Method for controlling operation of a child or neighbor network

• US 7,450,558 B2
• Filed: 10/31/2005
• Issued: 11/11/2008
• Est. Priority Date: 01/03/2002
• Status: Expired due to Fees

• Current Assignee: North Star Innovations Inc. (Wi-LAN Inc.)
• Original Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Inventors: Shvodian, William M.
• Primary Examiner(s): LEE, CHI HO A
• Application Number:
  US11/261,643
• Publication Number:
  US 20060050730A1
• Time in Patent Office: 1,107 Days
• Field of Search: 370/346, 370/461
• US Class Current: 370/346
• CPC Class Codes: H04W 72/12 Wireless traffic scheduling
• CPC Class Codes: H04W 74/02 Hybrid access
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A wireless network is provided that uses pseudo-static time slots. These time slots remain fixed in time unless and until a network controller specifically changes them and the network controller subsequently receives confirmation of the change. Times and durations of the pseudo-static time slots are only changed in small steps as each relevant device in the network acknowledges the step. To aid in allowing full coverage even during a change of active devices, when a transmitter and receiver are moved to a new time slot, the receiver is set to listen to both the old and the new time slots until the transmitter confirms that it has made the switch.

Claims

1. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, comprising:

receiving a primary beacon transmitted by a primary controller device in the primary network, the primary beacon defining a primary superframe and identifying a plurality of primary guaranteed time slots within the primary superframe; and

transmitting a secondary beacon in an assigned time slot selected from the plurality of primary guaranteed time slots, the secondary beacon defining a secondary superframe and identifying a plurality of secondary guaranteed time slots within the assigned time slot.

2. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 1, further comprising listening during a secondary contention access period for signals from secondary devices in the secondary network, the secondary contention access period being formed in the assigned time slot after the secondary beacon.

3. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 1, wherein the secondary beacon further identifies one or more secondary management time slots within the secondary superframe.

4. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 1, wherein the secondary beacon further includes a media access controller address of a source of one or more data transmissions within the secondary superframe.

5. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 1, wherein the secondary beacon further includes information identifying the secondary controller device.

6. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 1, wherein the secondary beacon further includes information identifying at what interval the secondary beacon will be repeated.

7. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 1, further comprising, listening for one or more secondary data packets in one of the secondary guaranteed time slots within the secondary superframe.

8. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 1, further comprising, transmitting one or more secondary data packets in one of the secondary guaranteed time slots within the secondary superframe.

9. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, comprising:

receiving a plurality of primary beacons transmitted by a primary controller device in the primary network, the plurality of primary beacons defining a plurality of primary superframes, respectively, and identifying a plurality of primary guaranteed time slots within each of the plurality of primary superframes; and

transmitting a plurality of secondary beacons in respective primary superframes, each of the plurality of secondary beacons being transmitted in an assigned time slot selected from the plurality of primary guaranteed time slots in a corresponding primary superframe, each of the plurality of secondary beacons defining a corresponding secondary superframe, and identifying a plurality of secondary guaranteed time slots within the corresponding secondary superframe.

10. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 9, further comprising listening during a secondary contention access period in each of the corresponding secondary superframes for signals from secondary devices in the secondary network, the secondary contention access periods in each of the plurality of secondary superframes being formed in corresponding assigned time slots after the secondary beacon.

11. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 9, wherein each of the secondary beacons further identifies one or more secondary management time slots within its corresponding secondary superframe.

12. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 9, wherein each of the secondary beacons further includes a media access controller address of a source of one or more data transmissions within its corresponding secondary superframe.

13. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 9, wherein each of the secondary beacons further includes information identifying the secondary controller device.

14. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 9, wherein each of the secondary beacons further includes information identifying at what interval the secondary beacons are repeated.

15. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 9, further comprising, listening for one or more secondary data packets in one of the secondary guaranteed time slots within each of the secondary superframes.

16. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 9, further comprising, transmitting one or more secondary data packets in one of the secondary guaranteed time slots within each of the secondary superframes.

17. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, comprising:

receiving a primary beacon transmitted by a primary controller device in the primary network, the primary beacon defining a primary superframe and identifying a primary contention access period within the primary superframe; and

transmitting a secondary beacon in the primary contention access period, the secondary beacon defining a secondary superframe and identifying a secondary contention access period within the primary contention access period,

wherein the secondary superframe takes up less than all of the primary contention access period.

18. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 17, wherein the secondary beacon further includes information identifying the secondary controller device.

19. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 17, wherein the secondary beacon further includes information identifying at what interval the secondary beacon will be repeated.

20. A method for a secondary controller device to control operation of a secondary network adjacent to a primary network, as recited in claim 17, further comprising, listening for one or more secondary data packets in one of the secondary guaranteed time slots within the secondary superframe.