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    Showing posts with label LTE Bearers. Show all posts

    LTE SAE EPS BEARERS

    Jitendra Kumar
    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)

    lte-EPS-BEARERS
    PDN AND APPLICATIONS:

    lte-pdn-information

    ·     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
    lte-eps-bearer-quality-of-service-parameters
    • EPS BEARER PROPERTIES
      • DEFAULT AND DEDICATED BEARER
    difference-between-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.

    qci-in-4g

    ·         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.