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    • 15. 发明授权
    • Method for controlling transmission point of a dedicated channel in a CDMA communication system supporting an uplink synchronous transmission scheme
    • 用于控制支持上行链路同步传输方案的CDMA通信系统中的专用信道的传输点的方法
    • US06934526B2
    • 2005-08-23
    • US10080992
    • 2002-02-21
    • Sung-Ho ChoiHyun-Woo LeeSeong-Il ParkHo-Kyu Choi
    • Sung-Ho ChoiHyun-Woo LeeSeong-Il ParkHo-Kyu Choi
    • H04B7/26H04Q7/20
    • H04B7/2628
    • Disclosed is provided a method for switching an operation mode from a non-USTS to a USTS mode in a Node B capable of communicating with a UE in both the non-USTS mode and the USTS mode. The Node B calculates a difference value between a start point of a downlink dedicated channel frame in a downlink dedicated channel transmitted to the UE in the non-USTS mode and a start point of an uplink dedicated channel frame in an uplink dedicated channel received from the UE. The Node B determines a first control value for controlling the start point of the uplink dedicated channel frame in the uplink dedicated channel by comparing the difference value with a given reference value, and also determines a second control value such that the second control value for the start point of the downlink dedicated channel frame in the downlink dedicated channel becomes a multiple of a given number of chips. Further, the Node B informs the UE of the determined first and second control values, and then transmits a downlink dedicated channel signal such that the start point of the downlink dedicated channel frame becomes a start point determined based on the second control value.
    • 本发明提供了一种在非USTS模式和USTS模式下,能够在能够与UE通信的节点B中将非USTS操作模式切换到USTS模式的方法。 节点B计算在非USTS模式下发送给UE的下行专用信道中的下行专用信道帧的起始点与从上行专用信道接收的上行专用信道帧的起始点之间的差值 UE。 节点B通过将差值与给定参考值进行比较来确定用于控制上行链路专用信道中的上行链路专用信道帧的起始点的第一控制值,并且还确定第二控制值,使得第二控制值为 下行专用信道中的下行链路专用信道帧的起始点成为给定数量的码片的倍数。 此外,节点B向UE通知所确定的第一和第二控制值,然后发送下行链路专用信道信号,使得下行链路专用信道帧的起点成为基于第二控制值确定的起始点。
    • 17. 发明授权
    • Transmission apparatus and method for use in mobile communication system based on orthogonal frequency division multiplexing scheme
    • 基于正交频分复用方案的移动通信系统中使用的传输装置和方法
    • US07417964B2
    • 2008-08-26
    • US10872807
    • 2004-06-21
    • Young-Kwon ChoKatz Marcos DanielSeok-Hyun YoonDong-Seek ParkSeong-Ill ParkHo-Kyu ChoiPan-Yuh JooYoung-Kyun KimHyeon-Woo Lee
    • Young-Kwon ChoKatz Marcos DanielSeok-Hyun YoonDong-Seek ParkSeong-Ill ParkHo-Kyu ChoiPan-Yuh JooYoung-Kyun KimHyeon-Woo Lee
    • H04B7/204
    • H04L5/006H04L5/0017H04L5/0046H04L5/0048
    • A transmitter for a mobile communication system based on an OFDM scheme and a method for controlling the same. The transmitter can implement a characteristic of a multiple access scheme based on an OFDM scheme, a characteristic of a CDMA scheme, and a characteristic of a frequency hopping scheme which has very strong resistance to the frequency selective fading. An apparatus for transmitting information bit sequences from a BS (Base Station) transmitter to different users, includes a plurality of channelizers for dividing a single frame of information bit sequences to be transmitted to individual users into a plurality of times according to a given time interval, simultaneously transmitting the information bit sequences to the individual users within the plurality of division times, dividing the information bit sequences, spreading the divided information bit sequences using different Walsh codes, converting the spread information bit sequences into a single sequence associated with the individual users, and outputting the single sequence; and a frequency hopper for dividing the single sequence, distributing the spread information bit sequences over a plurality of bandwidths capable of mapping-processing the spread information bit sequences with sub-carrier frequencies, and preventing each of the bandwidths from overlapping with time-frequency cells given by the given time interval.
    • 一种用于基于OFDM方案的移动通信系统的发射机及其控制方法。 发射机可以基于OFDM方案,CDMA方案的特征以及对频率选择性衰落具有非常强的抵抗性的跳频方案的特性来实现多址方案的特性。 用于从BS(基站)发射机向不同用户发送信息比特序列的装置包括:多个信道化器,用于根据给定的时间间隔将要发送给各个用户的单个信息比特序列划分成多个时间 同时在多个分割时间内将信息比特序列发送给各个用户,分割信息比特序列,使用不同的沃尔什码扩展分割的信息比特序列,将扩展信息比特序列转换成与各个用户相关联的单个序列 并输出单个序列; 以及用于分割单个序列的频率漏斗,在扩展信息比特序列分布在能够对扩展信息比特序列进行映射处理的子载波频率的多个带宽上分布,并且防止每个带宽与时频小区重叠 由给定的时间间隔给出。
    • 18. 发明授权
    • Encoding apparatus and method in CDMA communication system
    • CDMA通信系统中的编码装置和方法
    • US07065700B2
    • 2006-06-20
    • US09814311
    • 2001-03-21
    • Jae-Yoel KimHyun-Woo LeeSoon-Young YoonHee-Won KangHo-Kyu Choi
    • Jae-Yoel KimHyun-Woo LeeSoon-Young YoonHee-Won KangHo-Kyu Choi
    • H03M13/03
    • H04B1/707H04J13/10
    • There is provided an encoding apparatus and method in a CDMA communication system. To encode input information of a k-bit sequence and generate a codeword with length N>(2k−1), an encoder encodes the input information using an (r, k) simplex code and generates a sequence of code symbols of length r (r=2k−1), a repeater repeats the sequence of code symbols t times ( t = ⌊ N r ⌋ + 1 ) , and a puncturer performs puncturing A times (A=rt−N) on the t repeated code symbol sequences so that the resulting codes have length N. The punctured symbols are distributed uniformly across the repeated code symbol sequences or confined to the tth repeated code symbol sequence.
    • 提供了一种CDMA通信系统中的编码装置和方法。 为了对k位序列的输入信息进行编码并生成长度为N>(2≤K≤1)的码字,编码器使用(r,k)单码进行编码,并产生 长度为r(r = 2K-1)的码符号序列,中继器重复码元序列t次 t = N r + 1 对t个重复码符号序列进行A次打孔(A = rt-N),使得所得到的码具有长度N.穿孔符号均匀地分布在重复的码符号序列上或限于第t / 重复代码符号序列。