ICTACT Journal on Communication Technology

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DCRS: A Dynamic Contention Resolution Scheme for Wimax Networks


Affiliations
1 Department of Computer Science and Engineering, Sri Krishna College of Technology, India
2 Department of Computer Science and Engineering, Government College of Technology, India
     

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IEEE 802.16e has received wide attention as it supports high data rates and incredible pervasive connectivity with high Quality of Service (QoS) capabilities. To support QoS, many Bandwidth REQuest (BW-REQ) mechanisms are suggested in the literature for resource reservation in mobile WiMAX networks. There are chances for performance degradation with increase in the number of requests. QoS can be ensured if a contention resolution scheme is designed for sending BW-REQs to the Base Station (BS). To improve the efficiency of the random access mechanisms in the standard, a new mechanism called Dynamic Contention Resolution Scheme (DCRS) is proposed for IEEE 802.16e networks. DCRS groups the requests based on their service types and dynamically calculates the number of Contention slots based on the Arrival Rate (l) of requests.

Keywords

Broadband Wireless Access (BWA), IEEE 802.16e, Bandwidth Requests (BW-REQ), Contention Window, Quality of Service (QoS).
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  • DCRS: A Dynamic Contention Resolution Scheme for Wimax Networks

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Authors

M. Deva Priya
Department of Computer Science and Engineering, Sri Krishna College of Technology, India
M. L. Valarmathi
Department of Computer Science and Engineering, Government College of Technology, India
D. Prithviraj
Department of Computer Science and Engineering, Sri Krishna College of Technology, India

Abstract


IEEE 802.16e has received wide attention as it supports high data rates and incredible pervasive connectivity with high Quality of Service (QoS) capabilities. To support QoS, many Bandwidth REQuest (BW-REQ) mechanisms are suggested in the literature for resource reservation in mobile WiMAX networks. There are chances for performance degradation with increase in the number of requests. QoS can be ensured if a contention resolution scheme is designed for sending BW-REQs to the Base Station (BS). To improve the efficiency of the random access mechanisms in the standard, a new mechanism called Dynamic Contention Resolution Scheme (DCRS) is proposed for IEEE 802.16e networks. DCRS groups the requests based on their service types and dynamically calculates the number of Contention slots based on the Arrival Rate (l) of requests.

Keywords


Broadband Wireless Access (BWA), IEEE 802.16e, Bandwidth Requests (BW-REQ), Contention Window, Quality of Service (QoS).