Cisco Cisco Packet Data Gateway (PDG)
HeNB Gateway in Wireless LTE Network
▀ Features and Functionality - Optional Enhanced Feature Software
▄ HeNB-GW Administration Guide, StarOS Release 17
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Features and Functionality - Optional Enhanced Feature
Software
This section describes the optional enhanced features and functions support with HeNB-GW service.
Important:
Some of the following features may require the purchase of an additional license to implement the
functionality with the HeNB-GW service.
This section describes following features:
Automatic Neighbor Relation (ANR) Support
Automatic Neighbor Relation (ANR) functionality is nothing but relieving the operator from the complexity of
manually managing Neighbor Relations (NRs). In LTE deployments, the manual management of NRs becomes even
more challenging, as in addition of defining intra LTE neighbor relations for eNodeBs, operator has to provision
neighboring 2G, 3G, CDMA2000 cells as well.
manually managing Neighbor Relations (NRs). In LTE deployments, the manual management of NRs becomes even
more challenging, as in addition of defining intra LTE neighbor relations for eNodeBs, operator has to provision
neighboring 2G, 3G, CDMA2000 cells as well.
The ANR function resides in the eNodeB and manages the conceptual Neighbor Relation Table (NRT). Located within
ANR, the Neighbor Detection Function (NDF) finds new neighbors and adds them to the NRT. ANR also contains the
Neighbor Removal Function (NRF) which removes outdated NRs. The NDF and the NRF functions are specific to the
implementation by operator.
ANR, the Neighbor Detection Function (NDF) finds new neighbors and adds them to the NRT. ANR also contains the
Neighbor Removal Function (NRF) which removes outdated NRs. The NDF and the NRF functions are specific to the
implementation by operator.
An existing Neighbor cell Relation (NR) from a source cell to a target cell means that eNodeB controlling the source
cell knows the ECGI/CGI and Physical Cell Identifier (PCI) of the target cell and has an entry in the NRT for the source
cell identifying the target cell.
cell knows the ECGI/CGI and Physical Cell Identifier (PCI) of the target cell and has an entry in the NRT for the source
cell identifying the target cell.
For each cell that the eNodeB has, the eNodeB keeps an NRT. For each NR, the NRT contains the Target Cell Identifier
(TCI), which identifies the target cell. For E-UTRAN, the TCI corresponds to the E-UTRAN Cell Global Identifier
(ECGI) and Physical Cell Identifier (PCI) of the target cell.
(TCI), which identifies the target cell. For E-UTRAN, the TCI corresponds to the E-UTRAN Cell Global Identifier
(ECGI) and Physical Cell Identifier (PCI) of the target cell.
The ANR function relies on cells broadcasting their identity on global level, ECGI and allows O&M to manage the
NRT
NRT
CSG-ID Based Paging Optimization Support
Due to the high volume and small-sized femtocell deployment, it is well-known that paging messages is a big burden for
the femtocell system.In order to optimize the paging procedure by the HeNB-GW, the HeNB-GW is made aware of the
CSGs supported by the connected HeNBs. This allows the HeNB-GW to identify the appropriate HeNBs supporting
certain CSGs. This is known through the S1-Setup request sent by HeNBs.
the femtocell system.In order to optimize the paging procedure by the HeNB-GW, the HeNB-GW is made aware of the
CSGs supported by the connected HeNBs. This allows the HeNB-GW to identify the appropriate HeNBs supporting
certain CSGs. This is known through the S1-Setup request sent by HeNBs.