QoS Provisioning for Multicast Routing and Channel Assignment in Wireless Mesh Network

Abstract

The scope of development and research in the field of wireless mesh networks (WMN) is wide open and the focus has also been widened from simple channel assignment to multicast routing further moving towards providing quality of service (QoS) to the end users. The nodes in the network are of multi radio multi channel (MRMC) model. The efficiency of the network is termed as quality of service. For providing the QoS to the end users different techniques have been evolved which caters situations as QoS provisioning in the channel assignment phase, QoS provisioning in the multicast routing phase, and QoS provisioning in the channel assignment and multicast routing phase. This chapter presents a detailed study of QoS provisioning in WMN. It also classifies the techniques as: QoS provision in channel assignment, QoS provision in multicast routing and QoS provision in channel assignment as well as multicast routing.

Key Terms in this Chapter

Channel Assignment: Channel assignment is the process of assigning separate orthogonal channel or partially over-lapped orthogonal channels to all the nodes in the communication range. The main motive behind assignment of channels is to reduce the interference impact and proper delivery of packets on time. For the WMN in channel assignment phase, the entire range of channels in IEEE 802.11 (a, aa, b, g, n) standard is utilized for assigning channels in the links. By the term link, it means the links between the mesh nodes. Channel allocation plays the most crucial role in achieving better performance of the network.