SYSTEM AND METHOD FOR BANDWIDTH RESERVATION PROTOCOL FOR SPATIAL REUSE IN A WIRELESS COMMUNICATION NETWORK

• US 20100020770A1
• Filed: 07/24/2008
• Published: 01/28/2010
• Est. Priority Date: 07/24/2008
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Xia, Pengfei, Ngo, Chiu, Qin, Xiangping
• Granted Patent: US 8,355,387 B2
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/2385 Channel allocation H04N21/266 takes precedence; Bandwidth allocation H04N21/24 takes precedence ; allocation of channels according to the instantaneous demands of the users in time-division multiplex systems H04J3/1682; admission control, resource allocation in open networks H04L12/5692; arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896; negotiating bandwidth in wireless networks H04W28/16
• CPC Class Codes: H04N 21/2402 Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876
• CPC Class Codes: H04N 21/2408 Monitoring of the upstream path of the transmission network, e.g. client requests monitoring data switching networks utilization H04L43/0876; scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 74/0816 with collision avoidance

Abstract

A system and method for providing spatial reuse in a wireless network for communicating compressed and uncompressed audio/video is disclosed. A bandwidth reservation request for data communication with a receiver to a coordinator is transmitted. A first response indicating availability of the receiver for the data communication is received. A channel is listened to by a station for channel busy indication (CBI) messages transmitted by other stations in the wireless network. A local channel occupation report comprising data indicative of one or more time periods during which one or more other stations in the wireless network are scheduled to transmit data messages is transmitted to the coordinator. A second response comprising data indicative of one or more allocated channel time slots is received. Audio and/or video (A/V) data is transmitted to the receiver during the allocated channel time slots.

Claims

1. ) A method of providing spatial reuse in a wireless network for communicating compressed or uncompressed video/audio, the method comprising:

transmitting a bandwidth reservation request for data communication with a receiver to a coordinator;

receiving a first response indicating availability of the receiver for the data communication;

listening to a local channel for channel busy indication (CBI) messages transmitted by other stations in the wireless network;

transmitting a local channel occupation report comprising data indicative of one or more time periods during which one or more other stations in the wireless network are scheduled to transmit data messages to the coordinator;

receiving a second response comprising data indicative of one or more allocated channel time slots; and

transmitting audio and/or video (A/V) data to the receiver during the one or more allocated channel time slots.

2. ) The method of claim 1, wherein at least one of the allocated channel time slots is allocated for other non-interfering stations in the wireless network.

3. ) The method of claim 1, wherein the bandwidth reservation request is transmitted during a contention period of a superframe.

4. ) The method of claim 1, wherein the first response comprises data indicative of a time period reserved for antenna training.

5. ) The method of claim 1, further comprising performing antenna training at a time period reserved for antenna training.

6. ) The method of claim 1, wherein the local channel occupation report is based at least in part on received CBI messages.

7. ) The method of claim 1, wherein the CBI messages comprise a Request-To-Send (RTS) message.

8. ) The method of claim 1, wherein the CBI messages comprise a Clear-To-Send (CTS) message.

9. ) The method of claim 1, wherein the available channel time slots comprise one or more channel time blocks (CTBs).

10. ) The method of claim 9, wherein the CTBs include one or more CTBs allocated for non-interfering data streams from one or more other stations in the wireless network.

11. ) The method of claim 1, further comprising periodically transmitting RTS messages.

12. ) A method of providing a spatial reuse in a wireless network for communicating compressed or uncompressed audio/video, the method comprising:

receiving a bandwidth reservation request from a transmitter for data communication with a receiver;

determining that the receiver is available for data communication;

transmitting a first response indicating availability of the receiver to the transmitter;

receiving a local channel time occupation report comprising data indicative of one or more time periods during which one or more other stations in the wireless network are scheduled to transmit data messages;

allocating a bandwidth for the data communication between the transmit and receivers based at least in part on the local channel time occupation report; and

transmitting a second response comprising data indicative of one or more allocated channel time slots to the transmitter.

13. ) The method of claim 12, wherein at least one of the allocated channel time slots is allocated for other non-interfering stations in the wireless network.

14. ) The method of claim 12, wherein the first response comprises data indicative of a time period reserved for antenna training.

15. ) The method of claim 12, wherein receiving the local channel time occupation report comprises receiving local channel time occupation reports from the transmitter and receiver.

16. ) The method of claim 12, wherein allocating the bandwidth comprises determining one or more available channel time slots based at least in part on the local channel occupation report.

17. ) A method of providing a spatial reuse in a wireless network for communicating compressed or uncompressed audio/video, the method comprising:

receiving a probe inquiring availability for data communication with a transmitter;

transmitting a probe response indicating availability;

listening to a channel for channel busy indication (CBI) messages transmitted by one or more other stations in the wireless network;

transmitting a local channel occupation report comprising data indicative of one or more time periods during which one or more other stations in the wireless network are scheduled to transmit to the coordinator; and

waiting for transmission of audio and/or video (A/V) data from the transmitter.

18. ) The method of claim 17, further comprising performing antenna training with the transmitter at a reserved time period.

19. ) The method of claim 17, further comprising periodically transmitting CTS messages.

20. ) A system for providing spatial reuse in a wireless network for communicating uncompressed video, the system comprising:

a processor configured to;

transmit a bandwidth reservation request for data communication with a receiver to a coordinator,

receive a first response indicating availability of the receiver for the data communication,

listen to a channel for channel busy indication (CBI) messages transmitted by other stations in the wireless network,

transmit a local channel occupation report comprising data indicative of one or more time periods during which one or more other stations in the wireless network are scheduled to transmit interfering data messages to the coordinator,

receive a second response comprising data indicative of one or more allocated channel time slots; and

an antenna or an antenna array in data communication with the processor and configured to transmit audio and/or video (A/V) data during the one or more allocated channel time slots.

21. ) The system of claim 20, wherein the antenna or the antenna array includes a directional antenna, wherein the processor is further configured to train the directional antenna.

22. ) A system for providing a spatial reuse in a wireless network for communicating compressed or uncompressed audio/video, the system comprising:

a processor configured to;

receive a bandwidth reservation request from a transmitter for data communication with a receiver,

determine that the receiver is available for data communication,

transmit a first response indicating availability of the receiver to the transmitter,

receive a local channel time occupation report from at least one of the transmitter and receiver,

allocate bandwidth for the data communication between the transmitter and the receiver based at least in part on the local channel time occupation report, and

transmit a second response comprising data indicative of the allocated bandwidth to the transmitter; and

an antenna or an antenna array in data communication with the processor and configured to communicate control data with the transmitter and the receiver.

23. ) The system of claim 22, wherein the processor is further configured to perform bandwidth reservations for all stations in the wireless network.

24. ) A system for providing a spatial reuse in a wireless network for communicating compressed or uncompressed video, the system comprising:

a processor configured to;

receive a probe inquiring availability for data communication with a transmitter,

transmit a probe response indicating availability,

listen to a channel for channel busy indication (CBI) messages transmitted by other stations in the wireless network,

transmit a local channel occupation report comprising data indicative of one or more time periods during which one or more other stations in the wireless network are scheduled to transmit data messages to the coordinator, and

wait for transmission of audio and/or video (A/V) data from the transmitter; and

an antenna or an antenna array in data communication with the processor and configured to receive audio and/or video (A/V) data from the transmitter.

25. ) A computer-usable medium in a system for wireless communication of compressed or uncompressed audio/video having computer readable code comprising instructions for:

transmitting a bandwidth reservation request for data communication with a receiver to a coordinator;

receiving a first response indicating availability of the receiver for the data communication;

listening to a local channel for channel busy indication (CBI) messages transmitted by other stations in the wireless network;

transmitting a local channel occupation report comprising data indicative of one or more time periods during which one or more other stations in the wireless network are scheduled to transmit data messages to the coordinator;

receiving a second response comprising data indicative of one or more allocated channel time slots; and

transmitting audio and/or video (A/V) data to the receiver during the one or more allocated channel time slots.