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    • 44. 发明授权
    • Communication terminal apparatus and base station apparatus
    • 通信终端装置和基站装置
    • US07761113B2
    • 2010-07-20
    • US12132992
    • 2008-06-04
    • Kenichi MiyoshiTakahisa AoyamaToyoki UeOsamu KatoKatsuhiko HiramatsuAtsushi Sumasu
    • Kenichi MiyoshiTakahisa AoyamaToyoki UeOsamu KatoKatsuhiko HiramatsuAtsushi Sumasu
    • H04B7/00
    • H04W52/265H04W52/24H04W52/241H04W52/246H04W52/262H04W52/267H04W52/367
    • An allocation section 101 in a base station apparatus of the present invention sets the transmission rate of a transmit signal for a communication terminal apparatus based on a DRC signal transmitted from that communication terminal apparatus. A power margin information detector 117 detects power margin information from a demodulated signal generated by a demodulator 115, and, using that power margin information, a power setting section 118 makes a setting so as to give the minimum transmission power value at which received signal characteristics in each communication terminal apparatus meet the desired quality. Using the set transmission power value, the base station apparatus transmits a transmit signal of the set transmission rate to a communication terminal apparatus. By this means it is possible to suppress interference to a communication terminal apparatus that performs adaptive modulation communication with another base station apparatus and a communication terminal apparatus that performs adaptive modulation communication with the local base station apparatus at the same time.
    • 本发明的基站装置中的分配部101基于从该通信终端装置发送的DRC信号来设定通信终端装置的发送信号的发送速度。 功率余量信息检测器117从解调器115产生的解调信号中检测功率余量信息,并且使用该功率余量信息,功率设定部118进行设定,以便给出接收信号特性 在每个通信终端设备中满足期望的质量。 使用设定的发送功率值,基站装置向通信终端装置发送所设定的发送速率的发送信号。 通过这种方式,可以抑制对与本地基站装置同时执行自适应调制通信的另一基站装置和通信终端装置进行自适应调制通信的通信终端装置的干扰。
    • 45. 发明申请
    • RETRANSMISSION CONTROL METHOD, BASE STATION AND MOBILE STATION
    • 重新设计控制方法,基站和移动站
    • US20090052392A1
    • 2009-02-26
    • US11816166
    • 2006-01-19
    • Atsushi SumasuHidenori KayamaHiroki HagaMasayuki HoshinoKatsuyoshi NakaJunya YamazakiRyohei Kimura
    • Atsushi SumasuHidenori KayamaHiroki HagaMasayuki HoshinoKatsuyoshi NakaJunya YamazakiRyohei Kimura
    • H04W36/02
    • H04L1/1887H04W36/02
    • A base station, a mobile station and a retransmission control method for enabling communication to be more efficiently performed. In a communication system comprising a base station (100) and a mobile station (200), a time period required for the retransmission of a transport packet to complete is determined, and a retransmission control is performed, based on the required time period, to change the order of executing the retransmission of the transport packet and a handover. In this way, when it is estimated that the retransmission will complete soon, the retransmission is caused to complete in a handover source system, thereby avoiding waste of communication resources used in the preceding transmission and retransmission processes. When it is estimated that the retransmission will continue for a while, the communication resources used in the preceding transmission and retransmission processes are wasted, but a more appropriate MCS can be assigned, in a handover destination system, so as to perform a retransmission, thereby enabling communication to be efficiently performed.
    • 基站,移动站和重发控制方法,能够更有效地进行通信。 在包括基站(100)和移动站(200)的通信系统中,确定传输分组完成重传所需的时间段,并根据所需时间进行重发控制, 改变执行传输分组的重传的顺序和切换。 以这种方式,当估计重传将很快完成时,在切换源系统中重新发送完成,从而避免浪费在前面的传输和重传过程中使用的通信资源。 当估计重传将持续一段时间时,在先前的传输和重传过程中使用的通信资源被浪费,但是在切换目的地系统中可以分配更适合的MCS以便执行重传,由此 使得能够有效地执行通信。
    • 46. 发明申请
    • TRANSMITTING APPARATUS, RECEIVING APPARATUS, AND WIRELESS COMMUNICATION METHOD
    • 发送装置,接收装置和无线通信方法
    • US20090046787A1
    • 2009-02-19
    • US11813722
    • 2005-12-27
    • Mitsuru UesugiEiji OtaAtsushi SumasuKeisuke Ebiko
    • Mitsuru UesugiEiji OtaAtsushi SumasuKeisuke Ebiko
    • H04L27/28
    • H04L25/022H04L5/0007H04L5/0048H04L25/0232H04L25/03159H04L25/03891H04L2025/03414H04L2025/03522
    • A transmitting apparatus, a receiving apparatus and a wireless communication method for suppressing interference between codes, while further reducing the ratio of redundant components occupying a signal to improve the transmission efficiency. The transmitting apparatus (100) transmits a signal having a frame structure in which a plurality of symbols follow a pilot symbol to which a guard interval has been added. In the receiving apparatus (200) that receives that signal, a long FFT target section acquiring part (202) acquires, from the received OFDM signal, a long FFT target section that is a target section in which delay waves are to be removed by use of a pilot symbol. A long FFT part (203) performs a fast Fourier transformation of the long FFT target section to convert it to a frequency domain signal. A frequency equalizing part (204) performs a frequency equalization of the long FFT target section by use of an interpolation result of communication line estimation value. A long IFFT part (205) performs an inverse fast Fourier transformation of the long FFT target section as frequency equalized to convert it back to a time domain signal.
    • 一种用于抑制代码之间的干扰的发送装置,接收装置和无线通信方法,同时进一步减少占用信号的冗余部件的比率以提高传输效率。 发送装置(100)发送具有帧结构的信号,其中多个符号遵循已经添加有保护间隔的导频符号。 在接收到该信号的接收装置(200)中,长FFT对象部分获取部(202)从接收到的OFDM信号中获取作为要使用的移除延迟波的目标部分的长FFT对象部 的飞行员符号。 长FFT部(203)对长FFT对象部进行快速傅里叶变换,将其变换为频域信号。 频率均衡部分(204)通过使用通信线路估计值的内插结果来执行长FFT对象部分的频率均衡。 长IFFT部分(205)执行长FFT目标部分的快速傅立叶逆变换作为均衡的频率,以将其转换回到时域信号。
    • 47. 发明授权
    • Communication terminal apparatus and base station apparatus
    • 通信终端装置和基站装置
    • US07460880B2
    • 2008-12-02
    • US11341430
    • 2006-01-30
    • Kenichi MiyoshiTakahisa AoyamaToyoki UeOsamu KatoKatsuhiko HiramatsuAtsushi Sumasu
    • Kenichi MiyoshiTakahisa AoyamaToyoki UeOsamu KatoKatsuhiko HiramatsuAtsushi Sumasu
    • H04B7/00
    • H04W52/265H04W52/24H04W52/241H04W52/246H04W52/262H04W52/267H04W52/367
    • An allocation section 101 in a base station apparatus of the present invention sets the transmission rate of a transmit signal for a communication terminal apparatus based on a DRC signal transmitted from that communication terminal apparatus. A power margin information detector 117 detects power margin information from a demodulated signal generated by a demodulator 115, and, using that power margin information, a power setting section 118 makes a setting so as to give the minimum transmission power value at which received signal characteristics in each communication terminal apparatus meet the desired quality. Using the set transmission power value, the base station apparatus transmits a transmit signal of the set transmission rate to a communication terminal apparatus. By this means it is possible to suppress interference to a communication terminal apparatus that performs adaptive modulation communication with another base station apparatus and a communication terminal apparatus that performs adaptive modulation communication with the local base station apparatus at the same time.
    • 本发明的基站装置中的分配部101基于从该通信终端装置发送的DRC信号来设定通信终端装置的发送信号的发送速度。 功率余量信息检测器117从解调器115产生的解调信号中检测功率余量信息,并且使用该功率余量信息,功率设定部118进行设定,以便给出接收信号特性 在每个通信终端设备中满足期望的质量。 使用设定的发送功率值,基站装置向通信终端装置发送所设定的发送速率的发送信号。 通过这种方式,可以抑制对与本地基站装置同时执行自适应调制通信的另一基站装置和通信终端装置进行自适应调制通信的通信终端装置的干扰。
    • 48. 发明授权
    • Multi-carrier transmission/reception apparatus
    • 多载波发送/接收装置
    • US07386055B2
    • 2008-06-10
    • US10468791
    • 2002-12-03
    • Minori MoritaAtsushi Sumasu
    • Minori MoritaAtsushi Sumasu
    • H04K1/10
    • H04B1/70735H04B1/7083H04L5/0021H04L5/0048H04L27/2656
    • A multicarrier radio communication technology that enables radio resources to be used effectively, interference-to be suppressed, and a cell search to be performed at high speed, in a multicarrier CDMA system. In this technology, a secondary synchronization code (S-SCH signal) for identifying the group of scrambling codes divided into groups beforehand is frequency multiplexed in a plurality of subcarriers. A secondary synchronization code is coded in the time direction. Subcarriers in which a secondary synchronization code is multiplexed are mutually separated and equally spaced. The number of subcarriers in which a secondary synchronization code is multiplexed can be set to a small value with respect to the total number of subcarriers. A secondary synchronization code is an orthogonal code. On the receiving side, a cell search is carried out using such a frequency multiplexed type S-SCH.
    • 一种多载波CDMA系统中的能够有效地使用无线资源,抑制干扰,以及高速执行小区搜索的多载波无线通信技术。 在该技术中,用于识别预先划分成组的扰码组的次同步码(S-SCH信号)在多个副载波中被频率复用。 次同步码在时间方向编码。 辅助同步码被复用的子载波相互分离并且等间隔。 辅助同步码多路复用的子载波的数量可以被设置为相对于子载波总数的小值。 次同步码是正交码。 在接收侧,使用这种频率复用型S-SCH进行小区搜索。
    • 49. 发明授权
    • Encoding device and decoding device
    • 编码设备和解码设备
    • US08429503B2
    • 2013-04-23
    • US12671188
    • 2008-07-29
    • Shutai OkamuraMasayuki OrihashiAtsushi Sumasu
    • Shutai OkamuraMasayuki OrihashiAtsushi Sumasu
    • H03M13/00
    • H03M13/1128H03M13/1102H03M13/1105H03M13/27H03M13/373H03M13/6356H03M13/6362H03M13/6516H04L1/0041H04L1/005H04L1/0057H04L1/0071
    • Disclosed are an encoding device and a decoding device which can effectively reduce the decoding failure frequency in LDPC encoding/decoding. A loss correction encoding device (120) includes a padding unit (121) which adds a padding packet to an information packet sequence; an interleave unit (122) which rearranges the padding packet and the information packet; and a loss correction encoding unit (123) which performs loss correction encoding for the packet string after the interleave. The interleave unit (122) rearranges the padding packet and the information packet according to variable nodes constituting a minimum stopping set of the inspection matrix which defines a low-density parity inspection code. The interleave unit (122) uses such a rearrangement pattern that avoids a loss correction failure by the minimum stopping set of the LDPC inspection matrix so as to reduce the probability of the loss correction failure by the minimum stopping set.
    • 公开了可以有效地降低LDPC编码/解码中的解码失败频率的编码装置和解码装置。 丢失校正编码装置(120)包括将填充分组添加到信息分组序列的填补单元(121) 交织单元(122),其重新排列所述填充分组和所述信息分组; 以及丢失校正编码单元(123),其在交织之后对分组串执行丢失校正编码。 交错单元(122)根据构成检查矩阵的最小停止集合的可变节点重新排列填充分组和信息分组,该检查矩阵定义了低密度奇偶校验检验码。 交错单元(122)使用这样的重排模式,通过LDPC检查矩阵的最小停止集合来避免丢失校正失败,从而通过最小停止集合来降低丢失校正失败的可能性。