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CN100411476C - 一种宽带码分多址系统中上行增强链路信令编码方法 - Google Patents

一种宽带码分多址系统中上行增强链路信令编码方法 Download PDF

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CN100411476C
CN100411476C CNB2004100780349A CN200410078034A CN100411476C CN 100411476 C CN100411476 C CN 100411476C CN B2004100780349 A CNB2004100780349 A CN B2004100780349A CN 200410078034 A CN200410078034 A CN 200410078034A CN 100411476 C CN100411476 C CN 100411476C
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CN1753552A (zh
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许亮
朱学庆
黄心晔
曹爱军
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Huawei Technologies Co Ltd
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Priority to DE200560015712 priority patent/DE602005015712D1/de
Priority to JP2007531571A priority patent/JP4751888B2/ja
Priority to EP20050791926 priority patent/EP1760908B1/en
Priority to AT05791926T priority patent/ATE438232T1/de
Priority to PCT/CN2005/001486 priority patent/WO2006032192A1/zh
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    • 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
    • H04L1/0057—Block 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
    • H04L1/004—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
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Error Detection And Correction (AREA)
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  • Optical Communication System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
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Abstract

本发明公开了一种宽带码分多址系统中上行增强链路信令编码方法，应用于高速上行分组接入，其特征在于，将上行增强链路承载的信息比特数少于一定阈值的信令作为块数据，并采用块编码方式对块数据编码；所述阈值最多为10至12比特。本发明解决了信令编码时的信令开销大的问题，从而降低了终端的发射功率。

Description

一种宽带码分多址系统中上行增强链路信令编码方法
技术领域
本发明涉及码分多址移动通信中的高速分组接入技术领域，具体地说，涉及宽带码分多址系统中上行增强链路信令编码方法。
背景技术
宽带码分多址(WCDMA)作为世界3种主流的3G标准之一，其自身体系处于不断完善之中。在Release5版本中，WCDMA引入了高速下行分组接入技术(HSDPA)，并成为Release5版本的一个最重要的特征。HSDPA技术使WCDMA下行的吞吐能力达到了之前版本的2-3倍，能有效地承载各种分组业务，满足随时随地获取除语音之外的数据、视频和图像等多媒体业务信息。
与之相对应的，高速上行分组接入技术(HSUPA)正处于热烈的标准讨论之中，并将被引入到WCDMA的Release6版本中。HSUPA技术的核心目标是通过使用若干上行增强的技术，使WCDMA上行信道的吞吐量在之前版本的基础上提高50％-70％，来提高上行分组数据的吞吐量。HSUPA技术作为当前一个最新的技术热点，WCDMA系统协议R6版本关于HSUPA的标准正在制定之中。
目前，HSUPA技术上行增强信令采用何种编码方式还没有确定，现有的主流技术方案是在上行增强控制信道上采用卷积(CC)编码。在WCDMA中，现有的卷积编码定义了1/2和1/3两种编码率，约束长度为9，在编码前的编码块中，必须添加8bit全0的尾比特，以辅助完成CC编码过程。尽管卷积编码是一种成熟的编码技术，但对于增强专用物理数据信道上承载的信令，由于信令有效比特数较少，例如，NodeB调度信息有效比特数最多10比特，混合自动重传请求(HARQ)信息有效比特数最多12比特，如果采用卷积编码，在结构上必须添加8比特的尾比特，这将带来相当大的信令开销。如表1所示，NodeB调度信息和HARQ信息的尾比特信令开销分别为44％和40％。
  信令内容 信息比特数 尾比特数   信令开销
  NodeB调度信息 10 8   44％
  HARQ信息 12 8   40％
表1  尾比特信令开销表
发明内容
有鉴于此，本发明的目的在于提供一种宽带码分多址系统中上行增强链路信令编码方法，以减少信令编码的开销。
本发明的技术方案是这样实现的：
一种宽带码分多址系统中上行增强链路信令编码方法，应用于高速上行分组接入，将上行增强链路承载的信息比特数少于一定阈值的信令作为块数据，并采用块编码方式对块数据编码；所述信令的信息比特数最多为10至12比特。
其中，所述块编码方式采用二阶Reed-Muller编码器进行编码。
本发明通过对上行增强链路承载的信息比特在CC编码方式下的信令开销分析，在多种编码方式中，选择了在HSUPA技术中上行增强信令采用块编码方式，将待传输的信息比特作为一数据块进行编码，摒弃了传统各种编码的复杂性以及CC编码方式中8比特的尾比特，有效而简单地降低了信令开销，节省了终端的发射功率。
附图说明
图1为信令信息比特信道编码。
具体实施方式
为使本发明的目的、技术方案、以及优点更加清楚明白，以下参照附图并举实施例，对本发明进一步详细说明。
尽管目前各种编码技术都比较成熟，其中CC编码作为一种实现简单、编码性能优越的编码技术，被业界广为采用。但由于在WCDMA目前采用的CC编码过程中，编码前的编码块必须添加8比特全0的尾比特以辅助完成CC编码过程，这在待编码的信息比特比较多时影响不太，但在待编码的信息比特比较少时，尤其对于信令的编码，CC编码方法对功率的浪费是非常明显的。本发明针对上行增强链路承载的信令信息比特数比较少的特点，采用BLOCK编码(块编码)方式编码，以下以信令信息比特为10比特为例说明。
如图1所示，采用输入10比特、编码输出32比特的二阶Reed-Muller编码器实现块编码。该编码器具有10个基本序列的组合，10个基本序列如表2所示。待编码的信息比特作为一块数据，按先后次序依次为a0，a1，a2，a3，a4，a5，a6，a7，a8，a9输入编码器，对应于信息比特索引输出码字为：
b i = Σ n = 0 9 ( a n × M i , n ) mod 2
其中i＝0，...，31，Mi，n为表2中的基本序列，bk，  k＝0，1，2，...，31表示输出比特。从中选择bk，k＝0，1，2，...，29作为信息比特编码的码字。
上述块编码还可采用其它编码器，只要能够实现块编码即可。本发明所述进行块编码的适用于，拟以在CC编码时开销大于某一门限时采用，例如，如果采用CC编码方法，开销达到30％以上，就采用本发明所述块编码方法进行编码。以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
表2  (32，10)信息比特编码的基本序列
  1   M<sub>1，0</sub>  M<sub>1，1</sub>   M<sub>1，2</sub>   M<sub>1，3</sub>   M<sub>1，4</sub>   M<sub>1，5</sub>   M<sub>1，6</sub>   M<sub>1 7</sub>  M<sub>1，8</sub>   M<sub>1，9</sub>
  0   1  0   0   0   0   1   0   0  0   0
  1   0  1   0   0   0   1   1   0  0   0
  2   1  1   0   0   0   1   0   0  0   1
  3   0  0   1   0   0   1   1   0  1   1
  4   1  0   1   0   0   1   0   0  0   1
  5   0  1   1   0   0   1   0   0  1   0
  6   1  1   1   0   0   1   0   1  0   0
  7   0  0   0   1   0   1   0   1  1   0
  8   1  0   0   1   0   1   1   1  1   0
  9   0  1   0   1   0   1   1   0  1   1
  10   1  1   0   1   0   1   0   0  1   1
  11   0  0   1   1   0   1   0   1  1   0
  12   1  0   1   1   0   1   0   1  0   1
  13   0  1   1   1   0   1   1   0  0   1
  14   1  1   1   1   0   1   1   1  1   1
  15   1  0   0   0   1   1   1   1  0   0
  16   0  1   0   0   1   1   1   1  0   1
  17   1  1   0   0   1   1   1   0  1   0
  18   0  0   1   0   1   1   0   1  1   1
  19   1  0   1   0   1   1   0   1  0   1
  20   0  1   1   0   1   1   0   0  1   1
  21   1  1   1   0   1   1   0   1  1   1
  22   0  0   0   1   1   1   0   1  0   0
  23   1  0   0   1   1   1   1   1  0   1
  24   0  1   0   1   1   1   1   0  1   0
  25   1  1   0   1   1   1   1   0  0   1
  26   0  0   1   1   1   1   0   0  1   0
  27   1  0   1   1   1   1   1   1  0   0
  28   0  1   1   1   1   1   1   1  1   0
  29   1  1   1   1   1   1   1   1  1   1
  30   0  0   0   0   0   1   0   0  0   0
  31   0  0   0   0   1   1   1   0  0   0

Claims (2)

1. 一种宽带码分多址系统中上行增强链路信令编码方法，应用于高速上行分组接入，其特征在于，将上行增强链路承载的信息比特数少于一定阈值的信令作为块数据，并采用块编码方式对块数据编码；所述阈值最多为10至12比特。
2. 根据权利要求1所述的方法，其特征在于，所述块编码方式采用二阶Reed-Muller编码器进行编码。
CNB2004100780349A 2004-09-20 2004-09-20 一种宽带码分多址系统中上行增强链路信令编码方法 Expired - Lifetime CN100411476C (zh)

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CNB2004100780349A CN100411476C (zh) 2004-09-20 2004-09-20 一种宽带码分多址系统中上行增强链路信令编码方法
AT05791926T ATE438232T1 (de) 2004-09-20 2005-09-19 Verfahren zur signalisierungskodierung der verbesserten aufwärtsrichtung in einem wcdma- system
JP2007531571A JP4751888B2 (ja) 2004-09-20 2005-09-19 Ｅ−ｄｃｈ専用物理制御チャネルの符号化方法及び符号化装置
EP20050791926 EP1760908B1 (en) 2004-09-20 2005-09-19 Method for encoding enhanced uplink signalling in a wcdma system
DE200560015712 DE602005015712D1 (de) 2004-09-20 2005-09-19 Verfahren zur signalisierungskodierung der verbesserten aufwärtsrichtung in einem wcdma-system
PCT/CN2005/001486 WO2006032192A1 (fr) 2004-09-20 2005-09-19 Procede pour coder une signalisation de liaison montante amelioree dans un systeme wcdma
US11/645,894 US20070177566A1 (en) 2004-09-20 2006-12-27 Method and apparatus for coding of E-DCH dedicated physical control channel

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EP1760908A1 (en) 2007-03-07
EP1760908B1 (en) 2009-07-29
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