Thomas Kunz
Systems and Computer Engineering
5
Energy Model
nRe-implement energy model to correspond to published measurements of actual IEEE 802.11 interface:
ØConsumed energy per packet = m * (packet size) + b
Øm and b are empirical constants that are based on whether the packet is being sent, received, promiscuously handled or discarded. They also depend on the operation type (unicast vs. broadcast).
nIdle power: 0.8 Watts
97.2
-0.49
Discard
136
0.388
Receive Promiscuous
56
0.50
Receive Broadcast
250
1.9
SendBroadcast
330
0.42
Receive
420
1.9
Send
B (µJoule)
M (µJoule/byte)