Information Synchronisation Method for Mobile Communication Systems Based on Distributed SDN
To address the issue that the information synchronization overhead of the current popular Software De-fined Network(SDN)inter-controller information synchronization method is high and exceeds the wireless channel load capacity of the device,the paper proposes an information synchronization method that is more reliable,adapts to multi-channel coexistence,and has less information synchronization overhead.This method is based on the planar link-state routing protocol Open Shortest Path First(OSPF).This approach streamlines the software processing flow,eliminates the multi-area mechanism that causes the OSPF protocol area confusion caused by node mobility,adapts the OSPF protocol from traditional IP networks to SDN networks by optimizing protocol messages,and lowers informa-tion synchronization overhead by shortening message length and avoiding redundant synchronization data.The experi-ment demonstrates that the message synchronization technique can precisely synchronize data between controllers,and the message convergence process only generates an average message synchronization overhead of 0.721 kB/s per port received and 0.873 kB/s per port forwarded when the size of the mobile communication system is 1:2:4,matching the load capacity of 78.125 kB/s on average for wireless broadband and 2.4 kB/s on average for ultra-shortwave,meeting the requirements of the distributed SDN-based mobile communication system.
Information synchronisationMobile communication systemsSoftware defined networkOSPF
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