Method and system in a transceiver for selecting a communication parameter for communicating with a concentrated subscriber unit

• US 6,385,455 B1
• Filed: 04/12/1999
• Issued: 05/07/2002
• Est. Priority Date: 04/12/1999
• Status: Active Grant

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Willey, William Daniel, St. Clair, Jon Quin
• Primary Examiner(s): CUMMING, WILLIAM D
• Application Number:
  US09/289,621
• Time in Patent Office: 1,121 Days
• Field of Search: 455/450, 455/77
• US Class Current: 455/450
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]

Abstract

In a method in a transceiver for selecting a communication parameter for communicating with a concentrated subscriber unit, wherein the concentrated subscriber unit includes a plurality of subscriber terminals, a subscriber terminal identification number of one of the subscriber terminals is determined. Next, N number of selected digits in the subscriber terminal identification number are set equal to predetermined values to produce a modified subscriber terminal identification number. the modified subscriber terminal identification number is then hashed using a hashing function to produce a communication parameter indicator. Finally the communication parameter is selected in response to the communication parameter indicator, wherein groups of subscriber terminal identification numbers having non-selected digits with the same value are hashed to produce the same communication parameter indicator. The communication parameter selected may be a carrier frequency used by the communications system.

Claims

1. A method in a transceiver for selecting a communication parameter for communicating with a concentrated subscriber unit, wherein the concentrated subscriber unit includes a plurality of subscriber terminals, the method comprising the steps of:

determining a subscriber terminal identification number of one of the subscriber terminals;

setting N number of selected digits in the subscriber terminal identification number equal to predetermined values to produce a modified subscriber terminal identification number;

hashing the modified subscriber terminal identification number using a hashing function to produce a communication parameter indicator; and

selecting the communication parameter in response to the communication parameter indicator, wherein groups of subscriber terminal identification numbers having non-selected digits with the same value are hashed to produce the same communication parameter indicator.

2. The method for selecting a communication parameter according to claim 1 further including steps of:

hashing the subscriber terminal identification number using the hashing function to produce a second selected communication parameter indicator; and

selecting a second communication parameter in response to the second selected communication parameter indicator, wherein groups of subscriber terminal identification numbers having non-selected digits with the same value are hashed to produce the same communication parameter indicator and a distributed second selected communication parameter indicator.

3. The method for selecting a communication parameter according to claim 1 wherein the step of determining a subscriber terminal identification number of one of the subscriber terminals further includes reading a subscriber terminal identification number from a register in one of the subscriber terminals.

4. The method for selecting a communication parameter according to claim 1 wherein the step of determining a subscriber terminal identification number of one of the subscriber terminals further includes determining a subscriber terminal identification number from a message associated with one of the subscriber terminals in the concentrated subscriber unit.

5. The method for selecting a communication parameter according to claim 1 wherein the selected communication parameter is a carrier frequency designator.

6. The method for selecting a communication parameter according to claim 1 wherein the second selected communication parameter is an access channel time offset.

7. A system in a transceiver for selecting a communication parameter for communicating with a concentrated subscriber unit, wherein the concentrated subscriber unit includes a plurality of subscriber terminals, the system comprising:

means for determining a subscriber terminal identification number of one of the subscriber terminals;

means for setting N number of selected digits in the subscriber terminal identification number equal to predetermined values to produce a modified subscriber terminal identification number;

means for hashing the modified subscriber terminal identification number using a hashing function to produce a communication parameter indicator; and

means for selecting the communication parameter in response to the communication parameter indicator, wherein groups of subscriber terminal identification numbers having non-selected digits with the same value are hashed to produce the same communication parameter indicator.

8. The system for selecting a communication parameter according to claim 7 further including:

means for hashing the subscriber terminal identification number using the hashing function to produce a second selected communication parameter indicator; and

means for selecting a second communication parameter in response to the second selected communication parameter indicator, wherein groups of subscriber terminal identification numbers having non-selected digits with the same value are hashed to produce the same communication parameter indicator and a distributed second selected communication parameter indicator.

9. The system for selecting a communication parameter according to claim 7 wherein the means for determining a subscriber terminal identification number of one of the subscriber terminals further includes means for reading a subscriber terminal identification number from a register in one of the subscriber terminals.

10. The system for selecting a communication parameter according to claim 7 wherein the means for determining a subscriber terminal identification number of one of the subscriber terminals further includes means for determining a subscriber terminal identification number from a message associated with one of the subscriber terminals in the concentrated subscriber unit.

11. The system for selecting a communication parameter according to claim 7 wherein the selected communication parameter is a carrier frequency designator.

12. The system for selecting a communication parameter according to claim 7 wherein the second selected communication parameter is an access channel time offset.