Computer Science ›› 2017, Vol. 44 ›› Issue (6): 102-107.doi: 10.11896/j.issn.1002-137X.2017.06.018

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Research on Performance of Cooperative Communication Based on Constrained Area Relay in VANET

YE Xiang, ZHANG Guo-an and WU Min   

  • Online:2018-11-13 Published:2018-11-13

Abstract: The effect of cooperative communication on network performance in wireless vehicular Ad Hoc network (VANET) was studied.Relay involved in the communication can enhance the reliability of the single-link transmission.However,most studies ignored the detrimental effect of the enlarged interference range due to relay transmissions.The enlarged interference range can block the transmission of its neighboring link.we constructed a diamond-shaped relay selection region to restrict the detrimental effect of the enlarged interference range due to relay transmissions,developed a theoretical performance analysis method for cooperation in VANET and obtained the mathematical expression of outa-ge probability and network throughput.Numerical analysis and simulation results show that cooperative communication can significantly reduce the probability of communication outage,but it is not always beneficial for the throughput performance of the whole network.The size of relay selection region can be set to improve the network throughput.

Key words: VANET,Cooperative communication,Spatial diversity,Spatial reuse,MRC

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