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Avoiding collisions between IEEE 802.11 and IEEE 802.15.4 through coexistence aware clear channel assessment

Lieven Tytgat (UGent) , Opher Yaron (UGent) , Sofie Pollin, Ingrid Moerman (UGent) and Piet Demeester (UGent)
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Abstract
More and more devices are becoming wirelessly connected. Many of these devices are operating in crowded unlicensed bands, where different wireless technologies compete for the same spectrum. A typical example is the unlicensed ISM band at 2.4 GHz, which is used by IEEE 802.11bgn, IEEE 802.15.4, and IEEE 802.15.1, among others. Each of these technologies implements appropriate Media Access Control (MAC) mechanisms to avoid packet collisions and optimize Quality of Service. Although different technologies use similar MAC mechanisms, they are not always compatible. For example, all CSMA/CA-based technologies use Clear Channel Assessment (CCA) to detect when the channel is free; however, in each case it is specifically designed to improve detection reliability of the specific technology. Unfortunately, this approach decreases the detection probability of other technologies, increasing the amount of cross-technology collisions. In this article, we introduce the concept of coexistence aware CCA (CACCA), which enables a node operating in one technology to backoff for other coexisting technologies as well. As a proof of concept, we analyze the Packet Error Rate(PER) incurred by an IEEE 802.15.4 network in the presence of IEEE 802.11bg interference, and assess the PER reduction that is achieved by using CACCA.
Keywords
IEEE 802.11, IEEE 802.15.4, coexistence, clear channel assessment (CCA), coexistence aware clear channel assessment

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MLA
Tytgat, Lieven, Opher Yaron, Sofie Pollin, et al. “Avoiding Collisions Between IEEE 802.11 and IEEE 802.15.4 Through Coexistence Aware Clear Channel Assessment.” EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING (2012): 1–15. Print.
APA
Tytgat, Lieven, Yaron, O., Pollin, S., Moerman, I., & Demeester, P. (2012). Avoiding collisions between IEEE 802.11 and IEEE 802.15.4 through coexistence aware clear channel assessment. EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, 1–15.
Chicago author-date
Tytgat, Lieven, Opher Yaron, Sofie Pollin, Ingrid Moerman, and Piet Demeester. 2012. “Avoiding Collisions Between IEEE 802.11 and IEEE 802.15.4 Through Coexistence Aware Clear Channel Assessment.” Eurasip Journal on Wireless Communications and Networking: 1–15.
Chicago author-date (all authors)
Tytgat, Lieven, Opher Yaron, Sofie Pollin, Ingrid Moerman, and Piet Demeester. 2012. “Avoiding Collisions Between IEEE 802.11 and IEEE 802.15.4 Through Coexistence Aware Clear Channel Assessment.” Eurasip Journal on Wireless Communications and Networking: 1–15.
Vancouver
1.
Tytgat L, Yaron O, Pollin S, Moerman I, Demeester P. Avoiding collisions between IEEE 802.11 and IEEE 802.15.4 through coexistence aware clear channel assessment. EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING. 2012;1–15.
IEEE
[1]
L. Tytgat, O. Yaron, S. Pollin, I. Moerman, and P. Demeester, “Avoiding collisions between IEEE 802.11 and IEEE 802.15.4 through coexistence aware clear channel assessment,” EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING, pp. 1–15, 2012.
@article{2957015,
  abstract     = {More and more devices are becoming wirelessly connected. Many of these devices are operating in crowded unlicensed bands, where different wireless technologies compete for the same spectrum. A typical example is the unlicensed ISM band at 2.4 GHz, which is used by IEEE 802.11bgn, IEEE 802.15.4, and IEEE 802.15.1, among others. Each of these technologies implements appropriate Media Access Control (MAC) mechanisms to avoid packet collisions and optimize Quality of Service. Although different technologies use similar MAC mechanisms, they are not always compatible. For example, all CSMA/CA-based technologies use Clear Channel Assessment (CCA) to detect when the channel is free; however, in each case it is specifically designed to improve detection reliability of the specific technology. Unfortunately, this approach decreases the detection probability of other technologies, increasing the amount of cross-technology collisions. In this article, we introduce the concept of coexistence aware CCA (CACCA), which enables a node operating in one technology to backoff for other coexisting technologies as well. As a proof of concept, we analyze the Packet Error Rate(PER) incurred by an IEEE 802.15.4 network in the presence of IEEE 802.11bg interference, and assess the PER reduction that is achieved by using CACCA.},
  articleno    = {137},
  author       = {Tytgat, Lieven and Yaron, Opher and Pollin, Sofie and Moerman, Ingrid and Demeester, Piet},
  issn         = {1687-1499},
  journal      = {EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING},
  keywords     = {IEEE 802.11,IEEE 802.15.4,coexistence,clear channel assessment (CCA),coexistence aware clear channel assessment},
  language     = {eng},
  pages        = {137:1--137:15},
  title        = {Avoiding collisions between IEEE 802.11 and IEEE 802.15.4 through coexistence aware clear channel assessment},
  url          = {http://dx.doi.org/10.1186/1687-1499-2012-137},
  year         = {2012},
}

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