FLC-based MBWIMA/UMTS protocol for integrated video/voice/data services in UTRA TDD model

摘要

An intelligent medium access control (MAC) protocol based on fuzzy logic control (FLC) is proposed and compared with a general packet radio system in UMTS (GPRS/UMTS) and the movable boundary wireless integrated multiple access in UMTS (MBWIMA/UMTS) protocols. The integrated video/voice/data services of UMTS in UTRA TDD mode have different transmission properties. By fuzzy logic control, the resources of the wireless communication can be intelligent assigned for different types of mediums. The voice-video dropping probability and data packet delay are input to FLC to optimally select the maximum number of voice slots. The simulation results demonstrate that the FLC-based MBWIMA/UMTS protocol can greatly improve the voice-video call dropping probability of the GPRS/UMTS protocol under heavy traffic load conditions, providing low voice-video call completion rate and high voice call arrival rate. The data packet delay of the FLC-based MBWIMA/UMTS protocol is less than that for the MBWIMA/UMTS, priority scheme and GPRS/UMTS protocols.