-
公开(公告)号：US12096435B2
公开(公告)日：2024-09-17
申请号：US17768456
申请日：2020-10-13
发明人： Ryota Shiina , Tatsuya Fukui , Satoshi Narikawa , Katsuya Minami , Satoshi Ikeda , Shunsuke Saruwatari , Takashi Watanabe , Kazuhiko Kinoshita
IPC分类号： H04W72/20 , H04B10/2575 , H04B10/27 , H04W88/10
CPC分类号： H04W72/20 , H04B10/2575 , H04B10/27 , H04W88/10
摘要： An object is to provide a communication system in which there are no restrictions on a communicable area and it is not necessary to install communication software on a wireless device. A communication system according to the present invention is configured so that the functions of a wireless access point are separated into a front-end unit on a wireless terminal side and a back-end side on the Internet side, radio signal processing functions supporting a wireless scheme of the wireless terminal are deployed only on the back end, and only relatively simple processing functions such as E/O conversion are deployed on the front end near the wireless terminal 311.
-
2.发明授权公开(公告)号：US11728904B2
公开(公告)日：2023-08-15
申请号：US17624534
申请日：2019-07-04
摘要： In the present disclosure, a wireless base station apparatus sends out continuous light having a predetermined characteristic to a wireless terminal apparatus, and the wireless terminal apparatus selects authentication information corresponding to the predetermined characteristic, and transmits the authentication information to the wireless base station apparatus by RF wireless. When confirming that the received authentication information matches authentication information corresponding to the predetermined characteristic, the wireless base station apparatus permits information communication between the wireless terminal apparatus and an upper network.
-
公开(公告)号：US12063067B2
公开(公告)日：2024-08-13
申请号：US17915850
申请日：2020-04-02
发明人： Ryota Shiina , Tomohiro Taniguchi , Kazutaka Hara , Shinya Tamaki , Tomoki Murakami , Toshiro Nakahira
IPC分类号： H04B10/11 , H04B10/112 , H04B10/114 , H04B10/2575 , H04B10/50 , H04W4/38 , H04W4/90
CPC分类号： H04B10/112 , H04B10/114 , H04B10/25752 , H04B10/50 , H04W4/38 , H04W4/90
摘要： An object of the present disclosure is to inform a user of a safe evacuation guidance route in real time using smart lightings without deploying dedicated evacuation guidance facilities.
The present disclosure is a wireless communication system including: one or more wireless base stations that wirelessly communicate with a terminal; a plurality of optical base stations that transmit an optical signal to the terminal; and a base station control device that controls the optical signal transmitted by the optical base stations, wherein the base station control device collects environment information around the optical base stations, detects a disaster around the optical base stations using the collected environment information, and when detecting a disaster, causes the optical base station installed at a position close to a disaster occurrence location and the optical base station installed at a position far from the disaster occurrence location to output light of different colors.-
公开(公告)号：US12015977B2
公开(公告)日：2024-06-18
申请号：US17625435
申请日：2019-07-10
摘要： A control station device includes a policy generation unit that calculates a priority order of a plurality of wireless communication systems having different types of systems on a basis of information acquired from a wireless terminal device that selects one wireless communication system from among the plurality of wireless communication systems to perform wireless communication, and generates a selection policy indicating the priority order of the plurality of wireless communication systems, and a policy delivery unit that delivers the selection policy indicating the priority order of the plurality of wireless communication systems to the wireless terminal device. With this configuration, an optimal wireless communication system that maximizes the performance of each wireless terminal device can be selected while reducing the load and calculation time imposed on the control station device.
-
公开(公告)号：US12074640B2
公开(公告)日：2024-08-27
申请号：US17785370
申请日：2019-12-16
发明人： Ryota Shiina , Tomohiro Taniguchi , Kazutaka Hara , Shinya Tamaki , Tomoki Murakami , Toshiro Nakahira
IPC分类号： H04B10/114
CPC分类号： H04B10/114
摘要： An object is to provide a terminal device, a communication method, and a communication system which are capable of acquiring accurate optical ID information regardless of the position of the terminal device and the light receiving angle.
The terminal device, the communication method, and the communication system according to the present invention each sets a threshold value for the illuminance of a received optical signal by using a moving average method, a weighted moving average method, or an exponential moving average, so that the optical signal can be binarized with a threshold value according to a change in the position of the terminal device, the light receiving angle, or the like. Information from other sensors may be used to set the threshold value.-
公开(公告)号：US11929781B2
公开(公告)日：2024-03-12
申请号：US17790990
申请日：2020-01-23
发明人： Ryota Shiina , Tomohiro Taniguchi , Kazutaka Hara , Shinya Tamaki , Tomoki Murakami , Toshiro Nakahira
摘要： An objective is to provide a terminal device, a communication method, and a communication system in which the time taken by connection operations/authentication operations does not increase proportionally with the pattern length, even if the transmitting side and the receiving side are not synchronized. A terminal device, a communication method, and a communication system according to the present invention create n pieces of signal information (n-bit patterns) by sequentially shifting each bit of a single piece of received signal information (n-bit pattern) one bit at a time. Through the above, signal information time-shifted by one bit each is obtained. Thus, even if the transmitting side and the receiving side are not synchronized, one of the n pieces of signal information is a signal synchronized with the transmitting side. Thereafter, the signal synchronized with the transmitting side can be detected by a brute-force calculation with the patterns (ID information) in the list.
-
公开(公告)号：US11700560B2
公开(公告)日：2023-07-11
申请号：US17619663
申请日：2019-06-20
IPC分类号： H04B10/00 , H04W36/08 , H04B10/079 , H04B10/112 , H04J14/00
CPC分类号： H04W36/08 , H04B10/0795 , H04B10/112
摘要： The present disclosure aims to enable communication to be performed with stable quality even when a user uses a terminal while moving. In the wireless communication system according to the present disclose, a switching control unit 15 sets switching illuminance pth for maintaining illuminance of an optical signal received by a terminal 91 at requested illuminance corresponding to throughput or higher during the time until connection switching between the communication with an optical wireless access point 92 and the communication with an RF wireless access point 93 is completed, and when the received illuminance p becomes lower than the switching illuminance pth during connection with the optical wireless access point 92, the switching control unit 15 performs connection switching from the optical wireless communication to the RF wireless communication.
-
公开(公告)号：US12063065B2
公开(公告)日：2024-08-13
申请号：US17784931
申请日：2019-12-16
发明人： Ryota Shiina , Tomohiro Taniguchi , Kazutaka Hara , Shinya Tamaki , Tomoki Murakami , Toshiro Nakahira
摘要： An object of the present invention is to provide a terminal device, a communication method, and a communication system which are capable of reducing the error rate even if the transmitting side and the receiving side are asynchronous. The terminal device, communication method, and communication system according to the present invention sample an optical signal more finely than a 0/1 bit pattern in optical ID estimation processing for determining which of 1/0 the data acquired by an optical sensor is, and perform a majority decision using a plurality of sampling values in a decision processing window. Thus, even if the correct sampling value fails to be obtained, the correct bit value can be derived from other samplings.
-
公开(公告)号：US12022283B2
公开(公告)日：2024-06-25
申请号：US17624513
申请日：2019-07-04
IPC分类号： H04B10/00 , H04B10/2575 , H04B10/54 , H04W12/06
CPC分类号： H04W12/06 , H04B10/25752 , H04B10/54
摘要： An objective is to provide a communication system, a terminal, a communication method, and a program capable of improving the probability of successful authentication regardless of mobility of the terminal.
The communication system according to the present invention includes a terminal 30 including: a sensor unit 36 that senses a state of the terminal and includes at least one of an acceleration sensor, a gyro sensor, a position sensor, and a proximity sensor; an optical receiver 31 that receives an optical modulation signal and outputs an electrical signal; a correction circuit 34 that corrects the electrical signal on a basis of the state of the terminal sensed by the sensor unit 36 when one of the following is true: illuminance of light received from an optical transmitter 21 by the optical receiver 31 is equal to or lower than an illuminance threshold value; and a signal intensity of the electrical signal output by the optical receiver 31 is equal to or lower than an intensity threshold value; an authentication information checking circuit 32 that checks the authentication information contained in the electrical signal; and a terminal-side RF transmitter/receiver 33 that transmits the authentication information to a base station 20 via RF wireless communication.-
公开(公告)号：US11212004B2
公开(公告)日：2021-12-28
申请号：US17262976
申请日：2019-07-23
发明人： Ryota Shiina , Kazutaka Hara , Satoshi Ikeda
IPC分类号： H04B10/00 , H04B10/2575 , H04B10/079 , H04W24/02 , H04B17/309 , H04J14/00
摘要： An optical/RF wireless hybrid communication system and a control method capable of solving the instability of link states of an RF wireless link and an optical wireless link is provided. According to an optical/RF wireless hybrid communication system and a control method of the present invention, when data is transmitted, the link is not limited to one of an RF wireless link and an optical wireless link, a link state is determined based on signal quality received in channels of both the RF wireless link and the optical wireless link, and a distribution of data to be transmitted in each link is determined based on a result thereof. For this reason, the link can be switched according to circumstances of the transmission state due to an external disturbance and the like.
-
-
-
-
-
-
-
-
-
搜索结果
14 条记录 (耗时 0.027 秒)
