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公开(公告)号：US20080069184A1
公开(公告)日：2008-03-20
申请号：US11976838
申请日：2007-10-29
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
IPC分类号： H04B1/707
摘要： A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes and inverse spreading codes. A transmitting apparatus and a receiving apparatus store the spreading codes and the inverse spreading codes generated by the spreading code generating apparatus, respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication. With the use of the spreading codes for spreading, the input signal is spread over a wide frequency band with uniform power on the frequency axis. Thus, transmission characteristics are improved, and multiplexing capacity is increased.
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公开(公告)号：US08325780B2
公开(公告)日：2012-12-04
申请号：US11976838
申请日：2007-10-29
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
IPC分类号： H04B1/00
摘要： A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes and inverse spreading codes. A transmitting apparatus and a receiving apparatus store the spreading codes and the inverse spreading codes generated by the spreading code generating apparatus, respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication.
摘要翻译： 扩展码产生装置执行生成的正交码的M序列乘法和零值相加以获得信道识别码，然后执行信道识别码的傅立叶逆变换，以产生扩展码和反扩频码。 发送装置和接收装置分别存储由扩展码产生装置产生的扩展码和反向扩展码，并使用分别从存储码中选择的单个码进行扩频通信。
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公开(公告)号：US07330496B2
公开(公告)日：2008-02-12
申请号：US10491925
申请日：2002-10-16
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
IPC分类号： H04B1/00
摘要： A spreading code generating apparatus carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes and inverse spreading codes. A transmitting apparatus and a receiving apparatus store the spreading codes and the inverse spreading codes generated by the spreading code generating apparatus, respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication. With the use of the spreading codes for spreading, the input signal is spread over a wide frequency band with uniform power on the frequency axis. Thus, transmission characteristics are improved, and multiplexing capacity is increased.
摘要翻译： 扩展码产生装置执行生成的正交码的M序列乘法和零值相加以获得信道识别码，然后执行信道识别码的傅立叶逆变换，以产生扩展码和反扩频码。 发送装置和接收装置分别存储由扩展码产生装置产生的扩展码和反向扩展码，并使用分别从存储码中选择的单个码进行扩频通信。 通过使用扩展码进行扩展，输入信号在频率轴上具有均匀功率的宽频带上扩展。 因此，传输特性得到改善，并且复用容量增加。
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公开(公告)号：US07085233B2
公开(公告)日：2006-08-01
申请号：US09972962
申请日：2001-10-10
IPC分类号： H04L12/56
CPC分类号： H04L1/1887 , H04L1/0003 , H04L2001/0093 , H04L2001/0095 , H04W74/02
摘要： In serial transmission of a mixture of isochronous data and anisochronous data, communications through a transmission path with a high ratio of occurrence of transmission errors may disturb images during streaming reproduction and produce noise in sound. To solve this problem, the isochronous data that has not been successfully received is retransmitted by using an anisochronous region. Thus, a transmission error of the isochronous data can be reduced without impairment of isochronous characteristics of the data.
摘要翻译： 在串行传输同步数据和不同步数据的混合的情况下，通过具有高传输错误发生率的传输路径的通信可能在流再现期间干扰图像并产生噪声。 为了解决这个问题，通过使用不同步区域来重发未成功接收的同步数据。 因此，可以减少同步数据的传输错误而不损害数据的等时特性。
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公开(公告)号：US20050018753A1
公开(公告)日：2005-01-27
申请号：US10491925
申请日：2002-10-16
申请人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
发明人： Shinichiro Ohmi , Yasuo Harada , Kazuhiro Ando
摘要： A spreading code generating apparatus (10) carries out M-sequence multiplication and zero value addition of generated orthogonal codes to obtain channel identification codes, and then carries out inverse Fourier transform of the channel identification codes to generate spreading codes (121) and inverse spreading codes (131). A transmitting apparatus (20) and a receiving apparatus (30) store the spreading codes (121) and the inverse spreading codes (131) generated by the spreading code generating apparatus (10), respectively, and use a single code respectively selected from the stored codes to carry out spread spectrum communication. With the use of the spreading codes for spreading, the input signal is spread over a wide frequency band with uniform power on the frequency axis. Thus, transmission characteristics are improved, and multiplexing capacity is increased.
摘要翻译： 扩展码产生装置（10）执行生成的正交码的M序列乘法和零值相加以获得信道识别码，然后执行信道识别码的傅里叶逆变换，以产生扩展码（121）和反扩频 代码（131）。 发送装置（20）和接收装置（30）分别存储由扩展码生成装置（10）生成的扩展码（121）和逆扩展码（131），并使用分别从 存储码进行扩频通信。 通过使用扩展码进行扩展，输入信号在频率轴上具有均匀功率的宽频带上扩展。 因此，传输特性得到改善，并且复用容量增加。
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公开(公告)号：US08934345B2
公开(公告)日：2015-01-13
申请号：US13330849
申请日：2011-12-20
申请人： Pek Yew Tan , Wei Lih Lim , Shinichiro Ohmi , Yasuo Harada
发明人： Pek Yew Tan , Wei Lih Lim , Shinichiro Ohmi , Yasuo Harada
IPC分类号： H04L1/00 , H04L12/26 , H04W74/02 , H04L12/54 , H04L12/801 , H04L12/851 , H04L12/911 , H04L12/927 , H04W72/12 , H04W28/20
CPC分类号： H04W74/02 , H04L47/15 , H04L47/24 , H04L47/70 , H04L47/788 , H04L47/801 , H04L47/824 , H04W28/20 , H04W72/1236
摘要： A station includes a reservation request transmitter, a bandwidth request transmitter, and a data transmitter. The reservation request transmitter transmits a reservation request to an access point during a contention slot specified by the access point. The contention slot is periodically allocated by the access point. The bandwidth request transmitter transmits a bandwidth request to the access point using a first allocated bandwidth allocated to the station as a response to the reservation request. The bandwidth request has a first data structure different from a second data structure of the reservation request, and includes information indicating a required bandwidth for transmitting a data to be transmitted. The data transmitter transmits the data using a second allocated bandwidth allocated to the station based on the required bandwidth.
摘要翻译： 站包括预约请求发射机，带宽请求发射机和数据发射机。 预约请求发送者在由接入点指定的争用时隙期间向接入点发送预约请求。 争用时隙由接入点周期性地分配。 带宽请求发送器使用分配给站的第一分配带宽作为对该预约请求的响应，向接入点发送带宽请求。 带宽请求具有与预留请求的第二数据结构不同的第一数据结构，并且包括指示要发送的数据的所需带宽的信息。 数据发射机使用基于所需带宽分配给站的第二分配带宽来发送数据。
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公开(公告)号：US08102808B2
公开(公告)日：2012-01-24
申请号：US12725954
申请日：2010-03-17
申请人： Pek Yew Tan , Wei Lih Lim , Shinichiro Ohmi , Yasuo Harada
发明人： Pek Yew Tan , Wei Lih Lim , Shinichiro Ohmi , Yasuo Harada
IPC分类号： H04Q7/00
CPC分类号： H04W74/02 , H04L47/15 , H04L47/24 , H04L47/70 , H04L47/788 , H04L47/801 , H04L47/824 , H04W28/20 , H04W72/1236
摘要： Method and apparatus for controlling transmission of a data stream from a station. A QoS registration frame is received, via an access point, from the station. The QoS registration frame includes information indicating a request for transmission of a data stream from the station, and information indicating a minimum required interval and a maximum required interval for an interval which is between start points of two successive durations of a medium dedication. Each duration of the medium dedication represents a time period in which the station is permitted to transmit the data stream. A schedule for the transmission of the data stream is calculated by setting a new interval which is between the minimum required interval and the maximum required interval, when the transmission is admitted. A QoS response frame, which includes information indicating the schedule, is then transmitted from the access point to the station.
摘要翻译： 用于控制来自站的数据流的传输的方法和装置。 经由接入点从站接收QoS注册帧。 QoS注册帧包括指示来自站的数据流的传输请求的信息，以及指示中间执行的两个连续持续时间的起始点之间的间隔的最小所需间隔和最大所需间隔的信息。 媒体奉献的每个持续时间表示站被允许发送数据流的时间段。 通过在允许传输时，通过设置最小所需间隔和最大所需间隔之间的新间隔来计算数据流传输调度。 包括指示调度的信息的QoS响应帧然后从接入点发送到站。
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公开(公告)号：US6111872A
公开(公告)日：2000-08-29
申请号：US608548
申请日：1996-02-28
CPC分类号： H04Q9/04
摘要： A master station performing continuous operations is communicatively coupled with a plurality of remote stations performing intermittent transmission/receiving operations in constant cycles. Control units of the remote stations control radio communication devices to transmit synchronizing signals to the master station in constant cycles respectively. When the synchronizing signals are received from the remote stations, a control unit of the master station acquires information of corresponding intermittent receiving timing from a memory device, and controls a radio communication device to perform transmitting operations to the remote stations in coincidence with the intermittent receiving timing. Further, the control unit of the master station reads random number values from a random number generator in re-transmission of data, and shifts data transmission timing from original timing by time corresponding to the random number values. On the other hand, the control units of the remote stations read random number values from random number generators in re-receiving of the data, and shift data receiving timing from original timing by time corresponding to the random number values. Thus, the data collision probability is reduced.
摘要翻译： 执行连续操作的主站与以多个周期执行间歇发送/接收操作的多个远程站通信耦合。 远程站的控制单元控制无线电通信设备，以恒定周期将同步信号发送到主站。 当从远程站接收到同步信号时，主站的控制单元从存储装置获取对应的间歇接收定时的信息，并且控制无线电通信装置与间歇接收一致地向远程站发送操作 定时。 此外，主站的控制单元在重新发送数据时从随机数发生器读取随机数值，并且从与原始定时相对应的随机数值的时间移位数据发送定时。 另一方面，远程站的控制单元在重新接收数据时从随机数发生器读取随机数值，并且从与原始定时相对应的随机数值的时间移位数据接收定时。 因此，数据冲突概率降低。
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公开(公告)号：US20080062880A1
公开(公告)日：2008-03-13
申请号：US11930599
申请日：2007-10-31
申请人： Tan Yew , Wei Lim , Shinichiro Ohmi , Yasuo Harada
发明人： Tan Yew , Wei Lim , Shinichiro Ohmi , Yasuo Harada
IPC分类号： G08C15/00
CPC分类号： H04W74/02 , H04L47/15 , H04L47/24 , H04L47/70 , H04L47/788 , H04L47/801 , H04L47/824 , H04W28/20 , H04W72/1236
摘要： A method, performed by an access point controls transmission of a data stream from a station, by determining whether or not to admit the transmission of the data stream. The method includes receiving, from the station, a QoS registration request frame, indicating a request for transmission of a data stream, and including information indicating a QoS requirement comprising information indicating a required interval between a start of two successive time periods during which the station is permitted to transmit the data stream. A schedule for the transmission of the data stream subject to the QoS requirement is calculated when the transmission is admitted and a QoS registration response frame, including information indicating the schedule is transmitted to the station.
摘要翻译： 由接入点执行的方法通过确定是否允许数据流的传输来控制来自站的数据流的传输。 该方法包括从站接收指示对数据流的传输的请求的QoS注册请求帧，并且包括指示QoS要求的信息，其包括指示在两个连续时间段的开始之间的所需间隔的信息， 被允许传送数据流。 当接收到传输时，计算用于传输QoS要求的数据流的调度，并且将包括指示调度的信息的QoS注册响应帧发送到站。
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公开(公告)号：US5761223A
公开(公告)日：1998-06-02
申请号：US504740
申请日：1995-07-20
CPC分类号： H04L1/007 , H03M13/35 , H04L1/0009 , H04L1/0057
摘要： A device consists of: a first unit which divides voice and image data into blocks each consisting of a predetermined number of data, and executes a method of selecting one of plural error correction encoding systems and conducting encoding on an arbitrary number of data in one block; a second unit which executes a method of measuring an error state of a communication channel; and a third unit which executes a method of determining data which are to be subjected to encoding conducted in the first unit, and an error correction encoding system. When the state of the communication channel is inferior, only data of high importance can be protected. When the state is superior, a wide range of data including those of low importance can be protected.
摘要翻译： 一种装置包括：将语音和图像数据划分成由预定数量的数据组成的块的第一单元，并且执行选择多个纠错编码系统之一并对一个块中的任意数量的数据进行编码的方法 ; 执行测量通信信道的错误状态的方法的第二单元; 以及执行确定要在第一单元中进行的编码的数据的方法的第三单元和纠错编码系统。 当通信信道的状态较差时，只能保护高重要性的数据。 当状态优越时，可以保护包括低重要性在内的各种数据。
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