Department of Ubiquitous IT, Division of Computer & Information Engineering, Dongseo University, Busan, 617-716, Korea.
Sensors (Basel). 2012;12(1):500-17. doi: 10.3390/s120100500. Epub 2012 Jan 5.
Many commercial wireless mesh network (WMN) products are available in the marketplace with their own proprietary standards, but interoperability among the different vendors is not possible. Open source communities have their own WMN implementation in accordance with the IEEE 802.11s draft standard, Linux open80211s project and FreeBSD WMN implementation. While some studies have focused on the test bed of WMNs based on the open80211s project, none are based on the FreeBSD. In this paper, we built an embedded system using the FreeBSD WMN implementation that utilizes two channels and evaluated its performance. This implementation allows the legacy system to connect to the WMN independent of the type of platform and distributes the load between the two non-overlapping channels. One channel is used for the backhaul connection and the other one is used to connect to the stations to wireless mesh network. By using the power efficient 802.11 technology, this device can also be used as a gateway for the wireless sensor network (WSN).
许多商用无线网状网络 (WMN) 产品在市场上都有其专有的标准，但不同供应商之间的互操作性是不可能的。开源社区根据 IEEE 802.11s 草案标准、Linux open80211s 项目和 FreeBSD WMN 实现，拥有自己的 WMN 实现。虽然一些研究专注于基于 open80211s 项目的 WMN 测试平台，但没有一个是基于 FreeBSD 的。在本文中，我们使用 FreeBSD WMN 实现构建了一个嵌入式系统，该系统利用两个信道，并评估了其性能。此实现允许传统系统独立于平台类型连接到 WMN，并在两个非重叠信道之间分配负载。一个信道用于回程连接，另一个信道用于连接到无线网状网络的站点。通过使用节能的 802.11 技术，该设备也可以用作无线传感器网络 (WSN) 的网关。
