first identifier, which can be replaced by that the identifier of the at least one random access sequence is determined by the first identifier and ninth information, the ninth information including the number of the at least one random access sequence and / or a seventh number, the seventh number being the number of random access sequences supported in the plurality of cells.

[0092] Based on the first aspect or the second aspect, in a possible implementation manner, the identifier of the at least one resource is determined by the first identifier, which can be replaced by that the identifier of the at least one resource is determined by the first identifier and tenth information, the tenth information including the number of the at least one resource and / or an eighth number, the eighth number being the number of resources for carrying the random access sequences transmitted in the plurality of cells.

[0093] Based on the first aspect or the second aspect, in a possible implementation manner, when the first signal is transmitted, the first sequence includes at least one random access sequence, and the at least one random access sequence is used to initiate random access.

[0094] By the above implementation manner, the first terminal device initiates random access to the network devices corresponding to the plurality of cells using the first resource in the plurality of cells, so that the configuration times of the random access sequence and the resource carrying the random access sequence can be reduced, the mobility management and update can be simplified, and the power consumption of the network device and the terminal device can be reduced.

[0095] Based on the first aspect or the second aspect, in a possible implementation manner, the at least one sequence includes at least one random access sequence, and the at least one random access sequence is generated based on a W sequence, the W sequence having low ambiguity, so that the random access sequence obtained based on the W sequence has good robustness. A larger number of random access sequences can be obtained based on the W sequence, which is conducive to the expansion of sequence resources, so as to provide services for more users.

[0096] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes a plurality of random access sequences, and the highest order term used in generating the plurality of random access sequences based on the W sequence is the same. The correlation between the plurality of random access sequences generated using the same highest order term is better than the correlation between the plurality of random access sequences generated using different highest order terms, which is beneficial to obtain better detection performance.

[0097] In a possible implementation of the first aspect or the second aspect, the at least one sequence includes at least one random access sequence, and the at least one random access sequence is used to initiate random access.

[0098] With the above implementation, the first terminal device can initiate random access to the network device corresponding to the plurality of cells using the first resource in the plurality of cells, which can reduce mobility management and update of the first terminal device when moving in the plurality of cells, and is beneficial to reduce power consumption of the network device and the terminal device.

[0099] In a possible implementation of the first aspect or the second aspect, the first terminal device is in a first state.

[0100] In a possible implementation of the first aspect or the second aspect, the first state is a connected state, or the first state is an inactive state, or the first state is an idle state, or the first state is a state other than the connected state, the inactive state, and the idle state.

[0101] In a possible implementation of the first aspect or the second aspect, the first state is a state other than the connected state, the inactive state, and the idle state, and the first state is associated with at least one of the connected state, the inactive state, or the idle state. For example, the first state is associated with the connected state, and the first terminal device enters the first state (or wakes up the first state) when entering the connected state. For another example, the first state is associated with the inactive state, and the first terminal device enters the first state (or wakes up the first state) when entering the inactive state. For another example, the first state is associated with the idle state, and the first terminal device enters the first state (or wakes up the first state) when entering the idle state.

[0102] In a possible implementation of the first aspect or the second aspect, before the first terminal device transmits or receives the first signal, the first terminal device can further receive a sixth message, where the sixth message indicates the first terminal device to enter the first state, or the sixth message indicates the first terminal device to switch from a second state to the first state, and the second state is the connected state, or the second state is the inactive state, or the second state is the idle state.

[0103] In a possible implementation of the first aspect or the second aspect, after the first terminal device transmits or receives the first signal, the first terminal device can further receive a seventh message, where the seventh message indicates that the first terminal device enters a third state, or the seventh message is used to indicate that the first terminal device switches from the first state to the third state, and the third state is the connected state, or the third state is the inactive state, or the third state is the idle state.

[0104] In a possible implementation of the first aspect or the second aspect, before the first terminal device transmits or receives the first signal, the first terminal device can further switch from a second state to the first state when a first condition is met, where the first condition includes expiration of a timer corresponding to the second state, and the second state is the connected state, or the second state is the inactive state, or the second state is the idle state.

[0105] In a possible implementation of the first aspect or the second aspect, after the first terminal device transmits or receives the first signal, the first terminal device can further switch from the first state to a third state when a second condition is met, where the second condition includes expiration of a timer corresponding to the first state, and the third state is the connected state, or the third state is the inactive state, or the third state is the idle state.

[0106] Through the above four implementations, the first state can be converted between the connected state, the inactive state, or the idle state based on dynamic signaling or based on setting a timer, the connected state, the inactive state, and the idle state can be reserved, the compatibility is strong, and more communication scenarios can be applied.

[0107] In a possible implementation of the first aspect or the second aspect, the W sequence is generated based on a generation length of the sequence and a length of the sequence in a generation period.

[0108] In a possible implementation of the first aspect or the second aspect, the W sequence can satisfy the following formula:

[0109] p(n)=p d n d +p d-1 n d-1 +…+p1n+p0;

[0110] where x(n) is the W sequence, n is an integer greater than 0 and less than or equal to N, N is the generation length of the sequence, P is the length of the sequence in a generation period, p i is a non-zero integer, 1<i≤d, d is an integer greater than 1, and p1 and p0 are constants.

[0111] In a possible implementation of the first aspect or the second aspect, if the d is 2, the W sequence can be

[0112] or, if the d is 3, the W sequence can be

[0113] or, if the d is 4, the W sequence can be

[0114] wherein α is an integer greater than or equal to 0 and less than or equal to (P-1), μ is an integer greater than or equal to 0 and less than or equal to (P-1), γ is an integer greater than or equal to 0 and less than or equal to (P-1), τ is an integer greater than or equal to 0 and less than or equal to (Q-1), Q is a quantity of cyclic shifts in the time domain, and θ is a constant.

[0115] In a possible implementation of the first aspect or the second aspect, the length of the sequence in the one generation period is a prime number. That is, the value of P can be a prime number. Compared with the case where the value of P is a composite number, the value of P being a prime number cannot be divided by other natural numbers, so that more sequences with good autocorrelation and cross-correlation can be generated under the condition that the d is the same and the length of the sequence satisfies certain conditions, thereby providing services for more users and expanding the capacity.

[0116] In a possible implementation of the first aspect or the second aspect, the first terminal device can further receive an eleventh message, where the eleventh message is used to indicate related parameters of the W sequence, and the related parameters include at least one of the following: a mapping length of the sequence, a generation length of the sequence, d, Q, α, μ, γ, τ, or θ.

[0117] In a possible implementation of the first aspect or the second aspect, the first resource occupies the same frequency domain resource in different time units, or the first resource occupies different frequency domain resources in different time units; the first resource is continuous in the frequency domain, or the first resource is discontinuous in the frequency domain; the first resource is continuous in the time domain, or the first resource is discontinuous in the time domain.

[0118] In a possible implementation of the first aspect or the second aspect, the first resource is consistent in a plurality of cells. For example, the first resource is configured to be the same in the plurality of cells, or the first resource is shared by the plurality of cells, or the first resource is configured to be the same in the plurality of cells. The first resource can be configured for at least one terminal device to use, and the at least one terminal device can communicate with a network device corresponding to the plurality of cells through the first resource.

[0119] In a possible implementation of the first aspect or the second aspect, the first sequence is generated based on a W sequence.

[0120] In a possible implementation of the first aspect or the second aspect, the reference signal sequence comprises at least one of: an SRS sequence, a demodulation reference signal sequence, a positioning reference signal sequence, a phase tracking reference signal sequence, or a channel state information reference signal sequence.

[0121] In a possible implementation of the first aspect or the second aspect, the first identifier is determined by an identifier of a first cell and a radio network temporary identity (RNTI) of the first terminal device; or the first identifier is determined by an identifier of a first area, an identifier of a first cell, and a RNTI of the first terminal device; the first area is an area covered by a network device corresponding to the plurality of cells, and the first cell belongs to the plurality of cells.

[0122] With the above implementation, the first identifier of the first terminal device in the plurality of cells can be obtained by extending the RNTI of the first terminal device, which is easy to implement. The length of the first identifier has no effect on the length of the identifier subsequently allocated to other terminal devices in the plurality of cells.

[0123] In a possible implementation of the first aspect or the second aspect, the first sequence is the sequence used for generating data, and the first terminal device can further receive a twelfth message used for instructing the first terminal device to send or receive the first signal.

[0124] With the above implementation, the data transmission in the first transmission mode can be grant-based transmission, or can also be grant-free transmission.

[0125] In a third aspect, the present application provides a communication method, which is applicable to a first network device, for example, can be executed by the first network device, or can be executed by an apparatus in the first network device. Illustratively, the apparatus in the first network device can refer to a component (for example, a processor, a circuit, a chip, or a chip system, etc.) in the first network device, or can also refer to a logic module or software, etc. capable of realizing all or part of the functions of the first network device.

[0126] Taking the first network device as an execution subject, the method can include: the first network device determining a first sequence, the first sequence being any one of a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data; and sending a first signal to a first terminal device or receiving the first signal from the first terminal device, wherein the first signal is generated based on the first sequence, and the first signal is carried by a first resource, and the first resource is used to carry at least one sequence, and the at least one sequence includes the first sequence.

[0127] Optionally, the at least one sequence can include at least one of a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data. It can be understood that the synchronization sequence, the paging sequence, the random access sequence, the reference signal sequence, the sequence for generating the wake-up signal, the sequence for generating the hybrid automatic repeat request signal, and the sequence for generating the data can be respectively referred to as a type of sequence.

[0128] In a possible implementation, the first resource used to carry the at least one sequence can be replaced with: the first resource used to carry the at least one sequence in multiple cells.

[0129] In a possible implementation, the first terminal device is identified by a first identifier in multiple cells.

[0130] In a possible implementation, the first network device can further send a first message to the first terminal device, the first message including at least one of the first identifier, information indicating the at least one sequence, or the first resource, wherein the first identifier is used to identify the first terminal device in multiple cells, and the multiple cells include a cell corresponding to the first network device.

[0131] In a fourth aspect, the present application provides a communication method, which is applicable to a first network device, for example, can be executed by the first network device or can be executed by a device in the first network device. Illustratively, the device in the first network device can refer to a component (for example, a processor, a circuit, a chip, or a chip system, etc.) in the first network device, or can also refer to a logical module or software, etc. capable of realizing all or part of the functions of the first network device.

[0132] Taking the first network device as an execution subject, the method can include: the first network device sends a first message to a first terminal device, the first message including at least one of the following: a first identifier, information indicating at least one sequence, or a first resource, wherein the first identifier is used to identify the first terminal device within a plurality of cells, the first resource is used to carry the at least one sequence within the plurality of cells, the plurality of cells including a cell corresponding to the first network device, and the at least one sequence including at least one of the following: a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence used to generate a wake-up signal, a sequence used to generate a hybrid automatic repeat request signal, or a sequence used to generate data; and the first network device communicates with the first terminal device according to the first message.

[0133] In a possible implementation, when communicating with the first terminal device according to the first message, the first network device can determine a first sequence, the first sequence belonging to the at least one sequence, the first sequence being any one of the following: a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence used to generate a wake-up signal, a sequence used to generate a hybrid automatic repeat request signal, or a sequence used to generate data; and the first network device sends a first signal to the first terminal device or receives a first signal from the first terminal device, wherein the first signal is generated based on the first sequence, and the first signal is carried by the first resource.

[0134] Based on the third aspect or the fourth aspect described above, in a possible implementation, the first network device can further send a second message to the first terminal device, the second message indicating that the first network device supports a first transmission mode.

[0135] Based on the third aspect or the fourth aspect described above, in a possible implementation, the first network device can further receive a third message from the first terminal device, the third message indicating that the first terminal device uses a first transmission mode.

[0136] Based on the third aspect or the fourth aspect described above, in a possible implementation, the third message is carried by a second resource, the third message indicating that the first terminal device uses the first transmission mode; or the third message is carried by a third resource, the third message indicating that the first terminal device uses a second transmission mode, the second transmission mode being different from the first transmission mode.

[0137] In a possible implementation manner of the third aspect or the fourth aspect, the third message is generated based on a second sequence, and the third message indicates the first terminal device to use the first transmission mode; or the third message is generated based on a third sequence, and the third message indicates the first terminal device to use a second transmission mode, the second transmission mode being different from the first transmission mode.

[0138] In a possible implementation manner of the third aspect or the fourth aspect, the third message is a random access message. For example, the third message can be a random access message in an initial access procedure.

[0139] In a possible implementation manner of the third aspect or the fourth aspect, the third message is scrambled based on first information, and the third message indicates the first terminal device to use the first transmission mode; or the third message is scrambled based on second information, and the third message indicates the first terminal device to use a second transmission mode, the second transmission mode being different from the first transmission mode.

[0140] In a possible implementation manner of the third aspect or the fourth aspect, the third message is a message Msg3.

[0141] In a possible implementation manner of the third aspect or the fourth aspect, the first network device can further send, to the first terminal device, a fourth message, the fourth message including at least one of the following: the second resource, the second sequence, or the first information. Optionally, the fourth message can further include at least one of the following: the third resource, the third sequence, or the second information.

[0142] In a possible implementation manner of the third aspect or the fourth aspect, the third message is carried by radio resource control (RRC) signaling.

[0143] In a possible implementation manner of the third aspect or the fourth aspect, the first network device can further send, to the first terminal device, a fifth message, the fifth message including at least one of the following: an identifier of a network device corresponding to the plurality of cells, an identifier of the plurality of cells, or information indicating that the first transmission mode is allowed to be used.

[0144] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one group of paging sequences, and the first sequence is a first paging sequence in the at least one group of paging sequences, where the first paging sequence is one of at least one paging sequence included in the at least one group of paging sequences, or the first paging sequence is a group of paging sequences in the at least one group of paging sequences.

[0145] The first network device sends the first signal to the first terminal device, which can be replaced by: the first network device sends the first signal to the first terminal device according to the first paging sequence, the first signal carries a paging message, and the paging message is obtained by mapping the first paging sequence to the first resource.

[0146] Based on the third aspect or the fourth aspect, in a possible implementation, an identity of at least one paging sequence included in the at least one group of paging sequences is determined by a first identity; and / or, an identity of at least one resource is determined by a first identity, the at least one resource is used to carry at least one paging sequence included in the at least one group of paging sequences; and the first identity is used to identify the first terminal device in the plurality of cells.

[0147] Based on the third aspect or the fourth aspect, in a possible implementation, an identity of at least one paging sequence included in the at least one group of paging sequences is determined by a first identity, which can be replaced by: an identity of at least one paging sequence included in the at least one group of paging sequences is determined by the first identity and third information, the third information includes a number of paging sequences included in the at least one group of paging sequences and / or a first number, and the first number is a number of paging sequences supported by transmission in the plurality of cells.

[0148] Based on the third aspect or the fourth aspect, in a possible implementation, an identity of at least one resource is determined by a first identity, which can be replaced by: an identity of at least one resource is determined by the first identity and fourth information, the fourth information includes a number of resources and / or a second number, and the second number is a number of resources used to carry paging sequences transmitted in the plurality of cells.

[0149] Based on the third aspect or the fourth aspect, in a possible implementation, the first network device can further send an eighth message to the first terminal device, the eighth message is used to instruct the first terminal device to receive the paging message using a synchronous mode, or the eighth message is used to instruct the first terminal device to receive the paging message using an asynchronous mode.

[0150] Based on the third aspect or the fourth aspect, in a possible implementation, at least one paging sequence is included in the at least one sequence, and each paging sequence in the at least one paging sequence is used to page the first terminal device in the plurality of cells; or at least one group of paging sequences is included in the at least one sequence, each group of paging sequences in the at least one group of paging sequences includes at least one paging sequence, and each group of paging sequences in the at least one group of paging sequences is used to page the first terminal device in the plurality of cells.

[0151] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one paging sequence, and the at least one paging sequence is generated based on a W sequence.

[0152] In a possible implementation manner of the third aspect or the fourth aspect, when the at least one paging sequence is generated based on a W sequence, a highest order term of the W sequence is a quadratic term, or a highest order term of the W sequence is a cubic term, or a highest order term of the W sequence is a quartic term.

[0153] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes a plurality of paging sequences, and a highest order term used when the plurality of paging sequences are generated based on a W sequence is the same.

[0154] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes a plurality of paging sequences, and a second highest order term used when the plurality of paging sequences are generated based on a W sequence is different, and / or a first order term used when the plurality of paging sequences are generated based on the W sequence is different.

[0155] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes a first paging sequence and a second paging sequence, and information indicated by the first paging sequence is different from information indicated by the second paging sequence.

[0156] In a possible implementation manner of the third aspect or the fourth aspect, the first paging sequence is used for at least one of paging at least one terminal device, data transmission, notifying system information update, or control information transmission, and the at least one terminal device includes the first terminal device.

[0157] In a possible implementation manner of the third aspect or the fourth aspect, the first terminal device supports dedicated paging.

[0158] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one SRS sequence, the first sequence is a first SRS sequence in the at least one SRS sequence, and the first signal is an SRS.

[0159] The first network device receives the first signal from the first terminal device can be replaced by: the first network device receives the SRS from the first terminal device according to the first SRS sequence.

[0160] In a possible implementation manner based on the third aspect or the fourth aspect, the identity of the at least one SRS sequence is determined by the first identity; and / or, the identity of the at least one resource is determined by the first identity, and the at least one resource is used to carry the at least one SRS sequence, and the at least one resource belongs to the first resource.

[0161] In a possible implementation manner based on the third aspect or the fourth aspect, the identity of the at least one SRS sequence is determined by the first identity, and the identity of the at least one SRS sequence is determined by the first identity and fifth information, the fifth information including a quantity of the at least one SRS sequence and / or a third quantity, and the third quantity being a quantity of SRS sequences supported to be transmitted in the plurality of cells.

[0162] In a possible implementation manner based on the third aspect or the fourth aspect, the identity of the at least one resource is determined by the first identity, and the identity of the at least one resource is determined by the first identity and sixth information, the sixth information including a quantity of the at least one resource and / or a fourth quantity, and the fourth quantity being a quantity of resources used to carry SRS sequences transmitted in the plurality of cells.

[0163] In a possible implementation manner based on the third aspect or the fourth aspect, the first network device can further send a ninth message to the first terminal device, the ninth message being used to instruct the first terminal device to send the SRS in a synchronous mode, or the ninth message being used to instruct the first terminal device to send the SRS in an asynchronous mode.

[0164] In a possible implementation manner based on the third aspect or the fourth aspect, the at least one sequence includes at least one SRS sequence, and the at least one SRS sequence is generated based on a W sequence.

[0165] In a possible implementation manner based on the third aspect or the fourth aspect, when the at least one SRS sequence is generated based on a W sequence, a highest order term of the W sequence is a quadratic term, or a highest order term of the W sequence is a cubic term, or a highest order term of the W sequence is a quartic term.

[0166] In a possible implementation manner based on the third aspect or the fourth aspect, the at least one sequence includes a plurality of SRS sequences, and a highest order term used when the plurality of SRS sequences are generated based on a W sequence is the same.

[0167] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes a plurality of SRS sequences, a different second highest term is used when the plurality of SRS sequences are generated based on the W sequence, and / or a different first term is used when the plurality of SRS sequences are generated based on the W sequence.

[0168] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes a first SRS sequence and a second SRS sequence, and the first SRS sequence indicates different information from the second SRS sequence.

[0169] In a possible implementation manner of the third aspect or the fourth aspect, the first SRS sequence is used for at least one of the following: positioning, measurement, user identification, channel estimation, or data transmission.

[0170] In a possible implementation manner of the third aspect or the fourth aspect, the first SRS sequence is used for sending an SR, and / or the first SRS sequence is used for sending a BSR.

[0171] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one synchronization sequence, the first sequence is a first synchronization sequence in the at least one synchronization sequence, the first signal is a synchronization signal, and the synchronization signal is generated based on the first synchronization sequence.

[0172] The first network device sends the first signal to the first terminal device, which can be replaced with: the first network device sends the synchronization signal to the first terminal device according to the first synchronization sequence.

[0173] In a possible implementation manner of the third aspect or the fourth aspect, the first synchronization sequence is used for the first terminal device to synchronize with network devices corresponding to a plurality of cells.

[0174] In a possible implementation manner of the third aspect or the fourth aspect, an identity of the at least one synchronization sequence is determined by a first identity, and / or an identity of at least one resource is determined by the first identity, the at least one resource being used to carry the at least one synchronization sequence, wherein the first identity is used to identify the first terminal device within a plurality of cells.

[0175] In a possible implementation manner of the third aspect or the fourth aspect, the identification of the at least one synchronization sequence is determined by the first identification, and the identification of the at least one synchronization sequence is determined by the first identification and seventh information, the seventh information including a number of synchronization sequences included in the at least one synchronization sequence and / or a fifth number, the fifth number being a number of synchronization sequences supported to be transmitted in the plurality of cells.

[0176] In a possible implementation manner of the third aspect or the fourth aspect, the identification of the at least one resource is determined by the first identification, and the identification of the at least one resource is determined by the first identification and eighth information, the eighth information including a number of resources of the at least one resource and / or a sixth number, the sixth number being a number of resources used to carry the synchronization sequences transmitted in the plurality of cells.

[0177] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one synchronization sequence, and the at least one synchronization sequence is used for the first terminal device to synchronize with network devices corresponding to the plurality of cells.

[0178] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one synchronization sequence, and the at least one synchronization sequence is generated based on a W sequence.

[0179] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one synchronization sequence, and each synchronization sequence in the at least one synchronization sequence consists of one sequence.

[0180] In the third aspect or the fourth aspect, the one sequence is one W sequence, or the one sequence is a group of W sequences. For example, the first synchronization sequence consists of one W sequence, or the first synchronization sequence consists of a group of W sequences, and the group of W sequences includes at least one sequence.

[0181] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one random access sequence, and the identification of the at least one random access sequence is determined by the first identification; and / or, the identification of at least one resource is determined by the first identification, the at least one resource being used to carry the at least one random access sequence in the plurality of cells, and the at least one resource belonging to the first resource.

[0182] In a possible implementation manner of the third aspect or the fourth aspect, the identification of the at least one random access sequence is determined by the first identification, which can be replaced by: the identification of the at least one random access sequence is determined by the first identification and ninth information, the ninth information including a number of the at least one random access sequence and / or a seventh number, the seventh number being a number of random access sequences supported to be transmitted in the plurality of cells.

[0183] In a possible implementation manner of the third aspect or the fourth aspect, the identification of the at least one resource is determined by the first identification, which can be replaced by: the identification of the at least one resource is determined by the first identification and tenth information, the tenth information including a number of the at least one resource and / or an eighth number, the eighth number being a number of resources used to carry random access sequences transmitted in the plurality of cells.

[0184] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one random access sequence, and the at least one random access sequence is generated based on a W sequence.

[0185] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes a plurality of random access sequences, and a highest order term used when the plurality of random access sequences are generated based on a W sequence is the same.

[0186] In a possible implementation manner of the third aspect or the fourth aspect, the at least one sequence includes at least one random access sequence, and the at least one random access sequence is used to initiate random access.

[0187] In a possible implementation manner of the third aspect or the fourth aspect, the first terminal device is in a first state.

[0188] In a possible implementation manner of the third aspect or the fourth aspect, the first state is a connected state, or the first state is an inactive state, or the first state is an idle state, or the first state is a state other than the connected state, the active state and the idle state.

[0189] In a possible implementation manner of the third aspect or the fourth aspect, the first state is a state other than the connected state, the active state and the idle state, and the first state is associated with at least one of the connected state, the active state or the idle state.

[0190] In a possible implementation manner based on the third aspect or the fourth aspect, before the first signal is sent or received, the first network device can further send a sixth message to the first terminal device, where the sixth message indicates the first terminal device to enter the first state, or the sixth message indicates the first terminal device to switch from a second state to the first state, the second state being the connected state, or the second state being the inactive state, or the second state being the idle state.

[0191] In a possible implementation manner based on the third aspect or the fourth aspect, after the first signal is sent or received, the first network device can further send a seventh message to the first terminal device, where the seventh message indicates the first terminal device to enter a third state, or the seventh message is used to indicate the first terminal device to switch from the first state to the third state, the third state being the connected state, or the third state being the inactive state, or the third state being the idle state.

[0192] In a possible implementation manner based on the third aspect or the fourth aspect, the W sequence is generated by a generation length of the sequence and a length of the sequence in a generation period.

[0193] In a possible implementation manner based on the third aspect or the fourth aspect, the W sequence can satisfy the following formula:

[0194] p(n)=p d n d +p d-1 n d-1 +…+p1n+p0;

[0195] where x(n) is the W sequence, n is an integer greater than 0 and less than or equal to N, N is the generation length of the sequence, P is the length of the sequence in a generation period, p i is a non-zero integer, 1<i≤d, d is an integer greater than 1, and p1 and p0 are constants.

[0196] In a possible implementation manner based on the third aspect or the fourth aspect, if the d is 2, the W sequence can be

[0197] or, if the d is 3, the W sequence can be

[0198] or, if the d is 4, the W sequence can be

[0199] Wherein, a is an integer greater than or equal to 0 and less than or equal to (P-1), μ is an integer greater than or equal to 0 and less than or equal to (P-1), γ is an integer greater than or equal to 0 and less than or equal to (P-1), τ is an integer greater than or equal to 0 and less than or equal to (Q-1), Q is the number of cyclic shifts in the time domain, and θ is a constant.

[0200] Based on the third aspect or the fourth aspect, in a possible implementation, the length of the sequence in the one generation period is a prime number. That is, the value of P can be a prime number.

[0201] Based on the third aspect or the fourth aspect, in a possible implementation, the first network device can further send an eleventh message to the first terminal device, where the eleventh message is used to indicate related parameters of the W sequence, and the related parameters include at least one of the following: the mapping length of the sequence, the generation length of the sequence, d, Q, a, μ, γ, τ, or θ.

[0202] Based on the third aspect or the fourth aspect, in a possible implementation, the first resource occupies the same frequency domain resource in different time units, or the first resource occupies different frequency domain resources in different time units; the first resource is continuous in the frequency domain, or the first resource is discontinuous in the frequency domain; the first resource is continuous in the time domain, or the first resource is discontinuous in the time domain.

[0203] Based on the third aspect or the fourth aspect, in a possible implementation, the first resource is consistent in the plurality of cells.

[0204] Based on the third aspect or the fourth aspect, in a possible implementation, the first sequence is generated based on a W sequence.

[0205] Based on the third aspect or the fourth aspect, in a possible implementation, the reference signal sequence includes at least one of the following: an SRS sequence, a demodulation reference signal sequence, a positioning reference signal sequence, a phase tracking reference signal sequence, or a channel state information reference signal sequence.

[0206] Based on the third aspect or the fourth aspect, in a possible implementation, the first identifier is determined by an identifier of a first cell and an RNTI of the first terminal device; or the first identifier is determined by an identifier of a first area, an identifier of a first cell, and an RNTI of the first terminal device; wherein the first area is an area covered by a network device corresponding to the plurality of cells, and the first cell belongs to the plurality of cells.

[0207] In a possible implementation manner of the third aspect or the fourth aspect, the first sequence is the sequence used for generating the data, and the first network device further can send a twelfth message to the first terminal device, where the twelfth message is used to instruct the first terminal device to send or receive the first signal.

[0208] The technical effects achieved by the third aspect or the fourth aspect and any possible implementation manner thereof can refer to the technical effects achieved by the first aspect or the second aspect and any possible implementation manner thereof, which will not be repeated here.

[0209] In a fifth aspect, the present application provides a communication apparatus, which can be used to execute the method in the first aspect or the second aspect and any possible implementation manner thereof. The communication apparatus can be the first terminal device, or can be a component in the first terminal device. The communication apparatus can include a module, unit or means corresponding to the method in the first aspect or the second aspect and any possible implementation manner thereof, which can be implemented by hardware, software or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

[0210] In a possible implementation manner, the communication apparatus can include a baseband apparatus and a radio frequency apparatus.

[0211] In another possible implementation manner, the communication apparatus can include a processing module (also referred to as a processing unit) and a transceiving module (also referred to as a transceiving unit). The transceiving module can implement the sending function and the receiving function. When the transceiving module implements the sending function, it can be referred to as a sending module (also referred to as a sending unit). When the transceiving module implements the receiving function, it can be referred to as a receiving module (also referred to as a receiving unit). The sending module and the receiving module can be the same functional module, which is referred to as the transceiving module, and the functional module can implement the sending function and the receiving function. Alternatively, the sending module and the receiving module can be different functional modules, and the transceiving module is a general term for these functional modules.

[0212] In a sixth aspect, the present application provides a communication apparatus, which can be used to execute the method in the third aspect or the fourth aspect or any possible implementation manner thereof. The communication apparatus can be, for example, a first network device, or can also be a component in the first network device. The communication apparatus can include a module, a unit or a means corresponding to the method in the third aspect or the fourth aspect or any possible implementation manner thereof, which can be implemented by hardware, software or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

[0213] In a possible implementation manner, the communication apparatus can include a baseband apparatus and a radio frequency apparatus.

[0214] In another possible implementation manner, the communication apparatus can include a processing module (also referred to as a processing unit) and a transceiver module (also referred to as a transceiver unit). The transceiver module can implement the sending function and the receiving function. When the transceiver module implements the sending function, it can be referred to as a sending module (also referred to as a sending unit). When the transceiver module implements the receiving function, it can be referred to as a receiving module (also referred to as a receiving unit). The sending module and the receiving module can be the same functional module, which is referred to as a transceiver module, and can implement the sending function and the receiving function. Alternatively, the sending module and the receiving module can be different functional modules, and the transceiver module is a general term for these functional modules.

[0215] In a seventh aspect, the present application provides a communication system, which can include the communication apparatus in the fifth aspect and / or the communication apparatus in the sixth aspect.

[0216] In an eighth aspect, the present application further provides a communication apparatus. The communication apparatus can include one or more processors. Optionally, the communication apparatus can further include a memory. The memory is configured to store one or more computer programs or instructions. The one or more processors are configured to execute the one or more computer programs or instructions stored in the memory, so that the communication apparatus executes the method in any one of the first aspect to the fourth aspect or any possible implementation manner thereof.

[0217] In a ninth aspect, the present application provides a communication device, comprising: a processor and an interface circuit; the interface circuit is configured to receive a signal from another communication device outside the communication device and transmit the signal to the processor or send a signal from the processor to another communication device outside the communication device. The processor is configured to implement the method of any one of the preceding aspects by means of a logic circuit or by executing a computer program or instructions. The communication device can be the first terminal device in the first aspect or the second aspect, or a device comprising the first terminal device, or a device comprised in the first terminal device, such as a chip; or the communication device can be the first network device in the third aspect or the fourth aspect, or a device comprising the first network device, or a device comprised in the first network device.

[0218] In some possible designs, when the apparatus is a chip system, the chip system can be composed of a chip or can comprise a chip and other discrete devices.

[0219] In a tenth aspect, the present application provides a chip system, comprising at least one chip and a memory, wherein the at least one chip is configured to read and execute a program stored in the memory to implement the method of any one of the first aspect to the fourth aspect and any possible implementation thereof.

[0220] In an eleventh aspect, the present application provides a computer readable storage medium, configured to store a computer program or instructions, which, when executed, cause the method of any one of the first aspect to the fourth aspect and any possible implementation thereof to be implemented.

[0221] In a twelfth aspect, the present application provides a computer program product, comprising a computer program or instructions, which, when executed on a computer, cause the method of any one of the first aspect to the fourth aspect and any possible implementation thereof to be implemented.

[0222] The technical effects achieved by the fifth aspect to the twelfth aspect and any possible implementation thereof can be referred to the technical effects achieved by any one of the first aspect to the fourth aspect and any possible implementation thereof, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0223] FIG. 1 is a schematic diagram of a network architecture of a communication system;

[0224] FIG. 2 is a schematic diagram of a base station-centered network architecture;

[0225] FIG. 3 is a schematic diagram of a user-centered network architecture;

[0226] FIG. 4 is a schematic diagram of multiple meta-BWPs according to an embodiment of the present application;

[0227] FIG. 5 is a schematic diagram of multiple meta-BWPs according to an embodiment of the present application;

[0228] FIG. 6 is a flow diagram of a first communication method according to an embodiment of the present application;

[0229] FIG. 7 is a schematic diagram of multiple paging sequences according to an embodiment of the present application;

[0230] FIG. 8 is a flow diagram of a second communication method according to an embodiment of the present application;

[0231] FIG. 9 is a flow diagram of a third communication method according to an embodiment of the present application;

[0232] FIG. 10 is a schematic diagram of a receiving manner of a paging sequence according to an embodiment of the present application;

[0233] FIG. 11 is a schematic diagram of a first state according to an embodiment of the present application;

[0234] FIG. 12 is a schematic diagram of a communication apparatus according to an embodiment of the present application;

[0235] FIG. 13 is a schematic diagram of another communication apparatus according to an embodiment of the present application;

[0236] FIG. 14 is a schematic diagram of still another communication apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0237] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0238] The network architecture and service scenarios described in the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the appearance of new service scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0239] I. In the embodiments of the present application, "a plurality of" can refer to two or more than two. In view of this, "a plurality of" can also be understood as "at least two" in the embodiments of the present application. "At least one" can be understood as one or more, for example, one, two or more. For example, "including at least one" means including one, two or more, for example, including at least one of A, B and C, and the inclusion can be A, B, C, A and B, A and C, B and C, or A, B and C. "And / or" describes the association relationship of the associated objects, and there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / ", if not specially stated, generally represents that the front and rear associated objects are in an "or" relationship.

[0240] II. The terms "system" and "network" in the embodiments of the present application can be used interchangeably, and "according to" and "based on" can be used interchangeably.

[0241] The ordinal numbers "first", "second" and the like mentioned in the embodiments of the present application are generally used to distinguish different objects, and are not used to limit the order, time sequence, priority or importance of a plurality of objects. For example, the first sequence, the second sequence and the third sequence involved in the embodiments of the present application are used to distinguish different sequences, and do not limit the order, time sequence, priority or importance of the plurality of sequences.

[0242] III. The terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device containing a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0243] IV. In the present application, "predefined" can include predefinition, for example, protocol definition. Wherein, "predefinition" can be realized by pre-saving corresponding codes, tables or other ways that can be used to indicate related information in devices (for example, including various network elements), and the present application does not limit the specific implementation manner thereof.

[0244] V. The "storage" or "saving" involved in the present application can refer to saving in one or more memories. The one or more memories can be separately arranged or integrated in the encoder or decoder, processor or communication device. The one or more memories can be part of the separately arranged and part of the integrated in the decoder, processor or communication device. The type of memory can be any form of storage medium, which is not limited.

[0245] Six, the arrow or block shown in the dashed line in the schematic diagram of the drawing part of the specification represents an optional step or an optional module.

[0246] Seven, in this application, "indication" can include direct indication, indirect indication, display indication, implicit indication. When describing that certain indication information is used to indicate A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0247] In this application, the information indicated by the indication information is called the to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, where the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be only indicated a part, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of a specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, the protocol stipulates), thereby reducing the indication overhead to a certain extent. In addition, the to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending opportunity of these sub-information can be the same or different.

[0248] Eight, in this application, "sending" and "receiving" represent the direction of signal transmission. For example, "sending information to XX" can be understood as that the destination of the information is XX, which can include direct sending through the air interface, and also includes indirect sending through the air interface by other units or modules. "Receiving information from YY" can be understood as that the source of the information is YY, which can include directly receiving from YY through the air interface, and also can include indirectly receiving from YY through the air interface from other units or modules. "Sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be carried out between devices, for example, between network devices and terminal devices, or can be carried out within a device, for example, between components, modules, chips, software modules or hardware modules within a device through a bus, wire or interface.

[0249] Nine, in this application, the words such as "exemplarily", "such as", "for example" are used to represent examples, illustrations or descriptions. Any embodiment or design scheme described as "example" in this application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the use of the word "example" is intended to present the concept in a specific manner. In the embodiments of this application, "of", "corresponding" and "corresponding" are sometimes mixed. It should be pointed out that when the difference is not emphasized, the meaning expressed is consistent.

[0250] Ten, the embodiments of this application will be presented around a system including a plurality of devices, components, modules, etc. It should be understood that the system can include other devices, components, modules, etc. not mentioned, or can only include part of the devices, components, or modules mentioned in the embodiments. Alternatively, "component" and "part" in this application can be replaced with each other.

[0251] The following first introduces a communication system applicable to the embodiments of this application.

[0252] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, a communication sensing integrated (integrated sensing and communication, ISAC) system, a universal mobile communication system (universal mobile telecommunications system, UMTS), a wireless local area network (wireless local area network, WLAN), a short-range wireless communication system (such as a sidelink, wireless fidelity (wireless fidelity, Wi-Fi), Bluetooth, etc.), a wired network, a vehicle to everything (vehicle to everything, V2X) communication system, a device-to-device (device-to-device, D2D) communication system, a vehicle networking communication system, a 4th generation (4th generation, 4G) mobile communication system (such as a long term evolution (long term evolution, LTE) system), an LTE frequency division duplex (frequency division duplex, FDD) system, an LTE time division duplex (time division duplex, TDD), a worldwide interoperability for microwave access (worldwide interoperability for microwave access, WiMAX) communication system, a 5th generation (5th generation, 5G) mobile communication system (such as a new radio (new radio, NR) system), a future communication system, or other similar communication systems, etc. The embodiments of the present application are described taking the communication system shown in FIG. 1 as an example. When the technical solutions of the embodiments of the present application are applied to other communication systems, the devices, components, modules, etc. in the embodiments can be replaced by corresponding devices, components, modules in other communication systems, without limitation.

[0253] Figure 1 is a schematic diagram of an architecture of a communication system to which embodiments of the present application are applied. As shown in Figure 1, the communication system includes an access network 100 and a core network 200. Optionally, the communication system can also include an Internet 300. Among them, the access network 100 can include at least one radio access network (RAN) node, such as 110a and 110b in Figure 1, and at least one terminal device, such as 120a-120j in Figure 1. Among them, 110a is a base station, 110b is a micro station, 120a, 120e, 120f and 120j are mobile phones, 120b is a car, 120c is a fuel dispenser, 120d is a home access point (HAP) arranged indoors or outdoors, 120g is a notebook computer, 120h is a printer, and 120i is a drone. Among them, the same terminal device or network device can provide different functions in different application scenarios. For example, the mobile phones in Figure 1 are 120a, 120e, 120f and 120j, the mobile phone 120a can access the base station 110a, connect the car 120b, communicate directly with the mobile phone 120e and access the HAP, the car 120b can access the HAP and communicate directly with the mobile phone 120a, the mobile phone 120f can access the micro station 110b, connect the notebook computer 120g, and connect the printer 120h, and the mobile phone 120j can control the drone 120i.

[0254] The network device is a network-side device with wireless transceiving function. The network device can be a device in a radio access network (RAN) that provides wireless communication function for a terminal device, referred to as a RAN device; or the network device can also be a core network device. For ease of understanding, the network device is taken as a RAN device in the following description. The RAN can be an access network in the 3rd generation partnership project (3GPP), for example, a 4G, 5G, or future-oriented network. The RAN can also be an open RAN (O-RAN or ORAN), a cloud radio access network (CRAN), or a communication network of two or more of the above networks. The RAN device can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, an access node in a WiFi system, a wireless relay node, or a wireless backhaul node, etc.

[0255] The RAN device can also be a module or unit that completes the function of the base station part, for example, can be a central unit (CU), can also be a distributed unit (DU), and can also be a radio unit (RU). The CU here completes the function of the radio resource control protocol and the packet data convergence layer protocol (PDCP) of the base station, and can also complete the function of the service data adaptation protocol (SDAP); the DU completes the function of the radio link control layer and the medium access control (MAC) layer of the base station, and can also complete the function of part of the physical layer or the entire physical layer. For specific descriptions of the above-mentioned various protocol layers, refer to the relevant technical specifications of the 3rd generation partnership project (3GPP). The CU and the DU can be separately arranged, or can also be included in the same network element, for example, in a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, for example, included in a remote radio unit (RRU), an active antenna processing unit (AAU), or a remote radio head (RRH). In different systems, the CU, the DU, or the RU can also have different names, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an open CU (O-CU), the DU can also be referred to as an open DU (O-DU), and the RU can also be referred to as an open RU (O-RU). Any one of the CU (or CU-control plane (CU-CP) or CU-user plane (CU-UP)), the DU, and the RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module. The network device can be a macro base station (such as 110a in FIG. 1), can also be a micro base station or an indoor station (such as 110b in FIG. 1), and can also be a relay node or a donor node, etc. The embodiments of this application do not limit the specific technology and specific device form adopted by the network device.

[0256] In the embodiments of the present application, the functions of the network device can also be performed by a module (such as a chip) in the network device, or by a control subsystem containing the functions of the network device. The control subsystem containing the functions of the network device herein can be a control center in the above-mentioned application scenarios such as smart grid, industrial control, intelligent transportation, smart city, etc.

[0257] The terminal device is a user-side device with wireless transceiving function. The terminal device can also be referred to as a terminal, user equipment (UE), user terminal, user apparatus, user unit, user station, access terminal, access station, UE station, remote station, wireless communication device, mobile station, or mobile terminal, etc. The terminal device is usually provided with a communication module, circuit or chip for performing corresponding communication functions. The terminal device is also configured with program instructions for performing corresponding communication functions. The terminal device can be widely applied in various scenarios, such as device-to-device (D2D), vehicle to everything (V2X) communication, machine to machine (M2M) or machine-type communication (MTC), internet of things (IOT), virtual reality (VR), augmented reality (AR), industrial control, self driving, remote medical, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal device can be a mobile phone, tablet computer, computer with wireless transceiving function, wearable device, vehicle, unmanned aerial vehicle, helicopter, airplane, ship, robot, mechanical arm, smart home device, transport vehicle with wireless communication function, communication module, etc.

[0258] In the embodiments of the present application, the device for implementing the functions of the terminal device can be a terminal device, or a device capable of supporting the terminal device to implement the functions, such as a chip system or a combination device or component that can implement the functions of the terminal device, which can be installed in the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0259] The network device and the terminal device can be fixed in position or movable. The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can be deployed on water; and can be deployed on an airplane, a balloon, and a man-made satellite in the air. Embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

[0260] The network device and the terminal device can communicate with each other through an air interface protocol. The air interface can be referred to as an air interface. The network device and the network device can communicate with each other through a network device-to-network device interface protocol. The terminal device and the terminal device can communicate with each other through a terminal device-to-terminal device interface protocol. The network device and the terminal device, the network device and the network device, and the terminal device and the terminal device can communicate through a licensed spectrum, an unlicensed spectrum, or both, without limitation.

[0261] The roles of the network device and the terminal device can be relative, for example, the helicopter or the unmanned aerial vehicle 120i in FIG. 1 can be configured as a mobile network device. For the terminal device 120j that accesses the wireless access network 100 through 120i, the terminal device 120i is a network device; but for the network device 110a, 120i is a terminal device, that is, 110a and 120i communicate with each other through a wireless air interface protocol. Of course, 110a and 120i can also communicate with each other through a network device-to-network device interface protocol, in which case, 120i is also a network device relative to 110a. Therefore, the network device and the terminal device can be collectively referred to as a communication apparatus. 110a and 110b in FIG. 1 can be referred to as a communication apparatus with a network device function, and 120a-120j in FIG. 1 can be referred to as a communication apparatus with a terminal device function.

[0262] It should be noted that the communication system described in the embodiments of the present application is used to more clearly illustrate the technical solutions of the embodiments of the present application, and does not limit the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0263] Next, the technical features related to the present application are introduced.

[0264] A mobile communication system is usually designed, deployed and managed in a base station centric manner in a physical layer, as shown in FIG. 2. Two network devices and three terminal devices are taken as examples in FIG. 2. The two network devices are denoted as network device 1 and network device 2, and the three terminal devices are denoted as terminal device 1, terminal device 2 and terminal device 3. The base station centric manner can be understood as that: a terminal device initially accesses a cell provided by a network device, and the network device configures the terminal device with related information of the cell and related information of neighboring cells of the cell; or the base station centric manner can also be understood as that: a network device configures a terminal device with resources in a unit of a cell, and the resources are only used in the cell and usually need to be reconfigured in other cells. Alternatively, the base station centric manner can also be referred to as a network device centric manner, or a cell centric manner, and is not limited in this regard.

[0265] The base station centric manner can reduce the processing complexity of a network device, and is beneficial to multiplexing of frequency or reference signal resources between different network devices, but the user experience is easily affected by the distance between a user terminal and a network device. For example, referring to terminal device 1 shown in FIG. 2, the terminal device 1 is located in the center of a cell and is close to network device 1, the signal-to-noise ratio of a communication link between the terminal device 1 and the network device 1 is high, the interference is small, and the user experience is good. For another example, referring to terminal device 2 shown in FIG. 2, the terminal device 2 is located at the edge of a cell and is far away from network device 1, the signal-to-noise ratio of a communication link between the terminal device 2 and the network device 1 is low, the interference is large, and the user experience is poor.

[0266] Referring to terminal device 3 shown in FIG. 2, the terminal device 3 is in a moving state, can move from a cell provided by network device 2 to a cell provided by network device 1, triggers a cell handover procedure, and can cause problems such as a decrease in communication quality, a communication interruption and the like, and also affects the user experience. During the cell handover procedure, a terminal device and a network device need to perform complicated signaling interaction for mobility management and updating, which is not conducive to energy saving of the terminal device and the network device. In addition, the terminal device also needs to periodically perform synchronization operations, measurement operations and the like, which is also not conducive to energy saving of the terminal device and the network device. Alternatively, the measurement operation can include but is not limited to at least one of the following: a measurement related to cell handover, a sensing measurement or a channel measurement.

[0267] In order to improve the problem of the cell edge in the base station centric network structure, the concept of user centric no cell (UCNC) is proposed in the development process of the mobile communication system. Alternatively, the user centric no cell can also be referred to as user centric. The concept of user centric is that the user is centered, and the cell switching process is triggered as little as possible or as little as possible, as shown in FIG. 3. Two network devices and two terminal devices are taken as examples in FIG. 3. Among them, the two network devices are denoted as network device 1 and network device 2, and the two terminal devices are denoted as terminal device 1 and terminal device 2. In an embodiment, the UCNC architecture can realize user centric through hyper cell, that is, the frequency resources of multiple cells and the specific format of signals to be transmitted and received by the user terminal are aligned, so that the user can not feel the cell switching to a certain extent. Essentially, the network device side still needs to perform tedious mobility management and update. The hyper cell is equivalent to enlarging the concept of the cell, and the number of users to be served by the system is increased, and usually the reference signal sequences and other sequence resources allocated to different user terminals are different, resulting in insufficient reference signal sequences and other sequence resources.

[0268] In the UCNC architecture, although the user can not feel the cell switching to a certain extent, the tedious mobility management and update still need to be performed, which is not conducive to the energy saving of the terminal device and the network device. For example, the terminal device and the network device need to frequently perform synchronization, measurement, configuration and other mobility management and update, which is not conducive to the energy saving of the terminal device and the network device.

[0269] With the development of mobile communication technology, wireless services are increasingly growing and rich, and the demand of users for communication performance is also rising. For example, in the foregoing base station centric or UCNC architecture, when the terminal device moves between multiple cells, the terminal device needs to perform tedious mobility management and update, and frequently performs synchronization, measurement, configuration and other operations, which affects the user experience and makes the power consumption of the terminal device and the network device high. The high power consumption of the terminal device and the network device affects the communication performance and is not conducive to energy saving. Therefore, how to improve the communication performance is a current research direction.

[0270] In view of this, the embodiments of the present application provide a communication method and device for improving the communication performance. Among them, the method and device described in the present application are based on the same technical concept. Since the principles of the methods and devices for solving problems are similar, the implementation of the device and the method can be mutually referred to, and the repeated parts will not be described again.

[0271] Before introducing the communication method provided by the embodiments of the present application, the related terms involved in the embodiments of the present application are explained below. When not specifically explained, these explanations are to support the meaning of the related terms and make the embodiments of the present application easier to understand, and should not be regarded as strict limitation on the related terms in the protection scope claimed by the present application.

[0272] 1、first transmission mode and second transmission mode

[0273] The embodiments of the present application provide a transmission mode, which is referred to as a first transmission mode. The first transmission mode can be understood as a mode in which a terminal device communicates with network devices corresponding to a plurality of cells through fixed resources in the plurality of cells; or can also be understood as a mode in which a terminal device communicates with network devices corresponding to a plurality of cells through fixed resources in an area covered by the network devices. Optionally, the network device corresponding to a cell can be understood as that the cell is provided by the network device. The plurality of cells can correspond to one network device, or can correspond to a plurality of network devices, which is not limited. For example, the network devices corresponding to the plurality of cells can be referred to as M network devices, and M is an integer greater than or equal to 1. The area covered by the M network devices can be understood as a geographical range covered by the M network devices, or can also be understood as a logical range covered by the M network devices, which is not limited. For the sake of brevity, the area covered by the M network devices is referred to as a first area in the following description.

[0274] Optionally, the first transmission mode can also be referred to as a first communication mode, a first mode, a meta mode, a meta transmission mode, a dedicated mode, a dedicated transmission mode, a green light area mode, or a green light area transmission mode, etc. The naming of the first transmission mode is not limited in the embodiments of the present application.

[0275] It can be understood that the communication method provided by the embodiments of the present application can be applied to a scenario of a plurality of cells, or can be applied to a scenario of one cell. The implementation process in the scenario of one cell can be referred to the implementation process in the scenario of a plurality of cells in the following description.

[0276] Optionally, the fixed resource can be understood as a resource consistent in the multiple cells or the first area, or a resource without reconfiguration in the multiple cells or the first area, etc. For example, the fixed resource is configured to be the same in the multiple cells, or the fixed resource is shared by the multiple cells, or the fixed resource is configured to be unchanged in the multiple cells. For example, the fixed resource can be configured to be used by at least one terminal device, and the at least one terminal device can communicate with the network device corresponding to the multiple cells through the fixed resource. Optionally, the fixed resource can also be referred to as a meta resource, etc., and the naming of the fixed resource in the embodiments of the present application is not limited. For example, the fixed resource can include a sequence resource, or include a physical resource, or include a sequence resource and a physical resource.

[0277] The second transmission mode is different from the first transmission mode. For example, the second transmission mode can be understood as a transmission mode other than the first transmission mode. For example, the second transmission mode can be a base station-centered transmission mode. For another example, the second transmission mode can be a transmission mode in a single cell scenario. Optionally, the second transmission mode can also be referred to as a second communication mode, a second mode, a non-green light area mode, a non-green light area transmission mode, or a scheduled transmission mode, etc., and the naming of the second transmission mode in the embodiments of the present application is not limited.

[0278] 2, sequence resource and physical resource

[0279] The embodiments of the present application provide a sequence resource, which can include (or indicate) at least one sequence. For example, the sequence resource can include but is not limited to at least one of the following: a random access sequence, a synchronization (SYNC) sequence, a paging sequence, a reference signal (RS) sequence, a sequence for generating a wake up signal (WUS), a sequence for generating a hybrid automatic repeat request (HARQ) signal, or a sequence for generating data. Optionally, the sequence resource can also be referred to as a sequence set, a sequence resource pool, or a sequence pool, etc., and the naming of the sequence resource in the embodiments of the present application is not limited.

[0280] It can be understood that the synchronization sequence, the paging sequence, the random access sequence, the reference signal sequence, the sequence for generating the wake up signal, the sequence for generating the hybrid automatic repeat request signal, and the sequence for generating the data can be respectively referred to as a type of sequence.

[0281] Optionally, the reference signal sequence can include at least one of a sounding reference signal (SRS) sequence, a demodulation reference signal (DMRS) sequence, a positioning reference signal (PSR) sequence, a phase tracking reference signal (PTRS) sequence, or a channel state information-reference signal (CSI-RS) sequence, or the like. For brevity, the embodiments of the present application take the sounding reference signal as an example for description. It can be understood that in future communication systems, the sounding reference signal can still be referred to as SRS, or can be other names, which are not limited.

[0282] The embodiments of the present application provide a physical resource, which can be used to carry a sequence resource. For example, the physical resource can carry a sequence resource in multiple cells. For another example, the physical resource can carry a sequence resource in a first area. Optionally, carrying a sequence resource can be replaced by carrying at least one sequence included in the sequence resource. Optionally, the physical resource can also carry data and the like in multiple cells or the first area, which is not limited.

[0283] For example, the physical resource can occupy all bandwidth in the frequency domain and can occupy part of the time domain resource in the time domain; or the physical resource can occupy part of the bandwidth in the frequency domain and can occupy part of the time domain resource in the time domain; or the physical resource can occupy part of the bandwidth in the frequency domain and can occupy all time domain resources in the time domain. For ease of understanding, the present application takes the physical resource occupying part of the bandwidth in the frequency domain as an example. Optionally, the physical resource can also be referred to as a dedicated resource, a bandwidth part (BWP), or a dedicated BWP, and the like, and the naming of the physical resource in the embodiments of the present application is not limited. Hereinafter, the physical resource is taken as an example for description. Optionally, the meta-BWP can be referred to as meta-BWP, which is not limited. Optionally, the first transmission mode can be understood as a mode in which the terminal device and the M network devices communicate (for example, transmit a sequence resource) through the meta-BWP in multiple cells or the first area.

[0284] In one example, the meta-BWP can occupy the same frequency domain resources in different time units. For example, the meta-BWP occupies the same frequency domain resources in different time units, is continuous in the frequency domain, and is also continuous in the time domain, as shown in (1) of FIG. 4. For another example, the meta-BWP occupies the same frequency domain resources in different time units, is continuous in the frequency domain, and is discontinuous in the time domain, as shown in (2) of FIG. 4. For another example, the meta-BWP occupies the same frequency domain resources in different time units, is discontinuous in the frequency domain, and is continuous in the time domain, as shown in (3) of FIG. 4. For another example, the meta-BWP occupies the same frequency domain resources in different time units, is discontinuous in the frequency domain, and is also discontinuous in the time domain, as shown in (4) of FIG. 4.

[0285] In another example, the meta-BWP can also occupy different frequency domain resources in different time units. For example, the meta-BWP occupies different frequency domain resources in different time units, is continuous in the frequency domain, and is also continuous in the time domain, as shown in (1) of FIG. 5. For another example, the meta-BWP occupies different frequency domain resources in different time units, is continuous in the frequency domain, and is discontinuous in the time domain, as shown in (2) of FIG. 5. For another example, the meta-BWP occupies different frequency domain resources in different time units, is discontinuous in the frequency domain, and is continuous in the time domain, as shown in (3) of FIG. 5. For another example, the meta-BWP occupies different frequency domain resources in different time units, is discontinuous in the frequency domain, and is also discontinuous in the time domain, as shown in (4) of FIG. 5.

[0286] It can be understood that the meta-BWP time-frequency patterns shown in FIGS. 4 and 5 are examples and do not limit the meta-BWP time-frequency patterns.

[0287] Optionally, the meta-BWP can be divided into an uplink meta-BWP and a downlink meta-BWP. The uplink meta-BWP can be used for uplink transmission between the terminal device and the M network devices. For example, the uplink meta-BWP can occupy the same frequency domain resources in different time units, or the uplink meta-BWP can also occupy different frequency domain resources in different time units. For details, refer to the description of the meta-BWP, which will not be repeated here. The downlink meta-BWP can be used for downlink transmission between the terminal device and the M network devices. For example, the downlink meta-BWP can occupy the same frequency domain resources in different time units, or the uplink meta-BWP can also occupy different frequency domain resources in different time units. For details, refer to the description of the meta-BWP, which will not be repeated here.

[0288] Optionally, the meta-BWP time-frequency pattern can be predefined, or can also be determined based on pre-agreed information (for example, a formula, or a parameter, etc.), or can also be configured by the network device, which is not limited. For example, the network device can send configuration information of the meta-BWP to the terminal device; accordingly, the terminal device receives the configuration information of the meta-BWP from the network device. Wherein, the configuration information of the meta-BWP can be used to determine the meta-BWP time-frequency pattern. Optionally, the configuration information of the meta-BWP can be carried by a master information block (MIB); or the configuration information of the meta-BWP can also be carried by a system information block (SIB); or the configuration information of the meta-BWP can also be carried by high-layer signaling, which is not limited. Optionally, the MIB can be carried by a physical broadcast channel (PBCH). Optionally, the SIB can be carried by a physical downlink shared channel (PDSCH). Optionally, the high-layer signaling can be radio resource control (RRC) signaling, or medium access control-control element (MAC-CE) signaling, etc., which is not limited.

[0289] The time unit in the embodiments of the present application can be one or several symbols, or can also be one or several slots, or can also be one or several mini-slots, or can also be one or several sub-frames, or can also be one or several frames, etc., and the present application does not limit the implementation form of the time unit. Wherein, the plurality of time units can be continuous in time, or can be discrete, which is not limited.

[0290] 3, the first access mode and the second access mode

[0291] The embodiment of the application provides an access mode, which is referred to as a first access mode. The first access mode can be understood as an access mode corresponding to a first transmission mode. For example, a terminal device can obtain configuration information of the first transmission mode through the first access mode, and / or the terminal device can use (or access or enter) the first transmission mode through the first access mode. For example, the first access mode can be initial access, and can be used to obtain the configuration information of the first transmission mode. For another example, the first access mode can be non-initial access, and can be used to access (or enter or cut in, etc.) the first transmission mode. For another example, the first access mode can include initial access and non-initial access, and can be used to obtain the configuration information of the first transmission mode and access the first transmission mode.

[0292] Optionally, the first access mode can also be referred to as meta access or a dedicated access mode, and the naming of the first access mode in the embodiment of the application is not limited.

[0293] The second access mode is different from the first access mode. For example, the second access mode can be understood as an access mode other than the first access mode. For example, the second access mode can be an access mode corresponding to a second transmission mode. For example, the second access mode can be a base station-centered access mode.

[0294] 4, W sequence

[0295] For example, part or all of the sequences in the embodiment of the application can be generated based on a W sequence. The W sequence has low ambiguity, so that the sequence resource obtained based on the W sequence has good robustness. Based on the W sequence, more sequence resources can be obtained, which is beneficial to the expansion of sequence resources and can improve the problem of insufficient sequence resources, and provides services for more users.

[0296] The W sequence can be determined by a first length and a second length. The first length can be understood as the mapping length of the sequence, or the transmission length of the sequence, or the actual length of the sequence, or the generation length of the sequence, and the like, which is not limited. The second length can be understood as the length of the sequence in a generation period, or the length of the sequence in a complete period, and the like, which is not limited. For example, the first length is denoted as N, the second length is denoted as P, N is an integer greater than 1. P is an integer greater than 1.

[0297] For example, the W sequence can satisfy the following formula (1).

[0298] Wherein, x(n) is the W sequence, e is a constant, π is a circular constant, j is an imaginary unit, j 2= -1. n is an integer greater than 0 and less than or equal to N, or n is an integer greater than or equal to 0 and less than or equal to (N-1), N being the first length. P is the second length. p(n) can be a polynomial with the highest order d, d being an integer greater than or equal to 0. For example, p(n) can be understood as the generating polynomial of x(n).

[0299] Exemplarily, p(n) can satisfy the following formula (2). p(n) = p d n d + p d-1 n d-1 +…+ p1n + p0 Formula (2)

[0300] wherein p i may be referred to as the i-th order coefficient, i being an integer greater than 0 and less than or equal to d. For example, assuming d is greater than 1, p d is not 0, p d may be referred to as the highest order coefficient, p d-1 may be referred to as the second highest order coefficient, and p1may be referred to as the first order coefficient.

[0301] The sequence of the first P terms generated according to formula (1) and formula (2) is referred to as a generating period, or a complete period. Alternatively, the first length and the second length can be equal, or can also be unequal. For example, the first length and the second length are equal, i.e. N = P is equal, then the sequence within a generating period is taken for mapping. For another example, the first length is less than the second length, i.e. N < P, then the sequence of the first N terms within a generating period is taken for mapping. For yet another example, the first length is greater than the second length, i.e. N > P, then the sequence within a generating period and the sequence of the first (N-P) terms within a generating period are taken for mapping.

[0302] For an example, assuming P = 5, the sequence within a generating period is denoted as {x1, x2, x3, x4, x5}. If N = 5, then {x1, x2, x3, x4, x5} can be taken for mapping. Or, if N = 3, then {x1, x2, x3} can be taken for mapping. Or, if N = 7, then {x1, x2, x3, x4, x5, x1, x2} can be taken for mapping.

[0303] Alternatively, the second length can be a prime number. That is, the value of P can be a prime number. Compared with the value of P being a composite number, the value of P being a prime number cannot be divided by other natural numbers, so that more sequences with good autocorrelation and cross-correlation can be generated under the condition that d is the same and the length of the sequence satisfies certain conditions, thereby more users can be served and the capacity can be expanded.

[0304] The aforementioned d is an integer greater than or equal to 0. In an example, d = 2, i.e., the highest order term of the W sequence can be a quadratic term. Exemplarily, when d = 2, the W sequence can satisfy the following formula (3).

[0305] In another example, d = 3, i.e., the highest order term of the W sequence can be a cubic term. Exemplarily, when d = 3, the W sequence can satisfy the following formula (4).

[0306] In another example, d = 4, i.e., the highest order term of the W sequence can be a quartic term. Exemplarily, when d = 4, the W sequence can satisfy the following formula (5).

[0307] wherein Q is the number of cyclic shifts in the time domain, θ is a constant, and α, μ, γ and τ are all integers. For example, α can be an integer greater than or equal to 0 and less than or equal to (P-1). For example, μ can be an integer greater than or equal to 0 and less than or equal to (P-1). For example, γ can be an integer greater than or equal to 0 and less than or equal to (P-1). For example, τ can be an integer greater than or equal to 0 and less than or equal to (Q-1). The remaining parameters in the formula (3) to the formula (5) can be described with reference to the description of the formula (1), and will not be repeated here.

[0308] It can be understood that the above formula (3) to formula (5) are examples and are not limited thereto. For example, d can also be 1, and can also be 5 or other integers other than 2, 3 and 4. Exemplarily, the greater the value of d, the more terms of the polynomial used by the W sequence, and the greater the number of different sequences generated based on the W sequence.

[0309] 5. Connected state, inactive state and idle state

[0310] 1) Connected state, which can also be referred to as RRC connected state, can be understood as a state in which an RRC connection is established between a terminal device and a network device. For example, when the terminal device is in the connected state, the terminal device has completed authentication and security negotiation with the network device, and the wireless resource has been allocated, and the terminal device can perform data and control signaling transmission with the network device.

[0311] In an example, the terminal device can enter the connected state by the following steps: step A1, the terminal device sends an RRC connection request message to the network device, and the network device receives the RRC connection request message from the terminal device; step A2, the network device sends an RRC connection confirmation message to the terminal device, and the terminal device receives the RRC connection confirmation message from the network device; step A3, the terminal device sends an RRC connection completion message to the network device, and the network device receives the RRC connection completion message from the terminal device; step A4, the network device sends an RRC configuration message to the terminal device, and the terminal device receives the RRC configuration message from the network device, the RRC configuration message including allocation of radio resources and negotiation of security parameters, etc.; and step A5, the terminal device performs corresponding configuration operations according to the RRC configuration message, completes RRC connection establishment, and enters the connected state.

[0312] It can be understood that the connected state is a relatively stable state, and once established, the terminal device and the network device can communicate for a long time. In addition, when the terminal device is in the connected state, the terminal device can periodically send an RRC connection maintenance message to the network device to maintain the stability of the connection.

[0313] 2) The inactive state, which can also be referred to as the RRC inactive state, can be understood as a state in which the RRC protocol stack is inactive. For example, when the terminal device is in the inactive state, there is no wireless signal transmission between the terminal device and the network device, which can prolong the battery life of the terminal device. For another example, when the terminal device is in the inactive state, the terminal device will not receive or send data, which can reduce the use of network resources. For another example, when the terminal device is in the inactive state, the terminal device cannot receive any messages or instructions from the network device. For another example, when the terminal device is in the inactive state, the terminal device can switch to the connected state, and the switching delay is small, and through the mutual switching of the connected state and the inactive state, the connection time and the use of network resources can be reduced.

[0314] In an example, when the terminal device is in the inactive state, the terminal device can perform at least one of the following: sending an RRC connection request message (e.g., an RRC connection request message) to request switching from the inactive state to the connected state; periodically sending an RRC connection release message (e.g., an RRC connection release message) to maintain the connection between the terminal device and the network device; periodically sending an RRC measurement report message (e.g., an RRC measurement report message) to send the measurement result of the terminal device to the network device, which is conducive to the network device obtaining a better network scheduling decision; periodically sending an RRC status message to enable the network device to obtain the status of the terminal device; or periodically sending an RRC idle message (e.g., an RRC idle message) to maintain the connection between the terminal device and the network device.

[0315] 3) The idle state, which can also be referred to as the RRC idle state, can be understood as a state in which the terminal device does not need to communicate directly with the network device. For example, when the terminal device is in the idle state, the terminal device does not establish an RRC connection with the network device and does not occupy network resources. For another example, when the terminal device is in the idle state, the terminal device can receive broadcast messages and system information, but cannot actively send information to the network device.

[0316] In an example, when the terminal device is in the idle state, the terminal device can perform at least one of the following: monitoring broadcast messages and system information to obtain information such as a cell identity, a frequency band, a system bandwidth, and a public land mobile network (PLMN); sending an RRC connection request message or an RRC connection release request message; or performing a timer-related operation, which can be, for example, a T300 timer, a T301 timer, or a T310 timer. For example, when the terminal device is in the idle state, the terminal device can send an RRC connection request message when the terminal device needs to establish an RRC connection with the network device. For another example, when the terminal device is in the idle state, the terminal device can send an RRC connection release request message when the terminal device needs to release an already established RRC connection.

[0317] It can be understood that when the terminal device is in the idle state, the terminal device passively receives broadcast messages and system messages and generally cannot actively send messages to the network device except for an RRC connection request message or an RRC connection release request message. In addition, when the terminal device is in the idle state, the terminal device can ensure the stability of the RRC connection by performing a T300 timer, a T301 timer, or a T310 timer.

[0318] The communication method provided by the embodiment of the present application will be described below with reference to the accompanying drawings. The method can be applied to the communication system shown in FIG. 1 or FIG. 3, but is not limited thereto. The embodiment of the present application takes the interaction between the first terminal device and the first network device and the second network device as an example for description. It can be understood that the communication method provided by the embodiment of the present application can also be applied to the end-to-end communication scenarios such as V2X and D2D, and the implementation process can refer to the description of the communication between the terminal device and the network device in the following implementation, which will not be described herein.

[0319] The first network device and the second network device belong to M network devices. Optionally, the first network device and the second network device can be the same network device, or can be two different network devices. In the case where no special description is made, the first network device and the second network device are taken as two different network devices in the following description.

[0320] In the case where no special description is made, the "first terminal device" in the present application can be the first terminal device itself, or can be a component (for example, a processor, a circuit, a chip, or a chip system, etc.) in the first terminal device, or can also be a logic module or software capable of realizing all or part of the functions of the first terminal device. Similarly, in the case where no special description is made, the "first network device" in the present application can be the first network device itself, or can be a component (for example, a processor, a circuit, a chip, or a chip system, etc.) in the first network device, or can also be a logic module or software capable of realizing all or part of the functions of the first network device. In the case where no special description is made, the "second network device" in the present application can be the second network device itself, or can be a component (for example, a processor, a circuit, a chip, or a chip system, etc.) in the second network device, or can also be a logic module or software capable of realizing all or part of the functions of the second network device.

[0321] It can be understood that in the embodiment of the present application, the first terminal device, the first network device or the second network device can perform part or all of the steps in the embodiment of the present application, and these steps or operations are only examples, and the embodiment of the present application can also perform other operations or various modifications of the operations. In addition, each step can be performed in a different order as presented in the embodiment of the present application, and it is possible that not all the operations in the embodiment of the present application are performed.

[0322] FIG. 6 is a flow diagram of a first communication method provided by the embodiment of the present application. As shown in FIG. 6, the method can include the following steps.

[0323] S601: The first network device sends a first message. For example, the first network device can send the first message to the first terminal device.

[0324] The first terminal device receives the first message. For example, the first terminal device can receive the first message from the first network device.

[0325] The cell corresponding to the first network device belongs to the plurality of cells, or the first network device belongs to the M network devices, or the plurality of cells includes the cell corresponding to the first network device, or the plurality of cells includes the cell corresponding to the first network device. Optionally, the first message can be a configuration message of the first transmission mode, and the first message carries configuration information of the first transmission mode.

[0326] The first message can include at least one of the following: the first identifier, information indicating the at least one sequence, or the first resource. Optionally, the information indicating the at least one sequence can be a sequence identifier set, a sequence identifier table, or the like, and the implementation form of the information indicating the at least one sequence is not limited in the embodiments of the present application. For example, the information indicating the at least one sequence can be one or more sets, or one or more tables, or an identifier range, and the like, which are not limited.

[0327] For brevity, hereinafter, the first set is taken as an example of the information indicating the at least one sequence. In other words, the first set is used to indicate the at least one sequence. It can be understood that in the following, the "first set" can be replaced by "at least one sequence" or "information indicating the at least one sequence", and the "sequence indicated by the first set" can be replaced by "at least one sequence", and the "at least one sequence indicated by the first set" can be replaced by "at least one sequence". Accordingly, the first message can include at least one of the first identifier, the first set, or the first resource.

[0328] S602: The first terminal device communicates with the network devices corresponding to the plurality of cells according to the first message.

[0329] For example, the first terminal device can communicate with at least one of the M network devices according to the first message. For example, the first terminal device can transmit the sequences indicated by the first set to at least one of the M network devices according to the first message. Optionally, the at least one of the M network devices includes the first network device, that is, the first terminal device can communicate with the first network device according to the first message. For example, the first terminal device can transmit part or all of the sequences indicated by the first set to the first network device according to the first message. In FIG. 6, the first terminal device transmits the sequences indicated by the first set to the first network device according to the first message is taken as an example.

[0330] In S601, it is mentioned that the first message can include at least one of the following: the first identifier, the first set, or the first resource. The following are introduced respectively.

[0331] 1. A first identity, which can also be referred to as a UE identity (ID). The naming of the first identity is not limited in the embodiments of the present application. The first identity can be used to identify the first terminal device in multiple cells; or the first identity can be used to identify the first terminal device in a first area; or the first identity can be used to identify the first terminal device in a first transmission mode; or the first identity can be used to identify a context of the first terminal device in the first transmission mode; or the first identity can be used to identify a context of the first terminal device in a first access mode; or the first identity can be used to identify a context of the first terminal device in multiple cells or in the first area. Optionally, the context of the first terminal device can include a first set and / or a first resource.

[0332] Optionally, the first identity can be used to uniquely identify the first terminal device in multiple cells or in the first area; or the first identity can be used to uniquely identify the first terminal device in the first transmission mode; or the first identity can be used to uniquely identify a context of the first terminal device in the first transmission mode; or the first identity can be used to uniquely identify a context of the first terminal device in the first access mode; or the first identity can be used to identify a context of the first terminal device in multiple cells or in the first area. Exemplarily, the first identity can be a unique UE ID, which is used as an ID for scheduling the first terminal device in multiple cells or in the first area, or which is used as an ID for scheduling the first terminal device in the first transmission mode, or which is used as an ID for scheduling the first terminal device in the first access mode.

[0333] Optionally, the first identity can also be used to identify multiple terminal devices, which include the first terminal device. For example, the first identity can be an identity of a group of UEs. For example, the first identity can be used to identify the multiple terminal devices in multiple cells or in the first area; or the first identity can be used to identify the multiple terminal devices in the first transmission mode; or the first identity can be used to identify a context of the multiple terminal devices in the first transmission mode; or the first identity can be used to identify a context of the multiple terminal devices in multiple cells or in the first area; or the first identity can be used to identify a context of the multiple terminal devices in the first access mode.

[0334] Optionally, the first identity can be used to page the first terminal device in multiple cells or in the first area.

[0335] In a possible implementation, the first identifier can be determined by a radio network temporary identity (RNTI) of the first terminal device. For example, the first identifier can be an extended identifier of the RNTI of the first terminal device. For example, the first identifier can be denoted as an extended-RNTI (E-RNTI). For example, the E-RNTI of different terminal devices can have the same length or different lengths. For example, the length of the E-RNTI can dynamically change according to the number of users using the first transmission mode in the plurality of cells or the first area. Optionally, the length of the E-RNTI that has been allocated has no effect on the length of the E-RNTI that is subsequently allocated.

[0336] In one example, the first identifier can be determined by an identifier of the first cell and an RNTI of the first terminal device. For example, the first identifier includes the identifier of the first cell and the RNTI of the first terminal device. For example, the first identifier can include part or all of the information in the identifier of the first cell and part or all of the information in the RNTI of the first terminal device. For example, the first identifier can include X bits of the identifier of the first cell and the RNTI of the first terminal device, where X is a positive integer. The X bits can identify the first terminal device in the plurality of cells, without using the complete RNTI and the identifier of the cell, which is beneficial for saving transmission resources.

[0337] For example, the first cell can be a cell corresponding to the first network device, or the first cell can be an initially accessed cell, or the first cell can be a cell in the plurality of cells other than the initially accessed cell, without limitation.

[0338] In another example, the first identifier can also be determined by an identifier of the first area and an RNTI of the first terminal device. For example, the first identifier includes the identifier of the first area and the RNTI of the first terminal device. For example, the first identifier can include part or all of the information in the identifier of the first area and part or all of the information in the RNTI of the first terminal device. For example, the first identifier can include Y bits of the identifier of the first area and the RNTI of the first terminal device, where Y is a positive integer. The Y bits can identify the first terminal device in the first area, without using the complete RNTI and the identifier of the area, which is beneficial for saving transmission resources. For details of the first area, refer to the foregoing description.

[0339] In another example, the first identifier can also be determined by the identifier of the first cell, the identifier of the first area, and the RNTI of the first terminal device. For example, the first identifier includes the identifier of the first cell, the identifier of the first area, and the RNTI of the first terminal device. For example, the first identifier includes part or all of the information in the identifier of the first cell, part or all of the information in the identifier of the first area, and part or all of the information in the RNTI of the first terminal device. For example, the first identifier can include Z bits of the identifier of the first cell, the identifier of the first area, and the RNTI of the first terminal device, where Z is a positive integer. The Z bits can identify the first terminal device in the first area and the plurality of cells without using the complete RNTI, cell identifier, and area identifier, which is beneficial for saving transmission resources. The first cell and the first area are described above and will not be repeated here.

[0340] Optionally, the first identifier can be configured by the first network device, or can be predefined, without limitation.

[0341] 2. The first set can be used to indicate at least one sequence. For example, the first set can include an identifier of at least one sequence. The at least one sequence belongs to the sequence resource described above. For example, the at least one sequence indicated by the first set can be understood as: the sequence resource configured by the first network device for the first terminal device; or understood as: the sequence resource configured by the first network device for the first terminal device for transmission in the plurality of cells or the first area.

[0342] For example, the at least one sequence indicated by the first set can include at least one of the following: a paging sequence, a reference signal sequence, a synchronization sequence, a random access sequence, a sequence for generating a WUS, a sequence for generating a HARQ signal, or a sequence for generating data. The reference signal sequence is described above and will not be repeated here. The sequences indicated by the first set are described below.

[0343] 1) Paging sequence

[0344] For example, the at least one sequence indicated by the first set can include at least one paging sequence, or the at least one sequence indicated by the first set can include at least one group of paging sequences. Each group of paging sequences in the at least one group of paging sequences includes at least one paging sequence. Optionally, the at least one group of paging sequences can be replaced by at least one set of paging sequences.

[0345] In one implementation, the first set is used to indicate at least one paging sequence, and the at least one paging sequence can be used to page the first terminal device. For example, the at least one paging sequence can be used to page the first terminal device in a plurality of cells or a first area. For example, each of the at least one paging sequence can be used to page the first terminal device. For example, each of the at least one paging sequence included in the at least one group of paging sequences can be used to page the first terminal device. For example, each of the at least one paging sequence included in the at least one group of paging sequences can be used to page the first terminal device in a plurality of cells or a first area. For example, each of the at least one group of paging sequences can be used to page the first terminal device. For example, each of the at least one group of paging sequences can be used to page the first terminal device in a plurality of cells or a first area. In this example, each of the at least one group of paging sequences is used to page the first terminal device, so that the first terminal device needs to check all the paging sequences in the group of paging sequences indicated by the first set to determine that the first terminal device is paged. Compared with a single paging sequence, a group of paging sequences can carry more information.

[0346] In another implementation, the first set is used to indicate at least one group of paging sequences, and the at least one group of paging sequences can be used to page the first terminal device. For example, the at least one group of paging sequences can be used to page the first terminal device in a plurality of cells or a first area. For example, each of the at least one paging sequence included in the at least one group of paging sequences can be used to page the first terminal device. For example, each of the at least one paging sequence included in the at least one group of paging sequences can be used to page the first terminal device in a plurality of cells or a first area. For example, each of the at least one group of paging sequences can be used to page the first terminal device. For example, each of the at least one group of paging sequences can be used to page the first terminal device in a plurality of cells or a first area. In this example, each of the at least one group of paging sequences is used to page the first terminal device, so that the first terminal device needs to check all the paging sequences in the group of paging sequences indicated by the first set to determine that the first terminal device is paged. Compared with a single paging sequence, a group of paging sequences can carry more information.

[0347] In one possible implementation, the first terminal device can support dedicated paging. Optionally, the first terminal device supporting dedicated paging can be understood as that the paging sequence indicated by the first set includes a paging sequence dedicated to the first terminal device; or can be understood as that the paging sequence indicated by the first set includes a specific paging sequence of the first terminal device; or can be understood as that the paging sequence indicated by the first set includes a paging sequence used only to page the first terminal device. For example, the paging sequence (i.e., the paging sequence indicated by the first set) available to the first terminal device is different from the paging sequence available to a second terminal device, which is another terminal device other than the first terminal device.

[0348] In a possible implementation, the at least one paging sequence indicated by the first set can be generated based on a W sequence, or the at least one set of paging sequences indicated by the first set can be generated based on a W sequence. Wherein, the W sequence is described in the foregoing term introduction, and will not be repeated here. For example, the first terminal device can determine, according to the W sequence, a paging sequence that supports transmission in multiple cells or a first area, and the paging sequence that supports transmission in multiple cells or the first area includes the paging sequence indicated by the first set. Alternatively, the first terminal device can determine, according to a related parameter of the W sequence, a paging sequence that supports transmission in multiple cells or a first area. In this implementation, the paging sequence indicated by the first set is generated based on the W sequence, and the W sequence has low ambiguity, so that the paging sequence generated based on the W sequence has good robustness. In addition, a large number of paging sequences can be generated based on the W sequence, which is beneficial to the expansion of the paging sequence and improves the problem of insufficient sequence resources, thereby being able to provide services for more users.

[0349] In an implementation, the related parameters of the W sequence used when generating the paging sequence can include at least one of the following: a first length, a second length, Q, θ, or at least one coefficient. Q and θ are described in the foregoing term introduction, and will not be repeated here. Wherein, the at least one coefficient can be understood as a coefficient of a polynomial used by the W sequence or a coefficient of a monomial. For example, d = 2, the at least one coefficient can include at least one of the following: γ or τ, as shown in formula (3). For another example, d = 3, the at least one coefficient can include at least one of the following: μ, γ or τ, as shown in formula (4). For another example, d = 4, the at least one coefficient can include at least one of the following: α, μ, γ or τ, as shown in formula (5). Wherein, the first length, the second length, Q, θ, α, μ, γ and τ are described in the foregoing term introduction, and will not be repeated here.

[0350] In an implementation, the related parameters of the W sequence used when generating the paging sequence can be predefined, or configured by a network device (for example, the first network device), or part of the parameters are predefined and the remaining parameters are configured by the network device (for example, the first network device), without limitation. For example, the first network device can send an eleventh message to the first terminal device, and the eleventh message is used to indicate (or determine) the related parameters of the W sequence; accordingly, the first terminal device can receive the eleventh message from the first network device. Alternatively, the related parameters can be carried by a SIB, or can be carried by a MIB, or can be carried by a high layer signaling, without limitation. The high layer signaling can be an RRC signaling, or can be a MAC-CE signaling, without limitation.

[0351] In a possible implementation, the highest order term of the W sequence used when generating the plurality of paging sequences can be a quadratic term, as shown in equation (3); or the highest order term of the W sequence used when generating the plurality of paging sequences can also be a cubic term, as shown in equation (4); or the highest order term of the W sequence used when generating the plurality of paging sequences can also be a quartic term, as shown in equation (5), which is not limited. Alternatively, the highest order term of the W sequence used when generating the plurality of paging sequences can be replaced with: the highest order term used when generating the plurality of paging sequences based on the W sequence.

[0352] In a possible implementation, the highest order term used when generating the plurality of paging sequences based on the W sequence can be different, or can also be the same. The correlation between the plurality of paging sequences generated using the same highest order term is better than the correlation between the plurality of paging sequences generated using different highest order terms, which is beneficial to obtain better detection performance.

[0353] In a possible implementation, at least one order term of the plurality of order terms used when generating the plurality of paging sequences based on the W sequence can be different from the highest order term. Alternatively, the second highest order term used when generating the plurality of paging sequences based on the W sequence is different, and / or the first order term used when generating the plurality of paging sequences based on the W sequence is different. For example, the highest order term used when generating the plurality of paging sequences based on the W sequence is the same, the second highest order term used when generating the plurality of paging sequences based on the W sequence is different, and the first order term used when generating the plurality of paging sequences based on the W sequence is the same. For another example, the highest order term used when generating the plurality of paging sequences based on the W sequence is the same, the second highest order term used when generating the plurality of paging sequences based on the W sequence is the same, and the first order term used when generating the plurality of paging sequences based on the W sequence is different. For another example, the highest order term used when generating the plurality of paging sequences based on the W sequence is the same, the second highest order term used when generating the plurality of paging sequences based on the W sequence is different, and the first order term used when generating the plurality of paging sequences based on the W sequence is different. In this implementation, the second highest order term used when generating the plurality of paging sequences based on the W sequence is different, so that the first terminal device can detect the received paging sequence through the correlation position in the time domain or the frequency domain correlation peak position after inverse fast fourier transform (IFFT), which can reduce the detection complexity. The first order term used when generating the plurality of paging sequences based on the W sequence is different, so that the first terminal device can detect the received paging sequence through the correlation position in the time domain or the time domain correlation peak position after IFFT, which can reduce the detection complexity.

[0354] Optionally, the term "the highest order term is same" in the embodiments of the present application can be replaced by "the highest order term coefficient is same". The term "the second highest order term is same" can be replaced by "the second highest order term coefficient is same". The term "the second highest order term is different" in the embodiments of the present application can be replaced by "the second highest order term coefficient is different". The term "the first order term is different" in the embodiments of the present application can be replaced by "the first order term coefficient is different".

[0355] For example, it is assumed that the first set of indicated multiple paging sequences includes paging sequence 1 and paging sequence 2, denoted as x1(n) and x2(n) respectively, and the corresponding generation polynomials of x1(n) and x2(n) are denoted as p1(n) and p2(n) respectively. The highest order term coefficients in p1(n) and p2(n) are same, and the second highest order term coefficients are different, so that the first terminal device can detect whether the received sequence is x1(n) or x2(n) through the correlation position in time domain or the frequency domain correlation peak position after IFFT; or, the highest order term coefficients in p1(n) and p2(n) are same, and the second highest order term coefficients are same, and the first order term coefficients are different, so that the first terminal device can detect whether the received sequence is x1(n) or x2(n) through the correlation position in time domain or the time domain correlation peak position after IFFT; or, the highest order term coefficients in p1(n) and p2(n) are same, and the second highest order term coefficients are different, and the first order term coefficients are also different, so that the first terminal device can detect whether the received sequence is x1(n) or x2(n) through the correlation position in time domain or the frequency domain correlation peak position and / or the time domain correlation peak position after IFFT. Optionally, the detection result of the first terminal device can also indicate that the received sequence is neither x1(n) nor x2(n).

[0356] In a possible implementation, the information indicated by different paging sequences in the first set of indicated multiple paging sequences can be different; or, the information indicated by different paging sequences in different groups of paging sequences indicated by the first set can be different. For example, it is assumed that the first set of indicated sequences includes a first paging sequence and a second paging sequence, and the information indicated by the first paging sequence and the information indicated by the second paging sequence can be different. The first paging sequence can be one paging sequence, or can be a group of paging sequences, which is not limited. The second paging sequence can be one paging sequence, or can be a group of paging sequences, which is not limited.

[0357] In a possible implementation, the roles (or functions, or uses) of the multiple paging sequences indicated by the first set can be different. For example, assuming that the first set indicates that the first paging sequence and the third paging sequence are included in the sequence, the role of the first paging sequence and the role of the third paging sequence can be different. Optionally, the first paging sequence can be used for at least one of the following: paging at least one terminal device, data transmission, notifying system information update, or control information transmission. The at least one terminal device includes the first terminal device. The first paging sequence can be one paging sequence, or can also be a group of paging sequences, without limitation. The third paging sequence can be one paging sequence, or can also be a group of paging sequences, without limitation. The control information transmission can be DCI transmission, without limitation. The control information can be state change indication, or uplink / downlink grant, without limitation.

[0358] For example, assuming that the first set indicates that the paging sequence 1, the paging sequence 2, the paging sequence 3, and the paging sequence 4 are included in the sequence, and the first resource includes the resource 1 and the resource 2. The paging sequence 1 is used for data 1 transmission, the paging sequence 2 is used for DCI 1 transmission, the paging sequence 3 is used for data 2 transmission, and the paging sequence 4 is used for DCI 2 transmission. The paging sequence 1 and the paging sequence 2 are carried by the resource 1, and the paging sequence 3 and the paging sequence 4 are carried by the resource 2, as shown in FIG. 7. It can be understood that the format of the information indicated by the paging sequence is not limited in the embodiments of the present application.

[0359] It can be understood that the format of the information indicated by the paging sequence in FIG. 7 is taken as an example and is not limited thereto. It can be understood that the format of the information indicated by the paging sequence can be predefined, or can also be configured by the network device (for example, the first network device), without limitation. Accordingly, the first terminal device can receive the information in a specific format on the first resource. The receiving of the information in the specific format can be understood as detecting the information in at least one predefined format (or at least one configured format) in a blind detection manner.

[0360] It can be understood that the information indicated by the first paging sequence is different from the information indicated by the second paging sequence, the role of the first paging sequence and the role of the second paging sequence can be the same, or can also be different. For example, the information indicated by the first paging sequence and the information indicated by the second paging sequence are different, but both are used for notifying system information update. The role of the first paging sequence and the role of the third paging sequence are different, the information indicated by the first paging sequence and the information indicated by the third paging sequence can be the same, or can also be different. For example, the information indicated by the first paging sequence and the information indicated by the third paging sequence are the same, and different roles can be distinguished by occupying different resources.

[0361] 2) SRS sequence

[0362] Exemplarily, the at least one sequence indicated by the first set can comprise at least one SRS sequence, or the at least one sequence indicated by the first set can comprise at least one group of SRS sequences. Each group of SRS sequences in the at least one group of SRS sequences comprises at least one SRS sequence. Alternatively, the at least one group of SRS sequences can be replaced by: at least one SRS sequence set.

[0363] In a possible implementation, the at least one SRS sequence indicated by the first set can be generated based on a W sequence, or the at least one group of SRS sequences indicated by the first set can be generated based on a W sequence. Wherein, the description of the W sequence can refer to the content described in the foregoing term introduction, and will not be repeated here. For example, the first terminal device can determine, according to the W sequence, an SRS sequence that supports transmission in multiple cells or a first area, and the SRS sequence that supports transmission in multiple cells or the first area comprises the SRS sequence indicated by the first set. Alternatively, the first terminal device can determine, according to a related parameter of the W sequence, an SRS sequence that supports transmission in multiple cells or a first area. In this implementation, the SRS sequence indicated by the first set is generated based on the W sequence, and the W sequence has low ambiguity, so that the SRS sequence generated based on the W sequence has good robustness. In addition, a large number of SRS sequences can be generated based on the W sequence, which is beneficial to the expansion of SRS sequences and improves the problem of insufficient sequence resources, thereby being able to provide services for more users.

[0364] Alternatively, the related parameters of the W sequence used when generating the SRS sequence can refer to the description of the related parameters of the W sequence used when generating the paging sequence, and will not be repeated here. Alternatively, the related parameters of the W sequence used when generating the SRS sequence can be different from or partially different from the related parameters of the W sequence used when generating the paging sequence, which is not limited.

[0365] In a possible implementation, the highest order term of the W sequence used when generating the plurality of SRS sequences can be a quadratic term, as shown in formula (3); or the highest order term of the W sequence used when generating the plurality of SRS sequences can also be a cubic term, as shown in formula (4); or the highest order term of the W sequence used when generating the plurality of SRS sequences can also be a quartic term, as shown in formula (5), which is not limited. Alternatively, the highest order term of the W sequence used when generating the plurality of SRS sequences can be replaced by: the highest order term used when generating the plurality of SRS sequences based on the W sequence.

[0366] In a possible implementation, the highest order used for generating the plurality of SRS sequences based on the W sequence can be different or can be the same. The correlation between the plurality of SRS sequences generated using the same highest order is better than the correlation between the plurality of SRS sequences generated using different highest orders, which is conducive to obtaining better detection performance.

[0367] In a possible implementation, at least one order other than the highest order used for generating the plurality of SRS sequences based on the W sequence can be different. Optionally, the second-highest order used for generating the plurality of SRS sequences based on the W sequence is different, and / or the first order used for generating the plurality of SRS sequences based on the W sequence is different. For example, the highest order used for generating the plurality of SRS sequences based on the W sequence is the same, the second-highest order used for generating the plurality of SRS sequences based on the W sequence is different, and the first order used for generating the plurality of SRS sequences based on the W sequence is the same. For another example, the highest order used for generating the plurality of SRS sequences based on the W sequence is the same, the second-highest order used for generating the plurality of SRS sequences based on the W sequence is the same, and the first order used for generating the plurality of SRS sequences based on the W sequence is different. For yet another example, the highest order used for generating the plurality of SRS sequences based on the W sequence is the same, the second-highest order used for generating the plurality of SRS sequences based on the W sequence is different, and the first order used for generating the plurality of SRS sequences based on the W sequence is different. In this implementation, the second-highest order used for generating the plurality of SRS sequences based on the W sequence is different, so that the receiving end (for example, the network device) can detect the received SRS sequence through the correlation position in the time domain or the frequency domain correlation peak position after IFFT, and the detection complexity can be reduced. The first order used for generating the plurality of SRS sequences based on the W sequence is different, so that the receiving end can detect the received SRS sequence through the correlation position in the time domain or the time domain correlation peak position after IFFT, and the detection complexity can be reduced.

[0368] In a possible implementation, the information indicated by different SRS sequences in the plurality of SRS sequences indicated by the first set can be different, or the information indicated by different groups of SRS sequences in the plurality of groups of SRS sequences indicated by the first set can be different. For example, it is assumed that the first SRS sequence and the second SRS sequence are included in the sequences indicated by the first set, and the information indicated by the first SRS sequence and the information indicated by the second SRS sequence can be different. The first SRS sequence can be one SRS sequence or one group of SRS sequences, which is not limited. The second SRS sequence can be one SRS sequence or one group of SRS sequences, which is not limited.

[0369] In a possible implementation, the roles of different SRS sequences in the plurality of SRS sequences indicated by the first set can be different. For example, assume that the first set indicates that the first SRS sequence and the third SRS sequence are included in the plurality of SRS sequences, the role of the first SRS sequence can be different from that of the third SRS sequence. Optionally, the first SRS sequence can be used for at least one of the following: positioning, measurement, user identification, channel estimation, data transmission, or the like, without limitation. The first SRS sequence can be one SRS sequence or a group of SRS sequences, without limitation. The third SRS sequence can be one SRS sequence or a group of SRS sequences, without limitation.

[0370] In an implementation, the first SRS sequence can be used to send a scheduling request (SR), and / or the first SRS sequence can be used to send a buffer status report (BSR).

[0371] It can be understood that the information indicated by the first SRS sequence is different from that indicated by the second SRS sequence, the role of the first SRS sequence can be the same as or different from that of the second SRS sequence. For example, the information indicated by the first SRS sequence and the second SRS sequence is different, but both are used for channel estimation. The role of the first SRS sequence is different from that of the third SRS sequence, and the information indicated by the first SRS sequence can be the same as or different from that indicated by the third SRS sequence. For example, the information indicated by the first SRS sequence and the third SRS sequence is the same, and different roles can be distinguished by occupying different resources.

[0372] 3) Synchronization sequence

[0373] For example, the at least one sequence indicated by the first set can include at least one synchronization sequence. The at least one synchronization sequence can be used for synchronization. For example, the at least one synchronization sequence can be used for synchronization between the first terminal device and the network device. Optionally, the at least one synchronization sequence can be used for synchronization within a plurality of cells or a first area. For example, the at least one synchronization sequence can be used for synchronization between the first terminal device and the network device corresponding to a plurality of cells. That is, the at least one synchronization sequence can be used for synchronization between the first terminal device and M network devices. Through the example, the first terminal device does not need to configure the synchronization sequence multiple times when moving in a plurality of cells, which can simplify mobility management and update, and is conducive to reducing the functions of the terminal device and the network device.

[0374] In an implementation, each of the at least one synchronization sequence indicated by the first set can be used for synchronization of the first terminal device in the plurality of cells or the first area, i.e., each of the at least one synchronization sequence can be used for synchronization between the first terminal device and the M network devices. For example, the first set indicates the at least one synchronization sequence, and the first synchronization sequence included in the at least one synchronization sequence can be used for synchronization between the first terminal device and the M network devices.

[0375] In an implementation, the first set indicates a plurality of synchronization sequences, and the plurality of synchronization sequences are associated with a plurality of cells, which facilitates the network device to determine the cell in which the first terminal device is located. For example, the synchronization sequence indicated by the first set can be used for synchronization between the first terminal device and the network device corresponding to the cell associated with the synchronization sequence. For example, the first set indicates a first synchronization sequence, and the first synchronization sequence is associated with a second cell in the plurality of cells, and the first synchronization sequence can be used for synchronization between the first terminal device and the network device (e.g., the second network device) corresponding to the second cell. Optionally, the association information between the plurality of synchronization sequences and the plurality of cells can be predefined or configured by the network device (e.g., the first network device), which is not limited herein.

[0376] In a possible implementation, each of the at least one synchronization sequence indicated by the first set can consist of one sequence. Optionally, the one sequence can be one W sequence or a group of W sequences, and the group of W sequences includes at least one sequence. The W sequence is described in the term introduction and will not be repeated herein. The synchronization sequence according to the embodiments of the present application consists of one sequence, which can occupy less network resource, reduce synchronization delay, and facilitate reduction of power consumption of the network device and the terminal device, compared with a synchronization signal block (SSB) consisting of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH).

[0377] Optionally, the synchronization sequence provided by the embodiments of the present application does not need to carry a cell identifier (cell ID).

[0378] Optionally, the synchronization signal generated based on the synchronization sequence provided by the embodiments of the present application can still be referred to as a PSS, or can be other names, such as a meta-synchronization signal, a dedicated synchronization signal, etc., which is not limited herein.

[0379] In a possible implementation, the at least one synchronization sequence indicated by the first set can be generated based on a W sequence. The W sequence is described in the foregoing description of the terms, and thus is not described herein again. For example, the first terminal device can determine, according to the W sequence, a synchronization sequence that supports transmission in the plurality of cells or the first area, and the synchronization sequence that supports transmission in the plurality of cells or the first area includes the at least one synchronization sequence indicated by the first set. Alternatively, the first terminal device can determine, according to a related parameter of the W sequence, a synchronization sequence that supports transmission in the plurality of cells or the first area. In this implementation, the at least one synchronization sequence indicated by the first set is generated based on the W sequence, and the W sequence has low ambiguity, so that the synchronization sequence generated based on the W sequence has good robustness. In addition, a large number of synchronization sequences can be generated based on the W sequence, which is beneficial to expansion of the synchronization sequence and improvement of the problem of insufficient sequence resources, thereby enabling more users to be served.

[0380] Alternatively, the related parameter of the W sequence used when the synchronization sequence is generated can refer to the description of the related parameter of the W sequence used when the paging sequence is generated, and thus is not described herein again. Alternatively, the related parameter of the W sequence used when the synchronization sequence is generated can be different from or partially different from the related parameter of the W sequence used when the paging sequence is generated, and thus is not limited. Alternatively, the related parameter of the W sequence used when the synchronization sequence is generated can be different from or partially different from the related parameter of the W sequence used when the SRS sequence is generated, and thus is not limited.

[0381] In a possible implementation, the highest order term of the W sequence used when the plurality of synchronization sequences is generated can be a quadratic term, as shown in equation (3); or the highest order term of the W sequence used when the plurality of synchronization sequences is generated can also be a cubic term, as shown in equation (4); or the highest order term of the W sequence used when the plurality of synchronization sequences is generated can also be a quartic term, as shown in equation (5), and thus is not limited. Alternatively, the highest order term of the W sequence used when the plurality of synchronization sequences is generated can be replaced by: the highest order term used when the plurality of synchronization sequences is generated based on the W sequence.

[0382] In a possible implementation, the highest order term used when the plurality of synchronization sequences is generated based on the W sequence can be different or the same. The correlation between the plurality of synchronization sequences generated by using the same highest order term is better than the correlation between the plurality of synchronization sequences generated by using different highest order terms, which is beneficial to obtaining better detection performance.

[0383] In a possible implementation, at least one non-highest order term of the multiple non-highest order terms used for generating the multiple synchronization sequences based on the W sequence can be different. Optionally, a non-highest order term used for generating the multiple synchronization sequences based on the W sequence is different, and / or a first order term used for generating the multiple synchronization sequences based on the W sequence is different. For example, a highest order term used for generating the multiple synchronization sequences based on the W sequence is the same, a non-highest order term used for generating the multiple synchronization sequences based on the W sequence is different, and a first order term used for generating the multiple synchronization sequences based on the W sequence is the same. For another example, a highest order term used for generating the multiple synchronization sequences based on the W sequence is the same, a non-highest order term used for generating the multiple synchronization sequences based on the W sequence is the same, and a first order term used for generating the multiple synchronization sequences based on the W sequence is different. For yet another example, a highest order term used for generating the multiple synchronization sequences based on the W sequence is the same, a non-highest order term used for generating the multiple synchronization sequences based on the W sequence is different, and a first order term used for generating the multiple synchronization sequences based on the W sequence is different. In this implementation, the non-highest order term used for generating the multiple synchronization sequences based on the W sequence is different, so that the first terminal device can detect the received synchronization sequence through a correlation position in the time domain or a frequency domain correlation peak position after IFFT, and the detection complexity can be reduced. The first order term used for generating the multiple synchronization sequences based on the W sequence is different, so that the first terminal device can detect the received synchronization sequence through a correlation position in the time domain or a time domain correlation peak position after IFFT, and the detection complexity can be reduced.

[0384] 4) Random access sequence

[0385] Exemplarily, the at least one sequence indicated by the first set can include at least one random access sequence, and the at least one random access sequence can be used to initiate random access. For example, the at least one random access sequence can be used for the first terminal device to initiate random access in the multiple cells or the first area. Optionally, the random access initiated by the at least one random access sequence can be non-contention random access. Optionally, the at least one random access sequence can also be used to obtain identity information (for example, UE ID) of the first terminal device. Optionally, the at least one random access sequence can also be used to determine a cell in which the first terminal device is located. Optionally, the at least one random access sequence can be used to carry a transmission scheduling request (scheduling request, SR) and / or carry a buffer status report (buffer status report, BSR).

[0386] In a possible implementation, the at least one random access sequence indicated by the first set can be generated based on a W sequence. The W sequence can refer to the content described in the term introduction and will not be described herein again. For example, the first terminal device can determine, according to the W sequence, a random access sequence that supports transmission in the plurality of cells or the first area, and the random access sequence that supports transmission in the plurality of cells or the first area includes the at least one random access sequence indicated by the first set. Alternatively, the first terminal device can determine, according to a related parameter of the W sequence, a random access sequence that supports transmission in the plurality of cells or the first area. In this implementation, the at least one random access sequence indicated by the first set is generated based on the W sequence, and the W sequence has low ambiguity, so that the random access sequence obtained based on the W sequence has better robustness. In addition, a larger number of random access sequences can be obtained based on the W sequence, which is beneficial to expansion of sequence resources and can improve the problem of insufficient sequence resources and provide services for more users.

[0387] Alternatively, the related parameter of the W sequence used when generating the random access sequence can refer to the description of the related parameter of the W sequence used when generating the paging sequence, which will not be described herein again. Alternatively, the related parameter of the W sequence used when generating the random access sequence can be different from or partially different from the related parameter of the W sequence used when generating the paging sequence, which will not be limited. Alternatively, the related parameter of the W sequence used when generating the random access sequence can be different from or partially different from the related parameter of the W sequence used when generating the SRS sequence, which will not be limited. Alternatively, the related parameter of the W sequence used when generating the random access sequence can be different from or partially different from the related parameter of the W sequence used when generating the synchronization sequence, which will not be limited.

[0388] In a possible implementation, the highest order term of the W sequence used when generating the plurality of random access sequences can be a quadratic term, as shown in formula (3). Alternatively, the highest order term of the W sequence used when generating the plurality of random access sequences can also be a cubic term, as shown in formula (4). Alternatively, the highest order term of the W sequence used when generating the plurality of random access sequences can also be a quartic term, as shown in formula (5), which will not be limited. Alternatively, the highest order term of the W sequence used when generating the plurality of random access sequences can be replaced by: the highest order term used when generating the plurality of random access sequences based on the W sequence.

[0389] In a possible implementation, the highest order term used when generating the plurality of random access sequences based on the W sequence can be different or the same. The correlation between the plurality of random access sequences generated by using the same highest order term is better than the correlation between the plurality of random access sequences generated by using different highest order terms, which is beneficial to obtaining better detection performance.

[0390] In a possible implementation, at least one term other than the highest order term used in generating the plurality of random access sequences based on the W sequence can be different. Optionally, the second highest order term used in generating the plurality of random access sequences based on the W sequence is different, and / or the first order term used in generating the plurality of random access sequences based on the W sequence is different. For example, the highest order term used in generating the plurality of random access sequences based on the W sequence is the same, the second highest order term used in generating the plurality of random access sequences based on the W sequence is different, and the first order term used in generating the plurality of random access sequences based on the W sequence is the same. For another example, the highest order term used in generating the plurality of random access sequences based on the W sequence is the same, the second highest order term used in generating the plurality of random access sequences based on the W sequence is the same, and the first order term used in generating the plurality of random access sequences based on the W sequence is different. For yet another example, the highest order term used in generating the plurality of random access sequences based on the W sequence is the same, the second highest order term used in generating the plurality of random access sequences based on the W sequence is different, and the first order term used in generating the plurality of random access sequences based on the W sequence is different. In this implementation, the second highest order term used in generating the plurality of random access sequences based on the W sequence is different, so that the receiving end can detect the received random access sequence through the correlation position in the time domain or the frequency domain correlation peak position after IFFT, and the detection complexity can be reduced. The first order term used in generating the plurality of random access sequences based on the W sequence is different, so that the receiving end can detect the received random access sequence through the correlation position in the time domain or the time domain correlation peak position after IFFT, and the detection complexity can be reduced.

[0391] 5) Sequence for generating WUS

[0392] Exemplarily, the at least one sequence indicated by the first set can include at least one sequence for generating a WUS. The at least one sequence for generating a WUS can be used to wake up the first terminal device. For example, the at least one sequence for generating a WUS can be used to wake up the first terminal device in a plurality of cells or a first area. For example, the at least one sequence for generating a WUS can be used to wake up the first terminal device to monitor a physical downlink control channel (PDCCH) in a plurality of cells or a first area.

[0393] In a possible implementation, the at least one sequence for generating the WUS indicated by the first set can be generated based on a W sequence. For details of the W sequence, refer to the description in the term introduction, which will not be repeated here. For example, the first terminal device can determine, according to the W sequence, a sequence for generating the WUS that supports transmission in the plurality of cells or the first area, and the at least one sequence for generating the WUS that supports transmission in the plurality of cells or the first area includes the at least one sequence for generating the WUS indicated by the first set. Alternatively, the first terminal device can determine, according to a related parameter of the W sequence, a random access sequence that supports transmission in the plurality of cells or the first area. In this implementation, the at least one sequence for generating the WUS indicated by the first set is generated based on the W sequence, and the W sequence has low ambiguity, so that the sequence for generating the WUS obtained based on the W sequence has good robustness. In addition, a larger number of sequences for generating the WUS can be obtained based on the W sequence, which is beneficial to expansion of sequence resources and can improve the problem of insufficient sequence resources and provide services for more users.

[0394] Alternatively, the related parameter of the W sequence used by the sequence for generating the WUS can refer to the description of the related parameter of the W sequence used when generating the paging sequence, which will not be repeated here.

[0395] In a possible implementation, the highest order term of the W sequence used when generating the plurality of sequences for generating the WUS can be a quadratic term, as shown in formula (3); or the highest order term of the W sequence used when generating the plurality of sequences for generating the WUS can also be a cubic term, as shown in formula (4); or the highest order term of the W sequence used when generating the plurality of sequences for generating the WUS can also be a quartic term, as shown in formula (5), which is not limited. Alternatively, the highest order term of the W sequence used when generating the plurality of sequences for generating the WUS can be replaced by: the highest order term used when generating the plurality of sequences for generating the WUS based on the W sequence.

[0396] In a possible implementation, the highest order term used when generating the plurality of sequences for generating the WUS based on the W sequence can be different or the same. The correlation between the plurality of sequences for generating the WUS generated by using the same highest order term is better than the correlation between the plurality of sequences for generating the WUS generated by using different highest order terms, which is beneficial to obtaining better detection performance.

[0397] In a possible implementation, at least one of the multiple terms other than the highest order term used when generating the multiple sequences for generating the WUS based on the W sequence can be different. Optionally, the second highest order term used when generating the multiple sequences for generating the WUS based on the W sequence is different, and / or the first order term used when generating the multiple sequences for generating the WUS based on the W sequence is different. For details, refer to the descriptions of the paging sequence, the SRS sequence, the synchronization sequence, or the random access sequence.

[0398] In a possible implementation, the sequence for generating the WUS is generated based on a W sequence, the highest order term of the W sequence is greater than the first order term, that is, d is greater than 1, and then the information carried (or indicated) by different terms (or different term coefficients) of the W sequence can be different.

[0399] 6) Sequence for generating a HARQ signal

[0400] For example, the at least one sequence indicated by the first set can include at least one sequence for generating a HARQ signal. For example, the HARQ signal is used to carry an acknowledgment (ACK) or is used to carry a negative acknowledgment (NACK).

[0401] In a possible implementation, the at least one sequence for generating a HARQ signal indicated by the first set can be generated based on a W sequence. For details, refer to the description of the W sequence. For example, the first terminal device can determine, according to the W sequence, a sequence for generating a HARQ signal that supports transmission in multiple cells or a first area, and the at least one sequence for generating a HARQ signal that supports transmission in multiple cells or the first area includes the at least one sequence for generating a HARQ signal indicated by the first set. Optionally, the first terminal device can determine, according to a related parameter of the W sequence, a random access sequence that supports transmission in multiple cells or the first area. In this implementation, the at least one sequence for generating a HARQ signal indicated by the first set is generated based on a W sequence, the W sequence has low ambiguity, so that the sequence for generating a HARQ signal obtained based on the W sequence has good robustness. In addition, a larger number of sequences for generating a HARQ signal can be obtained based on the W sequence, which is beneficial to expansion of sequence resources and can improve the problem of insufficient sequence resources and provide services for more users.

[0402] Optionally, the related parameter of the W sequence used for generating the sequence for generating a HARQ signal can refer to the description of the related parameter of the W sequence used when generating the paging sequence, and details are not repeated here.

[0403] In a possible implementation, the highest order term of the W sequence used when generating the plurality of sequences for generating the HARQ signal can be a quadratic term, as shown in equation (3); or the highest order term of the W sequence used when generating the plurality of sequences for generating the HARQ signal can also be a cubic term, as shown in equation (4); or the highest order term of the W sequence used when generating the plurality of sequences for generating the HARQ signal can also be a quartic term, as shown in equation (5), which is not limited. Alternatively, the highest order term of the W sequence used when generating the plurality of sequences for generating the HARQ signal can be replaced by: the highest order term used when generating the plurality of sequences for generating the HARQ signal based on the W sequence.

[0404] In a possible implementation, the highest order term used when generating the plurality of sequences for generating the HARQ signal based on the W sequence can be different, or can also be the same. The correlation between the plurality of sequences for generating the HARQ signal generated using the same highest order term is better than the correlation between the plurality of sequences for generating the HARQ signal generated using different highest order terms, which is beneficial to obtain better detection performance.

[0405] In a possible implementation, at least one order term of the W sequence used when generating the plurality of sequences for generating the HARQ signal based on the W sequence can be different from the highest order term. Alternatively, the second highest order term used when generating the plurality of sequences for generating the HARQ signal based on the W sequence is different, and / or the first order term used when generating the plurality of sequences for generating the HARQ signal based on the W sequence is different, for details, refer to the foregoing description of the paging sequence, the SRS sequence, the synchronization sequence, or the random access sequence, which is not repeated here.

[0406] In a possible implementation process, the sequence for generating the HARQ signal is generated based on the W sequence, the highest order term of the W sequence is greater than the first order term, that is, d is greater than 1, and then the information carried (or indicated) by different order terms (or different order term coefficients) of the W sequence can be different.

[0407] 7) Sequence for generating data

[0408] For example, the first set indicates at least one sequence, which can include at least one sequence for generating data. Alternatively, the data can be small packet data. For example, the amount of data generated based on the sequence is less than or equal to a set threshold.

[0409] In a possible implementation, the at least one sequence for generating data indicated by the first set can be generated based on a W sequence. The W sequence is described in the description of the terms, and thus is not described herein again. For example, the first terminal device can determine, according to the W sequence, a sequence for generating data that supports transmission in the plurality of cells or the first area, and the at least one sequence for generating data that supports transmission in the plurality of cells or the first area includes the at least one sequence for generating data indicated by the first set. Alternatively, the first terminal device can determine, according to a related parameter of the W sequence, a random access sequence that supports transmission in the plurality of cells or the first area. In this implementation, the at least one sequence for generating data indicated by the first set is generated based on the W sequence, and the W sequence has low ambiguity, so that the sequence for generating data obtained based on the W sequence has good robustness. In addition, a larger number of sequences for generating data can be obtained based on the W sequence, which is beneficial to expansion of sequence resources and can improve the problem of insufficient sequence resources and provide services for more users.

[0410] Alternatively, the related parameter of the W sequence used by the sequence for generating data can refer to the description of the related parameter of the W sequence used when the paging sequence is generated, and thus is not described herein again.

[0411] In a possible implementation, the highest order term of the W sequence used when the plurality of sequences for generating data are generated can be a quadratic term, as shown in equation (3); or the highest order term of the W sequence used when the plurality of sequences for generating data are generated can also be a cubic term, as shown in equation (4); or the highest order term of the W sequence used when the plurality of sequences for generating data are generated can also be a quartic term, as shown in equation (5), which is not limited. Alternatively, the highest order term of the W sequence used when the plurality of sequences for generating data are generated can be replaced by: the highest order term used when the plurality of sequences for generating data are generated based on the W sequence.

[0412] In a possible implementation, the highest order term used when the plurality of sequences for generating data are generated based on the W sequence can be different or can be the same. The correlation between the plurality of sequences for generating data generated by using the same highest order term is better than the correlation between the plurality of sequences for generating data generated by using different highest order terms, which is beneficial to obtaining better detection performance.

[0413] In a possible implementation, at least one non-highest order term used when generating the plurality of sequences for generating data based on the W sequence can be different. Optionally, the next-highest order term used when generating the plurality of sequences for generating data based on the W sequence is different, and / or the first order term used when generating the plurality of sequences for generating data based on the W sequence is different. For details, refer to the foregoing descriptions of the paging sequence, the SRS sequence, the synchronization sequence, or the random access sequence.

[0414] In a possible implementation, the sequence for generating data is generated based on a W sequence, the highest order term of the W sequence is greater than the first order term, that is, d is greater than 1, and then the information carried (or indicated) by different order terms (or different order term coefficients) of the W sequence can be different.

[0415] In a possible implementation, transmitting the sequence for generating data can be understood as: the sequence generates data for transmission. For example, the W sequence carries data for transmission. Optionally, the W sequence carrying data for transmission can be implemented in any of the following manners.

[0416] Manner 1: After the code word is segmented, the plurality of W sequences are used to carry data on the same time-frequency resource, each segment of the code word corresponds to one sequence, the multi-stream sequence is transmitted through multi-input multi-output (MIMO) concurrency, and the sequences are quasi-orthogonal. In this manner 1, the sequence capacity is high, the frequency band utilization rate is high, the transmit power of a single sequence is low, and the interference between the sequences is small.

[0417] Manner 2: After the code word is segmented, the plurality of W sequences are used to carry data on different time-frequency resources, and the sequences are orthogonal through time-frequency resources. In this manner 2, the sequence capacity is low, the frequency band utilization rate is low, the transmit power of a single sequence is low, and there is no interference between the sequences.

[0418] Manner 3: The code word uses one sequence to carry data, different states of the sequence carry bit information, and the different states of the sequence are quasi-orthogonal. In this manner 3, the sequence capacity requirement is extremely high, the frequency band utilization rate is high, the transmit power of the sequence is high, and there is interference between the sequences.

[0419] Optionally, the first set can be configured by the first network device, or can be predefined and is not limited.

[0420] 3. The first resource can be used to carry the sequence of the first set indication. For example, the first resource can be used to carry the sequence of the first set indication in the plurality of cells or the first area. Illustratively, the first resource belongs to the aforementioned meta BWP. For example, the first resource can be understood as a physical resource configured by the first network device for the first terminal device to transmit the sequence resource in the plurality of cells or the first area. Optionally, the first resource can be consistent in the plurality of cells or the first area; or the first resource can be the same (or configured to be the same) in the plurality of cells or the first area; or the first resource can be invariant (or configured to be invariant) in the plurality of cells or the first area; or the first resource does not need to be reconfigured in the plurality of cells or the first area; or the first resource is shared by the plurality of cells or the first area. For example, the first resource can be configured for at least one terminal device to use, and the at least one terminal device can communicate with the network device corresponding to the plurality of cells through the first resource. Optionally, the first resource is a meta BWP, or the first resource is part of a meta BWP.

[0421] Illustratively, the frequency domain resources occupied by the first resource on different time units can be the same, or the frequency domain resources occupied by the first resource on different time units can also be different; the first resource can be continuous in the frequency domain, or the first resource can also be discontinuous in the frequency domain; the first resource can be continuous in the time domain, or the first resource can also be discontinuous in the time domain, please refer to the description of the meta BWP, which will not be repeated.

[0422] Optionally, assuming that the sequence of the first set indication includes the first paging sequence and the second paging sequence, the resource carrying the first paging sequence and the resource carrying the second paging sequence can be the same, or the resource carrying the first paging sequence and the resource carrying the second paging sequence can also be different, as shown in FIG. 7. The rest of the sequence is similar and will not be listed one by one.

[0423] Optionally, the first resource can be configured by the first network device, or it can also be predefined and not limited.

[0424] Optionally, the first message can further comprise other information. For example, the sequence indicated by the first set indication comprises at least one random access sequence, the first message can further comprise information for indicating a first sub-resource, the first sub-resource is used for carrying the at least one random access sequence indicated by the first set indication, and the first sub-resource belongs to the first resource. For another example, the sequence indicated by the first set indication comprises at least one paging sequence, the first message can further comprise information for indicating a second sub-resource, the second sub-resource is used for carrying the at least one paging sequence indicated by the first set indication, and the second sub-resource belongs to the first resource. For yet another example, the sequence indicated by the first set indication comprises at least one synchronization sequence, the first message can further comprise information for indicating a third sub-resource, the third sub-resource is used for carrying the at least one synchronization sequence indicated by the first set indication, and the third sub-resource belongs to the first resource.

[0425] In a possible implementation, the first network device can send a second message; correspondingly, the first terminal device can receive the second message. The second message can be used for indicating whether the first network device supports the first transmission mode, and / or the second message can be used for indicating whether the first network device supports the first access mode. Optionally, the second message can be carried by the MIB, or the second message can also be carried by the SIB, or can also be carried by high layer signaling, which is not limited. For example, the first network device can send the second message before sending the first message. In an example, the second message indicates that the first network device does not support the first transmission mode, and the first terminal device can determine not to use the first transmission mode. For example, the second message indicates that the first network device does not support the first transmission mode, and the first terminal device can determine to use the second transmission mode. In another example, the second message indicates that the first network device supports the first transmission mode, and the first terminal device can determine to use the first transmission mode. In yet another example, the second message indicates that the first network device does not support the first access mode, and the first terminal device can determine not to use (or adopt) the first access mode. For example, the second message indicates that the first network device does not support the first access mode, and the first terminal device can determine to use (or adopt) the second access mode. In yet another example, the second message indicates that the first network device supports the first access mode, and the first terminal device can determine to use (or adopt) the first access mode. The embodiments of the present application are described by taking the second message indicating that the first network device supports the first transmission mode and / or supports the first access mode as an example.

[0426] Optionally, using the second transmission mode can be replaced by accessing (or requesting to access, or entering, or cutting in, or requesting to cut in, etc.) the second transmission mode. Optionally, using the first transmission mode can be replaced by accessing (or requesting to access, or entering, or cutting in, or requesting to cut in, etc.) the first transmission mode.

[0427] In a possible implementation, the first network device can send a fifth message; correspondingly, the first terminal device receives the fifth message, which can include at least one of the following: the identifier of the M network devices, the identifier of the plurality of cells, the information of the first area, the information indicating whether the first transmission mode is allowed to be used, or the information indicating whether the first access mode is allowed to be used. Optionally, the fifth message can be carried by the SIB, or can be carried by the MIB, or can be carried by the high-layer signaling, which is not limited. For example, the first network device can send the fifth message before sending the first message. In an example, the first network device supports using the first transmission mode, the fifth message includes the information indicating that the first transmission mode is not allowed to be used, and the first terminal device can determine not to use the first transmission mode. For example, the first network device supports using the first transmission mode, the fifth message includes the information indicating that the first transmission mode is not allowed to be used, and the first terminal device can determine to use the second transmission mode. In another example, the first network device supports using the first transmission mode, the fifth message includes the information indicating that the first transmission mode is allowed to be used, and the first terminal device can determine to use the first transmission mode. In another example, the first network device supports using the first access mode, the fifth message includes the information indicating that the first access mode is not allowed to be used, and the first terminal device can determine not to use the first access mode. For example, the first network device supports using the first access mode, the fifth message includes the information indicating that the first access mode is not allowed to be used, and the first terminal device can determine to use the second access mode. In another example, the first network device supports using the first access mode, the fifth message includes the information indicating that the first access mode is allowed to be used, and the first terminal device can determine to use the first access mode.

[0428] In a possible implementation, the first terminal device can send a third message to the first network device; correspondingly, the first network device can receive the third message from the first terminal device. The third message can be used to indicate that the first terminal device uses the first transmission mode, and / or the third message can be used to indicate that the first terminal device uses the first access mode; or the third message can be used to indicate that the first terminal device does not use the first transmission mode, and / or the third message can be used to indicate that the first terminal device does not use the first access mode. For example, the first network device supports using the first transmission mode and / or supports using the first access mode, and the first terminal device can send the third message to the first network device. For example, the first terminal device can send the third message to the first network device before receiving the first message. The description of using the first transmission mode is referred to the foregoing related content, which will not be repeated. For ease of understanding, in the absence of special description, the third message is used to indicate that the first terminal device uses the first transmission mode and / or uses the first access mode in the following description.

[0429] Optionally, the third message is used to instruct the first terminal device to use the second transmission mode, instead of not using the first transmission mode. Optionally, the third message is used to instruct the first terminal device to use the second access mode, instead of not using the first access mode. The description of the second transmission mode can refer to the foregoing related content, and will not be repeated here.

[0430] Optionally, the third message can be used to request to obtain the configuration information of the first transmission mode. The configuration information of the first transmission mode can include at least one of the following: the first identifier, the first set, or the first resource. For example, the first terminal device sends the third message to the first network device; the first network device receives the third message and sends the first message to the first terminal device according to the third message; correspondingly, the first terminal device receives the first message from the first network device.

[0431] Optionally, the third message can be carried by RRC signaling, or the third message can be a random access message (or a random access request message), or the third message can be a message 3 (Msg3), without limitation. Optionally, the third message being a random access message can be replaced by: the third message being a physical random access channel (PRACH); or can also be replaced by: the third message being carried by the PRACH.

[0432] In a possible implementation, after completing initial access or establishing an RRC connection between the first terminal device and the first network device, the first terminal device can send the third message to the first network device. The third message is carried by RRC signaling, and the third message is used to instruct the first terminal device to use the first transmission mode, or the third message is used to request to obtain the configuration information of the first transmission mode. Correspondingly, the first network device can receive the third message from the first terminal device and send the first message to the first terminal device. For example, the first network device can send the first message to the first terminal device according to the third message. In this implementation, the first terminal device sends the third message to the first network device after completing initial access or establishing an RRC connection, without the need to change the initial access process, and is easy to implement.

[0433] In another possible implementation, during the initial access process, the first terminal device can send the third message to the first network device; correspondingly, the first network device receives the third message from the first terminal device. The third message can be a random access message or a Msg3. The third message is used to instruct the first terminal device to use the first transmission mode (or the first access mode), or to instruct the first terminal device not to use the first transmission mode (or the first access mode).

[0434] Exemplarily, the first network device can determine whether to send the first message according to the third message; or the first network device can determine whether to send the configuration information of the first transmission mode or the configuration information of the second transmission mode according to the third message. Wherein, determining to send the configuration information of the first transmission mode can be replaced by: determining to send the first message. For example, the third message indicates that the first terminal device uses the first transmission mode (or the first access mode), and the first network device can determine to send the configuration information of the first transmission mode, i.e., to determine to send the first message. For another example, the third message indicates that the first terminal device does not use the first transmission mode (or the first access mode), and the first network device can determine not to send the configuration information of the first transmission mode, i.e., to determine not to send the first message. For another example, the third message indicates that the first terminal device uses the second transmission mode (or the second access mode), and the first network device can determine to send the configuration information of the second transmission mode. It can be understood that the implementation process of the configuration information of the second transmission mode is not limited in the embodiments of the present application.

[0435] In an implementation manner, the third message is a random access message, and the first network device can determine whether to send the first message according to a resource occupied by the third message and / or a sequence used for generating the third message. Optionally, the first message can be a random access response message.

[0436] In an example, the third message can be carried by the second resource, and the third message is used for indicating that the first terminal device uses the first transmission mode and / or indicating that the first terminal device uses the first access mode; or the third message can be carried by the third resource, and the third message is used for indicating that the first terminal device does not use the first transmission mode and / or indicating that the first terminal device does not use the first access mode. Correspondingly, the third message is carried by the second resource, and the first network device can determine to send the first message; or the third message is carried by the third resource, and the first network device can determine not to send the first message.

[0437] Optionally, the third message carried by the third resource is used for indicating that the first terminal device does not use the first transmission mode, which can be replaced by: the third message carried by the third resource is used for indicating that the first terminal device uses the second transmission mode. Optionally, the third message carried by the third resource is used for indicating that the first terminal device does not use the first access mode, which can be replaced by: the third message carried by the third resource is used for indicating that the first terminal device uses the second access mode. Correspondingly, the third message carried by the third resource, and the first network device can determine to send the configuration information of the second transmission mode.

[0438] The second resource is different from the third resource. The second resource can include a time domain resource and / or a frequency domain resource, without limitation. The third resource can include a time domain resource and / or a frequency domain resource, without limitation. Optionally, the second resource can be predefined or configured by a network device (for example, the first network device), without limitation. For example, the second resource can be carried by an SIB, or can be carried by an MIB, or can be carried by high-layer signaling, without limitation. Optionally, the third resource can be predefined or configured by a network device (for example, the first network device), without limitation. For example, the third resource can be carried by an SIB, or can be carried by an MIB, or can be carried by high-layer signaling, without limitation.

[0439] In another example, the third message is generated based on the second sequence, and the third message is used to instruct the first terminal device to use the first transmission mode and / or to use the first access mode. Alternatively, the third message is generated based on the third sequence, and the third message is used to instruct the first terminal device not to use the first transmission mode and / or not to use the first access mode. Accordingly, when the third message is generated based on the second sequence, the first network device can determine to send the first message; or when the third message is generated based on the third sequence, the first network device can determine not to send the first message.

[0440] Alternatively, the third message is generated based on the third sequence, and the third message is used to instruct the first terminal device to use the second transmission mode. Alternatively, the third message is generated based on the third sequence, and the third message is used to instruct the first terminal device to use the second access mode.

[0441] The second sequence is different from the third sequence. Optionally, the second sequence can be predefined or configured by a network device (for example, the first network device), without limitation. For example, the second sequence can be carried by an SIB, or can be carried by an MIB, or can be carried by high-layer signaling, without limitation. Optionally, the third sequence can be predefined or configured by a network device (for example, the first network device), without limitation. For example, the third sequence can be carried by an SIB, or can be carried by an MIB, or can be carried by high-layer signaling, without limitation.

[0442] In another implementation, the third message is Msg3, and the first network device can determine whether to send the first message according to a resource occupied by the third message and / or scrambling information of the third message. For details of the implementation process in which the first network device determines whether to send the first message according to the resource occupied by the third message, refer to the foregoing content, and details are not repeated here.

[0443] In an example, the third message can be scrambled based on the first information, and the third message is used to indicate the first terminal device to use the first transmission mode and / or to use the first access mode. For example, the third message is Msg3, a cyclic redundancy check (CRC) of the Msg3 is scrambled by the first information, or an information part of the Msg3 is scrambled by the first information, and the Msg3 can be used to indicate the first terminal device to use the first transmission mode and / or to use the first access mode. Alternatively, the third message can be scrambled based on the second information, and the third message is used to indicate the first terminal device not to use the first transmission mode and / or not to use the first access mode. For example, the third message is Msg3, a CRC of the Msg3 is scrambled by the second information, or an information part of the Msg3 is scrambled by the second information, and the Msg3 can be used to indicate the first terminal device not to use the first transmission mode and / or not to use the first access mode. Accordingly, when the third message is scrambled based on the first information, the first network device can determine to send the first message; or when the third message is scrambled based on the second information, the first network device can determine not to send the first message.

[0444] Alternatively, the third message is scrambled based on the first information, and the third message is used to indicate the first terminal device not to use the first transmission mode, which can be replaced by: the third message is scrambled based on the first information, and the third message is used to indicate the first terminal device to use the second transmission mode. Alternatively, the third message is scrambled based on the second information, and the third message is used to indicate the first terminal device not to use the first access mode, which can be replaced by: the third message is scrambled based on the second information, and the third message is used to indicate the first terminal device to use the second access mode.

[0445] The first information and the second information are different. For example, the first information and the second information can be different RNTIs, without limitation. Alternatively, the first information can be predefined or configured by a network device (for example, the first network device), without limitation. For example, the first information can be carried by an SIB, or can be carried by an MIB, or can be carried by high-layer signaling, without limitation. Alternatively, the second information can be predefined or configured by a network device (for example, the first network device), without limitation. For example, the second information can be carried by an SIB, or can be carried by an MIB, or can be carried by high-layer signaling, without limitation.

[0446] In the foregoing implementation manner, the first terminal device sends the third message to the first network device in the initial access process, multiplexes the random access message or Msg3 in the initial access process, so that the first network device configures the first transmission mode for the first terminal device, signaling interaction can be reduced, and thus consumption of transmission resources can be reduced.

[0447] In a possible implementation manner, the first network device can send a fourth message to the first terminal device; correspondingly, the first terminal device can receive the fourth message from the first network device. For example, the first network device can send the fourth message to the first terminal device before receiving the third message. The fourth message can include information related to the first access mode. For example, the fourth message can include at least one of the second resource, the second sequence, or the first information. Optionally, the fourth message can further include information related to the second access mode. For example, the fourth message can further include at least one of the third resource, the third sequence, or the second information. Optionally, the fourth message can be carried by the SIB, or can be carried by the MIB, or can be carried by high-layer signaling, which is not limited herein.

[0448] In the foregoing first communication method, the first resource can be used to carry multiple types of sequences, which can simplify resource configuration procedures and facilitate improvement of communication performance.

[0449] Further, the sequence indicated by the first set is carried by the first resource in multiple cells, and the first terminal device is identified by the first identifier in the multiple cells. In this way, the first terminal device communicates with network devices corresponding to the multiple cells by using the first resource, the first identifier, and the sequence indicated by the first set when moving in the multiple cells, without the need to frequently perform synchronization, measurement, configuration, and the like, so that mobility management and update can be simplified, power consumption of the terminal device and the network device can be reduced, and communication performance and user experience can be improved.

[0450] The following describes various implementation manners of the third message in combination with FIG. 8. FIG. 8 is a flowchart of a second communication method provided by an embodiment of the present application. As shown in FIG. 8, the method can include the following contents.

[0451] S801: The first network device sends an SIB.

[0452] Correspondingly, the first terminal device receives the SIB.

[0453] The SIB can include information indicating whether the first network device supports the first transmission mode, and / or information indicating whether the first network device supports the first access mode, and the implementation process can refer to the description of the second message, which will not be repeated. In FIG. 8, the SIB is taken as an example to illustrate that the first network device supports the first transmission mode.

[0454] Optionally, the SIB can further include at least one of the following: the identification of the M network devices, the identification of the plurality of cells, the information of the first area, information indicating whether the first transmission mode is allowed to be used, or information indicating whether the first access mode is allowed to be used, and the implementation process can refer to the description of the fifth message, which will not be repeated. In the embodiments of the present application, the first transmission mode and the first access mode are taken as examples.

[0455] Optionally, the SIB can further include the related information of the first access mode, or the SIB can further include the related information of the first access mode and the related information of the second access mode, and the implementation process can refer to the description of the fourth message. For example, the related information of the first access mode can include at least one of the following: the second sequence, the second resource, or the first information. For example, the related information of the second access mode can include at least one of the following: the third sequence, the third resource, or the second information.

[0456] For example, the SIB in S801 can be replaced by the MIB; or the above information can be carried by the SIB and the MIB. For example, part of the above information is carried by the MIB, and the remaining information is carried by the SIB, which is not limited. In FIG. 8, the SIB is taken as an example.

[0457] Next, any one of S802 to S804, S805 to S807, or S808 to S812 can be performed. For example, the third message is carried by the RRC signaling, S802 to S804 are performed, which is recorded as mode one; or the third message is the random access message 1, S805 to S807 are performed, which is recorded as mode two; or the third message is Msg3, S808 to S812 are performed, which is recorded as mode three. In other words, S802 to S804, S805 to S807, and S808 to S812 are three parallel modes, which are represented by a dashed box in FIG. 8.

[0458] S802: An RRC connection is established between the first terminal device and the first network device.

[0459] S802 can also be described as: the first terminal device completes the initial access. It can be understood that the implementation mode of the initial access process and the establishment process of the RRC connection of the first terminal device is not limited in the embodiments of the present application.

[0460] S803: The first terminal device sends RRC signaling to the first network device.

[0461] Correspondingly, the first network device receives the RRC signaling from the first terminal device.

[0462] The RRC signaling can be used to instruct the first terminal device to use the first transmission mode, and / or the RRC signaling can be used to request to obtain configuration information of the first transmission mode. The first terminal device is instructed to use the first transmission mode by the RRC signaling in FIG. 8 as an example.

[0463] S804: The first network device sends the first message to the first terminal device.

[0464] Correspondingly, the first terminal device receives the first message from the first network device.

[0465] The first message includes at least one of the first identifier, the first set, or the first resource, and the implementation manners can refer to the foregoing content and will not be described herein. For example, the first network device can send the first message to the first terminal device according to the RRC signaling after receiving the RRC signaling.

[0466] S805: The first terminal device sends random access message 1 to the first network device. Correspondingly, the first network device receives the random access message 1 from the first terminal device.

[0467] The random access message 1 can be used to instruct the first terminal device to use the first transmission mode, and / or the random access message 1 can be used to instruct the first terminal device to use the first access mode, and the implementation process can refer to the description of the third message as the random access message and will not be described herein. The first terminal device is instructed to use the first transmission mode by the random access message 1 in FIG. 8 as an example.

[0468] S806: The first network device determines to send the first message according to the random access message 1.

[0469] S806 is an optional step and is identified by a dashed line in FIG. 8. For example, the first network device can determine whether to send the first message according to resources occupied by the random access message 1 and / or a sequence of the random access message 1, and the implementation process can refer to the foregoing content and will not be described herein. The first network device determines to send the first message according to the random access message 1 in FIG. 8 as an example.

[0470] S807: The first network device sends the first message to the first terminal device.

[0471] Correspondingly, the first terminal device receives the first message from the first network device.

[0472] Optionally, the first message in S807 can be a random access response message 1, which is not limited. The first message can refer to the foregoing description, which is not described again.

[0473] S808: The first terminal device sends a random access message 2 to the first network device.

[0474] Correspondingly, the first network device receives the random access message 2 from the first terminal device.

[0475] S809: The first network device sends a random access response message 2 to the first network device. Correspondingly, the first terminal device receives the random access response message 2 from the first network device.

[0476] S810: The first terminal device sends Msg3 to the first network device.

[0477] Correspondingly, the first network device receives Msg3 from the first terminal device.

[0478] The Msg3 can be used to indicate whether the first terminal device uses the first transmission mode, and / or the Msg3 can be used to indicate whether the first terminal device uses the first access mode. For implementation process, refer to the foregoing description of the third message being Msg3, which is not described again. In FIG. 8, it is exemplified that the Msg3 indicates that the first terminal device uses the first transmission mode.

[0479] S811: The first network device determines to send the first message according to the Msg3.

[0480] S811 is an optional step, which is identified by a dashed line in FIG. 8. Exemplarily, the first network device can determine whether to send the first message according to the resource occupied by the Msg3 and / or the scrambling information of the Msg3. For implementation process, refer to the foregoing content, which is not described again. In FIG. 8, it is exemplified that the first network device determines to send the first message according to the Msg3.

[0481] S812: The first network device sends the first message to the first terminal device.

[0482] Correspondingly, the first terminal device receives the first message from the first network device.

[0483] The first message can refer to the foregoing description, which is not described again.

[0484] It can be understood that in FIG. 8, the first transmission mode is exemplified by using the first mode, the second mode and the third mode independently, which is not limited in the embodiments of the application. Exemplarily, the first mode, the second mode and the third mode can also be used in combination. For example, part of the configuration information of the first transmission mode is configured to the terminal device by the second mode, and the remaining configuration information is configured to the terminal device by the first mode.

[0485] In the second communication method, the first terminal device can obtain the configuration information of the first transmission mode after the initial access is completed or the RRC connection is established, without changing the initial access process, and is easy to implement. Alternatively, the first terminal device can obtain the configuration information of the first transmission mode by multiplexing the random access message or Msg3 in the initial access process, which can reduce signaling interaction, improve communication performance, and improve user experience.

[0486] In S602, the first terminal device communicates with the network devices corresponding to the plurality of cells according to the first message. The implementation process of S602 is described below in combination with FIG. 9.

[0487] FIG. 9 is a flowchart of a third communication method provided by an embodiment of the present application. As shown in FIG. 9, the method can include the following steps.

[0488] S901: The first network device sends a first message. For example, the first network device can send the first message to the first terminal device.

[0489] Correspondingly, the first terminal device receives the first message. For example, the first terminal device can receive the first message from the first network device.

[0490] S901 is an optional step, which is represented by a dashed line in FIG. 9. The first message can include at least one of the following: a first identifier, a first set, or a first resource. The first identifier, the first set, and the first resource are described below. For details, refer to the content of S601, which will not be repeated here.

[0491] S902: The first terminal device determines a first sequence.

[0492] S902 is an optional step, which is represented by a dashed line in FIG. 9. For example, the first terminal device can determine the first sequence according to the first set.

[0493] The first sequence can be any of the following: a paging sequence, a reference signal sequence, a synchronization sequence, a random access sequence, a sequence for generating a WUS, a sequence for generating a HARQ signal, or a sequence for generating data. The reference signal sequence is described in the terminology section and will not be repeated here. Alternatively, the first sequence can be generated based on a W sequence, which is described in the aforementioned terminology section and will not be repeated here.

[0494] As mentioned above, the first set can be predefined or configured by the first network device. The first resource can be predefined or configured by the first network device. In a possible implementation, at least one of the first set or the first resource can be associated with the first identity. For example, the first terminal device can determine the first set and / or the first resource according to the first identity. For example, the first terminal device can determine the first sequence according to the first identity, and / or determine the resource for carrying the first sequence according to the first identity, the resource for carrying the first sequence belonging to the first resource. Details are described below.

[0495] 1. The first set is associated with the first identity

[0496] The first set being associated with the first identity can be understood as that the identity of at least one sequence indicated by the first set is determined by the first identity. Accordingly, the first terminal device can determine the first set according to the first identity. Optionally, the identity of part or all of the at least one sequence indicated by the first set can be determined by the first identity.

[0497] In a possible implementation, the identity of at least one paging sequence indicated by the first set can be determined by the first identity. Accordingly, the first terminal device can determine the identity of the at least one paging sequence indicated by the first set according to the first identity. Optionally, the at least one paging sequence indicated by the first set can be replaced by at least one paging sequence included in at least one group of paging sequences indicated by the first set. Hereinafter, the at least one paging sequence indicated by the first set is taken as an example for description.

[0498] In an embodiment, the identity of the at least one paging sequence indicated by the first set can be determined by the first identity and third information. Accordingly, the first terminal device can determine the identity of the at least one paging sequence indicated by the first set according to the first identity and the third information. The third information can include the number of the at least one paging sequence indicated by the first set, or include the first number, or include the number of the at least one paging sequence indicated by the first set and the first number.

[0499] The first number can be understood as the number of paging sequences that support transmission in the plurality of cells or the first area; or can also be understood as the total number of paging sequences that can be used in the plurality of cells or the first area; or can also be understood as the total number of paging sequences that can be used in the first transmission mode; or can also be understood as the total number of paging sequences that can be used to generate a paging message in the first transmission mode. The paging sequences that support transmission in the plurality of cells or the first area include the at least one paging sequence indicated by the first set.

[0500] Exemplarily, the identity of the at least one paging sequence indicated by the first set indication can be determined by the first identity, the third information and a first mapping function. Correspondingly, the first terminal device can determine the identity of the at least one paging sequence indicated by the first set indication according to the first identity, the third information and the first mapping function. For example, the first terminal device can substitute the first identity and the third information into the first mapping function to obtain the identity of the at least one paging sequence indicated by the first set indication. Optionally, the first mapping function can be such that the identities of the plurality of paging sequences are different, in other words, the identities of the plurality of paging sequences determined based on the first mapping function are different. Optionally, the first mapping function can be predefined or configured by the network device (e.g., the first network device), without limitation. For example, the related information of the first mapping function can be carried by the SIB, or can be carried by the MIB, or can be carried by the high-layer signaling, without limitation. The high-layer signaling is as previously described, without limitation.

[0501] In an example, the identity of the at least one paging sequence indicated by the first set indication can satisfy the following formula (6). PAGING id = f PAGING (E_RNTI, X, y) Formula (6)

[0502] wherein PAGING id is the identity of the at least one paging sequence indicated by the first set indication, E_RNTI is the first identity, X is the number of paging sequences supported to be transmitted in the plurality of cells or the first area, y is the number of the at least one paging sequence indicated by the first set indication, and f PAGING (·) is the first mapping function. Exemplarily, the f PAGING (·) can satisfy: wherein mod(·) is a modulo operation, is a floor function.

[0503] In another example, the identity of the at least one paging sequence indicated by the first set indication can satisfy the following formula (7). PAGING id = f PAGING (E_RNTI, X) Formula (7)

[0504] wherein PAGING id is the identity of the at least one paging sequence indicated by the first set indication, E_RNTI is the first identity, X is the number of paging sequences supported to be transmitted in the plurality of cells or the first area, and f PAGING (·) is the first mapping function. Exemplarily, the f PAGING (·) can satisfy: wherein is rounded down.

[0505] Optionally, assuming that the number of paging sequences supporting transmission in the plurality of cells or the first area is multiple, there can be a first correspondence relationship between the identification of the plurality of paging sequences and the related parameters of the W sequence. The first correspondence relationship can be predefined, or can also be configured by the network device (for example, the first network device), and is not limited. For example, the information of the first correspondence relationship can be carried by the SIB, or can also be carried by the MIB, or can also be carried by the high layer signaling, and is not limited.

[0506] In an example, the plurality of paging sequences includes a first paging sequence and a second paging sequence, and the first correspondence relationship can be: the identification of the first paging sequence is less than the identification of the second paging sequence, and the first parameter used to generate the first paging sequence is also less than the first parameter used to generate the second paging sequence. The first parameter belongs to the related parameters of the W sequence. For example, the first parameter can be the i-th term coefficient used when generating the plurality of paging sequences, i is an integer greater than 0 and less than or equal to d.

[0507] For example, the identification of the first paging sequence is denoted as id1, the identification of the second paging sequence is denoted as id2, and the highest order term of the W sequence used to generate the paging sequence is a cubic term, as shown in formula (4). The first parameter is the cubic term coefficient, the first parameter used to generate the first paging sequence is denoted as μ1, and the first parameter used to generate the second paging sequence is denoted as μ2. Then the first correspondence relationship can be: id1<id2, μ1<μ2; or, the first parameter is the quadratic term coefficient, the first parameter used to generate the first paging sequence is denoted as γ1, and the first parameter used to generate the second paging sequence is denoted as γ2. Then the first correspondence relationship can be: id1<id2, μ1=μ2, γ1<γ2; or, the first parameter is the linear term coefficient, the first parameter used to generate the first paging sequence is denoted as τ1, and the first parameter used to generate the second paging sequence is denoted as τ2. Then the first correspondence relationship can be: id1<id2, μ1=μ2, γ1=γ2, τ1<τ2.

[0508] In another example, the plurality of paging sequences includes a first paging sequence and a second paging sequence, and the first correspondence relationship can be: the identification of the first paging sequence is less than the identification of the second paging sequence, and the first parameter used to generate the first paging sequence is greater than the first parameter used to generate the second paging sequence. The first parameter belongs to the related parameters of the W sequence. For example, the first parameter can be the i-th term coefficient used when generating the plurality of paging sequences, i is an integer greater than 0 and less than or equal to d.

[0509] For example, the first paging sequence is denoted as id1, the second paging sequence is denoted as id2, and the highest order term of the paging sequence generated based on the W sequence is a quadratic term, as shown in equation (3). The first parameter is a quadratic coefficient, the first parameter used to generate the first paging sequence is denoted as γ1, and the first parameter used to generate the second paging sequence is denoted as γ2. The first correspondence relationship can be id1 < id2, γ1 > γ2. Alternatively, the first parameter is a linear coefficient, the first parameter used to generate the first paging sequence is denoted as τ1, and the first parameter used to generate the second paging sequence is denoted as τ2. The first correspondence relationship can be id1 < id2, γ1 = γ2, τ1 > τ2.

[0510] In a possible implementation, one or more of the following can be determined by the first identifier: the identifier of the reference signal sequence, the identifier of the synchronization sequence, the identifier of the random access sequence, the identifier of the sequence used to generate the HARQ signal, the identifier of the sequence used to generate the WUS, or the identifier of the sequence used to generate the data. For details, refer to the implementation process of the identifier of the paging sequence determined by the first identifier, which will not be described here.

[0511] 2. The first resource is associated with the first identifier.

[0512] The first resource is associated with the first identifier, which means that the first resource is determined by the first identifier. Correspondingly, the first terminal device can determine the first resource according to the first identifier. Optionally, the identifier of part or all of the first resource can be determined by the first identifier. For example, the first set indicates at least one paging sequence in the sequence, and the resource corresponding to the at least one paging sequence can be determined by the first identifier. For example, the identifier of the at least one resource can be determined by the first identifier, the at least one resource belongs to the first resource, and the at least one resource can be used to carry the at least one paging sequence indicated by the first set. Correspondingly, the first terminal device can determine the resource used to carry the at least one paging sequence according to the first identifier.

[0513] In an embodiment, the identifier of the at least one resource can be determined by the first identifier and fourth information. Correspondingly, the first terminal device can determine the identifier of the at least one resource according to the first identifier and the fourth information. The fourth information can include the number of the at least one resource, or include a second number, or include the number of the at least one resource and the second number. The second number can be understood as the number of resources used to carry the paging sequence that supports transmission in multiple cells or a first area. The resource used to carry the paging sequence that supports transmission in multiple cells or a first area includes at least one random access resource used to carry the at least one paging sequence indicated by the first set.

[0514] Exemplarily, the identity of the at least one resource can be determined by the first identity, the fourth information and a second mapping function. Correspondingly, the first terminal device can determine the identity of the at least one resource according to the first identity, the fourth information and the second mapping relationship. For example, the first terminal device can substitute the first identity and the fourth information into the second mapping function to obtain the identity of the at least one resource. Optionally, the second mapping function can be such that the identities of the resources corresponding to different first terminal devices are different for the same sequence. In other words, for different first terminal devices, if the same sequence is configured, the identities of the plurality of resources determined based on the second mapping function are different. Optionally, the second mapping function can be predefined or configured by the network device (for example, the first network device), which is not limited. For example, the related information of the second mapping function can be carried by the SIB, or can be carried by the MIB, or can be carried by the high layer signaling, which is not limited.

[0515] In an example, the identity of the at least one resource can satisfy the following formula (8). R id =g PAGING (E_RNTI,K) Formula (8)

[0516] wherein R id is the identity of the at least one resource, E_RNTI is the first identity, K is the number of resources used to carry the paging sequence supporting transmission in the plurality of cells or the first area, g PAGING (·) is the second mapping function. Exemplarily, the g PAGING (·) can satisfy: wherein, is the floor function.

[0517] In another example, the identity of the at least one resource can satisfy the following formula (9). R id =g PAGING (E_RNTI,K,z) Formula (9)

[0518] wherein R id is the identity of the at least one resource, E_RNTI is the first identity, K is the number of resources used to carry the paging sequence supporting transmission in the plurality of cells or the first area, z is the number of the at least one resource used to carry the first set indication of the at least one paging sequence, g PAGING (·) is the second mapping function. Exemplarily, the g PAGING (·) can satisfy: wherein, mod(·) is the modulo operation, is the floor function.

[0519] In a possible implementation, one or more of the following can be determined by the first identifier: a resource corresponding to the reference signal sequence, a resource corresponding to the synchronization sequence, a resource corresponding to the random access sequence, a resource corresponding to the sequence used to generate the HARQ signal, a resource corresponding to the sequence used to generate the WUS, or a resource corresponding to the sequence used to generate the data. For details, refer to the implementation process of the first identifier determining the resource corresponding to the paging sequence, which will not be described herein again.

[0520] The first terminal device determines the first sequence according to the first set, as an example illustrated in FIG. 9. Embodiments of the present application do not limit the implementation of the first terminal device determining the first sequence.

[0521] S903: The second network device determines the first sequence.

[0522] S903 is an optional step, which is represented by a dashed line in FIG. 9. For example, the second network device can determine the first sequence according to the first set. The cell corresponding to the second network device belongs to a plurality of cells, or the second network device belongs to M network devices, or the plurality of cells include the cell corresponding to the second network device. The second network device and the first network device can be the same network device, or can be two different network devices. FIG. 9 illustrates an example in which the second network device and the first network device are two different network devices.

[0523] For details of the implementation process of the second network device determining the first sequence, refer to the implementation process of the first terminal device determining the first sequence, which will not be described herein again.

[0524] In a possible implementation, the second network device and the first network device are two different network devices, and the second network device can obtain the configuration information of the first terminal device in the first transmission mode, i.e., at least one of the first identifier, the first set, or the first resource, by interacting with the first network device. It can be understood that embodiments of the present application do not limit the implementation of the second network device obtaining the configuration information of the first terminal device in the first transmission mode. For example, the second network device can also obtain the configuration information of the first terminal device in the first transmission mode from a management device. The management device can be used to maintain (or manage) the configuration information of at least one terminal device in the first transmission mode, and the at least one terminal device includes the first terminal device. For example, the first network device can send the configuration information of the first terminal device in the first transmission mode to the management device; correspondingly, the management device can receive the configuration information of the first terminal device in the first transmission mode from the first network device, and store it. Embodiments of the present application do not limit the specific implementation form of the management device.

[0525] The first sequence is determined by the second network device according to the first set, as an example illustrated in FIG. 9. Embodiments of the present application do not limit the implementation of the second network device to determine the first sequence.

[0526] S904: The first signal is transmitted between the second network device and the first terminal device.

[0527] The first signal is generated based on the first sequence. The first sequence is carried by the first resource. The first signal is carried by the first resource. For example, the first signal is transmitted between the second network device and the first terminal device through the first resource. Optionally, the first signal is generated based on the first sequence, which can be understood as: the first signal is mapped to the first resource by the first sequence; or it can also be understood as: the first signal is mapped to the first resource by the first sequence after encoding. For example, the first sequence is a paging sequence, and the first signal can be directly mapped to the first resource by the first sequence.

[0528] The first signal is transmitted between the second network device and the first terminal device, which can be: the first terminal device sends the first signal to the second network device; the second network device receives the first signal from the first terminal device; or it can also be: the second network device sends the first signal to the first terminal device; the first terminal device receives the first signal from the second network device. For example, the first sequence is any one of the following: a synchronization sequence, a paging sequence, a reference signal sequence, a sequence for generating a WUS, a sequence for generating a HARQ signal, or a sequence for generating data, and the second network device sends the first signal to the first terminal device; accordingly, the first terminal device receives the first signal from the second network device. For another example, the first sequence is any one of the following: a random access sequence, an RS sequence, a sequence for generating a HARQ signal, or a sequence for generating data, and the first terminal device sends the first signal to the second network device; accordingly, the second network device receives the first signal from the first terminal device.

[0529] In a possible implementation, the first sequence does not include the synchronization sequence indicated by the first set, and the first terminal device and the second network device can transmit the first signal in a synchronous mode or can transmit the first signal in an asynchronous mode, as shown in FIG. 10. In FIG. 10, the first sequence is taken as an example of the paging sequence indicated by the first set. In (1) of FIG. 10, the first terminal device receives the first signal in an asynchronous mode, that is, the first terminal device can receive the first signal without synchronization according to the synchronization signal of the second network device. In (2) of FIG. 10, the first terminal device receives the first signal in a synchronous mode, that is, the first terminal device needs to be synchronized according to the synchronization signal of the second network device before receiving the first signal. For example, before transmitting the first signal, the first terminal device and the second network device can be synchronized through the synchronization sequence indicated by the first set, and the implementation process can refer to the content of S902 to S904, which will not be described herein again. For another example, before transmitting the first signal, the first terminal device and the second network device can also be synchronized through a synchronization signal block (SSB).

[0530] Optionally, the transmission mode of the sequence indicated by the first set can be determined by the first identifier, or can be configured by the network device, and can also be predefined, which is not limited. The transmission mode is a synchronous mode or an asynchronous mode.

[0531] In a possible implementation, the sequence indicated by the first set includes at least one random access sequence, and the first sequence is a first random access sequence in the at least one random access sequence. The second network device can perform at least one of the following according to the first random access sequence: determining identity information of the first terminal device, determining a cell where the first terminal device is located, obtaining a scheduling request, or obtaining a buffer status report.

[0532] For example, the first sequence is used for initial access, and the second network device is the same network device as the first network device, and S904 can be understood as an initial access process. For another example, the first sequence is used for non-initial access, and S904 can be understood as a non-initial access process, such as an access process of the first terminal device after moving from the coverage range of the first network device to the coverage range of the second network device.

[0533] Optionally, part of the sequences indicated by the first set of indications can be configured by the fourth message, and the remaining sequences can be configured by the first message. For example, the first sequence is used for initial access, the first signal carries the third message, and the first sequence can be the second sequence, the second sequence is configured by the fourth message, and the sequences in the first set of indications other than the second sequence are configured by the first message. Optionally, part of the resources in the first resources can be configured by the fourth message, and the remaining resources can be configured by the first message. For example, the first sequence is used for initial access, the first signal carries the third message, the second resources occupied by the third message are configured by the fourth message, and the resources in the first resources other than the second resources can be configured by the first message. Wherein, the descriptions of the first message, the third message and the fourth message please refer to the related contents of the first communication method, and will not be repeated here.

[0534] In a possible implementation, the first sequence can be a sequence used for generating data, i.e., the first signal carries data, which can be grant based (GB) transmission, or the data can also be grant free (GF) transmission, which is not limited. For example, the second network device can send a twelfth message to the first terminal device, and the twelfth message is used to instruct the first terminal device to send or receive the first signal; accordingly, the first terminal device can receive the twelfth message of the second network device.

[0535] In a possible implementation, the first terminal device can be in a first state. For example, when the first terminal device transmits the sequences indicated by the first set of indications with at least one of the M network devices, the first terminal device can be in the first state. For example, the state of the first terminal device can include the first state. Optionally, the state of the first terminal device can also include at least one of the following: a connected state, an inactive state, or an idle state. Wherein, the connected state, the inactive state and the idle state please refer to the contents of the aforementioned term introduction, and will not be repeated here.

[0536] Exemplarily, the first state can be understood as a state corresponding to the first transmission mode. For example, when the first terminal device is in the first state, the first terminal device can communicate with the third network device through the first resource in the plurality of cells or the first area; or in other words, when the first terminal device is in the first state, the first terminal device can communicate with the third network device through the first transmission mode. For example, when the first terminal device is in the first state, the first terminal device can perform the content of S602 and S904. Optionally, when the first terminal device is in the first state, the first terminal device can also perform the content of S902. Optionally, when the first terminal device is in the first state, the first terminal device can also perform the content of S601 or S901. The third network device belongs to the M network devices. For example, the third network device can be any one of the M network devices. Optionally, the third network device can be the first network device, or can be a network device other than the first network device in the M network devices. Optionally, the communication with the third network device can be replaced with: transmitting the sequence of the first set indication to the third network device.

[0537] Optionally, the first state can also be referred to as a dedicated state, or a meta state, etc. The naming of the first state by embodiments of the present application is not limited.

[0538] In an implementation manner, the first state can reuse an RRC state. For example, the first state can include at least one of the following: a connected state, an inactive state, or an idle state. For example, if the first state is the connected state, when the first terminal device is in the connected state, the first terminal device can communicate with the third network device through the first resource in the plurality of cells or the first area. For another example, if the first state is the inactive state, when the first terminal device is in the inactive state, the first terminal device can communicate with the third network device through the first resource in the plurality of cells or the first area. For yet another example, if the first state is the idle state, when the first terminal device is in the idle state, the first terminal device can communicate with the third network device through the first resource in the plurality of cells or the first area. For still another example, if the first state includes the connected state and the inactive state, when the first terminal device is in the connected state or the inactive state, the first terminal device can communicate with the third network device through the first resource in the plurality of cells or the first area. The rest is similar and will not be listed one by one. In the implementation manner, the first state can reuse the RRC state, without defining a new state, and when the first terminal device is in the reused RRC state, there is no need to perform cumbersome mobility management and update, which can reduce the interaction between the network device and the terminal device, thereby facilitating the reduction of power consumption of the network device and the terminal device.

[0539] In another implementation, the first state can be a new state. For example, the first state can be a state other than the connected state, the inactive state, and the idle state. Alternatively, the first state can be a new RRC state. For example, the first state can be an RRC dedicated state. The naming of the first state is not limited in the embodiments of the present application.

[0540] In an example, the first state is associated with (or bound to) at least one of the connected state, the inactive state, or the idle state, as shown in (1) of FIG. 11. (1) of FIG. 11 is exemplified by the first state being associated with the connected state, the inactive state, and the idle state. The mutual switching is represented by bidirectional arrows in FIG. 11. The first state being associated with at least one of the connected state, the inactive state, or the idle state can be understood as that at least one of the connected state, the inactive state, or the idle state supports the first state, or can be understood as that the first terminal device enters the first state when entering at least one of the connected state, the inactive state, or the idle state, or can be understood as that the first terminal device starts (or activates, or wakes up) the first state when entering at least one of the connected state, the inactive state, or the idle state. For example, the first state is associated with the connected state, and the first terminal device enters the first state (or activates the first state, or wakes up the first state) when entering the connected state. For another example, the first state is associated with the inactive state, and the first terminal device enters the first state (or activates the first state, or wakes up the first state) when entering the inactive state. For yet another example, the first state is associated with the idle state, and the first terminal device enters the first state (or activates the first state, or wakes up the first state) when entering the idle state. For still another example, the first state is associated with both the connected state and the inactive state, and the first terminal device enters the first state (or activates the first state, or wakes up the first state) when entering the connected state or the inactive state. The rest of the cases are similar and will not be listed one by one. In the implementation, the first state is a new state, and is associated with at least one of the connected state, the inactive state, or the idle state. When the first terminal device is in the RRC state associated with the first state, there is no need to perform cumbersome mobility management and update, which can reduce the interaction between the network device and the terminal device, thereby facilitating the reduction of power consumption of the network device and the terminal device.

[0541] Alternatively, the association information can be predefined or configured by the network device (for example, the first network device), which is not limited. The association information can be used to indicate that the first state is associated with at least one of the connected state, the inactive state, or the idle state. Alternatively, the association information can be carried by a system message or high-layer signaling, which is not limited.

[0542] In another example, the first state can be switched between the connected state, the inactive state, and the idle state, as shown in (2) of FIG. 11. Alternatively, the switching between the first state, the connected state, the inactive state, and the idle state can be achieved by signaling or by a timer, without limitation. In this embodiment, the first state is a new state and can be switched between the connected state, the inactive state, and the idle state, which is conducive to adapting to more communication scenarios and has good compatibility.

[0543] For example, the third network device can send a sixth message to the first terminal device; and correspondingly, the first terminal device receives the sixth message from the third network device. The sixth message can be used to instruct the first terminal device to enter the first state, or the sixth message can be used to instruct the first terminal device to switch from the second state to the first state. The second state can be the connected state, or the second state can be the inactive state, or the second state can be the idle state. For example, before transmitting the first signal, the third network device can send the sixth message to the first terminal device.

[0544] For another example, the third network device can send a seventh message to the first terminal device; and correspondingly, the first terminal device receives the seventh message from the third network device. The seventh message can be used to instruct the first terminal device to enter the third state, or the seventh message can be used to instruct the first terminal device to switch from the first state to the third state. The third state can be the connected state, or the third state can be the inactive state, or the third state can be the idle state. For example, after transmitting the first signal, the third network device can send the seventh message to the first terminal device.

[0545] For another example, the first terminal device can switch from the second state to the first state when a first condition is met. The first condition can include that a timer corresponding to the second state expires. The second state can be the connected state, or the second state can be the inactive state, or the second state can be the idle state. For example, before transmitting the first signal, the timer corresponding to the second state expires, and the first terminal device can switch from the second state to the first state. Alternatively, the timer corresponding to the connected state, the timer corresponding to the inactive state, and the timer corresponding to the idle state can be the same, or can be different, or can be partially the same, without limitation.

[0546] For another example, in a case where the second condition is met, the first terminal device can switch from the first state to a third state. The second condition includes expiration of a timer corresponding to the first state. The third state can be a connected state, or the third state can also be an inactive state, or the third state can also be an idle state. For example, after the first signal is transmitted, the timer corresponding to the first state expires, and the first terminal device can switch from the first state to the third state.

[0547] In a possible implementation, in a case where a third condition is met, the first terminal device can start an initial access procedure. The third condition is that the first terminal device does not receive a synchronization sequence within a set time length, or the third condition is that the first terminal device does not receive the synchronization sequence within a plurality of continuous periods. The period can be a transmission period of the synchronization sequence.

[0548] In a possible implementation, the first sequence can be a first random access sequence, and the first signal can be a random access message or carry the random access message. The random access message is generated based on the first random access sequence, and the random access message is carried by the first resource. The first random access sequence belongs to at least one random access sequence indicated by the first set, or the at least one random access sequence indicated by the first set includes the first random access sequence. The first random access sequence can be used for the first terminal device to initiate random access. For example, S902 can be expressed as: the first terminal device determines the first random access sequence; S903 can be expressed as: the second network device determines the first random access sequence; and S904 can be expressed as: the first terminal device transmits a random access message according to the first random access sequence, and correspondingly, the second network device receives the random access message according to the first random access sequence.

[0549] In a possible implementation, the first sequence can be a first synchronization sequence, and the first signal can be a synchronization signal. The synchronization signal is generated based on the first synchronization sequence, and the synchronization signal is carried by the first resource. The first synchronization sequence belongs to at least one synchronization sequence indicated by the first set, or the at least one synchronization sequence indicated by the first set includes the first synchronization sequence. For example, S902 can be expressed as: the first terminal device determines the first synchronization sequence; S903 can be expressed as: the second network device determines the first synchronization sequence; and S904 can be expressed as: the second network device transmits a synchronization signal according to the first synchronization sequence, and correspondingly, the first terminal device can receive the synchronization signal according to the first synchronization sequence.

[0550] In a possible implementation, the first sequence can be a first paging sequence, and the first signal can be a paging message or the first signal carries the paging message. The paging message is obtained by mapping the first paging sequence to the first resource. The paging message is carried by the first resource. The first paging sequence can be one of at least one paging sequence included in at least one group of paging sequences, or the first paging sequence can be one group of paging sequences in the at least one group of paging sequences. The at least one group of paging sequences belongs to the sequences indicated by the first set, or the sequences indicated by the first set include the at least one group of paging sequences. For example, S902 can be expressed as: the first terminal device determines the first paging sequence; S903 can be expressed as: the second network device determines the first paging sequence; and S904 can be expressed as: the second network device sends the paging message according to the first paging sequence, and correspondingly, the first terminal device can receive the paging message according to the first paging sequence.

[0551] In a possible implementation, the first sequence can be a first SRS sequence, and the first signal can be an SRS. The SRS signal is generated based on the first SRS sequence, and the SRS is carried by the first resource. The first SRS sequence belongs to at least one SRS sequence indicated by the first set, or the first SRS sequence is included in the at least one SRS sequence indicated by the first set. For example, S902 can be expressed as: the first terminal device determines the first SRS sequence; S903 can be expressed as: the second network device determines the first SRS sequence; and S904 can be expressed as: the first terminal device sends the SRS according to the first SRS sequence, and correspondingly, the second network device receives the SRS according to the first SRS sequence.

[0552] It can be understood that the execution order of each step shown in FIG. 9 is taken as an example and is not limited thereto. For example, the first terminal device can first determine the first sequence, and the second network device can then determine the first sequence; or the second network device can first determine the first sequence, and the first terminal device can then determine the first sequence, that is, S903 is executed first, and then S902 is executed; or the first terminal device and the second network device can also determine the first sequence synchronously, without limitation.

[0553] In the third communication method, the first sequence to be transmitted is carried by the first resource in the plurality of cells, and the first terminal device is identified by the first identifier in the plurality of cells. In this way, when the first terminal device moves in the plurality of cells, the first terminal device can communicate with the network device through the first resource, the first identifier, and the sequences indicated by the first set, without the need to frequently perform synchronization, measurement, configuration, and the like, so that the mobility management and update can be simplified, the power consumption of the terminal device and the network device can be reduced, the communication performance can be improved, and the user experience can be improved.

[0554] In the embodiments provided in the present application, the method provided by the embodiments of the present application is introduced from the perspective of interaction of a plurality of communication devices (for example, the first terminal device and the first network device). The steps performed by the communication device (for example, the first terminal device or the first network device) can be implemented by different functional entities constituting the communication device. The communication device (for example, the first terminal device or the first network device) can include a hardware structure and / or a software module to implement the above functions in the form of hardware structure, software module, or hardware structure plus software module. Whether a certain function is implemented in the form of hardware structure, software module, or hardware structure plus software module depends on the specific application of the technical solution and the design constraint conditions.

[0555] The communication device used to implement the above method in the embodiments of the present application will be described below with reference to the accompanying drawings. Therefore, the content in the foregoing can be used in the subsequent embodiments, and the repeated content will not be described again.

[0556] FIG. 12 exemplarily shows a structural schematic diagram of a communication device 1200. The communication device 1200 can implement the functions or steps implemented by the first terminal device or the first network device in the above method embodiments.

[0557] Exemplarily, when the communication device 1200 is used to implement the functions or steps implemented by the first terminal device in the above method embodiments, the communication device 1200 can be the first terminal device or a component in the first terminal device.

[0558] Exemplarily, when the communication device 1200 is used to implement the functions or steps implemented by the first network device in the above method embodiments, the communication device 1200 can be the first network device or a component (such as a DU and / or an RU, etc.) in the first network device.

[0559] In an implementation manner, the communication device 1200 can include a processing module 1201 and a transceiver module 1202, or include the processing module 1201 and not include the transceiver module 1202, or include the transceiver module 1202 and not include the processing module 1201. Wherein:

[0560] The processing module 1201 can be used to support the communication device 1200 to perform the processing actions in the above method embodiments. The processing module 1201 can be implemented by one or more processors. For example, the processor can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA), microcontroller units (MCU), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor can be a microprocessor, or any conventional processor.

[0561] In this application, the processing module 1201 can also be referred to as a processing unit, etc., without limitation.

[0562] The transceiver module 1202 is used to input and / or output information. The input information can be replaced by received information, and the output information can be replaced by transmitted information. When outputting information, the transceiver module 1202 can output information to other devices outside the communication device 1200, or output information to other units in the communication device 1200. In some manners, the transceiver module 1202 can be implemented by at least one of a physical interface, a communication module, a communication interface, an input / output interface. In other manners, the transceiver module 1202 can be implemented by an interface circuit, for example, a mobile communication module. The mobile communication module can include one or more of at least one antenna, at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc.

[0563] Optionally, the transceiver module 1202 can include a sending module and a receiving module. The sending module is used to perform the sending operations in the above method embodiments. The receiving module is used to perform the receiving operations in the above method embodiments. It should be noted that the communication device 1200 can include the sending module, but not the receiving module. Alternatively, the communication device 1200 can include the receiving module, but not the sending module. Whether the sending module and the receiving module are included in the communication device 1200 can depend on whether the communication device 1200 performs the sending actions and the receiving actions in the above solutions.

[0564] In this application, the transceiver module 1202 can also be referred to as a communication interface, or a communication module, or a transceiver unit, or an interface module, or an interface unit, or a communication unit, etc., without limitation.

[0565] It is noted that the communication apparatus 1200 can include the processing module 1201 but not the transceiver module 1202. Or, the communication apparatus 1200 can include the transceiver module 1202 but not the processing module 1201. Whether the communication apparatus 1200 includes the processing module 1201 and the transceiver module 1202 can depend on whether the communication apparatus 1200 performs the processing action and the transceiving action in the above-described schemes.

[0566] Optionally, the communication apparatus 1200 can further include a storage module, which is not shown in FIG. 12. The storage module can be used to store instructions and / or data. The processing module 1201 can read the instructions and / or data in the storage module, so that the communication apparatus 1200 implements the foregoing method embodiments.

[0567] Optionally, the communication apparatus 1200 can be a chip system. The transceiver module 1202 can be an input / output interface of a chip (e.g., a baseband chip). The processing module 1201 can be a processor of the chip system.

[0568] In a possible design, when the communication apparatus 1200 is a communication device or a communication module in a communication device, the function of the processing module 1201 can be implemented by one or more processors. For example, the processor can include a Modem chip (also referred to as a baseband chip), or a system-on-a-chip (SoC) chip or a system-in-package (SIP) chip including a Modem core. The function of the transceiver module 1202 can be implemented by a transceiver circuit.

[0569] In a possible design, when the communication apparatus 1200 is a circuit or chip responsible for communication functions in a communication device, such as a Modem chip or a system-on-a-chip (SoC) chip or a system-in-package (SIP) chip including a Modem core, the function of the processing module 1201 can be implemented by a circuit system including one or more processors or processor cores in the chip. The function of the transceiver module 1202 can be implemented by an interface circuit or a data transceiving circuit in the chip.

[0570] In this embodiment, the communication device can be a terminal device or an access network device.

[0571] In a first implementation, the communication apparatus 1200 can implement functions of a first terminal device, and perform the following: the processing module 1201 is configured to determine a first sequence, the first sequence being any one of a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data; and the transceiver module 1202 is configured to transmit a first signal, or receive a first signal, wherein the first signal is generated based on the first sequence, and the first signal is carried by a first resource, and the first resource is used to carry at least one sequence, and the at least one sequence includes the first sequence.

[0572] In a possible implementation, the at least one sequence can include at least one of a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data.

[0573] In a possible implementation, the first resource used to carry the at least one sequence can be replaced with: the first resource used to carry the at least one sequence in a plurality of cells.

[0574] In a possible implementation, the first terminal device can be identified by a first identifier in the plurality of cells.

[0575] In a possible implementation, the transceiver module 1202 is furt...

Claims

1. A communication method characterized by comprising: The method applied to a first terminal device or an apparatus in the first terminal device, the method comprising: determining a first sequence, the first sequence being any one of a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence for generating a wake-up signal, a sequence for generating a hybrid automatic repeat request signal, or a sequence for generating data; transmitting or receiving a first signal, wherein the first signal is generated based on the first sequence, the first signal is carried by a first resource, and the first resource is used to carry at least one sequence including the first sequence.

2. The method of claim 1, wherein, The first resource is used to carry at least one sequence, comprising: The first resource is used to carry the at least one sequence in a plurality of cells.

3. The method according to claim 1 or 2, characterized in that, The first terminal device is identified by a first identifier in the plurality of cells.

4. The method according to any one of claims 1 to 3, characterized in that, The method further comprises: receiving a first message from a first network device, the first message including at least one of the first identifier, information indicating the at least one sequence, or the first resource, wherein the first identifier is used to identify the first terminal device in a plurality of cells including a cell corresponding to the first network device.

5. The method of claim 4, wherein, The method further comprises: receiving a second message from the first network device, the second message indicating that the first network device supports a first transmission mode.

6. The method according to claim 4 or 5, characterized in that, The method further comprises: sending a third message to the first network device, the third message indicating that the first terminal device uses the first transmission mode.

7. The method of claim 6, wherein: the third message is carried by a second resource, and the third message indicates that the first terminal device uses the first transmission mode; or the third message is carried by a third resource, and the third message indicates that the first terminal device uses a second transmission mode different from the first transmission mode.

8. The method of claim 6 or 7, wherein: the third message is generated based on a second sequence, and the third message indicates that the first terminal device uses the first transmission mode; or the third message is generated based on a third sequence, and the third message indicates that the first terminal device uses a second transmission mode different from the first transmission mode.

9. The method of claim 6 or 7, wherein: the third message is scrambled based on first information, and the third message indicates that the first terminal device uses the first transmission mode; or the third message is scrambled based on second information, and the third message indicates that the first terminal device uses a second transmission mode different from the first transmission mode.

10. The method of any one of claims 1 to 9, wherein: the at least one sequence includes at least one paging sequence, and each paging sequence in the at least one paging sequence is used to page the first terminal device in a plurality of cells; or The at least one sequence comprises at least one group of paging sequences, each group of paging sequences in the at least one group of paging sequences comprises at least one paging sequence, and each group of paging sequences in the at least one group of paging sequences is used for paging the first terminal device in multiple cells.

11. The method according to any one of claims 1 to 10, characterized in that, The at least one sequence comprises at least one paging sequence, and the at least one paging sequence is generated based on a W sequence.

12. The method according to any one of claims 1 to 11, characterized in that, The at least one sequence comprises multiple paging sequences. The highest order term used when generating the multiple paging sequences based on a W sequence is the same. The second highest order term used when generating the multiple paging sequences based on a W sequence is different, and / or the first order term used when generating the multiple paging sequences based on the W sequence is different.

13. The method according to any one of claims 1 to 11, characterized in that, The at least one sequence comprises at least one sounding reference signal sequence, and the at least one sounding reference signal sequence is generated based on a W sequence.

14. The method according to any one of claims 1 to 13, characterized in that, The at least one sequence comprises multiple sounding reference signal sequences. The highest order term used when generating the multiple sounding reference signal sequences based on a W sequence is the same. The second highest order term used when generating the multiple sounding reference signal sequences based on a W sequence is different, and / or the first order term used when generating the multiple sounding reference signal sequences based on the W sequence is different.

15. The method according to any one of claims 1 to 14, characterized in that, The at least one sequence comprises at least one synchronization sequence, and the at least one synchronization sequence is used for the first terminal device to synchronize with network devices corresponding to multiple cells.

16. The method according to any one of claims 1 to 15, characterized in that, The at least one sequence comprises at least one synchronization sequence, and the at least one synchronization sequence is generated based on a W sequence.

17. The method of any one of claims 1 to 16, wherein, The at least one sequence comprises at least one synchronization sequence, and each synchronization sequence in the at least one synchronization sequence consists of one sequence.

18. The method of any one of claims 1 to 17, wherein, The at least one sequence comprises at least one random access sequence, and the at least one random access sequence is generated based on a W sequence.

19. The method of any one of claims 1 to 18, wherein, The at least one sequence comprises multiple random access sequences, and the highest order term used when generating the multiple random access sequences based on a W sequence is the same.

20. The method of any one of claims 11-14, 16, 18, and 19, wherein, The highest order term of the W sequence is a second order term, or the highest order term of the W sequence is a third order term, or the highest order term of the W sequence is a fourth order term.

21. The method of any one of claims 1 to 20, wherein, The first terminal device is in a first state.

22. The method of any one of claims 1 to 21, wherein, The first state is a connected state; or The first state is an inactive state; or The first state is an idle state; or The first state is a state other than the connected state, the active state, and the idle state.

23. The method of claim 21 or 22, wherein, The first state is a state other than the connected state, the active state, and the idle state, and the first state is associated with at least one of the connected state, the active state, or the idle state.

24. A method of communication, comprising: The method is applied to a first network device or an apparatus in the first network device, and the method comprises: determining a first sequence, the first sequence being any one of a synchronization sequence, a paging sequence, a random access sequence, a reference signal sequence, a sequence used for generating a wake-up signal, a sequence used for generating a hybrid automatic repeat request signal, or a sequence used for generating data; transmitting, to a first terminal device, a first signal, or receiving, from the first terminal device, the first signal, wherein the first signal is generated based on the first sequence, the first signal is carried by first resources, and the first resources are used to carry at least one sequence, and the at least one sequence includes the first sequence.

25. The method of claim 24, wherein, The first resources are used to carry at least one sequence, including: The first resources are used to carry the at least one sequence in a plurality of cells.

26. The method of claim 24 or 25, wherein, The first terminal device is identified by a first identifier in the plurality of cells.

27. The method of any one of claims 24-26, wherein, The method further includes: transmitting, to the first terminal device, a first message, the first message including at least one of the following: the first identifier, information indicating the at least one sequence, or the first resources, wherein the first identifier is used to identify the first terminal device in a plurality of cells, and the plurality of cells include a cell corresponding to the first network device.

28. The method of claim 27, wherein, The method further includes: transmitting, to the first terminal device, a second message, the second message indicating that the first network device supports a first transmission mode.

29. The method of claim 27 or 28, wherein, The method further includes: receiving, from the first terminal device, a third message, the third message indicating that the first terminal device uses the first transmission mode.

30. The method of claim 29, wherein: the third message is carried by second resources, and the third message indicates that the first terminal device uses the first transmission mode; or the third message is carried by third resources, and the third message indicates that the first terminal device uses a second transmission mode, and the second transmission mode is different from the first transmission mode.

31. The method of claim 29 or 30, wherein: the third message is generated based on a second sequence, and the third message indicates that the first terminal device uses the first transmission mode; or the third message is generated based on a third sequence, and the third message indicates that the first terminal device uses a second transmission mode, and the second transmission mode is different from the first transmission mode.

32. The method of claim 29 or 30, wherein: the third message is scrambled based on first information, and the third message indicates that the first terminal device uses the first transmission mode; or the third message is scrambled based on second information, and the third message indicates that the first terminal device uses a second transmission mode, and the second transmission mode is different from the first transmission mode.

33. The method of any of claims 24 to 32, wherein: the at least one sequence includes at least one paging sequence, and each paging sequence in the at least one paging sequence is used to page the first terminal device in a plurality of cells; or the at least one sequence includes at least one group of paging sequences, and each group of paging sequences in the at least one group of paging sequences includes at least one paging sequence, and each group of paging sequences in the at least one group of paging sequences is used to page the first terminal device in a plurality of cells.

34. The method of any one of claims 24-33, wherein, The at least one sequence includes at least one paging sequence, and the at least one paging sequence is generated based on a W sequence.

35. The method of any one of claims 24-34, wherein, The at least one sequence comprises a plurality of paging sequences. The highest order term used in generating the plurality of paging sequences based on the W sequence is the same. The second highest order term used in generating the plurality of paging sequences based on the W sequence is different, and / or the first order term used in generating the plurality of paging sequences based on the W sequence is different.

36. The method of any one of claims 24-35, wherein, The at least one sequence comprises at least one sounding reference signal sequence, and the at least one sounding reference signal sequence is generated based on a W sequence.

37. The method of any one of claims 24-36, wherein, The at least one sequence comprises a plurality of sounding reference signal sequences. The highest order term used in generating the plurality of sounding reference signal sequences based on the W sequence is the same. The second highest order term used in generating the plurality of sounding reference signal sequences based on the W sequence is different, and / or the first order term used in generating the plurality of sounding reference signal sequences based on the W sequence is different.

38. The method of any one of claims 24-37, wherein, The at least one sequence comprises at least one synchronization sequence, and the at least one synchronization sequence is used for the first terminal device to synchronize with a network device corresponding to a plurality of cells.

39. The method of any one of claims 24-38, wherein, The at least one sequence comprises at least one synchronization sequence, and the at least one synchronization sequence is generated based on a W sequence.

40. The method of any one of claims 24-39, wherein, The at least one sequence comprises at least one synchronization sequence, and each of the at least one synchronization sequence consists of one sequence.

41. The method of any one of claims 24-40, wherein, The at least one sequence comprises at least one random access sequence, and the at least one random access sequence is generated based on a W sequence.

42. The method of any one of claims 24-41, wherein, The at least one sequence comprises a plurality of random access sequences, and the highest order term used in generating the plurality of random access sequences based on the W sequence is the same.

43. The method of any one of claims 34-37, 39, 41, and 42, wherein, The highest order term of the W sequence is a quadratic term, or the highest order term of the W sequence is a cubic term, or the highest order term of the W sequence is a quartic term.

44. The method of any one of claims 24-43, wherein, The first terminal device is in a first state.

45. The method of any of claims 24-44, wherein, The first state is a connected state; or The first state is an inactive state; or The first state is an idle state; or The first state is a state other than the connected state, the active state, and the idle state.

46. The method of claim 44 or 45, wherein, The first state is a state other than the connected state, the active state, and the idle state, and the first state is associated with at least one of the connected state, the active state, or the idle state.

47. A communications device, characterized by The apparatus comprises means for performing the method of any of claims 1-46.

48. A communications device, characterized by The apparatus comprises at least one processor configured to perform the method of any of claims 1-46.

49. A communication system, characterized by The apparatus comprises a first terminal device and / or a first network device, wherein the first terminal device is configured to perform the method of any of claims 1-23, and the first network device is configured to perform the method of any of claims 24-46.

50. A computer-readable storage medium, comprising: The computer program product comprises a computer program that, when executed on a computer, causes the method of any of claims 1-46 to be implemented.

51. A computer program product, characterised in that, The computer program product comprises a computer program that, when executed on a computer, causes the method of any of claims 1-46 to be implemented.

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