A high-definition audio and video ad hoc network data interaction system based on 230mhz wireless private network

Abstract

The invention discloses a high-definition audio and video ad hoc network data interaction system based on a 230MHz wireless private network. The control plane is used to complete node control, including admission / authentication / topology maintenance / user plane parameter negotiation; the user plane is used for Complete the transmission of user data on the air port / network port; the management plane is used to complete the configuration management of the device itself and the air port / network port parameters / performance index reporting / log maintenance channel establishment; use TDMA technology to customize the MAC layer protocol, and use DFT ‑S‑OFDM technology designs the physical layer, builds the network topology structure connected to the terminal through the ad hoc network based on the link layer, realizes time division, single frequency point two-way switching, realizes the ad hoc network and two-way transmission; based on multi-carrier technology and Combined with the H.265 video codec scheme to simultaneously transmit audio, video and IP streaming data. The present invention greatly improves the utilization efficiency of 230MHZ low-frequency band resources. A low-frequency and high-bandwidth internal communication network with advanced reliability, security and encryption, and anti-interference can be quickly built on the job site.

Description

technical field [0001] The invention belongs to the technical field of networking, and in particular relates to a high-definition audio and video ad hoc network data interaction system based on a 230MHz wireless private network. Background technique [0002] At present, the State Grid Corporation of China mainly uses the 230MHz frequency band for power digital radio station communication and terminal data collection (one-way). The bandwidth of digital radio stations is often less than 1Mbps, and it is impossible to realize high-definition audio and video, and real-time interactive transmission of Ethernet data (two-way). Considering the scarcity and limitation of radio spectrum resources, the company urgently needs to use new advanced technologies to improve the use efficiency of the authorized 230MHz frequency. In 2016, State Grid and Potevio jointly researched and built a pilot application of electric power wireless private network in Haiyan District, Jiaxing, Zhejiang bas...

AI Technical Summary

Problems solved by technology

[0002] At present, the State Grid Corporation of China mainly uses the 230MHz frequency band for power digital radio communication and terminal data collection (one-way). The bandwidth of digital transmission stations is often less than 1Mbps, and it is impossible to realize high-definition audio and video, and real-time interactive transmission of Ethernet data (two-way).

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