METHOD OF ALLOCATING RESOURCE REGION TO REDUCE MAP OVERHEAD

• US 20120287889A1
• Filed: 07/20/2012
• Published: 11/15/2012
• Est. Priority Date: 09/20/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: RYU, Ki Seon, CHO, Hee Jeong, KIM, Jeong Ki, LIM, Jae Won, YOUN, Ae Ran
• Granted Patent: US 8,649,330 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/1838 for semi-reliable protocols, e.g. for less sensitive applications such as streaming video buffer level management for video bitstream receiver H04N21/44004
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 65/65 Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• CPC Class Codes: H04L 65/80 Responding to QoS
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method of allocating a radio resource in a wireless access system includes transmitting, by a base station (BS) to a mobile station (MS), a MAP message comprising a persistent MAP information element, wherein the persistent MAP information element includes resource allocation information for persistently allocating a resource allocation region for communicating data with the MS and acknowledgment (ACK) information indicating an ACK transmission region; waiting for an ACK message from the MS, wherein the ACK message represents a successful reception of the persistent MAP information element; and determining that the persistent MAP information element has not been successfully received by the MS if the ACK message is not transmitted via the ACK transmission region.

Claims

1. A method of allocating a radio resource in a wireless access system, the method comprising:

transmitting, by a base station (BS) to a mobile station (MS), a MAP message comprising a persistent MAP information element, wherein the persistent MAP information element comprises resource allocation information for persistently allocating a resource allocation region for communicating data with the MS and acknowledgment (ACK) information indicating an ACK transmission region;

waiting for an ACK message from the MS, wherein the ACK message represents a successful reception of the persistent MAP information element; and

determining that the persistent MAP information element has not been successfully received by the MS if the ACK message is not transmitted via the ACK transmission region.

2. The method of claim 1, further comprising:

retransmitting the MAP message comprising the persistent MAP information element to the MS.

3. The method of claim 2, wherein the retransmitted MAP message is transmitted at a frame that is located next to a frame where the MAP message has been transmitted.

4. The method of claim 2, wherein the retransmitted MAP message is transmitted after a predetermined number of frames.

5. The method of claim 1, wherein the resource allocation information comprises at least an orthogonal frequency division multiplexing access (OFDMA) symbol offset, a subchannel offset, or OFDMA slot information which indicates the resource allocation region.

6. The method of claim 5, wherein the persistent MAP information element further comprises a field for indicating whether the resource allocation region is allocated or de-allocated.

7. The method of claim 5, wherein the data has a periodic traffic pattern and a fixed payload size.

8. The method of claim 7, wherein the data comprises an IP-based Voice over Internet Protocol (VoIP) data.

9. The method of claim 1, wherein the MAP message is an uplink MAP message or a downlink MAP message.

10. A base station (BS) supporting a method of allocating a radio resource in a wireless access system, wherein the BS is configured to:

transmit, to a mobile station (MS), a MAP message comprising a persistent MAP information element, wherein the persistent MAP information element comprises resource allocation information for persistently allocating a resource allocation region for communicating data with the MS and acknowledgment (ACK) information indicating a ACK transmission region;

wait for an ACK message from the MS, wherein the ACK message represents a successful reception of the persistent MAP information element; and

determine that the persistent MAP information element has not been successfully received by the MS if the ACK message is not transmitted via the ACK transmission region.

11. The base station of claim 10, further configured to:

retransmit the MAP message comprising the persistent MAP information element to the MS.

12. The base station of claim 11, wherein the retransmitted MAP message is transmitted at a frame that is located next to a frame where the MAP message has been transmitted.

13. The base station of claim 11, wherein the retransmitted MAP message is transmitted after a predetermined number of frames.

14. The base station of claim 10, wherein the resource allocation information comprises at least an orthogonal frequency division multiplexing access (OFDMA) symbol offset, a subchannel offset, or OFDMA slot information which indicates the resource allocation region.

15. The base station of claim 14, wherein the persistent MAP information element further comprises a field for indicating whether the resource allocation region is allocated or de-allocated.

16. The base station of claim 14, wherein the data has a periodic traffic pattern and a fixed payload size.

17. The base station of claim 16, wherein the data comprises an IP-based Voice over Internet Protocol (VoIP) data.

18. The base station of claim 10, wherein the MAP message is an uplink MAP message or a downlink MAP message.