Date Added: Apr 2012
The IEEE 802.15.4 standard is specifically devised to support low power, low data rate in relation to Wireless Body Area Network (WBAN). A WBAN provides long-term health monitoring of a patient without any constraint on his/her normal daily life activities. This monitoring requires the low-power operation medical sensor body area networks. So, this paper proposes an improved back off algorithm in slotted CSMA/CA, to dynamically change the minimum contention window each time CSMA/CA begins, according to the network load conditions.