Class of Service Support Layer for Wireless Mesh Networks

• 作者: Jukka SUHONEN Marko HANNIKAINEN Timo D. HAMALAINEN
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: WIRELESS LAN WIRELESS SENSOR Network SCHEDULING TRAFFIC Control (Communication) Quality of Service
• 年，卷（期）: 2010,（2）
• 页码范围: 140-151
• 页数: 12页
• 分类号: TN92

摘要

This paper presents an add-on Class of Service (CoS) layer for wireless mesh networks. The proposed protocol is applicable for contention-based MACs and is therefore compatible with most of the Wireless Local Area Network (WLAN) and Wireless Sensor Network (WSN) protocols. The protocol has a locally centralized control for managing data flows, which either reserve a fixed bandwidth or are weighted by fair scheduling. The protocol reduces transmission collisions, thus improving the overall throughput. IEEE 802.11 adhoc WLAN has been taken as a platform for simulations and prototyping for evaluating the protocol performance. Network Simulator Version 2 (NS2) simulations show that the CoS protocol efficiently differentiates bandwidth, supports bandwidth reservations, and reaches less than 10 ms transfer delay on IEEE 802.11b WLAN. Testing with a full prototype implementation verified the performance of the protocol.