Proposal of shadowing estimation method to improve TCP throughput in road-to-vehicle system

IEICE Electronics Express

Katsutoshi Tsukamoto¹  Ryo Kajiwara¹  Shozo Komaki¹  Masataka Imao¹ 

[1] Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University

关键词: differential power;    intelligent transport systems;    road-to-vehicle communication;    shadowing;    space diversity;    wireless TCP;   

DOI  :  10.1587/elex.3.102

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(8)This letter proposes a new differential power comparison (DPC) method, which accurately estimates the occurrence timing of shadowing at a mobile station (MS) by comparing the differential received power. In a road-to-vehicle TCP/IP communication system, the shadowing causes a lot of packets losses. They result in an extreme low throughput at an MS because packet retransmission increases in TCP layer. Though the technique of Freeze-TCP has proposed to overcome this problem, it must require an accurate estimation of shadowing with round trip time (RTT) in a road-to-vehicle communication (RVC) network. Computer simulations show that DPC method with 3 diversity antennas can estimate the occurrence timing of shadowing in high accuracy.

【 授权许可】

Unknown