Collaborative Research: Wireless Packet Radio Network Architecture

本研究涉及一种新的自适应和可扩展的无线网络架构，利用蜂窝和分组无线网络拓扑的混合用于宽带多媒体通信。该架构能够快速适应业务、信道和干扰条件，并将显著降低发射功率，提高潜在吞吐量。我们研究了一些技术，这些技术通过物理层、数据链路层和网络层之间的协调，相对于当前最先进的技术，能够显著提高服务的容量和质量。我们研究的主要内容包括选择性地使用多用户检测；自组织;和自适应路由。我们考虑利用数据链路层可用信息的多用户检测技术。具体来说，我们正在研究错误检测侧信息在辅助干扰消除和抑制方面的好处。自组织的研究涉及网络连通性优化和资源分配。这种优化使网络在相对较长的时间尺度上适应拓扑变化。网络对物理层和应用层属性的适应主要是通过自适应路由实现的。调查人员正在评估集中式和分布式路由方法的适用性，或者可能是混合路由方法。期望它能迅速适应交通和信道情况的变化，包括干扰，以及服务质量要求的变化。

This research involves a novel adaptive and scalable wireless network architecture utilizing a mixture of cellular and packet radio network topologies for broadband multimedia communications. The architecture enables rapid adaptability to traffic, channel and interference conditions and will result in significant reductions in transmit power and potential throughput improvements. We investigate techniques that, by coordination among physical, data link, and network layers enable significant improvements in capacity and quality of service relative to the current state-of-the-art. The main thrust of our research consists of selective use of multiuser detection; self-organization; and adaptive routing. We consider multiuser detection techniques that exploit information available at the data link layer. Specifically, we are investigating the benefits of error detection side information in aiding interference cancellation and suppression. Research in self-organizing involves network connectivity optimization and allocation of resources. This optimization adapts network to topological changes on a relatively longer time scale. Network adaptation to physical and application layer attributes is primarily accomplished via adaptive routing. The investigators are evaluating the suitability of centralized and distributed, or perhaps hybrid, routing approaches. It is desired to provide rapid adaptation to changes in traffic and channel conditions, including interference, as well as changes in quality of service requirements.