Wireless Node Architecture and Its Implementation for Multi-Hop Mesh Networks in IP-Based Broadband Fixed Wireless Access Systems

Yoji KISHI  Keita TABATA  Takeshi KITAHARA  Yujin NOISHIKI  Akira IDOUE  Shinichi NOMOTO  

IEICE TRANSACTIONS on Communications   Vol.E88-B   No.3   pp.1202-1210
Publication Date: 2005/03/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.3.1202
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Terrestrial Radio Communications
BFWA,  multi-hop mesh networks,  adaptive network control,  adaptive link control,  traffic engineering,  

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Broadband fixed wireless access (BFWA) systems with multi-hop mesh topologies have attracted considerable attention as a promising technology for next generation, high quality, high capacity, and high density access infrastructures. The primary advantages of mesh network topologies are an improvement of availability in connectivity between pairs of nodes by means of diversity routes. This paper discusses wireless node architecture that enables the integrated control of route diversity and traffic engineering together with the control of wireless links whose quality and performance could be affected by radio propagation conditions. Taking into account the functional requirements for multi-hop mesh BFWA networks, such as adaptive link configuration with multiple channels, distributed network management, and traffic engineering in mesh networks, the entity called network control unit (NCU) is designed and developed on a common UNIX based server computer. Implemented functions and their performance are demonstrated using the experimental environments with wired networks.