METHOD, APPARATUS AND SYSTEM FOR HOME AGENT OBTAINING MOBILE NODE-HOME AGENT KEY IN PROXY MOBILE INTERNET PROTOCOL

摘要

Disclosed in the present invention are a method, device and system for an HA in PMIP to acquire an MN-HA key. The method comprises: the HA receiving an MIP registration request (MIP RRQ) message from a foreign agent (FA); sending a first authentication request message to an authentication authorization and accounting (AAA) server to which to an MS belongs, wherein a user password carried in the first authentication request message is an HA-AAA key between the HA and the AAA server; the HA receiving a first authentication response message which carries an MN-HA key returned by the AAA server, wherein the first authentication response message is returned by the AAA server authenticating the HA-AAA key carried in the first authentication request message by using a locally configured HA-AAA key and after the authentication has passed; and acquiring the MN-HA key from the first authentication response message. The present invention lays foundation for the successful establishment of MIP sessions.