US 2017/0288832 A1 · DYNAMIC SOUNDING REFERENCE SIGNAL SCHEDULING

Abstract

Methods, systems, and devices for wireless communication are described. A base station may identify a sounding reference signal (SRS) configuration for user equipment (UE). The base station may transmit an SRS grant message to a UE indicating the SRS configuration. An indication of SRS parameters may be included in the SRS grant message, and may include the SRS parameters or a location of the SRS parameters. That is, SRS parameters may be transmitted in a control channel with the SRS grant message or may be separately sent in a data channel as indicated by the indication of SRS parameters. In some cases, SRS parameters may be determined based on previously received UE feedback regarding channel conditions or power limitations. Alternatively, the base station may make its own environment measurements or assign SRS parameters autonomously. The UE may signal SRS transmissions to the base station according to the SRS grant message.

Claims30

Dependent claims

A method for wireless communication, comprising:

receiving, at a user equipment (UE), a sounding reference signal (SRS) grant message from a base station, the SRS grant message based at least in part on an identified SRS configuration, the SRS grant message comprising an indication of SRS parameters;
receiving, at the UE, downlink control information (DCI), wherein information in the DCI contradicts the indication of SRS parameters in the SRS grant message;
determining to ignore information received at the UE based at least in part on the SRS grant message and the DCI;
and
transmitting, to the base station, one or more SRS transmissions based at least in part on the determination.

2 more elements

An apparatus for wireless communication, in a system comprising:

a processor;
memory in electronic communication with the processor;
and
instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:
receive, at a user equipment (UE), a sounding reference signal (SRS) grant message from a base station, the SRS grant message based at least in part on an identified SRS configuration, the SRS grant message comprising an indication of SRS parameters;
receive, at the UE, downlink control information (DCI), wherein information in the DCI contradicts the indication of SRS parameters in the SRS grant message;
determine to ignore information received at the UE based at least in part on the SRS grant message and the DCI;
and
transmit, to the base station, one or more SRS transmissions based at least in part on the determination.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/357,791Filed 21 Nov 2016

Priority

4 Apr 2016

Published

5 Oct 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 5/0048
Arrangements for allocating sub-channels of the transmission path: allocation of pilot signals, i.e. of signals known to the receiver
H04W 52/36
Using constraints in the total amount of available transmission power: with a discrete range or set of values, e.g. step size, ramping or offsets
H04W 72/04
Local resource management: wireless resource allocation
H04W 88/02
Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices: terminal devices

Family

Application62/318,190Us provisional application · filed 4 Apr 2016

Application62/325,948Us provisional application · filed 21 Apr 2016

Application62/337,329Us provisional application · filed 16 May 2016

Application62/351,285Us provisional application · filed 16 Jun 2016

Application62/353,493Us provisional application · filed 22 Jun 2016

US 10,447,444 B2Related patent

US 2017/0288832 A1This patent

From the US filing history. Foreign family members aren’t listed.

Dynamic sounding reference signal scheduling

Life of this patent

Dynamic sounding reference signal scheduling

Life of this patent

Abstract

Claims30