QoS GPON Configuration:
GPON treats QoS explicitly
constant length frames facilitate QoS for time-sensitive applications
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5 types of Transmission CONTainers
- type 1 – fixed BW
- type 2 – assured BW
- type 3 – allocated BW + non-assured BW
- type 4 – best effort
- type 5 – superset of all of the above
GEM adds several PON-layer QoS features
- fragmentation enables pre-emption of large low-priority frames
- PLI – explicit packet length can be used by queuing algorithms
- PTI bits carry congestion indications
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