-
公开(公告)号：US11470638B2
公开(公告)日：2022-10-11
申请号：US15554717
申请日：2016-03-10
IPC分类号： H04B17/318 , H04W52/24 , H04L12/413 , H04W72/04 , H04L27/28 , H04W52/04 , H04L1/00 , H04L5/00 , H04W74/08 , H04W52/34 , H04W84/12
摘要： Provided are a terminal apparatus and a communication method that are able to improve communication quality and an acquisition rate of transmission opportunity in a communication system requiring carrier sense. The terminal apparatus of the invention includes a reception unit that receives a frame and changes a CCA method on the basis of information included in the frame. The CCA method includes a method of setting a CCA level as a value other than a predetermined value of the CCA level. The reception unit has a function of performing carrier sense and a method of changing the CCA level includes a method of setting a period in which the carrier sense is performed as a value other than a value of a predetermined carrier sense period.
-
公开(公告)号：US11006453B2
公开(公告)日：2021-05-11
申请号：US16657240
申请日：2019-10-18
摘要： A CCA level is made to be variable efficiently while maintaining the fairness relating to acquisition of a transmission opportunity by wireless terminal apparatuses, and thus efficiency of a radio resource is improved. Provided is a terminal apparatus that performs wireless communication with a base station apparatus, and includes; a MAC frame categorization unit categorizing MAC frames, in each of which media access control header is attached to transmission data, based on a type of MAC frame; and a QoS control unit performing a carrier sense using a first CCA level, in a case where the MAC frame is included in a first category that results from the categorization by the MAC frame categorization unit, and performing the carrier sense using a second CCA level different from the first CCA level, in a case where the MAC frame is included in a second category different from the first category.
-
3.发明授权公开(公告)号：US09596011B2
公开(公告)日：2017-03-14
申请号：US14401144
申请日：2013-05-15
CPC分类号： H04B7/0456 , H04B7/0452 , H04B7/0689 , H04W16/08 , H04W16/32
摘要： The present invention provides a technology that sets an offset value with respect to a received power of a reference signal from each of base station apparatuses, taking into consideration a difference between precoding schemes, in a wireless communication system that supports multiple different precoding schemes. The base station apparatus according to the present invention communicates with at least one of terminal apparatuses using the multiple different precoding schemes. The base station apparatus according to the present invention includes a transmission unit that transmits to the terminal apparatus multiple offset values that are to be added by the terminal apparatus to the received power of the reference signal from the base station apparatus, in which the multiple offset values correspond to the multiple precoding schemes, respectively.
摘要翻译： 本发明提供了一种在支持多种不同的预编码方式的无线通信系统中，考虑到预编码方案之间的差异，从基站装置的参考信号的接收功率设定偏移值的技术。 根据本发明的基站装置使用多种不同的预编码方案与终端装置中的至少一个进行通信。 根据本发明的基站装置包括发送单元，其向终端设备发送由终端装置添加的多个基站装置的参考信号的接收功率的偏移值，其中多个偏移量 值分别对应于多个预编码方案。
-
4.发明申请公开(公告)号：US20150103742A1
公开(公告)日：2015-04-16
申请号：US14401144
申请日：2013-05-15
IPC分类号： H04B7/04
CPC分类号： H04B7/0456 , H04B7/0452 , H04B7/0689 , H04W16/08 , H04W16/32
摘要： The present invention provides a technology that sets an offset value with respect to a received power of a reference signal from each of base station apparatuses, taking into consideration a difference between precoding schemes, in a wireless communication system that supports multiple different precoding schemes. The base station apparatus according to the present invention communicates with at least one of terminal apparatuses using the multiple different precoding schemes. The base station apparatus according to the present invention includes a transmission unit that transmits to the terminal apparatus multiple offset values that are to be added by the terminal apparatus to the received power of the reference signal from the base station apparatus, in which the multiple offset values correspond to the multiple precoding schemes, respectively.
摘要翻译： 本发明提供了一种在支持多种不同的预编码方式的无线通信系统中，考虑到预编码方案之间的差异，从基站装置的参考信号的接收功率设定偏移值的技术。 根据本发明的基站装置使用多种不同的预编码方案与终端装置中的至少一个进行通信。 根据本发明的基站装置包括发送单元，其向终端设备发送由终端装置添加的多个基站装置的参考信号的接收功率的偏移值，其中多个偏移量 值分别对应于多个预编码方案。
-
公开(公告)号：US11324003B2
公开(公告)日：2022-05-03
申请号：US16901030
申请日：2020-06-15
发明人： Hiromichi Tomeba , Takashi Onodera
摘要： A radio transmission apparatus selects any one group from a plurality of groups each indicating a combination of a plurality of radio reception apparatuses, notifies at least a plurality of radio reception apparatuses belonging to the selected group of an identification number assigned in advance to the selected group, and allocates transmission data addressed to the radio reception apparatuses belonging to the selected group to each of a plurality of frequency resources based on order of the radio reception apparatuses, which is determined in advance in the selected group.
-
公开(公告)号：US20200022070A1
公开(公告)日：2020-01-16
申请号：US16582884
申请日：2019-09-25
摘要： An object of the present invention is to protect the communication of a legacy terminal while achieving favorable communication by rendering the CCA level of a CCA-variable terminal apparatus variable in an environment, premised on CSMA/CA, where the CCA-variable terminal apparatus and a legacy terminal apparatus coexist. A terminal apparatus for performing wireless communication with a base station apparatus includes: a receiving unit that receives a radio signal transmitted from the base station apparatus; a CCA-variable channel information processing unit that acquires first CCA-variable channel instruction information contained in the radio signal and containing information regarding a range of a CCA level that is available on a certain channel and that is used for clear channel assessment; and a higher layer unit that selects, according to the first CCA-variable channel instruction information, a channel to be used.
-
公开(公告)号：US10477456B2
公开(公告)日：2019-11-12
申请号：US15545801
申请日：2016-01-04
摘要： An object of the present invention is to protect the communication of a legacy terminal while achieving favorable communication rendering the CCA level of a CCA-variable terminal apparatus variable in an environment, premised on CSMA/CA, where the CCA-variable terminal apparatus and a legacy terminal apparatus coexist. A terminal apparatus for performing wireless communication with a base station apparatus includes: a receiving unit that receives a radio signal transmitted from the base station apparatus; a CCA-variable channel information processing unit that acquires first CCA-variable channel instruction information contained in the radio signal and containing information regarding a range of a CCA level that is available on a certain channel and that is used for clear channel assessment; and a higher layer unit that selects, according to the first CCA-variable channel instruction information, a channel to be used.
-
公开(公告)号：US10231265B2
公开(公告)日：2019-03-12
申请号：US14405466
申请日：2013-06-04
发明人： Yoko Masuda , Hideo Namba , Takashi Onodera , Hiromichi Tomeba , Minoru Kubota
IPC分类号： H04W74/08
摘要： MU-MIMO is implemented with little changes in the mechanism of the DCF. There is provided a wireless terminal station apparatus that is used in a wireless communication system formed of one wireless base station apparatus and a plurality of wireless terminal station apparatus, in which grouping is performed on the wireless terminal station apparatus in such a way that the wireless terminal station apparatus belongs to any one of a plurality of groups, and the wireless terminal station apparatus includes a backoff controlling portion that performs control such that a backoff value at the time of random backoff, the backoff value of the wireless terminal station apparatus belonging to at least one group, is selected from a set of candidates for a backoff value which is a set of values formed of predetermined limited numbers.
-
公开(公告)号：US09979516B2
公开(公告)日：2018-05-22
申请号：US14655749
申请日：2013-12-26
IPC分类号： H04L5/26 , H04L5/00 , H04B7/0456 , H04J11/00 , H04B7/06 , H04L1/18 , H04W16/28 , H04B7/0452 , H04L25/03
CPC分类号： H04L5/0026 , H04B7/0452 , H04B7/0456 , H04B7/0697 , H04J11/0033 , H04L1/1812 , H04L1/1893 , H04L25/03898 , H04W16/28
摘要： It is intended to provide a transmission device, a reception device and a communication system capable of improving transmission characteristics by performing packet combining by HARQ in MU-MIMO transmission using non-linear precoding.In a case of receiving NAK from any of terminal devices (400), a base station device (100) retransmits a packet, in which an error occurs, addressed to this terminal device. The base station device (100) transmits the data to be retransmitted together with other transmission data addressed to a different terminal device or addressed to the own terminal device by spatial multiplexing transmission with MU-MIMO. At this time, for the retransmission data, precoding is performed such that a perturbation term same as a perturbation term which has been added to this data by non-linear precoding at the time of initial transmission is added.
-
公开(公告)号：US09673881B2
公开(公告)日：2017-06-06
申请号：US14434161
申请日：2013-10-01
IPC分类号： H04W4/00 , H04B7/06 , H04B7/0417 , H04B7/0452 , H04B7/0456 , H04B7/08 , H04W72/04
CPC分类号： H04B7/0626 , H04B7/0417 , H04B7/0452 , H04B7/0456 , H04B7/0845 , H04W72/0406
摘要： In a wireless communication system that performs non-linear pre-coding, degradation in transmission performance due to a feedback error is improved. The terminal device according to the present invention is a terminal device which receives radio signals that are space-multiplexed and on which non-linear pre-coding is performed, from a base station device including multiple antennas, the terminal device including: a channel state estimator 53 that estimates channel state information on a channel between the terminal device and the base station device; a terminal antenna module 51 that acquires a linear filter that is calculated in the base station device; and a channel equalization module 57 that performs channel equalization processing on the radio signals that are received at a first point in time, based on the channel state information at a second point in time that precedes the first point in time and on the linear filter.
-
-
-
-
-
-
-
-
-
搜索结果
28 条记录 (耗时 0.026 秒)