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    MULTI-CARRIER TRANSMISSION/RECEPTION APPARATUS
    1.
    发明公开
    MULTI-CARRIER TRANSMISSION/RECEPTION APPARATUS 审中-公开
    多个车辆发送/接收设备

    公开(公告)号：EP1453232A4

    公开(公告)日：2011-05-25

    申请号：EP02786007

    申请日：2002-12-03

    申请人： PANASONIC CORP

    发明人： MORITA MINORI ,  SUMASU ATSUSHI

    IPC分类号： H04J11/00 ,  H04B1/707 ,  H04B7/26 ,  H04J13/00 ,  H04L5/02 ,  H04W48/16 ,  H04W72/04 ,  H04W76/02 ,  H04J13/04

    CPC分类号： H04B1/70735 ,  H04B1/7083 ,  H04L5/0021 ,  H04L5/0048 ,  H04L27/2656

    摘要： A multicarrier radio communication technology that enables radio resources to be used effectively, interference to be suppressed, and a cell search to be performed at high speed, in a multicarrier CDMA system. In this technology, a secondary synchronization code (S-SCH signal) for identifying the group of scrambling codes divided into groups beforehand is frequency multiplexed in a plurality of subcarriers. A secondary synchronization code is coded in the time direction. Subcarriers in which a secondary synchronization code is multiplexed are mutually separated and equally spaced. The number of subcarriers in which a secondary synchronization code is multiplexed can be set to a small value with respect to the total number of subcarriers. A secondary synchronization code is an orthogonal code. On the receiving side, a cell search is carried out using such a frequency multiplexed type S-SCH.

    VARIABLE RATE TRANSMITTING METHOD, AND TRANSMITTER AND RECEIVER USING IT
    4.
    发明授权
    VARIABLE RATE TRANSMITTING METHOD, AND TRANSMITTER AND RECEIVER USING IT 失效
    传输可变比特率的方法，并且此二手发送者和接收者

    公开(公告)号：EP0758168B2

    公开(公告)日：2010-07-07

    申请号：EP96903224.2

    申请日：1996-02-23

    申请人： NTT DoCoMo, Inc.

    发明人： OKUMURA, Yukihiko ,  ADACHI, Fumiyuki ,  OHNO, Koji, Tomioka-syataku 8-502 ,  HIGASHI, Akihiro, Hayashi-syataku 3-301

    IPC分类号： H04J13/04 ,  H04L1/00

    CPC分类号： H04L1/0046 ,  H04B1/707 ,  H04B7/2628 ,  H04B2201/70703 ,  H04B2201/70705 ,  H04J3/14 ,  H04J3/1682 ,  H04L1/0002 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0013 ,  H04L1/0025 ,  H04L1/0032 ,  H04L1/0038 ,  H04L1/0039 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0063 ,  H04L1/0071 ,  H04L1/0079 ,  H04L1/0086 ,  H04L1/08 ,  H04L7/048 ,  H04L2001/0098 ,  Y02D50/10

    摘要： A variable rate transmission method that can vary the transmission rate of data. A transmitting side supplies a transmitted data sequence to an error detecting encoder (105) and a frame memory (103). The frame memory (103) stores data of a variable length to be transmitted in one frame. The error detecting encoder (105) calculates an error detecting code (such as CRC code) for each frame of the transmitted data. A multiplexer (104) adds the calculated error detecting code ahead of the transmitted data to place it at the initial position of the frame, and sequentially outputs the data sequence frame by frame. A receiving side calculates an error detecting code of the data in each transmitted frame in the same manner as the transmitting side, and compares the calculated error detecting code with the error detecting code at the initial position of the frame. The end bit of the frame data is decided as a position at which the two error detecting codes coincide. This makes it possible to transmit variable length data without informing the receiving side of the data length in each frame. This is equivalent that the transmission rate can be varied freely. A variable rate transmission method that can vary the transmission rate of data. A transmitting side supplies a transmitted data sequence to an error detecting encoder (105) and a frame memory (103). The frame memory (103) stores data of a variable length to be transmitted in one frame. The error detecting encoder (105) calculates an error detecting code (such as CRC code) for each frame of the transmitted data. A multiplexer (104) adds the calculated error detecting code ahead of the transmitted data to place it at the initial position of the frame, and sequentially outputs the data sequence frame by frame. A receiving side calculates an error detecting code of the data in each transmitted frame in the same manner as the transmitting side, and compares the calculated error detecting code with the error detecting code at the initial position of the frame. The end bit of the frame data is decided as a position at which the two error detecting codes coincide. This makes it possible to transmit variable length data without informing the receiving side of the data length in each frame. This is equivalent that the transmission rate can be varied freely.

    Operation of a forward link acknowledgement channel for the reverse link data
    7.
    发明公开
    Operation of a forward link acknowledgement channel for the reverse link data 审中-公开
    用于反向链路数据的前向链路确认信道的操作

    公开(公告)号：EP2096782A3

    公开(公告)日：2009-12-23

    申请号：EP09158870.7

    申请日：2003-12-30

    申请人： Qualcomm Incorporated

    发明人： Sarkar, Sandip ,  Chen, Tao ,  Tiedemann, Edward, G., Jr. ,  Gaal, Peter

    IPC分类号： H04L1/18 ,  H04B7/005 ,  H03M13/13 ,  H04L1/00 ,  H04L1/08 ,  H04J13/04

    CPC分类号： H04L1/1812 ,  H04B17/24 ,  H04B17/309 ,  H04J13/0048 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/0057 ,  H04L1/0073 ,  H04L1/08 ,  H04L1/1607 ,  H04L1/1671 ,  H04L1/1825 ,  H04L1/1845 ,  H04L1/1854 ,  H04L1/1858 ,  H04L2001/0093 ,  H04L2001/125 ,  H04W52/48

    摘要： An acknowledgement method in a wireless communication system. Initially, a reverse supplemental channel (R-SCH) frame is received at a base station. The base station then transmits an acknowledgement (ACK) signal if quality of the received R-SCH frame is indicated as being good. A negative acknowledgement (NAK) signal is transmitted only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame. If the best base station is known, the acknowledgement method may reverse the transmission of the acknowledgement signals for the best base station so that only NAK signal is sent. A positive acknowledgement is assumed in the absence of an acknowledgement. This is done to minimize the transmit power requirements.
    Acknowledgement messages may be encoded with a block code, delayed and mixed with a Walsh code or another orthogonal sequence for channelization.

    摘要翻译： 无线通信系统中的确认方法。 最初，在基站处接收反向辅助信道（R-SCH）帧。 如果所接收的R-SCH帧的质量被指示为良好，则基站然后发送确认（ACK）信号。 仅当接收到的数据帧被指示为坏但具有足够的能量时才发送否定确认（NAK）信号，使得如果与来自数据帧的重传的能量组合，则足以准许数据帧的正确解码 。 如果最好的基站是已知的，那么确认方法可以反转最佳基站的确认信号的发送，以便只发送NAK信号。 在没有确认的情况下假设为肯定。 这样做是为了最小化发射功率要求。 确认消息可以用分组码编码，延迟并与沃尔什码或用于信道化的另一正交序列混合。

    TRANSMISSION CIRCUIT
    9.
    发明授权
    TRANSMISSION CIRCUIT 有权
    新闻传输电路

    公开(公告)号：EP1220481B1

    公开(公告)日：2009-10-14

    申请号：EP00954974.2

    申请日：2000-08-24

    申请人： NEC CORPORATION

    发明人： SHOJI, Takashi, NEC Corporation

    IPC分类号： H04J13/04 ,  H04B7/26

    CPC分类号： H04J13/00 ,  H04B1/707

    摘要： This transmission circuit is used in, for example, a base station in CDMA mobile communication. The transmission circuit has a first delay circuit section which gives a delay to an input signal (spread signal) with a predetermined resolution, and a second delay circuit section gives a delay to the output signal of the first delay circuit section with a higher resolution than the predetermined resolution. A control section computes a first delay amount which is a maximum value that does not exceed a predetermined delay amount and can be given by a delay of the predetermined resolution, instructs the first delay circuit section the first delay amount, computes a second delay amount which is the first delay amount subtracted from the predetermined delay amount and instructs the second delay circuit section the second delay amount. By adjusting a transmission timing this way, it is possible to adjust the transmission timing among a plurality of base stations while reducing the circuit scale.