Product Description - Cisco ASR 5000 Series Administration Manual

Hrpd serving gateway

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HRPD Serving Gateway Overview

Product Description

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:

Mobility anchoring for inter-eAN handoffs

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

Uplink and downlink charging per UE, PDN, and QCI

Downlink bearer binding based on policy information

Uplink bearer binding verification with packet dropping of UL traffic that does not comply with established

uplink policy

MAG functions for S2a mobility (i.e., Network-based mobility based on PMIPv6)

Support for IPv4 and IPv6 address assignment

EAP Authenticator function

Policy enforcement functions defined for the Gxa interface

Robust Header Compression (RoHC)

Support for VSNCP and VSNP with UE

Support for packet-based or HDLC-like framing on auxiliary connections

IPv6 SLACC support, generating RAs responding to RSs

An HSGW also establishes, maintains and terminates link layer sessions to UEs. The HSGW functionality provides

interworking of the UE with the 3GPP EPS architecture and protocols. This includes support for mobility, policy control

and charging (PCC), access authentication, and roaming. The HSGW also manages inter-HSGW handoffs.

OL-22984-01

Cisco ASR 5000 Series HRPD Serving Gateway Administration Guide ▄

Product Description ▀

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