Zigbee WSN

$(2)4=8$Marks$)$

The figure below is showing a two clusters and a sink of a wireless sensor network

$1-$ Identify the two cluster's node sets, the head of each cluster and the sink $($PAN coordinator$)$ Fad node is adoptung three states $[$ransmil $($ I $),$ Receive$($R$)$ and Sleep $($S$).$ The access in ead cluster is in IDMA mode between cluster head and end$-$devices. Show in a table of $9$ ume slots the stalus of each node in each.

$2-$ Determine the duty cycle of each node $($power saving rate$).$

$3-$ As each transmission is one time$-$slot duration, determine the latency of any end device data toreach the sink if only one super$-$frame is sent between F$-$E and D$-$E after collecting all end devices' frames.

$4-$ What is the power cost of each transmission from end device to sink$,$ ifthe transmission between a cluster head and the sink is having a cost of $3$ as indicated in the figure?

Please note that $\frac{x}{Y}$ means $x$ is latency and $Y$ is the power cost of the link.