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首页> 外文期刊>Eurasip Journal on Wireless Communications and Networking >New combined WiMAX/DSRC infrastructure design for efficient vehicular networking
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New combined WiMAX/DSRC infrastructure design for efficient vehicular networking

机译：新的WiMAX / DSRC组合基础架构设计可实现高效的车载网络

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In this article, a new infrastructure of a combined Worldwide Interoperability for Microwave Access ( WiMAX ) and Dedicated Short-Range Communications (DSRC) link layer is proposed with the purpose of reducing simultaneous WiMAX connections. WiMAX offers wide area connectivity of vehicles to ground-based base stations, while DSRC offers relatively shorter communication that allows for vehicles in proximity of each other to communicate directly. The proposed design uses the fact that WiMAX amendments support the concept of a WiMAX relay node, and substitutes the WiMAX relay nodes with nodes that are capable of both WiMAX and DSRC communications. This change allows for the number of WiMAX connections to be concentrated while supporting more subscribing users via WiMAX tunnelled over DSRC relay. The focus of this design is on the use case of providing broadband Internet access to a large number of DSRC capable vehicles in a WiMAX served region. The design uses DSRC as a WiMAX tunnel, but with changes to the WiMAX protocol, specifically network entry and handover processes are redesigned to have different behaviour only when operating over DSRC. Network entry over DSRC modifications are described and illustrated with comparison to existing WiMAX standards. Handover process facilitated over both WiMAX and DSRC layers are described, illustrated and are also standard compliant. Unified modeling language is used to assist with the explanations of the components to improve understanding of the design in relation to existing WiMAX standards. In addition to standard WiMAX operability, the design can also support WiMAX data subscription using a software-defined WiMAX radio via DSRC relay connectivity. This proposed design improves WiMAX communication by reducing the number of WiMAX connections between vehicles. We plotted the throughput of various cluster sizes of WiMAX only mobile relay, versus our proposed DSRC-enabled WiMAX mobile relay in order to show the efficiency benefit of our design. We also provide a simulated curve of percentage improvement efficiency for varying amount of active users. We show that as the total number of users in the system increases, our proposed system significantly improves the overall system efficiency, especially in heavily congested traffic.
机译：在本文中，为了减少同时的WiMAX连接，提出了一种结合了微波访问全球互操作性（WiMAX）和专用短距离通信（DSRC）链路层的新基础结构。 WiMAX提供了车辆与地面基站的广域连接，而DSRC提供了相对较短的通信，使彼此附近的车辆可以直接通信。提出的设计利用了WiMAX修订版支持WiMAX中继节点的概念，并用能够进行WiMAX和DSRC通信的节点替代WiMAX中继节点。这项更改使WiMAX连接的数量得以集中，同时通过通过DSRC中继建立隧道的WiMAX支持更多的订阅用户。该设计的重点是在WiMAX服务区域内为大量支持DSRC的车辆提供宽带Internet访问的用例。该设计使用DSRC作为WiMAX隧道，但是随着WiMAX协议的更改，特别是重新设计了网络进入和切换过程，使其仅在通过DSRC运行时才具有不同的行为。通过与现有WiMAX标准的比较来描述和说明通过DSRC修改的网络进入。描述，说明了WiMAX和DSRC层上促进的切换过程，并且这些过程也符合标准。使用统一的建模语言来帮助解释组件，以提高对与现有WiMAX标准相关的设计的理解。除了标准的WiMAX可操作性之外，该设计还可以通过DSRC中继连接使用软件定义的WiMAX无线电支持WiMAX数据订阅。该提议的设计通过减少车辆之间的WiMAX连接数来改善WiMAX通信。为了显示我们设计的效率优势，我们对仅采用WiMAX的移动中继的各种集群大小的吞吐量与我们提出的支持DSRC的WiMAX移动中继进行了比较。我们还提供了针对不同数量的活跃​​用户的百分比改善效率的模拟曲线。我们表明，随着系统中用户总数的增加，我们提出的系统显着提高了整体系统效率，尤其是在严重拥塞的流量中。

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