Research On Caching Technology And Channel Allocation Technology Based On Power Line Communication Network

The establishment of Smart grid is based on the various electronic devices.Smart Grid is a new type of Power grid,combining advanced sensor technology,communication technology,control technology and intelligent scheduling technology with traditional PLC network.With comprehensive popularization of smart grid in recent years,The demands for high-speed development of related technology are urgent.There are several side-effects when power l:ine is used as the communication media in Smart Grid,such as multipath effect,signal attenuation,impulsive noises,which bring challenges to the development of related technology in Smart Grid.These side-effects surely result in power line communication system can not achieve a high capacity and reliability.(1)To study the influences of Transmitter Diversity on PLC communication capacity in coordinated multiple relays system.A PLC-MIMO communication system is established.Based on this model,the optimal base station power line selection technology is created.The simulation results show that under the condition of multi-base station and multi-cell,the method of Transmitter Diversity can effectively improve the channel capacity of this system.(2)In order to study the impact of the introduction of caching mechanism on system energy consumption in coordinated multi-base station condition.A model is proposed in which data service is provided by some cache-enabled relay base stations in the form of JP(Joint Processing).For the purpose of minimizing total energy consumption,simulation provides the analysis of consumption comparison between base station energy and backhaul energy.It can be seen that the introduction of caching mechanism can largely save system energy.(3)Based on the topology of an in-home PLC network,we design a sub-channel allocation algorithm with OFDM scheme.Compared with other algorithm,it fully takes into account constraints of the network topology,interference and traffic fairness.Simulation demonstrates that the proposed approach performs better in improving overall network throughput and ensuring the traffic fairness of users than conventional ones.