Abstract
Wireless mesh network (WMN) is a key technology for supporting a variety of application scenarios. Recently, it evolves toward a multi-radio multi-channel (MR-MC) WMN architecture, which can improve network performance by equipping each node with multiple radio interfaces and by using multiple non-overlapping channels. This evolution poses new challenges on network design. Specifically, topology control (TC), one of the fundamental research topics in WMNs, has also received extensive attention in MR-MC WMNs. This article presents an overview of TC mechanisms in the existing literature with emphasis on the mutual dependence of TC on other networking issues such as power control, channel assignment, routing, and directional antennas.
Highlights
Wireless mesh networks (WMNs), with multiple hops and mesh topology, has been evolved as a key technology for a variety of application scenarios including broadband home networking, community and neighborhood networking, enterprize networking, and metropolitan area networking [1]
In Section ‘Challenges on topology control in Multi-radio multi-channel (MR-MC) WMNS’, we describe the challenges on TC facing in MR-MC WMNs
Future research directions As we argued in this article, topology control are coupled together with power control (PC), channel assignment (CA), and routing functions, and it is better to view TC as a management functional block in connection with protocol layers in MR-MC WMNs
Summary
Wireless mesh networks (WMNs), with multiple hops and mesh topology, has been evolved as a key technology for a variety of application scenarios including broadband home networking, community and neighborhood networking, enterprize networking, and metropolitan area networking [1]. When design TC mechanisms, it is a challenge to allocate transmitting power levels and orthogonal channels to every interface of nodes efficiently with the purpose of reducing the effect of interference and maintaining the connectivity of the entire network.
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