| 5G communication face an ocean of challenges about big scale,high density,ultra-high speed and low time delay.D2 D for 5G can mitigate the pressure of base station.Meanwhile,Wireless Sensor Network has been applied in various areas like ranch,campus,museum,home.Thus WSN and D2 D will possess irreplaceable position in heterogeneous network.Cooperative communication is applied in multi-hop network and it can increase the reliability in p2 p by searching helper node for help.Cooperative communication has less influence on original network scheme,less overhead and higher reliability of transmission.Absolutely it is a potential communication technology,but when and how to start cooperation are key points.In this paper,a new TDMA-based cooperative MAC scheme is proposed,the mainly content and contribution is:(1)Proposed a new TDMA based opportunistic cooperative relay MAC scheme which can be applied on multi-hop network.This network contains source node,destination node,relay node,helper node.TDMA scheme is applied in one interference field and source node will broadcast relay packet.Each Buffer has finite capacity with FIFO scheme.Then we proposed an scheme that helpers would help forward packets to promote the throughput of system.Both the theoretical analysis and simulation results derived in this paper which show attractive performances.(2)This TDMA-based opportunistic cooperative relay MAC scheme research the channel situation,capacity of buffer and number of helper node respectively.We analysis the throughput of whole system,and derive the expression of performance as well as the curve of simulation.We propose a TDMA-based opportunistic cooperative relay MAC scheme,which take opportunistic communication into cooperative relay network.This scheme base on conventional system model and we analyze the performance which shows an excellent result.Network transmission capability get promoted.In addition,this paper proposed an idea to solve problem about the system model this paper used. |
PDF Full Text Request