Cisco Cisco Packet Data Gateway (PDG)
HeNB Gateway in Wireless LTE Network
▀ Features and Functionality - Base Software
▄ HeNB-GW Administration Guide, StarOS Release 17
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DSCP Marking on S1-U Relay
Cisco supports the DSCP marking of S1-U traffic traversing the HeNB-GW. This functionality on HeNB-GW is
supported through command line interface (CLI). CLI configuration capability has been enabled for DSCP marking for
both Access and Network service.
supported through command line interface (CLI). CLI configuration capability has been enabled for DSCP marking for
both Access and Network service.
CLIs are used for the dscp marking configuration for IP packets sent out on the S1-U interface, from the HeNB-GW to
the Access/Network side. Default value used for dscp marking is the dscp value for the incoming packet.
the Access/Network side. Default value used for dscp marking is the dscp value for the incoming packet.
Important:
For more information on the supported CLIs for this feature, refer the CLI Reference Guide.
Fault Reporting Support
SNMP traps are used for faults and fault reporting in the system for network side S1-MME and S1-U interfaces. For
these traps on the network side, some other mechanism is required, as the SCTP/S1-MME associations do not generate
SNMP traps.
these traps on the network side, some other mechanism is required, as the SCTP/S1-MME associations do not generate
SNMP traps.
Location Reporting Support
Cisco HeNB-GW supports the location reporting feature for the subscribers/UE movements.
Location Reporting is the procedure by which the serving MME keeps in the track of the UE change in location within
the allowed tracking area list of the eNodeB.
the allowed tracking area list of the eNodeB.
With the HeNBGW deployed in the Femtocell LTE network, MME does not directly connect to HeNBs, and therefore
any location report message is forwarded by the HeNB-GW to and fro. When HeNB-GW receives location reporting
control messages, it forwards the same to the appropriate HeNB for location reporting procedure.
any location report message is forwarded by the HeNB-GW to and fro. When HeNB-GW receives location reporting
control messages, it forwards the same to the appropriate HeNB for location reporting procedure.
QoS Support
Cisco HeNB-GW along with the SeGW supports QoS handling based on the DSCP mapping configuration.
QoS support provides a foundation for contributing towards improved Quality of User Experience (QoE) by enabling
deterministic end-to-end forwarding and scheduling treatments for different services or classes of applications pursuant
to their requirements for committed bandwidth resources, jitter and delay. In this way, each application receives the
service treatment that users expect.
deterministic end-to-end forwarding and scheduling treatments for different services or classes of applications pursuant
to their requirements for committed bandwidth resources, jitter and delay. In this way, each application receives the
service treatment that users expect.
Redundancy Support
To support redundancy, the HeNB-GW tasks should be started based on the following guidelines:
HENBGW DEMUX - The HENBGW DEMUX task recovers and updates the relevant information regarding
HeNB/UE connections by querying all the session managers (SMGRs) in the system. This task should not be
started on a PSC in which SMGRs are started. Regardless of whether session recovery is enabled or not, the
HENBGW DEMUX task should always be started on the Demux PSC.
started on a PSC in which SMGRs are started. Regardless of whether session recovery is enabled or not, the
HENBGW DEMUX task should always be started on the Demux PSC.
Upon recovery, the IPsec tunnel being preserved, the HeNB re-connects and the UE is paged via network
initiated service request or transition to ECM ACTIVE state on the MME by sending uplink packets itself, but
only after the HeNB has successfully re-established its association with the HeNB-GW.
initiated service request or transition to ECM ACTIVE state on the MME by sending uplink packets itself, but
only after the HeNB has successfully re-established its association with the HeNB-GW.