The HA provides control and mobility function for service continuity between 3GPP WLAN Interworking system and
3GPP Systems. The HA terminates the HGi reference point towards the PDN as defined in TS 23.327.
The HLR can be considered a subset of the HSS that holds the following functionality:
The functionality required to provide support to PS Domain entities such as the SGSN, MME and GGSN,
through the Gr, S6a, S6dand Gc interfaces and the 3GPP AAA Server for EPS in case of non-3GPP access via
SWx and for the I-WLAN through the D'/Gr' interface. It is needed to enable subscriber access to the PS Domain
The functionality required to provide support to CS Domain entities such as the MSC/MSC server and
GMSC/GMSC server, through the C and D interfaces. It is needed to enable subscriber access to the CS Domain
services and to support roaming to legacy GSM/UMTS CS Domain networks.
The HNS consists of a Home NodeB (HNB), a Home NodeB Gateway (HNB-GW) and
optionally a Local GW (L-GW). The Home NodeB Subsystem appears as an RNS to the core network and is connected
by means of the Iu-CS interface to the MSC and by means of the Iu-PS interface to the SGSN.
The H-PCRF is a functional element that encompasses policy and
charging control decision functionalities in the H-PLMN and in the VPLMN. The H-PCRF includes functionality for
both home routed access and visited access (local breakout).
The cdma2000® HRPD system is a wireless mobile system developed under the auspices of 3GPP2. The cdma2000®
HRPD system and its access network subsystem is compliant with 3GPP2 X.S0057 and 3GPP2 C.S0087,
which define the core network and air interface aspects, respectively.
The HSS is the master database for a given user. It is the entity containing the subscription-related information to support the network entities actually handling calls/sessions.
A Home Network may contain one or several HSSs: it depends on the number of mobile subscribers, on the capacity of
the equipment and on the organisation of the network.
As an example, the HSS provides support to the call control servers in order to complete the routing/roaming
procedures by solving authentication, authorisation, naming/addressing resolution, location dependencies, etc.
The HSS is responsible for holding the following user related information:
User Identification, Numbering and addressing information;
User Security information: Network access control information for authentication and authorization;
User Location information at inter-system level: the HSS supports the user registration, and stores inter-system
location information, etc.;
User profile information.
The HSS also generates User Security information for mutual authentication, communication integrity check and
Based on this information, the HSS also is responsible to support the call control and session management entities of different Domains and Subsystems.
The organisation of the subscriber data is outlined in
It also indicates which numbers, addresses and identifiers specified in
TS 23.003 are stored in HSS.