Handover control system, method for the same, and mobile communication system and radio base station using the same
OwnerHiroya Akitainventor
Life of this patent
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Abstract
A handover control system in a mobile communication system includes; a first handover processing unit for controlling forwarding of user data from a source radio base station to a target radio base station in handover processing caused by movement of a mobile communication terminal; a second handover processing unit for controlling transmission of the user data from an upper layer node to both the source radio base station and the target radio base station in the handover processing; and a control unit for selecting activating either the first handover processing means or the second handover processing means according to a preliminarily requested communication quality for the user data.
Claims24
A handover control system in a motile communication system, comprising:
- a first handover processing unit for controlling forwarding of user data from a source radio base station to a target radio base station in handover processing caused by movement of a mobile communication terminal;
- a second handover processing unit for controlling transmission of the user data from an upper layer node to both the source radio base station and the target radio base station in the handover processing;
- and
- a control unit for selecting activating either the first handover processing means or the second handover processing means according to a preliminarily requested communication quality for the user data.
A handover control method in a mobile communication system, comprising:
- selectively activating either a first handover procedure or a second handover procedure according to a preliminarily requested communication quality for user data,
- wherein the first handover procedure is a step of forwarding the user data from a source radio base station to a target radio base station in a handover processing caused by movement of a mobile station, and the second handover procedure is a step of transmitting the user data from an upper layer node to both the source radio base station and the target radio base station in the handover processing.
A source radio base station performing handover control involved in movement of a mobile communication terminal in a mobile communication system, comprising:
- a first handover processing unit for controlling forwarding of user data to a target radio base station in handover processing of the mobile communication terminal;
- a second handover processing unit for instructing an upper layer node to transmit the user data to both the source radio base station and the target radio base station in the handover processing;
- and
- a selection control unit for selectively activating either the first handover processing unit or the second handover processing unit depending on a preliminarily requested communication quality for the user data.
A handover control system in a mobile communication system, comprising:
- first handover processing means for controlling forwarding of user data from a source radio base station to a target radio base station in handover processing caused by movement of a mobile communication terminal;
- second handover processing means for controlling transmission of the user data from an upper layer node to both the source radio base station and the target radio base station in the handover processing;
- and
- control means for selecting activating either the first handover processing means or the second handover processing means according to a preliminarily requested communication quality for the user data.
A source radio base station performing handover control involved in movement of a mobile communication terminal in a mobile communication system, comprising:
- first handover processing means for controlling forwarding of user data to a target radio base station in handover processing of the mobile communication terminal;
- second handover processing means for instructing an upper layer node to transmit the user data to both the source radio base station and the target radio base station in the handover processing;
- and
- selection control means for selectively activating either the first handover processing means or the second handover processing means depending on a preliminarily requested communication quality for toe user data.
Dependencies are inferred from the claim text.