US-12621867-B2 - RO time-domain resource configuration method and apparatus and electronic device

Abstract

A Random access Occasion (RO) time-domain resource configuration method and apparatus and an electronic device are provided. The RO time-domain resource configuration method is performed by a terminal, and includes: obtaining a subcarrier spacing of a reference time unit determined according to a first rule; and determining, based on a first information set and the subcarrier spacing of the reference time unit, RO time-domain resource configuration information that is in each subframe and that is used for transmitting a random access preamble. Parameters of the first information set are obtained in at least one of the following manners: parameters configured by second configuration signaling; obtained by extending the parameters configured by the second configuration signaling; parameters predefined by a protocol; or obtained by extending the parameters predefined by the protocol.

Inventors

• Ping Li
• Qi Hong
• Gen LI

Assignees

• VIVO MOBILE COMMUNICATION CO., LTD.

Dates

Publication Date

20260505

Application Date

20230606

Priority Date

20201207

Claims (20)

1. 1 . A Random access Occasion (RO) time-domain resource configuration method, performed by a terminal, comprising: obtaining a subcarrier spacing of a reference time unit determined according to a first rule; and determining, based on a first information set and the subcarrier spacing of the reference time unit, RO time-domain resource configuration information that is in each subframe and that is used for transmitting a random access preamble, wherein parameters of the first information set are obtained in at least one of the following manners: parameters configured by second configuration signaling; obtained by extending the parameters configured by the second configuration signaling; or obtained by extending the parameters predefined by the protocol.
2. 2 . The RO time-domain resource configuration method according to claim 1 , wherein the first rule comprises: the subcarrier spacing of the reference time unit is determined by a network-side device or the terminal based on a subcarrier spacing of a Physical Random Access Channel (PRACH) time unit configured by the network-side device.
3. 3 . The RO time-domain resource configuration method according to claim 2 , wherein the subcarrier spacing of the reference time unit is 1 A of the subcarrier spacing of the PRACH time unit, wherein A is equal to 1 or is an even number greater than 1, and A is predefined by a protocol or configured by signaling.
4. 4 . The RO time-domain resource configuration method according to claim 3 , wherein A is only applied or configured in a frequency range or subcarrier spacing.
5. 5 . The RO time-domain resource configuration method according to claim 2 , wherein when the subcarrier spacing of the reference time unit is determined by the network-side device, the obtaining a subcarrier spacing of a reference time unit comprises: receiving first configuration signaling of the network-side device, wherein the first configuration signaling implicitly indicates or explicitly indicates the subcarrier spacing of the reference time unit determined by the network-side device.
6. 6 . The RO time-domain resource configuration method according to claim 1 , wherein the first information set comprises at least one of the following: a time unit number of an RO based on a reference time unit; a time unit number of a PRACH within a reference time unit; a sequence number of a PRACH time unit within a reference time unit; or RO configuration information of a preset frequency range.
7. 7 . The RO time-domain resource configuration method according to claim 6 , wherein the RO configuration information of the preset frequency range comprises at least one of the following: a number of Ros within a PRACH time unit; a starting symbol of a first RO in time domain within each basic time unit comprising ROs; or a number of Orthogonal Frequency Division Multiple (OFDM) symbols occupied by an RO in time domain.
8. 8 . The RO time-domain resource configuration method according to claim 6 , wherein the RO configuration information of the preset frequency range is predefined by a protocol or configured by signaling.
9. 9 . The RO time-domain resource configuration method according to claim 6 , wherein the time unit number of an RO based on a reference time unit is determined based on at least one of the following: a time unit number of an RO based on a basic time unit, a number s of basic time units comprised within a frame, a subcarrier spacing μ 1 of a reference time unit, or a subcarrier spacing μ 2 of a basic time unit, wherein a value of s is predefined by a protocol or configured by signaling, and a value of μ 2 is predefined by a protocol or configured by signaling.
10. 10 . The RO time-domain resource configuration method according to claim 9 , wherein the time unit number of an RO based on a reference time unit is obtained by performing periodic extension on a time unit number of an RO based on a basic time unit, wherein a period is s, and a number of times of the periodic extension is μ 1 μ 2 .
11. 11 . The RO time-domain resource configuration method according to claim 6 , wherein in a case that N=1, a sequence number n slot R ⁢ A of a PRACH time unit within a reference time unit is equal to 0; or in a case that N>1, a sequence number n slot R ⁢ A of a PRACH time unit within a reference time unit is determined based on at least one of the following: a sequence number of a PRACH time unit within a basic time unit, a maximum number M of PRACH time units comprised within a basic time unit, and N, wherein a value of M is predefined by a protocol or configured by signaling.
12. 12 . The RO time-domain resource configuration method according to claim 11 , wherein in a case that N>1, the sequence number of a PRACH time unit within a reference time unit is obtained by performing periodic extension on the sequence number of a PRACH time unit within a basic time unit, wherein a period is M, and a number of times of the periodic extension is N M .
13. 13 . The RO time-domain resource configuration method according to claim 1 , wherein the time unit is a slot.
14. 14 . An electronic device, comprising a processor; a memory having a computer program or an instruction stored thereon, wherein the computer program or the instruction, when executed by the processor, causes the processor to implement a Random access Occasion (RO) time-domain resource configuration method, comprising: obtaining a subcarrier spacing of a reference time unit determined according to a first rule; and determining, based on a first information set and the subcarrier spacing of the reference time unit, RO time-domain resource configuration information that is in each subframe and that is used for transmitting a random access preamble, wherein parameters of the first information set are obtained in at least one of the following manners: parameters configured by second configuration signaling; obtained by extending the parameters configured by the second configuration signaling; or obtained by extending the parameters predefined by the protocol.
15. 15 . The RO time-domain resource configuration method according to claim 14 , wherein the first rule comprises: the subcarrier spacing of the reference time unit is determined by a network-side device or the terminal based on a subcarrier spacing of a Physical Random Access Channel (PRACH) time unit configured by the network-side device.
16. 16 . The RO time-domain resource configuration method according to claim 15 , wherein the subcarrier spacing of the reference time unit is 1 A of the subcarrier spacing of the PRACH time unit, wherein A is equal to 1 or is an even number greater than 1, and A is predefined by a protocol or configured by signaling.
17. 17 . The RO time-domain resource configuration method according to claim 16 , wherein A is only applied or configured in a frequency range or subcarrier spacing.
18. 18 . The RO time-domain resource configuration method according to claim 15 , wherein when the subcarrier spacing of the reference time unit is determined by the network-side device, the obtaining a subcarrier spacing of a reference time unit comprises: receiving first configuration signaling of the network-side device, wherein the first configuration signaling implicitly indicates or explicitly indicates the subcarrier spacing of the reference time unit determined by the network-side device.
19. 19 . The RO time-domain resource configuration method according to claim 14 , wherein the first information set comprises at least one of the following: a time unit number of an RO based on a reference time unit; a time unit number of a PRACH within a reference time unit; a sequence number of a PRACH time unit within a reference time unit; or RO configuration information of a preset frequency range.
20. 20 . A non-transitory computer readable storage medium storing a computer program or an instruction that, when executed by a processor, causes the processor to implement a Random access Occasion (RO) time-domain resource configuration method, comprising: obtaining a subcarrier spacing of a reference time unit determined according to a first rule; and determining, based on a first information set and the subcarrier spacing of the reference time unit, RO time-domain resource configuration information that is in each subframe and that is used for transmitting a random access preamble, wherein parameters of the first information set are obtained in at least one of the following manners: parameters configured by second configuration signaling; obtained by extending the parameters configured by the second configuration signaling; or obtained by extending the parameters predefined by the protocol.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2021/136021, filed on Dec. 7, 2021, which claims the priority of Chinese Patent Application No. 202011437862.2 filed on Dec. 7, 2020. The entire contents of each of the above-referenced applications are expressly incorporated herein by reference. TECHNICAL FIELD This application relates to the field of communications technologies, and in particular to an RO time-domain resource configuration method and apparatus and an electronic device. BACKGROUND A large Physical Random Access Channel (PRACH) Subcarrier Spacing (SCS) is introduced into the related art. According to a current protocol configuration, a subcarrier spacing of a reference slot of a Frequency Range (FR) 1 is 15 kHz, and a supported PRACH subcarrier spacing is {15, 30} kHz. A subcarrier spacing of a reference slot of an FR 2 is 60 kHz, and a supported PRACH subcarrier spacing is {60, 120} kHz. In a case that an SCS is greater than 120 kHz, even if a 60-kHz subcarrier spacing of a reference slot of the FR 2 is used, the number of PRACH slots within a reference slot exceeds 2. However, in an existing configuration table, the number of PRACH slots within a 60-kHz slot can only be 1 or 2, and cannot be used for a larger subcarrier spacing. Therefore, to follow Random access Occasion (RO) time-domain resource configuration of the FR 2, a reference slot and a parameter set of corresponding RO time-domain configuration need to be redesigned to support a larger PRACH subcarrier spacing. SUMMARY Embodiments of this application provide an RO time-domain resource configuration method and apparatus and an electronic device, to support a larger PRACH subcarrier spacing. According to a first aspect, an embodiment of this application provides an RO time-domain resource configuration method, performed by a terminal, and including: obtaining a subcarrier spacing of a reference time unit determined according to a first rule; anddetermining, based on a first information set and the subcarrier spacing of the reference time unit, RO time-domain resource configuration information that is in each subframe and that is used for transmitting a random access preamble, whereparameters of the first information set are obtained in at least one of the following manners:parameters configured by second configuration signaling;obtained by extending the parameters configured by the second configuration signaling;parameters predefined by a protocol; andobtained by extending the parameters predefined by the protocol. According to a second aspect, an embodiment of this application provides an RO time-domain resource configuration apparatus, including: an obtaining module, configured to obtain a subcarrier spacing of a reference time unit determined according to a first rule; anda processing module, configured to determine, based on a first information set and the subcarrier spacing of the reference time unit, RO time-domain resource configuration information that is in each subframe and that is used for transmitting a random access preamble, whereparameters of the first information set are obtained in at least one of the following manners:parameters configured by second configuration signaling;obtained by extending the parameters configured by the second configuration signaling;parameters predefined by a protocol; andobtained by extending the parameters predefined by the protocol. According to a third aspect, an embodiment of this application further provides an electronic device, including a processor, a memory, and a program or instructions stored in the memory and executable on the processor, where the program or instructions, when being executed by the processor, implement the steps of the foregoing method. According to a fourth aspect, an embodiment of this application provides a readable storage medium is this embodiment of this application, the provided, the readable storage medium storing a program or an instruction, where the program or instruction, when being executed by a processor, implements the steps of the foregoing method. According to a fifth aspect, an embodiment of this application provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to execute a program or instructions, to implement the method in the first aspect. According to a sixth aspect, a computer program product is provided, where the computer program product is stored in a non-volatile storage medium, where the computer program product is executed by at least one processor to implement the steps of the method in the first aspect. In embodiments of this application, a subcarrier spacing of a reference time unit determined according to a first rule is obtained, and then RO time-domain resource configuration information that is in each subframe and that is used for transmitting a random a