公开(公告)号：US07697466B2

公开(公告)日：2010-04-13

申请号：US10398484

申请日：2002-07-15

申请人： Kazunari Hashimoto ,  Sadaki Futagi ,  Kenichi Miyoshi

发明人： Kazunari Hashimoto ,  Sadaki Futagi ,  Kenichi Miyoshi

IPC分类号： H04B7/216

CPC分类号： H04L1/0028 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0035

摘要： At a base station apparatus, known pilot signals for use in channel estimation are transmitted, and in addition thereto MCS pilot signals that are used to perform adaptive modulations respectively corresponding to a plurality of modulation schemes are multiplexed and output. A mobile station apparatus dispreads the respective MCS signals out of the multiplex signal, compares these to known symbols patterns, and sends the MCS pilot signals that show a matching relationship to the base station apparatus as a mobile station reception result. Upon receiving the mobile station reception result from the mobile station apparatus, the base station apparatus selects the modulation scheme of the optimum modulation level for the downlink signals. This configuration makes it possible to switch the modulation schemes in an accurate and simple way.

摘要翻译： 在基站装置中，发送用于信道估计的已知导频信号，并且除了分别对应于多个调制方式进行自适应调制的MCS导频信号进行复用和输出外。 移动站装置从多路复用信号中分出各个MCS信号，将其与已知符号模式进行比较，并将与基站装置相对应的MCS导频信号作为移动台接收结果发送。 基站装置从移动台装置接收到移动台接收结果时，选择下行链路信号的最佳调制等级的调制方式。 这种配置使得可以以准确和简单的方式切换调制方案。

公开(公告)号：US20120063469A1

公开(公告)日：2012-03-15

申请号：US13256591

申请日：2010-03-15

申请人： Takashi Iwai ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa ,  Yoshihiko Ogawa ,  Sadaki Futagi

发明人： Takashi Iwai ,  Akihiko Nishio ,  Daichi Imamura ,  Kenichi Miyoshi ,  Megumi Ichikawa ,  Yoshihiko Ogawa ,  Sadaki Futagi

IPC分类号： H04L12/66

CPC分类号： H04W72/085 ,  H04W72/042

摘要： Provided are a scheduling device and a scheduling method, in which the amount of signaling of frequency resource allocation information can be reduced while the system throughput is maintained. In a base station device (100), a scheduling unit (113) selects, as an allocation resource for a terminal to which resources are to be allocated, at most one cluster band in each of a plurality of allocatable ranges set within a system band and generates allocation resource information including information relating to the selected cluster, and an encoding unit (114), a modulation unit (115), and a transmission RF unit (116) which serve as a transmission means transmit the allocation resource information generated by the scheduling unit (113) to the terminal to which the resources are to be allocated. Among the plurality of allocatable ranges, a first allocatable range is the entire system band, while a second allocatable range is a low frequency-side band or a high frequency-side band when the system band is divided into halves.

摘要翻译： 提供了一种调度装置和调度方法，其中可以在保持系统吞吐量的同时减少频率资源分配信息的信令量。 在基站装置（100）中，调度部（113）在系统频带内设定的多个可分配范围的每一个中，选择作为分配资源的终端的分配资源， 并生成包括与所选择的群集有关的信息的分配资源信息，作为发送单元的编码单元（114），调制单元（115）和发送RF单元（116）发送由 调度单元（113）发送到要向其分配资源的终端。 在多个可分配范围中，第一可分配范围是整个系统频带，而当系统频带被分成两半时，第二可分配范围是低频侧频带或高频侧频带。

公开(公告)号：US20090239484A1

公开(公告)日：2009-09-24

申请号：US11908093

申请日：2006-03-10

申请人： Kenichi Miyoshi ,  Akihiko Nishio ,  Takashi Iwai ,  Sadaki Futagi ,  Katsuhiko Hiramatsu ,  Daichi Imamura ,  Takashi Aramaki

发明人： Kenichi Miyoshi ,  Akihiko Nishio ,  Takashi Iwai ,  Sadaki Futagi ,  Katsuhiko Hiramatsu ,  Daichi Imamura ,  Takashi Aramaki

IPC分类号： H04B1/02 ,  G06F3/033

CPC分类号： H04L27/2666 ,  H04L25/03159 ,  H04L27/2607 ,  H04L27/2646 ,  H04L27/2647 ,  H04L27/2662

摘要： A radio receiver apparatus that can effectively utilize GI to improve the reception quality. In this apparatus, a data extracting part (104) extracts a data portion of a direct wave from a signal subjected to a radio reception process by a received RF part (102). A GI extracting part (107) extracts, from the signal subjected to the radio reception process by the received RF part (102), GI having a length determined by an extracted GI length deciding part (106). The extracted GI is adjusted by a data position adjusting part (108) such that its rear end coincides with the read end of the extracted data portion. A combining part (109) combines the extracted data portion with the GI the data position of which has been adjusted. The combined signal is then supplied to a frequency axis equalizing part (110), which equalizes the signal distortions of the combined signal on the frequency axis.

摘要翻译： 能够有效地利用GI来提高接收质量的无线接收装置。 在该装置中，数据提取部（104）从接收到的RF部（102）的无线接收处理的信号中提取直接波的数据部分。 GI提取部分（107）从接收到的RF部分（102）的经过无线电接收处理的信号中提取具有由提取的GI长度确定部分（106）确定的长度的GI。 提取的GI由数据位置调整部（108）调整，使得其后端与提取的数据部分的读取端一致。 组合部分（109）将提取的数据部分与其数据位置已被调整的GI组合。 然后将组合的信号提供给频率轴均衡部分（110），其使得频率轴上的组合信号的信号失真均衡。

公开(公告)号：US20090233598A1

公开(公告)日：2009-09-17

申请号：US11917758

申请日：2006-06-15

申请人： Masaru Fukuoka ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Kenichi Miyoshi ,  Akihiko Nishio

发明人： Masaru Fukuoka ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Kenichi Miyoshi ,  Akihiko Nishio

IPC分类号： H04W36/20

CPC分类号： H04B7/0854 ,  H04B1/7107 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/08 ,  H04L25/0224 ,  H04L27/2602 ,  H04L27/2626 ,  H04L27/2647 ,  H04W52/48

摘要： There is provided a mobile station device capable of effectively performing interference suppression symbol synthesis while suppressing the lowering of the transfer rate when using the repetition technique in multi-carrier communication. In the mobile station device (100), when the interference level exceeds a threshold value, a switching control unit (110) controls a switch (109) to connect a P/S unit (106) to a weight multiplication unit (113) and controls a switch (111) to connect a channel estimation unit (108) to a weight calculation unit (112). The weight calculation unit (112) calculates an interference suppression weight based on MMSE from a pilot symbol and a channel estimation value. The weight multiplication unit (113) multiplies a data symbol by the interference suppression weight. A synthesis unit (114) synthesizes the data symbol multiplied by the interference suppression weight in repetition unit.

摘要翻译： 提供了一种能够在多载波通信中使用重复技术的同时抑制传输速率降低的同时有效地进行干扰抑制符号合成的移动站装置。 在移动站装置（100）中，当干扰电平超过阈值时，切换控制单元（110）控制开关（109）将P / S单元（106）连接到加权乘法单元（113），并且 控制开关（111）将信道估计单元（108）连接到权重计算单元（112）。 权重计算单元（112）根据来自导频符号的MMSE和信道估计值来计算干扰抑制加权。 加权乘法单元（113）将数据符号乘以干扰抑制权重。 合成单元（114）以重复单位合成乘以干扰抑制权重的数据符号。

公开(公告)号：US20090046604A1

公开(公告)日：2009-02-19

申请号：US11813582

申请日：2006-01-11

申请人： Atsushi Matsumoto ,  Sadaki Futagi ,  Kenichi Miyoshi ,  Daichi Imamura ,  Akihiko Nishio

发明人： Atsushi Matsumoto ,  Sadaki Futagi ,  Kenichi Miyoshi ,  Daichi Imamura ,  Akihiko Nishio

IPC分类号： H04J3/00 ,  H04L7/00

CPC分类号： H04L5/1469 ,  H04L5/023 ,  H04L27/2646 ,  H04L27/2655

摘要： A wireless communication method for improving the transmission efficiency in an upstream communication in OFDMA-TDD system or the like. An upstream transmission timing control part (108), which employs this method, controls, based on the OFDMA-TDD scheme, the transmission timings of a mobile station (#p) and a mobile station (#M) communicating with a base station (100). The upstream transmission timing control part (108) acquires information about the propagation delay times τp and τM of the mobile station (#p) and mobile station (#M). When the propagation delay time τp is shorter than the propagation delay time τM, the upstream transmission timing control part (108) decides the transmission timings of the mobile station (#p) and mobile station (#M) such that the timing at which the base station (100) starts receiving symbols from the mobile station (#p) in an upstream section is earlier, by αp times an OFDM symbol length (L) (where αp is a natural number), than the timing at which the base station (100) starts receiving symbols from the mobile station (#M) in the same section.

摘要翻译： 一种用于在OFDMA-TDD系统中提高上行通信中的传输效率的无线通信方法等。 使用该方法的上行发送定时控制部（108）基于OFDMA-TDD方式，控制与基站通信的移动台（#p）和移动台（#M）的发送定时 100）。 上游发送定时控制部（108）获取关于移动台（#p）和移动台（#M）的传播延迟时间taup和tauM的信息。 当传播延迟时间taup比传播延迟时间ττ短时，上游发送定时控制部（108）决定移动台（＃p）和移动台（＃M）的发送定时， 基站（100）开始在上游部分中从移动站（#p）开始接收符号的时间早于基站的时间（alphap是自然数） （100）开始从同一部分的移动台（#M）接收符号。

公开(公告)号：US08908655B2

公开(公告)日：2014-12-09

申请号：US12298693

申请日：2007-04-26

申请人： Sadaki Futagi ,  Takashi Iwai ,  Daichi Imamura ,  Kenichi Miyoshi

发明人： Sadaki Futagi ,  Takashi Iwai ,  Daichi Imamura ,  Kenichi Miyoshi

IPC分类号： H04J3/00 ,  H04J13/00 ,  H04L1/18 ,  H04W72/06 ,  H04W74/08

CPC分类号： H04J13/0059 ,  H04L1/1893 ,  H04W72/06 ,  H04W74/0866

摘要： Provided is a mobile station device capable of performing RACH transmission with a small amount of resources. In this device, a RACH generating unit (111) is formed by a signature selection unit (112) and a modulation unit (113). A RACH signal is generated as follows. That is, according to inputted RACH re-transmission quantity information, the signature selection unit (112) selects one code sequence as a signature from a plurality of different code sequences. The modulation unit (113) modulates the signature (code sequence) and generates a RACH signal. A multiplexing unit (116) time-multiplexes the RACH signal inputted from the modulation unit (113) and user data inputted from the modulation unit (115). A radio transmission unit (117) subjects the multiplexed signal to radio processing and transmits it via an antenna (121).

摘要翻译： 提供能够以少量的资源进行RACH传输的移动站装置。 在该装置中，由签名选择部（112）和调制部（113）构成RACH生成部（111）。 如下生成RACH信号。 也就是说，根据输入的RACH重传量信息，签名选择部（112）从多个不同的代码序列中选择一个代码序列作为签名。 调制单元（113）调制签名（代码序列）并产生RACH信号。 复用单元（116）对从调制单元（113）输入的RACH信号和从调制单元（115）输入的用户数据进行时分复用。 无线发送单元（117）对多路复用信号进行无线处理，经由天线（121）发送。

公开(公告)号：US08493961B2

公开(公告)日：2013-07-23

申请号：US11813582

申请日：2006-01-11

申请人： Atsushi Matsumoto ,  Sadaki Futagi ,  Kenichi Miyoshi ,  Daichi Imamura ,  Akihiko Nishio

发明人： Atsushi Matsumoto ,  Sadaki Futagi ,  Kenichi Miyoshi ,  Daichi Imamura ,  Akihiko Nishio

IPC分类号： H04J3/06

CPC分类号： H04L5/1469 ,  H04L5/023 ,  H04L27/2646 ,  H04L27/2655

摘要： A wireless communication method for improving the transmission efficiency in an upstream communication in OFDMA-TDD system or the like. An upstream transmission timing control part (108), which employs this method, controls, based on the OFDMA-TDD scheme, the transmission timings of a mobile station (#p) and a mobile station (#M) communicating with a base station (100). The upstream transmission timing control part (108) acquires information about the propagation delay times τp and τM of the mobile station (#p) and mobile station (#M). When the propagation delay time τp is shorter than the propagation delay time τM, the upstream transmission timing control part (108) decides the transmission timings of the mobile station (#p) and mobile station (#M) such that the timing at which the base station (100) starts receiving symbols from the mobile station (#p) in an upstream section is earlier, by αp times an OFDM symbol length (L) (where αp is a natural number), than the timing at which the base station (100) starts receiving symbols from the mobile station (#M) in the same section.

摘要翻译： 一种用于在OFDMA-TDD系统中提高上行通信中的传输效率的无线通信方法等。 使用该方法的上行发送定时控制部（108）基于OFDMA-TDD方式，控制与基站通信的移动台（#p）和移动台（#M）的发送定时 100）。 上游发送定时控制部（108）获取关于移动台（#p）和移动台（#M）的传播延迟时间taup和tauM的信息。 当传播延迟时间taup比传播延迟时间ττ短时，上游发送定时控制部（108）决定移动台（＃p）和移动台（＃M）的发送定时， 基站（100）开始在上游部分中从移动站（#p）开始接收符号的时间早于基站的时间（alphap是自然数） （100）开始从同一部分的移动台（#M）接收符号。

公开(公告)号：US20110041045A1

公开(公告)日：2011-02-17

申请号：US12911496

申请日：2010-10-25

申请人： Takashi Iwai ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Kenichi Miyoshi

发明人： Takashi Iwai ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Kenichi Miyoshi

IPC分类号： H03M13/09 ,  G06F11/10

CPC分类号： H04L1/1819 ,  H04L1/0015 ,  H04L1/1825 ,  H04W52/16 ,  H04W52/221 ,  H04W52/247 ,  H04W52/367

摘要： A transmitting apparatus and a transmitting method wherein the systematic bit reception quality can be improved and the throughput performance can be improved. An IR parameter control part (101) controls, based on the number of retransmissions, the ratio of systematic bits to parity bits in mapping them to packets, and controls to map a parity bit to an initially transmitted packet, while mapping a systematic bit to a retransmitted packet. An encoding part (102) generates the systematic bits and parity bits and maps them to the packets in accordance with the IR parameters. A transmission power calculating part (105) calculates, based on reception quality information of the initially transmitted packet fed back from a receiving end, the transmission power of the transmitted packet to which the systematic bit is mapped. A transmission power control part (106) controls the transmission power of the retransmitted packet such that it is equal to the transmission power as calculated by the transmission power calculating part (105).

摘要翻译： 一种发送装置和发送方法，其中可以提高系统比特接收质量并且可以提高吞吐量性能。 IR参数控制部分（101）基于重发次数来控制系统比特与奇偶校验位的比率，将它们映射到分组，并且控制将奇偶校验位映射到初始发送的分组，同时将系统比特映射到 重发数据包。 编码部分（102）生成系统比特和奇偶校验比特，并根据IR参数将它们映射到分组。 发送功率计算部（105）基于从接收端反馈的初始发送分组的接收质量信息，计算发送的分组的发送功率，系统比特被映射到该发送功率。 发送功率控制部（106）控制重发分组的发送功率，使其等于由发送功率计算部（105）计算出的发送功率。

公开(公告)号：US20110002321A1

公开(公告)日：2011-01-06

申请号：US12882032

申请日：2010-09-14

申请人： Takashi Iwai ,  Daichi Imamura ,  Kenichi Miyoshi ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Tomofumi Takata

发明人： Takashi Iwai ,  Daichi Imamura ,  Kenichi Miyoshi ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Tomofumi Takata

IPC分类号： H04B7/216

CPC分类号： H04J13/0055 ,  H04J13/0062 ,  H04J13/0066

摘要： Provided are a radio transmission device and a radio transmission method, which prevent the deterioration of a preamble detecting performance while reducing the collision probability of a RACH. In this radio transmission device, a Signature table storage unit (103) divides the magnitudes of transmission loss levels into individual levels corresponding to the distances from a base station, to cause CAZAC series and circulation shift quantities to correspond to each other at the individual levels, and is provided with a table containing a plurality of Signatures created from the CAZAC series and the circulation shift quantities caused to correspond to each other. A Signature selecting unit (104) selects one of the corresponding Signatures at random from the Signature table storage unit (103), on the basis of the magnitude of the transmission loss level outputted from a transmission loss level deciding unit (102). A RACH signal generating unit (105) generates the RACH signal with the Signature selected.

摘要翻译： 提供一种无线传输装置和无线传输方法，其防止前导码检测性能的劣化，同时降低RACH的冲突概率。 在该无线发送装置中，签名表存储部（103）将传输损耗级别的大小划分为与基站的距离对应的各个级别，使得CAZAC序列和循环移位量在各个级别彼此对应 并且设置有包含从CAZAC系列创建的多个签名和导致彼此对应的循环移位量的表。 签名选择单元（104）根据从传输损失等级决定单元（102）输出的传输损耗电平的大小，从签名表存储单元（103）中随机选择一个对应的签名。 RACH信号生成单元（105）在选择了签名的情况下生成RACH信号。

公开(公告)号：US08738998B2

公开(公告)日：2014-05-27

申请号：US12911496

申请日：2010-10-25

申请人： Takashi Iwai ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Kenichi Miyoshi

发明人： Takashi Iwai ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Kenichi Miyoshi

IPC分类号： G06F11/10

CPC分类号： H04L1/1819 ,  H04L1/0015 ,  H04L1/1825 ,  H04W52/16 ,  H04W52/221 ,  H04W52/247 ,  H04W52/367

摘要： A transmitting apparatus and a transmitting method wherein the systematic bit reception quality can be improved and the throughput performance can be improved. An IR parameter control part (101) controls, based on the number of retransmissions, the ratio of systematic bits to parity bits in mapping them to packets, and controls to map a parity bit to an initially transmitted packet, while mapping a systematic bit to a retransmitted packet. An encoding part (102) generates the systematic bits and parity bits and maps them to the packets in accordance with the IR parameters. A transmission power calculating part (105) calculates, based on reception quality information of the initially transmitted packet fed back from a receiving end, the transmission power of the transmitted packet to which the systematic bit is mapped. A transmission power control part (106) controls the transmission power of the retransmitted packet such that it is equal to the transmission power as calculated by the transmission power calculating part (105).

摘要翻译： 一种发送装置和发送方法，其中可以提高系统比特接收质量，并且可以提高吞吐量性能。 IR参数控制部分（101）基于重发次数来控制系统比特与奇偶校验位的比率，将它们映射到分组，并且控制将奇偶校验位映射到初始发送的分组，同时将系统比特映射到 重发数据包。 编码部分（102）生成系统比特和奇偶校验比特，并根据IR参数将它们映射到分组。 发送功率计算部（105）基于从接收端反馈的初始发送分组的接收质量信息，计算发送的分组的发送功率，系统比特被映射到该发送功率。 发送功率控制部（106）控制重传分组的发送功率，使其等于由发送功率计算部（105）计算出的发送功率。