Browse Prior Art Database

CONTROLLED NOMADIC OPERATION OF SUBSCRIBERS

IP.com Disclosure Number: IPCOM000009543D
Original Publication Date: 1999-Sep-01
Included in the Prior Art Database: 2002-Sep-02
Document File: 2 page(s) / 109K

Publishing Venue

Motorola

Related People

Tom Weston: AUTHOR

Abstract

If the user profile of a communication system subscriber was not fixed to a specific hardware solu- tion, then "dedicated homers" would be free to become roamers and roamers would be free to become "homers." Transferable user profiles offer subscribers with the flexibility to roam to other communications systems or stay at home. It also means fewer subscriber models are needed to meet the consumer market demands, since one flexible subscriber meets the needs of both types of users.

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0 MOTOROLA Technical Developments

CONTROLLED NOMADIC OPERATION OF SUBSCRIBERS

by Tom Weston

ABSTRACT

  If the user profile of a communication system subscriber was not fixed to a specific hardware solu- tion, then "dedicated homers" would be free to become roamers and roamers would be free to become "homers." Transferable user profiles offer subscribers with the flexibility to roam to other communications systems or stay at home. It also means fewer subscriber models are needed to meet the consumer market demands, since one flexible subscriber meets the needs of both types of users.

THE PROBLEM WITH TYPICAL SUBSCRIBER UNITS

  Communications system users that do not roam outside of a system's boundaries have user protiles programmed into a subscriber unit. The physical limitations of protocol and frequency of the sub- scriber unit dictates which communications system the user can operate. Users that want the capability of nomadic operation outside communications sys- tem limits must utilize a portable device such as a Subscriber Identification Module (or SIM) card even if they never roam. It's clear that the sub- scriber hardware dictates the mobility of the user. Users that have a profile fixed within a subscriber unit can never roam outside the communications system limits unless they change the hardware ele- ments of the subscriber. Those that have user pro- files fixed in SIM cards fear loss or use fraud.

A FLEXIBLE ROAMING SOLUTION

  If the user profile were not fixed to a specific subscriber hardware solution, then "homers" could transform into roamers and roamers could transform into homers whenever they wanted. This solution allows the user profiles to be transferred from within the subscriber hardware and into a user specific SIM card, allowing fixed users to become roaming users. The SIM card can then be transported to another subscriber unit. This means that a user can roam either to other subscriber units on the same commu- nications system or onto other compatible communi- cations systems.

  Please refer to Figure 1 for an illustration of the following explanation. When the user profile is in the non-roaming mode, it is situated within the sub- scriber unit, and the SIM card is inoperative or its memory is "blank." When the user profile has been successfully transferred to the SIM, the subscriber unit can only be used when the SI...