IP Library Granted Patent US 12,672,142
Granted Patent B2
US 12,672,142 · App. 18/184,116 · Granted Jun 30, 2026

User equipment collision handling for multiple transmission-reception point scheduling

Inventors: Ahmed Abdelaziz Ibrahim Abdelaziz Zewail (San Diego, CA); Jing Sun (San Diego, CA); Mostafa Khoshnevisan (San Diego, CA); Xiaoxia Zhang (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W72/20H04L5/0035H04W72/12
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Quick Facts
Patent No.
US 12,672,142
App. No.
18/184,116
Filed
Mar 15, 2023
Granted
Jun 30, 2026
Kind
B2
Art Unit
2454
USPC
370/329
Abstract

Systems, devices, and methods for handling scheduling collisions or conflicts in multi-transmission reception point (mTRP) communication scenarios are provided. A UE may receive indications for communicating two or more communications that would exceed or violate a UE capability or limitation. For example, a method of wireless communication performed by a UE comprises: receiving, from a first network node, a first mDCI indicating a first reserved resource; receiving, from a second network node, a second mDCI indicating a second reserved resource; refraining, based on the first reserved resource, the second reserved resource, and a capability of the UE, from communicating a first communication in the first reserved resource; communicating a second communication in the second reserved resource; and transmitting, based on the refraining, an indication that the UE did not communicate the first communication.

Claims (116)

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

receiving, from a first network node, a first multi-downlink control information (mDCI) scheduling a first communication associated with a first transmit receive point (TRP) in a first reserved resource;

receiving, from a second network node, a second mDCI scheduling a second communication associated with a second TRP in a second reserved resource;

detecting a collision or a conflict between the first communication and the second communication based on a capability of the UE to receive or transmit a plurality of communications that overlap in at least one of time or frequency;

refraining, based on detecting the collision or the conflict, from communicating the first communication in the first reserved resource;

communicating the second communication in the second reserved resource; and

transmitting, based on the refraining, an indication that the UE did not communicate the first communication.

2 . The method of claim 1 ,

wherein the plurality of communications comprises a plurality of unicast physical downlink shared channel (PDSCH) transmissions, and

wherein the capability of the UE comprises a capability of the UE to receive the plurality of unicast PDSCH transmissions.

3 . The method of claim 2 ,

wherein the capability of the UE to receive the plurality of unicast PDSCH transmissions comprises at least one of:

a capability of the UE to receive the plurality of unicast PDSCH transmissions that overlap in time;

a total received PDSCH rank capability;

a per-PDSCH transmission rank capability;

a capability of the UE to receive the plurality of unicast PDSCH transmissions that overlap in frequency;

a capability for total received PDSCH transport block (TB) during a time period; or

a per-PDSCH transmission TB capability.

4 . The method of claim 1 ,

wherein the plurality of communications comprises a plurality of physical uplink control channel (PUCCH) transmissions, and

wherein the capability of the UE comprises a capability of the UE to transmit the plurality of PUCCH transmissions.

5 . The method of claim 4 ,

wherein the capability of the UE to transmit the plurality of PUCCH transmissions comprises at least one of:

a capability of the UE to transmit the plurality of PUCCH transmissions that overlap in time; or

a capability of the UE to transmit a PUCCH transmission, of the plurality of PUCCH transmissions, and a physical uplink shared channel (PUSCH) transmission that overlap in time.

6 . The method of claim 1 ,

wherein the plurality of communications comprises a plurality of physical uplink shared channel (PUSCH) transmissions, and

wherein the capability of the UE comprises a capability of the UE to transmit the plurality of PUSCH transmissions.

7 . The method of claim 6 ,

wherein the capability of the UE to transmit the plurality of PUSCH transmissions comprises at least one of:

a capability of the UE to transmit the plurality of PUSCH transmissions that overlap in time;

a capability of the UE to transmit the plurality of PUSCH transmissions that overlap in frequency; or

a total PUSCH transmission rank capability.

8 . The method of claim 1 ,

wherein transmitting the indication comprises:

transmitting the indication to the first network node.

9 . The method of claim 1 ,

wherein transmitting the indication comprises:

transmitting at least one of a non-acknowledgement (NACK) associated with the first communication, or a media access control-control element (MAC-CE) associated with the first communication.

10 . The method of claim 9 ,

wherein the indication comprises the NACK, the NACK indicating a scheduling collision for at least the first reserved resource at the UE.

11 . A method of wireless communication performed by a first network node, the method comprising:

transmitting, to a user equipment (UE), a first multi-downlink control information (mDCI) scheduling a first communication associated with a first transmit receive point (TRP) in a first reserved resource;

receiving, from the UE, an indication associated with the first communication colliding or conflicting with a second communication associated with a second reserved resource and a second network node, wherein the indication is received based at least in part on a capability of the UE to receive or transmit a plurality of communications that overlap in at least one of time or frequency; and

initiating, based on the indication, a temporary change in a mode of operation of the first network node to reduce scheduling collisions at the UE.

12 . The method of claim 11 ,

wherein initiating the temporary change in the mode of operation of the first network node comprises:

initiating a backoff window for scheduling communications with the UE.

13 . The method of claim 11 ,

wherein initiating the temporary change in the mode of operation of the first network node comprises:

adjusting a communication operating mode or a communication operating condition of the first network node to reduce scheduling collisions at the UE.

14 . The method of claim 11 ,

wherein receiving the indication comprises:

receiving at least one of a non-acknowledgement (NACK) associated with the first communication, or a media access control-control element (MAC-CE) associated with the first communication.

15 . The method of claim 14 ,

wherein the indication comprises the NACK, the NACK indicating the first communication colliding or conflicting with the second communication at the UE.

16 . A user equipment (UE), comprising:

one or more memories; and

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

receive, from a first network node, a first multi-downlink control information (mDCI) scheduling a first communication associated with a first transmit receive point (TRP) in a first reserved resource;

receive, from a second network node, a second mDCI scheduling a second communication associated with a second TRP in a second reserved resource;

detect a collision or a conflict between the first communication and the second communication based on a capability of the UE to receive or transmit a plurality of communications that overlap at least one of time or frequency;

refrain, based on detecting the collision or the conflict, from communicating the first communication in the first reserved resource;

communicate the second communication in the second reserved resource; and

transmit, based on the refraining, an indication that the UE did not communicate the first communication.

17 . The UE of claim 16 ,

wherein the plurality of communications comprises a plurality of unicast physical downlink shared channel (PDSCH) transmissions, and

wherein the capability of the UE comprises a capability of the UE to receive the plurality of unicast PDSCH transmissions.

18 . The UE of claim 17 ,

wherein the capability of the UE to receive the plurality of unicast PDSCH transmissions comprises at least one of:

a capability of the UE to receive the plurality of unicast PDSCH transmissions that overlap in time;

a total received PDSCH rank capability;

a per-PDSCH transmission rank capability;

a capability of the UE to receive the plurality of unicast PDSCH transmissions that overlap in frequency;

a capability for total received PDSCH transport block (TB) during a time period; or

a per-PDSCH transmission TB capability.

19 . The UE of claim 16 ,

wherein the plurality of communications comprises a plurality of physical uplink control channel (PUCCH) transmissions, and

wherein the capability of the UE comprises a capability of the UE to transmit the plurality of PUCCH transmissions.

20 . The UE of claim 19 ,

wherein the capability of the UE to transmit the plurality of PUCCH transmissions comprises at least one of:

a capability of the UE to transmit the plurality of PUCCH transmissions that overlap in time; or

a capability of the UE to transmit a PUCCH transmission, of the plurality of PUCCH transmissions, and a physical uplink shared channel (PUSCH) transmission that overlap in time.

21 . The UE of claim 16 ,

wherein the capability of the UE is associated with receiving or transmitting a plurality of transmissions, and

wherein the capability of the UE comprises a capability of the UE to transmit the plurality of PUSCH transmissions.

22 . The UE of claim 21 ,

wherein the capability of the UE to transmit the plurality of PUSCH transmissions comprises at least one of:

a capability of the UE to transmit the plurality of PUSCH transmissions that overlap in time;

a capability of the UE to transmit the plurality of PUSCH transmissions that overlap in frequency; or

a total PUSCH transmission rank capability.

23 . The UE of claim 16 ,

wherein, to transmit the indication, the one or more processors are configured to cause the UE to:

transmit the indication to the first network node.

24 . The UE of claim 16 ,

wherein, to transmit the indication, the one or more processors are configured to cause the UE to:

transmit at least one of a non-acknowledgement (NACK) associated with the first communication, or a media access control-control element (MAC-CE) associated with the first communication.

25 . The UE of claim 24 ,

wherein the indication comprises the NACK, the NACK indicating a scheduling collision for at least the first reserved resource at the UE.

26 . A first network node, comprising:

one or more memories; and

one or more processors, coupled to the one or more memories, configured to cause the first network node to:

transmit, to a user equipment (UE), a first multi-downlink control information (mDCI) scheduling a first communication associated with a first transmit receive point (TRP) in a first reserved resource;

receive, from the UE, an indication associated with the first communication colliding or conflicting with a second communication associated with a second reserved resource and a second network node, wherein the indication is received based at least in part on a capability of the UE to receive or transmit a plurality of communications that overlap in at least one of time or frequency; and

initiate, based on the indication, a temporary change in a mode of operation of the first network node to reduce scheduling collisions at the UE.

27 . The first network node of claim 26 ,

wherein, to initiate the temporary change in the mode of operation of the first network node, the one or more processors are configured to cause the first network node to:

initiate a backoff window for scheduling communications with the UE.

28 . The first network node of claim 26 ,

wherein, to initiate the temporary change in the mode of operation of the first network node, the one or more processors are configured to cause the first network node to:

adjust a communication operating mode or a communication operating condition of the first network node to reduce scheduling collisions at the UE.

29 . The first network node of claim 26 ,

wherein, to receive the indication, the one or more processors are configured to cause the first network node to:

receive at least one of a non-acknowledgement (NACK) associated with the first communication, or a media access control-control element (MAC-CE) associated with the first communication.

30 . The first network node of claim 29 ,

wherein the indication comprises the NACK, the NACK indicating the first communication colliding or conflicting with the second communication at the UE.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 28, 2023
From: ZEWAIL, AHMED ABDELAZIZ IBRAHIM ABDELAZIZ; SUN, JING; KHOSHNEVISAN, MOSTAFA; ZHANG, XIAOXIA
To: QUALCOMM INCORPORATED
Reel/Frame 063136/0574 →
Continuity (1)
Related Publication 20240314785A1 · Sep 19, 2024
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