AbstractâIn this letter, we investigate the properties of packet collisions in IEEE 802.15.4-based wireless sensor net
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IEEE COMMUNICATIONS LETTERS, VOL. 18, NO. 1, JANUARY 2014
Improving the Packet Delivery Performance for Concurrent Packet Transmissions in WSNs Jongjun Park, Jongsoo Jeong, Hoon Jeong, Chieh-Jan Mike Liang, and JeongGil Ko
Abstract—In this letter, we investigate the properties of packet collisions in IEEE 802.15.4-based wireless sensor networks when packets with the same content are transmitted concurrently. While the nature of wireless transmissions allows the reception of a packet when the same packet is transmitted at different radios with (near) perfect time synchronization, we find that in practical systems, platform specific characteristics, such as the independence and error of the crystal oscillators, cause packets to collide disruptively when the two signals have similar transmission powers (i.e., differences of
