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Enhancing interoperability in heterogeneous mobile wireless networks for disaster response

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5 Author(s)
F. Richard Yu ; Carleton School of Information Technology and the Department of Systems and Computer Engineering, Carleton University 1125 Colonel By Drive, Ottawa, ON, Canada K1S 5B6 ; Jie Zhang ; Helen Tang ; Henry C. B. Chan
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Efficient communications are crucial for disaster response and recovery. However, most current public safety land mobile radio (LMR) networks only provide narrowband voice service with limited support of low-speed data services. In this paper, we study to enhance the interoperability of LMR with commercial wireless cellular networks, by which a wide variety of benefits can be offered to disaster responders, including new multimedia services, increased data rates and low cost devices. Our approach is based on Session Initiation Protocol (SIP) and a joint radio resource management framework. We use a novel SIP- based seamless handoff scheme to support the interoperability between cellular and LMR networks. In addition, an optimal radio resource management scheme is proposed to maximize the overall radio resource utilization and at the same time guarantee service availability and continuity quality of service (QoS) for disaster responders. The effectiveness of the proposed schemes is illustrated by numerical examples.

Published in:

IEEE Transactions on Wireless Communications  (Volume:8 ,  Issue: 5 )