Emergency access mechanism in IEEE 802.15.4 
for wireless body area sensor networks

doi:10.1016/S1005-8885(08)60284-8

Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (6): 24-31.doi: 10.1016/S1005-8885(08)60284-8

Emergency access mechanism in IEEE 802.15.4
for wireless body area sensor networks

郭艳艳，康桂霞，曹羽，张平

Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

收稿日期:2008-12-22 修回日期:1900-01-01 出版日期:2009-12-30
通讯作者: 郭艳艳

Emergency access mechanism in IEEE 802.15.4
for wireless body area sensor networks

GUO Yan-yan , KANG Gui-xia, CAO Yu, ZHANG Ping

Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2008-12-22 Revised:1900-01-01 Online:2009-12-30
Contact: GUO Yan-yan

摘要/Abstract

摘要：

IEEE 802.15.4 protocol has attracted much attention in research and industrial communities as candidate technology for wireless body area sensor networks (WBASNs). IEEE 802.15.4 supports the exclusive use of a wireless channel through guaranteed time slot (GTS). However, on one hand, bandwidth underutilization rate may be lower because of the variance between the guaranteed bandwidth and the arrival rate. On the other hand, the waiting time for transmitting emergency notification is getting longer when the GTSs assigned to the nodes increase in WBASNs. To solve these problems, in this article, a new scheme is proposed to reduce transmission delay for the alarm notification in emergent situations. Simulation results are presented to validate the efficiency of the proposed scheme by comparing it with the medium access control (MAC) protocol of IEEE 802.15.4.

关键词:

WBASN,;GTS,;IEEE;802.15.4,;emergency;mechanism

Abstract:

Key words:

WBASN;GTS;IEEE 802.15.4;emergency mechanism

GUO Yan-yan , KANG Gui-xia, CAO Yu, ZHANG Ping. Emergency access mechanism in IEEE 802.15.4
for wireless body area sensor networks[J]. Acta Metallurgica Sinica(English letters), 2009, 16(6): 24-31.

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Emergency access mechanism in IEEE 802.15.4
for wireless body area sensor networks

Emergency access mechanism in IEEE 802.15.4
for wireless body area sensor networks

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Emergency access mechanism in IEEE 802.15.4 for wireless body area sensor networks

Emergency access mechanism in IEEE 802.15.4 for wireless body area sensor networks

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Emergency access mechanism in IEEE 802.15.4
for wireless body area sensor networks

Emergency access mechanism in IEEE 802.15.4
for wireless body area sensor networks