CN101079652B - 用于在码分多址通信系统中使用的用户设备、基站及系统 - Google Patents
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Abstract
一种用于在码分多址通信系统中使用的用户设备、基站及系统,利用一种讯息码,该讯息码被产生以扰频或解扰频关联于一特定用户的高速共享控制信道的数据。该特定用户设备的用户识别码包含L位。1/2速率卷积编码器利用1/2速率卷积码处理至少该用户识别码的位,用以产生所述讯息码。
Description
相关申请
本申请是申请日为2003年5月5日、申请号为03810259.5、题为“产生用于高速共享控制信道的用户识别专有扰频码的装置”的发明专利申请的分案申请。
技术领域
本发明是有关于无线通信系统。特别是,本发明是关于用于高速共享控制信道(HS-SCCH)的用户设备识别码(UE ID)特定扰频序列。
背景技术
对于宽带码分多址(W-CDMA)通信系统提出了高速下行分组存取(HSDPA)。这种高速下行分组存取(HSDPA)提供高下行数据速率,以支持多媒体服务。
为支持这种高速下行分组存取(HSDPA),高速共享控制信道(HS-SCCH)被加以使用。这些高速共享控制信道(HS-SCCH)是用以发送必要控制信息至用户设备(UE)。各个高速共享控制信道(HS-SCCH)具有两个部分,其分别称为第一部分(PART I)及第二部分(PART II)。第一部分(PART I)是承载用户设备(UE)需要的时间关键信息。该信息包括高速物理下行共享控制信道(HS-PDSCH)使用的信道化码集及调制类型,所述HS-PDSCH承载高速下行分组存取(HSDPA)有效负载。该信息是支持高速下行分组存取(HSDPA)所必要,因为高速下行分组存取(HSDPA)是使用自适应调制及编码(AMC)。
为取得第一部分(PART I)信息,各个高速下行分组存取(HSDPA)用户设备(UE)是监控至多四个高速共享控制信道(HS-SCCH)以取得其信息。特定用户设备(UE)的信息是利用其用户设备识别码(UE ID)特定扰频序列而与其它用户设备(UE)进行区别。该用户设备(UE)是利用其用户设备识别码(UE ID)特定扰频序列,处理各个监控的高速共享控制信道(HS-SCCH),藉以侦测预计用于该用户设备(UE)的高速共享控制信道(HS-SCCH)。处理后,该用户设备(UE)决定:在哪一个高速共享控制信道(HS-SCCH)上,信息(如果有)是利用其扰频序列承载。UE对在其HS-SCCH的PART I上承载的信息解扰频。
直至最近,10位的用户设备识别码(UE ID)被用以做为该用户设备(UEID)特定扰频序列的基础。在这个例子中,该用户设备识别码(UE ID)被转换为40位扰频序列。为了将该10位用户设备识别码(UE ID)转换为该40位用户设备识别码(UE ID)特定扰频序列,该10位用户设备识别码(UEID)是利用Reed-Muller模块处理,用以产生32位讯息码。该产生的讯息码的前8位被重复附加至该32位讯息码的后面以产生40位讯息码。
虽然该用户设备识别码(UE ID)长度最好能够延伸至16个码片,然而,高速共享控制信道(HS-SCCH)依目前方法是使用10位用户设备识别码(UEID)。该用户设备识别码(UE ID)被转换为40位扰频序列。为了将该10位用户设备识别码(UE ID)转换为该40位扰频序列,该10位用户设备识别码(UE ID)是利用Reed-Muller模块处理以产生32位讯息码。该产生讯息码的前8位被重复附加于该32位讯息码的后面以产生40位讯息码。
为降低错误侦测的发生,对各个用户设备识别码(UE ID)产生的扰频码间最好能够具有完善的区分。因此,扰频码最好能够利用交替方式产生。
发明内容
一种讯息码,其产生以扰频或解扰频关联于一特定用户的高速共享控制信道(HS-SCCH)的数据。该特定用户设备的用户识别码包括L位。1/2速率卷积编码器利用1/2速率卷积编码处理至少该用户识别码的位,以产生所述讯息码。
根据本发明的第一方面,提供一种用于在码分多址通信系统中使用的用户设备,该用户设备包括:被配置成处理用户设备识别码的电路,该电路通过对用户设备识别码进行1/2速率卷积编码以产生被用户设备用于解扰频高速共享控制信道的讯息码;其中该用户设备被配置成接收无线信号,该无线信号对用户设备提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负荷数据。
根据本发明的第二方面,提供另一种用于在码分多址通信系统中使用的用户设备,该用户设备被配置成监视高速共享控制信道,所述高速共享控制信道在与该通信系统关联的基站处被一扰频码扰频,并且该扰频码为通过对与该用户设备关联的用户设备识别码进行1/2速率卷积编码而产生,并且该用户设备包括用于对由扰频码扰频的高速共享控制信道进行解扰频的电路,其中该用户设备还被配置成接收来自基站的无线信号,该无线信号对用户设备提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负载数据。
根据本发明的第三方面,提供一种用于在码分多址通信系统中使用的基站,该基站包括:被配置成处理包含用户设备识别码的信息的电路,该电路通过对该信息进行1/2速率卷积编码以产生编码后信息,该电路还被配成基于编码后信息产生扰频码,该扰频码被所述基站用于扰频高速共享控制信道的至少一部分,其中该基站被配置成发射无线信号,该无线信号对用户设备提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负载数据。
根据本发明的第四方面,提供一种码分多址系统,包括基站和用户设备,其中基站包括被配置成处理包含用户设备识别码的第一信息的电路,该电路通过对该第一信息进行1/2速率卷积编码以产生第一编码后信息,该基站根据基于第一编码后信息所产生的第一扰频码来扰频高速共享控制信道,其中该基站被配置成发射无线信号,该无线信号提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负载数据;用户设备被配置成接收由所述基站发射的无线信号,该用户设备包括被配置成处理包含用户设备识别码的第二信息的电路,该电路通过对该地而信息进行1/2速率卷积编码以产生第二编码后信息,该用户设备根据基于第二编码后信息的第二扰频码来对扰频的高速共享控制信道进行解扰频。
附图说明
图1A是用于产生与高速共享控制信道(HS-SCCH)的特定用户关联的讯息码的电路的优选图;
图1B是配合图1A使用的速率匹配模块的图;
图2A是用于产生与16位用户识别码关联的讯息码的电路的优选图;
图2B是配合图2A使用的速率匹配模块的图;
图3是利用UE ID特定扰频码的简化用户设备;
图4是利用UE ID特定扰频码的简化基站。
具体实施方式
虽然该优选实施例是配合本发明的优选应用详细说明,以用于第三代合伙人计划(3GPP)宽带码分多址(W-CDMA)通信系统的高速下行分组存取(HSDPA),本发明亦可以应用于其它类型的码分多址(CDMA)通信系统。图1A及图1B是表示用户设备识别码(UE ID)特定扰频序列的电路。长度L的用户设备识别码(UE ID)XUE被输入至该电路。长度L可以是任何长度,诸如:8位、10位、16位等等。该用户设备识别码(UE ID)XUE={XUE1,…,XUEL}被输入至1/2速率卷积编码器10,如图1A所示。随着该用户设备识别码(UE ID),额外位(诸如“0”)亦可以附加至该输入字符串的末端,用以延伸该输入字符串的长度以及相应地延伸该输出字符串的长度。使用1/2速率卷积编码器10可以在不同用户设备识别码(UE ID)产生的输出字符串之间,提供高标准的讯息码区分。另外,目前的第三代合伙人计划(3GPP)宽带码分多址(W-CDMA)通信系统是利用1/2速率卷积编码器10以完成前向误差校正(FEC)技术。因此,产生该卷积编码后的用户设备识别码(UEID)特定扰频序列并不需要利用额外硬件。编码后,基于该输出字符串的长度,速率匹配阶段12便可以被加入以刺穿位,用以取得想要的字符串长度。
图2A及图2B是表示用于长度16(L=16)的优选用户设备识别码(UEID)讯息码的优选用户设备识别码(UE ID)特定扰频序列的电路。该16位用户设备识别码(UE ID)XUE={XUE1,…,XUE16},被输入至1/2速率卷积编码器14,并具有8个“0”位附加至该输入字符串的末端。因此,该输入字符串是XUE1,…,XUE16,0,0,0,0,0,0,0,0。该1/2速率卷积编码器14处理后,该输出讯息码是48位长度,即CUE={CUE1,…,CUE48}。
为了将该讯息码的长度降低至40位的优选长度,最好能够刺穿8个位。图2B是表示执行刺穿的速率匹配阶段16。速率匹配阶段16后,该扰频码的有效长度是40位。
图4是表示一简化用户设备,其利用用户设备识别码(UE ID)特定扰频码,对一高速共享控制信道(HS-SCCH)进行解扰频。该用户设备识别码(UE ID)扰频码是通过例如异或门18而与该接收高速共享控制信道(HS-SCCH)混合,用以恢复该编码的高速共享控制信道(HS-SCCH)数据。
图3是表示一简化基站,其利用用户设备识别码(UE ID)特定扰频码扰频编码的数据,用以在该高速共享控制信道(HS-SCCH)上进行传输。该编码的数据是通过例如异或门20而与特定用户的用户设备识别码(UE ID)扰频码混合。该扰频后的数据是用以产生该高速共享控制信道(HS-SCCH),以传输至该特定用户。
Claims (30)
1.一种用于在码分多址通信系统中使用的用户设备,该用户设备包括:
被配置成处理用户设备识别码的电路,该电路通过对用户设备识别码进行1/2速率卷积编码以产生被用户设备用于解扰频高速共享控制信道的讯息码;其中该用户设备被配置成接收无线信号,该无线信号对用户设备提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负荷数据。
2.根据权利要求1所述的用户设备,其中所述高速共享控制信道包括第一部分和第二部分,并且其中所述讯息码被用户设备用于对高速共享控制信道的第一部分解扰频。
3.根据权利要求2所述的用户设备,其中所述用户设备识别码具有16位的长度。
4.根据权利要求3所述的用户设备,其中所述电路被配置成处理用户设备识别码和附加到该用户设备识别码的8个零位,以产生被用户设备用于解扰频高速共享控制信道的第一部分的讯息码。
5.根据权利要求4所述的用户设备,其中所述电路被配置成处理用户设备识别码和附加到该用户设备识别码的8个零位,以产生48位讯息码,并且其中该用户设备还包括:
被配置成刺穿48位讯息码中8个位的电路,用以产生被用户设备用于解扰频高速共享控制信道的第一部分的讯息码。
6.根据权利要求2所述的用户设备,其中所述高速共享控制信道的第一部分包含与该高速物理下行链路共享信道关联的信道化码集及调制类型。
7.根据权利要求1所述的用户设备,其中所述用户设备支持多媒体服务。
8.一种用于在码分多址通信系统中使用的用户设备,该用户设备被配置成监视高速共享控制信道,所述高速共享控制信道在与该通信系统关联的基站处被一扰频码扰频,并且该扰频码为通过对与该用户设备关联的用户设备识别码进行1/2速率卷积编码而产生,并且该用户设备包括用于对由扰频码扰频的高速共享控制信道进行解扰频的电路,其中
该用户设备还被配置成接收来自基站的无线信号,该无线信号对用户设备提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负载数据。
9.根据权利要求8所述的用户设备,其中所述用户设备被配置成监视至多4个高速共享控制信道。
10.根据权利要求8所述的用户设备,其中高速共享控制信道包括第一部分和第二部分,并且高速共享控制信道的第一部分被所述扰频码所扰频。
11.根据权利要求10所述的用户设备,其中高速共享控制信道的第一部分包含与高速物理下行链路共享信道关联的信道化码集及调制类型。
12.根据权利要求8所述的用户设备,其中所述用户设备识别码具有16位的长度。
13.根据权利要求10所述的用户设备,其中所述电路被配置成对由所述扰频码扰频的高速共享控制信道进行解扰频,该电路包括:
1/2速率卷积编码器,被配置成处理用户设备识别码和附加到该用户设备识别码的8个零位,以产生48位讯息码;
被配置成刺穿48位讯息码中8个位的电路;以及
被配置成将高速共享控制信道的第一部分与所刺穿的48位讯息码混合的电路。
14.根据权利要求13所述的用户设备,其中被配置成将高速共享控制信道的第一部分与所刺穿的48位讯息码混合的电路包括异或门。
15.根据权利要求8所述的用户设备,其中所述用户设备支持多媒体服务。
16.一种用于在码分多址通信系统中使用的基站,该基站包括:
被配置成处理包含用户设备识别码的信息的电路,该电路通过对该信息进行1/2速率卷积编码以产生编码后信息,该电路还被配成基于编码后信息产生扰频码,该扰频码被所述基站用于扰频高速共享控制信道的至少一部分,
其中该基站被配置成发射无线信号,该无线信号对用户设备提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负载数据。
17.根据权利要求16所述的基站,其中所述高速共享控制信道的部分为该高速共享控制信道的第一部分,该高速共享控制信道还包括第二部分,而该基站扰频该高速共享控制信道的第一部分。
18.根据权利要求17所述的基站,其中所述用户设备识别码具有16位的长度。
19.根据权利要求18所述的基站,其中所述信息还包含附加到所述用户设备识别码的8个零位。
20.根据权利要求16所述的基站,其中编码后信息为48位长度,其中所述电路还被配置成刺穿编码后信息中的8个位,以产生扰频码,该扰频码被基站用于扰频高速共享控制信道的第一部分。
21.根据权利要求17所述的基站,其中所述高速共享控制信道的第一部分包含与高速物理下行链路共享信道关联的信道化码集及调制类型。
22.根据权利要求16所述的基站,其中所述基站支持多媒体服务。
23.一种用于在码分多址通信系统中使用的基站,该基站被配置成发送由高速共享控制信道承载的控制数据,所述高速共享控制信道的至少一部分根据一扰频码被所述基站扰频,该扰频码从编码后信息中得到,所述编码后信息是通过对包含用户设备识别码的信息进行1/2速率卷积编码而产生的,所述用户设备识别码对应于与所述通信系统关联的用户设备,其中
该基站还被配置成发送无线信号到用户设备,该无线信号对用户设备提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负载数据。
24.根据权利要求23所述的基站,其中所述高速共享控制信道的所述部分为第一部分,所述高速共享控制信道包括第二部分,从而该基站扰频所述高速共享控制信道的所述第一部分。
25.根据权利要求24所述的基站,其中所述高速共享控制信道的所述第一部分包括与所述高速物理下行链路共享信道关联的信道化码集及调制类型。
26.根据权利要求23所述的基站,其中所述用户设备识别码具有16位的长度。
27.根据权利要求24所述的基站,其中所述信息还包含附加到所述用户设备识别码的8个零位,并且所述编码后信息为48位长度,所述基站还包括:
被配置成刺穿编码后信息中的8个位以产生所述扰频码的电路;以及
被配置成将所述高速共享控制信道的所述第一部分与所述扰频码混合的电路。
28.根据权利要求27所述的基站,其中被配置成将所述高速共享控制信道的所述第一部分与所述扰频码混合的电路包括异或门。
29.根据权利要求23所述的基站,其中所述基站支持多媒体服务。
30.一种码分多址系统,该码分多址系统包括:
基站,包括被配置成处理包含用户设备识别码的第一信息的电路,该电路通过对该第一信息进行1/2速率卷积编码以产生第一编码后信息,该基站根据基于第一编码后信息所产生的第一扰频码来扰频高速共享控制信道,其中该基站被配置成发射无线信号,该无线信号提供在与高速共享控制信道关联的高速物理下行链路共享信道上承载的有效负载数据;以及
用户设备,被配置成接收由所述基站发射的无线信号,该用户设备包括被配置成处理包含用户设备识别码的第二信息的电路,该电路通过对该第二信息进行1/2速率卷积编码以产生第二编码后信息,该用户设备根据基于第二编码后信息的第二扰频码来对扰频的高速共享控制信道进行解扰频。
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