Apparatus and method for supporting mobility of a mobile terminal that performs visible light communication
First Claim
1. A method for supporting, by a coordinator, mobility of a terminal that performs Visible Light Communication (VLC) with the coordinator, the method comprising:
- transmitting data to the terminal using at least one light source of a first cell among a plurality of cells;
determining whether a response signal is received from the terminal in the first cell;
searching for the terminal in a neighboring cell of the first cell, if the response signal is not received; and
determining the neighboring cell as a serving cell, if the terminal is located in the neighboring cell.
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Accused Products
Abstract
A method and apparatus for supporting mobility of a mobile terminal in a Visible Light Communication (VLC) system. The method includes searching, by the VLC device, for a first mobile terminal in a plurality of cells; locating the first mobile terminal in a first cell among the plurality of cells; exchanging data with the first mobile using a light source of the first cell; determining whether a response signal corresponding to data reception is received from the first mobile terminal in the first cell; searching for the first mobile terminal in a neighboring cell of the first cell, if the response signal is not received; and determining the neighboring cell as a second cell for visible light activation, if the first mobile terminal is located in the neighboring cell.
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Citations
41 Claims
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1. A method for supporting, by a coordinator, mobility of a terminal that performs Visible Light Communication (VLC) with the coordinator, the method comprising:
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transmitting data to the terminal using at least one light source of a first cell among a plurality of cells; determining whether a response signal is received from the terminal in the first cell; searching for the terminal in a neighboring cell of the first cell, if the response signal is not received; and determining the neighboring cell as a serving cell, if the terminal is located in the neighboring cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A coordinator for performing Visible Light Communication (VLC) with a terminal, the coordinator comprising:
a controller for controlling to transmit data to at least one light source of a first cell among the plurality of cells, determining whether a response signal is received from the terminal in the first cell, searching for the terminal in a neighboring cell of the first cell, if the response signal is not received, and determining the neighboring cell as a serving cell, if the terminal is located in the neighboring cell. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for supporting, by a coordinator, mobility of a terminal in a Visible Light Communication (VLC) system, the method comprising:
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transmitting data to the terminal located in a sector including at least one light source; if a response signal is not received from the terminal in the sector, searching for a sector in which the response signal is received from the terminal; and if the response signal is successfully received from the searched sector, setting the searched sector in which the response signal is received as a serving sector. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for supporting, by a coordinator, mobility of a terminal in a Visible Light Communication (VLC) system, the method comprising:
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transmitting data to the terminal located in a sector from among a plurality of sectors, the sector and each of the plurality of sectors including a predetermined number of light sources; determining whether a response signal is received from the terminal in the sector; searching for at least one sector among the plurality of sectors, if the response signal is not received in the sector; determining whether the response signal is received from the terminal in the at least one sector; and if the response signal is successfully received in the at least one sector, setting the at least one sector in which the response signal is received as a serving sector. - View Dependent Claims (31, 32, 33)
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34. A coordinator for performing Visible Light Communication (VLC) with a terminal, the coordinator comprising:
a controller for controlling to transmit data to at least one light source in a sector, searching for a sector in which the response signal is received from the terminal, if the response signal is not received from the terminal in the sector, and setting the searched sector in which the response signal is received as a serving sector. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41)
Specification