Collaborative user equipment determination method and device

Abstract

The present application discloses a method and device for determining a collaborative user device, which is applied to a first device in an uplink multi-user collaborative diversity technology. The uplink multi-user collaborative diversity technology includes a first device and a second device, wherein the first device is a source user device and the second device is a collaborative user device. The method includes: the first device sends collaborative request information to multiple candidate devices, and the collaborative request information is used by the multiple candidate devices to determine whether the collaborative conditions are met; the first device receives collaborative response information sent from one or more candidate devices, and the collaborative response information is response information sent to the first device by one or more candidate devices when it is determined that the collaborative conditions are met; the first device determines the second device based on the collaborative response information, and sends collaborative confirmation information to the second device. The above scheme is conducive to realizing collaborative diversity transmission and reducing collaborative transmission delay.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for determining a collaborative user device. Background Art

[0002] Uplink multi-user cooperative diversity involves multiple user equipment (UEs) cooperating to transmit the same data to the base station, improving the reliability of data transmission from a single UE. The user equipment (UE) that assists in data transmission is called a cooperating UE, and the assisted UE is called a source UE. Data transmission between the source UE and the cooperating UE is performed via short-range wireless communication, such as Wi-Fi Direct.

[0003] During the coordinated diversity transmission phase, after the source UE sends an uplink scheduling request to the base station, the base station configures resources for the source UE and the coordinated UE, and sends uplink scheduling information to them via the physical downlink control channel (PDCCH), so that they can transmit the source UE's uplink data on the same time-frequency resources. However, in the New Radio (NR) system, multiple search space sets are configured for each downlink bandwidth subset (BWP) in the serving cell, where each search space set contains search spaces of one or more aggregation levels. If the detection period and time slot offset in the time domain configuration information of the PDCCH search space set of the source UE and the coordinated UE are significantly different, it may make coordinated transmission impossible. Summary of the Invention

[0004] The present application provides a method and device for determining a collaborative user device, which can realize collaborative diversity transmission and reduce collaborative transmission delay.

[0005] In the first aspect, the present application provides a method for determining a collaborative user device, which is applied to a first device in an uplink multi-user collaborative diversity technology, wherein the uplink multi-user collaborative diversity technology includes a first device and a second device, the first device is a source user device, and the second device is a collaborative user device; the method includes: the first device sends a collaborative request message to a plurality of candidate devices, and the collaborative request message is used by the plurality of candidate devices to determine whether the collaborative conditions are met; the first device receives a collaborative response message sent from one or more candidate devices, and the collaborative response message is a response message sent to the first device by the one or more candidate devices when it is determined that the collaborative conditions are met; the first device determines the second device among the one or more candidate devices based on the collaborative response message, and sends a collaborative confirmation message to the second device.

[0006] In the above method, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices. When the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, cooperative transmission is performed, which is conducive to reducing the cooperative transmission delay.

[0007] In combination with the first aspect, in a possible implementation manner of the first aspect, the collaboration request information includes: channel quality information between the first device and the network device;

[0008] In combination with the first aspect, in a possible implementation of the first aspect, the collaboration conditions include: the channel quality between the candidate device and the network device is greater than the channel quality between the first device and the network device; the short-distance transmission link quality between the candidate device and the first device is greater than a first preset threshold; and the candidate device has collaborative transmission capabilities.

[0009] In combination with the first aspect, in a possible implementation of the first aspect, the collaborative response information includes: channel quality information between the candidate device and the network device, short-distance transmission link quality between the candidate device and the first device, and time domain configuration information of the physical downlink control channel PDCCH search space set of the candidate device.

[0010] In combination with the first aspect, in a possible implementation of the first aspect, the first device determines the second device among the one or more candidate devices based on the collaborative response information, including: the first device selects a first reference device from the one or more candidate devices based on a channel quality constraint condition; the first device determines the second device based on the time domain configuration information of the PDCCH search space set of the first reference device.

[0011] In combination with the first aspect, in a possible implementation of the first aspect, the channel quality constraint condition includes a channel orthogonality condition between the first device and the candidate device, and a short-distance transmission link quality condition between the candidate device and the first device.

[0012] In combination with the first aspect, in a possible implementation of the first aspect, the first device determines the second device based on the time domain configuration information of the PDCCH search space set of the first reference device, including: the first device determines whether there is a first reference device in the first reference device that meets the consistency condition with the time domain configuration information of the PDCCH search space set of the first reference device; when it is determined that there is a first reference device whose time domain configuration information of the PDCCH search space set meets the consistency condition with the first device, the first reference device with the smallest time slot offset difference with the first device is selected from the first reference devices that meet the consistency condition as the second device.

[0013] In combination with the first aspect, in a possible implementation of the first aspect, after the first device determines whether there is a first reference device in the first reference device based on the time domain configuration information of the PDCCH search space set of the first reference device, the method also includes: when it is determined that there is no device in the first reference device whose time domain configuration information meets the consistency condition with the PDCCH search space set of the first device, the first device determines the second device from the one or more candidate devices according to the collaborative response information and the optimal channel quality criterion.

[0014] In combination with the first aspect, in a possible implementation of the first aspect, the collaborative response information includes: channel quality information between the candidate device and the network device, and short-distance transmission link quality between the candidate device and the first device.

[0015] In combination with the first aspect, in a possible implementation of the first aspect, the first device determines the second device among the one or more candidate devices based on the collaborative response information, including: the first device determines the second device from the one or more candidate devices according to the collaborative response information based on the optimal channel quality criterion.

[0016] In combination with the first aspect, in a possible implementation of the first aspect, the first device determines the second device from the one or more candidate devices according to the collaborative response information and the channel quality optimal criterion, including: the first device selects a second reference device from the one or more candidate devices, whose short-distance transmission link quality between the device and the first device is higher than a second preset threshold; the first device selects the second device from the second reference device, whose channel quality between the device and the network device is greater than a third preset threshold.

[0017] In combination with the first aspect, in a possible implementation manner of the first aspect, the collaboration confirmation information includes time domain configuration information of a PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

[0018] In combination with the first aspect, in a possible implementation of the first aspect, the collaboration confirmation information is used by the second device to determine whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information. If so, the second device sends first collaboration establishment information to the network device, and the first collaboration establishment information includes the C-RNTI information of the first device.

[0019] In combination with the first aspect, in a possible implementation of the first aspect, the collaboration confirmation information is used for the second device to send second collaboration establishment information to the network device when it determines that the time domain configuration information of the PDCCH search space set of the second device and the first device does not meet the consistency condition based on the collaboration confirmation information. The second collaboration establishment information includes the C-RNTI information of the first device and the time domain configuration information adjustment request of the search space set. The time domain configuration information adjustment request of the search space set is used to request the network device to adjust the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same.

[0020] In combination with the first aspect, in a possible implementation of the first aspect, the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset conditions, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

[0021] In conjunction with the first aspect, in a possible implementation of the first aspect, the preset condition is:

[0022]

[0023] Among them, n1 is the first time slot offset, n2 is the second time slot offset, n1 <n2,μ PUSCH and μ PDCCH They are the subcarrier spacing configuration information of the physical uplink shared channel PUSCH and PDCCH respectively, and K2 depends on the PUSCH configuration.

[0024] In the second aspect, the present application provides a method for determining a collaborative user device, which is applied to a second device in an uplink multi-user collaborative diversity technology, wherein the uplink multi-user collaborative diversity technology includes a first device and a second device, the first device being a source user device, and the second device being a collaborative user device; the method includes: the second device receiving collaborative request information from the first device, and judging whether a collaborative condition is met based on the collaborative request information; when it is judged that the collaborative condition is met, the second device sends a collaborative response information to the first device, and the collaborative response information is used by the first device to select the second device from one or more candidate devices, and send a collaborative confirmation information to the second device.

[0025] In the above method, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices. When the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, cooperative transmission is performed, which is conducive to reducing the cooperative transmission delay.

[0026] In combination with the second aspect, in a possible implementation manner of the second aspect, the collaboration request information includes: channel quality information between the first device and the network device.

[0027] In combination with the second aspect, in a possible implementation of the second aspect, the collaboration conditions include: the channel quality between the candidate device and the network device is greater than the channel quality between the first device and the network device; the short-distance transmission link quality between the candidate device and the first device is greater than a first preset threshold; the candidate device has collaborative transmission capabilities.

[0028] In combination with the second aspect, in a possible implementation of the second aspect, the collaborative response information includes: channel quality information between the second device and the network device, short-distance transmission link quality between the second device and the first device, and time domain configuration information of the physical downlink control channel PDCCH search space set of the second device.

[0029] In combination with the second aspect, in a possible implementation of the second aspect, the collaborative response information is used by the first device to select a first reference device that meets the channel quality constraint conditions based on the collaborative response information of the one or more candidate devices; and is used by the first device to select the second device based on the time domain configuration information of the PDCCH search space set of the first reference device, and the one or more candidate devices and the first reference device include the second device.

[0030] In combination with the second aspect, in a possible implementation of the second aspect, the channel quality constraint condition includes a channel orthogonality condition between the first device and the candidate device, and a short-distance transmission link quality condition between the candidate device and the first device.

[0031] In combination with the second aspect, in a possible implementation of the second aspect, the time domain configuration information of the PDCCH search space set of the first reference device is used by the first device to determine whether there is a first reference device in the first reference device whose time domain configuration information satisfies the consistency condition with the time domain configuration information of the PDCCH search space set of the first device; when it is determined that there is a first reference device whose time domain configuration information satisfies the consistency condition with the PDCCH search space set of the first device, the first reference device whose time slot offset difference with the first device is the smallest is selected from the first reference devices that meet the consistency condition as the second device.

[0032] In combination with the second aspect, in a possible implementation of the second aspect, if there is no device in the first reference device whose time domain configuration information meets the consistency condition with the PDCCH search space set of the first device, the collaborative response information is used by the first device to determine the second device from the one or more candidate devices based on the optimal channel quality criterion.

[0033] In combination with the second aspect, in a possible implementation of the second aspect, the collaborative response information includes: channel quality information between the second device and the network device, and short-distance transmission link quality between the second device and the first device.

[0034] In combination with the second aspect, in a possible implementation of the second aspect, the collaborative response information is used by the first device to determine the second device from the one or more candidate devices based on an optimal channel quality criterion.

[0035] In combination with the second aspect, in a possible implementation of the second aspect, the collaborative response information is used by the first device to select a second reference device whose short-distance transmission link quality between the first device and the first device is higher than a second preset threshold based on the collaborative response information of the one or more candidate devices; and is used by the first device to select the second device whose channel quality between the device and the network device is greater than a third preset threshold from the second reference devices, and the one or more candidate devices and the second reference devices include the second device.

[0036] In combination with the second aspect, in a possible implementation manner of the second aspect, the collaboration confirmation information includes time domain configuration information of a PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

[0037] In combination with the second aspect, in a possible implementation of the second aspect, the method also includes: the second device receives the collaboration confirmation information from the first device; the second device determines whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information; if so, the second device sends first collaboration establishment information to the network device, and the first collaboration establishment information includes the C-RNTI information of the first device.

[0038] In combination with the second aspect, in a possible implementation of the second aspect, after the second device determines whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information, the method also includes: when the second device determines that the time domain configuration information of the PDCCH search space set with the first device does not meet the consistency condition, the second device sends a second collaboration establishment message to the network device, and the second collaboration establishment message includes the C-RNTI information of the first device and a time domain configuration information adjustment request of the search space set, and the time domain configuration information adjustment request of the search space set is used to request the network device to adjust the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same.

[0039] In combination with the second aspect, in a possible implementation of the second aspect, the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset conditions, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

[0040] In conjunction with the second aspect, in a possible implementation of the second aspect, the preset condition is:

[0041]

[0042] Among them, n1 is the first time slot offset, n2 is the second time slot offset, n1 <n2,μ PUSCH and μ PDCCHThey are the subcarrier spacing configuration information of the physical uplink shared channel PUSCH and PDCCH respectively, and K2 depends on the PUSCH configuration.

[0043] In a third aspect, the present application provides a method for determining a cooperative user equipment, the method comprising:

[0044] The network device receives collaboration establishment information sent from the second device, the collaboration establishment information includes the C-RNTI information of the first device, the collaboration establishment information indicates that the first device establishes collaborative transmission with the second device, the collaboration establishment information is the information sent by the second device to the network device when receiving collaboration confirmation information from the first device, the collaboration confirmation information is the information sent by the first device to the second device when the second device is selected as the collaborative user device based on the collaboration response information sent by one or more candidate devices, the collaboration response information is the response information sent to the first device by the one or more candidate devices when they determine that the collaboration conditions are met based on the collaboration request information, and the collaboration request information is the information sent by the first device to multiple candidate devices requesting collaboration.

[0045] In the above method, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices. When the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, cooperative transmission is performed, which is conducive to reducing the cooperative transmission delay.

[0046] In combination with the third aspect, in a possible implementation of the third aspect, the collaboration establishment information also includes a request for adjusting the time domain configuration information of the search space set, and the method also includes: the network device adjusts the time domain configuration information of the PDCCH search space set of the second device according to the collaboration establishment information, and the adjusted time domain configuration information of the PDCCH search space set of the second device is the same as the time domain configuration information of the PDCCH search space set of the first device.

[0047] In a fourth aspect, the present application provides a collaborative user device determination device, which is applied to a first device in an uplink multi-user collaborative diversity technology, wherein the uplink multi-user collaborative diversity technology also includes a second device, the first device is a source user device, and the second device is a collaborative user device; the collaborative user device determination device includes: a transceiver module, used to send collaborative request information to multiple candidate devices, the collaborative request information is used by the multiple candidate devices to determine whether the collaborative conditions are met; and used to receive collaborative response information sent from one or more candidate devices, the collaborative response information is response information sent to the first device by the one or more candidate devices when it is determined that the collaborative conditions are met; a processing module, used to determine the second device among the one or more candidate devices based on the collaborative response information, and send collaborative confirmation information to the second device through the transceiver module.

[0048] In the above-mentioned device, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices, and perform cooperative transmission when the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, which is conducive to reducing the cooperative transmission delay.

[0049] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the collaboration request information includes: channel quality information between the first device and the network device.

[0050] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the collaboration conditions include: the channel quality between the candidate device and the network device is greater than the channel quality between the first device and the network device; the short-distance transmission link quality between the candidate device and the first device is greater than a first preset threshold; the candidate device has collaborative transmission capabilities.

[0051] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the collaborative response information includes: channel quality information between the candidate device and the network device, short-distance transmission link quality between the candidate device and the first device, and time domain configuration information of the physical downlink control channel PDCCH search space set of the candidate device.

[0052] In combination with the fourth aspect, in a possible implementation of the fourth aspect, in terms of determining the second device among the one or more candidate devices based on the collaborative response information, the processing module is specifically used to: select a first reference device from the one or more candidate devices based on channel quality constraints; and determine the second device based on the time domain configuration information of the PDCCH search space set of the first reference device.

[0053] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the channel quality constraint condition includes a channel orthogonality condition between the first device and the candidate device, and a short-distance transmission link quality condition between the candidate device and the first device.

[0054] In combination with the fourth aspect, in a possible implementation of the fourth aspect, in terms of determining the second device based on the time domain configuration information of the PDCCH search space set of the first reference device, the processing module is specifically used to: determine whether there is a first reference device in the first reference device that meets the consistency condition with the time domain configuration information of the PDCCH search space set of the first reference device; and when it is determined that there is a first reference device whose time domain configuration information meets the consistency condition with the PDCCH search space set of the first device, select the first reference device with the smallest time slot offset difference with the first device from the first reference devices that meet the consistency condition as the second device.

[0055] In combination with the fourth aspect, in a possible implementation of the fourth aspect, after determining whether there is a first reference device in the first reference device based on the time domain configuration information of the PDCCH search space set of the first reference device, the processing module is also used to: when it is determined that there is no device in the first reference device whose time domain configuration information meets the consistency condition with the PDCCH search space set of the first device, determine the second device from the one or more candidate devices according to the collaborative response information and the optimal channel quality criterion.

[0056] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the collaborative response information includes: channel quality information between the candidate device and the network device, and short-distance transmission link quality between the candidate device and the first device.

[0057] In combination with the fourth aspect, in a possible implementation of the fourth aspect, in terms of determining the second device among the one or more candidate devices based on the collaborative response information, the processing module is specifically used to: determine the second device from the one or more candidate devices based on the collaborative response information according to the channel quality optimal criterion.

[0058] In combination with the fourth aspect, in a possible implementation of the fourth aspect, in terms of determining the second device from the one or more candidate devices based on the collaborative response information and the optimal channel quality criterion, the processing module is specifically used to: select a second reference device from the one or more candidate devices, whose short-distance transmission link quality between the device and the first device is higher than a second preset threshold; and select the second device from the second reference device, whose channel quality with the network device is greater than a third preset threshold.

[0059] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the collaboration confirmation information includes time domain configuration information of the PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

[0060] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the collaboration confirmation information is used by the second device to determine whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information. If so, the second device sends first collaboration establishment information to the network device, and the first collaboration establishment information includes the C-RNTI information of the first device.

[0061] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the collaboration confirmation information is used when the second device determines, based on the collaboration confirmation information, that the time domain configuration information of the PDCCH search space set of the second device and the first device does not meet the consistency condition. The second device sends second collaboration establishment information to the network device, and the second collaboration establishment information includes the C-RNTI information of the first device and the time domain configuration information adjustment request of the search space set. The time domain configuration information adjustment request of the search space set is used to request the network device to adjust the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same.

[0062] In combination with the fourth aspect, in a possible implementation of the fourth aspect, the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset conditions, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

[0063] In conjunction with the fourth aspect, in a possible implementation of the fourth aspect, the preset condition is:

[0064]

[0065] Among them, n1 is the first time slot offset, n2 is the second time slot offset, n1 <n2,μ PUSCH and μ PDCCH They are the subcarrier spacing configuration information of the physical uplink shared channel PUSCH and PDCCH respectively, and K2 depends on the PUSCH configuration.

[0066] In the fifth aspect, the present application provides a collaborative user equipment determination device, which is applied to the second device in the uplink multi-user collaborative diversity technology, and the uplink multi-user collaborative diversity technology also includes a first device, the first device is the source user device, and the second device is the collaborative user device; the collaborative user equipment determination device includes: a transceiver module, which is used to receive collaborative request information from the first device, and determine whether the collaborative conditions are met based on the collaborative request information; and when it is determined that the collaborative conditions are met, sends collaborative response information to the first device, and the collaborative response information is used by the first device to select the second device from one or more candidate devices, and send collaborative confirmation information to the second device.

[0067] In the above-mentioned device, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices, and perform cooperative transmission when the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, which is conducive to reducing the cooperative transmission delay.

[0068] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the collaboration request information includes: channel quality information between the first device and the network device.

[0069] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the collaboration conditions include: the channel quality between the candidate device and the network device is greater than the channel quality between the first device and the network device; the short-distance transmission link quality between the candidate device and the first device is greater than a first preset threshold; the candidate device has collaborative transmission capabilities.

[0070] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the collaborative response information includes: channel quality information between the second device and the network device, short-distance transmission link quality between the second device and the first device, and time domain configuration information of the physical downlink control channel PDCCH search space set of the second device.

[0071] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the collaborative response information is used by the first device to select a first reference device that meets the channel quality constraint conditions based on the collaborative response information of the one or more candidate devices; and is used by the first device to select the second device based on the time domain configuration information of the PDCCH search space set of the first reference device, and the one or more candidate devices and the first reference device include the second device.

[0072] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the channel quality constraint condition includes a channel orthogonality condition between the first device and the candidate device, and a short-distance transmission link quality condition between the candidate device and the first device.

[0073] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the time domain configuration information of the PDCCH search space set of the first reference device is used by the first device to determine whether there is a first reference device in the first reference device whose time domain configuration information satisfies the consistency condition with the time domain configuration information of the PDCCH search space set of the first device; when it is determined that there is a first reference device whose time domain configuration information satisfies the consistency condition with the PDCCH search space set of the first device, the first reference device whose time slot offset difference with the first device is the smallest is selected from the first reference devices that meet the consistency condition as the second device.

[0074] In combination with the fifth aspect, in a possible implementation of the fifth aspect, if there is no device in the first reference device whose time domain configuration information meets the consistency condition with the PDCCH search space set of the first device, the collaborative response information is used by the first device to determine the second device from the one or more candidate devices based on the optimal channel quality criterion.

[0075] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the collaborative response information includes: channel quality information between the second device and the network device, and short-distance transmission link quality between the second device and the first device.

[0076] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the collaborative response information is used by the first device to determine the second device from the one or more candidate devices based on an optimal channel quality criterion.

[0077] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the collaborative response information is used by the first device to select a second reference device whose short-distance transmission link quality between the first device and the first device is higher than a second preset threshold based on the collaborative response information of the one or more candidate devices; and is used by the first device to select the second device whose channel quality between the device and the network device is greater than a third preset threshold from the second reference devices, and the one or more candidate devices and the second reference devices include the second device.

[0078] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the collaboration confirmation information includes time domain configuration information of the PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

[0079] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the transceiver module is also used to: receive the collaboration confirmation information from the first device; the second device also includes a processing module for judging whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information; if so, the second device sends the first collaboration establishment information to the network device through the transceiver module, and the first collaboration establishment information includes the C-RNTI information of the first device.

[0080] In combination with the fifth aspect, in a possible implementation of the fifth aspect, after determining whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information, the processing module is also used to: when it is determined that the time domain configuration information of the PDCCH search space set of the first device does not meet the consistency condition, send second collaboration establishment information to the network device through the transceiver module, the second collaboration establishment information includes the C-RNTI information of the first device, and a time domain configuration information adjustment request of the search space set, and the time domain configuration information adjustment request of the search space set is used to request the network device to adjust the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same.

[0081] In combination with the fifth aspect, in a possible implementation of the fifth aspect, the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset conditions, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

[0082] In conjunction with the fifth aspect, in a possible implementation of the fifth aspect, the preset condition is:

[0083]

[0084] Among them, n1 is the first time slot offset, n2 is the second time slot offset, n1 <n2,μ PUSCH and μ PDCCH They are the subcarrier spacing configuration information of the physical uplink shared channel PUSCH and PDCCH respectively, and K2 depends on the PUSCH configuration.

[0085] In the sixth aspect, the present application provides a collaborative user equipment determination device, which is applied to a network device, and the collaborative user equipment determination device includes: a transceiver module, used to receive collaborative establishment information sent from a second device, the collaborative establishment information includes the C-RNTI information of the first device, the collaborative establishment information indicates that the first device establishes collaborative transmission with the second device, the collaborative establishment information is the information sent by the second device to the network device when it receives the collaborative confirmation information from the first device, the collaborative confirmation information is the information sent by the first device to the second device when the first device selects the second device as a collaborative user device based on the collaborative response information sent by one or more candidate devices, the collaborative response information is the response information sent to the first device by the one or more candidate devices when they determine that the collaboration conditions are met based on the collaborative request information, and the collaborative request information is the information sent by the first device to multiple candidate devices requesting collaboration.

[0086] In the above-mentioned device, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices, and perform cooperative transmission when the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, which is conducive to reducing the cooperative transmission delay.

[0087] In combination with the sixth aspect, in a possible implementation of the sixth aspect, the collaboration establishment information also includes a request for adjusting the time domain configuration information of the search space set, and the network device also includes a processing module for adjusting the time domain configuration information of the PDCCH search space set of the second device according to the collaboration establishment information, and the adjusted time domain configuration information of the PDCCH search space set of the second device is the same as the time domain configuration information of the PDCCH search space set of the first device.

[0088] In a seventh aspect, the present application provides a terminal device, which includes a processor and a memory, wherein the memory is used to store program code, and the processor is used to call the program code in the memory to execute any method described in the first aspect.

[0089] In an eighth aspect, the present application provides a terminal device, comprising a processor and a memory, wherein the memory is used to store program code, and the processor is used to call the program code in the memory to execute any one of the methods described in the second aspect.

[0090] In a ninth aspect, the present application provides a network device comprising a processor and a memory, wherein the memory is used to store program code, and the processor is used to call the program code in the memory to execute any one of the methods described in the third aspect.

[0091] In a tenth aspect, the present application provides a terminal device, comprising a processor; the processor is coupled to a memory, and the processor is used to call the program code in the memory to execute any method described in the first aspect.

[0092] In the eleventh aspect, the present application provides a terminal device, which includes a processor; the processor is coupled to a memory, and the processor is used to call the program code in the memory to execute any method described in the second aspect.

[0093] In a twelfth aspect, the present application provides a network device, comprising a processor; the processor is coupled to a memory, and the processor is used to call the program code in the memory to execute any method described in the third aspect.

[0094] In a thirteenth aspect, the present application provides a readable storage medium, wherein the readable storage medium stores instructions. When the instructions are executed on a terminal device, the terminal device executes any one of the methods described in the first aspect.

[0095] In a fourteenth aspect, the present application provides a readable storage medium, wherein the readable storage medium stores instructions. When the instructions are executed on a terminal device, the terminal device executes any one of the methods described in the second aspect.

[0096] In a fifteenth aspect, the present application provides a readable storage medium, wherein the readable storage medium stores instructions. When the instructions are executed on a network device, the network device executes any one of the methods described in the third aspect.

[0097] In a sixteenth aspect, the present application provides a computer program product, which, when running on a terminal device, enables the terminal device to execute any method described in the first aspect.

[0098] In the seventeenth aspect, the present application provides a computer program product, which, when running on a terminal device, enables the terminal device to execute any method described in the second aspect.

[0099] In an eighteenth aspect, the present application provides a computer program product, which, when running on a network device, enables the network device to execute any method described in the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0100] Figure 1 A schematic diagram of a time domain configuration of a PDCCH search space set for a source UE and a cooperative UE provided in an embodiment of the present application;

[0101] Figure 2 A network architecture diagram of a communication system provided in an embodiment of the present application;

[0102] Figure 3 A schematic diagram of a method for determining a cooperative user device provided in an embodiment of the present application;

[0103] Figure 4 A schematic diagram of another method for determining a cooperative user device provided in an embodiment of the present application;

[0104] Figure 5 A schematic diagram of a device for determining a cooperative user device provided in an embodiment of the present application;

[0105] Figure 6 A schematic diagram of a terminal device provided in an embodiment of the present application;

[0106] Figure 7 A schematic diagram of a network device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0107] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0108] To facilitate understanding of this application, the concepts involved in this application are first explained:

[0109] Uplink multi-user cooperative diversity: Multiple user equipment (UEs) collaborate to transmit the same data to a network device, improving the reliability of data transmission from a single UE. The user equipment (UE) that assists in data transmission is called a cooperating UE, and the assisted UE is called a source UE. Data transmission between the source UE and the cooperating UE is performed via short-range wireless communication, such as Wi-Fi Direct.

[0110] Among them, depending on whether the network equipment perceives the existence of the cooperative UE during the cooperation process, there are two implementation methods of uplink multi-user cooperative diversity technology: transparent cooperation method, that is, the cooperative UE uses the cell radio network temporary identifier (C-RNTI) of the source UE to communicate with the network equipment; non-transparent cooperation method, that is, the source UE and the cooperative UE use their respective C-RNTIs to communicate with the network equipment, and the data sent by the cooperative UE to the base station is sent by the source UE to the cooperative UE through a short-distance transmission link.

[0111] The first prerequisite for achieving multi-user cooperative diversity is to select cooperative UEs, that is, to select one or more cooperative UEs from multiple candidate cooperative UEs around the source UE as cooperative UEs to transmit the source UE's data to the network device. After receiving the data from the source UE and the cooperative UE, the network device merges and processes them. How to select the cooperative UE directly affects the performance of cooperative transmission. According to the different entities that perform UE selection, existing cooperative UE selection schemes can be divided into two categories: cooperative UE selection by the base station; cooperative UE selection by the source UE. Among them, the selection criteria mainly consider how to select appropriate cooperative UEs to improve diversity gain, such as channel quality optimization criteria, synchronization constraint criteria, etc., but ignore the delay problem in cooperative transmission.

[0112] Take the uplink multi-user cooperative diversity scenario based on non-transparent transmission as an example. In the cooperative transmission phase, after the source UE sends an uplink scheduling request to the network device, the base station configures resources for the source UE and the cooperative UE, and sends uplink scheduling information to them through the physical downlink control channel (PDCCH) so that they can send the source UE's uplink data on the same time-frequency resources. The source UE and the cooperative UE in the radio resource control (RRC) connected state obtain the uplink scheduling information by detecting the PDCCH scrambled by their respective C-RNTIs, and then send the physical uplink shared channel (PUSCH) data to the network device based on the uplink scheduling information.

[0113] In new radio (NR) systems, multiple search space sets (SSTs) are configured for the UE within each downlink bandwidth subset (BWP) within the serving cell. Each SST contains search spaces for one or more aggregation levels. In NR, time domain configuration information for the SSTs is added. The UE must detect candidate PDCCHs in the time domain based on the configured SSTs. The time domain configuration information for the PDCCH SSTs includes the detection period and slot offset, symbol position, number of slots, and control resource set index.

[0114] For example, the time domain configuration information of the search space set of the source UE is: the detection period is 5 time slots, the time slot offset is 1 slot, the number of time slots is 2 slots, the control resource set index corresponds to a physical resource CORESET that occupies 2 orthogonal frequency division multiplexing (OFDM) symbols, and the symbol position is OFDM symbol 0 and OFDM symbol 4 in the time slot. Then, the source UE detects CORESET on symbol 0 and symbol 4 in time slot 1 and time slot 2 in every 5 time slots according to the detection period, and CORESET occupies 2 OFDM symbols in the time domain, such as Figure 1 As shown in .

[0115] In addition, the time domain configuration information of the search space set of the cooperative UE is: the detection period is 10 slots, the time slot offset is 8 slots, the number of time slots is 2 slots, the control resource set index corresponds to a CORESET occupying 2 OFDM symbols, and the symbol position is OFDM symbol 6 and OFDM symbol 10 in the time slot. Then, the cooperative UE detects CORESET in time slot 8 and symbol 6 and symbol 10 in time slot 9 in every 10 time slots according to the detection period, and CORESET occupies 2 OFDM symbols in the time domain, as shown in FIG. Figure 1 shown.

[0116] According to the above configuration, if the source UE detects the PDCCH scrambled by the source UE's C-RNTI in slots 1 and 2 to obtain uplink scheduling information, and the collaborative UE detects the corresponding PDCCH in slots 8 and 9, the source UE needs to wait for a period of time after the detection is completed before sending uplink PUSCH data, thus introducing a waiting delay.

[0117] In addition, if the PDCCH detection time of the source UE and the collaborative UE is significantly different, according to the uplink time domain resource allocation relationship in NR, one possible situation is: when the source UE detects the PDCCH sent by the base station and sends uplink PUSCH data, the collaborative UE has not yet detected the PDCCH. At this time, the source UE and the collaborative UE cannot achieve collaborative diversity transmission.

[0118] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 2As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be a base transceiver station (BTS) in a GSM system or a CDMA system, a base station (NB) in a WCDMA system, an evolutionary node B (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future evolved public land mobile network (PLMN), etc.

[0119] The communication system 100 also includes at least one user equipment located within the coverage of the network device 110, including a source UE 120 and a cooperating UE 130. The user equipment may be a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a user terminal device in a 5G network, or a user terminal device in a future-evolved PLMN.

[0120] Optionally, device-to-device (D2D) communication may be performed between the source UE 120 and the cooperative UE 130 .

[0121] Optionally, the 5G system or 5G network may also be referred to as an NR system or NR network.

[0122] Figure 1 One network device and two user devices are shown as an example. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of user devices within its coverage area. This embodiment of the present application does not limit this.

[0123] Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0124] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be called a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 with communication functions, a source UE 120 and a collaborative UE 130. The network device 110, the source UE 120 and the collaborative UE 130 may be the specific devices described above and will not be repeated here; the communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0125] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0126] See also Figure 3 , Figure 3 A schematic diagram of a method for determining a cooperative user device provided in an embodiment of the present application. Figure 2 Take the network system shown as an example, Figure 3 As shown, the method for determining a cooperative user equipment executed on the network system includes:

[0127] S101. A first device sends collaboration request information to multiple candidate devices, where the collaboration request information is used by the multiple candidate devices to determine whether a collaboration condition is met.

[0128] The candidate devices include the second device, and multiple candidate devices are selected by the first device. The multiple candidate devices and the first device belong to the same cell and operate in the same frequency band.

[0129] The collaboration request information includes: channel quality information between the first device and the network device.

[0130] S102. Multiple candidate devices receive the collaboration request information from the first device and determine whether a collaboration condition is met based on the collaboration request information.

[0131] Among them, the collaboration conditions include: the channel quality between the candidate device and the network device is greater than the channel quality between the first device and the network device; the short-distance transmission link quality between the candidate device and the first device is greater than a first preset threshold; the candidate device has collaborative transmission capabilities.

[0132] Among them, the evaluation criteria for whether the candidate device has collaborative transmission capability can be various, for example, the business volume currently processed by the candidate device can be less than a preset business volume threshold, or the candidate device can have free time to process other businesses, etc., which are not limited here.

[0133] S103. When it is determined that the collaboration condition is met, one or more candidate devices send collaboration response information to the first device;

[0134] The collaborative response information includes: channel quality information between the candidate device and the network device, and short-distance transmission link quality between the candidate device and the first device.

[0135] S104. The first device receives cooperation response information sent from one or more candidate devices;

[0136] S105. The first device determines the second device among the one or more candidate devices according to the collaboration response information, and sends collaboration confirmation information to the second device.

[0137] The collaboration confirmation information includes time domain configuration information of the PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

[0138] Specifically, in NR, the base station allocates one or more search space sets to the UE and configures the time domain configuration information of each search space set. The source UE or the collaborative UE needs to detect the candidate PDCCH according to the position of the configured search space set in the time domain, that is, blindly detect the PDCCH, that is, when multiple search space sets are configured, all search space sets are polled to perform blind detection on the candidate PDCCH. The time domain configuration information of the PDCCH search space set of the first device is the time domain configuration information of all search space sets configured by the network device.

[0139] In the above method, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices. When the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, cooperative transmission is performed, which is conducive to reducing the cooperative transmission delay.

[0140] In a possible implementation manner, the first device determining the second device among the one or more candidate devices according to the collaboration response information includes:

[0141] The first device determines the second device from the one or more candidate devices according to the cooperation response information and a channel quality optimal criterion.

[0142] Optionally, the specific implementation method of the first device determining the second device from the one or more candidate devices according to the collaborative response information and the channel quality optimal criterion can be various. For example, it can be determined that the second device has the best channel quality with the network device from one or more candidate devices, or it can be selected from one or more candidate devices that has the best short-distance communication quality with the first device as the second device, etc., which are not limited here.

[0143] In this possible implementation manner, the first device determines the second device from the one or more candidate devices according to the cooperation response information and an optimal channel quality criterion, including:

[0144] The first device selects, from the one or more candidate devices, a second reference device whose short-distance transmission link quality with the first device is higher than a second preset threshold;

[0145] The first device selects, from the second reference devices, a second device whose channel quality with the network device is greater than a third preset threshold.

[0146] The quality of the short-distance transmission link between the first device and the second device can be measured by the signal-to-noise ratio (SNR) of the received signal, wherein the second preset threshold can be, for example, 20 dB.

[0147] The channel quality may be determined by a channel quality indicator (CQI) or a signal-to-noise ratio. When the channel quality is indicated by the CQI, the third preset threshold may be, for example, 20, 22, etc., which is not limited here.

[0148] It can be seen that in this embodiment, the first device selects a second device from the candidate device that has better short-distance transmission link quality with the first device and better channel quality between the candidate device and the network device, which is conducive to improving the efficiency of collaborative transmission.

[0149] In one possible embodiment, the collaboration confirmation information is used by the second device to determine whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information. If so, the second device sends first collaboration establishment information to the network device, and the first collaboration establishment information includes the C-RNTI information of the first device.

[0150] The time domain configuration information of the PDCCH search space sets of the second device and the first device meeting the consistency condition means that the number of the PDCCH search space sets of the first device and the PDCCH search space sets of the second device is the same and the one-to-one correspondence meets the consistency.

[0151] Among them, the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset conditions, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

[0152] The preset conditions are:

[0153]

[0154] Among them, n1 is the first time slot offset, n2 is the second time slot offset, n1 <n2,μ PUSCH and μ PDCCH They are the subcarrier spacing configuration information of the physical uplink shared channel PUSCH and PDCCH respectively, and K2 depends on the PUSCH configuration.

[0155] Wherein, K2 takes the value of j or j+1 or j+2 or j+3, as shown in Table 1 below:

[0156] Table 1μ PUSCH The corresponding relationship between

[0157] <![CDATA[μ PUSCH ]]> j 0 1 1 1 2 2 3 3

[0158] Among them, if the service that the first device currently needs to collaboratively transmit is a service with low latency requirements, the consistency condition is that the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset is the same as the second time slot offset. Among them, the service with low latency requirements can be, for example, games, virtual reality, video, real-time calls and other services.

[0159] In one possible implementation, Figure 3As shown, S106, when the second device determines, according to the collaboration confirmation information, that the time domain configuration information of the PDCCH search space set of the second device and the first device does not meet the consistency condition, the second device sends second collaboration establishment information to the network device, where the second collaboration establishment information includes the C-RNTI information of the first device and a request to adjust the time domain configuration information of the search space set;

[0160] S107: The network device adjusts the time domain configuration information of the PDCCH search space set of the second device to be the same as that of the first device according to the time domain configuration information adjustment request of the search space set.

[0161] It can be seen that after the first device selects the second device, when the second device determines that the time domain configuration information of its PDCCH search space set and the first device does not meet the consistency condition, it requests the network device to adjust its configuration information to be the same as the first device to solve the problem of large collaborative transmission delay or inability to collaborate.

[0162] See also Figure 4 , Figure 4 A schematic diagram of another method for determining a cooperative user device provided in an embodiment of the present application. Figure 2 Take the network system shown as an example, Figure 4 As shown, the method for determining a cooperative user equipment executed on the network system includes:

[0163] S201. A first device sends collaboration request information to multiple candidate devices, where the collaboration request information is used by the multiple candidate devices to determine whether a collaboration condition is met.

[0164] The multiple candidate devices include the second device, the multiple candidate devices are selected by the first device, and the multiple candidate devices and the first device belong to the same cell and operate in the same frequency band.

[0165] The collaboration request information includes: channel quality information between the first device and the network device.

[0166] S202. Multiple candidate devices receive the collaboration request information from the first device and determine whether a collaboration condition is met based on the collaboration request information.

[0167] Among them, the collaboration conditions include: the channel quality between the candidate device and the network device is greater than the channel quality between the first device and the network device; the short-distance transmission link quality between the candidate device and the first device is greater than a first preset threshold; the candidate device has collaborative transmission capabilities.

[0168] Among them, the evaluation criteria for whether the candidate device has collaborative transmission capability can be various, for example, the business volume currently processed by the candidate device can be less than a preset business volume threshold, or the candidate device can have free time to process other businesses, etc., which are not limited here.

[0169] S203: When it is determined that the collaboration condition is met, one or more candidate devices send collaboration response information to the first device;

[0170] The collaborative response information includes: channel quality information between the candidate device and the network device, short-distance transmission link quality between the candidate device and the first device, and time domain configuration information of the PDCCH search space set of the candidate device.

[0171] Specifically, in NR, the base station allocates one or more search space sets to the UE and configures the time domain configuration information of each search space set. The source UE or the collaborative UE needs to detect the candidate PDCCH according to the position of the configured search space set in the time domain, that is, blindly detect the PDCCH, that is, when multiple search space sets are configured, all search space sets are polled to perform blind detection on the candidate PDCCH. The time domain configuration information of the PDCCH search space set of the first device is the time domain configuration information of all search space sets configured by the network device.

[0172] S204. The first device receives cooperation response information sent from one or more candidate devices;

[0173] S205. The first device determines the second device among the one or more candidate devices according to the collaboration response information, and sends collaboration confirmation information to the second device.

[0174] Among them, when the first device sends collaboration confirmation information to the second device, the first device can simultaneously send collaboration establishment information to the network device, and the collaboration establishment information may include the cell radio network temporary identifier C-RNTI information of the second device, or the second device sends collaboration establishment information to the network device after receiving the collaboration confirmation information, and the collaboration establishment information may include the C-RNTI information of the first device, which is not limited here.

[0175] In the above method, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices. When the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, cooperative transmission is performed, which is conducive to reducing the cooperative transmission delay.

[0176] The specific implementation manner in which the first device determines the second device among the one or more candidate devices according to the collaboration response information is as follows:

[0177] In a possible implementation manner, the first device determining the second device among the one or more candidate devices according to the collaboration response information includes:

[0178] The first device selects a first reference device from the one or more candidate devices according to a channel quality constraint;

[0179] The first device determines the second device according to time domain configuration information of the PDCCH search space set of the first reference device.

[0180] In a possible implementation, the channel quality constraint condition includes a channel orthogonality condition between the first device and the candidate device, and a short-distance transmission link quality condition between the candidate device and the first device.

[0181] Among them, the channel orthogonality condition between the first device and the candidate device can be that the first device and the second device are paired through correlation orthogonality, and the channel correlation is determined to be less than a preset correlation threshold, that is, the interference between the first device and the second device is small and the orthogonality is better; or it can be that the orthogonality factor of the Schmidt orthogonal pairing of the first device and the second device is greater than the preset orthogonality factor threshold, that is, the channel orthogonality is better.

[0182] Among them, the short-distance transmission link quality conditions are as mentioned above Figure 3 The corresponding method side embodiments are described in detail and will not be repeated here.

[0183] In a possible implementation manner, the first device determining the second device according to time domain configuration information of the PDCCH search space set of the first reference device includes:

[0184] The first device determines, according to the time domain configuration information of the PDCCH search space set of the first reference device, whether there is a first reference device in the first reference device whose time domain configuration information of the PDCCH search space set satisfies a consistency condition with that of the first device;

[0185] When it is determined that there is a first reference device whose time domain configuration information of the PDCCH search space set satisfies the consistency condition with that of the first device, the first reference device whose time slot offset difference with the first device is the smallest is selected from the first reference devices that satisfy the consistency condition as the second device.

[0186] Wherein, the consistency condition is as above Figure 3 I will not elaborate on the above.

[0187] In a possible implementation manner, after the first device determines, based on the time domain configuration information of the PDCCH search space set of the first reference device, whether there is a first reference device in the first reference device whose time domain configuration information of the PDCCH search space set satisfies a consistency condition with that of the first device, the method further includes:

[0188] When it is determined that there is no device in the first reference device whose time domain configuration information meets the consistency condition with the PDCCH search space set of the first device, the first device determines the second device from the one or more candidate devices according to the collaborative response information and the channel quality optimal criterion.

[0189] The specific implementation of the first device determining the second device from the one or more candidate devices according to the cooperation response information and the channel quality optimal criterion is as described above. Figure 3 The corresponding method side embodiment is described, and after the first device sends the collaboration confirmation information to the second device, the second device sends the collaboration establishment information to the network device, and the same Figure 3 In a corresponding embodiment, the collaborative establishment information includes the C-RNTI information of the first device and a request to adjust the time domain configuration information of the search space set. The network device adjusts the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same based on the received collaborative establishment information, which will not be repeated here.

[0190] See also Figure 5 , Figure 5 This is a schematic diagram of a collaborative user equipment determination device provided in an embodiment of the present application. The collaborative user equipment determination device 300 includes: a transceiver module 301 and a processing module 302.

[0191] In one implementation, when the cooperative user equipment determination device is applied to a first device in an uplink multi-user cooperative diversity technology, the first device is a source user equipment;

[0192] The transceiver module 301 is configured to send collaboration request information to multiple candidate devices, where the collaboration request information is used by the multiple candidate devices to determine whether collaboration conditions are met; and to receive collaboration response information sent from one or more candidate devices, where the collaboration response information is response information sent to the first device by the one or more candidate devices when the collaboration conditions are determined to be met.

[0193] The processing module 302 is configured to determine the second device among the one or more candidate devices according to the collaboration response information, and send collaboration confirmation information to the second device through the transceiver module.

[0194] In an embodiment of the present application, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices, and perform cooperative transmission when the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, which is conducive to reducing the cooperative transmission delay.

[0195] In a possible implementation manner, the cooperation request information includes: channel quality information between the first device and the network device.

[0196] In one possible implementation, the collaboration conditions include: the channel quality between the candidate device and the network device is greater than the channel quality between the first device and the network device; the short-distance transmission link quality between the candidate device and the first device is greater than a first preset threshold; and the candidate device has collaborative transmission capabilities.

[0197] In one possible implementation, the collaborative response information includes: channel quality information between the candidate device and the network device, short-distance transmission link quality between the candidate device and the first device, and time domain configuration information of the physical downlink control channel PDCCH search space set of the candidate device.

[0198] In one possible embodiment, in terms of determining the second device among the one or more candidate devices based on the collaborative response information, the processing module 302 is specifically used to: select a first reference device from the one or more candidate devices based on a channel quality constraint condition; and determine the second device based on the time domain configuration information of the PDCCH search space set of the first reference device.

[0199] In a possible implementation, the channel quality constraint condition includes a channel orthogonality condition between the first device and the candidate device, and a short-distance transmission link quality condition between the candidate device and the first device.

[0200] In one possible embodiment, in terms of determining the second device based on the time domain configuration information of the PDCCH search space set of the first reference device, the processing module 302 is specifically used to: determine, based on the time domain configuration information of the PDCCH search space set of the first reference device, whether there is a first reference device in the first reference device whose time domain configuration information satisfies a consistency condition with the time domain configuration information of the PDCCH search space set of the first device; and when it is determined that there is a first reference device whose time domain configuration information satisfies a consistency condition with the time domain configuration information of the PDCCH search space set of the first device, select, from the first reference devices that satisfy the consistency condition, the first reference device having the smallest time slot offset difference with the first device as the second device.

[0201] In a possible embodiment, after determining whether there is a first reference device in the first reference device based on the time domain configuration information of the PDCCH search space set of the first reference device, the processing module 302 is further used to: when it is determined that there is no device in the first reference device whose time domain configuration information meets the consistency condition with the PDCCH search space set of the first device, determine the second device from the one or more candidate devices according to the collaborative response information and the channel quality optimal criterion.

[0202] In a possible implementation, the cooperation response information includes: channel quality information between the candidate device and the network device, and short-distance transmission link quality between the candidate device and the first device.

[0203] In a possible implementation, in terms of determining the second device among the one or more candidate devices based on the collaborative response information, the processing module 302 is specifically used to: determine the second device from the one or more candidate devices based on the collaborative response information according to the channel quality optimal criterion.

[0204] In one possible embodiment, in terms of determining the second device from the one or more candidate devices according to the collaborative response information based on the channel quality optimal criterion, the processing module 302 is specifically used to: select a second reference device from the one or more candidate devices, whose short-distance transmission link quality with the first device is higher than a second preset threshold; and select the second device from the second reference devices, whose channel quality with the network device is greater than a third preset threshold.

[0205] In a possible implementation manner, the collaboration confirmation information includes time domain configuration information of a PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

[0206] In one possible embodiment, the collaboration confirmation information is used by the second device to determine whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information. If so, the second device sends first collaboration establishment information to the network device, and the first collaboration establishment information includes the C-RNTI information of the first device.

[0207] In one possible embodiment, the collaboration confirmation information is used when the second device determines that the time domain configuration information of the PDCCH search space set of the second device and the first device does not meet the consistency condition based on the collaboration confirmation information. The second device sends a second collaboration establishment information to the network device. The second collaboration establishment information includes the C-RNTI information of the first device and the time domain configuration information adjustment request of the search space set. The time domain configuration information adjustment request of the search space set is used to request the network device to adjust the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same.

[0208] In one possible embodiment, the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset conditions, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

[0209] In a possible implementation, the preset condition is:

[0210]

[0211] Among them, n1 is the first time slot offset, n2 is the second time slot offset, n1 <n2,μ PUSCH and μ PDCCH They are the subcarrier spacing configuration information of the physical uplink shared channel PUSCH and PDCCH respectively, and K2 depends on the PUSCH configuration.

[0212] It can be understood that in this implementation Figure 5 The collaborative user device determination device shown is applied to the first device in the collaborative user device determination method of the embodiment of the present application, and can implement the corresponding process of the collaborative user device determination method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0213] In another implementation, when the cooperative user equipment determining device is applied to a second device in an uplink multi-user cooperative diversity technology, the second device is a cooperative user equipment;

[0214] The transceiver module 301 is used to receive collaboration request information from the first device and determine whether the collaboration conditions are met based on the collaboration request information; and to send collaboration response information to the first device when it is determined that the collaboration conditions are met. The collaboration response information is used by the first device to select the second device from one or more candidate devices and send collaboration confirmation information to the second device.

[0215] In an embodiment of the present application, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices, and perform cooperative transmission when the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, which is conducive to reducing the cooperative transmission delay.

[0216] In a possible implementation manner, the cooperation request information includes: channel quality information between the first device and the network device.

[0217] In one possible implementation, the collaboration conditions include: the channel quality between the second device and the network device is greater than the channel quality between the first device and the network device; the short-distance transmission link quality between the second device and the first device is greater than a first preset threshold; and the second device has collaborative transmission capabilities.

[0218] In one possible embodiment, the collaborative response information includes: channel quality information between the second device and the network device, short-distance transmission link quality between the second device and the first device, and time domain configuration information of the physical downlink control channel PDCCH search space set of the second device.

[0219] In one possible embodiment, the collaborative response information is used by the first device to select a first reference device that meets the channel quality constraint conditions based on the collaborative response information of the one or more candidate devices; and is used by the first device to select the second device based on the time domain configuration information of the PDCCH search space set of the first reference device, where the one or more candidate devices and the first reference device include the second device.

[0220] In a possible implementation, the channel quality constraint condition includes a channel orthogonality condition between the first device and the candidate device, and a short-distance transmission link quality condition between the candidate device and the first device.

[0221] In one possible embodiment, the time domain configuration information of the PDCCH search space set of the first reference device is used by the first device to determine whether there is a first reference device in the first reference device whose time domain configuration information satisfies the consistency condition with the time domain configuration information of the PDCCH search space set of the first device; when it is determined that there is a first reference device whose time domain configuration information satisfies the consistency condition with the time domain configuration information of the PDCCH search space set of the first device, the first reference device with the smallest time slot offset difference with the first device is selected from the first reference devices that meet the consistency condition as the second device.

[0222] In one possible embodiment, if there is no device in the first reference device whose time domain configuration information meets the consistency condition with the PDCCH search space set of the first device, the collaborative response information is used by the first device to determine the second device from the one or more candidate devices based on the channel quality optimal criterion.

[0223] In a possible implementation, the cooperation response information includes: channel quality information between the second device and the network device, and quality of a short-distance transmission link between the second device and the first device.

[0224] In a possible implementation manner, the cooperation response information is used by the first device to determine the second device from the one or more candidate devices according to an optimal channel quality criterion.

[0225] In one possible embodiment, the collaborative response information is used by the first device to select a second reference device whose short-distance transmission link quality with the first device is higher than a second preset threshold based on the collaborative response information of the one or more candidate devices; and is used by the first device to select the second device whose channel quality with the network device is greater than a third preset threshold from the second reference devices, and the one or more candidate devices and the second reference devices include the second device.

[0226] In a possible implementation manner, the collaboration confirmation information includes time domain configuration information of a PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

[0227] In a possible implementation, the transceiver module 301 is further configured to: receive the collaboration confirmation information from the first device;

[0228] The processing module 302 is used to determine whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information. If so, the second device sends the first collaboration establishment information to the network device through the transceiver module, and the first collaboration establishment information includes the C-RNTI information of the first device.

[0229] In a possible embodiment, after determining whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information, the processing module 302 is also used to: when it is determined that the time domain configuration information of the PDCCH search space set of the first device does not meet the consistency condition, send a second collaboration establishment information to the network device through the transceiver module, the second collaboration establishment information includes the C-RNTI information of the first device, and a time domain configuration information adjustment request of the search space set, and the time domain configuration information adjustment request of the search space set is used to request the network device to adjust the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same.

[0230] In one possible embodiment, the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset conditions, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

[0231] In a possible implementation, the preset condition is:

[0232]

[0233] Among them, n1 is the first time slot offset, n2 is the second time slot offset, n1 <n2,μ PUSCH and μ PDCCH They are the subcarrier spacing configuration information of the physical uplink shared channel PUSCH and PDCCH respectively, and K2 depends on the PUSCH configuration.

[0234] It can be understood that in this implementation Figure 5 The collaborative user device determination device shown can be applied to the second device in the collaborative user device determination method of the embodiment of the present application, and can implement the corresponding process of the collaborative user device determination method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0235] In yet another implementation, when the cooperative user equipment determination device is applied to a network device:

[0236] The transceiver module 301 is used to receive collaboration establishment information sent from the second device, the collaboration establishment information includes the C-RNTI information of the first device, the collaboration establishment information indicates that the first device establishes collaborative transmission with the second device, the collaboration establishment information is information sent by the second device to the network device when receiving collaboration confirmation information from the first device, the collaboration confirmation information is information sent by the first device to the second device when the second device is selected as a collaborative user device based on collaboration response information sent by one or more candidate devices, the collaboration response information is response information sent to the first device when the one or more candidate devices determine that the collaboration conditions are met based on the collaboration request information, and the collaboration request information is information sent by the first device to multiple candidate devices requesting collaboration.

[0237] In an embodiment of the present application, the first device determines the second device to cooperate with from multiple candidate devices based on the sent cooperation request information and the received cooperation response information, and sends cooperation confirmation information to the second device. During the interaction process, the first device or the second device can determine the time domain configuration information of the physical downlink control channel PDCCH search space set between the two devices, and perform cooperative transmission when the time domain configuration information of the physical downlink control channel PDCCH search space set meets the conditions, which is conducive to reducing the cooperative transmission delay.

[0238] In a possible embodiment, the collaboration establishment information also includes a request for adjusting the time domain configuration information of the search space set, and the processing module 302 is used to adjust the time domain configuration information of the PDCCH search space set of the second device according to the collaboration establishment information. The adjusted time domain configuration information of the PDCCH search space set of the second device is the same as the time domain configuration information of the PDCCH search space set of the first device.

[0239] It can be understood that in this implementation Figure 5 The collaborative user device determination device shown can correspond to the network device in the collaborative user device determination method of the embodiment of the present application, and can implement the corresponding process of the collaborative user device determination method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0240] See also Figure 6 , Figure 6 Schematic diagram of a terminal device 400 provided in an embodiment of the present application. Figure 6 As shown, the terminal device 400 includes: a processor 410 , a communication interface 420 and a memory 430 , and the processor 410 , the communication interface 420 and the memory 430 are interconnected via an internal bus 440 .

[0241] The processor 410 may be composed of one or more general-purpose processors, such as a central processing unit (CPU), or a combination of a CPU and a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0242] The bus 440 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus 440 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6The bus is represented by only one line, but this does not mean that there is only one bus or one type of bus.

[0243] Memory 430 may include volatile memory, such as random access memory (RAM); non-volatile memory, such as read-only memory (ROM), flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); or a combination of the above. Memory 430 may be used to store programs and data, so that processor 410 can call the program code and data stored in memory 430 to implement the functions of processing module 302.

[0244] I understand. Figure 6 The terminal device shown may correspond to the first device or the second device in the collaborative user device determination method of the embodiment of the present application, and may implement the corresponding process of the collaborative user device determination method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0245] See also Figure 7 , Figure 7 Schematic diagram of a network device 500 provided in an embodiment of the present application. Figure 7 As shown, the network device 500 includes: a processor 510 , a communication interface 520 and a memory 530 , and the processor 510 , the communication interface 520 and the memory 530 are interconnected via an internal bus 540 .

[0246] The processor 510 may be composed of one or more general-purpose processors, such as a central processing unit (CPU), or a combination of a CPU and a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0247] The bus 540 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus 540 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 The bus is represented by only one line, but this does not mean that there is only one bus or one type of bus.

[0248] Memory 530 may include volatile memory, such as random access memory (RAM); non-volatile memory, such as read-only memory (ROM), flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); or a combination of the above. Memory 530 may be used to store programs and data, so that processor 510 can access program code and data stored in memory 530 to implement the functions of processing module 302.

[0249] I understand. Figure 7 The network device shown may correspond to the network device in the collaborative user device determination method of the embodiment of the present application, and may implement the corresponding process of the collaborative user device determination method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0250] An embodiment of the present application further provides a readable storage medium, which stores instructions. When the instructions are executed on a terminal device, the terminal device executes the process related to the first device in the above method embodiment.

[0251] An embodiment of the present application further provides a readable storage medium, which stores instructions. When the instructions are executed on a terminal device, the terminal device executes the process related to the second device in the above method embodiment.

[0252] An embodiment of the present application further provides a readable storage medium, which stores instructions. When the instructions are executed on a network device, the network device executes the process related to the network device in the above method embodiment.

[0253] An embodiment of the present application further provides a computer program product. When the computer program product is run on a terminal device, the terminal device executes the process related to the first device in the above method embodiment.

[0254] An embodiment of the present application further provides a computer program product, which, when executed on a terminal device, enables the terminal device to execute a process related to the second device in the above method embodiment.

[0255] An embodiment of the present application further provides a computer program product. When the computer program product is run on a network device, the network device is caused to execute the process related to the network device in the above method embodiment.

[0256] In the above embodiments, the description of each embodiment has different emphases. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0257] It should be understood that the first, second, third, fourth and various numerical numbers involved in this document are only distinctions made for the convenience of description and are not intended to limit the scope of this application.

[0258] It should also be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0259] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0260] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the module division is merely a logical function division, and other division methods may be used in actual implementation.

[0261] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for determining a cooperative user device, characterized in that: A first device is applied to an uplink multi-user cooperative diversity technology, wherein the uplink multi-user cooperative diversity technology includes a first device and a second device, wherein the first device is a source user device and the second device is a cooperative user device; and the method includes: The first device sends collaboration request information to multiple candidate devices, where the collaboration request information is used by the multiple candidate devices to determine whether a collaboration condition is met; The first device receives collaboration response information sent from one or more candidate devices, where the collaboration response information is response information sent to the first device by the one or more candidate devices when determining that the collaboration condition is met; The first device determines, according to the collaboration response information, the second device among the one or more candidate devices, and sends collaboration confirmation information to the second device; Among them, the time domain configuration information of the physical downlink control channel PDCCH search space set of the first device and the time domain configuration information of the PDCCH search space set of the second device meet the consistency condition, and the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset condition, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

2. The method according to claim 1, characterized in that The collaborative response information includes: channel quality information between the candidate device and the network device, short-distance transmission link quality between the candidate device and the first device, and time domain configuration information of a physical downlink control channel PDCCH search space set of the candidate device.

3. The method according to claim 2, characterized in that The first device determining, according to the collaboration response information, the second device from the one or more candidate devices, including: The first device selects a first reference device from the one or more candidate devices according to a channel quality constraint; The first device determines the second device according to time domain configuration information of the PDCCH search space set of the first reference device.

4. The method according to claim 3, characterized in that The first device determines the second device according to time domain configuration information of a PDCCH search space set of the first reference device, including: The first device determines, according to the time domain configuration information of the PDCCH search space set of the first reference device, whether there is a first reference device in the first reference device whose time domain configuration information of the PDCCH search space set satisfies a consistency condition with that of the first device; When it is determined that there is a first reference device whose time domain configuration information of the PDCCH search space set satisfies the consistency condition with that of the first device, the first reference device whose time slot offset difference with the first device is the smallest is selected from the first reference devices that satisfy the consistency condition as the second device.

5. The method according to claim 1, wherein The cooperation response information includes: channel quality information between the candidate device and the network device, and short-distance transmission link quality between the candidate device and the first device.

6. The method according to claim 5, characterized in that The first device determining, according to the collaboration response information, the second device from the one or more candidate devices, including: The first device determines the second device from the one or more candidate devices according to the cooperation response information and a channel quality optimal criterion.

7. The method according to claim 5 or 6, characterized in that The collaboration confirmation information includes time domain configuration information of a PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

8. The method according to claim 7, characterized in that The collaboration confirmation information is used by the second device to determine whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information. If so, the second device sends the first collaboration establishment information to the network device, and the first collaboration establishment information includes the wireless network temporary identifier C-RNTI information of the first device.

9. The method according to claim 8, characterized in that The collaboration confirmation information is used when the second device determines that the time domain configuration information of the PDCCH search space set of the second device and the first device does not meet the consistency condition based on the collaboration confirmation information. The second device sends second collaboration establishment information to the network device. The second collaboration establishment information includes the C-RNTI information of the first device and the time domain configuration information adjustment request of the search space set. The time domain configuration information adjustment request of the search space set is used to request the network device to adjust the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same.

10. A method for determining a cooperative user device, characterized in that: A second device is applied to an uplink multi-user cooperative diversity technology, wherein the uplink multi-user cooperative diversity technology includes a first device and a second device, wherein the first device is a source user device and the second device is a cooperative user device; and the method includes: The second device receives the collaboration request information from the first device, and determines whether the collaboration condition is met according to the collaboration request information; When it is determined that the collaboration condition is met, the second device sends collaboration response information to the first device, where the collaboration response information is used by the first device to select the second device from one or more candidate devices, and sends collaboration confirmation information to the second device; Among them, the time domain configuration information of the physical downlink control channel PDCCH search space set of the first device and the time domain configuration information of the PDCCH search space set of the second device meet the consistency condition, and the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset condition, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

11. The method according to claim 10, characterized in that The collaborative response information includes: channel quality information between the second device and the network device, short-distance transmission link quality between the second device and the first device, and time domain configuration information of the physical downlink control channel PDCCH search space set of the second device.

12. The method according to claim 11, characterized in that The collaborative response information is used by the first device to select a first reference device that meets the channel quality constraint condition according to the collaborative response information of the one or more candidate devices; And the first device is used to select the second device according to the time domain configuration information of the PDCCH search space set of the first reference device, and the one or more candidate devices and the first reference device include the second device.

13. The method according to claim 12, characterized in that The time domain configuration information of the PDCCH search space set of the first reference device is used by the first device to determine whether there is a first reference device in the first reference device whose time domain configuration information of the PDCCH search space set satisfies a consistency condition with that of the first device; When it is determined that there is a first reference device whose time domain configuration information of the PDCCH search space set satisfies the consistency condition with that of the first device, the first reference device whose time slot offset difference with the first device is the smallest is selected from the first reference devices that satisfy the consistency condition as the second device.

14. The method according to claim 10, characterized in that The cooperation response information includes: channel quality information between the second device and the network device, and short-distance transmission link quality between the second device and the first device.

15. The method according to claim 14, characterized in that The cooperation response information is used by the first device to determine the second device from the one or more candidate devices according to an optimal channel quality criterion.

16. The method according to claim 14 or 15, characterized in that The collaboration confirmation information includes time domain configuration information of a PDCCH search space set of the first device and cell radio network temporary identifier C-RNTI information of the first device.

17. The method according to claim 16, characterized in that The method further comprises: The second device receives the collaboration confirmation information from the first device; The second device determines whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets the consistency condition based on the collaboration confirmation information. If so, the second device sends first collaboration establishment information to the network device, and the first collaboration establishment information includes the wireless network temporary identifier C-RNTI information of the first device.

18. The method according to claim 17, characterized in that After the second device determines, according to the cooperation confirmation information, whether the time domain configuration information of the PDCCH search space set of the second device and the first device meets a consistency condition, the method further includes: When the second device determines that the time domain configuration information of the PDCCH search space set of the first device does not meet the consistency condition, the second device sends second collaboration establishment information to the network device, and the second collaboration establishment information includes the C-RNTI information of the first device and the time domain configuration information adjustment request of the search space set. The time domain configuration information adjustment request of the search space set is used to request the network device to adjust the time domain configuration information of the PDCCH search space set of the second device and the first device to be the same.

19. A method for determining a cooperative user device, characterized in that: The method comprises: The network device receives collaboration establishment information sent from the second device, the collaboration establishment information including the C-RNTI information of the first device, the collaboration establishment information instructing the first device to establish collaborative transmission with the second device, the collaboration establishment information being information sent by the second device to the network device when receiving collaboration confirmation information from the first device, the collaboration confirmation information being information sent by the first device to the second device when selecting the second device as a collaborative user device based on collaboration response information sent by one or more candidate devices, the collaboration response information being response information sent by the one or more candidate devices to the first device when determining that a collaboration condition is met based on the collaboration request information, and the collaboration request information being information sent by the first device to multiple candidate devices requesting collaboration; The network device adjusts the time domain configuration information of the PDCCH search space set of the second device according to the collaboration establishment information, and the adjusted time domain configuration information of the PDCCH search space set of the second device is the same as the time domain configuration information of the PDCCH search space set of the first device.

20. A device for determining a cooperative user device, characterized in that: A first device applied to an uplink multi-user cooperative diversity technology, wherein the uplink multi-user cooperative diversity technology further includes a second device, the first device being a source user device, and the second device being a cooperative user device; The cooperative user equipment determining device includes: a transceiver module, configured to send collaboration request information to multiple candidate devices, where the collaboration request information is used by the multiple candidate devices to determine whether collaboration conditions are met; and to receive collaboration response information sent from one or more candidate devices, where the collaboration response information is response information sent to the first device by the one or more candidate devices when the collaboration conditions are determined to be met; a processing module, configured to determine the second device among the one or more candidate devices according to the collaboration response information, and send collaboration confirmation information to the second device through the transceiver module; Among them, the time domain configuration information of the physical downlink control channel PDCCH search space set of the first device and the time domain configuration information of the PDCCH search space set of the second device meet the consistency condition, and the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset condition, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

21. A collaborative user equipment determination device, characterized in that: A second device applied to an uplink multi-user cooperative diversity technology, wherein the uplink multi-user cooperative diversity technology further includes a first device, the first device being a source user device, and the second device being a cooperative user device; The cooperative user equipment determining device includes: a transceiver module, configured to receive collaboration request information from the first device, and determine whether collaboration conditions are met based on the collaboration request information; and, when it is determined that the collaboration conditions are met, send collaboration response information to the first device, wherein the collaboration response information is used by the first device to select the second device from one or more candidate devices, and send collaboration confirmation information to the second device; Among them, the time domain configuration information of the physical downlink control channel PDCCH search space set of the first device and the time domain configuration information of the PDCCH search space set of the second device meet the consistency condition, and the consistency condition is: the detection period of the PDCCH search space set of the first device and the second device is the same, and the first time slot offset and the second time slot offset meet the preset condition, the first time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the first device, and the second time slot offset is the time slot offset in the time domain configuration information of the PDCCH search space set of the second device.

22. A collaborative user equipment determination device, characterized in that: Applied to a network device, the cooperative user equipment determination device includes: a transceiver module, configured to receive collaboration establishment information sent from a second device, the collaboration establishment information including C-RNTI information of the first device, the collaboration establishment information instructing the first device to establish collaborative transmission with the second device, the collaboration establishment information being information sent by the second device to the network device upon receiving collaboration confirmation information from the first device, the collaboration confirmation information being information sent by the first device to the second device when the second device is selected as a collaborative user device based on collaboration response information sent by one or more candidate devices, the collaboration response information being response information sent by the one or more candidate devices to the first device when the collaboration condition is determined to be met based on the collaboration request information, and the collaboration request information being information sent by the first device to multiple candidate devices requesting collaboration; A processing module is used to adjust the time domain configuration information of the PDCCH search space set of the second device according to the collaboration establishment information, and the adjusted time domain configuration information of the PDCCH search space set of the second device is the same as the time domain configuration information of the PDCCH search space set of the first device.

23. A terminal device, characterized in that: The terminal device includes a memory and a processor, and the processor executes computer instructions stored in the memory, so that the terminal device executes the method according to any one of claims 1 to 9.

24. A terminal device, characterized in that: The terminal device includes a memory and a processor, and the processor executes computer instructions stored in the memory, so that the terminal device executes the method according to any one of claims 10 to 18.

25. A network device, characterized in that: The network device includes a memory and a processor, and the processor executes computer instructions stored in the memory, so that the network device performs the method according to claim 19.

26. A readable storage medium, characterized in that The readable storage medium stores instructions, and when the instructions are executed on the terminal device, the terminal device executes the method according to any one of claims 1 to 9.

27. A readable storage medium, characterized in that The readable storage medium stores instructions, and when the instructions are executed on the terminal device, the terminal device executes the method according to any one of claims 10 to 18.

28. A readable storage medium, characterized in that The readable storage medium stores instructions, and when the instructions are executed on the network device, the network device executes the method according to claim 19.

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