Abstract
Next generation mobile networks are expected to provide seamless personal mobile communication and QoS. Since the demands for high speed Internet access as well as multimedia service had increased for last mile broadband access, the Scheduling is one of the most important components of BWA systems that affect system QoS provided to users. Priority queuing gives better throughput than the existing scheme. The IEEE 802.16 standard is a rapidly developing technology for broadband wireless access system. It supports QoS and has very high transmission rate. WiMAX is a standard wireless technology which is used to improve internet access and the multimedia services at very high speed to the end user. The purpose of QoS is to provide a definitive connection to the users who are intrested to connect to the WiMAX tower. In this study we propose a scheme to improve the QoS in the WiMAX system by increasing the throughput and decreasing the jitter. This study is based on the use of two scheduling algorithms to calculate the data in the MAC layer in order to provide maximum throughput. Moreover we propose a scheme to calculate the jitter between the various mobile users. The scheme performance is investigated through simulation. Priority Queuing gives better throughput compared to the Random Early Detection. Also jitter is minimized in priority queuing.
Highlights
Since the demands for high speed Internet access as well as multimedia service had increased for last mile broadband access, the Scheduling is one of the most important components of Broadband Wireless Access (BWA) systems that affect system Quality of service (QoS) provided to users
The key part of 802.16-packet scheduling, was undefined and is an open issue. This issue has been considered in our work and a scheduling algorithm is developed to improve the efficiency of the WiMAX system
We proposed a scheduling scheme to support Quality of service in IEEE 802.16 standards
Summary
Demands for high speed Internet access and multimedia service for residential and business customers had increased for last mile broadband access. The IEEE 802.16 standards (or WiMAX) are an emerging broadband wireless access technology to provide users with high speed multimedia services. WiMAX is a part of fourth Generation (4G) wireless communication technology. WiMAX supports point-to point or point -to-multipoint connection. Multiple standard of WiMAX such as 802.16e, 802.16b for mobile connectivity from fixed location. The IEEE 802.16 supports QoS and has very high transmission rate. The key part of 802.16-packet scheduling, was undefined and is an open issue. This issue has been considered in our work and a scheduling algorithm is developed to improve the efficiency of the WiMAX system
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