An Opportunistic Routing Method for Improving Communication Network Reliability
A communication network and reliability technology, applied in the field of communication, can solve problems such as signal attenuation, noise interference, time-varying and suddenness of signal transmission errors
Active Publication Date: 2020-04-17
STATE GRID HEBEI ELECTRIC POWER CO LTD +2
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Problems solved by technology
[0007] The above technologies can well adapt to the PLC network to meet the needs of users. However, due to the signal attenuation, noise interference, impedance matching and other problems in the power line channel, the signal transmission error has the characteristics of high probability, time-varying and sudden.
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[0062] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0063] The invention discloses an opportunity routing method for improving the reliability of a communication network, comprising: a static perception process of a power line network topology; routing selection from a source node to a destination node; selecting a relay set for a node on a determined path; Prediction of node reliability based on HMM model; determine relay priority according to node reliability; use CSMA-CA cooperation mechanism to forward data packets. The present invention is suitable for solving the problem of reliable packet transmission in the power line scene, can effectively reduce the times of packet transmission, and can reduce transmission time delay and improve transmission efficiency under the condition of low node reliability.
[0064] see figure 1 A method of opportunistic routing for improving communica...
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The present invention provides an opportunistic routing method for improving the reliability of a communication network, which includes sensing the topological structure of the entire network; selecting designated routing paths for network source nodes and destination nodes according to the topological structure of the network; The remaining nodes other than select the node relay forwarding set; calculate the node reliability probability on the specified routing path; determine the forwarding node in the node relay forwarding set according to the node reliability probability and the relative hop count of the sending node The forwarding priority; use the CSMA-CA multi-point coordination mechanism to start forwarding the data packet from the source node until the destination node correctly receives the data packet. The opportunistic routing method for improving the reliability of the communication network provided by the present invention can reduce the number of data packet transmissions, reduce the transmission delay of the data packet, and solve the communication reliability problem in the power line communication network scene.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to an opportunistic routing method for improving the reliability of a communication network. Background technique [0002] With the rapid development of network technology and communication technology in recent years, the degree of automation and informatization of smart home networks is getting higher and higher. At the same time, this also puts forward higher requirements and challenges to the flexibility, security and reliability of the home network. It is foreseeable that every family in the future will be a networked and informationized family. Every family uses high-speed digital communication lines externally, such as ADSL (Asymmetric Digital Subscriber Line), FTTH (Fiber To The Home), RLL (Radio in the Local Loop), etc. to connect to the Internet through a home gateway, and there is a home server inside to control the functions. Various information appliances and hom...
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IPC IPC(8): H04L12/721H04L12/751H04W40/14H04W40/22H04W40/24H04L45/02
CPCH04L45/026H04L45/123H04W40/14H04W40/22H04W40/248Y02D30/70
Inventor 臧志斌林大朋付卫东唐如意臧艳伟王道远
Owner STATE GRID HEBEI ELECTRIC POWER CO LTD