Methods for multi-band wireless communication and bandwidth management

1. A method to communicate wirelessly over multiple frequency channels, comprising:

scanning a first channel to locate a beacon transmitted by an access point over the first channel;

detecting the beacon in the first channel, wherein the beacon in the first channel comprises an element to indicate availability of a second channel;

transmitting a request frame to the access point over the first channel to request communication over the second channel; and

receiving a response frame from the access point in response to the request frame;

wherein the beacon in the first channel comprises an offset value indicating a timing difference between the beacon in the first channel and another beacon in the second channel.

2. The method of claim 1 , further comprising being associated with the access point on the first channel and the second channel.

3. The method of claim 1 , wherein the first channel is in the 2.4/5 GHz band.

4. The method of claim 1 , wherein the second channel is in the 60 GHz band.

5. A device for multi-band wireless communications, comprising:

a processor;

a memory; and

a transceiver configured to communicate in first and second frequency bands by:

scanning a first channel in the first band to locate a beacon transmitted by an access point over the first channel;

detecting the beacon in the first channel, wherein the beacon in the first channel comprises an element to indicate availability of a second channel in a second band;

transmitting a request frame to the access point over the first channel to request communication over the second channel;

receiving a response frame from the access point in response to the request frame; and

communicating with the access point over the second channel subsequent to said receiving;

wherein the beacon in the first channel contains an offset value indicating a timing difference between the beacon in the first channel and another beacon in the second channel.

6. The device of claim 5 , wherein the device is configured to be associated with the access point on the first channel and the second channel.

7. The device of claim 5 , wherein the first channel is in a 2.4/5 GHz band.

8. The device of claim 5 , wherein the second channel is in a 60 GHz band.

9. A method to communicate wirelessly over multiple frequency channels, comprising:

transmitting a beacon over a first channel in a first frequency band, wherein the beacon comprises an element to indicate availability of a second channel in a second frequency band;

receiving a request frame from a wireless communications device over the first channel, the request frame requesting communication over the second channel;

transmitting a response frame to the wireless communications device in response to the request frame, and

communicating over the second channel with the wireless communications device, subsequent to said transmitting the response;

wherein the beacon in the first channel contains an offset value indicating a timing difference between the beacon in the first channel and another beacon in the second channel.

10. The method of claim 9 , further comprising being associated with the wireless communications device on the first channel and the second channel.

11. The method of claim 9 , wherein the first channel is in a 2.4/5 GHz band.

12. The method of claim 9 , wherein the second channel is in a 60 GHz band.

13. A first wireless communications device for multi-band wireless communications, comprising:

a processor;

a memory; and

a transceiver configured to communicate in first and second frequency bands by:

transmitting a beacon over a first channel in a first frequency band, wherein the beacon comprises an element to indicate availability of a second channel in a second frequency band;

receiving a request frame from a second wireless communications device over the first channel, the request frame requesting communication over the second channel;

transmitting a response frame to the second wireless communications device over the first channel in response to the request frame, and

communicating over the second channel with the second wireless communications device subsequent to said transmitting a response;

wherein the beacon in the first channel contains an offset value indicating a timing difference between the beacon in the first channel and another beacon in the second channel.

14. The first wireless communications device of claim 13 , wherein the first wireless communications device is configured to be associated with the second wireless communications device on the first channel and the second channel.

15. The first wireless communications device of claim 13 , wherein the first channel is in a 2.4/5 GHz band.

16. The first wireless communications device of claim 13 , wherein the second channel is in a 60 GHz band.