Telefonaktiebolaget Lm Ericsson (publ)

Catherine Mulligan

Magnus Norberg Olsson

Tomas Holm

Hans Nordin

A method of starting a third party application subscription in a set of Application Servers located within an IP Multimedia Subsystem network. The method comprises receiving a subscription start request at one of said Application Servers, the request including subscription data, starting the subscription data at that Application Server, and storing the subscription data as transparent data in a Home Subscriber Server, from that Application Server over the Sh interface.

Facilitating subscription services in the IMS

The disclosure relates to building a topology map that can be used to provide a requesting wireless terminal with information relevant to its current location. Information on neighboring cells of different access networks is maintained in the topology map. An inter-access network (IAN) topology apparatus builds to topology map based on results of previous IAN session transfers such as handovers from one access network to a different access network. When the requesting wireless terminal currently accessing a current network makes a request for topology information, the IAN topology apparatus provides a list of cells of other than the current access network in the area of the requesting wireless terminal. The requesting wireless terminal uses the information to scan for cells of other access networks to potentially perform the IAN session transfer. The requesting wireless terminal conserves power by scanning only for accessible cells indicated to be in its area.

Growing community of inventors

Stockholm, Sweden

Catherine Mulligan