GOALI: Intelligent Channel Management in 802.11n Networks

新批准的IEEE 802.11n标准在寻求获得类似有线的传输速度方面带来了许多新的可能性。子信道的数量、信道绑定的选项以及多天线和MIMO技术的使用导致了各种各样的潜在传输策略。由于变量的数量较多，在给定负荷、干扰模式和环境噪声的情况下，选择“正确的组合”是一项复杂的工作。由于不必要的信道竞争，天真的信道分配策略将导致次优性能。这项工作解决了许多悬而未决的问题，旨在为802.11n开发一种最大化空间重用的信道分配策略。特别是，这项工作试图回答以下问题：(I)如何最好地将MIMO传输方案、信道绑定和DFS考虑因素集成到信道管理解决方案中，以最大限度地提高性能？(Ii)如何最好地利用MIMO系统获得的收益来影响信道管理系统？以及(Iii)应该如何获得并重新定义影响802.11n系统这些决策的度量？该项目将通过加州大学圣巴巴拉分校和惠普实验室之间的伙伴关系得到促进。这项工作的成果将包括一套用于动态监测当前信道状态的解决方案，以及利用监测输出在802.11n系统中实现高速、长距离通信的综合信道管理解决方案。

The newly ratified IEEE 802.11n standard brings a number of new possibilities in the quest for attaining wire-like transmission speeds. The number of subchannels, the option for channel bonding, and the use of multiple antennas and MIMO technologies result in a vast variety of potential transmission strategies. Because of the number of variables, selecting the 'right combination' given the offered load, interference patterns and environmental noise is a complex undertaking. A naïve channel assignment strategy will result in sub-optimal performance due to unnecessary channel contention. This work addresses a number of open questions in the quest to develop a channel assignment strategy for 802.11n that maximizes spatial reuse. In particular, the work seeks to answer to the following questions: (i) how should MIMO transmission schemes, channel bonding, and DFS considerations best be integrated into a channel management solution to maximize performance?; (ii) how can the gains achieved by MIMO systems best be utilized to influence the channel management system?; and (iii) how should metrics that influence these decisions be obtained and redefined for 802.11n systems? The project will be facilitated through a partnership between UC Santa Barbara and HP Laboratories. Outcomes of the work will include a set of solutions for dynamically monitoring current channel state, and an integrated channel management solution that utilizes monitoring output to achieve high-speed, long transmission range communication in 802.11n systems.