本文選題：安全消息 + 車頭時(shí)距�。� 參考：《西南師范大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年02期

【摘要】：車聯(lián)網(wǎng)VANETs(Vehicular ad hoc network)被認(rèn)為是下一代汽車系統(tǒng)的重要部分.VANETs的多數(shù)安全應(yīng)用依賴于周期的基礎(chǔ)安全消息BSM(Basic Safety Message)的可靠傳輸.然而,由于車輛密度、速度的不斷變化,固定傳輸參數(shù)如BSM傳輸范圍以及產(chǎn)生率會(huì)引起數(shù)據(jù)包碰撞,降低控制信道利用率,為此,傳輸參數(shù)應(yīng)自適應(yīng)VANETs安全應(yīng)用的變化,而不是固定傳輸參數(shù).考慮到車輛安全以及最大化控制信道利用率,提出了自適應(yīng)設(shè)定傳輸范圍以及數(shù)據(jù)包產(chǎn)生率ASRR(Adaptive-Set Range-Rate)算法.首先,先測(cè)量車頭時(shí)距作為車輛安全的性能指標(biāo),并依據(jù)車頭時(shí)距產(chǎn)生BSM產(chǎn)生率,然后再利用BSM產(chǎn)生率、車輛密度以及網(wǎng)絡(luò)負(fù)載3個(gè)參數(shù)計(jì)算傳輸范圍,使得BSM產(chǎn)生率、傳輸范圍隨車輛密度自適應(yīng)地變化.仿真結(jié)果表明,在變化的車輛密度、車輛速度場(chǎng)景,提出的ASRR算法可以提高安全消息的傳輸成功率以及控制信道利用率.
[Abstract]:Vehicular ad hoc network) is considered to be an important part of the next generation automobile system. Most safety applications of VANETs depend on the reliable transmission of periodic basic safety message. However, due to the continuous change of vehicle density and speed, fixed transmission parameters such as BSM transmission range and rate of generation will cause packet collisions and reduce the utilization of control channels. Therefore, the transmission parameters should be adaptive to the changes of VANETs security application. Rather than a fixed transmission parameter. Considering vehicle security and maximization of control channel utilization, an adaptive algorithm for setting the transmission range and packet generation rate (ASRRX Adaptive-Set Range-Ratee) is proposed. First of all, the head-time distance is measured as the performance index of vehicle safety, and the BSM generation rate is generated according to the head-time distance, and then the BSM generation rate, vehicle density and network load are used to calculate the transmission range to make the BSM generation rate. The transmission range changes adaptively with vehicle density. The simulation results show that the proposed ASRR algorithm can improve the transmission success rate and control channel utilization rate of security messages in the varying vehicle density and vehicle speed scenes.
【作者單位】： 重慶電子工程職業(yè)學(xué)院;重慶大學(xué)生物工程學(xué)院;
【基金】：國(guó)家科技支撐計(jì)劃資助項(xiàng)目(2012BAI19B03) 教育部高校博士點(diǎn)基金資助項(xiàng)目(20090191110030) 中央高校基本科研業(yè)務(wù)費(fèi)資助項(xiàng)目(CDJXS10231179,CDJSX102300)
【分類號(hào)】：TN929.5;U495

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 陳立家;高偉;;一種VANET信道丟包率模型[J];計(jì)算機(jī)工程與應(yīng)用;2011年25期

【共引文獻(xiàn)】

相關(guān)期刊論文 前1條

1 龔恒;林濤;侯長(zhǎng)軍;肖雪;;VANET安全應(yīng)用中安全消息傳輸參數(shù)的自適應(yīng)控制[J];西南師范大學(xué)學(xué)報(bào)(自然科學(xué)版);2017年02期

【二級(jí)參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 扈羅全;朱洪波;;隨機(jī)射線的概率分布及其應(yīng)用[J];電子與信息學(xué)報(bào);2009年06期

【相似文獻(xiàn)】

相關(guān)期刊論文 前3條

1 鄭澤治;單線—大地回路傳輸參數(shù)的測(cè)試[J];核電子學(xué)與探測(cè)技術(shù);1991年02期

2 王曙劍;對(duì)雙口網(wǎng)絡(luò)傳輸參數(shù)的討論[J];電工教學(xué);1996年01期

3 ;[J];;年期

，

本文編號(hào)：2018914