CN1116475A - 码分多址系统的快速正向链路功率控制 - Google Patents

码分多址系统的快速正向链路功率控制 Download PDF

Info

Publication number
CN1116475A
CN1116475A CN94190956A CN94190956A CN1116475A CN 1116475 A CN1116475 A CN 1116475A CN 94190956 A CN94190956 A CN 94190956A CN 94190956 A CN94190956 A CN 94190956A CN 1116475 A CN1116475 A CN 1116475A
Authority
CN
China
Prior art keywords
data
sequence
rate
data sequence
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN94190956A
Other languages
English (en)
Other versions
CN1065995C (zh
Inventor
查尔斯·惠特列三世
罗伯托·帕多瓦尼
伊弗雷姆·策哈维
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of CN1116475A publication Critical patent/CN1116475A/zh
Application granted granted Critical
Publication of CN1065995C publication Critical patent/CN1065995C/zh
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H04L1/0019—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy in which mode-switching is based on a statistical approach
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0046—Code rate detection or code type detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • H04L1/0069—Puncturing patterns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/20—TPC being performed according to specific parameters using error rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate

Abstract

本发明的功率控制方法能使移动无线电话连续地更新基站所需的输出功率。基站以特定速率向移动站发送信号帧。如果移动站正确接收和译码该帧，就在下一个要发给基站的帧中设置功率控制位。根据接收到的功率控制位的错误率，基站确定是提高还是降低发射功率。

Description

码分多址系统的快速正向链路功率控制
技术领域
本发明一般涉及通信系统，尤其涉及码分多址系统的功率控制。
背景技术
美国联邦通信委员会(FCC)管理美国无线电频谱的使用，由它决定哪些产业占用哪些频率。由于无线电频率是有限的，因此，各产业仅能分配到一小部分频谱。所以，对分配到的频谱必须有效地利用，以使尽可能多的频率使用者有进入该频谱的机会。
多址调制技术是无线电频谱利用最有效技术中的一部分。这些调制技术的例子包括时分多址(TDMA)、频分多址(FDMA)和码分多址(CDMA)。
CDMA调制使用了扩展频谱技术来传输信息。扩展频谱系统使用了一种把传输的信号扩展到宽频带上。该频带通常基本上比传输该信号所需要的最小带宽要宽。扩展频谱技术通过用唯一的宽带扩展码对各待发送的基带数据信号进行调制来实现的。使用该种技术，可以把只有几千赫兹带宽的信号扩展到超过一兆赫兹的带宽。扩展频谱技术的典型例子可以查阅《扩展频谱通信》(“Spread SpectrumCommunications”)第i卷第262—358页(M.K.Simon著)。
通过把所发送的信号扩展到宽阔的频率范围，就形成一种频率分集。由于一般频率选择性衰落仅影响信号的200—300KHz部分，所以其余的发送信号频谱并不受影响。因此，接收扩展频谱信号的接收机将较少受衰落的影响。
在CDMA型无线电话系统中，在相同频率上同时发送多路信
在CDMA型无线电话系统中，在相同频率上同时发送多路信号。然后，由特定接收机用信号中的唯一扩展码确定哪个信号是供该接收机用的。那些在该频率上但无供该特定的接收机用的特定的扩展码的信号，对于该接收机来说被认为是噪声，并被忽略。
图1示出了在无线电话系统的反向信道上使用的典型的现有技术的CDMA发射机，反向信道指移动站到基站的链路。首先由声码器(声音编码/译码器)产生数字基带信号。声码器100用诸如在该技术领域内众所周知的码激线性预测(CELP)等编码方法对模拟话音或数据信号进行数字化。
把数字基带信号以特定的速率(如9600bps)输入到传统的编码器101内。编码器101以传统的方式用固定的编码速率把输入数据比特编码成数据码元。例如，编码器101可以以1数据比特对应3码元的固定的编码速率对数据比特进行编码，使编码器101对9600bps的输入速率，输出码元的速率为28.8ksym/s。
把编码器的数据码元输入至交错器102。交错器102倒置这些码元使丢去的码元不是连接的。因此，如果在通信信道中丢失一个码元，则纠错码可以恢复该信息。数据码元以列矩阵的形式输入到交错器102，并以行矩阵的形式从交错器102输出。交错以与输入数据码元相同的28.8ksym/s速率进行。
把经交错的数据码元输入到调制器104。调制器从已交错数据码元中取出长度固定的沃尔什(Walsh)码序列。在64进制正交码的传信中，把已交错数据码元分组成6个一集，从64个正交码中选出一个来表示内含6个数据码元的集。这64个正交码通过64×64Hadamard矩阵与Walsh码对应，该矩阵中，Walsh码为其一行或一列。调制器向“异”门组合器107的一端以固定的码元速率输出对应于输入数据码元的Walsh码序列。
伪随机噪声(PN)发生器103使用长PN序列产生用户专用码与长PN序列进行求“异”来产生该序列，使该序列专用于该无线电话用户。长PN发生器103以系统的扩展速率输入和输出数据。PN发生器103的输出被耦合到“异”门组合器107。
接着把组合器107所输出Walsh码的扩展码元正交扩展。这些码元输入到两个“异”门组合器108和109，产生一对短PN序列。第一组合器108对Walsh码的扩展码元与同相位(I)序列105进行求“异”，第二组合器109对Walsh码扩展码元与正交相位(Q)序列106进行求“异”。
产生的I和Q信道码扩展序列被用于通过驱动一对正弦波信号的功率电平来二相调制该对正交正弦波信号。然后把正弦输出信号相加，进行带通滤波，转换成RF频率，再经过放大、滤波，由无线发射。
在作为基站到移动站的链路的无线电话系统正向信道上使用的典型现有技术的CDMA发射机与反向信道中的相似。该发射机图示在图4中。正向和反向信道发射机之间的区别是正向信道发射机增加了一个Walsh码发生器401和在PN发生组合器107和正交扩展组合器108和109之间增加了一个功率控制位复接器420，用于正向信道发射机。
功率控制位复接器420复接一功率控制位，代替帧中的另一位。移动站知道该位的位置并在该位置上寻找上述控制位。一个例子是，“0”位指示移动站把其平均输出功率增加到预定值，“1”位指示移动站把其平均输出功率减小到预定值。
码分信道选择发生器401被耦接到组合器402上，并向组合器402提供特定的Walsh码。发生器401提供64个正交码中的一个，此64个正交码对应于从64×64Hadamard矩阵来的64Walsh码，Walsh码是矩阵中的一行或一列。组合器402用码分信道发生器401输入的特定Walsh码，把输入的倒置数据码元扩展成Walsh码401输入的特定Walsh码，把输入的倒置数据码元扩展成Walsh码的扩展数据码元。“异”门组合器402输出Walsh码的扩展数据码元，并以1.2288Mchp/s固定的筹元速率输出到正交扩展组合器。
移动站可以通过在反向链路上向基站发射功率控制信息来帮助基站控制正向信道上的功率。移动站收集其错误运行的统计数，并通过功率控制信息告知基站。然后基站可以调整对具体用户的功率。
上述的这种类型的功率控制的问题是，对于正向链路控制，功率控制信息代替了话音或数据比特，由此，降低了话音或数据的吞吐质量。这个问题从根本上限制了移动站可以向基站发送功率控制信息的速率，同样也限制了基站调整对该具体的移动站的输出功率。更新速率高的发射功率调整可以使基站把对各独立的移动站的发射功率调谐到维持规定的链路质量所需的最小的量上。通过使各独立的发射功率最小，也使产生的全部干扰最小，因而改善了系统的容量。这就导致必须以较高的速率更新发射机的功率输出，而基本上不降低数据的发送质量。
发明内容
本发明的方法能使发射机更新对正在按帧进行通信的各移动站的功率输出。该方法是通过从移动站到基站的反馈机构来实现的。通过反馈机构，移动站利用包括在发射给基站的每个帧内的信息告知基站是否正在正确地接收进行通信的帧。
该方法首先确定是否要提高或降低通信已经建立的发射机的功率输出。然后，通过包括在所发射各帧数据中的功率控制位通知该发射机改变其功率。
本发明的方法的另一个实施例能使通信链路有一数据速率较高的输入信号，而维持输出信号数据速率恒定。首先该方法对输入数据信号进行卷积编码，产生多个卷积编码信号。各卷积编码信号包含多个数据码元。把各数据码元重复预定次数，以预定的固定速率产生码重复数据序列。然后，穿凿该数据序列，删除在该序列预定位置上的一些码元，产生以低于原来的数据序列的预定的固定速率的数据序列。将带有重复数据码元的编码信号复接以产生数据序列。
附图概述
图1示出了典型的现有技术的CDMA的用于无线电话系统内的反向链路发射机。
图2示出了本发明的用于CDMA无线电话系统的正向通信链路的处理过程。
图3示出了本发明的用于CDMA无线电话系统的移动站的处理过程。
图4示出了典型的现有技术的CDMA的用于无线电话系统内的正向链路发射机。
图5示出了本发明的正向链路功率控制过程。
本发明的实施方式
本发明的数据速率可变的通信链路处理过程能使输入到卷积编码器的信号的数据速率可变而已编码信号的数据速率不变。这使得能使用质量较高的话音信道、较快速的传真或数据信道而不提高19.2kbps的输出速率。通过穿凿1/2比率卷积码获得3/4比率卷积码，来达到数据速率可变。例如，用1/2比率卷积码对9600bps固定输入数据速率编码产生9600.2＝19.2kpbs的固定的输出数据速率。同样，用3/4比率卷积码对14400bps的固定输入数据速率编码产生14400·4/3＝19.2kbps的固定输出数据速率。
图2示出了本发明的正向通信链路处理过程。该过程从数据信号I(D)开始，输入到卷积编码器201，此过程能使该信号的数据速率变化，并高至14.4kbps。在较佳实施例中，卷积编码器201为1/2比率的编码器。
卷积编码具有生成多项式G1＝753和G2＝561。在多项式符号中，生成多项式表为：
G1(D)＝1＋D＋D2＋D3＋D5＋D7＋D8
G2(D)＝1＋D2＋D3＋D4＋D58
由于这是1/2比率的编码器(201，对于每一输入到编码器201的二进制位来说，将输出2个码元。举例来说，如果输入信号包含位b0，b1和b2，则对于G1的输出码元序列为C11，C12，C13，C14，C15，C16…，对于G2的输出码元序列为C21，C22，C23，C24，C25，C26…。因此，不用本发明的处理过程，输入必须为9.6kbps，以维持标准的19.2kbps的1/2比率编码器的输出。
过程的下一步重复各输出码元202，203，并插入到码元序列中。用语言编码器或数据业务控制器设置数据速率，所以知道需要插入多少个重复的码元来获得适当的数据速率。在较佳实施例中，把码元重复一次，所以输出码元序列，
对于G1为：C11，C11，C12，C12，C13，C13，C14，C14，C15，C15，
          C16，C16…
对于G2为：C21，C21，C22，C22，C23，C23，C24，C24，C25，C25，
          C26，C26…。
用复接器204对这些码元序列进行并串转换。把两列码元序列以14.4kbps的速率输入到复接器204内，并以数据速率为28.8kbps的单路序列从该复接器输出。该复接步骤产生下列码元序列：
 C11，C21，C11，C21，C12，C22，C12，C22，C13，C23，C13，C23，C14，C24，C14，C24，C15，C25，C15，C25，C16，C26，C16，C26…。
然后，把110101用作穿凿模式对该序列进行穿凿，每个0为穿凿位。该模式通过从该码元序列中删除所有位于6n＋3和6n＋5位置上的位来实现，其中n为0到∞范围内的整数。另一些实施例可以在不同的位置以不同的比率穿凿码元序列。这种操作的结果是得到如下码元序列：
 C11，C21，C21，C22，C12，C22，C23，C23，C14，C24，C24，C25，C15，C25，C26，C26…
然后把这些码元输入至块交错器207。本技术领域的熟练人员应当理解，在另一些实施例中可以使用其它类型的交错，而不脱离本发明的范围。交错器207以与输入时相同的数据码元速率19.2kbps输出经交错的数据码元。把经交错的码元序列输入至“异”门组合器226的一个输入端。
为了使衰落或干扰引起数据序列内出现较大间隙的机率减小，需要进行交错。在码元也被重复的情况下，丢失一个码元未必引起数据全部丢失，因此改善了性能。
长伪噪声(PN)发生器220耦连到“异”门组合器226的另一个输入端，向该组合器226提供扩展序列。长PN发生器220使用长PN序列以固定速率产生一用户专用码元序列或唯一的用户码，在较佳实施例中，该固定速率为19.2kbps。除了提供一标识以便用户通过通信信道传送业务信道数据位之外，通过置乱业务信道数据位，唯一的用户码还提高了通信信道中通信的保密性。“异”门组合器226用长PN发生器220输入的唯一的用户码把Walsh编码的数据码元扩展成用户码扩展数据码元。“异”门组合器226进行的这种扩展使业务信道数据位扩展到数据码元的总数成倍增加。“异”门组合器226以固定的筹元速率输出用户码扩展码元，在较佳实施例中，该速率为1.228Mchp/s。
把码扩展码元输入到组合器260，该组合器226还与提供特定长度Walsh码的码分信道选择发生器250耦合。发生器250向组合器260提供64个正交码中的一个，此64个正交码与64×64Hadamard矩阵中的64个Walsh码对应，其中Walsh码是该矩阵中的一行或一列。组合器260用码分信道发生器250输入的特定的Walsh码把输入的倒置数据码元扩展成Walsh码覆盖的数据码元。“异”门组合器260输出Walsh码覆盖的数据码元，并以1.2288Mchp/s的固定筹元速率输入至正交覆盖组合器227和229。
I信道PN发生器225和Q信道PN发生器228产生一对短PN序列(即，与长PN发生器220所用的长PN序列相比为短。这些PN发生器225和228可以产生相同或不同的短PN序列。“异”门组合器227和229进一步分别用I信道PN发生器225和Q信道PN发生器228产生的短PN序列扩展输入的Walsh码扩展数据。产生的I信道码扩展序列和Q信道码扩展序列用于通过驱动一对正弦波信号的功率电平控制来二相调制该对正交正弦波。把这些正弦波信号相加，进行带通滤波、转换成BF频率后，再进行放大、滤波，并通过天线发射，完成码元序列在正向通信链路上的发送。
在CDMA蜂窝区无线电话系统中，需要一种方法在移动无线单元中解释在正向通信链路上发送的码元序列。图3示出了本发明的这种移动单元的处理过程。
首先移动单元解调接收到的码元序列301。然后把经解调的信号输入至反交错器302以翻转正向链路处理时的交错。这一操作的结果是得到原来的码元序列，包括输入到正向链路的交错器时的重复码元。
然后对输出码元序列进行处理，插入在正向链路穿凿时删除的码元303。由于接收的移动站有与基站相同的穿凿模式，它知道哪些码元被删除，所以用空白空间代替这些被删除的码元，也称为揩除码元。该操作的输出如下，其中E为揩除码元：
C11，C21，E；C21，E，C22，C12，C22，E，C23，E，C23，C14，C24，E，C24，E，C25，C15，C25，E，C26，E，C26…
然后把该序列输入到缓冲器304暂时存储。缓冲器可使维特比(Viterbi)译码器对该码元序列进行多次处理以决定数据速率。
维特比译码器305还如现有技术中所公知的分配给揩除码元一个无效的量。维特比译码器的输出为数字数据，由数模转换器306转换成模拟信号。然后，该模拟信号可以用于驱动移动单元内的扬声器307。
在正向和反向信道上发送的码元被格式化成帧的形式，每帧长度为20毫秒。Padovani等人的共同待批专利申请US序列号.07/822,164已转让给本发明的受让人)更详细地解释了这些帧。每帧上发送的数据量与数据速率有关。下表示出了正向和反向信道各数据速率的帧构成：
原#位   CRC  尾部  保留位   信息位   速率
 2881447236   121086    8888     3222    2651245420  13250620027001000
表中所列的速率为信息位速率。在较佳实施例中，正向和反向信道的保留位用于传信、功率控制以及将来的用途。
如图5所示，在反向信道上，用本发明的功率控制方法可以控制正向信道发射机的发射功率。下面将把功率控制方法描述成用于CDMA蜂窝区无线电话系统，但该方法也可以用于其它通信系统。
陆上通信网络的选择器确定把帧传送给移动站的速率501，并把该帧传送给与该特定的移动站通信的所有基站。选择器是基站的一部分，它可响应于基站的呼叫处理请求。
在软切换期间，一个以上的基站与移动站进行通信。基站向移动站发射帧505，在组合了多个基站所发的数据之后，移动站确定是否已接收到最后一帧，并正确译码510。如果移动站对最后一帧正确译码，则移动站在发送给基站的下一帧内设置功率控制位520。
由于选择器知道它发送最后一帧给移动站的速率，并且现在已经有移动站是否对该帧正确译码的反馈，所以选择器编制移动站在各速率上发生的错误率的统计表。只在接收到从移动站的反向链路来的包含有反馈位的帧，并正确译码时，表中“正确接收”项才进位515。
 全速率时的TX   1/2速率时的TX   1/4速率时的TX  1/8速率时的TX
  RX正确删除总计错误率     I1I2I＝I1＋I2I2/I      J1J2J＝J1＋J2J2/J       K1K2K＝K1＋K2K2/K      L1L2L＝L1＋L2L2/L
选择器还为各个速率留有一预定目标错误率T1、T2、T3和T4的表格。如果把本发明用于蜂窝区无线电话系统，可以由蜂窝区业务营运公司设置这些错误率，以提供具体的服务等级。
接着选择器计算下面的差值：
E1＝I2/I－T1
E2＝J2/J－T2
E3＝K2/K－T3
E4＝L2/L－T4
选择器通过把刚计算得到的各个差值与零比较来确定下一帧发射的功率级。例如，如果以全速率并且E1＞0来发射帧530，则功率电平将为P额定＋P535，其中P是E值的函数，P额定是营运公司为该地理区域设定的功率电平。如果E1＝0(540)，则功率电平将为P额定545。如果E1＜0，则功率电平将为P额定－P550。其它数据速率也采用相同的过程。选择器把下一要发射给移动站的帧传给正与该移动站通信的基站。该帧内含有其发射功率电平的指示。
本发明的另一些实施例根据输入到译码器的数据速率，在码元序列内插入一个以上的各个码元的重复码元。例如，如果输入译码器的数据速率为2.4kbps。则在输出序列中还应重复三次，总计4个相同的码元，以维持19.2kbps的输出数据速率。通过加入较多或较少的重复码元，可以改变输入数据速率，同时维持电子工业协会/电话工业协会的CDMA临时技术规范IS-95所要求的19.2kbps的输出。
另一些实施例可以先进行穿凿，穿凿之后再重复。然而，如果在重复之前穿凿码元，则最佳实施例并不使这样做的码元受损。先重复，穿凿之后重复的码元仍然存在，因而该信息仍然可以被发送。
另一些实施例还可以要求与CDMA技术规范所要求的基站到移动站的19.2kbps速率不同的输出速率，这种实施例的一个例子是技术规范要求速率为28800bps的移动站到基站的链路。在这种情况下，14400bps信息速率配合1/2比率的卷积码，可得所希望的14400·2＝28800bps。
通过穿凿1/2比率卷积码获得3/4比率卷积码，本发明的方法能使编码器支持较高的数据速率，同时保持输出速率恒定不变。穿凿方法和码元重复方法还能使译码器支持可变的数据速率，如14.4、7.2、3.6以及1.8kbps，同时通过增加码元的重复次数来使编码器的输出稳定在19.2kbps上。在能在CDMA无线电话系统中工作的无线电话内使用穿凿方法，实现了高质量话音、高速数据和传真的发送。
本发明的快速正向功率控制方法能使移动站指示基站以较快的速率改变其功率输出。该方法能使移动站与帧发送功率改变命令而不损害声音或数据质量。
本发明的快速正向功率控制方法远补偿了与在基站到移动站链路上穿凿1/2比率码相关的性能下降。与0.2Hz速率的通过用功率控制信息代替整个帧的其它传信方法能实现的功率控制相比，本发明的快速正向功率控制方法能使移动站指示各基站以50Hz的速率(每帧)调整其功率输出。本方法能使移动站使用每帧的一个信息位在每个数据帧发送功率改变请求，因而不降低话音质量，也不显著地降低数据吞吐量。

Claims (7)

1.一种提供速率可变的数据通信链路的方法，该方法包含下列步骤：
对输入数据信号进行卷积编码，产生多个第一卷积编码信号，每个卷积编码信号包含多个数据码元；
把各数据码元重复预定的次数，产生多个包含重复的数据码元的第二卷积编码信号；
复接多个第二卷积编码的信号，产生数据序列；以及
穿凿数据序列，删除在数据序列的预定位置上的数据码元。
2.如权利要求1所述的方法，其特征在于，各6n＋3和6n＋5数据码元在数据序列中被穿凿。
3.如权利要求1所述的方法，其特征在于，卷积编码以1/2比率进行。
4.如权利要求1所述的方法，其特征在于，进一步包括对各删除的码元分配一个无效的量。
5.一种使输入的数据信号以可变的速率输入至卷积编码器且维持从卷积编码器输出的数据速率恒定的方法，卷积编码器工作在无线电话中，该无线电话能通过码分多址通信系统中的正向和反向通信链路与基站进行通信，其特征在于，该方法包含下列步骤：
以1/2比率对输入数据信号进行卷积编码；产生两路包含多个数据码元的编码输出信号；
在各编码输出信号内重复各数据码元；
复接各编码输出信号的重复数据码元，形成第一数据序列；
删除数据序列中每隔6n＋3和6n＋5处的数据码元，产生经穿凿的数据序列，其中n为0到∞范围内的整数；
调制经穿凿的数据序列；
通过正向通信链路发送经穿凿的数据序列；
基站接收经穿凿的数据序列；
解调接收到的数据序列；
在已解调的数据序列中每隔6n＋3和6n＋5个数据码元插入一无效的量，产生第二数据序列；
对第二数据序列进行译码；
数模转换经译码的第二数据序列。
6.如权利要求5所述的方法，其特征在于，输入数据信号的数据速率为14.4kbps，输出信号的数据速率为19.2kbps。
7.一种由第二通信装置控制第一通信装置功率的方法，第一通信装置以至少一种数据速率通过正向通信信道进行发送，第二通信装置通过反向通信信道进行发送，其特征在于，该方法包含下列步骤：
第一通信装置在正向通信信道上发送多个帧，多个帧中的第一帧以至少一种数据速率中的第一种数据速率进行发送；
第二通信装置对多个帧进行译码；
第二通信装置响应于对多个译码帧中各个译码帧的译码，向第一通信装置提供反馈；
根据该反馈，确定至少一种数据速率中的各种数据速率的错误率；
如果错误率大于预定阈值，就把第一通信装置的功率调整到第一预定级；
如果错误率等于预定阈值，就把第一通信装置的功率调整到第二预定级；
如果错误率小于预定阈值，把第一通信装置的功率调整到第三预定级。
CN94190956A 1993-11-22 1994-11-22 提供速率可变的数据通信链路的方法 Expired - Lifetime CN1065995C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/156,125 US5383219A (en) 1993-11-22 1993-11-22 Fast forward link power control in a code division multiple access system
US08/156,125 1993-11-22

Publications (2)

Publication Number Publication Date
CN1116475A true CN1116475A (zh) 1996-02-07
CN1065995C CN1065995C (zh) 2001-05-16

Family

ID=22558210

Family Applications (1)

Application Number Title Priority Date Filing Date
CN94190956A Expired - Lifetime CN1065995C (zh) 1993-11-22 1994-11-22 提供速率可变的数据通信链路的方法

Country Status (21)

Country Link
US (2) US5383219A (zh)
EP (5) EP1487130B1 (zh)
JP (1) JP3177626B2 (zh)
KR (1) KR100337968B1 (zh)
CN (1) CN1065995C (zh)
AT (5) ATE357777T1 (zh)
AU (1) AU678874B2 (zh)
BR (1) BR9405789A (zh)
CA (1) CA2153700C (zh)
DE (5) DE69435335D1 (zh)
DK (3) DK0680675T3 (zh)
ES (5) ES2281590T3 (zh)
FI (4) FI112833B (zh)
HK (4) HK1015192A1 (zh)
IL (2) IL111689A (zh)
PT (3) PT680675E (zh)
RU (1) RU2128397C1 (zh)
SI (1) SI0680675T1 (zh)
TW (1) TW328192B (zh)
WO (1) WO1995015038A2 (zh)
ZA (1) ZA948424B (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1722644A (zh) * 1997-12-10 2006-01-18 三菱电机株式会社 通信控制方法
CN100338887C (zh) * 1999-07-23 2007-09-19 高通股份有限公司 控制选通发送通信系统的方法和设备
CN100456665C (zh) * 2002-08-09 2009-01-28 高通股份有限公司 在无线通信系统中用于改善质量反馈可靠性的系统和方法
CN1879374B (zh) * 2003-09-17 2011-04-06 艾瑟罗斯通讯公司 无线系统的重复编码
CN101237239B (zh) * 2008-03-03 2011-11-30 黄知涛 一种(n-1)/n码率的删除卷积码的盲识别方法
CN1983838B (zh) * 1997-06-17 2012-06-20 高通股份有限公司 产生高速信道的方法和系统
CN101197602B (zh) * 1999-04-14 2012-06-27 诺基亚公司 用于控制传输功率的方法
CN102158940B (zh) * 2006-08-08 2012-11-14 电信科学技术研究院 高速上行分组接入中重传确认指示信道的功率控制方法及装置
CN105636179A (zh) * 2014-11-27 2016-06-01 华为终端（东莞）有限公司 一种发射功率的确定方法及装置

Families Citing this family (232)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE460449B (sv) * 1988-02-29 1989-10-09 Ericsson Telefon Ab L M Cellindelat digitalt mobilradiosystem och foerfarande foer att oeverfoera information i ett digitalt cellindelat mobilradiosystem
SE8802229D0 (sv) 1988-06-14 1988-06-14 Ericsson Telefon Ab L M Forfarande vid mobilradiostation
US5668795A (en) * 1992-11-24 1997-09-16 Stanford Telecommunications, Inc. Modulation system for spread spectrum CDMA communiction
US5687166A (en) * 1992-11-24 1997-11-11 Stanford Telecommunications, Inc. Modulation system for spread spectrum CDMA communication
JP3349778B2 (ja) * 1993-07-16 2002-11-25 松下電器産業株式会社 可変レート通信におけるレート判定方法およびその装置
JP2526510B2 (ja) * 1993-10-22 1996-08-21 日本電気株式会社 無線デ―タ通信装置
US6005856A (en) 1993-11-01 1999-12-21 Omnipoint Corporation Communication protocol for spread spectrum wireless communication system
US6094575A (en) 1993-11-01 2000-07-25 Omnipoint Corporation Communication system and method
US6088590A (en) 1993-11-01 2000-07-11 Omnipoint Corporation Method and system for mobile controlled handoff and link maintenance in spread spectrum communication
US5436941A (en) * 1993-11-01 1995-07-25 Omnipoint Corporation Spread spectrum spectral density techniques
US5383219A (en) * 1993-11-22 1995-01-17 Qualcomm Incorporated Fast forward link power control in a code division multiple access system
US5491718A (en) * 1994-01-05 1996-02-13 Nokia Mobile Phones Ltd. CDMA radiotelephone having optimized slotted mode and long code operation
FI94579C (fi) * 1994-01-12 1995-09-25 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä
CN1129263C (zh) * 1994-02-17 2003-11-26 摩托罗拉公司 分组编码信号的方法和装置
US5751739A (en) * 1994-04-29 1998-05-12 Lucent Technologies, Inc. Methods of and devices for enhancing communications that use spread spectrum technology
CA2145566C (en) * 1994-04-29 1999-12-28 Nambirajan Seshadri Methods of and devices for enhancing communications that use spread spectrum technology
JP2980156B2 (ja) * 1994-05-12 1999-11-22 エヌ・ティ・ティ移動通信網株式会社 送信電力制御方法および該制御方法を用いたスペクトル拡散通信装置
US5603096A (en) * 1994-07-11 1997-02-11 Qualcomm Incorporated Reverse link, closed loop power control in a code division multiple access system
US5987014A (en) * 1994-07-14 1999-11-16 Stanford Telecommunications, Inc. Multipath resistant, orthogonal code-division multiple access system
US5692007A (en) 1994-09-09 1997-11-25 Omnipoint Corporation Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation
US5856998A (en) 1994-09-09 1999-01-05 Omnipoint Corporation Method and apparatus for correlating a continuous phase modulated spread spectrum signal
US5832028A (en) 1994-09-09 1998-11-03 Omnipoint Corporation Method and apparatus for coherent serial correlation of a spread spectrum signal
US5953370A (en) 1994-09-09 1999-09-14 Omnipoint Corporation Apparatus for receiving and correlating a spread spectrum signal
US5757847A (en) 1994-09-09 1998-05-26 Omnipoint Corporation Method and apparatus for decoding a phase encoded signal
US5754584A (en) 1994-09-09 1998-05-19 Omnipoint Corporation Non-coherent spread-spectrum continuous-phase modulation communication system
US5610940A (en) 1994-09-09 1997-03-11 Omnipoint Corporation Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal
US5680414A (en) 1994-09-09 1997-10-21 Omnipoint Corporation Synchronization apparatus and method for spread spectrum receiver
US5629956A (en) 1994-09-09 1997-05-13 Omnipoint Corporation Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal
US5659574A (en) 1994-09-09 1997-08-19 Omnipoint Corporation Multi-bit correlation of continuous phase modulated signals
US5881100A (en) 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
US5648982A (en) 1994-09-09 1997-07-15 Omnipoint Corporation Spread spectrum transmitter
US5627856A (en) 1994-09-09 1997-05-06 Omnipoint Corporation Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators
US5754585A (en) 1994-09-09 1998-05-19 Omnipoint Corporation Method and apparatus for serial noncoherent correlation of a spread spectrum signal
US5963586A (en) 1994-09-09 1999-10-05 Omnipoint Corporation Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
US5621723A (en) * 1994-09-27 1997-04-15 Gte Laboratories Incorporated Power control in a CDMA network
US5742583A (en) * 1994-11-03 1998-04-21 Omnipoint Corporation Antenna diversity techniques
US5717713A (en) * 1994-11-18 1998-02-10 Stanford Telecommunications, Inc. Technique to permit rapid acquisition and alert channel signalling for base station-to-user link of an orthogonal CDMA (OCDMA) communication system
KR970011690B1 (ko) * 1994-11-22 1997-07-14 삼성전자 주식회사 파일럿트 채널을 이용한 대역확산 통신시스템의 데이타 송신기 및 수신기
WO1996027962A2 (en) * 1995-03-03 1996-09-12 Philips Electronics N.V. Error protected multichannel digital data transmission system and method having graceful degration quality through multi-resolution, and transmitter station and receiver station for use in such system
US6137840A (en) * 1995-03-31 2000-10-24 Qualcomm Incorporated Method and apparatus for performing fast power control in a mobile communication system
US6977967B1 (en) * 1995-03-31 2005-12-20 Qualcomm Incorporated Method and apparatus for performing fast power control in a mobile communication system
TW347616B (en) * 1995-03-31 1998-12-11 Qualcomm Inc Method and apparatus for performing fast power control in a mobile communication system a method and apparatus for controlling transmission power in a mobile communication system is disclosed.
FI97837C (fi) * 1995-04-11 1997-02-25 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä sekä lähetin
US5548253A (en) * 1995-04-17 1996-08-20 Omnipoint Corporation Spectrally efficient quadrature amplitude modulator
US5883899A (en) * 1995-05-01 1999-03-16 Telefonaktiebolaget Lm Ericsson Code-rate increased compressed mode DS-CDMA systems and methods
WO1996038938A2 (en) * 1995-06-02 1996-12-05 Dsc Communications Corporation Apparatus and method of controlling transmitting power and transmit rate of a wireless telecommunications system
US5915216A (en) * 1995-06-02 1999-06-22 Dsc Communications Corporation Apparatus and method of transmitting and receiving information in a wireless telecommunications system
US5832022A (en) * 1995-06-02 1998-11-03 Omnipoint Corporation Method and apparatus for controlling the modulation index of continuous phase modulated (CPM) signals
AU724130B2 (en) * 1995-06-02 2000-09-14 Airspan Networks, Inc. Apparatus and method of controlling transmitting power of a wireless telecommunications system
US6324208B1 (en) 1995-06-02 2001-11-27 Airspan Networks, Inc. Apparatus and method of controlling transmitting power in a subscriber of a wireless telecommunications system
US6356607B1 (en) 1995-06-05 2002-03-12 Omnipoint Corporation Preamble code structure and detection method and apparatus
US5689502A (en) * 1995-06-05 1997-11-18 Omnipoint Corporation Efficient frequency division duplex communication system with interleaved format and timing adjustment control
US5959980A (en) * 1995-06-05 1999-09-28 Omnipoint Corporation Timing adjustment control for efficient time division duplex communication
US5802046A (en) * 1995-06-05 1998-09-01 Omnipoint Corporation Efficient time division duplex communication system with interleaved format and timing adjustment control
US5745484A (en) * 1995-06-05 1998-04-28 Omnipoint Corporation Efficient communication system using time division multiplexing and timing adjustment control
JP3371310B2 (ja) * 1995-06-30 2003-01-27 ソニー株式会社 Ｗａｌｓｈ符号発生装置、信号送信装置及び信号受信装置
US7020111B2 (en) * 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US7929498B2 (en) * 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US6885652B1 (en) * 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US7072380B2 (en) * 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
US7123600B2 (en) * 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US6041046A (en) * 1995-07-14 2000-03-21 Omnipoint Corporation Cyclic time hopping in time division multiple access communication system
FI955206A (fi) * 1995-10-31 1997-05-01 Nokia Telecommunications Oy Tiedonsiirtomenetelmä
US5722051A (en) * 1996-02-13 1998-02-24 Lucent Technologies Inc. Adaptive power control and coding scheme for mobile radio systems
US5884187A (en) 1996-03-13 1999-03-16 Ziv; Noam A. Method and apparatus for providing centralized power control administration for a set of base stations
US5696762A (en) * 1996-03-25 1997-12-09 Stanford Telecommunications, Inc. Rapid-acquisition access channel scheme for CDMA systems
US5842113A (en) * 1996-04-10 1998-11-24 Lucent Technologies Inc. Method and apparatus for controlling power in a forward link of a CDMA telecommunications system
US5909434A (en) * 1996-05-31 1999-06-01 Qualcomm Incorporated Bright and burst mode signaling data transmission in an adjustable rate wireless communication system
KR100548675B1 (ko) * 1996-05-31 2006-03-23 콸콤 인코포레이티드 조정가능한속도의무선통신시스템에서의신호데이터의전송
US5862133A (en) * 1996-08-02 1999-01-19 Golden Bridge Technology Packet-switched spread-spectrum system
JP3818702B2 (ja) 1996-08-07 2006-09-06 松下電器産業株式会社 Ｃｄｍａ無線伝送システム並びに該システムにおいて用いられる送信電力制御装置および送信電力制御用測定装置
KR100498752B1 (ko) 1996-09-02 2005-11-08 소니 가부시끼 가이샤 비트메트릭스를 사용한 데이터 수신장치 및 방법
US20050163084A1 (en) * 1996-09-03 2005-07-28 Golden Bridge Technology, Inc. Packet spread-spectrum transmitter
US5893035A (en) * 1996-09-16 1999-04-06 Qualcomm Incorporated Centralized forward link power control
US7788092B2 (en) * 1996-09-25 2010-08-31 Qualcomm Incorporated Method and apparatus for detecting bad data packets received by a mobile telephone using decoded speech parameters
CA2265640A1 (en) * 1996-09-25 1998-04-02 Qualcomm Incorporated Method and apparatus for detecting bad data packets received by a mobile telephone using decoded speech parameters
US6496543B1 (en) * 1996-10-29 2002-12-17 Qualcomm Incorporated Method and apparatus for providing high speed data communications in a cellular environment
US6141373A (en) 1996-11-15 2000-10-31 Omnipoint Corporation Preamble code structure and detection method and apparatus
US6075974A (en) * 1996-11-20 2000-06-13 Qualcomm Inc. Method and apparatus for adjusting thresholds and measurements of received signals by anticipating power control commands yet to be executed
KR100285327B1 (ko) * 1996-12-02 2001-04-02 박종섭 이동통신시스템의 기지국의 전력제어 유도기능 테스트 방법
US5892774A (en) * 1996-12-12 1999-04-06 Qualcomm Incorporated Phase shift encoded subchannel
FI106666B (fi) * 1997-01-24 2001-03-15 Nokia Networks Oy Tehonsäätömenetelmä epäjatkuvaan lähetykseen
USRE39177E1 (en) * 1997-01-29 2006-07-11 Qualcomm, Inc. Method and apparatus for performing soft hand-off in a wireless communication system
EP0856955A3 (en) 1997-01-29 2000-09-06 YRP Mobile Telecommunications Key Technology Research Laboratories Co., Ltd. CDMA power control system
US6151502A (en) * 1997-01-29 2000-11-21 Qualcomm Incorporated Method and apparatus for performing soft hand-off in a wireless communication system
US5933781A (en) * 1997-01-31 1999-08-03 Qualcomm Incorporated Pilot based, reversed channel power control
US5987326A (en) * 1997-02-11 1999-11-16 Qualcomm Incorporated Transmit power reduction for a high speed CDMA link in soft handoff
US5991284A (en) 1997-02-13 1999-11-23 Qualcomm Inc. Subchannel control loop
WO1998041030A2 (en) * 1997-03-11 1998-09-17 Motorola Inc. Apparatus and method for conveying information in a communicationsystem
US6073025A (en) * 1997-03-26 2000-06-06 Nortel Networks Corporation Base station power control during a soft hand-off
US5963870A (en) * 1997-03-26 1999-10-05 Nortel Networks Corporation Process for switching between IS-95 forward power control and fast forward power control
US6236863B1 (en) 1997-03-31 2001-05-22 Oki Telecom, Inc. Comprehensive transmitter power control system for radio telephones
KR100238401B1 (ko) * 1997-04-22 2000-01-15 김영환 이동통신 시스템의 순방향 전력 제어방법
US6396867B1 (en) 1997-04-25 2002-05-28 Qualcomm Incorporated Method and apparatus for forward link power control
US6002933A (en) * 1997-04-29 1999-12-14 Qualcomm Incorporated Inter-system soft handoff
EP1416678A3 (en) * 1997-05-13 2004-05-26 Matsushita Electric Industrial Co., Ltd. Packet transmitter
US6347217B1 (en) 1997-05-22 2002-02-12 Telefonaktiebolaget Lm Ericsson (Publ) Link quality reporting using frame erasure rates
US6173162B1 (en) 1997-06-16 2001-01-09 Telefonaktiebolaget Lm Ericsson (Publ) Multiple code channel power control in a radio communication system
US6185431B1 (en) 1997-06-18 2001-02-06 Oki Telecom, Inc. Mobile station closed loop output power stability system for weak signal conditions
US5982760A (en) * 1997-06-20 1999-11-09 Qualcomm Inc. Method and apparatus for power adaptation control in closed-loop communications
US6426960B2 (en) 1997-06-24 2002-07-30 Qualcomm Incorporated Increased capacity data transmission in a CDMA wireless communication system
KR100259839B1 (ko) * 1997-06-30 2000-06-15 윤종용 삭제 지시자 비트를 이용한 순방향 전력 제어 방법
US6067458A (en) 1997-07-01 2000-05-23 Qualcomm Incorporated Method and apparatus for pre-transmission power control using lower rate for high rate communication
US6286122B1 (en) * 1997-07-03 2001-09-04 Nokia Mobile Phones Limited Method and apparatus for transmitting DTX—low state information from mobile station to base station
US6055428A (en) * 1997-07-21 2000-04-25 Qualcomm Incorporated Method and apparatus for performing soft hand-off in a wireless communication system
KR100387078B1 (ko) * 1997-07-30 2003-10-22 삼성전자주식회사 대역확산통신시스템의심볼천공및복구장치및방법
KR19990012755A (ko) * 1997-07-30 1999-02-25 윤종용 간섭을 줄이기 위한 역전력 제어장치 및 방법
US6188678B1 (en) 1997-08-07 2001-02-13 Qualcomm Inc. Method and apparatus for adaptive closed loop power control using open loop measurements
US6147981A (en) * 1997-08-07 2000-11-14 Qualcomm Incorporated Method and apparatus for predictive parameter control with loop delay
US6070085A (en) * 1997-08-12 2000-05-30 Qualcomm Inc. Method and apparatus for controlling transmit power thresholds based on classification of wireless communication subscribers
US6097972A (en) * 1997-08-29 2000-08-01 Qualcomm Incorporated Method and apparatus for processing power control signals in CDMA mobile telephone system
US6075815A (en) * 1997-09-17 2000-06-13 Nortel Networks Corporation Symbol-energy-to-noise-density estimation in a QPSK modulated communication system
US6101179A (en) * 1997-09-19 2000-08-08 Qualcomm Incorporated Accurate open loop power control in a code division multiple access communication system
US6185432B1 (en) * 1997-10-13 2001-02-06 Qualcomm Incorporated System and method for selecting power control modes
US20020051434A1 (en) * 1997-10-23 2002-05-02 Ozluturk Fatih M. Method for using rapid acquisition spreading codes for spread-spectrum communications
US7184426B2 (en) * 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
US9118387B2 (en) * 1997-11-03 2015-08-25 Qualcomm Incorporated Pilot reference transmission for a wireless communication system
US6574211B2 (en) * 1997-11-03 2003-06-03 Qualcomm Incorporated Method and apparatus for high rate packet data transmission
JP3355295B2 (ja) * 1997-11-13 2002-12-09 松下電器産業株式会社 送信電力制御方法及び送受信装置
KR100416987B1 (ko) * 1998-03-19 2004-08-04 삼성전자주식회사 통신시스템의부가정보삽입장치및방법
US6831910B1 (en) * 1998-03-23 2004-12-14 Samsung Electronics Co., Ltd. Power control device and method for controlling a reverse link common channel in a CDMA communication system
JP3403740B2 (ja) * 1998-03-26 2003-05-06 サムスン エレクトロニクス カンパニー リミテッド 符号分割多重接続通信システムの直交チャネルと準直交チャネルの電力制御装置及び方法
US6700879B1 (en) * 1998-03-30 2004-03-02 Nortel Networks Limited Modem loop rate adaptation
KR100279713B1 (ko) * 1998-03-31 2001-02-01 윤종용 코드분할다중접속시스템의전력측정보고메시지를이용한순방향전력제어의최적화방법
FI114060B (fi) 1998-04-03 2004-07-30 Nokia Corp Menetelmä ja laitteet tehon säätöön matkaviestinjärjestelmässä
US6233439B1 (en) * 1998-04-08 2001-05-15 Nortel Networks Limited Signal to noise estimation of forward link traffic channel for fast power control
US6373829B1 (en) 1998-04-23 2002-04-16 Motorola, Inc. Method and apparatus for group calls in a wireless CDMA communication system using outbound traffic channels for individual group members
US6181685B1 (en) * 1998-04-23 2001-01-30 Motorola, Inc. Method and apparatus for group calls in a wireless CDMA communication system
US6137994A (en) * 1998-05-29 2000-10-24 Motorola, Inc. Radio communication system and method for setting an output power of a base site therein
US6744754B1 (en) * 1998-06-09 2004-06-01 Lg Information & Communications, Ltd. Control of forward link power CDMA mobile communication system
KR100326183B1 (ko) * 1998-06-13 2002-06-29 윤종용 부호분할다중접속통신시스템에서천공된프레임의전력보상장치및방법
GB9814960D0 (en) * 1998-07-10 1998-09-09 Koninkl Philips Electronics Nv Coding device and communication system using the same
KR100285310B1 (ko) * 1998-07-29 2001-04-02 윤종용 Cdma통신시스템의삭제지시비트를이용한순방향전력제어파라미터제어방법
JP3204310B2 (ja) * 1998-08-12 2001-09-04 日本電気株式会社 Ｃｄｍａ移動通信システムおよびその下り送信電力制御方法
JP4047461B2 (ja) * 1998-08-27 2008-02-13 松下電器産業株式会社 送信電力制御装置及び送受信装置
US6211820B1 (en) * 1998-09-09 2001-04-03 Qualcomm Incorporated Call maintainance during position location
US6377555B1 (en) 1998-09-22 2002-04-23 Jhong Sam Lee Method for determining forward link channel powers for a CDMA cellular or PCS system
GB9821089D0 (en) * 1998-09-30 1998-11-18 Koninkl Philips Electronics Nv Method for the communication of information and apparatus employing the method
US6724813B1 (en) * 1998-10-14 2004-04-20 Telefonaktiebolaget Lm Ericsson (Publ) Implicit resource allocation in a communication system
US6690652B1 (en) 1998-10-26 2004-02-10 International Business Machines Corporation Adaptive power control in wideband CDMA cellular systems (WCDMA) and methods of operation
EP1050124A1 (en) * 1998-11-30 2000-11-08 Nokia Corporation Test facility for transceiver station
US6418137B1 (en) 1998-12-14 2002-07-09 Nortel Networks Limited Transmitted signal power control in cellular communications systems
US6163708A (en) * 1998-12-31 2000-12-19 Nokia Mobile Phones Limited Closed-loop power control method
US6151328A (en) * 1998-12-31 2000-11-21 Lg Information & Communications Ltd. Apparatus and method for controlling power in code division multiple access system
US6366572B1 (en) * 1999-02-04 2002-04-02 Senora Trading Company Wireless communication system with symmetric communication protocol
US6308054B2 (en) 1999-03-02 2001-10-23 Hitachi, Ltd. Diversity wireless communication method and its wireless communication apparatus
US6606341B1 (en) 1999-03-22 2003-08-12 Golden Bridge Technology, Inc. Common packet channel with firm handoff
US6574267B1 (en) 1999-03-22 2003-06-03 Golden Bridge Technology, Inc. Rach ramp-up acknowledgement
US6169759B1 (en) 1999-03-22 2001-01-02 Golden Bridge Technology Common packet channel
US6337975B1 (en) 1999-04-02 2002-01-08 Qualcomm Inc. System and method for power measurement in outdoor antenna units
US6473603B1 (en) 1999-04-02 2002-10-29 Qualcomm, Inc. System and method for temperature compensation of external antenna units
US6600929B1 (en) 1999-04-02 2003-07-29 Qualcomm, Incorporated Power output control of a car kit by a coupled wireless device
US6249683B1 (en) 1999-04-08 2001-06-19 Qualcomm Incorporated Forward link power control of multiple data streams transmitted to a mobile station using a common power control channel
US6690938B1 (en) 1999-05-06 2004-02-10 Qualcomm Incorporated System and method for reducing dropped calls in a wireless communications network
US6731948B1 (en) * 1999-05-12 2004-05-04 Samsung Electronics Co., Ltd. Method for supporting a discontinuous transmission mode in a base station in a mobile communication system
US6253085B1 (en) * 1999-05-27 2001-06-26 Qualcomm Incorporated Forward power gain adjustment during a soft handoff operation
US6539213B1 (en) 1999-06-14 2003-03-25 Time Domain Corporation System and method for impulse radio power control
US7649925B2 (en) * 1999-06-14 2010-01-19 Time Domain Corporation Time transfer utilizing ultra wideband signals
KR100330243B1 (ko) * 1999-06-28 2002-03-25 윤종용 불연속 전송모드 이동통신 시스템의 순방향 전력 제어장치 및 방법
IL141800A0 (en) * 1999-07-06 2002-03-10 Samsung Electronics Co Ltd Rate matching device and method for a data communication system
US6621808B1 (en) 1999-08-13 2003-09-16 International Business Machines Corporation Adaptive power control based on a rake receiver configuration in wideband CDMA cellular systems (WCDMA) and methods of operation
US8064409B1 (en) 1999-08-25 2011-11-22 Qualcomm Incorporated Method and apparatus using a multi-carrier forward link in a wireless communication system
KR100404183B1 (ko) * 1999-08-26 2003-11-03 엘지전자 주식회사 채널화 코드에 대한 레이트 매칭 방법
US6728520B2 (en) 1999-08-31 2004-04-27 Qualcomm Incorporated System and method for constant loop gain in a closed loop circuit
US6621804B1 (en) * 1999-10-07 2003-09-16 Qualcomm Incorporated Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel
EP1222763B1 (de) * 1999-10-07 2007-11-07 Siemens Aktiengesellschaft Verfahren zur anpassung der datenrate in einer kommunikationsvorrichtung
US6643318B1 (en) 1999-10-26 2003-11-04 Golden Bridge Technology Incorporated Hybrid DSMA/CDMA (digital sense multiple access/code division multiple access) method with collision resolution for packet communications
KR100386562B1 (ko) * 1999-11-01 2003-06-02 엘지전자 주식회사 순방향 공통 채널의 전력 제어 방법
US6519239B1 (en) 1999-11-19 2003-02-11 Motorola, Inc. Method and apparatus for providing dispatch service in a CDMA communication system
EP1234422A4 (en) 1999-11-29 2006-10-18 Golden Bridge Tech Inc PERFORMANCE CONTROL IN CLOSED LOOP FOR COMMON DOWNWARD TRANSPORT CHANNEL
US6757319B1 (en) 1999-11-29 2004-06-29 Golden Bridge Technology Inc. Closed loop power control for common downlink transport channels
US6324209B1 (en) * 2000-02-28 2001-11-27 Golden Bridge Technology Inc. Multi-channel spread spectrum system
JP2001268637A (ja) * 2000-03-15 2001-09-28 Nec Corp 移動機及び基地局並びにそれ等を用いた移動通信システム
AU4476401A (en) * 2000-03-21 2001-10-03 Samsung Electronics Co Ltd Encoding apparatus and method in cdma communication system
US6980527B1 (en) 2000-04-25 2005-12-27 Cwill Telecommunications, Inc. Smart antenna CDMA wireless communication system
AU2001261070A1 (en) 2000-05-01 2001-11-12 Interdigital Technology Corporation Downlink power control for multiple downlink time slots in tdd communication systems
US6671515B1 (en) 2000-06-06 2003-12-30 Motorola, Inc. Method and apparatus for selecting communication cells in a wireless communication system
CA2313290A1 (en) * 2000-06-30 2001-12-30 Frank Van Heeswyk Adaptive rate power control cdma system
KR100781240B1 (ko) * 2000-11-09 2007-11-30 엘지전자 주식회사 차세대 이동통신 시스템에서의 데이터 레이트 매칭 방법
US6853675B1 (en) 2000-08-10 2005-02-08 Umbrella Capital, Llc Methods and systems for optimizing signal transmission power levels in a spread spectrum communication system
US6959033B1 (en) 2000-08-25 2005-10-25 Texas Instruments Incorporated System and method for assigning combiner channels in spread spectrum communications
CA2319287A1 (en) 2000-09-14 2002-03-14 Ramesh Mantha System and method for allocating power
US6771691B1 (en) 2000-09-15 2004-08-03 Texas Instruments Incorporated System and method for extracting soft symbols in direct sequence spread spectrum communications
US7031374B1 (en) 2000-10-06 2006-04-18 Texas Instruments Incorporated System and method for selecting sample streams in direct sequence spread spectrum communications
CN1290270C (zh) * 2000-10-09 2006-12-13 皇家菲利浦电子有限公司 信息通信的方法和使用该方法的设备
US6718180B1 (en) 2000-10-24 2004-04-06 Telefonaktiebolaget Lm Ericsson (Publ) Power level convergence in a communications system
US6973098B1 (en) * 2000-10-25 2005-12-06 Qualcomm, Incorporated Method and apparatus for determining a data rate in a high rate packet data wireless communications system
US7068683B1 (en) 2000-10-25 2006-06-27 Qualcomm, Incorporated Method and apparatus for high rate packet data and low delay data transmissions
US6862273B2 (en) * 2001-01-10 2005-03-01 Motorola, Inc. Method and apparatus for providing dispatch scan in a CDMA communication system
US6763483B2 (en) * 2001-01-26 2004-07-13 Dell Products L.P. Method of optimizing the use of radio devices in a computing system
US7120134B2 (en) 2001-02-15 2006-10-10 Qualcomm, Incorporated Reverse link channel architecture for a wireless communication system
US6928063B2 (en) * 2001-03-16 2005-08-09 Motorola, Inc. Method and apparatus for providing a dispatch patch service in a CDMA communication system
US8199696B2 (en) * 2001-03-29 2012-06-12 Qualcomm Incorporated Method and apparatus for power control in a wireless communication system
US20030021271A1 (en) * 2001-04-03 2003-01-30 Leimer Donald K. Hybrid wireless communication system
US6987799B2 (en) * 2001-05-03 2006-01-17 Texas Instruments Incorporated System and method for demodulating associated information channels in direct sequence spread spectrum communications
US6978151B2 (en) * 2001-05-10 2005-12-20 Koninklijke Philips Electronics N.V. Updating path loss estimation for power control and link adaptation in IEEE 802.11h WLAN
US7228146B2 (en) * 2001-06-26 2007-06-05 Nxp B.V. Estimating Eb/Nt in a CDMA system using power control bits
US7272110B2 (en) * 2001-09-29 2007-09-18 Lg Electronics Inc. Method of allocating walsh code resource
WO2003044970A2 (en) 2001-11-20 2003-05-30 Qualcomm Incorporated Reverse link power controlled repeater
US7082107B1 (en) 2001-11-26 2006-07-25 Intel Corporation Power control in wireless communications based on estimations of packet error rate
US6788941B2 (en) 2001-12-20 2004-09-07 Motorola, Inc. Method and apparatus for mobile-initiated, CDMA-dispatch soft handoff
US6961572B2 (en) 2001-12-20 2005-11-01 Motorola, Inc. Method and apparatus for base-initiated, CDMA-dispatch soft handoff
US6801783B2 (en) 2001-12-20 2004-10-05 Motorola, Inc. Base site and method for quickly establishing a CDMA dispatch call
US7099290B2 (en) * 2001-12-20 2006-08-29 Motorola, Inc. Method and apparatus for CDMA-dispatch soft handoff
US6925309B2 (en) 2001-12-20 2005-08-02 Motorola, Inc. Method and apparatus for quickly establishing a CDMA dispatch call
US6917602B2 (en) * 2002-05-29 2005-07-12 Nokia Corporation System and method for random access channel capture with automatic retransmission request
US7733896B2 (en) * 2002-08-19 2010-06-08 Alcatel-Lucent Usa Inc. Dynamic access priority scheme
US7075905B2 (en) * 2002-09-11 2006-07-11 Qualcomm Incorporated Quality indicator bit (QIB) generation in wireless communications systems
US7020484B2 (en) * 2002-10-29 2006-03-28 Qualcomm Incorporated Controlling multiple modems in a wireless terminal using energy-per-bit determinations
US7016697B2 (en) * 2002-10-29 2006-03-21 Qualcomm Incorporated Controlling multiple modems in a wireless terminal using dynamically varying modem transmit power limits
US7649994B1 (en) * 2002-11-01 2010-01-19 Nortel Networks Limited System and method for decoding CDMA quality channel
US7831263B2 (en) * 2002-11-08 2010-11-09 Qualcomm Incorporated Apparatus and method for determining the location of a repeater
RU2005121147A (ru) 2002-12-05 2006-01-20 Квэлкомм Инкорпорейтед (US) Система и способ для установки усиления обратной линии связи ретрансляторов в системах беспроводной связи
US7299402B2 (en) * 2003-02-14 2007-11-20 Telefonaktiebolaget Lm Ericsson (Publ) Power control for reverse packet data channel in CDMA systems
US8254358B2 (en) * 2003-03-06 2012-08-28 Ericsson Ab Communicating a broadcast message to change data rates of mobile stations
TW200517000A (en) 2003-07-11 2005-05-16 Qualcomm Inc Dynamic shared forward link channel for a wireless communication system
US7995667B2 (en) * 2004-02-13 2011-08-09 Broadcom Corporation Reduced latency concatenated reed solomon-convolutional coding for MIMO wireless LAN
US8023489B2 (en) * 2004-03-17 2011-09-20 Qualcomm, Inc. Burden sharing in satellite communications
JP2007532079A (ja) * 2004-04-05 2007-11-08 クゥアルコム・インコーポレイテッド 検出した近隣を報告する中継器
US9118380B2 (en) * 2004-04-05 2015-08-25 Qualcomm Incorporated Repeater with positioning capabilities
US7129753B2 (en) * 2004-05-26 2006-10-31 Infineon Technologies Ag Chip to chip interface
US7778596B2 (en) 2004-07-29 2010-08-17 Qualcomm Incorporated Airlink sensing watermarking repeater
US8488459B2 (en) * 2005-03-04 2013-07-16 Qualcomm Incorporated Power control and quality of service (QoS) implementation in a communication system
US7848298B2 (en) * 2005-03-08 2010-12-07 Qualcomm Incorporated De-coupling forward and reverse link assignment for multi-carrier wireless communication systems
CN101253700A (zh) * 2005-08-05 2008-08-27 诺基亚公司 用于门控上行链路控制信道的功率控制
US8920343B2 (en) 2006-03-23 2014-12-30 Michael Edward Sabatino Apparatus for acquiring and processing of physiological auditory signals
US20080049716A1 (en) * 2006-06-30 2008-02-28 Intel Corporation Error rate based power management of a high-speed serial link
ATE447797T1 (de) * 2007-11-23 2009-11-15 Alcatel Lucent Adaptive leistungssteuerung für edch
US8811200B2 (en) * 2009-09-22 2014-08-19 Qualcomm Incorporated Physical layer metrics to support adaptive station-dependent channel state information feedback rate in multi-user communication systems
CN101790190B (zh) * 2010-01-08 2014-12-10 中兴通讯股份有限公司 下行控制信息的检测方法和装置
ES2750611T3 (es) * 2016-01-20 2020-03-26 Ericsson Telefon Ab L M Métodos, sistema y equipo de usuario de una red de comunicación inalámbrica para determinar las condiciones de transmisión para un flujo de medios en tiempo real

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309771A (en) * 1979-07-02 1982-01-05 Farinon Corporation Digital radio transmission system
JPS56103555A (en) * 1980-01-22 1981-08-18 Nec Corp Transmission output control system
GB2132452B (en) * 1982-12-08 1986-10-08 Racel Ses Limited Radio systems
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
DE3724729A1 (de) * 1987-07-25 1989-02-02 Ant Nachrichtentech Verfahren zur aufbereitung eines faltungscodes zur uebertragung sowie dessen empfangsseitige rueckwandlung sowie anordnung hierzu
US5157672A (en) * 1989-03-15 1992-10-20 Nec Corporation Interference detection apparatus for use in digital mobile communications system
US5267262A (en) * 1989-11-07 1993-11-30 Qualcomm Incorporated Transmitter power control system
US5265119A (en) * 1989-11-07 1993-11-23 Qualcomm Incorporated Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system
FI86352C (fi) * 1989-11-14 1992-08-10 Nokia Oy Ab Digitaliskt radiolaenksystem och foerfarande foer reglering av en saendingseffekt i ett digitaliskt radiolaenksystem.
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
SE467386B (sv) * 1990-10-05 1992-07-06 Ericsson Telefon Ab L M Foerfarande foer reglering av uteffekt i mobilradiosystem
US5283780A (en) * 1990-10-18 1994-02-01 Stanford Telecommunications, Inc. Digital audio broadcasting system
US5204876A (en) * 1991-03-13 1993-04-20 Motorola, Inc. Method and apparatus for providing high data rate traffic channels in a spread spectrum communication system
US5241565A (en) * 1991-06-25 1993-08-31 Microcom Systems, Inc. Method and apparatus for effecting efficient transmission of data
US5159608A (en) * 1991-08-28 1992-10-27 Falconer David D Method and apparatus for using orthogonal coding in a communication system
EP0548939B1 (en) * 1991-12-26 2000-09-13 Nec Corporation Transmission power control system capable of keeping signal quality constant in mobile communication network
US5216692A (en) * 1992-03-31 1993-06-01 Motorola, Inc. Method and apparatus for adjusting a power control threshold in a communication system
US5263050A (en) * 1992-09-09 1993-11-16 Echelon Corporation Adaptive threshold in a spread spectrum communications system
US5299229A (en) * 1993-01-29 1994-03-29 Unisys Corporation High rate-low rate PN code tracking system
US5341396A (en) * 1993-03-02 1994-08-23 The Boeing Company Multi-rate spread system
US5383219A (en) * 1993-11-22 1995-01-17 Qualcomm Incorporated Fast forward link power control in a code division multiple access system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1983838B (zh) * 1997-06-17 2012-06-20 高通股份有限公司 产生高速信道的方法和系统
CN1722644A (zh) * 1997-12-10 2006-01-18 三菱电机株式会社 通信控制方法
CN1722644B (zh) * 1997-12-10 2015-07-15 黑莓有限公司 通信控制方法
CN101197602B (zh) * 1999-04-14 2012-06-27 诺基亚公司 用于控制传输功率的方法
CN100338887C (zh) * 1999-07-23 2007-09-19 高通股份有限公司 控制选通发送通信系统的方法和设备
CN100456665C (zh) * 2002-08-09 2009-01-28 高通股份有限公司 在无线通信系统中用于改善质量反馈可靠性的系统和方法
CN1879374B (zh) * 2003-09-17 2011-04-06 艾瑟罗斯通讯公司 无线系统的重复编码
CN102158940B (zh) * 2006-08-08 2012-11-14 电信科学技术研究院 高速上行分组接入中重传确认指示信道的功率控制方法及装置
CN101237239B (zh) * 2008-03-03 2011-11-30 黄知涛 一种(n-1)/n码率的删除卷积码的盲识别方法
CN105636179A (zh) * 2014-11-27 2016-06-01 华为终端（东莞）有限公司 一种发射功率的确定方法及装置

Also Published As

Publication number Publication date
FI118665B (fi) 2008-01-31
EP1492262B1 (en) 2006-10-25
PT1492262E (pt) 2007-01-31
FI118664B (fi) 2008-01-31
ATE419684T1 (de) 2009-01-15
TW328192B (en) 1998-03-11
EP1492262A2 (en) 2004-12-29
FI953501A0 (fi) 1995-07-20
ES2211896T3 (es) 2004-07-16
ES2273136T3 (es) 2007-05-01
FI112833B (fi) 2004-01-15
HK1073548A1 (en) 2005-10-07
EP2017971A2 (en) 2009-01-21
HK1128836A1 (en) 2009-11-06
KR960703291A (ko) 1996-06-19
ATE343875T1 (de) 2006-11-15
ES2281590T3 (es) 2007-10-01
DE69434945D1 (de) 2007-05-03
DE69435178D1 (de) 2009-02-12
PT680675E (pt) 2004-05-31
US5383219A (en) 1995-01-17
EP1381171A2 (en) 2004-01-14
FI20070832A (fi) 2007-11-02
DK1381171T3 (da) 2007-05-29
EP1381171A3 (en) 2005-03-23
EP1487130A3 (en) 2005-02-09
US5461639A (en) 1995-10-24
CN1065995C (zh) 2001-05-16
RU2128397C1 (ru) 1999-03-27
ATE259119T1 (de) 2004-02-15
AU1187295A (en) 1995-06-13
ATE500704T1 (de) 2011-03-15
FI120569B (fi) 2009-11-30
JPH08506467A (ja) 1996-07-09
CA2153700A1 (en) 1995-06-01
IL111689A0 (en) 1995-01-24
EP1381171B1 (en) 2007-03-21
IL121886A0 (en) 1998-03-10
FI20030904A (fi) 2003-06-16
EP0680675A1 (en) 1995-11-08
BR9405789A (pt) 1995-12-12
IL111689A (en) 1998-08-16
AU678874B2 (en) 1997-06-12
DE69433529D1 (de) 2004-03-11
SI0680675T1 (en) 2004-08-31
CA2153700C (en) 2003-01-21
IL121886A (en) 2003-10-31
DE69434945T2 (de) 2007-11-29
ES2316908T3 (es) 2009-04-16
EP0680675B1 (en) 2004-02-04
HK1073542A1 (en) 2005-10-07
EP1492262A3 (en) 2005-03-16
DE69433529T2 (de) 2004-12-16
KR100337968B1 (ko) 2002-10-09
WO1995015038A3 (en) 1995-06-15
ES2358956T3 (es) 2011-05-17
DE69434876T2 (de) 2007-09-06
EP1487130B1 (en) 2008-12-31
EP1487130A2 (en) 2004-12-15
DK1492262T3 (da) 2007-01-29
HK1015192A1 (en) 1999-10-08
JP3177626B2 (ja) 2001-06-18
DE69434876D1 (de) 2006-12-07
PT1381171E (pt) 2007-05-31
EP2017971B1 (en) 2011-03-02
ATE357777T1 (de) 2007-04-15
ZA948424B (en) 1995-06-29
EP2017971A3 (en) 2009-11-04
FI953501A (fi) 1995-07-20
FI20061119A (fi) 2006-12-15
DK0680675T3 (da) 2004-04-05
WO1995015038A2 (en) 1995-06-01
DE69435335D1 (de) 2011-04-14

Similar Documents

Publication Publication Date Title
CN1065995C (zh) 提供速率可变的数据通信链路的方法
CN1108035C (zh) 降低峰－均传输功率的高数据速率cdma无线通信系统
CN1124694C (zh) 采用双重最大值度量生成处理的非相干接收机
CN1105438C (zh) 码速率提高的压缩模式ds－cdma系统和方法
CN1178422C (zh) 应用符号累积实现有效再次发射的方法和设备
CN1155168C (zh) 高数据速率cdma无线通信系统
CN1097898C (zh) 具有可变数据速率的扩展频谱通信系统中确定信号强度的方法和装置
CN1123179C (zh) 用于可变速率数字数据传输的方法和装置
RU2150789C1 (ru) Способ и устройство для передачи данных с переменной скоростью в системе связи с использованием неортогональных каналов переполнения
US6480521B1 (en) Method and apparatus for transmitting high speed data in a spread spectrum communications system
EP1084540B1 (en) Device and method for generating and distributing coded symbols in cdma communication system
EP1596519B1 (en) A subscriber unit and method for use in a wireless communication system
CN1152384A (zh) 码分多址系统中的反向链路闭环功率控制
CN1338163A (zh) 在移动通信系统中提供场地选择分集的方法
CN1284243A (zh) 空中接口容量调度方法
KR20020012595A (ko) 레이트 판정을 향상시키기 위해 프레임 에너지 메트릭을사용하는 방법 및 장치
CN102113375B (zh) 在无线通信系统的软切换过程中发送和接收数据的装置和方法
MXPA98006801A (en) Methods and systems of access of cdma of multiple carrier sustract

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Beijing Post-Telecommunication Communicatino Equipment Factory

Assignor: American Qualcomm Corp (QUALCOMM Incorporated)

Contract fulfillment period: 10 years

Contract record no.: 200210003

Denomination of invention: Method for providing a rate changeable data communication link in a CDMA system

Granted publication date: 20010516

License type: General

Record date: 20020116

Assignee: Ningbo Bodao Co., Ltd.

Assignor: American Qualcomm Corp (QUALCOMM Incorporated)

Contract fulfillment period: 10 years

Contract record no.: 200210005

Denomination of invention: Method for providing a rate changeable data communication link in a CDMA system

Granted publication date: 20010516

License type: General

Record date: 20020125

Assignee: Dalian Daxian Group Co., Ltd.

Assignor: American Qualcomm Corp (QUALCOMM Incorporated)

Contract fulfillment period: 10 years

Contract record no.: 200210006

Denomination of invention: Method for providing a rate changeable data communication link in a CDMA system

Granted publication date: 20010516

License type: General

Record date: 20020125

Assignee: Guangzhou Jinpeng Group Co., Ltd.

Assignor: American Qualcomm Corp (QUALCOMM Incorporated)

Contract fulfillment period: 10 years

Contract record no.: 200210007

Denomination of invention: Method for providing a rate changeable data communication link in a CDMA system

Granted publication date: 20010516

License type: General

Record date: 20020125

Assignee: Datang Telecommunication Science & Technology Co., Ltd.

Assignor: American Qualcomm Corp (QUALCOMM Incorporated)

Contract fulfillment period: 10 years

Contract record no.: 200210008

Denomination of invention: Method for providing a rate changeable data communication link in a CDMA system

Granted publication date: 20010516

License type: General

Record date: 20020125

Assignee: Datang Telecommunication Science & Technology Co., Ltd.

Assignor: American Qualcomm Corp (QUALCOMM Incorporated)

Contract fulfillment period: 10 years

Contract record no.: 200210009

Denomination of invention: Method for providing a rate changeable data communication link in a CDMA system

Granted publication date: 20010516

License type: General

Record date: 20020125

LIC Patent licence contract for exploitation submitted for record

Free format text: LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 10 YEARS

Name of requester: BEIJING POSTS AND TELECOMMUNICATIONS EQUIPMENT FA

Effective date: 20020116

Free format text: LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 10 YEARS

Name of requester: DATANG TELECOM TECHNOLOGY CO., LTD.

Effective date: 20020125

Free format text: LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 10 YEARS

Name of requester: GUANGZHOU JINPENG GROUP CO., LTD.

Effective date: 20020125

Free format text: LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 10 YEARS

Name of requester: DALIAN DAXIAN GROUP CO.,LTD.

Effective date: 20020125

Free format text: LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 10 YEARS

Name of requester: NINGBO BIRD CO., LTD.

Effective date: 20020125

C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: California

Patentee after: Qualcomm Inc.

Address before: California

Patentee before: Qualcomm Inc.

C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20141122

Granted publication date: 20010516