Delivering Quality Of Services For Media Streaming In Group Communication Over Mobile Ad Hoc Networks (QASAN)

Abstract

The major challenge faced by designers of ad hoc network is the deployment of end-to-end quality-of-service support mechanisms for streaming media services over an adhoc group network. Group-oriented services over large ad-hoc networks has a big impact on the needs of streaming services communication in terms of mobility, quality of service (QoS) support and multicasting. In Ad hoc networks, where such features are not embedded with its architecture, it is necessary to develop QoS multicasting strategies. This paper focuses on the basic building blocks of an ad hoc group communication scheme, which achieves multicasting optimal QoS efficiency OptiQ_Policy algorithm by tracking resource availability in a node's neighborhood based on resource reservations, which announces the required QoS before each session initiation. The primary quality of service (QoS) issues such as required bandwidth, message delay, traffic type and hop count per route improves the efficiency of streaming services over adhoc network. Streaming services support voice, data and video traffic by assessing and adjusting for various levels of QoS. The performance analysis is performed on functional prototype of QASAN ad hoc mobile wireless network with emphasis on service satisfaction for multiple group conference sessions. The performance of QASAN network is well compared with QoS-aware versions of AODV [20] and TORA[17], well-known ad-hoc routing and limited QoS protocols. Using the SPRUCE[23] bandwidth traffic gathering tool, with a set of C++ modules an extensive set of performance experiments were conducted for these protocols with QASAN on a wide variety of mobility patterns and reservation strategies.