公开(公告)号：US20100254485A1

公开(公告)日：2010-10-07

申请号：US12746750

申请日：2008-12-12

申请人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Hidenori Kayama ,  Hidenori Matsuo ,  Yoshiko Saito ,  Seigo Nakao ,  Shinsuke Takaoka

发明人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Hidenori Kayama ,  Hidenori Matsuo ,  Yoshiko Saito ,  Seigo Nakao ,  Shinsuke Takaoka

IPC分类号： H04L27/00

CPC分类号： H04B7/0671 ,  H04B7/0413 ,  H04B7/0613 ,  H04B7/0684 ,  H04B7/10

摘要： It is possible to provide a novel pilot transmission method which can calculate an accurate channel estimation value, a MIMO transmission device using the pilot transmission method, and a MIMO reception device which communicates with the MIMO transmission device. The MIMO transmission device (100) includes phase adjustment units (130-1, 130-2) which are controlled by a pilot transmission control unit (170) to multiply parallel pilot signals by a phase adjustment coefficient group so as to adjust the pilot signal transmission timing. The pilot transmission control unit (170) differentiates the order of the transmitting antennas in accordance with the pilot transmission timing between an even-number subcarrier group and an odd-number subcarrier group. At a reception side, a path not influenced by the inter-path interference is extracted for each of the combinations of the transmitting antennas and the subcarrier groups. A channel estimation value is calculated according to the extracted path so as to improve the channel estimation accuracy.

摘要翻译： 可以提供一种可以计算准确的信道估计值的新型导频传输方法，使用导频传输方法的MIMO传输装置和与MIMO传输装置进行通信的MIMO接收装置。 MIMO传输设备（100）包括由导频传输控制单元（170）控制以将并行导频信号乘以相位调整系数组的相位调整单元（130-1,130-2），以便调整导频信号 传输时机。 导频传输控制单元根据偶数子载波组和奇数子载波组之间的导频发送定时来区分发送天线的顺序。 在接收侧，针对发送天线和子载波组的每个组合提取不受路径间干扰影响的路径。 根据提取的路径计算信道估计值，以提高信道估计精度。

公开(公告)号：US20100260284A1

公开(公告)日：2010-10-14

申请号：US12742894

申请日：2008-12-09

申请人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Hidenori Kayama

发明人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Hidenori Kayama

IPC分类号： H04L27/00

CPC分类号： H04B7/0671 ,  H04L27/2601 ,  H04L27/2607

摘要： Provided is a MIMO transmission device which can effectively perform a pilot transmission by using a surplus sample generated in a pilot symbol while maintaining the pilot separation accuracy at a reception side. The MIMO transmission device (100) transmits a pilot symbol as follows. That is, in a first pilot transmission symbol section, a transmission section of a pilot signal transmitted from a first transmission antenna is partially overlapped by a pilot transmission section of a second transmission antenna. In a second pilot transmission symbol section, a pilot transmission section of the first transmission antenna is partially overlapped by a pilot transmission section of a third antenna. Among the pilot signals transmitted from the first antenna, the interference portions overlapped by transmission pilot signals from other antennas are different between the first pilot transmission symbol section and the second pilot transmission symbol section.

摘要翻译： 提供一种MIMO传输装置，其可以通过在导频符号中生成的剩余采样同时在接收侧保持导频分离精度来有效地执行导频发送。 MIMO发送装置（100）如下发送导频符号。 也就是说，在第一导频发送符号部分中，从第一发送天线发送的导频信号的发送部分由第二发送天线的导频发送部分重叠。 在第二导频发送符号部分中，第一发送天线的导频发送部分由第三天线的导频发送部分重叠。 在从第一天线发送的导频信号中，与来自其他天线的发送导频信号重叠的干扰部分在第一导频传输符号部分和第二导频传输符号部分之间是不同的。

公开(公告)号：US20100222003A1

公开(公告)日：2010-09-02

申请号：US12678099

申请日：2008-09-25

申请人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Naoya Yosoku ,  Hidenori Kayama

发明人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Naoya Yosoku ,  Hidenori Kayama

IPC分类号： H04B15/00

CPC分类号： H04W72/082 ,  H04L5/0032 ,  H04W52/243 ,  H04W72/0413

摘要： It is possible to provide a transmission control method, a radio communication system, and a radio base station device which can reduce the time required until an inter-cell interference is reduced so as to improve the system throughput. A base station (200) includes: an FFT unit (210) which receives an interference report transmitted by using a common radio resource common to adjacent cells from a plurality of radio terminals (100) existing in different adjacent cells; and an adaptive FFR processing unit (230) which controls adaptive FFR processing in a downstream line of the local cell according to the reception interference report. Thus, by receiving an interference report directly from the radio terminals (100) existing in adjacent cells, it is possible to modify the transmission mode by considering the interference state in the adjacent cells. This eliminates the need of sending a report on a transmission mode modification which has been conventionally sent between adjacent base stations (200). This reduces the signaling required in the system, which improves the system throughput.

摘要翻译： 可以提供一种传输控制方法，无线电通信系统和无线电基站装置，其可以减少小区间干扰减少所需的时间，从而提高系统吞吐量。 基站（200）包括：FFT单元（210），其接收通过使用来自存在于不同相邻小区中的多个无线终端（100）的相邻小区共用的公共无线资源来发送的干扰报告; 以及根据接收干扰报告来控制本地小区的下游线路中的自适应FFR处理的自适应FFR处理单元（230）。 因此，通过直接从相邻小区中存在的无线终端（100）接收干扰报告，可以通过考虑相邻小区中的干扰状态来修改发送模式。 这消除了发送关于传统上在相邻基站（200）之间发送的传输模式修改的报告的需要。 这减少了系统中所需的信令，这提高了系统吞吐量。

公开(公告)号：US09226301B2

公开(公告)日：2015-12-29

申请号：US12678099

申请日：2008-09-25

申请人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Naoya Yosoku ,  Hidenori Kayama

发明人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Naoya Yosoku ,  Hidenori Kayama

IPC分类号： H04W72/08 ,  H04W72/04 ,  H04W52/24 ,  H04L5/00

CPC分类号： H04W72/082 ,  H04L5/0032 ,  H04W52/243 ,  H04W72/0413

摘要： A wireless base station apparatus includes an interference report receiver configured to receive interference reports transmitted on a shared radio resource from a plurality of wireless terminals that are present in a plurality of adjacent cells that are adjacent to a target cell, the shared radio resource being comprised of a plurality of carriers and being shared between the plurality of adjacent cells, and an adaptive fractional frequency reuse controller configured to control adaptive fractional frequency reuse processing in a downlink of the target cell, based on the received interference reports showing a downlink reception quality, wherein the interference reports are transmitted using selected carriers from the plurality of carriers by the plurality of wireless terminals, based on the downlink reception quality.

摘要翻译： 无线基站装置包括：干扰报告接收器，被配置为从存在于与目标小区相邻的多个相邻小区中的多个无线终端接收在共享无线资源上发送的干扰报告，所述共享无线资源包括 并且在多个相邻小区之间共享，以及自适应分数频率重用控制器，被配置为基于接收到的示出下行链路接收质量的干扰报告来控制目标小区的下行链路中的自适应分数频率重用处理， 其中，所述干扰报告基于所述下行链路接收质量，由所述多个无线终端从所述多个载波中使用所选择的载波来发送。

公开(公告)号：US20100260235A1

公开(公告)日：2010-10-14

申请号：US12746466

申请日：2008-12-10

申请人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Hidenori Kayama

发明人： Isamu Yoshii ,  Atsushi Sumasu ,  Tomohiro Imai ,  Hidenori Kayama

IPC分类号： H04B1/707

CPC分类号： H04L5/0048 ,  H04B7/0671 ,  H04L5/0023 ,  H04L23/02 ,  H04L25/0226

摘要： It is possible to provide a novel pilot transmission method which can calculate an accurate channel estimation value, a MIMO transmission device using the pilot transmission method, and a MIMO reception device which performs communication with the MIMO transmission device. The MIMO transmission device (100) includes a cyclic shift processing unit (150) which cyclically shifts a first pilot signal sequence spread by a spread code 1 and second pilot signal sequence spread by a spread code 2 with different shift amounts. The first pilot signal sequence and the second pilot signal sequence which have been cyclically shifted are transmitted from different transmitting antennas at the same pilot transmission symbol section. Thus, by changing the shift amount of the cyclic shift process executed on each pilot signal sequence spread by the respective spread codes, it is possible to improve the pilot separation accuracy at a reception side. This enables more accurate calculation of a channel estimation value.

摘要翻译： 可以提供一种可以计算准确的信道估计值的新型导频传输方法，使用导频传输方法的MIMO传输装置，以及与MIMO传输装置进行通信的MIMO接收装置。 MIMO传输装置（100）包括循环移位处理单元（150），循环移位处理单元（150），循环移位由扩频码扩展的第一导频信号序列和以扩频码扩展的第二导频信号序列。 已经循环移位的第一导频信号序列和第二导频信号序列在相同的导频传输符号部分从不同的发射天线发射。 因此，通过改变对各扩频码扩频的每个导频信号序列执行的循环移位处理的移位量，可以提高接收端的导频分离精度。 这使得能够更准确地计算信道估计值。

公开(公告)号：US20090052392A1

公开(公告)日：2009-02-26

申请号：US11816166

申请日：2006-01-19

申请人： Atsushi Sumasu ,  Hidenori Kayama ,  Hiroki Haga ,  Masayuki Hoshino ,  Katsuyoshi Naka ,  Junya Yamazaki ,  Ryohei Kimura

发明人： Atsushi Sumasu ,  Hidenori Kayama ,  Hiroki Haga ,  Masayuki Hoshino ,  Katsuyoshi Naka ,  Junya Yamazaki ,  Ryohei Kimura

IPC分类号： H04W36/02

CPC分类号： H04L1/1887 ,  H04W36/02

摘要： 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.

摘要翻译： 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。

公开(公告)号：US08711804B2

公开(公告)日：2014-04-29

申请号：US11816166

申请日：2006-01-19

申请人： Atsushi Sumasu ,  Hidenori Kayama ,  Hiroki Haga ,  Masayuki Hoshino ,  Katsuyoshi Naka ,  Junya Yamazaki ,  Ryohei Kimura

发明人： Atsushi Sumasu ,  Hidenori Kayama ,  Hiroki Haga ,  Masayuki Hoshino ,  Katsuyoshi Naka ,  Junya Yamazaki ,  Ryohei Kimura

IPC分类号： H04W36/02

CPC分类号： H04L1/1887 ,  H04W36/02

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20070298825A1

公开(公告)日：2007-12-27

申请号：US11577340

申请日：2005-09-28

申请人： Hidenori Kayama ,  Jinsong Duan

发明人： Hidenori Kayama ,  Jinsong Duan

IPC分类号： H04B7/005 ,  H04Q7/30

CPC分类号： H04W28/22 ,  H04W52/267

摘要： There are provided a base station device, a mobile station device, and a transmission rate control method capable of appropriately controlling the transmission rate. In the base station device (100), an upstream scheduling unit (150) calculates a desired transmission power reduction ratio of a mobile station device whose transmission power is to be reduced among the mobile stations devices in which upstream packet communication is in progress and which is in the soft handover state, and transmits the desired transmission power reduction ratio. Thus, the mobile station device (300) which receives the desired transmission power reduction ratio can get a direct index concerning the transmission power reduction and it can select an appropriate transmission power and an appropriate transmission rate for it. Moreover, the base station device (100) can rapidly make an adjustment to an appropriate reception power level since the mobile station device (300) rapidly makes an adjustment to an appropriate transmission power according to the desired transmission power reduction ratio. That is, it is possible to realize a base station device, a mobile station device, and a transmission rate control method capable of performing an appropriate transmission rate control.

摘要翻译： 提供了能够适当地控制传输速率的基站装置，移动站装置和传输速率控制方法。 在基站装置（100）中，上行调度部（150）在上行分组通信正在进行的移动台装置中计算要发送功率降低的移动台装置的期望的发送功率减少率， 处于软切换状态，并且发送期望的发送功率减少率。 因此，接收到期望的发送功率减少率的移动站装置（300）可以获得关于发送功率降低的直接指标，并且可以选择合适的发送功率和适当的发送速率。 此外，由于移动站装置（300）根据期望的发送功率降低率快速地对适当的发送功率进行调整，因此基站装置（100）能够快速地对适当的接收功率电平进行调整。 也就是说，可以实现能够执行适当的传输速率控制的基站设备，移动站设备和传输速率控制方法。

公开(公告)号：US06577617B1

公开(公告)日：2003-06-10

申请号：US09359127

申请日：1999-07-23

申请人： Toyoki Ue ,  Hidenori Kayama ,  Osamu Kato ,  Kazuyuki Miya ,  Mitsuru Uesugi ,  Takashi Kitade

发明人： Toyoki Ue ,  Hidenori Kayama ,  Osamu Kato ,  Kazuyuki Miya ,  Mitsuru Uesugi ,  Takashi Kitade

IPC分类号： H04B7212

CPC分类号： H04W52/10 ,  H04B7/0608 ,  H04B7/061 ,  H04B7/2618 ,  H04W52/42

摘要： The present invention carries out transmission/reception of broadcast channels using only the last downlink slot of subframes using signals having a TDMA structure according to a CDMA/TDD system, and thus flexibly handles various services and avoids problems of interference in self-operated services in particular. The base station communication apparatus repeatedly transmits information contained in broadcast channels by the number of times corresponding to the time-sharing number and appropriately allots uplink and downlink slots, thus making the most of the features of uplink open-loop transmission power control and base station transmission diversity.

摘要翻译： 本发明仅利用具有根据CDMA / TDD系统的具有TDMA结构的信号的子帧的最后一个下行链路时隙进行广播信道的发送/接收，从而灵活地处理各种业务，并避免自身业务中的干扰问题 特定。 基站通信装置将包含在广播信道中的信息重复发送到与分时号相对应的次数，并适当地分配上行链路和下行链路时隙，从而充分利用上行链路开环发射功率控制和基站的特征 传输多样性。

公开(公告)号：US06898439B2

公开(公告)日：2005-05-24

申请号：US09890072

申请日：2000-11-29

申请人： Hidenori Kayama ,  Masaki Hayashi ,  Kazuyuki Miya

发明人： Hidenori Kayama ,  Masaki Hayashi ,  Kazuyuki Miya

IPC分类号： H04L1/00 ,  H04B7/005 ,  H04B7/26 ,  H04L29/02 ,  H04B7/00

CPC分类号： H04W52/24 ,  H04L1/0045 ,  H04L1/0061 ,  H04L1/20 ,  H04W52/12 ,  H04W52/20 ,  H04W52/36

摘要： A CRC judgment section 103 performs a CRC check on decoded data every transmission unit, and if there is an error in the data, updates a flag held in a flag holding section 106 from 0 to 1; an increment/decrement value calculation section 105 calculates a reference SIR increment/decrement value according to the state (0 or 1) of the flag; a reference SIR update section 107 adds the reference SIR increment/decrement value to the current reference SIR value to find a new reference SIR value; a comparison section 109 compares the received signal SIR value measured by an SIR measurement section 108 with the updated reference SIR value, and a transmission power control bit generation section 110 generates a transmission power control bit according to the result of the comparison.

摘要翻译： CRC判定部103对每个发送单位对解码数据进行CRC校验，如果数据存在错误，则将保持在标志保持部106中的标志从0更新为1; 增量/减量值计算部分105根据标志的状态（0或1）计算参考SIR增量/减量值; 参考SIR更新部分107将参考SIR增量/减量值与当前参考SIR值相加以找到新的参考SIR值; 比较部分109将由SIR测量部分108测量的接收信号SIR值与更新的参考SIR值进行比较，并且发送功率控制比特生成部分110根据比较结果生成发送功率控制比特。