Radio communication system, radio terminal, radio station, and cell selection method
First Claim
1. A radio communication system comprising a radio station and a radio terminal,wherein the radio station comprises at least one processor configured to implement a control unit configured to control a plurality of types of cells by using one radio access technology, which is determined by a radio transmission method, and a memory coupled to the at least one processor;
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at least one processor, which is configured to;
implement a recognition unit with which the radio terminal recognizes a type of a serving cell and a type of a neighbor cell by recognizing at least a type of a downlink carrier of the corresponding cell, andimplement a cell selection unit with which the radio terminal selects a target cell in intra the radio access technology based on cell selection criteria, which are configured in accordance with at least either the recognized type of the serving cell or the recognized type of the neighbor cell, anda memory coupled to the at least one processor.
1 Assignment
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Accused Products
Abstract
The present invention is a radio communication system in which a radio station and a radio terminal communicate with each other. The radio communication system has a control means with which at least one of the radio stations controls a plurality of types of cells by using one radio access technology, a recognition means with which the radio terminal recognizes the types of the cells, and a cell selection means with which the radio terminal selects the cell based on cell selection criteria based on the types of the cells.
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Citations
19 Claims
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1. A radio communication system comprising a radio station and a radio terminal,
wherein the radio station comprises at least one processor configured to implement a control unit configured to control a plurality of types of cells by using one radio access technology, which is determined by a radio transmission method, and a memory coupled to the at least one processor; - and
wherein the radio terminal comprises; at least one processor, which is configured to; implement a recognition unit with which the radio terminal recognizes a type of a serving cell and a type of a neighbor cell by recognizing at least a type of a downlink carrier of the corresponding cell, and implement a cell selection unit with which the radio terminal selects a target cell in intra the radio access technology based on cell selection criteria, which are configured in accordance with at least either the recognized type of the serving cell or the recognized type of the neighbor cell, and a memory coupled to the at least one processor. - View Dependent Claims (2)
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3. A radio terminal for use in a radio communication system in which a radio station controls a plurality of types of cells by using one radio access technology, which is determined by a radio transmission method, comprising:
at least one processor and a memory coupled to the at least one processor, wherein the at least one processor is configured to; implement a recognition unit that recognizes a type of a serving cell and a type of a neighbor cell by recognizing at least a type of a downlink carrier of the corresponding cell, and implement a cell selection unit that selects a target cell in intra the radio access technology based on cell selection criteria, which are configured in accordance with at least either the recognized type of the serving cell or the recognized type of the neighbor cell. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11)
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12. A radio station comprising:
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at least one processor and a memory coupled to the at least one processor, wherein the at least one processor is configured to implement a control unit that controls a plurality of types of cells by using one radio access technology, which is determined by a radio transmission method, and a unit that broadcasts or individually transmits cell selection criteria in intra the radio access technology to be criteria when a radio terminal selects a target cell between a serving cell and a neighbor cell, a type of the serving cell and a type of the neighbor cell being recognized by the radio terminal by recognizing at least a type of a downlink carrier of the corresponding cell, wherein the cell selection criteria are configured in accordance with at least either the recognized type of a serving cell or the recognized type of a neighbor cell.
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13. A cell selection method comprising:
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causing at least one radio station to control a plurality of types of cells by using one radio access technology, which is determined by a radio transmission method; causing a radio terminal to recognize a type of a serving cell and a type of a neighbor cell by recognizing at least a type of a downlink carrier of the corresponding cell; and causing the radio terminal to select a target cell in intra the radio access technology based on cell selection criteria, which are configured in accordance with at least either the recognized type of the serving cell or the recognized type of the neighbor cell. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification