CN-122002616-A - Random access method and equipment

CN122002616ACN 122002616 ACN122002616 ACN 122002616ACN-122002616-A

Abstract

According to an embodiment of the disclosure, a random access method and a device are provided. In one example aspect, a method performed by a user equipment, UE, in a communication system includes receiving second configuration information including information of a first random access resource, information of a paging cycle, first information indicating a partial paging cycle in the paging cycle, information of a paging frame, third indication information of a partial paging frame in the paging frame, receiving DCI including information related to activation of the first random access resource, performing random access based on resources in a set of random access resources including a second random access resource and the activated first random access resource, wherein a listening occasion of the DCI is determined based on the partial paging frame in the partial paging cycle.

Inventors

ZHANG ZHONGFENG
XIONG QI
QU NAN
SUN FEIFEI
YU BIN

Assignees

北京三星通信技术研究有限公司
三星电子株式会社

Dates

Publication Date: 20260508
Application Date: 20250312
Priority Date: 20241106

Claims (15)

1.A method performed by a user equipment, UE, in a communication system, comprising: Receiving second configuration information, wherein the second configuration information comprises information of a first random access resource, information of a paging cycle, first information indicating a part of the paging cycle in the paging cycle, information of a paging frame and third indication information of a part of the paging frame in the paging frame; Receiving DCI including information related to activation of the first random access resource; random access is performed based on the activated first random access resource, Wherein a listening occasion of the DCI is determined based on the partial paging frame in the partial paging period.
2. The method of claim 1, wherein the second configuration information further comprises one of: information of paging occasions and second information indicating part of the paging occasions; Information indicating the UE or the UE group to monitor the DCI based on a paging cycle; Information indicating the UE or the UE group to monitor the DCI based on the paging frame; and information indicating the UE or the UE group to monitor the DCI based on the paging occasion.
3. The method of claim 1, wherein the first information comprises a first parameter and a second parameter, The partial paging cycle is determined based on the first parameter and the second parameter.
4. The method of claim 3, wherein the index number t_index of the partial paging cycle satisfies t_index mod first parameter = second parameter.
5. The method of claim 1, wherein the third indication information comprises a third parameter and a fourth parameter, or comprises offset related information of paging frames, or comprises index related information of the partial paging frames The system frame number SFN of the partial paging frame satisfies [ floor (SFN/T) ] mod third parameter=fourth parameter, wherein T is a paging frame period and takes a radio frame as a unit.
6. The method of claim 1, wherein the partial paging frame is used for UEs belonging to at least two paging groups to receive the DCI, or The partial paging occasion is used for receiving the DCI by the UE belonging to at least two paging subgroups.
7. The method of claim 1, performing random access based on the activated first random access resource, comprising: after the first time domain location, the activated first random access resource is selected to perform random access, Wherein the first time domain position is not earlier than the time of receiving the DCI, and has at least a first time offset with respect to the time of receiving the DCI, and the first time offset is greater than or equal to 0.
8. The method of claim 7, wherein the first time domain location is determined based on at least one of a paging cycle in which the DCI is received, a third cycle associated with random access resources, a second cycle configured to be associated with an active period of the first random access resources, Wherein the first time is a start position or an end position of one of a last radio frame, a last paging occasion associated with a last paging frame, or a start position or an end position of a first paging frame corresponding to a next paging cycle of the paging cycle in which the DCI is received.
9. The method of claim 7, wherein the first time domain location corresponds to a start location or an end location of one or more paging frames in a paging cycle, Each of the one or more paging frames is for a UE belonging to at least two paging groups to receive the DCI.
10. The method of claim 7, wherein the first time domain location is determined based on a start location of a next third period of a third period in which the DCI is received, The third period is at least one of an association pattern period of the SSB to the first random access resource, an association period of the SSB to the first random access resource, a mapping cycle of the SSB to the first random access resource and a period of the first random access resource.
11. A method performed by a user equipment, UE, in a communication system, comprising: Transmitting a random access message using the second random access resource; Receiving a random access response, RAR, or DCI scheduling the RAR, the RAR or the DCI including information related to activation of a first random access resource; The activated first random access resource is selected to perform random access.
12. A method performed by a base station in a communication system, comprising: transmitting second configuration information, wherein the second configuration information comprises information of a first random access resource, information of a paging cycle, first information indicating a part of the paging cycle in the paging cycle, information of a paging frame and third indication information of a part of the paging frame in the paging frame; Transmitting DCI including information related to activation of the first random access resource; the random access signal transmitted by the UE is received, Wherein the first information and the third indication information are used to determine a listening occasion of the DCI.
13. A method performed by a base station in a communication system, comprising: receiving a first random access message, the first random access message being received using a second random access resource; transmitting a random access response, RAR, or DCI scheduling the RAR, the RAR or the DCI including information related to activation of a first random access resource; a second random access message is received, the second random access message being sent based on the activated first random access resource or the second random access resource.
14. A user equipment, UE, in a communication system, comprising: a transceiver configured to transmit and/or receive signals; A controller configured to control the UE to perform the method according to any of claims 1-11.
15. A base station in a communication system, comprising: a transceiver configured to transmit and/or receive signals; a controller configured to control the base station to perform the method according to any of claims 12-13.

Description

Random access method and equipment Technical Field The present disclosure relates to the field of wireless communications, and more particularly, to a random access method and apparatus. Background In order to meet the increasing demand for wireless data communication services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or quasi 5G communication systems. Therefore, a 5G or quasi 5G communication system is also referred to as a "super 4G network" or a "LTE-after-system". The 5G communication system is implemented in a higher frequency (millimeter wave) band, for example, a 60GHz band, to achieve a higher data rate. In order to reduce propagation loss of radio waves and increase transmission distance, beamforming, massive Multiple Input Multiple Output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, massive antenna techniques are discussed in 5G communication systems. Further, in the 5G communication system, development of system network improvement is being performed based on advanced small cells, cloud Radio Access Networks (RANs), ultra dense networks, device-to-device (D2D) communication, wireless backhaul, mobile networks, cooperative communication, cooperative multipoint (CoMP), receiving-end interference cancellation, and the like. In 5G systems, hybrid FSK and QAM modulation (FQAM) and Sliding Window Superposition Coding (SWSC) as Advanced Coding Modulation (ACM), and Filter Bank Multicarrier (FBMC), non-orthogonal multiple access (NOMA) and Sparse Code Multiple Access (SCMA) as advanced access technologies have been developed. Disclosure of Invention According to an embodiment of the present disclosure, there is provided a method performed by a user equipment UE in a communication system, including: Receiving second configuration information, wherein the second configuration information comprises information of a first random access resource, information of a paging cycle, first information indicating a part of the paging cycle in the paging cycle, information of a paging frame and third indication information of a part of the paging frame in the paging frame; Receiving DCI including information related to activation of the first random access resource; random access is performed based on the activated random access resources, Wherein a listening occasion of the DCI is determined based on the partial paging frame in the partial paging period. In one implementation, the second configuration information further includes one of: information of paging occasions and second information indicating part of the paging occasions; Information indicating the UE or the UE group to monitor the DCI based on a paging cycle; Information indicating the UE or the UE group to monitor the DCI based on the paging frame; and information indicating the UE or the UE group to monitor the DCI based on the paging occasion. In one implementation, the first information includes a first parameter and a second parameter, The partial paging cycle is determined based on the first parameter and the second parameter. In one implementation, the index number t_index of the partial paging cycle satisfies t_index mod first parameter=second parameter. In one implementation, the third indication information includes a third parameter and a fourth parameter, or includes information related to an offset of a paging frame, or includes information related to an index of the partial paging frame, The system frame number SFN of the partial paging frame satisfies [ floor (SFN/T) ] mod third parameter=fourth parameter, wherein T is a paging frame period and takes a radio frame as a unit. In one implementation, the partial paging frame is used for receiving the DCI by a UE belonging to at least two paging groups, or The partial paging occasion is used for receiving the DCI by the UE belonging to at least two paging subgroups. In one implementation, performing random access based on activated random access resources includes: after the first time domain location, the activated first random access resource is selected to perform random access, Wherein the first time domain position is not earlier than the time of receiving the DCI, and has at least a first time offset with respect to the time of receiving the DCI, and the first time offset is greater than or equal to 0. In one implementation, the first time domain location is determined based on at least one of a paging cycle in which the DCI is received, a third cycle associated with random access resources, and a second cycle configured to be associated with an activation period of the first random access resources. Wherein the first time is a start position or an end position of one of a last radio frame, a last paging occasion associated with a last paging frame, or a start position or an end position of a first paging frame corresponding to a next paging cycle of the paging cycle in which the DCI is received. In one i