Granted Patent B2

US 12,279,218 · App. 17/598,239 · Granted Apr 15, 2025

Inventors: Chunhai Yao (Beijing, CN); Chunxuan Ye (Beijing, CA); Dawei Zhang (Cupertino, CA); Haijing Hu (Cupertino, CA); Haitong Sun (Cupertino, CA); Hong He (Cupertino, CA); Oghenekome Oteri (Cupertino, CA); Sarma V. Vangala (Cupertino, CA); Sigen Ye (Cupertino, CA); Wei Zeng (Cupertino, CA); Weidong Yang (Cupertino, CA); Yushu Zhang (Cupertino, CA)

Assignee: Apple Inc.

H04W56/0045H04B7/1851H04W72/0446H04W72/1268H04W74/0833

Abstract

Claims (56)

1. A base station comprising a processor configured to perform the operations comprising:

determining a timing advance based on at least a random access preamble reception;

determining an uplink offset based on the timing advance, wherein the uplink offset is set equal to a sum of a service link time advance and a feeder link time advance, divided by a slot duration;

determining a candidate slot for an uplink reception based on at least the offset;

determining if the candidate slot is available for the uplink reception;

using the candidate slot for the uplink reception when the candidate uplink slot is available; and

using the next available slot for the uplink reception when the candidate uplink slot is not available.

2. The base station of claim 1 , wherein the uplink reception comprises a Physical Uplink Shared Channel (PUSCH), Random Access Response (RAR) scheduled by PUSCH, Physical Uplink Control Channel (PUCCH), or aperiodic SRS.

3. The base station of claim 1 , wherein the determining if the candidate slot is available comprises:

determining if the candidate slot is an uplink slot, a downlink slot, a hybrid slot or a flexible slot based on at least the Time Division Duplex (TDD) configuration of the candidate slot format, wherein the candidate slot is available when the candidate slot is one of an uplink slot or a hybrid slot with the uplink reception corresponding to uplink symbols in the hybrid slot and the candidate slot is unavailable when the candidate slot is one of a downlink slot, a hybrid slot with the uplink reception not corresponding to uplink symbols in the hybrid slot, or a flexible slot.

4. The base station of claim 1 , wherein the uplink offset is a measure of a delay of a non-terrestrial network link.

5. The base station of claim 1 , wherein the determining of the uplink offset comprises:

computing the uplink offset based on at least a time advance of one or more satellite links in a non-terrestrial network.

6. The base station of claim 1 , wherein the processor is further configured to perform the operation:

computing a Medium Access Control (MAC) Control Element (CE) action timing using at least the uplink offset.

7. The base station of claim 1 , wherein the processor is further configured to perform the operation:

computing a time gap between a last Physical Sidelink Feedback Channel (PSFCH) reception and Physical Uplink Control Channel (PUCCH) transmission using a sidelink offset.

8. The base station of claim 7 , wherein the sidelink offset has a different value than the uplink offset.

9. The base station of claim 1 , wherein the processor is further configured to perform the operation:

computing a time domain offset for a type 1 configured grant configuration using at least the uplink offset.

10. A user equipment (UE) comprising a processor configured to perform the operations comprising:

receiving, from a base station, timing advance information;

determining an offset based on the timing advance information, wherein the offset is set equal to a sum of a service link time advance and a feeder link time advance, divided by a slot duration;

determining a candidate slot for a Channel State Information (CSI) reference resource based on at least the offset;

determining if the candidate slot is available for the CSI reference resource;

using the candidate slot for the CSI reference resource when the candidate slot is available; and

using another slot for the CSI reference resource when the candidate slot is not available.

11. The UE of claim 10 , wherein the determining comprises:

determining if the candidate slot is an uplink slot, a downlink slot, a hybrid slot or a flexible slot based on at least the Time Division Duplex (TDD) configuration of the candidate slot format, wherein the candidate slot is available if the candidate slot is one of a downlink slot or a hybrid slot with the downlink reception corresponding to downlink symbols in the hybrid slot and the candidate slot is unavailable if the candidate slot is one of an uplink slot, a hybrid slot with the downlink reception not corresponding to downlink symbols in the hybrid slot, or a flexible slot.

12. The UE of claim 10 , wherein the offset is a measure of a delay of a non-terrestrial network link.

13. The UE of claim 10 , wherein the another available CSI reference resource is a previous slot of the candidate slot.

14. The UE of claim 10 , wherein the another available CSI reference resource is a next slot of the candidate slot.

15. A baseband processor configured to perform operations comprising:

receiving, from a base station, timing advance information;

determining an offset based on the timing advance information, wherein the offset is set equal to a sum of a service link time advance and a feeder link time advance, divided by a slot duration;

determining a candidate slot for a Channel State Information CSI reference resource based on at least the offset;

determining if the candidate slot is available;

using the candidate slot for the CSI reference resource when the candidate slot is available; and

using the another slot for the CSI reference resource when the candidate slot is not available.

16. The baseband processor of claim 15 , wherein the determining comprises:

determining if the candidate slot is an uplink slot, a downlink slot, a hybrid slot or a flexible slot based on at least the Time Division Duplex (TDD) configuration of the candidate slot format, wherein the candidate slot is available when the candidate slot is one of an uplink slot or a hybrid slot and the candidate slot is unavailable when the candidate slot is one of a downlink slot a hybrid slot or a flexible slot.

17. The baseband processor of claim 15 , wherein the offset is a measure of a delay of a non-terrestrial network link.

18. A base station comprising a processor configured to perform the operations comprising:

determining a timing advance based on at least a random access preamble reception;

determining an uplink offset based on the timing advance;

determining a candidate slot for an uplink reception based on at least the offset;

determining if the candidate slot is available for the uplink reception;

using the candidate slot for the uplink reception when the candidate uplink slot is available; and

using the next available slot for the uplink reception when the candidate uplink slot is not available, wherein where the next available slot is one of a previous slot of the candidate slot or a next slot of the candidate slot.

19. A user equipment (UE) comprising a processor configured to perform the operations comprising:

receiving, from a base station, timing advance information;

determining an offset based on the timing advance information;

determining a candidate slot for a Channel State Information (CSI) reference resource based on at least the offset;

determining if the candidate slot is available for the CSI reference resource;

using the candidate slot for the CSI reference resource when the candidate slot is available; and

using another slot for the CSI reference resource when the candidate slot is not available, wherein the another slot for the CSI reference resource is one of a previous slot of the candidate slot or a next slot of the candidate slot.

Assignments (1)

Continuity (1)

References Cited (81)