CN1879424B - 提供用以支持上链及下链信道的信道分派信息的方法及系统 - Google Patents

提供用以支持上链及下链信道的信道分派信息的方法及系统 Download PDF

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CN1879424B
CN1879424B CN2004800288780A CN200480028878A CN1879424B CN 1879424 B CN1879424 B CN 1879424B CN 2004800288780 A CN2004800288780 A CN 2004800288780A CN 200480028878 A CN200480028878 A CN 200480028878A CN 1879424 B CN1879424 B CN 1879424B
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wireless transmission
receive unit
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CN1879424A (zh
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马里恩·鲁道夫
史蒂芬G·迪克
菲利普J·佩特拉斯基
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InterDigital Technology Corp
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045Arrangements at the receiver end
    • H04L1/0046Code rate detection or code type detection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0061Error detection codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072Error control for data other than payload data, e.g. control data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446Resources in time domain, e.g. slots or frames
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

本发明揭示一种提供用于支持一上链(UL)信道与一下链(DL)信道的信道分派信息之方法以及无线通信系统。此种系统包含至少一B节点以及至少一无线传输/接收单元(WTRU)。无线传输/接收单元(WTRU)是通过一共享控制信道、一上链(UL)信道以及下链(DL)信道而与B节点进行通信。无线传输/接收单元(WTRU)通过共享控制信道而自B节点接收一消息。该消息包含该消息是否准备分派无线资源至该UL信道或是该DL信道的一指示,而该WTRU判定该消息是否为针对该WTRU而作准备,若是,则该WTRU判定该消息是否为用以分派无线资源至该UL信道或是该DL信道。该WTRU基于该消息是否为用以分派无线资源至该UL信道或是该DL信道而采取一适当的动作。

Description

提供用以支持上链及下链信道的信道分派信息的方法及系统
(1)技术领域
本发明是有关于一种无线通信系统,更进一步地说,本发明是有关于一种用以提供信道分派信息以支持上链及下链传输的系统及其方法。
(2)背景技术
高速下链封包存取(High Speed Downlink Package Access,HSDPA)已被开发来增加下链(DL)效率以及于通用移动通信系统(Universal MobileTel ecommunication System,UMTS)第五发行(R5)版本的宽带码分多址系统(W-CDMA)的总处理率。相较于通用移动通信系统(UMTS)的R99/R4版本,高速下链封包存取(HSDPA)的主要好处为快速以及在下链与一快速层1混合自动重复请求(H-ARQ)中之动态链接调适。快速链接调适是藉由快速排程下链传输于一基站中,再与快速层1下链发信号信道联系而达成。该发信号信道,即一高速共享控制信道(HS-SCCH),传输无线资源配置信息至多个无线传输/接收单元(WTRUs)
于一个频分双工(FDD)中,一高速共享控制信道(HS-SCCH)在三(3)时隙传输时间间隔(TTI)期间,以一扩频系数(SF)等于128之信道化码而发送出。该高速共享控制信道(HS-SCCH)系指示,于一特定时间偏移后,在一高速下链共享信道(HS-DSCH)中,数据将会被传输至一无线传输/接收单元(WTRU)。该高速共享控制信道(HS-SCCH)携带下列信息:1)信道化编码组(channelization-code-set)信息(七个位);2)调整方案信息(一个位);3)传输区块(transport-block)之大小信息(六个位);4)混合自动重复请求(H-ARQ)信息(三个位);5)冗余以及星象型(constellation)版本信息(三个位);6)新数据指针信息(一个位);7)一无线传输/接收单元(WTRU)特性(十六个位)。
高速共享控制信道(HS-SCCH)于三(3)时隙上发送(两毫秒传输时间间隔2ms TTI)),但是其由两个场域所构成,第一场域(第一时隙)包含信道化码映像以及调整格式信息;而第二场域(第二以及第三时隙)包含传输区块大小、混合自动重复请求(H-ARQ)信息、冗余版本以及与一无线传输/接收单元特定循环冗余检查(CRC)一起的新数据指针。
换句话说,一加强上链(EU)可增加上链(UL)效率与总处理率。混合自动重复请求(H-ARQ)与B节点排程是该加强上链(EU)之一部份。相似于一高速下链封包存取(HSDPA),用以加强上链(EU)操作之新的共享下链(DL)控制信道提供上链(UL)无线资源之快速以及动态调适,用以上链(UL)传输。用于加强上链(EU)之共享下链(DL)控制信道,需要去保证低配置的潜在因素以及无线资源管理的高效率,用以上链(UL)传输。以下,为了达到加强上链目的之共享下链(DL)控制信道简单地被称为一上链(UL)资源分派信道。
为了执行加强上链(EU)与高速下链封包存取(HSDPA),另一个用于加强上链(EU)之上链(UL)资源分派信道可被引进于一高速下链封包存取(HSDPA)之一存在高速共享控制信道(HS-SCCH)上。所以,引进一组分开之扩频系数(SF)等于128之下链(DL)信道以做为上链(UL)资源分派信道是可行的。藉由这个方法,为了高速下链封包存取(HSDPA)之操作,无线传输/接收单元(WTRU)除了高速共享控制信道(HS-SCCH)外,将需要去监控一个或更多之上链(UL)资源分派信道。虽然这个方法为简单之概念,有许多缺点包括在这个方案中,例如无线传输/接收单元(WTRU)的复杂性、无线传输/接收单元的电池效率,以及下链(DL)扩频之利用性。
所以,为了同时支持一个加强上链(EU)以及一高速下链封包存取(HSDPA)之操作,需要有一个有效率之加强上链(EU)信道分派方案。
(3)发明内容
在一个实施例中,本发明是一种提供信道分派信息的无线通信系统,其中信道分派信息是用于支持一上链(UL)信道以及一下链(DL)信道。此种系统包含至少一B节点与至少一无线传输/接收单元(WTRU),无线传输/接收单元(WTRU)是通过一共享控制信道、上链(UL)信道以及下链(DL)信道来与B节点进行通信。无线传输/接收单元(WTRU)通过共享控制信道自B节点接收一消息。此消息包含一指示,而该指示是用以指示消息是否为针对该无线传输/接收单元(WTRU),如果是,该无线传输/接收单元(WTRU)判定该消息是否为用以分派无线资源至上链(UL)信道或是下链(DL)信道。藉以该无线传输/接收单元(WTRU)可基于有关于无线资源分派的判定来采取适当的动作。
在另外的实施例中,本发明有关一种方法以及一种分时隙无线通信系统。此种系统包含至少一B节点、控制该B节点的无线网络控制器(RNC)以及通过一共享控制信道、上链(UL)信道以及下链(DL)信道而与B节点进行通信的至少一无线传输/接收单元(WTRU)。无线网络控制器(RNC)传输一消息至该无线传输/接收单元(WTRU)指示哪一时隙传输时间间隔(TTI)支持UL信道传输以及哪一时隙传输时间间隔(TTI)支持DL信道传输
(4)附图说明
图1是根据本发明操作之一无线通信系统的方块图;
图2为在一HSDPA中的信道化码集合图的一查询表,其与图1的系统结合使用;以及
图3为一程序流程图,该程序包含根据本发明用以执行上链信道分派发信号的方法步骤。
(5)具体实施方式
本发明将参照图式说明,其中相同的号码代表代表相同的组件。
此后,专用术语“WTRU”包含但并未限制于一使用者设备(UE)、移动站、固定或移动用户单元、呼叫器或可于一无线环境中操作的任何形式的装置。当此后提到专用术语“B节点”,其包含但并未限制于一基地台、网点控制器、存取点或于一无线环境下任何形式的接口装置。
本发明可更进一步应用于任何形式的无线通信系统,例如UMTS时分双工(TDD)及频分双工(FDD)、时分同步码分多址(TD-SCDMA)、码分多址2000(CDMA2000)以及一般的CDMA,或是任何形式的无线通信系统。
本发明的特征可整合至一IC或是配置于一包含许多互连组件的电路中。
本发明将参照一高速下链封包存取(HSDPA)和一加强上链(EU)描述,且该专用术语“HSDPA”和“EU”可分别与DL及UL互相交换使用,然而必须了解的是,参照一HSDPA和EU仅是为了描述本发明的较佳实施例,而本发明所揭露的可用于任何利用一共享控制信道的系统,其是用以同时传输UL和DL传输之信道分派信息。
图1为一根据本发明的系统100的方块图,其用以支持UL和DL操作。该系统100包含一RNC 102、一B节点104以及一WTRU 106。该B节点104由该RNC 102所控制,且动态的配置来自该WTRU 106以及传输至该WTRU 106之UL和DL传输的无线资源。于B节点104以及WTRU 106之间建立三个信道,该等信道系为一DL信道108、一UL信道110及一共享控制信道112,共享控制信道112是用于UL和DL传输的信道分派信息的传输。
该B节点104是配置以支持一HSDPA和EU操作。因此,每一B节点104动态地分别在一HS-DSCH和一EU信道中,配置来自该WTRU 106以及传输至该WTRU 106之UL和DL传输的无线资源。该HS-DSCH和该EU的无线资源分派信息是通过该共享控制信道112传输。
根据本发明,该共享控制信道112是用于UL和DL传输的无线资源分派信息,且提供一特定指示用以区别该无线资源分派是否是用于UL或是DL传输。因此,该共享控制信道112占用一共享DL无线资源空间,其是以一组SF=128的信道化码(channelization code)定义,其同时用于DL和UL传输,且该WTRU106配置以识别一特定传输是否是为了分派该DL或UL传输的无线资源。
根据本发明的第一实施例,一特定无线资源被分派给一UL传输之一指示,藉由一或多个在一现行高速下链封包存取(HSDPA)中的信道化码集合图的不可能组合所提供。图2为现行用于该高速下链封包存取(HSDPA)的信道化码集合图的查询表。一高速共享控制信道(HS-SCCH)使用七(7)位通知该WTRU 106哪一个SF=16的信道化码用于对应的HS-DSCH,在该128可能组合的范围外,八种(8)组合现在并未于一高速下链封包存取(HSDPA)使用(详见图2中标示的「冗余区域」),八种未使用组合之一或更多是用以分派无线资源或是指示该解调传输系用于UL传输,而非DL传输。因此,如果该WTRU 106判定了一信道化码集合对应图2中该不可能组合之一,则该WTRU 106识别该传输用以UL传输的无线资源分派,而非DL传输,或是该码对应至该信道化码集合分派给UL传输。
根据本发明的第二实施例,一特定无线资源被分派给一UL传输之一指示,由一WTRU-特定循环冗余检查所提供。在现行高速下链封包存取(HSDPA)规格下,一WTRU-特定循环冗余检查被包含于一高速共享控制信道(HS-SCCH)区域2中。一个16位的循环冗余检查(CRC)自欲被传输的信息计算,而该计算的循环冗余检查(CRC)以一独特的16位WTRU标识符(ID)所掩蔽,该掩蔽的循环冗余检查(CRC)被传输至一WTRU 106作为一WTRU-特定循环冗余检查。
根据本发明的第二实施例,此WTRU-特定循环冗余检查可经由一独特且决定的方式修正,以指示该解调传输为了UL传输,而非DL传输。举例来说,在执行一信道编码前,针对高速下链封包存取(HSDPA)所计算的WTRU-特定循环冗余检查为了一EU而反向,一WTRU 106执行二(2)个不同的比较,较佳地是同时进行,其是以执行该接收传输的循环冗余检查(CRC)的方式。如果该WTRU 106成功的以一WTRU-特定循环冗余检查译码该接收传输,则该WTRU 106识别该传输为了一高速下链封包存取(HSDPA),如果该WTRU 106成功以一反向WTRU-特定循环冗余检查译码该接收传输,则该WTRU 106识别该传输为了一EU。
根据本发明的第三实施例,由针对一EU而分派的特定无线资源的指示是藉由一WTRU特定掩蔽序列来提供。在目前高速下链封包存取(HSDPA)规格书中,一个字段1的40位是以一个由16位WTRU ID所产生的40位WTRU特定中间码序列所掩蔽。
依据第三个实施例,在字段1的WTRU特定掩蔽以一个独特且具有决定性的方式来修改,用以指示其为一EU的传输,而不是一高速下链封包存取(HSDPA)的传输。例如,在第二实施例中所产生的反向16位循环冗余检查(CRC)可用来驱动该40位长的掩蔽序列。如果该WTRU 106能有效译码由一WTRU特定掩蔽序列所接收的传输,该WTRU 106可识别出由一高速下链封包存取(HSDPA)的传输,而若是该WTRU 106能有效译码由一反向WTRU特定掩蔽序列所接收的传输,该WTRU 106可识别出由一EU的传输。
有关此方法,该WTRU 106可在已经接收仅该高速共享控制信道(HS-SCCH)传输的字段1之后,来区分EU或是高速下链封包存取(HSDPA)信道分派是否已经传输。
换句话说,WTRU IDs可由该网络以此方式所配置,所以一特定WTRU ID不会与另一个WTRU ID抵触。譬如,EU的一第一WTRU的反向ID可用来指示一第二WTRU的高速下链封包存取(HSDPA)服务,因此,可协助一UL资源分派信道和一高速共享控制信道(HS-SCCH)是否存在的同步侦测。
在本发明的一第四实施例中,由针对一EU所分派的特定无线资源的指示是藉由一无线资源控制(RRC)上下文信号所提供。较佳者,B节点104配置各个无线资源以用在UL无线资源分派传输和DL无线资源分派传输中。另外,一RNC 102是借着使用RRC发信号消息来配置各个无线资源以用在UL无线资源分派传输和DL无线资源分派传输中。
例如,一个来自RNC 102的RRC信号消息可通知一WTRU 106在哪个TTI去预期一高速共享控制信道(HS-SCCH)或是一UL资源分派信道。在目前的R5高速下链封包存取(HSDPA)规格书中,十五个时隙包含一个帧和三个时隙包含一个TTI。“偶数”的TTI可包含如第2、4、6、8、10、12和14的时隙,而“奇数”的TTI可包含第1、3、5、7、9、11、13和15的时隙。
依据本发明,一RRC传输信号可指示一个在“偶数”TTI中的传输是针对高速共享控制信道(HS-SCCH)的传输以及一个在“奇数”TTI中的传输是针对一UL资源分派信道的传输。借着不让在一高速共享控制信道(HS-SCCH)中的传输被传输到“奇数”TTI中,可保证对R5WTRU的反向兼容性。SF=128资源的相同集合可用在一高速共享控制信道(HS-SCCH)和一UL资源分派信道中。
根据本发明的第五实施例,由针对EU所分派的特定无线资源的指示是藉由一相关DL专用信道(DCH)的层1的指示所提供。一或更多的位在该相关DL
DCH是借着一固定预先决定计时关系来指示一UL资源分派信道作为相对于一高速共享控制信道(HS-SCCH)的逼近出现。
图3是根据本发明的具有用于实施UL信道分派信号的方法步骤流程200的流程图。在流程200(步骤202)起始后,无线资源分派的消息借着一共享控制信道从一B节点104传输到一WTRU 106。该WTRU 106在每一预定的TTI(例如,在每2ms)接收该消息并使用预定的编码来解调该消息(步骤204)。该WTRU 106随后判定该消息是否为针对该WTRU 106(步骤206),而一WTRU特定循环冗余检查可依此目的而使用。当WTRU106判定该消息为针对该WTRU 106时,该WTRU 106判定该消息是否为用于DL传输或是UL传输的无线消息分派来执行之前所描述的本发明任一实施例(步骤208)。该WTRU 106根据在步骤208的判断采取适当动作(步骤210)而藉由DL或UL信道来接收或是传输数据封包,譬如,该WTRU 106可精确识别何时经由该DL信道108去初始化一数据接收流程或是何时经由该UL信道110去初始化一数据传输流程。一般来说,高速下链封包存取(HSDPA)的高速共享控制信道(HS-SCCH)是以一固定的两个隙偏移来显示一WTRU进入的数据封包,反之,本发明则能够在WTRU有机会经由该UL传输一封包(例如自现在的四个隙)时通知该WTRU。
尽管本发明的特色与组件已经参照较佳实施例而详尽地显示和描述,熟习此技艺之人士将会了解,在不违背在上文中本发明所描述的保护范围下,在其中可以完成各种型式和细节的改变。

Claims (18)

1.一种通过信道分派信息而选择性分派一上行链路信道与一下行链路信道其中之一的无线资源的方法,所述信道分派信息通过一共享控制信道而从一B节点传输至一无线传输/接收单元,所述方法包含:
所述无线传输/接收单元接收信道分派信息以及所述信道分派信息是否准备分派无线资源至所述上行链路信道或是所述下行链路信道的一指示;
所述无线传输/接收单元侦测所述指示;以及
所述无线传输/接收单元基于所述侦测的指示来采取一适当的动作,其中针对所述上行链路信道与所述下行链路信道的其中之一通过所述信道分派信息而选择性分派无线资源。
2.如权利要求1所述的方法,其特征在于:所述适当的动作包含所述无线传输/接收单元起始一通过所述下行链路信道的数据接收程序。
3.如权利要求1所述的方法,其特征在于:所述适当的动作包含所述无线传输/接收单元起始一通过所述上行链路信道的数据传输程序。
4.如权利要求1所述的方法,其特征在于:所述指示为所述上行链路信道或是下行链路信道的信道化码的一组映像组合的利用。
5.如权利要求1所述的方法,其特征在于:所述无线传输/接收单元基于一无线传输/接收单元-特定循环冗余检查而判定该信道分派是否为针对所述无线传输/接收单元。
6.如权利要求5所述的方法,其特征在于:一无线传输/接收单元-特定循环冗余检查为利用一分派给所述无线传输/接收单元的标识符所产生。
7.一种提供用于支持一上行链路信道与一下行链路信道的信道分派信息以选择性分配所述上行链路信道与所述下行链路信息的无线资源的无线通信系统,所述系统包含:
至少一B节点;以及
至少一无线传输/接收单元,其通过一共享控制信道、所述上行链路信道以及所述下行链路信道而与所述B节点进行通信,其特征在于:
所述无线传输/接收单元配置以通过所述控制信道从所述B节点接收一消息,该消息包括所述信道分派信息以及所述信道分派信息是否准备分派无线资源至所述上行链路信道或是所述下行链路信道的一指示;
侦测所述指示;以及
基于所述侦测的指示而采取一适当的动作。
8.如权利要求7所述的无线通信系统,其特征在于:所述适当的动作包含所述无线传输/接收单元起始一通过所述下行链路信道的数据接收程序。
9.如权利要求7所述的无线通信系统,其特征在于:所述适当的动作包含所述无线传输/接收单元起始一通过所述上行链路信道的数据传输程序。
10.如权利要求7所述的无线通信系统,其特征在于:所述指示为所述上行链路信道或是下行链路信道的信道化码的一组映像组合的利用。
11.如权利要求7所述的无线通信系统,其特征在于:所述无线传输/接收单元基于一无线传输/接收单元-特定循环冗余检查而判定该信道分派是否为针对所述无线传输/接收单元。
12.如权利要求11所述的无线通信系统,其特征在于:所述无线传输/接收单元-特定循环冗余检查为利用一分派给所述无线传输/接收单元的标识符所产生。
13.一种无线传输/接收单元,包含:
用以接收信道分派信息以及所述信道分派信息是否准备分派无线资源至一上行链路信道或是一下行链路信道的一指示的装置,所述上行链路与所述下行链路信道的无线资源是经由所述信道分派信息而选择性分配;
用以侦测所述指示的装置;以及
用以基于所侦测的指示而采取一适当的动作的装置。
14.如权利要求13所述的无线传输/接收单元,其特征在于:所述适当的动作包含所述无线传输/接收单元起始一通过所述下行链路信道的数据接收程序。
15.如权利要求13所述的无线传输/接收单元,其特征在于:所述适当的动作包含所述无线传输/接收单元起始一通过所述上行链路信道的数据传输程序。
16.如权利要求13所述的无线传输/接收单元,其特征在于:所述指示为所述上行链路信道或是下行链路信道的信道化码的一组映像组合的利用。
17.如权利要求13所述的无线传输/接收单元,其特征在于:所述无线传输/接收单元基于一无线传输/接收单元-特定循环冗余检查而判定该信道分派是否是针对该无线传输/接收单元。
18.如权利要求17所述的无线传输/接收单元,其特征在于:所述无线传输/接收单元-特定循环冗余检查为利用一分派给所述无线传输/接收单元的标识符所产生。
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US9332569B2 (en) 2016-05-03
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BRPI0415785A (pt) 2007-03-06
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EP2640147A1 (en) 2013-09-18
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