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

• US 8,165,588 B2
• Filed: 11/21/2008
• Issued: 04/24/2012
• Est. Priority Date: 11/21/2007
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Yu, Tak-Ki, Kim, Yung-Soo, Yun, Sang-Boh, Cho, Myeon-Kyun, Min, Chan-Ho
• Primary Examiner(s): Rao, Seema S
• Assistant Examiner(s): RUSSELL, WANDA Z
• Application Number:
  US12/313,569
• Publication Number:
  US 20090147706A1
• Time in Patent Office: 1,250 Days
• Field of Search: 370/400, 455/452.2
• US Class Current: 455/442
• 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 a radio resource of each RS for a link between the relay station and the mobile station by reusing the first radio resource region based on the full-duplex relay,

wherein the full-duplex relay is performed using two antennas based on a same radio resource, a first of the two antennas configured for communication between the base station and the relay station and the second of the two antennas configured for communication between the relay station and the mobile station,

wherein in the full-duplex relay, the relay station receives data in an access link and transmits data in a relay link at the same time by reusing the first radio resource region, or the relay station transmits data in an access link and receives data in a relay link at the same time by reusing the first radio resource region,

wherein the access link comprises a link between the MS and the RS or a link between the MS and the BS, and the relay link comprises a link between the RS and the BS or a link between the RS and the MS.

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 a 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. The method of claim 1, wherein a frame is transmitted to and received from the BS over a first antenna, and

wherein the frame is transmitted to and received from a mobile station (MS) and a lower relay station (RS) over a second antenna.

7. The method of claim 6, wherein interference between the first antenna and the second antenna is canceled at a receiving side.

8. The method of claim 6, 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.

9. The method of claim 1, wherein a frame is received over a first antenna and transmitted over a second antenna, or the frame is transmitted over the first antenna and received over the second antenna.

10. The method of claim 9, wherein interference between the first antenna and the second antenna is canceled at a receiving side.

11. The method of claim 9, 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 infoimation 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.

12. 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;

allocating a 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; and

allocating radio resources of the relay station 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 based on the full-duplex relay,

wherein the full-duplex relay is performed using two antennas based on a same radio resource, a first of the two antennas configured for communication between the base station and the relay station and the second of the two antennas configured for communication between the relay station and the mobile station,

wherein in the full-duplex relay, the relay station receives data in an access link and transmits data in a relay link at the same time by reusing the first radio resource region, or the relay station transmits data in an access link and receives data in a relay link at the same time by reusing the first radio resource region,

wherein the access link comprises a link between the MS and the RS or a link between the MS and the BS, and the relay link comprises a link between the RS and the BS or a link between the RS and the MS.

13. The method of claim 12, 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.

14. The method of claim 13, 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.

15. 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, wherein the radio resources between the relay station and the mobile station reuse radio resources between the base station and the mobile station, based on the full-duplex relay,

wherein the full-duplex relay is performed using two antennas based on a same radio resource, a first of the two antennas configured for communication between a base station and the relay station and the second of the two antennas configured for communication between the relay station and the mobile station,

wherein in the full-duplex relay, the relay station receives data in an access link and transmits data in a relay link at the same time by reusing the first radio resource region, or the relay station transmits data in an access link and receives data in a relay link at the same time by reusing the first radio resource region,

wherein the access link comprises a link between the MS and the RS or a link between the MS and the BS, and the relay link comprises a link between the RS and the BS or a link between the RS and the MS.

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

a feedback unit configured to receive channel information from a plurality of mobile stations (MSs) and relay stations (RSs);

a scheduler configured to schedule 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 schedule radio resources of each RS 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 based on full-duplex relay; and

a resource region constitutor configured to generate 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,

wherein the full-duplex relay is performed using two antennas based on a same radio resource, a first of the two antennas configured for communication between the base station and the relay station and the second of the two antennas configured for communication between the relay station and the mobile station,

wherein in the full-duplex relay, the relay station receives data in an access link and transmits data in a relay link at the same time by reusing the first radio resource region, or the relay station transmits data in an access link and receives data in a relay link at the same time by reusing the first radio resource region,

wherein the access link comprises a link between the MS and the RS or a link between the MS and the BS, and the relay link comprises a link between the RS and the BS or a link between the RS and the MS.

17. The apparatus of claim 16, 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, is configured to allocate resources using the second radio resource region.

18. The apparatus of claim 16, 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.

19. The apparatus of claim 16, 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.

20. The apparatus of claim 19, 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.

21. 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 configured to receive channel information from a plurality of mobile stations (MSs);

a controller configured to determine 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 configured to allocate a 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, the scheduler configured to allocate a radio resource of the relay station 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 based on the full-duplex relay,

wherein the full-duplex relay is performned using two antennas based on a same radio resource, a first of the two antennas configured for communication between the base station and the relay station and the second of the two antennas configured for communication between the relay station and the mobile station,

wherein in the full-duplex relay, the relay station receives data in an access link and transmits data in a relay link at the same time by reusing the first radio resource region, or the relay station transmits data in an access link and receives data in a relay link at the same time by reusing the first radio resource region,

wherein the access link comprises a link between the MS and the RS or a link between the MS and the BS, and the relay link comprises a link between the RS and the BS or a link between the RS and the MS.

22. The apparatus of claim 21, 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.

23. The apparatus of claim 22, 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.

24. 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 configured to receive channel information from a plurality of mobile stations (MSs); and

a data buffer configured to allocate radio resources between the relay station and a mobile station in a preset resource region using the channel information, wherein the radio resources between the relay station and the mobile station reuse radio resources between the base station and the mobile station based on the full-duplex relay,

wherein the full-duplex relay is performed using two antennas based on a same radio resource, a first of the two antennas configured for communication between a base station and the relay station and the second of the two antennas configured for communication between the relay station and the mobile station,

wherein in the full-duplex relay, the relay station receives data in an access link and transmits data in a relay link at the same time by reusing the first radio resource region, or the relay station transmits data in an access link and receives data in a relay link at the same time by reusing the first radio resource region,

wherein the access link comprises a link between the MS and the RS or a link between the MS and the BS, and the relay link comprises a link between the RS and the BS or a link between the RS and the MS.