NeTS: Small: Random Access Heterogeneous MIMO Networks

NeTS：小型：随机接入异构 MIMO 网络

• 批准号: 1117194
• 负责人: Dina Katabi
• 金额: $ 30万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1117194&HistoricalAwards=false
• 关键词: NeTS; Small; Random; Access; Heterogeneous

Existing 802.11n is inefficient whenever nodes with a different number of antennas share the medium. This research aims to develop an advanced 802.11n design that delivers as many concurrent transmissions as permitted by the MIMO transmitter with the maximum number of antennas. Such a design delivers performance gain while maintaining the fully distributed random access nature of today's 802.11n, i.e., its ability to support bursty traffic, distributed decisions, and ad hoc deployment. The research develops a novel carrier sense mechanism that enables MIMO nodes to detect whether they can transmit in the presence of an ongoing transmission without interfering with it. It then builds on this mechanism to deliver a random access protocol where MIMO nodes contend for both time and degrees of freedom, without any form of centralized coordination. Finally, it implements its design and evaluates it in a wireless testbed. By delivering a higher throughput for the same resource, this research advances the design of MIMO 802.11 networks and the corresponding industry.

现有的802.11n在具有不同数量的天线的节点共享介质时是低效的。 本研究旨在开发一种先进的802.11n设计，该设计可在MIMO发射机允许的最大天线数下提供尽可能多的并发传输。这样的设计提供了性能增益，同时保持了当今802.11n的完全分布式随机接入特性，即，它能够支持突发流量、分布式决策和临时部署。该研究开发了一种新的载波侦听机制，使MIMO节点能够检测它们是否可以在不干扰正在进行的传输的情况下进行传输，然后在此机制的基础上提供一个随机接入协议，其中MIMO节点竞争时间和自由度，而无需任何形式的集中协调。最后，它实现了它的设计，并在一个无线测试平台进行了评估。通过在相同的资源下提供更高的吞吐量，本研究推进了MIMO 802.11网络的设计和相应的行业。