EPS
BEARERS
EPS
BEARERS:
· EPS
Bearer spans across LTE Network From UE to PGW
· Every
EPS Bearer created for a UE contains a ID for managing it across the network
· Every
EPS Bearer is associated with a Quality Of Service Class Identifier (QCI)
PDN
AND APPLICATIONS:
· Every UE May Contain Many EPS Bearers. Each EPS Bearer would contain a Different QoS Implementation!
· Every UE which is
‘Attached’ to an LTE Network Must
–
At
Least Be Connected To One ‘PDN’
– For Every PDN UE Is
Connected, It Must
o Have '1' Default Bearer
o '0' OR More
Dedicated Bearers
- EPS BEARER PROPERTIES
- DEFAULT AND DEDICATED BEARER
·
GBR(Guarantee
bit rate): Guarantee delivery of packets on high priority
·
NGBR(Non-GBR): No guaranteed delivery, priority can be late.
·
MBR(Maximum
Bit rate): MBR is always greater than GBR.
·
QCI(Quality
of Service class Identifier): Below Table for QCI.
·
ARP(Allocation
Retention Priority): Used to set priority to reduce the
congestion in the network.
·
AMBR(Aggregate
MBR): Total data rate applicable for mobile phones in the
particular PDN so AMBR is divided into multiple MBR.