Jarkko Sevanto

Multimedia messaging service for GPRS and UMTS

Mobile telecommunications networks will evolve to a great extent in the future. They will offer higher data rates and provide new services for nomadic users. The development of packet switched data bearers for 3/sup rd/ generation wireless networks will enable support for multimedia applications as well. Multimedia can be divided into real-time and non-real-time services. In this paper we concentrate on a new non-real-time multimedia service called multimedia messaging service (MMS). Multimedia messaging service allows mobile subscribers to exchange arbitrary types of information in a store-and-forward manner. Multimedia messages may consist of text, images, audio or video clips, or any combination of these. A new network element called multimedia messaging service center is needed for storing and forwarding the messages. We describe in more detail what we mean by multimedia messaging service. We also analyze the different architectural options for supporting multimedia messaging within UMTS (Universal Mobile Telecommunications System) and GPRS (General Packet Radio Service for GSM) networks.

Introducing quality-of-service and traffic classes into wireless mobile networks

1. ~STWCT Rwent developments in wireless conummimtions have made it possible to provide mtitimedia services for mobtie users. However, mtitimedia servic~that is a m-e of different content ~es including te~ images, audio, and vide=ver wireless W require that the underlying wireless infrastructure supports some kind of Q@tyof-Service concepts and Werent trtic classes. Since many of the current wireless technologies do not support those concepts, we introduce a way of adapting mobtie wireless networks so that some aspects of Qutity-ofService and traffic classw -be supported even if the underlying infrastructure does not support them. Our Nlobfle Network Adapters can overcome most of the titations due to protocol architectures. However, they m not augment the physid characteristic of the underlying technology but they try to use the avtiable resources in the most appropriate way. Our prototype implementation indicates that priori@based mtitipletig of traffic is useti for delivering rd-time and non-rdtime data to and from a mobde terminal. Our solution is able to support both seandess and