Granted Patent B2

US 12,490,285 · App. 18/261,491 · Granted Dec 2, 2025

Inventors: Sicong Zhao (Shanghai, CN); Zhenzhu Lei (Shanghai, CN)

Assignee: SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD.

H04W72/51

Abstract

Claims (33)

1 . A method for identifying a reduced capability (RedCap) user equipment (UE) type, comprising:

transmitting, based on random access channel (RACH) configuration information of RedCap UEs in a cell broadcast by the base station and comprising a proportion parameter of available RACH occasion (RO) resources for different RedCap UE types, Msg1 to the base station by using RO resources corresponding to a RedCap UE type of the different RedCap UE types in such a manner that the base station identifies the RedCap UE type of a RedCap UE of the RedCap UEs based on the RO resources used by the RedCap UE to transmit the Msg1.

2 . The method according to claim 1 , wherein the different RedCap UE types of RedCap UEs comprise a first-type RedCap UE and a second-type RedCap UE.

3 . The method according to claim 1 , wherein a proportion of RO resources used by a first-type RedCap UE is M/KQ; and

a proportion of RO resources used by a second-type RedCap UE is (KQ−M)/KQ,

where M denotes the proportion parameter, Q denotes a number of ROs corresponding to each synchronization signal block (SSB) in an association period among the RO resources, KQ denotes a number of ROs corresponding to each SSB in K association periods, K=┌M/Q┐, M≠nQ, and n is a positive integer.

4 . The method according to claim 3 , wherein the RO resources are allocated to the RedCap UEs based on the proportion parameter in a first mapping manner or a second mapping manner.

5 . The method according to claim 4 , wherein the first mapping manner comprises a continuous mapping which is in units of K association periods, the first-type RedCap UE uses first M ROs of the KQ ROs corresponding to each SSB, and the second-type RedCap UE uses (M+1)-th to KQ-th ROs of the KQ ROs corresponding to each SSB.

6 . The method according to claim 4 , wherein the second mapping manner is a discontinuous mapping which is in units of K association periods, SSBx #y denotes a y-th RO corresponding to an x-th SSB, y is an index of an RO corresponding to SSBx, y=0, 1 . . . , K*Q−1, and y is numbered in a frequency-domain-first, time-domain-second manner;

in a case where M is smaller than or equal to Q/2, the index of the RO corresponding to each SSBx that is used by the first-type RedCap UE satisfies y mod k=0, and k=┌Q/M┐; and

in a case where M is greater than Q/2, the index of the RO corresponding to each SSBx that is used by the second-type RedCap UE satisfies y mod k=0, and k=┌K*Q/(K*Q−M)┐.

7 . A user equipment (UE), comprising a processor, a memory, and a computer program stored on the memory, wherein the computer program, when executed by the processor, cause the processor to:

transmit, based on random access channel (RACH) configuration information of RedCap UEs in a cell broadcast by the base station and comprising a proportion parameter of available RACH occasion (RO) resources for different RedCap UE types, Msg1 to the base station by using RO resources corresponding to a RedCap UE type of the different RedCap UE types in such a manner that the base station identifies the RedCap UE type of a RedCap UE of the RedCap UEs based on the RO resources used by the RedCap UE to transmit the Msg1.

8 . The UE according to claim 7 , wherein the different RedCap UE types of RedCap UEs comprise a first-type RedCap UE and a second-type RedCap UE.

9 . The UE according to claim 7 , wherein a proportion of RO resources used by a first-type RedCap UE is M/KQ; and

a proportion of RO resources used by a second-type RedCap UE is (KQ−M)/KQ,

where M denotes the proportion parameter, Q denotes a number of ROs corresponding to each synchronization signal block (SSB) in an association period among the RO resources, KQ denotes a number of ROs corresponding to each SSB in K association periods, K=┌M/Q┐, M≠nQ, and n is a positive integer.

10 . The UE according to claim 9 , wherein the RO resources are allocated to the RedCap UEs based on the proportion parameter in a first mapping manner or a second mapping manner.

11 . The UE according to claim 10 , wherein the first mapping manner comprises a continuous mapping which is in units of K association periods, the first-type RedCap UE uses first M ROs of the KQ ROs corresponding to each SSB, and the second-type RedCap UE uses (M+1)-th to KQ-th ROs of the KQ ROs corresponding to each SSB.

12 . The UE according to claim 10 , wherein the second mapping manner is a discontinuous mapping which is in units of K association periods, SSBx #y denotes a y-th RO corresponding to an x-th SSB, y is an index of an RO corresponding to SSBx, y=0, 1 . . . , K*Q−1, and y is numbered in a frequency-domain-first, time-domain-second manner;

in a case where M is smaller than or equal to Q/2, the index of the RO corresponding to each SSBx that is used by the first-type RedCap UE satisfies y mod k=0, and k=┌Q/M┐; and

in a case where M is greater than Q/2, the index of the RO corresponding to each SSBx that is used by the second-type RedCap UE satisfies y mod k=0, and k=┌K*Q/(K*Q−M)┐.

13 . A non-transitory computer readable medium, storing program codes, wherein the program codes, when executed by a processor, cause the processor to:

transmit, based on random access channel (RACH) configuration information of RedCap UEs in a cell broadcast by the base station and comprising a proportion parameter of available RACH occasion (RO) resources for different RedCap UE types, Msg1 to the base station by using RO resources corresponding to a RedCap UE type of the different RedCap UE types in such a manner that the base station identifies the RedCap UE type of a RedCap UE of the RedCap UEs based on the RO resources used by the RedCap UE to transmit the Msg1.

14 . The non-transitory computer readable medium according to claim 13 , wherein the different RedCap UE types of RedCap UEs comprise a first-type RedCap UE and a second-type RedCap UE.

15 . The non-transitory computer readable medium according to claim 13 , wherein a proportion of RO resources used by a first-type RedCap UE is M/KQ; and

a proportion of RO resources used by a second-type RedCap UE is (KQ−M)/KQ,

where M denotes the proportion parameter, Q denotes a number of ROs corresponding to each synchronization signal block (SSB) in an association period among the RO resources, KQ denotes a number of ROs corresponding to each SSB in K association periods, K=┌M/Q┐, M≠nQ, and n is a positive integer.

16 . The non-transitory computer readable medium according to claim 15 , wherein the RO resources are allocated to the RedCap UEs based on the proportion parameter in a first mapping manner or a second mapping manner.

17 . The non-transitory computer readable medium according to claim 16 , wherein the first mapping manner comprises a continuous mapping which is in units of K association periods, the first-type RedCap UE uses first M ROs of the KQ ROs corresponding to each SSB, and the second-type RedCap UE uses (M+1)-th to KQ-th ROs of the KQ ROs corresponding to each SSB.

18 . The non-transitory computer readable medium according to claim 16 , wherein the second mapping manner is a discontinuous mapping which is in units of K association periods, SSBx #y denotes a y-th RO corresponding to an x-th SSB, y is an index of an RO corresponding to SSBx, y=0, 1 . . . , K*Q−1, and y is numbered in a frequency-domain-first, time-domain-second manner;

in a case where M is smaller than or equal to Q/2, the index of the RO corresponding to each SSBx that is used by the first-type RedCap UE satisfies y mod k=0, and k=┌Q/M┐; and

in a case where M is greater than Q/2, the index of the RO corresponding to each SSBx that is used by the second-type RedCap UE satisfies y mod k=0, and k=┌K*Q/(K*Q−M)┐.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (13)