MODE-SWITCHING WIRELESS COMMUNICATIONS EQUIPMENT

• US 20060264214A1
• Filed: 05/18/2006
• Published: 11/23/2006
• Est. Priority Date: 05/20/2005
• Status: Abandoned Application

• Current Assignee: Nextwave Broadband Incorporated (AT&T, Inc.)
• Original Assignee: Nextwave Broadband Incorporated (AT&T, Inc.)
• Inventors: Bourlas, Yair, Stanwood, Kenneth L., Donahoo, Michael R.
• Application Number:
  US11/419,188
• Publication Number:
  US 20060264214A1
• Time in Patent Office: Days
• US Class Current: 455/433
• CPC Class Codes: H04W 84/20 Master-slave selection or change arrangements

Abstract

A communication device with the ability to switch from operating as a base station to operating as a subscriber station or from a subscriber station to a base station. This enables point-to-multipoint systems with strong quality of service (Qos) to be developed with features, such as self-healing and self organization, normally only found in mesh systems with weak QoS.

Claims

1. A method for providing a self-healing and self-organizing wireless network, comprising:

establishing a base station configured to communicate with an outside network;

establishing one or more subscriber stations configured to communicate with the base station;

at least one of the subscriber stations monitoring for removal of the base station;

in the event removal of the base station, selecting a subscriber station to take over as a new base station for communications between the subscriber stations and outside network; and

switching the selected subscriber station to act as the new base station.

2. The method of claim 1, wherein the communications with the outside network are performed via a satellite communications link.

3. The method of claim 1, wherein the communications with the outside network are performed via a wireless link.

4. The method of claim 1, wherein the wireless link is provided by an unmanned aerial vehicle.

5. The method of claim 1, wherein the communications with the outside network are performed via a wired link.

6. The method of claim 1, wherein the subscriber station maintains a connection to the outside network.

7. A self-healing and self-organizing wireless network system, comprising:

a first communication device configured to operate as a base station for communication with an outside network;

a second communication device comprising a switchable communication device configured for selective operation in a subscriber station mode for communicating with the outside network via the base station or in a base station mode for communication with the outside network and with other subscriber stations;

the second communication device having a network control module configured to monitor for base station failure, and an a network control module configured to switch the second communication device into the base station mode to take over the functions of the original base station and operate as a new base station for communicating with the outside network in the event of base station failure.

8. The system as claimed in claim 7, comprising at least one additional communication device initially configured to operate as a subscriber station, the outside communications module of the second communication device further being configured to establish communications with the additional subscriber station when configured to operate as a new base station,

9. The system as claimed in claim 8, comprising a plurality of additional communication devices, at least some of the additional communication devices comprising switchable communication devices configured for selective operation in a subscriber station mode or a base station mode.

10. The system as claimed in claim 7, wherein the outside communications module is further configured to establish a dedicated connection to the outside network when the module is switched to base station mode, and to maintain the dedicated connection to the outside network.

11. The system of claim 7, wherein each communication device is an application specific integrated circuit (ASIC).

12. The system of claim 11, wherein one or more ASICs has the physical elements which are used in both subscriber stations and base stations.

13. The system of claim 7, wherein each communication device further comprises a media access control (MAC) functional entity configured to allocate available bandwidth on one or more physical channels.

14. A system of claim 8, wherein each switchable communication device has an initiation module configured to determine the next base station in the event of a base station failure by allowing the subscriber stations to negotiate with one another using predetermined variable criteria to ascertain which one will become the next base station.

15. A system for providing a self-healing and self-organizing wireless network comprising:

at least one communication device configured to be a base station;

at least one communication device configured to be a subscriber station;

a initiation module configured to

determine whether a communications device will be a base station or a subscriber station, and

establish a base station;

a outside connections module configured to

establish a dedicated connection to the outside network, and

maintain a dedicated connection to the outside network;

a confirmation of leadership module configured to

register a subscriber station with a base station, and

confirm that the subscriber station is still in contact with the base station; and

a connection failure module configured to

determine if the base station has failed, and notify the initiation module that the base station has failed.

16. A system of claim 15, wherein the initiation module determines the next base station by allowing the subscriber stations to negotiate with one another using. predetermined variable criteria to ascertain which one will become the next base station.

17. A system of claim 15, wherein the initiation module selects the next base station by a predetermined “

next in line”

plan, wherein a specific subscriber station has already been determined to be the next base station.

18. A system of claim 15, wherein once a base station fails the subscriber stations delay for a random period of time and then send out a signal announcing its presence as a new base station.

19. A system of claim 15, wherein once a base station fails human intervention is used to decide which subscriber station will become the new base station.