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| n |
How
to deal with collisions?
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voice
transfer: loss of small amounts of information not
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critical,
just drop it (but: QoS!)
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data
transfer: have to ensure that no data is lost
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n |
hopping
sequences within one cell orthogonal, so only
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interference
possible with transmissions in a neighbor cell
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n |
transmissions
from other cells low in power, typically treated
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as
noise and filtered out
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n |
channel
coding and interleaving of data ensure that receiver
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can
tolerate a certain number of burst errors. In GSM,
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interleaving
is done over 8 bursts, and approximately two of
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these
8 bursts can get wiped out and recovered at receiver
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