Reducing Packet Delay and Loss in Heterogeneous Mobile Wireless Networks

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Executive Summary

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 due to the packet delay and loss and less resource utilization. So high resource utilization techniques are needed. The Session Initiation Protocol (SIP) and a joint radio resource management framework is a current technology to support the interoperability between cellular and LMR networks. SIP is seamless handoff scheme.

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