NeTS-WN: Collaborative Research: Toward High-Performance Mesh Networks

NeTS-WN：协作研究：迈向高性能网状网络

• 批准号: 0721361
• 负责人: Chien-Chung Shen
• 金额: $ 22万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0721361&HistoricalAwards=false
• 关键词: NeTS; WN; Collaborative; Research; Toward

This project studies three fundamental problems to improve the performance of wireless mesh networks. (1) Managing delay and jitter. One fundamental problem affecting the performance of current mesh networks is the hop-by-hop relaying of data, resulting in significant per-hop and per-packet delay and/or jitter. This project designs a new MAC paradigm and a distributed method of scheduling data transmissions in a path-aware manner, to eliminate per-packet delay and jitter while minimizing per-hop delays. (2) Capacity analysis and utility optimization. As an augmentation to the large amount of simulation studies on multi-channelmulti-radio mesh networks, this project develops a general theoretical model to analyze both unicast and broadcast capacities of mesh networks, and applies the model to optimally assign channels to maximize capacity, as well as optimizing application-specific utility functions relevant to user-perceived network performance. (3) Channel assignment for dynamic spectrum access mesh networks. Recent advancement in cognitive radio technology and regulatory reform in spectrum policy offer dynamic spectrum access (DSA) capability to mesh networks via providing dynamically available channels. This project adopts a cross-layer and path-centric approach for assigning dynamic channels inDSA mesh networks to achieve high spectrum utilization and traffic throughput. Through developing innovative protocols, analysis and optimization models, this project promotes development of high-performance multi-radio, multi-channel, and DSA-capable mesh networks. The research on DSA mesh networks potentially facilitates the communication among different emergency management divisions in disaster rescues operations. This project also benefits the underrepresented minority students through education and research.

该项目研究三个基本问题以提高无线网状网络的性能。 (1) 管理延迟和抖动。影响当前网状网络性能的一个基本问题是数据的逐跳中继，导致显着的每跳和每数据包延迟和/或抖动。该项目设计了一种新的 MAC 范式和一种以路径感知方式调度数据传输的分布式方法，以消除每包延迟和抖动，同时最大限度地减少每跳延迟。 (2)容量分析和效用优化。作为对多通道多无线电网状网络的大量仿真研究的补充，该项目开发了一个通用理论模型来分析网状网络的单播和广播容量，并应用该模型来优化分配通道以最大化容量，如下所示以及优化与用户感知的网络性能相关的特定于应用程序的实用功能。 (3)动态频谱接入网状网络的信道分配。认知无线电技术的最新进展和频谱政策的监管改革通过提供动态可用信道为网状网络提供了动态频谱接入 (DSA) 功能。该项目采用跨层和以路径为中心的方法在DSA网状网络中分配动态信道，以实现高频谱利用率和流量吞吐量。 通过开发创新协议、分析和优化模型，该项目促进高性能多无线电、多通道和支持 DSA 的网状网络的发展。 DSA 网状网络的研究有可能促进灾难救援行动中不同应急管理部门之间的通信。该项目还通过教育和研究使代表性不足的少数族裔学生受益。