公开(公告)号：US20070286129A1

公开(公告)日：2007-12-13

申请号：US11831189

申请日：2007-07-31

申请人： Hiroyuki Atarashi ,  Sadayuki Abeta ,  Koichi Okawa ,  Takehiro Ikeda ,  Mamoru Sawahashi ,  Fumiyuki Adachi

发明人： Hiroyuki Atarashi ,  Sadayuki Abeta ,  Koichi Okawa ,  Takehiro Ikeda ,  Mamoru Sawahashi ,  Fumiyuki Adachi

IPC分类号： H04B7/00

CPC分类号： H04W72/1252 ,  H04B1/707 ,  H04J13/00 ,  H04L5/0019 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0087 ,  H04L5/0092 ,  H04L5/06 ,  H04W72/06

摘要： The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplink packet transmission method in a multi-carrier/DS-CDMA mobile communication system is also provided, wherein frames are set up in each communication channel of a subcarrier, time slots which are time-segments of the frames are set up further, and a mobile station spreads a packet to be transmitted by a spreading code and the information signal is transmitted to a base station in a predetermined time slot. A downlink channel configuration in a multi-carrier/DS-CDMA mobile communication system is further provided, wherein a plurality of communication channels assigned to each of a plurality of subcarriers are divided for every predetermined time frame, and multiplexed, and the plurality of the communication channels assigned to each subcarrier include a common-control channel used by a plurality of users in common, and communication channels peculiar to each user.

公开(公告)号：US07298721B2

公开(公告)日：2007-11-20

申请号：US09926257

申请日：2001-02-02

申请人： Hiroyuki Atarashi ,  Sadayuki Abeta ,  Koichi Okawa ,  Takehiro Ikeda ,  Mamoru Sawahashi ,  Fumiyuki Adachi

发明人： Hiroyuki Atarashi ,  Sadayuki Abeta ,  Koichi Okawa ,  Takehiro Ikeda ,  Mamoru Sawahashi ,  Fumiyuki Adachi

IPC分类号： H04B7/216

CPC分类号： H04W72/1252 ,  H04B1/707 ,  H04J13/00 ,  H04L5/0019 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0087 ,  H04L5/0092 ,  H04L5/06 ,  H04W72/06

摘要： The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplink packet transmission method in a multi-carrier/DS-CDMA mobile communication system is also provided, wherein frames are set up in each communication channel of a subcarrier, time slots which are time-segments of the frames are set up further, and a mobile station spreads a packet to be transmitted by a spreading code and the information signal is transmitted to a base station in a predetermined time slot. A downlink channel configuration in a multi-carrier/DS-CDMA mobile communication system is further provided, wherein a plurality of communication channels assigned to each of a plurality of subcarriers are divided for every predetermined time frame, and multiplexed, and the plurality of the communication channels assigned to each subcarrier include a common-control channel used by a plurality of users in common, and communication channels peculiar to each user.

摘要翻译： 本发明提供了一种单载波/ DS-CDMA分组传输方法，其中相对于扩展码将预定时隙分配给预留请求分组传输，并且预留请求分组和数据分组被时分复用以进行传输。 还提供了一种在多载波/ DS-CDMA移动通信系统中的上行链路分组传输方法，其中在子载波的每个通信信道中建立帧，进一步设置作为帧的时间段的时隙，以及 移动台通过扩展码扩展要发送的分组，并且在预定时隙中将信息信号发送到基站。 还提供了一种多载波/ DS-CDMA移动通信系统中的下行链路信道配置，其中分配给多个子载波中的每一个的多个通信信道被划分为每个预定时间帧，并被多路复用，并且多个 分配给每个子载波的通信信道包括共同使用的公共控制信道和每个用户特有的通信信道。

公开(公告)号：US08005110B2

公开(公告)日：2011-08-23

申请号：US11837981

申请日：2007-08-13

申请人： Koichi Okawa ,  Hiroyuki Atarashi ,  Sadayuki Abeta ,  Mamoru Sawahashi

发明人： Koichi Okawa ,  Hiroyuki Atarashi ,  Sadayuki Abeta ,  Mamoru Sawahashi

IPC分类号： H04B7/216

CPC分类号： H04W72/1252 ,  H04B1/707 ,  H04J13/00 ,  H04L5/0019 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0087 ,  H04L5/0092 ,  H04L5/06 ,  H04W72/06

摘要： The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplink packet transmission method in a multi-carrier/DS-CDMA mobile communication system is also provided, wherein frames are set up in each communication channel of a subcarrier, time slots which are time-segments of the frames are set up further, and a mobile station spreads a packet to be transmitted by a spreading code and the information signal is transmitted to a base station in a predetermined time slot. A downlink channel configuration in a multi-carrier/DS-CDMA mobile communication system is further provided, wherein a plurality of communication channels assigned to each of a plurality of subcarriers are divided for every predetermined time frame, and multiplexed, and the plurality of the communication channels assigned to each subcarrier include a common-control channel used by a plurality of users in common, and communication channels peculiar to each user.

摘要翻译： 本发明提供了一种单载波/ DS-CDMA分组传输方法，其中相对于扩展码将预定时隙分配给预留请求分组传输，并且预留请求分组和数据分组被时分复用以进行传输。 还提供了一种在多载波/ DS-CDMA移动通信系统中的上行链路分组传输方法，其中在子载波的每个通信信道中建立帧，进一步建立作为帧的时间段的时隙，以及 移动台通过扩展码扩展要发送的分组，并且在预定时隙中将信息信号发送到基站。 还提供了一种多载波/ DS-CDMA移动通信系统中的下行链路信道配置，其中分配给多个子载波中的每一个的多个通信信道被划分为每个预定时间帧，并被多路复用，并且多个 分配给每个子载波的通信信道包括共同使用的公共控制信道和每个用户特有的通信信道。

公开(公告)号：US20070291701A1

公开(公告)日：2007-12-20

申请号：US11837981

申请日：2007-08-13

申请人： Hiroyuki Atarashi ,  Sadayuki Abeta ,  Koichi Okawa ,  Mamoru Sawahashi

发明人： Hiroyuki Atarashi ,  Sadayuki Abeta ,  Koichi Okawa ,  Mamoru Sawahashi

IPC分类号： H04B7/216

CPC分类号： H04W72/1252 ,  H04B1/707 ,  H04J13/00 ,  H04L5/0019 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0087 ,  H04L5/0092 ,  H04L5/06 ,  H04W72/06

摘要： The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplink packet transmission method in a multi-carrier/DS-CDMA mobile communication system is also provided, wherein frames are set up in each communication channel of a subcarrier, time slots which are time-segments of the frames are set up further, and a mobile station spreads a packet to be transmitted by a spreading code and the information signal is transmitted to a base station in a predetermined time slot. A downlink channel configuration in a multi-carrier/DS-CDMA mobile communication system is further provided, wherein a plurality of communication channels assigned to each of a plurality of subcarriers are divided for every predetermined time frame, and multiplexed, and the plurality of the communication channels assigned to each subcarrier include a common-control channel used by a plurality of users in common, and communication channels peculiar to each user.

摘要翻译： 本发明提供了一种单载波/ DS-CDMA分组传输方法，其中相对于扩展码将预定时隙分配给预留请求分组传输，并且预留请求分组和数据分组被时分复用以进行传输。 还提供了一种在多载波/ DS-CDMA移动通信系统中的上行链路分组传输方法，其中在子载波的每个通信信道中建立帧，进一步设置作为帧的时间段的时隙，以及 移动台通过扩展码扩展要发送的分组，并且在预定时隙中将信息信号发送到基站。 还提供了一种多载波/ DS-CDMA移动通信系统中的下行链路信道配置，其中分配给多个子载波中的每一个的多个通信信道被划分为每个预定时间帧，并被多路复用，并且多个 分配给每个子载波的通信信道包括共同使用的公共控制信道和每个用户特有的通信信道。

公开(公告)号：US06647003B1

公开(公告)日：2003-11-11

申请号：US09358037

申请日：1999-07-20

申请人： Sadayuki Abeta ,  Mamoru Sawahashi ,  Fumiyuki Adachi

发明人： Sadayuki Abeta ,  Mamoru Sawahashi ,  Fumiyuki Adachi

IPC分类号： H04B7216

CPC分类号： H04L25/0212 ,  H04B2201/70701 ,  H04L25/0226 ,  H04L25/0234

摘要： There are provided a channel estimation unit for achieving highly accurate channel estimation, a CDMA receiver and a CDMA transceiver with the channel estimation unit. Channel estimates of data symbols are obtained from a pilot symbol sequence which is parallel with a data symbol sequence. First, a plurality of pilot blocks are generated from the pilot symbol sequence. The channel estimates of the data symbols are obtained by calculating a sum of appropriately weighted averages of pilot symbols in the individual pilot blocks. This enables highly accurate channel estimation. More accurate channel estimation can be achieved by carrying out the channel estimation of the data symbols using the pilot symbols belonging to other slots rather than limiting to the pilot symbols in the slot to which the estimated data symbol belongs.

摘要翻译： 提供了一种用于实现高度准确的信道估计的信道估计单元，具有信道估计单元的CDMA接收机和CDMA收发器。 从与数据符号序列并行的导频符号序列获得数据符号的信道估计。 首先，从导频符号序列生成多个导频块。 通过计算各个导频块中的导频符号的适当加权平均值的和来获得数据符号的信道估计。 这使得能够进行高度准确的信道估计。 可以通过使用属于其他时隙的导频符号执行数据符号的信道估计而不是限制估计数据符号所属的时隙中的导频符号来实现更准确的信道估计。

公开(公告)号：US06904078B1

公开(公告)日：2005-06-07

申请号：US09446560

申请日：1999-04-22

申请人： Sadayuki Abeta ,  Mamoru Sawahashi ,  Fumiyuki Adachi

发明人： Sadayuki Abeta ,  Mamoru Sawahashi ,  Fumiyuki Adachi

IPC分类号： H04B1/712 ,  H04J13/00 ,  H04L25/02 ,  H04W52/04 ,  H04W88/02 ,  H04W88/08 ,  H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC分类号： H04B1/707 ,  H04B2201/70707 ,  H04L25/0202 ,  H04L25/0214 ,  H04L25/0234

摘要： A CDMA receiver and a CDMA transceiver are provided which have high resistance to fading fluctuations, and carry out highly accurate channel estimation, considering the rate of channel fluctuations. When carrying out the channel estimation by calculating weighted sums of the (average values of) pilot symbols interposed into a data symbol sequence, the weighting control is performed considering the rate of the channel fluctuations. For example, the weighting control is carried out using, as its update values, inner products of the channel estimation values and the (average values of) pilot symbols. This makes it possible to achieve the highly accurate channel estimation.

摘要翻译： 提供CDMA接收机和CDMA收发器，其具有高的抗衰落波动性，并且考虑到信道波动的速率，执行高度准确的信道估计。 当通过计算插入到数据符号序列中的导频符号的（平均值）的加权和进行信道估计时，考虑到信道波动的速率来进行加权控制​​。 例如，使用信道估计值的内积和导频符号的（平均值）作为其更新值来执行加权控制​​。 这使得可以实现高度准确的信道估计。

公开(公告)号：US06757272B1

公开(公告)日：2004-06-29

申请号：US09375906

申请日：1999-08-17

申请人： Sadayuki Abeta ,  Mamoru Sawahashi ,  Fumiyuki Adachi

发明人： Sadayuki Abeta ,  Mamoru Sawahashi ,  Fumiyuki Adachi

IPC分类号： H04B1500

CPC分类号： H04W52/24 ,  H04L25/0214 ,  H04L25/0232

摘要： There are provided a channel estimation unit for achieving highly accurate channel estimation, a CDMA receiver and a CDMA transceiver with the channel estimation unit. Channel estimates of data symbols are obtained from pilot symbols in a combined symbol sequence which has a plurality of slots and includes the data symbols and the pilot symbols. First, the pilot symbols in the combined symbol sequence are located. Second, pilot blocks are generated by extracting the pilot symbols from two or more slots in the combined symbol sequence. Third, channel estimates of the data symbols are obtained by calculating a weighted sum of averages of the pilot symbols in the individual pilot blocks. The weighted sum is carried out using appropriate weighting factors for individual data symbols in each slot. This enables highly accurate channel estimation.

摘要翻译： 提供了一种用于实现高度准确的信道估计的信道估计单元，具有信道估计单元的CDMA接收机和CDMA收发器。 从具有多个时隙的组合符号序列中的导频符号获得数据符号的信道估计，并且包括数据符号和导频符号。 首先，组合符号序列中的导频符号位于。 第二，通过从组合符号序列中的两个或更多个时隙提取导频符号来产生导频块。 第三，通过计算各个导频块中的导频符号的平均值的加权和来获得数据符号的信道估计。 使用每个时隙中的各个数据符号的适当加权因子来执行加权和。 这使得能够进行高度准确的信道估计。

公开(公告)号：US07185256B2

公开(公告)日：2007-02-27

申请号：US09885408

申请日：2001-06-21

申请人： Nobuhiko Miki ,  Hiroyuki Atarashi ,  Sadayuki Abeta ,  Mamoru Sawahashi

发明人： Nobuhiko Miki ,  Hiroyuki Atarashi ,  Sadayuki Abeta ,  Mamoru Sawahashi

IPC分类号： H03M13/00 ,  H04L1/18

CPC分类号： H04L1/06 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/1671 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1845 ,  H04W52/54

摘要： A communication system and method includes the steps of: a) transmitting an ACK signal indicating a received packet includes no error or a NACK signal indicating the received packet includes error from a reception end to a transmission end, and performing automatic repeat request; b) obtaining reliability of the received packet when demodulating it at the reception end; and c) reporting from the reception end to the transmission end the reliability of the received packet utilizing the ACK/NACK signal by using not less than three levels.

摘要翻译： 一种通信系统和方法包括以下步骤：a）发送指示接收到的分组的ACK信号不包括错误或指示所接收分组的NACK信号包括从接收端到发送端的错误，并且执行自动重传请求; b）在接收端解调接收到的分组的可靠性; 以及c）通过使用不少于三个等级，使用ACK / NACK信号从接收端向发送端报告接收到的分组的可靠性。

公开(公告)号：US20060039331A1

公开(公告)日：2006-02-23

申请号：US11248307

申请日：2005-10-13

申请人： Sadayuki Abeta ,  Hiroyuki Atarashi ,  Mamoru Sawahashi

发明人： Sadayuki Abeta ,  Hiroyuki Atarashi ,  Mamoru Sawahashi

IPC分类号： H04B7/216

CPC分类号： H04L25/0232 ,  H04L5/026

摘要： A multi-carrier CDMA radio transmitting method replicates each information symbol and disposes thus-obtained information symbols along a frequency axis, multiplies the thus-obtained information symbols with a spreading code along the frequency axis, spreads the information symbols into components of a plurality of sub-carriers having different frequencies. The transmission rate of the information is changed by controlling the amount of information transmitted simultaneously by controlling the number of the information symbols to be used for spreading for the plurality of sub-carrier components for each user to which the information is to be transmitted.

摘要翻译： 多载波CDMA无线电发送方法复制每个信息符号并且沿着频率轴处理如此获得的信息符号，将如此获得的信息符号与沿着频率轴的扩展码相乘，将信息符号扩展成多个 具有不同频率的子载波。 通过控制要发送信息的每个用户的多个子载波分量的用于扩展的信息符号的数量来控制同时发送的信息量来改变信息的传输速率。

公开(公告)号：US07646747B2

公开(公告)日：2010-01-12

申请号：US09926193

申请日：2001-01-23

申请人： Hiroyuki Atarashi ,  Sadayuki Abeta ,  Mamoru Sawahashi

发明人： Hiroyuki Atarashi ,  Sadayuki Abeta ,  Mamoru Sawahashi

IPC分类号： H04W4/00 ,  H04L5/26 ,  H04B7/212 ,  H04J1/00

CPC分类号： H04L5/023

摘要： The present invention is directed to a channel structuring method that includes a step of providing time frames segmented at a predetermined interval in communication channels of n subcarriers, a step of selecting a predetermined number of subcarriers from n subcarriers and a step of inserting a common control channel signal and a common pilot signal periodically into each of the time frames of the selected subcarriers.

摘要翻译： 本发明涉及一种信道结构化方法，其包括以下步骤：提供在n个子载波的通信信道中以预定间隔分段的时间帧;从n个子载波中选择预定数量的子载波的步骤，以及插入公共控制 频道信号和公共导频信号周期性地进入所选择的子载波的每个时间帧。