A Hybrid Channel Access Mechanism Based on Protocol Sequences and TDMA for VANET

作者：Xu Zhe-Xin; Cai Ling-Ling; Zheng Li-Li; Wu Yi^*

来源：Acta Electronica Sinica, 2017, 45(6): 1408-1414.

DOI：10.3969/j.issn.0372-2112.2017.06.019

• Communication range
• Distributed channels
• Distributed networks
• Feed back information
• Global Navigation Satellite Systems
• Hybrid channels
• Throughput performance
• Time division multiple accesses (TDMA)

In order to improve the average throughput performance of user effective data under highway scenario, a distributed channel access mechanism is proposed. The protocol sequence set is reused by road division. According to the characteristic of UI(User Irrepressibility) sequences, a few bits of feedback information are introduced for detecting the channel access order among nodes. Distributed TDMA(Time Division Multiple Access) is proposed for maximizing the throughput performance with a competition zone. The simulation results show that the throughput performance of UI-TDMA mechanism is more superior to classical method in a sparser distributed network or a higher PHY data rate or a larger communication range of node.

• 出版日期2017