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公开(公告)号：US20200373974A1
公开(公告)日：2020-11-26
申请号：US16989116
申请日：2020-08-10
发明人： Tomoki MURAKAMI , Yusuke ASAI , Riichi KUDO , Koichi ISHIHARA , Masato MIZOGUCHI , Takeo ICHIKAWA
IPC分类号： H04B7/0452 , H04J11/00 , H04L5/00 , H04L27/26 , H04W28/16 , H04B7/024 , H04B7/06 , H04B7/0456 , H04W88/08
摘要： Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.
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2.发明申请公开(公告)号：US20200187254A1
公开(公告)日：2020-06-11
申请号：US16787138
申请日：2020-02-11
IPC分类号： H04W74/08 , H04W28/02 , H04B7/0452
摘要： A predetermined STA includes a station information collection unit collecting from the STA itself and other STAs station information used for selection of STAs performing simultaneous transmission and for control of the simultaneous transmission, and a simultaneous-transmission request unit knowing occurrence of a QoS data frame based on the station information and transmitting a request frame requesting the simultaneous transmission to an AP. The AP includes a station information collection unit; a simultaneous-transmission determination unit selecting a combination of the STAs performing the simultaneous transmission based on the station information by reception of the request frame; and a trigger transmission unit transmitting to each of the STAs performing the simultaneous transmission a trigger frame instructing to performs the simultaneous transmission and including information necessary for controlling the simultaneous transmission. Each of the STAs designated by the trigger frame is configured to simultaneously transmit the wireless frames to the AP.
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公开(公告)号：US20180288803A1
公开(公告)日：2018-10-04
申请号：US15764171
申请日：2016-10-05
摘要： A format that includes a BSSID of a transmitting station within a preamble of the frame is an HE format, and a format that does not include a BSSID within the preamble but includes a BSSID in a MAC header is a Non-HE format; and a wireless station in the BSS includes a control part which checks a format of a frame received at a predetermined receiver sensitivity or above, and continues demodulation of the received frame if the format is HE format and the BSSID in the received frame is consistent with its own BSS, and stops the demodulation of the received frame if the HE format and the BSSID in the received frame is not consistent with its own BSS.
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公开(公告)号：US20180249507A1
公开(公告)日：2018-08-30
申请号：US15747612
申请日：2016-08-15
发明人： Riichi KUDO , Hirantha Sithira ABEYSEKERA , Munehiro MATSUI , Shoko SHINOHARA , Yasushi TAKATORI , Masato MIZOGUCHI
摘要： Provided is a wireless communication system in which, based on a random access scheme, a transmission opportunity (TXOP) acquired by a wireless access point is granted to a wireless station when performing uplink data transmission from the wireless station to the wireless access point and the TXOP acquired by the wireless station is granted to the wireless access point when performing downlink data transmission from the wireless access point to the wireless station, the system includes a scheduling unit for TXOP granting determining one or more wireless stations having a quality of an uplink data transmission lower than a prescribed value as TXOP responders to which the wireless access point grants the TXOP, and determining one or more wireless stations having a quality of a downlink data transmission lower than the prescribed value as TXOP holders which grant the TXOP to the wireless access point.
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5.发明申请公开(公告)号：US20180027591A1
公开(公告)日：2018-01-25
申请号：US15547405
申请日：2016-02-23
摘要： A predetermined STA includes a station information collection unit collecting from the STA itself and other STAs station information used for selection of STAs performing simultaneous transmission and for control of the simultaneous transmission, and a simultaneous-transmission request unit knowing occurrence of a QoS data frame based on the station information and transmitting a request frame requesting the simultaneous transmission to an AP. The AP includes a station information collection unit; a simultaneous-transmission determination unit selecting a combination of the STAs performing the simultaneous transmission based on the station information by reception of the request frame; and a trigger transmission unit transmitting to each of the STAs performing the simultaneous transmission a trigger frame instructing to performs the simultaneous transmission and including information necessary for controlling the simultaneous transmission. Each of the STAs designated by the trigger frame is configured to simultaneously transmit the wireless frames to the AP.
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公开(公告)号：US20170215083A1
公开(公告)日：2017-07-27
申请号：US15329188
申请日：2015-08-20
发明人： Riichi KUDO , Hirantha Sithira ABEYSEKERA , Yasushi TAKATORI , Takeo ICHIKAWA , Yusuke ASAI , Masato MIZOGUCHI
摘要： A wireless communication system includes a plurality of terminal apparatuses that perform communication using a first frequency band in which communication based on a random access scheme is performed and a second frequency band which is different from the first frequency band, a first base station apparatus that performs communication using the first frequency band, a second base station apparatus that performs communication using the second frequency band, and a cooperation control apparatus that selects a terminal apparatus that transmits user data via the first base station apparatus from among the plurality of terminal apparatuses based on information acquired by the first base station apparatus and the second base station apparatus. The cooperation control apparatus selects which of the first base station apparatus and the selected terminal apparatus acquires access right for transmission of the user data via the first base station apparatus, and notifies the selected terminal apparatus and the first base station apparatus of the selection result.
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公开(公告)号：US20220386378A1
公开(公告)日：2022-12-01
申请号：US17885345
申请日：2022-08-10
摘要： A format that includes a BSSID of a transmitting station within a preamble of the frame is an HE format, and a format that does not include a BSSID within the preamble but includes a BSSID in a MAC header is a Non-HE format; and a wireless station in the BSS includes a control part which checks a format of a frame received at a predetermined receiver sensitivity or above, and continues demodulation of the received frame if the format is HE format and the BSSID in the received frame is consistent with its own BSS, and stops the demodulation of the received frame if the HE format and the BSSID in the received frame is not consistent with its own BSS.
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8.发明申请公开(公告)号：US20200178303A1
公开(公告)日：2020-06-04
申请号：US16787827
申请日：2020-02-11
IPC分类号： H04W74/08 , H04W28/02 , H04B7/0452
摘要： A predetermined STA includes a station information collection unit collecting from the STA itself and other STAs station information used for selection of STAs performing simultaneous transmission and for control of the simultaneous transmission, and a simultaneous-transmission request unit knowing occurrence of a QoS data frame based on the station information and transmitting a request frame requesting the simultaneous transmission to an AP. The AP includes a station information collection unit; a simultaneous-transmission determination unit selecting a combination of the STAs performing the simultaneous transmission based on the station information by reception of the request frame; and a trigger transmission unit transmitting to each of the STAs performing the simultaneous transmission a trigger frame instructing to performs the simultaneous transmission and including information necessary for controlling the simultaneous transmission. Each of the STAs designated by the trigger frame is configured to simultaneously transmit the wireless frames to the AP.
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公开(公告)号：US20190386724A1
公开(公告)日：2019-12-19
申请号：US16480122
申请日：2018-01-25
发明人： Tomoki MURAKAMI , Koichi ISHIHARA , Yasushi TAKATORI , Hirantha ABEYSEKERA , Mamoru AKIMOTO , Masato MIZOGUCHI
摘要： Included are n antenna sets; n antenna switch units; n signal change units each changing a combination of one or more of a phase, a timing, a frequency, and a power of each signal transmitted/received in n antennas being selected from the antenna sets; a notification unit outputting a notification signal, in which control information on the antenna switch units and the signal change units according to a target terminal being a destination/source of the signals transmitted/received in the n antennas, are arranged according to a switch time of each of the antenna switch units and a change time of each of the signal change units; and a control unit sequentially starting control of switching by each of the antenna switch units and control of changing by each of the signal change units in order in which the control information on the each unit in the notification signal is notified.
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公开(公告)号：US20180242222A1
公开(公告)日：2018-08-23
申请号：US15752751
申请日：2016-08-25
CPC分类号： H04W48/06 , H04L1/0001 , H04L1/0003 , H04W52/243 , H04W72/082 , H04W74/0816 , H04W84/12
摘要： Provided is a wireless communication system in which a plurality of basic service sets (BSSs) performing wireless transmission from a transmitting station to a destination station by performing access control based on CSMA/CA exist adjacent to each other, and in which wireless communication is performed by controlling a CCA threshold considering an interference power value between each BSS that uses the same channel, in which the transmitting station includes a control block determining the CCA threshold value according to the interference power value of the BSS considered as an interference source, calculating a SINR in the destination station according to the interference power value, determining a MCS which is a combination of a modulation scheme and a code rate according to the SINR, and performing the access control based on the CSMA/CA.
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