Abstract
Objectives: As a result of signal transmission in WiMAX too long distance, and because there are many request packets arrive at WiMAX gateway request handovers, this cost a congestion which may result in loss or delay in packet time sensitive. The objectives of this paper are to investigate the delay when packets with real time sensitive handover in WiMAX gateway and to measure and enhance the handover performance. Methods/Statistical Analysis: To overcome this problem, and achieve the objectives is propose a new scheme Resource Reservation Protocol & Random Early Detection with Weighted Fair Queuing (RR-WFQ) in order to analyze and enhance delay for real time packet in WiMAX gateway. This schema applies all Resource Reservation Protocol (RSVP), Random Early Detection (RED), and Weighted Fair Queuing (WFQ) as a Scheduling, RED as a mechanism and RSVP as a signaling protocol. Findings: The proposed scheme enhances the QoS by minimizing the delay in WiMAX gateway and BS. The scheme enhances the delay in all queues in a gateway, and video conferencing. The result of the scheme shows an enhancement delay in the WiMAX gateway. Application/Improvements: Mathematical analysis and modeling have been done using queuing theory. Simulation has been done using OPNET simulation. Simulation results for the new approach confirms that has minimized delay in WiMAX gateway and BS the gateway and enhances the QoS.
Highlights
In WiMAX communication area good coverage, low cost, and better data rate are the goals of designers
Congestion always happens in WIMAX gateway because of the huge number of packets arrive at the gateway and requesting handover
Results of figures 7-9 show that the proposed scheme enhances the delay in WiMAX gateway
Summary
In WiMAX communication area good coverage, low cost, and better data rate are the goals of designers. Signaling real time packet sensitive in WiMAX is an open issue because it is unspecified by IEEE 802.16-2004, IEEE 802.16d, IEEE 802.16e or IEEE 802.16j1. Congestion always happens in WIMAX gateway because of the huge number of packets arrive at the gateway and requesting handover. Since no network can guarantee hundred percent the QoS, which result to packet lost and delay[2]. A protocol like RSVP is provided in order to enhance QoS End-to-End delay, loss, delay variation and throughput[3]. The real goals of RSVP are to improve the heterogeneous network, to be flexible with the direction of transmission, and to make use of all the resources[4].
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