Group based beacons

1. A method for transmitting network information for a wireless network, the method comprising:

allocating, at an access point, a plurality of stations among multiple groups, the multiple groups including a first group and a second group;

generating, at a network interface of the access point, a first beacon frame including network information for the first group;

inserting an identifier of the first group in a physical layer (PHY) header associated with the first beacon frame;

generating, at the network interface of the access point, a second beacon frame including network information for the second group;

inserting an identifier of the second group in a PHY header associated with the second beacon frame;

transmitting, using the network interface device, the first beacon frame and the PHY header associated with the first beacon frame; and

transmitting, using the network interface device, the second beacon frame and the PHY header associated with the second beacon frame.

2. The method of claim 1 , wherein:

the identifier of the first group includes a first association identifier (AID); and

the identifier of the second group includes a second AID.

3. The method of claim 1 , further comprising:

receiving, at the access point, an association request from an unassociated station, the association request including an indicator of a preference for group assignment; and

assigning, at the access point, the unassociated station to one of the groups in the multiple groups based on the preference for group assignment.

4. An apparatus, comprising:

a network interface device having one or more integrated circuits configured to

allocate a plurality of stations among multiple groups, the multiple groups including a first group and a second group,

generate a first beacon frame including network information for the first group,

insert an identifier of the first group in a physical layer (PHY) header associated with the first beacon frame,

generate a second beacon frame including network information for the second group;

insert an identifier of the second group in a PHY header associated with the second beacon frame,

cause the first beacon frame and the PHY header associated with the first beacon frame to be transmitted, and

cause the second beacon frame and the PHY header associated with the second beacon frame to be transmitted.

5. The apparatus of claim 4 , wherein:

the identifier of the first group includes a first association identifier (AID); and

the identifier of the second group includes a second AID.

6. The apparatus of claim 4 , wherein the one or more integrated circuits are configured to:

receive an association request from an unassociated station, the association request including an indicator of a preference for group assignment, and

assign an unassociated station to one of the groups in the multiple groups based on the preference for group assignment.

7. A method for receiving network information for a wireless network, the method comprising:

receiving, at a communication device, a plurality of beacon frames, each beacon frame addressed to a respective group of stations, wherein each beacon frame has an associated respective physical layer (PHY) header having a respective group identifier, and wherein the plurality of beacon frames have been transmitted by an access point;

determining, at the communication device, a preferred group, wherein determining the preferred group is based on reception of the plurality of beacon frames;

generating, at the communication device, an association request that includes an indication of the preferred group;

transmitting, with the communication device, the association request to the access point; and

receiving, at the communication device, a response to the association request, the response indicating an assignment, by the access point, of the communication device to one of the groups.

8. The method of claim 7 , further comprising:

transmitting, with the communication device, one or more probe request frames, each probe request frame corresponding to a respective group of stations; and

receiving, at the communication device, one or more group-based probe response frames responsive to the one or more probe request frames, wherein each of the one or more group-based probe response frames includes an indicator of a group to which the group-based probe response frame corresponds;

wherein determining the preferred group is further based on reception of the one or more group-based probe response frames.

9. The method of claim 7 , wherein each group identifier comprises an association identifier (AID).

10. An apparatus, comprising:

a network interface having one or more integrated circuits configured to:

receive a plurality of beacon frames, each beacon frame addressed to a respective group of stations, wherein each beacon frame has an associated respective physical layer (PHY) header having a respective group identifier, and wherein the plurality of beacon frames have been transmitted by an access point,

determine a preferred group, wherein determining the preferred group is based on reception of the plurality of beacon frames,

generate an association request that includes an indication of the preferred group,

transmit the association request to the access point, and

receive a response to the association request, the response indicating an assignment, by the access point, of the communication device to one of the groups.

11. The apparatus of claim 10 , wherein the one or more integrated circuits are configured to:

transmit one or more probe request frames, each probe request frame corresponding to a respective group of stations, and

receive one or more group-based probe response frames responsive to the one or more probe request frames, wherein each of the one or more group-based probe response frames includes an indicator of a group to which the group-based probe response frame corresponds,

determine the preferred group further based on reception of the one or more group-based probe response frames.

12. The method of claim 10 , wherein each group identifier comprises an association identifier (AID).