Paging reception assurance in a multiply registered wireless transceiver

• US 6,282,178 B1
• Filed: 07/13/1998
• Issued: 08/28/2001
• Est. Priority Date: 07/14/1997
• Status: Expired due to Term

• Current Assignee: Hughes Network Systems LLC (Echostar Corporation)
• Original Assignee: Hughes Electronics Corporation (Rtx Corporation)
• Inventors: He, Xiaoping, Noerpel, Anthony
• Primary Examiner(s): Patel, Ajit
• Assistant Examiner(s): TRAN, THIEN D
• Application Number:
  US09/115,101
• Time in Patent Office: 1,142 Days
• Field of Search: 370/316, 370/330, 370/327, 370/329, 370/341, 370/328, 455/31.2
• US Class Current: 370/316
• CPC Class Codes: H04B 7/18517 Transmission equipment in earth stations
• CPC Class Codes: H04B 7/18539 Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
• CPC Class Codes: H04B 7/18543 for adaptation of transmission parameters, e.g. power control for detecting or preventing errors in the information received H04L1/00
• CPC Class Codes: H04B 7/18558 Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
• CPC Class Codes: H04B 7/18567 Arrangements for providing additional services to the basic mobile satellite telephony service
• CPC Class Codes: H04B 7/18571 for satellites; for fixed or mobile stations
• CPC Class Codes: H04B 7/1858 Arrangements for data transmission on the physical system, i.e. for data bit transmission between network components
• CPC Class Codes: H04B 7/18582 Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access
• CPC Class Codes: H04B 7/19 Earth-synchronous stations
• CPC Class Codes: H04B 7/2041 Spot beam multiple access
• CPC Class Codes: H04B 7/2125 Synchronisation
• CPC Class Codes: H04W 28/14 using intermediate storage
• CPC Class Codes: H04W 52/0203 in the radio access network or backbone network of wireless communication networks
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 76/25 Maintenance of established connections
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 84/06 : Airborne or Satellite Networks space-based or airborne stations H04B7/185
• CPC Class Codes: Y02D 30/70 : in wireless communication networks

Abstract

An approach for selecting an asynchronous paging interval involves selecting a set of possible paging schemes for one wireless system; selecting a paging interval for another wireless system that is asynchronous with the paging schemes selected for the one wireless system; determining, after some number of paging repetitions, the probability of collision between a first paging channel in the one wireless system, and a second paging channel in the other wireless system; reselecting the paging interval for the other wireless system, asynchronous with the paging schemes selected for the one wireless system, and repeating the determining of the probability, until after some number of page repetitions, the probability reaches a prescribed minimum; and reselecting the paging interval for the other wireless system, asynchronous with the paging schemes selected for the one wireless system, and repeating the determining of the probability, until the number of paging repetitions needed to reach the prescribed minimum is reaches a selected minimum.

Claims

1. A method for selecting an asynchronous paging interval comprising:

selecting a set of possible paging schemes for one wireless system;

selecting a paging interval for another wireless system that is asynchronous with the paging schemes selected for the one wireless system; and

the paging interval has to comply with the multiframe structure employed in another wireless system (FIG.

     3) and provides appropriate paging duty cycle to the wireless subscriber;

determining, after some number of paging repetitions, the probability of collision between a first paging channel in the one wireless system, and a second paging channel in the other wireless system for diffrent context switch time;

reselecting the paging interval for the other wireless system, asynchronous with the paging schemes selected for the one wireless system, and repeating the determining of the probability, until after some number of page repetitions, the probability reaches a prescribed minimum; and

reselecting the paging interval for the other wireless system, asynchronous with the paging schemes selected for the one wireless system, and repeating the determining of the probability, until the number of paging repetitions needed to reach the prescribed minimum is reaches a selected minimum.

2. The method of claim 1 wherein said selecting a paging interval for said other wireless system comprises selecting a paging interval that is an integral multiple of a frame employed by the other wireless system.

3. The method of claim 1 wherein said selecting of said set of possible paging schemes for said one wireless system comprises selecting a set of possible paging schemes for a terrestrial wireless communications system.

4. The method of claim 1 wherein said selecting of said set of possible paging schemes for said one wireless system comprises selecting a set of possible paging schemes for a cellular communications system.

5. The method of claim 1 wherein said reselecting said paging interval for said other wireless system, and said repeating said determining of said probability, comprise reselecting said paging interval for said other wireless system, asynchronous with the paging schemes selected for said one wireless system, and repeating said determining of said probability, until after no more than three page repetitions, said probability reaches a prescribed minimum.

6. The method of claim 1 wherein said reselecting said paging interval for said other wireless system, and said repeating said determining of said probability, comprise reselecting said paging interval for said other wireless system, asynchronous with the paging schemes selected for saod one wireless system, and repeating said determining of said probability, until after no more than three page repetitions, said probability reaches zero.

7. The method of claim 1 wherein said reselecting said paging interval for said other wireless system, and said repeating said determining of said probability comprise reselecting said paging interval for said other wireless system, asynchronous with said paging schemes selected for said one wireless system, and repeating said determining of said probability, until said number of paging repetitions needed to reach said prescribed minimum is reaches three or less.

8. A system comprising:

a multihomed wireless transceiver;

a first communications network including a predefined set of paging schemes;

a second communications network including a paging interval that, when a page message is sent by the second communications network to the multihomed wireless transceiver in one paging channel and is repeated at the paging interval, assures that upon a predefined number of page repetitions a prescribed minimum probability of both the page message and all of the repeated page messages being missed by the multihomed wireless transceiver, due to monitoring of another paging channel for the first communications network, is achieved.

9. The system of claim 8 wherein said prescribed minimum probability is zero.

10. The system of claim 9 wherein said predefined minimum number of page repetitions is three.