Cisco Cisco Packet Data Gateway (PDG) Manual De Manutenção
New Feature Summary
Generally Available 06-30-2010
1-12
eHRPD Features in Release 9.0
This section contains information on new 9.0 features that pertain to the HRPD Serving
Gateway (HSGW) and the PDN Gateway (P-GW) supporting eHRPD network services.
Gateway (HSGW) and the PDN Gateway (P-GW) supporting eHRPD network services.
New HSGW Features
The HSGW is new in release 9.0.
The HSGW terminates the eHRPD access network interface from the Evolved Access
Network/Evolved Packet Core Function (eAN/ePCF) and routes UE-originated or
terminated packet data traffic. It provides interworking with the eAN/ePCF and the PDN
Gateway (P-GW) within the Evolved Packet Core (EPC) or LTE/SAE core network and
performs the following functions:
Network/Evolved Packet Core Function (eAN/ePCF) and routes UE-originated or
terminated packet data traffic. It provides interworking with the eAN/ePCF and the PDN
Gateway (P-GW) within the Evolved Packet Core (EPC) or LTE/SAE core network and
performs the following functions:
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Mobility anchoring for inter-eAN handoffs
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Transport level packet marking in the uplink and the downlink, e.g., setting the DiffServ
Code Point, based on the QCI of the associated EPS bearer
Code Point, based on the QCI of the associated EPS bearer
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Uplink and downlink charging per UE, PDN, and QCI
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Downlink bearer binding based on policy information
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Uplink bearer binding verification with packet dropping of UL traffic that does not
comply with established uplink policy
comply with established uplink policy
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MAG functions for S2a mobility (i.e., Network-based mobility based on PMIPv6)
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Support for IPv4 and IPv6 address assignment
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EAP Authenticator function
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Policy enforcement functions defined for the Gxa interface
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Robust Header Compression (RoHC)
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Support for VSNCP and VSNP with UE
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Support for packet-based or HDLC-like framing on auxiliary connections
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IPv6 SLACC support, generating RAs responding to RSs
New P-GW Features
The P-GW is new in Release 9.0.
The P-GW terminates the SGi interface towards the Packet Data Network (PDN). If a UE is
accessing multiple PDNs, there may be more than one P-GW for that UE. The P-GW
provides connectivity to the UE to external packet data networks by being the point of exit
and entry of traffic for the UE. A UE may have simultaneous connectivity with more than
one P-GW for accessing multiple PDNs. The P-GW performs policy enforcement, packet
filtering for each user, charging support, lawful interception and packet screening.
accessing multiple PDNs, there may be more than one P-GW for that UE. The P-GW
provides connectivity to the UE to external packet data networks by being the point of exit
and entry of traffic for the UE. A UE may have simultaneous connectivity with more than
one P-GW for accessing multiple PDNs. The P-GW performs policy enforcement, packet
filtering for each user, charging support, lawful interception and packet screening.
Another key role of the P-GW is to act as the anchor for mobility between 3GPP and
non-3GPP technologies such as WiMAX and 3GPP2 (CDMA 1X and EvDO).
non-3GPP technologies such as WiMAX and 3GPP2 (CDMA 1X and EvDO).