US 2017/0374687 A1 · METHOD FOR INITIATING A RANDOM ACCESS PROCEDURE IN A CARRIER AGGREGATION SYSTEM AND A DEVICE THEREFOR

Abstract

The present invention relates to a wireless communication system. More specifically, the present invention relates to a method and a device for initiating a random access procedure in a carrier aggregation system, the method comprising: receiving, from a network, an Radio Resource Control (RRC) signal which configures a new Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource; checking whether a Time Alignment Timer (TAT) associated with a Timing Advance Group (TAG) to which the new SCell with the PUCCH resource belong is running or not; and initiating a random access procedure on the New SCell in the TAG if the associated TAT is not running.

Claims12

Dependent claims

A method for a User Equipment (UE) operating in a wireless communication system, the method comprising:

receiving, from a network, a Radio Resource Control (RRC) signal which configures a new Secondary Cell (SCell) with Physical Uplink Control Channel (PUCCH) resource;
checking whether a Time Alignment Timer (TAT) associated with a Timing Advance Group (TAG) to which the new SCell with the PUCCH resource belong is running or not;
and
initiating a random access procedure on the New SCell in the TAG, if the associated TAT is not running.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/535,786Filed 18 Jan 2016

Priority

20 Jan 2015

Published

28 Dec 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04W 74/0833
Non-scheduled access, e.g. ALOHA: random access procedures, e.g. with 4-step access
H04L 5/001
The frequencies being orthogonal, e.g. OFDM or DMT: the frequencies being arranged in component carriers
H04L 5/0053
Arrangements for allocating sub-channels of the transmission path: allocation of signalling, i.e. of overhead other than pilot signals
H04W 74/0891
Using a dedicated channel for access: for synchronized access

Method for initiating a random access procedure in a carrier aggregation system and a device therefor

Life of this patent

Method for initiating a random access procedure in a carrier aggregation system and a device therefor

Life of this patent

Abstract

Claims12