SYSTEM AND METHOD FOR WIRELESS COMMUNICATION OF UNCOMPRESSED VIDEO HAVING A BEACON LENGTH INDICATION

• US 20080129880A1
• Filed: 11/07/2007
• Published: 06/05/2008
• Est. Priority Date: 12/04/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Singh, Harkirat, Shao, Huai-Rong, Ngo, Chiu, Qin, Xiangping
• Granted Patent: US 8,102,835 B2
• Time in Patent Office: Days
• US Class Current: 348/723
• 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

Abstract

A system and method for efficiently communicating messages over a low-rate channel between multiple devices in a system for wireless communication of uncompressed video is disclosed. A beacon length indication and processing method is provided to solve the problem of long beacon processing delay at the MAC layer of a receiving station.

Claims

1. A system for wireless communication of uncompressed video comprising:

a processor for generating a beacon length indication value representing the time length of a beacon frame;

a memory in communication with the processor to store the beacon length indication value; and

a transmitter for wirelessly transmitting the beacon length indication value.

2. The system of claim 1, wherein the beacon length indication value represents the time length of the beacon frame belonging to a current superframe.

3. The system of claim 1, wherein the beacon length indication value represents the time length of the beacon frame belonging to a next superframe.

4. The system of claim 1, wherein the beacon length indication value is stored in the beacon frame.

5. The system of claim 4, wherein the beacon length indication value is stored in a header of the beacon frame.

6. The system of claim 5, wherein the header is a long low-rate physical layer (LRP) header.

7. The system of claim 6, wherein the beacon length indication value is stored in a medium access control protocol data unit length subfield of the long LRP header.

8. A system for wireless communication of uncompressed video comprising:

a receiver for wirelessly receiving a beacon length indication value representing the time length of a beacon frame;

a first memory to store the beacon length indication value; and

a processor in data communication with the first memory for initiating and completing a process for contending a current low rate physical layer (LRP) channel using the beacon length indication value.

9. The system of claim 8, wherein the beacon length indication value represents the time length of the beacon frame belonging to a current superframe.

10. The system of claim 8, wherein the beacon length indication value represents the time length of the beacon frame belonging to a next superframe.

11. A method of processing of beacon frames in a system for wireless communication of uncompressed video, the method comprising:

generating a beacon length indication value representing the time length of a beacon frame;

storing the beacon length indication value in a beacon frame; and

wirelessly transmitting the beacon frame.

12. The method of claim 11, wherein the beacon length indication value represents the time length of the beacon frame belonging to a current superframe.

13. The method of claim 11, wherein the beacon length indication value represents the time length of the beacon frame belonging to a next superframe.

14. The method of claim 11, wherein the generating the beacon length indication value is performed by a media access control (MAC) layer of the transmitting station.

15. The method of claim 11, wherein storing includes storing the beacon length indication in a header of the beacon frame.

16. The method of claim 11, wherein the header is a long low rate channel (LRP) header.

17. A method of processing of beacon frames in a system for wireless communication of uncompressed video, the method comprising:

wirelessly receiving a beacon frame that includes a beacon length indication value representing the time length of a beacon frame by a receiving station; and

initiating and completing a process for contending a current low rate physical layer (LRP) channel using the beacon length indication value by the receiving station.

18. The method of claim 17 further comprising sending out a Channel Time Block (CTB) information request by the receiving station to a coordinator station within a first preset time if the receiving station does not receive part of the beacon frame that includes the beacon length indication value within a second preset time from a nominal beacon starting time.

19. The method of claim 17 further including parsing the beacon length indication value from the beacon frame.

20. The method of claim 19, wherein the parsing is performed by a physical (PHY) layer of the receiving station.

21. The method of claim 17, wherein the process for contending the current LRP channel is completed before the completion of processing of the beacon frame by the receiving station.

22. The method of claim 17, wherein the process for contending the current LRP channel is performed by a media access control (MAC) layer of the receiving station.

23. The method of claim 22, wherein the MAC layer receives the beacon length indication value and starts the process for contending the current LRP channel before the MAC layer completes processing of the beacon frame.

24. The method of claim 23, wherein the MAC layer contends the current LRP channel at Random Access Time Block (RATB) without waiting for the beacon process completion at the MAC layer.

25. A computer-usable medium in a system for wireless communication of uncompressed video having computer readable code comprising instructions for processing and storing a beacon length indication value representing the time length of a beacon frame.