Patent ID: 8145197
Filing Date: 2012-03-27
Classification: H04L,H04M,H04W

Abstract:
1. A method of providing information to a client from a client access network, the information being in the form of user information regarding a plurality of users, the method comprising the following steps, as executed in the client access network: receiving a subscription request from the client for certain information on a set of users, wherein at least some of the users in the set are connected to other access networks; establishing a network subscription for user information updates with each of the other access networks to which users in the set are connected, in response to the received client subscription request; continuously receiving and storing information updates regarding users in the set from the other access networks whenever changes of state are detected for the users in the set; receiving a subsequent request from the client for user information regarding users in the set of users; retrieving stored user information corresponding to the requested information, wherein the user information was received from the other access networks according to the network subscriptions; and sending a notification to the client regarding the retrieved user information, in response to the subsequent user information request.