电信科学 ›› 2015, Vol. 31 ›› Issue (9): 66-72.doi: 10.11959/j.issn.1000-0801.2015235

• 专题:异构网络 • 上一篇    下一篇

VANET/LTE-Advanced异构网络中基于协议序列-IEEE 802.11p的信道接入机制

徐哲鑫,蔡苓玲,林潇,吴怡   

  1. 福建师范大学光电与信息工程学院 福州350007
  • 出版日期:2015-09-15 发布日期:2015-10-19
  • 基金资助:
    国家自然科学基金资助项目;教育部高等学校博士学科点专项科研基金(新教师类)资助项目;福建省自然科学基金资助项目;福建省科技厅工业科技计划重点项目

Protocol Sequence-IEEE 802.11p Based Channel Access Mechanism in VANET/LTE-Advanced Heterogeneous Network

Zhexin Xu,Lingling Cai,Xiao Lin,Yi Wu   

  1. College of Photonic and Electronic Engineering, Fujian Normal University, Fuzhou 350007, China
  • Online:2015-09-15 Published:2015-10-19
  • Supported by:
    The National Natural Science Foundation of China;The Research Fund for the Doctoral Program of Higher Education of China;The Natural Science Foundation of Fujian Province;The Key Projects of Science and Technology Plan for Industry of the Science and Technology Department of Fujian Province

摘要:

摘要:提出了VANET/LTE-Advanced异构网络架构,并重新规划信道使用及接入模式,提高车载设备之间通信的有效性,增强公平性并兼顾自由度。以车辆间通信为研究对象,深入剖析并比较IEEE 802.11p MAC协议,基于协议序列信道接入机制,提出基于协议序列-IEEE 802.11p的信道接入算法,将“基于调度”与“基于竞争”的信道接入结合,完善IEEE 802.11p MAC层协议。仿真结果表明,基于协议序列-IEEE 802.11p的信道接入机制与UI模式及IEEE 802.11p模式相比,实现了用户平均吞吐量和平均数据分组发送时延性能的权衡,具有理论价值和实用价值。

关键词: VANET, LTE-Advanced, 异构网络, 协议序列, 信道接入

Abstract:

Abstract: VANET/LTE-Advanced heterogeneous network was proposed by combining LTE-Advanced with VANET. The utilization of channel and channel access mode was reconfigured in order to improve the system performance. Aiming at the V2V communication, the performance of channel access mechanism based on IEEE 802.11p and protocol sequence were analyzed and compared with each other. And then, protocol sequence-IEEE 802.11p based channel access mechanism was proposed, which combines the scheduling-based and competition-based mechanism to completing the standard of IEEE 802.11p. Through simulation with MATLAB, it shows that protocol sequence-IEEE 802.11p based channel access mechanism can tradeoff the performance between UI-based and IEEE 802.11p-based ones in user average throughput and average packet delay, which has important theory meaning and practical value.

Key words: VANET, LTE-Advanced, heterogeneous network, protocol sequence, channel access

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