NDLI: Receiver Initiated Network Allocation Vector Clearing Method in WLANs

Content Provider	IEEE Xplore Digital Library
Author	Lei Du Lan Chen
Copyright Year	2005
Description	Author affiliation: DoCoMo Beijing Commun. Labs Co., Ltd (Lei Du; Lan Chen)
Abstract	802.11 DCF defines a virtual carrier sense mechanism, via RTS/CTS handshaking, to reserve wireless channel. All the nodes overhearing either RTS or CTS set their network allocation vector (NAV) respectively, and defer the channel access for the expected time to finish the packet sequence transmission. The problems arise when RTS or CTS is not successfully received by the addressed node, which causes the channel waste resulted from unnecessary NAV setting. We specify them as RTS-induced and CTS-induced unnecessary NAV setting problems depending on the type of the packet where NAV is set from. Some literatures resolve the problem by channel sensing, though, they are focusing on RTS-induced problems, and infeasible in CTS-induced case due to the unavailability of transmission status at those nodes surrounding the destination. Besides, taking into consideration the path loss, multipath fading, movement, etc., the packet error rate of CTS becomes severe in wireless propagation environment. Therefore, it is necessary to resolve the CTS-induced problem as well. To this end we propose the receiver initiated NAV clearing (RINC) method to enhance the system performance. The method aims to notify surrounding nodes the transmission status via a clear packet initiated from the receiver. It eliminates the wasted inhibition period in case of broken sequence without interfering with ongoing transmissions. This paper first describes the unnecessary NAV setting problems and further illustrates the MAC operation of the proposed idea. After that, the performance in terms of throughput, average delay, etc. is evaluated by simulation. It is observed that the proposed method enhanced the throughput by utilizing the channel in a more efficient way
Starting Page	615
Ending Page	619
File Size	372454
Page Count	5
File Format	PDF
ISBN	0780391322
DOI	10.1109/APCC.2005.1554135
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-05
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Intelligent networks Wireless LAN Wireless sensor networks Throughput Media Access Protocol Physical layer Multiaccess communication Data communication Electronic mail Propagation losses WLAN Network Allocation Vector (NAV) Medium access control (MAC) NAV clearing
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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