Research on network topology structure based on 5G+MESH ad hoc network technology

The "5G+MESH" intelligent terminal equipment proposed in this paper has the characteristics of self-organization, self-robustness, low latency, high speed and large bandwidth, safety and reliability, etc. It can solve the communication service problems in areas with incomplete network signal coverage, combined with 5G access management Platform that provides low-cost, high-bandwidth, high-reliability voice, data, picture and video link solutions. This paper proposes intelligent frequency modulation, forwarding and routing technology. Each Mesh node has multiple radio frequency modules, which work in different frequency bands, which solves the problem of single Radio node sending and receiving co-channel interference. Each node automatically selects the best route to send or forward data packets, fully consider the performance of different RF modules/channels on each node, and take advantage of multiple frequency bands to improve network throughput and multi-hop performance and transmission stability sex. The characteristics of wireless transmission determine that its link packet loss rate cannot be the same as that of wired networks. However, due to the multi-hop characteristics of wireless MESH networks, the cost of packet loss and retransmission is amplified to some extent. Mesh intelligent forwarding technology adopts intelligent link retransmission strategy according to real-time network status, which effectively avoids retransmission caused by packet loss at the link layer and reduces the packet loss rate of multi-hop links. Mesh uses a multi-factor routing optimization algorithm to synthesize link information, node status, location, moving speed and other influencing factors to predict link status, effectively improve the self-recovery speed when the link fails, and achieve a more seamless mesh network connection. Mesh also adds a flexible routing management framework at the routing protocol layer. According to different application scenarios and business requirements, different routing algorithms and strategies can be loaded through simple deployment.