Beam switching for a multi-sim user equipment

Patent metadata

Field	Value
Publication number	US-2022095180-A1
Application number	US-202016948492-A
Country	US
Kind code	A1
Filing date	Sep 21, 2020
Priority date	Sep 21, 2020
Publication date	Mar 24, 2022
Grant date	—

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a base station, a beam measurement report associated with a serving beam of the UE. The UE may determine that a timer, relative to transmission of the beam measurement report, has expired. The UE may perform a measurement of one or more neighbor beams based at least in part on determining that the timer has expired. Numerous other aspects are provided.

First claim

What is claimed is:

1 . A method of wireless communication performed by a user equipment (UE), comprising:
transmitting, to a base station, a beam measurement report associated with a serving beam of the UE; determining that a timer, relative to transmission of the beam measurement report, has expired; and performing a measurement of one or more neighbor beams based at least in part on determining that the timer has expired.

2 . The method of claim 1 , wherein transmitting the beam measurement report comprises:
transmitting the beam measurement report based at least in part on mobility of the UE.

3 . The method of claim 1 , wherein determining that the timer has expired comprises:
determining, after transmitting the beam measurement report, that the timer has expired before any communication configuring beam measurements for the one or more neighbor beams is received from the base station.

4 . The method of claim 3 , wherein the UE is a multi-subscriber identification module (multi-SIM) device;
wherein the serving beam and the one or more neighbor beams are associated with a first subscription of the UE; and wherein determining that the timer has expired comprises:
determining that, during a countdown of the timer, a modem of the UE switched to processing a second subscription of the UE.

5 . The method of claim 1 , further comprising:
determining that a measurement of the serving beam does not satisfy a measurement threshold; and wherein performing the measurement of the one or more neighbor beams comprises:
performing the measurement of the one or more neighbor beams based at least in part on determining that the measurement of the serving beam does not satisfy the measurement threshold.

6 . The method of claim 1 , further comprising:
transmitting another beam measurement report to the base station,
wherein the other beam measurement report is associated with the measurement of the one or more neighbor beams;
determining that a quantity of beam failure instances on the serving beam satisfies a threshold prior to expiration of another timer relative to transmission of the other beam measurement report; and initiating a random access channel (RACH) procedure on a neighbor beam of the one or more neighbor beams based at least in part on determining that the quantity of beam failure instances satisfies the threshold.

7 . The method of claim 6 , wherein the other timer is associated with the UE and the base station being out of sync on the serving beam.

8 . The method of claim 6 , wherein determining that the other timer has expired comprises:
determining, after transmitting the other beam measurement report, that the other timer has expired before any communication associated with a beam switch procedure for the UE is received from the base station.

9 . The method of claim 1 , further comprising:
transmitting another beam measurement report to the base station,
wherein the other beam measurement report is associated with the measurement of the one or more neighbor beams; and
receiving, from the base station and based at least in part on transmitting the other beam measurement report, an indication to perform a beam switch procedure to switch from the serving beam to a neighbor beam of the one or more neighbor beams.

10 . A user equipment (UE) for wireless communication, comprising:
a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:
transmit, to a base station, a beam measurement report associated with a serving beam of the UE;
determine that a timer, relative to transmission of the beam measurement report, has expired; and
perform a measurement of one or more neighbor beams based at least in part on determining that the timer has expired.

11 . The UE of claim 10 , wherein the one or more processors, when transmitting the beam measurement report, are configured to:
transmit the beam measurement report based at least in part on mobility of the UE.

12 . The UE of claim 10 , wherein the one or more processors, when determining that the timer has expired, are configured to:
determine, after transmitting the beam measurement report, that the timer has expired before any communication configuring beam measurements for the one or more neighbor beams is received from the base station.

13 . The UE of claim 12 , wherein the UE is a multi-subscriber identification module (multi-SIM) device;
wherein the serving beam and the one or more neighbor beams are associated with a first subscription of the UE; and wherein the one or more processors, when determining that the timer has expired, are configured to:
determine that, during a countdown of the timer, a modem of the UE switched to processing a second subscription of the UE.

14 . The UE of claim 10 , wherein the one or more processors are further configured to:
determine that a measurement of the serving beam does not satisfy a measurement threshold; and wherein the one or more processors, when performing the measurement of the one or more neighbor beams, are configured to:
perform the measurement of the one or more neighbor beams based at least in part on determining that the measurement of the serving beam does not satisfy the measurement threshold.

15 . The UE of claim 10 , wherein the one or more processors are further configured to:
transmit another beam measurement report to the base station,
wherein the other beam measurement report is associated with the measurement of the one or more neighbor beams;
determine that a quantity of beam failure instances on the serving beam satisfies a threshold prior to expiration of another timer relative to transmission of the other beam measurement report; and initiate a random access channel (RACH) procedure on a neighbor beam of the one or more neighbor beams based at least in part on determining that the quantity of beam failure instances satisfies the threshold.

16 . The UE of claim 15 , wherein the other timer is associated with the UE and the base station being out of sync on the serving beam.

17 . The UE of claim 15 , wherein the one or more processors, when determining that the other timer has expired, are configured to:
determine, after transmitting the other beam measurement report, that the other timer has expired before any communication associated with a beam switch procedure for the UE is received from the base station.

18 . The UE of claim 10 , wherein the one or more processors are further configured to:
transmit another beam measurement report to the base station,
wherein the other beam measurement report is associated with the measurement of the one or more neighbor beams; and
receive, from the base station and based at least in part on transmitting the other beam measurement report, an indication to perform a beam switch procedure to switch from the serving beam to a neighbor beam of the one or more neighbor beams.

19 . A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to:
transmit, to a base station, a beam measurement report associated with a serving beam of the UE;
determine that a timer, relative to transmission of the beam measurement report, has expired; and
perform a measurement of one or more neighbor beams based at least in part on determining that

Assignees

• Qualcomm Inc

Inventors

• Sabapathi Karthikeyan
• Peruru Praveen
• Pantham Ramesh
• Pulicherla Narendra

Classifications

• H04W74/0833

  Random access procedures, e.g. with 4-step access · CPC title

• H04W36/0088 Primary

  Scheduling hand-off measurements · CPC title

• H04W36/06

  Reselecting a communication resource in the serving access point · CPC title

• H04W36/0094

  Definition of hand-off measurement parameters · CPC title

• H04W36/305

  Handover due to radio link failure (control signalling for hand-off failure H04W36/0079) · CPC title