Patent ID: 8792505

Claim:
A method for providing Law Enforcement Agencies in a telecommunications network with interception or retention data related to a target mobile node comprising: connecting said target mobile node to said telecommunications network using a Mobile Access Gateway in a Proxy Mobile Internet Protocol domain; configuring at least one of said Mobile Access Gateway and a Local Mobility Anchor in said Proxy Mobile Internet Protocol domain to operate as Intercepting Control Elements and; providing Intercept Related Information by said at least one of said Mobile Access Gateway and said Local Mobility Anchor to a Delivery Function through an X 2 interface each time a Proxy Mobile Internet Protocol based event is detected in said at least one of said Mobile Access Gateway and said Local Mobility Anchor, respectively, wherein said Proxy Mobile Internet Protocol based event includes at least one of the following events: Router Solicitation, Router Advertisement, Proxy Binding Update, Proxy Binding Accept, Deregistration Proxy Binding Update.