公开(公告)号：US20100272022A1

公开(公告)日：2010-10-28

申请号：US12809925

申请日：2008-12-26

申请人： Takashi Iwai ,  Daichi Imamura ,  Yoshihiko Ogawa ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Tomofumi Takata

发明人： Takashi Iwai ,  Daichi Imamura ,  Yoshihiko Ogawa ,  Sadaki Futagi ,  Atsushi Matsumoto ,  Tomofumi Takata

IPC分类号： H04W40/00

CPC分类号： H04J13/22 ,  H04B1/7143 ,  H04J13/0062

摘要： A wireless communication terminal apparatus wherein the occurrences of inter-sequence interferences between a reference signal preceding a sequence hopping and a reference signal following the sequence hopping can be reduced so as to improve the randomizing effect achieved by the sequence hopping. In this apparatus, a sequence number deciding part (105) has a table in which the sequence lengths of Zadoff-Chu sequences used for reference signals are associated with the sequence numbers of Zadoff-Chu sequences used for reference signals of a slot #1 and with the sequence numbers of Zadoff-Chu sequences used for reference signals of a slot #2. In accordance with a sequence length according to a transmission bandwidth received from a decoding part (104), the sequence number deciding part (105) refers to the table to decide the sequence number of a Zadoff-Chu sequence. In the table of the sequence number deciding part (105), different hopping amounts are provided to a plurality of slot-#2-specific Zadoff-Chu sequences having different sequence lengths.

摘要翻译： 一种无线通信终端装置，其中可以减少序列跳变之前的参考信号与序列跳变之后的参考信号之间的序列间干扰的出现，以便改善由序列跳变获得的随机化效果。 在该装置中，序列号决定部（105）具有将用于参考信号的Zadoff-Chu序列的序列长度与用于时隙＃1的参考信号的Zadoff-Chu序列的序列号相关联的表， 其中Zadoff-Chu序列的序列号用于时隙＃2的参考信号。 根据从解码部（104）接收到的发送带宽的序列长度，序列号判定部（105）参照表来决定Zadoff-Chu序列的序列号。 在序列号决定部（105）的表中，向具有不同序列长度的多个时隙＃2特定的Zadoff-Chu序列提供不同的跳频量。

公开(公告)号：US20100111142A1

公开(公告)日：2010-05-06

申请号：US12531247

申请日：2008-03-14

申请人： Takashi Iwai ,  Daichi Imamura ,  Sadaki Futagi ,  Yoshihiko Ogawa ,  Tomofumi Takata ,  Atsushi Matsumoto

发明人： Takashi Iwai ,  Daichi Imamura ,  Sadaki Futagi ,  Yoshihiko Ogawa ,  Tomofumi Takata ,  Atsushi Matsumoto

IPC分类号： H04B1/707

CPC分类号： H04B1/692 ,  H04J13/0048 ,  H04J13/0059 ,  H04J13/0062 ,  H04J13/0074 ,  H04J13/14

摘要： Disclosed are a radio transmission device and a radio transmission method which can reduce a processing amount or a memory amount while maintaining the randomizing effect of other cell interference. When using as a reference signal, a ZC sequence of the sequence length uniquely correlated to a transmission bandwidth of a reference signal, as the transmission bandwidth becomes smaller and the sequence length of the ZC sequence becomes shorter, the sequence is switched at a shorter time interval and as the transmission bandwidth becomes greater and the sequence length of the ZC sequence becomes longer, the switching is performed at a longer time interval. Thus, a reference signal is generated by using the ZC sequence in accordance with the timing into which the reference signal transmission bandwidth and the sequence are switched.

摘要翻译： 公开了一种在保持其他小区干扰的随机化效果的同时可以减少处理量或存储量的无线传输装置和无线传输方法。 当使用参考信号时，随着发送带宽变小并且ZC序列的序列长度变短，与参考信号的传输带宽唯一相关的序列长度的ZC序列变短，所以在更短的时间内切换序列 间隔，并且随着传输带宽变大并且ZC序列的序列长度变长，则以更长的时间间隔进行切换。 因此，根据参考信号传输带宽和序列被切换到的定时，通过使用ZC序列来生成参考信号。

公开(公告)号：US10263744B2

公开(公告)日：2019-04-16

申请号：US13146611

申请日：2010-01-28

申请人： Takashi Iwai ,  Sadaki Futagi ,  Tomohumi Takata ,  Daichi Imamura ,  Yoshihiko Ogawa

发明人： Takashi Iwai ,  Sadaki Futagi ,  Tomohumi Takata ,  Daichi Imamura ,  Yoshihiko Ogawa

IPC分类号： H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04L25/03

摘要： Disclosed are a wireless transmitter and a reference signal transmission method that improve channel estimation accuracy. In a terminal (100), which transmits a reference signal using n (n is a non-negative integer 2 or greater) band blocks (which correspond to clusters here), which are disposed with spaces therebetween in a frequency direction, a reference signal controller (106) switches the reference signal formation method of a reference signal generator (107) between a first formation method and a second formation method based on the number (n) of band blocks. In addition, a threshold value setting unit (105) adjusts a switching threshold value based on the frequency spacing between band blocks. Thus, the reference signal formation method can be selected with good accuracy and, as a result, channel estimation accuracy is further improved.

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：US20110205966A1

公开(公告)日：2011-08-25

申请号：US12989694

申请日：2009-06-16

申请人： Takashi Iwai ,  Katsuhiko Hiramatsu ,  Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Atsushi Sumasu ,  Yoshihiko Ogawa ,  Sadaki Futagi

发明人： Takashi Iwai ,  Katsuhiko Hiramatsu ,  Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Atsushi Sumasu ,  Yoshihiko Ogawa ,  Sadaki Futagi

IPC分类号： H04W4/00

CPC分类号： H04L27/0008 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/0643 ,  H04B7/0689 ,  H04L1/0021 ,  H04L1/0029 ,  H04L5/0007 ,  H04L27/2636 ,  H04W52/367 ,  H04W52/42

摘要： Provided are a radio transmission device and a radio transmission method which can suppress lowering of the throughput caused by switching between the single carrier communication method and the multi-carrier communication method while suppressing increase of the signaling amount. A PHR threshold value setting unit (116) sets a threshold value Y1 at a position greater by a predetermined value than the PHR at which the throughput performance of the SC-FDMA coincides with that of the OFDMA. A trigger signal transmission judgment unit (117) judges that a mobile station transmits a trigger signal for switching from the OFDMA to the SC-FDMA if the PHR in the OFDMA communication method is lower than the threshold value Y1.

摘要翻译： 提供一种能够抑制在单载波通信方式和多载波通信方式之间切换的吞吐量的降低同时抑制信令量的增加的无线传输装置和无线传输方法。 PHR阈值设置单元（116）将阈值Y1设置在比SCDMA的吞吐量性能与OFDMA的吞吐量性能一致的PHR更大预定值的位置处。 如果OFDMA通信方法中的PHR低于阈值Y1，则触发信号发送判断单元（117）判断移动站发送用于从OFDMA切换到SC-FDMA的触发信号。

公开(公告)号：US20100284394A1

公开(公告)日：2010-11-11

申请号：US12811189

申请日：2008-12-26

申请人： Tomofumi Takata ,  Daichi Imamura ,  Seigo Nakao ,  Sadaki Futagi ,  Takashi Iwai ,  Yoshihiko Ogawa

发明人： Tomofumi Takata ,  Daichi Imamura ,  Seigo Nakao ,  Sadaki Futagi ,  Takashi Iwai ,  Yoshihiko Ogawa

IPC分类号： H04J1/00

CPC分类号： H04L5/0048 ,  H04B7/0632 ,  H04J11/00 ,  H04J13/0003 ,  H04J13/0055 ,  H04J13/0059 ,  H04J13/0074 ,  H04J13/10 ,  H04L5/0007 ,  H04L5/0057 ,  H04L25/0204 ,  H04L25/0208 ,  H04L25/0228 ,  H04L27/2695 ,  H04W72/0413 ,  H04W72/0446 ,  H04W72/082 ,  H04W88/02

摘要： It is possible to provide a radio communication terminal device and a radio transmission method which can improve reception performance of a CQI and a reference signal. A phase table storage unit (112) stores a phase table which correlates the amount of cyclic shift to complex coefficients {w1, W2} to be multiplied on the reference signal. A complex coefficient multiplication unit (113) reads out a complex coefficient corresponding to the amount of cyclic shift indicated by resource allocation information, from the phase table storage unit (112) and multiplies the read-out complex coefficient on the reference signal so as to change the phase relationship between the reference signals in a slot.

摘要翻译： 可以提供可以提高CQI的接收性能和参考信号的无线通信终端装置和无线发送方法。 相位表存储单元（112）存储将循环移位量与要参考信号相乘的复系数{w1，W2}相关的相位表。 复系数乘法单元（113）从相位表存储单元（112）读出与由资源分配信息指示的循环移位量相对应的复数系数，并将读出的复数系数与参考信号相乘，从而 改变一个插槽中的参考信号之间的相位关系。

公开(公告)号：US08483134B2

公开(公告)日：2013-07-09

申请号：US12989694

申请日：2009-06-16

申请人： Takashi Iwai ,  Katsuhiko Hiramatsu ,  Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Atsushi Sumasu ,  Yoshihiko Ogawa ,  Sadaki Futagi

发明人： Takashi Iwai ,  Katsuhiko Hiramatsu ,  Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Atsushi Sumasu ,  Yoshihiko Ogawa ,  Sadaki Futagi

IPC分类号： H04W4/00

CPC分类号： H04L27/0008 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/0643 ,  H04B7/0689 ,  H04L1/0021 ,  H04L1/0029 ,  H04L5/0007 ,  H04L27/2636 ,  H04W52/367 ,  H04W52/42

摘要： A radio transmission apparatus and a radio transmission method suppress lowering of the throughput caused by switching between the single carrier communication method and the multi-carrier communication method while suppressing increase in the signaling amount. A PHR threshold value setter sets a threshold value at a position greater by a predetermined value than the PHR at which the throughput performance of the SC-FDMA coincides with that of the OFDMA. A trigger signal transmission judger judges that a mobile station transmits a trigger signal for switching from the OFDMA to the SC-FDMA if the PHR in the OFDMA communication method is lower than the threshold value.

摘要翻译： 无线发送装置和无线发送方法抑制在单载波通信方式与多载波通信方式之间的切换引起的吞吐量的下降，同时抑制信令量的增加。 PHR阈值设定器在比SCDMA的吞吐量性能与OFDMA的吞吐量性能一致的PHR大预定值的位置处设定阈值。 如果OFDMA通信方法中的PHR低于阈值，则触发信号传输判断器判断移动站发送用于从OFDMA切换到SC-FDMA的触发信号。

公开(公告)号：US20120026953A1

公开(公告)日：2012-02-02

申请号：US13148890

申请日：2010-02-12

申请人： Yoshihiko Ogawa ,  Akihiko Nishio ,  Daichi Imamura ,  Seigo Nakao ,  Masayuki Hoshino ,  Takashi Iwai ,  Sadaki Futagi

发明人： Yoshihiko Ogawa ,  Akihiko Nishio ,  Daichi Imamura ,  Seigo Nakao ,  Masayuki Hoshino ,  Takashi Iwai ,  Sadaki Futagi

IPC分类号： H04W72/04

CPC分类号： H04W72/1289 ,  H04L1/00 ,  H04L1/0004 ,  H04L1/0041 ,  H04L1/0045 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/0041 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0092 ,  H04L27/2601 ,  H04L27/2607 ,  H04L27/2614 ,  H04L27/2636 ,  H04L27/2647 ,  H04W28/06 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/0466 ,  H04W72/0473 ,  H04W72/12 ,  H04W72/1268 ,  H04W84/042

摘要： Disclosed are a wireless communication base station device, a wireless communication terminal device, and a wireless communication method with which the amount of signaling is reduced while maintaining a high scheduling gain. A judgment unit (117) stores in advance a correspondence between the number of code words and the number of clusters to reduce the maximum value for the number of clusters allocated to each terminal as the number of code words increases, and thus determines the maximum value for the number of clusters based on the number of code words acquired. Based on the number of code words for a transmission signal from a terminal, an estimated value for the reception quality that is output by an estimation unit (109), and the maximum value for the number of clusters that is output by the judgment unit (117), a scheduling unit (118) schedules the allocation of the transmission signal transmitted by each terminal to a transmission band frequency (frequency resource) so as not to exceed the maximum value for the number of clusters.

摘要翻译： 公开了一种无线通信基站装置，无线通信终端装置和无线通信方法，在保持高调度增益的同时，信令量减少。 判断单元117预先存储代码字数与簇数之间的对应关系，以便随着码字数量的增加而减小分配给每个终端的簇的数量的最大值，从而确定最大值 对于基于所获取的代码字数的集群数。 基于来自终端的发送信号的码字的数量，由估计单元（109）输出的接收质量的估计值和由判断单元（109）输出的群集数的最大值 117），调度单元（118）将由各终端发送的发送信号的分配调度为发送频带频率（频率资源），以使其不超过簇的数量的最大值。

公开(公告)号：US20110299496A1

公开(公告)日：2011-12-08

申请号：US13201767

申请日：2010-02-17

申请人： Takashi Iwai ,  Sadaki Futagi ,  Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Yoshihiko Ogawa

发明人： Takashi Iwai ,  Sadaki Futagi ,  Daichi Imamura ,  Akihiko Nishio ,  Seigo Nakao ,  Yoshihiko Ogawa

IPC分类号： H04W72/04

CPC分类号： H04W72/0453 ,  H04L5/0037 ,  H04L5/0041 ,  H04L5/006 ,  H04L5/0064 ,  H04L5/0091 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/08

摘要： A scheduling apparatus and a scheduling method, wherein the amount of signaling for frequency resource allocation information can be reduced while maintaining system throughput performance. In a base station apparatus (100), a scheduling section (113) allocates frequency resources to frequency allocation target terminals based on set frequency allocation units, and a frequency allocation parameter setting section (112) adjusts the set frequency allocation units set in the scheduling section (113) based on cluster numbers. Due to this, in each cluster number, frequency resources can be allocated based on the most suitable frequency allocation units with respect to the signaling bit number. As a result, the amount of signaling for frequency resource allocation information can be reduced. Further, system throughput can be maintained by making the cluster number, which is a parameter having little effect on system throughput, a setting parameter for frequency allocation units.

摘要翻译： 一种调度装置和调度方法，其中可以在维持系统吞吐量性能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）基于设定的频率分配单位向频率分配对象终端分配频率资源，频率分配参数设定部（112）对调度中设定的设定频率分配单位进行调整 （113）基于簇号。 因此，在每个簇号中，可以基于针对信令比特数的最合适的频率分配单元来分配频率资源。 结果，可以减少用于频率资源分配信息的信令量。 此外，可以通过使作为对系统吞吐量影响不大的参数的簇号，频率分配单元的设定参数来维持系统吞吐量。

公开(公告)号：US20110287797A1

公开(公告)日：2011-11-24

申请号：US13146611

申请日：2010-01-28

申请人： Takashi Iwai ,  Sadaki Futagi ,  Tomohumi Takata ,  Daichi Imamura ,  Yoshihiko Ogawa

发明人： Takashi Iwai ,  Sadaki Futagi ,  Tomohumi Takata ,  Daichi Imamura ,  Yoshihiko Ogawa

IPC分类号： H04W72/04

CPC分类号： H04L5/0048 ,  H04L25/022 ,  H04L25/0226 ,  H04L25/03159 ,  H04L27/2613

摘要： Disclosed are a wireless transmitter and a reference signal transmission method that improve channel estimation accuracy. In a terminal (100), which transmits a reference signal using n (n is a non-negative integer 2 or greater) band blocks (which correspond to clusters here), which are disposed with spaces therebetween in a frequency direction, a reference signal controller (106) switches the reference signal formation method of a reference signal generator (107) between a first formation method and a second formation method based on the number (n) of band blocks. In addition, a threshold value setting unit (105) adjusts a switching threshold value based on the frequency spacing between band blocks. Thus, the reference signal formation method can be selected with good accuracy and, as a result, channel estimation accuracy is further improved.

摘要翻译： 公开了一种提高信道估计精度的无线发射机和参考信号传输方法。 在使用n（n为非负整数2以上）的频带（与此相对应的集群）发送参考信号的终端（100）中，在频率方向上设置有空格的参考信号 控制器（106）基于频带块的数量（n）在第一形成方法和第二形成方法之间切换参考信号发生器（107）的参考信号形成方法。 此外，阈值设定部（105）根据频带间的频率间隔调整切换阈值。 因此，可以以高精度选择参考信号形成方法，结果进一步提高了信道估计精度。