IP Library › Granted Patent US 12700981
Granted Patent B2
US 12700981 · App. 18/482,303 · Granted Aug 4, 2026

Collision handling for sub-band full duplex aware user equipment

Inventors: Muhammad Sayed Khairy Abdelghaffar (San Jose, CA); Qian Zhang (Basking Ridge, NJ); Abdelrahman Mohamed Ahmed Mohamed Ibrahim (San Diego, CA); Yan Zhou (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04L5/14H04W48/12
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12700981
App. No.
18/482,303
Granted
Aug 4, 2026
Kind
B2
Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication that a network node is operating in a sub-band full duplex mode in a set of symbols. The UE may identify whether to receive at least one of a synchronization signal block communication or a physical downlink control channel communication associated with a common search space in the set of symbols based at least in part on the indication. Numerous other aspects are described.

Claims (57)

1 . A user equipment (UE) for wireless communication, comprising:

one or more memories; and

one or more processors, coupled to the one or more memories, configured to:

receive an indication that a network node is operating in a sub-band full duplex (SBFD) mode in a set of symbols; and

identify whether to receive at least one of a synchronization signal block (SSB) communication or a physical downlink control channel (PDCCH) communication associated with a common search space (CSS) in the set of symbols based at least in part on the indication.

2 . The UE of claim 1 , wherein the one or more processors are further configured to receive the indication via at least one of a broadcast message or a radio resource control message.

3 . The UE of claim 1 , wherein the one or more processors are further configured to receive configuration information indicating that the set of symbols is associated with an uplink slot.

4 . The UE of claim 3 , wherein the one or more processors are further configured to receive the at least one of the SSB communication or the PDCCH communication associated with the CSS based at least in part on the configuration information indicating that the set of symbols is associated with the uplink slot.

5 . The UE of claim 3 , wherein the one or more processors are further configured to refrain from receiving the at least one of the SSB communication or the PDCCH communication associated with the CSS based at least in part on the configuration information indicating that the set of symbols is associated with the uplink slot.

6 . The UE of claim 1 , wherein the one or more processors are further configured to receive the at least one of the SSB communication or the PDCCH communication associated with the CSS based at least in part on the at least one of the SSB communication or the PDCCH communication associated with the CSS being associated with a serving cell.

7 . The UE of claim 1 , wherein the one or more processors are further configured to refrain from receiving the SSB communication or the PDCCH communication associated with the CSS based at least in part on the at least one of the SSB communication or the PDCCH communication associated with the CSS being transmitted outside an SSB measurement timing configuration window associated with a serving cell.

8 . The UE of claim 1 , wherein the one or more processors are further configured to receive at least one of configuration information or downlink control information (DCI) scheduling an uplink transmission in the set of symbols.

9 . The UE of claim 8 , wherein the one or more processors are further configured to receive the at least one of the SSB communication or the PDCCH communication associated with the CSS in the set of symbols, and refrain from transmitting the uplink transmission in the set of symbols, based at least in part on the at least one of the configuration information or the DCI scheduling the uplink transmission in the set of symbols.

10 . The UE of claim 8 , wherein the one or more processors are further configured to receive the at least one of the SSB communication or the PDCCH communication associated with the CSS in the set of symbols, and refrain from transmitting the uplink transmission in the set of symbols, based at least in part on the at least one of the SSB communication or the PDCCH communication associated with the CSS being associated with a serving cell.

11 . The UE of claim 8 , wherein the one or more processors are further configured to transmit the uplink transmission in the set of symbols, and refrain from receiving the at least one of the SSB communication or the PDCCH communication associated with the CSS in the set of symbols, based at least in part on the at least one of the SSB communication or the PDCCH communication associated with the CSS being transmitted outside an SSB measurement timing configuration window associated with a serving cell.

12 . The UE of claim 8 , wherein the one or more processors are further configured to:

receive configuration information indicating that the set of symbols is associated with an uplink slot; and

transmit the uplink transmission in the set of symbols, and refrain from receiving the at least one of the SSB communication or the PDCCH communication associated with the CSS in the set of symbols, based at least in part on the configuration information indicating that the set of symbols is associated with the uplink slot.

13 . A user equipment (UE) for wireless communication, comprising:

one or more memories; and

one or more processors, coupled to the one or more memories, configured to:

receive an indication that a network node is operating in a sub-band full duplex (SBFD) mode in a set of symbols;

receive configuration information indicating that the set of symbols is associated with a downlink slot; and

identify, based at least in part on the indication and the configuration information, that an error case has occurred or that a communication is to be transmitted in a random access channel (RACH) occasion (RO) associated with the set of symbols.

14 . The UE of claim 13 , wherein the one or more processors are further configured to receive the indication via at least one of a broadcast message or a radio resource control message.

15 . The UE of claim 13 , wherein the one or more processors are further configured to transmit the communication in the RO based at least in part on the configuration information indicating that the set of symbols is associated with the downlink slot.

16 . The UE of claim 13 , wherein the one or more processors are further configured to transmit the communication in the RO based at least in part on the communication being associated with a contention based random access procedure.

17 . The UE of claim 13 , wherein the one or more processors are further configured to transmit the communication in the RO based at least in part on the communication being associated with a contention free random access procedure.

18 . The UE of claim 13 , wherein the one or more processors are further configured to:

treat the set of symbols as flexible symbols; and

transmit the communication in the RO.

19 . The UE of claim 13 , wherein the one or more processors are further configured to receive at least one of configuration information or downlink control information (DCI) scheduling a downlink transmission in the set of symbols.

20 . The UE of claim 19 , wherein the one or more processors are further configured to transmit the communication in the RO associated with the set of symbols, and refrain from receiving the downlink transmission in the set of symbols, based at least in part on the at least one of configuration information or the DCI scheduling the downlink transmission in the set of symbols.

21 . The UE of claim 19 , wherein the one or more processors are further configured to receive the downlink transmission in the set of symbols, and refrain from transmitting the communication in the RO associated with the set of symbols, based at least in part on the UE not having a random access communication to transmit in the set of symbols.

22 . The UE of claim 19 , wherein the one or more processors are further configured to transmit the communication in the RO associated with the set of symbols, and refrain from receiving the downlink transmission in the set of symbols, based at least in part on the UE having a random access communication to transmit in the set of symbols.

23 . The UE of claim 19 , wherein the one or more processors are further configured to receive the downlink transmission in the set of symbols, and refrain from transmitting the communication in the RO associated with the set of symbols, based at least in part on the set of symbols being associated with a monitoring occasion associated with a physical downlink control channel communication.

24 . A method of wireless communication performed by a user equipment (UE), comprising:

receiving an indication that a network node is operating in a sub-band full duplex (SBFD) mode in a set of symbols; and

identifying whether to receive at least one of a synchronization signal block (SSB) communication or a physical downlink control channel (PDCCH) communication associated with a common search space (CSS) in the set of symbols based at least in part on the indication.

25 . The method of claim 24 , further comprising:

receiving configuration information indicating that the set of symbols is associated with an uplink slot; and

receiving the at least one of the SSB communication or the PDCCH communication associated with the CSS based at least in part on the configuration information indicating that the set of symbols is associated with the uplink slot.

26 . The method of claim 24 , further comprising:

receiving configuration information indicating that the set of symbols is associated with an uplink slot; and

receiving the at least one of the SSB communication or the PDCCH communication associated with the CSS based at least in part on the at least one of the SSB communication or the PDCCH communication associated with the CSS being associated with a serving cell.

27 . The method of claim 24 , further comprising:

receiving configuration information indicating that the set of symbols is associated with an uplink slot; and

refraining from receiving the SSB communication or the PDCCH communication associated with the CSS based at least in part on the at least one of the SSB communication or the PDCCH communication associated with the CSS being transmitted outside an SSB measurement timing configuration window associated with a serving cell.

28 . The method of claim 24 , further comprising:

receiving configuration information indicating that the set of symbols is associated with an uplink slot; and

refraining from receiving the at least one of the SSB communication or the PDCCH communication associated with the CSS based at least in part on the configuration information indicating that the set of symbols is associated with the uplink slot.

29 . A method of wireless communication performed by a user equipment (UE), comprising:

receiving an indication that a network node is operating in a sub-band full duplex (SBFD) mode in a set of symbols;

receiving configuration information indicating that the set of symbols is associated with a downlink slot; and

identifying, based at least in part on the indication and the configuration information, that an error case has occurred or that a communication is to be transmitted in a random access channel (RACH) occasion (RO) associated with the set of symbols.

30 . The method of claim 29 , further comprising:

transmitting the communication in the RO based at least in part on the configuration information indicating that the set of symbols is associated with the downlink slot.