Control information sending method, control information receiving method and communication device

Abstract

Embodiments of the present application provide a method for transmitting (or receiving) control information and a related communication device. By adding time-frequency resources for repeatedly transmitting control information, a terminal device before entering a connected state can receive the control information on at least two time-frequency resources. This means that the terminal device may receive at least two copies of the control information. Because the network device increases the time-frequency resources for transmitting control information to the terminal device and increases the number of times the control information is transmitted, the probability of the terminal device correctly receiving the control information can be increased.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and in particular to a control information sending method, a control information receiving method, and a communication device. Background Art

[0002] The synchronization signal / broadcast channel block (SS / PBCH block, SSB) is defined in the new radio (NR) technology of the fifth generation mobile communication system (5G). Among them, an SSB contains the primary synchronization signal (PSS), the secondary synchronization signal (SSS), and the physical broadcast channel (PBCH).

[0003] Generally, when a terminal device accesses a network, it first receives the SSB sent by the network device. The PBCH in the SSB carries information indicating the time-frequency domain location of the time-frequency resource set where the physical downlink control channel (PDCCH) is located. The PDCCH carries downlink control information (DCI) sent by the network device to the terminal device. The terminal device then receives the PDCCH and obtains the DCI according to the PBCH instructions.

[0004] However, in actual applications, since there may be a long distance between terminal devices and network devices, the signal-to-noise ratio (SNR) of these terminal devices is extremely low, so that the accuracy of DCI received by terminal devices far away from the network devices is often low. Summary of the Invention

[0005] The embodiments of the present application provide a method for sending (or receiving) control information and a communication device, which can improve the probability of correctly receiving control information before the connection state.

[0006] In a first aspect, the present application provides a control information receiving method, which involves a terminal device and a network device. Prior to entering a connected state, the terminal device receives first indication information from the network device, where the first indication information indicates a first time-frequency resource set, and the first time-frequency resource set and a second time-frequency resource set are used to transmit first control information. Prior to entering the connected state, the terminal device receives the first control information sent by the network device on the first time-frequency resource set and the second time-frequency resource set, respectively.

[0007] The first time-frequency resource set and the second time-frequency resource set are time-frequency resources configured by the network device for transmitting first control information. The first control information is carried in one or more time-frequency resources in the first time-frequency resource set. For ease of description, the first control information is referred to as being carried in the first time-frequency resource in the first time-frequency resource set. That is, when a terminal device blindly detects the first time-frequency resource in the first time-frequency resource set, the terminal device can receive the first control information on the first time-frequency resource. Similarly, the first control information is also carried in one or more time-frequency resources in the second time-frequency resource set. For ease of description, the first control information is referred to as being carried in the second time-frequency resource in the second time-frequency resource set. That is, when a terminal device blindly detects the second time-frequency resource in the second time-frequency resource set, the terminal device can receive the first control information on the second time-frequency resource. It should be understood that the first time-frequency resource can be a single time-frequency resource, such as a resource block (RB) or a resource element (RE), or multiple time-frequency resources, such as multiple resource blocks (RB) or multiple resource elements (RE). This is not limited to specific terms.

[0008] Optionally, the network device configures a time-frequency resource set for the terminal device by sending an indication message to the terminal device, or notifies the terminal device of the configuration of the time-frequency resource set. For example, the network device sends a first indication message to the terminal device to configure a first time-frequency resource set for the terminal device or to notify the terminal device that the first time-frequency resource set is not configured for the terminal device. For another example, the network device sends a second indication message to the terminal device to configure a second time-frequency resource set for the terminal device.

[0009] In this embodiment, the terminal device can receive first indication information indicating the first time-frequency resource set before the connection state, and the first time-frequency resource set and the second time-frequency resource set are both used to transmit the first control information. Therefore, the terminal device can receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively. That is to say, the network device will not only send the first control information to the terminal device on the first time-frequency resource set, but also send the first control information to the terminal device on the second time-frequency resource set. Therefore, the terminal device may receive the first control information on the first time-frequency resource set, and may also receive the first control information on the second time-frequency resource set. Compared with the solution in the traditional technology that the terminal device in the non-connected state only receives the first control information on the second time-frequency resource set, the terminal device of the solution of the present application can receive the first control information through at least two time-frequency resource sets, and the terminal device can receive at least two copies of the first control information. Therefore, the probability of the terminal device correctly receiving the first control information can be increased.

[0010] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0011] In this embodiment, the type of the first control information is clarified. Generally, different types of control information have different functions and different resources for scheduling. This embodiment proposes that the aforementioned first control information is used to schedule the system information block SIB1. That is, the first control information sent by the network device to the terminal device is to indicate information related to SIB1 to the terminal device, rather than to schedule other information or resources. In addition, since the control information used to schedule SIB1 is generally control information scrambled by SI-RNTI, the aforementioned first control information can also be understood as control information scrambled by SI-RNTI.

[0012] In an optional embodiment, the first time-frequency resource belongs to a first time-frequency resource set, the second time-frequency resource belongs to a second time-frequency resource set, the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first synchronization signal block SSB, and the first time-frequency resource set and the second time-frequency resource set are both time-frequency resource sets of candidate sets for carrying control channels.

[0013] Optionally, the index value of the SSB used by the terminal device to determine the time domain position of the first time-frequency resource set is the same as the index value of the SSB used by the terminal device to determine the time domain position of the second time-frequency resource set, that is, the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set based on the index value of the first SSB.

[0014] In this embodiment, it is proposed that when the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set, the terminal device uses the same SSB index value (i.e., the index value of the first SSB), which is beneficial to saving the signaling sent by the network device to the terminal device for indicating the index value of the SSB, and is also beneficial to reducing the complexity of the terminal device in obtaining the index value of the SSB used to determine the first time-frequency resource.

[0015] It should be understood that when a network device configures a certain time-frequency resource to a terminal device, it indicates to the terminal device a time-frequency resource set that includes the aforementioned time-frequency resource, and the terminal device monitors each time-frequency resource in the aforementioned time-frequency resource set, so that the terminal device can receive the first control information on the time-frequency resource that carries the first control information. For example, the aforementioned first indication information can directly or indirectly indicate the time-frequency domain position of the first time-frequency resource set where the first time-frequency resource is located. The second indication information can directly indicate the time-frequency domain position of the second time-frequency resource set where the second time-frequency resource is located.

[0016] In an optional embodiment, the first indication information is used to indicate the time domain position of the first time-frequency resource set; the method also includes: the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information.

[0017] In this embodiment, it is proposed that the aforementioned first indication information can directly or indirectly indicate the time domain location of the first time-frequency resource set. Therefore, the terminal device can determine the time domain location of the first time-frequency resource set based on the first indication information, and then the terminal device monitors each time-frequency resource in the first time-frequency resource set on the first time-frequency resource set, so that the terminal device receives the first control information on the first time-frequency resource.

[0018] It should be understood that the network device configuring the first time-frequency resource for the terminal device includes but is not limited to the network device indicating the time-frequency domain position of the first time-frequency resource set (including the time domain position and / or frequency domain position of the time-frequency resource set) to the terminal device. Optionally, the network device indicates the time-frequency domain position of the first time-frequency resource set to the terminal device in an explicit manner. For example, the first indication information sent by the network device to the terminal device can directly indicate the time-frequency domain position of the first time-frequency resource set, and the terminal device can determine the time-frequency domain position of the first time-frequency resource set without relying on other information sent by the network device to the terminal device. Optionally, the network device indicates the time-frequency domain position of the first time-frequency resource set to the terminal device in an implicit manner. For example, the content indicated by the first indication information sent by the network device to the terminal device is related to another time-frequency resource set (for example, the second time-frequency resource set), so that the terminal device determines the time-frequency domain position of the first time-frequency resource set based on the aforementioned other time-frequency resource set (for example, the second time-frequency resource set).

[0019] In an optional embodiment, the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information, including: the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first synchronization signal block SSB, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0020] In this embodiment, it is proposed that the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB. Therefore, the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are the same or similar, then the time domain position of the first time-frequency resource in the first time-frequency resource set and the time domain position of the second time-frequency resource in the second time-frequency resource set are also similar. Therefore, the terminal device may receive the first control information from the first time-frequency resource of the first time-frequency resource set and the second time-frequency resource of the second time-frequency resource set respectively within a shorter time range (for example, one time slot or two adjacent time slots), that is, the terminal device may receive at least two copies of the first control information within a shorter time range. Therefore, it is beneficial to reduce the delay of the terminal device in receiving the first control information, and it is also beneficial to improve the efficiency of the terminal device in successfully receiving the first control information.

[0021] In an optional embodiment, the first indication information includes a first association relationship, which is used to indicate the association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set; the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information, including: the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the time domain position of the second time-frequency resource set.

[0022] In this embodiment, it is proposed that the network device indicates the time-frequency domain position of the first time-frequency resource to the terminal device in an implicit manner. Specifically, the first indication information provided by the network device to the terminal device includes a first association relationship, and the first association relationship is used to indicate the association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set. Therefore, when the terminal device is able to know the time domain position of the second time-frequency resource set, the terminal device can determine the time domain position of the first time-frequency resource set based on the aforementioned first association relationship and the time domain position of the second time-frequency resource set. This is conducive to the terminal device quickly determining the time domain position of the first time-frequency resource set and reducing the complexity of the terminal device in determining the time domain position of the first time-frequency resource set.

[0023] It should be understood that the time domain position of the second time-frequency resource is determined by the terminal device through other indication information. For example, the network device uses traditional technology to send the second indication information to the terminal device, and the second indication information can directly indicate the time domain position of the second time-frequency resource (including the time domain position of the second time-frequency resource) to the terminal device. Optionally, the terminal device first determines the time domain position of the second time-frequency resource based on the second indication information, and then determines the time domain position of the first time-frequency resource based on the first indication information.

[0024] In an optional embodiment, the first indication information includes a first association relationship, and the first association relationship is used to indicate the association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set. The terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first synchronization signal block SSB, including: the terminal device determines the time domain position of the second time-frequency resource set based on the second indication information and the index value of the first SSB, and the second indication information is used to indicate the time domain position of the second time-frequency resource set; the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the time domain position of the second time-frequency resource set.

[0025] In this embodiment, it is proposed that the content indicated by the first indication information is related to another time-frequency resource set (i.e., the second time-frequency resource set), and the terminal device first determines the time domain position of the second time-frequency resource set based on the second indication information and the index value of the first SSB, and then determines the time-frequency domain position of the first time-frequency resource set based on the first indication information and the time domain position of the second time-frequency resource set. In this process, the terminal device only needs to query the reference table (for example, Table 13-11 or Table 13-12 in the 3GPP protocol) and perform calculations in the process of determining the second time-frequency resource set. When determining the time domain position of the first time-frequency resource set, the time domain position of the first time-frequency resource set can be directly determined based on the time domain position of the second time-frequency resource set and the first association relationship, without the need to look up the table again for calculation, which is conducive to reducing the complexity of the terminal device in determining the time domain position of the first time-frequency resource, and is also conducive to the terminal device quickly determining the time domain position of the first time-frequency resource, reducing the delay in determining the time domain position of the first time-frequency resource.

[0026] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

[0027] In an optional implementation manner, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

[0028] In this embodiment, it is proposed that the first time-frequency resource set and the second time-frequency resource set are respectively located in the same time slot in the time domain. In the process of the terminal device monitoring the control channel in the time slot indicated by the time domain position of the second time-frequency resource set, the terminal device can receive at least two first control information on several consecutive symbols in the time slot, without the need for the terminal device to additionally monitor the control channels of other time slots (for example, time slots other than the time domain position of the second time-frequency resource set), which is beneficial to saving the time required for the terminal device to obtain the first control information and is beneficial to improving the success rate of the terminal device in receiving the first control information.

[0029] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0030] In an optional implementation manner, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

[0031] In this embodiment, it is proposed that the first time-frequency resource set and the second time-frequency resource set are respectively located in continuous and different time slots in the time domain. The terminal device can receive at least two first control information in continuous and different time slots. The terminal device does not need to monitor the control channel in discontinuous time slots (for example, in time slots with an index value of 0 and time slots with an index value of 3), which is beneficial for the terminal device to obtain the first control information in a relatively short time, and is beneficial to improving the success rate of the terminal device in receiving the first control information.

[0032] In an optional implementation manner, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0033] In this embodiment, since the time slot is a concept in the time domain, the time slot in which the first time-frequency resource set is located is located before the time slot in which the second time-frequency resource set is located. This means that the network device can send the first control information to the terminal device on the first time-frequency resource set earlier than the time at which the first control information is sent to the terminal device on the second time-frequency resource set. Therefore, compared to a solution in which the first control information is received only from the second time-frequency resource set, the terminal device may receive the first control information earlier, which helps to shorten the time required for the terminal device to receive the first control information.

[0034] It should be noted that there are many other specific implementation methods of the embodiments of the present application. Please refer to the specific implementation methods and beneficial effects of the first aspect for details, which will not be repeated here.

[0035] In a second aspect, the present application provides a method for receiving control information, which relates to a terminal device and a network device. The terminal device receives first indication information before being in a connected state, and the first indication information is used to indicate whether there is repeated transmission of the first control information. When the first indication information indicates that there is repeated transmission of the first control information, the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to the first table. The terminal device receives the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before being in a connected state.

[0036] Among them, the first indication information is used to indicate whether there is repeated transmission of the first control information. It can also be understood that the first indication information is used to indicate whether the first control information needs to be repeatedly transmitted. It can also be understood that the first indication information is used to indicate whether there is a time domain resource set (for example, the first time-frequency resource set) for repeated transmission of the first control information. It can also be understood that the first indication information is used to indicate whether there is a time domain resource (for example, the first time-frequency resource in the first time-frequency resource set) for repeated transmission of the first control information. The specific details are not limited here.

[0037] Optionally, the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set based on a row in the first table. That is, after the terminal device determines an index value for table lookup based on a certain indication information, the terminal device can determine a row of parameters in the first table based on the index value, and based on the parameters of this row in the first table without querying the parameters of other rows in the first table, the terminal device can determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0038] In this embodiment, the terminal device may receive first indication information indicating whether to repeatedly transmit the first control information before entering the connected state. When the first indication information indicates that the first control information needs to be repeatedly transmitted, the terminal device will query a newly defined table (i.e., the first table). The terminal device can determine two time-frequency resource sets (i.e., the first time-frequency resource set and the second time-frequency resource set) for transmitting the first control information based on the first table. Then, the terminal device receives the first control information on the aforementioned first time-frequency resource set and the second time-frequency resource set. In other words, the network device will not only send the first control information to the terminal device on the first time-frequency resource set, but also send the first control information to the terminal device on the second time-frequency resource set. Therefore, the terminal device may receive the first control information on the first time-frequency resource set, or may receive the first control information on the second time-frequency resource set. Compared to the solution in the conventional technology in which a terminal device in the unconnected state only receives the first control information on the second time-frequency resource set, the terminal device in the solution of the present application can receive the first control information through at least two time-frequency resource sets, and the terminal device can receive at least two copies of the first control information. Therefore, the probability of the terminal device correctly receiving the first control information can be increased.

[0039] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0040] In this embodiment, the type of the first control information is clarified. Generally, different types of control information have different functions and different resources for scheduling. This embodiment proposes that the aforementioned first control information is used to schedule the system information block SIB1. That is, the first control information sent by the network device to the terminal device is to indicate information related to SIB1 to the terminal device, rather than to schedule other information or resources. In addition, since the control information used to schedule SIB1 is generally control information scrambled by SI-RNTI, the aforementioned first control information can also be understood as control information scrambled by SI-RNTI.

[0041] In an optional embodiment, the first indication information is located in a first message, and the first message also includes a main information block MIB carrying second indication information, and the second indication information is used to indicate the time domain position of the second time-frequency resource set; the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to the first table, including: the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to the second indication information, the index value of the first synchronization signal block SSB and the first table.

[0042] In an optional implementation, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0043] In an optional embodiment, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0044] Optionally, the terminal device determines a first index value based on the second indication information, and the first index value is used to query the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set in the first table. The first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set. The terminal device determines the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set based on the first index value and the first table.

[0045] In this embodiment, the terminal device can obtain two index values ​​about the first symbol (i.e., the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set) in one table lookup operation by querying the aforementioned first table based on the first index value. In traditional technology, the first index value determined based on the second indication information can only query one index value about the first symbol (i.e., the index value of the first symbol in the monitoring window of the second time-frequency resource set). Therefore, the solution proposed in this embodiment is conducive to reducing the number of times the terminal device queries the reference table, and is conducive to the terminal device quickly determining the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0046] In an optional embodiment, the first table includes:

[0047]

[0048] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0049] In a third aspect, the present application provides a method for transmitting control information, the method involving a terminal device and a network device. The network device transmits first indication information, the first indication information being used to indicate a first time-frequency resource set, the first time-frequency resource set and the second time-frequency resource set being used to transmit first control information to a terminal device in a non-connected state; the network device transmits the first control information on the first time-frequency resource set and the second time-frequency resource set, respectively.

[0050] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0051] In an optional implementation, the first indication information is used to indicate the time domain position of the first time-frequency resource set.

[0052] In an optional embodiment, the first indication information and the index value of the first synchronization signal block SSB are used to determine the time domain position of the first time-frequency resource set, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0053] In an optional embodiment, the first indication information includes a first association relationship, which is used to indicate the association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set; the method also includes: the network device sends a second indication information, which is used to indicate the time domain position of the second time-frequency resource set, the second indication information and the index value of the first SSB are used to determine the time domain position of the second time-frequency resource set, and the first indication information and the time domain position of the second time-frequency resource set are used to determine the time domain position of the first time-frequency resource set.

[0054] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

[0055] In an optional implementation manner, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

[0056] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0057] In an optional implementation manner, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

[0058] In an optional implementation manner, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0059] It should be noted that there are many other specific implementation methods of the embodiments of the present application. Please refer to the specific implementation methods and beneficial effects of the first aspect for details, which will not be repeated here.

[0060] In a fourth aspect, the present application provides a control information transmission method, the method involving a terminal device and a network device. The network device transmits first indication information, the first indication information being used to indicate whether there is repeated transmission of first control information; when the first indication information indicates that there is repeated transmission of the first control information, the network device transmits the first control information on a first time-frequency resource set and a second time-frequency resource set, respectively, where the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are determined based on a first table.

[0061] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0062] In an optional embodiment, the first indication information is located in a first message, and the first message also includes a main information block MIB carrying second indication information, and the second indication information is used to indicate the time domain position of the second time-frequency resource set; the second indication information, the index value of the first synchronization signal block SSB and the first table are used to determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0063] In an optional implementation, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0064] In an optional embodiment, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0065] In an optional embodiment, the first table includes:

[0066]

[0067] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0068] It should be noted that there are many other specific implementation methods of the embodiments of the present application. Please refer to the specific implementation methods and beneficial effects of the second aspect for details, which will not be repeated here.

[0069] In a fifth aspect, the present application provides a terminal device, the terminal device comprising:

[0070] A receiving module, configured to receive first indication information before the connected state, where the first indication information is used to indicate a first time-frequency resource set, and the first time-frequency resource set and the second time-frequency resource set are used to transmit first control information;

[0071] The receiving module is further configured to receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before the connection state.

[0072] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0073] In an optional implementation, the first indication information is used to indicate the time domain position of the first time-frequency resource set. The terminal device further includes a processing module, configured to determine the time domain position of the first time-frequency resource set according to the first indication information.

[0074] In an optional embodiment, the processing module is specifically used to determine the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first synchronization signal block SSB, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0075] In an optional implementation, the first indication information includes a first association relationship, where the first association relationship is used to indicate an association relationship between a time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set;

[0076] The processing module is specifically used to: determine the time domain position of the second time-frequency resource set based on the second indication information and the index value of the first SSB, the second indication information is used to indicate the time domain position of the second time-frequency resource set; determine the time domain position of the first time-frequency resource set based on the first indication information and the time domain position of the second time-frequency resource set.

[0077] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

[0078] In an optional implementation manner, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

[0079] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0080] In an optional implementation manner, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

[0081] In an optional implementation manner, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0082] It should be noted that there are many other specific implementation methods of the embodiments of the present application. Please refer to the specific implementation methods and beneficial effects of the first aspect for details, which will not be repeated here.

[0083] In a sixth aspect, the present application provides a terminal device, which includes: a receiving module and a processing module. The receiving module is used to receive first indication information before the connection state, and the first indication information is used to indicate whether there is repeated transmission of the first control information. The processing module is used to determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to the first table when the first indication information indicates that there is repeated transmission of the first control information. The receiving module is also used to receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before the connection state.

[0084] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0085] In an optional implementation, the first indication information is located in a first message, and the first message further includes a master information block (MIB) carrying second indication information, where the second indication information is used to indicate the time domain position of the second time-frequency resource set. The processing module is specifically configured to determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set based on the second indication information, an index value of the first synchronization signal block (SSB), and the first table.

[0086] In an optional implementation, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0087] In an optional embodiment, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0088] In an optional embodiment, the first table includes:

[0089]

[0090] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0091] It should be noted that there are many other specific implementation methods of the embodiments of the present application. Please refer to the specific implementation methods and beneficial effects of the second aspect for details, which will not be repeated here.

[0092] In a seventh aspect, the present application provides a network device, the network device comprising:

[0093] A sending module, configured to send first indication information, where the first indication information is used to indicate a first time-frequency resource set, where the first time-frequency resource set and the second time-frequency resource set are used to transmit first control information to a terminal device in a non-connected state;

[0094] The sending module is further configured to send the first control information on the first time-frequency resource set and the second time-frequency resource set respectively.

[0095] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0096] In an optional implementation, the first indication information is used to indicate the time domain position of the first time-frequency resource set.

[0097] In an optional embodiment, the first indication information and the index value of the first synchronization signal block SSB are used to determine the time domain position of the first time-frequency resource set, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0098] In an optional implementation, the first indication information includes a first association relationship, where the first association relationship is used to indicate an association relationship between a time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set;

[0099] The sending module is also used to send second indication information, where the second indication information is used to indicate the time domain position of the second time-frequency resource set. The second indication information and the index value of the first SSB are used to determine the time domain position of the second time-frequency resource set. The first indication information and the time domain position of the second time-frequency resource set are used to determine the time domain position of the first time-frequency resource set.

[0100] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

[0101] In an optional implementation manner, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

[0102] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0103] In an optional implementation manner, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

[0104] In an optional implementation manner, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0105] It should be noted that there are many other specific implementation methods of the embodiments of the present application. Please refer to the specific implementation methods and beneficial effects of the first aspect for details, which will not be repeated here.

[0106] In an eighth aspect, the present application provides a network device, the network device comprising:

[0107] a sending module, configured to send first indication information, where the first indication information is used to indicate whether there is repeated transmission of the first control information;

[0108] The sending module is also used to send the first control information on the first time-frequency resource set and the second time-frequency resource set respectively when the first indication information indicates that there is repeated transmission of the first control information, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are determined based on the first table.

[0109] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0110] In an optional embodiment, the first indication information is located in a first message, and the first message also includes a main information block MIB carrying second indication information, and the second indication information is used to indicate the time domain position of the second time-frequency resource set; the second indication information, the index value of the first synchronization signal block SSB and the first table are used to determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0111] In an optional implementation, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0112] In an optional embodiment, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0113] In an optional embodiment, the first table includes:

[0114]

[0115] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0116] It should be noted that there are many other specific implementation methods of the embodiments of the present application. Please refer to the specific implementation methods and beneficial effects of the second aspect for details, which will not be repeated here.

[0117] In a ninth aspect, an embodiment of the present application provides a communication device, which may be a terminal device in the aforementioned embodiment, or a chip within the terminal device. The communication device may include a processing module and a transceiver module. When the communication device is a terminal device, the processing module may be a processor, and the transceiver module may be a transceiver; the terminal device may further include a storage module, which may be a memory; the storage module is used to store instructions, and the processing module executes the instructions stored in the storage module to cause the terminal device to perform the method in the first aspect or any one of the first embodiments, or the method in the second aspect or any one of the second embodiments. When the communication device is a chip within the terminal device, the processing module may be a processor, and the transceiver module may be an input / output interface, a pin, or a circuit, etc.; the processing module executes the instructions stored in the storage module to cause the terminal device to perform the method in the first aspect or any one of the first embodiments, or the method in the second aspect or any one of the second embodiments. The storage module may be a storage module within the chip (e.g., a register, a cache, etc.), or a storage module within the terminal device located outside the chip (e.g., a read-only memory, a random access memory, etc.).

[0118] In a tenth aspect, an embodiment of the present application provides a communication device, which may be a network device in the aforementioned embodiment, or a chip within the network device. The communication device may include a processing module and a transceiver module. When the communication device is a network device, the processing module may be a processor, and the transceiver module may be a transceiver; the network device may further include a storage module, which may be a memory; the storage module is used to store instructions, and the processing module executes the instructions stored in the storage module to cause the network device to perform the method in the third aspect or any one of the third embodiments, or the method in the fourth aspect or any one of the fourth embodiments. When the communication device is a chip within the network device, the processing module may be a processor, and the transceiver module may be an input / output interface, pin, or circuit, etc.; the processing module executes the instructions stored in the storage module to cause the network device to perform the method in the third aspect or any one of the third embodiments, or the method in the fourth aspect or any one of the fourth embodiments. The storage module may be a storage module within the chip (e.g., a register, cache, etc.), or a storage module within the network device located outside the chip (e.g., a read-only memory, a random access memory, etc.).

[0119] In an eleventh aspect, the present application provides a communication device, which may be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled to a memory, which stores programs or instructions. When the program or instructions are executed by the processor, the communication device performs the method according to the first aspect or any embodiment of the first aspect, or the method according to the second aspect or any embodiment of the second aspect.

[0120] In a twelfth aspect, the present application provides a communication device, which may be an integrated circuit chip. The integrated circuit chip includes a processor. The processor is coupled to a memory, which is configured to store programs or instructions. When the program or instructions are executed by the processor, the communication device performs the method according to the third aspect or any embodiment of the third aspect, or the method according to the fourth aspect or any embodiment of the fourth aspect.

[0121] In the thirteenth aspect, an embodiment of the present application provides a computer program product comprising instructions, which, when run on a computer, enables the computer to execute the method described in the first, second, third and fourth aspects, as well as any one of the various embodiments of the aforementioned aspects.

[0122] In the fourteenth aspect, an embodiment of the present application provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enable the computer to execute the method described in any one of the various embodiments of the aforementioned first, second, third and fourth aspects, as well as the various embodiments of the aforementioned aspects.

[0123] In aspect fifteen, an embodiment of the present application provides a communication system, which includes the terminal device in the above-mentioned first aspect and any one of the embodiments of the first aspect, and the network device in the above-mentioned third aspect and any one of the embodiments of the third aspect; or, the communication system includes the terminal device in the above-mentioned second aspect and any one of the embodiments of the second aspect, and the network device in the above-mentioned fourth aspect and any one of the embodiments of the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0124] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application.

[0125] Figure 1 A schematic diagram of a scenario applicable to the control information sending (or receiving) method of this application;

[0126] Figure 2A A flow chart of a method for sending (or receiving) control information in this application;

[0127] Figure 2B Another flow chart of the method for sending (or receiving) control information in this application;

[0128] Figure 3 Another flow chart of the method for sending (or receiving) control information in this application;

[0129] Figure 4A A schematic diagram of the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set in this application;

[0130] Figure 4B This is another schematic diagram of the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set in this application;

[0131] Figure 5 Another flow chart of the method for sending (or receiving) control information in this application;

[0132] Figure 6 A schematic diagram of an embodiment of a communication device in this application;

[0133] Figure 7 This is a schematic diagram of another embodiment of the communication device in this application;

[0134] Figure 8 This is a schematic diagram of another embodiment of the communication device in this application;

[0135] Figure 9 This is a schematic diagram of another embodiment of the communication device in this application. DETAILED DESCRIPTION

[0136] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0137] The terms "first," "second," "third," "fourth," and the like (if any) in the specification and claims of this application and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0138] To facilitate understanding, some terms involved in the embodiments of this application are introduced below:

[0139] Time-frequency resource: refers to the physical resources that carry the channel. Generally, time-frequency resources can be represented by resource blocks (RBs) and resource elements (REs) according to the granularity of the division. Among them, one RB occupies one symbol in the time domain (for example, orthogonal frequency division multiplexing (OFDM) symbol) and 12 subcarriers in the frequency domain. One RE occupies one symbol in the time domain and one subcarrier in the frequency domain. One RB contains 12 REs.

[0140] Control resource set (CORESET): A set of time-frequency resources that carry control channels (e.g., PDCCH). Generally, the basic unit of a CORESET is a resource element group (REG), where one REG corresponds to one PRB on an OFDM symbol. The number of REGs in a CORESET is typically an integer multiple of six.

[0141] Search space (SS): refers to a set of candidate control channels. Generally, a set of candidate control channels of a given aggregation level is defined as a search space. Thus, a search space set may be a set of search spaces of multiple different aggregation levels.

[0142] A control channel element (CCE) may be composed of multiple resource element groups (REGs). For example, one REG is composed of one RB (i.e., 12 REs). Generally, different CCEs contain different numbers of REGs.

[0143] Demodulation Reference Signal (DMRS): refers to a reference signal used for demodulation of a control channel and / or a reference signal used for demodulation of a data channel in conventional technologies. Optionally, demodulation may include at least one of channel estimation, demodulation, and decoding.

[0144] Radio network temporary identifier: (RNTI), used to identify the terminal device. For example, in actual applications, the radio network temporary identifier can be used as a mask to scramble the cyclic redundancy check (CRC) bit sequence obtained according to the downlink control information (DCI) payload. The value of RNTI can be predefined by the standard or configured by high-level signaling. Optionally, different RNTIs can also distinguish the functions of different DCIs. For example, DCI scrambled with different RNTI values ​​can be used to indicate the time domain and / or frequency domain resources of the physical downlink shared channel (PDSCH) of different data types. For example, DCI scrambled by SI-RNTI is used to schedule PDSCH that carries system information; DCI scrambled by C-RNTI is used to schedule PDSCH exclusive to the terminal device.

[0145] The following first introduces the system architecture and application scenarios to which the control information sending (or receiving) method proposed in this application is adapted:

[0146] The control information sending (or receiving) method proposed in this application can be applied to 5GNR systems, the 6th generation mobile communication technology (6G) systems and subsequent evolutionary standards, and this application does not limit this.

[0147] like Figure 1 As shown, the system includes terminal device 01 and network device 02. When terminal device 01 accesses the network, terminal device 01 will first receive the SSB sent by network device 02. The PBCH in the SSB carries information indicating the time-frequency domain location of the time-frequency resource set where the physical downlink control channel (PDCCH) is located, and the PDCCH carries downlink control information (DCI) sent by network device 02 to terminal device 01. Then, terminal device 01 receives the PDCCH according to the instruction of the PBCH and obtains the DCI therein.

[0148] In conventional technology, the network device 02 may send an indication information indicating the time-frequency domain position of the control resource set to the terminal device 01. Then, the terminal device 01 determines the time-frequency domain position of the time-frequency resources of the monitoring control channel (for example, the downlink control channel PDCCH) based on the aforementioned indication information and other information, so that the terminal device 01 receives control information (for example, downlink control information DCI) on the time-frequency resources of the aforementioned control channel. In this process, the network device 02 only sends the control information to the terminal device 01 once and will not repeatedly send the control information to the terminal device 01. If the terminal device 01 does not correctly receive the aforementioned control information, it will affect the subsequent operations of the terminal device 01, for example, affecting the terminal device 01 to demodulate the data channel based on the control information.

[0149] In this regard, an embodiment of the present application provides a control information sending (or receiving) method and a related communication device, which increases time-frequency resources for repeatedly sending control information so that the terminal device can receive control information on at least two time-frequency resources, that is, the terminal device can receive at least two copies of control information. Since the network device increases the time-frequency resources for sending control information to the terminal device, the amount of control information that the terminal device may receive is increased, thereby improving the probability of the terminal device correctly receiving the control information. Specifically, the following text Figure 2A and Figure 2B The corresponding embodiments will be described in detail.

[0150] It should be noted that the terminal devices involved in this application include devices that provide voice and / or data connectivity to users. For example, it may include a handheld device with wireless connection function or a processing device connected to a wireless modem. The terminal device can communicate with a core network (for example, a 5G core network (5th generation core, 5GC)) via a radio access network (RAN) and can exchange voice and / or data with the RAN. The terminal device may also be referred to as a terminal (Terminal), user equipment (UE), wireless terminal device, mobile terminal (MT) device, subscriber unit, subscriber station, mobile station (MS), mobile station (mobile), remote station (remote station), access point (AP), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), or user equipment (user device), etc. In addition, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0151] It should be understood that the terminal device in the embodiments of the present application can be any of the above-mentioned devices or chips, and the specific details are not limited here. Whether as a device or a chip, the terminal device can be manufactured, sold, or used as an independent product. In this embodiment and subsequent embodiments, only the terminal device is used as an example.

[0152] In addition, the network device involved in the present application can be any device with wireless transceiver functions, which can be used to be responsible for air interface-related functions, such as radio link maintenance functions, radio resource management functions, and partial mobility management functions. Among them, the radio link maintenance function is used to maintain the radio link with the terminal device, and is responsible for the protocol conversion between the radio link data and the Internet Protocol (IP) data; the radio resource management function may include functions such as the establishment and release of the radio link, the scheduling and allocation of radio resources; and some mobility management functions may include configuring the terminal device to perform measurements, evaluating the quality of the terminal device's radio link, and deciding on the handover of the terminal device between cells. Exemplarily, the network device may be an access network device (radio access network, RAN) currently providing services to the terminal device. For example, the network device may include a next generation node B (gNB) in a 5G new radio (NR) system, or may also include a centralized unit (CU) and a distributed unit (DU) in a cloud access network (CloudRAN) system. The previous network device may also include a node in a 6G system (e.g., xNodeB). The specific details are not limited here.

[0153] It should be understood that the network device in the embodiments of the present application can be any of the aforementioned devices or chips in the aforementioned devices, without limitation herein. Whether as a device or a chip, the network device can be manufactured, sold, or used as an independent product. In this embodiment and subsequent embodiments, only the network device is used as an example.

[0154] The following combination Figure 2A A main process of a method for sending (or receiving) control information proposed in this application is introduced. In this method, before the terminal device enters the connected state, the terminal device and the network device can perform the following steps:

[0155] In step 201a, the network device sends first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information from the network device.

[0156] The first indication information is used to indicate a first time-frequency resource set, and the first time-frequency resource set is used to transmit first control information. Optionally, the first control information is control information for scheduling a system information block SIB1; or the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0157] The first time-frequency resource set is used to transmit the first control information. It can be understood that the first time-frequency resource set includes multiple time-frequency resources, and the first time-frequency resource among the multiple time-frequency resources carries the control channel (for example, downlink control channel PDCCH) for transmitting the first control information. The first time-frequency resource can be a time-frequency resource, for example, a resource block RB or a resource element RE; the first time-frequency resource can also be multiple time-frequency resources, for example, multiple resource blocks RB or multiple resource elements RE. The specific details are not limited here.

[0158] In addition, the network device also configures a second time-frequency resource set for the terminal device in accordance with traditional technology, and the second time-frequency resource set is also a time-frequency resource for transmitting the first control information. It can also be understood that the second time-frequency resource set contains multiple time-frequency resources, and one of the multiple time-frequency resources (hereinafter referred to as the second time-frequency resource) carries the control channel (for example, the downlink control channel PDCCH) for transmitting the first control information. Therefore, in this embodiment, the aforementioned first time-frequency resource set can be understood as a time-frequency resource set that the network device additionally indicates to the terminal device for repeated transmission of the first control information. The terminal device may receive the first control information on the first time-frequency resource of the first time-frequency resource set, and may also receive the first control information on the second time-frequency resource of the second time-frequency resource set.

[0159] In this embodiment, the first indication information may be implemented in various ways:

[0160] In an optional implementation, the aforementioned first indication information can indirectly indicate the time domain position of the first time-frequency resource set.

[0161] In this embodiment, the aforementioned first indication information may include a first association relationship, and the first association relationship is used to indicate the association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set. That is to say, the first indication information can indirectly indicate the time domain position of the first time-frequency resource set by indicating the association relationship between the time domain position of the first time-frequency resource set and the time domain position of other time-frequency resource sets (for example, the time domain position of the second time-frequency resource set). If the terminal device is able to obtain the time domain position of the second time-frequency resource set, the terminal device can determine the time domain position of the aforementioned first time-frequency resource set based on the aforementioned first association relationship and the time domain position of the second time-frequency resource set.

[0162] In this implementation, the terminal device can preliminarily determine the time-frequency domain position of the first time-frequency resource set based on the first indication information, which narrows the range of the terminal device monitoring control information and is conducive to reducing the load of the terminal device.

[0163] In another optional implementation, the aforementioned first indication information can directly indicate the time domain position of the first time-frequency resource set.

[0164] In this embodiment, the aforementioned first indication information does not include the first association relationship, but directly indicates the time domain position of the first time-frequency resource set. At this time, the terminal device does not need to first determine the time domain position of the second time-frequency resource set and then determine the time domain position of the first time-frequency resource set. At this time, the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first SSB. Specifically, the way in which the terminal device determines the time domain position of the first time-frequency resource set is similar to the way in which the terminal device determines the time domain position of the second time-frequency resource based on the second indication information and the index value of the first SSB in the traditional technology. For details, please refer to the relevant introduction in step 302a below, which will not be repeated here.

[0165] In addition, the aforementioned first association relationship can be implemented in the following ways:

[0166] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain. Optionally, the first time-frequency resource set and the second time-frequency resource set are located in consecutive and different symbols within the time slot in the time domain. The consecutive and different symbols refer to two adjacent symbols, or two symbols with consecutive index values.

[0167] In this embodiment, it is proposed that the first time-frequency resource set and the second time-frequency resource set are respectively located in the same time slot in the time domain. In the process of the terminal device monitoring the control channel in the time slot indicated by the time domain position of the second time-frequency resource set, the terminal device can receive at least two first control information on several consecutive symbols in the time slot, without the need for the terminal device to additionally monitor the control channels of other time slots (for example, time slots other than the time domain position of the second time-frequency resource set), which is beneficial to saving the time required for the terminal device to obtain the first control information and is beneficial to improving the success rate of the terminal device in receiving the first control information.

[0168] In another optional embodiment, the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain. Optionally, the time slot in which the first time-frequency resource set is located is adjacent to the time slot in which the second time-frequency resource set is located, that is, the index value of the time slot in which the first time-frequency resource set is located is continuous with the index value of the time slot in which the second time-frequency resource set is located. Optionally, the index value of the symbol in the time slot in which the first time-frequency resource set is located is the same as the index value of the symbol in the time slot in which the second time-frequency resource set is located.

[0169] In this embodiment, it is proposed that the first time-frequency resource set and the second time-frequency resource set are respectively located in continuous and different time slots in the time domain. The terminal device can receive at least two first control information in continuous and different time slots. The terminal device does not need to monitor the control channel in discontinuous time slots (for example, in time slots with an index value of 0 and time slots with an index value of 3), which is beneficial for the terminal device to obtain the first control information in a relatively short time, and is beneficial to improving the success rate of the terminal device in receiving the first control information.

[0170] Optionally, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0171] In this embodiment, since the time slot is a concept in the time domain, the time slot in which the first time-frequency resource set is located is located before the time slot in which the second time-frequency resource set is located. This means that the network device can send the first control information to the terminal device on the first time-frequency resource set earlier than the time at which the first control information is sent to the terminal device on the second time-frequency resource set. Therefore, compared to a solution in which the first control information is received only from the second time-frequency resource set, the terminal device may receive the first control information earlier, which helps to shorten the time required for the terminal device to receive the first control information.

[0172] Step 202a: The terminal device determines the time domain position of the first time-frequency resource set according to the first indication information.

[0173] Specifically, the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first synchronization signal block SSB, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB. Since the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB. Therefore, the time domain position of the first time-frequency resource set is the same as or similar to the time domain position of the second time-frequency resource set, then the time domain position of the first time-frequency resource in the first time-frequency resource set and the time domain position of the second time-frequency resource in the second time-frequency resource set are also similar. Therefore, the terminal device may receive the first control information from the first time-frequency resource of the first time-frequency resource set and the second time-frequency resource of the second time-frequency resource set respectively within a shorter time range (for example, one time slot or two adjacent time slots), that is, the terminal device may receive at least two copies of the first control information within a shorter time range. Therefore, it is beneficial to reduce the delay of the terminal device in receiving the first control information, and is also beneficial to improve the efficiency of the terminal device in successfully receiving the first control information.

[0174] In an optional embodiment, the first indication information includes the aforementioned first association relationship. In this case, the terminal device first determines the time domain position of the second time-frequency resource set, and then determines the time domain position of the first time-frequency resource set based on the time domain position of the second time-frequency resource set and the first association relationship.

[0175] Optionally, the terminal device first determines the time domain position of the second time-frequency resource set based on the second indication information and the index value of the first SSB, and then determines the time domain position of the first time-frequency resource set based on the first indication information and the time domain position of the second time-frequency resource set. The second indication information is used to indicate the time domain position of the second time-frequency resource set.

[0176] In this embodiment, the terminal device only needs to query the reference table (for example, Table 13-11 or Table 13-12 in the 3GPP protocol) and perform calculations in the process of determining the second time-frequency resource set. When determining the time domain position of the first time-frequency resource set, the time domain position of the first time-frequency resource set can be directly determined based on the time domain position of the second time-frequency resource set and the first association relationship, without the need to query the table again for calculation. This is beneficial to reducing the complexity of the terminal device in determining the time domain position of the first time-frequency resource, and is also beneficial for the terminal device to quickly determine the time domain position of the first time-frequency resource and reduce the delay in determining the time domain position of the first time-frequency resource.

[0177] In another optional implementation, the first indication information does not include the aforementioned first association relationship. In this case, the terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first SSB.

[0178] It should be understood that, in actual applications, the terminal device may use any of the aforementioned implementation methods to determine the time domain position of the first time-frequency resource set.

[0179] In step 203a, the network device sends first control information to the terminal device on the first time-frequency resource set and the second time-frequency resource set respectively; correspondingly, the terminal device receives the first control information on the first time-frequency resource set and the second time-frequency resource set respectively.

[0180] Specifically, after the terminal device determines the time domain position of the second time-frequency resource set, since the second time-frequency resource set contains multiple time-frequency resources, the terminal device monitors the control channel at the position of each time-frequency resource in the multiple time-frequency resources, thereby receiving the first control information sent by the network device on the second time-frequency resource.

[0181] Specifically, after the terminal device determines the time domain position of the first time-frequency resource set, since the first time-frequency resource set contains multiple time-frequency resources, the terminal device monitors the control channel at the position of each time-frequency resource in the multiple time-frequency resources, thereby receiving the first control information sent by the network device on the first time-frequency resource.

[0182] It should be understood that the time domain position of the first time-frequency resource may be before the time domain position of the second time-frequency resource, and the time domain position of the second time-frequency resource may also be before the time domain position of the first time-frequency resource. Therefore, the terminal device may first receive the first control information on the first time-frequency resource in the first time-frequency resource set, and then receive repeated first control information on the second time-frequency resource in the second time-frequency resource set; the terminal device may also first receive the first control information on the second time-frequency resource in the second time-frequency resource set, and then receive repeated first control information on the first time-frequency resource in the first time-frequency resource set. The specifics are not limited here.

[0183] In this embodiment, the network device indicates another time-frequency resource set (i.e., the first time-frequency resource set) in addition to the second time-frequency resource set to the terminal device through the first indication information, and both the first time-frequency resource set and the second time-frequency resource set can be used to transmit the first control information. Therefore, the terminal device can receive two copies of the first control information on different time-frequency resources in different time-frequency resource sets. Compared with traditional technologies, terminal devices in traditional technologies can only receive one copy of the first control information from the second time-frequency resource in the second time-frequency resource set. Therefore, the solution proposed in this embodiment can effectively improve the probability of the terminal device correctly receiving the first control information.

[0184] The following combination Figure 2B Another main process of the control information sending (or receiving) method proposed in this application is introduced. In this method, before the terminal device enters the connected state, the terminal device and the network device can perform the following steps:

[0185] Step 201b: The network device sends first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information from the network device.

[0186] The first indication information is used to indicate whether there is repeated transmission of the first control information. Optionally, the first control information is control information for scheduling the system information block SIB1; or the first control information is control information for scrambling the system message radio network temporary identifier SI-RNTI.

[0187] Among them, the first indication information is used to indicate whether there is repeated transmission of the first control information. It can also be understood that the first indication information is used to indicate whether the first control information needs to be repeatedly transmitted. It can also be understood that the first indication information is used to indicate whether there is a time domain resource set (for example, the first time-frequency resource set) for repeated transmission of the first control information. It can also be understood that the first indication information is used to indicate whether there is a time domain resource (for example, the first time-frequency resource in the first time-frequency resource set) for repeated transmission of the first control information. The specific details are not limited here.

[0188] The first time-frequency resource set is used to transmit the first control information. It can be understood that the first time-frequency resource set includes multiple time-frequency resources, and the first time-frequency resource among the multiple time-frequency resources carries the control channel (for example, downlink control channel PDCCH) for transmitting the first control information. The first time-frequency resource can be a time-frequency resource, for example, a resource block RB or a resource element RE; the first time-frequency resource can also be multiple time-frequency resources, for example, multiple resource blocks RB or multiple resource elements RE. The specific details are not limited here.

[0189] In addition, the network device also configures a second time-frequency resource set for the terminal device in accordance with traditional technology, and the second time-frequency resource set is also a time-frequency resource for transmitting the first control information. It can also be understood that the second time-frequency resource set contains multiple time-frequency resources, and one of the multiple time-frequency resources (hereinafter referred to as the second time-frequency resource) carries the control channel (for example, the downlink control channel PDCCH) for transmitting the first control information. Therefore, in this embodiment, the aforementioned first time-frequency resource set can be understood as a time-frequency resource set that the network device additionally indicates to the terminal device for repeated transmission of the first control information. The terminal device may receive the first control information on the first time-frequency resource of the first time-frequency resource set, and may also receive the first control information on the second time-frequency resource of the second time-frequency resource set.

[0190] In this embodiment, the first indication information can take two different values ​​to indicate the presence or absence of repeated transmission of the first control information. For example, one value is used to indicate the absence of repeated transmission of the first control information, and the other value is used to indicate the presence of repeated transmission of the first control information. Exemplarily, the two values ​​of the first indication information are 0 and 1, respectively. When the first indication information is 0, it indicates that there is no repeated transmission of the first control information, that is, the network device will not repeatedly send control information to the terminal device on the first time-frequency resource in the first time-frequency resource set. The terminal device can only monitor the first control information on the second time-frequency resource set, and not on the first time-frequency resource set. When the first indication information is 1, it indicates that there is repeated transmission of the first control information. That is, the network device will repeatedly send the first control information to the terminal device on the first time-frequency resource in the first time-frequency resource set. The terminal device can monitor the first control information on both the first time-frequency resource set and the second time-frequency resource set. It should be understood that the above example is only for the convenience of understanding this solution. It can also be that when the first indication information is 1, it indicates that the first time-frequency resource set does not exist; when the first indication information is 0, it indicates that the first time-frequency resource set exists. In addition, other numbers can also be used to distinguish between the two states of existence and non-existence, which are not limited here.

[0191] Step 202b: When the first indication information indicates that there is repeated transmission of the first control information, the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to the first table.

[0192] Among them, the first table is a newly defined reference table, which adds some parameter values ​​on the basis of the reference table in the traditional technology (i.e., Table 13-11 in Protocol 38.213 or Table 13-12 in Protocol 38.213), so that the first table not only contains parameters for determining the time-frequency domain position of the second time-frequency resource set, but also contains parameters for determining the time-frequency position of the first time-frequency resource set.

[0193] Optionally, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set. The index value of the first symbol in the monitoring window of the second time-frequency resource set can be understood as a parameter for determining the time-frequency domain position of the second time-frequency resource set; the index value of the first symbol in the monitoring window of the first time-frequency resource set can be understood as a parameter for determining the time-frequency domain position of the first time-frequency resource set.

[0194] Optionally, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set. At this time, the terminal device can obtain two index values ​​about the first symbol (i.e., the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set) in one table lookup operation by querying the aforementioned first table based on the first index value. In conventional technology, the first index value determined based on the second indication information can only query one index value about the first symbol (i.e., the index value of the first symbol in the monitoring window of the second time-frequency resource set). Therefore, the solution proposed in this embodiment is conducive to reducing the number of times the terminal device queries the reference table, and is conducive to the terminal device quickly determining the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0195] Exemplarily, the first table includes:

[0196]

[0197] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB. For the introduction of the first table, please refer to the following text for details. Figure 5 The corresponding embodiments are not described in detail here.

[0198] In a possible implementation, the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set based on the second indication information, the index value of the first synchronization signal block SSB and the first table.

[0199] Specifically, the terminal device can determine an index value based on the second indication information. The terminal device uses the index value to query the first table to obtain parameters for calculating the time domain position of the first time-frequency resource set and parameters for calculating the time domain position of the second time-frequency resource set. Then, the terminal device determines the time domain position of the first time-frequency resource set based on the parameters for calculating the time domain position of the first time-frequency resource set and the index value of the first SSB, and determines the time domain position of the second time-frequency resource set based on the parameters for calculating the time domain position of the second time-frequency resource set and the index value of the first SSB. For details, please refer to the following text Figure 5 Corresponding to the relevant introduction in the embodiment.

[0200] Step 203b: The network device sends first control information to the terminal device on the first time-frequency resource set and the second time-frequency resource set respectively; correspondingly, the terminal device receives the first control information on the first time-frequency resource set and the second time-frequency resource set respectively.

[0201] In this embodiment, step 203b is similar to the aforementioned step 203a. Please refer to the relevant introduction in the aforementioned step 203a for details, which will not be repeated here.

[0202] In this embodiment, the terminal device may receive first indication information indicating whether to repeatedly transmit the first control information before entering the connected state. When the first indication information indicates that the first control information needs to be repeatedly transmitted, the terminal device will query a newly defined table (i.e., the first table). The terminal device can determine two time-frequency resource sets (i.e., the first time-frequency resource set and the second time-frequency resource set) for transmitting the first control information based on the first table. Then, the terminal device receives the first control information on the aforementioned first time-frequency resource set and the second time-frequency resource set. In other words, the network device will not only send the first control information to the terminal device on the first time-frequency resource set, but also send the first control information to the terminal device on the second time-frequency resource set. Therefore, the terminal device may receive the first control information on the first time-frequency resource set, or may receive the first control information on the second time-frequency resource set. Compared to the solution in the conventional technology in which a terminal device in the unconnected state only receives the first control information on the second time-frequency resource set, the terminal device in the solution of the present application can receive the first control information through at least two time-frequency resource sets, and the terminal device can receive at least two copies of the first control information. Therefore, the probability of the terminal device correctly receiving the first control information can be increased.

[0203] The following combination Figure 3 The control information sending (or receiving) method proposed in this application is further introduced. In this method, the first indication information can not only reflect whether the first time-frequency resource exists, but also directly or indirectly indicate the time-frequency domain position of the first time-frequency resource set to which the first time-frequency resource belongs. Specifically, the terminal device and the network device mainly perform the following steps:

[0204] Step 301a: The network device sends second indication information to the terminal device; correspondingly, the terminal device receives the second indication information from the network device.

[0205] Among them, the second indication information is used to indicate the time-frequency domain position of the second time-frequency resource set. The second time-frequency resource set includes multiple time-frequency resources. The multiple time-frequency resources include a second time-frequency resource. The second time-frequency resource is a time-frequency resource configured by the network device for the terminal device according to traditional technology for transmitting control information (for example, the aforementioned first control information). It can also be understood that the aforementioned second time-frequency resource is used for the network device to send control information (for example, the first control information) to the terminal device. It can also be understood that the aforementioned second time-frequency resource is a time-frequency resource for carrying a control channel, and the network device can send control information (for example, the first control information) to the terminal device on the control channel.

[0206] In addition, the aforementioned second indication information may be included in a physical broadcast channel (PBCH), that is, the network device sends the aforementioned second indication information to the terminal device through the aforementioned physical broadcast channel PBCH. Optionally, the aforementioned physical broadcast channel PBCH may be a periodic broadcast PBCH. Exemplarily, the terminal device may periodically blindly detect a synchronization signal / broadcast channel block (SS / PBCH block, SSB) to obtain the PBCH in the SSB, and then obtain the aforementioned second indication information from the aforementioned PBCH.

[0207] Exemplarily, the second time-frequency resource may be a time-frequency resource carrying a physical downlink control channel (PDCCH). The control information may be downlink control information (DCI) or sidelink control information. The second indication information may be pdcch-ConfigSIB1 in the master information block (MIB). Specific details are not limited here.

[0208] Exemplarily, the aforementioned second time-frequency resource set can be the time-frequency resource set occupied by the physical downlink control channel PDCCH (Type0-PDCCH) of type 0, that is, the time-frequency domain position of the second time-frequency resource set is the time-frequency domain position of the time-frequency resource set occupied by the PDCCH of type 0; the second time-frequency resource set can also be the time-frequency resource set occupied by the physical downlink control channel PDCCH (Type0-PDCCH) of type 1, that is, the time-frequency domain position of the second time-frequency resource set is the time-frequency domain position of the time-frequency resource set occupied by the PDCCH of type 1, which is not limited here. Among them, the time-frequency resource set can be specifically expressed as a control resource set CORESET, or as a set of time-frequency resources carrying a control channel candidate set (i.e., PDCCH candidates), or as other types of time-frequency resource units, which are not limited here.

[0209] Step 301b: The network device sends first indication information to the terminal device; correspondingly, the terminal device receives the first indication information from the network device.

[0210] Among them, the first indication information can reflect whether the first time-frequency resource exists. Among them, the existence of the first time-frequency resource can be manifested as the first indication information indicating the time-frequency domain position of the first time-frequency resource set to which the first time-frequency resource belongs; the non-existence of the first time-frequency resource can be manifested as the first indication information indicating that the first time-frequency resource set does not exist, or the first indication information does not indicate the time-frequency domain position of the first time-frequency resource set (nor the time-frequency domain position of other time-frequency resource sets). The first time-frequency resource is also a time-frequency resource for transmitting control information, and the first time-frequency resource and the aforementioned second time-frequency resource are used to transmit the same control information. The following text uses the example that both the aforementioned first time-frequency resource and the second time-frequency resource can be used to transmit the first control information. Compared with the aforementioned second time-frequency resource, the first time-frequency resource can be understood as a time-frequency resource that the network device additionally configures for the terminal device for repeated transmission of the first control information. The aforementioned first indication information can be understood as a time-frequency resource for indicating whether the network device has configured the terminal device with a time-frequency resource for repeated transmission of the first control information.

[0211] Generally, when a network device configures time-frequency resources for transmitting control information for a terminal device, it can also be understood that when the network device configures time-frequency resources for carrying a control channel for a terminal device, the network device will indicate a time-frequency resource set to the terminal device, and the time-frequency resource set contains the aforementioned time-frequency resources for transmitting control information (or time-frequency resources for carrying a control channel). Then, the terminal device monitors the control channel on each time-frequency resource in the aforementioned time-frequency resource set, so that control information (for example, the aforementioned first control information) is received in a certain control channel among the multiple control channels monitored. Therefore, the aforementioned first indication information can also be understood as being able to reflect whether there is a first time-frequency resource set. Of course, when the first indication information indicates the time-frequency domain position of the first time-frequency resource set, it also implicitly indicates that there is a first time-frequency resource in the first time-frequency resource set. When the first indication information indicates that there is no first time-frequency resource set, it also implicitly indicates that there is no first time-frequency resource.

[0212] In actual applications, the first indication information can take two different values ​​to indicate the presence or absence of the first time-frequency resource set. For example, one value is used to indicate the absence of the aforementioned first time-frequency resource set, and the other value is used to indicate the presence of the aforementioned first time-frequency resource set. Exemplarily, the two values ​​of the first indication information are 0 and 1 respectively. When the first indication information is 0, it means that the aforementioned first time-frequency resource set does not exist, that is, the network device will not repeatedly send control information to the terminal device on the first time-frequency resource in the first time-frequency resource set. The terminal device can only monitor the first control information on the second time-frequency resource set, and not on the first time-frequency resource set; when the first indication information is 1, it means that the aforementioned first time-frequency resource set exists, that is, the network device will repeatedly send the first control information to the terminal device on the first time-frequency resource in the first time-frequency resource set. The terminal device can monitor the first control information on both the first time-frequency resource set and the second time-frequency resource set. It should be understood that the above example is only for the convenience of understanding this solution. It can also be that when the first indication information is 1, it means that the first time-frequency resource set does not exist; when the first indication information is 0, it means that the first time-frequency resource set exists. In addition, other numbers can also be used to distinguish between the two states of existence and non-existence, which are not limited here.

[0213] It should be understood that before the network device sends the first indication information to the terminal device, the network device will determine, based on one or more relevant factors, whether the first indication information sent to the terminal device is used to indicate the presence of the first time-frequency resource set or to indicate the absence of the first time-frequency resource set; this can also be understood as whether the network device configures the aforementioned first time-frequency resource set for the terminal device. The aforementioned relevant factors include but are not limited to the distance between the network device and the terminal device or the communication quality between the network device and the terminal device.

[0214] In an optional embodiment, the network device may obtain the location of the terminal device during the process of the terminal device accessing the network and during the subsequent information exchange process with the terminal device. Then, when the distance between the terminal device and the network device is greater than or equal to a first preset threshold, the network device sends first indication information to the terminal device to indicate the existence of the first time-frequency resource set; when the distance between the terminal device and the network device is less than the first preset threshold, the first indication information sent by the network device to the terminal device may indicate the absence of the first time-frequency resource set.

[0215] In another optional embodiment, the network device may obtain the communication quality between the network device and the terminal device during information exchange with the terminal device. Then, when the communication quality between the network device and the terminal device is lower than or equal to a second preset threshold, the first indication information sent by the network device to the terminal device indicates the existence of the first time-frequency resource set; when the communication quality between the network device and the terminal device is higher than the second preset threshold, the first indication information sent by the network device to the terminal device may indicate the non-existence of the first time-frequency resource set.

[0216] It should be understood that the above examples are only to prove the feasibility of this solution. The network device can also combine other factors to determine the indication content of the first indication information sent to the terminal, which will not be repeated here.

[0217] It should also be understood that when the first indication information indicates the existence of the first time-frequency resource set, that is, the existence of first time-frequency resources for the network device to repeatedly send control information to the terminal device, the terminal device will execute steps 302b and 304b, and the network device will also execute step 303b. When the first indication information indicates the absence of the first time-frequency resource set, that is, the existence of first time-frequency resources for the network device to repeatedly send control information to the terminal device, the terminal device will not execute steps 302b and 304b, and the network device will not execute step 303b.

[0218] In addition, the aforementioned first indication information can not only reflect whether the first time-frequency resource set exists, but also indicate the time-frequency domain position of the first time-frequency resource set.

[0219] Specifically, the first indication information can indicate the time-frequency domain position of the first time-frequency resource set relative to the time-frequency domain position of the second time-frequency resource set, that is, the association relationship between the time-frequency domain position of the first time-frequency resource set and the time-frequency domain position of the second time-frequency resource set (hereinafter referred to as the first association relationship). It can also be understood that the aforementioned first indication information indirectly indicates the time-frequency domain position of the aforementioned first time-frequency resource set by indicating the aforementioned first association relationship.

[0220] Specifically, the aforementioned first association relationship can be implemented in a variety of different ways:

[0221] In one possible implementation, the first association relationship is used to indicate that the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain. Optionally, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the same time slot in the time domain. The aforementioned consecutive and different symbols represent two adjacent symbols, or two symbols with consecutive index values. For example, the first time-frequency resource set and the second time-frequency resource set are respectively located in the symbol with an index value of 0 in a certain time slot and the symbol with an index value of 1 in the time slot. For another example, the first time-frequency resource set and the second time-frequency resource set are respectively located in the symbol with an index value of 7 in a certain time slot and the symbol with an index value of 8 in the time slot. Of course, in the same time slot, the symbol where the first time-frequency resource set is located can be located before or after the symbol where the second time-frequency resource set is located. For example, the first time-frequency resource set may be located in a symbol with an index value of 1 in the aforementioned time slot, while the second time-frequency resource set may be located in a symbol with an index value of 0 in the aforementioned time slot; or the first time-frequency resource set may be located in a symbol with an index value of 0 in the aforementioned time slot, while the second time-frequency resource set may be located in a symbol with an index value of 1 in the aforementioned time slot. Specific limitations are not given here.

[0222] For ease of understanding, Figure 4A For example. Figure 4A This is a schematic diagram of the distribution of the first time-frequency resource set and the second time-frequency resource set in the time domain. It lists the distribution of time-frequency resources on two time slots corresponding to the index value of the same SSB. The index value of SSB is 0 (i.e., i=0), which corresponds to the time slot with an index value of 0 (referred to as time slot 0) and the time slot with an index value of 1 (referred to as time slot 1). Time slot 0 contains both time-frequency resources belonging to the first time-frequency resource set and time-frequency resources belonging to the second time-frequency resource set. Similarly, time slot 1 contains both time-frequency resources belonging to the first time-frequency resource set and time-frequency resources belonging to the second time-frequency resource set. In time slot 0, the time-frequency resources belonging to the second time-frequency resource set are in the first symbol of time slot 0 (i.e., the symbol with an index value of 0), and the time-frequency resources belonging to the first time-frequency resource set are in the second symbol of time slot 0 (i.e., the symbol with an index value of 1). In time slot 1, the time-frequency resources belonging to the second time-frequency resource set are in the first symbol of time slot 1 (i.e., the symbol with index value 0), and the time-frequency resources belonging to the first time-frequency resource set are in the second symbol of time slot 1 (i.e., the symbol with index value 1).

[0223] In this embodiment, it is proposed that the first time-frequency resource set and the second time-frequency resource set are respectively located in the same time slot in the time domain. In the process of the terminal device monitoring the control channel in the time slot indicated by the time domain position of the second time-frequency resource set, the terminal device can receive at least two first control information on several consecutive symbols in the time slot, without the need for the terminal device to additionally monitor the control channels of other time slots (for example, time slots other than the time domain position of the second time-frequency resource set), which is beneficial to saving the time required for the terminal device to obtain the first control information and is beneficial to improving the success rate of the terminal device in receiving the first control information.

[0224] In another possible implementation, the first association relationship is used to indicate that the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain. Optionally, the time slot where the aforementioned first time-frequency resource set is located is adjacent to the time slot where the second time-frequency resource set is located, that is, the index value of the time slot where the first time-frequency resource set is located is continuous with the index value of the time slot where the second time-frequency resource set is located. For example, the first time-frequency resource set and the second time-frequency resource set are respectively located in the time slot with an index value of 0 and the time slot with an index value of 1. The first time-frequency resource set is located in the time slot with an index value of 0, and the second time-frequency resource set is located in the time slot with an index value of 1; or, the first time-frequency resource set is located in the time slot with an index value of 1, and the second time-frequency resource set is located in the time slot with an index value of 0.

[0225] Optionally, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located. For example, the first time-frequency resource set is located in the time slot with an index value of 0, and the second time-frequency resource set is located in the time slot with an index value of 1. In this case, the network device can send the first control information to the terminal device on the first time-frequency resource set earlier than the time when the first control information is sent to the terminal device on the second time-frequency resource set. Therefore, compared with the solution of receiving the first control information only from the second time-frequency resource set, the terminal device may receive the first control information earlier, which is conducive to shortening the time required for the terminal device to receive the first control information.

[0226] Optionally, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located. For example, the first time-frequency resource set is located in the first symbol (i.e., the symbol with an index value of 0) in the time slot with an index value of 0, and the second time-frequency resource set is located in the first symbol (i.e., the symbol with an index value of 0) in the time slot with an index value of 1.

[0227] For ease of understanding, Figure 4B For example. Figure 4BThis is a schematic diagram of the distribution of the first time-frequency resource set and the second time-frequency resource set in the time domain. The distribution of time-frequency resources on the two time slots corresponding to the index value of the same SSB is listed. The index value of SSB is 0 (i.e., i=0), which corresponds to the time slot with an index value of 0 (referred to as time slot 0) and the time slot with an index value of 1 (referred to as time slot 1). The time-frequency resources belonging to the first time-frequency resource set are located in time slot 0 and occupy the first two symbols in time slot 0 (i.e., symbol 0 and symbol 1). The time-frequency resources belonging to the second time-frequency resource set are located in time slot 1 and occupy the first two symbols in time slot 1 (i.e., symbol 0 and symbol 1).

[0228] In this embodiment, it is proposed that the first time-frequency resource set and the second time-frequency resource set are respectively located in continuous and different time slots in the time domain. The terminal device can receive at least two first control information in continuous and different time slots. The terminal device does not need to monitor the control channel in discontinuous time slots (for example, in time slots with an index value of 0 and time slots with an index value of 3), which is beneficial for the terminal device to obtain the first control information in a relatively short time, and is beneficial to improving the success rate of the terminal device in receiving the first control information.

[0229] In practical applications, the first indication information can be implemented using any one or more of the aforementioned implementation methods, and the first indication information can indicate multiple different meanings through different values. Specifically, one of the values ​​is used to indicate that the first time-frequency resource set does not exist, another value is used to indicate that the first time-frequency resource set and the second time-frequency resource set are respectively located on continuous and different symbols in the same time slot in the time domain, and another value is used to indicate that the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain. Exemplarily, the values ​​and meanings of the first indication information can be shown in the following Table 1-1:

[0230] Table 1-1

[0231]

[0232] As shown in Table 1-1, the values ​​of the first indication information are 0, 1, and 2. When the first indication information value is 0, it indicates that the first time-frequency resource set does not exist; when the first indication information value is 1, it indicates that the first time-frequency resource set and the second time-frequency resource set are respectively located in consecutive and different symbols in the same time slot in the time domain; when the first indication information value is 2, it indicates that the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0233] In this embodiment, because the first indication information sent by the network device can not only indicate whether the first time-frequency resource set exists, but also indicate the location of the first time-frequency resource set, the terminal device can preliminarily determine the time-frequency domain location of the first time-frequency resource set based on the first indication information, thereby narrowing the range of the terminal device's monitoring of control information and facilitating reduced load on the terminal device.

[0234] Optionally, the first indication information can also be used to indicate the number of symbols occupied by the first time-frequency resource set in the time domain within a time period. At this time, the first indication information can also indicate multiple different meanings through different values. Specifically, one value is used to indicate that the first time-frequency resource set does not exist; another value is used to indicate that the first time-frequency resource set exists, and within a time period, the number of symbols occupied by the first time-frequency resource set in the time domain is 1; another value is used to indicate that the first time-frequency resource set exists, and within a time period, the number of symbols occupied by the first time-frequency resource set in the time domain is 2; another value is used to indicate that the first time-frequency resource set exists, and within a time period, the number of symbols occupied by the first time-frequency resource set in the time domain is 3, etc. Among them, the length of a time period (referring to the number of symbols occupied by the first time-frequency resource set indicated by the first indication information in the time domain) includes but is not limited to a transmission cycle of control information, a time slot, multiple discontinuous time slots within a transmission cycle of control information, multiple continuous time slots, a subframe, multiple continuous subframes or multiple discontinuous subframes within a transmission cycle of control information, etc., and is not specifically limited here. It should be understood that the number of symbols occupied by the first time-frequency resource set indicated by the first indication information in the embodiment of the present application in the time domain refers to the number of symbols occupied by the first time-frequency resource set in the time domain within a time period. To simplify the description, the number of symbols occupied by the first time-frequency resource set in the time domain will no longer be specifically pointed out in the subsequent description.

[0235] For example, the value and meaning of the first indication information may be as shown in the following Table 2-1:

[0236] Table 2-1

[0237] The value of the first indication information The meaning of the first instruction 0 The first time-frequency resource set does not exist 1 The first time-frequency resource set exists and occupies 1 symbol 2 The first time-frequency resource set exists and occupies 2 symbols 3 The first time-frequency resource set exists and occupies 3 symbols

[0238] As shown in Table 2-1, the values ​​of the first indication information are 0, 1, 2, and 3. When the value of the first indication information is 0, it indicates that the first time-frequency resource set does not exist; when the value of the first indication information is 1, it indicates that the first time-frequency resource set exists and the first time-frequency resource set occupies 1 symbol in the time domain; when the value of the first indication information is 2, it indicates that the first time-frequency resource set exists and the first time-frequency resource set occupies 2 symbols in the time domain; when the value of the first indication information is 3, it indicates that the first time-frequency resource set exists and the first time-frequency resource set occupies 3 symbols in the time domain.

[0239] In this embodiment, since the first indication information sent by the network device can not only indicate whether the first time-frequency resource set exists, but also indicate the number of symbols in the first time-frequency resource set, the terminal device can determine the number of symbols in the first time-frequency resource set based on the first indication information. During the process of monitoring control information, if the control information has been repeatedly monitored in L symbols, and when L symbols equal the number of symbols indicated by the first indication information, the terminal device does not need to monitor the control information on other time-frequency resources, which is beneficial to reducing the load on the terminal device.

[0240] In an optional embodiment, when the number of symbols occupied by the first time-frequency resource set and the second time-frequency resource set in the time domain does not exceed 3, when the number of symbols occupied by the second time-frequency resource set in the time domain is 1, the first indication information can indicate three different meanings through three different values. Specifically, one value is used to indicate that the first time-frequency resource set does not exist, another value is used to indicate that the first time-frequency resource set exists and the first time-frequency resource set occupies 1 symbol in the time domain, and another value is used to indicate that the first time-frequency resource set exists and the first time-frequency resource set occupies 2 symbols in the time domain. Exemplarily, the values ​​and meanings of the first indication information can be shown in the following Table 2-2:

[0241] Table 2-2

[0242] The value of the first indication information The meaning of the first instruction 0 The first time-frequency resource set does not exist 1 The first time-frequency resource set exists and occupies 1 symbol 2 The first time-frequency resource set exists and occupies 2 symbols 3 reserve

[0243] As shown in Table 2-2, the values ​​of the first indication information are 0, 1, and 2. When the value of the first indication information is 0, it indicates that the first time-frequency resource set does not exist; when the value of the first indication information is 1, it indicates that the first time-frequency resource set exists and the first time-frequency resource set occupies 1 symbol in the time domain; when the value of the first indication information is 2, it indicates that the first time-frequency resource set exists and the first time-frequency resource set occupies 2 symbols in the time domain.

[0244] In an optional embodiment, when the number of symbols occupied by the first time-frequency resource set and the second time-frequency resource set in the time domain does not exceed 3, and the number of symbols occupied by the second time-frequency resource set in the time domain is 2, the first indication information can indicate three different meanings through three different values. Specifically, one value is used to indicate that the first time-frequency resource set does not exist, and the other value is used to indicate that the first time-frequency resource set exists and the first time-frequency resource set occupies 1 symbol in the time domain. Exemplarily, the values ​​and meanings of the first indication information can be shown in the following Table 2-3:

[0245] Table 2-3

[0246] The value of the first indication information The meaning of the first instruction 0 The first time-frequency resource set does not exist 1 The first time-frequency resource set exists and occupies 1 symbol 2 reserve 3 reserve

[0247] As shown in Table 2-3, the values ​​of the first indication information are 0 and 1. When the value of the first indication information is 0, it indicates that the first time-frequency resource set does not exist; when the value of the first indication information is 1, it indicates that the first time-frequency resource set exists and the first time-frequency resource set occupies 1 symbol in the time domain.

[0248] In an optional embodiment, the first indication information can be used to indicate whether the first time-frequency resource set exists, the position of the first time-frequency resource set in the time domain, and the number of symbols occupied by the first time-frequency resource set in the time domain. Specifically, the first indication information can express four different meanings through four different values. Specifically, one of the values ​​is used to indicate that the first time-frequency resource set does not exist; another value indicates that the first time-frequency resource set and the first time-frequency resource set are located in different time slots in the time domain; another value indicates that the first time-frequency resource set and the second time-frequency resource set are located on continuous and different symbols in the same time slot in the time domain, and occupy 1 symbol; another value indicates that the first time-frequency resource set and the second time-frequency resource set are located on continuous and different symbols in the same time slot in the time domain, and occupy 2 symbols. Exemplarily, the values ​​and meanings of the first indication information can be shown in Table 3-1 below:

[0249] Table 3-1

[0250]

[0251] As shown in Table 3-1, the values ​​of the first indication information are 0, 1, 2, and 3. When the first indication information takes a value of 0, it indicates that the first time-frequency resource set does not exist; when the first indication information takes a value of 1, it is used to indicate that the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain; when the first indication information takes a value of 2, it is used to indicate that the first time-frequency resource set and the second time-frequency resource set are located in continuous and different symbols in the same time slot in the time domain, and occupy 2 symbols; when the first indication information takes a value of 3, it is used to indicate that the first time-frequency resource set and the second time-frequency resource set are located in continuous and different symbols in the same time slot in the time domain, and occupy 1 symbol. In this embodiment, since the first indication information sent by the network device not only indicates the position of the first time-frequency resource set, but also indicates the number of symbols occupied by the first time-frequency resource set, the terminal device can accurately locate the first time-frequency resource set in combination with the first indication information, narrowing the range of the terminal device monitoring control information, which is conducive to reducing the load of the terminal device.

[0252] In another optional embodiment, the first indication information can express five different meanings through five different values. Specifically, one value is used to indicate that the first time-frequency resource set does not exist; another value indicates that the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain and occupy 1 symbol; another value indicates that the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain and occupy 2 symbols; another value indicates that the first time-frequency resource set and the second time-frequency resource set are located in continuous and different symbols in the same time slot in the time domain and occupy 1 symbol; another value indicates that the first time-frequency resource set and the second time-frequency resource set are located in continuous and different symbols in the same time slot in the time domain and occupy 2 symbols.

[0253] Table 3-2

[0254]

[0255] As shown in Table 3-1, the values ​​of the first indication information are 0, 1, 2, and 3. When the first indication information value is 0, it indicates that the first time-frequency resource set does not exist; when the first indication information value is 1, it indicates that the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain and occupy 2 symbols; when the first indication information value is 2, it indicates that the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain and occupy 1 symbol; when the first indication information value is 3, it indicates that the first time-frequency resource set and the second time-frequency resource set are located in consecutive and different symbols in the same time slot in the time domain and occupy 2 symbols; when the first indication information value is 4, it indicates that the first time-frequency resource set and the second time-frequency resource set are located in consecutive and different symbols in the same time slot in the time domain and occupy 1 symbol.

[0256] It should be understood that the examples in Tables 1-1, 2-1, 2-2, 2-3, 3-1, and 3-2 are provided for ease of understanding of this solution. The correspondence between the value of the first indication information and the meaning of the first indication information can be flexibly set according to actual circumstances. The value of the first indication information can also be other numbers, or other values ​​can be used to indicate more other meanings. The specific value of the first indication information and the meaning expressed should be flexibly determined based on actual circumstances and are not specifically limited here.

[0257] In addition, the aforementioned first indication information may be included in a physical broadcast channel (PBCH), that is, the network device sends the aforementioned first indication information to the terminal device through the aforementioned physical broadcast channel PBCH. Optionally, the aforementioned physical broadcast channel PBCH may be a periodic broadcast PBCH. Exemplarily, the terminal device may periodically blindly detect a synchronization signal / broadcast channel block (SS / PBCH block, SSB) to obtain the PBCH in the SSB, and then obtain the aforementioned second indication information from the aforementioned PBCH.

[0258] Exemplarily, the first time-frequency resource may be a time-frequency resource carrying a physical downlink control channel (PDCCH). The first control information may be downlink control information (DCI) or sidelink control information, etc. The specifics are not limited here.

[0259] Exemplarily, the aforementioned first time-frequency resource set can be the time-frequency resource set occupied by the physical downlink control channel PDCCH (Type0-PDCCH) of type 0, that is, the time-frequency domain position of the first time-frequency resource set is the time-frequency domain position of the time-frequency resource set occupied by the PDCCH of type 0; the first time-frequency resource set can also be the time-frequency resource set occupied by the physical downlink control channel PDCCH (Type0-PDCCH) of type 1, that is, the time-frequency domain position of the first time-frequency resource set is the time-frequency domain position of the time-frequency resource set occupied by the PDCCH of type 1, which is not limited here. Among them, the time-frequency resource set can be specifically expressed as a control resource set CORESET, or as a set of time-frequency resources carrying a control channel candidate set (i.e., PDCCH candidates), or as other types of time-frequency resource units, which are not limited here.

[0260] In this embodiment, the number of bits occupied by the first indication information is no more than two. Since there are two reserved bits in the PBCH, when the number of bits occupied by the first indication information is no more than two, the first indication information can be placed in the two reserved bits in the PBCH, thereby eliminating the need to add new bits to the PBCH and avoiding additional overhead for the PBCH.

[0261] It should be understood that there is no time sequence limit between the aforementioned steps 301a and 301b. The network device may first execute step 301a and then step 301b, or may first execute step 301b and then step 301a, or may execute both steps 301a and 301b simultaneously. The specific details are not limited here. However, before the network device sends the first indication information and the second indication information to the terminal device, the network device first determines the time-frequency domain position of the second time-frequency resource, and then determines the time-frequency position of the first time-frequency resource.

[0262] Step 302a: The terminal device determines the time-frequency domain position of the second time-frequency resource set based on the second indication information and the index value of the first SSB.

[0263] Optionally, the terminal device may determine an index value for querying a reference table based on the second indication information, and then query the reference table in the conventional technology based on the index value to obtain a parameter for determining the time-frequency domain position of the second time-frequency resource set. The terminal device then determines the time-frequency domain position of the second time-frequency resource set based on the parameter for determining the time-frequency domain position of the second time-frequency resource set and the index value of the first SSB.

[0264] Optionally, the second indication information may determine two index values, one of which is used to determine the frequency domain range of the second time-frequency resource set, and the other is used to determine the time domain range of the second time-frequency resource set. For example, the first few bits of the second indication information are used as an index value to query a reference table in a conventional technology (e.g., reference Table 13-1 (i.e., Table 13-1 in protocol 38.213)) for parameters for determining the frequency domain range of the second time-frequency resource set; the last few bits of the second indication information are used as an index value to query a reference table in a conventional technology (e.g., reference Table 13-11 (i.e., Table 13-11 in protocol 38.213) (or reference Table 13-12 (i.e., Table 13-12 in protocol 38.213)) for parameters for determining the time domain range of the second time-frequency resource set.

[0265] Exemplarily, the second indication information may be a parameter in the main information block MIB for configuring the time-frequency resources that carry the control channel. Exemplarily, the aforementioned second indication information is the parameter pdcch-ConfigSIB1, which consists of 8 bits, of which 4 bits are ControlResourceSetZero and the other 4 bits are SearchSpaceZero. Among them, ControlResourceSetZero is the high 4 bits of pdcch-ConfigSIB1, which is used to determine the frequency domain range of the second time-frequency resource set. The terminal device can determine the frequency domain position of the second time-frequency resource set based on the value of ControlResourceSetZero and reference Table 13-1 (i.e., Table 13-1 in Protocol 38.213). The frequency domain position of the second time-frequency resource set can be expressed by the number of consecutive RBs, the number of symbols, and the RB offset. In addition, SearchSpaceZero is the low 4 bits of pdcch-ConfigSIB1, which is used to determine the time domain range of the second time-frequency resource set. The terminal device can determine the number of second time-frequency resource sets in each time slot, the index value of the first symbol of the second time-frequency resource set in the time slot, and parameters O and M for determining the index value of the time slot of the second time-frequency resource set based on the value of SearchSpaceZero and reference Table 13-11 (i.e., Table 13-11 in protocol 38.213) (or reference Table 13-12 (i.e., Table 13-12 in protocol 38.213)). Then, the terminal device determines the time domain position of the second time-frequency resource based on the index value of the first symbol of the second time-frequency resource set in the time slot and the index value of the time slot of the second time-frequency resource set.

[0266] Specifically, the terminal device may determine the index value n0 of the time slot of the second time-frequency resource set based on the following formula 1:

[0267]

[0268] Wherein, O represents the starting position of the monitoring window of the first SSB, which is used to avoid the conflict between the type0-PDCCH CSS monitoring window and the SSB monitoring window; M represents the degree of overlap between the monitoring windows of SSB i and SSB i+1; i represents the index value of the first SSB; μ represents the subcarrier spacing; Indicates the number of time slots in a radio frame. When the subcarrier spacing is fixed, the number of time slots in a radio frame is fixed.

[0269] Since the terminal device can determine the frequency domain position of the second time-frequency resource set based on the upper 4 bits in the second indication information, and can determine the time domain position of the second time-frequency resource set based on the lower 4 bits in the second indication information and the index value of the first SSB. Therefore, the terminal device can determine the time-frequency domain position of the second time-frequency resource set based on the aforementioned second indication information and the index value of the first SSB. It should be understood that the terminal device determines the time domain position of the second time-frequency resource set, which can also be understood as the terminal device being able to determine the timing of monitoring the second time-frequency resource, that is, the timing determined by the index value of the time slot of the second time-frequency resource set and the index value of the first symbol in the time slot corresponding to the index value of the time slot.

[0270] Subsequently, the terminal device will monitor the control channel based on the time-frequency domain position of the aforementioned second time-frequency resource set, so as to be able to receive the first control information in the control channel carried by the second time-frequency resource.

[0271] Step 302b: If the first indication information indicates that the time-frequency domain position of the first time-frequency resource set can be indicated, the terminal device determines the time-frequency domain position of the first time-frequency resource set based on the first indication information and the time-frequency domain position of the second time-frequency resource set.

[0272] Since the first indication information can indicate the association relationship (i.e., the first association relationship) between the time-frequency domain position of the first time-frequency resource set and the time-frequency domain position of the second time-frequency resource set, the terminal device can determine the time-frequency domain position of the first time-frequency resource set based on the aforementioned first association relationship and the time-frequency domain position of the second time-frequency resource set.

[0273] In one possible implementation, the first association relationship is used to indicate that the first time-frequency resource set and the second time-frequency resource set are located on consecutive and different symbols in the same time slot in the time domain. In this case, the terminal device can determine the adjacent symbols of the symbols in the time slot where the second time-frequency resource set is located as the time domain position of the first time-frequency resource set, and use the frequency domain position of the second time-frequency resource set as the frequency domain position of the first time-frequency resource set. In this way, the terminal device determines the time-frequency domain position of the first time-frequency resource set.

[0274] For ease of understanding, Figure 4A For example, if the terminal device has determined that the second time-frequency resource set is located in the first symbol of time slot 0 (that is, the symbol with an index value of 0 in time slot 0) and the first symbol of time slot 1 (that is, the symbol with an index value of 1 in time slot 1), then the terminal device can determine that the first time-frequency resource set is also located in time slot 0 and time slot 1 based on the first association relationship, except that the first time-frequency resource set is located in the second symbol of time slot 0 (that is, the symbol with an index value of 1 in time slot 0) and the second symbol of time slot 1 (that is, the symbol with an index value of 1 in time slot 1).

[0275] In another possible embodiment, the first association relationship is used to indicate that the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain. Generally, in order to reduce complexity, it is assumed that the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located. At this time, the terminal device can add one or subtract one based on the index value of the time slot where the second time-frequency resource set is located to determine the index value of the time slot where the first time-frequency resource set is located, and the terminal device uses the index value of the symbol of the time slot of the second time-frequency resource set as the index value of the symbol of the time slot of the first time-frequency resource set. In this way, the terminal device determines the time-frequency domain position of the first time-frequency resource set.

[0276] For ease of understanding, Figure 4B For example. If the terminal device has determined that the second time-frequency resource set is located in the first symbol of time slot 1 (that is, the symbol with an index value of 0 in time slot 1) and the second symbol of time slot 1 (that is, the symbol with an index value of 1 in time slot 1), then the terminal device can determine, based on the first association relationship, that the first time-frequency resource set is also located in time slot 0 or in time slot 2. Here, taking the first time-frequency resource set being located in time slot 0 as an example, the first time-frequency resource set is located in the first symbol of time slot 0 (that is, the symbol with an index value of 0 in time slot 0) and the second symbol of time slot 0 (that is, the symbol with an index value of 1 in time slot 0).

[0277] Step 303a: The network device sends first control information to the terminal device on the second time-frequency resource in the second time-frequency resource set.

[0278] Step 303b: The network device sends first control information to the terminal device on the first time-frequency resource in the first time-frequency resource set.

[0279] In this embodiment, step 303b is an optional step. The network device executes step 303b only when it determines that the first indication information can reflect the existence of the first time-frequency resource set, that is, the network device has configured the first time-frequency resource set for the terminal device.

[0280] In this step, if the first indication information indicates the existence of the first time-frequency resource set, the network device may repeatedly send the first control information to the terminal device on the first time-frequency resource of the first time-frequency resource set. Optionally, the network device may repeatedly send the first control information to the terminal device in a periodic manner.

[0281] It should be understood that when the network device is able to execute step 303b, the network device will repeatedly send at least two copies of the first control information to the terminal device through the first time-frequency resource and the second time-frequency resource respectively (one copy is transmitted through the first time-frequency resource and the other copy is transmitted through the second time-frequency resource).

[0282] Optionally, the first time-frequency resource and the second time-frequency resource occupy the same frequency domain resources, so that the network device can repeatedly send control information in the same frequency domain, which is beneficial for the network device to complete the repeated sending operation of the first control information and is also beneficial for the network device to manage the time-frequency resources.

[0283] In step 304a, the terminal device monitors the control channel according to the time-frequency domain position of the second time-frequency resource set, so as to receive the first control information sent by the network device on the second time-frequency resource.

[0284] Specifically, after the terminal device determines the time-frequency domain position of the second time-frequency resource set, since the second time-frequency resource set contains multiple time-frequency resources, the terminal device monitors the control channel at the position of each time-frequency resource in the multiple time-frequency resources, thereby receiving the first control information sent by the network device on the second time-frequency resource.

[0285] Step 304b: The terminal device monitors the control channel according to the time-frequency domain position of the first time-frequency resource set, so as to receive the first control information sent by the network device on the first time-frequency resource.

[0286] In this embodiment, step 304b is an optional step. When the first indication information indicates the existence of the first time-frequency resource set and the terminal device is able to determine the time-frequency domain position of the first time-frequency resource set, the terminal device monitors the first time-frequency resource according to the time-frequency domain position of the first time-frequency resource set. Specifically, after the terminal device determines the time-frequency domain position of the first time-frequency resource set, since the first time-frequency resource set includes multiple time-frequency resources, the terminal device monitors the control information at the position of each time-frequency resource in the multiple time-frequency resources, thereby receiving the first control information sent by the network device on the first time-frequency resource.

[0287] In this embodiment, when the aforementioned first time-frequency resource set and the second time-frequency resource set are respectively located in continuous and different symbols in the same time slot in the time domain, the terminal device only needs to continuously monitor the first control information in one time slot (i.e., the time slot where the second time-frequency resource set is located) to receive at least two repeated first control information, thereby reducing the workload of the terminal device.

[0288] In this embodiment, the first indication information sent by the network device to the terminal device is not only used to indicate whether the first time-frequency resource set exists, but also to indicate the time-frequency domain position of the first time-frequency resource set. The terminal device can determine the time-frequency domain position of the first time-frequency resource set based on the first indication information and the time-frequency domain position of the second time-frequency resource set, and then the terminal device can respectively monitor the control channel on the first time-frequency resource set and the second time-frequency resource set to receive the first control information respectively. Therefore, the terminal device can receive two copies of the first control information on different time-frequency resources. Compared with traditional technology, the terminal device in traditional technology can only receive one copy of the first control information from the second time-frequency resource. Therefore, the solution proposed in this embodiment can effectively improve the probability of the terminal device correctly receiving the first control information.

[0289] The following combination Figure 5 The control information sending (or receiving) method proposed in this application is further introduced. In this method, the first indication information is only used to indicate whether there is a first time-frequency resource (that is, whether there is repeated transmission of the first control information), and cannot directly or indirectly indicate the time-frequency domain position of the first time-frequency resource set described in the first time-frequency resource. However, the terminal device can query the reference table updated in this application to determine the time-frequency domain position of the first time-frequency resource set based on the second indication information. Specifically, the terminal device and the network device mainly perform the following steps:

[0290] Step 501a: The network device sends second indication information to the terminal device; correspondingly, the terminal device receives the second indication information from the network device.

[0291] The second indication information is used to indicate the time-frequency domain location of the second time-frequency resource set. The second time-frequency resource set includes multiple time-frequency resources. The multiple time-frequency resources include a second time-frequency resource, which is used to transmit the first control information. For details, please refer to the relevant description in step 301a above, which is not repeated here.

[0292] Step 501b: The network device sends first indication information to the terminal device; correspondingly, the terminal device receives the first indication information from the network device.

[0293] The first indication information is used to indicate whether there is repeated transmission of the first control information. It can also be understood that the first indication information is used to indicate whether there is a first time-frequency resource set. It can also be understood that the first indication information is used to indicate whether the first time-frequency resource exists. It can also be understood that the first indication information is used to indicate whether the network device has configured time-frequency resources for the terminal device for repeated transmission of the first control information. Both the first time-frequency resource set and the aforementioned second time-frequency resource set can be used to transmit the first control information. Compared to the aforementioned second time-frequency resource set, the first time-frequency resource set can be understood as a time-frequency resource set additionally configured by the network device for the terminal device for repeated transmission of the first control information. Of course, when the first indication information indicates the existence of the first time-frequency resource set, it also implicitly indicates the existence of the first time-frequency resource in the first time-frequency resource set. When the first indication information indicates the absence of the first time-frequency resource set, it also implicitly indicates the absence of the first time-frequency resource.

[0294] In practical applications, the first indication information can take two different values ​​to indicate the presence or absence of repeated transmission of the first control information. For example, one value is used to indicate the absence of repeated transmission of the first control information, and the other value is used to indicate the presence of repeated transmission of the first control information. It can also be understood that the first indication information can take two different values ​​to indicate the presence or absence of the first time-frequency resource set. For example, one value is used to indicate the absence of the aforementioned first time-frequency resource set, and the other value is used to indicate the presence of the aforementioned first time-frequency resource set.

[0295] Exemplarily, the two values ​​of the first indication information are 0 and 1 respectively. When the first indication information is 0, it means that the aforementioned first time-frequency resource set does not exist (i.e., there is no repeated transmission of the first control information), that is, the network device will not repeatedly send the first control information to the terminal device on the first time-frequency resource in the first time-frequency resource set, then the terminal device can only monitor the first control information on the second time-frequency resource set, and not monitor the first control information on the first time-frequency resource set; when the first indication information is 1, it means that the aforementioned first time-frequency resource set exists (i.e., there is repeated transmission of the first control information), that is, the network device will repeatedly send the first control information to the terminal device on the first time-frequency resource in the first time-frequency resource set, then the terminal device can monitor the first control information on both the first time-frequency resource set and the second time-frequency resource set. It should be understood that the above example is only for the convenience of understanding this solution, and it can also be that when the first indication information is 1, it means that the first time-frequency resource set does not exist (i.e., there is no repeated transmission of the first control information); when the first indication information is 0, it means that the first time-frequency resource set exists (i.e., there is repeated transmission of the first control information). In addition, other numbers can also be used to distinguish between the two states of existence and non-existence, which are not limited here.

[0296] It should be understood that before the network device sends the first indication information to the terminal device, the network device will determine based on one or more relevant factors whether the first indication information sent to the terminal device is used to indicate the existence of the first time-frequency resource set (i.e., indicating the existence of repeated transmission of the first control information) or to indicate the non-existence of the first time-frequency resource set (i.e., indicating the non-existence of repeated transmission of the first control information); it can also be understood as whether the network device configures the aforementioned first time-frequency resource set for the terminal device. Among them, the aforementioned relevant factors include but are not limited to the distance between the network device and the terminal device or the communication quality between the network device and the terminal device. Specifically, please refer to the relevant introduction in step 301b above, which will not be repeated here.

[0297] It should be understood that there is no time sequence restriction between the aforementioned steps 501a and 501b. The network device may first execute step 501a and then step 501b, or may first execute step 501b and then step 501a, or may execute steps 501a and 501b simultaneously. The specific details are not limited here.

[0298] In an optional embodiment, when the network device executes the aforementioned step 501a and step 501b simultaneously, the network device may encapsulate the aforementioned first indication information and the second indication information in a message (hereinafter referred to as the first message) carrying the main information block MIB. Optionally, the second indication information is encapsulated in the main information block MIB, and the first indication information is encapsulated in a payload within the first message outside the main information block MIB. When the terminal device receives the first message carrying the aforementioned first indication information and the second indication information, the terminal device can determine whether there is a first time-frequency resource set based on the first indication information (that is, whether there is repeated transmission of the first control information in the first indication information), and then determine the time-frequency domain position of the first time-frequency resource set based on the second indication information. For details, please refer to the relevant introduction in steps 502a and 502b below.

[0299] Optionally, the first indication information may be encapsulated in the PBCH payload. In an optional embodiment, the first indication information may be carried in a reserved bit a in the PBCH payload. A+6 In another optional implementation, the first indication information may be carried in the reserved bit a in the PBCH payload. A+6 and a A+7 middle.

[0300] In an optional embodiment, when the network device executes the aforementioned step 501a and step 501b simultaneously, the network device may also encapsulate the aforementioned first indication information and the second indication information in different messages respectively, and send the aforementioned first indication information and the second indication information to the terminal device through different messages. For ease of introduction, it is said that the network device encapsulates the first indication information in the second message and encapsulates the second indication information in the third message. Optionally, there is a certain association between the aforementioned second message and the third message, so that the terminal device can know that when determining the time-frequency domain position of the first time-frequency resource set indicated by the first indication information in the second message, it is necessary to use the time-frequency domain position of the second time-frequency resource set indicated by the second indication information in the third message. Exemplarily, the second message and the third message have the same identifier. When the terminal device receives the second message and the third message, the terminal device can determine that the second message and the third message are associated through the identifier.

[0301] In addition, the aforementioned first indication information may be included in a physical broadcast channel (PBCH), that is, the network device sends the aforementioned first indication information to the terminal device via the aforementioned physical broadcast channel (PBCH). Optionally, the aforementioned physical broadcast channel (PBCH) may be a periodic broadcast PBCH. Exemplarily, the terminal device may periodically blindly detect a synchronization signal / broadcast channel block (SSB) to obtain the PBCH in the SSB, and then obtain the aforementioned second indication information from the aforementioned PBCH.

[0302] Exemplarily, the first time-frequency resource may be a time-frequency resource carrying a physical downlink control channel (PDCCH). The first control information may be downlink control information (DCI) or sidelink control information, etc. The specifics are not limited here.

[0303] Exemplarily, the aforementioned first time-frequency resource set can be the time-frequency resource set occupied by the physical downlink control channel PDCCH (Type0-PDCCH) of type 0, that is, the time-frequency domain position of the first time-frequency resource set is the time-frequency domain position of the time-frequency resource set occupied by the PDCCH of type 0; the first time-frequency resource set can also be the time-frequency resource set occupied by the physical downlink control channel PDCCH (Type0-PDCCH) of type 1, that is, the time-frequency domain position of the first time-frequency resource set is the time-frequency domain position of the time-frequency resource set occupied by the PDCCH of type 1, which is not limited here. Among them, the time-frequency resource set can be specifically expressed as a control resource set CORESET, or as a set of time-frequency resources carrying a control channel candidate set (i.e., PDCCH candidates), or as other types of time-frequency resource units, which are not limited here.

[0304] In addition, when the first indication information indicates the presence of the first time-frequency resource set (i.e., the first indication information indicates the presence of repeated transmission of the first control information), the terminal device will execute steps 502a and 504b, and the network device will also execute step 503b. When the first indication information indicates the absence of the first time-frequency resource set, the terminal device will not execute steps 502a and 504b, and the network device will not execute step 503b.

[0305] Step 502a, if the first indication information indicates that there is repeated transmission of the first control information, the terminal device determines the time-frequency domain position of the first time-frequency resource set and the time-frequency domain position of the second time-frequency resource set based on the second indication information, the index value of the first SSB and the first table.

[0306] Specifically, the terminal device will search the first table based on the second indication information to determine the time-frequency domain position of the first time-frequency resource set. The first table searched by the terminal device is a newly defined reference table, which adds some parameter values ​​on the basis of the reference table in the traditional technology (i.e., Table 13-11 in protocol 38.213 or Table 13-12 in protocol 38.213), so that the first table not only contains the parameters for determining the time-frequency domain position of the second time-frequency resource set, but also contains the parameters for determining the time-frequency position of the first time-frequency resource set.

[0307] In one possible implementation, the aforementioned first table adds a value of a first parameter on the basis of a reference table in conventional technology, where the first parameter is the index value of the first symbol (first symbol index), representing the index value of the first symbol of the time slot in the monitoring window of the time-frequency resource set. The value of the first parameter includes the index value of the first symbol corresponding to the second time-frequency resource set and the index value of the first symbol corresponding to the first time-frequency resource set. In conventional technology, the reference table only includes the index value of the first symbol corresponding to the second time-frequency resource set.

[0308] Optionally, the first parameter can be defined as having a first value as the index value of the first symbol corresponding to the second time-frequency resource set, and a second value as the index value of the first symbol corresponding to the first time-frequency resource set; or the first parameter can be defined as having a first value as the index value of the first symbol corresponding to the first time-frequency resource set, and a second value as the index value of the first symbol corresponding to the second time-frequency resource set. The specific definition is not limited here. For ease of introduction, the following text will use the example of the first value as the index value of the first symbol corresponding to the second time-frequency resource set, and the second value as the index value of the first symbol corresponding to the first time-frequency resource set.

[0309] The index value of the first symbol corresponding to the second time-frequency resource set is expressed in the same manner as in conventional technology. The index value of the first symbol of the first time-frequency resource set is determined based on the number of symbols in the first time-frequency resource set or is 0. For example, the index value of the first symbol of the first time-frequency resource set can be or wait.

[0310] Exemplarily, when the index value of the first symbol of the second time-frequency resource set is "0", and the index value of the first symbol of the first time-frequency resource set is (i.e., the number of symbols in the first time-frequency resource set), the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain, and the time slot in which the second time-frequency resource set is located is located before the time slot in which the first time-frequency resource set is located. Wherein, "0" indicates that the symbol in which the second time-frequency resource set is located is the first symbol in the time slot; Indicates that the time slot where the first time-frequency resource set is located is the next time slot where the second time-frequency resource set is located, and the number of symbols of the first time-frequency resource set in the corresponding time slot (i.e., the next time slot) is the same as the number of symbols of the second time-frequency resource set in the corresponding time slot (i.e., the previous time slot). For example, if the second time-frequency resource is calculated by the above formula 1 to be located in the time slot with an index value of 0 (i.e., time slot 0), when the value of the first parameter is When , it means that the second time-frequency resource set is located in the symbol with an index value of 0 in time slot 0, and the first time-frequency resource set is located in the symbol with an index value of 0 in time slot 1.

[0311] Exemplarily, when the index value of the first symbol of the second time-frequency resource set is "0", and the index value of the first symbol of the first time-frequency resource set is (i.e., the opposite number of symbols in the first time-frequency resource set), the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain, and the time slot in which the first time-frequency resource set is located is located before the time slot in which the second time-frequency resource set is located. "0" indicates that the symbol in which the second time-frequency resource set is located is the first symbol in the time slot; Indicates that the time slot where the first time-frequency resource set is located is the previous time slot of the time slot where the second time-frequency resource set is located, and the number of symbols of the first time-frequency resource set in the corresponding time slot (i.e., the previous time slot) is the same as the number of symbols of the second time-frequency resource set in the corresponding time slot (i.e., the next time slot). For example, if the second time-frequency resource is calculated by the above formula 1 to be located in the time slot with an index value of 1 (i.e., time slot 1), when the value of the first parameter is , it indicates that the second time-frequency resource set is located in the symbol with an index value of 0 in time slot 1, and the first time-frequency resource set is located in the symbol with an index value of 0 in time slot 0.

[0312] Exemplarily, when the index value of the first symbol of the second time-frequency resource set is "1", and the index value of the first symbol of the first time-frequency resource set is (i.e., the number of symbols of the first time-frequency resource set), the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain. Optionally, the time slot where the second time-frequency resource set is located is located before the time slot where the first time-frequency resource set is located. Among them, "1" indicates that the symbol where the second time-frequency resource set is located is the second symbol in the time slot, that is, the symbol with an index value of 1 in the time slot; Indicates that the time slot where the first time-frequency resource set is located is the next time slot where the second time-frequency resource set is located, and the number of symbols of the first time-frequency resource set in the corresponding time slot (i.e., the next time slot) is the same as the number of symbols of the second time-frequency resource set in the corresponding time slot (i.e., the previous time slot), both of which are symbols with an index value of 1. For example, if the second time-frequency resource is calculated by the above formula 1 to be located in the time slot with an index value of 0 (i.e., time slot 0), when the value of the first parameter is When , it means that the second time-frequency resource set is located in the symbol with an index value of 1 in time slot 0, and the first time-frequency resource set is located in the symbol with an index value of 1 in time slot 1.

[0313] For example, when the index value of the first symbol of the second time-frequency resource set is "2", and the index value of the first symbol of the first time-frequency resource set is (i.e., the number of symbols in the first time-frequency resource set), the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain. Optionally, the time slot where the second time-frequency resource set is located is located before the time slot where the first time-frequency resource set is located. Among them, "2" means that the symbol where the second time-frequency resource set is located is the third symbol in the time slot, that is, the symbol with an index value of 2 in the time slot; Indicates that the time slot where the first time-frequency resource set is located is located in the next time slot of the time slot where the second time-frequency resource set is located, and the number of symbols of the first time-frequency resource set in the corresponding time slot (i.e., the next time slot) is the same as the number of symbols of the second time-frequency resource set in the corresponding time slot (i.e., the previous time slot), both of which are symbols with an index value of 2. For example, if the second time-frequency resource is calculated by the above formula 1 to be located in the time slot with an index value of 0 (i.e., time slot 0), when the value of the first parameter is , it indicates that the second time-frequency resource set is located in the symbol with an index value of 2 in time slot 0, and the first time-frequency resource set is located in the symbol with an index value of 2 in time slot 1.

[0314] It should be understood that in practical applications, other numbers or characters may be defined to represent the time domain position relationship between two time-frequency resource sets, which are not listed here in detail.

[0315] Optionally, the first table also includes an index value for determining the value of the aforementioned first parameter, and each row in the first table has an index value corresponding to the row, and the index values ​​of different rows are different. The terminal device is capable of determining a first index value based on the second indication information, wherein the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set. At this time, the terminal device can obtain two index values ​​for the first symbol (i.e., the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set) in one table lookup operation by querying the aforementioned first table based on the first index value. In conventional technology, the first index value determined based on the second indication information can only query one index value for the first symbol (i.e., the index value of the first symbol in the monitoring window of the second time-frequency resource set). Therefore, the solution proposed in this embodiment is conducive to reducing the number of times the terminal device queries the reference table, and is conducive to the terminal device quickly determining the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0316] For example, the newly defined reference table (i.e., the first table) proposed in this application may be as shown in Table 4-1 and Table 4-2 below:

[0317] Among them, Table 4-1 is a newly defined reference table obtained based on reference Table 13-11 (Table 13-11), which indicates the parameters used to determine the PDCCH monitoring occasions when the pattern type is pattern 1 and the radio frequency type is FR1, that is, Parameters for PDCCH monitoring occasions for Type0-PDCCH CSS set-SS / PBCH block and CORESET multiplexing pattern 1and FR1.

[0318] Among them, Table 4-2 is a newly defined reference table obtained based on reference Table 13-12 (Table 13-12), which indicates the parameters used to determine the PDCCH monitoring occasions when the pattern type is pattern 1 and the radio frequency type is FR2, that is, Parameters for PDCCH monitoring occasions for Type0-PDCCH CSS set-SS / PBCH block and CORESET multiplexing pattern 1and FR2.

[0319] Table 4-1

[0320]

[0321] Table 4-2

[0322]

[0323] Optionally, the terminal device may determine an index value for querying the first table based on the second indication information, and then the terminal device queries the first table based on the index value to obtain parameters for determining the time-frequency domain position of the second time-frequency resource set and parameters for determining the time-frequency domain position of the first time-frequency resource set. Then, the terminal device determines the time-frequency domain position of the second time-frequency resource set based on the parameters for determining the time-frequency domain position of the second time-frequency resource set and the index value of the first SSB, and the terminal device determines the time-frequency domain position of the first time-frequency resource set based on the parameters for determining the time-frequency domain position of the first time-frequency resource set and the index value of the first SSB.

[0324] Optionally, the second indication information can determine two index values, one of which is used to determine the frequency domain range of the second time-frequency resource set, and the other is used to determine the time domain range of the second time-frequency resource set (i.e., the aforementioned first index value). For example, the first 4 bits of the second indication information are used as an index value to query the parameters for determining the frequency domain range of the second time-frequency resource set and the parameters for determining the frequency domain range of the first time-frequency resource set in a reference table in traditional technology (e.g., reference Table 13-1 (i.e., Table 13-1 in Protocol 38.213)). The last 4 bits of the second indication information are used as an index value (i.e., the first index value) to query the parameters for determining the time domain range of the second time-frequency resource set and the parameters for determining the time domain range of the first time-frequency resource set in a first table (e.g., Table 4-1 or Table 4-2). Specifically, the terminal device can calculate the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set based on the aforementioned formula one. The manner in which the terminal device calculates the time domain position of the first time-frequency resource set is similar to the aforementioned process type for calculating the time domain position of the second time-frequency resource set. For details, please refer to the relevant introduction in step 302a, which will not be repeated here.

[0325] Optionally, the frequency domain position of the first time-frequency resource set and the frequency domain position of the second time-frequency resource set are the same.

[0326] Step 502b: If the first indication information indicates that there is no repeated transmission of the first control information, the time-frequency domain position of the second time-frequency resource set is determined according to the second indication information, the index value of the first SSB and the second table.

[0327] Optionally, the terminal device may determine an index value for querying a reference table based on the second indication information, and then the terminal device queries a reference table (i.e., the second table) in the conventional technology based on the index value to obtain a parameter for determining the time-frequency domain position of the second time-frequency resource set. The terminal device then determines the time-frequency domain position of the second time-frequency resource set based on the parameter for determining the time-frequency domain position of the second time-frequency resource set and the index value of the first SSB.

[0328] Optionally, the second indication information may determine two index values, one of which is used to determine the frequency domain range of the second time-frequency resource set, and the other is used to determine the time domain range of the second time-frequency resource set. For example, the first few bits of the second indication information are used as an index value to query a reference table in a conventional technology (e.g., reference Table 13-1 (i.e., Table 13-1 in protocol 38.213)) for parameters for determining the frequency domain range of the second time-frequency resource set; the last few bits of the second indication information are used as an index value to query a reference table in a conventional technology (e.g., reference Table 13-11 (i.e., Table 13-11 in protocol 38.213) (or reference Table 13-12 (i.e., Table 13-12 in protocol 38.213)) for parameters for determining the time domain range of the second time-frequency resource set.

[0329] Specifically, the terminal device determines a first index value based on the second indication information, and then uses the first index value to query the second table for a parameter used to determine the time domain position of the second time-frequency resource set. Then, the terminal device determines the time domain position of the second time-frequency resource set based on the parameter used to determine the time domain position of the second time-frequency resource set in the second table and the index value of the first SSB.

[0330] For details, please refer to the relevant introduction in the aforementioned step 302a, which will not be repeated here.

[0331] Step 503a: The network device sends first control information to the terminal device on the second time-frequency resource in the second time-frequency resource set.

[0332] Step 503b: The network device sends first control information to the terminal device on the first time-frequency resource in the first time-frequency resource set.

[0333] In this embodiment, step 503b is an optional step. When the first indication information sent by the network device to the terminal device indicates that there is repeated transmission of the first control information (ie, the first indication information indicates that there is a first time-frequency resource set), the network device may perform step 503b.

[0334] In step 504a, the terminal device monitors the second time-frequency resource according to the time-frequency domain position of the second time-frequency resource set, so as to receive the first control information sent by the network device on the second time-frequency resource.

[0335] Step 504b: The terminal device monitors the first time-frequency resource according to the time-frequency domain position of the first time-frequency resource set, so as to receive the first control information sent by the network device on the first time-frequency resource.

[0336] In this embodiment, step 504b is optional. When the first indication information indicates the presence of repeated transmission of the first control information (i.e., the first indication information indicates the presence of the first time-frequency resource set), the terminal device determines the time-frequency domain location of the first time-frequency resource set. At this time, the terminal device may execute step 504b.

[0337] In this embodiment, steps 503a, 503b, 504a and 504b are similar to the descriptions of steps 303a, 303b, 304a and 304b above, and are not described in detail here.

[0338] In this embodiment, the first indication information sent by the network device to the terminal device is only used to indicate whether there is repeated transmission of the first control information (i.e., whether there is a first time-frequency resource set). The terminal device can query the newly defined reference table (i.e., the first table) based on the second indication information to determine the time-frequency domain position of the first time-frequency resource set and the time-frequency domain position of the second time-frequency resource set. Then, the terminal device can monitor the control channel on the first time-frequency resource set and the second time-frequency resource set respectively to receive the first control information respectively. Therefore, the terminal device can receive two copies of the first control information on different time-frequency resources. Compared with traditional technologies, terminal devices in traditional technologies can only receive one copy of the first control information from the second time-frequency resource. Therefore, the solution proposed in this embodiment can effectively improve the probability of the terminal device correctly receiving the first control information.

[0339] like Figure 6 FIG. 6 is a schematic diagram of the structure of a communication device 60 provided in this embodiment. It should be understood that the aforementioned Figure 2A 、 Figure 2B 、 Figure 3 and Figure 5 The terminal device in the corresponding method embodiment can be based on the Figure 6 The structure of the communication device 60 is shown.

[0340] The communication device 60 includes at least one processor 601, at least one memory 602, and at least one transceiver 603. The processor 601, memory 602, and transceiver 603 are connected. Optionally, the communication device 60 may further include an input device 605, an output device 606, and one or more antennas 604. The antenna 604 is connected to the transceiver 603, and the input device 605 and output device 606 are connected to the processor 601.

[0341] In this embodiment, the memory 602 is mainly used to store software programs and data. The memory 602 can be independent and connected to the processor 601. Optionally, the memory 602 can be integrated with the processor 601, for example, integrated into one or more chips. Among them, the memory 602 can store program codes for executing the technical solutions of the embodiments of the present application, and the execution is controlled by the processor 601. The various computer program codes executed can also be regarded as drivers for the processor 601. It should be understood that in this embodiment, Figure 6 Only one memory and one processor are shown, but in actual applications, the communication device 60 may have multiple processors or multiple memories, which is not limited here. In addition, the memory 602 may also be referred to as a storage medium or storage device. The memory 602 may be a storage element on the same chip as the processor (i.e., an on-chip storage element) or an independent storage element, which is not limited in the embodiments of the present application.

[0342] In this embodiment, the transceiver 603 can be used to support the reception or transmission of radio frequency signals between the communication device 60 and the access network device, and the transceiver 603 can be connected to the antenna 604. The transceiver 603 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 604 can receive radio frequency signals. The receiver Rx of the transceiver 603 is used to receive the radio frequency signals from the antenna 604, convert the radio frequency signals into digital baseband signals or digital intermediate frequency signals, and provide the digital baseband signals or digital intermediate frequency signals to the processor 601 so that the processor 601 can further process the digital baseband signals or digital intermediate frequency signals, such as demodulation and decoding. In addition, the transmitter Tx in the transceiver 603 is also used to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 601, convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through one or more antennas 604. Specifically, the receiver Rx can selectively perform one or more stages of down-mixing and analog-to-digital conversion on the RF signal to obtain a digital baseband signal or a digital intermediate frequency signal. The order of the down-mixing and analog-to-digital conversion processes is adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing and digital-to-analog conversion on the modulated digital baseband signal or digital intermediate frequency signal to obtain a RF signal. The order of the up-mixing and digital-to-analog conversion processes is adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as digital signals.

[0343] It should be understood that the aforementioned transceiver 603 may also be referred to as a transceiver unit, a transceiver, a transceiver device, etc. Optionally, a device in the transceiver unit that implements a receiving function may be referred to as a receiving unit, and a device in the transceiver unit that implements a transmitting function may be referred to as a transmitting unit. That is, the transceiver unit includes a receiving unit and a transmitting unit. The receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

[0344] The processor 601 may be a baseband processor or a central processing unit (CPU). The baseband processor and CPU may be integrated or separate. The processor 601 may be used to implement various functions for the terminal device, such as processing communication protocols and communication data, controlling the entire terminal device, executing software programs, and processing software program data; assisting in completing computing tasks, such as graphics, image processing, or audio processing; or the processor 601 may be used to implement one or more of the above functions.

[0345] In addition, the output device 606 communicates with the processor 601 and can display information in a variety of ways, which are not specifically limited here.

[0346] In a possible implementation, the communication device 60 is used to perform the aforementioned Figure 2A or Figure 3 The method in the corresponding embodiment. At this time, the transceiver 603 in the communication device 60 is used to receive a first indication information from a network device before the communication device 60 is in a connected state, and the first indication information is used to indicate a first time-frequency resource set, and the first time-frequency resource set and the second time-frequency resource set are used to transmit the first control information. The processor 601 is used to determine the time domain position of the first time-frequency resource set according to the first indication information. In addition, the transceiver 603 is also used to receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before the connected state. Optionally, the first control information is used to schedule the system information block SIB1; or, the first control information is control information scrambled by the system message radio network temporary identifier SI-RNTI.

[0347] In an optional implementation, the first indication information is used to indicate the time domain position of the first time-frequency resource set. The transceiver 603 is further configured to determine the time domain position of the first time-frequency resource set according to the first indication information.

[0348] In an optional embodiment, the processor 601 in the communication device 60 is used to determine the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first synchronization signal block SSB, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0349] In an optional embodiment, the first indication information includes a first association relationship, where the first association relationship is used to indicate an association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set. The processor 601 is specifically configured to: determine the time domain position of the second time-frequency resource set based on the second indication information and the index value of the first SSB, where the second indication information is used to indicate the time domain position of the second time-frequency resource set; and determine the time domain position of the first time-frequency resource set based on the first indication information and the time domain position of the second time-frequency resource set.

[0350] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

[0351] In an optional implementation manner, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

[0352] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0353] In an optional implementation manner, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

[0354] In an optional implementation manner, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0355] In a possible implementation, the communication device 60 is used to perform the aforementioned Figure 2B or Figure 5 The method in the corresponding embodiment. At this time, the transceiver 603 in the communication device 60 is used to receive first indication information before the communication device 60 is in a connected state, and the first indication information is used to indicate whether there is repeated transmission of the first control information. The processor 601 is used to determine whether there is repeated transmission of the first control information based on the first indication information, and when the first indication information indicates that there is repeated transmission of the first control information, determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to the first table. The transceiver 603 in the communication device 60 is also used to receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before the communication device 60 is in a connected state.

[0356] In a possible implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0357] In one possible implementation, the first indication information is located in a first message, and the first message further includes a master information block (MIB) carrying second indication information, where the second indication information is used to indicate the time domain position of the second time-frequency resource set. The processor 601 is specifically configured to determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set based on the second indication information, an index value of the first synchronization signal block (SSB), and the first table.

[0358] In a possible implementation, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0359] In one possible embodiment, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0360] In a possible implementation, the first table includes:

[0361]

[0362] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0363] For the rest, please refer to the method of the terminal device in the above embodiment, which will not be described again here.

[0364] like Figure 7 FIG. 7 is a schematic diagram of the structure of another communication device 70 provided in this embodiment. It should be understood that the aforementioned Figure 2A 、 Figure 2B 、 Figure 3 as well as Figure 5 The network device in the corresponding method embodiment can be based on the Figure 7 It should also be understood that when the access network equipment or base station of the subsequent evolution standard executes the method involved in the embodiment of the present application, the access network or base station of the subsequent evolution standard can also adopt the method of the embodiment of the present application. Figure 7 The structure of the communication device 70 is shown.

[0365] The communication device 70 includes at least one processor 701, at least one memory 702, at least one transceiver 703, at least one network interface 705, and one or more antennas 704. The processor 701, memory 702, transceiver 703, and network interface 705 are connected via a connection device, and the antenna 704 is connected to the transceiver 703. The connection device may include various interfaces, transmission lines, or buses, etc., and this embodiment does not limit this.

[0366] The aforementioned network interface 705 is used to connect the communication device 70 to other communication devices via a communication link. Specifically, the network interface 705 may include a network interface between the communication device 70 and a core network element, such as an S1 interface; the network interface 705 may also include a network interface between the communication device 70 and other network devices (such as other access network devices or core network elements), such as an X2 or Xn interface.

[0367] The transceiver 703, the memory 702 and the antenna 704 can refer to Figure 6 The relevant descriptions of the transceiver 603, the memory 602 and the antenna 604 in the corresponding embodiment are not repeated here.

[0368] In addition, the aforementioned processor 701 is mainly used to process the communication protocol and communication data, and to control the entire network device, execute software programs, and process the data of the software programs, for example, to support the communication device 70 in performing the actions described in the aforementioned embodiments. The communication device 70 may include a baseband processor and a central processing unit, wherein the baseband processor is mainly used to process the communication protocol and communication data, and the central processing unit is mainly used to control the entire communication device 70, execute software programs, and process the data of software programs. Figure 7 The processor 701 in the communication device 700 can integrate the functions of a baseband processor and a central processing unit. Those skilled in the art will understand that the baseband processor and the central processing unit can also be independent processors that are interconnected through a bus or other technology. Those skilled in the art will understand that the communication device 70 can include multiple baseband processors to adapt to different network standards, and the communication device 70 can include multiple central processing units to enhance its processing capabilities. The various components of the communication device 70 can be connected through various buses. The baseband processor can also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit can also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and communication data can be built into the processor, or it can be stored in the memory in the form of a software program, and the processor executes the software program to implement the baseband processing function.

[0369] In a possible implementation, the communication device 70 is used to perform the aforementioned Figure 2A or Figure 3 Corresponding to the method in the embodiment. Specifically, in the communication device 70, the transceiver 703 is configured to send first indication information, where the first indication information is used to indicate a first time-frequency resource set, and the first time-frequency resource set and the second time-frequency resource set are used to transmit first control information to a terminal device in a non-connected state. In addition, the transceiver 703 is further configured to send the first control information on the first time-frequency resource set and the second time-frequency resource set, respectively.

[0370] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0371] In an optional implementation, the first indication information is used to indicate the time domain position of the first time-frequency resource set.

[0372] In an optional embodiment, the first indication information and the index value of the first synchronization signal block SSB are used to determine the time domain position of the first time-frequency resource set, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0373] In an optional embodiment, the first indication information includes a first association relationship, where the first association relationship is used to indicate an association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set. The transceiver 703 is further used to send second indication information, where the second indication information is used to indicate the time domain position of the second time-frequency resource set, where the second indication information and the index value of the first SSB are used to determine the time domain position of the second time-frequency resource set, and where the first indication information and the time domain position of the second time-frequency resource set are used to determine the time domain position of the first time-frequency resource set.

[0374] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

[0375] In an optional implementation manner, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

[0376] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0377] In an optional implementation manner, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

[0378] In an optional implementation manner, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0379] In another possible implementation, the communication device 70 is used to perform the aforementioned Figure 2B or Figure 5 The method in the corresponding embodiment.

[0380] Specifically, in the communication device 70, the transceiver 703 is configured to send first indication information, where the first indication information is used to indicate whether repeated transmission of the first control information occurs. The transceiver 703 is further configured to, when the first indication information indicates that repeated transmission of the first control information occurs, send the first control information on a first time-frequency resource set and a second time-frequency resource set, respectively, where the time domain positions of the first time-frequency resource set and the second time-frequency resource set are determined based on the first table.

[0381] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0382] In an optional embodiment, the first indication information is located in a first message, and the first message also includes a main information block MIB carrying second indication information, and the second indication information is used to indicate the time domain position of the second time-frequency resource set; the second indication information, the index value of the first synchronization signal block SSB and the first table are used to determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0383] In an optional implementation, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0384] In an optional embodiment, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0385] In an optional embodiment, the first table includes:

[0386]

[0387] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0388] For the rest, please refer to the method of the network device in the above embodiment, which will not be described in detail here.

[0389] like Figure 8 As shown, the present application also provides another communication device 80 , which can be a terminal device or a chip in the terminal device. The communication device 80 includes: a receiving module 801 and a processing module 802 .

[0390] In a possible implementation, the communication device 80 is used to perform the aforementioned Figure 2A or Figure 3The method in the corresponding embodiment. The receiving module 801 is used to receive a first indication information from a network device before the communication device 80 is in a connected state, and the first indication information is used to indicate a first time-frequency resource set, and the first time-frequency resource set and the second time-frequency resource set are used to transmit the first control information. The processing module 802 is used to determine the time domain position of the first time-frequency resource set according to the first indication information. In addition, the receiving module 801 is also used to receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before the connected state. Optionally, the first control information is used to schedule the system information block SIB1; or, the first control information is control information scrambled by the system message radio network temporary identifier SI-RNTI.

[0391] In an optional implementation, the first indication information is used to indicate the time domain position of the first time-frequency resource set. The receiving module 801 is further configured to determine the time domain position of the first time-frequency resource set according to the first indication information.

[0392] In an optional embodiment, the processing module 802 in the communication device 80 is used to determine the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first synchronization signal block SSB, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0393] In an optional embodiment, the first indication information includes a first association relationship, where the first association relationship is used to indicate an association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set. The processing module 802 is specifically configured to: determine the time domain position of the second time-frequency resource set based on the second indication information and the index value of the first SSB, where the second indication information is used to indicate the time domain position of the second time-frequency resource set; and determine the time domain position of the first time-frequency resource set based on the first indication information and the time domain position of the second time-frequency resource set.

[0394] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

[0395] In an optional implementation manner, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

[0396] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0397] In an optional implementation manner, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

[0398] In an optional implementation manner, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0399] In a possible implementation, the communication device 80 is used to perform the aforementioned Figure 2B or Figure 5 The method in the corresponding embodiment. At this time, the receiving module 801 in the communication device 80 is used to receive first indication information before the communication device 80 is in a connected state, and the first indication information is used to indicate whether there is repeated transmission of the first control information. The processing module 802 is used to determine whether there is repeated transmission of the first control information based on the first indication information, and when the first indication information indicates that there is repeated transmission of the first control information, determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to the first table. The receiving module 801 in the communication device 80 is also used to receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before the communication device 80 is in a connected state.

[0400] In a possible implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0401] In one possible implementation, the first indication information is located in a first message, and the first message further includes a master information block (MIB) carrying second indication information, where the second indication information is used to indicate the time domain location of the second time-frequency resource set. The processing module 802 is specifically configured to determine the time domain location of the first time-frequency resource set and the time domain location of the second time-frequency resource set based on the second indication information, an index value of the first synchronization signal block (SSB), and the first table.

[0402] In a possible implementation, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0403] In one possible embodiment, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0404] In a possible implementation, the first table includes:

[0405]

[0406] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0407] For the rest, please refer to the method of the terminal device in the above embodiment, which will not be described again here.

[0408] like Figure 9 As shown, the present application also provides another communication device 90, which can be a network device or a chip in a network device. Optionally, the network device is an access network device. The communication device 90 includes: a sending module 901 and a processing module 902.

[0409] In a possible implementation, the communication device 90 is used to perform the aforementioned Figure 2A or Figure 3 The method in the corresponding embodiment. Specifically, in the communication device 90, the sending module 902 is used to determine the time-frequency domain position of the first time-frequency resource, and to determine the first indication information indicating the time-frequency domain position of the first time-frequency resource. In addition, the sending module 901 is used to send the aforementioned first indication information, which is used to indicate the first time-frequency resource set, and the first time-frequency resource set and the second time-frequency resource set are used to transmit the first control information to the terminal device in the non-connected state. In addition, the sending module 901 is also used to send the first control information on the first time-frequency resource set and the second time-frequency resource set, respectively.

[0410] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0411] In an optional implementation, the first indication information is used to indicate the time domain position of the first time-frequency resource set.

[0412] In an optional embodiment, the first indication information and the index value of the first synchronization signal block SSB are used to determine the time domain position of the first time-frequency resource set, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0413] In an optional embodiment, the first indication information includes a first association relationship, and the first association relationship is used to indicate the association relationship between the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set. The sending module 901 is further used to send second indication information, and the second indication information is used to indicate the time domain position of the second time-frequency resource set. The second indication information and the index value of the first SSB are used to determine the time domain position of the second time-frequency resource set, and the first indication information and the time domain position of the second time-frequency resource set are used to determine the time domain position of the first time-frequency resource set.

[0414] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

[0415] In an optional implementation manner, the first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

[0416] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0417] In an optional implementation manner, the index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

[0418] In an optional implementation manner, the time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

[0419] In another possible implementation, the communication device 90 is used to perform the aforementioned Figure 2B or Figure 5 The method in the corresponding embodiment. Specifically, in the communication device 90, the processing module 902 is used to determine whether the first control information needs to be repeatedly transmitted, and the first indication information is determined based on the decision result of whether the first control information needs to be repeatedly transmitted. The sending module 901 is used to send the first indication information, and the first indication information is used to indicate whether there is repeated transmission of the first control information. The sending module 901 is also used to send the first control information on the first time-frequency resource set and the second time-frequency resource set respectively when the first indication information indicates that there is repeated transmission of the first control information, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are determined based on the first table.

[0420] In an optional implementation manner, the first control information is used to schedule the system information block SIB1; or, the first control information is control information for scrambling a system message radio network temporary identifier SI-RNTI.

[0421] In an optional embodiment, the first indication information is located in a first message, and the first message also includes a main information block MIB carrying second indication information, and the second indication information is used to indicate the time domain position of the second time-frequency resource set; the second indication information, the index value of the first synchronization signal block SSB and the first table are used to determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0422] In an optional implementation, the first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0423] In an optional embodiment, the first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

[0424] In an optional embodiment, the first table includes:

[0425]

[0426] The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0427] For the rest, please refer to the method of the network device in the above embodiment, which will not be described in detail here.

[0428] During implementation, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or by instructions in the form of software. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in a processor. The software module can be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it will not be described in detail here. It should also be understood that the first, second, third, fourth and various numerical numbers involved in this article are only distinctions made for convenience of description and are not intended to limit the scope of the embodiments of the present application.

[0429] In addition, the present application provides a computer program product, which includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. For example, the aforementioned Figure 2A 、 Figure 2B 、 Figure 3 as well as Figure 5 For example, the method of implementing the network device as described above Figure 2A 、 Figure 2B 、 Figure 3 as well as Figure 5 Methods related to terminal devices in the computer. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid-state disk (SSD)).

[0430] In addition, the present application also provides a computer-readable storage medium, which stores a computer program, which is executed by a processor to implement the above Figure 2A 、 Figure 2B 、 Figure 3 as well as Figure 5 Methods related to terminal devices in.

[0431] In addition, the present application also provides a computer-readable storage medium, which stores a computer program, which is executed by a processor to implement the above Figure 2A 、 Figure 2B 、 Figure 3 as well as Figure 5 Methods related to network devices in .

[0432] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0433] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0434] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. The above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art will understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A control information receiving method, characterized in that: include: The terminal device receives first indication information before being in a connected state, where the first indication information is used to indicate a time domain position of a first time-frequency resource set, and the first time-frequency resource set and the second time-frequency resource set are used to transmit first control information; The terminal device receives the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before being in a connected state; The method further comprises: The terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first synchronization signal block SSB, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

2. The method according to claim 1, characterized in that The first control information is used to schedule the system information block SIB1; or, the first control information is control information scrambled by the system message radio network temporary identifier SI-RNTI.

3. The method according to claim 1, characterized in that The first indication information includes a first association relationship, where the first association relationship is used to indicate an association relationship between a time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set; The terminal device determines, according to the first indication information and the index value of the first synchronization signal block SSB, a time domain position of the first time-frequency resource set, including: The terminal device determines the time domain position of the second time-frequency resource set according to the second indication information and the index value of the first SSB, where the second indication information is used to indicate the time domain position of the second time-frequency resource set; The terminal device determines the time domain position of the first time-frequency resource set based on the first indication information and the time domain position of the second time-frequency resource set.

4. The method according to claim 3, characterized in that The first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

5. The method according to claim 4, characterized in that The first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

6. The method according to claim 3, characterized in that The first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

7. The method according to claim 6, characterized in that The index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

8. The method according to claim 6 or 7, characterized in that The time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

9. A control information receiving method, characterized in that: include: The terminal device receives first indication information before being in a connected state, where the first indication information is used to indicate whether there is repeated transmission of the first control information; When the first indication information indicates that there is repeated transmission of the first control information, the terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to a first table, the first table including a first index value, the first index value corresponding to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponding to the index value of the first symbol in the monitoring window of the second time-frequency resource set; The terminal device receives the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before being in a connected state.

10. The method according to claim 9, characterized in that The first control information is used to schedule the system information block SIB1; or, the first control information is control information scrambled by the system message radio network temporary identifier SI-RNTI.

11. The method according to claim 9 or 10, characterized in that The first indication information is located in a first message, and the first message further includes a master information block MIB carrying second indication information, where the second indication information is used to indicate a time domain position of the second time-frequency resource set; The terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set according to the first table, including: The terminal device determines the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set based on the second indication information, the index value of the first synchronization signal block SSB and the first table.

12. The method according to any one of claims 9 to 10, characterized in that The first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

13. The method according to claim 11, characterized in that The first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

14. The method according to claim 13, wherein: The first table includes: The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

15. A method for sending control information, characterized in that: include: The network device sends first indication information, where the first indication information is used to indicate the time domain position of the first time-frequency resource set, where the first time-frequency resource set and the second time-frequency resource set are used to transmit first control information to a terminal device in a non-connected state, where the first indication information and the index value of the first synchronization signal block SSB are used to determine the time domain position of the first time-frequency resource set, where the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB; The network device sends the first control information on the first time-frequency resource set and the second time-frequency resource set respectively.

16. The method according to claim 15, characterized in that The first control information is used to schedule the system information block SIB1; or, the first control information is control information scrambled by the system message radio network temporary identifier SI-RNTI.

17. The method according to claim 15, characterized in that The first indication information includes a first association relationship, where the first association relationship is used to indicate an association relationship between a time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set; The method further comprises: The network device sends second indication information, where the second indication information is used to indicate the time domain position of the second time-frequency resource set, the second indication information and the index value of the first SSB are used to determine the time domain position of the second time-frequency resource set, and the first indication information and the time domain position of the second time-frequency resource set are used to determine the time domain position of the first time-frequency resource set.

18. The method according to claim 17, characterized in that The first time-frequency resource set and the second time-frequency resource set are located in the same time slot in the time domain.

19. The method according to claim 18, characterized in that The first time-frequency resource set and the second time-frequency resource set are respectively located on consecutive and different symbols in the time slot in the time domain.

20. The method according to claim 17, wherein The first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

21. The method according to claim 20, characterized in that The index value of the symbol in the time slot where the first time-frequency resource set is located is the same as the index value of the symbol in the time slot where the second time-frequency resource set is located.

22. The method according to claim 20 or 21, characterized in that The time slot where the first time-frequency resource set is located is located before the time slot where the second time-frequency resource set is located.

23. A method for sending control information, characterized in that: include: The network device sends first indication information, where the first indication information is used to indicate whether there is repeated transmission of the first control information; When the first indication information indicates that there is repeated transmission of the first control information, the network device sends the first control information on the first time-frequency resource set and the second time-frequency resource set, respectively. The time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are determined based on a first table. The first table includes a first index value, and the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set. The first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

24. The method according to claim 23, wherein The first control information is used to schedule the system information block SIB1; or, the first control information is control information scrambled by the system message radio network temporary identifier SI-RNTI.

25. The method according to claim 23 or 24, characterized in that The first indication information is located in the first message, and the first message also includes a main information block MIB carrying second indication information, and the second indication information is used to indicate the time domain position of the second time-frequency resource set; the second indication information, the index value of the first synchronization signal block SSB and the first table are used to determine the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

26. The method according to any one of claims 23 to 24, characterized in that The first table includes the index value of the first symbol in the monitoring window of the first time-frequency resource set and the index value of the first symbol in the monitoring window of the second time-frequency resource set.

27. The method according to claim 25, characterized in that The first table also includes a first index value determined based on the second indication information, the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

28. The method according to claim 27, characterized in that The first table includes: The index value of the first symbol in the monitoring window of the second time-frequency resource set is 0, and the index value of the first symbol in the monitoring window of the first time-frequency resource set is The O is used to indicate the starting position of the monitoring window of the first SSB; the M is used to indicate the degree of overlap between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

29. A communication device, characterized in that: include: a receiving module, configured to receive first indication information before the connected state, where the first indication information is used to indicate a time domain position of a first time-frequency resource set, and the first time-frequency resource set and the second time-frequency resource set are used to transmit first control information; The receiving module is further configured to receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before the connected state; A processing module is used to determine the time domain position of the first time-frequency resource set based on the first indication information and the index value of the first synchronization signal block SSB, and the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

30. A communication device, characterized in that: include: A receiving module, configured to receive first indication information before the connected state, where the first indication information is used to indicate whether there is repeated transmission of the first control information; a processing module, configured to, when the first indication information indicates that there is repeated transmission of the first control information, determine, according to a first table, a time domain position of a first time-frequency resource set and a time domain position of a second time-frequency resource set, wherein the first table includes a first index value, the first index value corresponding to an index value of a first symbol in a monitoring window of the first time-frequency resource set, and the first index value corresponding to an index value of a first symbol in a monitoring window of the second time-frequency resource set; The receiving module is further configured to receive the first control information on the first time-frequency resource set and the second time-frequency resource set respectively before the connection state.

31. A communication device, characterized in that: include: a sending module, configured to send first indication information, where the first indication information is used to indicate a time domain position of a first time-frequency resource set, where the first time-frequency resource set and the second time-frequency resource set are used to transmit first control information to a terminal device in a non-connected state, where the first indication information and the index value of the first synchronization signal block SSB are used to determine the time domain position of the first time-frequency resource set, where the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are both related to the index value of the first SSB; The sending module is further used to send the first control information on the first time-frequency resource set and the second time-frequency resource set respectively.

32. A communication device, characterized in that: include: a sending module, configured to send first indication information, where the first indication information is used to indicate whether there is repeated transmission of the first control information; The sending module is also used to send the first control information on the first time-frequency resource set and the second time-frequency resource set, respectively, when the first indication information indicates that there is repeated transmission of the first control information. The time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set are determined based on a first table. The first table includes a first index value, and the first index value corresponds to the index value of the first symbol in the monitoring window of the first time-frequency resource set. The first index value corresponds to the index value of the first symbol in the monitoring window of the second time-frequency resource set.

33. A communication device, characterized in that: including processor and memory; wherein the memory stores a computer program; The processor calls the computer program in the memory to enable the communication device to perform the method according to any one of claims 1 to 8, or the method according to any one of claims 9 to 14.

34. A communication device, characterized in that: including processor and memory; wherein the memory stores a computer program; The processor calls the computer program in the memory to enable the communication device to perform the method according to any one of claims 15 to 22, or the method according to any one of claims 23 to 28.

35. A communication system, characterized in that: include: A terminal device that performs the method according to any one of claims 1 to 8, and a network device that performs the method according to any one of claims 15 to 22; or, A terminal device that performs the method according to any one of claims 9 to 14, and a network device that performs the method according to any one of claims 23 to 28.

36. A computer-readable storage medium storing instructions, which, when executed on a computer, causes the computer to execute the method according to any one of claims 1 to 8, or the method according to any one of claims 9 to 14, or the method according to any one of claims 15 to 22, or the method according to any one of claims 23 to 28.

37. A computer program product comprising instructions which, when run on a computer, causes the computer to perform the method according to any one of claims 1 to 8, or the method according to any one of claims 9 to 14, or the method according to any one of claims 15 to 22, or the method according to any one of claims 23 to 28.

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