IEEE802.16 Multi-class Capacity including AMC scheme and QoS Differentiation for Initial and Bandwidth request ranging

Abstract

In this paper we study the capacity of the OFDMA-based IEEE802.16 WiMAX network in the presence of two types of traffic, streaming (Real-Time) and elastic (Non-Real-Time) including Adaptive Modulation and Coding (AMC). Many studies in the literature assumed that packets or calls arrive to the system according to poisson process for the sake of analytical simplicity. However, it has been recently proved that the exponential distribution is inappropriate [2]. Based on the generalized traffic processes developed [2], we study the media access control (MAC) layer of WiMAX and develop a resource allocation that maintain the bit rate of real time connections independently of the user position in the cell. Using Markovian analysis we evaluate the impact of our resource allocation on the non-real time connection (NRT) as expected delay and throughput.

Call Admission Control Algorithms Based on Random Waypoint Mobility for IEEE802.16e Networks

“…Adaptive modulation increases data transmission throughput and the system reliability by using different constellation sizes on different sub-carriers. The authors in (Peyre et al, 2008) introduce a new Quality of Service (QoS) for real-time calls in IEEE802.16e Multi-class Capacity including AMC scheme and QoS Differentiation for Initial and Bandwidth Request Ranging (Seo et al, 2004). The QoS defined in this work is to maintain a same bit rate for RT calls independently of user position in the cell.…”