NeTS: Small: New models and techniques for efficient communication in smartphone ad-hoc networks

该项目旨在开发两种新的基于智能手机的基础设施模型，以支持需要在没有互联网支持的情况下进行近距离交互和通信的应用程序。它的动机是由一组智能手机组成的ad-hoc网络可以帮助改善当前基于位置的服务，推动新的应用程序，并增强无线基础设施。在这个项目中，一个模型利用异构无线电接口来改善批量数据传输，而另一个模型则探索了一种新的被动通信方法来传播短消息，如Twitter和Facebook消息。这两种新模型的目标是减少能源成本和网络开销，这是部署智能手机ad-hoc网络的关键。如果成功的话，这个项目将产生两个新的移动的ad-hoc网络架构和一套建立在它们之上的协议。预计它将对研究界和工业产生直接影响。本计画的成果将进一步拓宽移动的应用范围，并可能启发开发者创造基于本地数据通信的创新服务，特别是解决传统移动的ad-hoc网络中路径建立与路径恢复的高成本问题。第一个新型号将远程无线电集成到智能手机中，以执行控制和管理数据包，而有效载荷数据仍然通过WiFi和蓝牙等常规无线电传输。一个新的路由协议将开发基于这种双无线电设置，以提高效率。第二种新模式使用蓝牙和WiFi-Direct协议中的强制性“对等发现”功能，在附近的智能手机之间传播短消息。建立和维护无线链路的成本可以忽略不计，并且从多个附近设备获取消息的特性对于在附近传播消息的应用是期望的。该项目将为每个智能手机制定适当的接收和发送消息的策略，以节省能源成本并提高消息发送率。

This project aims to develop two new smartphone-based infrastructure models to support applications that require interaction and communication in the proximity without the support of the Internet. It is motivated by the fact that ad-hoc networks formed by a collection of smartphones can help improve the current location-based services, propel new applications, and enhance the wireless infrastructures. In this project, one model harnesses the heterogeneous radio interfaces to improve bulk data transfer while the other model explores a new passive communication approach for disseminating short messages such as Tweets and Facebook messages. Both new models target on reducing the energy cost and network overhead which are critical to deploying smartphone ad-hoc networks. If successful, this project will result in two new mobile ad-hoc network architectures and a suite of protocols built on them. It is expected to have immediate impact on the research community and industry. The results of this project will further broaden the mobile application scope and may inspire developers to create innovative services based on local data communication.Specifically, this project addresses the high-cost issue in path establishment and path recovery in traditional mobile ad-hoc networks. The first new model integrates a long-range radio into a smartphone to carry out control and management packets while payload data are still transferred over regular radios such as WiFi and Bluetooth. A new routing protocol will be developed based on this dual radio setting to improve the efficiency. The second new model uses the mandatory 'peer discovery' function in Bluetooth and WiFi-Direct protocols to disseminate short messages among the smartphones in the proximity. The cost for establishing and maintaining wireless links is negligible, and the feature of fetching messages from multiple nearby devices is desirable for the applications that spread messages in the proximity. This project will develop an appropriate strategy for each smartphone to receive and dispatch messages with the objective of conserving the energy cost and improving the message delivery ratio.