# US 2017/0288792 A1 · Method and apparatus for estimating channel communication quality of wireless communication technology > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0288792 A1 - Document ID: US20170288792A1 - Status: Published application - Kind: A1 - Application number: 15/403,684 - Filed: 2017-01-11 - Published: 2017-10-05 - Earliest claimed: 2016-04-05 - Assignees: Korea University Research and Business Foundation - Applicants: Korea University Research and Business Foundation - Inventors: Hwangnam Kim; Woonghee Lee - Web page: https://patentgrep.com/patent/US20170288792A1 ## CPC - H04B 17/309: Measuring or estimating channel quality parameters - H04B: TRANSMISSION ## Abstract Provided is a channel communication quality estimating method of a wireless communication technology. A method for estimating a channel communication quality of a second wireless communication technology whose frequency band entirely or partially overlaps a frequency band of a first wireless communication technology includes: transmitting predetermined data to an external device through each of a plurality of first channels which forms a frequency band of the first wireless communication technology; generating a channel map which represents a communication quality for each of the plurality of first channels based on a data transmission result through each of the plurality of first channels; and calculating a communication quality index for each of a plurality of second channels which forms a frequency band of the second wireless communication technology, based on the channel map. ## Claims ### Claim 1 A method for estimating a channel communication quality of a second wireless communication technology whose frequency band entirely or partially overlaps a frequency band of a first wireless communication technology, the method comprising: transmitting predetermined data to an external device through each of a plurality of first channels which forms a frequency band of the first wireless communication technology; generating a channel map which represents a communication quality for each of the plurality of first channels based on a data transmission result through each of the plurality of first channels; and calculating a communication quality index for each of a plurality of second channels which forms a frequency band of the second wireless communication technology, based on the channel map. ### Claim 2 (depends on 1) The method according to claim 1, wherein in the generating of a channel map which represents a communication quality, a communication quality for each of the plurality of first channels is determined based on at least one of whether to receive response data of the external device corresponding to the transmitted data and a strength of a signal. ### Claim 3 (depends on 1) The method according to claim 1, wherein the calculating of a communication quality index for each of the plurality of second channels includes: obtaining information on a center frequency and a frequency bandwidth for each of the plurality of first channels and the plurality of second channels; selecting at least one first selected channel which is the first channel having a frequency band which entirely or partially overlaps each of the plurality of second channels; and calculating a communication quality index for each of the plurality of second channels using a communication quality of each of at least one first selected channel included in the channel map. ### Claim 4 (depends on 1) The method according to claim 1, wherein when the transmitting of data, the generating of a channel map, and the calculating of a communication quality index are periodically repeated, in the generating of a channel map, the channel map is generated further based on a predetermined number of data transmission results which is performed before transmitting the data. ### Claim 5 (depends on 4) The method according to claim 4, wherein the repeatedly performed period is determined based on at least one of power consumption in accordance with data transmission of an apparatus which performs a channel communication quality estimating method of a wireless communication technology, remaining power, and whether to perform data communication using the second wireless communication technology. ### Claim 6 (depends on 1) The method according to claim 1, further comprising transmitting good channel information which is information on a second channel having the best calculated communication quality index among the plurality of second channels to a user or a previously registered device. ### Claim 7 (depends on 1) The method according to claim 1, further comprising receiving channel frequency information including information on the center frequency and the frequency bandwidth for each of the plurality of second channels from the user. ### Claim 8 (depends on 1) The method according to claim 1, wherein when data is transmitted or received through the second wireless communication technology which is one of the Bluetooth, the wireless LAN (IEEE 802.11), and ZigBee, one of the Bluetooth, the wireless LAN, and the ZigBee which are not determined as the second wireless communication technology is determined as the first wireless communication technology. ### Claim 9 An apparatus for estimating a channel communication quality of a second wireless communication technology whose frequency band entirely or partially overlaps a frequency band of a first wireless communication technology, the apparatus comprising: a transmitting unit which transmits predetermined data to an external device through each of a plurality of first channels which forms a frequency band of the first wireless communication technology; a channel map generating unit which generates a channel map which represents a communication quality for each of the plurality of first channels based on a data transmission result through each of the plurality of first channels; and an index calculating unit which calculates a communication quality index for each of a plurality of second channels which forms a frequency band of the second wireless communication technology based on the channel map. ### Claim 10 (depends on 9) The apparatus according to claim 9, wherein the channel map generating unit determines a communication quality for each of the plurality of first channels based on at least one of whether to receive response data of the external device corresponding to the transmitted data and a strength of a signal. ### Claim 11 (depends on 9) The apparatus according to claim 9, wherein the index calculating unit obtains information on a center frequency and a frequency bandwidth for each of the plurality of first channels and the plurality of second channels, selects at least one first selected channel which is the first channel having a frequency band which entirely or partially overlaps each of the plurality of second channels; and calculates a communication quality index for each of the plurality of second channels using a communication quality for each of at least one first selected channel included in the channel map. ### Claim 12 (depends on 9) The apparatus according to claim 9, wherein when the data transmission of the transmitting unit, the channel map generation of the channel map generating unit, and the calculating of a communication quality index of the index calculating unit are periodically repeated, the channel map generating unit generates the channel map further based on a predetermined number of data transmission results which is performed before transmitting the data. ### Claim 13 (depends on 12) The apparatus according to claim 12, wherein the repeatedly performed period is determined based on at least one of power consumption in accordance with data transmission, remaining power, and whether to perform data communication using the second wireless communication technology. ### Claim 14 (depends on 9) The apparatus according to claim 9, wherein the transmitting unit further transmits good channel information which is information on a second channel having the best calculated communication quality index among the plurality of second channels to a user or a previously registered device. ### Claim 15 (depends on 9) The apparatus according to claim 9, further comprising a receiving unit which receives channel frequency information including information on a center frequency and a frequency bandwidth for each of the plurality of second channels from the user.