Cisco Cisco Packet Data Gateway (PDG) Documentation Roadmaps
PDN Gateway Overview
▀ eHRPD Network Summary
▄ Cisco ASR 5000 Series Product Overview
OL-22937-01
eHRPD Network Summary
In a High Rate Packet Data (HRPD) network, 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.
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).
network to perform mobility management, instead of the mobile node. This form of mobility is known as Proxy Mobile
IPv6 (PMIPv6).
One of the eHRPD network‘s functions is to provide interworking of the mobile node with the 3GPP Evolved Packet
Core (EPC). The EPC is a high-bandwidth, low-latency packet network also know as System Architecture Evolution
(SAE), supporting the Long Term Evolution Radio Access Network (LTE RAN). The following figure shows the
relationship of the eHRPD network with the EPC.
Core (EPC). The EPC is a high-bandwidth, low-latency packet network also know as System Architecture Evolution
(SAE), supporting the Long Term Evolution Radio Access Network (LTE RAN). The following figure shows the
relationship of the eHRPD network with the EPC.