Method for controlling of radio resource and mobile telecommunication system for the same

• US 8,385,935 B2
• Filed: 02/09/2010
• Issued: 02/26/2013
• Est. Priority Date: 02/26/2009
• Status: Expired due to Fees

• Current Assignee: LG-Ericsson Company Limited (Telefonaktiebolaget LM Ericsson)
• Original Assignee: LG-Ericsson Company Limited (Telefonaktiebolaget LM Ericsson)
• Inventors: Shin, Hong Sup, Lim, Yong Hoon
• Primary Examiner(s): Lee, John J
• Application Number:
  US12/702,741
• Publication Number:
  US 20100216394A1
• Time in Patent Office: 1,113 Days
• Field of Search: 455/7, 455/452.2, 455/452.1, 455/450, 455/509, 455/24, 455/67.11, 455/67.13, 455/63.1, 455/69, 455/68, 455/115.1, 455/115.3, 455/126
• US Class Current: 455/452.2
• CPC Class Codes: H04B 17/40 of relay systems
• CPC Class Codes: H04B 7/15585 by interference cancellation

Abstract

A method for measuring a self-interference (SI) which occurs in a relay and controlling radio resources of a base station based on the measured SI, and a mobile telecommunication system using the same. The mobile telecommunication system includes a relay which calculates intensity of SI; and a base station which performs radio resource management based on the calculated SI intensity. The method for measuring SI includes calculating intensity of SI using a relay; and performing radio resource management at a base station based on the calculated SI intensity.

Claims

1. A mobile telecommunication system comprising:

a base station; and

a relay that determines intensity of self-interference (SI) and reports the determined SI intensity to the base station, wherein the base station performs radio resource management based on information on the SI intensity reported by the relay, wherein the base station allocates and transmits a predetermined resource block (RB), with no signal loaded thereon, to allow the relay to determine the SI intensity information, and wherein the relay determines the SI intensity based on a difference between an intensity of a first signal received and measured with no signal loaded on the RB and an intensity of a second signal measured at a receiving part with a signal loaded on the RB.

2. A mobile telecommunication system comprising:

a base station; and

a relay that determines intensity of self-interference (SI) and provides the SI intensity to the base station, wherein the base station performs radio resource management based on information on the SI intensity provided by the relay, wherein the relay determines the SI intensity using a channel through which the base station transmits a signal at a predetermined period for channel measurement, channel quality indicator (CQI) measurement and feedback.

3. The mobile telecommunication system according to claim 2, wherein the relay determines the SI intensity based on a difference between an intensity of a signal measured with no signal transmitted and an intensity of a signal measured with a signal transmitted.

4. The mobile telecommunication system according to claim 3, wherein the information on the SI intensity is a measured value.

5. The mobile telecommunication system according to claim 4, wherein the relay transmits the information on the SI intensity at the predetermined period via a measurement report channel.

6. The mobile telecommunication system according to claim 5, wherein the base station transmits the information on the SI intensity to the relay at the predetermined period via a Layer 3 signaling.

7. The mobile telecommunication system according to claim 6, wherein the information on the SI intensity is a result value obtained by comparison between the measured value and a threshold of the SI intensity.

8. A relay of a mobile telecommunication system, wherein the relay calculates intensity of self-interference (SI) based on a difference between intensity of a first signal received and measured with no signal loaded on a resource block (RB) allocated by a base station and intensity of a second signal measured at a receiving part with a signal loaded on the RB, and reports information on the calculated SI intensity to the base station.

9. The relay according to claim 8, wherein the base station allocates a predetermined resource block (RB), with no signal loaded thereon, to allow the relay to calculate the SI intensity, and performs radio resource management based on the information on the SI intensity reported by the relay.

10. A method for controlling radio resources, the method comprising:

determining, at a relay, intensity of self-interference (SI) and providing the determined SI intensity from the relay to a base station; and

performing radio resource management at the base station based on information on the SI reported by the relay, wherein the base station allocates and transmits a predetermined resource block (RB), with no signal loaded thereon, to allow the relay to determine the SI intensify information, and

wherein the relay determines the SI intensity based on a difference between an intensity of a first signal received and measured with no signal loaded on the RB and an intensity of a second signal measured at a receiving part with a signal loaded on the RB, and the relay transmits information on the SI intensity to the base station.

11. The method according to claim 10, wherein a base station channel used by the relay to determine the information on the SI intensity is a reference signal (RS) channel.

12. The method according to claim 11, wherein the information on the SI intensity includes at least one of a measured value and a result value obtained by comparison between the measured value and a threshold of the SI intensity.

13. The method according to claim 12, wherein the relay transmits the information on the SI intensity at the predetermined period via a measurement report channel.

14. The method according to claim 13, wherein the base station transmits the information on the SI intensity to the relay at the predetermined period via Layer 3 signaling.

15. A method for controlling radio resources, the method comprising:

determining intensity of self-interference (SI) and providing the SI intensity from a relay to a base station; and

performing radio resource management at the base station based on information on the SI reported by the relay, wherein the relay determines the SI intensity using a channel through which the base station transmits a signal at a predetermined period for channel measurement, channel quality indicator (CQI) measurement and feedback, and the relay transmits information on the SI intensity to the base station.