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| 1 | A TCP Performance Enhancement Scheme in Infrastructure based Vehicular Networks显示文摘Transmission Control Protocol(TCP) in infrastructure based vehicular networks is dedicated to support reliable Internet services for mobile users.However,an end-toend TCP flow not only experiences some common challenges in wireless mobile networks,such as high packet loss rate,medium access competition,unstable wireless bandwidth,and dynamic topology,etc.,but also suffers from performance degradation due to traffic congestion at the Road-Side Units(RSUs) that connect the wireline and wireless networks.In order to address the challenging issues related to reliable TCP transmissions in infrastructure based vehicular networks,we propose an RSU based TCP(R-TCP) scheme.For wireline source nodes,R-TCP adopts a novel flow control mechanism to adjust transmission rates according to the status of bottleneck link.Specifically,during the short wireless connection time in Infrastructure based vehicular networks,R-TCP quickly chooses an ideal transmission rate for data transmissions instead of activating the slow start algorithm after the connection is established,and successfully avoids the oscillation of the transmission rate.Simulation results show that R-TCP achieves great advantages than some relate proposals in terms of throughput,end-to-end delay,and packet loss rate. | HA Le FANG Lijin BI Yuanguo LIU Wei | 2015 | China Communications2015，12，6： | 5 |
| 2 | Explicit Rate Based Transmission Control Scheme in Vehicle-to-lnfrastructure Communication Networks显示文摘In Vehicle-to-infrastructure(V2I)communication networks,mobile users are able to access Internet services,such as video streaming,digital map downloading,database access,online gaming,and even safety services like accident alarm,traffic condition broadcast,etc.,through fixed roadside units.However,the dynamics of communication environment and frequent changing topology critically challenge the design of an efficient transport layer protocol,which makes it difficult to guarantee diverse Quality of Service(QoS) requirements for various applications.In this paper,we present a novel transport layer scheme in infrastructure based vehicular networks,and aim to resolve some challenging issues such as source transfer rate adjustment,congestion avoidance,and fairness.By precisely detecting packet losses and identifying various causes of these losses(for example,link disconnection,channel error,packet collision,buffer overflow),the proposed scheme adopts different reacting mechanisms to deal with each of the losses.Moreover,it timely monitors the buffer size of the bottleneck Road-Side Unit(RSU),and dynamically makes transfer rate feedbacks to source nodes to avoid buffer overflow or vacancy.Finally,analysis and simulation results show that the proposed scheme not only successfully reduces packet losses because of buffer overflow and link disconnection but also improves the utilization efficiency of channel resource. | BI Yuanguo Xuemin (Sherman) SHEN ZHAO Hai | 2014 | China Communications2014，11，1： | 2 |
| 3 | Efficient and reliable broadcast in intervehicle communication networks: A cross-layer approach 显示文摘 | Bi Yuanguo Cai Lin X Shen Xuemin | 2010 | IEEE Trans bn Vehicular Technology2010，59，5： | 1 |
| 4 | A multi-channel token ring protocol for QoS previsioning in inter-vehicle Communications, 显示文摘 | BI YUANGUO LIU KUANGHAO CM L X | 2009 | IEEE Transactions on Wireless2009，8，11： | 1 |
| 5 | Me-dium Access Contral for QoS Provisioning in Vehicle-to-lnfrastructure Communication Net- works显示文摘 | BI Yuanguo CAI Lin SHEN Xuemin et el | 2013 | ACM Mobile Networks and App- lications2013，18，2： | 1 |
| 6 | Scheduling algorithms for time-constrained big-le transfers in the Internet of Vehicles显示文摘In order to transfer large les and provide high-quality services in the IoV(Internet of Vehicles),intelligent routing and scheduling are indispensable for fast transfers and effcient network utilization,particularly when multi-path routing is allowed in the wired-transfer.Thus,a network administrator must select a set of feasible paths over which the transfer can be conducted.We consider a TBTS(Time-constrained Big-le Transfer Scheduling)problem in this paper.We prove that TBTS problem is NP-hard and that the TBTS problem can be solved by addressing a corresponding maximum ow over time problem with multi-path routing technique.We then propose both a heuristic algorithm(TBTS-H)and an exact algorithm(TBTS-A)to solve the TBTS problem.Although both of the proposed approaches can solve the TBTS problem,the heuristic runs more effciently by trading accuracy for delay,while the exact algorithm can achieve high accuracy for delay,at the cost of increased running-time.The corresponding simulation results illustrate this trade-o.Additionally,we conduct some comparisons between our proposed approaches and a traditional single-path routing scheme. | Chuan Lin Yuanguo Bi Hai Zhao Zeshen Wang Jinfa Wang | 2017 | Journal of Communications and Information Networks2017，2，2： | 1 |
| 7 | A Multi-Channel Token Ring Protocol for QoS Provisioning in Inter-Vehicle Communications显示文摘 | BI Yuanguo LIU Kuanghao SHEN Xuemin | 2009 | IEEE Transactions on VCireless Communications2009，8，11： | 1 |
| 8 | Medium Access Control for QoS Provisioning in Vehicle-to-Infrastructure Communication Networks显示文摘 | BI Yuanguo CAI Lin SHEN Xuemin ZHAO Hai | 2013 | ACM Mobile Networks and Appli- cations2013，18，2： | 1 |
| 9 | A Multi-channel token ring protocol for QoS provisioning in inter-vehicle communications 显示文摘 | BI Yuanguo LIU Kuanghao SHEN Xuemin et al | 2009 | IEEE Transactions on Wireless Communications2009，8，11： | 1 |
| 10 | Histones of Neutrophil Extracellular Traps Induce CD11b Expression in Brain Pericytes Via Dectin-1 after Traumatic Brain Injury显示文摘The brain pericyte is a unique and indispensable part of the blood-brain barrier(BBB),and contributes to several pathological processes in traumatic brain injury(TBI).However,the cellular and molecular mechanisms by which pericytes are regulated in the damaged brain are largely unknown.Here,we show that the formation of neutrophil extracellular traps(NETs)induces the appearance of CD11b^(+)pericytes after TBI.These CD11b^(+)pericyte subsets are characterized by increased permeability and pro-inflammatory profiles compared to CD11b-pericytes.Moreover,histones from NETs by Dectin-1 facilitate CD11b induction in brain pericytes in PKC-c-Jun dependent manner,resulting in neuroinflammation and BBB dysfunction after TBI.These data indicate that neutrophil-NET-pericyte and histone-Dectin-1-CD11b are possible mechanisms for the activation and dysfunction of pericytes.Targeting NETs formation and Dectin-1 are promising means of treating TBI. | Yang-Wuyue Liu Jingyu Zhang Wanda Bi Mi Zhou Jiabo Li Tiantian Xiong Nan Yang Li Zhao Xing Chen Yuanguo Zhou Wenhui He Teng Yang Hao Wang Lunshan Xu Shuang-Shuang Dai | 2022 | Neuroscience Bulletin2022，38，10： | 0 |
| 11 | End-to-End Rate Adaptation to Support Heterogeneous Services for Infrastructure-Based Vehicular Networks显示文摘Vehicle to Infrastructure(V2I) communications aim to provide mobile users on the road low-cost Internet and driver safety services.However, to meet Quality of Service(QoS) requirements of various applications and efficiently utilize limited wireless channel resourc-es, the transport layer protocol has to perform effective rate control in low channel quality and frequent changing topology communica-tion environment. In this paper, we propose a novel rate-control scheme in infrastructure based vehicular networks that avoids conges-tion and starvation and promotes fairness in end-to-end V2I communications. In vehicular networks, a bottleneck roadside unit(RSU)keeps track of its buffer size, aggregate incoming rate, and link throughput, and appropriately allocates bandwidth to traversing flows.With feedback information from the RSU, source nodes dynamically adjust their sending rates to avoid buffer overflow or starvation atthe bottleneck RSU. Simulation results show that the proposed scheme can reduce not only packet losses owing to buffer overflow butalso buffer starvation time, which improves the utilization efficiency of wireless channel resource. | Yuanguo Bi Hangguan Shan Xuemin (Sherman) Shen Hai Zhao | 2014 | ZTE Communications2014，12，1： | 0 |
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