Defense, Dissertation Proposal
By: Chi-Tung Chen
Advisor: Dr. Sirin Tekinay
Time: 2:30 PM, Thursday, December 9th, 2004
Place: Room 202, ECE Center, New Jersey Institute of Technology (NJIT), Newark NJ. Directions

 

Abstract

Provisioning of quality of service (QoS) for multimedia traffic in wireless networks is complicated due to user mobility and limited wireless resources. Next generation system will evolve to those that include dynamic adaptation to traffic and QoS needs. Moreover, mobile terminals (MTs) in wireless environments rely on their limited battery energy for proper operation. To avoid the need for frequent recharge of a portable device and the possible limitation in communication capability, energy efficiency and battery life will be continuously a concern in next generation cellular system. In the presentation, based on different design criterions, three different QoS constrained cellular ad hoc augmented network (CAHAN) architectures are proposed for next generation wireless networks. The CAHAN architectures are proposed to find the optimal minimum-power routes or to achieve the maximum network lifetime under the QoS constraints (bandwidth, packet-delay, or packet-error-rate constraint). The network lifetime is defined as the time at which an MT runs out of its battery energy for the first time within the entire network. CAHAN has a hybrid architecture, in which each MT of CDMA cellular networks has ad hoc communication capability. CAHAN is an evolutionary approach to conventional cellular networks. The proposed CAHAN architecture has good system scalability and high system reliability.