US2009201891A1

5G,4G,3G

Title

METHOD FOR AVOIDING COLLISION USING IDENTIFIER IN MOBILE NETWORK

Application Number:

WO2007KR00667

Publication Date:

13-08-2009

Current Assignee:

LG

Family ID:

38345560

Application Date:

23-04-2009

Publication Country:

US

View on Espacenet

Priority Date:

07-02-2006

Declaring Company:

INTERDIGITAL INC , LG

Abstract  Abstract

A method for transmitting radio resources in a mobile communication system is disclosed. The method includes receiving a random access channel (RACH) preamble from a plurality of UEs and transmitting response information associated with the received preambles over a common channel wherein the plurality UEs can access the common channel and receive corresponding information. If a HARQ scheme is used when a UE transmits data to the eNode-B using uplink radio resources allocated over the RACH the eNode-B does not pre-allocate uplink radio resources required for re-transmission and performs allocation of radio resources for a first transmission of HARQ. If the re-transmission is required the eNode-B allocates the radio resources required for the re-transmission with the NACK signal. If re-transmission is not required the present invention can reduce an amount of wasted radio resources.

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