System and Method for Assigning Backhaul Resources

• US 20120051277A1
• Filed: 08/18/2011
• Published: 03/01/2012
• Est. Priority Date: 08/25/2010
• Status: Active Grant

• Current Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Futurewei Technologies Incorporated (Huawei Investment & Holding Co., Ltd.)
• Inventors: Li, Zhongfeng, Sartori, Philippe
• Granted Patent: US 8,797,896 B2
• Time in Patent Office: Days
• US Class Current: 370/312
• 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: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

A method for wireless communication comprises a donor enhanced Node B (eNB) transmitting system information for a subframe structure to a relay node (RN), which information comprises radio resource configuration and/or timing information for uplink backhaul transmission. The RN uses an automatic method to select the Round Trip Time (RTT) value for the Hybrid Automatic Repeat request (HARQ) on the uplink backhaul (Un) relay link. The RTT value is implicitly determined according to the Un (backhaul) subframe or MBSFN subframe configuration periodicity. The RTT option is signaled by the Un subframe configuration period of the MBSFN Un downlink signals.

Claims

1. A method of a wireless network communication comprising:

selecting, by a central controller, a resource allocation scheme from a plurality of resource allocation schemes;

selecting a period of a subframe pattern related to the selected resource allocation scheme; and

transmitting, by the central controller, a system configuration information of the subframe pattern to a communication device.

2. The method of claim 1, wherein the period of the subframe pattern is a period of a Multimedia Broadcast Multicast Service over a Single Frequency Network (MBSFN) subframe pattern.

3. The method of claim 1, wherein the resource allocation scheme comprises either a 10 ms or a 40 ms subframe configuration period.

4. The method of claim 1, wherein the plurality of resource allocation schemes are determined by an available Round Trip Time (RTT) set of a Hybrid Automatic Repeat Request (HARM) protocol.

5. The method of claim 4, wherein the available RTT set is determined by the period of the subframe pattern.

6. The method of claim 4, wherein the available RTT set comprises a first subset comprising integer multiples of 8 ms and a second subset comprising integer multiples of 10 ms.

7. The method of claim 1 further comprising sending a resource allocation message to the communication device by the central controller.

8. The method of claim 7, wherein the resource allocation message at a first time comprises a first bitmap of a first length for a 10 ms-period subframe pattern.

9. The method of claim 8, wherein the resource allocation message at a second time comprises a second bitmap of a second length for a 40 ms-period subframe pattern, and wherein the first length is different from the second length.

10. The method of claim 9, wherein each bit of the first bitmap and the second bitmap indicates a subframe allocation for a first subframe of a backhaul subframe pattern.

11. The method of claim 8, wherein the first bitmap is coded according to a following table for a 10 ms subframe allocation:

12. The method of claim 9, wherein the first length is 6, and the second length is 8.

13. The method of claim 1, wherein the central controller is a base station and the communication device is a relay node.

14. The method of claim 1, wherein the resource allocation scheme is a resource allocation scheme for a backhaul subframe pattern.

15. A method of a wireless network communication comprising:

receiving, by a communication device, a system configuration information of a subframe pattern with a period from a central controller;

determining, by the communication device, a resource allocation scheme related to the subframe pattern from a plurality of resource allocation schemes; and

setting up, by the communication device, a communication between the communication device and the central controller based on the resource allocation scheme.

16. The method of claim 15, wherein the period of the subframe pattern is a period of a Multimedia Broadcast Multicast Service over a Single Frequency Network (MBSFN) subframe pattern.

17. The method of claim 15, wherein the resource allocation scheme comprises either a 10 ms or a 40 ms subframe configuration period.

18. The method of claim 15, wherein the plurality of resource allocation schemes are determined by an available Round Trip Time (RTT) set of a Hybrid Automatic Repeat Request (HARM) protocol.

19. The method of claim 18, wherein the available RTT set is determined by the period of the subframe pattern.

20. The method of claim 18, wherein the available RTT set comprises a first subset comprising integer multiples of 8 ms and a second subset comprising integer multiples of 10 ms.

21. The method of claim 15 further comprising receiving a resource allocation message from the central controller by the communication device.

22. The method of claim 21, wherein the resource allocation message at a first time comprises a first bitmap of a first length for a 10 ms-period subframe pattern.

23. The method of claim 22, wherein the resource allocation message at a second time comprises a second bitmap of a second length for a 40 ms-period subframe pattern, and wherein the first length is different from the second length.

24. The method of claim 23, wherein each bit of the first bitmap and the second bitmap indicates a subframe allocation for a first subframe of a backhaul subframe pattern.

25. The method of claim 22, wherein the first bitmap is coded according to a following table for a 10 ms subframe allocation:

26. The method of claim 23, wherein the first length is 6, and the second length is 8.

27. An apparatus for a wireless communication system, comprising:

a resource allocation selector to select a subframe resource allocation message period;

an encoder to encode the selected subframe resource allocation message period by a bitmap; and

a transmitter to transmit the bitmap to a communication device.