Jitter analysis of homogeneous traffic in wireless differentiated services networks

A critical challenge for wireless networking vendors and cellular/mobile phone carrier companies is to be able to accurately estimate the quality of service (QoS) that can be provided based on the network architecture, router/switch topology, and protocol applied. In addition, due to the development of technologies like multiprotocol label switching (MPLS) and generalized MPLS (GMPLS), which can deploy differentiated services (DiffServ), the variation in QoS performance based on the priority assignment is of significant importance. This paper provides a call admission control (CAC) scheme and a theoretical analysis of delay jitter of homogeneous traffic based on a nonpreemptive head-of-the-line (HOL) priority scheme in wireless networks that apply automatic retransmission request (ARQ) to recover the packet errors. The CAC scheme regulates the lower class traffic to provide the required levels of delay jitter for the higher priority classes.