NDLI: Adaptive admission control and packet scheduling schemes for QoS provisioning in multihop WiMAX networks

Content Provider	IEEE Xplore Digital Library
Author	Rengaraju, P. Chung-Horng Lung Srinivasan, A.
Copyright Year	2012
Description	Author affiliation: EION Inc., Ottawa, Ontario, Canada (Srinivasan, A.) \|\| Department of Systems and Computer Engineering, Carleton University, Ottawa, Ontario, Canada (Rengaraju, P.; Chung-Horng Lung)
Abstract	Selection of Call Admission Control (CAC) and packet scheduling are crucial for multihop WiMAX networks to satisfy the Quality of Service (QoS) for end users. In this paper, we propose an adaptive CAC method and two different scheduling schemes for multihop WiMAX networks. The proposed CAC in the multihop Base Station (BS) reserves some bandwidth (BW) for the mobile users and changes the BW reservation adaptively based on most recent requests from the handover users. When there are few or no handover users exist in a network, the remaining reserved BW is allocated to low priority Best Effort (BE) users for effective BW utilization. While admitting the New Calls (NCs) or Handover Calls (HCs), the BS verifies both BW and multihop delay requirements to satisfy the QoS of the call. Next, we propose two downlink scheduling algorithms (P+E) and (P+TB) for the BS in multihop networks. The (P+E) scheduler combines the Priority and Earliest Due Date (EDD) scheduling methods, while the (P+TB) scheduler combines the Priority and Token Bucket (TB) scheduling methods. When the network is lightly or moderately loaded, the (P+E) scheduler performs well for both single and multihop users but the performance of real time services are highly affected under high load conditions. On the other hand, the (P+TB) scheduler has very good QoS performance for real time services under high load conditions and also has closer QoS performance to (P+E) scheduler for multihop users under low and moderate load conditions. The simulation results for CAC show that the proposed CAC have lower Call Drop Probability (CDP) for HCs than existing fixed BW reservation policy. The CAC admits more NCs when fewer number of HCs arriving at the BS. The simulation results for scheduling show that the (P+E) scheduler outperforms the (P+TB) scheduler when the system is moderately loaded and the (P+TB) scheduler outperforms the (P+E) scheduler when the system is fully loaded.
Starting Page	866
Ending Page	871
File Size	483142
Page Count	6
File Format	PDF
ISBN	9781457713781
e-ISBN	9781457713798
DOI	10.1109/IWCMC.2012.6314318
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-27
Publisher Place	Cyprus
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	multihop WiMAX Call Admission Control Packet Scheduling Scheduling algorithms Quality of service Spread spectrum communication WiMAX Scheduling Real-time systems Delay
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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