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.
This functional entity is a data base in charge of the management of mobile subscribers. A PLMN may contain one or
several HLRs; it depends on the number of mobile subscribers, on the capacity of the equipment and on the
organization of the network. All subscription data are stored there. The main information stored there concerns the
location of each MS in order to be able to route calls to the mobile subscribers managed by each HLR. All management
interventions occur on this data base. The HLRs have no direct control of MSCs.
The HLR can be considered a subset of the HSS.
See Subscriber Data in the HLR here.
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 HLR/HSS contains GPRS and EPS subscription data and routeing information. The HLR/HSS is accessible from
the Gn/Gp SGSN via the Gr interface, from the S4-SGSN via the S6d interface and from the GGSN via the Gc
interface. For roaming MSs, the HLR/HSS may be in a different PLMN than the current SGSN.