Systems and methods to adjust a sounding reference signal timing offset

Patent metadata

Field	Value
Publication number	US-12028816-B2
Application number	US-202117454414-A
Country	US
Kind code	B2
Filing date	Nov 10, 2021
Priority date	Nov 10, 2021
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A method of wireless communication performed by a user equipment (UE) includes: operating in a Dual SIM Dual Standby (DSDS) mode in which a first subscriber identity module (SIM) is designated as a default data subscription (DDS); transmitting a sounding reference signal (SRS) from a communication port of the UE, wherein the SRS has a timing offset assigned by a network associated with the first SIM; receiving paging messages from a network associated with a second SIM; determining an offset adjustment to avoid a collision between the SRS and the paging messages; sending a request to the network associated with the first SIM to adjust the timing offset according to the offset adjustment; and receiving an offset change configuration from the network associated with the first SIM.

First claim

What is claimed is:

1. A method of wireless communication performed by a user equipment (UE), the method comprising:
operating in a Dual SIM Dual Standby (DSDS) mode in which a first subscriber identity module (SIM) is designated as a default data subscription (DDS);
transmitting, while operating in the DSDS mode, a sounding reference signal (SRS) from a communication port of the UE, wherein the SRS has a timing offset assigned by a network associated with the first SIM;
receiving, while operating in the DSDS mode, paging messages from a network associated with a second SIM;
determining an offset adjustment to avoid a collision between the SRS and the paging messages, wherein determining the offset adjustment comprises determining that an occurrence of the SRS falls within a tune away period of radio frequency (RF) hardware shared by the first SIM and the second SIM;
sending, while operating in the DSDS mode, a request to the network associated with the first SIM to adjust the timing offset according to the offset adjustment to avoid the collision between the SRS and the paging messages; and
receiving, in response to the request to adjust the timing offset, an offset change configuration from the network associated with the first SIM.

2. The method of claim 1 , wherein determining the offset adjustment further includes calculating the offset adjustment to further avoid a collision between the SRS and measurement for an item selected from a list consisting of: reference signal received power (RSRP), received signal strength indicator (RSSI), and signal and interference to noise ratio (SINR).

3. The method of claim 1 , wherein the network associated with the first SIM and the network associated with the second SIM are a same network.

4. The method of claim 1 , wherein the network associated with the first SIM and the network associated with the second SIM are different networks.

5. The method of claim 1 , wherein sending the request to the network associated with the first SIM comprises:
transmitting a media access control (MAC) control element (CE) from the UE to the network associated with the first SIM, the MAC CE including an indication of the offset adjustment.

6. The method of claim 1 , further comprising:
subsequent to receiving the offset change configuration, transmitting the SRS according to the offset adjustment.

7. The method of claim 1 , wherein receiving the offset change configuration includes receiving a radio resource control (RRC) message reconfiguring the timing offset assigned by the network associated with the first SIM.

8. The method of claim 1 , wherein determining the offset adjustment further comprises:
determining that an occurrence of the SRS falls within a first-in-time half of the tune away period of the RF hardware shared by the first SIM and the second SIM; and
in response to determining that the occurrence of the SRS falls within the first-in-time half, determining to pre-pone the SRS.

9. The method of claim 1 , wherein determining the offset adjustment further comprises:
determining that an occurrence of the SRS falls within a second-in-time half of the tune away period of the RF hardware shared by the first SIM and the second SIM; and
in response to determining that the occurrence of the SRS falls within the second-in-time half, determining to postpone the SRS.

10. The method of claim 1 , wherein determining the offset adjustment further includes applying a function dependent upon a numerology applied by the first SIM.

11. A user equipment (UE) comprising:
a first subscriber identity module (SIM) associated with a first service provider subscription and a second SIM associated with a second service provider subscription;
a modem configured to interface with a base station;
one or more memories; and
one or more processors configured to interface with the modem and to access the first SIM and the second SIM, wherein the one or more processors are coupled to the one or more memories, the one or more memories storing instructions executable by the one or more processors, individually or in any combination, to cause the UE to:
operate in a Dual SIM Dual Standby (DSDS) mode in which the first SIM is in an active-mode and the second SIM is in an idle mode;
transmit, while operating in the DSDS mode, a sounding reference signal (SRS) from a communication port of the UE, wherein the SRS has a timing offset assigned by a network associated with the first SIM;
perform, while operating in the DSDS mode, signal measurement with respect to a signal received from a network associated with the second SIM;
determine an offset adjustment to avoid a collision between the SRS and the signal measurement, wherein determining the offset adjustment comprises determining that an occurrence of the SRS falls within a tune away period of radio frequency (RF) hardware shared by the first SIM and the second SIM;
send, while operating in the DSDS mode, a request to the network associated with the first SIM to adjust the timing offset according to the offset adjustment to avoid the collision between the SRS and the signal measurement; and
receive, in response to the request to adjust the timing offset, an offset change configuration from the network associated with the first SIM.

12. The UE of claim 11 , wherein the one or more memories store instructions that are executable by the one or more processors, individually or in any combination, to cause the UE to determine the offset adjustment to avoid colliding the SRS with a page decode associated with the second SIM.

13. The UE of claim 11 , wherein the one or more memories store instructions that are executable by the one or more processors, individually or in any combination, to cause the UE to determine the offset adjustment, including:
determining that an occurrence of the SRS falls within a first-in-time half of the tune away period of the RF hardware shared by the first SIM and the second SIM; and
in response to determining that the occurrence of the SRS falls within the first-in-time half, determining to pre-pone the SRS.

14. The UE of claim 11 , wherein the one or more memories store instructions that are executable by the one or more processors, individually or in any combination, to cause the UE to determine the offset adjustment, including:
determining that an occurrence of the SRS falls within a second-in-time half of the tune away period of the RF hardware shared by the first SIM and the second SIM; and
in response to determining that the occurrence of the SRS falls within the second-in-time half, determining to postpone the SRS.

15. The UE of claim 11 , wherein the signal measurement includes at least one of: a reference signal received power (RSRP), a received signal strength indicator (RSSI), or a signal and interference to noise ratio (SINR).

16. The UE of claim 11 , wherein the network associated with the first SIM and the network associated with the second SIM are a same network.

17. The UE of claim 11 , wherein the network associated with the first SIM and the network associated with the second SIM are different networks.

18. The UE of claim 11 , wherein one or more memories store instructions that are executable by the one or more processors, individually or in any combination, to cause the UE the modem is further configured to send the request to the network associated with the first SIM, including:
transmitting a media access control (MAC) control element (CE) to the network associated with the first SIM, the MAC CE including an indication of the offse

Assignees

• Qualcomm Inc

Inventors

• GODDETI Penchal Prasad
• Srivastava Akash
• Ananda Manjunatha Subbamma
• Palanisamy Santhana

Classifications

• H04W56/005

  compensating for timing error by adjustment in the receiver · CPC title

• H04W74/0858

  collision detection · CPC title

• H04W28/0294

  forcing collision (non-scheduled or contention based wireless access channel H04W74/08) · CPC title

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title

• H04W74/0825

  with collision detection · CPC title