Performance Study of Co-path Transmission in Multi-channel Wireless Mesh Control Network
Hu Le · Science Technology and Engineering · 2015
Aiming at the problems of the unstable links and node interferences,which lead to loss of data and communication delay in wireless Mesh control network,the co-path transmission method based on multi-channel is presented. Multiple orthogonal channels and interfaces are expanded firstly in this method,and graph theory is used to realize channel assignment strategy for reducing the interference between nodes. Then packets will be transmitted simultaneously on two link disjoint paths for overcoming the instability of wireless links. So the real-time and reliability of control date in transmission is enhanced by means of methods mentioned above. The simulation results show that,compared with traditional single-path transmission,this method can effectively improve control data's reliability and real-time capability when the sending rate is in a certain range.