Method of selecting an optimal communication channel

• US 6,127,946 A
• Filed: 03/13/1998
• Issued: 10/03/2000
• Est. Priority Date: 03/13/1998
• Status: Expired due to Term

• Current Assignee: Elbit Systems Limited
• Original Assignee: BVR Technologies, Ltd. (Technoprises Ltd.)
• Inventors: Tzidon, Aviv, Tzidon, Dekel
• Primary Examiner(s): Tokar, Michael
• Assistant Examiner(s): Jeanglaude, Jean B.
• Application Number:
  US09/041,755
• Time in Patent Office: 935 Days
• Field of Search: 340/988, 340/825.49, 340/573, 340/539, 340/693, 370/332, 370/337, 370/382, 455/33.1
• US Class Current: 340/988
• CPC Class Codes: H04B 7/18508 with satellite system used as relay, i.e. aeronautical mobile satellite service

Abstract

A method of coordinating communications among several moving participants that have several communications channels available to them. Each participant is provided with a mechanism for continuously determining its own location and with a table of the locations of the other participants. Each participant selects the channel to use to communicate to each other participant, based on its own determined location and the tabulated locations of the other participants. Periodically, the participants broadcast their own locations to each other.

Claims

1. A method of coordinating communications among a plurality of participants using a plurality of channels, comprising the steps of:

(a) providing each participant with;

(i) a locator mechanism for determining an absolute location of said participant, and

(ii) a table of absolute locations of the other participants; and

(b) selecting, by at least one participant, one of the plurality of channels, for communication with at least one other participant, based on said absolute location of said at least one participant and said absolute location of said at least one other participant as recorded in said table.

2. The method of claim 1, further comprising the step of:

(c) transmitting, by said at least one participant, said absolute location of said at least one participant, to said at least one other participant, via said selected channel.

3. The method of claim 2, further comprising the step of:

(d) updating said table of said at least one other participant, based on said transmitted absolute location of said at least one participant.

4. The method of claim 1, wherein every participant effects said selecting with respect to every other participant.

5. The method of claim 4, further comprising the step of:

(c) for each participant;

transmitting said determined absolute location to each of the other participants, using said selected channel.

6. The method of claim 5, further comprising the step of:

(d) updating said tables based on said transmitted absolute locations.

7. The method of claim 1, wherein said locator mechanism includes a global positioning system receiver.

8. The method of claim 1, wherein said locator mechanism includes an inertial navigation device.

9. A method of coordinating communications among a plurality of participants using a plurality of distinct communications systems, comprising the steps of:

(a) providing each participant with;

(i) a locator mechanism for determining an absolute location of said participant, and

(ii) a table of absolute locations of the other participants; and

(b) selecting, by at least one participant, one of the plurality of distinct communications systems, for communicating with at least one other participant, based on said absolute location of said at least one participant and said absolute location of said at least one other participant as recorded in said table.

10. A method of coordinating communications among a plurality of participants using a plurality of channels, comprising the steps of:

(a) providing each participant with;

(i) a locator mechanism for determining an absolute location of said participant, and

(ii) a table of absolute locations of the other participants;

(b) selecting, by each participant, for each other participant, one of the plurality of channels, for communicating with said each other participant, based on said absolute location of said each participant and said absolute location of said each other participant as recorded in said table;

(c) for each participant;

transmitting said determined location to every other participant using said selected channel; and

(d) for each participant, receiving said transmitted location of every other participant.