CDMA核心网向LTE演进分析

再出发

翻翻3GPP2的协议：
HRPD Serving Gateway

X.S0057-A v2.0_20121018
4.1 General HSGW Capabilities
The HSGW is the entity that terminates the eHRPD access network interface from the eAN/ePCF (i.e., A10/A11 interfaces). The functions of the eHRPD eAN/ePCF are specified in A.S0022 [4]. The HSGW routes UE originated or UE terminated packet data traffic. 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 specified in TS 23.402 [23]. This includes support for mobility, policy control and charging (PCC), access authentication, and roaming. The HSGW supports inter-HSGW handoff as well, using S2a (PMIPv6). The HSGW may also support inter-HSGW handoff with context transfer. The HSGW may use inter-HSGW handoff without context transfer.