Random access method, device and communication equipment

Abstract

The present application relates to a random access method, apparatus and communication equipment. The random access method includes: a user equipment UE receives SUL configuration information, the SUL configuration information includes multiple SULs, multiple SDLs respectively matched with the multiple SULs, and SDL measurement configuration information; the reference signal strengths of the multiple SDLs are measured according to the SDL measurement configuration information; at least one first SDL is selected from the multiple SDLs according to the reference signal strengths of the multiple SDLs, and a second SDL is selected from the at least one first SDL, and the reference signal strength of the second SDL is the highest among the at least one first SDL; random access is initiated from the SUL corresponding to the second SDL. By configuring multiple pairs of SULs and SDLs through a network device, the UE can measure the reference signal strength of the SDL, and select the SUL to initiate random access according to the reference signal strength of the SDL, so that the UE can distinguish different SULs according to the selected strategy.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a random access method, device and communication device. Background Art

[0002] SUL (Super Uplink / Supplementary Uplink) was introduced in the new radio (NR) protocol of the 3rd generation partnership project (3GPP). SUL is mainly used to carry users at the edge of NR coverage. The introduction of SUL can supplement the uplink coverage of high-frequency NR. The terminal can perform uplink transmission through the normal uplink (NUL) or SUL. When the coverage of the uplink carrier deteriorates, the terminal can switch from NUL to SUL.

[0003] With the development of network technology, in the standardization work of the 5th generation (5G) new radio (NR), NR supports frequency bands from below 6GHz to 60GHz. Usually, long term evolution (LTE) carriers are mainly deployed in frequency bands below 3GHz, and NR carriers are mainly deployed in frequency bands above 3GHz.

[0004] In actual use, in order to make full use of the uplink resources in the LTE carrier, the uplink transmission in NR and the uplink transmission in LTE can share the uplink resources in the LTE carrier; among them, the shared uplink resource part in the LTE carrier that can be used for NR uplink transmission can be called the supplementary uplink resources of the NR carrier. Summary of the invention

[0005] In view of this, a random access method, apparatus and communication device are proposed.

[0006] In the first aspect, an embodiment of the present application provides a random access method, the method comprising: a first network device uses a normal downlink NDL beam to send a supplementary uplink SUL configuration information corresponding to the NDL beam to a user equipment UE, the SUL configuration information comprising a SUL identifier of at least one SUL and at least one SUL threshold, and the SUL configuration information corresponding to different NDL beams is different; wherein, the at least one SUL is a SUL provided by a second network device; the SUL identifier of the at least one SUL comprises a first SUL identifier, and the at least one SUL threshold comprises a first SUL threshold corresponding to the first SUL identifier; the UE measures a reference signal strength corresponding to the NDL beam, and if the reference signal strength is less than the first SUL threshold, the UE initiates random access from the first SUL corresponding to the first SUL identifier.

[0007] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. Different SULs are distinguished by different beams. The random access method provided in the embodiment of the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0008] In combination with a first possible implementation of the first aspect, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the SUL configuration information also includes one of the following parameters or a combination of several parameters for each SUL: a first validity identifier, priority information; and / or, the NDL beam also includes an SSBindex, and different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access. The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0009] In combination with the first aspect or the first possible implementation of the first aspect, in a second possible implementation, the SUL configuration information also includes a second validity identifier of the SUL threshold. In an area without SUL coverage, the SUL threshold included in the SUL configuration information in the SIB of the NDL beam sent by the first network device may be invalid, so that the UE can initiate random access from NUL. It can be used to distinguish between areas with SUL coverage and areas without SUL coverage, solving the problem that a single RSRP threshold cannot distinguish between areas without SUL coverage.

[0010] In the second aspect, an embodiment of the present application provides a random access method, which includes: a user equipment UE receives a normal downlink NDL beam sent by the above-mentioned first network device, and the NDL beam includes supplementary uplink SUL configuration information corresponding to the NDL beam, and the SUL configuration information includes a SUL identifier of at least one SUL and at least one SUL threshold; wherein, the NDL beam is a beam sent by the first network device, and the at least one SUL is a SUL provided by the second network device; the SUL identifier of the at least one SUL includes a first SUL identifier, and the at least one SUL threshold includes a first SUL threshold corresponding to the first SUL identifier; the UE measures the reference signal strength corresponding to the NDL beam; if the reference signal strength is less than the first SUL threshold, the UE initiates random access from the first SUL corresponding to the first SUL identifier.

[0011] In combination with a first possible implementation manner of the second aspect, the UE receives different NDL beams in different areas, and different NDL beams include different SUL configuration information.

[0012] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. Different SULs are distinguished by different beams. The random access method provided in the embodiment of the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0013] In a second possible implementation manner of the second aspect, the first network device is a base station, or a small station, or other user equipment.

[0014] In combination with the second aspect, or the first possible implementation method of the second aspect, or the second possible time limit method, in a third possible implementation method, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the SUL configuration information also includes a first validity identifier and / or priority information of each SUL; the first validity identifier of the SUL corresponding to the first SUL identifier is valid and / or has the highest priority.

[0015] In combination with the second aspect, or the third possible implementation manner of the second aspect, in a fourth possible implementation manner, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the NDL beam also includes an SSBindex. The SSBindex included in different NDL beams received by the UE is different, and the SSBindex is used to indicate the first SUL.

[0016] In combination with the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, the first SUL identifier is a remainder of the value of the SSBindex and the total number of multiple SULs, or the first SUL identifier is the value of the SSBindex.

[0017] The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0018] In combination with the second aspect, or any one of the third to fifth possible implementations of the second aspect, in a sixth possible implementation, the SUL configuration information also includes a second validity identifier of the at least one SUL threshold, and the method also includes: if the second validity identifier of the SUL threshold is invalid or the SUL threshold is 0 or a negative value, initiating random access from NUL.

[0019] In the area without SUL coverage, the SUL threshold included in the SUL configuration information in the SIB of the NDL beam sent by the first network device may be invalid, so that the UE can initiate random access from NUL. It can be used to distinguish between areas with SUL coverage and areas without SUL coverage, solving the problem that a single RSRP threshold cannot distinguish areas without SUL coverage.

[0020] In the third aspect, an embodiment of the present application provides a random access device, which is applied to a first network device. The device includes: a sending module, used to use a normal downlink NDL beam to send supplementary uplink SUL configuration information corresponding to the NDL beam to a user equipment UE, the SUL configuration information includes a SUL identifier of at least one SUL and at least one SUL threshold, and the SUL configuration information corresponding to different NDL beams is different; wherein, the at least one SUL is a SUL provided by a second network device; the SUL identifier of the at least one SUL includes a first SUL identifier, and the at least one SUL threshold includes a first SUL threshold corresponding to the first SUL identifier; so that the UE measures the reference signal strength corresponding to the NDL beam, and if the reference signal strength is less than the first SUL threshold, the UE initiates random access from the first SUL corresponding to the first SUL identifier.

[0021] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. Different SULs are distinguished by different beams. The random access device provided according to the embodiment of the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0022] In combination with the first possible implementation of the third aspect, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the SUL configuration information also includes the following parameters or a combination of several parameters for each SUL: a first validity identifier, priority information; and / or, the NDL beam also includes an SSBindex, and different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access. The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0023] In combination with the third aspect or the first possible implementation of the third aspect, in a second possible implementation, the SUL configuration information also includes a second validity identifier of the SUL threshold. In an area without SUL coverage, the SUL threshold included in the SUL configuration information in the SIB of the NDL beam sent by the first network device may be invalid, so that the UE can initiate random access from the NUL. It can be used to distinguish between areas with SUL coverage and areas without SUL coverage, and solve the problem that a single RSRP threshold cannot distinguish between areas without SUL coverage. In a fourth aspect, an embodiment of the present application provides a random access device that can be applied to a user equipment UE, and the device includes:

[0024] A second receiving module is used to receive a normal downlink NDL beam sent by the above-mentioned first network device, wherein the NDL beam includes supplementary uplink SUL configuration information corresponding to the NDL beam, and the SUL configuration information includes a SUL identifier of at least one SUL and at least one SUL threshold; wherein, the NDL beam is a beam sent by the first network device, and the at least one SUL is a SUL provided by the second network device; the SUL identifier of the at least one SUL includes a first SUL identifier, and the at least one SUL threshold includes a first SUL threshold corresponding to the first SUL identifier; a third measurement module is used to measure a reference signal strength corresponding to the NDL beam; a first access module is used to initiate random access from the first SUL corresponding to the first SUL identifier if the reference signal strength is less than the first SUL threshold.

[0025] In combination with a first possible implementation manner of the fourth aspect, the UE receives different NDL beams in different areas, and different NDL beams include different SUL configuration information.

[0026] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. Different SULs are distinguished by different beams. The random access device provided according to the embodiment of the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0027] In combination with a second possible implementation manner of the fourth aspect, the first network device is a base station, or a small station, or other user equipment.

[0028] In combination with the fourth aspect, or the first possible implementation method of the fourth aspect, or the second possible time limit method, in a third possible implementation method, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the SUL configuration information also includes a first validity identifier and / or priority information of each SUL; the first validity identifier of the SUL corresponding to the first SUL identifier is valid and / or has the highest priority.

[0029] In combination with the fourth aspect, or the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the NDL beam also includes an SSBindex. The SSBindex included in different NDL beams received by the UE is different, and the SSBindex is used to indicate the first SUL.

[0030] In combination with the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner, the first SUL identifier is a remainder of the value of the SSBindex and the total number of multiple SULs, or the first SUL identifier is the value of the SSBindex.

[0031] The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0032] In combination with the fourth aspect, or any one of the third to fifth possible implementations of the fourth aspect, in a sixth possible implementation, the SUL configuration information also includes a second validity identifier of the at least one SUL threshold, and the device also includes: a second access module, for initiating random access from NUL if the second validity identifier of the SUL threshold is invalid or the SUL threshold is 0 or a negative value. In an area without SUL coverage, the SUL threshold included in the SUL configuration information in the SIB of the NDL beam sent by the first network device may be invalid, so that the UE can initiate random access from NUL. It can be used to distinguish between areas with SUL coverage and areas without SUL coverage, and solve the problem that a single RSRP threshold cannot distinguish between areas without SUL coverage.

[0033] In a fifth aspect, an embodiment of the present application provides a random access method, the method comprising: a network device sends a supplementary uplink SUL configuration information to a user equipment UE, the SUL configuration information comprising: multiple SULs and multiple supplementary downlink SDLs respectively matching the multiple SULs, and SDL measurement configuration information; so that the user equipment UE measures the reference signal strength of the multiple SDLs according to the SDL measurement configuration information, and initiates random access from the SUL corresponding to the second SDL; wherein the second SDL is the one with the highest reference signal strength among at least one first SDL, and the at least one first SDL is selected by the UE from the multiple SDLs according to the reference strength of the multiple SDLs.

[0034] By configuring multiple pairs of SUL and SDL (multiple pairs of SUL and SDL), and SDL measurement configuration information corresponding to SDL, the UE can measure the reference signal strength of SDL according to the SDL measurement configuration information, and select SUL to initiate random access according to the reference signal strength of SDL, so that the UE can distinguish different SULs according to the selected strategy, which can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0035] In a first possible implementation manner of the fifth aspect, the network device sends the SUL configuration information to the UE, including: the network device omnidirectionally broadcasts the SUL configuration information.

[0036] In combination with the first possible implementation manner of the fifth aspect, in a second possible implementation manner, the SUL configuration information further includes: a normal downlink NDL threshold and / or multiple SDL thresholds.

[0037] Combined with the NDL threshold, the distance between the UE and the network device that provides NUL resources can be determined more accurately, and a more appropriate UL can be selected to initiate random access. Combined with the SDL threshold, some SULs that cannot provide services can be filtered out, and the final access SUL can be selected from the SULs that can provide services, which can improve access efficiency.

[0038] In combination with the third possible implementation method of the fifth aspect, the network device sends SUL configuration information to the UE, including: the network device uses the NDL beam to send SUL configuration information corresponding to the NDL beam to the UE, and the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information; different NDL beams correspond to different SUL configuration information.

[0039] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. The random access method according to the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0040] In combination with the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the SUL configuration information corresponding to the NDL beam also includes: an NDL threshold and / or an SDL threshold.

[0041] Combined with the NDL threshold, the distance between the UE and the network device that provides NUL resources can be determined more accurately, and a more appropriate UL can be selected to initiate random access. Combined with the SDL threshold, some SULs that cannot provide services can be filtered out, and the final access SUL can be selected from the SULs that can provide services, which can improve access efficiency.

[0042] In a fifth possible implementation method in combination with the fifth aspect, the network device sends SUL configuration information to the UE, including: the network device uses an NDL beam to send SUL configuration information corresponding to the NDL beam to the UE, the SUL configuration information corresponding to the NDL beam includes multiple SULs, multiple SDLs respectively matching the multiple SULs, and SDL measurement configuration information; the NDL beam also includes an SSBindex, different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access; and / or the SUL configuration information corresponding to the NDL beam also includes one or a combination of the following parameters for each SUL: validity identification, priority information.

[0043] The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0044] In combination with the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner, the SUL configuration information corresponding to the NDL beam also includes: an NDL threshold and / or an SDL threshold.

[0045] In a sixth aspect, an embodiment of the present application provides a random access method, the method comprising: a user equipment UE receives a supplementary uplink SUL configuration information sent by a network device in the fifth aspect, the SUL configuration information comprising multiple SULs, multiple supplementary downlink SDLs respectively matching the multiple SULs, and SDL measurement configuration information; the UE measures the reference signal strengths of the multiple SDLs according to the SDL measurement configuration information; the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, and selects a second SDL from the at least one first SDL, wherein the reference signal strength of the second SDL is the highest among the at least one first SDL; the UE initiates random access from the SUL corresponding to the second SDL.

[0046] By configuring multiple pairs of SUL and SDL (multiple pairs of SUL and SDL) and SDL measurement configuration information corresponding to SDL through the first network device, the UE can measure the reference signal strength of SDL according to the SDL measurement configuration information, and select SUL to initiate random access according to the reference signal strength of SDL, so that the UE can distinguish different SULs according to the selected strategy, which can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0047] In combination with the first possible implementation method of the sixth aspect, the UE receives SUL configuration information, including: the UE receives a normal downlink NDL beam, the NDL beam includes SUL configuration information corresponding to the NDL beam, the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information.

[0048] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. The random access method according to the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0049] In combination with the first possible implementation method of the sixth aspect, in a second possible implementation method, the SUL configuration information corresponding to the NDL beam includes multiple SULs, multiple SDLs matching the multiple SULs respectively, and SDL measurement configuration information; the NDL beam also includes an SSBindex, and different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access; and / or the SUL configuration information corresponding to the NDL beam also includes: one or a combination of the following parameters for each SUL: validity identifier, priority information.

[0050] In combination with the second possible implementation of the sixth aspect, in a third possible implementation, the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, including: the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs and one or a combination of the following parameters: SSBindex, validity identifier, priority information; the SUL corresponding to the first SDL is the SUL pointed to by the SSBindex, and the validity identifier is valid or has the highest priority. The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0051] In a fourth possible implementation manner of the sixth aspect, the UE receives the SUL configuration information, including: the UE receives the SUL configuration information broadcast by the network device of the fifth aspect.

[0052] In combination with the sixth aspect, or any one of the first to fourth possible implementations of the sixth aspect, in a fifth possible implementation, the SUL configuration information also includes NDL measurement configuration information, and the method also includes: the UE measures the reference signal strength of the normal downlink NDL; the UE selects at least one first SDL from the multiple SDLs based on the reference signal strengths of the multiple SDLs, including: the UE selects at least one first SDL from the multiple SDLs based on the reference signal strengths of the multiple SDLs and the reference signal strength of the NDL, and the reference signal strength of the at least one first SDL is greater than the reference signal strength of the NDL.

[0053] In combination with the fifth possible implementation manner of the sixth aspect, in the sixth possible implementation manner, the method also includes: if the reference signal strength of the multiple SDLs is not measured, or the measured reference signal strength of the multiple SDLs is less than or equal to the reference signal strength of the NDL, and the reference signal strength of the NDL is measured, the UE initiates random access from the NUL.

[0054] In combination with the sixth aspect, or any one of the first to fourth possible implementations of the sixth aspect, in a seventh possible implementation, the SUL configuration information also includes an NDL threshold, and the method also includes: the UE measures the reference signal strength of the normal downlink NDL; when the reference signal strength of the NDL is less than the NDL threshold, the SDL with the measured reference signal strength is the at least one first SDL.

[0055] In combination with the seventh possible implementation method of the sixth aspect, in the eighth possible implementation method, the method also includes: if the reference signal strength of NDL is not less than the NDL threshold, the UE initiates random access from NUL; if the reference signal strengths of the multiple SDLs are not measured, and the reference signal strength of the NDL is measured, the UE initiates random access from NUL.

[0056] In combination with the sixth aspect, or any one of the first to fourth possible implementations of the sixth aspect, in a ninth possible implementation, the SUL configuration information also includes an NDL threshold and an SDL threshold corresponding to the SDL, and the method also includes: the UE measures the reference signal strength of the normal downlink NDL; the reference signal strength of the at least one first SDL is greater than the corresponding SDL threshold, and a second SDL is selected from the at least one first SDL, including: if the reference signal of the NDL is less than the NDL threshold, the UE selects the second SDL with the highest reference signal strength from the first SDL to initiate random access.

[0057] In combination with the ninth possible implementation of the sixth aspect, in a tenth possible implementation, the method further includes: if the reference signal strengths of the multiple SDLs are not measured, or the measured reference signal strengths of the multiple SDLs are less than or equal to the corresponding SDL threshold, and the reference signal strength of the NDL is measured, the UE initiates random access from the NUL; if the reference signal of the NDL is greater than or equal to the NDL threshold, the UE initiates random access from the NUL. In combination with the sixth aspect, or any one of the first to fourth possible implementations of the sixth aspect, in an eleventh possible implementation, the SUL configuration information includes an SDL threshold corresponding to the SDL, and the method further includes: the UE measures the reference signal strength of the normal downlink NDL; the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, including: the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, the SDL threshold, and the reference signal strength of the NDL, and the reference signal strength of the at least one first SDL is greater than the corresponding SDL threshold and greater than the reference signal strength of the NDL.

[0058] In combination with the eleventh possible implementation manner of the sixth aspect, in a twelfth possible implementation manner, the method also includes: if the reference signal strength of the multiple SDLs is not measured, or the measured reference signal strength of the multiple SDLs is less than or equal to the corresponding SDL threshold, or the measured reference signal strength of the multiple SDLs is less than the reference signal strength of the NDL, and the reference signal strength of the NDL is measured, the UE initiates random access from the NUL.

[0059] Combined with the NDL threshold, the distance between the UE and the network device that provides NUL resources can be determined more accurately, and a more appropriate UL can be selected to initiate random access. Combined with the SDL threshold, some SULs that cannot provide services can be filtered out, and the final access SUL can be selected from the SULs that can provide services, which can improve access efficiency.

[0060] In the seventh aspect, an embodiment of the present application provides a random access device, which is applied to a network device, and the device includes: a configuration module, which is used to send supplementary uplink SUL configuration information to a user equipment UE, and the SUL configuration information includes: multiple SULs, multiple supplementary downlink SDLs respectively matching the multiple SULs, and SDL measurement configuration information, so that the user equipment UE measures the reference signal strength of the multiple SDLs according to the SDL measurement configuration information, and initiates random access from the SUL corresponding to the second SDL; wherein the second SDL is the one with the highest reference signal strength among at least one first SDL, and the at least one first SDL is selected by the UE from the multiple SDLs according to the reference strength of the multiple SDLs.

[0061] By configuring multiple pairs of SUL and SDL (multiple pairs of SUL and SDL) and SDL measurement configuration information corresponding to SDL through the first network device, the UE can measure the reference signal strength of SDL according to the SDL measurement configuration information, and select SUL to initiate random access according to the reference signal strength of SDL, so that the UE can distinguish different SULs according to the selected strategy, which can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0062] In a first possible implementation manner of the seventh aspect, the configuration module includes: a broadcast unit, configured to omnidirectionally broadcast the SUL configuration information.

[0063] In combination with the first possible implementation manner of the seventh aspect, in a second possible implementation manner, the SUL configuration information further includes: a normal downlink NDL threshold and / or multiple SDL thresholds.

[0064] Combined with the NDL threshold, the distance between the UE and the network device that provides NUL resources can be determined more accurately, and a more appropriate UL can be selected to initiate random access. Combined with the SDL threshold, some SULs that cannot provide services can be filtered out, and the final access SUL can be selected from the SULs that can provide services, which can improve access efficiency.

[0065] In combination with the third possible implementation method of the seventh aspect, the configuration module includes: a first sending unit, used to use the NDL beam to send SUL configuration information corresponding to the NDL beam to the UE, the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information; different NDL beams correspond to different SUL configuration information.

[0066] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. The random access device according to the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0067] In combination with the third possible implementation of the seventh aspect, in a fourth possible implementation, the SUL configuration information corresponding to the NDL beam also includes: an NDL threshold and / or an SDL threshold. In combination with the NDL threshold, the distance between the UE and the network device providing the NUL resources can be more accurately determined, and a more appropriate UL can be selected to initiate random access. In combination with the SDL threshold, a portion of the SULs that cannot provide services can be filtered out, and the final access SUL can be selected from the SULs that can provide services, thereby improving access efficiency.

[0068] In combination with the fifth possible implementation of the seventh aspect, the configuration module includes: a second sending unit, used to use an NDL beam to send SUL configuration information corresponding to the NDL beam, the SUL configuration information corresponding to the NDL beam includes multiple SULs, multiple SDLs respectively matching the multiple SULs, and SDL measurement configuration information; the NDL beam also includes an SSBindex, different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access; and / or, the SUL configuration information corresponding to the NDL beam also includes one of the following parameters or a combination of several parameters for each SUL: validity identifier, priority information. The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0069] In combination with the fifth possible implementation manner of the seventh aspect, in a sixth possible implementation manner, the SUL configuration information corresponding to the NDL beam also includes: an NDL threshold and / or an SDL threshold.

[0070] In the eighth aspect, an embodiment of the present application provides a random access device, applied to a user equipment UE, the device comprising: a first receiving module, used to receive a supplementary uplink SUL configuration information sent by the network device of the seventh aspect, the SUL configuration information comprising multiple SULs, multiple supplementary downlink SDLs respectively matching the multiple SULs, and SDL measurement configuration information; a first measurement module, used to measure the reference signal strength of the multiple SDLs according to the SDL measurement configuration information; a selection module, used to select at least one first SDL from the multiple SDLs according to the reference signal strength of the multiple SDLs, and select a second SDL from the at least one first SDL, wherein the reference signal strength of the second SDL is the highest among the at least one first SDL; a first access module, used to initiate random access from the SUL corresponding to the second SDL.

[0071] By configuring multiple pairs of SUL and SDL (multiple pairs of SUL and SDL) and SDL measurement configuration information corresponding to SDL through the first network device, the UE can measure the reference signal strength of SDL according to the SDL measurement configuration information, and select SUL to initiate random access according to the reference signal strength of SDL, so that the UE can distinguish different SULs according to the selected strategy, which can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0072] In combination with the first possible implementation method of the eighth aspect, the first receiving module includes: a first receiving unit, used to receive a normal downlink NDL beam, the NDL beam including SUL configuration information corresponding to the NDL beam, the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information.

[0073] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. The random access device according to the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0074] In combination with the first possible implementation method of the eighth aspect, in a second possible implementation method, the SUL configuration information corresponding to the NDL beam includes multiple SULs, multiple SDLs matching the multiple SULs respectively, and SDL measurement configuration information; the NDL beam also includes an SSBindex, and different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access; and / or the SUL configuration information corresponding to the NDL beam also includes: one or a combination of the following parameters for each SUL: validity identifier, priority information.

[0075] In combination with the second possible implementation method of the eighth aspect, in a third possible implementation method, the selection module includes: a first selection unit, used to select at least one first SDL from the multiple SDLs based on the reference signal strength of the multiple SDLs and one or a combination of the following parameters: SSBindex, validity flag, priority information; the SUL corresponding to the first SDL is the SUL pointed to by the SSBindex, and the validity flag is valid or has the highest priority.

[0076] The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0077] In a fourth possible implementation manner of the eighth aspect, the first receiving module includes: a second receiving unit, configured to receive the SUL configuration information broadcast by a network device.

[0078] In combination with the eighth aspect, or any one of the first to fourth possible implementations of the eighth aspect, in a fifth possible implementation, the SUL configuration information also includes NDL measurement configuration information, and the device also includes: a second measurement module, used to measure the reference signal strength of the normal downlink NDL; the selection module includes: a second selection unit, used to select at least one first SDL from the multiple SDLs based on the reference signal strengths of the multiple SDLs and the reference signal strength of the NDL, the reference signal strength of the at least one first SDL being greater than the reference signal strength of the NDL.

[0079] In combination with the fifth possible implementation method of the eighth aspect, in a sixth possible implementation method, the device also includes: a second access module, used to initiate random access from the NUL if the reference signal strength of the multiple SDLs is not measured, or the measured reference signal strength of the multiple SDLs is less than or equal to the reference signal strength of the NDL, and the reference signal strength of the NDL is measured.

[0080] In combination with the eighth aspect, or any one of the first to fourth possible implementations of the eighth aspect, in the seventh possible implementation, the SUL configuration information also includes an NDL threshold, and the device also includes: a second measurement module, used to measure the reference signal strength of the normal downlink NDL; when the reference signal strength of the NDL is less than the NDL threshold, the SDL with the measured reference signal strength is the at least one first SDL.

[0081] In combination with the seventh possible implementation method of the eighth aspect, in the eighth possible implementation method, the device also includes: a second access module, used for if the reference signal strength of NDL is not less than the NDL threshold, the UE initiates random access from NUL; if the reference signal strengths of the multiple SDLs are not measured, and the reference signal strength of the NDL is measured, the UE initiates random access from NUL.

[0082] In combination with the eighth aspect, or any one of the first to fourth possible implementations of the eighth aspect, in a ninth possible implementation, the SUL configuration information also includes an NDL threshold and an SDL threshold corresponding to the SDL, and the device also includes: a second measurement module, used to measure the reference signal strength of the normal downlink NDL; the reference signal strength of at least one first SDL is greater than the corresponding SDL threshold, and the selection module includes: a third selection unit, used to select a second SDL with the highest reference signal strength from the first SDL if the reference signal of the NDL is less than the NDL threshold.

[0083] In combination with the ninth possible implementation manner of the eighth aspect, in a tenth possible implementation manner, the device further includes: a second access module, configured to: if the reference signal strengths of the multiple SDLs are not measured, or the measured reference signal strengths of the multiple SDLs are less than or equal to the corresponding SDL threshold, and the reference signal strength of the NDL is measured, the UE initiates random access from the NUL;

[0084] In combination with the eighth aspect, or any one of the first to fourth possible implementations of the eighth aspect, in an eleventh possible implementation, the SUL configuration information includes an SDL threshold corresponding to the SDL, and the device also includes: a second measurement module, used to E measure the reference signal strength of the normal downlink NDL; the selection module includes: a fourth selection unit, used to select at least one first SDL from the multiple SDLs based on the reference signal strengths of multiple SDLs, the SDL threshold and the reference signal strength of the NDL, the reference signal strength of the at least one first SDL being greater than the corresponding SDL threshold and greater than the reference signal strength of the NDL.

[0085] In combination with the eleventh possible implementation manner of the eighth aspect, in a twelfth possible implementation manner, the device also includes: a second access module, used for initiating random access by the UE from the NUL if the reference signal strength of the multiple SDLs is not measured, or the measured reference signal strength of the multiple SDLs is less than or equal to the corresponding SDL threshold, or the measured reference signal strength of the multiple SDLs is less than the reference signal strength of the NDL, and the reference signal strength of the NDL is measured.

[0086] Combined with the NDL threshold, the distance between the UE and the network device that provides NUL resources can be determined more accurately, and a more appropriate UL can be selected to initiate random access. Combined with the SDL threshold, some SULs that cannot provide services can be filtered out, and the final access SUL can be selected from the SULs that can provide services, which can improve access efficiency.

[0087] In a ninth aspect, an embodiment of the present application provides a terminal device, which can execute the random access method of the above-mentioned second aspect or one or several possible implementation methods of the second aspect.

[0088] In the tenth aspect, an embodiment of the present application provides a terminal device, which can execute the random access method of the above-mentioned fourth aspect or one or several possible implementation methods of the fourth aspect.

[0089] In the eleventh aspect, an embodiment of the present application provides a computer program product, including a computer-readable code, or a non-volatile computer-readable storage medium carrying a computer-readable code. When the computer-readable code is running in an electronic device, the processor in the electronic device executes the random access method of the above-mentioned first aspect or one or more of the multiple possible implementation methods of the first aspect.

[0090] In the twelfth aspect, an embodiment of the present application provides a computer program product, including a computer-readable code, or a non-volatile computer-readable storage medium carrying a computer-readable code. When the computer-readable code is running in an electronic device, the processor in the electronic device executes the random access method of the above-mentioned third aspect or one or several of the multiple possible implementation methods of the third aspect.

[0091] These and other aspects of the present application will become more apparent from the following description of the embodiment(s). BRIEF DESCRIPTION OF THE DRAWINGS

[0092] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0093] Figure 1A This is an example diagram of a communication scenario involved in an embodiment of the present application.

[0094] Figure 1B This is an example diagram of a communication scenario involved in an embodiment of the present application.

[0095] Figure 1C A schematic diagram showing a specific scenario of non-co-site deployment according to an embodiment of the present application.

[0096] Figure 2A A schematic diagram showing random access in a communication scenario of co-site deployment.

[0097] Figure 2B A schematic diagram showing a communication scenario of non-co-site deployment according to an embodiment of the present application.

[0098] Figure 3A A schematic diagram showing a random access scenario according to an example of the present application.

[0099] Figure 3B A schematic diagram showing different SUL thresholds for different NDL beam configurations according to an embodiment of the present application.

[0100] Figure 3C A schematic diagram showing a random access scenario according to an example of the present application.

[0101] Figure 3D A schematic diagram showing a random access scenario according to an example of the present application.

[0102] Figure 3E A schematic diagram showing a random access scenario according to an example of the present application.

[0103] Figure 4A A schematic diagram showing an application scenario according to an embodiment of the present application.

[0104] Figure 4B A schematic diagram showing an application scenario according to an embodiment of the present application.

[0105] Figure 4C A schematic diagram showing an application scenario according to an embodiment of the present application.

[0106] Figure 4D A schematic diagram showing an application scenario according to an embodiment of the present application.

[0107] Figure 5A A schematic diagram showing an application scenario according to an embodiment of the present application.

[0108] Figure 5B A schematic diagram showing an application scenario according to an embodiment of the present application.

[0109] Figure 5C A schematic diagram showing an application scenario according to an embodiment of the present application.

[0110] Figure 5D A schematic diagram showing an application scenario according to an embodiment of the present application.

[0111] Fig. 6A A schematic diagram showing a random access scenario according to an example of the present application.

[0112] Figure 6B A schematic diagram showing a random access scenario according to an example of the present application.

[0113] Figure 7 An interaction diagram of a random access method according to an embodiment of the present application is shown.

[0114] Figure 8 An interaction diagram of a random access method according to another embodiment of the present application is shown.

[0115] Fig. 9 A block diagram of a random access device according to an embodiment of the present application is shown.

[0116] Fig.10 A block diagram of a random access device according to an embodiment of the present application is shown.

[0117] Fig.11 A block diagram of a random access device according to an embodiment of the present application is shown.

[0118] Fig.12 A block diagram of a random access device according to an embodiment of the present application is shown.

[0119] Fig.13 A block diagram of a network device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0120] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0121] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0122] In addition, in order to better illustrate the present application, numerous specific details are provided in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0123] Glossary

[0124] LTE, Long Term Evolution, is a wireless communication technology standard. There are two main modes: TDD (Time Division Duplex) and FDD (Frequency Division Duplex).

[0125] NR, New Radio, is a new air interface developed for 5G. The air radio interface is the wireless RF part of the loop between mobile devices and active base stations. The active base stations can be continuously switched when users move.

[0126] UE, User Equipment, user equipment, terminal equipment, user terminals in mobile communications, for example, smart phones, netbooks, tablet computers, laptops, wearable electronic devices (such as smart bracelets, smart watches, etc.), TVs, virtual reality devices, speakers, electronic ink, etc.

[0127] eNB / eNodeB, Evolved Node B, network equipment, 4G base station, is a wireless base station in the LTE network and a network element of the LTE wireless access network. It is responsible for the following functions related to the air interface: wireless link maintenance function, maintaining the wireless link with the terminal, and responsible for the protocol conversion between the wireless link data and the IP data; wireless resource management function, including the establishment and release of the wireless link, the scheduling and allocation of wireless resources, etc.; some mobility management functions, including configuring the terminal for measurement, evaluating the quality of the terminal wireless link, and deciding the terminal's switching between cells.

[0128] gNB, next Generation Node B, NR Node B, new air interface network equipment, 5G base station.

[0129] RSRP, Reference Signal Receiving Power, is a key parameter that can represent the strength of wireless signals in LTE networks and one of the physical layer measurement requirements.

[0130] NUL, Normal UpLink, normal uplink, uplink resources provided by NR technology.

[0131] NDL, Normal DownLink, normal downlink, downlink resources provided by NR technology.

[0132] SUL, Super Uplink / Supplementary Uplink, is used to carry users at the edge of NR coverage and is a supplement to NUL.

[0133] SDL, Supplementary Downlink, is configured in pairs with SUL.

[0134] SIB, System Information Block, system information block, system information block constitutes system information, system information is cell-level information, each system information block contains a set of parameters related to a function.

[0135] SSB, synchronization signal block, synchronization signal block, is a combination of synchronization signal and PBCH block (Synchronization Signal and PBCH block), composed of primary synchronization signal (Primary Synchronization Signals, referred to as PSS), secondary synchronization signal (Secondary Synchronization Signals, referred to as SSS), PBCH (PBCH (Physical Broadcast Channel, physical broadcast channel) three parts; used for synchronizing frequency, time and other information between the terminal and the base station.

[0136] A cell, also known as a cellular cell, refers to the area covered by a base station or a part of a base station (sector antenna) in a cellular mobile communication system, within which a mobile station can communicate reliably with the base station through a wireless channel.

[0137] In order to improve uplink coverage, a lower frequency band (such as <3GHz) is introduced as SUL band (supplementary uplink band). A SUL can be associated with TDD or FDD frequency band (including NDL / NUL) and still become a cell. SUL technology allows UE to select uplink resources in NUL and SUL carriers to initiate random access. For example, the UE can know that there is a SUL carrier in the cell by parsing the SUL configuration information in the SIB, and initiate random access on the NUL or SUL carrier according to the corresponding configuration parameters (access resources, access rules). By adding initial access and data transmission on SUL, the defect that NUL is weaker than NDL in UL coverage can be compensated.

[0138] Figure 1A This is an example diagram of a communication scenario involved in an embodiment of the present application. Figure 1B This is an example diagram of a communication scenario involved in an embodiment of the present application. Figure 1A The figure shows the wireless communication scenario of LTE-NR co-site deployment. Figure 1B The figure shows the wireless communication scenario of LTE-NR non-co-site deployment. Figure 1C A schematic diagram is shown of a specific scenario of non-co-site deployment according to an embodiment of the present application. SUL can be applied to wireless communication scenarios of co-site deployment and non-co-site deployment.

[0139] like Figure 1A As shown, the network device 100 supports both LTE technology and NR technology, and belongs to LTE-NR co-site deployment. Figure 1A The dotted circle in the middle can represent the uplink coverage range of the NR carrier of the network device 100, and the solid circle can represent the uplink coverage range of the LTE carrier. LTE UE1 is an LTE terminal (i.e., it can use the uplink and downlink resources in the LTE carrier to transmit signals with the network device 100), NR UE1 is an NR terminal (i.e., it can use the uplink and downlink resources in the NR carrier to transmit signals with the network device 100), and NR UE2 is an NR terminal supporting uplink sharing (i.e., it can use the uplink and downlink resources in the NR carrier to transmit signals with the network device 100, and can also use SUL resources for uplink transmission with the network device 100). If NR UE2 uses the uplink resources in the NR carrier to send an uplink signal to the network device 100, due to the high frequency of the NR carrier, large path loss, or the limited power of NR UE2, etc., the uplink signal quality received by the network device 100 may be poor, and the uplink signal cannot be received correctly. Therefore, NR UE2 can use SUL resources (low frequency path loss is small) to send uplink signals to the network device 100, thereby improving the uplink coverage in NR. In the embodiment of the present application, signal transmission can also be described as information transmission or data transmission.

[0140] like Figure 1B As shown, network device 200 is an NR base station, network device 300 is an LTE base station, for network device 200, curve 1 represents the boundary line of the uplink coverage area of ​​NR, curve 2 represents the boundary line of the downlink coverage area of ​​NR, and the annular area between curve 2 and curve 1 represents the area where the uplink and downlink coverage does not match. Among them, NR UE3 is an NR terminal (that is, it can use the uplink and downlink resources in the NR carrier to transmit signals with network device 2), and NR UE4 is an NR terminal that supports uplink sharing (that is, it can use the uplink and downlink resources in the NR carrier to transmit signals with network device 200, and can also use SUL resources for uplink transmission with network device 300). If NR UE4 uses the uplink resources in the NR carrier to send an uplink signal to network device 200, due to the high frequency and large path loss of the NR carrier, the uplink signal quality received by network device 200 may be poor and the uplink signal cannot be received correctly. Therefore, NR UE4 can use SUL resources to send an uplink signal to network device 300 (that is, the downlink sending node and the uplink receiving node of NR UE4 are not in the same node), and then network device 300 can send the uplink signal to network device 200, thereby improving part of the uplink coverage in NR of network device 200. Figure 1B As shown, the annular area between curve 2 and curve 1 can supplement NUL through another LTE carrier to improve the uplink coverage in NR, and can also seamlessly improve the uplink coverage in NR through other multiple LTE carriers, so that the UE can use SUL resources to initiate random access.

[0141] For example, if Figure 1C As shown in Figure 2, the downlink coverage of the NR carrier of a base station (NR network device) operating at 3.5 GHz is as follows: Figure 1C As shown in the large circle in the figure, the uplink coverage of the NR carrier is as follows: Figure 1C The solid arrow in the figure is the range covered by the circle with the same diameter. The dotted sector area is the area where the uplink and downlink coverage does not match. The LTE carrier of the base station (LTE network equipment) working at 1.8GHz can be used as an uplink resource to improve the uplink coverage in NR. Figure 1C The UE in the figure is located in the area where the dotted arrow is located. It can initiate random access from the SUL and use the SUL resources to send an uplink signal to the LTE network device. The LTE network device can then send the uplink signal to the NR network device, thereby improving the NR uplink coverage of the NR network device.

[0142] exist Figure 1A In the communication scenario of co-site deployment shown, the process of UE performing random access may include:

[0143] The network device 100 sends SUL configuration information to the user equipment, and the SUL configuration information may include: frequency domain information of uplink resources and common configuration information of uplink resources, etc. Among them, the frequency domain information of uplink resources may include: uplink carrier frequency point information and uplink subcarrier offset information, etc. The common configuration information of uplink resources may include: random access channel (RACH) configuration information, physical uplink shared channel (PUSCH) configuration information, physical uplink control channel (PUCCH) configuration information, channel sounding reference signal (SRS) configuration information and power control configuration information, etc. The RACH configuration information may include: time domain (subframe, time slot, symbol and / or period, etc.) resources, frequency domain (resource block information and / or whether to perform frequency hopping, etc.), frequency domain and code division multiplexing (orthogonal cover code and / or cyclic shift, etc.) resources of the physical random access channel (PRACH), that is, the PRACH resources include at least one of time domain resources, frequency domain resources, and code domain resources.

[0144] In a possible implementation, the configuration information of uplink resources (SUL configuration information) may be carried in a system message block SIB; of course, it may also be carried in other messages, which is not limited in the embodiments of the present application.

[0145] In a possible implementation, the UE can decide whether to initiate random access from the SUL or NUL based on the distance from the NR base station. The distance from the UE to the NR base station can be measured based on the reference signal strength (RSRP) of the NDL. The SUL configuration information can carry an RSRP threshold. After the UE receives the SUL configuration information, it can measure the RSRP of the NDL of the cell where the UE is located. The distance from the UE to the network device can be measured based on the RSRP of the NDL. The RSRP of the NDL is compared with the RSRP threshold. If the RSRP of the NDL is less than the RSRP threshold, it means that the UE is far away from the network device, and the UE can initiate random access from the SUL. If the RSRP of the NDL is not less than the RSRP threshold, it means that the UE is within a certain range from the network device, and the UE can initiate random access from the NUL.

[0146] Figure 2A FIG. 4 is a schematic diagram showing random access in a communication scenario of co-site deployment. Figure 2AAs shown, the inner curve can represent the boundary of the range that can be covered when the reference signal is of the RSRP threshold size, the curve NUL represents the boundary of the range that can be covered by the NUL signal of the network device 100, the curve SUL represents the boundary of the range that can be covered by the SUL signal of the network device 100, and the curve NDL represents the boundary of the range that can be covered by the NDL signal of the network device 100. In this way, after the UE measures the RSRP of NDL, the RSRP of NDL can be compared with the RSRP threshold. If the RSRP of NDL is greater than the RSRP threshold, the UE may be within the coverage of the curve RSRP, then the service of NUL can meet the needs of the UE, and the UE can choose NUL to initiate random access. If the RSRP of NDL is not greater than the RSRP threshold, the service of NUL may not cover the location of the UE, or the signal of NUL at the location of the UE is relatively poor, but the UE is within the coverage of the service of SUL, then the UE can choose SUL to initiate random access.

[0147] The existing access rules can be used to solve the problem of UE random access in the scenario of co-site deployment. From the perspective of the long-term evolution of SUL, there are more and more applications of random access in communication scenarios without co-site deployment, but the existing rules cannot achieve good random access in communication scenarios without co-site deployment.

[0148] Figure 2B A schematic diagram showing a communication scenario of non-co-site deployment according to an embodiment of the present application is shown. Figure 2B As shown, network device 11 can support NR technology, and network device 12, network device 13 and network device 14 can support LTE technology. The boundary line of the downlink coverage area of ​​network device 11 is as shown in FIG. Figure 2B As shown by the curve NDL in FIG. 1 , the boundary line of the uplink coverage area of ​​the network device 11 is as shown in FIG. Figure 2B As shown by the curve NUL in FIG. , the curve RSRP can represent the boundary of the coverage area of ​​the RSRP threshold. Figure 2B In the example of FIG. 1 , the annular area between the curve NUL and the curve NDL can seamlessly improve the uplink coverage in NR through three LTE carriers, so that when the UE is at the coverage edge of the network device 11, it can select SUL to initiate random access. Figure 2BIn the scenario shown, a single RSRP threshold cannot distinguish different SULs, that is, the UE can only measure the distance from the UE to the network device 11 based on the measured RSRP of the NDL and the RSRP threshold. According to the RSRP threshold, the UE cannot determine the distance from the network device 12, the network device 13 or the network device 14 providing the SUL, and cannot distinguish different SULs. The UE cannot select the SUL to access based on the comparison result of the detected RSRP of the NDL and the RSRP threshold. In other words, when the UE determines that the RSRP of the NDL is less than the RSRP threshold, it cannot further select the SUL to access based on the RSRP threshold. Figure 2B A suitable SUL is selected from among the three SULs shown: SUL-1, SUL-2 and SUL-3 to initiate random access.

[0149] In addition, for Figure 1B In the communication scenario shown, if the UE is not within the coverage of the SUL of the network device 300, the UE cannot select the SUL to access based on the comparison result between the RSRP of the NDL and the RSRP threshold. That is, a single RSRP threshold cannot distinguish areas without SUL coverage.

[0150] In order to solve the above technical problems, the present application provides a random access method, which distinguishes a SUL associated with an NDL in the sent SUL configuration information, so that the user equipment of the terminal can distinguish different SULs according to the SUL configuration information, and more effectively realize SUL access in non-co-site deployment communication scenarios.

[0151] It should be noted that the random access method provided in the present application can be applied to both non-co-site deployment scenarios and co-site deployment scenarios.

[0152] The network equipment involved in the present application may include but is not limited to: a base station (BS), a transmission reception point (TRP), which may be a device deployed in a wireless access network that can communicate with a terminal. Among them, the base station may also be referred to as a radio access network (RAN) device. The network equipment involved in the embodiments of the present application may be a base station (base transceiver station, BTS) in global system of mobile communication (GSM) or code division multiple access (CDMA), or a base station (nodeB, NB) in wideband code division multiple access (WCDMA), or an evolutionary base station (eNB or eNodeB) in long term evolution (LTE), or a relay station or access point, or a base station in a future 5G network, etc., which is not limited here. Among them, the base station in the 5G network may also be referred to as a gNB.

[0153] The user equipment involved in the embodiments of the present application may be a terminal device, which may also be referred to as a terminal, which may be a wired terminal or a wireless terminal. Among them, the wireless terminal may be a device with wireless transceiver function. The terminal equipment involved in the embodiments of the present application may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it may also be deployed on the water surface (such as a ship, etc.); it may also be deployed in the air (for example, on an airplane, a balloon, and a satellite, etc.). The terminal device may also be a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in a smart grid, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like. In the embodiments of the present application, the device for realizing the function of the terminal may be a terminal, or it may be a device that supports the terminal to realize the function. In the embodiments of the present application, the device for realizing the function of the terminal is a terminal, and the terminal is a UE as an example to describe the technical solution provided in the embodiments of the present application.

[0154] The user equipment (UE) involved in the embodiments of the present application may include a handheld device, a vehicle-mounted device, a wearable device or a computing device with a wireless communication function. For example, the UE may be a mobile phone, a tablet computer or a computer with a wireless transceiver function.

[0155] Example 1

[0156] by Figure 2B Taking the application scenario shown as an example, in one possible implementation, the first network device (network device 11) can use an NDL beam to send SIBs with different configurations to the UE, wherein the SIBs include SUL configuration information, and the SIBs in different NDL beams include different SUL configuration information. Since the UE receives different NDL beams in different areas, the UE can distinguish the accessed SUL based on the NDL beam.

[0157] The SUL configuration information may include a SUL identifier of at least one SUL and at least one SUL threshold. The SUL identifier may be a symbol that can distinguish the corresponding SUL from other SULs, and the SUL threshold may represent the reference signal strength when the UE selects the uplink to access based on the measured reference signal strength. The SUL in the SUL configuration information is a SUL provided by the second network device (network device 12, or network device 13, or network device 14). The first network device may be a base station, a small station or other user equipment. Other user equipment is a user equipment that sends the NDL beam relative to the UE that receives the NDL beam. The second network device may also be a base station, a small station or other user equipment.

[0158] In a possible implementation, the SUL configuration information may also include NDL measurement configuration information, and the NDL measurement configuration information may include a reference signal type, a reference signal configuration (such as a subframe ratio, etc.).

[0159] In this way, the UE receives the NDL beam, and the UE can measure the reference signal strength corresponding to the NDL beam in the area according to the NDL measurement configuration information. The SUL threshold can be an RSRP threshold. The UE can compare the reference signal strength with at least one SUL threshold, for example, the RSRP of the NDL can be compared with at least one RSRP threshold, and initiate random access based on the comparison result.

[0160] In the implementation of the present application, the network device and the terminal device may use beamforming technology to send and receive signals. Beamforming can also be called beamforming or spatial filtering, which is a signal processing technology that uses a sensor array to send and receive signals in a directional manner. Among them, the beamforming technology can adjust the parameters of the basic unit of the phase array so that signals at certain angles obtain constructive interference, while signals at other angles obtain destructive interference.

[0161] In the implementation manner of the present application, the SUL identifiers in the SUL configuration information corresponding to different NDL beams may be different. In the SUL configuration information corresponding to different NDL beams, the SUL thresholds may be the same or different, and the present application does not limit this.

[0162] By carrying different SUL configuration information in different NDL beams, the SUL configuration information received by the UE within the coverage area of ​​the NDL beam is certain, that is, different SUL resources are configured for different areas. In this way, for UEs located in different areas, the accessed SUL can be distinguished.

[0163] Optionally, the random access method of the above-mentioned implementation manner of the present application can be implemented in a variety of different ways, which are described below in the form of examples.

[0164] Example 1

[0165] The network device uses different NDL beams to send SIBs with different configurations, that is, the network device sends different SIBs in NDL beams in different directions, and the SIB includes SUL configuration information. Each SIB is configured with a SUL (SUL identifier) ​​and a SUL threshold. The SUL configuration information in each SIB is different. For example, the SUL identifier and / or SUL threshold of the SUL configuration information in the SIB carried in different NDL beams are different. Table 1.1 shows an implementation of Example 1.

[0166] Table 1.1

[0167]

[0168] Figure 3A A schematic diagram showing a random access scenario according to an example of the present application is shown. Figure 3AAs shown in Table 1.1, the SUL configuration information in the SIB sent by the network device 11 through beam1 includes: the SUL identifier SUL config1 and the SUL threshold rsrp-ThresholdSSB-SUL1 of SUL-1, the SUL configuration information in the SIB sent through beam2 includes: the SUL identifier SUL config2 and the SUL threshold rsrp-ThresholdSSB-SUL2 of SUL-2, and the SUL configuration information in the SIB sent through beam3 includes: the SUL identifier SUL config3 and the SUL threshold rsrp-ThresholdSSB-SUL3 of SUL-3. In other words, the network device 11 uses different NDL beams to send SIBs with different configurations.

[0169] It should be noted that the SUL threshold configured in each beam may be the same or different, and this application does not limit this. Figure 3A In the example shown, the SUL threshold configured in each NDL beam can be the same, and rsrp-ThresholdSSB-SUL1, rsrp-ThresholdSSB-SUL2 and rsrp-ThresholdSSB-SUL3 can all be as follows: Figure 3A If there is a different SUL threshold configured in the NDL beam, there is an arc-shaped SUL threshold within the coverage of the NDL beam. Figure 3B A schematic diagram showing different SUL thresholds for different NDL beam configurations according to an embodiment of the present application is shown. Figure 3B As shown, the SUL threshold rsrp-ThresholdSSB-SUL1 of SUL-1 may be NDL-RSRP1(ref), the SUL threshold rsrp-ThresholdSSB-SUL2 of SUL-2 may be NDL-RSRP2(ref), and the SUL threshold rsrp-ThresholdSSB-SUL3 of SUL-3 may be NDL-RSRP3(ref), corresponding to Figure 3B In this way, when the UE is in different beam ranges, the SUL threshold in the received SUL configuration information may be different, and the conditions for initiating random access from the SUL are also different.

[0170] UE1 within the coverage of beam1 receives beam1, measures the RSRP of NDL in the area, and compares the RSRP of NDL with NDL-RSRP1rsrp-ThresholdSSB-SUL1 (e.g. Figure 3A NDL-RSRP (ref) or Figure 3BIf the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from SUL config1 (e.g., SUL-1). If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from NUL.

[0171] UE2 within the coverage of beam2 receives beam2, measures the RSRP of NDL in the area, and compares the RSRP of NDL with rsrp-ThresholdSSB-SUL2 (e.g. Figure 3A NDL-RSRP (ref) or Figure 3B If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL2, UE2 may initiate random access from SULconfig2 (e.g., SUL-2). If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL2, UE2 may initiate random access from NUL.

[0172] UE3 within the coverage of beam3 receives beam3, measures the RSRP of NDL in the area, and compares the RSRP of NDL with rsrp-ThresholdSSB-SUL3 (e.g. Figure 3A NDL-RSRP (ref) or Figure 3B If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL3, UE2 can initiate random access from SULconfig3 (e.g., SUL-3). If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE3 can initiate random access from NUL.

[0173] Example 2

[0174] The network device uses different NDL beams to send SIBs with different configurations, that is, the network device sends different SIBs in NDL beams in different directions, and the SIB includes SUL configuration information. The difference from Example 1 is that each SIB is configured with multiple SULs (SUL identifiers), and each SIB can also be configured with a SUL threshold or SUL thresholds corresponding to multiple SULs. In this example, the SUL configuration information can also include the validity identifier of each SUL.

[0175] In this way, the UE receives the beam and, by measuring the reference signal strength of the NDL, can select a SUL from multiple SULs to initiate random access based on the reference signal strength of the NDL, the SUL threshold, and the validity identifier of each SUL.

[0176] Optionally, the validity identifiers of the multiple SULs may include one of valid and invalid identifiers.

[0177] For example, the network device sends three configured SIBs through three NDL beams.

[0178] Table 1.2

[0179]

[0180] like Figure 3A , Figure 3B As shown in Table 1.2, the SUL configuration information in the SIB sent by the network device 11 through beam1 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3, wherein the validity flag of SUL config1 is valid, and the validity flags of SULconfig2 and SUL config3 are invalid.

[0181] The SUL configuration information in the SIB sent by the network device 11 through beam2 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3, wherein the validity flag of SUL config3 is valid, and the validity flags of SUL config1 and SUL config2 are invalid.

[0182] The SUL configuration information in the SIB sent by the network device 11 through beam3 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3, wherein the validity flag of SUL config2 is valid, and the validity flags of SUL config1 and SUL config3 are invalid.

[0183] UE1 in the coverage of beam1 receives beam1, and measures the RSRP of the NDL in the area. UE1 can determine that the valid SUL is SUL config1 according to the validity identifier, and UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL1 (for example Figure 3A NDL-RSRP (ref) or Figure 3B If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from SUL config1 (SUL-1). If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from NUL.

[0184] UE2 within the coverage of beam2 receives beam2, measures the RSRP of the NDL in the area, and determines that the valid SUL is SUL config3 according to the validity identifier. UE2 compares the RSRP of NDL with rsrp-ThresholdSSB-SUL3 (e.g. Figure 3A NDL-RSRP (ref) or Figure 3B If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL3, UE2 can initiate random access from SUL config3 (SUL-3). If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE2 can initiate random access from NUL.

[0185] UE3 within the coverage of beam3 receives beam3, measures the RSRP of the NDL in the area, and determines that the valid SUL is SUL config2 according to the validity identifier. UE3 compares the RSRP of NDL with rsrp-ThresholdSSB-SUL2 (e.g. Figure 3A NDL-RSRP (ref) or Figure 3B If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL2, UE3 can initiate random access from SUL config2 (SUL-2). If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE3 can initiate random access from NUL.

[0186] It should be noted that the SUL thresholds corresponding to each SUL in the above examples may be the same or different, and this application does not limit this. The specific setting method can refer to Example 1 and will not be described in detail.

[0187] Example 3

[0188] The network device uses different NDL beams to send SIBs with different configurations, that is, the network device sends different SIBs in NDL beams in different directions, and the SIB includes SUL configuration information. The difference from Example 1 is that each SIB is configured with multiple SULs (SUL identifiers), and each SIB can also be configured with a SUL threshold or SUL thresholds corresponding to multiple SULs. In this example, the SUL configuration information can also include priority information for each SUL.

[0189] In this way, the UE receives the beam and, by measuring the reference signal strength of the NDL, can select a SUL from multiple SULs to initiate random access based on the reference signal strength of the NDL, the SUL threshold, and the priority information of each SUL. For example, when the reference signal strength of the NDL is less than the SUL threshold, the UE selects the SUL with the highest priority for access.

[0190] In a possible implementation, multiple priorities may be set, and the priority of each SUL may be specified in the configuration information of the SUL. Optionally, the priority may be expressed in the form of a numerical value, for example, the priority increases gradually from a small value to a large value, or the priority decreases gradually from a small value to a large value.

[0191] For example, the network device sends three types of configured SIBs through three NDL beams. In the SUL configuration information of the SIB, the priority increases gradually from small to large values.

[0192] Table 1.3

[0193]

[0194] Figure 3C A schematic diagram showing a random access scenario according to an example of the present application is shown. Figure 3CAs shown in Table 1.3, the SUL configuration information in the SIB sent by the network device 11 through beam1 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3, among which the priority of SUL config1 is 3, the priority of SUL config2 is 1 and the priority of SUL config3 is 2, and SUL config1 has the highest priority.

[0195] The SUL configuration information in the SIB sent by the network device 11 through beam2 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3, among which the priority of SUL config2 is 3, the priority of SUL config1 is 1 and the priority of SULconfig3 is 2, and SUL config2 has the highest priority.

[0196] The SUL configuration information in the SIB sent by the network device through beam3 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3, among which the priority of SUL config3 is 3, the priority of SUL config1 is 2, and the priority of SULconfig2 is 1, and SUL config3 has the highest priority.

[0197] like Figure 3CAs shown, UE1 within the coverage of beam1 receives beam1, and UE1 measures the RSRP of NDL in the area. UE1 can determine that the SUL with the highest priority is SUL config1 based on the priority information. UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL1. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from SUL config1. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE1 can determine that the next highest priority SUL is SUL config3 based on the priority information. UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL3. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL3, UE1 can initiate random access from SUL config3. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE1 can determine that the next highest priority SUL is SUL config2 based on the priority information. UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL2. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL2, UE1 can initiate random access from SULconfig2. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL2, UE1 can initiate random access from NUL. It should be noted that if the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE1 can also initiate random access directly from NUL. This application does not limit the specific process of initiating random access. The above process is only an example.

[0198] UE2 within the coverage of beam2 receives beam2, and UE2 measures the RSRP of NDL in the area. UE2 can determine that the SUL with the highest priority is SUL config2 based on the priority information. UE2 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL2. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL2, UE2 can initiate random access from SULconfig2. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL2, UE2 can determine that the next highest priority SUL is SUL config3 based on the priority information. UE2 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL3. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL3, UE2 can initiate random access from SULconfig3. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE2 can determine that the next highest priority SUL is SUL config1 based on the priority information. UE2 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL1. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE2 can initiate random access from SULconfig1. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE2 can initiate random access from NUL. It should be noted that if the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE2 can also initiate random access directly from NUL. This application does not limit the specific process of initiating random access. The above process is only an example.

[0199] UE3 within the coverage of beam3 receives beam3, and UE3 measures the RSRP of NDL in the area. UE3 can determine that the SUL with the highest priority is SUL config3 based on the priority information. UE3 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL3. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL3, UE3 can initiate random access from SULconfig3. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE3 can determine that the SUL with the highest priority is SUL config1 based on the priority information. UE3 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL1. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE3 can initiate random access from SUL config1. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE3 can determine that the SUL with the highest priority is SUL config2 based on the priority information. UE3 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL2. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL2, UE3 can initiate random access from SUL config2. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL2, UE3 can initiate random access from NUL. It should be noted that if the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE2 can also initiate random access directly from NUL. This application does not limit the specific process of initiating random access. The above process is only an example.

[0200] It should be noted that the SUL thresholds corresponding to each SUL in the above examples may be the same or different, and this application does not limit this. Figure 3C The curve NDL-RSRP (ref) in Figure 3B The three different circular arc curves NDL-RSRP1(ref), NDL-RSRP2(ref), and NDL-RSRP3(ref) are used to replace the above. The specific setting method can be found in Example 1 and will not be repeated here.

[0201] Example 4

[0202] The network device uses different NDL beams to send SIBs with different configurations, that is, the network device sends different SIBs in NDL beams in different directions, and the SIB includes SUL configuration information. The difference from Example 1 is that each SIB is configured with multiple SULs (SUL identifiers), and each SIB can also be configured with a SUL threshold or SUL thresholds corresponding to multiple SULs. In this example, the SUL configuration information can also include the validity identifier and priority information of each SUL.

[0203] In this way, the UE receives the beam and, by measuring the reference signal strength of the NDL, can select a SUL from multiple SULs to initiate random access based on the reference signal strength of the NDL, the SUL threshold, and the validity identifier and / or priority information of each SUL. Optionally, the validity identifiers of the multiple SULs may include both valid and invalid identifiers.

[0204] For example, the network device sends three types of configured SIBs through three NDL beams. In the SUL configuration information of the SIB, the priority increases gradually from small to large values.

[0205] Table 1.4

[0206]

[0207] like Figure 3C As shown in Table 1.4, compared with Example 3, the SUL configuration information in Example 4 also includes the validity identifier of each SUL. The specific configuration is shown in Table 1.4 and will not be repeated here.

[0208] like Figure 3CAs shown, UE1 within the coverage of beam1 receives beam1, and UE1 measures the RSRP of NDL in the area. UE1 can determine that the valid SUL with the highest priority is SULconfig1 based on the priority information and validity identifier. UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL1. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from SUL config1. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE1 can determine that the next valid SUL with the highest priority is SUL config3 based on the priority information and validity identifier. UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL3. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL3, UE1 can initiate random access from SUL config3. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE1 can directly initiate random access from NUL. Figure 3C In the embodiment, UE1 is also within the coverage of beam3. When UE1 receives beam3, it can also perform random access according to the SUL configuration information in beam3. The specific process can be referred to the description below.

[0209] UE2 within the coverage of beam2 receives beam2, and UE2 measures the RSRP of NDL in the area. UE2 can determine that the valid and highest priority SUL is SUL config2 based on the priority information and validity identifier. UE2 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL2. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL2, UE2 can initiate random access from SUL config2. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL2, UE2 can determine that the next valid and highest priority SUL is SULconfig3 based on the priority information and validity identifier. UE2 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL3. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL3, UE2 can initiate random access from SUL config3. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE2 can directly initiate random access from NUL. It should be noted that in Figure 3CIn the embodiment, UE2 is also within the coverage of beam3. When UE2 receives beam3, it can also perform random access according to the SUL configuration information in beam3. The specific process can be referred to the description below.

[0210] UE3 within the coverage of beam3 receives beam3, and measures the RSRP of NDL in the area. UE3 can determine that the valid and highest priority SUL is SUL config3 based on the priority information and validity flag. UE3 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL3. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL3, UE3 can initiate random access from SUL config3. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL3, UE3 can determine that the next valid and highest priority SUL is SULconfig1 based on the priority information and validity flag. UE3 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL1. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE3 can initiate random access from SUL config1. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE3 can directly initiate random access from NUL. It should be noted that in Figure 3C In the example, UE3 is also within the coverage of beam1. When UE3 receives beam1, it can also perform random access according to the SUL configuration information in beam1. The specific process can be found in the above description.

[0211] Example 5

[0212] The network device uses different NDL beams to send SIBs with different configurations, that is, the network device sends different SIBs in NDL beams in different directions, and the SIB includes SUL configuration information. The difference from Example 1 is that each SIB is configured with multiple SULs (SUL identifiers), and each SIB can also be configured with SUL thresholds corresponding to multiple SULs, and the multiple SUL thresholds have different sizes.

[0213] In this way, the UE receives the beam and, by measuring the reference signal strength of the NDL, can select a SUL from multiple SULs based on the reference signal strength of the NDL and the SUL threshold to initiate random access.

[0214] Table 1.5

[0215]

[0216] Figure 3D A schematic diagram showing a random access scenario according to an example of the present application. As Figure 3D shown in and Table 1.5, Figure 3D Three SULs in the beam2 direction, namely SUL-4, SUL-5, and SUL-6, are not drawn in the figure.

[0217] The SUL configuration information in the SIB sent by the network device 11 through beam1 includes: the SUL identifier SULconfig1 of SUL-1 and the SUL threshold rsrp-ThresholdSSB-SUL1. The SUL configuration information in the SIB sent by the network device 11 through beam2 includes: the SUL identifier SUL config2 of SUL-2 and the SUL threshold rsrp-ThresholdSSB-SUL2. The SUL configuration information in the SIB sent by the network device 11 through beam3 includes: the SUL identifier SUL config3 of SUL-3 and the SUL threshold rsrp-ThresholdSSB-SUL3. That is to say, the network device 11 sends SIBs with different configurations using different NDL beams. The SUL threshold rsrp-ThresholdSSB-SUL1 of SUL-1 can be NDL-RSRP1(ref), the SUL threshold rsrp-ThresholdSSB-SUL2 of SUL-2 can be NDL-RSRP2(ref), and the SUL threshold rsrp-ThresholdSSB-SUL3 of SUL-3 can be NDL-RSRP3(ref).

[0218] UE1 within the coverage range of beam1 receives beam1. UE1 measures the RSRP of the NDL in the area where it is located and compares the RSRP of the NDL with NDL-RSRP1(ref), NDL-RSRP2(ref), and NDL-RSRP3(ref). Assume that NDL-RSRP1(ref) < NDL-RSRP2(ref) < NDL-RSRP3(ref). If the RSRP of the NDL is less than NDL-RSRP1(ref), UE1 can initiate random access from SUL config1. If the RSRP of the NDL is not less than NDL-RSRP1(ref) but less than NDL-RSRP2(ref), then UE1 can initiate random access from SUL-2. If the RSRP of the NDL is not less than NDL-RSRP2(ref) but less than NDL-RSRP3(ref), then UE1 can initiate random access from SUL-3. If the RSRP of the NDL is not less than NDL-RSRP3(ref), then UE1 can initiate access from the NUL.

[0219] Embodiment 2

[0220] by Figure 2B Taking the application scenario shown as an example, in one possible implementation, the first network device (network device 11) can use an NDL beam to send differently configured SIBs to the UE, and the SIB includes SUL configuration information. The SUL configuration information configured in different NDL beams may be the same or different, and this application does not limit this. The SUL configuration information may include multiple SULs (SUL identifiers), and each SIB may also be configured with a SUL threshold or SUL thresholds corresponding to multiple SULs.

[0221] In this embodiment, one NDL cell may correspond to multiple SSBs, and one SSB may have an index (SSBindex). In this embodiment, the NDL beam sent by the first network device may also include an SSB, and the SSB indicates the SSBindex corresponding to the SSB. Different NDL beams include different SSBindexes, and the SSBindex may also indicate the SUL used to initiate access.

[0222] During initial access, the UE can blindly detect the SSB to obtain downlink video synchronization and obtain the SSBindex of the SSB. According to the SSBindex, the UE selects a SUL from multiple SULs to initiate random access.

[0223] Example 1

[0224] The first network device uses an NDL beam to send a configured SIB, which includes SUL configuration information. Each SIB is configured with multiple SULs (SUL identifiers), and each SIB can also be configured with a SUL threshold or SUL thresholds corresponding to multiple SULs. The NDL beam sent by the first network device may also include an SSB, which indicates the SSBindex corresponding to the SSB, and different NDL beams include different SSBindexes.

[0225] In this example, the SUL configuration information configured in each NDL beam in different directions is the same.

[0226] Table 2.1 shows an example of SUL configuration information of this example

[0227] Table 2.1

[0228]

[0229] Figure 3E A schematic diagram showing a random access scenario according to an example of the present application is shown. Figure 3EAs shown in Table 2.1, the SUL configuration information in the SIB sent by the network device 11 through beam1 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3, and the index of the SSB carried in beam1 sent by the network device 11 is SSBindex1.

[0230] The SUL configuration information in the SIB sent by the network device 11 through beam2 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3, and the index of the SSB carried in beam2 sent by the network device 11 is SSBindex2.

[0231] The SUL configuration information in the SIB sent by the network device 11 through beam3 includes: SUL config1 and rsrp-ThresholdSSB-SUL1, SUL config2 and rsrp-ThresholdSSB-SUL2, SUL config3 and rsrp-ThresholdSSB-SUL3. The index of the SSB carried in beam3 sent by the network device 11 is SSBindex3.

[0232] For the configuration of the SUL threshold in each SUL configuration information, please refer to the above description and will not be repeated here. In this example, the SUL configuration information in each NDL beam is the same, and the indexes of the SSBs carried by different NDL beams are different.

[0233] In a possible implementation, the UE obtains SSBindex. After receiving the SUL configuration information, the UE obtains the total number of configured SUL cells, and can select the SUL for initiating random access according to the value of SSBindex and the remainder of the total number of SUL cells. For example, in this example, assuming that SSBindex1 is 1, SSBindex2 is 2, and SSBindex3 is 3, then the SUL accessed indicated by SSBindex1 is SUL-1, the SUL accessed indicated by SSBindex2 is SUL-2, and the SUL accessed indicated by SSBindex3 is SUL-3.

[0234] In another possible implementation, an NDL cell may correspond to multiple SSBs, an SSB may have an index (SSBindex), the SSBindex corresponding to multiple SSBs are numbered sequentially, and each NDL beam corresponds to a SUL cell. The SSBindex number carried in the NDL beam sent by the first network device is the same as the number of the SUL cell. In this way, after obtaining the SSBindex, the UE receives the SUL configuration information and directly selects the SUL with the same number according to the SSBindex to initiate random access.

[0235] In this example, an SSBindex is configured in each NDL beam, but the present application is not limited to this.

[0236] Example 2

[0237] In this example, the network device can also configure multiple SSBs and the SSBindex corresponding to each SSB in each NDL beam, such as configuring a corresponding SSBindex for each SUL. When multiple SSBindexes are configured, the UE can select a SUL to initiate random access based on the reference signal strengths of multiple SSBs. For example, the UE can select the SUL corresponding to the SSB with the largest reference signal strength to initiate random access.

[0238] For example, the SUL configuration information in the SIB sent by the network device 11 through beam1 includes: SUL config1, rsrp-ThresholdSSB-SUL1, SUL config2, rsrp-ThresholdSSB-SUL2, SUL config3, rsrp-ThresholdSSB-SUL3. The beam1 sent by the network device includes multiple SSBs and multiple SSB indexes SSBindex1, SSBindex2, and SSBindex3.

[0239] The UE can select SUL to initiate random access according to the reference signal strength of the SSBs corresponding to SSBindex1, SSBindex2 and SSBindex3. For example, the reference signal strength of the SSB corresponding to SSBindex1 is the largest, and the UE can choose to initiate random access from SUL-1.

[0240] Example 3

[0241] In another possible implementation, each SUL configuration information may also include the validity identifier and / or priority information of the SUL. That is, when multiple SULs are configured in the SUL configuration information, each SUL configuration information may include one parameter or a combination of multiple parameters in the validity identifier and priority information.

[0242] The UE may select SUL to initiate random access according to one parameter or a combination of multiple parameters among the SUL threshold, SSBindex, validity identifier and priority information.

[0243] The following takes the case where each SUL configuration information includes a SUL threshold and a SUL validity identifier as an example to illustrate the process in which the UE selects a SUL to initiate random access.

[0244] Table 2.2

[0245]

[0246] As shown in Table 2.2, UE1 within the coverage of beam1 receives beam1, UE1 measures the RSRP of NDL in the area, and UE1 can determine that the valid SUL is SUL config1 based on the validity identifier. UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL1. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from SUL config1. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from NUL.

[0247] In a possible implementation, each SUL configuration information in Table 2.2 may also include only one SSBindex. In the event of a conflict between the validity identifier and the SUL pointed to by the SSBindex, the UE may select the SUL to initiate random access based on the validity identifier.

[0248] The following takes the example that each SUL configuration information includes the SUL threshold and the SUL priority information to illustrate the process of the UE selecting the SUL to initiate random access.

[0249] Table 2.3

[0250]

[0251] As shown in Table 2.3, beam1 sent by network device 11 carries SSBindex1, and the SUL configuration information in beam1 is: SUL config1 and the corresponding SUL threshold rsrp-ThresholdSSB-SUL1, the priority of SUL config1 is 2, SUL config2 and the corresponding SUL threshold rsrp-ThresholdSSB-SUL2, and the priority of SUL config2 is 1. The SUL configuration information in beam2 is: SUL config1 and the corresponding SUL threshold rsrp-ThresholdSSB-SUL1, the priority of SULconfig1 is 1, SUL config2 and the corresponding SUL threshold rsrp-ThresholdSSB-SUL2, and the priority of SULconfig2 is 2.

[0252] UE1 within the coverage of beam1 receives beam1, and measures the RSRP of NDL in the area. UE1 can determine that the indicated SUL is SUL config1 according to SSBindex1. UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL1. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL1, UE1 can initiate random access from SULconfig1. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL1, UE1 can determine that the SUL with a high priority is SUL config2 according to the priority information. UE1 can compare the RSRP of NDL with rsrp-ThresholdSSB-SUL2. If the RSRP of NDL is less than rsrp-ThresholdSSB-SUL2, UE1 can initiate random access from SUL config2. If the RSRP of NDL is not less than rsrp-ThresholdSSB-SUL2, UE1 can initiate random access from NUL.

[0253] That is to say, UE1 can preferentially initiate random access according to the SUL indicated by SSBindex. If access is not initiated from the SUL indicated by SSBindex, UE1 can further select the uplink resource for initiating access according to the measured RSRP of the NDL and the SUL threshold corresponding to the priority information. It should be noted that the above methods for initiating random access are only some examples of the present application, and the present application is not limited thereto.

[0254] Example 3

[0255] Still Figure 2BTaking the application scenario shown as an example, in this embodiment, the first network device can omnidirectionally broadcast SUL configuration information in the system SIB, and the SUL configuration information at least includes a matching relationship between multiple SULs and multiple SDLs, and SDL measurement configuration information. The SDL measurement configuration information may include a reference signal type, a reference signal configuration (such as a subframe ratio, etc.), etc. The SUL and SDL in the SUL configuration information are provided by the second network device (network device 12, or network device 13, or network device 14).

[0256] The UE receives the SIB and measures the reference signal strength of the SDL according to the SDL measurement configuration information. The UE may also measure the reference signal strength of the NDL. The measured reference signals of the SDL and NDL may both be RSRP.

[0257] The UE may select UL (SUL or NUL) to initiate random access according to the measured reference signal strength of SDL and reference signal strength of NDL. In Embodiment 3, there are many implementations for the UE to select UL to initiate random access, which are described in this application through several specific examples.

[0258] Example 1

[0259] As shown in Table 3.1, the first network device omnidirectionally broadcasts the SIB in the SIB system, and the SUL configuration information received by the UE includes: SUL config1 is associated with SDL1, SUL config2 is associated with SDL2, and SUL config3 is associated with SDL3.

[0260] Table 3.1

[0261]

[0262] Figure 4A A schematic diagram showing an application scenario according to an embodiment of the present application is shown. Figure 4A As shown, the network device 11 can broadcast the SIB configuration SUL omnidirectionally in the SIB system and configure the associated SDL (supplementary downlink). Figure 4A The curve SUL-1 and the curve SDL1 in the figure are the configured associated supplementary uplink and supplementary downlink, the curve SUL-2 and the curve SDL2 are the configured associated supplementary uplink and supplementary downlink, and the curve SUL-3 and the curve SDL3 are the configured associated supplementary uplink and supplementary downlink. In this way, the UE can also measure the distance between the UE and the second network device (network device 12, network device 13 and network device 14) by the reference signal strength of SDL. For example, the greater the reference signal strength of SDL measured by the UE, the closer the distance to the network device corresponding to the SDL may be, so that the UE can measure the distance between the UE and the second network device (network device 12, network device 13 and network device 14) by the reference signal strength of SDL. Figure 4ATaking UE1 in the example, the reference signal strength of SDL1 measured by UE1 may be greater than the reference signal strengths of SDL2 and SDL3, and is closer to the network device 12. Therefore, in this example, the UE may select SUL to initiate random access according to the reference signal strength of SDL.

[0263] Specifically, after the UE receives the SIB and measures the reference signal strength of the SDL according to the SDL measurement configuration information and measures the reference signal strength of the NDL, it can select the UL for initiating random access in the following situations.

[0264] 1. If the UE detects the reference signal strength of all SDLs among multiple SDLs, the UE can compare the reference signal strength of SDL with the reference signal strength of NDL, and select the UL corresponding to the DL with the largest reference signal strength as the carrier to initiate random access. For example, the UE detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, and the reference signal strength of SDL3 is SDL3-RSRP. The UE also detects that the reference signal strength of NDL is NDL-RSRP. If the reference signal strength of NDL is the largest, that is, NDL-RSRP is greater than SDL1-RSRP, SDL2-RSRP and SDL3-RSRP, the UE can access from NUL. If the reference signal strength of SDL1, SDL1-RSRP, is the largest, the UE can initiate random access from the SUL corresponding to SDL1.

[0265] 2. If the UE detects the reference signal strength of some SDLs among multiple SDLs, the UE can compare the reference signal strength of some SDLs among the detected multiple SDLs with the reference signal strength of NDL, and select the UL corresponding to the DL with the largest reference signal strength as the carrier to initiate random access. For example, the UE detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, and the reference signal strength of SDL3 is not detected. The UE also detects that the reference signal strength of NDL is NDL-RSRP. If the reference signal strength of NDL is the largest, and NDL-RSRP is greater than SDL1-RSRP and SDL2-RSRP, the UE can access from NUL. If the reference signal strength of SDL1, SDL1-RSRP, is the largest, the UE can initiate random access from the SUL corresponding to SDL1.

[0266] 3. If the UE does not detect the reference signal strength of any SDL among multiple SDLs, the UE does not initiate random access from the SUL. If the UE detects the reference signal strength of the NDL, the UE may initiate random access from the NUL. If the UE does not detect the reference signal strength of either SDL or NDL, the UE may not initiate random access.

[0267] Example 2

[0268] As shown in Table 3.2, compared with Example 1 of Example 3, in the SIB broadcast by the first network device in the SIB system, the SUL configuration information includes not only: SUL config1 is associated with SDL1, SUL config2 is associated with SDL2, SUL config3 is associated with SDL3, but also an NDL threshold NDL-RSRP (ref).

[0269] Table 3.2

[0270]

[0271] Figure 4B A schematic diagram showing an application scenario according to an embodiment of the present application is shown. Figure 4B As shown, except for Figure 4A Other than the same configuration, Figure 4B The NDL threshold NDL-RSRP (ref) is also configured. When the reference signal strength of NDL is less than the NDL threshold, the UE can select SUL to initiate random access based on the reference signal strength of SDL. When the reference signal strength of NDL is not less than the NDL threshold, the UE can determine that the distance to the first network device is relatively close, and the NUL provided by the first network device can meet the demand, and random access can be initiated from NUL.

[0272] Specifically, the UE receives the SIB, measures the reference signal strength of the SDL according to the SDL measurement configuration information, and after measuring the reference signal strength of the NDL, it can select the UL for initiating random access in the following situations in combination with NDL_RSRP (ref).

[0273] 1. The UE measures the reference signal strength of all SDLs in multiple SDLs. If the reference signal strength of NDL is less than the NDL threshold NDL-RSRP (ref), the UE can determine that it is far away from the first network device and may not be within the coverage of NUL. The UE can select the SUL corresponding to the SDL with the highest reference signal strength to initiate random access. If the reference signal strength of NDL is not less than the NDL threshold NDL-RSRP (ref), the UE may be close to the first network device and within the coverage of NUL, and the UE can initiate random access from NUL.

[0274] For example, if Figure 4B As shown, taking UE1 as an example, UE1 detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, and the reference signal strength of SDL3 is SDL3-RSRP (not shown in the figure). UE1 also detects that the reference signal strength of NDL is NDL-RSRP. If the reference signal strength NDL-RSRP of NDL is not less than NDL-RSRP (ref), UE1 can initiate random access from NUL. Figure 4B In the example shown, UE1 is relatively far away from the first network device 11, and the reference signal strength NDL-RSRP of NDL may be less than NDL-RSRP(ref). If the reference signal strength NDL-RSRP of NDL is less than NDL-RSRP(ref), UE1 can determine the maximum value among SDL1-RSRP, SDL2-RSRP and SDL3-RSRP. If SDL1-RSRP is the largest, UE1 can initiate random access from SUL config1 corresponding to SDL1.

[0275] 2. The UE detects the reference signal strength of some SDLs among multiple SDLs. If the reference signal strength of NDL is less than the NDL threshold NDL-RSRP (ref), the UE can determine that it is far away from the first network device and may not be within the coverage of NUL. The UE selects the SUL corresponding to the SDL with the highest reference signal strength to initiate random access based on the selected reference signal strength of some SDLs among the multiple SDLs detected. If the reference signal strength of NDL is not less than the NDL threshold NDL-RSRP (ref), the UE may be close to the first network device and within the coverage of NUL, and the UE can initiate random access from NUL.

[0276] For example, if Figure 4B As shown, taking UE1 as an example, UE1 detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, and the reference signal strength of SDL3 is not detected. UE1 also detects that the reference signal strength of NDL is NDL-RSRP. If the reference signal strength NDL-RSRP of NDL is less than NDL-RSRP(ref), UE1 can determine the maximum value of SDL1-RSRP and SDL2-RSRP. If SDL1-RSRP is the largest, UE1 can initiate random access from SULconfig1 corresponding to SDL1.

[0277] 3. The UE does not detect the reference signal strength of any SDL among multiple SDLs. The UE does not initiate random access from the SUL. If the UE detects the reference signal strength of the NDL, the UE may initiate random access from the NUL. If the UE does not detect the reference signal strength of either SDL or NDL, the UE may not initiate random access.

[0278] Example 3

[0279] In Example 3, the configuration information of the SUL may include, in addition to the matching relationship between the multiple SULs and the multiple SDLs and the SDL measurement configuration information, multiple SDL thresholds SDL X-RSRP (ref) corresponding to the multiple SDLs respectively.

[0280] As shown in Table 3.3, the first network device includes SUL configuration information in the SIB broadcast by the SIB system. The SUL configuration information includes: SUL config1 is associated with SDL1, SUL config2 is associated with SDL2, SUL config3 is associated with SDL3, and also includes multiple SDL thresholds SDL X-RSRP (ref) corresponding to multiple SDLs respectively.

[0281] Table 3.3

[0282]

[0283] Figure 4C A schematic diagram showing an application scenario according to an embodiment of the present application is shown. Figure 4C As shown, except for Figure 4A Other than the same configuration, Figure 4C The SDL thresholds corresponding to multiple SDLs are also configured. Figure 4C Only the SDL3 threshold SDL3-RSRP (ref) is drawn. Figure 4C In the application scenario shown, after measuring the reference signal strength of the SDL, the UE can select a SUL with available service according to the relationship between the reference signal strength of the SDL and the SDL threshold.

[0284] Specifically, the UE receives the SIB, measures the reference signal strength of the SDL according to the SDL measurement configuration information, and after measuring the reference signal strength of the NDL, it can select uplink resources to initiate random access in the following situations in combination with the SDL threshold.

[0285] 1. The UE detects the reference signal strength of all SDLs in multiple SDLs. When the reference signal strength of an SDL is greater than the corresponding SDL threshold, the UE can determine that the service of the SUL corresponding to the SDL is available. For example, when SDL1-RSRP is greater than SDL1-RSRP(ref), the UE can initiate random access from SUL-1 corresponding to SDL1.

[0286] Therefore, in this example, the UE can select a SUL with available services based on the reference signal strength of the SDL and the corresponding SDL threshold. According to the reference signal strength of the SDL associated with the available SUL and the reference signal strength of the NDL, select the UL corresponding to the DL with the largest reference signal strength to initiate random access. Optionally, if the reference signal strength of the NDL is greater than the reference signal strength of the SDL associated with all service-available SULs, the UE can initiate random access from the NUL. If there is an SDL with a reference signal strength greater than NDL among the SDLs associated with the service-available SUL, the UE can initiate random access from the SUL corresponding to the SDL with a reference signal strength greater than NDL.

[0287] For example, if Figure 4C As shown, taking UE1 as an example, UE1 detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, the reference signal strength of SDL3 is SDL3-RSRP, and UE1 also detects that the reference signal strength of NDL is NDL-RSRP. If UE1 compares the reference signal strength of SDL and the corresponding SDL threshold and determines that SDL1-RSRP is greater than SDL1-RSRP(ref), SDL2-RSRP is greater than SDL2-RSRP(ref), but SDL3-RSRP is less than SDL3-RSRP(ref), UE1 can determine that the services of SUL-1 corresponding to SDL1 and SUL-2 corresponding to SDL2 are available, Figure 4C As can be seen from the diagram, UE1 is closer to the second network device 12 corresponding to SDL1 and the second network device 14 corresponding to SDL2. UE1 can further compare SDL1-RSRP, SDL2-RSRP and NDL-RSRP. If NDL-RSRP is the largest, UE1E can initiate random access from NUL. If SDL1-RSRP is the largest, UE1 can initiate random access from SUL-1 corresponding to SDL1. Figure 4C In the example shown, UE1 is closer to the second network device 12, and the measured SDL1-RSRP may be the largest. UE1 can initiate random access from SUL-1 corresponding to SDL1.

[0288] 2. The UE detects the reference signal strength of some SDLs among multiple SDLs. The UE still selects the SUL with available services by comparing the reference signal strength of some SDLs detected with the corresponding SDL threshold. According to the reference signal strength of the SDL associated with the available SUL and the reference signal strength of the NDL, the UL corresponding to the DL with the largest reference signal strength is selected to initiate random access.

[0289] For example, if Figure 4C As shown, taking UE2 as an example, UE2 detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, and UE2 does not detect the reference signal of SDL3. UE2 also detects that the reference signal strength of NDL is NDL-RSRP. If UE2 compares the reference signal strength of SDL and the corresponding SDL threshold to determine that SDL1-RSRP is greater than SDL1-RSRP (ref) and SDL2-RSRP is greater than SDL2-RSRP (ref). UE2 can determine that the services of SUL-1 corresponding to SDL1 and SUL-2 corresponding to SDL2 are available. UE2 can further compare SDL1-RSRP, SDL2-RSRP and NDL-RSRP. If NDL-RSRP is the largest, UE2 can initiate random access from NUL. If SDL2-RSRP is the largest, UE2 can initiate random access from SUL-2 corresponding to SDL2. From Figure 4C In the example shown, UE2 is closer to the second network device 14, and the measured SDL2-RSRP may be the largest. UE2 can initiate random access from SUL-2 corresponding to SDL2.

[0290] 3. The UE does not detect the reference signal strength of any SDL among multiple SDLs. The UE does not initiate random access from the SUL. If the UE detects the reference signal strength of the NDL, the UE may initiate random access from the NUL. If the UE does not detect the reference signal strength of either SDL or NDL, the UE may not initiate random access.

[0291] It should be noted that, when the UE detects the reference signal strength of all or part of the SDLs in multiple SDLs, if the reference signal strength of the detected SDLs is not greater than the corresponding SDL threshold, the UE does not initiate random access from the SUL. In this case, if the reference signal of the NDL is detected, the UE can initiate random access from the NUL; if the reference signal of the NAL is not detected, the UE may not access.

[0292] The SDL threshold can be used to first screen out the SULs that can provide services, and then select appropriate access resources from the SULs where services are available, which is more efficient.

[0293] Example 4

[0294] In Example 4, the configuration information of the SUL includes not only the matching relationship between multiple SULs and multiple SDLs and the SDL measurement configuration information, but also multiple SDL thresholds SDLX-RSRP (ref) corresponding to the multiple SDLs respectively and an NDL threshold NDL-RSRP (ref).

[0295] As shown in Table 3.4, the first network device includes SUL configuration information in the SIB broadcast by the SIB system. The SUL configuration information includes: SUL config1 is associated with SDL1, SUL config2 is associated with SDL2, SUL config3 is associated with SDL3, and also includes multiple SDL thresholds SDLX–RSRP (ref) corresponding to multiple SDLs respectively, and an NDL threshold NDL-RSRP (ref).

[0296] Table 3.4

[0297]

[0298] Figure 4D A schematic diagram showing an application scenario according to an embodiment of the present application is shown. Figure 4D In the application scenario shown, after measuring the reference signal strength of SDL and the reference signal strength of NDL, the UE can select uplink resources based on the combination of the SDL threshold and the NDL threshold.

[0299] Specifically, the UE receives the SIB, measures the reference signal strength of the SDL according to the SDL measurement configuration information, and measures the reference signal strength of the NDL. Selects the SUL available for service based on the reference signal strength of the SDL and the corresponding SDL threshold, and then selects uplink resources from the SUL or NUL available for service based on the relationship between the reference signal strength of the NDL and the NDL threshold. Specifically, it can be divided into the following situations.

[0300] 1. The UE detects the reference signal strength of all SDLs in multiple SDLs. When the reference signal strength of an SDL is greater than the corresponding SDL threshold, the UE can determine that the service of the SUL corresponding to the SDL is available. For example, when SDL1-RSRP is greater than SDL1-RSRP(ref), the UE can initiate random access from SUL-1 corresponding to SDL1.

[0301] Therefore, in this example, the UE can select a SUL with available services based on the reference signal strength of the SDL and the corresponding SDL threshold. The UE can determine whether the reference signal strength of the NDL is less than the NDL threshold NDL-RSRP (ref). If the reference signal strength of the NDL is not less than the NDL threshold NDL-RSRP (ref), the UE can determine that it is close to the first network device and can initiate random access from the NUL within the service range of the NUL provided by the first network device. If the reference signal strength of the NDL is less than the NDL threshold NDL-RSRP (ref), the UE can select the SUL with the largest reference signal strength of the corresponding SDL from the SULs available for service to initiate random access.

[0302] For example, if Figure 4D As shown, taking UE1 as an example, UE1 detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, the reference signal strength of SDL3 is SDL3-RSRP, and UE1 also detects that the reference signal strength of NDL is NDL-RSRP. If UE1 compares the reference signal strength of SDL and the corresponding SDL threshold and determines that SDL1-RSRP is greater than SDL1-RSRP(ref), SDL2-RSRP is greater than SDL2-RSRP(ref), but SDL3-RSRP is less than SDL3-RSRP(ref). UE1 can determine that the services of SUL-1 corresponding to SDL1 and SUL-2 corresponding to SDL2 are available. UE1 can compare NDL-RSRP and NDL-RSRP(ref), and the result of the comparison may be that NDL-RSRP is less than NDL-RSRP(ref). Figure 4D In the example, UE1 is not within the coverage of NUL. At this time, UE1 does not initiate random access from NUL. UE1 can select SUL from available SUL-1 and SUL-2 to initiate random access. Specifically, UE1 can compare SDL1-RSRP and SDL2-RSRP, and select SUL corresponding to SDL with the largest reference signal strength to initiate random access. Figure 4D In the example, UE1 is relatively close to the second network device 12, and the measured SDL1-RSRP may be greater than SDL2-RSRP. UE1 may select SUL-1 to initiate random access.

[0303] 2. The UE detects the reference signal strength of some SDLs among multiple SDLs. The UE still selects the SUL with available services by comparing the reference signal strength of some SDLs detected with the corresponding SDL threshold. If the reference signal strength of the NDL is less than the NDL threshold NDL-RSRP (ref), the UE may select the SUL with the largest reference signal strength of the corresponding SDL from the SULs available for service to initiate random access.

[0304] For example, if Figure 4C As shown, taking UE2 as an example, UE2 detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, and UE2 does not detect the reference signal of SDL3. UE2 also detects that the reference signal strength of NDL is NDL-RSRP. If UE2 compares the reference signal strength of SDL and the corresponding SDL threshold and determines that SDL1-RSRP is greater than SDL1-RSRP (ref), and SDL2-RSRP is greater than SDL2-RSRP (ref), UE2 can determine that the services of SUL-1 corresponding to SDL1 and SUL-2 corresponding to SDL2 are available.

[0305] UE2 can compare NDL-RSRP and NDL-RSRP(ref), and the result of the comparison may be that NDL-RSRP is less than NDL-RSRP(ref). Figure 4D In the example, UE2 is no longer within the coverage of NUL. At this time, UE2 does not initiate random access from NUL. UE2 can select SUL from available SUL-1 and SUL-2 to initiate random access. Specifically, UE2 can compare SDL1-RSRP and SDL2-RSRP, and select SUL corresponding to SDL with the largest reference signal strength to initiate random access. Figure 4D In the example, UE2 is relatively close to the second network device 14, and the measured SDL2-RSRP may be greater than SDL1-RSRP. UE2 may select SUL-2 to initiate random access.

[0306] 3. The UE does not detect the reference signal strength of any SDL among multiple SDLs. The UE does not initiate random access from the SUL. If the UE detects the reference signal strength of the NDL, the UE may initiate random access from the NUL. If the UE does not detect the reference signal strength of either SDL or NDL, the UE may not initiate random access.

[0307] It should be noted that, when the UE detects the reference signal strength of all or part of the SDLs in multiple SDLs, if the reference signal strength of the detected SDLs is not greater than the corresponding SDL threshold, the UE does not initiate random access from the SUL. In this case, if the reference signal of the NDL is detected, the UE can initiate random access from the NUL; if the reference signal of the NAL is not detected, the UE may not access.

[0308] Example 4

[0309] Still Figure 2B Taking the application scenario shown as an example, in this embodiment, the first network device uses different NDL beams to send SIBs with different configurations. The SIBs include SUL configuration information. The SUL configuration information included in the SIBs in different NDL beams may be different or the same. The configuration information included in the SUL configuration information may be combined with the configuration example of Example 3. The SUL configuration information may include a matching relationship between at least one SUL and SDL and at least one SDL measurement configuration information. The SUL and SDL in the SUL configuration information are provided by the second network device (network device 12, or network device 13, or network device 14).

[0310] The process of the first network device sending SIB using different NDL beams can be combined with the examples of Example 1 and Example 2.

[0311] In one example, the first network device uses different NDL beams to send SIBs, and the SUL configuration information in each SIB may include a SUL, an SDL, and SDL measurement configuration information. The SUL configuration information configured in the SIB of each NDL beam is different, that is, the SUL and SDL included in the SUL configuration information configured in each SIB are different.

[0312] In another example, the first network device uses different NDL beams to send SIBs, and the SUL configuration information in each SIB may include a matching relationship between multiple SULs and multiple SDLs, SDL measurement configuration information, and the SUL configuration information in each SIB may also include a validity identifier and / or priority information of each SUL. In this example, the SUL configuration information in different NDL beams may be different. The SUL configuration information in different NDL beams configures different SULs and SDLs, or the configured SUL and SDL are the same, but the validity identifier and / or priority information are different.

[0313] In another example, the first network device uses different NDL beams to send SIBs, and the SUL configuration information in each SIB may include a matching relationship between multiple SULs and multiple SDLs, and SDL measurement configuration information. The SUL configuration information in different NDL beams may be the same or different. In this example, the NDL beam sent by the first network device may also include an SSB and an index SSBindex of the SSB. The SSBindex included in different NDL beams is different, and the SSBindex may also indicate the SUL used to initiate access. In this example, the SUL configuration information may also include a validity identifier and / or priority information for each SUL.

[0314] The above are some examples of using different NDL beams to send SIB configuration SUL in this embodiment, and the present application is not limited thereto. The random access method of this embodiment is described below by taking the example that the SUL configuration information in each SIB may include a SUL, an SDL, and SDL measurement configuration information.

[0315] Example 1

[0316] Figure 5A A schematic diagram showing an application scenario according to an embodiment of the present application is shown in FIG. Figure 5A As shown in Table 4.1, the SUL configuration information in the SIB sent by the first network device 11 through beam1 includes: the SUL identifier SUL config1 of SUL-1 and SDL1 (SDL config1) matching SUL-1, the SUL configuration information in the SIB sent through beam2 includes: the SUL identifier SUL config2 of SUL-2 and SDL2 (SDL config 2) matching SUL-2, and the SUL configuration information in the SIB sent through beam3 includes: the SUL identifier SUL config3 of SUL-3 and SDL3 (SDL config 3) matching SUL-3. In other words, the network device 11 uses different NDL beams to send SIBs with different configurations. The SUL configuration information of each SIB can also include SDL measurement configuration information, which is not shown in Table 4.1.

[0317] Table 4.1

[0318]

[0319] After receiving the SIB, the UE can measure the reference signal strength of the SDL according to the SDL measurement configuration information. The UE can also measure the reference signal strength of the NDL and select the UL for random access based on the measured reference signal strength of the SDL and the reference signal strength of the NDL. The specific cases can be divided into the following:

[0320] 1. The UE only measures the reference signal strength of the SDL corresponding to one NDL beam. The UE can compare the reference signal strength of the SDL with the reference signal strength of the NDL, and select the UL corresponding to the DL with the larger reference signal strength to initiate random access. For example, if the reference signal strength of the SDL is less than the reference signal strength of the NDL, the UE can initiate access from the NUL. If the reference signal strength of the SDL is greater than the reference signal strength of the NDL, the UE can initiate access from the SUL corresponding to the SDL.

[0321] like Figure 5A As shown, UE1 receives beam1, UE1 measures the reference signal strength of NDL in the area where it is located, and measures the reference signal strength of SDL according to the SDL measurement configuration information. If UE1 only measures the reference signal strength of SDL1 within the coverage of beam1, UE1 can compare the reference signal strength of SDL1 with the reference signal strength of NDL. If the reference signal strength of SDL1 is less than the reference signal strength of NDL, UE1 can initiate access from NUL. If the reference signal strength of SDL1 is greater than the reference signal strength of NDL, UE1 can initiate access from SUL-1 corresponding to SDL1.

[0322] 2. The UE measures the reference signal strength of the SDL corresponding to multiple NDL beams. Since the UE may be located where the coverage of multiple NDL beams overlap, the UE may measure the reference signal strength of the SDL corresponding to multiple NDL beams. The UE can compare the reference signal strengths of multiple SDLs with the reference signal strength of NDL, and select the UL corresponding to the DL with the largest reference signal strength to initiate random access. If the reference signal strengths of multiple SDLs are all smaller than the reference signal strength of NDL, the UE can initiate random access from the NUL. If there is an SDL among multiple SDLs whose reference signal strength is greater than the reference signal strength of NDL, the UE can select the SUL corresponding to the SDL with the largest reference signal strength from the SDLs whose reference signal strength is greater than the reference signal strength of NDL to initiate random access.

[0323] like Figure 5AAs shown, UE1 within the coverage of beams beam1 and beam2 measures the reference signal strength of NDL in the area where it is located, and measures the reference signal strength of SDL according to the SDL measurement configuration information. Since UE1 is within the coverage of beams beam1 and beam2, it is possible for UE1 to measure the reference signal strength of SDL1 and the reference signal strength of SDL2. If UE1 measures the reference signal strength of SDL1 and the reference signal strength of SDL2, UE1 can compare the reference signal strength of SDL1, the reference signal strength of SDL2, and the reference signal strength of NDL, and select the UL corresponding to the DL with the largest reference signal strength to initiate random access. Figure 5A As shown, UE1 is at the inner edge of the curve NDL, not within the coverage of the curve NUL, and is relatively far from the first network device 11, so the reference signal strength of NDL measured by UE1 may be relatively small; similarly, although UE1 is within the coverage of the curve SDL2, it is located near the inner edge and is relatively far from the second network device 14, so the reference signal strength of SDL2 measured by UE1 may be relatively small; UE1 is relatively close to the second network device 12 and is within the coverage of the curve SDL1, so the reference signal strength of SDL1 measured by UE1 may be relatively large. Therefore, UE1 can select SUL-1 corresponding to SDL1 to initiate random access.

[0324] 3. If the UE does not measure the reference signal strength of the SDL corresponding to the NDL beam in any direction, the UE may not initiate random access from the SUL. If the UE measures the reference signal of the NDL, the UE may initiate random access from the NUL. If the UE does not measure the reference signal strength of the SLD or the NDL, the UE may not initiate random access.

[0325] Example 2

[0326] Compared with Example 1, the SUL configuration information of each SIB in Example 2 may also include an NDL threshold NDL-RSRP. Figure 5B A schematic diagram showing an application scenario according to an embodiment of the present application is shown in FIG. Figure 5B As shown, except for Figure 5A Other than the same configuration, Figure 5B The NDL threshold NDL-RSRP (ref) is also configured. When the reference signal strength of NDL is less than the NDL threshold, the UE can select SUL to initiate random access based on the reference signal strength of SDL. When the reference signal strength of NDL is not less than the NDL threshold, the UE can determine that the distance to the first network device is relatively close, and the NUL provided by the first network device can meet the demand, and random access can be initiated from NUL.

[0327] like Figure 5B As shown in Table 4.2, the SUL configuration information in the SIB sent by the first network device 11 through beam1 includes: the SUL identifier SUL config1 of SUL-1, SDL1 (SDL config1) matched by SUL-1, and the NDL threshold rsrp-ThresholdSSB-SUL1, the SUL configuration information in the SIB sent through beam2 includes: the SUL identifier SULconfig2 of SUL-2, SDL2 (SDL config 2) matched by SUL-2, and the NDL threshold rsrp-ThresholdSSB-SUL2, and the SUL configuration information in the SIB sent through beam3 includes: the SUL identifier SUL config3 of SUL-3, SDL3 (SDL config 3) matched by SUL-3, and the NDL threshold rsrp-ThresholdSSB-SUL3. In other words, the network device 11 uses different NDL beams to send SIBs with different configurations. The SUL configuration information of each SIB may also include SDL measurement configuration information, which is not shown in Table 4.2.

[0328] Table 4.2

[0329]

[0330] It should be noted that the NDL thresholds in the SUL configuration information of each SIB may be the same or different. Schematic diagrams of the same and different NDL thresholds in the SUL configuration information of each SIB can be respectively referred to Figure 3A and Figure 3B . Figure 5B Shown is an example in which the NDL threshold in the SUL configuration information of each SIB is the same.

[0331] After receiving the SIB, the UE can measure the reference signal strength of the SDL according to the SDL measurement configuration information. The UE can also measure the reference signal strength of the NDL and select the UL for random access based on the measured reference signal strength of the SDL and NDL combined with the NDL threshold. The specific cases can be divided into the following different situations:

[0332] 1. The UE only measures the reference signal strength of the SDL corresponding to one NDL beam. The UE can compare the relationship between the reference signal strength of the NDL and the NDL threshold. If the reference signal strength of the NDL is less than the NDL threshold, the UE can initiate random access from the SUL corresponding to the SDL where the reference signal strength is measured; if the reference signal strength of the NDL is not less than the NDL threshold, the UE can initiate random access from the NUL.

[0333] For example, if Figure 5BAs shown, taking UE1 as an example, UE1 receives beam1, and UE1 measures the reference signal strength of SDL according to the SDL measurement configuration information, and measures the reference signal strength of NDL in the area. If UE1 only measures the reference signal strength of SDL1 within the coverage of beam1, UE1 compares the relationship between the reference signal strength of NDL and the NDL threshold. If the reference signal strength of NDL is less than the NDL threshold, UE1 can initiate random access from SUL-1 corresponding to the SD1L with the measured reference signal strength; if the reference signal strength of NDL is not less than the NDL threshold, UE1 can initiate random access from NUL.

[0334] 2. The UE measures the reference signal strength of the SDL corresponding to multiple NDL beams. Since the UE may be located in a place where the coverage of multiple NDL beams overlap, the UE may measure the reference signal strength of the SDL corresponding to multiple NDL beams. The UE can compare the relationship between the reference signal strength of the NDL and the NDL threshold. For the case where the NDL threshold configured in the SUL configuration information of each SIB is the same, the UE can compare the reference signal strength of the NDL with the same NDL threshold. For the case where the NDL threshold configured in the SUL configuration information of multiple SIBs is different, the UE can compare the reference signal of the NDL with the NDL threshold configured by the SIB carried by the NDL beam. If the reference signal strength of the NDL is less than the NDL threshold, the UE can initiate random access from the SUL corresponding to the SDL with the largest reference signal among the SDLs whose reference signal strength is measured; if the reference signal strength of the NDL is not less than the NDL threshold, the UE can initiate random access from the NUL.

[0335] For example, if Figure 5BAs shown, taking UE1 as an example, UE1 receives beam1, and UE1 measures the reference signal strength of SDL according to the SDL measurement configuration information, and measures the reference signal strength of NDL in the area. UE1 measures the reference signal strength of SDL corresponding to multiple NDL beams. For example, UE1 measures the reference signal strength of SDL1 and the reference signal strength of SDL2. UE1 compares the reference signal strength of NDL with the NDL threshold. If the reference signal strength of NDL is less than the NDL threshold, UE1 can determine the SDL corresponding to the largest reference signal strength from the measured reference signal strengths of multiple SDLs, and initiate random access from the SUL corresponding to the SDL with the largest reference signal strength. In this example, UE1 is at the inner edge of the curve NDL, not within the coverage of the curve NUL, and is relatively far from the first network device 11, so the reference signal strength of NDL measured by UE1 may be relatively small, less than the NDL threshold; similarly, although UE1 is within the coverage of the curve SDL2, it is located near the inner edge and is relatively far from the second network device 14, so the reference signal strength of SDL2 measured by UE1 may be relatively small; UE1 is relatively close to the second network device 12 and is within the coverage of the curve SDL1, so the reference signal strength of SDL1 measured by UE1 may be relatively large. Therefore, UE1 can select SUL-1 corresponding to SDL1 to initiate random access.

[0336] 3. If the UE does not measure the reference signal strength of the SDL corresponding to the NDL beam in any direction, the UE may not initiate random access from the SUL. If the UE measures the reference signal of the NDL, the UE may initiate random access from the NUL. If the UE does not measure the reference signal strength of the SLD or the NDL, the UE may not initiate random access.

[0337] Example 3

[0338] Compared with Example 1, the SUL configuration information of each SIB in Example 3 may also include an SDL threshold. As shown in Table 4.3, the SUL configuration information in each beam sent by the network device includes not only SUL and SUL corresponding to SUL, but also SDL threshold corresponding to SDL.

[0339] Table 4.3

[0340]

[0341] Figure 5C A schematic diagram showing an application scenario according to an embodiment of the present application is shown. Figure 5C As shown, except for Figure 5A Other than the same configuration, Figure 5CThe SDL thresholds corresponding to multiple SDLs are also configured. Figure 5C Only the threshold SDL1-RSRP(ref) of SDL1 and the threshold SDL3-RSRP(ref) of SDL3 are drawn. Figure 5C In the application scenario shown, after measuring the reference signal strength of the SDL, the UE can select a SUL with available service according to the relationship between the reference signal strength of the SDL and the SDL threshold.

[0342] Specifically, the UE receives the SIB, measures the reference signal strength of the SDL according to the SDL measurement configuration information, and after measuring the reference signal strength of the NDL, it can select uplink resources to initiate random access in the following situations in combination with the SDL threshold.

[0343] 1. The UE only measures the reference signal strength of the SDL corresponding to one NDL beam. The UE can compare the reference signal strength of the SDL with the corresponding SDL threshold. If the reference signal strength of the SDL is greater than the corresponding SDL threshold, the UE can determine that the SUL matching the SDL is service available. If the reference signal strength of the SDL is not greater than the corresponding SDL threshold, the UE can determine that the SUL matching the SDL is unavailable. At this time, the UE may not initiate random access from the SUL. The UE can compare the reference signal strength of the SDL matching the service available SUL and the reference signal strength of the NDL, and select the UL corresponding to the DL with the larger reference signal strength to initiate random access. For example, for the SDL matching the service available SUL, if the reference signal strength of the SDL is less than the reference signal strength of the NDL, the UE can initiate access from the NUL. If the reference signal strength of the SDL is greater than the reference signal strength of the NDL, the UE can initiate access from the SUL corresponding to the SDL.

[0344] like Figure 5CAs shown, taking UE1 as an example, UE1 receives beam1, UE1 measures the reference signal strength of NDL in the area where it is located, and measures the reference signal strength of SDL according to the SDL measurement configuration information. If UE1 only measures the reference signal strength of SDL1 within the coverage of beam1, UE1 can compare the reference signal strength of SDL1 with the SDL threshold SDL1-RSRP(ref) of SDL1. UE1 is within the coverage of curve SDL1-RSRP(ref), the reference signal strength of SDL1 is less than SDL1-RSRP(ref), and the SUL-1 service matched by SDL1 is available. UE1 can compare the reference signal strength of SDL1 with the reference signal strength of NDL. If the reference signal strength of SDL1 is less than the reference signal strength of NDL, UE1 can initiate access from NUL. If the reference signal strength of SDL1 is greater than the reference signal strength of NDL, UE1 can initiate access from SUL-1 corresponding to SDL1.

[0345] 2. The UE measures the reference signal strength of the SDL corresponding to multiple NDL beams. Since the UE may be located where the coverage of multiple NDL beams overlap, the UE may measure the reference signal strength of the SDL corresponding to multiple NDL beams.

[0346] The UE may compare the reference signal strengths of the multiple SDLs with the SDL threshold corresponding to each SDL respectively. The UE may determine whether the SUL service matching the SDL is available according to the relationship between the reference signal of each SDL and the corresponding SDL threshold.

[0347] For the SDL matched by the service-available SUL, the UE may compare the reference signal strength of the SDL with the reference signal strength of the NDL, and select the UL corresponding to the DL with the largest reference signal strength to initiate random access. If the reference signal strengths of the SDLs matched by the service-available SUL are all smaller than the reference signal strength of the NDL, the UE may initiate random access from the NUL. If there is an SDL whose reference signal strength is greater than the reference signal strength of the NDL among the SDLs matched by the service-available SUL, assuming that the reference signal strength is greater than the reference signal strength of the NDL, and the SDL available for the matching SUL service is the first SDL, the UE may select the SUL corresponding to the second SDL with the largest reference signal strength from the first SDL whose reference signal strength is greater than the reference signal strength of the NDL to initiate random access.

[0348] like Figure 5CAs shown, still taking UE1 as an example, UE1 is near the second network device 12, UE1 measures the reference signal strength of NDL in the area where it is located, and measures the reference signal strength of SDL according to the SDL measurement configuration information. Since UE1 is near the intersection of curve SDL2 and curve SDL3 and is located within the coverage range of curve SDL1, UE1 may measure the reference signal strength of SDL1, the reference signal strength of SDL2, and the reference signal strength of SDL3. If the reference signal strength of SDL1, the reference signal strength of SDL2, and the reference signal strength of SDL3 are measured, UE1 can compare the reference signal strength of SDL1 with the SDL threshold SDL1-RSRP(ref), compare the reference signal strength of SDL2 with the SDL threshold SDL2-RSRP(ref), and compare the reference signal strength of SDL3 with the SDL threshold SDL3-RSRP(ref), respectively, and according to Figure 5C As shown, only the reference signal strength of SDL1 may be greater than the SDL threshold SDL1-RSRP(ref), and SUL-1 matched with SDL1 is available for service.

[0349] UE1 can compare the reference signal strength of SDL1 with the reference signal strength of NDL, and select the UL corresponding to the DL with the largest reference signal strength to initiate random access. Figure 5C As shown, UE1 is at the inner edge of the curve NDL, not within the coverage of the curve NUL, and is relatively far from the first network device 11, so the reference signal strength of NDL measured by UE1 may be relatively small; UE1 is relatively close to the second network device 12, and is within the coverage of the curve SDL1, so the reference signal strength of SDL1 measured by UE1 may be relatively large. Therefore, UE1 can select SUL-1 corresponding to SDL1 to initiate random access.

[0350] 3. The UE does not measure the reference signal strength of the SDL corresponding to the NDL beam in any direction, or the reference signal strength of the SDL measured by the UE is less than the corresponding SDL threshold, and there is no SUL with available service. The UE may not initiate random access from the SUL. At this time, if the UE measures the reference signal of the NDL, the UE may initiate random access from the NUL. If the UE does not measure the reference signal strength of the NDL, the UE may not initiate random access.

[0351] Example 4

[0352] Compared with Example 1, the SUL configuration information of each SIB in Example 4 may also include an SDL threshold and an NDL threshold. As shown in Table 4.4, the SUL configuration information in each beam sent by the network device includes not only the SUL and the SUL corresponding to the SUL, but also the NDL threshold and the SDL threshold corresponding to the SDL.

[0353] Table 4.4

[0354]

[0355] Figure 5D A schematic diagram showing an application scenario according to an embodiment of the present application is shown. Figure 5D In the application scenario shown, after measuring the reference signal strength of SDL and the reference signal strength of NDL, the UE can select uplink resources based on the combination of the SDL threshold and the NDL threshold.

[0356] Specifically, the UE receives the SIB through the NDL beam, measures the reference signal strength of the SDL according to the SDL measurement configuration information, and measures the reference signal strength of the NDL. The SUL available for service is selected based on the reference signal strength of the SDL and the corresponding SDL threshold, and then the uplink resource is selected from the SUL or NUL available for service based on the relationship between the reference signal strength of the NDL and the NDL threshold. Specifically, it can be divided into the following situations.

[0357] 1. The UE only measures the reference signal strength of the SDL corresponding to one NDL beam. The UE can compare the reference signal strength of the SDL with the corresponding SDL threshold. If the reference signal strength of the SDL is greater than the corresponding SDL threshold, the UE can determine that the SUL matching the SDL is available for service. If the reference signal strength of the SDL is not greater than the corresponding SDL threshold, the UE can determine that the SUL matching the SDL is unavailable for service. At this time, the UE may not initiate random access from the SUL.

[0358] The UE can also compare the relationship between the reference signal strength of the NDL and the NDL threshold. When the reference signal strength of the NDL is less than the NDL threshold, the UE can select the SUL corresponding to the SDL with the highest reference signal strength from the matching SDLs of the available SULs to initiate random access. When the reference signal strength of the NDL is less than the NDL threshold, if only the reference signal strength of one SDL is measured and the SUL service corresponding to the SDL is available, the UE can initiate random access from the SUL matching the one SDL.

[0359] For example, if Figure 5DAs shown, taking UE1 as an example, UE1 receives beam1, UE1 measures the reference signal strength of NDL in the area where it is located, and measures the reference signal strength of SDL according to the SDL measurement configuration information. If UE1 only measures the reference signal strength of SDL1 within the coverage of beam1, UE1 can compare the reference signal strength of SDL1 with the SDL threshold SDL1-RSRP(ref) of SDL1. UE1 is within the coverage of curve SDL1-RSRP(ref), the reference signal strength of SDL1 is less than SDL1-RSRP(ref), and the SUL-1 service matched by SDL1 is available. UE1 can compare the reference signal strength of NDL with the NDL threshold. If the reference signal strength of NDL is not less than the NDL threshold, UE1 can initiate access from NUL. If the reference signal strength of NDL is less than the NDL threshold, UE1 can initiate access from SUL-1 corresponding to SDL1.

[0360] 2. The UE measures the reference signal strength of the SDL corresponding to multiple NDL beams. Since the UE may be located where the coverage of multiple NDL beams overlap, the UE may measure the reference signal strength of the SDL corresponding to multiple NDL beams.

[0361] The UE may compare the reference signal strengths of the multiple SDLs with the SDL threshold corresponding to each SDL respectively. The UE may determine whether the SUL service matching the SDL is available according to the relationship between the reference signal of each SDL and the corresponding SDL threshold.

[0362] The UE can also compare the relationship between the reference signal strength of the NDL and the NDL threshold. When the reference signal strength of the NDL is less than the NDL threshold, the UE can select the SUL corresponding to the SDL with the highest reference signal strength from the matching SDLs of the available SULs to initiate random access. When the reference signal strength of the NDL is not less than the NDL threshold, the UE can initiate random access from the NUL.

[0363] For example, if Figure 5D As shown, taking UE1 as an example, UE1 detects that the reference signal strength of SDL1 is SDL1-RSRP, the reference signal strength of SDL2 is SDL2-RSRP, the reference signal strength of SDL3 is SDL3-RSRP, and UE1 also detects that the reference signal strength of NDL is NDL-RSRP. If UE1 compares the reference signal strength of SDL and the corresponding SDL threshold and determines that SDL1-RSRP is greater than SDL1-RSRP (ref), SDL2-RSRP is greater than SDL2-RSRP (ref), but SDL3-RSRP is less than SDL3-RSRP (ref), UE1 can determine that the services of SUL-1 corresponding to SDL1 and SUL-2 corresponding to SDL2 are available.

[0364] The UE may compare NDL-RSRP with NDL-RSRP(ref), and the result of the comparison may be that NDL-RSRP is less than NDL-RSRP(ref). Figure 5D In the example, UE1 is not within the coverage of NUL. In this case, UE1 does not initiate random access from NUL. UE1 can select SUL from available SUL-1 and SUL-2 to initiate random access. Specifically, UE1 can compare SDL1-RSRP and SDL2-RSRP, and select SUL corresponding to SDL with the largest reference signal strength to initiate random access. Figure 4D In the example, UE1 is relatively close to the second network device 12, and the measured SDL1-RSRP may be greater than SDL2-RSRP. UE1 may select SUL-1 to initiate random access.

[0365] 3. The UE does not measure the reference signal strength of the SDL corresponding to the NDL beam in any direction, or the reference signal strength of the SDL measured by the UE is less than the corresponding SDL threshold, and there is no SUL with available service. The UE may not initiate random access from the SUL. At this time, if the UE measures the reference signal of the NDL, the UE may initiate random access from the NUL. If the UE does not measure the reference signal strength of the NDL, the UE may not initiate random access.

[0366] It should be noted that, in this embodiment, the SUL configuration information may also include a parameter or a combination of multiple parameters of the SUL validity identifier, priority information, and SSB information.

[0367] After receiving the SUL configuration information, the UE may also select SUL to initiate random access based on the solution of this embodiment in combination with a parameter or a combination of multiple parameters in the SUL validity identifier, priority information, and SSB information. The combination method can refer to the relevant content of the first embodiment of this application, which will not be repeated here.

[0368] The random access method of this embodiment is described below by taking the example that the SUL configuration information in each SIB may include the matching relationship between multiple SULs and multiple SDLs, and SDL measurement configuration information, and the SUL configuration information in each SIB may also include the validity identifier and / or priority information of each SUL.

[0369] Example 5

[0370] Still Figure 5A The example shown is a schematic diagram of the application scenario of this example. Figure 5AAs shown in Table 4.5, the SUL configuration information in the SIB sent by the first network device 11 through beam1 includes: the SUL identifier SUL config1 of SUL-1 and the SDL1 (SDL config1) matching SUL-1, and the validity identifier available of SUL config1, the SUL identifier SUL config2 of SUL-2 and the SDL2 (SDL config 2) matching SUL-2, and the validity identifier available of SUL config2, the SUL identifier SUL config3 of SUL-3 and the SDL3 (SDL config 3) matching SUL-3, and the validity identifier disvailable of SUL config3.

[0371] Table 4.5

[0372]

[0373] The SUL configuration information in the SIB sent by the first network device 11 through beam2 includes: the SUL identifier SULconfig1 of SUL-1 and the SDL1 (SDL config1) matching SUL-1, and the validity identifier of SUL config1 disabled, the SUL identifier SUL config2 of SUL-2 and the SDL2 (SDL config 2) matching SUL-2, and the validity identifier of SUL config2 available, the SUL identifier SUL config3 of SUL-3 and the SDL3 (SDL config 3) matching SUL-3, and the validity identifier of SULconfig3 disabled.

[0374] The SUL configuration information in the SIB sent by the first network device 11 through beam3 includes: the SUL identifier SULconfig1 of SUL-1 and the SDL1 (SDL config1) matching SUL-1, and the validity identifier of SUL config1 disabled, the SUL identifier SUL config2 of SUL-2 and the SDL2 (SDL config 2) matching SUL-2, and the validity identifier of SUL config2 disabled, the SUL identifier SUL config3 of SUL-3 and the SDL3 (SDL config 3) matching SUL-3, and the validity identifier of SULconfig3 available.

[0375] That is, the network device 11 uses different NDL beams to send SIBs with different configurations. The SUL configuration information of each SIB may also include SDL measurement configuration information, which is not shown in Table 4.5.

[0376] In this example, after receiving the SIB, the UE measures the reference signal strength of the SDL according to the SDL measurement configuration information, and can determine the valid SUL according to the validity identifier of the SUL. The UE can also measure the reference signal strength of the NDL, and select the UL for random access according to the reference signal strength of the SDL corresponding to the valid SUL and the reference signal strength of the NDL. For example, the UE can select the UL corresponding to the DL with the largest reference signal strength from the reference signal strength of the SDL corresponding to the valid SUL and the reference signal strength of the NDL to initiate random access. If the reference signal strength of the NDL is greater than the reference signal strength of the SDL corresponding to all valid SULs, the UE can initiate random access from the NUL. If there is a valid SUL corresponding to the SDL with a reference signal strength greater than the reference signal strength of the NDL (the first SDL), the UE can select the SUL corresponding to the second SDL with the largest reference signal strength from the first SDL to initiate random access.

[0377] For example, if Figure 5A As shown, UE1 within the coverage of beams beam1 and beam2 measures the reference signal strength of NDL in the area where it is located. UE1 receives the SUL configuration information sent by beam1, and measures the reference signal strength of SDL1, SDL2, and SDL3 according to the SDL measurement configuration information. UE1 determines that the valid SULs are SUL-1 and SUL-2 according to the SUL configuration information. Therefore, UE1 can compare the reference signal strength of SDL1, SDL2, and NDL, and select the UL corresponding to the DL with the largest reference signal strength to initiate random access. Figure 5A As shown, UE1 is at the inner edge of the curve NDL, not within the coverage of the curve NUL, and is relatively far from the first network device 11, so the reference signal strength of NDL measured by UE1 may be relatively small; similarly, although UE1 is within the coverage of the curve SDL2, it is located near the inner edge and is relatively far from the second network device 14, so the reference signal strength of SDL2 measured by UE1 may be relatively small; UE1 is relatively close to the second network device 12 and is within the coverage of the curve SDL1, so the reference signal strength of SDL1 measured by UE1 may be relatively large. Therefore, UE1 can select SUL-1 corresponding to SDL1 to initiate random access.

[0378] Example 6

[0379] Still Figure 5A The example shown is a schematic diagram of the application scenario of this example. Figure 5A As shown in Table 4.6, the SUL configuration information in the SIB sent by the first network device 11 through beam1 includes: the SUL identifier SUL config1 of SUL-1 and the SDL1 (SDL config1) matching SUL-1, and the priority information of SUL config1 is 1, the SUL identifier SULconfig2 of SUL-2 and the SDL2 (SDL config 2) matching SUL-2, and the priority information of SUL config2 is 2, the SUL identifier SUL config3 of SUL-3 and the SDL3 (SDL config 3) matching SUL-3, and the priority information of SUL config3 is 3.

[0380] Table 4.6

[0381]

[0382] The SUL configuration information in the SIB sent by the first network device 11 through beam2 includes: the SUL identifier SULconfig1 of SUL-1 and the SDL1 (SDL config1) matching SUL-1, and the priority information of SUL config1 is 2, the SUL identifier SUL config2 of SUL-2 and the SDL2 (SDL config 2) matching SUL-2, and the priority information of SUL config2 is 1, the SUL identifier SUL config3 of SUL-3 and the SDL3 (SDL config 3) matching SUL-3, and the priority information of SUL config3 is 3.

[0383] The SUL configuration information in the SIB sent by the first network device 11 through beam3 includes: the SUL identifier SULconfig1 of SUL-1 and the SDL1 (SDL config1) matching SUL-1, and the priority information of SUL config1 is 3, the SUL identifier SUL config2 of SUL-2 and the SDL2 (SDL config 2) matching SUL-2, and the priority information of SUL config2 is 2, the SUL identifier SUL config3 of SUL-3 and the SDL3 (SDL config 3) matching SUL-3, and the priority information of SUL config3 is 1.

[0384] That is, the network device 11 uses different NDL beams to send SIBs with different configurations. The SUL configuration information of each SIB may also include SDL measurement configuration information, which is not shown in Table 4.6.

[0385] In this example, after receiving the SIB, the UE measures the reference signal strength of the SDL according to the SDL measurement configuration information, and can determine the SUL with the highest priority according to the priority information of the SUL. The UE can also measure the reference signal strength of the NDL, and select the UL for random access according to the reference signal strength of the SDL and the reference signal strength of the NDL corresponding to the SUL with the highest priority. Or the UE can determine multiple SULs with higher priorities according to the priority information of the SUL, and select the UL for random access according to the reference signal strength of the SDL and the reference signal strength of the NDL corresponding to the multiple SULs with higher priorities.

[0386] For example, if Figure 5A As shown, UE1 within the coverage of beams beam1 and beam2 measures the reference signal strength of NDL in the area where it is located. UE1 receives the SUL configuration information sent by beam1, and measures the reference signal strength of SDL1, SDL2, and SDL3 according to the SDL measurement configuration information. UE1 determines that the SUL with the highest priority is SUL-1 according to the SUL configuration information. Therefore, UE1 can compare the reference signal strength of SDL1 with the reference signal strength of NDL, and select the UL corresponding to the DL with the largest reference signal strength to initiate random access. Figure 5A As shown, UE1 is at the inner edge of the curve NDL, not within the coverage of the curve NUL, and is relatively far from the first network device 11, so the reference signal strength of NDL measured by UE1 may be relatively small; UE1 is relatively close to the second network device 12, and is within the coverage of the curve SDL1, so the reference signal strength of SDL1 measured by UE1 may be relatively large. Therefore, UE1 can select SUL-1 corresponding to SDL1 to initiate random access.

[0387] Example 7

[0388] In addition to the matching relationship between multiple SULs and multiple SDLs, SDL measurement configuration information, the validity identification and / or priority information of each SUL, the SUL configuration information in each SIB may also include an NDL threshold NDL-RSRP and / or SDL thresholds corresponding to multiple SDLs.

[0389] In this example, after receiving the SUL configuration information, the UE can select a SUL from multiple SULs to initiate random access based on the validity identification and / or priority information of each SUL, the NDL threshold NDL-RSRP, and the SDL thresholds corresponding to multiple SDLs.

[0390] Table 4.7

[0391]

[0392]

[0393] Combination Figure 5C and Table 4.7 illustrate this example, except for Figure 5A Other than the same configuration, Figure 5C The SDL thresholds corresponding to multiple SDLs are also configured. Figure 5C Only the threshold SDL1-RSRP(ref) of SDL1 and the threshold SDL3-RSRP(ref) of SDL3 are shown in Table 4.7. The validity flag is configured for each SUL. Figure 5C In the application scenario shown, after receiving the SIB, the UE measures the reference signal strength of the SDL according to the SDL measurement configuration information, and can determine the valid SUL according to the validity identifier of the SUL, and select the SUL with available service from the valid SUL based on the relationship between the reference signal strength of the SDL corresponding to the valid SUL and the SDL threshold.

[0394] Then, according to the reference signal strength of the SDL corresponding to the SUL where the service is available and the reference signal strength of the NDL, the UL corresponding to the DL with a larger reference signal strength is selected to initiate random access. For example, for the SDL matching the SUL where the service is available, if the reference signal strength of the SDL is less than the reference signal strength of the NDL, the UE can initiate access from the NUL; if the reference signal strength of the SDL is greater than the reference signal strength of the NDL, the UE can initiate access from the SUL corresponding to the SDL. For the specific process, please refer to the introduction of Example 3 of this embodiment, which will not be repeated here.

[0395] Table 4.8

[0396]

[0397] Combination Figure 5B and Table 4.8 illustrate this example, except for Figure 5A Other than the same configuration, Figure 5C An NDL threshold is also configured in the SUL configuration information of each SIB. It should be noted that the NDL threshold in the SUL configuration information of each SIB can be the same or different. The schematic diagrams of the same and different NDL thresholds in the SUL configuration information of each SIB can be respectively referred to Figure 3A and Figure 3B . Figure 5B The example shown is that the NDL threshold in the SUL configuration information of each SIB is the same. In the example of Table 4.8, the validity flag of each SUL is configured.

[0398] In this example, after receiving the SIB, the UE can measure the reference signal strength of the SDL according to the SDL measurement configuration information. The UE can also measure the reference signal strength of the NDL. The UE can determine the valid SUL according to the validity identifier of the SUL. The UE can compare the relationship between the reference signal strength of the NDL and the NDL threshold. If the reference signal strength of the NDL is less than the NDL threshold, the UE can select the SUL corresponding to the SDL with the largest reference signal strength from the SDL corresponding to the valid SUL to initiate random access; if the reference signal strength of the NDL is not less than the NDL threshold, the UE can initiate random access from the NUL.

[0399] For example, if Figure 5B As described, taking UE1 as an example, UE1 receives beam1, and UE1 measures the reference signal strength of SDL according to the SDL measurement configuration information, and measures the reference signal strength of NDL in the area. UE1 measures the reference signal strength of SDL1, the reference signal strength of SDL2, and the reference signal strength of SDL3. UE can determine that the valid SULs are SUL-1 and SUL-2 according to the validity identifier of SUL. UE1 compares the reference signal strength of NDL with the NDL threshold. If the reference signal strength of NDL is less than the NDL threshold, UE1 can determine the SDL corresponding to the largest reference signal strength from SDL1 corresponding to SUL-1 and SDL2 corresponding to SUL-2SDL, and initiate random access from the SUL corresponding to the SDL with the largest reference signal strength.

[0400] In this example, UE1 is at the inner edge of the curve NDL, not within the coverage of the curve NUL, and is relatively far from the first network device 11, so the reference signal strength of NDL measured by UE1 may be relatively small, less than the NDL threshold; similarly, although UE1 is within the coverage of the curve SDL2, it is located near the inner edge and is relatively far from the second network device 14, so the reference signal strength of SDL2 measured by UE1 may be relatively small; UE1 is relatively close to the second network device 12 and is within the coverage of the curve SDL1, so the reference signal strength of SDL1 measured by UE1 may be relatively large. Therefore, UE1 can select SUL-1 corresponding to SDL1 to initiate random access.

[0401] Table 4.9

[0402]

[0403]

[0404] Combination Figure 5C and Table 4.9 illustrate this example, except for Figure 5A Other than the same configuration, Figure 5CThe SDL thresholds corresponding to multiple SDLs are also configured. Figure 5C Only the threshold SDL1-RSRP(ref) of SDL1 and the threshold SDL3-RSRP(ref) of SDL3 are shown in Table 4.9. The priority information is configured for each SUL. Figure 5C In the application scenario shown, combined with the configuration of Table 4.9, after receiving the SIB, the UE measures the reference signal strength of the SDL according to the SDL measurement configuration information. The UE can select the SUL with available service from the SUL with the corresponding SDL reference signal strength measured according to the relationship between the reference signal strength of the SDL with the measured reference signal strength and the SDL threshold. The UE can determine the SUL with the highest priority from the SULs with available service according to the priority information of the SUL to initiate random access.

[0405] For example, if Figure 5C As shown, taking UE1 as an example, if UE1 measures the reference signal strength of SDL1, the reference signal strength of SDL2, and the reference signal strength of SDL3, UE1 can compare the reference signal strength of SDL1 with the SDL threshold SDL1-RSRP(ref), the reference signal strength of SDL2 with the SDL threshold SDL2-RSRP(ref), and the reference signal strength of SDL3 with the SDL threshold SDL3-RSRP(ref). If the reference signal strength of SDL1 is greater than the SDL threshold SDL1-RSRP(ref) and the reference signal strength of SDL2 is greater than the SDL threshold SDL2-RSRP(ref), then SUL-1 and SUL-2 services are available. According to the priority information of SUL-1 and SUL-2, SUL-1 has a higher priority, and UE1 can initiate random access from SUL-1.

[0406] Table 4.10

[0407]

[0408] Combination Figure 5B and Table 4.10 illustrate this example, except for Figure 5A Other than the same configuration, Figure 5C An NDL threshold is also configured in the SUL configuration information. It should be noted that the NDL threshold in the SUL configuration information of each SIB can be the same or different. The example in Table 4.10 configures the priority information of each SUL.

[0409] In this example, after receiving the SIB, the UE can measure the reference signal strength of the SDL according to the SDL measurement configuration information, and the UE can also measure the reference signal strength of the NDL. The UE can compare the relationship between the reference signal strength of the NDL and the NDL threshold. If the reference signal strength of the NDL is less than the NDL threshold, the UE can select the SUL with the highest priority to initiate random access according to the priority information of the SUL; if the reference signal strength of the NDL is not less than the NDL threshold, the UE can initiate random access from the NUL.

[0410] Example 8

[0411] The random access method of this embodiment is described below by taking the example that the SUL configuration information in each SIB may include the matching relationship between multiple SULs and multiple SDLs, SDL measurement configuration information, the NDL beam sent by the first network device includes SSB and the SSBindex of the SSB, and different NDL beams include different SSBindex.

[0412] Table 4.11

[0413]

[0414] like Figure 5A As shown in Table 4.11, the SUL configuration information in the SIB sent by the first network device 11 through beam1, beam2 and beam3 includes: the SUL identifier SUL config1 of SUL-1 and SDL1 (SDL config1) matching SUL-1, the SUL identifier SUL config2 of SUL-2 and SDL2 (SDL config 2) matching SUL-2, and the SUL identifier SUL config3 of SUL-3 and SDL3 (SDL config 3) matching SUL-3. The index in the SSB sent by the first network device through beam1 is SSBindex1, the index in the SSB sent through beam2 is SSBindex2, and the index in the SSB sent through beam3 is SSBindex3. The indexes in the three beams may be different.

[0415] In this example, the UE receives the SSB sent by the beam during the initial access phase and obtains the SSB index SSBindex. After receiving the SUL configuration information, the UE obtains the total number of configured SUL cells and can select the SUL to initiate random access based on the value of SSBindex and the remainder of the total number of SUL cells. For example, in this example, assuming that SSBindex1 is 1, SSBindex2 is 2, and SSBindex3 is 3, then the SUL accessed indicated by SSBindex1 is SUL-1, the SUL accessed indicated by SSBindex2 is SUL-2, and the SUL accessed indicated by SSBindex3 is SUL-3.

[0416] In this example, the SUL configuration information may also include a validity identifier and / or priority information of each SUL. If the validity identifier of each SUL is included, in the case where the SUL indicated by the SSBindex conflicts with the SUL indicated by the validity identifier, the UE may select the SUL with a valid validity identifier to initiate random access. If the priority information of each SUL is included, in the case where the priority of the SUL indicated by the SSBindex is not the highest, the UE may select the SUL indicated by the SSBindex to initiate random access.

[0417] It should be noted that the above examples of selecting SUL to initiate random access are only some examples of the present application, and the present application is not limited thereto. Users can set SUL configuration information in the manner shown in the examples of the present application according to actual needs to distinguish different SULs.

[0418] Example 5

[0419] by Figure 1B Taking the application scenario shown as an example, the second network device (network device 300) can only provide SUL services to a part of the cell of the first network device (network device 200). In this example, the first network device can use an NDL beam to send SIBs with different configurations to the UE, and the SIBs include SUL configuration information. The SIBs in different NDL beams include different SUL configuration information. The SUL configuration information may include a SUL identifier of at least one SUL and at least one SUL threshold.

[0420] In a possible implementation, in this embodiment, the SUL configuration information may also include a validity identifier of the SUL threshold. In an area without SUL coverage, the SUL threshold included in the SUL configuration information in the SIB of the NDL beam sent by the first network device may be invalid. Alternatively, the SUL thresholds configured in different SIBs are different. In an area without SUL coverage, the SUL threshold included in the SUL configuration information in the SIB of the NDL beam sent by the first network device is configured as 0. In this way, the UE can initiate random access from NUL.

[0421] Example 1

[0422] Table 5.1

[0423]

[0424] Fig. 6A A schematic diagram showing a random access scenario according to an example of the present application is shown. Fig. 6A As shown in Table 5.1, the SUL configuration information in the SIB sent by the network device 11 through beam1 includes: the SUL identifier SUL config1 of SUL-1, the SUL threshold rsrp-ThresholdSSB-SUL1 and the validity flag of the SUL threshold are valid (available); the SUL configuration information in the SIB sent through beam2 includes: the SUL identifier SUL config2 of SUL-2, the SUL threshold rsrp-ThresholdSSB-SUL2 and the validity flag of the SUL threshold are invalid (disvailable).

[0425] like Figure 6B As described above, UE1 is not within the coverage of SUL, UE1 receives beam2, and determines that the validity flag of the SUL threshold is invalid, and UE1 can initiate random access from NUL.

[0426] Example 2

[0427] Table 5.2

[0428]

[0429] The difference between Example 2 and Example 1 of this embodiment is that, in the SIB of beam2 sent by the first network device, the SUL threshold included in the SUL configuration information is 0.

[0430] Figure 6B A schematic diagram showing a random access scenario according to an example of the present application is shown. Figure 6BAs shown, in an area without SUL coverage, the SUL threshold is 0, UE1 is not within the coverage of SUL, UE1 receives beam2, UE2 measures the RSRP of NDL in the area, and determines that the SUL threshold is 0. UE1 compares the RSRP of NDL with the SUL threshold to determine that the RSRP of NDL is greater than the SUL threshold, and UE1 can initiate random access from NUL.

[0431] Figure 7 An interaction diagram of a random access method according to an embodiment of the present application is shown.

[0432] The embodiment of the present application provides a random access method, which can be applied to a first network device. Figure 7 As shown, the method may include: step S700, the first network device uses a normal downlink NDL beam to send a supplementary uplink SUL configuration information corresponding to the NDL beam, so that the UE measures the reference signal strength corresponding to the NDL beam. If the reference signal strength is less than a first SUL threshold, the UE initiates random access from the first SUL corresponding to the first SUL identifier (the specific process of the UE can be found in the introduction of steps S701-S703).

[0433] The SUL configuration information includes a SUL identifier of at least one SUL and at least one SUL threshold, and different NDL beams correspond to different SUL configuration information; wherein the at least one SUL is a SUL provided by a second network device, the SUL identifier of the at least one SUL includes a first SUL identifier, and the at least one SUL threshold includes a first SUL threshold corresponding to the first SUL identifier.

[0434] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, UEs located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam.

[0435] In one possible implementation, the first network device is a base station, or a small station, or other user equipment. For example, the first network device can be an NR base station. The first network device can send an NDL beam to the UE, and the NDL beam includes SUL configuration information corresponding to the NDL beam. The SIBs in different NDL beams include different SUL configuration information. Since the UE receives different NDL beams in different areas, the UE can distinguish the accessed SUL based on the NDL beam, as shown in Part 1 of Example 1 of the present application.

[0436] In one possible implementation, the SUL configuration information of an NDL beam may include a SUL and a SUL threshold, as shown in Example 1 of Embodiment 1.

[0437] In another possible implementation, the SUL configuration information of an NDL beam may include SUL identifiers of multiple SULs and multiple SUL thresholds, and the multiple SUL thresholds may be the same or different. The SUL configuration information also includes one or a combination of the following parameters for each SUL: a first validity identifier, priority information, such as Example 2, Example 3, and Example 4 of Example 1.

[0438] In a possible implementation, when multiple SULs are included in the SUL configuration information, the NDL beam may also include an SSBindex, and different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access. The NDL beam may include one SSBindex or multiple SSBindexes, as described in Example 1 and Example 2 of Example 2.

[0439] In a possible implementation, when multiple SULs are included in the SUL configuration information, the NDL beam may include an SSBindex, and each SUL configuration information may also include a parameter or a combination of multiple parameters in the validity identifier and priority information. That is, when the UE receives the SUL configuration information, it can select the SUL to initiate random access based on the SSBindex in the beam, the validity identifier, and a parameter or a combination of multiple parameters in the priority information. As described in Example 3 of Embodiment 2.

[0440] The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0441] In a possible implementation, the SUL configuration information also includes a second validity identifier of the SUL threshold, and the second validity identifier may be valid or invalid. In an area without SUL coverage, the SUL threshold included in the SUL configuration information in the SIB of the NDL beam sent by the first network device may be invalid, so that the UE can initiate random access from NUL. It can be used to distinguish between areas with SUL coverage and areas without SUL coverage, and solve the problem that a single RSRP threshold cannot distinguish between areas without SUL coverage, as described in Example 5.

[0442] The embodiment of the present application also provides a random access method, which can be applied to UE. Figure 7 As shown, the method may include:

[0443] Step S701, the user equipment UE receives a normal downlink NDL beam, and the NDL beam includes supplementary uplink SUL configuration information corresponding to the NDL beam.

[0444] Among them, the UE receives different NDL beams in different areas, and different NDL beams include different SUL configuration information, the SUL configuration information includes a SUL identifier of at least one SUL and at least one SUL threshold; the NDL beam is a beam sent by a first network device, and the at least one SUL is a SUL provided by a second network device; the SUL identifier of the at least one SUL includes a first SUL identifier, and the at least one SUL threshold includes a first SUL threshold corresponding to the first SUL identifier.

[0445] Step S702: The UE measures the reference signal strength corresponding to the NDL beam.

[0446] Step S703: If the reference signal strength is less than the first SUL threshold, the UE initiates random access from the first SUL corresponding to the first SUL identifier.

[0447] In one possible implementation, the SUL configuration information of an NDL beam may include a SUL and a SUL threshold, as shown in Example 1 of Embodiment 1. The NDL beams received by the UE in different areas are different, and the SUL configuration information included in different NDL beams is different. The UE selects the SUL access configured by the SUL configuration information according to the received SUL configuration information and the measured reference signal strength, which will not be repeated. In another possible implementation, the SUL configuration information of an NDL beam may include SUL identifiers of multiple SULs and multiple SUL thresholds, and the multiple SUL thresholds may be the same or different. The SUL configuration information also includes one or a combination of several parameters of each SUL: a first validity identifier, priority information, such as Example 2, Example 3 and Example 4 of Embodiment 1. The UE receives the beam and, by measuring the reference signal strength of the NDL, can select a SUL from multiple SULs to initiate random access based on the reference signal strength of the NDL, the SUL threshold, and the validity identifier and / or priority information of each SUL.

[0448] In another possible implementation, when multiple SULs are included in the SUL configuration information, the NDL beam may further include an SSBindex, and different NDL beams may include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access. The NDL beam may include one SSBindex or multiple SSBindexes, as described in Example 1 and Example 2 of Embodiment 2. Each SUL configuration information may also include a parameter or a combination of multiple parameters in the validity identifier and priority information. That is, when the UE receives the SUL configuration information, it can select the SUL to initiate random access based on the SSBindex in the beam, the validity identifier, and a parameter or a combination of multiple parameters in the priority information. As described in Example 3 of Embodiment 2.

[0449] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, UEs located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam.

[0450] Compare Figure 3A and Figure 2B The example shown, Figure 3A The user equipment in the can select the SUL cell configured with the NDL beam at the location to initiate random access according to the relationship between the measured reference signal strength and the SUL threshold, and Figure 2B In the example shown, the user equipment cannot distinguish three different SULs. Therefore, the random access method according to the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0451] In a possible implementation, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the SUL configuration information also includes a first validity identifier and / or priority information of each SUL; the first validity identifier of the SUL corresponding to the first SUL identifier is valid and / or has the highest priority. For specific implementations, see Example 2, Example 3, and Example 4 of Example 1.

[0452] In a possible implementation, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the NDL beam also includes an SSBindex. Different NDL beams received by the UE include different SSBindexes, and the SSBindex is used to indicate the first SUL. In a possible implementation, the first SUL identifier is the remainder of the value of the SSBindex and the total number of multiple SULs, or the first SUL identifier is the value of the SSBindex. For specific implementations, please refer to Example 1, Example 2, and Example 3 of Example 2. The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0453] In a possible implementation, the SUL configuration information also includes a second validity identifier of the at least one SUL threshold, and the method further includes: if the second validity identifier of the SUL threshold is invalid or the SUL threshold is 0 or a negative value, random access is initiated from NUL. For a specific implementation, please refer to Example 5. In an area without SUL coverage, the SUL threshold included in the SUL configuration information in the SIB of the NDL beam sent by the first network device may be invalid, so that the UE can initiate random access from NUL. It can be used to distinguish between areas with SUL coverage and areas without SUL coverage, and solve the problem that a single RSRP threshold cannot distinguish areas without SUL coverage.

[0454] Figure 8 An interaction diagram of a random access method according to another embodiment of the present application is shown. The present application also provides a random access method that can be applied to a first network device. Figure 8 As shown, the method may include:

[0455] Step S800, sending supplementary uplink SUL configuration information. The SUL configuration information may include: multiple SULs, multiple SDLs respectively matching the multiple SULs, and SDL measurement configuration information, so that the user equipment UE measures the reference signal strengths of the multiple SDLs according to the SDL measurement configuration information, and initiates random access from the SUL corresponding to the second SDL; wherein the second SDL is the one with the highest reference signal strength among at least one first SDL, and the at least one first SDL is selected by the UE from the multiple SDLs according to the reference strengths of the multiple SDLs.

[0456] The present application also provides a random access method which can be applied to user equipment, such as Figure 8 As shown, the method may include:

[0457] S801, a user equipment UE receives supplementary uplink SUL configuration information, where the SUL configuration information includes multiple SULs, multiple supplementary downlink SDLs respectively matching the multiple SULs, and SDL measurement configuration information;

[0458] S802, the UE measures the reference signal strengths of the multiple SDLs according to the SDL measurement configuration information;

[0459] S803: The UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, and selects a second SDL from the at least one first SDL, wherein the reference signal strength of the second SDL is the highest among the at least one first SDL;

[0460] S804: The UE initiates random access from the SUL corresponding to the second SDL.

[0461] By configuring multiple pairs of SUL and SDL (multiple pairs of SUL and SDL) and SDL measurement configuration information corresponding to SDL through the first network device, the UE can measure the reference signal strength of SDL according to the SDL measurement configuration information, and select SUL to initiate random access according to the reference signal strength of SDL, so that the UE can distinguish different SULs according to the selected strategy, which can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0462] In a possible implementation, step S800, sending SUL configuration information, may include: broadcasting the SUL configuration information omnidirectionally. Step S801, UE receiving SUL configuration information, may include: UE receiving the broadcasted SUL configuration information.

[0463] In a possible implementation, the SUL configuration information also includes NDL measurement configuration information, and the method also includes: the UE measures the reference signal strength of the normal downlink NDL; the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, including: the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs and the reference signal strength of the NDL, and the reference signal strength of the at least one first SDL is greater than the reference signal strength of the NDL. As described in Example 1 of Embodiment 3.

[0464] In this embodiment, the SUL configuration information may further include: a normal downlink NDL threshold and / or multiple SDL thresholds. After receiving the SUL configuration information, the UE measures the reference signal strengths of multiple SDLs and may select at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs and a combination of one or more of the following parameters: NDL threshold, multiple SDL thresholds.

[0465] Combined with the NDL threshold, the distance between the UE and the network device that provides NUL resources can be determined more accurately, and a more appropriate UL can be selected to initiate random access. Combined with the SDL threshold, some SULs that cannot provide services can be filtered out, and the final access SUL can be selected from the SULs that can provide services, which can improve access efficiency.

[0466] In a possible implementation, the SUL configuration information also includes an NDL threshold, and the method further includes: the UE measures the reference signal strength of the normal downlink NDL; when the reference signal strength of the NDL is less than the NDL threshold, the SDL with the measured reference signal strength is the at least one first SDL. As described in Example 2 of Embodiment 3.

[0467] In a possible implementation, the SUL configuration information also includes an NDL threshold and an SDL threshold corresponding to the SDL, and the method further includes: the UE measures the reference signal strength of the normal downlink NDL; the reference signal strength of the at least one first SDL is greater than the corresponding SDL threshold, and a second SDL is selected from the at least one first SDL, including: if the reference signal of the NDL is less than the NDL threshold, the UE selects the second SDL with the highest reference signal strength from the first SDL to initiate random access. As shown in Example 4 of Embodiment 3.

[0468] In a possible implementation, the SUL configuration information includes an SDL threshold corresponding to the SDL, and the method further includes: the UE measures the reference signal strength of the normal downlink NDL; the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, including: the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, the SDL threshold and the reference signal strength of the NDL, and the reference signal strength of the at least one first SDL is greater than the corresponding SDL threshold and greater than the reference signal strength of the NDL. As shown in Example 3 of Embodiment 3.

[0469] In a possible implementation, step S800, sending SUL configuration information, may include: using an NDL beam to send SUL configuration information corresponding to the NDL beam, the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the one SUL, and SDL measurement configuration information; different NDL beams correspond to different SUL configuration information. Step S801, UE receives SUL configuration information, may include: UE receives a normal downlink NDL beam, the NDL beam includes SUL configuration information corresponding to the NDL beam. In this embodiment, the SUL configuration information may also include NDL measurement configuration information, and the method may also include: UE measures the reference signal strength of the normal downlink NDL; UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, including: UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs and the reference signal strength of the NDL, and the reference signal strength of the at least one first SDL is greater than the reference signal strength of the NDL. For details, please refer to Example 1 of Embodiment 4.

[0470] By configuring different SUL configuration information in different NDL beams, that is, different SUL cells are configured in different NDL beams. In this way, after receiving the NDL beam, the UE located in the coverage area of ​​different NDL beams can choose to initiate random access from the SUL configured in the NDL beam. Different SULs are distinguished by different beams. The random access method provided in the embodiment of the present application can solve the technical problem that a single RSRP threshold cannot distinguish different SULs.

[0471] In a possible implementation, the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information, and the SUL configuration information corresponding to the NDL beam also includes: an NDL threshold and / or an SDL threshold. After the UE receives the NDL beam, it measures the reference signal strength of the SDL according to the SDL measurement configuration information, and the UE can also measure the reference signal strength of the NDL. The UE can select the UL for random access based on the measured reference signal strength of the SDL and the reference signal strength of the NDL, combined with an NDL threshold and / or an SDL threshold. Specifically, as shown in Example 2, Example 3 and Example 4 of Example 4.

[0472] Combined with the NDL threshold, the distance between the UE and the network device that provides NUL resources can be determined more accurately, and a more appropriate UL can be selected to initiate random access. Combined with the SDL threshold, some SULs that cannot provide services can be filtered out, and the final access SUL can be selected from the SULs that can provide services, which can improve access efficiency.

[0473] In one possible implementation, step S800, sending SUL configuration information, may include: using an NDL beam to send SUL configuration information corresponding to the NDL beam, the SUL configuration information corresponding to the NDL beam including multiple SULs, multiple SDLs respectively matching the multiple SULs, and SDL measurement configuration information; the NDL beam also includes an SSBindex, different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access; and / or, the SUL configuration information corresponding to the NDL beam also includes one or a combination of the following parameters for each SUL: validity identification, priority information.

[0474] In this embodiment, step S803, the UE selects at least one first SDL from the multiple SDLs according to the reference signal strength of the multiple SDLs, which may include: the UE selects at least one first SDL from the multiple SDLs according to the reference signal strength of the multiple SDLs and one or a combination of the following parameters: SSBindex, validity flag, priority information; the SUL corresponding to the first SDL is the SUL pointed to by the SSBindex, and the validity flag is valid or has the highest priority.

[0475] In this embodiment, the SUL configuration information corresponding to the NDL beam may also include: an NDL threshold and / or an SDL threshold. Step S803, the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, which may include: the UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs and one or a combination of the following parameters: NDL threshold, SDL threshold, SSBindex, validity identifier, priority information.

[0476] For details, please refer to Example 5, Example 6, Example 7, and Example 8 of Embodiment 4, which will not be described in detail. The SUL can be flexibly configured in combination with the validity identifier, priority information, and SSBindex, so that the UE can select the SUL to access according to different scenarios.

[0477] Fig. 9 A block diagram of a random access device according to an embodiment of the present application is shown. Fig. 9 The random access device shown can be applied to a network device to perform Figure 8In step S800, the device includes: a configuration module 110, which is used to send supplementary uplink SUL configuration information, wherein the SUL configuration information includes: multiple SULs, multiple SDLs respectively matched with the multiple SULs, and SDL measurement configuration information, so that the user equipment UE measures the reference signal strength of the multiple SDLs according to the SDL measurement configuration information, and initiates random access from the SUL corresponding to the second SDL; wherein the second SDL is the one with the highest reference signal strength among at least one first SDL, and the at least one first SDL is selected by the UE from the multiple SDLs according to the reference strength of the multiple SDLs. For details, please refer to Embodiment 3 and Embodiment 4.

[0478] In a possible implementation, the configuration module 110 includes: a broadcast unit, configured to omnidirectionally broadcast the SUL configuration information. In this embodiment, the SUL configuration information may also include: a normal downlink NDL threshold and / or multiple SDL thresholds. For details, please refer to Example 3.

[0479] In a possible implementation, the configuration module 110 includes: a first sending unit, used to use an NDL beam to send SUL configuration information corresponding to the NDL beam to the UE, the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information; different NDL beams correspond to different SUL configuration information. In this embodiment, the SUL configuration information corresponding to the NDL beam may also include: an NDL threshold and / or an SDL threshold. For details, please refer to Example 4.

[0480] In one possible implementation, the configuration module 110 includes: a second sending unit, used to use an NDL beam to send SUL configuration information corresponding to the NDL beam, the SUL configuration information corresponding to the NDL beam includes multiple SULs, multiple SDLs respectively matching the multiple SULs, and SDL measurement configuration information; the NDL beam also includes an SSBindex, different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access; and / or, the SUL configuration information corresponding to the NDL beam also includes one of the following parameters or a combination of several parameters for each SUL: validity identification, priority information. In this embodiment, the SUL configuration information corresponding to the NDL beam may also include: an NDL threshold and / or an SDL threshold. Please refer to Example 4 for details.

[0481] Fig.10 A block diagram of a random access device according to an embodiment of the present application is shown. Fig.10The random access device shown may be applied to a user equipment UE, and the random access device may include:

[0482] A first receiving module 120, configured to receive supplementary uplink SUL configuration information, wherein the SUL configuration information includes a plurality of SULs, a plurality of supplementary downlink SDLs respectively matched with the plurality of SULs, and SDL measurement configuration information;

[0483] A first measurement module 121, configured to measure the reference signal strengths of the plurality of SDLs according to the SDL measurement configuration information;

[0484] A selection module 122, configured to select at least one first SDL from the plurality of SDLs according to the reference signal strengths of the plurality of SDLs, and select a second SDL from the at least one first SDL, wherein the reference signal strength of the second SDL is the highest among the at least one first SDL;

[0485] The first access module 123 is configured to initiate random access from the SUL corresponding to the second SDL.

[0486] In one possible implementation, the first receiving module 120 includes: a first receiving unit, used to receive a normal downlink NDL beam, the NDL beam including SUL configuration information corresponding to the NDL beam, the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information.

[0487] In one possible implementation, the SUL configuration information corresponding to the NDL beam includes multiple SULs, multiple SDLs matching the multiple SULs respectively, and SDL measurement configuration information; the NDL beam also includes an SSBindex, and different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access; and / or, the SUL configuration information corresponding to the NDL beam also includes: one or a combination of the following parameters for each SUL: validity identifier, priority information.

[0488] In one possible implementation, the selection module 122 includes: a first selection unit, used to select at least one first SDL from the multiple SDLs based on the reference signal strength of the multiple SDLs and one or a combination of the following parameters: SSBindex, validity flag, priority information; the SUL corresponding to the first SDL is the SUL pointed to by the SSBindex, and the validity flag is valid or has the highest priority.

[0489] In a possible implementation, the first receiving module 120 includes: a second receiving unit, configured to receive the SUL configuration information broadcast by a network device.

[0490] In a possible implementation, the SUL configuration information also includes NDL measurement configuration information, and the device also includes: a second measurement module 124, used to measure the reference signal strength of the normal downlink NDL; the selection module 122 includes: a second selection unit, used to select at least one first SDL from the multiple SDLs based on the reference signal strengths of the multiple SDLs and the reference signal strength of the NDL, and the reference signal strength of the at least one first SDL is greater than the reference signal strength of the NDL.

[0491] In one possible implementation, the device also includes: a second access module 125, which is used to initiate random access from the NUL if the reference signal strength of the multiple SDLs is not measured, or the measured reference signal strength of the multiple SDLs is less than or equal to the reference signal strength of the NDL, and the reference signal strength of the NDL is measured.

[0492] In a possible implementation manner, the SUL configuration information further includes an NDL threshold, and when the reference signal strength of the NDL is less than the NDL threshold, the SDL with the measured reference signal strength is the at least one first SDL.

[0493] In one possible implementation, the second access module 125 is also used to initiate random access from the NUL by the UE if the reference signal strength of the NDL is not less than the NDL threshold; if the reference signal strengths of the multiple SDLs are not measured, and the reference signal strength of the NDL is measured, the UE initiates random access from the NUL.

[0494] In a possible implementation, the SUL configuration information also includes an NDL threshold and an SDL threshold corresponding to the SDL, the reference signal strength of at least one first SDL is greater than the corresponding SDL threshold, and the selection module 122 includes: a third selection unit, which is used to select a second SDL with the highest reference signal strength from the first SDL if the reference signal of the NDL is less than the NDL threshold.

[0495] In a possible implementation, the second access module 125 is further configured to: if the reference signal strengths of the multiple SDLs are not measured, or the measured reference signal strengths of the multiple SDLs are less than or equal to the corresponding SDL threshold, and the reference signal strength of the NDL is measured, the UE initiates random access from the NUL;

[0496] In one possible implementation, the SUL configuration information includes an SDL threshold corresponding to the SDL, and the selection module 122 includes: a fourth selection unit, used to select at least one first SDL from the multiple SDLs based on the reference signal strengths of the multiple SDLs, the SDL threshold and the reference signal strength of the NDL, the reference signal strength of the at least one first SDL being greater than the corresponding SDL threshold and greater than the reference signal strength of the NDL.

[0497] In a possible implementation, the second access module 125 is also used to initiate random access from the NUL by the UE if the reference signal strength of the multiple SDLs is not measured, or the measured reference signal strength of the multiple SDLs is less than or equal to the corresponding SDL threshold, or the measured reference signal strength of the multiple SDLs is less than the reference signal strength of the NDL, and the reference signal strength of the NDL is measured.

[0498] Fig.11 A block diagram of a random access device according to an embodiment of the present application is shown. Fig.11 The random access device shown can be applied to a network device, and the device may include:

[0499] A sending module 90 is used to use a normal downlink NDL beam to send a supplementary uplink SUL configuration information corresponding to the NDL beam, wherein the SUL configuration information includes a SUL identifier of at least one SUL and at least one SUL threshold, and the SUL configuration information corresponding to different NDL beams is different; wherein the at least one SUL is a SUL provided by a second network device; the SUL identifier of the at least one SUL includes a first SUL identifier, and the at least one SUL threshold includes a first SUL threshold corresponding to the first SUL identifier; so that the UE measures the reference signal strength corresponding to the NDL beam, and if the reference signal strength is less than the first SUL threshold, the UE initiates random access from the first SUL corresponding to the first SUL identifier.

[0500] In one possible implementation, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the SUL configuration information also includes one or a combination of the following parameters for each SUL: a first validity identifier, priority information; and / or, the NDL beam also includes an SSBindex, and different NDL beams include different SSBindexes, and the SSBindex is used to indicate the SUL used to initiate random access.

[0501] In a possible implementation manner, the SUL configuration information further includes a second validity identifier of the SUL threshold.

[0502] Fig.12 A block diagram of a random access device according to an embodiment of the present application is shown. Fig.12 The random access device shown may be applied to a user equipment UE, and the device may include:

[0503] The second receiving module 91 is used to receive a normal downlink NDL beam, wherein the NDL beam includes a supplementary uplink SUL configuration information corresponding to the NDL beam, and the SUL configuration information includes a SUL identifier of at least one SUL and at least one SUL threshold; wherein the NDL beam is a beam sent by a first network device, and the at least one SUL is a SUL provided by a second network device; the SUL identifier of the at least one SUL includes a first SUL identifier, and the at least one SUL threshold includes a first SUL threshold corresponding to the first SUL identifier;

[0504] A third measurement module 92, configured to measure the reference signal strength corresponding to the NDL beam;

[0505] The first access module 93 is configured to initiate random access from a first SUL corresponding to a first SUL identifier if the reference signal strength is less than the first SUL threshold.

[0506] In a possible implementation, the UE receives different NDL beams in different areas, and different NDL beams include different SUL configuration information.

[0507] In a possible implementation manner, the first network device is a base station, or a small cell, or other user equipment.

[0508] In a possible implementation, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, and the SUL configuration information also includes a first validity identifier and / or priority information of each SUL; the first validity identifier of the SUL corresponding to the first SUL identifier is valid and / or has the highest priority.

[0509] In a possible implementation, the SUL configuration information includes SUL identifiers of multiple SULs and multiple SUL thresholds, the NDL beam also includes an SSBindex, different NDL beams received by the UE include different SSBindexes, and the SSBindex is used to indicate the first SUL. In a possible implementation, the first SUL identifier is the remainder of the value of the SSBindex and the total number of multiple SULs, or the first SUL identifier is the value of the SSBindex.

[0510] In a possible implementation, the SUL configuration information also includes a second validity identifier of the at least one SUL threshold, and the device also includes: a second access module 94, which is used to initiate random access from NUL if the second validity identifier of the SUL threshold is invalid or the SUL threshold is 0 or a negative value.

[0511] Fig.13 A block diagram of a network device according to an embodiment of the present application is shown. Fig.13 The network device shown may be the first network device, the second network device, and the network device mentioned above. Fig.13 As shown, the network device may be composed of a processor 801, a memory 802, and a transceiver 803, wherein the processor, the memory, and the transceiver may be connected via one or more buses. The functions to be implemented by the sending module 90 or the configuration module 110 may be implemented by the transceiver 803 of the network device, or may be implemented by the processor 801 controlling the transceiver 803.

[0512] The processor 801 is the control center of the network device, which uses various interfaces and lines to connect various parts of the entire network device, and executes various functions of the network device and / or processes data by running or executing software programs and / or modules stored in the memory 802, and calling data stored in the memory. The processor can be composed of an integrated circuit (integrated circuit, referred to as IC), for example, it can be composed of a single packaged IC, or it can be composed of multiple packaged ICs with the same or different functions. For example, the processor can include only a central processing unit (CPU), or it can be a combination of a GPU, a digital signal processor (DSP), and a control chip (such as a baseband chip) in a transceiver. In an embodiment of the present invention, the CPU can be a single computing core or multiple computing cores.

[0513] The transceiver 803 is used to establish a communication channel so that the network device can be connected to the receiving device through the communication channel, thereby realizing data transmission between network devices. The transceiver may include communication modules such as a wireless local area network (WLAN) module, a Bluetooth module, a baseband module, and a radio frequency (RF) circuit corresponding to the communication module, which is used to perform wireless local area network communication, Bluetooth communication, infrared communication and / or cellular communication system communication, such as wideband code division multiple access (WCDMA) and / or high speed downlink packet access (HSDPA). The transceiver is used to control the communication of various components in the network device and can support direct memory access.

[0514] In different embodiments of the present invention, the various transceivers in the transceiver 803 generally appear in the form of an integrated circuit chip and can be selectively combined without including all transceivers and corresponding antenna groups. For example, the transceiver 803 may only include a baseband chip, a radio frequency chip and a corresponding antenna to provide communication functions in a cellular communication system. Through the wireless communication connection established by the transceiver, such as wireless LAN access or WCDMA access, the network device can be connected to a cellular network or the Internet. In some optional embodiments of the present invention, the communication module in the transceiver, such as the baseband module, can be integrated into a processor, typically such as the APQ+MDM series platform provided by Qualcomm. The radio frequency circuit is used to receive and send signals during information transmission or call. For example, after receiving the downlink information of the network device, it is processed by the processor; in addition, the designed uplink data is sent to the network device. Typically, the radio frequency circuit includes known circuits for performing these functions, including but not limited to an antenna system, a radio frequency transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a codec chipset, a user identity module (SIM) card, a memory, and the like. In addition, the radio frequency circuit can also communicate with a network and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to global system of mobile communication (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), high speed uplink packet access (HSUPA), long term evolution (LTE), email, short messaging service (SMS), and the like.

[0515] An embodiment of the present application provides a random access device, comprising: a processor and a memory for storing processor-executable instructions; wherein the processor is configured to implement the above method when executing the instructions.

[0516] An embodiment of the present application provides a non-volatile computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the above method is implemented.

[0517] An embodiment of the present application provides a computer program product, including a computer-readable code, or a non-volatile computer-readable storage medium carrying the computer-readable code. When the computer-readable code runs in a processor of an electronic device, the processor in the electronic device executes the above method.

[0518] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples of computer-readable storage media (a non-exhaustive list) include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disc (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the foregoing.

[0519] The computer-readable program instructions or codes described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0520] The computer program instructions for performing the operation of the present application may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. Computer-readable program instructions may be executed completely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or completely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet). In some embodiments, by utilizing the state information of computer-readable program instructions to personalize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA) or a programmable logic array (PLA), the electronic circuit can execute the computer-readable program instructions to implement various aspects of the present application.

[0521] Various aspects of the present application are described herein with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer-readable program instructions.

[0522] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processor of the computer or other programmable data processing device, a device that implements the functions / actions specified in one or more boxes in the flowchart and / or block diagram is generated. These computer-readable program instructions can also be stored in a computer-readable storage medium, and these instructions cause the computer, programmable data processing device, and / or other equipment to work in a specific manner, so that the computer-readable medium storing the instructions includes a manufactured product, which includes instructions for implementing various aspects of the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0523] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operating steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0524] The flow chart and block diagram in the accompanying drawings show the possible architecture, function and operation of the device, system, method and computer program product according to multiple embodiments of the present application. In this regard, each square frame in the flow chart or block diagram can represent a part of a module, program segment or instruction, and a part of the module, program segment or instruction includes one or more executable instructions for realizing the logical function of the specification. In some alternative implementations, the functions marked in the square frame can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous square frames can actually be executed substantially in parallel, and they can also be executed in reverse order sometimes, depending on the functions involved.

[0525] It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, can be implemented by hardware (such as a circuit or ASIC (Application Specific Integrated Circuit)) that performs the corresponding function or action, or can be implemented by a combination of hardware and software, such as firmware.

[0526] Although the present invention is described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0527] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A random access method, characterized in that: include: The user equipment UE receives supplementary uplink SUL configuration information, where the SUL configuration information includes a plurality of SULs, a plurality of supplementary downlink SDLs respectively matching the plurality of SULs, and SDL measurement configuration information; The UE measures the reference signal strengths of the multiple SDLs according to the SDL measurement configuration information; The UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, and selects a second SDL from the at least one first SDL, wherein the reference signal strength of the second SDL is the highest among the at least one first SDL; The UE initiates random access from the SUL corresponding to the second SDL; The UE receives SUL configuration information, including: The UE receives a normal downlink NDL beam, wherein the NDL beam includes SUL configuration information corresponding to the NDL beam, The SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information.

2. The method according to claim 1, characterized in that The SUL configuration information corresponding to the NDL beam includes multiple SULs, multiple SDLs respectively matched with the multiple SULs, and SDL measurement configuration information; The NDL beam also includes an SSBindex, and different NDL beams include different SSBindexes. The SSBindex is used to indicate the SUL used to initiate random access; and / or, the SUL configuration information corresponding to the NDL beam also includes: one or a combination of the following parameters for each SUL: validity identifier, priority information.

3. The method according to claim 2, characterized in that The UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, including: The UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs and one or a combination of the following parameters: SSB index, validity identifier, and priority information; The SUL corresponding to the first SDL is the SUL pointed to by SSBindex, and the validity flag is valid or has the highest priority.

4. The method according to claim 1, characterized in that: The UE receives SUL configuration information, including: The UE receives the broadcasted SUL configuration information.

5. The method according to any one of claims 1 to 4, characterized in that: The SUL configuration information also includes NDL measurement configuration information, and the method further includes: The UE measures the reference signal strength of the normal downlink NDL; The UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, including: The UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs and the reference signal strength of the NDL, where the reference signal strength of the at least one first SDL is greater than the reference signal strength of the NDL.

6. The method according to any one of claims 1 to 4, characterized in that: The SUL configuration information also includes an NDL threshold, and the method further includes: the UE measures the reference signal strength of the normal downlink NDL; When the reference signal strength of the NDL is less than the NDL threshold, the SDL having the measured reference signal strength is the at least one first SDL.

7. The method according to any one of claims 1 to 4, characterized in that: The SUL configuration information also includes an NDL threshold and an SDL threshold corresponding to the SDL, and the method further includes: the UE measuring a reference signal strength of a normal downlink NDL; The reference signal strength of the at least one first SDL is greater than the corresponding SDL threshold, Selecting a second SDL from the at least one first SDL comprises: If the reference signal of the NDL is less than the NDL threshold, the UE selects a second SDL having the highest reference signal strength from the first SDL.

8. The method according to any one of claims 1 to 4, characterized in that: The SUL configuration information includes an SDL threshold corresponding to the SDL, and the method further includes: the UE measures a reference signal strength of a normal downlink NDL; The UE selects at least one first SDL from the multiple SDLs according to the reference signal strengths of the multiple SDLs, including: The UE selects at least one first SDL from the multiple SDLs based on the reference signal strengths of the multiple SDLs, the SDL threshold and the reference signal strength of the NDL, and the reference signal strength of the at least one first SDL is greater than the corresponding SDL threshold and greater than the reference signal strength of the NDL.

9. A random access method, characterized in that: The method comprises: Sending supplementary uplink SUL configuration information, wherein the SUL configuration information includes: multiple SULs, multiple supplementary downlink SDLs respectively matching the multiple SULs, and SDL measurement configuration information, so that a user equipment UE measures reference signal strengths of the multiple SDLs according to the SDL measurement configuration information, and initiates random access from a SUL corresponding to a second SDL; wherein the second SDL is the one with the highest reference signal strength among at least one first SDL, and the at least one first SDL is selected by the UE from the multiple SDLs according to the reference strengths of the multiple SDLs; Send SUL configuration information, including: Use the NDL beam to send SUL configuration information corresponding to the NDL beam, where the SUL configuration information corresponding to the NDL beam includes a SUL, an SDL matching the SUL, and SDL measurement configuration information; Different NDL beams correspond to different SUL configuration information.

10. The method according to claim 9, characterized in that Send SUL configuration information, including: The SUL configuration information is broadcast omnidirectionally.

11. The method according to claim 10, characterized in that The SUL configuration information also includes: a normal downlink NDL threshold and / or multiple SDL thresholds.

12. The method according to claim 9, characterized in that The SUL configuration information corresponding to the NDL beam also includes: an NDL threshold and / or an SDL threshold.

13. The method according to claim 9, characterized in that Sending SUL configuration information includes: using an NDL beam to send SUL configuration information corresponding to the NDL beam, where the SUL configuration information corresponding to the NDL beam includes multiple SULs, multiple SDLs respectively matched with the multiple SULs, and SDL measurement configuration information; The NDL beam also includes an SSBindex, and different NDL beams include different SSBindexes. The SSBindex is used to indicate the SUL used to initiate random access; and / or, the SUL configuration information corresponding to the NDL beam also includes one or a combination of the following parameters for each SUL: validity identifier, priority information.

14. The method according to claim 13, characterized in that The SUL configuration information corresponding to the NDL beam also includes: an NDL threshold and / or an SDL threshold.

15. A random access device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to implement the method of any one of claims 1-8 or the method of any one of claims 9-14 when executing the instructions.

16. A non-volatile computer-readable storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method described in any one of claims 1 to 8 is implemented, or the method described in any one of claims 9 to 14 is implemented.

17. A computer program product, comprising a computer readable code, wherein when the computer readable code is executed in an electronic device, a processor in the electronic device executes the method according to any one of claims 1 to 8, or the method according to any one of claims 9 to 14.

18. A terminal device, characterized in that: The terminal device comprises: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to implement the method of any one of claims 1 to 8 when executing the instructions.

19. A base station device, characterized in that: The base station device comprises: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to implement the method of any one of claims 9 to 14 when executing the instructions.

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