Time-Space Multicast in Wireless Ad Hoc Networks

该方案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合，并且接收方集合随着组播内容的变化而动态变化。由于节点的移动性，在最小化消息开销和减少电池消耗的同时将组播传送到预期的接收者是一个更困难的挑战。多播的内容被指定为关于灾难现场或战场中的演变情况的时间和距离信息。在这里，需要将信息多播给接收者，以使他们能够构建其邻居的威胁和资源的完整图景。然而，由于一些接收器可能以高速移动，而另一些接收器移动得更慢，因此“邻居”的定义变化很大，从而使多播的实施复杂化。提案中包含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，从而对特别网络中信息的有效分发产生重大影响。最后，给出了该组播模型在Internet上的一个应用。

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.