Time-Space Multicast in Wireless Ad Hoc Networks

提出了一种全新的自组织无线网络组播模型。在该模型中，组播数据的内容决定了数据的接收方集，接收方集随着组播内容的变化而动态变化。由于节点的移动性，将多播发送到预期的接收者，同时最小化消息开销和减少电池消耗是一项更加困难的挑战。多播的内容被指定为灾难现场或战场上有关事态演变的时间和距离信息。在这里，信息需要多播给接收者，使他们能够构建一个完整的威胁和资源的图像在他们的邻居。然而，由于一些接收器可能移动得很快，而另一些接收器移动得较慢，因此“邻居”的定义变化很大，从而使多播的行为复杂化。提案中所载的想法通过确保只有真正需要信息的接收者才能收到信息，对在特设网络中有效分发信息产生了重大影响。最后，给出了组播模型在internet上的应用。

This proposal presents a radically new multicast model for ad hoc wireless networks. In this model, the content of the multicast data determines the receiver set for the data and the receiver set changes dynamically as the content of the multicast changes. Delivering the multicast to intended receivers while minimizing the message overhead and reducing battery consumption is a challenge made harder because of node mobility. The content of the multicast is specified as time and distance information about the evolving situation in a disaster site or in a battlefield. Here, information needs to be multicast to receivers to enable them to construct a completed picture of threats and resources in their neighborhood. However, because some receivers may be moving at high speed while others move more slowly, the definition of the "neighborhood" varies dramatically thus complicating the conduct of the multicast. The ideas contained in the proposal have a significant impact on the efficient distribution of information in ad hoc networks by ensuring that only receivers that really need information receive it. Finally, an application on the multicast model to the internet is also presented.