NeTS-NoSS: Cooperative Communication for Wireless Sensor Networks

NeTS-NoSS：无线传感器网络的协作通信

• 批准号: 0721296
• 负责人: Mary Ann Weitnauer
• 金额: $ 50万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing 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=0721296&HistoricalAwards=false
• 关键词: NeTS; NoSS; Cooperative; Communication; Wireless

The goal of the project is to investigate link and routing protocols formulti-hop wireless sensor networks that use a type of cooperativetransmission called opportunistic large arrays (OLAs). An OLA is a largegroup of simple, inexpensive relays or forwarding nodes that behavewithout coordination between each other, but they naturally fire togetherin response to energy received from a single source or another OLA. Eachnode has just one antenna, however because the nodes are separated inspace, they collectively provide diversity protection from multipathfading and they can reap the spectrum efficiency of amultiple-input-multiple-output (MIMO) system. It has been shown that undersufficient conditions during broadcast, OLAs form concentric rings thatcover the whole network. Even when flooding the whole network, OLAnetworks have been shown theoretically to have significant advantages overconventional multi-hop networks in terms of reduced transmit energy, lowernode complexity, better connectivity, and shorter end-to-end delay.Reduced energy consumption means sensor batteries last longer.The project will further reduce the energy consumption of OLA networks bylimiting the flood to be more like a river, many nodes wide, exploitingthe ring structure to guide a message up to the sink. Developed protocolswill exploit the trade-off between diversity and spatial multiplexingwithin OLAs to achieve connectivity while maximizing throughput. OLA linklayer protocols will enable the river to flow around obstacles such asblockages or clusters of destroyed nodes, and resolve the situation whenrivers collide.

该项目的目标是研究单跳无线传感器网络的链路和路由协议，该网络使用一种称为机会大阵列（OLA）的协作传输类型。一个奥拉是一个简单的，廉价的继电器或转发节点，没有相互协调，但他们自然地一起火灾，以响应从一个单一的来源或另一个奥拉接收的能量。每个节点只有一根天线，但由于节点在空间上是分离的，它们共同提供分集保护以抵抗多径衰落，从而获得多输入多输出（MIMO）系统的频谱效率。研究表明，在广播过程中，在充分条件下，OLA形成覆盖整个网络的同心环。即使当洪水淹没整个网络时，理论上已经证明，在降低传输能量、降低节点复杂度、更好的连通性和更短的端到端延迟方面，OLA网络也比传统的多跳网络具有显著的优势。降低的能量消耗意味着传感器电池的寿命更长。该项目将进一步降低奥拉网络的能量消耗，将洪水限制为更像河流，许多节点宽，利用环结构将消息引导到接收端。开发的协议将利用OLA内的分集和空间复用之间的权衡，以实现连接，同时最大限度地提高吞吐量。奥拉链路层协议将使河流绕过障碍物，如堵塞或集群的破坏节点，并解决情况时，河流碰撞。