NDLI: Timestepped Stochastic Simulation of 802.11 WLANs

Content Provider	IEEE Xplore Digital Library
Author	Vasan, A. Shankar, A.U.
Copyright Year	2007
Description	Author affiliation: Dept. of Comput. Sci., Univ. of Maryland, College Park, MD (Vasan, A.; Shankar, A.U.)
Abstract	We present Timestepped stochastic simulation (TSS) for 802.11 WLANs. TSS overcomes scalability problems of packet-level simulation by generating a sample path of the system state S(t) at time t = delta, 2delta, . . . , rather than at each packet transmission. In each timestep [t, t + delta], the distribution Pr( S(t + delta) \| S(t) ) is obtained analytically, and S(t + delta) is sampled from it. Our method computes sample paths of instantaneous goodput Ni (t) for all stations i in a WLAN over timesteps of length . For accurate modeling of higher layer protocols, should be lesser than their control timescales (e.g., TCP's RTT). At typical values of (e.g, 50 ms), Ni(t)'s are correlated across both timesteps (e.g., a station with high contention window has low goodput for several timesteps) and stations (since they share the same media). To model these correlations, we obtain, jointly with the Ni (t) 's, sample paths of the WLAN's DCF state, which consists of a contention window and a backoff counter at each station. Comparisons with packet level simulations show that TSS for WLANs is accurate and yields an improvement in simulation runtime of up to two orders of magnitude. Our transient analysis of 802.11 complements prior literature and also yields: (1) the distribution of the instantaneous aggregate goodput; (2) the distribution of instantaneous goodput of a tagged station conditioned on its MAC state; and (3) quantification of short-term goodput unfairness.
Starting Page	15
Ending Page	22
File Size	321817
Page Count	8
File Format	PDF
ISBN	9781424418534
ISSN	15267539
DOI	10.1109/MASCOTS.2007.64
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-24
Publisher Place	Turkey
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Stochastic processes Computational modeling Computer simulation Wireless LAN Runtime Media Access Protocol Computer science Educational institutions Scalability Counting circuits
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

Enhancing MAC protocol for voice over IEEE 802.11 WLANs

Performance evaluation of IEEE 802.11 with stochastic reward nets

The IEEE 802.11 active probing analysis and enhancements

New insights from a fixed point analysis of single cell IEEE 802.11 WLANs

A Dual Authentication Protocol for IEEE 802.11 Wireless LANs

Multi-rate 802.11 WLANs

Throughput analysis of a novel backoff algorithm for IEEE 802.11 WLANs

On the performance of CFP repetition rate in IEEE 802.11 WLANs supporting IP-mobility

Timestepped Stochastic Simulation of 802.11 WLANs ∗ Abstract—We present Timestepped Stochastic Simulation

Timestepped Stochastic Simulation of 802.11 WLANs

Similar Documents

Enhancing MAC protocol for voice over IEEE 802.11 WLANs

Performance evaluation of IEEE 802.11 with stochastic reward nets

The IEEE 802.11 active probing analysis and enhancements

New insights from a fixed point analysis of single cell IEEE 802.11 WLANs

A Dual Authentication Protocol for IEEE 802.11 Wireless LANs

Multi-rate 802.11 WLANs

Throughput analysis of a novel backoff algorithm for IEEE 802.11 WLANs

On the performance of CFP repetition rate in IEEE 802.11 WLANs supporting IP-mobility

Timestepped Stochastic Simulation of 802.11 WLANs ∗ Abstract—We present Timestepped Stochastic Simulation

Timestepped Stochastic Simulation of 802.11 WLANs