Abstract
Wireless multimedia networks are becoming progressively popular, that provide the mobile phone users to accommodate the access of information and services at any time, any place with different configurations that user's desire. Long Term Evolution (LTE) is one of the quickest developing technology which support a variety of applications like video conferencing, video streaming, VoIP, file transfer, web browsing etc. Radio Resource Management (RRM) procedure is one of the key configuration part for enhancing the system performance. The admission control is one of the Resource management mechanisms, the task of admission control is to admit or reject the establishment request for the new session. In this chapter, we will provide an overview of the resource management and analyze the Media Degradation Path (MDP) and non MDP based admission control algorithms in the LTE network and compare the session establishment success. This chapter also enables for reader to know the current and future trend of research on resource management of multimedia services in LTE networks.
TopIntroduction
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.
Key Terms in this Chapter
Resource Block (RB): A Resource Block (RB) is a time- and frequency resource that occupies 12 subcarriers (12 x 15 kHz = 180 kHz) and one slot = 0.5 ms).
3G Technology: 3G technology refer to third generation which was introduced in year 2000s.Data Transmission speed increased from 144kbps- 2Mbps.It provide Superior voice quality and Good clarity in video conference E-mail, PDA, information surfing, on-line shopping / banking, games, etc. This was followed by 3.5G, 3G+ or turbo 3G enhancements based on the high-speed packet access (HSPA) family, allowing UMTS networks to have higher data transfer speeds and capacity.
1G Technology: 1G refers to the first generation of wireless telephone technology; mobile telecommunications which was first introduced in 1980s and completed in early 1990s .It is based on analog system. It’s Speed up to 2.4 kbps and Allows user to make voice calls in 1 country. AMPS (Advance Mobile Phone System) were launched by the US & it was the 1G mobile systems.
4G Technology: The next generations of wireless technology that promises higher data rates and expanded multimedia services. Developed in 2010. Its Speed up to 100 Mbps. Provide any kind of service at any time as per user requirements, anywhere.
Quality of Service (QoS): QoS is characterized as “totality of characteristics of a telecommunications service that bear on its capacity to fulfill expressed and inferred needs of the user of the service.”
Quality of Experience (QoE): QoE is defined as “the general agreeableness of an application or service, as perceived subjectively by the end-user.
2G Technology: 2G technology refers to the 2nd generation which is based on GSM. It was launched in Finland in the year 1991. 2G network use digital signals. Its data speed was up to 64kbps.Features Included in 2G technology is: It enables services such as text messages, picture messages and MMS (multimedia message).It provides better quality and capacity. 2G are the handsets we are using, with 2.5G having more capabilities.