MESH net ad hoc network method based on dynamic perception and frequency hopping transmission

Abstract

The invention relates to an MESH net ad hoc network method based on dynamic perception and frequency hopping transmission, which comprises an ad hoc network algorithm. The handshaking process for the ad hoc network algorithm is divided into five steps: RTS-CTS-DS-DATA-ACK, the ad hoc network algorithm needs at least two channels in a link layer, the two channels comprise one control channel and one to many data channels; an RTS packet, a CTS packet and a DS packet are transmitted via the control channel, a DATA packet and an ACK packet are transmitted via the data channels, and when the data packets are short, packet exchange is carried out via the DATA-ACK, and when the packets are long, a channel is reserved via the RTS-CTS. Time consumed for the ad hoc network can be reduced, the network bandwidth is added, the data packet transmission rate is improved, and parallel data transmission is realized; the method can carry out real-time monitoring on the network topology structure and a quick response is made according to network changes; and data packet transmission at an adaptive rate is realized.

Description

technical field [0001] The invention relates to the technical field of MESH network ad hoc networking, in particular to a MESH network ad hoc network method based on dynamic perception and frequency hopping transmission. Background technique [0002] At present, the wireless ad hoc network methods mainly include IEEE802.15.4, IEEE802.11, BLE and other protocols, but in the field of MESH network ad hoc network technology, no effective solution has been proposed for the networking algorithm of the MESH structure, and the Mesh network is " "Wireless Mesh Network", which is a wireless multi-hop network, is developed from the adhoc network and is one of the key technologies to solve the "last mile" problem. Wireless is an indispensable technology during the evolution of next-generation networks. Wireless mesh can communicate with other networks cooperatively, and has a wide range of applications. [0003] The traditional MESH structure networking algorithm has the following dis...

AI Technical Summary

Problems solved by technology

[0003] The traditional MESH structure networking algorithm has the following disadvantages in the process of ad hoc networking: (1) it takes a lot of time; (2) in the process of network data transmission, it is often affected by the bandwidth, making The transmission rate is greatly limited; (3) Data transmission and communication handshake are carried out in the same channel, and data cannot be transmitted in parallel; (4) It is impossible to monitor the network topology in real time and respond quickly to network changes ; (5) Unable to adapt to the rate, select and switch the appropriate transmission rate according to the channel state