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Suresh, R.
- Performance Analysis of Queuing Disciplines for Difference Services Using OPNET Tool
Authors
1 Division of Networking, School of Electronics Engineering, VIT University, IN
2 Division of Signal Processing, School of Electronics Engineering, VIT University, IN
Source
Wireless Communication, Vol 5, No 11 (2013), Pagination: 408-413Abstract
Now a day Internet only provides Best Effort Service. Traffic is processed as earliest as possible, but there is no assurance of timelines or real delivery. With the fast transformation of the Internet into a commercial infrastructure, demands for service quality have quickly developed. People of the current world are very much dependent on various network services like VOIP, Videoconferencing and File Transfer. Different types of Traffic Management systems are used in those services. Queuing is one of the very important mechanisms in traffic management system. Each router in the network must implement some queuing discipline that governs how packets are buffered while waiting to be transmitted. This paper gives a comparative analysis of three queuing systems FIFO, PQ and WFQ. The study has been carried out on some issues like: Traffic dropped Traffic Received and packet end to end delay and the simulation results shows that WFQ technique has a better-quality than the other techniques.Keywords
FIFO Queue, Priority Queue, Weighted-Fair Queue, QoS.
- Energy Optimization Packet Scheduling Algorithms on a Mobile Wimax Using Ns2
Authors
1 CEG, Anna University Chennai, Tamil Nadu, IN
2 VIT University, Vellore, Tamil Nadu, IN
3 Department of Electronics and Communication Engineering, CEG, Anna University Chennai, Tamil Nadu, IN
Source
Wireless Communication, Vol 1, No 6 (2009), Pagination: 243-248Abstract
Recently, mobile communication technologies have been developed rapidly. The IEEE 802.16e wireless metropolitan area network (WMAN) standard is an emerging technology to support roaming mobility of mobile stations (MSs) in outdoor environment. For MSs powered by batteries, the standard supports power saving mode to conserve battery power meanwhile fulfilling the requirements of quality of services. Regarding to different service types, standard defines three different power saving types for them and each type has its own power saving parameters. In this paper, Broadband wireless access systems usually provide flexible sleep-mode operations for mobile stations to conserve their energy during idle or active mode. For Mobile WiMAX, the IEEE 802.16e, offers several power-saving classes that can be associated with different types of network connections to minimize power consumption of mobile stations.