Method and apparatus for near field communication
First Claim
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1. A communication method in a short range communication environment, the communication method comprising:
- searching for, by a reader, via radio frequency (RF) communications without wireless power transmission, communication with another party to transmit a communication request signal;
determining, by the reader, whether a response signal corresponding to the communication request signal is received from communication with another party within a first predetermined time;
performing, by the reader, wireless power transmission when the response signal is not received within the first predetermined time; and
searching for, by the reader, via RF communications, communication with another party when a second predetermined time has elapsed after the performing of wireless power transmission by the reader,wherein the first predetermined time is a time in which a response lapse time that is counted after a frame of the communication request signal is transmitted and a time corresponding to a frame interval are added.
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Abstract
A method and apparatus for near field communication (NFC) are provided. A reader searches for communication with another party according to a first communication method of transmitting a communication request signal or a reader searches for communication with another party according to a second communication method of performing wireless power transmission. When the reader receives a response signal from communication with another party, the reader performs communication with the other party.
18 Citations
12 Claims
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1. A communication method in a short range communication environment, the communication method comprising:
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searching for, by a reader, via radio frequency (RF) communications without wireless power transmission, communication with another party to transmit a communication request signal; determining, by the reader, whether a response signal corresponding to the communication request signal is received from communication with another party within a first predetermined time; performing, by the reader, wireless power transmission when the response signal is not received within the first predetermined time; and searching for, by the reader, via RF communications, communication with another party when a second predetermined time has elapsed after the performing of wireless power transmission by the reader, wherein the first predetermined time is a time in which a response lapse time that is counted after a frame of the communication request signal is transmitted and a time corresponding to a frame interval are added. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A communication apparatus configured to perform communication in a short range communication environment, the communication apparatus comprising:
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a first transmitting and receiving unit configured to search for, via radio frequency (RF) communications without wireless power transmission, communication with another party to transmit a communication request signal; a wireless power transmitting unit configured to perform wireless power transmission; and a communication controller configured to perform communication with the other party when a response signal is received from the other party through the first transmitting and receiving unit, wherein the wireless power transmission is performed by the wireless power transmitting unit when a response signal corresponding to the communication request signal is not received even after a first predetermined time has elapsed after a communication request signal is transmitted by the first transmitting and receiving unit, and communication request signal transmission by the first transmitting and receiving unit is resumed when a second predetermined time has elapsed after the wireless power transmission, wherein the first predetermined time is a time in which a response lapse time that is counted after a frame of the communication request signal is transmitted and a time corresponding to a frame interval are added. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification