IP Library › Granted Patent US 12707408
Granted Patent B2
US 12707408 · App. 17/869,277 · Granted Aug 11, 2026

Priority-based timing advance (TA) adjustment

Inventors: Mohamad Sayed Hassan (Paris, FR); Lianghai Ji (San Diego, CA); Liangping Ma (San Diego, CA); Jun Ma (San Diego, CA); Qiang Wu (San Diego, CA); Huilin Xu (Temecula, CA); Weimin Duan (San Diego, CA); Mehmet Izzet Gurelli (San Diego, CA); Karthik Anantha Swamy (La Jolla, CA)
Assignee: QUALCOMM Incorporated
H04W56/0045H04B17/318
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Quick Facts
Patent No.
US 12707408
App. No.
17/869,277
Granted
Aug 11, 2026
Kind
B2
Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a message indicating a time domain window (TDW) configuration including a start time of a TDW and a length of the TDW, where the TDW is a duration over which a network entity is scheduled to perform joint channel estimation. The UE may receive a timing advance (TA) command during the TDW indicating a TA value to apply to signaling. The UE may transmit the signaling in accordance with the TA value or independent of the TA value based on the UE prioritizing the TA adjustment or maintaining power consistency and phase continuity for DMRS bundling, respectively. The UE may determine whether to prioritize the TA adjustment or DMRS bundling for the joint channel estimation based on one or more parameters satisfying criteria.

Claims (128)

1 . An apparatus for wireless communication at a user equipment (UE), comprising:

one or more memories; and

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

receive a first message that indicates a time domain window configuration comprising a start of a time domain window and a length of the time domain window, the time domain window configuration associated with joint channel estimation for the UE;

measure a reference signal receive power associated with one or more reference signals;

receive, during the time domain window and based at least in part on the time domain window configuration, a second message comprising a timing advance command, wherein the timing advance command indicates a timing advance value for the UE; and

transmit, during the time domain window, a third message in accordance with the timing advance value based at least in part on satisfaction of one or more criteria by one or more parameters associated with the UE, wherein the one or more parameters comprise the measured reference signal receive power, and wherein the one or more criteria comprise a reference signal receive power threshold.

2 . The apparatus of claim 1 , wherein, to transmit the third message, the one or more processors are configured to cause the UE to:

transmit the third message according to a transmission time that is shifted in time based at least in part on the timing advance value.

3 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

receive a control message that indicates the one or more criteria, wherein the third message is transmitted based at least in part on the control message.

4 . The apparatus of claim 3 , wherein, to receive the control message, the one or more processors are configured to cause the UE to:

receive a radio resource control message, a medium access control-control element, or downlink control information.

5 . The apparatus of claim 1 , wherein:

the one or more parameters comprise the timing advance value; and

the one or more criteria comprise a timing advance threshold.

6 . The apparatus of claim 1 , wherein:

the one or more parameters comprise an elevation angle between the UE and a network entity; and

the one or more criteria comprise an elevation angle threshold.

7 . The apparatus of claim 1 , wherein:

the one or more parameters comprise a duration of the time domain window; and

the one or more criteria comprise a time domain window threshold duration.

8 . The apparatus of claim 1 further comprising one or more antennas, wherein the one or more processors are further configured to cause the UE to:

transmit, prior to the time domain window, a report comprising the measured reference signal receive power.

9 . The apparatus of claim 1 , wherein:

the one or more parameters comprise a cell type; and

the one or more criteria comprise one or more cell types comprising the cell type.

10 . The apparatus of claim 1 , wherein the UE operates in a non-terrestrial network.

11 . An apparatus for wireless communication at a user equipment (UE), comprising:

one or more memories; and

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

receive a first message that indicates a time domain window configuration comprising a start of a time domain window and a length of the time domain window, the time domain window configuration associated with joint channel estimation for the UE;

measure a reference signal receive power associated with one or more reference signals;

receive, during the time domain window and based at least in part on the time domain window configuration, a second message comprising a timing advance command, wherein the timing advance command indicates a timing advance value for the UE; and

transmit, during the time domain window, a third message independent of the timing advance value based at least in part on satisfaction of one or more criteria by one or more parameters associated with the UE, wherein the one or more parameters comprise the measured reference signal receive power, and wherein the one or more criteria comprise a reference signal receive power threshold.

12 . The apparatus of claim 11 , wherein, to transmit the third message, the one or more processors are configured to cause the UE to:

maintain a transmit power, a phase continuity, or both across one or more uplink channel transmissions, wherein the third message comprises the one or more uplink channel transmissions; and

refrain from shifting a transmission time for the third message in accordance with the timing advance value.

13 . The apparatus of claim 11 , wherein the one or more processors are further configured to cause the UE to:

receive a control message that indicates the one or more criteria, wherein the third message is transmitted based at least in part on the control message.

14 . The apparatus of claim 13 , wherein, to receive the control message, the one or more processors are configured to cause the UE to:

receive a system information block message, downlink control information, a medium access control-control element, or a radio resource control message.

15 . The apparatus of claim 11 , wherein:

the one or more parameters comprise the timing advance value; and

the one or more criteria comprise a timing advance threshold.

16 . The apparatus of claim 11 , wherein:

the one or more parameters comprise an elevation angle between the UE and a network entity; and

the one or more criteria comprise an elevation angle threshold.

17 . The apparatus of claim 11 , wherein:

the one or more parameters comprise a duration of the time domain window; and

the one or more criteria comprise a time domain window threshold duration.

18 . The apparatus of claim 11 further comprising one or more antennas, wherein the one or more processors are further configured to cause the UE to:

transmit, prior to the time domain window, a report comprising the measured reference signal receive power.

19 . The apparatus of claim 11 , wherein:

the one or more parameters comprise a cell type; and

the one or more criteria comprise one or more cell types comprising the cell type.

20 . The apparatus of claim 11 , wherein the UE operates in a non-terrestrial network.

21 . An apparatus for wireless communication at a network entity, comprising:

one or more memories; and

one or more processors coupled with the one or more memories and configured to cause the network entity to:

output a first message that indicates a time domain window configuration comprising a start of a time domain window and a length of the time domain window, the time domain window configuration associated with joint channel estimation for a user equipment (UE);

output, during the time domain window and based at least in part on the time domain window configuration, a second message comprising a timing advance command, wherein the timing advance command indicates a timing advance value for the UE; and

obtain, during the time domain window, a third message in accordance with the timing advance value based at least in part on satisfaction of one or more criteria by one or more parameters associated with the UE, wherein the one or more parameters comprise a measured reference signal receive power, and wherein the one or more criteria comprise a reference signal receive power threshold.

22 . The apparatus of claim 21 , wherein, to obtain the third message, the one or more processors are configured to cause the network entity to:

obtain the third message according to a transmission time that is shifted in time based at least in part on the timing advance value.

23 . The apparatus of claim 21 , wherein the one or more processors are further configured to cause the network entity to:

output a control message that indicates the one or more criteria, wherein the third message is obtained based at least in part on the control message.

24 . The apparatus of claim 23 , wherein, to output the control message, the one or more processors are configured to cause the UE to:

output a radio resource control message, a medium access control-control element, or downlink control information.

25 . The apparatus of claim 21 , wherein:

the one or more parameters comprise the timing advance value; and

the one or more criteria comprise a timing advance threshold.

26 . The apparatus of claim 21 , wherein:

the one or more parameters comprise an elevation angle between the UE and the network entity; and

the one or more criteria comprise an elevation angle threshold.

27 . The apparatus of claim 21 , wherein:

the one or more parameters comprise a duration of the time domain window; and

the one or more criteria comprise a time domain window threshold duration.

28 . The apparatus of claim 21 further comprising one or more antennas, wherein the one or more processors are further configured to cause the network entity to:

obtain, prior to the time domain window, a report comprising the measured reference signal receive power.

29 . The apparatus of claim 21 , wherein:

the one or more parameters comprise a cell type; and

the one or more criteria comprise one or more cell types comprising the cell type.

30 . An apparatus for wireless communication at a network entity, comprising:

one or more memories; and

one or more processors coupled with the one or more memories and configured to cause the network entity to:

output a first message that indicates a time domain window configuration comprising a start of a time domain window and a length of the time domain window, the time domain window configuration associated with joint channel estimation for a user equipment (UE);

output, during the time domain window and based at least in part on the time domain window configuration, a second message comprising a timing advance command, wherein the timing advance command indicates a timing advance value for the UE; and

obtain, during the time domain window, a third message independent of the timing advance value based at least in part on satisfaction of one or more criteria by one or more parameters associated with the UE, wherein the one or more parameters comprise a measured reference signal receive power, and wherein the one or more criteria comprise a reference signal receive power threshold.

31 . The apparatus of claim 30 , wherein, to obtain the third message independent of the timing advance value, the one or more processors are configured to cause the network entity to:

perform a joint channel estimation procedure across two or more uplink channel transmissions, wherein the third message comprises the two or more uplink channel transmissions.

32 . The apparatus of claim 30 , wherein the one or more processors are further configured to cause the network entity to:

output a control message that indicates the one or more criteria, wherein the third message is obtained based at least in part on the control message.

33 . A method for wireless communications by a user equipment (UE), comprising:

receiving a first message indicating a time domain window configuration comprising a start of a time domain window and a length of the time domain window, the time domain window configuration associated with joint channel estimation for the UE;

measuring a reference signal receive power associated with one or more reference signals;

receiving, during the time domain window and based at least in part on the time domain window configuration, a second message comprising a timing advance command, the timing advance command indicating a timing advance value for the UE; and

transmitting, during the time domain window, a third message in accordance with the timing advance value based at least in part on satisfaction of one or more criteria by one or more parameters associated with the UE, wherein the one or more parameters comprise the measured reference signal receive power, and wherein the one or more criteria comprise a reference signal receive power threshold.

34 . The method of claim 33 , the transmitting comprising:

transmitting the third message according to a transmission time that is shifted in time based at least in part on the timing advance value.

35 . The method of claim 33 , further comprising:

receiving a control message indicating the one or more criteria, wherein the third message is transmitted based at least in part on the control message.

36 . A method for wireless communications by a user equipment (UE), comprising:

receiving a first message indicating a time domain window configuration comprising a start of a time domain window and a length of the time domain window, the time domain window configuration associated with joint channel estimation for the UE;

measuring a reference signal receive power associated with one or more reference signals;

receiving, during the time domain window and based at least in part on the time domain window configuration, a second message comprising a timing advance command, the timing advance command indicating a timing advance value for the UE; and

transmitting, during the time domain window, a third message independent of the timing advance value based at least in part on satisfaction of one or more criteria by one or more parameters associated with the UE, wherein the one or more parameters comprise the measured reference signal receive power, and wherein the one or more criteria comprise a reference signal receive power threshold.

37 . The method of claim 36 , the transmitting comprising:

maintaining a transmit power, a phase continuity, or both across one or more uplink channel transmissions, wherein the third message comprises the one or more uplink channel transmissions; and

refraining from shifting a transmission time for the third message in accordance with the timing advance value.

38 . The method of claim 36 , further comprising:

receiving a control message indicating the one or more criteria, wherein the third message is transmitted based at least in part on the control message.

39 . A method for wireless communications by a network entity, comprising:

outputting a first message indicating a time domain window configuration comprising a start of a time domain window and a length of the time domain window, the time domain window configuration associated with joint channel estimation for a user equipment (UE);

outputting, during the time domain window and based at least in part on the time domain window configuration, a second message comprising a timing advance command, the timing advance command indicating a timing advance value for the UE; and

obtaining, during the time domain window, a third message in accordance with the timing advance value based at least in part on satisfaction of one or more criteria by one or more parameters associated with the UE, wherein the one or more parameters comprise a measured reference signal receive power, and wherein the one or more criteria comprise a reference signal receive power threshold.

40 . The method of claim 39 , the obtaining comprising:

obtaining the third message according to a transmission time that is shifted in time based at least in part on the timing advance value.

41 . The method of claim 39 , further comprising:

outputting a control message indicating the one or more criteria, wherein the third message is obtained based at least in part on the control message.

42 . A method for wireless communications by a network entity, comprising:

outputting a first message indicating a time domain window configuration comprising a start of a time domain window and a length of the time domain window, the time domain window configuration associated with joint channel estimation for a user equipment (UE);

outputting, during the time domain window and based at least in part on the time domain window configuration, a second message comprising a timing advance command, the timing advance command indicating a timing advance value for the UE; and

obtaining, during the time domain window, a third message independent of the timing advance value based at least in part on satisfaction of one or more criteria by one or more parameters associated with the UE, wherein the one or more parameters comprise a measured reference signal receive power, and wherein the one or more criteria comprise a reference signal receive power threshold.

43 . The method of claim 42 , the obtaining comprising:

performing a joint channel estimation procedure across two or more uplink channel transmissions, wherein the third message comprises the two or more uplink channel transmissions.

44 . The method of claim 42 , further comprising:

outputting a control message indicating the one or more criteria, wherein the third message is obtained based at least in part on the control message.