论文标题
无线网络中信息传播的增量方法的分析研究
Analytical Study of Incremental Approach for Information Dissemination in Wireless Networks
论文作者
论文摘要
在许多情况下,控制信息传播成为一种瓶颈,它限制了无线网络的可扩展性和性能。这样的问题在移动临时网络,密集网络,车辆和无人机网络,传感器网络中尤为重要。换句话说,此问题在任何情况下都发生,一侧的拓扑或干扰水平频繁变化,对另一侧的延迟,可靠性,功耗或容量的要求很强。如果控件信息部分变化,则可能值得仅发送差异更新,而不是包含完整信息以减少开销的消息。但是,这种方法需要对传播参数进行准确调整,因为有必要保证在易用错误的无线网络中的信息相关性。在本文中,我们对两种产生差异更新的方法进行了深入的研究 - 即增量和累积 - 并比较它们的效率。我们表明,增量方法允许与累积的信息相比,大大减少生成的控制信息的量,同时提供相同的信息相关性。我们为增量方法开发了一个分析模型,并提出了一种算法,该算法可以根据网络中的节点,移动性和无线通道质量来调整其参数。使用开发的分析模型,我们表明,增量方法对于静态密度网络部署和中等介质移动性的网络非常有用,因为它使我们能够显着减少与经典的完整转储方法相比的控制信息量。
In many scenarios, control information dissemination becomes a bottleneck, which limits the scalability and the performance of wireless networks. Such a problem is especially crucial in mobile ad hoc networks, dense networks, networks of vehicles and drones, sensor networks. In other words, this problem occurs in any scenario with frequent changes in topology or interference level on one side and with strong requirements on delay, reliability, power consumption, or capacity on the other side. If the control information changes partially, it may be worth sending only differential updates instead of messages containing full information to reduce overhead. However, such an approach needs accurate tuning of dissemination parameters, since it is necessary to guarantee information relevance in error-prone wireless networks. In the paper, we provide a deep study of two approaches for generating differential updates - namely, incremental and cumulative - and compare their efficiency. We show that the incremental approach allows significantly reducing the amount of generated control information compared to the cumulative one, while providing the same level of information relevance. We develop an analytical model for the incremental approach and propose an algorithm which allows tuning its parameters, depending on the number of nodes in the network, their mobility, and wireless channel quality. Using the developed analytical model, we show that the incremental approach is very useful for static dense network deployments and networks with low and medium mobility, since it allows us to significantly reduce the amount of control information compared to the classical full dump approach.