Cisco Cisco Packet Data Gateway (PDG)
HeNB Gateway in Wireless LTE Network
▀ Product Description
▄ HeNB-GW Administration Guide, StarOS Release 18
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e-RAB management functions
Radio resource management functions
GTP-U tunnels management
Mobility management functions
Security functions
Service and Network access functions
Paging co-ordination functions
UE registration for HeNB
User-plane management functions including ciphering
Using Cisco variant 1 and 2, a HENB is directly connected only to 1 HENBGW. HeNB enforces the UL (uplink) bearer
level rate based on UE-AMBR and MBR via means of uplink scheduling; and does DL (downlink) bearer level rate
enforcement based on UE-AMBR (Aggregate Maximum Bit Rate).
level rate based on UE-AMBR and MBR via means of uplink scheduling; and does DL (downlink) bearer level rate
enforcement based on UE-AMBR (Aggregate Maximum Bit Rate).
Security Gateway (SeGW)
The Security Gateway is an logical function on HeNB-GW in the LTE femtocell network deployment, however it is
specified as a requirement in the Femtocell LTE network architecture. It may be implemented either as a separate
physical entity or co-located with an existing entity. The SeGW secures the communication from/to the HeNBs.
specified as a requirement in the Femtocell LTE network architecture. It may be implemented either as a separate
physical entity or co-located with an existing entity. The SeGW secures the communication from/to the HeNBs.
Basic function of this entity are:
Authentication of HeNBs
Termination of encrypted IPsec data connection from the femtocells
Providing access to HeMS and HeNB-GW
The SeGW holds capability of implementing a Denial of Service (DoS) shield to protect the EPC (S-GW and MME) by
detecting and then filtering out the attack traffic while maintaining the QoS (Quality of Service) of useful traffic. In our
implementation, it is an optional element which is situated on HeNB-GW.
detecting and then filtering out the attack traffic while maintaining the QoS (Quality of Service) of useful traffic. In our
implementation, it is an optional element which is situated on HeNB-GW.
HeNB Gateway (HeNB-GW)
The HeNB-GW provides the access to Femto user to LTE core network. It acts as an access gateway to HeNB and
concentrates connections from a large amount of HeNBs. HeNB-GW serves as a control plane (C-Plane) concentrator,
specifically the S1-MME interface.
concentrates connections from a large amount of HeNBs. HeNB-GW serves as a control plane (C-Plane) concentrator,
specifically the S1-MME interface.
The HeNB-GW may optionally terminate the user plane towards the HeNB and towards the S-GW, and may provide a
relay function for relaying User Plane data between the HeNB and the S-GW. The HeNB-GW supports NAS Node
Selection Function (NNSF).
relay function for relaying User Plane data between the HeNB and the S-GW. The HeNB-GW supports NAS Node
Selection Function (NNSF).
Important:
NAS Node Selection Function (NNSF) supports S1-Flex or multiple S1-MME
connections towards the EPC from any one HeNB.
HeNB Management System (HeMS)
It is a network element management system for HeNB access. Management interface between HeNB and HMS is based
on TR-069 family of standards. Femto access point extensions are based on standards as defined in TR-196.
on TR-069 family of standards. Femto access point extensions are based on standards as defined in TR-196.