异等 问题，研究了消息经由城市道路及路口网关组成的主干路网传播，根据车联网互联互通时 的四种连通性质提出了城市场景中有基础设施的车联网连通性模型。
[0122] 创新之二:提出了形成车联网互联互通时的四种连通性质。为了能够更准确的描 述车联网的连通性，仅仅定性的分析其性质是远远不够的，必须要能够定量的使用形式化 解析表达方式描述网络的连通性。通过分析推导，本发明提出了城市场景中形成车联网互 联互通时的四种连通性质，具体包括:连通的可能性、连通的非实时性、连通的消耗度W及 连通的不可靠性。
[0123] 本说明书中的参考文献：
[0124] [1]VIRIYASITAVAT W，BAI F'TONGUZ 0 !(.Dynamics Of 化twork Connectivity in Urban Vehicular Networks[J]. IEEE Journal on Selected Areas in Communications,2011,29(3):515-533.
[01 巧][2]AKHTAR N'OZKASAP O'ERGEN S C.VANET topology characteristics under realistic mobility and channel models[C]//Wireless Communications and 化tworking Conference,NY:I邸E,2013:1774-1779.
[0126] [3]HUANG Hong-Yu,LUO Pei-En,LI Minglu'et al.Performance Evaluation of SUVnet With Real-Time Traffic Data[J]. IEEE Transactions on Vehicular Technology,2007,56(6):3381-3396.
[0127] [4]NAB0ULSI D,FIORE M.On the Topology of a Large-scale Urban Vehicular Network[R].Sophia Antipolis:Inria,2012.
[01 巧][5]UPP00R S,FIORE !.Large-scale urban vehicular mobility for networking research[C]//Vehicular Networking Conference(VNC),November 14-16, 2011,Amsterdam.New York,NY:I邸E,2011:62-69.
[01 巧][6]PALLIS G'KATSAROS D'DIKAIAKOS M D，et al.On the structure and evolution of vehicular networks[C]//Int.Symp.MASCOTS,2009,London.New York,NY: I邸E,2009:1-10.
[0130] [7]常促宇，向勇，史美林.车载自组网的现状与发展，通信学报[J].2007,28(11): 116-126.
[0131] [8]册 I-H,LEUNG K K,POLAK J W.Connectivity dynamics for vehicular ad-hoc networks in signalized road systems[C]//21st International Teletraffic Congress,NY:I邸E,2009:1-8.
[0132] [9化0化LOUDES N'PALLIS G'DIKAIAKOS M D.The dynamics of vehicular networks in urban environments[R].Cyprus:University of Cyprus,2010.
[0133] [10]刘业，吴国新.基于802. llp/WAVE的车联网连通性模型及其应用研究[J].通 信学报，2013,34(6):85-91.
[0134] [11]熊巧，李清泉.高速公路场景中车用自组织网络1-连通的必要条件[J].软件 学报，2010,21(11):2906-2919.
[0135] [12]ABDRAB0U A,ZHUANG !.Probabilistic Delay Control and Road Side Unit Placement for Vehicular Ad Hoc Networks with Disrupted Connectivity!!J] .IEEE Journal on Selected Areas in Communications,2011,29(1):129-139.
[0136] [13]SALV0 P,CUOMO F,BAI0CCHI A,et al.Road Side Unit coverage extension for data dissemination in VANETs[C]//9th Annual Conference on Wireless On-demand Network Systems and Services(WONS),January 9-11,2012, Courmayeur.New York,NY:I邸E,2012:47-50.
[0137] [14]LIU Y,NIU J,MA J,et al.File downloading oriented Roadside Units deployment for vehicular networks[J].Journal of Systems Architecture,2013,59 (10):938-946.
[0138] [15]陈丽，李治军，姜守旭，等.车载Ad Hoc网络中基于移动网关的数据传输[J]. 计算机学报，2012，35(3): 454-463.
[0139] [16]MAT0LAK D W，WU Q'SANC肥Z-SANCHEZ J J，et al.Performance Of LTE in Vehicle-to-Vehicle Channels[C]//Vehicular Technology Conference(VTC Fall) .September 5-8,2011,San Francisco,CA.New York,NY:IEEE,2011:1-4.
[0140] [17]ABID H'CHUNG T-C，LEE S，et al.Performance Analysis of LTE Smartphones-Based Vehicle-to-Infrastrcuture Communication[C]//9th International Conference on Ubiquitous Intelligence Computing and 9th International Conference on Autonomic Trusted Computing(UIC/ATC), September 4-7，2012，Rikuoka. New York，NY: I邸E，2012:72-78.
[0141] [18]REMY G,SENOUCI S-MJAN F,et al. LTE4V2X: LTE for a Centralized VANET 0rganization[C].//Global Telecommunications Conference(GLOBECOM 2011) .2011:1-6.
[0142] [19化IHL M,BUR K'MAHANTA P，et al.3GPP LTE downlink scheduling str曰tegies in vehicle-t0-infr曰structure communic曰tions for tr曰ffic s曰fety 曰pplic曰tions[C]//IEEE Symposium on Computers 曰nd Communic曰tions(ISCC),July 1-4，2012，Ca卵adocia. New York，NY: I邸E，2012:448-453.
[0143] [20]IDE C,NIEH0EFER B,KNAUP T,et al.Efficient Floating Car Data Transmission via LTE for Travel Time Estimation of VehicIes[C]//Vehicular Technology Conference，September 3-6,2012，Quebec City.New York,NY:I邸E,2012:I-5.
[0144] [21]YANG Kun，OU Shumao，Chen H-H，et al.A multihop peer communication protocol with fairness guarantee for IEEE 802.16based vehicular networks[J] .IEEE Transactions on Vehicular Technology，2007，56(6):3358-3370.
[014日] [22]SHAN Lianhai，LIU Fuqiang，YANG Kun.Performance analysis of group handover scheme for IEEE 802.16j-enabled vehicular networks[G]// Proceedings of the Joint Internati