Serving GPRS Support Node
E524221
The Serving GPRS Support Node (SGSN) is a core network component in 2G/3G mobile systems responsible for delivering data packets to and from mobile devices and managing their mobility and session states.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T5480737 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Serving GPRS Support Node Context triple: [Serving Gateway, evolvedFrom, Serving GPRS Support Node]
-
A.
GPRS Tunnelling Protocol User Plane
GPRS Tunnelling Protocol User Plane (GTP-U) is a mobile core network protocol used to carry user data traffic in encapsulated form between key nodes such as base stations, serving gateways, and packet gateways in 3G/4G networks.
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B.
Gateway Mobile Switching Centre
The Gateway Mobile Switching Centre (GMSC) is a key GSM network component that routes calls between mobile networks and external networks such as the public switched telephone network (PSTN).
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C.
GSM core network
The GSM core network is the central backbone of GSM mobile systems, handling key functions such as switching, mobility management, authentication, and interconnection with other networks.
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D.
GPRS
GPRS (General Packet Radio Service) is a mobile data standard that enables packet-switched internet and multimedia services over 2G and 3G cellular networks.
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E.
Evolved Packet Core
Evolved Packet Core is the 4G LTE mobile network architecture responsible for managing data connectivity, mobility, and services between user devices and external IP networks.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Serving GPRS Support Node Target entity description: The Serving GPRS Support Node (SGSN) is a core network component in 2G/3G mobile systems responsible for delivering data packets to and from mobile devices and managing their mobility and session states.
-
A.
GPRS Tunnelling Protocol User Plane
GPRS Tunnelling Protocol User Plane (GTP-U) is a mobile core network protocol used to carry user data traffic in encapsulated form between key nodes such as base stations, serving gateways, and packet gateways in 3G/4G networks.
-
B.
Gateway Mobile Switching Centre
The Gateway Mobile Switching Centre (GMSC) is a key GSM network component that routes calls between mobile networks and external networks such as the public switched telephone network (PSTN).
-
C.
GSM core network
The GSM core network is the central backbone of GSM mobile systems, handling key functions such as switching, mobility management, authentication, and interconnection with other networks.
-
D.
GPRS
GPRS (General Packet Radio Service) is a mobile data standard that enables packet-switched internet and multimedia services over 2G and 3G cellular networks.
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E.
Evolved Packet Core
Evolved Packet Core is the 4G LTE mobile network architecture responsible for managing data connectivity, mobility, and services between user devices and external IP networks.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
3GPP network element
ⓘ
Mobile core network node ⓘ |
| abbreviation |
SGSN
ⓘ
linked to:
Serving GPRS Support Node
|
| associatedWith | Quality of Service management for GPRS/UMTS data ⓘ |
| communicatesWith |
Authentication Center
ⓘ
linked to:
Authentication Centre (AuC)
Base Station Subsystem ⓘ
linked to:
BSC (Base Station Controller)
Charging Gateway Function ⓘ Equipment Identity Register ⓘ GGSN ⓘ
linked to:
OsmoGGSN
Gateway GPRS Support Node ⓘ
linked to:
OsmoGGSN
Home Location Register ⓘ Radio Network Controller ⓘ Visitor Location Register ⓘ |
| definedByStandard | 3GPP ⓘ |
| domain | Packet-switched domain ⓘ |
| interface |
Ga interface
ⓘ
Gb interface ⓘ Ge interface ⓘ Gn interface ⓘ Gp interface ⓘ Gr interface ⓘ Gs interface ⓘ Iu-PS interface ⓘ |
| layerRole | Control-plane node for packet-switched domain ⓘ |
| maintains |
Location information of mobile stations
ⓘ
PDP context state ⓘ Routing area information ⓘ |
| manages |
Location registration for packet services
ⓘ
Mobility of GPRS-attached users ⓘ PDP contexts ⓘ Roaming users in visited networks ⓘ |
| partOf |
2G mobile network architecture
ⓘ
3G mobile network architecture ⓘ GPRS core network ⓘ |
| performs |
Attach and detach procedures for GPRS
ⓘ
Ciphering control for user data ⓘ Inter-SGSN routing area update ⓘ Location update procedures ⓘ Tunneling of user data to GGSN ⓘ User authentication for packet services ⓘ |
| primaryFunction |
Charging data collection for packet services
ⓘ
Logical link management with mobile stations ⓘ Mobility management for packet-switched services ⓘ Packet data delivery to and from mobile stations ⓘ Paging for packet data services ⓘ Session management for packet-switched services ⓘ |
| replacedBy | Serving Gateway in LTE ⓘ |
| supports | Roaming across PLMNs for packet services ⓘ |
| usedIn |
GSM networks
ⓘ
linked to:
GSM
UMTS networks ⓘ
linked to:
UMTS
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Serving GPRS Support Node Description of subject: The Serving GPRS Support Node (SGSN) is a core network component in 2G/3G mobile systems responsible for delivering data packets to and from mobile devices and managing their mobility and session states.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node
3GPP TS 29.281
→
usedBetween
→
Serving GPRS Support Node (SGSN) and Gateway GPRS Support Node (GGSN)
ⓘ
linked to: Serving GPRS Support Node
linked to: Serving GPRS Support Node