Method for operating a station in a white space, and apparatus for same
First Claim
1. A method for operating a station (STA) in a white space band, in which the station operating as an unlicensed device with permission to operate in an available channel that is not used by a licensed device operates in the white space band by detecting a primary signal of the licensed device, the method comprising:
- receiving a white space map (WSM) including one or more identification information of available channels from a device having database information;
obtaining a measurement result indicating detection of the presence or absence of the primary signal in a specific channel;
changing channel availability of the specific channel which is indicated as available in the WSM, including setting a Type field value to a specific value indicating that channel availability in the WSM is identified from database or the measurement result, when the measurement result indicates that primary signal is measured on the specific channel, by the device having database information; and
transmitting the WSM to another station,wherein an updated WSM includes specific information indicating;
whether each available channel belonging to the updated WSM is indicated as an available channel by both the database information and the measurement result,whether each available channel is indicated as an available channel by the database information but the primary signal for the measurement result is detected, andwhether each available channel is not indicated as an available channel by the database information and the primary signal for the measurement result is not detected.
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Accused Products
Abstract
The present invention relates to a method and apparatus, in which a station (STA) which operates in an available channel that is not used by a licensed device, detects a signal (hereinafter, referred to as ‘primary signal’) of the licensed device in a white space band, and operates in the available channel. According to the present description, the station receives white space map (WSM) information which contains available channel identification information from a device having database information; acquires the result of measurement for detecting the presence of the primary signal in a specific band range; and transmits, to another station, the WSM which is updated to contain information on the band in which the primary signal is detected, wherein the updated WSM further contains information which indicates whether each available channel in the updated WSM is based on the database information or based on the result of measurement.
13 Citations
14 Claims
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1. A method for operating a station (STA) in a white space band, in which the station operating as an unlicensed device with permission to operate in an available channel that is not used by a licensed device operates in the white space band by detecting a primary signal of the licensed device, the method comprising:
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receiving a white space map (WSM) including one or more identification information of available channels from a device having database information; obtaining a measurement result indicating detection of the presence or absence of the primary signal in a specific channel; changing channel availability of the specific channel which is indicated as available in the WSM, including setting a Type field value to a specific value indicating that channel availability in the WSM is identified from database or the measurement result, when the measurement result indicates that primary signal is measured on the specific channel, by the device having database information; and transmitting the WSM to another station, wherein an updated WSM includes specific information indicating; whether each available channel belonging to the updated WSM is indicated as an available channel by both the database information and the measurement result, whether each available channel is indicated as an available channel by the database information but the primary signal for the measurement result is detected, and whether each available channel is not indicated as an available channel by the database information and the primary signal for the measurement result is not detected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A station (STA) for operating as an unlicensed device with permission to operate in an available channel that is not used by a licensed device operating in the white space band, the station (STA) comprising:
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a transceiver configured to receive a white space map (WSM) including one or more identification information of available channels from a device having database information; and a processor functionally connected to the transceiver, the processor being configured to; obtain a measurement result indicating detection of the presence or absence of the primary signal in a specific channel; changing channel availability of the specific channel which is indicated as available in the WSM, including setting a Type field value to a specific value indicating that channel availability in the WSM is identified from database or the measurement result, when the measurement result indicates that primary signal is measured on the specific channel, by the device having database information; and control the transceiver to transmit the WSM to another station, wherein an updated WSM includes specific information indicating; whether each available channel belonging to the updated WSM is indicated as an available channel by both the database information and the measurement result, whether each available channel is indicated as an available channel by the database information but the primary signal for the measurement result is detected, and whether each available channel is not indicated as an available channel by the database information and the primary signal for the measurement result is not detected. - View Dependent Claims (13, 14)
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Specification