Carrier sense multiple access with collision avoidance-aware connectivity quality of downlink broadcast in vehicular relay networks

Ma, Xiaoting1; Zhao, Junhui1,2; Gong, Yi3; Sun, Xiaoke1

2019-07-03

10.1049/iet-map.2018.6102

IET Microwaves Antennas & Propagation   影响因子和分区

1751-8725

1751-8733

In vehicular relay networks, the quality of communication link has a significant impact on the stable and reliable communication requirements. Most earlier studies focused on the influence of relay probability on link connectivity while little attention has been paid to the impact of packet collision. 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. This condition inspires them to study the link connectivity in vehicular relay networks based on carrier sense multiple access with collision avoidance. First, the relationships among vehicle density, vehicle speed, packet collision probability and relay probability are studied in relay communication. Second, 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 communication. Extensive numerical results indicate that the platoon model has a great advantage in terms of downlink performance, especially in the case of dense traffic flow.

relay networks (telecommunication) carrier sense multiple access probability vehicular ad hoc networks collision avoidance ad hoc networks telecommunication traffic mobile radio telecommunication congestion control access protocols wireless LAN collision avoidance-aware connectivity quality vehicular relay networks communication link stable communication requirements reliable communication requirements relay probability link connectivity vehicle density data packet collision probability relay network vehicle speed vehicle nodes relay communication networks vehicle-to-roadside unit communication

SCI ; EI

英语

其他

State Key Laboratory of Rail Traffic Control and Safety[RCS2017K009]

Engineering ; Telecommunications

Engineering, Electrical & Electronic ; Telecommunications

WOS:000474336100008

INST ENGINEERING TECHNOLOGY-IET

20192607116595

Carrier communication ; Carrier sense multiple access ; Collision avoidance ; Probability ; Relay control systems ; Transport properties ; Vehicle to roadside communications ; Vehicles

Telecommunication; Radar, Radio and Television:716 ; Control Systems:731.1 ; Accidents and Accident Prevention:914.1 ; Probability Theory:922.1 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

1.Beijing Jiaotong Univ, Sch Elect & Informat Engn, Beijing 100044, Peoples R China
2.East China Jiaotong Univ, Sch Informat Engn, Nanchang 330013, Jiangxi, Peoples R China
3.Southern Univ Sci & Technol, Sch Elect & Elect Engn, Shenzhen 518055, Peoples R China

Ma, Xiaoting,Zhao, Junhui,Gong, Yi,et al. Carrier sense multiple access with collision avoidance-aware connectivity quality of downlink broadcast in vehicular relay networks[J]. IET Microwaves Antennas & Propagation,2019,13(8):1096-1103.

Ma, Xiaoting,Zhao, Junhui,Gong, Yi,&Sun, Xiaoke.(2019).Carrier sense multiple access with collision avoidance-aware connectivity quality of downlink broadcast in vehicular relay networks.IET Microwaves Antennas & Propagation,13(8),1096-1103.

Ma, Xiaoting,et al."Carrier sense multiple access with collision avoidance-aware connectivity quality of downlink broadcast in vehicular relay networks".IET Microwaves Antennas & Propagation 13.8(2019):1096-1103.