QoS based Admission Control using Multipath Scheduler for IP over Satellite Networks

Abstract

This paper presents a novel scheduling algorithm to support quality of service (QoS) for multiservice applications over integrated satellite and terrestrial networks using admission control system with multipath selection capabilities. The algorithm exploits the multipath routing paradigm over LEO and GEO satellites constellation in order to achieve optimum end-toend QoS of the client-server Internet architecture for HTTP web service, file transfer, video streaming and VoIP applications. The proposed multipath scheduler over the satellite networks advocates load balancing technique based on optimum time-bandwidth in order to accommodate the burst of application traffics. The method tries to balance the bandwidth load and queue length on each link over satellite in order to fulfil the optimum QoS level for each traffic type. Each connection of a traffic type will be routed over a link with the least bandwidth load and queue length at current time in order to avoid congestion state. The multipath routing scheduling decision is based on per connection granularity so that packet reordering at the receiver side could be avoided. The performance evaluation of IP over satellites has been carried out using multiple connections, different file sizes and bit-errorrate (BER) variations to measure the packet delay, loss ratio and throughput. Keyword:Admission control IP over satellites Multipath scheduler Network simulator (NS-2) Quality of service (QoS)

Internet data traffic analysis for identifying usage trends on each day of the week in a university

“…Extensive studies have been carried out on internet traffic monitoring, and this is an indicator of its importance in network management for identifying heavy bandwidth internet traffic for controlling applications that utilize high bandwidth [11] and ultimately for ensuring high quality of service [8,[20][21][22][23]. In this study, the internet traffic data generated in a smart university in Nigeria is statistically analysed to identify usage trends on each of the seven days of the week over a period of one year.…”

Overall Design of Satellite Networks for Internet Services with QoS Support

“…In the satellite network to support the QoS, inherent characteristics such as a long propagation delay and use of a higher frequency should be addressed. Substantial research has focused on the needed technologies to provide Internet services satisfying users in the satellite network [10][11][12][13][14][15][16][17][18][19][20][21][22]. In [11], a resource allocation scheme including a packing algorithm was proposed to provide QoS connections over multi-frequency time division multiple access (MF-TDMA) satellite systems.…”

“…The authors of [15] considered the gateway handover and network coding for the impaired gateway in the smart gateway diversity of satellite networks for the QoS support. In [16], QoS-based admission control using a multipath scheduler was proposed for IP over satellite networks. The authors of [17] proposed the distributed QoS awareness in the satellite communication network with optimal routing to consider inter-satellite links.…”

A Statistical Approach to Adaptive Playout Scheduling in Voice Over Internet Protocol Communication

“…This causes the end users to experience a broken, buzzing and delayed speech. Extensive research is going on this area to increase the quality of communication [2][3][4]. Many researchers proposed receiver side Packet Loss Concealment (PLC) methods [5].…”