Abstract: In view of the short transmission distance of the existing emergency communication equipment, complex system deployment, and rear command and dispatch settings, this paper proposes a portable width and narrow fusion emergency communication command system applied to the emergency rescue site in combination with the current width and narrow fusion cluster scheme and portable emergency communication equipment. The system adopts PDT+LTE solution and soft switch technology based on SIP to realize the unified management of broadband and narrowband cluster users, mixed call, multimedia cluster scheduling and other integrated services. The results show that the system has the characteristics of integrating width and narrowness, integrating communication and dispatching, self-supplied power, portable, pull and use, free deployment, and covers an area of 15~20 km. At the same time, the system can also use the LTE private network base station plas the backpack-type Mesh remote scheme to expand the area of accident rescue, ensure rescue communication, and realize the two-level distributed scheduling between the accident site and the front command and rear command.

Key words: emergency rescue, fusion communication, AAVIB algorithm, LTE + Mesh ad-hoc network