RELAY STATION AND METHOD OF OPERATING RELAY STATION IN MULTI-HOP COMMUNICATION SYSTEM

• US 20130273836A1
• Filed: 06/11/2013
• Published: 10/17/2013
• Est. Priority Date: 04/03/2008
• Status: Active Grant

• Current Assignee: Industry Academic Cooperation Foundation, Samsung Electronics Co. Ltd.
• Original Assignee: Industry Academic Cooperation Foundation, Samsung Electronics Co. Ltd.
• Inventors: LIM, Sung Gook, SO, Jung Min, DO, Mi Sun, LEE, Jai Yong
• Granted Patent: US 8,982,729 B2
• Time in Patent Office: Days
• US Class Current: 455/7
• CPC Class Codes: H04B 7/15 Active relay systems
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence

Abstract

A replay station and a method of operating the relay station in a multi-hop communication system are provided. A method of operating a relay station of a multi-hop communication system includes monitoring a delay of the relay station, determining whether the monitored delay exceeds a predetermined threshold, and controlling the relay station to be handed over to another upper relay station that is different from a connecting upper relay station.

Claims

1. A relay station comprising:

an information receiver to receive, from at least one upper relay station performing multi-hop communication with a base station, end-to-end delay information and hop-count information between the base station and the at least one upper relay station;

a selector to select a connection target relay station from the at least one upper relay station based on the hop-count information and the end-to-end delay information; and

a connection controller to control the relay station to connect with the connection target relay station.

2. The relay station as claimed in claim 1, wherein where the relay station is within the coverage of the base station, the selector selects the base station as the connection target relay station.

3. The relay station as claimed in claim 1, wherein the selector selects, as the connection target relay station, an upper relay station with minimum hop counts to the base station, from the at least one upper relay station, and

where at least two upper relay stations with the minimum hop counts exist, the selector selects, from the at least two upper relay stations with the minimum hop counts, an upper relay station with minimum end-to-end delay to the base station as the connection target relay station.

4. The relay station as claimed in claim 1, further comprising:

an information generator to generate end-to-end delay information and hop-count information to the base station; and

a broadcasting unit to broadcast a broadcast message including the generated hop-count information and end-to-end delay information.