Abstract
The third generation(3G) wireless network is envisaged as the next generation wireless solution for meeting the demand of its users. It promises to provide wireless access to multimedia applications at rates upto 2Mbps. But the problems of intermittent disconnection, high error rate in wireless networks can cause degradation of protocols and compromise the QoS (Quality-of-Service) guaranteed to the users. So, there is a need for adaptive protocols, which, on determining the current adverse wireless network conditions, adapt themselves in order to overcome these changes and reduce their effect. Our focus in this work has been to design adaptation techniques for media access control (MAC) protocol since their capability to adapt to the adverse effects of wireless conditions can make the high-level network protocols less susceptible to the changes in the wireless conditions. We have chosen SMPT (Simultaneous MAC Packet Transfer) technique for our study. Our results show that there is increase in throughput using the adaptive techniques mentioned in this report.
Introduction
One of the driving forces of the next generation of wireless communication and
computing networks is the promise of high speed multimedia services. Third
generation(3G) systems, such as the International Mobile Telecommunication System
2000 (IMT-2000) network (formerly known as the FPLMTS-- Future Public Land
Mobile Telecommunication System) and the Universal Mobile Telecommunication
System (UMTS), promise to provide multimedia services to mobile and fixed users via
wireless access to the global telecommunications infrastructure. The IMT-2000 is a
universal, multifunction, globally compatible digital mobile radio system that plans to
integrate all traffic types and all wireless systems under a common set of formats. The
UMTS is a similar global wireless solution, and is being standardized by the Europe by
the European Telecommunications Standards Institute (ETSI). The 3G systems are
expected to be deployed by 2003. Among the requirements for the third generation
systems is the ability to support multimedia traffic.
Ultimately, 3G is expected to include capabilities and features such as:
•Enhanced multimedia (voice, data, video, and remote control)
•Usability on all popular modes (cellular telephone, e-mail, paging, fax,
videoconferencing, and Web browsing)
•Broad bandwidth and high speed (upwards of 2 Mbps)
•Routing flexibility (repeater, satellite, LAN)
•Operation at approximately 2 GHz transmit and receive frequencies
•Roaming capability throughout Europe, Japan, and North America


Download full report
http://googleurl?sa=t&source=web&cd=1&ve...t-jain.pdf&ei=JqhETvWcCsjyrQfs34HoAw&usg=AFQjCNG3Sc38kds5_-1zNxG0pvJZfIfCOw&sig2=bzC2KNR8U_7MGNeqXMmkKQ