The Wireless Mesh Network (WMN) is an emerging technology that has many potential applications with a huge consumer demand. There is a big demand to develop or choose among existing ones, suitable Medium Access Control (MAC) protocol which matches communication needs of WMN. The IEEE 802.15.3 MAC for Wireless Personal Area Network (WPAN) is a potential candidate for mesh networking over small distances. One approach to forming the WMN using IEEE 802.15.3 technology is to interconnect two or more piconets using bridge devices. Piconet interconnection through bridging techniques is an interesting approach, since it enables coverage of larger areas and accommodates larger number of devices. Bridge design in IEEE 802.15.3 involves concepts of parent and child piconets which basically partition the bandwidth between parent and child piconets on Time Division Multiple Access (TDMA) basic. A bridge device has to be a member in the parent piconet and coordinator in the child piconet. Due to the resemblance to the similar approach in Bluetooth technology we will refer to this approach as to Master-Slave(MS) bridge. The scheduling of channel time to the bridge device is a challenging task. We investigate the performance of master-slave bridge that interconnects two IEEE 802.15.3 piconets in a parent-child manner. We have designed an adaptive bandwidth allocation algorithm for bridge bandwidth allocation, and examined the impact of the value of the smoothing constant and threshold hysteresis on the throughput, blocking probability, bridging delay, and average queue size for the downlink queue at the bridge device.
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