Browse Prior Art Database

ROAMING NOTIFICATION AND LOCAL SERVICE CONTROL THROUGH SHORT MESSAGE SERVICE

IP.com Disclosure Number: IPCOM000008529D
Original Publication Date: 1998-Mar-01
Included in the Prior Art Database: 2002-Jun-20
Document File: 3 page(s) / 159K

Publishing Venue

Motorola

Related People

Kamala Urs: AUTHOR

Abstract

Roaming is a service that is offered to mobile users on many systems. It can be defined as the capability to receive service on a system other than a subscriber's home system. Roaming charges may apply while a subscriber is roaming; these charges may vary according to service provider and city. In addition, service providers may wish to increase brand name recognition by informing the subscriber of the current service provider; this is sometimes referred to as "branding." Therefore, it is important to be able to inform subscribers of the service provider and/or system currently being accessed.

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m MOTOROLA Technical Developments

ROAMING NOTIFICATION AND LOCAL SERVICE CONTROL THROUGH SHORT MESSAGE SERVICE

by Kamala Urs

  Roaming is a service that is offered to mobile users on many systems. It can be defined as the capability to receive service on a system other than a subscriber's home system. Roaming charges may apply while a subscriber is roaming; these charges may vary according to service provider and city. In addition, service providers may wish to increase brand name recognition by informing the subscriber of the current service provider; this is sometimes referred to as "branding." Therefore, it is important to be able to inform subscribers of the service provider and/or system currently being accessed.

  Services may vary from system to system; the service received while roaming may or may not be a subset of the subscriber's normal service capabilities in the home system. Also, while standards bodies define service parameters which are common across systems (call waiting, call hold, etc.), individual systems may provide proprietary services. In such cases, it is helpful to be able to inform subscribers both about restricted services and about proprietary services and enable them to subscribe to the propri- etary services when accessing a particular system.

This article describes a method of providing

roaming notification, informing subscribers about service capabilities,~and providing control of local proprietary services. The method described is valid for any system offering a Short Message Service (SMS); the iDEN system will be used as a point of reference.

  Short Messages are messages which are sent from a Short Message Service Center (SMSC) to a Subscriber Unit (SU). In iDEN, a generic short message may contain up to 140 alphanumeric char- acters Standards define both mobile terminated and mobile originated short messages, although only mobile terminated short messages are currently available in iDEN.

  In the iDEN system, delivery of mobile termi- nated short messages usually follow this sequence of events:

I. The SMSC receives the message from a variety of inputs (operator, DTMF, etc.)

2. The SMSC queries the Home Location Register (HLR) to determine the current Mobile Switching Center (MSC) serving the subscriber.

3. The SMSC delivers the short message to the appropriate MSC.

4. The MSC pages and authenticates the subscriber, and then delivers the message.

  We can use the mobile terminated SMS to provide roaming and service capability notification, and a combination of mobile terminated and mobile originated SMS to provide local service control. From the subscriber's perspective, the following sequence of events would occur:

1. Subscriber roams into new system

2. SU performs location update, registering its presence.

3. A short message is sent to the subscriber. It might appear as follows:

"Welcome to the Nextel Chicago iDEN system. Due to your particular class of service attributes, a premium will be charged for al...