Method, system and interworking unit for combining the signalling link of the two different control planes in a distributed radio access network
OwnerVirpi Palkistoinventor
Life of this patent
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Abstract
A method, system and interworking unit for implementing a combined signalling link for CS and PS side signalling in lu′ interface. The invention provides an interworking unit between a base station and core network so as to facilitate the signalling of control planes to decrease excess signalling. The invention implements a combined signalling link for both lu′-CS Control Plane and lu′-PS Control plane signalling. In this context the distributed radio access network is based on IP (Internet Protocol).
Claims21
A method for implementing a control plane signalling in a radio access network connected to at least two Core Network domains, said method comprising the steps of:
- creating a first interface instance (lu-CS, lu-PS) including at least one signalling link for said control plane signalling between an interworking unit (IWU) and a core network (CN) related to one mobile station (UE);
- creating a common interface instance (lu′) including one signalling link between said interworking unit and a base station (nodeB+) for control plane signalling;
- and
- directing all control plane signalling related to different Core Network domains via said common interface instance (lu′).
A system for implementing a control plane signalling instance in a radio access network connected to at least two Core Network domains, said system comprising:
- a base station (nodeB+);
- a core network (CN);
- an interworking unit (IWU) for connecting said core network (CN) to said base station (nodeB+),
- wherein said interworking unit comprises:
- a first interface instance (lu-CS, lu-PS) comprising at least one
- signalling link for said control plane signalling between said interworking unit (IWU) and said core network (CN) related to one mobile station (UE);
- a common interface instance (lu′) including one signalling link between said interworking unit (IWU) and said base station (nodeB+) for control plane signalling,
- wherein all control plane signalling related to different Core Network domains is directed via said common interface instance (lu′).
An interworking unit for implementing a control plane signalling instance in a radio access network connected to at least two Core Network domains, wherein said interworking unit connects a core network (CN) to a base station (nodeB+), said interworking unit further comprising:
- a first interface instance (lu-CS, lu-PS) including at least one signalling link for said control plane signalling between an interworking unit and said core network (CN) related to one mobile station (UE);
- a common interface instance (lu′) including one signalling link between said interworking unit and said base station (nodeB+) for control plane signalling,
- wherein all control plane signalling related to different Core Network domains is directed via said common interface instance (lu′).
Dependencies are inferred from the claim text.