IP Library Granted Patent US 11,582,713
Granted Patent B2
US 11,582,713 · App. 16/895,836 · Granted Feb 14, 2023

System information and paging monitoring for multiple synchronization signal blocks

Inventors: Kazuki Takeda (Tokyo, JP); Yan Zhou (San Diego, CA); Tao Luo (San Diego, CA); Sony Akkarakaran (Poway, CA); Konstantinos Dimou (San Francisco, CA); Seyed Ali Akbar Fakoorian (San Diego, CA); Mostafa Khoshnevisan (San Diego, CA); Hamed Pezeshki (San Diego, CA); Xiaoxia Zhang (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W68/02H04L1/1812H04W72/042H04W72/0413H04W74/0833
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Quick Facts
Patent No.
US 11,582,713
App. No.
16/895,836
Filed
Jun 8, 2020
Granted
Feb 14, 2023
Kind
B2
Art Unit
2476
USPC
370/329
Abstract

A configuration to enable a UE to select a new CSS set to use for monitoring for PDCCH based on changing conditions at the UE. The apparatus may receive, from a base station, a first indication of a search space for monitoring for a channel for at least one of system information, paging, or user data. A first set of monitoring occasions based on the search space indicated by the base station. The apparatus may determine a second set of monitoring occasions different than the first set of monitoring occasions based on a condition experienced by the apparatus. The apparatus may monitor for the channel based on the second set of monitoring occasions determined by the apparatus.

Claims (49)

1. A method of wireless communication at a user equipment (UE) operating in a connected mode, the method comprising:

receiving, from a base station, a first indication of a search space for monitoring a channel on a first set of monitoring occasions based on the search space for at least one of system information, paging, or user data;

determining a second set of monitoring occasions different than the first set of monitoring occasions based on a condition experienced by the UE; and

monitoring for the channel based on the second set of monitoring occasions determined by the UE prior to transmitting an indication of a change in the monitoring.

2. The method of claim 1 , wherein the search space is for monitoring for a control channel for at least one of the system information, the paging, or the user data.

3. The method of claim 1 , wherein the search space is for monitoring for a physical downlink shared channel (PDSCH) for semi-persistent scheduling (SPS).

4. The method of claim 1 , wherein the UE operates in a radio resource control (RRC) connected mode and monitors for a control channel based on the second set of monitoring occasions without an updated indication from the base station.

5. The method of claim 1 , wherein the condition comprises a first signal quality associated with the first set of monitoring occasions and a second signal quality associated with the second set of monitoring occasions.

6. The method of claim 5 , wherein the UE determines the second set of monitoring occasions based on at least one of the first signal quality associated with the first set of monitoring occasions being lower than a first threshold or the second signal quality associated with the second set of monitoring occasions being higher than a second threshold.

7. The method of claim 1 , wherein the condition comprises expiration of a timing alignment (TA) timer for a primary cell (PCell) or for a primary timing advance group (pTAG).

8. The method of claim 1 , wherein the condition comprises a number of Hybrid Automatic Repeat Request (HARQ) retransmissions for a HARQ process in a primary cell (PCell) exceeding a threshold.

9. The method of claim 1 , wherein the condition comprises a change in a quasi-co-location (QCL) assumption or a transmission configuration indication (TCI) state for reception of a downlink shared channel.

10. The method of claim 9 , wherein the UE performs the change in the QCL assumption or the TCI state for reception of the downlink shared channel based on determining negative feedback for the downlink shared channel.

11. The method of claim 1 , further comprising:

sending, to the base station, a second indication of changing to monitoring the second set of monitoring occasions.

12. The method of claim 11 , wherein the second indication is comprised in a medium access control (MAC) control element (CE).

13. The method of claim 11 , wherein the second indication is comprised in uplink control information (UCI).

14. The method of claim 11 , wherein the second indication comprises a change notification that indicates a change in monitoring occasions used by the UE.

15. The method of claim 11 , wherein the second indication indicates a synchronization signal block (SSB) associated with the second set of monitoring occasions determined by the UE.

16. The method of claim 15 , wherein the second indication comprises a message sent by the UE using a random access resource associated with the SSB associated with the second set of monitoring occasions determined by the UE.

17. A method of wireless communication at a base station, the method comprising:

sending, to a user equipment (UE) in a connected mode, a first indication of a search space for monitoring a channel on a first set of monitoring occasions based on the search space for at least one of system information, paging, or user data; and

receiving, from the UE, a second indication indicating a change in monitoring to a second set of monitoring occasions different than the first set of monitoring occasions after occurrence of the monitoring on the second set of monitoring occasions at the UE.

18. The method of claim 17 , wherein the search space is for monitoring for a control channel for at least one of the system information, the paging, or the user data.

19. The method of claim 17 , wherein the search space is for monitoring for a physical downlink shared channel (PDSCH) for semi-persistent scheduling (SPS).

20. The method of claim 17 , wherein the second indication comprises negative feedback for a downlink shared channel.

21. The method of claim 17 , wherein the second indication is comprised in a medium access control (MAC) control element (CE).

22. The method of claim 17 , wherein the second indication is comprised in uplink control information (UCI).

23. The method of claim 17 , wherein the second indication comprises a change notification that indicates a change in monitoring occasions for the UE.

24. The method of claim 17 , wherein the second indication indicates a synchronization signal block (SSB) associated with the second set of monitoring occasions.

25. The method of claim 24 , wherein the second indication comprises a message received from the UE using a random access resource associated with the SSB associated with the second set of monitoring occasions.

26. An apparatus for wireless communication at a user equipment (UE) operating in a connected mode, comprising:

a memory; and

at least one processor coupled to the memory and configured to:

receive, from a base station, a first indication of a search space for monitoring a channel on a first set of monitoring occasions based on the search space for at least one of system information, paging, or user data;

determine a second set of monitoring occasions different than the first set of monitoring occasions based on a condition experienced by the UE; and

monitor for the channel based on the second set of monitoring occasions determined by the UE prior to transmitting an indication of a change in the monitoring.

27. The apparatus of claim 26 , wherein search space is for monitoring for a control channel for at least one of the system information, the paging, or the user data.

28. The apparatus of claim 26 , wherein the search space is for monitoring for a physical downlink shared channel (PDSCH) for semi-persistent scheduling (SPS).

29. The apparatus of claim 26 , wherein the condition comprises at least one of:

a first signal quality associated with the first set of monitoring occasions and a second signal quality associated with the second set of monitoring occasions;

expiration of a timing alignment (TA) timer for a primary cell (PCell) or for a primary timing advance group (pTAG);

a number of Hybrid Automatic Repeat Request (HARQ) retransmissions for a HARQ process in a primary cell (PCell) exceeding a threshold; or

a change in a quasi-co-location (QCL) assumption or a transmission configuration indication (TCI) state for reception of a downlink shared channel.

30. An apparatus for wireless communication at a base station, comprising:

a memory; and

at least one processor coupled to the memory and configured to:

send, to a user equipment (UE) in a connected mode, a first indication of a search space for monitoring a channel on a first set of monitoring occasions based on the search space for at least one of system information, paging, or user data; and

receive, from the UE, a second indication indicating a change in monitoring to a second set of monitoring occasions different than the first set of monitoring occasions after occurrence of the monitoring on the second set of monitoring occasions at the UE.

Assignments (2)
CORRECTIVE ASSIGNMENT TO CORRECT THE THE 5TH INVENTORS NAME PREVIOUSLY RECORDED AT REEL: 055237 FRAME: 0049. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Dec 3, 2021
From: TAKEDA, KAZUKI; ZHOU, YAN; LUO, TAO; AKKARAKARAN, SONY; DIMOU, KONSTANTINOS; FAKOORIAN, SEYED ALI AKBAR; KHOSHNEVISAN, MOSTAFA; PEZESHKI, HAMED; ZHANG, XIAOXIA
To: QUALCOMM INCORPORATED
Reel/Frame 058303/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 11, 2021
From: TAKEDA, KAZUKI; ZHOU, YAN; LUO, TAO; AKKARAKARAN, SONY; DIMOU, KOSTANTINOS; FAKOORIAN, SEYED ALI AKBAR; KHOSHNEVISAN, MOSTAFA; PEZESHKI, HAMED; ZHANG, XIAOXIA
To: QUALCOMM INCORPORATED
Reel/Frame 055237/0049 →
Continuity (2)
Provisional Application 62871545 · Jul 8, 2019
Related Publication 20210014823A1 · Jan 14, 2021