Radio resource control method in mobile communication system, mobile communication system and network element
First Claim
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1. A method, comprising:
- camping, in an idle state, on a serving cell formed by a serving base station;
adjusting, in a network element of a mobile communication system, at least one element of control information according to a predetermined time pattern comprising time elements having a characteristic profile in terms of a state of the mobile communication system, to form adjusted control information, wherein the control information controls cell change procedures of a user equipment camping in the idle state on the serving cell;
receiving, in the user equipment, the adjusted control information for controlling cell change procedures of the user equipment, said cell change being conducted from the serving cell to a target cell; and
performing, in the user equipment, the cell change procedures based on the received control information; and
controlling the cell change procedures based on said adjusted control information, wherein at least one neighbor cell is formed by a neighbor base station, and the user equipment is configured to receive signals from said serving base station and said neighbor base stations.
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Abstract
The invention relates to a radio resource control method, a mobile communications system and a network element implementing the method. According to the invention, the cell change procedures performed by the user equipment in an idle state are controlled dynamically with control information that is adjusted according to a predetermined time pattern. The invention enables for instance an advanced cell change in an idle state, thus reducing the probability of a handover while the user equipment is in a dedicated connection to the network.
46 Citations
42 Claims
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1. A method, comprising:
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camping, in an idle state, on a serving cell formed by a serving base station; adjusting, in a network element of a mobile communication system, at least one element of control information according to a predetermined time pattern comprising time elements having a characteristic profile in terms of a state of the mobile communication system, to form adjusted control information, wherein the control information controls cell change procedures of a user equipment camping in the idle state on the serving cell; receiving, in the user equipment, the adjusted control information for controlling cell change procedures of the user equipment, said cell change being conducted from the serving cell to a target cell; and performing, in the user equipment, the cell change procedures based on the received control information; and controlling the cell change procedures based on said adjusted control information, wherein at least one neighbor cell is formed by a neighbor base station, and the user equipment is configured to receive signals from said serving base station and said neighbor base stations.
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2. A system, comprising:
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a network part configured to provide the fixed infrastructure of the mobile communication system, the network part comprising a serving base station configured to form a serving cell, and a neighbour base station configured to form a neighbour cell; a user equipment comprising a receiver configured to receive signals from the serving base station and from the neighbour base station; the network part further comprises a controller configured to control cell change procedures with control information, said cell change being conducted from the serving cell to a target cell, the user equipment further comprising a cell changer configured to perform cell change procedures based on control information received from the network part, wherein the receiver and the cell changer are configured to camp on the serving cell in an idle state, and wherein the network part further comprises an adjuster configured to adjust at least one element of said control information according to a predetermined time pattern comprising time elements having a characteristic profile in terms of a state of the mobile communication system, to form adjusted control information. - View Dependent Claims (3, 4, 5)
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6. A network element of a mobile communication system, comprising a serving base station configured to form a serving cell, a neighbour base station configured to form a neighbour cell, and a user equipment camped on the serving cell in an idle state and comprising a receiver configured to receive signals from the serving base station and from the neighbor base station, the user equipment further comprising a cell changer configured to perform cell change procedures based on control information, and a controller configured to control cell change procedures with control information, said cell change being conducted from the serving cell to a target cell, the network element comprising:
an adjuster configured to adjust at least one element of said control information according to a predetermined time pattern comprising time elements having a characteristic profile in terms of a state of the mobile communication system, to form adjusted control information.
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7. A method, comprising:
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providing, in a network element of a mobile communication system, control information controlling cell change procedures of a user equipment camping in an idle state on a serving cell formed by a base station; adjusting at least one element of said control information according to a predetermined time pattern comprising time elements having a characteristic profile in terms of a state of the mobile communication system, to form adjusted control information; transmitting the adjusted control information to the user equipment; and controlling the cell change procedures based on the adjusted control information. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. An apparatus, comprising:
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a controller configured to provide control information controlling cell change procedures of a user equipment camping in an idle state on a serving cell formed by a base station; and an adjuster configured to adjust at least one element of said control information according to a predetermined time pattern comprising time elements having a characteristic profile in terms of a state of the mobile communication system, to form adjusted control information, wherein the controller is further configured to transmit the adjusted control information to the user equipment and control the cell change procedures based on the adjusted control information. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 41, 42)
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35. An apparatus, comprising:
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providing means for providing control information controlling cell change procedures of a user equipment camping in an idle state on a serving cell formed by a base station; adjusting means for adjusting at least one element of said control information according to a predetermined time pattern comprising time elements having a characteristic profile in terms of a state of the mobile communication system, to form adjusted control information; transmitting means for transmitting the adjusted control information to the user equipment; and controlling means for controlling the cell change procedures based on the adjusted control information. - View Dependent Claims (36, 37)
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38. A computer-readable program distribution medium encoding a computer program of instructions being configured to control a processor to perform:
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providing, in a network element of a mobile communication system, control information controlling cell change procedures of a user equipment camping in an idle state on a serving cell formed by a base station; adjusting at least one element of said control information according to a predetermined time pattern comprising time elements having a characteristic profile in terms of a state of the mobile communication system, to form adjusted control information; transmitting the adjusted control information to the user equipment; and controlling the cell change procedures based on the adjusted control information. - View Dependent Claims (39, 40)
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Specification