US 2019/0319824 A1 · SRS CARRIER SWITCHING WITH STTI/SPT

Abstract

Sounding reference signal (SRS) carrier switching with short transmission time interval (sTTI)/short processing time (sPT) is discussed. A user equipment (UE) with aggregated communications including multiple time division duplex (TDD) downlink-only configured carriers may be triggered for sounding reference signal (SRS) carrier switching via a downlink control signal. The UE determines whether there are any other signals colliding or that may conflict with its transmission of SRS on a new carrier and resolves any apparent collision or conflict using a combination of signal, timing, or processing configuration prioritization. The SRS may be transmitted when conditions allow the UE to tune to the other carrier and tune back before any higher priority transmissions are scheduled.

Claims30

Dependent claims

A method of wireless communication, comprising:

receiving, by a user equipment (UE), a sounding reference signal (SRS) trigger for SRS carrier switching from a first carrier to a downlink-configured second carrier for an SRS transmission at a designated subframe;
determining, by the UE, whether there are any additional signals scheduled for the UE to transmit on the first carrier that overlap with the SRS transmission;
resolving, by the UE in response to detection of a first additional signal scheduled on the designated subframe, a collision between the SRS transmission and the first additional signal to identify a first scheduled transmission for the designated subframe;
and
transmitting, by the UE, one or more of the SRS transmission or the first additional signal according to results of the resolving.

2 more elements

An apparatus configured for wireless communication, the apparatus comprising:

at least one processor;
and
a memory coupled to the at least one processor,
wherein the at least one processor is configured to cause the apparatus:
to receive, by a user equipment (UE), a sounding reference signal (SRS) trigger for SRS carrier switching from a first carrier to a downlink-configured second carrier for an SRS transmission at a designated subframe;
to determine, by the UE, whether there are any additional signals scheduled for the UE to transmit on the first carrier that overlap with the SRS transmission;
to resolve, by the UE in response to detection of a first additional signal scheduled on the designated subframe, a collision between the SRS transmission and the first additional signal to identify a first scheduled transmission for the designated subframe;
and
to transmit, by the UE, one or more of the SRS transmission or the first additional signal according to results of the resolving.

6 more elements

Dependencies are inferred from the claim text.

Srs carrier switching with stti/spt

Life of this patent

Srs carrier switching with stti/spt

Life of this patent

Abstract

Claims30