Woongsoo Na   Jeongseok Yu   The IEEE 802.15 task group 5 has recently released the IEEE 802.15.5 standard. The standard provides an architectural framework enabling WPAN devices to promote interoperable and stable wireless mesh topologies. Although the applications enable the IEEE 802.15.5 to utilize a fully distributed MAC without any central coordinator. Logical groups are formed around each device to facilitate contention-free exchanges while exploring medium reuse over different spatial regions. The membership of devices to these groups can vary in time due to changes of locations or the topology. The distributed MAC mechanism ensures a high performance and efficient relaying of a MAC frame from a source to a destination in the network, possibly over several multihop relay devices, forming wireless personal area mesh networks (WPAMNs). Although the applications enabled by WPAMNs are very attractive, there are many technical challenges to overcome in order to build well-functioning robust system. Cognitive Radio ±â¹Ý ¹«¼± ¸Þ½¬ ¶ó¿ìÆà ¾Ë°í¸®Áò (A Cognitive Radio based Mesh Routing Algorithm), KRF, 2007.08~2009.07 [Progress Report] [Final Report] A Research on The Efficient Mesh Routing Algorithm in Wireless Sensor Networks (WSNs), ETRI, 2006.09~2007.01 [Progress Report] [Final Report] W. Na, G. Lee, H. Bae, J. Yu, and S. Cho, " Reliable Broadcast Scheme for IEEE 802.15.5 Low-Rate WPAN Mesh Networks," IEICE Transactions on Communications, vol. E95-B, no. 09, pp. 2700-2707, September 2012. [PDF] M. Lee, L. Zhang, J. Zheng, G. Ahn, C. Zhu, T. Park, S. Cho, C. Shin, and J. Ryu, "IEEE 802.15.5 WPAN Mesh Standard-Low Rate Part: Meshing the Wireless Sensor Networks," IEEE Journal on Selected Areas in Communications, vol. 28, no. 7, pp.973-983, September 2010. [PDF] I. Lee, S. Cho, W. Choi, S. Kwon, L. Park, and B.-S. Kim, "A Timer-based Reliable Broadcasting Scheme for LR-WPAN Mesh MAC," passed forIEEE P802.15.5 standardization, March 2007. (Doc#: IEEE 802.15-15-07-0614-00-0005) I. Lee, S. Cho, B.-S. Kim, and C.-S. Pyo"A Timer-based Reliable Broadcasting for WPAN Mesh Networks," passed lower hurdle to be considered in IEEE P802.15.5 standardization, November 2006. (Doc#: IEEE 802.15-15-06-0479-00-0005, IEEE 802.15-15-06-0480-00-0005) W. Choi, S. Cho, J.-Y. Lee, H.-S. Lee, and J.-W. Cho, "Mesh Routing Schemes in Wireless Sensor Networks," in Proc. of ICMOCCA, Tashkent, Uzbekistan, September 2007. [PDF]