The Interworking between EDCA 802.11e and DiffServ

Abstract

The provisioning of Quality-of-Service (QoS) with interworking between heterogeneous mobile environments will be of vital importance for the future success of mobile telecommunications. As each network technology has its own distinct QoS mechanism, it becomes essential to support interworking methods between different QoS technologies, in order to guarantee end-to-end QoS in heterogeneous networks. This paper investigates the interworking between Differentiated Service (DiffServ) core networks and the IEEE 802.11e QoS-enabled Wireless LAN (WLAN). An interworking framework is proposed, in addition to a mapping scheme from the DiffServ Per-Hob Behaviors (PHBs) to the 802.11e Enhanced Distributed Coordinated Access (EDCA) Access Categories (AC). The interworking framework is evaluated by means of simulation demonstrating the conformance of 802.11e EDCA to DiffServ PHBs in an end-to-end architecture.