Collaborative communication protocols for wireless networks

在许多信息处理应用中，无线网络使用分组的多跳转发来实现对数据的无处不在的访问。由于可用的能量和频谱资源有限，并且为了向这些网络的不断增加的用户数量提供支持，正在追求更复杂的传输和网络技术。然而，后者往往被设计为单独的实体。此外，无线网络设计的分层方法在具有时变信道的无线电系统中工作得不好。在无线网络社区中，有越来越多的证据表明，严格的性能要求，无线网络只能通过跨层设计，使用合作算法来满足。 为了实现无线网络的能量和带宽效率的性能，该建议旨在设计无线网络（WN）的架构和协议，实现合作的通信策略，以允许WN节点在资源分配中进行合作。 我们的重点是网络级的节能机会，重点是多跳传输，拓扑控制和路由级的问题。具体而言，该建议考虑能源效率的信息传播在WN部署合作节点，通过调整其传输范围，最大限度地减少在网络中的总发射功率。所提出的协议将利用拓扑多样性创建自适应的传输功率和利用网络编码的好处。 该研究将影响新的无线电网络架构的发展方向，并将适用于从无线传感器网络（WSNs）到蜂窝系统的任何无线电系统。所提出的框架构成了一个有效的机制，集成了协作通信和网络编码与功率控制的功率效率WN操作。该研究计划提供了在实验室环境中培养高素质研究人员的机会，这些研究人员具有强大的工业联系，通过在WSN平台上实施协议，学生将获得宝贵的实践经验。

In many information processing applications, wireless networks enable ubiquitous access to data using multi-hop forwarding of packets. Because of limited energy and spectrum resources available and to provide support for the ever increasing number of users of these networks, more sophisticated transmissions and network technologies are being pursued. However, the latter often are designed as separate entities. Also, the layered approach to wireless network design has not worked well in radio systems with time-varying channels. In the wireless network community, there is more and more evidence that stringent performance requirements for wireless networks can only be met through a cross-layer design using cooperative algorithms. To achieve energy and bandwidth efficient performance of wireless networks, this proposal seeks to design wireless network (WN) architectures and protocols that implement cooperative communication strategies to allow the WN nodes to collaborate in the assignment of resources. Our focus is on network level opportunities for energy conservation, with emphasis on the multi-hop transmissions, topology control and routing-level issues. Specifically, the proposal considers energy efficient information dissemination in WNs deploying co-operating nodes which, by adjusting their transmission ranges, minimize the total transmitted power in the network. The proposed protocols will take advantage of topological diversity created by adapting the transmission power and exploit the benefits of network coding. The research will impact the direction of the development of new radio network architectures and will be applicable to any radio system from wireless sensor networks (WSNs) to cellular systems. The proposed framework constitutes an effective mechanism that integrates cooperative communications and network coding with a power control for power efficient WN operation. The research program provides opportunities to train highly qualified research personnel in a laboratory setting with strong industrial links where, through implementation of the protocols on a WSN platform, students will gain valuable hands on experience.