Resource Management for Multimedia Services in Long Term Evaluation Networks

Introduction

Wireless multimedia networks are becoming progressively popular, which provide the mobile phone user to accommodate of access to information and services at any time, any place and in any configuration with user desire and due to demand of high speed internet and growing wireless multimedia communication systems, future communication systems are expected to transmit large amount of multimedia traffic such as video, voice and text with a variety of Quality of Service (QoS). The important issue for future communication systems and upto certain extend in current communication system is the time and frequency being used for scarce resources and the requirement of QoS for multimedia applications which are sensitive in nature. Long Term Evolution (LTE) is one of the fastest growing technology which supports a variety of applications like video conferencing, video streaming, VoIP, file transfer, web browsing etc. In order to support multiple applications, radio resource management (RRM) procedure is one of the key design that has a role in improving the system performance. Long Term Evolution (LTE) establishes a significant milestone in the evolution of 3G systems towards the fourth generation (4G) technologies. The expanding utilization of complex multimedia services requires an advanced resource management mechanism in particular in wireless network environment. The mechanism that is responsible for managing and controlling radio resources are known as resource management. The admission control is one of the resource management mechanisms, and task of admission control is to admit or reject the establishment request for the new session.

The performance targets promised by LTE, make it an ideal solution to accommodate the ever increasing demand for wireless broadband. LTE's promised performance targets were made possible due to improvements such as implied system access architecture and a fully IP-based platform. LTE has also great enhancements in its enabling radio technologies by introducing orthogonal frequency division multiplexing (OFDM) and advanced antenna technologies (Astély et al., 2009). In addition, LTE capabilities are further improved with enhanced Quality of Service (QoS) support for multiple data services, such as voice and other multimedia applications.

The main challenges in 3G, 4G and in next generation cellular networks are maintaining the quality of service (QoS) requirements for each class of the multi-service traffic in the presence of the limited radio resources (Ghaderi & Boutaba, 2006). The components that are in-charge of over-seeing and controlling the radio resources are known as radio resource management (RRM). The procurement of wireless multimedia services to mobile users with a certain quality of service, force stringent necessities on the configuration of radio resource systems. Admission control for wireless system has been generally concentrated on under distinctive system architectures and systems heads approaches.