ITR: Wireless Transit Access Points: Enabling a Scalable, Deployable, High Performance Wireless Internet

PI推动的愿景是提供高性能、可扩展和广泛部署的无线互联网，以10 Mb/秒的速率促进从全新的和不可预见的应用到真正的无线“宽带”到住宅和公共场所的各种服务。遗憾的是，今天的无线网络，如蜂窝和WiFi热点，由于在多个方面遇到的问题无法实现这一愿景：(1)有线回程网络成本过高，(2)性能可伸缩性差，(3)频谱许可费成本过高。我们将设计一种基于转接接入点(TAP)的架构，这些设备通过在非许可频段运行的高性能定向天线无线链路形成无线主干网状网。这种多跳无线网状将无线TAP与有限的有线互联网入口点和无线多跳移动用户互联。为了实现这种体系结构的目标，PIS将使用理论、算法和协议设计、仿真以及实现和测试床实验相结合的方法来解决以下基本研究问题：(1)可扩展的分布式机会调度和媒体访问协议的开发；(2)协调多跳资源管理算法的开发；(3)考虑协议开销的关键影响的系统容量分析；以及(4)首个同类邻域试验床的部署。

The PIs driving vision is to provide a high-performance, scalable and widely deployed wireless Internet that facilitates services ranging from radically new and unforeseen applications to true wireless "broadband" to residences and public spaces at rates of 10s of Mb/sec. Unfortunately, today's wireless networks such as cellular and WiFi hot-spots cannot achieve this vision due to problems encountered on multiple fronts: (1) excessive costs of the wired backhaul network, (2) poor performance scaling, and (3) excessive costs of spectral license fees. We will design an architecture that is based on Transit Access Points (TAPs), devices that form a wireless backbone mesh via high-performance directional-antenna wireless links operating in the unlicensed band.This multihop wireless mesh interconnects wireless TAPs with limited wired Internet entry points and with wireless multihopping mobile users. To achieve the objectives with this architecture, the PIs will use a combination of theory, algorithm and protocol design, simulation, and implementation and testbed experimentation to address the following fundamental research issues: (1) development of scalable distributed opportunistic scheduling and media access protocols, (2) development of coordinated multi-hop resource management algorithms, (3) analysis of system capacity that incorporates the critical effects of protocol overhead, and (4) deployment of a first-of-its-kind neighborhood testbed.