What is it about?
In vehicular relay networks, the quality of communication link has a significant impact on the stable and reliable communication requirements. We have studied the link connectivity in vehicular relay networks based on carrier sense multiple access with collision avoidance (CSMA/CA) considering the relationships among vehicle density, vehicle speed, packet collision probability and relay probability.
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Why is it important?
In complex mobile scenarios, vehicle density is proportional to relay probability, while proportional to data packet collision probability. Meanwhile, vehicle density and packet collision affect the quality of communication link in the relay network. Firstly, the relationships among vehicle density, vehicle speed, packet collision probability and relay probability are studied in relay communication. Secondly, due to the high speed movement of vehicles, an analysis model, considering the mobility of vehicle nodes, is conducted to analyse the downlink performance in relay communication networks. Finally, a platoon scheme is proposed to reduce packet collision probability, considering the vehicle density and backoff window size on vehicle-to-roadside unit (V2R) communication.
Perspectives
In this paper, we have investigated the influence of hidden nodes on relay communication link. By exploring the characteristics of platoon model, we observe that platoon model can improve link performance by reducing the data collision.
Xiaoting Ma
Beijing Jiaotong University
Read the Original
This page is a summary of: CSMA/CA-aware connectivity quality of downlink broadcast in vehicular relay networks, IET Microwaves Antennas & Propagation, March 2019, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-map.2018.6102.
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