BR-112025005363-B1 - User equipment, network entity, and related methods.

Abstract

USER EQUIPMENT, NETWORK ENTITY, AND RELATED METHODS. Several aspects of this disclosure relate to methods, devices, and systems that support configuration for secondary link transmission. The disclosure, for example, describes ways to determine the secondary link transmission offset as a function of the secondary link transmission priority. For example, the secondary link transmission offset can be determined as a positive offset value of a symbol boundary time and/or a negative offset value of a symbol boundary time.

Inventors

• Alexander Golitschek Edler Von Elbwart
• Karthikeyan Ganesan
• Joachim Löhr
• Prateek Basu Mallick

Assignees

• LENOVO (SINGAPORE) PTE. LTD

Dates

Publication Date

20260310

Application Date

20230925

Priority Date

20220926

Claims (19)

1. 1. User equipment (UE) for wireless communication, characterized in that it comprises: at least one memory; and at least one processor coupled with the at least one memory and operable to make the UE: determine whether a secondary link resource is reserved; determine a first initial transmission time offset as a non-zero value based at least in part on the determination that the secondary link resource is reserved; and transmit a transmission through the secondary link resource and at a first time instant, wherein the first time instant is based at least in part on a symbol boundary time instant and the first initial transmission time offset, and wherein the first initial transmission time offset is based at least in part on a first transmission priority.
2. 2. EU, according to claim 1, characterized by the fact that the secondary link feature occurs in unlicensed spectrum.
3. 3. EU, according to claim 1, characterized in that the symbol boundary comprises a slot boundary.
4. 4. EU, according to claim 1, characterized in that the first initial transmission time offset for the first transmission priority is less than a second transmission time offset for a second transmission priority, and in that the first transmission priority is greater than the second transmission priority.
5. 5. UE, according to claim 1, characterized in that at least one processor is operable to perform the UE: determine whether the first transmission priority exceeds a transmission priority threshold; and determine the first initial transmission time offset as a non-zero value based, at least in part, on the determination that the first transmission priority exceeds the transmission priority threshold.
6. 6. UE, according to claim 1, characterized in that at least one processor is operable to cause the UE to implement the first initial transmission time offset using a cyclic prefix extension if the first initial transmission time offset has a negative value.
7. 7. UE, according to claim 1, characterized in that at least one processor is operable to cause the UE to perform a free channel evaluation for the secondary link resource before transmitting the broadcast over the secondary link resource.
8. 8. UE, according to claim 1, characterized in that at least one processor is operable to cause the UE to determine the first transmission priority based, at least in part, on a group of resources for the secondary link resource.
9. 9. UE, according to claim 1, characterized in that at least one processor is operable to cause the UE to transmit the broadcast over the secondary link resource and at the first time instant based, at least in part, on a failure of a free channel evaluation at a second time instant and a success of a free channel evaluation at the first time instant.
10. 10. UE, according to claim 1, characterized in that at least one processor is operable to cause the UE to determine the first instant of time as occurring before the symbol boundary instant.
11. 11. UE, according to claim 1, characterized in that at least one processor is operable to cause the UE to receive a notification to apply the first initial transmission time offset based, at least in part, on the first transmission priority.
12. 12. Network entity for wireless communication, characterized in that it comprises: at least one memory; and at least one processor coupled with the at least one memory and operable to make the network entity: transmit a notification comprising one or more transmission priorities for secondary link transmissions, one or more transmission time offsets to be applied to one or more secondary link transmissions associated with one or more transmission priorities, and an indication that when a secondary link resource for a secondary link transmission is reserved, a transmission time offset is a non-zero value.
13. 13. Network entity, according to claim 12, characterized in that the notification indicates that one or more transmission priorities and one or more transmission time offsets should be applied to one or more secondary link transmissions in unlicensed spectrum.
14. 14. Network entity, according to claim 12, characterized in that the notification comprises a first transmission priority associated with a first transmission time offset and a second transmission priority associated with a second transmission time offset; the first transmission priority is greater than the second transmission priority; and the first transmission time offset is less than the second transmission time offset.
15. 15. Network entity, according to claim 12, characterized in that the notification is transmitted to a first device, and wherein the notification further comprises an indication that when a secondary link resource for a secondary link transmission is determined to be reserved by a second device, the first device must determine a transmission time offset as a non-zero value.
16. 16. Network entity, according to claim 12, characterized in that the notification is transmitted to a first device, and wherein the notification further comprises an indication that when a transmission priority exceeds a transmission priority threshold, the first device must determine a transmission time offset as a non-zero value.
17. 17. Network entity, according to claim 12, characterized in that the notification additionally comprises an indication to implement at least one transmission time offset using a cyclic prefix extension.
18. 18. A method performed by a user equipment (UE), the method characterized in that it comprises: determining whether a secondary link resource is reserved; determining a first initial transmission time offset as a non-zero value based at least in part on a determination that the secondary link resource is reserved; and transmitting a transmission over the secondary link resource and at a first time instant, wherein the first time instant is based at least in part on a symbol boundary time instant and the first initial transmission time offset, and wherein the first initial transmission time offset is based at least in part on a first transmission priority.
19. 19. A method implemented by a network entity, characterized by the fact that it comprises: transmitting a notification comprising one or more transmission priorities for secondary link transmissions, one or more transmission time offsets to be applied to one or more secondary link transmissions associated with the one or more transmission priorities, and an indication that when a secondary link resource for a secondary link transmission is reserved, a transmission time offset is a non-zero value.

Description

RELATED REQUEST [001] This application claims priority over U.S. Provisional Application Serial No. 63/409,949, filed September 26, 2022, entitled “CONFIGURATION OF SIDELINK TRANSMISSION”, the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD [002] This disclosure relates to wireless communications and, more specifically, to secondary link transmission in wireless communications. BACKGROUND [003] A wireless communications system may include one or multiple network communication devices, such as base stations, which may also be known as eNodeB (eNB), a next-generation NodeB (gNB), or other suitable terminology. Each network communication device, such as a base station, may support wireless communications to one or multiple user communication devices, which may be known as user equipment (UE) or other suitable terminology. The wireless communication system can support wireless communication with one or multiple user communication devices using wireless communication system features (e.g., timing features (e.g., symbols, slots, subframes, frames, or the like) or frequency features (e.g., subcarriers, carriers). Furthermore, the wireless communication system can support wireless communication through various radio access technologies, including third-generation (3G) radio access technology, fourth-generation (4G) radio access technology, fifth-generation (5G) radio access technology, and other suitable radio access technologies besides 5G (e.g., sixth generation (6G)). [004] Some wireless communication systems provide techniques for secondary link transmissions on unlicensed carrier frequencies. However, such techniques may not be able to take into account transmission priority for secondary link transmissions. SUMMARY [005] This disclosure relates to methods, apparatus, and systems that support configuration for secondary link transmission. The disclosure, for example, describes ways of determining the secondary link transmission offset as a function of the secondary link transmission priority. For example, the secondary link transmission offset can be determined as a positive offset value of a symbol boundary time and/or a negative offset value of a symbol boundary time. [006] By using the techniques described, secondary link frequency resources (e.g., in unlicensed spectrum) can be used more efficiently, while at the same time reducing signal interference on such secondary link frequency resources. [007] Some implementations of the methods and devices described herein may additionally include generating, in a first device, a transmission; and transmitting, by the first device, the transmission by means of a secondary link resource and at a first instant of time, the first instant of time determined from a symbol boundary time instant and a first initial transmission time offset, and the first initial transmission time offset is determined based, at least in part, on a first transmission priority for the transmission. [008] Some implementations of the methods and devices described herein may additionally include where the secondary link resource occurs in unlicensed spectrum; the symbol boundary includes a slot boundary; the first initial transmission time offset for the first transmission priority is less than a second transmission time offset for a second transmission priority, and where the first transmission priority is greater than the second transmission priority; including additionally determining whether the secondary link resource is reserved by a second device; and determining the first initial transmission time offset as a non-zero value based, at least in part, on a determination that the secondary link resource is reserved by a different device; including additionally determining whether the first transmission priority exceeds a transmission priority threshold; and determining the first initial transmission time offset as a non-zero value based, at least in part, on a determination that the first transmission priority exceeds the transmission priority threshold. [009] Some implementations of the methods and devices described herein may additionally include implementing the first initial transmission time offset using a cyclic prefix extension if the first initial transmission time offset has a negative value; additionally including performing a free channel evaluation for the secondary link resource before transmitting the transmission over the secondary link resource; additionally including determining the first transmission priority based, at least in part, on a resource group for the secondary link resource; additionally including transmitting the transmission over the secondary link resource and at the first time instant based, at least in part, on a failure of a free channel evaluation at a second time instant and a success of a free channel evaluation at the first time instant; additionally including determining the first time instant as occurring befo