Unified beacon format
View Patent ↗A beacon frame corresponding to a unified beacon format is generated. Generating the beacon frame comprises generating a first portion of the beacon frame, wherein the first portion has the same format whether (i) it is determined to transmit a short beacon frame or, (ii) it is determined to transmit a full beacon frame. A second portion of the beacon frame is generated. The second portion corresponds to a first subformat when it is determined to transmit the short beacon frame, and the second portion corresponds to a first subformat when it is determined to transmit the full beacon frame. The first subformat is different than the second subformat. An indication of whether the beacon frame corresponds to the first subformat or the second subformat is included (i) in the beacon frame or (ii) in a physical layer (PHY) header associated with the beacon frame.
1. A method for transmitting network information for a wireless network, the method comprising:
determining whether (i) a short beacon is to be transmitted, or (ii) a full beacon is to be transmitted;
generating, at a network interface device, a beacon frame corresponding to a unified beacon format, including
generating a first portion of the beacon frame, wherein the first portion has the same format whether (i) it is determined to transmit the short beacon frame or, (ii) it is determined to transmit the full beacon frame, wherein the first portion comprises (i) a frame control field, (ii) a duration field that follows the frame control field, (iii) a source address field that follows the duration field, and (iv) a timestamp field that follows the source address field;
generating a second portion of the beacon frame, wherein
the second portion corresponds to a first subformat when it is determined to transmit the short beacon frame,
the second portion corresponds to a second subformat when it is determined to transmit the full beacon frame, and
the first subformat is different than the second subformat, and
including, (i) in the beacon frame or (ii) in a physical layer (PHY) header associated with the beacon frame, an indication of whether the beacon frame corresponds to the first subformat or the second subformat; and
transmitting, using the network interface device, the beacon frame.
2. The method of claim 1 , wherein the first portion includes only one address field.
3. The method of claim 1 , wherein:
when the second portion corresponds to the first subformat, the second portion (i) includes a compressed service set identifier (SSID), and (ii) excludes an SSID, and
when the second portion corresponds to the second subformat, the second portion (i) includes the SSID, and (ii) excludes the compressed SSID.
4. An apparatus, comprising:
a network interface device configured to
determine whether (i) a short beacon is to be transmitted, or (ii) a full beacon is to be transmitted,
generate a beacon frame corresponding to a unified beacon format, including
generating a first portion of the beacon frame, wherein the first portion has the same format whether (i) it is determined to transmit the short beacon frame or, (ii) it is determined to transmit the full beacon frame, wherein the first portion comprises (i) a frame control field, (ii) a duration field that follows the frame control field, (iii) a source address field that follows the duration field, and (iv) a timestamp field that follows the source address field,
generating a second portion of the beacon frame, wherein
the second portion corresponds to a first subformat when it is determined to transmit the short beacon frame,
the second portion corresponds to a second subformat when it is determined to transmit the full beacon frame, and
the first subformat is different than the second subformat, and
include, (i) in the beacon frame or (ii) in a physical layer (PHY) header associated with the beacon frame, an indication of whether the beacon frame corresponds to the first subformat or the second subformat, and
cause the beacon frame to be transmitted.
5. The apparatus of claim 4 , wherein the first portion includes only one address field.
6. The apparatus of claim 4 , wherein:
when the second portion corresponds to the first subformat, the second portion (i) includes a compressed service set identifier (SSID), and (ii) excludes an SSID, and
when the second portion corresponds to the second subformat, the second portion (i) includes the SSID, and (ii) excludes the compressed SSID.
7. A method for receiving network information for a wireless network, the method comprising:
receiving, at a communication device, a beacon frame transmitted by an access point, wherein a physical layer (PHY) header is associated with the beacon frame, wherein the beacon frame has a unified format;
determining, based on an indicator (i) in the beacon frame or (ii) in the PHY header, whether the beacon frame has a short beacon subformat or a full beacon subformat;
processing a first portion of the beacon frame, wherein the first portion has the same format whether the beacon frame has (i) the short beacon subformat or, (ii) the full beacon subformat, wherein the first portion comprises (i) a frame control field, (ii) a duration field that follows the frame control field, (iii) a source address field that follows the duration field, and (iv) a timestamp field that follows the source address field;
when it is determined that the beacon frame has the short beacon subformat, processing a second portion of the beacon frame according to the short beacon subformat;
when it is determined that the beacon frame as the full beacon subformat, processing the second portion of the beacon frame according to the full beacon subformat; and
determining network information communicated by the access point based on (i) the processing of the first portion, and (ii) the processing of the second portion.
8. The method of claim 7 , wherein the first portion includes only one address field.
9. The method of claim 7 , wherein:
when the beacon frame has the short beacon subformat, the second portion (i) includes a compressed service set identifier (SSID), and (ii) excludes an SSID, and
when the beacon frame has the full beacon subformat, the second portion (i) includes the SSID, and (ii) excludes the compressed SSID.
10. An apparatus, comprising:
a network interface device configured to
receive a beacon frame that was transmitted by an access point, wherein a physical layer (PHY) header is associated with the beacon frame, and wherein the beacon frame has a unified format,
determine, based on an indicator (i) in the beacon frame or (ii) in the PHY header, whether the beacon frame has a short beacon subformat or a full beacon subformat,
process a first portion of the beacon frame, wherein the first portion has the same format whether the beacon frame has (i) the short beacon subformat or, (ii) the full beacon subformat, wherein the first portion comprises (i) a frame control field, (ii) a duration field that follows the frame control field, (iii) a source address field that follows the duration field, and (iv) a timestamp field that follows the source address field,
when it is determined that the beacon frame has the short beacon subformat, process a second portion of the beacon frame according to the short beacon subformat,
when it is determined that the beacon frame as the full beacon subformat, process the second portion of the beacon frame according to the full beacon subformat, and
determine network information communicated by the access point based on (i) the processing of the first portion, and (ii) the processing of the second portion.
11. The apparatus of claim 10 , wherein the first portion includes only one address field.
12. The apparatus of claim 10 , wherein:
when the beacon frame has the short beacon subformat, the second portion (i) includes a compressed service set identifier (SSID), and (ii) excludes an SSID, and
when the beacon frame has the full beacon subformat, the second portion (i) includes the SSID, and (ii) excludes the compressed SSID.