Mobile radio telecommunications system with improved hard handover
OwnerMauro Costa, Michael Roberts +1inventors
InventorsMauro Costa, Michael Roberts, Sutha Sivagnanasundaram
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Abstract
In the UMTS, handover of a mobile from a serving RNC 52 to a target RNC 54 is achieved by the TRNC 54 sending a handover command signal directly to the SRNC 52 through a Iur link 50. The link may be pre-existing or the TRNC may send a request and a protocol to set up such a link. The core network is no longer involved in handover, and a considerable time saving is achieved.
Claims10
In a mobile radio telecommunications system, a method of handing over control of a mobile system (60) from a serving controller (52) to a target controller (54) in which the target controller (54) sends a handover command signal to the mobile system (60) through the serving controller (52), characterized in that the handover command signal is sent directly from the target controller to the serving controller without passage through a core network (62).
A method according to any preceding claim applied in the Universal Mobile Telephone System.
A controller (54) for a mobile telecommunications system which, on taking control of a mobile system (60) is characterised by being arranged to send a handover command signal to said mobile system directly through a serving controller (52) without passage through a core network.
Dependencies are inferred from the claim text.