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| n |
Idea:
switch the transceiver off if not needed
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| n |
States
of a station: sleep and awake
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| n |
Timing
Synchronization Function (TSF)
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– |
stations
wake up at the same time
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| n |
Infrastructure
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– |
Traffic
Indication Map (TIM)
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n |
list
of unicast receivers transmitted by AP
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– |
Delivery
Traffic Indication Map (DTIM)
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n |
list
of broadcast/multicast receivers transmitted by AP
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| n |
Ad-hoc
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– |
Ad-hoc
Traffic Indication Map (ATIM)
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n |
announcement
of receivers by stations buffering frames
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n |
more
complicated - no central AP
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n |
collision
of ATIMs possible (scalability?)
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