RESOURCE ALLOCATION METHOD FOR BACKHAUL LINK AND ACCESS LINK IN A WIRELESS COMMUNICATION SYSTEM INCLUDING RELAY

• US 20110128893A1
• Filed: 07/31/2009
• Published: 06/02/2011
• Est. Priority Date: 08/01/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Eun Jong, Cho, Han Kyo, Sung, Doo Hyun, Chung, Jae Hoon, Park, Kyu Jin
• Granted Patent: US 8,848,580 B2
• Time in Patent Office: Days
• US Class Current: 370/279
• CPC Class Codes: H04B 7/14 Relay systems
• CPC Class Codes: H04B 7/155 Ground-based stations H04B7/204 takes precedence
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1861 Physical mapping arrangements for ACK signaling see also H04L5/0053
• CPC Class Codes: H04L 2001/0097 Relays
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 16/12 Fixed resource partitioning
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

A resource allocation method of a relay station in a wireless communication system employing the relay station is provided. The method includes: receiving information on a resource allocation pattern for an access link and a backhaul link of a first frequency band; and determining a resource allocation pattern for an access link and a backhaul link of a second frequency band on the basis of the resource allocation pattern of the first frequency band, wherein the first frequency band is any one of an uplink frequency band and a downlink frequency band, and the second frequency band is a remaining one of the uplink frequency band and the downlink frequency band.

Claims

1-10. -10. (canceled)

11. A method of communicating in a wireless communication system, performed by a relay station (RS), the method comprising:

receiving configuration information, from a base station (BS), the configuration information indicating at least one backhaul link subframe which is used for transmission between the BS and the RS with a fixed period;

configuring at least one subframe based on the configuration information; and

communicating with the BS by using the at least one configured subframe,

wherein the at least one configured subframe is selected among the at least one backhaul link subframe with an exception that predefined subframes of a radio frame, the radio frame including ten subframes, are excluded.

12. The method of claim 11, wherein the predefined subframes are a first, a fifth, a sixth and a tenth subframe of a radio frame when the BS and the RS are operated in frequency division duplex.

13. The method of claim 12, further comprising;

connecting with a UE; and

transmitting data to the UE in the first, the fifth, the sixth and the tenth subframes.

14. The method of claim 11, wherein the predefined subframes are a first, a second, a sixth and a seventh subframe of a radio frame when the BS and the RS are operated in time division duplex.

15. The method of claim 14, further comprising;

connecting with a UE; and

transmitting data to the UE in the first, the second, the sixth and the seventh subframes.

16. The method of claim 11, wherein the fixed period is 8 ms, and a length of each subframe is 1 ms.

17. The method of claim 11, wherein the configuration information is received via a higher layer signal.

18. The method of claim 11, wherein the fixed period is related to a hybrid automatic repeat request(HARQ) round trip time (RTT).

19. The method of claim 11, wherein the configuration information includes a bitmap which indicates the at least one backhaul link subframe.

20. The method of claim 19, wherein the bitmap comprises 8 bits.

21. A relay station(RS) comprising:

a processor; and

a radio frequency (RF) unit, coupled to the processor, for transmitting and receiving a radio signal,

wherein the processor receives configuration information, from a base station (BS), the configuration information indicating at least one backhaul link subframe which is used for transmission between the BS and the RS with a fixed period;

configures at least one subframe based on the configuration information; and

communicates with the BS by using the at least one configured subframe,

wherein the at least one configured subframe is selected among the at least one backhaul link subframe with an exception that that predefined subframes of a radio frame, the radio frame including ten subframes, are excluded.

22. The RS of claim 21, wherein the predefined subframes are a first, a fifth, a sixth and a tenth subframe of a radio frame when the BS and the RS are operated in frequency division duplex.

23. The RS of claim 22, wherein the processor transmits data to the UE in the first, the fifth, the sixth and the tenth subframes.

24. The RS of claim 21, wherein the predefined subframes are a first, a second, a sixth and a seventh subframe of a radio frame when the BS and the RS are operated in time division duplex.

25. The RS of claim 24, wherein the processor transmits data to the UE in the first, the second, the sixth and the seventh subframes.

26. The RS of claim 21, wherein the fixed period is 8 ms, and a length of each subframe is 1 ms.

27. The RS of claim 21, wherein the configuration information is received via a higher layer signal.

28. The RS of claim 21, wherein the fixed period is related to a hybrid automatic repeat request(HARQ) round trip time (RTT).

29. The RS of claim 21, wherein the configuration information includes a bitmap which indicates the at least one backhaul link subframe.

30. The RS of claim 29, wherein the bitmap comprises 8 bits.