IP Library Granted Patent US 7,983,225
Granted Patent B2
US 7,983,225 · App. 11/731,407 · Granted Jul 19, 2011

Wireless network beacon timing

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Quick Facts
Patent No.
US 7,983,225
App. No.
11/731,407
Granted
Jul 19, 2011
Kind
B2
Abstract

An apparatus and method of a wireless network timing transmission of multiple BSSID beacons is disclosed. The method includes identifying multiple personalities of the wireless network, wherein a separate MAC address corresponding with each of the personalities. A beacon type is assigned for each of the personalities. During each transmission interval, a plurality of the beacon types are consecutively transmitted, wherein the different beacon types are consecutively spaced during transmission by a predetermined inter-frame spacing, wherein the predetermined inter-frame spacing is substantially less than an air-time duration of each transmission interval.

Claims (33)

1. A method of a wireless network timing transmission of multiple beacons, comprising:

identifying multiple personalities of the wireless network, wherein a separate media access control (MAC) address corresponds with each of the personalities;

assigning a beacon type for each of the personalities;

ranking the beacon types; and

during a transmission interval, consecutively transmitting a plurality of the beacon types in an order defined by the ranking, wherein beacon types ranked to be most important are transmitted last, wherein the beacon types are consecutively spaced during transmission by a predetermined inter-frame spacing, wherein the predetermined inter-frame spacing is substantially less than an air-time duration of a transmission frame.

2. The method of claim 1 , wherein the predetermined inter-frame spacing is less than a tenth of the air-time duration of each transmission frame.

3. The method of claim 1 , wherein the transmission interval is an 802.11 frame.

4. The method of claim 3 , wherein the plurality of beacon types are consecutively spaced during transmission by a short inter-frame space.

5. The method of claim 3 , further comprising setting a duration field of the 802.11 frame to a non-zero duration.

6. A method of a wireless network timing transmission of multiple beacons, comprising:

identifying multiple personalities of the wireless network, wherein a separate media access control (MAC) address corresponds with each of the personalities;

assigning a beacon type for each of the personalities; and

during a transmission interval, consecutively transmitting a plurality of beacon types according to an average length of each of the beacon types, wherein the beacon types are consecutively spaced during transmission by a predetermined inter-frame spacing, wherein the predetermined inter-frame spacing is substantially less than an air-time duration of a transmission frame.

7. The method of claim 6 , wherein the beacon types are consecutively transmitted according to average length, wherein shorter length beacon types are transmitted first and longer length beacon types are transmitted last.

8. A method of a wireless network timing transmission of multiple beacons, comprising:

identifying multiple personalities of the wireless network, wherein a separate media access control (MAC) address corresponds with each of the personalities;

assigning a beacon type for each of the personalities;

determining an average length of beacon groups of each of the beacon types; and

during a transmission interval, transmitting the beacon types in order of the average beacon length of the corresponding beacon groups, wherein the beacon types are consecutively spaced during transmission by a predetermined inter-frame spacing, wherein the predetermined inter-frame spacing is substantially less than an air-time duration of a transmission frame.

9. The method of claim 8 , wherein shortest length beacons are transmitted first and longest beacon groups are transmitted last.

10. A method of a wireless access node within a wireless mesh network timing transmission of multiple base service set identification (BSSID) beacons, comprising:

the access node identifying multiple personalities of the wireless mesh network, wherein a separate media access control (MAC) address corresponds with each of the personalities;

the access node assigning a beacon type for each of the personalities;

ranking the beacon types; and

during a transmission interval, consecutively transmitting a plurality of the beacon types in an order defined by the ranking, wherein beacon types ranked to be most important are transmitted last, wherein the beacon types are consecutively spaced during transmission by a predetermined inter-frame spacing, wherein the predetermined inter-frame spacing is substantially less than an air-time duration of a transmission frame.

11. The method of claim 10 , wherein the predetermined period is less than a tenth of the time duration of each transmission frame.

12. The method of claim 10 , wherein the transmission frame is an 802.11 frame.

13. The method of claim 12 , wherein the different beacon types are consecutively spaced during transmission by a short inter-frame space.

14. The method of claim 12 , further comprising setting a duration field of the 802.11 frame to a non-zero duration.

15. The method of claim 10 , wherein beacon types ranked most important include routing information.

16. The method of claim 10 , further comprising:

consecutively transmitting the plurality of beacon types according to an average length of each of the beacon types.

17. The method of claim 16 , wherein the beacon types are consecutively transmitted according to average length, wherein shorter length beacon types are transmitted first and longer length beacon types are transmitted last.

Assignments (9)
MERGER Recorded Nov 13, 2023
From: HITACHI ENERGY SWITZERLAND AG
To: HITACHI ENERGY LTD
Reel/Frame 065549/0576 →
CHANGE OF NAME Recorded Dec 31, 2021
From: ABB POWER GRIDS SWITZERLAND AG
To: HITACHI ENERGY SWITZERLAND AG
Reel/Frame 058666/0540 →
MERGER Recorded Aug 3, 2021
From: ABB TECHNOLOGY LTD.
To: ABB TECHNOLOGY AG
Reel/Frame 057685/0044 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 15, 2021
From: ABB SCHWEIZ AG
To: ABB POWER GRIDS SWITZERLAND AG
Reel/Frame 055589/0769 →
MERGER Recorded Dec 9, 2020
From: ABB TECHNOLOGY AG
To: ABB SCHWEIZ AG
Reel/Frame 054893/0273 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 8, 2020
From: TROPOS NETWORKS INC.
To: ABB TECHNOLOGY LTD.
Reel/Frame 054644/0511 →
RELEASE Recorded Jul 9, 2012
From: SILICON VALLEY BANK
To: TROPOS NETWORKS, INC.
Reel/Frame 028755/0797 →
SECURITY AGREEMENT Recorded Nov 30, 2009
From: TROPOS NETWORKS, INC.
To: SILICON VALLEY BANK
Reel/Frame 023574/0659 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 30, 2007
From: DEAN, FREDERICK; SRIKRISHNA, DEVABHAKTUNI; GILLAI, SAAR
To: TROPOS NETWORKS, INC.
Reel/Frame 019174/0360 →