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Contents ▀

SGSN Administration Guide, StarOS Release 17 ▄

NRI-FQDN based DNS resolution for non-local RAIs (2G subscribers) ............................................ 65

NRI Handling Enhancement ............................................................................................................... 65

NRPCA - 3G ....................................................................................................................................... 65

NRSPCA Support for S4-SGSN ......................................................................................................... 65

Operator Policy ................................................................................................................................... 66

Some Features Managed by Operator Policies ............................................................................. 66

Overcharging Protection .................................................................................................................... 66

QoS Traffic Policing per Subscriber ................................................................................................... 66

QoS Classes .................................................................................................................................. 67

QoS Negotiation ............................................................................................................................. 67

DSCP Marking ............................................................................................................................... 67

Traffic Policing ............................................................................................................................... 67

Reordering of SNDCP N-PDU Segments .......................................................................................... 68

RAN Information Management (RIM) ................................................................................................. 68

S4 Support on the SGSN ................................................................................................................... 68

S3 and S4 Interface Support ......................................................................................................... 70

S4-SGSN Support for .................................................................................................................... 70

S6d and Gr Interface Support ........................................................................................................ 71

Configurable Pacing of PDP Deactivations on the S4-SGSN ....................................................... 71

DNS SNAPTR Support .................................................................................................................. 72

S4-SGSN Statistics Support .......................................................................................................... 72

S13’ Interface Support ................................................................................................................... 72

Idle Mode Signaling Reduction ...................................................................................................... 73

ISR with Circuit Switched Fallback ................................................................................................ 73

ISD / DSD Message Handling and HSS Initiated Bearer Modification .......................................... 74

UMTS-GSM AKA Support on the S4-SGSN.................................................................................. 74

3G and 2G SGSN Routing Area Update ....................................................................................... 75

IPv4 and IPv6 PDP Type Override ................................................................................................ 76

NAPTR-based Dynamic HSS Discovery ....................................................................................... 76

P-GW Initiated PDP Bearer Deactivation ...................................................................................... 76

S-GW and P-GW Tunnel and EPS Subscription Recovery ........................................................... 77

Local Configuration of S-GW and S4-SGSN per RAI .................................................................... 77

Configurable GUTI to RAI Conversion Mapping ............................................................................ 77

S4-SGSN Support for Fallback to V1 Cause Code in GTPv2 Context Response ........................ 77

S4-SGSN Support for Mobility Management Procedures ............................................................. 78

QoS Mapping Support ................................................................................................................... 78

MS Initiated Primary and Secondary Activation............................................................................. 78

Deactivation Procedure Support .................................................................................................... 79

MS, PGW and HSS Initiated PDP Modification Procedure Support .............................................. 79

Fallback from the S4 Interface to the Gn Interface ........................................................................ 80

Operator Policy Selection of S4 or Gn Interface ............................................................................ 80

IDFT Support During Connected Mode Handovers ....................................................................... 81

Disassociated DSR Support .......................................................................................................... 81

SGSN Serving Radio Network Subsystem (SRNS) Relocation Support ....................................... 82

E-UTRAN Service Handover Support ............................................................................................ 82

Support for Gn Handoff from S4-SGSN to 2G/3G Gn SGSN ........................................................ 83

Suspend/Resume Support on the S4-SGSN ................................................................................. 83

Flex Pooling (Iu / Gb over S16) Support on the S4-SGSN ............................................................ 83

LORC Subscriber Overcharging Protection on S4-SGSN ............................................................. 84

Summary of Functional Differences between an S4-SGSN and an SGSN (Gn/Gp)..................... 84

Session Recovery .............................................................................................................................. 90

SGSN Pooling and Iu-Flex / Gb-Flex ................................................................................................. 91

Gb/Iu Flex Offloading ..................................................................................................................... 91

SGSN Support for RAI Based Query ................................................................................................. 91