Base storage of handset's base registrations

• US 5,509,052 A
• Filed: 05/25/1994
• Issued: 04/16/1996
• Est. Priority Date: 05/25/1994
• Status: Expired due to Fees

• Current Assignee: Allergan SPA (Abbvie Incorporated)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Tsang, Simon M. L., Chia, Song C.
• Primary Examiner(s): Bost, Dwayne D.
• Application Number:
  US08/248,971
• Time in Patent Office: 692 Days
• Field of Search: 379/58, 379/60, 379/61, 455/33.2, 455/54.1, 455/54.2
• US Class Current: 455/465
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 8/205 Transfer to or from user equipment or user record carrier

Abstract

A CT-2 base'"'"'s intelligence (36) is enhanced by having a handset (12) transmit (418) its base registration history to the base station (24) such that the base can determine (724) whether the handset is correctly registered. The handset (12) requests (606) a link with any one of the previously registered base stations recorded in the base registration history by transmitting a link request containing the handset ID and any one of the previously recorded base IDs from the base registration history. This single base ID need not necessarily be the base station identification of the currently registered base station. The base station then determines (724) whether the one base station identification matches one member of the base registration history for the associated handset identification. In response to a match, the base transmits (712) the link grant to the handset.

Claims

1. A method of CT-2 handset link establishment for use in a CT-2 handset currently registered with one or more previously registered base stations, the method comprising the steps of:

transmitting a handset ID to a non-registered base station;

receiving from the non-registered base station a base ID corresponding to the non-register base station;

transmitting to the non-registered base station an updated list of the one or more previously registered base stations of the handset;

requesting a link with any one of the one or more previously registered base stations by transmitting to the non-registered base station a link request, the link request containing the handset ID and one base ID, the one base ID corresponding to the one or more previously registered base stations from the updated list of the one or more previously registered base stations, the one base ID not necessarily a base station identification corresponding to the non-registered base station; and

establishing a communications link between the handset and the non-registered base station.

2. A method of allowing a handset to place a call from a currently non-registered base station in a CT2 communication system, the method comprising the steps of:

in the handset;

storing a handset identification;

manually keying up a non-registered base station and providing the handset identification to the non-registered base station;

receiving a base identification from the non-registered base station;

adding the base identification to a stored history list of all previously registered base station identifications to transform the base station status to a currently registered base station;

transmitting to the currently registered base station an updated history list of all previously registered base station identifications and a base station identification corresponding to the currently registered base station;

transmitting a link request to establish a link between the handset and any one of the previously registered base stations, the link request containing the handset identification and one base station identification corresponding to any one base station included in the updated history list of all previously registered base station identifications, the one base station identification not necessarily the base station identification of the currently registered base station; and

receiving at the handset from the currently registered base station a link grant to establish a link from the handset to any one of the previously registered base stations to enable the handset to place the call from the currently registered base station; and

in the base station;

storing the base station identification;

universally registering the handset identification with the base station in response to the handset identification;

receiving the updated history list of all previously registered base station identifications from the handset;

storing and associating the handset identification with the updated history list of all previously registered base station identifications;

receiving the link request containing the handset identification and the one base station identification;

determining whether the one base station identification corresponds to one member of the updated history list of all previously registered base station identifications for the associated handset identification; and

in response to a match from the determining step, transmitting the link grant to the handset.

3. The method of claim 2, including the step of referencing all of the previously registered base station identifications to a single user-defined base representation.

4. A method of allowing a handset to place a call from a registered base station without having to select the registered base station and use the particular base identification as the link ID during link request in a CT2 communication system, the method comprising:

registration steps of;

in the handset;

storing a handset identification;

manually keying up a non-registered base station to be in the registration mode, to scan for registration link identification;

transmitting to the non-registered base station a registration request using a registration link identification;

receiving a base identification from the non-registered base station upon successful registration;

adding the base identification to a stored history list of all previously registered base station identifications to transform the non-registered base station to a currently registered base station;

referencing all previously registered base station identifications to a single user-defined base representation; and

transmitting an updated history list of all previously registered base station identifications with the base identification of the currently registered base station;

in the base station;

storing the base identification;

receiving the registration link identification from the handset and providing the non-registered base station identification to the handset for storage;

receiving the updated history list of all previously registered base station identifications from the handset; and

storing and associating the handset identification with the updated history list of all previously registered base station identifications;

Call Set-Up steps of;

In the handset;

requesting a link with any one of the previously registered base stations by transmitting a link request, the link request containing the handset identification and one base station identification from the history list of all previously registered base station identifications, the one base station identification not necessarily the base station identification of the currently registered base station; and

receiving a link grant from with any one of the previously registered base stations to enable the handset to place the call from the one of the previously registered base stations; and

in the base station;

receiving the link request containing the handset identification and the one base station identification;

determining whether the one base station identification matches one member of the updated history list of all previously registered base station identifications for the associated handset identification; and

in response to a match from the determining step, transmitting the link grant to the handset.

5. The method of claim 4, further comprising the handset Call Set-up step of transmitting an updated history list of all previously registered base station identifications with the handset identification and the base Call Set-up step of receiving the updated history list of all previously registered base station identifications with the handset identification.

6. A CT-2 base station comprising:

memory for storing it'"'"'s own base station identification and an updated history list of all base stations previously registered to a handset;

a receiver for receiving a link request from the handset, the link request containing the handset identification and one base station identification, the one base station identification not necessarily it'"'"'s own base station identification; and

a controller for associating all of the base stations with which the handset previously registered to the handset and determining whether the one base station identification matches an identification for one member of the updated history list of all previously registered base stations for the associated handset identification.