A Channel State Analysis of ARS and CRAS in 802.16 WiMax Networks Rao A. Maheswara1,*, Varadarajan S.2,**, Giriprasad M.N.1,*** 1College of Engineering, JNTU, Anantapur 2College of Engineering, Sri Venkateswara University, Tirupati *amreddy_73@yahoo.co.in
**varadasouri@gmail.com
***mahendran_gp@yahoo.co.in
Online published on 27 June, 2017. Abstract Channel error is one of the factors which disrupt the fair allocation of any traffic. In this paper, we propose a channel condition based rate allocation method which takes into account the channel error. Based on Admission and Rate Control, we determine the channel condition as good or bad based on signal to interference plus noise ratio (SINR) and POS. In case of a buffer overflow, we determine our approach of earliest deadline technique, to deviate the traffic through lower priority channels. In the second phase, we develop a predictive rate control technique, using queue length and bandwidth requirement information. Thus the value of predictive rate control helps the base station to predict the future traffic load and adjust the rate based on it. By simulation results, we show that our proposed scheme attains better throughput and fairness with reduced delay. Top Keywords Adaptive Route Scheduling, Channel Rate Allocation Scheme, Quality of Service, SINR, WiMax, Highest Urgency First, Best effort service rtps, nrtps, UGS. Top |