39 lines
837 B
Markdown
39 lines
837 B
Markdown
# lec23
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Wifi stuff in this lecture... jk its cellular shit wew lad
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## Pieces
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* base station
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covers an area for users
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* users
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yea
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* air interface
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most(all) of this based on air to air connections
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## Dividing up signals
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Either we use _TDMA_ or _FDMA_ at the cell tower level.
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## Mobility
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Since we're dealing with dealing with literally moving targets now we have to consider a few new things, like handling how cell tower's deal with people connecting and disconnecting all the time.
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Moving from access point to access point we must somehow maintain connections.
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To route this kind of thing we have two options:
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1. Let routing handle it
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Just like previous lectures, send off some data and hope that the data gets to the right place
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2. End system offloading
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Let end systems deal with it via direct or indirect routing.
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