CN103181106B - 确定信道配置 - Google Patents

确定信道配置 Download PDF

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CN103181106B
CN103181106B CN201180053243.6A CN201180053243A CN103181106B CN 103181106 B CN103181106 B CN 103181106B CN 201180053243 A CN201180053243 A CN 201180053243A CN 103181106 B CN103181106 B CN 103181106B
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channel configuration
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CN103181106A (zh
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黄睿
王平
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Intel Corp
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    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

本公开的实施例描述用于无线通信的方法、计算机可读介质以及系统配置。方法可包含接收包括索引的一系列符号的传送,以及基于该索引确定物理下行链路信道的多个配置。在各实施例中,物理下行链路信道的多个配置可包含为参考信号保留的一个或多个天线端口。中继节点(RN)可包含处理器和存储物理下行链路信道的多个配置的多个潜在组合的存储器。处理器可配置为接收包括索引的一系列符号的传送,并且匹配索引与多个潜在组合中的一个。施主演进基站(DeNB)可配置为将这样的索引编码到传送中。可以描述和/或要求保护其它实施例。

Description

确定信道配置
相关申请的交叉引用
本申请主张享有在2010年11月5日提交的题为“高级无线通信系统和技术(AdvancedWirelessCommunicationSystemsandTechniques)”的美国临时专利申请序列号61/410,740的优先权,其全部公开通过参考以其全部内容并入于此。
技术领域
本发明的实施例通常涉及无线传送领域,并且更特别地涉及信道配置的确定。
背景技术
本文提供的背景描述是为了通常呈现本公开的背景。目前指定的发明人的工作(到在此背景章节中描述的程度)以及可能不以其它方式胜任在提交时现有技术的描述的方面没有清楚地或隐含地被承认为相对于本公开的现有技术。除非在本文中以其它方式指示的,在此章节中描述的方式不是本公开中的权利要求的现有技术并且不被承认为包含在此章节中的现有技术。
3GPP长期演进(“LTE”)版本10(2011年3月)(“LTE标准”)提供演进分组系统(“EPS”)。EPS可包含演进通用陆地无线电接入网络(“E-UTRAN”)和演进分组核心(“EPC”)。
LTE版本10以及之后的版本被称为高级LTE(“LTE-A”)。LTE-A提供E-UTRAN中的中继节点(“RN”)的部署。RN可以在用户设备(“UE”)与服务RN的演进节点B(“eNB”)之间,被称为“施主(donor)”eNB或“DeNB”。DeNB又可与EPC(例如,移动管理实体(“MME”)和/或网关(例如,服务网关或“SGW”))的部件通信。
EPS的各种节点可以使用各种逻辑接口来通信。例如,eNB可以通过S1接口与MME/SGW通信。eNB可以通过X2接口与DeNB通信。RN可以使用E-UTRAN无线电接口(被称为“Un”接口)的修改版本来与DeNB无线通信。
下行链路信号可包含可以由UE装置使用来解调下行链路用户和/或控制数据的UE特定参考信号(“USRS”)、和/或用来确定类似于信道质量等事物的公共参考信号(“CRS”)。有时下行链路USRS被称作“下行链路解调参考信号”(“DMRS”),特别是在LTE的版本10和之后的版本中。
当RN通过Un接口与DeNB通信时,在物理资源块(“PRB”)对中可以复用中继物理下行链路控制信道(“R-PDCCH”)与中继物理下行链路共享信道(“R-PDSCH”)。然而,在非交错R-PDCCH(例如,模式2)中,Un接口的物理下行链路共享信道(“PDSCH”)传送模式可以基于USRS,而不是CRS。在这样的情况下,可以有为USRS保留的或“未使用的”两个{7、8}或四个{7、8、9、10}逻辑天线端口。
为确定是否为USRS保留两个或四个天线端口,已经提出可将位添加到更高层。此技术可以每个时隙节省多达6个资源要素(“RE”),并且可减少盲解码复杂性。然而,它可能需要LTE标准的修改并且可能添加更高信令传送延迟。
备选地,在非交错R-PDCCH中,已经提出可假定在R-PDCCH中使用USRS端口的最大数量(四个)。此技术可避免与更高层信令关联的添加的开销,但可能浪费RE(其中只有两个天线端口是未使用的)。因为有更多秩格式检测的需要,所以此技术也可能增加盲解码复杂性。此外,它可能添加用于秩的盲解码延迟。
附图说明
通过下文的详细描述结合附图将容易理解实施例。为便于此描述,类似的参考标号指代类似的结构元件。在附图的图中以示例的方式而不以限制的方式来图示实施例。
图1示意性地图示根据各实施例的示例演进分组系统(“EPS”)。
图2示意性地图示根据本公开的各实施例的示例物理资源块(“PRB”)。
图3示意性地图示根据本公开的各实施例的使用索引来确定多个物理下行链路信道配置的示例方法。
图4描绘根据各实施例的可用于将索引映射到物理下行链路信道配置的多个组合的示例表。
图5示意性地图示根据本公开的各实施例的将指示多个物理下行链路信道配置的索引编码到传送中的示例方法。
图6描绘根据各实施例的可用于实现各种公开的方法的示例系统。
具体实施方式
在下文的详细描述中,参考附图(其形成参考的一部分),其中通篇类似的数字指代类似的部件,并且其中作为可实践的图示实施例来示出。要理解的是,可利用其它实施例并且可以做出结构或逻辑的改变而不背离本公开的范围。因此,下文的详细描述不按限制的意义来理解,并且实施例的范围由所附的权利要求和它们的等效来限定。
可以用最有助于理解要求保护的主题的方式来将各种操作描述为依次的多个离散动作或操作。然而,描述的次序不应解释为暗示这些操作依赖于必要次序。特别地,可以不按呈现的次序来执行这些操作。可以按不同于所描述的实施例的次序来执行所描述的操作。在附加实施例中,可以执行各种附加操作和/或可以省略所描述的操作。
为了本公开的目的,短语“A和/或B”意味着(A)、(B)、或(A和B)。为了本公开的目的,短语“A、B、和/或C”意味着(A)、(B)、(C)、(A和B)、(A和C)、(B和C)、或(A、B和C)。
描述可使用短语“在一实施例中”或“在实施例中”,它们每个可涉及一个或多个相同或不同实施例。此外,如关于本公开的实施例所使用的,术语“包含”、“包括”、“具有”等是同义的。
如本文所使用的,术语“模块”可涉及、属于、或包括专用集成电路(“ASIC”)、电子电路、执行一个或多个软件或固件程序的处理器(共享的、专属的、或组)和/或存储器(共享的、专属的、或组)、组合逻辑电路、和/或提供所描述的功能性的其它合适部件。
在各实施例中,计算机实现的方法可包含由中继节点的处理器接收包括索引的一系列符号的传送。基于索引,处理器可确定物理下行链路信道的多个配置。物理下行链路信道的多个配置可包含为参考信号保留的一个或多个天线端口。在一些实施例中,物理下行链路信道可以是中继物理下行链路控制信道(“R-PDCCH”)。
在一些实施例中,确定多个配置可包含由处理器确定R-PDCCH是否是交错的。在一些实施例中,确定多个配置可包含由处理器确定R-PDCCH的资源分配类型。在一些实施例中,确定多个配置可包含由处理器确定R-PDCCH的解调类型。
在一些实施例中,确定多个配置可包含由处理器确定参考信号是用户设备(“UE”)特定参考信号(“USRS”)还是公共参考信号(“CRS”)。在一些实施例中,一个或多个天线端口可以是为USRS保留的天线端口。在一些实施例中,索引可以是四位长。确定物理下行链路信道的多个配置可包含由处理器确定除为参考信号保留的一个或多个天线端口以外的三个其它物理下行链路信道配置。
在一些实施例中,确定物理下行链路信道的多个配置可包含由处理器匹配索引与多个配置的多个潜在组合中的第一组合。在一些实施例中,索引可以至少部分基于密码本子集限制(codebookSubsetRestriction)位图。
在一些实施例中,中继节点(“RN”)可包含无线网络适配器、处理器和存储物理下行链路信道的多个配置的多个潜在组合的存储器。处理器可配置为通过无线网络适配器来接收包括索引的一系列符号的传送。处理器还可配置为匹配索引与多个潜在组合中的一个。
在一些实施例中,施主演进基站(“DeNB”)可包含无线网络适配器和处理器。处理器可配置为生成用于传送的一系列符号。这一系列符号可包含指示物理下行链路信道的多个配置的索引,物理下行链路信道的多个配置包括为参考信号保留的一个或多个天线端口。处理器还可配置为通过无线网络适配器将这一系列符号传送到RN。
在各实施例中,可实践和/或执行具有多个上述操作的方法和/或非暂时性计算机可读介质。在各实施例中,器件和/或系统可配置为实践这样的方法。
参考图1,根据各实施例的演进分组系统(“EPS”)10可包含具有一个或多个移动管理实体(“MME”)14和一个或多个SGW16的演进分组核心(“EPC”)12。在图1中,在EPC12中有两个计算机系统,每个计算机系统起到MME14和SGW16两者的作用。EPS10还可包括演进通用陆地无线电接入网络(“E-UTRAN”)18,该E-UTRAN18包含UE装置22可连接到其的一个或多个演进节点B(“eNB”)20。UE装置22也可经由DeNB24和RN26而连接到E-UTRAN18。
在背景中所描述的各种接口可存在于EPS10的各种节点之间。例如,除其它接口(未示出)以外,RN26和DeNB24还可使用Un接口28来通信。Un接口28可包含各种信道,其中包括R-PDCCH和中继物理下行链路共享信道(“R-PDSCH”)。
参考图2,在PRB对中可以一起复用Un接口28的R-PDCCH和R-PDSCH。R-PDCCH可以在第一时隙中并且R-PDSCH可以在第二时隙中。尽管R-PDSCH可包含用于USRS的四个天线端口,但为R-PDCCH的USRS保留两个天线端口(例如,{7、8})还是四个天线端口(例如,{7、8、9、10})可能不是明显的。
可以联合编码和解码现存的信道配置参数的组合,而不是如背景中所描述的将信令位添加到更高层或始终假定四个端口,以使除它们以前运送的信息以外,它们也指示保留的天线端口的数量。例如,假定每个一个位的两个参数和两个位的第三参数单独地用来指示三个不同的信道配置。利用单独编码/解码的三个参数,只可以通信八个可能信道组合(23)。然而,如果将三个参数联合编码/解码为单个索引,则可以通信十六(24)个可能信道配置组合。
图3描绘可由RN(例如,图1中的RN26)实现的联合解码来确定物理下行链路信道(例如,R-PDCCH)的多个配置的示例方法300。在302处,例如,可以从DeNB(例如,DeNB24)接收包括索引的一系列符号的传送。在304处,RN可以从该索引确定基于该索引的物理下行链路信道的多个配置。例如,在306处,RN可以从索引确定Un信道(例如,28)的R-PDCCH是否被交错。在308处,RN可以从相同的索引确定R-PDCCH的资源分配类型。在310处,RN可以从索引确定R-PDCCH的调制类型(例如,USRS或CRS)。在312处,RN可以再次从索引确定为R-PDCCH的参考信号(例如,USRS)保留的一个或多个天线端口。
索引可用于以各种方式确定信道的多个配置。在一些实施例中,例如索引具有四位的那些实施例中,索引可以是到包含信道配置组合的高达十六个记录的数据库表的索引。
在图4中示出此情况的示例。索引具有四位,并且可以是从0到15的任何数(尽管在此示例中没有使用索引=15)。在中间列的标题中示出三个遗留信道配置参数来图示在现有技术中形成索引的位会运送什么信息,以及那些位现在如何用于将索引形成到表中。在此示例中,遗留信道配置参数包括R-PDCCH-demodulationRs(一个位)(其确定R-PDCCH的调制类型)、R-PDCCH-interleaved(一个位)(其指示R-PDCCH是否为交错的)、以及R-PDCCH-resourceAllocationType(两个位)(其指示用于R-PDCCH的正交频分复用(“OFDM”)符号(例如,00符号1-6;01符号2-6;10符号3-6))。在最右列中示出为USRS保留的天线端口的另一信道配置。
一旦从DeNB接收到包括索引的一系列符号的传送,RN可配置为匹配索引与由图4的表中的行表示的多个潜在组合中的一个。例如,如果RN接收包括值为2(0010)的索引的传送,则RN可参考图4的表来确定R-PDCCH的调制类型是USRS,R-PDCCH是非交错的,它的OFDM符号是3-6,并且有为USRS保留的两个天线端口{7、8}。作为另一示例,如果RN接收包括值为14(1110)的索引的传送,则RN可参考图4的表来确定R-PDCCH的调制类型是USRS,R-PDCCH是非交错的,它的OFDM符号是3-6,并且有为USRS保留的四个天线端口({7、8、9、10})。
可以使用除了图4中示出的那些之外的参数来编码信道配置的指示,包括用于USRS的天线端口。例如,在各实施例中,可以代替地使用例如codebookSubsetRestriction等参数。codebookSubsetRestriction是规定预编码器密码本子集的位图,其中UE装置可报告各条信息,包括预编码矩阵指示符(“PMI”)、秩指示(“Rl”)和预编码类型指示符。在一些实施例中,除它通常指示的以外,密码本子集限制值2可指示为USRS保留两个天线端口。值4可指示为USRS保留四个天线端口。
正如RN(例如,RN26)可配置为解码索引来确定信道配置的组合,节点(例如,DeNB24)可配置为编码具有索引的传送来通信信道配置。
例如,可以由DeNB(例如,图1中的DeNB24)来实现图5中所描绘的方法500,以编码具有索引的到RN的传送。在502处,DeNB可生成用于传送的一系列符号。这一系列符号可包含指示物理下行链路信道的多个配置的索引,物理下行链路信道的多个配置包括为参考信号保留的一个或多个天线端口。在一些实施例中,物理下行链路信道可以是R-PDCCH。类似于上文,在一些实施例中,由索引指示的多个配置可包含R-PDCCH是否为交错的、R-PDCCH的资源分配类型、R-PDCCH的解调类型以及为USRS保留的一个或多个天线端口中的一个或多个。在504处,DeNB可将这一系列符号传送到RN。
可以使用合适的硬件和/或软件来将本文所描述的技术和器件实现到系统中来如所希望地配置。图6图示用于一个实施例的示例系统600,该系统600包含一个或多个处理器604、耦合到处理器604中的至少一个的系统控制逻辑608、耦合到系统控制逻辑608的系统存储器612、耦合到系统控制逻辑608的非易失性存储器(NVM)/存储616、以及耦合到系统控制逻辑608的一个或多个通信接口620。
用于一个实施例的系统控制逻辑608可包含任何合适的接口控制器来将任何合适的接口提供到处理器604中的至少一个和/或提供到与系统控制逻辑608通信的任何合适的装置或部件。
用于一个实施例的系统控制逻辑608可包含一个或多个存储器控制器来将接口提供到系统存储器612。系统存储器612可用于加载和存储例如用于系统600的数据和/或指令。例如,用于一个实施例的系统存储器612可包含任何合适的易失性存储器,例如合适的动态随机存取存储器(“DRAM”)。
用于一个实施例的系统控制逻辑608可包含一个或多个输入/输出(“I/O”)控制器来将接口提供到NVM/存储616和无线网络适配器620。
例如,NVM/存储616可用于存储数据和/或指令。NVM/存储616例如可包含任何合适的非易失性存储器(例如,闪速存储器)和/或例如可包含任何合适的非易失性存储装置(例如,一个或多个硬盘驱动(“HDD”)、一个或多个固态驱动、一个或多个压缩盘(“CD”)驱动、和/或一个或多个数字多功能盘(DVD)驱动)。
NVM/存储616可包含在其上安装系统600的装置的存储资源物理部分,或者NVM/存储616可以是由该装置访问,但不一定是该装置的一部分。例如,可以经由无线网络适配器620提供网络访问NVM/存储616。
特别地,系统存储器612和NVM/存储616可分别包含控制模块624的暂时和持久拷贝。在各实施例中,系统存储器612和NVM/存储616还可存储(如在626处所指示的)物理下行链路信道的多个配置的多个潜在组合。在一些实施例中,多个潜在信道配置626可以采用表(例如,在图4中示出的表)的形式。如上所述,控制模块624可包含指令,当处理器604中的至少一个执行该指令时,引起系统600使用索引和存储的多个潜在信道配置626来编码具有索引的传送(其中系统600是DeNB)并且通过解码信道的索引来确定信道配置(其中系统是RN)。在一些实施例中,控制模块624可额外地/备选地位于系统控制逻辑608和/或无线网络适配器620中。
无线网络适配器620可提供用于系统600的接口来提供一个或多个网络和/或与任何其它合适的装置通信。无线网络适配器620可包含任何合适的硬件和/或固件。无线网络适配器620可使用一个或多个天线。
对于一个实施例,可以一起封装处理器604中的至少一个与用于系统控制逻辑608的一个或多个控制器的逻辑。对于一个实施例,可以一起封装处理器604中的至少一个与用于系统控制逻辑608的一个或多个控制器的逻辑来形成系统级封装(“SiP”)。对于一个实施例,可以在与用于系统控制逻辑608的一个或多个控制器的逻辑相同的裸芯片上集成处理器604中的至少一个。对于一个实施例,可以在与用于系统控制逻辑608的一个或多个控制器的逻辑相同的裸芯片上集成处理器604中的至少一个来形成芯片上系统(“SoC”)。
系统600可以是EPS中的各种节点(例如RN或DeNB)、以及台式或膝上计算机、移动电话、智能电话或适合于接收无线通信信号的任何其它装置。在各实施例中,系统600可具有更多或者更少的部件和/或不同的架构。
尽管本文已经为了描述的目的而图示并描述某些实施例,但为实现相同目的而计算的多种备选方案和/或等效实施例或实现可替代示出并描述的实施例而不背离本公开的范围。本申请旨在覆盖本文所论述的实施例的任何适应或变化。因此,明显地旨在只由权利要求及其等效来限制本文所描述的实施例。

Claims (29)

1.一种计算机实现的方法,包含:
由中继节点(“RN”)的处理器接收包括索引值的一系列符号的传送,其中所述索引值对多个信道配置参数联合编码;以及
由所述处理器基于所述索引值确定中继物理下行链路控制信道R-PDCCH的多个信道配置参数;
其中所述R-PDCCH的所述多个信道配置参数包括规定为参考信号保留一个或多个天线端口中的哪些天线端口的参数,并且还包括一个或多个附加信道配置参数。
2.如权利要求1所述的计算机实现的方法,其中确定所述多个信道配置参数包括由所述处理器确定所述R-PDCCH是否为交错的。
3.如权利要求1所述的计算机实现的方法,其中确定所述多个信道配置参数包括由所述处理器确定所述R-PDCCH的资源分配类型。
4.如权利要求1所述的计算机实现的方法,其中确定所述多个信道配置参数包括由所述处理器确定所述R-PDCCH的解调类型。
5.如权利要求1所述的计算机实现的方法,其中确定所述多个信道配置参数包括由所述处理器确定所述参考信号是UE特定参考信号USRS还是公共参考信号(“CRS”)。
6.如权利要求5所述的计算机实现的方法,其中所述一个或多个天线端口是为所述USRS保留的天线端口。
7.如权利要求1所述的计算机实现的方法,其中所述索引值是四位长,并且确定所述R-PDCCH的所述多个信道配置参数包括由所述处理器确定除规定为所述参考信号保留所述一个或多个天线端口中的哪些天线端口的所述参数以外的三个其它R-PDCCH信道配置参数。
8.如权利要求1所述的计算机实现的方法,其中确定所述R-PDCCH的所述多个信道配置参数包括由所述处理器匹配所述索引值与信道配置参数组合表中的信道配置参数的多个潜在组合中的第一组合。
9.如权利要求1所述的计算机实现的方法,其中所述索引值至少部分基于密码本子集限制位图。
10.一种中继节点RN,包含:
无线网络适配器;
处理器;
存储器,存储物理下行链路信道的多个信道配置参数的多个潜在组合,每个组合对应于索引值;
其中所述处理器配置为:
通过所述无线网络适配器从施主演进节点B(“DeNB”)接收包括索引值的一系列符号的传送;以及
匹配所述索引值与所述多个潜在组合中的对应组合以根据匹配的组合的多个信道配置参数来配置所述物理下行链路信道。
11.如权利要求10所述的RN,其中所述物理下行链路信道是中继物理下行链路控制信道R-PDCCH。
12.如权利要求11所述的RN,其中所述多个配置参数包括所述R-PDCCH是否为交错的。
13.如权利要求11所述的RN,其中所述多个信道配置参数包括所述R-PDCCH的资源分配类型。
14.如权利要求11所述的RN,其中所述多个信道配置参数包括所述R-PDCCH的解调类型。
15.如权利要求11所述的RN,其中所述多个信道配置参数包括参考信号是UE特定参考信号USRS还是公共参考信号(“CRS”)。
16.如权利要求15所述的RN,其中所述多个信道配置参数包括规定为所述USRS保留一个或多个天线端口中的哪些天线端口的参数。
17.如权利要求10所述的RN,其中所述索引值是四位长,并且所述物理下行链路信道的所述多个信道配置参数包括四个配置参数。
18.如权利要求10所述的RN,其中所述索引值至少部分基于密码本子集限制位图。
19.一种施主演进节点B(“DeNB”),包含:
无线网络适配器;以及
处理器,配置为:
生成用于传送的一系列符号,所述一系列符号包括对物理下行链路信道的多个信道配置参数的组合联合编码的索引,所述物理下行链路信道的所述多个信道配置参数包括规定为参考信号保留一个或多个天线端口中的哪些天线端口的参数,并且还包括一个或多个附加信道配置参数;以及
通过所述无线网络适配器将所述一系列符号传送到中继节点(“RN”)。
20.如权利要求19所述的DeNB,其中所述物理下行链路信道是中继物理下行链路控制信道R-PDCCH。
21.如权利要求20所述的DeNB,其中所述多个信道配置参数包括所述R-PDCCH是否为交错的。
22.如权利要求20所述的DeNB,其中所述多个信道配置参数包括所述R-PDCCH的资源分配类型。
23.如权利要求20所述的DeNB,其中所述多个信道配置参数包括所述R-PDCCH的解调类型。
24.如权利要求20所述的DeNB,其中所述多个信道配置参数包括所述参考信号是UE特定参考信号USRS还是公共参考信号(“CRS”)。
25.如权利要求24所述的DeNB,其中所述多个信道配置参数包括规定为所述USRS保留一个或多个天线端口中的哪些天线端口的参数。
26.如权利要求19所述的DeNB,其中所述索引是四位长,并且所述物理下行链路信道的所述多个信道配置参数包括四个信道配置参数。
27.如权利要求19所述的DeNB,其中所述索引至少部分基于密码本子集限制位图。
28.一种计算机实现的方法,包含:
由施主演进节点B(“DeNB”)生成用于传送的一系列符号,所述一系列符号包括对物理下行链路信道的多个信道配置参数的组合联合编码的索引,所述物理下行链路信道的所述多个信道配置参数包括规定为用户设备(“UE”)特定参考信号(“USRS”)保留一个或多个天线端口中的哪些天线端口的参数,并且还包括一个或多个附加信道配置参数;以及
由所述DeNB将所述一系列符号传送到中继节点(“RN”)。
29.如权利要求28所述的计算机实现的方法,其中所述多个信道配置参数包括所述物理下行链路信道是否为交错的、所述物理下行链路信道的资源分配类型或所述物理下行链路信道的解调类型中的一个或多个。
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