Enhancement in Coexistence Capability via Virtual Channel Management for IEEE 802.15.4 LR-WPANs 


Vol. 31,  No. 5, pp. 519-533, May  2006


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  Abstract

The number of channels specified in IEEE 802.15.4 Low-Rate Wireless Personal Area Networks(LRWPANs) is too few to operate many applications of WPANs in the same area. To overcome this limit, we introduce Virtual Channel, a novel concept to increase the number of available channels when various WPAN applications coexist. Basically, a virtual channel is a newly-created channel via superframe scheduling within the inactive period of a logical channel preoccupied by other WPANs. To maximize the coexistence capability of WPANs using virtual channels, we propose Least Collision superframe scheduler(LC-scheduler), its less complex heuristics both for a given single channel, and Virtual Channel Selector(VCS) to efficiently manage multiple available logical channels. In addition, a simple but practical synchronization method is developed to compensate different time drifts among coexisting WPANs. The simulation results demonstrate that a remarkable improvement on the coexistence capability of the 802.15.4 can be achieved through the proposed schemes.

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  Cite this article

[IEEE Style]

T. H. Kim, J. Y. Ha, S. Choi, W. H. Kwon, "Enhancement in Coexistence Capability via Virtual Channel Management for IEEE 802.15.4 LR-WPANs," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 5, pp. 519-533, 2006. DOI: .

[ACM Style]

Tae Hyun Kim, Jae Yeol Ha, Sunghyun Choi, and Wooh Hyun Kwon. 2006. Enhancement in Coexistence Capability via Virtual Channel Management for IEEE 802.15.4 LR-WPANs. The Journal of Korean Institute of Communications and Information Sciences, 31, 5, (2006), 519-533. DOI: .

[KICS Style]

Tae Hyun Kim, Jae Yeol Ha, Sunghyun Choi, Wooh Hyun Kwon, "Enhancement in Coexistence Capability via Virtual Channel Management for IEEE 802.15.4 LR-WPANs," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 5, pp. 519-533, 5. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880