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1. 发明授权

US09930555B2 Method and system of measuring communication quality 有权
公开(公告)号：US09930555B2
公开(公告)日：2018-03-27
申请号：US14911531
申请日：2015-01-21
申请人： SoftBank Corp.
发明人： Liang Zhang , Takao Okamawari , Teruya Fujii
IPC分类号： H04L1/00 , H04W24/10 , H04W88/02 , H04W8/22 , H04W24/08
CPC分类号： H04W24/10 , H04W8/22 , H04W24/08 , H04W88/02
摘要： Methods and systems of measuring communication quality in a communication via a mobile communication network are provided. A connection status of a communication terminal apparatus to a mobile communication network is confirmed when a timing of transmitting a measurement data of the communication terminal apparatus side from the communication terminal apparatus to a server comes. The measurement data is transmitted from the communication apparatus to the server when determining that it is a status capable of transceiving the measurement data, based on the confirmation result of connection status, and the measurement data is not transmitted from the communication terminal apparatus to the server when determining it is not a status capable of transceiving the measurement data. A communication quality in the communication via the mobile communication network is measured based on the measurement data received by the server from the communication terminal apparatus.

2. 发明授权

US09692531B2 Method and system of measuring communication quality 有权
公开(公告)号：US09692531B2
公开(公告)日：2017-06-27
申请号：US14911519
申请日：2015-02-02
申请人： SoftBank Corp.
发明人： Daisuke Maeda , Liang Zhang , Takao Okamawari , Teruya Fujii
IPC分类号： H04W24/08 , H04B17/309 , H04W24/10 , H04W88/02
CPC分类号： H04B17/309 , H04W24/08 , H04W24/10 , H04W88/02
摘要： Methods and systems of measuring communication quality are provided, by which measurement schedules of communication quality can be managed and controlled easily. A plural measurement-time slot is set with respect to a communication line used for communication quality measurements between a plural communication terminal apparatus via a mobile communication network, wherein each measurement-time slot has a time corresponding to one measurement of communication quality and the plural measurement-time slot is continuously arranged at a predetermined period, and a plural measurement schedule for measuring communication quality in each of communications with the plural communication terminal apparatus to the plural measurement-time slot. Information of the measurement schedule for each of the plural communication terminal apparatus is delivered to each communication terminal apparatus, and a communication for the communication quality measurement with the communication terminal apparatus corresponding to the measurement schedule via the communication line is performed when the time of measurement schedule comes.

3. 发明申请

US20170094052A1 COMMUNICATION SYSTEM AND COMMUNICATION METHOD 审中-公开
公开(公告)号：US20170094052A1
公开(公告)日：2017-03-30
申请号：US15126026
申请日：2014-04-02
申请人： SoftBank Corp.
发明人： Liang Zhang , Takao Okamawari , Teruya Fujii
IPC分类号： H04M3/22 , H04M3/26 , H04M1/24
CPC分类号： H04M3/2236 , H04M1/24 , H04M3/2227 , H04M3/26 , H04M2207/18
摘要： Communication systems and communication methods capable of evaluating a voice quality in a voice communication of a communication network and a presence or absence of a call drop of the voice communication are provided. A voice communication of transceiving a test signal for voice communication quality evaluation between a communication terminal apparatus 100 and a voice communication evaluation system 400 via the communication network 300 is performed. A voice quality evaluation value is calculated based on the test signal before transmission and the test signal after reception in the voice communication. A presence or absence of a call drop of the voice communication is determined based on a presence or absence of reception interruption of the test signal.

4. 发明授权

US10104225B2 Communication system and communication method 有权
公开(公告)号：US10104225B2
公开(公告)日：2018-10-16
申请号：US15126026
申请日：2014-04-02
申请人： SoftBank Corp.
发明人： Liang Zhang , Takao Okamawari , Teruya Fujii
IPC分类号： H04W24/00 , H04M3/22 , H04M1/24 , H04M3/26
摘要： Communication systems and communication methods capable of evaluating a voice quality in a voice communication of a communication network and a presence or absence of a call drop of the voice communication are provided. A voice communication of transceiving a test signal for voice communication quality evaluation between a communication terminal apparatus 100 and a voice communication evaluation system 400 via the communication network 300 is performed. A voice quality evaluation value is calculated based on the test signal before transmission and the test signal after reception in the voice communication. A presence or absence of a call drop of the voice communication is determined based on a presence or absence of reception interruption of the test signal.

5. 发明申请

US20160262043A1 METHOD AND SYSTEM OF MEASURING COMMUNICATION QUALITY 有权
标题翻译：测量通信质量的方法和系统
公开(公告)号：US20160262043A1
公开(公告)日：2016-09-08
申请号：US14426493
申请日：2014-04-02
申请人： SoftBank Corp.
发明人： Liang Zhang , Takao Okamawari , Teruya Fujii
IPC分类号： H04W28/02 , H04M3/22
CPC分类号： H04W28/0236 , H04M3/2236 , H04M2207/18 , H04W24/00 , H04W24/10 , H04W28/0215 , H04W28/0226
摘要： Methods and systems of measuring communication quality are provided, by which various types of communication quality measurements can be flexibly performed as the measurement condition can be set or changed easily and optionally, while load of processing in the communication terminal apparatus can be suppressed. Measurement condition for measuring communication quality is delivered to a communication terminal apparatus capable of communicating via a mobile communication network and a communication with the communication terminal apparatus via the mobile communication network is performed at a predetermined timing that satisfies the measurement condition. Then, at least one of terminal-side measurement data including terminal-status log information and network-side measurement data including terminal-existing base-station quality information corresponding to communication corresponding to the predetermined timing which are recorded in the communication terminal apparatus is acquired, and an index value of communication quality in communication via the mobile communication network is calculated based on at least one of the terminal-side measurement data and the network-side measurement data.
摘要翻译：提供了测量通信质量的方法和系统，通过该方法和系统可以灵活地执行各种类型的通信质量测量，因为可以容易地和任选地在可以抑制通信终端设备中的处理负载的情况下设置或改变测量条件。在满足测量条件的预定定时执行用于测量通信质量的测量条件被传送到能够经由移动通信网络进行通信的通信终端设备，并且经由移动通信网络与通信终端设备进行通信。然后，获取终端侧测量数据，包括终端状态日志信息和网络侧测量数据，该网络侧测量数据包括对应于记录在通信终端设备中的与预定定时相对应的通信的终端存在基站质量信息并且基于终端侧测量数据和网络侧测量数据中的至少一个来计算经由移动通信网络进行通信的通信质量的索引值。

6. 发明授权

US10707949B2 Communication system, base station and communication control method 有权
公开(公告)号：US10707949B2
公开(公告)日：2020-07-07
申请号：US16078753
申请日：2017-01-26
申请人： SoftBank Corp.
发明人： Shota Shiobara , Takao Okamawari , Teruya Fujii
IPC分类号： H04W28/00 , H04B7/155 , H04W28/18 , H04W72/12 , H04J11/00 , H04B7/024 , H04L5/00 , H04W28/16 , H04W24/02 , H04B1/71 , H04W24/10 , H04W92/20 , H04B7/0452 , H04W36/30
摘要： A communication system, a base station and a communication control method are provided, which are capable of cooperatively transmitting data from a plurality of base stations to a plurality of communication terminals using a same radio resource. A first base station acquires a value of an interference suppression parameter that is applied to a transmission signal from the first base station so as to suppress interference from a second base station in a first communication terminal, when the first communication terminal locates in a cell border area. The second base station duplicates a desired data for a second communication terminal located in a cell of the second base station, and transmits the duplicated desired data to the first base station. The first base station generates a transmission signal based on the value of the interference suppression parameter, the desired data for the first communication terminal, the desired data for the second communication terminal received from the second base station and a control information on data cooperative transmission, and the second base station generates a transmission signal of the desired data for the second communication terminal. Each of the base stations cooperatively transmits the transmission signal at a predetermined data cooperative transmission timing.

7. 发明申请

US20190075535A1 COMMUNICATION SYSTEM AND SMALL-CELL BASE STATION 审中-公开
公开(公告)号：US20190075535A1
公开(公告)日：2019-03-07
申请号：US16080331
申请日：2017-01-30
申请人： SoftBank Corp.
发明人： Shota Shiobara , Takao Okamawari , Teruya Fujii
IPC分类号： H04W56/00 , H04W16/32
摘要： A deviation of time at which downlink signals synchronously transmitted from a macro-cell base station and a small-cell base station respectively reach a communication terminal apparatus can be made within an allowable range, without being affected by transmission delay in transmission cables of base station and propagation delay in radio transmission paths. The small-cell base station is provided with a radio transceiving section connected with antenna, a radio communication control section, a transmission cable connected with the radio transceiving section and the radio communication control section, and a downlink signal receiving section for receiving downlink signals transmitted from the macro-cell base station and the own base station respectively. The small-cell base station measures a reception-timing difference of downlink signals transmitted from the macro-cell base station and the own base station based on a reception result of the downlink signal, adjusts a transmission timing of downlink signal of the own base station based on the reception-timing difference, and transmits a downlink signal at the adjusted transmission timing.

8. 发明授权

US09668165B2 Measuring communication quality via a mobile communication network 有权
公开(公告)号：US09668165B2
公开(公告)日：2017-05-30
申请号：US14426493
申请日：2014-04-02
申请人： SoftBank Corp.
发明人： Liang Zhang , Takao Okamawari , Teruya Fujii
IPC分类号： H04L1/00 , H04W28/02 , H04W24/00 , H04M3/22
CPC分类号： H04W28/0236 , H04M3/2236 , H04M2207/18 , H04W24/00 , H04W24/10 , H04W28/0215 , H04W28/0226
摘要： Methods and systems of measuring communication quality are provided, by which various types of communication quality measurements can be flexibly performed as the measurement condition can be set or changed easily and optionally, while load of processing in the communication terminal apparatus can be suppressed. Measurement condition for measuring communication quality is delivered to a communication terminal apparatus capable of communicating via a mobile communication network and a communication with the communication terminal apparatus via the mobile communication network is performed at a predetermined timing that satisfies the measurement condition. Then, at least one of terminal-side measurement data including terminal-status log information and network-side measurement data including terminal-existing base-station quality information corresponding to communication corresponding to the predetermined timing which are recorded in the communication terminal apparatus is acquired, and an index value of communication quality in communication via the mobile communication network is calculated based on at least one of the terminal-side measurement data and the network-side measurement data.

9. 发明授权

US10785738B2 Communication system and small-cell base station 有权
公开(公告)号：US10785738B2
公开(公告)日：2020-09-22
申请号：US16080331
申请日：2017-01-30
申请人： SoftBank Corp.
发明人： Shota Shiobara , Takao Okamawari , Teruya Fujii
IPC分类号： H04W56/00 , H04W16/32 , H04W16/28 , H04W28/16
摘要： A deviation of time at which downlink signals synchronously transmitted from a macro-cell base station and a small-cell base station respectively reach a communication terminal apparatus can be made within an allowable range, without being affected by transmission delay in transmission cables of base station and propagation delay in radio transmission paths. The small-cell base station is provided with a radio transceiving section connected with antenna, a radio communication control section, a transmission cable connected with the radio transceiving section and the radio communication control section, and a downlink signal receiving section for receiving downlink signals transmitted from the macro-cell base station and the own base station respectively. The small-cell base station measures a reception-timing difference of downlink signals transmitted from the macro-cell base station and the own base station based on a reception result of the downlink signal, adjusts a transmission timing of downlink signal of the own base station based on the reception-timing difference, and transmits a downlink signal at the adjusted transmission timing.

10. 发明申请

US20190089453A1 COMMUNICATION SYSTEM, BASE STATION AND COMMUNICATION CONTROL METHOD 审中-公开
公开(公告)号：US20190089453A1
公开(公告)日：2019-03-21
申请号：US16078753
申请日：2017-01-26
申请人： SoftBank Corp.
发明人： Shota Shiobara , Takao Okamawari , Teruya Fujii
IPC分类号： H04B7/155 , H04W28/18 , H04W72/12 , H04W92/20 , H04W24/10 , H04B1/71
摘要： A communication system, a base station and a communication control method are provided, which are capable of cooperatively transmitting data from a plurality of base stations to a plurality of communication terminals using a same radio resource. A first base station acquires a value of an interference suppression parameter that is applied to a transmission signal from the first base station so as to suppress interference from a second base station in a first communication terminal, when the first communication terminal locates in a cell border area. The second base station duplicates a desired data for a second communication terminal located in a cell of the second base station, and transmits the duplicated desired data to the first base station. The first base station generates a transmission signal based on the value of the interference suppression parameter, the desired data for the first communication terminal, the desired data for the second communication terminal received from the second base station and a control information on data cooperative transmission, and the second base station generates a transmission signal of the desired data for the second communication terminal. Each of the base stations cooperatively transmits the transmission signal at a predetermined data cooperative transmission timing.

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