Control information transmission method, control information reception method, and communication device

Abstract

The embodiment of the invention provides a control information sending (or receiving) method and a related communication device, and the method comprises the steps: enabling a terminal device before entering a connection state to receive control information on at least two time-frequency resources through adding the time-frequency resources for repeatedly sending the control information, namely, the terminal device may receive at least two pieces of control information. Since the network device increases the time-frequency resource for sending the control information to the terminal device, and the network device increases the number of times of sending the control information, the probability of correctly receiving the control information by the terminal device can be improved.

Description

[0001] This application is a divisional application, the original application number is 202110745368.0, the original application date is June 30, 2021, and the entire contents of the original application are incorporated herein by reference. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of communication, in particular to a control information sending method, a control information receiving method and a communication device. BACKGROUND

[0003] In the new radio (NR) technology in the fifth generation (5G) mobile communication system, a synchronization signal / broadcast channel block (SS / PBCH block, SSB) is defined. Among them, one SSB contains a primary synchronization signal (PSS), a secondary synchronization signal (SSS) and a physical broadcast channel (PBCH).

[0004] Generally, in the process of terminal device accessing the network, the terminal device will first receive the SSB sent by the network device. Among them, the PBCH in the SSB carries information indicating the time-frequency domain position of the time-frequency resource set where the physical downlink control channel (PDCCH) is located, and the PDCCH carries the downlink control information (DCI) sent by the network device to the terminal device. Then, the terminal device receives the PDCCH according to the indication of the PBCH and obtains the DCI therein.

[0005] However, in actual application, due to the possible long distance between the terminal device and the network device, the signal-to-noise ratio (SNR) of these terminal devices is extremely low, so that the terminal devices far away from the network device often have a low accuracy in receiving the DCI. SUMMARY

[0006] Embodiments of the present application provide a control information sending (or receiving) method and a communication device, which can improve the probability of correctly receiving the control information before the connected state.

[0007] In a first aspect, the present application provides a method for receiving control information, which involves a terminal device and a network device. The terminal device receives first indication information from the network device before entering a connected state, where the first indication information is used to indicate a first time-frequency resource set and a second 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. Then, the terminal device receives the first control information transmitted by the network device on the first time-frequency resource set and the second time-frequency resource set before entering the connected state.

[0008] The first time-frequency resource set and the second time-frequency resource set are time-frequency resources configured by the network device for transmitting the first control information. The first control information is carried in one or more time-frequency resources of the first time-frequency resource set. For the sake of convenience, the first control information is referred to as being carried in a first time-frequency resource of the first time-frequency resource set in the following description, i.e., when the 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 of the second time-frequency resource set. For the sake of convenience, the first control information is referred to as being carried in a second time-frequency resource of the second time-frequency resource set in the following description, i.e., when the 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 one time-frequency resource, such as one resource block (RB) or one resource element (RE), or multiple time-frequency resources, such as multiple resource blocks (RBs) or multiple resource elements (REs). The specific number is not limited here.

[0009] Optionally, the network device configures the time-frequency resource set for the terminal device by sending indication information to the terminal device, or informs the terminal device of the configuration of the time-frequency resource set. For example, the network device sends the first indication information to the terminal device to configure the first time-frequency resource set for the terminal device or to inform the terminal device that the first time-frequency resource set is not configured for the terminal device. For another example, the network device sends the second indication information to the terminal device to configure the second time-frequency resource set for the terminal device.

[0010] In this embodiment, the terminal device can receive first indication information indicating a first time-frequency resource set before the terminal device is in the connected state, and the first time-frequency resource set and the second time-frequency resource set are both used to transmit the first control information. Thus, 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, the network device not only transmits the first control information to the terminal device on the first time-frequency resource set, but also transmits the first control information to the terminal device on the second time-frequency resource set. Therefore, the terminal device can receive the first control information on the first time-frequency resource set or the second time-frequency resource set. Compared with the scheme in the prior art in which the terminal device in the non-connected state only receives the first control information on the second time-frequency resource set, the terminal device in 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 correctly receiving the first control information by the terminal device can be improved.

[0011] In an optional embodiment, the first control information is used to schedule a system information block SIB1, or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0012] In this embodiment, the type of the first control information is specified. Generally, different types of control information have different functions and are used to schedule different resources. In this embodiment, it is proposed that the first control information is used to schedule a system information block SIB1. That is, the first control information transmitted by the network device to the terminal device is used to indicate information related to the SIB1 to the terminal device, rather than being used to schedule other information or resources. In addition, since the control information used to schedule the SIB1 is generally control information scrambled by the SI-RNTI, the first control information can also be understood as control information scrambled by the SI-RNTI.

[0013] 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 an index value of a first synchronization signal block SSB, and the first time-frequency resource set and the second time-frequency resource set are both a set of time-frequency resources of a candidate set of control channels.

[0014] 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.

[0015] In this embodiment, the terminal device uses the same index value of the SSB (i.e., the index value of the first SSB) when determining the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set, 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 reducing the complexity of the terminal device in acquiring the index value of the SSB for determining the first time-frequency resource.

[0016] It should be understood that when the network device configures a certain time-frequency resource for the terminal device, the network device indicates to the terminal device a time-frequency resource set containing 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 carrying 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 in which 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 in which the second time-frequency resource is located.

[0017] In an optional embodiment, the first indication information is used to indicate the time domain position of the first time-frequency resource set; and the method further includes: determining, by the terminal device, the time domain position of the first time-frequency resource set according to the first indication information.

[0018] In this embodiment, it is proposed that the aforementioned first indication information can directly or indirectly indicate the time domain position of the first time-frequency resource set. Therefore, the terminal device can determine the time domain position 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.

[0019] 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 to the terminal device the time-frequency domain position of the first time-frequency resource set (including the time domain position and / or the frequency domain position of the time-frequency resource set). Optionally, the network device indicates to the terminal device the time-frequency domain position of the first time-frequency resource set in a displayed 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 to the terminal device the time-frequency domain position of the first time-frequency resource set in an implicit manner, for example, the first indication information sent by the network device to the terminal device indicates the content related to another time-frequency resource set (e.g., 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 another time-frequency resource set (e.g., the second time-frequency resource set).

[0020] In an optional implementation, the terminal device determines the time domain position of the first time-frequency resource set according to the first indication information, including: the terminal device determines the time domain position of the first time-frequency resource set according to the first indication information and an index value of a 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.

[0021] 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, if 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, 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 can receive the first control information from the first time-frequency resource in the first time-frequency resource set and the second time-frequency resource in the second time-frequency resource set respectively within a short time range (for example, one time slot or two adjacent time slots), that is, the terminal device can receive at least two copies of the first control information within a short time range. Therefore, it is beneficial to reduce the time delay of the terminal device in receiving the first control information, and also beneficial to improve the efficiency of the terminal device in successfully receiving the first control information.

[0022] In an optional implementation, the first indication information includes a first association relationship, the first association relationship being 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; and the terminal device determines the time domain position of the first time-frequency resource set according to the first indication information, including: the terminal device determines the time domain position of the first time-frequency resource set according to the first indication information and the time domain position of the second time-frequency resource set.

[0023] 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, the first association relationship being 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. Therefore, in the case that the terminal device can obtain 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 beneficial to the terminal device in 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.

[0024] 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 sends second indication information to the terminal device by using a conventional technology, and the second indication information can directly indicate the time-frequency domain position of the second time-frequency resource to the terminal device (including the time domain position of the second time-frequency resource). 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.

[0025] In an optional implementation, the first indication information includes a first association relationship, and 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 terminal device determines the time domain position of the first time-frequency resource set according to 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 according to 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; and the terminal device determines the time domain position of the first time-frequency resource set according to the first indication information and the time domain position of the second time-frequency resource set.

[0026] In the embodiment, the first indication information indicates the content related to another time-frequency resource set (i.e., the second time-frequency resource set), 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 a reference table (for example, table 13-11 or table 13-12 in the 3GPP protocol) and perform calculation in the process of determining the second time-frequency resource set, and can directly determine 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 when determining the time domain position of the first time-frequency resource set, without the need for table lookup and calculation again, which 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 to the terminal device in quickly determining the time domain position of the first time-frequency resource and reducing the time delay of determining the time domain position of the first time-frequency resource.

[0027] 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.

[0028] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located on continuous and different symbols in the time slot in the time domain, respectively.

[0029] In the embodiment, 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 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 copies of the first control information on the continuous symbols in the time slot, without the terminal device additionally monitoring the control channel 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 save the time required by the terminal device to obtain the first control information and improve the success rate of the terminal device receiving the first control information.

[0030] In an optional embodiment, the first time-frequency resource set and the second time-frequency resource set are respectively located in different time slots in the time domain.

[0031] In an optional embodiment, 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.

[0032] In the embodiment, 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, and the terminal device can receive at least two copies of the first control information on the continuous and different time slots. The terminal device does not need to monitor the control channel on the non-continuous time slots (for example, the time slot with an index value of 0 and the time slot with an index value of 3), which is beneficial to the terminal device to obtain the first control information in a relatively short time and improve the success rate of the terminal device receiving the first control information.

[0033] In an optional embodiment, the time slot where the first time-frequency resource set is located is before the time slot where the second time-frequency resource set is located.

[0034] In the embodiment, since the time slot is a concept in the time domain, the time slot where the first time-frequency resource set is located is before the time slot where the second time-frequency resource set is located, which means that the network device can send the first control information to the terminal device on the first time-frequency resource set earlier than sending the first control information to the terminal device on the second time-frequency resource set. Therefore, compared with the scheme of receiving the first control information only from the second time-frequency resource set, the terminal device can receive the first control information earlier, which is beneficial to shorten the time required by the terminal device to receive the first control information.

[0035] It should be noted that the embodiments of the present application have a variety of other specific embodiments, which can be specifically referred to the specific embodiments of the first aspect and the beneficial effects thereof, which will not be described here.

[0036] In a second aspect, the present application provides a method for receiving control information, which involves a terminal device and a network device. The terminal device receives first indication information before a connected state, 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 terminal device determines the time domain position of a first time-frequency resource set and the time domain position of a second time-frequency resource set according to a 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 the connected state.

[0037] The first indication information is used to indicate whether there is repeated transmission of the first control information, which can also be understood as the first indication information being used to indicate whether the first control information needs to be repeatedly transmitted, which can also be understood as the first indication information being used to indicate whether there is a time domain resource set (for example, the first time-frequency resource set) for repeatedly transmitting the first control information, which can also be understood as the first indication information being used to indicate whether there is a time domain resource (for example, a first time-frequency resource in the first time-frequency resource set) for repeatedly transmitting the first control information. The specific embodiments are not limited here.

[0038] 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 according to a row in the first table. That is, after the terminal device determines an index value for table lookup based on certain indication information, the terminal device can determine a row of parameters in the first table based on the index value, 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 row of parameters in the first table without querying the parameters of other rows in the first table.

[0039] In this embodiment, the terminal device can receive first indication information indicating whether the first control information is repeatedly transmitted before the terminal device is in 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., a first table), and the terminal device can determine two time-frequency resource sets (i.e., a first time-frequency resource set and a second time-frequency resource set) for transmitting the first control information according to the first table. Then, the terminal device receives the first control information on the first time-frequency resource set and the second time-frequency resource set. That is, the network device not only transmits the first control information to the terminal device on the first time-frequency resource set, but also transmits the first control information to the terminal device on the second time-frequency resource set. Therefore, the terminal device can receive the first control information on the first time-frequency resource set or the second time-frequency resource set. Compared with the scheme in the prior art in which the terminal device in the non-connected state only receives the first control information on the second time-frequency resource set, the terminal device in 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 correctly receiving the first control information by the terminal device can be improved.

[0040] In an optional embodiment, the first control information is used for scheduling a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0041] In this embodiment, the type of the first control information is specified. Generally, different types of control information have different functions and are used to schedule different resources. In this embodiment, it is proposed that the first control information is used for scheduling a system information block SIB1. That is, the first control information transmitted by the network device to the terminal device is used to indicate SIB1-related information to the terminal device, rather than being used to schedule other information or resources. In addition, since the control information used to schedule SIB1 is generally control information scrambled by an SI-RNTI, the first control information can also be understood as control information scrambled by an SI-RNTI.

[0042] In an optional embodiment, 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, the second indication information being used to indicate the time domain position of the second time-frequency resource set; and 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, an index value of a first synchronization signal block SSB, and the first table.

[0043] In an optional implementation, the first table comprises an index value of a first symbol in a monitoring window of the first set of time-frequency resources and an index value of a first symbol in a monitoring window of the second set of time-frequency resources.

[0044] In an optional implementation, the first table further comprises a first index value determined based on the second indication information, the first index value corresponding to the index value of the first symbol in the monitoring window of the first set of time-frequency resources, and the first index value corresponding to the index value of the first symbol in the monitoring window of the second set of time-frequency resources.

[0045] Optionally, the terminal device determines a first index value according to the second indication information, the first index value being used to query the index value of the first symbol in the monitoring window of the first set of time-frequency resources and the index value of the first symbol in the monitoring window of the second set of time-frequency resources in the first table. The first index value corresponds to the index value of the first symbol in the monitoring window of the first set of time-frequency resources, and the first index value corresponds to the index value of the first symbol in the monitoring window of the second set of time-frequency resources. The terminal device determines the index value of the first symbol in the monitoring window of the first set of time-frequency resources and the index value of the first symbol in the monitoring window of the second set of time-frequency resources according to the first index value and the first table.

[0046] In the embodiment, the terminal device queries the first table based on the first index value to obtain two index values of the first symbol (i.e., the index value of the first symbol in the monitoring window of the first set of time-frequency resources and the index value of the first symbol in the monitoring window of the second set of time-frequency resources) in one table lookup operation. In the prior art, the first index value determined based on the second indication information can only query one index value of the first symbol (i.e., the index value of the first symbol in the monitoring window of the second set of time-frequency resources). Therefore, the scheme proposed in the embodiment is beneficial to reducing the number of times of querying the reference table by the terminal device and is beneficial to quickly determining the time domain position of the first set of time-frequency resources and the time domain position of the second set of time-frequency resources by the terminal device.

[0047] In an optional implementation, the first table comprises:

[0048]

[0049] wherein the index value of the first symbol in the monitoring window of the second set of time-frequency resources is 0, and the index value of the first symbol in the monitoring window of the first set of time-frequency resources is The O is used to indicate the starting position of the monitoring window of the first SSB; and 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.

[0050] In a third aspect, the present application provides a control information sending method, which involves a terminal device and a network device. The network device sends first indication information, which is used to indicate a first time-frequency resource set and a second 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; and the network device sends the first control information on the first time-frequency resource set and the second time-frequency resource set respectively.

[0051] In an optional implementation, the first control information is used to schedule a system information block (SIB1); or the first control information is control information scrambled by a system message radio network temporary identifier (SI-RNTI).

[0052] In an optional implementation, the first indication information is used to indicate a time domain position of the first time-frequency resource set.

[0053] In an optional implementation, the first indication information and an index value of a first synchronization signal block (SSB) are used to determine a time domain position of the first time-frequency resource set, and the time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set are both related to the index value of the first SSB.

[0054] In an optional implementation, the first indication information includes a first association relationship, which 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; and the method further includes that the network device sends second indication information, which is used to indicate the time domain position of the second time-frequency resource set, and 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.

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

[0057] 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.

[0058] In an optional implementation, an index value of a symbol in a time slot where the first time-frequency resource set is located is the same as an index value of a symbol in a time slot where the second time-frequency resource set is located.

[0059] In an optional implementation, the time slot where the first time-frequency resource set is located is before the time slot where the second time-frequency resource set is located.

[0060] It should be noted that the embodiments of the present application have various other specific implementations, which can be specifically referred to the specific implementations and advantages of the first aspect, and will not be described here.

[0061] In a fourth aspect, the present application provides a control information sending method, which involves a terminal device and a network device. The network device sends first indication information, which is 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 sends the first control information on a first time-frequency resource set and a second time-frequency resource set respectively, 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 a first table.

[0062] In an optional implementation, the first control information is used to schedule a system information block SIB1, or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0063] 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, which is used to indicate the time domain position of the second time-frequency resource set; the second indication information, the index value of a 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.

[0064] In an optional implementation, the first table contains 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.

[0065] In an optional implementation, the first table further 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.

[0066] In an optional implementation, the first table includes:

[0067]

[0068] In an optional implementation, 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 a starting position of a monitoring window of the first SSB; and the M is used to indicate an overlapping degree between the monitoring window of the first SSB and a monitoring window of a neighboring SSB.

[0069] It should be noted that the embodiments of the present application have various other specific implementation manners, and specific implementation manners and advantages thereof can be referred to the specific implementation manners of the second aspect, which will not be described herein.

[0070] In a fifth aspect, the present application provides a terminal device, comprising:

[0071] a receiving module, configured to receive first indication information before a connected state, the first indication information being used to indicate a first time-frequency resource set, the first time-frequency resource set and a second time-frequency resource set being used to transmit first control information;

[0072] 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.

[0073] In an optional implementation manner, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0074] In an optional implementation manner, the first indication information is used to indicate a time domain position of the first time-frequency resource set. The terminal device further comprises a processing module, configured to determine the time domain position of the first time-frequency resource set according to the first indication information.

[0075] In an optional implementation manner, the processing module is specifically configured to determine the time domain position of the first time-frequency resource set according to the first indication information and an index value of a first synchronization signal block SSB, the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set both being related to the index value of the first SSB.

[0076] In an optional implementation manner, the first indication information comprises a first association relationship, the first association relationship being 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.

[0077] The processing module is specifically configured to determine the time domain position of the second time-frequency resource set according to second indication information and the index value of the first SSB, the second indication information being 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 according to the first indication information and the time domain position of the second time-frequency resource set.

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

[0080] 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.

[0081] In an optional implementation, 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.

[0082] In an optional implementation, the time slot where the first time-frequency resource set is located is before the time slot where the second time-frequency resource set is located.

[0083] It should be noted that the embodiments of the present application have a variety of other specific implementations, and specific implementations and benefits can be referred to the specific implementations of the first aspect and its benefits, which will not be described here.

[0084] In a sixth aspect, the present application provides a terminal device, comprising a receiving module and a processing module. The receiving module is configured to receive first indication information before the connected state, the first indication information being used to indicate whether there is repeated transmission of first control information. The processing module is 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 according to a first table when the first indication information indicates that there is repeated transmission of the 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.

[0085] In an optional implementation, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0086] In an optional implementation, the first indication information is located in a first message, and the first message further comprises a master information block MIB carrying second indication information, the second indication information being used to indicate the time domain position of the second time-frequency resource set.

[0087] 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 according to the second indication information, the index value of the first synchronization signal block SSB and the first table.

[0088] In an optional implementation, the first table contains 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.

[0089] In an optional implementation, the first table further includes a first index value determined based on the second indication information, the first index value corresponding to an index value of a first symbol in a monitoring window of the first set of time-frequency resources, and the first index value corresponding to an index value of a first symbol in a monitoring window of the second set of time-frequency resources.

[0090] In an optional implementation, the first table includes:

[0091]

[0092] wherein the index value of the first symbol in the monitoring window of the second set of time-frequency resources is 0, and the index value of the first symbol in the monitoring window of the first set of time-frequency resources is The O is used to indicate a starting position of the monitoring window of the first SSB; and the M is used to indicate an overlapping degree between the monitoring window of the first SSB and a monitoring window of a neighboring SSB.

[0093] It should be noted that the embodiments of the present application have various other specific implementations, which can be specifically referred to the specific implementations and advantages of the second aspect, and will not be described here.

[0094] In a seventh aspect, the present application provides a network device, comprising:

[0095] a sending module configured to send first indication information, the first indication information being used to indicate a first set of time-frequency resources, the first set of time-frequency resources and a second set of time-frequency resources being used to transmit first control information to a terminal device in a non-connected state;

[0096] The sending module is further configured to send the first control information on the first set of time-frequency resources and the second set of time-frequency resources respectively.

[0097] In an optional implementation, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0098] In an optional implementation, the first indication information is used to indicate a time domain position of the first set of time-frequency resources.

[0099] In an optional implementation, the first indication information and an index value of a first synchronization signal block SSB are used to determine a time domain position of the first set of time-frequency resources, the time domain position of the first set of time-frequency resources and a time domain position of the second set of time-frequency resources both being related to the index value of the first SSB.

[0100] In an optional implementation, the first indication information comprises a first association relationship, and 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.

[0101] The sending module is further configured to send second indication information, the second indication information being 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 being 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 being used to determine the time domain position of the first time-frequency resource set.

[0102] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in a same time slot in the time domain.

[0103] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in continuous and different symbols in the time slot in the time domain, respectively.

[0104] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain, respectively.

[0105] In an optional implementation, an index value of a symbol in a time slot where the first time-frequency resource set is located is same as an index value of a symbol in a time slot where the second time-frequency resource set is located.

[0106] In an optional implementation, a time slot where the first time-frequency resource set is located is located before a time slot where the second time-frequency resource set is located.

[0107] It should be noted that the embodiments of the present application have a variety of other specific implementations, and specific implementations and beneficial effects can be referred to the specific implementations of the first aspect and its beneficial effects, which will not be described here.

[0108] In an eighth aspect, the present application provides a network device, comprising:

[0109] The sending module is configured to send first indication information, the first indication information being used to indicate whether there is a repeated transmission of first control information.

[0110] The sending module is further configured to send the first control information on a first time-frequency resource set and a second time-frequency resource set respectively when the first indication information indicates that there is a repeated transmission of the first control information, and a time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set are determined based on a first table.

[0111] In an optional implementation, the first control information is used for scheduling a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0112] In an optional implementation, the first indication information is located in a first message, and the first message further comprises a master information block MIB carrying second indication information, the second indication information being used for indicating a time domain position of the second time-frequency resource set; the second indication information, an index value of a first synchronization signal block SSB, and the first table are used for determining the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set.

[0113] In an optional implementation, the first table comprises an index value of a first symbol in a monitoring window of the first time-frequency resource set and an index value of a first symbol in a monitoring window of the second time-frequency resource set.

[0114] In an optional implementation, the first table further comprises a first index value determined based on the second indication information, 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.

[0115] In an optional implementation, the first table comprises:

[0116]

[0117] wherein 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 for indicating a starting position of a monitoring window of the first SSB; and the M is used for indicating an overlapping degree between the monitoring window of the first SSB and a monitoring window of an adjacent SSB.

[0118] It should be noted that the embodiments of the present application have various other specific implementations, and specific implementations and advantages thereof can be referred to the specific implementations and advantages of the second aspect, which will not be described here.

[0119] In a ninth aspect, an embodiment of the present application provides a communication apparatus, which can be the terminal device in the foregoing embodiments, or a chip in the terminal device. The communication apparatus can include a processing module and a transceiver module. When the communication apparatus is the terminal device, the processing module can be a processor, and the transceiver module can be a transceiver. The terminal device can further include a storage module, which can be a memory. The storage module is configured to store instructions, and the processing module executes the instructions stored in the storage module, so that the terminal device performs the method in the first aspect or any of the implementation forms of the first aspect, or the method in the second aspect or any of the implementation forms of the second aspect. When the communication apparatus is a chip in the terminal device, the processing module can be a processor, and the transceiver module can be an input / output interface, a pin, or a circuit, etc. The processing module executes the instructions stored in the storage module, so that the terminal device performs the method in the first aspect or any of the implementation forms of the first aspect, or the method in the second aspect or any of the implementation forms of the second aspect. The storage module can be a storage module (for example, a register, a cache, etc.) in the chip, or a storage module (for example, a read-only memory, a random access memory, etc.) outside the chip in the terminal device.

[0120] In a tenth aspect, an embodiment of the present application provides a communication apparatus, which can be the network device in the foregoing embodiments, or a chip in the network device. The communication apparatus can include a processing module and a transceiver module. When the communication apparatus is the network device, the processing module can be a processor, and the transceiver module can be a transceiver. The network device can further include a storage module, which can be a memory. The storage module is configured to store instructions, and the processing module executes the instructions stored in the storage module, so that the network device performs the method in the third aspect or any of the implementation forms of the third aspect, or the method in the fourth aspect or any of the implementation forms of the fourth aspect. When the communication apparatus is a chip in the network device, the processing module can be a processor, and the transceiver module can be an input / output interface, a pin, or a circuit, etc. The processing module executes the instructions stored in the storage module, so that the network device performs the method in the third aspect or any of the implementation forms of the third aspect, or the method in the fourth aspect or any of the implementation forms of the fourth aspect. The storage module can be a storage module (for example, a register, a cache, etc.) in the chip, or a storage module (for example, a read-only memory, a random access memory, etc.) outside the chip in the network device.

[0121] In an eleventh aspect, the present application provides a communication apparatus, which can be an integrated circuit chip. The integrated circuit chip comprises a processor. The processor is coupled to a memory for storing a program or instructions, which when executed by the processor, cause the communication apparatus to perform the method according to the first aspect or any one of the embodiments of the first aspect, or the method according to the second aspect or any one of the embodiments of the second aspect.

[0122] In a twelfth aspect, the present application provides a communication apparatus, which can be an integrated circuit chip. The integrated circuit chip comprises a processor. The processor is coupled to a memory for storing a program or instructions, which when executed by the processor, cause the communication apparatus to perform the method according to the third aspect or any one of the embodiments of the third aspect, or the method according to the fourth aspect or any one of the embodiments of the fourth aspect.

[0123] In a thirteenth aspect, the embodiments of the present application provide a computer program product comprising instructions, which when executed on a computer, cause the computer to perform the method according to any one of the embodiments of the first aspect, the second aspect, the third aspect and the fourth aspect, and the embodiments of the respective aspects.

[0124] In a fourteenth aspect, the embodiments of the present application provide a computer readable storage medium comprising instructions, which when executed on a computer, cause the computer to perform the method according to any one of the embodiments of the first aspect, the second aspect, the third aspect and the fourth aspect, and the embodiments of the respective aspects.

[0125] In a fifteenth aspect, the embodiments of the present application provide a communication system, which comprises the terminal device according to the first aspect and any one of the embodiments of the first aspect, and the network device according to the third aspect and any one of the embodiments of the third aspect; or the communication system comprises the terminal device according to the second aspect and any one of the embodiments of the second aspect, and the network device according to the fourth aspect and any one of the embodiments of the fourth aspect. BRIEF DESCRIPTION OF DRAWINGS

[0126] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some of the embodiments of the present application.

[0127] FIG. 1 A schematic diagram of a scenario to which the control information sending (or receiving) method of the present application is applied;

[0128] FIG. 2A A flowchart of the control information sending (or receiving) method of the present application;

[0129] FIG. 2B Another flowchart of a method of transmitting (or receiving) control information in the present application;

[0130] FIG. 3 Another flowchart of a method of transmitting (or receiving) control information in the present application;

[0131] FIG. 4A Another schematic diagram of time domain locations of the first set of time-frequency resources and the second set of time-frequency resources in the present application;

[0132] FIG. 4B Another schematic diagram of time domain locations of the first set of time-frequency resources and the second set of time-frequency resources in the present application;

[0133] FIG. 5 Another flowchart of a method of transmitting (or receiving) control information in the present application;

[0134] FIG. 6 A schematic diagram of one embodiment of a communication device in the present application;

[0135] FIG. 7 A schematic diagram of another embodiment of a communication device in the present application;

[0136] FIG. 8 A schematic diagram of another embodiment of a communication device in the present application;

[0137] FIG. 9 A schematic diagram of another embodiment of a communication device in the present application. DETAILED DESCRIPTION

[0138] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application.

[0139] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0140] For the convenience of understanding, some terms related to the embodiments of the present application are introduced as follows:

[0141] Time-frequency resource: refers to a physical resource carrying a channel. Generally, time-frequency resources can be represented by resource blocks (RBs) and resource elements (REs) according to different division granularities. One RB occupies one symbol (for example, an orthogonal frequency division multiplexing (OFDM) symbol) in the time domain 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.

[0142] Control resource set (CORESET): refers to a set of time-frequency resources carrying a control channel (for example, a PDCCH). Generally, the basic unit of a CORESET is a resource element group (REG), and one REG corresponds to one PRB in one OFDM symbol. The number of REGs included in a CORESET is generally an integer multiple of 6.

[0143] Search space (SS): refers to a set of candidate control channels. Generally, the set of candidate control channels of a given aggregation level is defined as a search space, so a search space set can be a set of search spaces including multiple different aggregation levels.

[0144] Control channel element (CCE): can be composed of multiple resource element groups (REGs). For example, one REG is composed of one RB (i.e., 12 REs). Generally, the number of REGs included in different CCEs is different.

[0145] 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 traditional technologies. Optionally, demodulation can include at least one of channel estimation, demodulation, and decoding.

[0146] Radio network temporary identifier (RNTI) is used to identify terminal devices. For example, in practical applications, the RNTI can be used as a mask to scramble the cyclic redundancy check (CRC) bit sequence obtained from the downlink control information (DCI) payload. The RNTI value can be predefined by the standard or configured by higher-layer signaling. Optionally, different RNTIs can also distinguish the functions of different DCIs. For example, DCIs scrambled with different RNTI values ​​can be used to indicate the time-domain and / or frequency-domain resources of physical downlink shared channels (PDSCHs) of different data types. For instance, a DCI scrambled with SI-RNTI is used to schedule PDSCHs carrying system information; a DCI scrambled with C-RNTI is used to schedule PDSCHs specific to the terminal device.

[0147] The following section will first introduce the system architecture and application scenarios to which the control information sending (or receiving) method proposed in this application is adapted:

[0148] The control information transmission (or reception) method proposed in this application can be applied to 5G NR systems, the 6th generation mobile communication technology (6G) systems, and subsequent evolution standards, and this application does not limit it.

[0149] like FIG. 1 As shown, the system includes terminal device 01 and network device 02. During the process of terminal device 01 accessing the network, terminal device 01 first receives the SSB sent by network device 02. The PBCH in this 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 network device 02 to terminal device 01. Then, terminal device 01 receives the PDCCH according to the indication of the PBCH and obtains the DCI within it.

[0150] In the conventional technology, the network device 02 can send indication information indicating time-frequency domain position of a control resource set to the terminal device 01. Then, the terminal device 01 determines time-frequency domain position of time-frequency resource of a control channel (e.g., a downlink control channel PDCCH) based on the aforementioned indication information and other information, so that the terminal device 01 receives control information (e.g., downlink control information DCI) on the time-frequency resource of the aforementioned control channel. In this process, the network device 02 only sends the control information to the terminal device 01 once and does 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 operation of the terminal device 01, for example, affect the terminal device 01 to demodulate a data channel based on the control information.

[0151] To this end, the embodiments of the present application provide a control information sending (or receiving) method and related communication device, by adding time-frequency resources for repeatedly sending control information, so that the terminal device can receive control information on at least two time-frequency resources, i.e., 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, and increases the number of control information that the terminal device can receive, it can improve the probability of the terminal device correctly receiving the control information. Specifically, the following FIG. 2A and FIG. 2B The corresponding embodiments will be described in detail.

[0152] It should be noted that the terminal device involved in the present application includes a device that provides voice and / or data connectivity to a user. For example, it can 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)) through a radio access network (RAN), and can exchange voice and / or data with the RAN. The terminal device can also be referred to as a terminal, user equipment (UE), wireless terminal device, mobile terminal (MT) device, subscriber unit, subscriber station, mobile station (MS), mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user device, etc. In addition, the terminal device can be a mobile phone, a tablet computer (Pad), 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 smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present application do not limit the specific technology and specific device form of the terminal device.

[0153] It should be understood that the terminal device in the embodiments of the present application can be any of the above devices or chips, and the specific form is not limited here. Whether as a device or as a chip, the terminal device can be manufactured, sold or used as an independent product. In the present embodiment and subsequent embodiments, only the terminal device is taken as an example for introduction.

[0154] In addition, the network device involved in the present application can be any kind of device with wireless transceiving function, which can be used to be responsible for functions related to air interface, such as wireless link maintenance function, wireless resource management function, and part of mobility management function. The wireless link maintenance function is used to maintain the wireless link with the terminal device, and is responsible for the protocol conversion between the wireless link data and the internet protocol (IP) data. The wireless resource management function can include functions such as establishment and release of wireless link, scheduling and allocation of wireless resources, etc. The part of mobility management function can include functions such as configuring the terminal device to perform measurement, evaluating the wireless link quality of the terminal device, and deciding the handover of the terminal device between cells, etc. Exemplarily, the network device can be a radio access network (RAN) currently serving the terminal device. For example, the network device can include a next generation node B (gNB) in a 5G new radio (NR) system, or can also include a centralized unit (CU) and a distributed unit (DU) in a cloud RAN system. The network device can also include a node (such as xNodeB) in a 6G system. The specific network device is not limited here.

[0155] It should be understood that the network device in the embodiments of the present application can be any of the above devices or chips in the above devices, and the specific network device is not limited here. Whether as a device or as a chip, the network device can be manufactured, sold or used as an independent product. In the present embodiment and subsequent embodiments, only the network device is taken as an example for introduction.

[0156] The following will be described in combination with FIG. 2A A main flow of the control information sending (or receiving) method proposed in the present application is introduced, in which the terminal device and the network device can perform the following steps before the terminal device enters the connected state:

[0157] 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.

[0158] 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 used to schedule system information block SIB1; or the first control information is control information scrambled by system message radio network temporary identifier SI-RNTI.

[0159] The first time-frequency resource set is used for transmitting first control information. It can be understood that the first time-frequency resource set includes a plurality of time-frequency resources, and a first time-frequency resource in the plurality of time-frequency resources carries a control channel (for example, a physical downlink control channel (PDCCH)) for transmitting the first control information. The first time-frequency resource can be one time-frequency resource, for example, one resource block (RB) or one resource element (RE). The first time-frequency resource can also be a plurality of time-frequency resources, for example, a plurality of resource blocks (RBs) or a plurality of resource elements (REs). The specific embodiments are not limited here.

[0160] In addition, the network device also configures a second time-frequency resource set for the terminal device according to a conventional 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 includes a plurality of time-frequency resources, and a second time-frequency resource in the plurality of time-frequency resources carries a control channel (for example, a physical downlink control channel (PDCCH)) for transmitting the first control information. Therefore, in the embodiment, the first time-frequency resource set can be understood as a time-frequency resource set for repeatedly transmitting the first control information that is additionally indicated by the network device for the terminal device. The terminal device can receive the first control information on the first time-frequency resource of the first time-frequency resource set, or can receive the first control information on the second time-frequency resource of the second time-frequency resource set.

[0161] In the embodiment, the first indication information can have various implementation manners.

[0162] In an optional implementation manner, the first indication information can indirectly indicate the time domain position of the first time-frequency resource set.

[0163] In the implementation manner, the first indication information can include a first association relationship, and the first association relationship is used for indicating 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. That is, the first indication information can indirectly indicate the time domain position of the first time-frequency resource set by indicating an association relationship between the time domain position of the first time-frequency resource set and the time domain position of another time-frequency resource set (for example, the time domain position of the second time-frequency resource set). If the terminal device can obtain 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 first association relationship and the time domain position of the second time-frequency resource set.

[0164] In the implementation manner, the terminal device can preliminarily determine the time-frequency domain position of the first time-frequency resource set according to the first indication information, thereby narrowing the range of the terminal device listening to the control information, and facilitating to reduce the load of the terminal device.

[0165] In another alternative implementation, the first indication information can directly indicate the time domain location of the first time-frequency resource set.

[0166] In the present implementation, the first indication information does not include the first association relationship, but directly indicates the time domain location of the first time-frequency resource set. At this time, the terminal device does not need to determine the time domain location of the second time-frequency resource set before determining the time domain location of the first time-frequency resource set. At this time, the terminal device determines the time domain location of the first time-frequency resource set based on the first indication information and the index value of the first SSB. Specifically, the terminal device determines the time domain location of the first time-frequency resource set in a manner similar to that in which the terminal device determines the time domain location of the second time-frequency resource based on the second indication information and the index value of the first SSB in the conventional technology. For details, please refer to the relevant description in step 302a below, which will not be repeated here.

[0167] In addition, the first association relationship can have the following various implementations:

[0168] In an alternative 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. Alternatively, the first time-frequency resource set and the second time-frequency resource set are located on continuous and different symbols in the time slot, respectively. The continuous and different symbols refer to two adjacent symbols, or two symbols with continuous index values.

[0169] In the present implementation, it is proposed 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, respectively. In the process of the terminal device monitoring the control channel in the time slot indicated by the time domain location of the second time-frequency resource set, the terminal device can receive at least two copies of the first control information on several continuous symbols in the time slot, without the terminal device needing to additionally monitor the control channel of other time slots (for example, time slots other than the time domain location of the second time-frequency resource set). This is beneficial to saving the time required by the terminal device to obtain the first control information and improving the success rate of the terminal device receiving the first control information.

[0170] In another alternative implementation, the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain. Alternatively, 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, i.e., 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. Alternatively, 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.

[0171] In this embodiment, the first time-frequency resource set and the second time-frequency resource set are located in continuous and different time slots in the time domain, and the terminal device can receive at least two copies of the first control information in the continuous and different time slots. The terminal device does not need to monitor the control channel in non-continuous time slots (for example, in the time slot with an index value of 0 and the time slot with an index value of 3), which is beneficial to the terminal device to obtain the first control information in a relatively short time and improve the success rate of the terminal device to receive the first control information.

[0172] Optionally, the time slot in which the first time-frequency resource set is located is before the time slot in which the second time-frequency resource set is located.

[0173] 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 before the time slot in which the second time-frequency resource set is located, which means that the network device can send the first control information to the terminal device in the first time-frequency resource set earlier than in the second time-frequency resource set. Therefore, compared with the scheme of receiving the first control information only from the second time-frequency resource set, the terminal device can receive the first control information earlier, which is beneficial to shorten the time required by the terminal device to receive the first control information.

[0174] In step 202a, the terminal device determines the time domain position of the first time-frequency resource set according to the first indication information.

[0175] Specifically, the terminal device determines the time domain position of the first time-frequency resource set according to 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, if 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, the time domain position of the first time-frequency resource in the first time-frequency resource set is also similar to the time domain position of the second time-frequency resource in the second time-frequency resource set. Therefore, the terminal device can 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 in a short time range (for example, one time slot or two adjacent time slots), that is, the terminal device can receive at least two copies of the first control information in a short time range. Therefore, it is beneficial to reduce the time delay of the terminal device to receive the first control information, and also beneficial to improve the efficiency of the terminal device to successfully receive the first control information.

[0176] In an optional implementation, the first indication information comprises the 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.

[0177] Optionally, the terminal device first 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, and then determines the time domain position of the first time-frequency resource set according to 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.

[0178] In this embodiment, the terminal device only needs to query a reference table (for example, table 13-11 or table 13-12 in the 3GPP protocol) and perform calculation in the process of determining the second time-frequency resource set, and can directly determine 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 without further table lookup and calculation, which 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 to quickly determining the time domain position of the first time-frequency resource and reducing the time delay of determining the time domain position of the first time-frequency resource.

[0179] In another optional implementation, the first indication information does not comprise the 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.

[0180] It should be understood that in actual application, the terminal device can determine the time domain position of the first time-frequency resource set by using any of the foregoing implementation manners.

[0181] 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.

[0182] Specifically, after determining the time domain position of the second time-frequency resource set, the terminal device listens to a control channel at the position of each time-frequency resource in 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.

[0183] Specifically, after determining the time domain position of the first time-frequency resource set, the terminal device listens to the control channel at the position of each time-frequency resource in 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.

[0184] It should be understood that the time domain position of the first time-frequency resource can be before the time domain position of the second time-frequency resource, and the time domain position of the second time-frequency resource can also be before the time domain position of the first time-frequency resource. Therefore, the terminal device can first receive the first control information on the first time-frequency resource in the first time-frequency resource set, and then receive the repeated first control information on the second time-frequency resource in the second time-frequency resource set; or the terminal device can first receive the first control information on the second time-frequency resource in the second time-frequency resource set, and then receive the repeated first control information on the first time-frequency resource in the first time-frequency resource set. The specific implementation is not limited here.

[0185] In this embodiment, the network device indicates another time-frequency resource set (i.e., the first time-frequency resource set) to the terminal device in addition to the second time-frequency resource set 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 the prior art, the terminal device in the prior art can only receive one copy of the first control information from the second time-frequency resource in the second time-frequency resource set, and therefore, the scheme proposed in this embodiment can effectively improve the probability of correct reception of the first control information by the terminal device.

[0186] The following will be described in combination with FIG. 2B Another main process of the control information sending (or receiving) method proposed in this application will be introduced. Before the terminal device enters the connected state, the terminal device and the network device can perform the following steps:

[0187] In step 201b, the network device sends the first indication information to the terminal device. Correspondingly, the terminal device receives the first indication information from the network device.

[0188] The first indication information is used to indicate whether there is a repeated transmission of the first control information. Optionally, the first control information is control information used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0189] The first indication information is used to indicate whether there is a repeated transmission of the first control information. Alternatively, the first indication information is used to indicate whether the first control information needs to be repeatedly transmitted. Alternatively, the first indication information is used to indicate whether there is a set of time domain resources (for example, a first time-frequency resource set) for repeatedly transmitting the first control information. Alternatively, the first indication information is used to indicate whether there is a time domain resource (for example, a first time-frequency resource in the first time-frequency resource set) for repeatedly transmitting the first control information. The specific embodiments are not limited here.

[0190] The first time-frequency resource set is used to transmit the first control information. Alternatively, the first time-frequency resource set includes a plurality of time-frequency resources, and a first time-frequency resource in the plurality of time-frequency resources carries a control channel (for example, a physical downlink control channel PDCCH) for transmitting the first control information. Alternatively, the first time-frequency resource can be one time-frequency resource, for example, one resource block RB or one resource element RE. Alternatively, the first time-frequency resource can be a plurality of time-frequency resources, for example, a plurality of resource blocks RB or a plurality of resource elements RE. The specific embodiments are not limited here.

[0191] In addition, the network device also configures a second time-frequency resource set for the terminal device according to the conventional technology, and the second time-frequency resource set is also a time-frequency resource for transmitting the first control information. Alternatively, the second time-frequency resource set includes a plurality of time-frequency resources, and a time-frequency resource (hereinafter referred to as a second time-frequency resource) in the plurality of time-frequency resources carries a control channel (for example, a physical downlink control channel PDCCH) for transmitting the first control information. Therefore, in the embodiment, the first time-frequency resource set can be understood as a time-frequency resource set for repeatedly transmitting the first control information which is additionally indicated by the network device for the terminal device. The terminal device can receive the first control information on the first time-frequency resource of the first time-frequency resource set, or can receive the first control information on the second time-frequency resource of the second time-frequency resource set.

[0192] In this embodiment, the first indication information can indicate the presence or absence of the repeated transmission of the first control information by taking two different values. For example, one of the values is used to indicate the absence of the repeated transmission of the first control information, and the other value is used to indicate the presence of the repeated transmission of the first control information. For example, the two values of the first indication information are 0 and 1 respectively. When the first indication information is 0, it represents the absence of the repeated transmission of the first control information, that is, the network device will not repeatedly send the control information to the terminal device on the first time-frequency resource in the first time-frequency resource set, and then the terminal device can only listen to the first control information on the second time-frequency resource set, but not on the first time-frequency resource set. When the first indication information is 1, it represents the presence of the 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, and then the terminal device can listen to 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 foregoing examples are only for the convenience of understanding the present solution, and the first indication information can also represent the absence of the first time-frequency resource set when the first indication information is 1, and the presence of the first time-frequency resource set when the first indication information is 0. In addition, other numbers can also be used to distinguish the presence and absence of the two states, which are not limited here.

[0193] In step 202b, when the first indication information indicates the presence of the 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.

[0194] The first table is a newly defined reference table, which adds the values of a part of parameters on the basis of the reference table in the conventional technology (i.e., Table 13-11 in the protocol 38.213 or Table 13-12 in the 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.

[0195] Optionally, the first table contains 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, and 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.

[0196] Optionally, the first table further includes a first index value determined based on the second indication information, the first index value corresponding to an index value of a first symbol in a monitoring window of the first set of time-frequency resources, and the first index value corresponding to an index value of a first symbol in a monitoring window of the second set of time-frequency resources. At this time, the terminal device can obtain two index values of the first symbol (i.e., the index value of the first symbol in the monitoring window of the first set of time-frequency resources and the index value of the first symbol in the monitoring window of the second set of time-frequency resources) in one table lookup operation based on the first index value querying the aforementioned first table. In the prior art, the first index value determined based on the second indication information can only query one index value of the first symbol (i.e., the index value of the first symbol in the monitoring window of the second set of time-frequency resources). Therefore, the scheme proposed in this embodiment is beneficial to reducing the number of times of querying the reference table by the terminal device, and is beneficial to quickly determining the time domain position of the first set of time-frequency resources and the time domain position of the second set of time-frequency resources by the terminal device.

[0197] For example, the first table includes:

[0198]

[0199] wherein the index value of the first symbol in the monitoring window of the second set of time-frequency resources is 0, and the index value of the first symbol in the monitoring window of the first set of time-frequency resources is The O is used to indicate the starting position of the monitoring window of the first SSB; and 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 FIG. 5 Corresponding embodiments are not described here.

[0200] In a possible implementation, the terminal device determines the time domain position of the first set of time-frequency resources and the time domain position of the second set of time-frequency resources according to the second indication information, an index value of a first synchronization signal block (SSB), and a first table.

[0201] Specifically, the terminal device can determine an index value according to the second indication information. The terminal device can obtain a parameter for calculating the time domain position of the first set of time-frequency resources and a parameter for calculating the time domain position of the second set of time-frequency resources by querying the first table using the index value. Then, the terminal device determines the time domain position of the first set of time-frequency resources based on the parameter for calculating the time domain position of the first set of time-frequency resources and the index value of the first SSB, and determines the time domain position of the second set of time-frequency resources based on the parameter for calculating the time domain position of the second set of time-frequency resources and the index value of the first SSB. For details, please refer to the following FIG. 5 For related introduction in corresponding embodiments.

[0202] In step 203b, the network device sends the first control information to the terminal device on the first set of time-frequency resources and the second set of time-frequency resources respectively; correspondingly, the terminal device receives the first control information on the first set of time-frequency resources and the second set of time-frequency resources respectively.

[0203] In step 203b of the embodiment, the process is similar to step 203a described above. For details, please refer to the relevant description in step 203a above, which will not be repeated here.

[0204] In the embodiment, the terminal device can receive the first indication information indicating whether to repeat the transmission of the first control information before the connection state. When the first indication information indicates that the first control information needs to be repeated, the terminal device will query a newly defined table (i.e., the first table), and the terminal device can determine two sets of time-frequency resources (i.e., the first set of time-frequency resources and the second set of time-frequency resources) for transmitting the first control information according to the first table. Then, the terminal device receives the first control information on the first set of time-frequency resources and the second set of time-frequency resources described above. That is, the network device not only sends the first control information to the terminal device on the first set of time-frequency resources, but also sends the first control information to the terminal device on the second set of time-frequency resources. Therefore, the terminal device can receive the first control information on the first set of time-frequency resources, or receive the first control information on the second set of time-frequency resources. Compared with the scheme in the prior art in which the terminal device in the non-connection state receives the first control information only on the second set of time-frequency resources, the terminal device in the scheme of the present application can receive the first control information through at least two sets of time-frequency resources, and the terminal device can receive at least two copies of the first control information. Therefore, the probability of correctly receiving the first control information by the terminal device can be improved.

[0205] The following will be described in combination with FIG. 3 The method for sending (or receiving) control information proposed in the present application will be further introduced. In the 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 set of time-frequency resources to which the first time-frequency resource belongs. Specifically, the terminal device and the network device mainly perform the following steps:

[0206] In step 301a, the network device sends the second indication information to the terminal device; correspondingly, the terminal device receives the second indication information from the network device.

[0207] The second indication information is used to indicate a time-frequency domain position of a second time-frequency resource set. The second time-frequency resource set includes a plurality of time-frequency resources. The plurality of time-frequency resources includes 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 a conventional technology to transmit control information (for example, the first control information described above). It can also be understood that the 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 second time-frequency resource is a time-frequency resource used to carry 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.

[0208] In addition, the second indication information can be included in a physical broadcast channel (PBCH), that is, the network device sends the second indication information to the terminal device through the physical broadcast channel (PBCH). Optionally, the physical broadcast channel (PBCH) can be a periodic broadcast PBCH. For example, the terminal device can periodically blind detect a synchronization signal / broadcast channel block (SS / PBCH block, SSB) to obtain a PBCH in the SSB, and then obtain the second indication information from the PBCH.

[0209] For example, the second time-frequency resource can be a time-frequency resource carrying a physical downlink control channel (PDCCH). The control information can be downlink control information (DCI), or can be sidelink control information, etc. The second indication information can be pdcch-ConfigSIB1 in a master information block (MIB). This is not limited here.

[0210] For example, the second time-frequency resource set can be a time-frequency resource set occupied by a type 0 physical downlink control channel (PDCCH) (Type0-PDCCH), 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 type 0 PDCCH; the second time-frequency resource set can also be a time-frequency resource set occupied by a type 1 physical downlink control channel (PDCCH) (Type0-PDCCH), 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 type 1 PDCCH, which is not limited here. The time-frequency resource set can be a control resource set (CORESET), a set of time-frequency resources carrying a control channel candidate (PDCCH candidate), or other types of time-frequency resource units, which is not limited here.

[0211] Step 301b, the network device sends the first indication information to the terminal device; correspondingly, the terminal device receives the first indication information from the network device.

[0212] The first indication information can reflect whether the first time-frequency resource exists. When the first time-frequency resource exists, the first indication information can indicate the time-frequency domain position of a first time-frequency resource set to which the first time-frequency resource belongs. When the first time-frequency resource does not exist, the first indication information can indicate 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 used for transmitting control information, and the first time-frequency resource and the second time-frequency resource are used for transmitting the same control information. Hereinafter, the first time-frequency resource and the second time-frequency resource can be used for transmitting the first control information as an example. Compared with the second time-frequency resource, the first time-frequency resource can be understood as a time-frequency resource configured by the network device for the terminal device to repeatedly transmit the first control information. The first indication information can be understood as an indication of whether the network device configures the time-frequency resource for the terminal device to repeatedly transmit the first control information.

[0213] Generally, when the network device configures the time-frequency resource for the terminal device to transmit the control information, it can also be understood that the network device configures the time-frequency resource for the terminal device to carry the control channel. The network device will indicate a time-frequency resource set to the terminal device, and the time-frequency resource set includes the time-frequency resource used for transmitting the control information (or the time-frequency resource used for carrying the control channel). Then, the terminal device listens to the control channel on each time-frequency resource in the time-frequency resource set, so as to receive the control information (for example, the first control information) in a control channel in the multiple control channels listened to. Therefore, the first indication information can also be understood as reflecting whether the first time-frequency resource set exists. 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 the first time-frequency resource exists in the first time-frequency resource set. When the first indication information indicates that the first time-frequency resource set does not exist, it also implicitly indicates that the first time-frequency resource does not exist.

[0214] In actual applications, the first indication information can indicate the existence or non-existence of the first time-frequency resource set by taking two different values. For example, one of the values is used to indicate the non-existence of the first time-frequency resource set, and the other value is used to indicate the existence of the first time-frequency resource set. For example, the two values of the first indication information are 0 and 1 respectively. When the first indication information is 0, it represents the non-existence of the first time-frequency resource set, 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, and then the terminal device can only listen to the first control information on the second time-frequency resource set, but not on the first time-frequency resource set. When the first indication information is 1, it represents the existence of the first time-frequency resource set, 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, and then the terminal device can listen to the first control information on the first time-frequency resource set and the second time-frequency resource set. It should be understood that the foregoing examples are only for the convenience of understanding the present scheme, and the first indication information can also be 1 to represent the non-existence of the first time-frequency resource set, and 0 to represent the existence of the first time-frequency resource set. In addition, other numbers can also be used to distinguish the existence and non-existence of the two states, which are not limited here.

[0215] It should be understood that before the network device sends the first indication information to the terminal device, the network device will determine whether the first indication information sent to the terminal device is used to indicate the existence of the first time-frequency resource set or the non-existence of the first time-frequency resource set based on one or more related factors; it can also be understood that whether the network device configures the terminal device with the first time-frequency resource set. The foregoing related 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.

[0216] In an optional implementation, the network device can know the position of the terminal device during the process of the terminal device accessing the network and the subsequent process of information interaction 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 first indication information sent by the network device to the terminal device indicates 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 can indicate the non-existence of the first time-frequency resource set.

[0217] In another alternative implementation, the network device can learn the communication quality between the network device and the terminal device in the process of information interaction 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 that the first time-frequency resource set exists; 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 can indicate that the first time-frequency resource set does not exist.

[0218] It should be understood that the above examples are only to prove the feasibility of the present scheme, and the network device can also determine the indication content of the first indication information sent to the terminal in combination with other factors, which will not be described one by one here.

[0219] It should also be understood that when the first indication information indicates that the first time-frequency resource set exists, i.e., the first time-frequency resource for the network device to repeatedly send control information to the terminal device exists, the terminal device will perform steps 302b and 304b, and the network device will also perform step 303b. When the first indication information indicates that the first time-frequency resource set does not exist, i.e., the first time-frequency resource for the network device to repeatedly send control information to the terminal device does not exist, the terminal device will not perform steps 302b and 304b, and the network device will also not perform step 303b.

[0220] 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.

[0221] 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, i.e., the association relationship (hereinafter referred to as 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. 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.

[0222] Specifically, the aforementioned first association relationship has various different implementation manners:

[0223] In a possible implementation, the first association relationship is used to indicate that the first set of time-frequency resources and the second set of time-frequency resources are located in a same time slot in the time domain. Optionally, the first set of time-frequency resources and the second set of time-frequency resources are located in continuous and different symbols in the same time slot in the time domain respectively. The continuous and different symbols refer to two adjacent symbols, or two symbols with continuous index values. For example, the first set of time-frequency resources and the second set of time-frequency resources are located in a symbol with an index value of 0 and a symbol with an index value of 1 in a time slot respectively. For another example, the first set of time-frequency resources and the second set of time-frequency resources are located in a symbol with an index value of 7 and a symbol with an index value of 8 in a time slot respectively. Of course, in the same time slot, the symbol where the first set of time-frequency resources is located can be located before or after the symbol where the second set of time-frequency resources is located. For example, the first set of time-frequency resources can be located in a symbol with an index value of 1 in the time slot, and the second set of time-frequency resources can be located in a symbol with an index value of 0 in the time slot; or the first set of time-frequency resources can be located in a symbol with an index value of 0 in the time slot, and the second set of time-frequency resources can be located in a symbol with an index value of 1 in the time slot. The specific case is not limited here.

[0224] For ease of understanding, take FIG. 4A as an example. FIG. 4A FIG. 1 is a schematic diagram of the distribution of the first set of time-frequency resources and the second set of time-frequency resources in the time domain. As shown in FIG. 1, the distribution of time-frequency resources in two time slots corresponding to the index value of a same SSB is listed. The index value of the SSB is 0 (i.e., i=0), corresponding to a time slot with an index value of 0 (referred to as time slot 0) and a time slot with an index value of 1 (referred to as time slot 1). In the time slot 0, there are time-frequency resources belonging to the first set of time-frequency resources and time-frequency resources belonging to the second set of time-frequency resources. Similarly, in the time slot 1, there are time-frequency resources belonging to the first set of time-frequency resources and time-frequency resources belonging to the second set of time-frequency resources. In the time slot 0, the time-frequency resources belonging to the second set of time-frequency resources are in the first symbol (i.e., the symbol with an index value of 0) of the time slot 0, and the time-frequency resources belonging to the first set of time-frequency resources are in the second symbol (i.e., the symbol with an index value of 1) of the time slot 0. In the time slot 1, the time-frequency resources belonging to the second set of time-frequency resources are in the first symbol (i.e., the symbol with an index value of 0) of the time slot 1, and the time-frequency resources belonging to the first set of time-frequency resources are in the second symbol (i.e., the symbol with an index value of 1) of the time slot 1.

[0225] 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 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 copies of the first control information on the continuous symbols in the time slot, without the terminal device additionally monitoring the control channel 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 by the terminal device to obtain the first control information and improving the success rate of the terminal device receiving the first control information.

[0226] 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 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. For example, the first time-frequency resource set and the second time-frequency resource set are respectively located in a time slot with an index value of 0 and a 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.

[0227] Optionally, the time slot in which the first time-frequency resource set is located is before the time slot in which the second time-frequency resource set is located, for example, the first time-frequency resource set is located in a time slot with an index value of 0, and the second time-frequency resource set is located in a time slot with an index value of 1. At this time, the network device can send the first control information to the terminal device on the first time-frequency resource set earlier than sending the first control information to the terminal device on the second time-frequency resource set. Therefore, compared with the scheme of receiving the first control information only from the second time-frequency resource set, the terminal device can receive the first control information earlier, which is beneficial to shortening the time required by the terminal device to receive the first control information.

[0228] 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. For example, the first time-frequency resource set is located in the first symbol (that is, the symbol with an index value of 0) in the time slot with an index value of 0, and the first time-frequency resource set is located in the first symbol (that is, the symbol with an index value of 0) in the time slot with an index value of 1.

[0229] For the convenience of understanding, take FIG. 4B as an example. FIG. 4BThe distribution of the first time-frequency resource set and the second time-frequency resource set in the time domain is shown in the figure. The distribution of the time-frequency resources in the two slots corresponding to the index value of the same SSB is listed. The index value of the SSB is 0 (i.e., i = 0), which corresponds to the slot with index value 0 (referred to as slot 0) and the slot with index value 1 (referred to as slot 1). The time-frequency resources belonging to the first time-frequency resource set are located in slot 0, and occupy the first two symbols (i.e., symbol 0 and symbol 1) in slot 0. The time-frequency resources belonging to the second time-frequency resource set are located in slot 1, and occupy the first two symbols (i.e., symbol 0 and symbol 1) in slot 1.

[0230] 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 slots in the time domain, and the terminal device can receive at least two copies of the first control information in continuous and different slots. The terminal device does not need to monitor the control channel in non-continuous slots (for example, in the slot with index value 0 and the slot with index value 3), which is beneficial to the terminal device to obtain the first control information in a relatively short time, and is beneficial to improve the success rate of the terminal device to receive the first control information.

[0231] In actual application, the first indication information can be implemented by using any one or more of the implementation manners described above, and the first indication information can indicate different meanings by different values. Specifically, one value is used to indicate that there is no first time-frequency resource set, another value is used to indicate that the first time-frequency resource set and the second time-frequency resource set are respectively located in continuous and different symbols in the same 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 slots in the time domain. For example, the values and meanings of the first indication information can be as shown in Table 1-1:

[0232] Table 1-1

[0233] Value of the first indication information Meaning of the first indication information 0 The first set of time-frequency resources does not exist 1 The first set of time-frequency resources and the second set of time-frequency resources are located on different symbols in a same slot 2 The first set of time-frequency resources and the second set of time-frequency resources are located in different slots 3 Reserved

[0234] As shown in Table 1-1, the values of the first indication information are 0, 1 and 2 respectively. When the value of the first indication information is 0, it indicates that there is no first time-frequency resource set; when the value of the first indication information is 1, it indicates that the first time-frequency resource set and the second time-frequency resource set are respectively located in continuous and different symbols in the same slot in the time domain; and when the value of the first indication information is 2, it indicates that the first time-frequency resource set and the second time-frequency resource set are respectively located in different slots in the time domain.

[0235] In this embodiment, 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 position of the first time-frequency resource set. Therefore, the terminal device can preliminarily determine the time-frequency domain position of the first time-frequency resource set according to the first indication information, thereby narrowing the range of the terminal device listening to the control information, and facilitating to reduce the load of the terminal device.

[0236] 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 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 the number of symbols occupied by the first time-frequency resource set in the time domain within a time period is 1; another value is used to indicate that the first time-frequency resource set exists, and the number of symbols occupied by the first time-frequency resource set in the time domain within a time period is 2; another value is used to indicate that the first time-frequency resource set exists, and the number of symbols occupied by the first time-frequency resource set in the time domain within a time period is 3, and so on. The length of the time period (i.e., the number of symbols occupied by the first time-frequency resource set in the time domain indicated by the first indication information) includes but is not limited to one transmission period of the control information, one time slot, discontinuous multiple time slots within one transmission period of the control information, continuous multiple time slots, one subframe, continuous multiple subframes, or discontinuous multiple subframes within one transmission period of the control information, etc. The specific embodiments are not limited here, and it should be understood that the number of symbols occupied by the first time-frequency resource set in the time domain indicated by the first indication information in the embodiments of the present application refers to the number of symbols occupied by the first time-frequency resource set in the time domain within a time period. For the sake of simplicity, the number of symbols occupied by the first time-frequency resource set in the time domain will not be specifically indicated in the subsequent description.

[0237] For example, the values and meanings of the first indication information can be as shown in Table 2-1:

[0238] Table 2-1

[0239] Value of the first indication information Meaning of the first indication information 0 The first set of time-frequency resources does not exist 1 The first set of time-frequency resources exists and occupies 1 symbol 2 The first set of time-frequency resources exists and occupies 2 symbols 3 The first set of time-frequency resources exists and occupies 3 symbols

[0240] 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 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 occupies 2 symbols in the time domain; and when the value of the first indication information is 3, it indicates that the first time-frequency resource set exists and occupies 3 symbols in the time domain.

[0241] In this embodiment, 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 of the first time-frequency resource set. Therefore, the terminal device can determine the number of symbols of the first time-frequency resource set according to the first indication information, and in the process of listening to the control information, if the control information has been repeatedly listened to in L symbols, when the L symbols are equal to the number of symbols indicated by the first indication information, the terminal device does not need to listen to the control information on other time-frequency resources, which is beneficial to reduce the load of the terminal device.

[0242] 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 is not more than 3, and 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 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 exists and occupies 1 symbol in the time domain, and the other value is used to indicate that the first time-frequency resource set exists and occupies 2 symbols in the time domain. For example, the values and meanings of the first indication information can be as shown in Table 2-2:

[0243] Table 2-2

[0244] Value of the first indication information Meaning of the first indication information 0 The first set of time-frequency resources does not exist 1 The first set of time-frequency resources exists and occupies 1 symbol 2 The first set of time-frequency resources exists and occupies 2 symbols 3 Reserved

[0245] As shown in Table 2-2, the values of the first indication information are 0, 1 and 2 respectively. 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 occupies 1 symbol in the time domain; and when the value of the first indication information is 2, it indicates that the first time-frequency resource set exists and occupies 2 symbols in the time domain.

[0246] 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 is not more than 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 of the values 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 occupies 1 symbol in the time domain. For example, the values and meanings of the first indication information can be as shown in Table 2-3:

[0247] Table 2-3

[0248] Value of the first indication information Meaning of the first indication information 0 The first set of time-frequency resources does not exist 1 The first set of time-frequency resources exists and occupies 1 symbol 2 Reserved 3 Reserved

[0249] As shown in Table 2-3, the values of the first indication information are 0 and 1 respectively. Wherein, 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 occupies 1 symbol in the time domain.

[0250] In an optional implementation, the first indication information can be used to indicate whether the first time-frequency resource set exists, the location 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 respectively. 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 second time-frequency resource set are located in different slots in the time domain; another value indicates that the first time-frequency resource set and the second time-frequency resource set are located in the same slot in the time domain and occupy 1 symbol; and another value indicates that the first time-frequency resource set and the second time-frequency resource set are located in the same slot in the time domain and occupy 2 symbols. For example, the values and meanings of the first indication information can be as shown in Table 3-1:

[0251] Table 3-1

[0252]

[0253] As shown in Table 3-1, the values of the first indication information are 0, 1, 2 and 3. Wherein, 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 is used to indicate that the first time-frequency resource set and the second time-frequency resource set are located in different slots in the time domain; when the value of the first indication information is 2, it is used to indicate that the first time-frequency resource set and the second time-frequency resource set are located in the same slot in the time domain and occupy 2 symbols; and when the value of the first indication information is 3, it is used to indicate that the first time-frequency resource set and the second time-frequency resource set are located in the same 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 location 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 combined with the first indication information, which reduces the range of the terminal device listening to the control information, and is conducive to reducing the load of the terminal device.

[0254] In another alternative implementation, the first indication information can express five different meanings respectively through five 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 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 on consecutive and different symbols in the same time slot in the time domain and occupy 1 symbol; and another value indicates 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 and occupy 2 symbols.

[0255] Table 3-2

[0256]

[0257] As shown in Table 3-1, the values of the first indication information are 0, 1, 2, and 3. Among them, when the first indication information takes the value 0, it indicates that the first time-frequency resource set does not exist; when the first indication information takes the value 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 and occupy 2 symbols; when the first indication information takes the value 2, 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 and occupy 1 symbol; when the first indication information takes the value 3, it 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 and occupy 2 symbols; and when the first indication information takes the value 4, it 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 and occupy 1 symbol.

[0258] It should be understood that the above Table 1-1, Table 2-1, Table 2-2, Table 2-3, Table 3-1, and Table 3-2 are only for easy understanding of the scheme. The correspondence between the values of the first indication information and the meanings of the first indication information can be flexibly set according to the actual situation, the values of the first indication information can also be other numbers, or more other meanings can also be indicated through other values, and the values of the first indication information and the meanings expressed should be flexibly determined according to the actual situation, and the specific values of the first indication information are not limited here.

[0259] In addition, the first indication information can be contained in a physical broadcast channel (PBCH), i.e., the network device sends the first indication information to the terminal device through the aforementioned physical broadcast channel PBCH. Optionally, the aforementioned physical broadcast channel PBCH can be a periodic broadcast PBCH. For example, the terminal device can periodically blindly detect a synchronization signal / broadcast channel block (SS / PBCH block, SSB) to obtain the PBCH in the SSB, and then obtain the second indication information from the aforementioned PBCH.

[0260] For example, the first time-frequency resource can be a time-frequency resource carrying a physical downlink control channel PDCCH. The first control information can be downlink control information DCI, or sidelink control information, etc. The specific embodiments are not limited here.

[0261] For example, the first time-frequency resource set can be a time-frequency resource set occupied by a Type 0 physical downlink control channel PDCCH (Type0-PDCCH), i.e., 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 Type 0 PDCCH; the first time-frequency resource set can also be a time-frequency resource set occupied by a Type 1 physical downlink control channel PDCCH (Type0-PDCCH), i.e., 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 Type 1 PDCCH. The specific embodiments are not limited here. The time-frequency resource set can be a control resource set CORESET, a set of time-frequency resources carrying a control channel candidate (i.e., a PDCCH candidate), or other types of time-frequency resource units. The specific embodiments are not limited here.

[0262] In this embodiment, the number of bits occupied by the first indication information is not more than two. Since there are two reserved bits in the PBCH, when the number of bits occupied by the first indication information is not more than two, the first indication information can be placed in the two reserved bits in the PBCH, so that no new bits need to be added in the PBCH, avoiding the increase of the new overhead of the PBCH.

[0263] It should be understood that there is no time sequence limitation between the foregoing step 301a and step 301b. The network device can first perform step 301a and then perform step 301b, or first perform step 301b and then perform step 301a, or simultaneously perform the foregoing step 301a and step 301b, which is 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.

[0264] Step 302a, the terminal device determines the time-frequency domain position of the second time-frequency resource set according to the second indication information and the index value of the first SSB.

[0265] Optionally, the terminal device can determine the index value for querying the reference table according to the second indication information, and then the terminal device queries the reference table in the conventional technology according to the index value to obtain the parameter for determining the time-frequency domain position of the second time-frequency resource set. Then, the terminal device determines the time-frequency domain position of the second time-frequency resource set according to the parameter for determining the time-frequency domain position of the second time-frequency resource set and the index value of the first SSB.

[0266] 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. For example, the first few bits of the second indication information are used as an index value to query the parameter for determining the frequency domain range of the second time-frequency resource set in the reference table (for example, reference table 13-1 (i.e. Table 13-1 in protocol 38.213)) in the conventional technology; the last few bits of the second indication information are used as an index value to query the parameter for determining the time domain range of the second time-frequency resource set in the reference table (for example, 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))) in the conventional technology.

[0267] For example, the second indication information can be a parameter in a master information block (MIB) for configuring time-frequency resources of a bearer control channel. For example, the aforementioned second indication information is a parameter pdcch-ConfigSIB1, which consists of 8 bits, 4 bits of which 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 refer to Table 13-1 (i.e., Table 13-1 in the protocol 38.213), which can be represented by the number of consecutive RBs, the number of symbols, and the RB offset, etc. 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 slot, the index value of the first symbol of the second time-frequency resource set in the slot, and the 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 refer to Table 13-11 (i.e., Table 13-11 in the protocol 38.213) (or refer to Table 13-12 (i.e., Table 13-12 in the protocol 38.213)). Further, 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 slot and the index value of the time slot of the second time-frequency resource set.

[0268] Specifically, the terminal device can determine the index value n0 of the time slot of the second time-frequency resource set based on the following formula one:

[0269]

[0270] Among them, 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 monitoring window of the SSB; M represents the degree of overlap between the SSBi and SSBi+1 monitoring windows; i represents the index value of the first SSB; μ represents the subcarrier spacing; represents the number of slots in a radio frame, and when the subcarrier spacing is determined, the number of slots in the radio frame is determined.

[0271] Since the terminal device can determine the frequency domain position of the second time-frequency resource set based on the high 4 bits in the second indication information, and determine the time domain position of the second time-frequency resource set based on the low 4 bits in the second indication information and the index value of the first SSB, 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, and can also be understood as that the terminal device can determine the time occasion for monitoring the second time-frequency resource, i.e., the time occasion determined by the index value of the slot of the second time-frequency resource set and the index value of the first symbol in the slot corresponding to the index value.

[0272] 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 enable the first control information to be received in the control channel carried by the second time-frequency resource.

[0273] In 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 according to the first indication information and the time-frequency domain position of the second time-frequency resource set.

[0274] 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.

[0275] In a 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 slot in the time domain and are located on continuous and different symbols. At this time, the terminal device can determine the adjacent symbols of the symbols in the slot where the second time-frequency resource set is located as the time domain position of the first time-frequency resource set, and determine 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.

[0276] For the sake of understanding, the foregoing FIG. 4A For example, if the terminal device has determined that the second time-frequency resource set is located in the first symbol of slot 0 (i.e., the symbol with an index value of 0 in slot 0) and the first symbol of slot 1 (i.e., the symbol with an index value of 1 in slot 1), at this time, the terminal device can determine based on the first association relationship that the first time-frequency resource set is also located in slot 0 and slot 1, but the first time-frequency resource set is located in the second symbol of slot 0 (i.e., the symbol with an index value of 1 in slot 0) and the second symbol of slot 1 (i.e., the symbol with an index value of 1 in slot 1).

[0277] In another possible implementation, the first association relationship is used to indicate that the first set of time-frequency resources and the second set of time-frequency resources are located in different time slots in the time domain respectively. Generally, in order to reduce complexity, it is assumed that the index value of a symbol in a time slot where the first set of time-frequency resources is located is the same as the index value of a symbol in a time slot where the second set of time-frequency resources is located. At this time, the terminal device can determine the index value of the time slot where the first set of time-frequency resources is located based on the index value of the time slot where the second set of time-frequency resources is located plus one or minus one, and take the index value of the symbol of the time slot of the second set of time-frequency resources as the index value of the symbol of the time slot of the first set of time-frequency resources. In this way, the terminal device determines the time-frequency domain position of the first set of time-frequency resources.

[0278] For the convenience of understanding, the foregoing FIG. 4B For example, if the terminal device has determined that the second set of time-frequency resources is located in the first symbol of time slot 1 (i.e., the symbol with an index value of 0 in time slot 1) and the second symbol of time slot 1 (i.e., the symbol with an index value of 1 in time slot 1), at this time, the terminal device can determine, based on the first association relationship, that the first set of time-frequency resources is also located in time slot 0 or time slot 2. Here, taking the case that the first set of time-frequency resources is located in time slot 0 as an example, the first set of time-frequency resources is located in the first symbol of time slot 0 (i.e., the symbol with an index value of 0 in time slot 0) and the second symbol of time slot 0 (i.e., the symbol with an index value of 1 in time slot 0).

[0279] Step 303a, the network device sends the first control information to the terminal device on the second time-frequency resource in the second set of time-frequency resources.

[0280] Step 303b, the network device sends the first control information to the terminal device on the first time-frequency resource in the first set of time-frequency resources.

[0281] In this embodiment, step 303b is an optional step. When the network device determines that the first indication information can reflect the existence of the first set of time-frequency resources, i.e., the network device has configured the first set of time-frequency resources for the terminal device, the network device performs step 303b.

[0282] In this step, in the case where the first indication information indicates the existence of the first set of time-frequency resources, the network device can repeatedly send the first control information to the terminal device on the first time-frequency resource of the first set of time-frequency resources. Optionally, the network device can repeatedly send the aforementioned first control information to the terminal device in a periodic manner.

[0283] It should be understood that when the network device can perform 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).

[0284] Optionally, the first time-frequency resource and the second time-frequency resource occupy the same frequency domain resource, so that the network device can repeatedly send the control information on the same frequency domain, which is beneficial to the network device to complete the repeated sending operation of the first control information, and is also beneficial to the management of the network device to the time-frequency resource.

[0285] In step 304a, the terminal device listens to 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.

[0286] Specifically, after determining 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 listens to the control channel on the position of each time-frequency resource in the multiple time-frequency resources, so as to receive the first control information sent by the network device on the second time-frequency resource.

[0287] In step 304b, the terminal device listens to 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.

[0288] In the embodiment, step 304b is an optional step. When the first indication information indicates that the first time-frequency resource set exists, and the terminal device can determine the time-frequency domain position of the first time-frequency resource set, the terminal device only listens to the first time-frequency resource according to the time-frequency domain position of the first time-frequency resource set. Specifically, after determining the time-frequency domain position of the first time-frequency resource set, since the first time-frequency resource set contains multiple time-frequency resources, the terminal device listens to the control information on the position of each time-frequency resource in the multiple time-frequency resources, so as to receive the first control information sent by the network device on the first time-frequency resource.

[0289] In the embodiment, when the 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 listen to 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 working burden of the terminal device.

[0290] 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 used 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 listen to 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 the prior art, the terminal device in the prior art can only receive one copy of the first control information from the second time-frequency resource, and therefore, the scheme proposed in this embodiment can effectively improve the probability of correct reception of the first control information by the terminal device.

[0291] The following will be described in combination with FIG. 5 The control information sending (or receiving) method proposed in this application will be further introduced. In this method, the first indication information is only used to indicate whether the first time-frequency resource exists (i.e. whether the repeated transmission of the first control information exists), and cannot directly or indirectly indicate the time-frequency domain position of the first time-frequency resource set. However, the terminal device can query the updated reference table 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:

[0292] Step 501a, the network device sends the second indication information to the terminal device; correspondingly, the terminal device receives the second indication information from the network device.

[0293] 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 contains a plurality of time-frequency resources. The plurality of time-frequency resources contain the second time-frequency resource, and the second time-frequency resource is used to transmit the first control information. Specifically, please refer to the related introduction in the foregoing step 301a, which will not be repeated here.

[0294] Step 501b, the network device sends the first indication information to the terminal device; correspondingly, the terminal device receives the first indication information from the network device.

[0295] The first indication information is used to indicate whether there is repetition 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 there is a first time-frequency resource. It can also be understood that the first indication information is used to indicate whether the network device configures the terminal device with time-frequency resources for repeating transmission of the first control information. The first time-frequency resource set and the aforementioned second time-frequency resource set can be used for transmitting the first control information. Compared with the aforementioned second time-frequency resource set, the first time-frequency resource set can be understood as a time-frequency resource set that the network device additionally configures for the terminal device for repeating transmission of the first control information. Of course, when the first indication information indicates that there is a 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.

[0296] In actual application, the first indication information can take two different values to respectively indicate the existence or nonexistence of the repetition transmission of the first control information. For example, one of the values is used to indicate the nonexistence of the repetition transmission of the first control information, and the other value is used to indicate the existence of the repetition transmission of the first control information. It can also be understood that the first indication information can take two different values to respectively indicate the existence or nonexistence of the first time-frequency resource set. For example, one of the values is used to indicate the nonexistence of the aforementioned first time-frequency resource set, and the other value is used to indicate the existence of the aforementioned first time-frequency resource set.

[0297] For example, the two values of the first indication information are 0 and 1. When the first indication information is 0, it represents the nonexistence of the aforementioned first time-frequency resource set (i.e. the nonexistence of the repetition 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, and then the terminal device can only listen to the first control information on the second time-frequency resource set, but not on the first time-frequency resource set. When the first indication information is 1, it represents the existence of the aforementioned first time-frequency resource set (i.e. the existence of the repetition 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, and then the terminal device can listen to 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 aforementioned example is only for the convenience of understanding the scheme, and it can also be that when the first indication information is 1, it represents the nonexistence of the first time-frequency resource set (i.e. the nonexistence of the repetition transmission of the first control information); when the first indication information is 0, it represents the existence of the first time-frequency resource set (i.e. the existence of the repetition transmission of the first control information). In addition, other numbers can also be used to distinguish the existence and nonexistence of the two states, which are not limited here.

[0298] 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 that the first time-frequency resource set exists (i.e., to indicate that the repeated transmission of the first control information exists) or does not exist (i.e., to indicate that the repeated transmission of the first control information does not exist); it can also be understood that whether the network device configures the terminal device with the aforementioned first time-frequency resource set. 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, etc. Specifically, please refer to the relevant introduction in the aforementioned step 301b, which will not be repeated here.

[0299] It should be understood that there is no time sequence limitation between the aforementioned step 501a and step 501b. The network device can first perform step 501a and then perform step 501b, or the network device can first perform step 501b and then perform step 501a, or the network device can simultaneously perform the aforementioned step 501a and step 501b, which is not limited here.

[0300] In an optional implementation, when the network device simultaneously performs the aforementioned step 501a and step 501b, the network device can encapsulate the aforementioned first indication information and second indication information in a message (hereinafter referred to as the first message) carrying the master information block MIB. Optionally, the second indication information is encapsulated in the master information block MIB, and the first indication information is encapsulated in the payload inside the first message outside the master information block MIB. When the terminal device receives the first message carrying the aforementioned first indication information and second indication information, the terminal device can determine whether the first time-frequency resource set exists (i.e., whether the first indication information indicates the repeated transmission of the first control information) based on 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 the aforementioned step 502a and step 502b.

[0301] Optionally, the first indication information can be encapsulated in the payload of the PBCH. In an optional implementation, the first indication information can be carried in the reserved bits in the payload of the PBCH. In another optional implementation, the first indication information can be carried in the reserved bits and in the payload of the PBCH.

[0302] In an optional implementation, when the network device simultaneously performs the foregoing steps 501a and 501b, the network device can also encapsulate the foregoing first indication information and second indication information in different messages respectively, and send the first indication information and the second indication information to the terminal device through different messages. For ease of introduction, the network device encapsulates the first indication information in a second message, and encapsulates the second indication information in a third message. Optionally, the foregoing second message and third message have a certain association relationship, 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, the time-frequency domain position of the second time-frequency resource set indicated by the second indication information in the third message needs to be used. Exemplarily, the second message and the third message have a same identifier, and 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.

[0303] In addition, the foregoing first indication information can be contained in a physical broadcast channel PBCH, that is, the network device sends the foregoing first indication information to the terminal device through the foregoing physical broadcast channel PBCH. Optionally, the foregoing physical broadcast channel PBCH can be a periodic broadcast PBCH. Exemplarily, the terminal device can periodically blind detect a synchronization signal / broadcast channel block SSB to obtain the PBCH in the SSB, and then obtain the foregoing second indication information from the foregoing PBCH.

[0304] Exemplarily, the foregoing first time-frequency resource can be a time-frequency resource carrying a physical downlink control channel PDCCH. The foregoing first control information can be downlink control information DCI, or can be sidelink control information, and the like. The specific implementation is not limited here.

[0305] Exemplarily, the foregoing first time-frequency resource set can be a time-frequency resource set occupied by a type 0 physical downlink control channel PDCCH (Type0-PDCCH), 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 type 0 PDCCH; the first time-frequency resource set can also be a time-frequency resource set occupied by a type 1 physical downlink control channel PDCCH (Type0-PDCCH), 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 type 1 PDCCH, and the specific implementation is not limited here. The time-frequency resource set can specifically be a control resource set CORESET, can also be a set of time-frequency resources carrying a control channel candidate set (that is, PDCCH candidates), and can also be a time-frequency resource unit of other types, and the specific implementation is not limited here.

[0306] In addition, when the first indication information indicates that the first time-frequency resource set exists (i.e., the first indication information indicates that the repetition transmission of the first control information exists), the terminal device will perform steps 502a and 504b, and the network device will also perform step 503b. When the first indication information indicates that the first time-frequency resource set does not exist, the terminal device will not perform steps 502a and 504b, and the network device will also not perform step 503b.

[0307] Step 502a, if the first indication information indicates that the repetition transmission of the first control information exists, 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 according to the second indication information, the index value of the first SSB, and the first table.

[0308] Specifically, the terminal device will look up the first table based on the second indication information to determine the time-frequency domain position of the first time-frequency resource set. Wherein, the first table looked up by the terminal device is a newly defined reference table which adds the value of a part of parameters on the basis of the reference table in the conventional technology (i.e., Table 13-11 in the protocol 38.213 or Table 13-12 in the 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.

[0309] In one possible implementation, the aforementioned first table is a table which adds the value of a first parameter on the basis of the reference table in the conventional technology, and the first parameter is a first symbol index indicating the index value of the first symbol of the 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 the conventional technology, the reference table only contains the index value of the first symbol corresponding to the second time-frequency resource set.

[0310] Optionally, the first value of the first parameter can be defined as the index value of the first symbol corresponding to the second time-frequency resource set, and the second value of the first parameter can be defined as the index value of the first symbol corresponding to the first time-frequency resource set; or the first value of the first parameter can be defined as the index value of the first symbol corresponding to the first time-frequency resource set, and the second value of the first parameter can be defined as the index value of the first symbol corresponding to the second time-frequency resource set, which is not limited here. For the convenience of introduction, the first value of the first parameter is taken as the index value of the first symbol corresponding to the second time-frequency resource set, and the second value of the first parameter is taken as the index value of the first symbol corresponding to the first time-frequency resource set as an example for introduction hereinafter.

[0311] The index value of the first symbol of the second time-frequency resource set is represented in the same way as in the conventional technology. The index value of the first symbol of the first time-frequency resource set is determined based on the number of symbols of 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 0, or and the like.

[0312] For example, 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 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, and the time slot in which the second time-frequency resource set is located is before the time slot in which the first time-frequency resource set is located. Here, 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 in which the first time-frequency resource set is located is the next time slot of the time slot in which 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 to be located in a time slot with an index value of 0 (i.e., time slot 0) according to the foregoing formula one, 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 0, and the first time-frequency resource set is located in the symbol with an index value of 0 in time slot 1.

[0313] For example, 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 inverse of 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, and the time slot in which the first time-frequency resource set is located is before the time slot in which the second time-frequency resource set is located. Here, 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 in which the first time-frequency resource set is located is the previous time slot of the time slot in which 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 to be located in a time slot with an index value of 1 (i.e., time slot 1) according to the foregoing formula one, 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.

[0314] For example, 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 in which the second time-frequency resource set is located is before the time slot in which the first time-frequency resource set is located. Wherein, "1" indicates that the symbol in which the second time-frequency resource set is located is the second symbol in the time slot, i.e. the symbol with index value 1 in the time slot; indicates that the time slot in which the first time-frequency resource set is located is the next time slot of the time slot in which 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 the symbol with index value 1. For example, if the second time-frequency resource is calculated to be located in the time slot with index value 0 (i.e. time slot 0) according to the aforementioned formula one, when the value of the first parameter is , it indicates that the second time-frequency resource set is located in the symbol with index value 1 in the time slot 0, and the first time-frequency resource set is located in the symbol with index value 1 in the time slot 1.

[0315] 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 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 in which the second time-frequency resource set is located is before the time slot in which the first time-frequency resource set is located. Wherein, "2" indicates that the symbol in which the second time-frequency resource set is located is the third symbol in the time slot, i.e. the symbol with index value 2 in the time slot; indicates that the time slot in which the first time-frequency resource set is located is the next time slot of the time slot in which 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 the symbol with index value 2. For example, if the second time-frequency resource is calculated to be located in the time slot with index value 0 (i.e. time slot 0) according to the aforementioned formula one, when the value of the first parameter is , it indicates that the second time-frequency resource set is located in the symbol with index value 2 in the time slot 0, and the first time-frequency resource set is located in the symbol with index value 2 in the time slot 1.

[0316] It should be understood that in actual application, other numbers or characters can also be defined to represent the time domain position relationship between two time-frequency resource sets, which are not listed one by one here.

[0317] Optionally, the first table further includes index values for determining the values of the first parameters, 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 can determine a first index value based on the second indication information, the first index value corresponds to an index value of a first symbol in a monitoring window of the first set of time-frequency resources, and the first index value corresponds to an index value of a first symbol in a monitoring window of the second set of time-frequency resources. At this time, the terminal device can obtain two index values of the first symbol (i.e., the index value of the first symbol in the monitoring window of the first set of time-frequency resources and the index value of the first symbol in the monitoring window of the second set of time-frequency resources) by querying the first table based on the first index value in one table lookup operation. In the prior art, the first index value determined based on the second indication information can only query one index value of the first symbol (i.e., the index value of the first symbol in the monitoring window of the second set of time-frequency resources). Therefore, the scheme proposed in this embodiment is beneficial to reducing the number of times of querying the reference table by the terminal device, and is beneficial to quickly determining the time domain position of the first set of time-frequency resources and the time domain position of the second set of time-frequency resources by the terminal device.

[0318] For example, the newly defined reference table (i.e., the first table) proposed in this application can be as shown in Table 4-1 and Table 4-2 as follows:

[0319] Table 4-1 is a newly defined reference table obtained based on reference table 13-11 (Table 13-11), which represents parameters for determining PDCCH monitoring occasions for Type0-PDCCH CSS set-SS / PBCH block and CORESET multiplexing pattern 1 and FR1 when the pattern type is pattern 1 and the radio frequency type is FR1, i.e., Parameters for PDCCH monitoring occasions for Type0-PDCCH CSS set-SS / PBCH block and CORESET multiplexing pattern 1 and FR1.

[0320] Table 4-2 is a newly defined reference table obtained based on reference table 13-12 (Table 13-12), which represents parameters for determining PDCCH monitoring occasions for Type0-PDCCH CSS set-SS / PBCH block and CORESET multiplexing pattern 1 and FR2 when the pattern type is pattern 1 and the radio frequency type is FR2, i.e., Parameters for PDCCH monitoring occasions for Type0-PDCCH CSS set-SS / PBCH block and CORESET multiplexing pattern 1 and FR2.

[0321] Table 4-1

[0322]

[0323]

[0324] Table 4-2

[0325]

[0326] Optionally, the terminal device can determine an index value for querying the first table according to the second indication information, and then the terminal device queries the first table according to the index value to obtain the parameters for determining the time-frequency domain position of the second time-frequency resource set and the 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 according to 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 according to the parameters for determining the time-frequency domain position of the first time-frequency resource set and the index value of the first SSB.

[0327] 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 for querying 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 the reference table (e.g. reference table 13-1 (i.e. Table 13-1 in the protocol 38.213)) in the conventional technology. The last 4 bits of the second indication information are used as an index value (i.e. the first index value) for querying 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 the 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. Wherein, the way the terminal device calculates the time domain position of the first time-frequency resource set is the same as the process type of calculating the time domain position of the second time-frequency resource set. For details, please refer to the relevant introduction in step 302a, which is not repeated here.

[0328] 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.

[0329] 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.

[0330] Optionally, the terminal device can determine an index value for querying the reference table according to the second indication information, and then the terminal device queries the reference table (i.e., the second table) in the conventional technology according to the index value to obtain a parameter for determining the time-frequency domain position of the second time-frequency resource set. Then, the terminal device determines the time-frequency domain position of the second time-frequency resource set according to the parameter for determining the time-frequency domain position of the second time-frequency resource set and the index value of the first SSB.

[0331] 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 of which 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 serve as an index value for querying a parameter for determining the frequency domain range of the second time-frequency resource set in the reference table (for example, reference table 13-1 (i.e., Table 13-1 in the protocol 38.213)) in the conventional technology; the last few bits of the second indication information serve as an index value for querying a parameter for determining the time domain range of the second time-frequency resource set in the reference table (for example, reference table 13-11 (i.e., Table 13-11 in the protocol 38.213) (or reference table 13-12 (i.e., Table 13-12 in the protocol 38.213))) in the conventional technology.

[0332] Specifically, the terminal device determines a first index value based on the second indication information, and then queries a parameter for determining the time domain position of the second time-frequency resource set in the second table using the first index value. Then, the terminal device determines the time domain position of the second time-frequency resource set based on the parameter for determining the time domain position of the second time-frequency resource set in the second table and the index value of the first SSB.

[0333] Specifically, please refer to the relevant introduction in the foregoing step 302a, which will not be repeated here.

[0334] Step 503a, the network device sends the first control information to the terminal device on the second time-frequency resource in the second time-frequency resource set.

[0335] Step 503b, the network device sends the first control information to the terminal device on the first time-frequency resource in the first time-frequency resource set.

[0336] 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 (i.e., the first indication information indicates that there is the first time-frequency resource set), the network device can perform step 503b.

[0337] Step 504a: The terminal device listens to 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.

[0338] Step 504b: The terminal device listens to 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.

[0339] In this embodiment, step 504b is an optional step. When the first indication information indicates that there is repeated transmission of the first control information (i.e., the first indication information indicates that there is a first time-frequency resource set), the terminal device will determine the time-frequency domain location of the first time-frequency resource set. At this time, the terminal device can execute step 504b.

[0340] In this embodiment, steps 503a, 503b, 504a and 504b are similar to the descriptions in steps 303a, 303b, 304a and 304b above, and will not be repeated here.

[0341] In this embodiment, the first indication information sent by the network device to the terminal device is only used to indicate whether there is duplicate transmission of the first control information (i.e., whether there is a first time-frequency resource set). The terminal device can query a 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 second time-frequency resource set. Therefore, the terminal device can listen to the control channel on the first time-frequency resource set and the second time-frequency resource set respectively to receive the first control information. Thus, the terminal device can receive two sets of the first control information on different time-frequency resources. Compared to conventional technologies, where the terminal device can only receive one set of the first control information from the second time-frequency resource, the solution proposed in this embodiment can effectively improve the probability of the terminal device correctly receiving the first control information.

[0342] like FIG. 6 The diagram shown is a structural schematic of a communication device 60 provided in this embodiment. It should be understood that the aforementioned... FIG. 2A , FIG. 2B , FIG. 3 and FIG. 5 The terminal device in the corresponding method embodiment can be based on this embodiment. FIG. 6 The structure of the communication device 60 shown.

[0343] The communication device 60 comprises at least one processor 601, at least one memory 602 and at least one transceiver 603. The processor 601, the memory 602 and the transceiver 603 are connected with each other. Optionally, the communication device 60 can further comprise an input device 605, an output device 606 and one or more antennas 604. The antennas 604 are connected with the transceiver 603, and the input device 605 and the output device 606 are connected with the processor 601.

[0344] In this embodiment, the memory 602 is mainly used for storing software programs and data. The memory 602 can exist independently and be connected with the processor 601. Alternatively, the memory 602 can be integrated with the processor 601, for example, integrated in one or more chips. The memory 602 can store program codes for executing the technical solutions of the embodiments of the present application and be controlled to execute by the processor 601. Various computer programs codes executed can also be regarded as the driving programs of the processor 601. It should be understood that the memory 602 in this embodiment can store the program codes for executing the technical solutions of the embodiments of the present application. FIG. 6 Only one memory and one processor are shown, but in actual applications, the communication device 60 can have multiple processors or multiple memories, which are not limited here. In addition, the memory 602 can also be referred to as a storage medium or a storage device, etc. The memory 602 can 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.

[0345] In this embodiment, the transceiver 603 can be configured to support the receiving or transmitting of radio frequency signals between the communication device 60 and an access network device. The transceiver 603 can be connected to the antenna 604. The transceiver 603 includes a transmitter Tx and a receiver Rx. Specifically, the one or more antennas 604 can receive radio frequency signals, and the receiver Rx of the transceiver 603 can be configured to receive the radio frequency signals from the antenna 604 and 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 for further processing, such as demodulation and decoding, by the processor 601. In addition, the transmitter Tx of the transceiver 603 can be configured to receive modulated digital baseband signals or digital intermediate frequency signals from the processor 601, and convert the modulated digital baseband signals or digital intermediate frequency signals into radio frequency signals, and transmit the radio frequency signals through the one or more antennas 604. Specifically, the receiver Rx can selectively perform one or more stages of down-mixing and analog-to-digital conversion to obtain the digital baseband signals or digital intermediate frequency signals, and the order of the down-mixing and analog-to-digital conversion can be adjustable. The transmitter Tx can selectively perform one or more stages of up-mixing and digital-to-analog conversion to obtain the radio frequency signals, and the order of the up-mixing and digital-to-analog conversion can be adjustable. The digital baseband signals and the digital intermediate frequency signals can be collectively referred to as digital signals.

[0346] It should be understood that the aforementioned transceiver 603 can also be referred to as a transceiving unit, a transceiver, a transceiving device, or the like. Optionally, the components in the transceiving unit that are configured to implement the receiving function can be regarded as a receiving unit, and the components in the transceiving unit that are configured to implement the transmitting function can be regarded as a transmitting unit, i.e., the transceiving unit includes the receiving unit and the transmitting unit, and the receiving unit can also be referred to as a receiver, an input port, a receiving circuit, or the like, and the transmitting unit can be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.

[0347] The processor 601 can be a baseband processor or a central processing unit (CPU), and the baseband processor and the CPU can be integrated together or separated. The processor 601 can be configured to implement various functions for the terminal device, such as processing communication protocols and communication data, or controlling the entire terminal device, executing software programs, processing data of the software programs, or assisting in completing computing tasks, such as processing graphics images or audio, and the like, or the processor 601 is configured to implement one or more of the above functions.

[0348] In addition, the output device 606 is in communication with the processor 601 and can display information in various ways, which are not limited herein.

[0349] In a possible implementation, the communication apparatus 60 is configured to perform the method in the foregoing FIG. 2A or FIG. 3 corresponding embodiments. At this time, the transceiver 603 in the communication apparatus 60 is configured to receive, from a network device, first indication information at the communication apparatus 60 before the communication apparatus 60 is in a connected state, the first indication information being used to indicate a first time-frequency resource set, the first time-frequency resource set and a second time-frequency resource set being used to transmit first control information. The processor 601 is configured to determine a time domain position of the first time-frequency resource set according to the first indication information. In addition, the transceiver 603 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. Optionally, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0350] 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.

[0351] In an optional implementation, the processor 601 in the communication apparatus 60 is configured to determine the time domain position of the first time-frequency resource set according to the first indication information and an index value of a first synchronization signal block SSB, the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set both being related to the index value of the first SSB.

[0352] In an optional implementation, the first indication information includes a first association relationship, the first association relationship being 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 according to second indication information and the index value of the first SSB, the second indication information being 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 according to the first indication information and the time domain position of the second time-frequency resource set.

[0353] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in a same time slot in the time domain.

[0354] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located on continuous and different symbols in the time slot in the time domain.

[0355] 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.

[0356] In an optional implementation, the index value of the symbol in the time slot where the first set of time-frequency resources is located is the same as the index value of the symbol in the time slot where the second set of time-frequency resources is located.

[0357] In an optional implementation, the time slot where the first set of time-frequency resources is located is before the time slot where the second set of time-frequency resources is located.

[0358] In a possible implementation, the communication apparatus 60 is configured to perform the method in the foregoing FIG. 2B or FIG. 5 corresponding embodiments. At this time, the transceiver 603 in the communication apparatus 60 is configured to receive first indication information before the communication apparatus 60 is in the connected state, the first indication information being used to indicate whether there is repetition transmission of first control information. The processor 601 is configured to determine whether there is repetition transmission of the first control information according to the first indication information, and when the first indication information indicates that there is repetition transmission of the first control information, determine the time domain position of the first set of time-frequency resources and the time domain position of the second set of time-frequency resources according to the first table. The transceiver 603 in the communication apparatus 60 is further configured to receive the first control information on the first set of time-frequency resources and the second set of time-frequency resources respectively before the communication apparatus 60 is in the connected state.

[0359] In a possible implementation, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0360] In a possible implementation, the first indication information is located in a first message, the first message further including a master information block MIB carrying second indication information, the second indication information being used to indicate the time domain position of the second set of time-frequency resources. The processor 601 is specifically configured to determine the time domain position of the first set of time-frequency resources and the time domain position of the second set of time-frequency resources according to the second indication information, the index value of the first synchronization signal block SSB and the first table.

[0361] In a possible implementation, the first table contains the index value of the first symbol in the monitoring window of the first set of time-frequency resources and the index value of the first symbol in the monitoring window of the second set of time-frequency resources.

[0362] In a possible implementation, the first table further includes a first index value determined based on the second indication information, the first index value corresponding to the index value of the first symbol in the monitoring window of the first set of time-frequency resources, and the first index value corresponding to the index value of the first symbol in the monitoring window of the second set of time-frequency resources.

[0363] In a possible implementation, the first table includes:

[0364]

[0365] wherein an index value of a first symbol in a monitoring window of the second set of time-frequency resources is 0, and an index value of a first symbol in a monitoring window of the first set of time-frequency resources is The O is used to indicate a starting position of the monitoring window of the first SSB; and the M is used to indicate an overlapping degree between the monitoring window of the first SSB and a monitoring window of a neighboring SSB.

[0366] The remaining can refer to the method of the terminal device in the above embodiments, which will not be repeated here.

[0367] As FIG. 7 shown, it is a structural schematic diagram of another communication apparatus 70 provided in the embodiment. It should be understood that the foregoing FIG. 2A , FIG. 2B , FIG. 3 and FIG. 5 corresponding method embodiments of the network device can be based on the structure of the communication apparatus 70 shown in the embodiment. It should also be understood that when the subsequent evolution type access network device or base station performs the method involved in the embodiments of the present application, the subsequent evolution type access network or base station can also adopt the structure of the communication apparatus 70 shown in the embodiment. FIG. 7 FIG. 7 The communication apparatus 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, the memory 702, the transceiver 703, and the network interface 705 are connected through a connection apparatus, and the antenna 704 is connected with the transceiver 703. Wherein, the foregoing connection apparatus can include various interfaces, transmission lines or buses, etc., which are not limited in the embodiment.

[0368] The network interface 705 is used to connect the communication apparatus 70 with other communication apparatuses through a communication link. Specifically, the network interface 705 can include a network interface between the communication apparatus 70 and a core network element, such as an S1 interface; the network interface 705 can also include a network interface between the communication apparatus 70 and other network devices (such as other access network devices or core network elements), such as an X2 or Xn interface.

[0369] The transceiver 703, the memory 702, and the antenna 704 can refer to the related descriptions of the transceiver 603, the memory 602, and the antenna 604 in the corresponding embodiments, which will not be repeated here.

[0370] The transceiver 703, the memory 702, and the antenna 704 can refer to the related descriptions of the transceiver 603, the memory 602, and the antenna 604 in the corresponding embodiments, which will not be repeated here. FIG. 6

[0371] ​​Furthermore, the aforementioned processor 701 is primarily used for processing communication protocols and communication data, controlling the entire network device, executing software programs, and processing software program data, for example, to support the communication device 70 in performing the actions described in the foregoing embodiments. The communication device 70 may include a baseband processor and a central processing unit (CPU), wherein the baseband processor is primarily used for processing communication protocols and communication data, and the CPU is primarily used for controlling the entire communication device 70, executing software programs, and processing software program data. FIG. 7 The processor 701 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 interconnected via technologies such as buses. 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 via various buses. The baseband processor can also be described as a baseband processing circuit or a baseband processing chip. The central processing unit can also be described as a central processing circuit or a central processing chip. The function of processing communication protocols and communication data can be built into the processor or stored in memory as a software program, with the processor executing the software program to implement the baseband processing function.

[0372] In one possible implementation, the communication device 70 is used to perform the aforementioned... FIG. 2A or FIG. 3 The method in the corresponding embodiment. Specifically, in the communication device 70, the transceiver 703 is used to send first indication information, which indicates a first time-frequency resource set. 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 disconnected state. Furthermore, the transceiver 703 is also used to send the first control information on the first time-frequency resource set and the second time-frequency resource set, respectively.

[0373] In one optional implementation, the first control information is used to schedule System Information Block SIB1; or, the first control information is control information scrambled with System Message Radio Network Temporary Identifier (SI-RNTI).

[0374] In one alternative implementation, the first indication information is used to indicate the time-domain location of the first time-frequency resource set.

[0375] In one optional implementation, the first indication information and the index value of the first synchronization signal block (SSB) are used to determine the time domain location of the first time-frequency resource set, and the time domain location of both the first time-frequency resource set and the second time-frequency resource set are related to the index value of the first SSB.

[0376] In an optional implementation, the first indication information comprises a first association relationship, the first association relationship being 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 transceiver 703 is further configured to send second indication information, the second indication information being 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 being 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 being used to determine the time domain position of the first time-frequency resource set.

[0377] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in a same time slot in the time domain.

[0378] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in different symbols in the time slot in the time domain.

[0379] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in different time slots in the time domain.

[0380] In an optional implementation, an index value of a symbol in a time slot where the first time-frequency resource set is located is same as an index value of a symbol in a time slot where the second time-frequency resource set is located.

[0381] In an optional implementation, a time slot where the first time-frequency resource set is located is located before a time slot where the second time-frequency resource set is located.

[0382] In another possible implementation, the communication apparatus 70 is configured to perform the method in the foregoing FIG. 2B or FIG. 5 corresponding embodiments.

[0383] Specifically, in the communication apparatus 70, the transceiver 703 is configured to send first indication information, the first indication information being used to indicate whether there is a repeated transmission of first control information. The transceiver 703 is further configured to send the first control information on a first time-frequency resource set and a second time-frequency resource set respectively when the first indication information indicates that there is the repeated transmission of the first control information, a time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set being determined based on a first table.

[0384] In an optional implementation, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0385] In an optional implementation, the first indication information is located in a first message, and the first message further comprises a master information block (MIB) carrying second indication information, the second indication information being used to indicate a time domain position of the second time-frequency resource set; the second indication information, an 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.

[0386] In an optional implementation, the first table comprises an index value of a first symbol in a monitoring window of the first time-frequency resource set and an index value of a first symbol in a monitoring window of the second time-frequency resource set.

[0387] In an optional implementation, the first table further comprises a first index value determined based on the second indication information, 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.

[0388] In an optional implementation, the first table comprises:

[0389]

[0390] wherein 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 a starting position of a monitoring window of the first SSB; and the M is used to indicate an overlapping degree between the monitoring window of the first SSB and a monitoring window of an adjacent SSB.

[0391] The remaining can refer to the method of the network device in the above embodiments, and will not be described here.

[0392] As FIG. 8 shown, the present application further provides another communication apparatus 80, which can be a terminal device or a chip in a terminal device. The communication apparatus 80 comprises a receiving module 801 and a processing module 802.

[0393] In a possible implementation, the communication apparatus 80 is configured to perform the method of the network device described above. FIG. 2A or FIG. 3The method in the corresponding embodiment. Wherein, the receiving module 801 is configured to receive, from a network device, first indication information at the communication apparatus 80 before the communication apparatus 80 is in a connected state, the first indication information being used to indicate a first time-frequency resource set, the first time-frequency resource set and a second time-frequency resource set being used to transmit first control information. The processing module 802 is configured to determine a time domain position of the first time-frequency resource set according to the first indication information. In addition, the receiving module 801 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. Optionally, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0394] 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.

[0395] In an optional implementation, the processing module 802 in the communication apparatus 80 is configured to determine the time domain position of the first time-frequency resource set according to the first indication information and an index value of a first synchronization signal block SSB, the time domain position of the first time-frequency resource set and the time domain position of the second time-frequency resource set both being related to the index value of the first SSB.

[0396] In an optional implementation, the first indication information includes a first association relationship, the first association relationship being 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 according to second indication information and the index value of the first SSB, the second indication information being 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 according to the first indication information and the time domain position of the second time-frequency resource set.

[0397] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in a same time slot in the time domain.

[0398] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are respectively located on continuous and different symbols in the time slot in the time domain.

[0399] 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.

[0400] In an optional implementation, an index value of a symbol in a time slot where the first time-frequency resource set is located is the same as an index value of a symbol in a time slot where the second time-frequency resource set is located.

[0401] In an optional implementation, the time slot where the first time-frequency resource set is located is before the time slot where the second time-frequency resource set is located.

[0402] In a possible implementation, the communication apparatus 80 is configured to perform the method in the foregoing FIG. 2B or FIG. 5 corresponding embodiments. At this point, the receiving module 801 in the communication apparatus 80 is configured to receive first indication information before the communication apparatus 80 is in the connected state, the first indication information being used to indicate whether there is repetition transmission of first control information. The processing module 802 is configured to determine, according to the first indication information, whether there is repetition transmission of the first control information, and when the first indication information indicates that there is repetition 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 a first table. The receiving module 801 in the communication apparatus 80 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 communication apparatus 80 is in the connected state.

[0403] In a possible implementation, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0404] In a possible implementation, the first indication information is located in a first message, the first message further including a master information block MIB carrying second indication information, the second indication information being used to indicate 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 first time-frequency resource set and the time domain position of the second time-frequency resource set according to the second indication information, an index value of a first synchronization signal block SSB, and the first table.

[0405] In a possible implementation, the first table contains an index value of a first symbol in a monitoring window of the first time-frequency resource set and an index value of a first symbol in a monitoring window of the second time-frequency resource set.

[0406] In a possible implementation, the first table further includes a first index value determined based on the second indication information, 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.

[0407] In a possible implementation, the first table includes:

[0408]

[0409] The index value of the first symbol in the monitoring window of the second set of time-frequency resources is 0, and the index value of the first symbol in the monitoring window of the first set of time-frequency resources is The O is used to indicate the starting position of the monitoring window of the first SSB; and the M is used to indicate the overlapping degree between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

[0410] The remaining can refer to the method of the terminal device in the above embodiments, which will not be repeated here.

[0411] As FIG. 9 shown, the present application also provides another communication apparatus 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 apparatus 90 comprises a sending module 901 and a processing module 902.

[0412] In a possible implementation, the communication apparatus 90 is configured to perform the method in the above FIG. 2A or FIG. 3 corresponding embodiments. Specifically, in the communication apparatus 90, the sending module 902 is configured to determine the time-frequency domain position of the first time-frequency resource, and determine the first indication information indicating the time-frequency domain position of the first time-frequency resource. In addition, the sending module 901 is configured to send the above-mentioned first indication information, which is used to indicate a first set of time-frequency resources, the first set of time-frequency resources and a second set of time-frequency resources being used to transmit first control information to a terminal device in a non-connected state. In addition, the sending module 901 is further configured to send the first control information on the first set of time-frequency resources and the second set of time-frequency resources, respectively.

[0413] In an optional implementation, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0414] In an optional implementation, the first indication information is used to indicate the time domain position of the first set of time-frequency resources.

[0415] In an optional implementation, 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 set of time-frequency resources, and the time domain position of the first set of time-frequency resources and the time domain position of the second set of time-frequency resources are both related to the index value of the first SSB.

[0416] In an optional implementation, the first indication information comprises a first association relationship, the first association relationship being 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 sending module 901 is further configured to send second indication information, the second indication information being 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 being 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 being used to determine the time domain position of the first time-frequency resource set.

[0417] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in a same time slot in the time domain.

[0418] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in different symbols in the time slot respectively.

[0419] In an optional implementation, the first time-frequency resource set and the second time-frequency resource set are located in different time slots respectively.

[0420] In an optional implementation, an index value of a symbol in a time slot where the first time-frequency resource set is located is same as an index value of a symbol in a time slot where the second time-frequency resource set is located.

[0421] In an optional implementation, a time slot where the first time-frequency resource set is located is located before a time slot where the second time-frequency resource set is located.

[0422] In another possible implementation, the communication apparatus 90 is configured to perform the method in the foregoing FIG. 2B or FIG. 5 corresponding embodiments. Specifically, in the communication apparatus 90, the processing module 902 is configured to determine whether the first control information needs to be repeatedly transmitted, and determine the first indication information based on a result of the determination of whether the first control information needs to be repeatedly transmitted. The sending module 901 is configured to send the first indication information, the first indication information being used to indicate whether there is repeated transmission of the first control information. The sending module 901 is further configured 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, a time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set being determined based on a first table.

[0423] In an optional implementation, the first control information is used to schedule a system information block SIB1; or the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

[0424] In an optional implementation, the first indication information is located in a first message, and the first message further comprises a master information block (MIB) carrying second indication information, the second indication information being used to indicate a time domain position of the second time-frequency resource set; the second indication information, an 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.

[0425] In an optional implementation, the first table comprises an index value of a first symbol in a monitoring window of the first time-frequency resource set and an index value of a first symbol in a monitoring window of the second time-frequency resource set.

[0426] In an optional implementation, the first table further comprises a first index value determined based on the second indication information, 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.

[0427] In an optional implementation, the first table comprises:

[0428]

[0429] wherein 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 a starting position of a monitoring window of the first SSB; and the M is used to indicate an overlapping degree between the monitoring window of the first SSB and a monitoring window of a neighboring SSB.

[0430] The remaining can refer to the method of the network device in the above embodiments, and will not be described here.

[0431] In the implementation process, each step of the above method can be completed by integrated logic circuits of hardware in the processor or instructions in the form of software. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware processor execution completion, or executed by hardware and software modules in the processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, register, etc. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method. 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 herein are only for the convenience of differentiation, and are not used to limit the scope of the embodiments of the present application.

[0432] Further, the present application provides a computer program product including one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions according to the embodiments of the present application are wholly or partially generated. For example, the network device related methods in the foregoing FIG. 2A 、 FIG. 2B 、 FIG. 3 and FIG. 5 are implemented. For another example, the terminal device related methods in the foregoing FIG. 2A 、 FIG. 2B 、 FIG. 3 and FIG. 5 are implemented. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatuses. The computer instructions can be stored in a computer readable storage medium, or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transferred from one website site, computer, server or data center to another website site, computer, server or data center through wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium that can be used to store by the computer or data storage device such as server, data center, etc. integrated with one or more available medium sets. The available medium can be magnetic medium (for example, floppy disk, hard disk, magnetic tape), optical medium (for example, digital versatile disc (DVD)), or semiconductor medium (for example, solid state disk (SSD)) and the like.

[0433] Further, the present application also provides a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the terminal device related methods in the foregoing FIG. 2A 、 FIG. 2B 、 FIG. 3 and FIG. 5 .

[0434] Further, the present application also provides a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the network device related methods in the foregoing FIG. 2A 、 FIG. 2B 、 FIG. 3 and FIG. 5 .

[0435] It should be understood that the term "and / or" in this document merely describes an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases of existence of A alone, existence of A and B at the same time, and existence of B alone. In addition, the character " / " generally represents an "or" relationship between the front and rear associated objects.

[0436] It should be understood that the size of the sequence number of the above-mentioned processes in various embodiments of the present application does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0437] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0438] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A control information receiving method characterized by comprising: The method comprises: receiving first indication information, the first indication information being used for indicating a first time-frequency resource set, the first time-frequency resource set and a second time-frequency resource set being used for transmitting first control information; receiving the first control information on the first time-frequency resource set and the second time-frequency resource set respectively.

2. The method of claim 1, wherein, The first control information is used for scheduling a system information block (SIB1); or the first control information is control information scrambled by a system message radio network temporary identifier (SI-RNTI).

3. The method of claim 2, wherein, The first indication information is used for indicating a time domain position of the first time-frequency resource set. The method further comprises: determining the time domain position of the first time-frequency resource set according to the first indication information.

4. The method of claim 3, wherein, The determining the time domain position of the first time-frequency resource set according to the first indication information comprises: determining the time domain position of the first time-frequency resource set according to the first indication information and an index value of a first synchronization signal block (SSB), the time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set both being related to the index value of the first SSB.

5. The method of claim 4, wherein, The first indication information comprises a first association relationship, the first association relationship being used for indicating 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 determining the time domain position of the first time-frequency resource set according to the first indication information and the index value of the first SSB comprises: determining the time domain position of the second time-frequency resource set according to second indication information and the index value of the first SSB, the second indication information being used for indicating the time domain position of the second time-frequency resource set; determining the time domain position of the first time-frequency resource set according to the first indication information and the time domain position of the second time-frequency resource set.

6. A control information transmission method characterized by comprising: The method comprises: sending first indication information, the first indication information being used for indicating a first time-frequency resource set, the first time-frequency resource set and a second time-frequency resource set being used for transmitting first control information to a terminal device in a non-connected state; sending the first control information on the first time-frequency resource set and the second time-frequency resource set respectively.

7. The method of claim 6, wherein, The first control information is used for scheduling a system information block (SIB1); or the first control information is control information scrambled by a system message radio network temporary identifier (SI-RNTI).

8. The method of claim 7, wherein, The first indication information is used for indicating a time domain position of the first time-frequency resource set.

9. The method of claim 8, wherein, The first indication information and an index value of a first synchronization signal block (SSB) are used for determining the time domain position of the first time-frequency resource set, the time domain position of the first time-frequency resource set and a time domain position of the second time-frequency resource set both being related to the index value of the first SSB.

10. The method of claim 9, wherein, The first indication information comprises a first association relationship, the first association relationship being used for indicating 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 method further comprises: transmit second indication information, the second indication information being used to indicate a time domain position of the second set of time-frequency resources, the second indication information and the index value of the first SSB being used to determine the time domain position of the second set of time-frequency resources, the first indication information and the time domain position of the second set of time-frequency resources being used to determine the time domain position of the first set of time-frequency resources.

11. The method according to claim 5 or 10, characterized in that, The first set of time-frequency resources and the second set of time-frequency resources are located in a same time slot in the time domain.

12. The method of claim 11, wherein, The first set of time-frequency resources and the second set of time-frequency resources are located in continuous and different symbols in the time slot respectively in the time domain.

13. The method of claim 5 or 10, wherein, The first set of time-frequency resources and the second set of time-frequency resources are located in different time slots respectively in the time domain.

14. The method of claim 13, wherein, An index value of a symbol in a time slot where the first set of time-frequency resources is located is same as an index value of a symbol in a time slot where the second set of time-frequency resources is located.

15. The method according to claim 13 or 14, characterized in that, The time slot where the first set of time-frequency resources is located is located before the time slot where the second set of time-frequency resources is located.

16. A control information receiving method characterized by comprising: comprising: receiving 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, determining a time domain position of a first set of time-frequency resources and a time domain position of a second set of time-frequency resources according to a first table; receiving the first control information on the first set of time-frequency resources and the second set of time-frequency resources respectively.

17. The method of claim 16, wherein, The first control information is used to schedule a system information block SIB1; or, the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

18. The method of claim 16 or 17, wherein, The first indication information is located in a first message, the first message further comprising a master information block MIB carrying second indication information, the second indication information being used to indicate the time domain position of the second set of time-frequency resources; The first indication information is located in a first message, the first message further comprising a master information block MIB carrying second indication information, the second indication information being used to indicate the time domain position of the second set of time-frequency resources; comprising:

19. A control information transmission method characterized by comprising: transmitting 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, transmitting the first control information on a first set of time-frequency resources and a second set of time-frequency resources respectively, a time domain position of the first set of time-frequency resources and a time domain position of the second set of time-frequency resources being determined based on a first table. The first control information is used to schedule a system information block SIB1; or, the first control information is control information scrambled by a system message radio network temporary identifier SI-RNTI.

20. The method of claim 19, wherein, The first indication information is located in a first message, the first message further comprising a master information block MIB carrying second indication information, the second indication information being used to indicate the time domain position of the second set of time-frequency resources; the second indication information, an index value of a first synchronization signal block SSB and the first table being used to determine the time domain position of the first set of time-frequency resources and the time domain position of the second set of time-frequency resources.

21. The method of claim 19 or 20, wherein, ​ 22. The method of any one of claims 16 to 21, wherein, The first table comprises an index value of a first symbol in a monitoring window of the first set of time-frequency resources and an index value of a first symbol in a monitoring window of the second set of time-frequency resources.

23. The method of claim 22, wherein, The first table further comprises a first index value determined based on the second indication information, the first index value corresponding to an index value of a first symbol in a monitoring window of the first set of time-frequency resources, and the first index value corresponding to an index value of a first symbol in a monitoring window of the second set of time-frequency resources.

24. The method of claim 22 or 23, wherein, The first table comprises: Wherein, the index value of the first symbol in the monitoring window of the second set of time-frequency resources is 0, and the index value of the first symbol in the monitoring window of the first set of time-frequency resources is The O is used to indicate the starting position of the monitoring window of the first SSB; and the M is used to indicate the overlapping degree between the monitoring window of the first SSB and the monitoring window of the adjacent SSB.

25. A communications device, characterized by The communication device comprises modules for performing the method according to any one of claims 1 to 24.

26. A communications device, characterized by The communication device comprises a processor configured to cause the method according to any one of claims 1 to 24 to be implemented.

27. A computer-readable storage medium, characterized in that, The computer-readable storage medium comprises instructions that, when executed, cause the method according to any one of claims 1 to 24 to be implemented.

28. A computer program product, characterised in that, The computer program product comprises instructions that, when executed, cause the method according to any one of claims 1 to 24 to be implemented.

Images