ng-voice HSS
HSS (Home Subscriber Server)
ng-voice provides a software solution for the Home Subscriber Server (HSS), Home Location Register (HLR), Authentication Centre (AuC), and Equipment Identity Register (EIR) functionalities. ng-voice's subscriber database solution supports 3G, 4G, and 5G technologies and VoLTE, VoNR, and VoWiFi services.The HSS is the System Architecture Evolution (SAE)'s central database in LTE networks where important subscriber information is stored. GSM networks have a Home Location Register (HLR) and Authentication Centre (AuC). The equivalent of this in LTE networks is the HSS. The MME/SGSN communicates with the HSS over the S6a/S6d Diameter interface for authentication, location, and service information about the subscriber.Besides LTE, the HSS is also a functional element of IMS/VoLTE. The HSS database supports the IMS network entities that handle calls/sessions. It contains user profiles, performs authentication and authorization of the user, and can provide their location information. From an IMS perspective, the components communicating with the HSS are the Application Servers (AS) and Call State Control Function servers (CSCFs). Upon being queried by the Interrogating-CSCF (I-CSCF) when SIP registration is performed, the HSS retrieves the Serving-CSCF (S-CSCF) address and assigns it to a user. The user's information and profile data are then downloaded from the backend database and stored by the HSS, where the data can be accessed. After successful authentication on the same interface, the S-CSCF downloads the subscriber's profile over the Cx Diameter interface. The profile contains the Initial Filter Criteria providing the logic to the IMS for triggering SIP messages to the appropriate Application Servers. Application Servers (AS) access the HSS over the Sh diameter interface. Besides public identifiers, IMS user identities, and location information, the HSS also stores repository data related to a service (e.g., Supplementary Service data).Furthermore, the Authentication, Authorization, and Accounting (AAA) function communicates with the HSS over the SWx interface to support non-3GPP access to the network for VoWiFi service. ng-voice's subscriber database solution also provides Authentication Centre (AuC) and Equipment Identity Register (EIR) functionalities. The AuC provides authentication parameters (e.g., authentication vectors) for the authentication process. The EIR provides blacklisting/whitelisting functionalities over the S13 interface.
Main Features of ng-voice’s subscriber database solution:
Supported interfaces include:
- S6a and S6d interfaces provide procedures for attaching the device to 3G and 4G packet networks.
- Cx and Sh interfaces provide procedures for accessing IMS services.
- SWx interface providing procedures for VoWiFi access.
- Zh interface provides authentication procedures for Supplementary Service configuration.
- The S6c interface provides procedures for SMS operations with the HSS.
- 5G interfaces including Nhss, NU1, NU2, N70 and N71.
- SS7 MAP interfaces, including MAP C and MAP D, through an additional interworking function, translating S6d to MAP
Authentication procedures included EPS AKA, IMS AKA, and 5G AKA.
Provisioning through REST-based APIs.
User Management through GUI
Robust and geo-redundant backend database
The HSS is compliant to 3GPP release 17. Applicable standards include 3GPP TS 29.228, 3GPP TS 29.229, TS 24.229, TS 29.328 and TS 29.329.
Supported interfaces include:
- S6a and S6d interfaces, which provide procedures for attaching the device to 3G and 4G packet networks
- Cx and Sh interfaces, which provide procedures for accessing IMS services
- SWx interface, which provides procedures for VoWiFi access
- Zh interface, which provides authentication procedures for Supplementary Service configuration
- S6c interface, which provides procedures for SMS operations with the HSS
- 5G interfaces, including Nhss, NU1, NU2, N70, and N71
- SS7 MAP interfaces, including MAP C and MAP D, through an additional interworking function translating S6d to MAP
- EPS AKA, IMS AKA, and 5G AKA authentication procedures
- Provisioning through REST-based APIs
- User Management through GUI
- Robust and geo-redundant backend database.
The HSS is compliant with 3GPP release 17. Applicable standards include 3GPP TS 29.228, 3GPP TS 29.229, TS 24.229, TS 29.328, and TS 29.329.