US 8,948,088 B2 · Method for transmitting a sounding reference signal in a wireless communication system, and apparatus for same

Abstract

The present invention relates to a method in which user equipment transmits a non-periodic sounding reference signal in a wireless communication system. In detail, the method comprises: a step of receiving a downlink control channel from a base station; a step of decoding a downlink control information (DCI) format contained in the downlink control channel; a step of checking a non-periodic sounding reference signal transmission instruction in the DCI format; and a step of transmitting a non-periodic sounding reference signal to the base station in accordance with the transmission instruction. Preferably, if the downlink control channel is received via an nth subframe, the non-periodic sounding reference signal is transmitted via an (n+k)th subframe (where k≦4).

Claims4

Dependent claims

A method for transmitting an aperiodic sounding reference signal (SRS) at a user equipment in a time division duplex (TDD) communication system, the method comprising:

receiving at least one parameter of the aperiodic SRS through an RRC (Radio Resource Control) layer;
receiving downlink control information (DCI) including a request of the aperiodic SRS, wherein the downlink control information includes information for receiving downlink data using multiple antennas by the user equipment;
and
transmitting the aperiodic SRS to the base station according to the request.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/497,293Filed 20 Sep 2010 · us provisional application

Priority

21 Sep 2009

Published

US 2012/0281625 A18 Nov 2012

Granted

3 Feb 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 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
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals
H04L 5/14
Arrangements affording multiple use of the transmission path: two-way operation using the same type of signal, i.e. duplex
H04L 5/1469
Two-way operation using the same type of signal, i.e. duplex: using time-sharing

Family

Application61/244,424Us provisional application · filed 21 Sep 2009

Application61/310,712Us provisional application · filed 5 Mar 2010

Application61/316,820Us provisional application · filed 23 Mar 2010

US 2012/0281625 A1Pre-grant publication · published 8 Nov 2012

US 8,948,088 B2This patent

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

Method for transmitting a sounding reference signal in a wireless communication system, and apparatus for same

Life of this patent

Method for transmitting a sounding reference signal in a wireless communication system, and apparatus for same

Life of this patent

Abstract

Claims4