US 8,284,709 B2Granted

Method of controlling relay communication

AssigneeLG Electronics Inc.

InventorsAe Ran Youn, Ki Seon Ryu, Du Hyun Mun, Beom Joon Kim

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method for reporting a channel status in a mobile communication system including a relay station (RS) is provided. When a mobile terminal in the coverage of a base station (BS) receives a service through an RS, the RS reports a channel status between the RS and the terminal to the BS to allow the BS to decide whether or not to communicate with the terminal through the RS. In the method, a first RS in communication with a BS and at least one terminal measures a channel quality with a first terminal and compares the measured channel quality with a threshold and transmits a report message to the BS according to the comparison. The report message is to request the BS to measure a channel quality of at least one of a second RS and the first terminal in communication with the BS.

Claims5

Dependent claims

A relay communication control method, the method comprising:

transmitting, by a base station (BS), an uplink MAP message to allocate an uplink channel to a mobile station (MS);
receiving, by the BS, a ranging request message during a ranging procedure;
obtaining, by the BS, first information regarding a channel condition between the BS and the MS based on a transmission status of the ranging request message;
transmitting, by the BS, a report request message to request information of a channel condition between the a relay station (RS) and the MS;
receiving, by the BS, a report response message in response to the report request message, the report response message comprising second information regarding the channel condition between the RS and the MS;
comparing the first information to the second information in order to compare the channel condition between the BS and the MS with the channel condition between the RS and the MS;
and
performing direct communication with the MS or relay communication with the RS according to a result of the comparison,
wherein the second information is acquired by monitoring the uplink channel allocated to the MS.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/093,128Filed 13 Nov 2006
Priority: KR 10-2005-010825011 Nov 2005
Published: US 2009/0219852 A13 Sep 2009
Granted: 9 Oct 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04W 16/26
Cell structures: cell enhancers or enhancement, e.g. for tunnels, building shadow
H04W 36/30
Reselection being triggered by specific parameters: by measured or perceived connection quality data
H04W 40/22
Communication route or path selection, e.g. power-based or shortest path routing: using selective relaying for reaching a BTS [Base Transceiver…
H04B 7/14
Radio transmission systems, i.e. using radiation field: relay systems