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Cross-Layer Analysis of Rate Adaptation, DCF and TCP in Multi-Rate WLANs

J. Choi, K. Park, C.-k. Kim
2007 IEEE INFOCOM 2007 - 26th IEEE International Conference on Computer Communications  
Wireless Internet access is facilitated by IEEE 802.11 WLANs that, in addition to realizing a specific form of CSMA/CA-distributed coordination function (DCF)implement a range of performance enhancement  ...  Our performance analyses may be viewed as multi-protocol extensions of Bianchi's IEEE 802.11 model that, despite significantly increased complexity, lead to tractable and accurate performance predictions  ...  The authors would like to thank Sunwoong Choi of Samsung Electronics for his valuable discussion. This research was supported, in part, by NSF grant ANI-0082861, and a BK-21 grant.  ... 
doi:10.1109/infcom.2007.127 dblp:conf/infocom/ChoiPK07 fatcat:4okczuno6jgohn5ahq6vjry63y

Congestion-Aware Rate Adaptation in Wireless Networks: A Measurement-Driven Approach

Prashanth Aravinda Kumar Acharya, Ashish Sharma, Elizabeth M. Belding, Kevin C. Almeroth, Konstantina Papagiannaki
2008 2008 5th Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks  
Measurement studies show that congestion in a wireless network leads to the use of lower transmission data rates and thus reduces overall network throughput and capacity.  ...  Traditional rate adaptation solutions for IEEE 802.11 wireless networks perform poorly in congested networks.  ...  We evaluate the performance of the technique in a large WLAN with active users connected to the Internet.  ... 
doi:10.1109/sahcn.2008.11 dblp:conf/secon/AcharyaSBAP08 fatcat:454ie42n5jgc5i3lw5wr35vezq

Achievable Bandwidth Estimation for Stations in Multi-Rate IEEE 802.11 WLAN Cells

Eduard Garcia, David Viamonte, Rafael Vidal, Josep Paradells
2007 2007 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks  
This paper analyzes the effect of multi-rate transmissions in a CSMA wireless LAN environment.  ...  Having this information has evident applications in realtime multimedia transmissions over WLANs.  ...  Conclusions and future work We examined the effect of multi-rate transmissions in an IEEE 802.11 WLAN cell.  ... 
doi:10.1109/wowmom.2007.4351788 dblp:conf/wowmom/GarciaVVP07 fatcat:sftahwnzebam7nxmtoh3cdtggi

Rate Adaptation in Congested Wireless Networks through Real-Time Measurements

Prashanth A.K. Acharya, Ashish Sharma, Elizabeth M. Belding, Kevin C. Almeroth, Konstantina Papagiannaki
2010 IEEE Transactions on Mobile Computing  
Rate adaptation is a critical component that impacts the performance of IEEE 802.11 wireless networks.  ...  In congested networks, traditional rate adaptation algorithms have been shown to choose lower data-rates for packet transmissions, leading to reduced total network throughput and capacity.  ...  Therefore SampleRate uses a statistical view of packet loss rates over a period of time (e.g. 2s in [12] ) to choose the rate with the least expected transmission time.  ... 
doi:10.1109/tmc.2010.108 fatcat:vebcfr5q55ayfgswy73murifu4

An optimal station association policy for multi-rate ieee 802.11 wireless lans

Murad Abusubaih, Adam Wolisz
2007 Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems - MSWiM '07  
Moreover, the multi-rate flexibility provided by several IEEE 802.11 variants can cause low bit rate stations to negatively affect high bit rate ones and consequently degrade the overall network throughput  ...  In wireless local area networks (WLANs) often a station can potentially associate with more than one Access Point (AP).  ...  ACKNOWLEDGMENTS The authors gratefully acknowledge the helpful discussions with Dr.-Ing. James Gross on the Association issue in WLANs.  ... 
doi:10.1145/1298126.1298148 dblp:conf/mswim/AbusubaihW07 fatcat:kqhnm5gnhrhzjgnf7esy3jrmb4

A channel-aware adaptive control to the MAC protocol in rate adaptive wireless LANs

Yanfeng Zhu, Zhisheng Niu
2005 Wireless Communications and Mobile Computing  
In this paper, we focus on multi-rate WLANs and propose an adaptive transmission control scheme, which adapts the transmission probability according to the number of active stations, transmission rates  ...  Due to the low efficiency of legacy IEEE 802.11 MAC protocol, it has been the main bottleneck of wireless local area networks (WLANs).  ...  Moreover, the availability of IEEE 802.11a [17] and IEEE 802.11b [18] that the core standards for WLANs further accelerates the success of WLANs.  ... 
doi:10.1002/wcm.361 fatcat:dtqfc4dxrbhprlbowk35xda6jm

RF Isolated Real-Time Multipath Testbed for Performance Analysis of WLANs

Leon T. Metreaud, Kaveh Pahlavan
2006 2006 40th Annual Conference on Information Sciences and Systems  
Average throughput and instantaneous throughput variation of IEEE 802.11b and 802.11g WLANs operating in four different channels -a constant channel and IEEE 802.11 Task Group n (TGn) Channel Models A,  ...  In this thesis, a testbed is developed that enables real-time laboratory performance evaluation of WLANs.  ...  test environment with high levels of isolation from RF interference is necessary.  ... 
doi:10.1109/ciss.2006.286478 fatcat:efgxoywry5eypn43dg7ratipuq

Effective Bandwidth Utilization in IEEE802.11 for VOIP [article]

S. Vijay Bhanu, RM.Chandrasekaran, V. Balakrishnan
2010 arXiv   pre-print
A Bandwidth Data rate Moderation (BDM) algorithm has been proposed which correlates the data rate specified in IEEE802.11b with the free bandwidth.  ...  Voice over Internet protocol (VoIP) is one of the most important applications for the IEEE 802.11 wireless local area networks (WLANs).  ...  { Decr Drate to next LowerLevel () Incr BWfree to next UpperLevel () } According to IEEE 802.11b only four types of data rates are available, which are 1, 2, 5.5TABLE1: LEVELS OF DATA RATE Levels  ... 
arXiv:1005.0952v1 fatcat:4v56zmr26jhmhpj4px5oe67cje

Optimal CWmin selection for achieving proportional fairness in multi-rate 802.11e WLANs

Vasilios A. Siris, George Stamatakis
2006 Proceedings of the 1st international workshop on Wireless network testbeds, experimental evaluation & characterization - WiNTECH '06  
We investigate the optimal selection of minimum contention window values to achieve proportional fairness in a multirate IEEE 802.11e test-bed.  ...  The test-bed experiments show that when stations have different transmission rates and the same weight, proportional fairness achieves higher performance than the time-based fairness approaches, in terms  ...  opportunity limit shows that the former achieves higher performance in multi-rate scenarios, in terms of both aggregate utility and throughput.  ... 
doi:10.1145/1160987.1160996 dblp:conf/mobicom/SirisS06 fatcat:qu7zmsvyizfprjqhl62faop3g4

Scalable Video Transmission over the IEEE 802.11e Networks Using Cross-Layer Rate Control

C. H. Foh, Y. Zhang, Z. Ni, J. Cai
2007 2007 IEEE International Conference on Communications  
This paper presents a novel cross-layer rate control scheme for optimizing 3D wavelet scalable video transmission over the IEEE 802.11e wireless local area networks.  ...  The macro rate control uses bandwidth estimation to achieve optimal bit allocation with minimum distortion. The micro rate control employs an adaptive mapping of packets using video classifications.  ...  EXPERIMENTAL RESULTS In this section, we present the performance of the 3D wavelet SVC over the IEEE 802.11e WLANs.  ... 
doi:10.1109/icc.2007.294 dblp:conf/icc/FohZNC07 fatcat:iahrawiemffbjdjqrliynkhgqe

Robust rate adaptation for 802.11 wireless networks

Starsky H. Y. Wong, Songwu Lu, Hao Yang, Vaduvur Bharghavan
2006 Proceedings of the 12th annual international conference on Mobile computing and networking - MobiCom '06  
Our extensive experiments have shown that RRAA outperforms three well-known rate adaptation solutions (ARF, AARF, and SampleRate) in all tested scenarios, with throughput improvement up to 143%.  ...  Our study reveals that these seemingly correct guidelines can be misleading in practice, thus incur significant performance penalty in certain scenarios.  ...  However, the downside is the excessive overhead of RTS/CTS exchange, which can be significant with high transmission rates.  ... 
doi:10.1145/1161089.1161107 dblp:conf/mobicom/WongLYB06 fatcat:7extelj6yrgh7ny5pfebvpczxu

TCP Fairness Issues in IEEE 802.11 Networks: Problem Analysis and Solutions Based on Rate Control

Nicola Blefari-Melazzi, Andrea Detti, Ibrahim Habib, Alessandro Ordine, Stefano Salsano
2007 IEEE Transactions on Wireless Communications  
In this paper, we study the problem of maintaining fairness for TCP connections in wireless local area networks (WLANs) based upon the IEEE 802.11 standard.  ...  Hence, they are fully compatible with existing devices. Our performance analysis results prove the efficaciousness of our proposed solutions in achieving TCP fairness compared to existing approaches.  ...  are high, more TCP segments than TCP ACKs are transmitted in the WLAN.  ... 
doi:10.1109/twc.2007.348331 fatcat:noin6oz63jfhriby2a35chlxmi

Packet concatenation at the IP level for performance enhancement in wireless local area networks

Dzmitry Kliazovich, Fabrizio Granelli
2007 Wireless networks  
IEEE 802.11 WLAN performance in presence of small packets According to the statistics presented by researchers [2], the majority (over 85%) of Internet traffic is TCP-based.  ...  Along with performance improvement, PAC-IP enables packet-based fairness in medium access as well as includes QoS support module handling delay-sensitive traffic demands.  ...  Error Rate (PER) and (b) against Bit Error Rate (BER) Table 1 1 Achievable throughput of IEEE 802.11a, b Link speed TCP throughput Physical layer (Mb/s) (Mb/s) Efficiency (%) 802.11b 1 0.75  ... 
doi:10.1007/s11276-006-0734-6 fatcat:2ydul2heevfehaylf3ru6fk2cm

IEEE 802.11b Ad Hoc Networks: Performance Measurements

Giuseppe Anastasi, Eleonora Borgia, Marco Conti, Enrico Gregori
2005 Cluster Computing  
In this paper we investigate the performance of IEEE 802.11 ad hoc networks by means of an experimental study.  ...  The analysis of IEEE 802.11b reveals several aspects that are usually neglected in simulative studies.  ...  Specifically, 802.11b enables transmissions at 5.5 Mbps and 11 Mbps, in addition to 1 Mbps and 2 Mbps. 802.11b cards may implement a dynamic rate switching with the objective of improving performance.  ... 
doi:10.1007/s10586-005-6179-3 fatcat:gzodtgqmnbhdzk5goo4at4jf4e

Experimental evaluation of application performance with 802.11 PHY rate adaptation mechanisms in diverse environments

Yi Yang, M. Marina, R. Bagrodia
2006 IEEE Wireless Communications and Networking Conference, 2006. WCNC 2006.  
We examine the impact of physical layer rate adaptation mechanisms on the performance of real applications over 802.11 wireless links in diverse channel environments.  ...  We observe that the application performance with different rate adaptation mechanisms is dependent on the specific tradeoffs these mechanisms make at the link layer in an application-oblivious manner between  ...  Mike Fitz for help with the channel emulator.  ... 
doi:10.1109/wcnc.2006.1696649 dblp:conf/wcnc/YangMB06 fatcat:4vij5ka6k5bnjlmok7goztadmu
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