Radio station, radio terminal, and method therefor
First Claim
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1. A method performed in a radio station, the method comprising:
- communicating with a radio terminal performing Licensed Assisted Access (LAA) using a licensed frequency and an unlicensed frequency;
transmitting to the radio terminal, on the licensed frequency, a notification regarding detection or measurement of a non-serving cell on the unlicensed frequency; and
receiving from the radio terminal, on the licensed frequency, a result of measurement of one or more discovery signals transmitted on the non-serving cell, whereinthe detection or the measurement is performed by the radio terminal based on the notification,the radio station comprises a first radio communication node configured to operate a first cell on the licensed frequency and a second radio communication node configured to operate the non-serving cell on the unlicensed frequency, andthe transmitting comprises transmitting the notification from the first radio communication node in the first cell, in response to reception by the first radio communication node of a control message transmitted from the second radio communication node.
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Abstract
A radio station (1) is configured to transmit to a radio terminal (3), on a licensed frequency (Cell #1), a notification regarding detection of proximity to a non-serving cell (Cell #2) on an unlicensed frequency (S102) and to receive from the radio terminal (3), on the licensed frequency (Cell #1), a result of the detection performed by the radio terminal (3) in response to the notification. This contributes, for example, to acquisition of information useful for the radio station to determine whether to allow the radio terminal to perform communication on the unlicensed frequency.
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Citations
24 Claims
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1. A method performed in a radio station, the method comprising:
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communicating with a radio terminal performing Licensed Assisted Access (LAA) using a licensed frequency and an unlicensed frequency; transmitting to the radio terminal, on the licensed frequency, a notification regarding detection or measurement of a non-serving cell on the unlicensed frequency; and receiving from the radio terminal, on the licensed frequency, a result of measurement of one or more discovery signals transmitted on the non-serving cell, wherein the detection or the measurement is performed by the radio terminal based on the notification, the radio station comprises a first radio communication node configured to operate a first cell on the licensed frequency and a second radio communication node configured to operate the non-serving cell on the unlicensed frequency, and the transmitting comprises transmitting the notification from the first radio communication node in the first cell, in response to reception by the first radio communication node of a control message transmitted from the second radio communication node. - View Dependent Claims (2, 3)
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4. A radio station comprising:
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at least one transceiver configured to communicate with a radio terminal performing Licensed Assisted Access (LAA) using a licensed frequency and an unlicensed frequency; at least one memory that stores instructions; and at least one processor configured to execute the instructions to; transmit to the radio terminal, on the licensed frequency, a notification regarding detection or measurement of a non-serving cell on the unlicensed frequency; and receive from the radio terminal, on the licensed frequency, a result of measurement of one or more discovery signals transmitted on the non-serving cell, wherein the detection or the measurement is performed by the radio terminal based on the notification, the at least one transceiver comprises a first radio communication node configured to operate a first cell on the licensed frequency and a second radio communication node configured to operate the non-serving cell on the unlicensed frequency, and the instructions cause the at least one processor to transmit the notification from the first radio communication node in the first cell, in response to reception by the first radio communication node of a control message transmitted from the second radio communication node. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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13. A radio terminal comprising:
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at least one transceiver configured to communicate with a radio station for Licensed Assisted Access (LAA) using a licensed frequency and an unlicensed frequency; at least one memory that stores instructions; and at least one processor, wherein the radio station comprises a first radio communication node configured to operate a first cell on the licensed frequency and a second radio communication node configured to operate the non-serving cell on the unlicensed frequency, and the at least one processor is configured to execute the instructions to; receive, from the first radio communication node in the first cell, a notification regarding detection or measurement of a non-serving cell on the unlicensed frequency; measure, based on the notification, one or more discovery signals transmitted on the non-serving cell; and report, to the first radio communication node in the first cell on the licensed frequency, a result of the measurement of the one or more discovery signals transmitted on the non-serving cell. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A method performed in a radio terminal, the method comprising:
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communicating with a radio station for Licensed Assisted Access (LAA) using a licensed frequency and an unlicensed frequency, wherein the radio station comprises a first radio communication node configured to operate a first cell on the licensed frequency and a second radio communication node configured to operate the non-serving cell on the unlicensed frequency; receiving, from the first radio communication node in the first cell, a notification regarding detection or measurement of a non-serving cell on the unlicensed frequency; measuring, based on the notification, one or more discovery signals transmitted on the non-serving cell; and reporting, to the first radio communication node in the first cell on the licensed frequency, a result of the measurement of the one or more discovery signals transmitted on the non-serving cell. - View Dependent Claims (23, 24)
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Specification