Method for determining cell coverage for device-to-device (D2D) operation performed by terminal in wireless communication system, and terminal using the method
First Claim
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1. A method for a cell coverage declaration performed by a terminal in a wireless communication system, the method comprising:
- detecting a reception failure of a specific signal when the terminal determines that the terminal is currently within the cell coverage;
declaring that the terminal is beyond the cell coverage when the reception failure of the specific signal is maintained for at least a specific time period;
detecting a reception success of the specific signal when the terminal determines that the terminal is currently beyond the cell coverage;
declaring that the terminal is within the cell coverage when the reception success of the specific signal is not maintained continuously for at least the specific time period; and
when the terminal declares that the terminal is beyond the cell coverage, performing a D2D operation using a predetermined D2D resource,wherein the terminal in the cell coverage performs the D2D operation under control of a network,wherein the specific signal is transmitted repeatedly from the cell, andwherein the specific time period is longer than a transmission period of the specific signal.
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Abstract
Provided are a method for determining cell coverage for a device-to-device (D2D) operation performed by a terminal in a wireless communication system, and a terminal using the method. The method comprises: receiving a specific signal which is repeatedly transmitted from a cell; determining whether successful detection of the specific signal is maintained for at least a specific amount of time; and declaring that the specific signal is beyond the cell coverage, when the successful detection of the specific signal is not maintained for at least the specific amount of time.
18 Citations
14 Claims
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1. A method for a cell coverage declaration performed by a terminal in a wireless communication system, the method comprising:
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detecting a reception failure of a specific signal when the terminal determines that the terminal is currently within the cell coverage; declaring that the terminal is beyond the cell coverage when the reception failure of the specific signal is maintained for at least a specific time period; detecting a reception success of the specific signal when the terminal determines that the terminal is currently beyond the cell coverage; declaring that the terminal is within the cell coverage when the reception success of the specific signal is not maintained continuously for at least the specific time period; and when the terminal declares that the terminal is beyond the cell coverage, performing a D2D operation using a predetermined D2D resource, wherein the terminal in the cell coverage performs the D2D operation under control of a network, wherein the specific signal is transmitted repeatedly from the cell, and wherein the specific time period is longer than a transmission period of the specific signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A terminal comprising:
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a radio frequency (RF) unit including a transceiver for transmitting/receiving a radio signal; and a processor operatively coupled to the RF unit, wherein the processor is configured for; detecting a reception failure of a specific signal when the terminal determines that the terminal is currently within the cell coverage, declaring that the terminal is beyond the cell coverage when the reception failure of the specific signal is maintained for at least a specific time period, detecting a reception success of the specific signal when the terminal determines that the terminal is currently beyond the cell coverage, declaring that the terminal is beyond the cell coverage when the reception success of the specific signal is not maintained continuously for at least the specific time period, and when the terminal declares that the terminal is beyond the cell coverage, performing a D2D operation using a predetermined D2D resource, wherein the terminal in the cell coverage performs the D2D operation under control of a network, wherein the specific signal is transmitted repeatedly from the cell, and wherein the specific time period is longer than a transmission period of the specific signal. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification