Improving the Packet Delivery Performance for Concurrent Packet Transmissions in WSNs

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 diffe...

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Veröffentlicht in:	IEEE communications letters 2014-01, Vol.18 (1), p.58-61
Hauptverfasser:	Jongjun Park, Jongsoo Jeong, Hoon Jeong, Liang, Chieh-Jan Mike, JeongGil Ko
Format:	Artikel
Sprache:	eng
Schlagworte:	and forward error correction Applied sciences Codes Coding, codes Concurrent transmissions Convolutional codes Crystal oscillators Crystals Error correction & detection Exact sciences and technology Forward error correction IEEE 802.15 Standards Information, signal and communications theory Oscillators Radio transmitters Services and terminals of telecommunications Signal and communications theory Switching and signalling Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Telemetry. Remote supervision. Telewarning. Remote control Transmission and modulation (techniques and equipments) Wireless sensor networks
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Beschreibung
Zusammenfassung:	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
ISSN:	1089-7798 1558-2558
DOI:	10.1109/LCOMM.2013.112013.131974