Patents by Inventor Hirantha ABEYSEKERA
Hirantha ABEYSEKERA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12238644Abstract: A radio communication method of connecting a base station with a plurality of terminal stations, the base station including a plurality of radio communication units compatible with a plurality of communication standards or communication schemes, the method including collecting, from each of the plurality of terminal stations, communication quality information representing a communication quality of the terminal station, collecting, from each of the plurality of terminal stations, communication performance information representing a communication performance of the terminal station, collecting, from each of the plurality of terminal stations, identifier information that identifies the terminal station, calculating, based on the communication quality information, the communication performance information and the identifier information that are collected, a setting policy including a setting for each of the plurality of radio communication units, and a switching policy of setting a condition for switching the plType: GrantFiled: April 17, 2020Date of Patent: February 25, 2025Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Tomoki Murakami, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12192842Abstract: A wireless communication system includes a plurality of base stations to which terminal stations are connectable, and a base station control device controlling each of the base stations. The base station control device includes an information collection unit collecting wireless environment information indicating wireless environments around the base stations and the terminal stations from each of the base stations, and a policy calculation unit calculating a policy for connecting the base stations and the terminal stations based on the wireless environment information. Each of the base stations includes receiver receiving the calculated policy a destination calculation unit calculating a destination to which a terminal station left unaccommodated is to be connected based on the received policy, and a transmitter transmitting the received policy and the calculated destination to the terminal station.Type: GrantFiled: January 28, 2020Date of Patent: January 7, 2025Assignee: Nippon Telegraph and Telephone CorporationInventors: Hirantha Abeysekera, Toshiro Nakahira, Shoko Shinohara, Koichi Ishihara, Yasushi Takatori
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Patent number: 12185221Abstract: A wireless communication system includes a plurality of base stations to which one or more terminal stations are connectable, and a base station control device controlling each of the plurality of base stations. The base station control device includes an information collection unit collecting connection information regarding the terminal stations connected to the base stations from each of the base stations, a list generation unit generating a white list indicating the terminal stations allowed to be connected to the base stations for each of the base stations based on the connection information, and a transmission unit configured to transmit the white list to each of the base stations. Each of the base stations includes a reception unit receiving the white list, and a setting unit performing setting so as to allow or inhibit connection of each of the terminal stations to the base station based on the received white list.Type: GrantFiled: January 28, 2020Date of Patent: December 31, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Hirantha Abeysekera, Toshiro Nakahira, Shoko Shinohara, Koichi Ishihara, Yasushi Takatori
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Patent number: 12156053Abstract: A wireless performance evaluation method for performing wireless performance evaluation of a wireless network including wireless base stations and wireless terminal stations includes: before performing wireless performance evaluation operation based on wireless performance evaluation information generated from wireless performance evaluation conditions, determining whether an existing wireless performance evaluation result of wireless performance evaluation operation that has been performed is substitutable or not; and if the existing wireless performance evaluation result is substitutable, skipping arithmetic processing corresponding to the wireless performance evaluation information and substituting the existing wireless performance evaluation result.Type: GrantFiled: March 24, 2020Date of Patent: November 26, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Shoko Shinohara, Hirantha Abeysekera, Yasuhiko Inoue, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12143918Abstract: A wireless communication system includes a base station to which a plurality of terminal stations are connectable and a control unit that controls the base station.Type: GrantFiled: August 7, 2019Date of Patent: November 12, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Toshiro Nakahira, Hirantha Abeysekera, Koichi Ishihara, Tomoki Murakami, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12127113Abstract: Included are a plurality of base stations to which a plurality of terminal stations are connectable and a control station that controls each of the base stations. The control station includes a network communication unit that receives, from each of the base stations, base station information indicating the base station, wireless environment information indicating a reception signal received by the base station from another of the base stations and a signal intensity thereof, and terminal station information indicating the terminal station connected to the base station and a signal intensity and a calculation unit that calculates, based on the base station information, the wireless environment information, and the terminal station information each received from each of the base stations, connection control information for controlling a connection permission from each of the base stations to each of the terminal stations.Type: GrantFiled: August 7, 2019Date of Patent: October 22, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Toshiro Nakahira, Hirantha Abeysekera, Koichi Ishihara, Tomoki Murakami, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12127060Abstract: In a wireless communication system wherein wireless stations transmit on a shared frequency band, each of the wireless station includes means for notifying a control device of environmental information that includes information on interference from outside, and for switching from an operational channel to an evacuation channel notified by the control device when interference from outside is detected on the operational channel, and the control device includes means for calculating an evacuation channel for each wireless station according to a predetermined control procedure based on the environmental information collected from the wireless station, and for notifying the wireless station of the evacuation channel.Type: GrantFiled: June 21, 2019Date of Patent: October 22, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Hirantha Abeysekera, Toshiro Nakahira, Takafumi Hayashi
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Patent number: 12089290Abstract: A radio communication method of connecting a base station with a plurality of terminal stations, the base station including a plurality of radio communication units compatible with a predetermined communication standard, the method including collecting additional-line information including information regarding whether each terminal station is compatible with additional communication standard; collecting request information including a request in the predetermined communication standard of each terminal station; collecting identifier information that identifies each terminal station; calculating, based on the additional-line information, the request information and the identifier information that are collected, a setting policy including a setting for each radio communication unit, and a switching policy of setting a condition for switching the plurality of radio communication units; and setting, for each radio communication unit, the terminal station to be connected based on the setting policy and the switchType: GrantFiled: April 17, 2020Date of Patent: September 10, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Tomoki Murakami, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12082120Abstract: A communication control method for controlling transmission powers transmitted by a plurality of base stations in a coverage area, the coverage area being covered by the plurality of base stations includes setting a transmission power of each base station to a maximum, calculating, for each base station, a percentage of an individual coverage area with respect to the coverage area when the transmission power of each base station is set to the maximum, the individual coverage area serving as a range in which each base station individually accommodates a terminal station, reducing, when a maximum value of the calculated percentages deviates from an average value by a predetermined value or greater, the transmission power of any of the plurality of base stations with the maximum percentage value, newly calculating, for each base station, a percentage of the individual coverage area with respect to the coverage area, and continuing the control until the maximum value of the calculated percentages deviates from thType: GrantFiled: March 17, 2020Date of Patent: September 3, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Hirantha Abeysekera, Koichi Ishihara, Yasushi Takatori
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Patent number: 12074655Abstract: A wireless communication characteristic evaluation method for calculating a wireless communication characteristic of a wireless communication system in which a plurality of wireless communication terminals perform communication by transmitting or exchanging signals includes: an RSSI measurement step of measuring an RSSI measurement used for calculation of the wireless communication characteristic; and a calculation step of calculating the wireless communication characteristic based on the RSSI measurement and correction data of the RSSI measurement according to specifications of the wireless communication terminals or a correction calculation model.Type: GrantFiled: March 24, 2020Date of Patent: August 27, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko Shinohara, Toshiro Nakahira, Yasuhiko Inoue, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12075257Abstract: In a wireless communication system including an intermediate processing device which performs processing between a plurality of base stations to which terminal stations are connectable and a base station control device which controls each of the base stations, the intermediate processing device includes an information collection unit configured to collect wireless environment information which includes information regarding the terminal stations connected to the base stations and which indicates wireless environments around the base stations and the terminal stations, from each of the base stations, a first conversion unit configured to convert the wireless environment information collected by the information collection unit into first information which is equally processable by the base station control device without distinction for each of the base stations, a transmission unit configured to transmit the first information to the base station control device, a reception unit configured to receive a parameterType: GrantFiled: January 28, 2020Date of Patent: August 27, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hirantha Abeysekera, Toshiro Nakahira, Shoko Shinohara, Koichi Ishihara, Yasushi Takatori
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Patent number: 12074654Abstract: A method includes collecting, as environment information, a radio environment represented by a signal received at a plurality of radio communication units from another base station, each of the plurality of radio communication units being switchable between a normal mode in which the radio communication unit performs radio communication as a base station and a subordinate mode in which the radio communication unit performs radio communication as a virtual terminal station, calculating test conduct information for each base station based on base station performance information representing a performance of each base station and the environment information, and conducting an operation test of each base station by, based on the test conduct information, setting any of the radio communication units to the normal mode, switching the radio communication units of the other base station to the subordinate mode, and performing radio communication with each other.Type: GrantFiled: April 20, 2020Date of Patent: August 27, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Tomoki Murakami, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12063643Abstract: A wireless communication system in which wireless stations perform transmission, a plurality of wireless modules that are operated in a shared frequency band being installed in the wireless stations, wherein the wireless stations each include means for notifying a control device of environment information that includes capacity information regarding the wireless station and information regarding a surrounding wireless environment, the control device includes means for determining an operation mode of each wireless module of each wireless station based on the environment information collected from each wireless station, following a control guideline that is determined in advance, and notifying the wireless stations of the operation modes, and the wireless stations each include means for setting the operation modes in the plurality of wireless modules and changing connection of connection destination wireless stations according to the operation modes of the wireless modules, the wireless stations being notifiedType: GrantFiled: June 10, 2019Date of Patent: August 13, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Toshiro Nakahira, Hirantha Abeysekera, Tomoki Murakami, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12047796Abstract: A wireless communication system includes a plurality of wireless base stations and a measurement station, each wireless base station including a wireless communication unit, a wireless information collection unit, and a measurement result collection unit, the measurement station being configured to control the plurality of wireless base stations, wherein the measurement station generates a measurement condition based on wireless environment information collected by the wireless information collection unit of each wireless base station and notifies each wireless base station of a measurement control signal corresponding to the measurement condition, each wireless base station sends traffic addressed to a subordinate wireless terminal station or broadcast traffic at the same time in accordance with the notified measurement control signal, a measurement result collection unit of a wireless base station that is a measurement target measures wireless communication performance and notifies the measurement station oType: GrantFiled: April 13, 2020Date of Patent: July 23, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Tomoki Murakami, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12041462Abstract: There are provided a step 1 of, at a measurement point where a throughput of a wireless communication terminal under a new communication standard is to be acquired, measuring or calculating a wireless communication characteristic (throughput) of a wireless communication terminal under a current communication standard; a step 2 of acquiring parameters of a physical layer and a MAC layer at the time of measuring or calculating the wireless communication characteristic of the wireless communication terminal under the current communication standard; and a step 3 of, with the wireless communication characteristic (throughput) measured or calculated for the wireless communication terminal under the current communication standard and the parameters of the physical layer and the MAC layer at that time as inputs, calculating a wireless communication characteristic (throughput) corresponding to parameters of the wireless communication terminal under the new communication standard.Type: GrantFiled: March 24, 2020Date of Patent: July 16, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko Shinohara, Toshiro Nakahira, Yasuhiko Inoue, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 12035336Abstract: In a wireless communication system in which a plurality of wireless stations perform transmission on a shared frequency band, the wireless stations each include means for notifying a wireless station control apparatus of capability and environment information that includes information about capability of a local wireless station and information about a surrounding environment, and the wireless station control apparatus includes control means for selecting, based on capability and environment information collected from the wireless station, a frequency band to be used for the wireless station capable of using a plurality of frequency bands in accordance with a predetermined control index and setting the selected frequency band. Based on an area coverage rate of the wireless station as the control index, a frequency band with which an area coverage rate of the wireless station having an area coverage rate of less than or equal to a predetermined threshold is improved is selected.Type: GrantFiled: February 25, 2020Date of Patent: July 9, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Hirantha Abeysekera, Toshiro Nakahira, Shoko Shinohara, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 11991546Abstract: A radio base station device includes a plurality of radio units that perform communication with a radio terminal device, a packet data collection unit that collects packet data communicated by the plurality of radio units on the basis of a packet collection policy, a collected packet data analysis unit that performs analysis on packet data on the basis of a packet analysis policy, and transmits analysis result information to the control station device, and an information processing unit that transmits base station performance information and analysis result information to the control station device, and receives a packet collection policy and a packet analysis policy.Type: GrantFiled: March 24, 2020Date of Patent: May 21, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Tomoki Murakami, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 11956662Abstract: A wireless communication system in which wireless stations perform transmission, a plurality of wireless modules that are operated in a shared frequency band being installed in the wireless stations, wherein the wireless stations each include means for notifying a control device of environment information that includes capacity information regarding the wireless station and information regarding a surrounding wireless environment, and setting frequency channels in the plurality of wireless modules, the wireless stations being notified of the frequency channels by the control device, and the control device includes means for calculating a frequency channel of each wireless module of each wireless station based on the environment information collected from each wireless station, following a control guideline that is determined in advance, and notifying the wireless stations of the frequency channels.Type: GrantFiled: June 10, 2019Date of Patent: April 9, 2024Assignee: Nippon Telegraph and Telephone CorporationInventors: Toshiro Nakahira, Hirantha Abeysekera, Tomoki Murakami, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 11950115Abstract: A measurement station collects radio base station performance information related to a radio communication performance of each radio base station, radio connection information related to a radio communication performance and a communication status of a corresponding radio terminal station, generates a measurement condition and an expected measurement result based on the radio base station performance information and the radio connection information, and notifies a measurement control signal corresponding to the measurement condition to the radio terminal station through the radio base station; the radio terminal station performs a communication setting of an own station based on the notified measurement control signal, and notifies a measurement preparation status to the measurement station; and the measurement station measures the radio communication performance by causing a flow of a measurement traffic to the radio terminal station through the radio base station, acquiring a measurement result, and determiType: GrantFiled: April 17, 2020Date of Patent: April 2, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Toshiro Nakahira, Tomoki Murakami, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori
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Patent number: 11943645Abstract: A wireless communication characteristics evaluation method for evaluating wireless communication characteristics of a wireless communication system where a plurality of wireless communication terminals perform communication by transmitting or exchanging signals, the wireless communication characteristics evaluation method including: a step 1 of acquiring power and a band of an interference signal; a step 2 of calculating an interference band rate showing a rate of the band of the interference signal that overlaps with a band of a desired signal; a step 3 of calculating an interference power rate from interference power and the interference band rate and furthermore, calculating steady noise power from the interference power and the interference power rate; a step 4 of determining a real SINR from received power of the desired signal and the steady noise power; and a step 5 of determining wireless communication characteristics of the desired signal from the real SINR.Type: GrantFiled: March 24, 2020Date of Patent: March 26, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Shoko Shinohara, Toshiro Nakahira, Yasuhiko Inoue, Hirantha Abeysekera, Koichi Ishihara, Takafumi Hayashi, Yasushi Takatori