| Overview
of SLP |
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| n | UAs: mediate
for users/applications |
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| v | Request Service
information (active) |
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| v | Listen to
service broadcasts from DAs (passive) |
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| n | SAs: represent
services |
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| v | Reply to
SrvRqsts (active) |
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| v | Broadcast
service information to DAs (passive) |
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| n | DAs:
intermediate centralized service brokers |
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| v | Cache service
information from SAs |
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| v | Satisfy UA
requests accordingly |
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