Adaptive channel access scheme

• US 7,343,163 B1
• Filed: 06/19/2000
• Issued: 03/11/2008
• Est. Priority Date: 06/19/2000
• Status: Expired due to Term

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Allen, Vernon A., Palacios, Juan C., Chen, Priscilla L., Perkins, Matthew R., O'Dea, Robert J.
• Primary Examiner(s): Ly; Nghi H.
• Application Number:
  US09/596,442
• Time in Patent Office: 2,822 Days
• Field of Search: 455/518, 455/519, 455/62, 455/63, 455/451, 455/452, 455/63.1, 455/452.1, 455/450, 455/423, 370/329
• US Class Current: 455/452.1
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04W 72/563 of the wireless resources
• CPC Class Codes: H04W 84/08 Trunked mobile radio systems

Abstract

An adaptive channel access scheme allows for statistics that are collected to be used to group radio users into subgroups according to the desired statistic. The subgroups then utilize channels, separated by time or frequency, to access the communication system (100). The sub-grouping of the radio users is designed to help minimize the chances of channel-access collisions from occurring.

Claims

1. A method for accessing a radio communication system having a plurality of radios, comprising the steps of:

(a) separating the plurality of radios into two or more groups, wherein each group of radios are arranged to communicate over different communication channels;

(b) gathering a communication connection statistic on the plurality of radios;

(c) determining whether the two or more groups should be reconfigured based on the gathered communication statistics; and

(d) when a determination is made that the two or more groups should be reconfigured to allow a reduction in collisions on a communication channel, reconfiguring the grouping of radios based on the communication connection statistics gathered in step (b), wherein the communications connection statistics are used to determine the reconfigured radio groupings and wherein each of the reconfigured radio groupings are arranged to share different respective communication channels without removing radios from the system and without reducing the number of channels used amongst the groups.

2. A method as defined in claim 1, further comprising at step (d) the step of:

allowing access to the radio communication system based on the reconfigured grouping of the radios.

3. A method as defined in claim 2, repeating steps (b) through (d) periodically.

4. A method as defined in claim 1, wherein the communication connection statistic gathered in step (b) comprises the average channel usage by each of the plurality of radios.

5. A method as defined in claim 1, wherein the communication connection statistic gathered in step (b) comprises the number of channel accesses per unit time by each of the plurality of radios.

6. A method as defined in claim 1, wherein the communication connection statistic gathered in step (b) comprises the priority of each of the plurality of radios.

7. A method as defined in claim 1, wherein the communication connection statistic gathered in step (b) comprises the average received signal strength of each of the plurality of radios.

8. A method as defined in claim 1, wherein the two or more groups of radios established in step (a) can access a given radio channel at specified times which are different for each of the two or more groups.

9. A method as defined in claim 1, wherein step (b) is performed by a radio communication system controller.

10. A method as defined in claim 1, wherein step (b) is performed by each of the plurality of radios.

11. A method as defined in claim 1, wherein the radio communication system comprises a time division multiple access radio communication system.

12. A method as defined in claim 1, wherein steps (b) and (c) are repeated periodically.

13. A method as defined in claim 1, wherein the communication connection statistic in step (b) is gathered by a central radio communication system resource.

14. A method as defined in claim 1, wherein the communication connection statistic in step (b) is gathered by each of the plurality of radios.

15. A method as defined in claim 1, wherein steps (b) and (c) are performed at predetermined periods of time.

16. A method as defined in claim 1, wherein the communication connection statistic gathered in step (b) comprises talk-time associated with each of the plurality of radios.