US 9,326,314 B2 · Random access method and apparatus of UE in mobile communication system

Abstract

A method and an apparatus for performing random access and uplink transmission of a User Equipment (UE) supporting Carrier Aggregation (CA) are provided. The method includes determining whether a Scheduling Request (SR) is pending, determining, when the SR is pending, whether an uplink transmission resource is available in a current Transmission Time Interval (TTI), determining, when the uplink transmission resource is not available, whether a Physical Uplink Control Channel (PUCCH) resource is configured for transmission of the SR, and initiating, when the PUCCH resource is not configured, a random access process in a primary cell. The random access method and apparatus of the present invention is advantageous to reduce the waste of transmission resources.

Claims10

Dependent claims

A method of controlling uplink data transmission for a User Equipment (UE), comprising:

identifying whether preamble transmission is overlapped with a transmission of a Sounding Reference Symbol (SRS), the preamble transmission being requested in a first serving cell belonging to a first Timing Advance Group (TAG) and the SRS being for a second serving cell belonging to a second TAG;
and
determining whether dropping the SRS based on a transmission power of the UE if the preamble transmission is overlapped with the transmission of the SRS.

Dependencies are inferred from the claim text.

Facts

Application

14/313,298Filed 24 Jun 2014 · continuation

Priority

KR 10-2011-009740927 Sep 2011

Published

US 2014/0307670 A116 Oct 2014

Granted

26 Apr 2016

Term ends

Not estimatedThe source records don’t support an estimate.

Classification28 codes

H04W 72/21
Control channels or signalling for resource management: in the uplink direction of a wireless link, i.e. towards the network
H04L 1/0026
Characterised by the signalling: transmission of channel quality indication
H04L 5/001
The frequencies being orthogonal, e.g. OFDM or DMT: the frequencies being arranged in component carriers
H04L 5/0048
Arrangements for allocating sub-channels of the transmission path: allocation of pilot signals, i.e. of signals known to the receiver

Family

Application61/431,635Us provisional application · filed 11 Jan 2011

Application13/348,003Parent of this continuation · filed 11 Jan 2012

US 2014/0307670 A1Pre-grant publication · published 16 Oct 2014

US 8,761,047 B2Parent of this continuation

US 2012/0176967 A1Published application

US 9,288,834 B2Related patent

US 9,326,314 B2This patent

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

Random access method and apparatus of UE in mobile communication system

Life of this patent

Random access method and apparatus of UE in mobile communication system

Life of this patent

Abstract

Claims10