In your case, as all the 6 nodes (including BS) are in a single cell, nothing much can be done. However, having five different motes to constitute the BS with each operating in a different frequency can definitely help.
BTW, for general case, there are several MAC protocols are proposed that exploit channel diversity, but I think there are very less number of implementations. Following is the list of protocols that I am aware of: 1) Ozlem Durmaz Incel, Pierre Jansen, and Sape Mullender, MC-LMAC: A Multi- Channel MAC Protocol for Wireless Sensor Networks, (Under Submission as of late 2009), Technical Report, TR-CTIT-08-61, Centre for Telematics and Information Technology, University of Twente, Enschede, ISSN 1381-3625, 2009. 2) Yafeng Wu, J.A. Stankovic, Tian He, and Shan Lin, Realistic and Efficient Multi- Channel Communications in Wireless Sensor Networks, in Proceedings of IEEE INFOCOM08, April 2008. 3) Y. Kim, H. Shin, and H. Cha, Y-MAC: An Energy-Efficient Multi-Channel MAC Protocol for Dense Wireless Sensor Networks, in Proceedings of International Con- ference on Information Processing in Sensor Networks (IPSN08), 2008. 4) Hieu Khac Le, Dan Henriksson, Tarek Abdelzaher, A Practical Multi-Channel Medium Access Control Protocol for Wireless Sensor Networks, in Proceedings of International Conference on Information Processing in Sensor Networks(IPSN08), 2008. 5) Hoi-Sheung So,W.Walrand, and J. JeonghoonMo, McMAC: A Parallel Rendezvous Multi-Channel MAC Protocol, in Proceedings of Wireless Communications and Net- working Conference (WCNC07), March 2007. 6) Gang Zhou, Chengdu Huang, Ting Yan, Tian He, John A. Stankovic, and Tarek F. Abdelzaher, MMSN: Multi-Frequency Media Access Control for Wireless Sensor Networks, in Proceedings of IEEE INFOCOM06, 2006. Manjunath D ################################################################################################################ *************************************************************************************************************** On Mon, 13 Dec 2010, luis_size wrote: > Hi all, I'm working on an application which streams Gyro and Acc sensors data at high rates. My network is formed by 5 shimmer (equivalent to TelosB) units streaming data to a base station over 802.15.4 radio. It's clear data interference between this 5 units is big since they are streaming at high rate and they are located in the same area. How can I optimise communication and reduced drooped packets rate ? I know that IEEE 802.15.4 defines 16 channels, is it possible to use a different channel for each shimmer unit to avoid interference between sensor nodes ? I would appreciate any documentation or paper about this issue. Thanks in advance, Best regards. Luis Size. _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
