Study on the mesh mode of IEEE 802.16

Abstract

[[abstract]]The new Wireless-MAN standard, IEEE 802.16, provides broadband, wide coverage, was one of the most worthy technique. there are two established modes for IEEE 802.16, One is PMP another is Mesh, There are two mechanisms to schedule data transmission in the IEEE 802.16 Mesh networks: centralized and distributed scheduling.In the centralized scheduling scheme, the BS works like the cluster head and determines time slot allocation of each SS. In order to transmit data packets, the SS is required to submit the request packet to the BS via the control channel. The BS grants the access request by sending the slot allocation schedule call UP_MAP to all SS nodes. In the distributed scheduling scheme, if the SS have data to send, it need to compete with it neighbors. So that it can start data transmission. In this paper, for clarity purposes we will focus on a two classes system and use an approximation two-dimensional Markov mode to analyze the system performance, though the analysis approach may be easily extended to general class case