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混合无线网络是一种解决有中心无线网络局限性并可以为AdHoc网络提供因特网连接,从而解决AdHoc网络与其他异构网络互通难题的可行网络。文中提出了一种面向数据流的选路算法,即根据不同形式的数据流采用不同的选路方式,并将AdHoc网络划分为若干个K跳网络。仿真结果显示,若数据流大部分是基于Web的,那么利用网关作为默认的路由器可以降低反应时间、减少路由表选项及开销;若大部分数据流局限于AdHoc网络,则采用按需选路机制可获得低开销以及高吞吐量等多方面的优势。另外无论采用何种选路机制,K跳网络在反应时间、数据报投递正确率以及系统消耗能量等方面都优于无限跳网络。
Hybrid wireless network is a viable network that solves the problem of central wireless network and can provide Internet connection for AdHoc network so as to solve the problem of interworking between AdHoc network and other heterogeneous networks. In this paper, a data-oriented routing algorithm is proposed, that is, different routing modes are adopted according to different types of data streams and the Ad Hoc network is divided into several K-hop networks. The simulation results show that if the data flow is mostly Web-based, using the gateway as the default router can reduce the response time and reduce the routing table options and overhead; if the majority of data flow is limited to AdHoc network, the on-demand routing mechanism Get low overhead and high throughput, and many other advantages. In addition, no matter which routing mechanism is adopted, K-hop network is superior to infinite hop network in terms of reaction time, datagram delivery accuracy and system energy consumption.