5441336596

UPPSALA

UNIYERSITET

Abstract

Home Location Register (HLR) dedicated for Short Message Seryice (SMS)_

Niklas Rónnblom and Johan Vikman

Teknlsk- natunsetenskaplig fakultet UTH-enheten

Besdksadress:

AngstrOmlaboraloiiet Lagerhyddsvagen 1 Hus 4, Plan 0

Postadress:

Box 536 751 21 Uppsala

Telefon:

018 - 471 30 03

Telefax:

018 - 471 30 00

In telecommunication a Home Location Register (HLR) is used for keeping track of subscriber data for a multitude of services, including Circuit Switched (CS) calls, Short Message Service (SMS), and morę.

To support all functions, about 50 different complicated operations must be supported. This requires large sets of resources, both in time to implement and in capacity when in use.

However, there are applications, for example vending machines, for which SMS is the only service needed to be supported. The goal of this thesis is to implement an HLR prototype, to explore the real-time characteristics of a subset of the HLR database operations required to support SMS only. The prototype that we build and test, adheres to the standards specified by 3GPP. It is also much easier to configure and maintain than a conventional HLR, because it only supports one function. Most implementation was done using Erlang, a concurrent soft real-time programming language widely used in telecoms.

httpi/Awww.teknal.uu.se/studenI

Handledare: Lars Kari Amnesgranskare: Olle Gallmo Examinator: Olle Eriksson IT 13 025

Sponsor: Mobile Arts

Tryckt av: Reprocentralen ITC