Frame structures, method and apparatus for resource allocation in wireless communications system based on full duplex replay

• US 20090147706A1
• Filed: 11/21/2008
• Published: 06/11/2009
• Est. Priority Date: 11/21/2007
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Yun, Sang-Boh, Kim, Yung-Soo, Cho, Myeon-Kyun, Yu, Tak-Ki, Min, Chan-Ho
• Granted Patent: US 8,165,588 B2
• Time in Patent Office: Days
• US Class Current: 370/277
• CPC Class Codes: H04B 17/382 for resource allocation, admission control or handover
• CPC Class Codes: H04B 7/15542 Selecting at relay station its transmit and receive resources selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 8/24 Transfer of terminal data
• CPC Class Codes: H04W 84/047 using dedicated repeater stations
• CPC Class Codes: H04W 88/04 adapted for relaying to or from another terminal or user

Abstract

Frame structures, a method and an apparatus for resource allocation in a wireless communication system based on a full duplex relay are provided. The method for a centralized resource allocation in the wireless communication system based on the full duplex relay includes receiving channel information from a plurality of mobile stations (MSs) and relay stations (RSs); scheduling radio resources for a link between a base station (BS) and the MS and a link between the BS and the RS using the channel quality; constituting a first radio resource region for the link between the BS and the RS and a second radio resource region for the link between the BS and the MS; and scheduling radio resource for a link between the RS and the MS by reusing the first radio resource region. The relay link resource is reused in the full-duplex relay structure, and the system capacity can be raised by minimizing the interference in the resource utilization.

Claims

1. A method for a centralized resource allocation in a wireless communication system based on a full-duplex relay, the method comprising:

receiving channel information from a plurality of mobile stations (MSs) and relay stations (RSs);

scheduling radio resources for a link between a base station (BS) and a mobile station and a link between the base station and a relay station using the channel information;

configuring a first radio resource region for the link between the base station and the relay station and a second radio resource region for the link between the base station and the mobile station; and

scheduling radio resource for a link between the relay station and the mobile station by reusing the first radio resource region.

2. The method of claim 1, further comprising:

after scheduling the radio resource for the link between the relay station and the mobile station, when additional resource allocation is needed for the link between the relay station and the mobile station, allocating resource using the second radio resource region.

3. The method of claim 1, wherein when resource permutation or hopping patterns of the base station and the relay station are the same, the radio resources between the base station and the relay station are scheduled in a distributed manner to build the first radio resource region.

4. The method of claim 1, wherein when resource permutation or hopping patterns of the base station and the relay station are different from each other, the radio resources between the base station and the relay station are scheduled in a time region of a preset frame to build the first radio resource region.

5. The method of claim 4, wherein the radio resource region between the base station and the relay station and the radio resource region between the base station and the mobile station are separated based on the time region in the frame, and a size of the radio resource region between the base station and the relay station is determined by data amounts required by the relay stations and the mobile stations and channel condition.

6. A method of operating a base station (BS) for a distributed resource allocation in a wireless communication system based on a full-duplex relay, the method comprising:

receiving channel information from a plurality of mobile stations (MSs);

determining radio resource amounts for a link between the base station and a mobile station and a link between the base station and a relay station (RS) using the channel information received from the mobile stations; and

allocating radio resource for the link between the base station and the relay station in a corresponding region of a frame according to the determined resource amount.

7. The method of claim 6, further comprising:

allocating radio resource for the link between the relay station and the mobile station by reusing the radio resource region for the link between the base station and the relay station.

8. The method of claim 6, wherein a radio resource region for the link between the base station and the mobile station and a radio resource region for the link between the base station and the relay station are predetermined by separating based on time regions.

9. The method of claim 8, wherein the radio resources for the link between the base station and the relay station are allocated from a front part or a rear part of the frame to a certain time region, and other radio region is allocated as radio resources for the link between the base station and the mobile station.

10. A method of operating a relay station (RS) for a distributed resource allocation in a wireless communication system based on a full-duplex relay, the method comprising:

receiving channel information from a plurality of mobile stations (MSs); and

allocating radio resources between the relay station and a mobile station in a preset resource region using the channel information.

11. The method of claim 10, wherein the radio resources between the relay station and the mobile station reuse radio resources between the base station and the mobile station.

12. An apparatus for a distributed resource allocation in a wireless communication system based on a full-duplex relay, the apparatus comprising:

a feedback unit for receiving channel information from a plurality of mobile stations (MSs) and relay stations (RSs);

a scheduler for scheduling radio resources for a link between a base station (BS) and a mobile station and a link between the base station and a relay station using the channel quality, and scheduling radio resources for a link between the relay station and the mobile station by reusing the radio resources for the link between the base station and the relay station; and

a resource region constitutor for constituting a first radio resource region for the link between the base station and the relay station and a second radio resource region for the link between the base station and the mobile station.

13. The apparatus of claim 12, wherein the scheduler, when additional resource allocation is needed for the link between the relay station and the mobile station after scheduling the radio resources for the link between the relay station and the mobile station, allocates resources using the second radio resource region.

14. The apparatus of claim 12, wherein when resource permutation or hopping patterns of the base station and the relay station are the same, the radio resources between the base station and the relay station are scheduled in a distributed manner to build the first radio resource region.

15. The apparatus of claim 12, wherein when resource permutation or hopping patterns of the base station and the relay station are different from each other, the radio resources between the base station and the relay station are scheduled in a time region of a preset frame to build the first radio resource region.

16. The apparatus of claim 15, wherein the radio resource region between the base station and the relay station and the radio resource region between the base station and the mobile station are separated based on the time region in the frame, and a size of the radio resource region between the base station and the relay station is determined by data amounts required by the relay stations and the mobile stations and channel condition.

17. An apparatus of a base station (BS) for a distributed resource allocation in a wireless communication system based on a full-duplex relay, the apparatus comprising:

a feedback part for receiving channel information from a plurality of mobile stations (MSs);

a controller for determining radio resource amounts for a link between the base station and a mobile station and a link between the base station and a relay station (RS) using the channel information received from the mobile stations; and

a scheduler for allocating radio resource for the link between the base station and the relay station in a corresponding region of a frame according to the determined resource amount.

18. The apparatus of claim 17, wherein the scheduler allocates radio resource for the link between the relay station and the mobile station by reusing the radio resource region for the link between the base station and the relay station.

19. The apparatus of claim 17, wherein a radio resource region for the link between the base station and the mobile station and a radio resource region for the link between the base station and the relay station are predetermined by separating based on time regions.

20. The apparatus of claim 19, wherein radio resources for the link between the base station and the relay station are allocated from a front part or a rear part of the frame to a certain time region, and other radio region is allocated as radio resources for the link between the base station and the mobile station.

21. An apparatus of a relay station (RS) for a distributed resource allocation in a wireless communication system based on a full-duplex relay, the apparatus comprising:

a receive modem for receiving channel information from a plurality of mobile stations (MSs); and

a data buffer for allocating radio resources between the relay station and a mobile station in a preset resource region using the channel information.

22. The apparatus of claim 21, wherein the radio resources between the relay station and the mobile station reuse radio resources between the base station and the mobile station.

23. A frame structure for resource allocation in a wireless communication system based on a full-duplex relay, the frame transmitted and received to and from a base station (BS) over a first antenna and to and from a mobile station (MS) and a lower relay station (RS) over a second antenna.

24. The frame structure of claim 23, wherein interference between the first antenna and the second antenna is canceled at a receiving side.

25. The frame structure of claim 23, wherein a frame for a relay link and a frame for an access link coexist in the frame structure, a preamble for the relay station in a base station frame is unnecessary, frame related information and broadcast information (FCH) for the mobile station and the relay station are simultaneously transmitted in the base station frame, and MAP information for the mobile station and relay station are transmitted in succession in the base station frame.

26. A frame structure for resource allocation in a wireless communication system based on a full-duplex relay, the frame received over a first antenna and transmitted over a second antenna, or transmitted over the first antenna and received over the second antenna.

27. The frame structure of claim 26, wherein interference between the first antenna and the second antenna is canceled at a receiving side.

28. The frame structure of claim 26, wherein a frame for a relay link and a frame for an access link coexist in the frame structure, a preamble for the relay station in a base station frame is unnecessary, frame related information and broadcast information (FCH) for the mobile station and the relay station are simultaneously transmitted in the base station frame, and MAP information for the mobile station and relay station are transmitted in succession in the base station frame.