Resource allocation method for backhaul link and access link in a wireless communication system including relay

• US 9,100,149 B2
• Filed: 07/02/2014
• Issued: 08/04/2015
• Est. Priority Date: 08/01/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Kyujin, Chung, Jaehoon, Cho, Hankyu, Lee, Eunjong, Sung, Doohyun
• Primary Examiner(s): Jiang, Charles C
• Assistant Examiner(s): KAMARA, MOHAMED A
• Application Number:
  US14/321,913
• Publication Number:
  US 20140362743A1
• Time in Patent Office: 398 Days
• Field of Search: 370252-253, 370321-322, 370329-330, 370/336, 370/341, 370/345, 370/315, 370/350, 455/450, 455/464, 455/509
• US Class Current: 1/1
• 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. 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 a backhaul link subframe, the backhaul link subframe being used for a transmission from the BS to the RS;

configuring a subframe as the backhaul link subframe, based on the configuration information; and

receiving a signal from the BS by using the backhaul link subframe,

wherein the backhaul link subframe is configured among subframes included in a radio frame with an exception that predefined subframes of the radio frame are excluded,

wherein, when the radio frame includes ten subframes, the predefined subframes are a first, a second, a sixth, and a seventh subframe of the radio frame when the BS and the RS are operated in time division duplex (TDD).

2. The method of claim 1, further comprising:

connecting with a user equipment (UE); and

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

3. The method of claim 1, wherein the configuration information is received via a higher layer signal.

4. The method of claim 1, wherein the configuration information indicates the backhaul link subframe among a fixed number of subframes in a time domain.

5. The method of claim 4, wherein the fixed number is 10.

6. A relay station (RS), comprising:

a radio frequency (RF) unit configured to transmit and receive a radio signal; and

a processor coupled to the RF unit and configured to;

receive configuration information from a base station (BS), the configuration information indicating a backhaul link subframe, the backhaul link subframe being used for a transmission from the BS to the RS;

configure a subframe as the backhaul link subframe, based on the configuration information; and

receive a signal from the BS by using the backhaul link subframe,

wherein the backhaul link subframe is configured among subframes included in a radio frame with an exception that predefined subframes of the radio frame are excluded,

wherein, when the radio frame includes ten subframes, the predefined subframes are a first, a second, a sixth, and a seventh subframe of the radio frame when the BS and the RS are operated in time division duplex (TDD).

7. The RS of claim 6, wherein the processor is further configured to:

connect with a user equipment (UE); and

transmit a signal to the UE in the first, the second, the sixth, and the seventh subframes.

8. The RS of claim 6, wherein the configuration information is received via a higher layer signal.

9. The RS of claim 6, wherein the configuration information indicates the backhaul link subframe among a fixed number of subframes in a time domain.

10. The RS of claim 9, wherein the fixed number is 10.