Method and apparatus of dynamic bandwidth management

1. A method of communication in a wireless communication network comprising:

during a polling period, transmitting a plurality of poll request frames individually directed to a plurality of devices using beamforming techniques, wherein the plurality of poll request frames include a plurality of different time offsets for sending a plurality of poll response frames;

during the polling period, directly receiving a poll response frame from a first device of said devices, the poll response frame including a channel bandwidth allocation request to communicate with a second device of said devices;

during a grant period, subsequent to said polling period, dynamically allocating a channel bandwidth according to the channel bandwidth allocation request, said allocating including directly transmitting to said first and second devices grant frames granting a scheduled period for direct communication between said first and second devices; and

truncating said scheduled period by:

receiving a bandwidth truncating message from said first device;

obtaining knowledge on a channel bandwidth usage; and

transmitting a polling grant frame with a required bandwidth according to the channel bandwidth usage.

2. The method of claim 1 , wherein receiving said poll response frame from said first device comprises receiving said poll response frame from a transmitter device of said first device, and wherein transmitting said grant frames to said first and second devices comprises transmitting said grant frames to said transmitter device and to a receiver device of said second device.

3. The method of claim 1 comprising:

scheduling a plurality of response time slots for said plurality of devices.

4. The method of claim 1 , wherein obtaining comprises:

transmitting a request frame which includes a goal of allocating a link free up time to another link.

5. The method of claim 1 comprising:

receiving a channel bandwidth extension message from said first device requesting to extend said scheduled period; and

granting a channel bandwidth extension to extend said scheduled period based on a link bandwidth usage.

6. The method of claim 5 , wherein granting comprises:

transmitting a poll grant frame to advertise the channel bandwidth extension.

7. A wireless communication device comprising:

a transmitter to transmit, during a polling period, a plurality of poll request frames individually directed to a plurality of devices using beamforming techniques, wherein the plurality of poll request frames include a plurality of different time offsets for sending a plurality of poll response frames;

a receiver to directly receive, during the polling period, a poll response frame from a first device of said devices, the poll response frame including a channel bandwidth allocation request to communicate with a second device of said devices; and

a bandwidth allocator to dynamically allocate a channel bandwidth for direct communication between said first and second devices according to the channel bandwidth allocation request,

wherein said transmitter is to transmit to said first and second devices, during a grant period, subsequent to said polling period, grant frames granting a scheduled period for the direct communication between said first and second devices;

wherein the bandwidth allocator is able to truncate the scheduled period by:

receiving a bandwidth truncating message from said first device;

obtaining knowledge on a channel bandwidth usage; and

transmitting a polling grant frame with a required bandwidth according to the channel bandwidth usage.

8. The wireless communication device of claim 7 , wherein said first device comprises a transmitter device and said second device comprises a receiver device.

9. The wireless communication device of claim 7 , wherein the bandwidth allocator is to schedule a plurality of response time slots for said plurality of devices.

10. The wireless communication device of claim 7 , wherein obtaining comprises:

transmitting a request frame which includes a goal of allocating a link free up time to another link.

11. The wireless communication device of claim 7 , wherein

the receiver is to receive a channel bandwidth extension message from said first device requesting to extend said scheduled period,

and wherein the bandwidth allocator is to grant a channel bandwidth extension to extend said scheduled period based on a link bandwidth usage.

12. The wireless communication device of claim 11 , wherein the transmitter is to transmit a poll grant frame to advertise the channel bandwidth extension.

13. The wireless communication device of claim 7 comprising a piconet coordinator (PNC).

14. The wireless communication device of claim 7 comprising an access point (AP).

15. A wireless communication network comprising a station including:

a transmitter operably coupled to a beamformer and to two or more antennas to transmit, during a polling period, a plurality of directional beams, which include a plurality of poll request frames individually directed to a plurality of devices, wherein the plurality of poll request frames include a plurality of different time offsets for sending a plurality of poll response frames;

a receiver to directly receive, during the polling period, a poll response frame from a first device of said devices, the poll frame including a channel bandwidth allocation request to communicate with a second device of said devices; and

a bandwidth allocator to dynamically allocate a channel bandwidth for direct communication between said first and second devices according to the channel bandwidth allocation request,

wherein said transmitter is to transmit to said first and second devices, during a grant period, subsequent to said polling period, grant frames granting a scheduled period for the direct communication between said first and second devices;

wherein the bandwidth allocator is able to truncate the scheduled period by:

receiving a bandwidth truncating message from said first device;

obtaining knowledge on a channel bandwidth usage; and

transmitting a polling grant frame with a required bandwidth according to the channel bandwidth usage.

16. The wireless communication network of claim 15 , wherein said first device comprises a transmitter device and said second device comprises a receiver device.

17. The wireless communication network of claim 16 , wherein the bandwidth allocator is to schedule a plurality of response time slots for said plurality of devices.

18. The wireless communication network of claim 15 , wherein obtaining comprises:

transmitting a request frame which includes a goal of allocating a link free up time to another link.

19. The wireless communication network of claim 15 wherein

the receiver is to receive a channel bandwidth extension message from said first device requesting to extend said scheduled period;

and wherein the bandwidth allocator is to grant a channel bandwidth extension to extend said scheduled period based on a link bandwidth usage.

20. The wireless communication network of claim 19 , wherein the transmitter is to transmit a poll grant frame to advertise the channel bandwidth extension.

21. The wireless communication network of claim 15 comprising a wireless personal area network, wherein the station comprises a piconet coordinator (PNC).

22. The wireless communication network of claim 15 comprising a wireless local area network, wherein the station comprises an access point (AP).