Cisco ASR 5000 Series, Обзор продукта

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HRPD Serving Gateway Overview
▀ eHRPD Network Summary
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
eHRPD Network Summary
In a High Rate Packet Data (HRPD) network, the method of mobility is performed using client-based mobile IPv6 or
Client Mobile IPv6 (CMIPv6). This involves the mobile node with an IPv6 stack maintaining a binding between its
home address and its care-of address. The mobile node must also send mobility management signaling messages to a
home agent.
The primary difference in an evolved HRPD (eHRPD) network is the use of network mobility (via proxy) allowing the
network to perform mobility management, instead of the mobile node. This form of mobility is known as Proxy Mobile
IPv6 (PMIPv6).
The eHRPD network‘s main function is to provide interworking of the mobile node with the Evolved Packet System
(EPS). The EPS is a 3GPP Enhanced UMTS Terrestrial Radio Access Network/Evolved Packet Core (E-UTRAN/EPC).
The E-UTRAN/EPC is the core data network of the 4G System Architecture Evolution (SAE) network supporting the
Long Term Evolution Radio Access Network (LTE RAN).
The following figure shows the physical relationship of the eHRPD network with the E-UTRAN/EPC.
Internet
Enterprise
eAN/ePCF
S-GW
eHRPD
eNodeB
MME
P-GW
PCRF
3GPP AAA
HSS
E-UTRAN
EPC
HSGW
The primary functions of the eHRPD network are:
Connectivity to LTE core (EPC)