The Tibet Autonomous Region is located in the southwestern border of China, with an area of about 1.2 million square kilometers. It has unique geographical features, relatively complicated surrounding environment, and a borderline of about 4,000 kilometers. The task of solid-edge stability and anti-secession struggle is relatively heavy. However, due to the influence of geographical environment, natural disasters in Tibet are frequent. Compared with the cross-section and multi-route communication and transportation networks in the Mainland, Tibet's communication and transportation networks are more vulnerable. It is very likely that a single point of failure of a line, equipment, base station or road at a certain location will completely interrupt the communication between a region and the outside world and become an 'information island.' In the event of natural disasters and other roads and communication interruptions, large-scale emergency equipment such as on-board stations cannot enter the disaster-stricken site, which is very difficult for disaster relief communication. Second, in the process of emergency communication support in urban areas, there is a shortage of personnel and ground resources. As a result, the ground line cannot be transferred in time, which seriously affects the emergency communication support task.

Tibet Telecom's wireless ad hoc network communication centered on 'intensive maintenance, improving equipment efficiency, and maintaining service productization'. Zhongxing Tiantong proposed a wireless self-organizing network communication means that is scientific and effective and suitable for Tibet's special geographical environment. On the one hand, the use of emergency communication equipment miniaturization, the use of more convenient, flexible and convenient wireless ad hoc network access equipment and vehicle equipment and other emergency equipment combined networking. In the area where roads are interrupted due to natural disasters, emergency communication services can be quickly opened. On the other hand, emergency communication support in urban areas uses wireless ad hoc networks as access devices, and does not rely on terrestrial transmission lines to avoid long-term ground line scheduling defects. It can easily and flexibly open communication support for emergency services.

In the event of a natural disaster, the road is interrupted, large-scale emergency equipment such as on-board stations cannot enter the disaster site, and it is very difficult to provide disaster relief communication. It is more convenient, flexible and convenient to use wireless communication equipment for miniaturization. Combined with emergency equipment such as satellite vehicle stations, it can penetrate the center or the peripheral area of the disaster area, solve the last mile problem of satellite communication, and open up the “communication island” to quickly open the emergency communication service; during the emergency communication guarantee process in the area, the dispatching process involves With many departments, long coordination time, many computer rooms, many circuit jump nodes, limited ground resources, etc., it is impossible to open emergency services in time, use MESH access equipment, and rely on terrestrial transmission circuits to quickly open emergency services; Establish a multi-point MESH access device that can transmit real-time mobile video.

After the deployment of the IP RAN (A side) device of the 4G network and the BTS of the emergency C network are gradually changed to IP transmission, the MESH device is used to access the IP RAN (A side) device in the vicinity of the security zone to perform the emergency security service. In remote mountainous areas with complex terrain, self-organizing networks can effectively cope with the constraints of the geographical environment. Provide safe and reliable services for communication security in complex environments.