Coexistence Aware Clear Channel Assessment
Wireless sensor networks are used by an ever growing number of applications which have ever increasing Quality of Service requirements. The available unlicensed industrial scientific and medical bands – where wireless sensor networks typically operate – are crowded with a number of technologies interfering with each other. Delivering a sufficiently high QoS within these frequency bands is therefore becoming more and more difficult. A theoretic concept named Coexistence Aware Clear Channel Assessment (CACCA) promises more reliable QoS when different technologies utilize the same. Within this paper we propose two methods to perform CACCA and create an SDR prototype to show that CACCA can achieve a high packet error rate reduction in an IEEE 802.15.4 network when it coexists with IEEE 802.11.
KeywordsCoexistence Sensor Network Wireless Interference Avoidance IEEE 802.11 IEEE 802.15.4 CCA SDR WARP FPGA
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- 1.Pollin, S., Tan, I., Hodge, B., Chun, C., Bahai, A.: Harmful coexistence between 802.15.4 and 802.11: a measurement-based study. In: Proceedings of 3rd International Conference on Cognitive Radio Oriented Wireless Networks and Communications, pp. 1–6 (2008)Google Scholar
- 2.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)Google Scholar
- 3.Thonet, G., Allard-Jacquin, P., Colle, P.: ZigBee – WiFi Coexistence White paper and Test Report, http://www.zigbee.org
- 4.Yuan, W., Wang, X., Linnartz, J.-P.M.G.: A Coexistence Model of IEEE 802.15.4 and IEEE 802.11b/g. In: 14th IEEE Symposium on Communications and Vehicular Technology in the Benelux, pp. 1–5 (November 2007)Google Scholar
- 5.IEEE Std. 802.15.1 - 2005, IEEE Standard for Information Technology - Telecommunications and Information exchange between systems - Local and metropolitan area networks - Specific requirements – Part 15.1: Wireless medium access control (MAC) and physical layer (PHY) specifications for wireless personal area networks (WPANs)Google Scholar
- 6.IEEE Std. 802.11 - 2007, IEEE Standard for Information Technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) SpecificationsGoogle Scholar
- 7.IEEE Std. 802.15.4 - 2006, IEEE Standard for Information Technology - Telecommunications and Information exchange between systems - Local and metropolitan area networks - Specific requirements – Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (WPANs)Google Scholar
- 8.Rice University WARP Project, http://warp.rice.edu
- 9.Schiller, J.H.: Medium Access Control. In: Mobile Communications, 2nd edn. Addison Wesley (2003)Google Scholar
- 11.Universal Software Radio Peripheral, http://www.ettus.com
- 12.Sora Project, https://research.microsoft.com/en-us/projects/sora
- 14.Tytgat, L., Barrie, M., Gonçalves, V., Yaron, O.Y., Moerman, I., Demeester, P., Pollin, S., Ballon, P., Delaere, S.: Techno-economical Viability of Cognitive Solutions for a Factory Scenario. In: 2011 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN), Aachen, Germany, May 3-6, pp. 182–192 (2001)Google Scholar