Light-weight internet protocol multimedia subsystem (IMS) client: development for smart mobile devices

Abstract

In recent years Internet usage and services, accessed through both fixed and mobile networks, have experienced rapid growth. This growth was driven by the capability of the Internet to provide many new services seamlessly to the users at any time. These Internet services continue to grow because the open protocols used are available on the web to any service developer (Camarillo & García-Martín, 2006:5). It is estimated that there are over one billion cellular users worldwide (Castro, 2004:1). As the number of cellular users continues to grow, more efforts are made to draw the cellular technology closer to the all-IP telecommunication technologies that offer Quality of Service (QoS) to users, and appropriate charging schemes for multimedia services to network operators. With Internet Protocol (IP) becoming spreading through in the backbone, the challenge of integrating voice and data services in the fixed and mobile environments becomes more formidable (Castro, 2004:5).