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Contents ▀
SGSN Administration Guide, StarOS Release 18 ▄
NRI-FQDN based DNS resolution for non-local RAIs (2G subscribers) ............................................ 67
NRI Handling Enhancement ............................................................................................................... 67
NRPCA - 3G ....................................................................................................................................... 67
NRSPCA Support for S4-SGSN ......................................................................................................... 67
Operator Policy ................................................................................................................................... 68
Some Features Managed by Operator Policies ............................................................................. 68
Overcharging Protection .................................................................................................................... 68
QoS Traffic Policing per Subscriber ................................................................................................... 68
QoS Classes .................................................................................................................................. 69
QoS Negotiation ............................................................................................................................. 69
DSCP Marking ............................................................................................................................... 69
Traffic Policing ............................................................................................................................... 69
VPC-DI platform support for SGSN .................................................................................................... 70
Reordering of SNDCP N-PDU Segments .......................................................................................... 70
RAN Information Management (RIM) ................................................................................................. 70
S4 Support on the SGSN ................................................................................................................... 71
S3 and S4 Interface Support ......................................................................................................... 72
S4-SGSN Support for .................................................................................................................... 73
S6d and Gr Interface Support ........................................................................................................ 73
Configurable Pacing of PDP Deactivations on the S4-SGSN ....................................................... 74
DNS SNAPTR Support .................................................................................................................. 74
S4-SGSN Statistics Support .......................................................................................................... 74
S13’ Interface Support ................................................................................................................... 75
Idle Mode Signaling Reduction ...................................................................................................... 75
ISR with Circuit Switched Fallback ................................................................................................ 75
ISD / DSD Message Handling and HSS Initiated Bearer Modification .......................................... 76
UMTS-GSM AKA Support on the S4-SGSN.................................................................................. 77
3G and 2G SGSN Routing Area Update ....................................................................................... 77
IPv4 and IPv6 PDP Type Override ................................................................................................ 78
NAPTR-based Dynamic HSS Discovery ....................................................................................... 78
P-GW Initiated PDP Bearer Deactivation ...................................................................................... 79
S-GW and P-GW Tunnel and EPS Subscription Recovery ........................................................... 79
Local Configuration of S-GW and S4-SGSN per RAI .................................................................... 79
Configurable GUTI to RAI Conversion Mapping ............................................................................ 79
S4-SGSN Support for Fallback to V1 Cause Code in GTPv2 Context Response ........................ 80
S4-SGSN Support for Mobility Management Procedures ............................................................. 80
QoS Mapping Support ................................................................................................................... 80
MS Initiated Primary and Secondary Activation............................................................................. 81
Deactivation Procedure Support .................................................................................................... 81
MS, PGW and HSS Initiated PDP Modification Procedure Support .............................................. 81
Fallback from the S4 Interface to the Gn Interface ........................................................................ 82
Operator Policy Selection of S4 or Gn Interface ............................................................................ 83
IDFT Support During Connected Mode Handovers ....................................................................... 83
Disassociated DSR Support .......................................................................................................... 83
SGSN Serving Radio Network Subsystem (SRNS) Relocation Support ....................................... 84
E-UTRAN Service Handover Support ............................................................................................ 84
Support for Gn Handoff from S4-SGSN to 2G/3G Gn SGSN ........................................................ 85
Suspend/Resume Support on the S4-SGSN ................................................................................. 85
Flex Pooling (Iu / Gb over S16) Support on the S4-SGSN ............................................................ 86
LORC Subscriber Overcharging Protection on S4-SGSN ............................................................. 86
Summary of Functional Differences between an S4-SGSN and an SGSN (Gn/Gp)..................... 86
Session Recovery .............................................................................................................................. 92
SGSN Pooling and Iu-Flex / Gb-Flex ................................................................................................. 93
Gb/Iu Flex Offloading ..................................................................................................................... 93
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