An analysis of unreliability and asymmetry in low-power wireless links

被引：195
作者：
Zamalloa, Marco Zuniga [1 ]
Krishnamachari, Bhaskar [1 ]
机构：
[1] Univ So Calif, Dept Elect Engn Syst, Los Angeles, CA 90089 USA
来源：
ACM TRANSACTIONS ON SENSOR NETWORKS | 2007年 / 3卷 / 02期
关键词：
measurement; performance; theory; verification; wireless link; transitional region; hardware variance; communication theory; probability theory;
D O I：
10.1145/1240226.1240227
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Experimental studies have demonstrated that the behavior of real links in low-power wireless networks (such as wireless sensor networks) deviates to a large extent from the ideal binary model used in several simulation studies. In particular, there is a large transitional region in wireless link quality that is characterized by significant levels of unreliability and asymmetry, significantly impacting the performance of higher-layer protocols. We provide a comprehensive analysis of the root causes of unreliability and asymmetry. In particular, we derive expressions for the distribution, expectation, and variance of the packet reception rate as a function of distance, as well as for the location and extent of the transitional region. These expressions incorporate important environmental and radio parameters such as the path loss exponent and shadowing variance of the channel, and the modulation, encoding, and hardware variance of the radios.
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页数：34
相关论文
共 22 条
[11]  
Levis P., 2003, SENSYS 03, P126, DOI DOI 10.1145/958491.958506
[12]  
MIORANDI D, 2005, P 24 ANN JOINT C IEE
[13]  
NIKOOKAR H, 1993, UN PERS COMM PERS CO
[14]  
POOR R, 2004, COMMUNICATION
[15]  
Rappaport T.S., 2003, WIRELESS COMMUNICATI, V2nd
[16]   914 MHZ PATH LOSS PREDICTION MODELS FOR INDOOR WIRELESS COMMUNICATIONS IN MULTIFLOORED BUILDINGS [J].
SEIDEL, SY ;
RAPPAPORT, TS .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1992, 40 (02) :207-217
[17]  
SOHRABI K, 1999, P IEEE 49 VEH TECHN
[18]  
Son D., 2006, P 4 INT C EMB NETW S, P237
[19]   Experimental study of the effects of transmission power control and blacklisting in wireless sensor networks [J].
Son, DJ ;
Krishnamachari, B ;
Heidemann, J .
2004 FIRST ANNUAL IEEE COMMUNICATIONS SOCIETY CONFERENCE ON SENSOR AND AD HOC COMMUNICATIONS AND NETWORKS, 2004, :289-298
[20]  
Zhao Jerry., 2003, SENSYS 03, P1
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