公开(公告)号：US08265025B2

公开(公告)日：2012-09-11

申请号：US12442475

申请日：2007-09-26

申请人： Daichi Imamura ,  Sadaki Futagi ,  Masaru Fukuoka ,  Takashi Iwai ,  Atsushi Matsumoto

发明人： Daichi Imamura ,  Sadaki Futagi ,  Masaru Fukuoka ,  Takashi Iwai ,  Atsushi Matsumoto

IPC分类号： H04J4/00

CPC分类号： H04W74/0833 ,  H04W72/042 ,  H04W74/00 ,  H04W74/006 ,  H04W74/008 ,  H04W74/0866

摘要： Disclosed is a radio transmission device and a radio transmission method which reduces the RACH conflict ratio and improve the RACH detection characteristic. When the device and the method are used: as the number of signature numbers allocated for UE by the network side increases, the condition for allocating a signature by UE itself is mitigated and an expectation value which is a statistic average value of the RA quantity using the signature allocated by UE for itself is decreased; and as the number of signature numbers allocated for UE by the network side decreases, the condition for allocating a signature by UE itself is limited and an expectation value of the RA quantity using the signature allocated by UE for itself is increased.

摘要翻译： 公开了一种降低RACH冲突比并提高RACH检测特性的无线传输装置和无线传输方法。 当使用设备和方法时：随着网络侧为UE分配的签名号码的数量增加，UE本身分配签名的条件得到缓解，作为RA数量的统计平均值的期望值使用 UE自身分配的签名减少; 并且由于由网络侧为UE分配的签名号码的数量减少，所以UE本身分配签名的条件受到限制，并且使用由UE本身分配的签名的RA数量的期望值增加。

公开(公告)号：US08149727B2

公开(公告)日：2012-04-03

申请号：US12088641

申请日：2006-09-29

申请人： Sadaki Futagi ,  Daichi Imamura ,  Atsushi Matsumoto ,  Takashi Iwai

发明人： Sadaki Futagi ,  Daichi Imamura ,  Atsushi Matsumoto ,  Takashi Iwai

IPC分类号： H04L12/26

CPC分类号： H04W52/262 ,  H04L1/0003 ,  H04L1/0004 ,  H04L1/0005 ,  H04L1/0009 ,  H04L1/001 ,  H04L1/0011 ,  H04L1/0016 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/0058 ,  H04L5/006 ,  H04L27/2614 ,  H04W52/267 ,  H04W72/042 ,  H04W72/08 ,  Y10S370/914

摘要： Provided is a communication device, which is enabled to improve the throughput of a communication system by reducing the difference of a transmission power between an SCCH and an SDCH thereby to satisfy the required quality of a PAPR. In this device, an MCS selection unit (111) of a transmission unit (110) decides, with reference to a CQI lookup table, an MCS pattern (MCS1) of the SDCH, an MCS pattern (MCS2) of the SCCH and information (multiplex information) on multiplex positions on the time axes of those two channels, on the basis of the CQI information. On the basis of the MCS2 and the MCS1, encoding modulation units (112 and 113) perform encoding and modulating operations. According to the multiplex information, a channel multiplexing unit (114) time-division multiplexes the SCCH and the SDCH thereby to generate a transmission signal.

摘要翻译： 提供了一种通信装置，其能够通过减小SCCH和SDCH之间的发送功率的差异来提高通信系统的吞吐量，从而满足PAPR的所需质量。 在该装置中，发送部（110）的MCS选择部（111）参照CQI查找表，决定SDCH的MCS模式（MCS1），SCCH的MCS模式（MCS2）和信息（ 多路复用信息），根据CQI信息，对这两个信道的时间轴上的多路复用位置进行复用。 基于MCS2和MCS1，编码调制单元（112和113）进行编码和调制操作。 根据多路复用信息，信道复用单元（114）对SCCH和SDCH进行时分复用，从而生成发送信号。

公开(公告)号：US20120064837A1

公开(公告)日：2012-03-15

申请号：US13299249

申请日：2011-11-17

申请人： Daichi Imamura ,  Takashi Iwai ,  Kazunori Inogai ,  Sadaki Futagi ,  Atsushi Matsumoto

发明人： Daichi Imamura ,  Takashi Iwai ,  Kazunori Inogai ,  Sadaki Futagi ,  Atsushi Matsumoto

IPC分类号： H04B1/38

CPC分类号： H04W72/0446 ,  H04J13/0062 ,  H04J13/0066 ,  H04J13/22 ,  H04J2013/0096 ,  H04L5/0053 ,  H04W72/005 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0466

摘要： Disclosed are a sequence report method and a sequence report device for reducing a signaling amount for reporting a Zadoff-Chu sequence or a GCL sequence allocated for a cell. Indexes starting at 1 are correlated to different ZC sequences and are allocated for cells so that the indexes are continuous. When such ZC sequences are reported from BS to UE, a start index indicating the start of the continuous indexes is combined with the number of allocated sequences and they are reported as allocation sequence information by a report channel. The UE and the BS share the correlation between the ZC sequences and the indexes and the UE identifies a usable sequence number according to the correlation and the allocation sequence information reported from the BS.

摘要翻译： 公开了一种用于减少用于报告分配给小区的Zadoff-Chu序列或GCL序列的信令量的序列报告方法和序列报告装置。 从1开始的索引与不同的ZC序列相关，并且被分配给单元，使得索引是连续的。 当从BS向UE报告这样的ZC序列时，将指示连续索引的开始的开始索引与分配的序列的数量组合，并且通过报告信道被报告为分配序列信息。 UE和BS共享ZC序列和索引之间的相关性，并且UE根据从BS报告的相关性和分配顺序信息来标识可用序列号。

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。

公开(公告)号：US20100246559A1

公开(公告)日：2010-09-30

申请号：US12295260

申请日：2007-03-29

申请人： Yoshihiko Ogawa ,  Daichi Imamura ,  Ayako Horiuchi ,  Sadaki Futagi

发明人： Yoshihiko Ogawa ,  Daichi Imamura ,  Ayako Horiuchi ,  Sadaki Futagi

IPC分类号： H04J3/00

CPC分类号： H04W72/1289 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04L5/0085 ,  H04L5/023 ,  H04W88/085

摘要： A radio communication base station device can efficiently obtain a multiuser diversity gain from frequency scheduling while reducing the amount of a reference signal occupying an uplink. In the device, a grouping section (109) divides a plurality of RBs (Resource Blocks) into a plurality of RB groups. An RB group control unit (108) performs a control to change the correspondence relationship between the RBs and the RB groups with time. When the grouping section (109) divides the RBs into the RB groups, the RB control unit (108) performs a control to change a combination of the RBs included in each of the RB groups with time. A scheduling section (110) performs a scheduling of allocating each of a plurality of mobile stations to each of the RBs in each of the RB groups according to the reception quality of the reference signal.

摘要翻译： 无线通信基站装置可以在减少占用上行链路的参考信号的量的情况下，有效地从频率调度获得多用户分集增益。 在该装置中，分组部（109）将多个RB（资源块）划分为多个RB组。 RB组控制单元（108）执行随时间改变RB和RB组之间的对应关系的控制。 当分组部分（109）将RB分成RB组时，RB控制单元（108）执行控制以随时间改变每个RB组中包括的RB的组合。 调度部（110）根据参考信号的接收质量，执行向RB组中的每个RB分配多个移动台中的每一个的调度。

公开(公告)号：US20100002804A1

公开(公告)日：2010-01-07

申请号：US12524689

申请日：2008-01-30

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

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

IPC分类号： H04L27/04 ,  H04L27/00

CPC分类号： H04L25/0226 ,  H04J13/0059 ,  H04J13/22

摘要： It is possible to provide a radio transmission device and a radio transmission method which can avoid degradation of a channel estimation accuracy using a reference signal formed by a ZC sequence even when the RS transmission band of a local cell is different from that of an adjacent cell. A mobile station decides a cyclic shift sequence corresponding to RB allocation information from an RS table which correlates different frequency bandwidths from a reference point of respective transmission bands to a spectrum start number of the cyclic shift sequence so as to satisfy a particular relationship based on the sequence length and transmits the decided cyclic shift sequence as RS to a base station. The base station uses the same RS table as the RS table of the mobile station and performs correlation calculation of the RS transmitted from the mobile station, thereby performing channel estimation.

摘要翻译： 可以提供一种无线传输装置和无线传输方法，即使当本地小区的RS传输频带与相邻小区的RS传输频带不同时，也可以使用由ZC序列形成的参考信号来降低信道估计精度的劣化 。 移动台从RS表中确定与RB分配信息相对应的循环移位序列，该RS表把不同的频带宽度从各个传输频带的参考点相关到循环移位序列的频谱起始号，从而满足基于 序列长度，并将所确定的循环移位序列作为RS发送到基站。 基站使用与移动站的RS表相同的RS表，对从移动台发送的RS进行相关运算，进行信道估计。

公开(公告)号：US20090213813A1

公开(公告)日：2009-08-27

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： H04B7/216 ,  H04J3/00

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：US20090046694A1

公开(公告)日：2009-02-19

申请号：US12092169

申请日：2006-11-02

申请人： Atsushi Matsumoto ,  Daichi Imamura ,  Sadaki Futagi ,  Takashi Iwai

发明人： Atsushi Matsumoto ,  Daichi Imamura ,  Sadaki Futagi ,  Takashi Iwai

IPC分类号： H04J1/00

CPC分类号： H04L5/0058 ,  H04L5/0007 ,  H04L5/0044 ,  H04L27/261 ,  H04W72/1231 ,  H04W72/1263

摘要： Provided is a radio transmission device, which is enabled to improve a reception quality by improving the channel estimation precision of specific data such as control data. In this device, a mapping control unit (109) acquires pilot position information (at ST1010), and determines a resource block or a candidate for the mapping position of control channel data (at ST1020). The mapping control unit (109) also determines a resource block other than that candidate as the mapping position of other data (at ST1030). Moreover, the mapping control unit (109) generates a mapping control signal for instructing a mapping unit (104) the candidate of the mapping position of the control data and the mapping position of other data, that is, a mapping method, and outputs the generated mapping control signal to the mapping unit (104).

摘要翻译： 提供一种无线传输装置，其能够通过提高诸如控制数据的特定数据的信道估计精度来提高接收质量。 在该装置中，映射控制部（109）获取导频位置信息（ST1010），并确定控制信道数据的映射位置的资源块或候选（ST1020）。 映射控制单元（109）还确定除该候选之外的资源块作为其他数据的映射位置（在ST1030中）。 此外，映射控制部（109）生成映射控制信号，用于指示映射部（104）候选控制数据的映射位置和其他数据的映射位置（即映射方法），并输出 生成映射控制信号到映射单元（104）。

公开(公告)号：US20070155323A1

公开(公告)日：2007-07-05

申请号：US10586970

申请日：2005-01-27

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

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

IPC分类号： H04B7/24 ,  H04B1/034

CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/006

摘要： A transmission/reception apparatus capable of preventing degradation in system capacity, improving system throughput, and minimizing power consumption of an apparatus is disclosed. In this apparatus, a propagation path determining section (131) determines a propagation path state in all the regions in the used frequency band of a received multicarrier signal based on propagation path estimation information such as a channel estimation value and the like calculated in a propagation path estimating section (126), and specifies a frequency region having a good propagation path state from the used frequency band of OFDM. More specifically, the used frequency band is divided into a plurality of frequency bands (subbands), each comprised of smaller predetermined bandwidth, and by selecting a subband having a good propagation path state in the propagation pathdetermining section (131), a frequency region having the good propagation path state is specified. A transmitting section (110) reports the subband information to a base station.

摘要翻译： 公开了一种能够防止系统容量降低，提高系统吞吐量并使装置的功耗最小化的发送/接收装置。 在该装置中，传播路径确定部（131）基于传播路径估计信息，例如在传播中计算出的信道估计值等，来确定接收到的多载波信号的使用频带中的所有区域中的传播路径状态 路径估计部（126），并且从OFDM的所使用的频带指定具有良好的传播路径状态的频率区域。 更具体地，所使用的频带被划分为多个频带（子带），每个频带包括较小的预定带宽，并且通过在传播路径确定部分（131）中选择具有良好传播路径状态的子带，具有 指定良好的传播路径状态。 发送部分（110）将子带信息报告给基站。

公开(公告)号：US08509344B2

公开(公告)日：2013-08-13

申请号：US12672256

申请日：2008-08-07

申请人： Yoshihiko Ogawa ,  Daichi Imamura ,  Takashi Iwai ,  Katsuhiko Hiramatsu ,  Tomofumi Takata ,  Atsushi Matsumoto

发明人： Yoshihiko Ogawa ,  Daichi Imamura ,  Takashi Iwai ,  Katsuhiko Hiramatsu ,  Tomofumi Takata ,  Atsushi Matsumoto

IPC分类号： H04L27/00

CPC分类号： H04W72/0453 ,  H04J1/02 ,  H04J13/0055 ,  H04J13/22

摘要： A radio transmission device and a radio communication method employ sequence length decision units which hold a correspondence in which one basic sequence length is set for a plurality of transmission bandwidths. The sequence length decision units acquire transmission bandwidth information and decide a sequence length corresponding to the acquired transmission bandwidth information. A decision is made as to which of the cyclic extension process or the truncation process is to be executed on a Zadoff-Chu sequence according to the sizes of the acquired transmission bandwidth information and the basic sequence length. Then, a difference between the transmission bandwidth and the basic sequence length, i.e., the number of possible cyclic extension/truncation symbols, is obtained.

摘要翻译： 无线发送装置和无线通信方法使用具有对于多个发送带宽设定了一个基本序列长度的对应关系的序列长度判定单元。 序列长度决定单元获取传输带宽信息并确定与获取的传输带宽信息相对应的序列长度。 根据获取的传输带宽信息和基本序列长度的大小，决定在Zadoff-Chu序列上执行循环扩展处理或截断处理中的哪一个。 然后，获得传输带宽和基本序列长度之间的差异，即可能的循环扩展/截断符号的数量。