Cisco Cisco Packet Data Gateway (PDG)
• Sends Full/Partial RESET messages with the list of UEs associate to the MME and forwards to the
corresponding HeNBs.
Full/Partial Reset messages generated towards MME
• If one of the HeNB association goes down, deletes all the UEs corresponding to HeNB.
• Sends Partial RESET messages with the list of UEs corresponding to the HeNB and forwards to the
associated MMEs.
X2 Proxy Gateway support
As part of E-UTRAN architecture a X2 Gateways are deployed to allow the indirect X2-C interface between
(H)eNBS
(H)eNBS
The X2 GW hosts the following functions:
• Routing the X2AP X2 MESSAGE TRANSFER message to target eNB or HeNB based on the routing
information received in the X2AP X2 MESSAGE TRANSFER message.
• Informing the relevant (H)eNBs upon detecting that the signalling (i.e. SCTP) connection to a (H)eNB
is unavailable. The relevant (H)eNBs are the ones which had an "X2AP association" with this (H)eNB
via the X2 GW when the signalling connection became unavailable.
via the X2 GW when the signalling connection became unavailable.
• Mapping the TNL address(es) of a (H)eNB to its corresponding Global (H)eNB ID and maintaining the
association.
X2GW is implemented to support aggregation of both only X2-C interface.
Note
HeNB-GW Administration Guide, StarOS Release 19
28
HeNB Gateway in Wireless LTE Network
X2 Proxy Gateway support