CN107733624A - 参考信号生成以及确定参考信号资源分配 - Google Patents

参考信号生成以及确定参考信号资源分配 Download PDF

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Publication number
CN107733624A
CN107733624A CN201710417898.6A CN201710417898A CN107733624A CN 107733624 A CN107733624 A CN 107733624A CN 201710417898 A CN201710417898 A CN 201710417898A CN 107733624 A CN107733624 A CN 107733624A
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dci
devices
enb
reference signal
instruction
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CN107733624B (zh
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朱源
A.戴维多夫
陈晓刚
牛华宁
符仲凯
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Apple Inc
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Intel Corp
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    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract

本发明主题涉及参考信号生成以及确定参考信号资源分配。实施例包括用于参考信号生成和资源分配的装置、方法、计算机可读介质和系统配置。在实施例中，无线通信装置可包括控制模块，其可由处理器操作并且配置成通过无线通信接口将对于UE装置特定的参数传输给UE装置，其中参数可由eNB使用来生成将要被发送给UE装置的用户设备特定的参考信号（UE‑RS）。参数可由UE装置使用来识别UE‑RS以便促进多输入多输出通信的解调。在实施例中，控制模块可配置成在存储器中存储优先规则并且基于分配给UE装置的UE‑RS资源和优先规则来确定分配给另一个UE装置的UE‑RS资源。

Description

参考信号生成以及确定参考信号资源分配
相关申请的交叉引用
本申请要求2011年4月29日提交的、题为“高级无线通信系统与技术”的美国临时专利申请No.61/481,024的优先权，通过全部引用而据此结合其整个的公开内容。
技术领域
本发明的实施例通常涉及无线传输的领域，并且更具体地，涉及参考信号生成和参考信号资源分配。
背景技术
本文提供的背景描述是为了通常呈现本公开的上下文的目的。就本背景部分中所描述的来说当前指名的发明人的工作，以及在提交时不能另外地看作现有技术的描述的若干方面，既未明白地也未隐含地被认为是反对本公开的现有技术。除非在本文中另外表明，本部分中描述的方法不是针对本公开中的权利要求的现有技术并且通过包含在本部分中并不被认为是现有技术。
在3GPP长期演进（“LTE”）版本10（2011年3月）（“LTE标准”）中，使用两个码分复用（“CDM”）组，用户设备（“UE”）特定的参考信号（“UE-RS”）可支持多达8个传输层。CDM组中之一可利用下列UE-RS天线端口的集合：{7，8，11，13}。另一个CDM组可利用下列UE-RS天线端口的集合：{9，10，12，14}。
在LTE小区中为UE装置生成的伪随机序列对于那个小区可以是特定的或者是“小区特定的”。这个生成可涉及两个可能的扰码身份（“SCID”）。在实现多用户多输入多输出（“MU-MIMO”）传输的实施例中，可以存在有多达4个复合层用于传输数据。每个UE装置可具有或者1个或者2个复合层。然而，MU-MIMO传输对于给定的UE装置来说可以是透明的。例如，可以不通过信令来指示共同调度的UE装置的存在，并且可以限制来自共同调度的UE装置的干扰的减轻。
附图说明
通过以下详细的描述连同附图，将会容易地理解实施例。为了便于这个描述，相似的附图标记表示相似的结构元件。在附图的图中，通过示例的方式而不是通过限制的方式来说明实施例。
图1说明了根据各种实施例的示例无线通信网络。
图2示意性地描绘了根据各种实施例的、用于参考信号的生成的参数的传输。
图3示意性地描绘了根据各种实施例的示例系统。
具体实施方式
在以下详细的描述中，参考构成它的一部分的附图，其中自始至终相似的数字表示相似的部分，并且其中通过说明的方式示出可以实施的实施例。将会理解，在未背离本公开的范围的情况下，可以利用其它的实施例并且可以进行结构的或逻辑的改变。因此，将不会在限制的意义上理解以下详细的描述，并且通过所附的权利要求书和它们的等同物来限定实施例的范围。
各种操作可以以最有助于理解要求保护的主题的方式被称作是按次序的多个离散的动作或操作。然而，描述的顺序不应当被理解为暗示了这些操作是必然顺序相关的。特别地，这些操作可以不按照呈现的顺序来执行。所描述的操作可以按照与所描述的实施例不同的顺序来执行。可以执行各种附加的操作和/或可以在附加的实施例中省略所描述的操作。
为了本公开的目的，短语“A和/或B”意指（A）、（B）或（A和B）。为了本公开的目的，短语“A、B和/或C”意指（A）、（B）、（C）、（A和B）、（A和C）、（B和C）或（A、B和C）。
描述可使用短语“在实施例中”或“在多个实施例中”，它们可各自指相同或不同的实施例中的一个或多个。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”可以指下列项、可以是下列项的一部分或可以包括下列项：特定用途集成电路（“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、专用的或组）和/或存储器（共享的、专用的或组）、组合逻辑电路和/或提供所描述的功能性的其它适当的部件。如本文所使用的，“计算机实现的方法”可以指由一个或多个处理器、具有一个或多个处理器的计算机系统、例如智能电话的移动装置（其可包括一个或多个处理器）、平板、膝上型计算机、机顶盒、游戏控制台等等执行的任何方法。
在各种实施例中，无线通信装置可包括处理器、无线通信接口、耦合到处理器的存储器和将要由处理器操作的控制模块。控制模块可配置成通过无线通信接口将对用户设备（“UE”）装置特定的参数传输到UE装置；其中所述参数可由演进的节点B（“eNB”）使用来生成将要被发送到UE装置的用户设备特定的参考信号(“UE-RS”)。参数可由UE装置使用来识别UE-RS以便促进多输入多输出通信的解调。在各种实施例中，控制模块可通过处理器来操作并且被配置成在存储器中存储优先规则以及基于分配给所述UE装置的UE-RS资源和优先规则来确定分配给另一个UE装置的UE-RS资源。可以提供方法、系统和计算机可读介质用于执行类似的操作。
现在参考图1，无线通信系统10在单个小区12中包括宏eNB 14和两个射频拉远头（remote radio head）（“RRH”）16：RRH A和RRH B。在小区12内，三个用户设备（“UE”）装置18（UE A、UE B和UE C）可被连接到无线通信网络10.
宏eNB 14可将秩为2的物理下行链路共享信道（“PDSCH”）传输给UE A。这个传输可包括UE A被分配UE特定的参考信号（“UE-RS”）天线端口7和8、以及扰码身份（“SCID”）0的指示。RRH A可将秩为2的PDSCH传输给UE B。这个传输可包括UE B被分配UE-RS天线端口7和8、以及SCID 1的指示。
然而，如果RRH B试图将秩为1的PDSCH传输给UE C，则所有可能的秩为1的UE-RS序列可以已经被分配给宏eNB 14和RRH A。在一些实施例中，为了解决小区12内UE-RS序列的不足，可以在小区12内重新使用UE-RS序列和/或可以为小区12定义更多的UE-RS序列。
例如，可以例如通过诸如宏eNB 14的接入节点，使用对于诸如UE装置18中的任何一个的UE装置来说特定的参数来生成UE-RS。UE-RS可以由UE装置18接收并且被UE装置18使用来促进多输入多输出（“MIMO”）通信的解调。
在各种实施例中，可以例如在每个LTE子帧的开始，使用下列方程来初始化 生成UE-RS的诸如宏eNB 14的接入节点的伪随机序列发生器：
方程1：
对于UE装置特定的参数可包括方程1的参数中的一个或多个。在各种实施例中，可以是无线帧中的时隙号。可以是物理小区层身份。可以是SCID。
在各种实施例中，可以通过诸如宏eNB 14的接入节点将参数提供给UE装置18。参考图2，UE装置200和eNB 202可以在204发起无线网络连接。在206，eNB 202可使用例如无线电资源控制（“RRC”）信令来将例如方程1的参数传输给UE装置200。在208，eNB装置202可使用参数将由UE装置200生成的UE-RS传输给eNB 202。UE装置200可能够使用它在206接收的参数来识别UE-RS。基于UE-RS，UE装置可解调MIMO传输。通过将参数从eNB装置202传输到UE装置200，也许可能在单个小区内重新使用和/或定义更多的UE-RS序列。
传输参数的一种方式是将信令位添加到现有的通信。例如，如图1中诸如宏eNB 14的接入节点可以使用下行链路控制信息（“DCI”）将参数传输给UE装置18。DCI可以是如在LTE标准中定义的格式2C的扩展或新的格式2D，并且可以包括3个或更多个位，例如4个位。这可以使能格式2D中的SCID的信令以及格式2C中的附加的SCID信令（例如，添加SCID 2和SCID 3）。
附加位还可用来指示UE-RS天线端口用于各种秩的MIMO通信。例如，在秩为1和秩为2的MIMO DCI通信中，UE-RS天线端口11和13可以连同SCID 0或1被指示。当UE装置的复合秩是4时，这可以使得UE装置能够传输正交的UE-RS序列。
因此，在各种实施例中，DCI通信可能够指示0、1、2或3的SCID。在各种实施例中，DCI附加地或备选地可能够指示UE-RS端口11或13同时还指示0或1的SCID。在一些实施例中，可将信令位添加到可使能两者中任一个的指示的格式2C DCI通信。
传输参数的另一种方式是包括参数作为多位信道状态信息参考信号（“CSI-RS”）的一部分，其中参数是值。在各种实施例中，可以例如在每个LTE子帧的开始，使用下列方程来初始化生成UE-RS的接入节点的伪随机序列发生器：
方程2：
这与方程1类似，除了的添加。可包括可在DCI通信中由接入节点传输给UE装置的2个位。更多或更少的位也许是可能的。在各种实施例中，可起子小区标识符的作用。
返回参考图1，在各种实施例中，在小区12中操作的UE装置18可利用具有选择性的（与平坦相反的）频率的信道。减轻在选择性信道内于子载波上操作的UE装置之间的干扰可能是困难的，因为信道的传输协方差矩阵可能不可用来接近信道的子载波的信道协方差矩阵。
因此，UE装置18可包括可配置成在UE装置18的存储器中存储优先规则的控制模块。UE装置18可基于分配给所述UE装置18的UE-RS资源和优先规则来确定分配给相同小区12内的另一个UE装置的UE-RS资源。
例如，宏eNB 14可配置成基于UE-RS资源标识符元组{UE-RS天线端口，SCID}的有序列表（例如下列：（7，0）>（8，0）>（7，1）>（8，1））来分配秩为1的UE-RS资源给UE装置18。因此，如果例如UE B的UE装置18被分配UE-RS端口8和SCID 0，UE B可假定至少一些UE-RS资源被分配给另一个UE装置18（例如UE A或UE C）。例如，UE B可假定UE-RS天线端口7和SCID 0被分配给UE A或UE C。
作为另一个示例，下列有序列表可被例如宏eNB 14的eNB使用来分配秩为2的UE-RS资源：（7，8，0）>（7，8，1）。前两个数字可以是UE-RS天线端口并且最后的数字可以是SCID，尽管可以改变顺序。如果例如UE B的UE装置18被分配UE-RS端口7和8以及SCID 1，UE B可假定至少一些UE-RS资源被分配给另一个UE装置18（例如UE A或UE C）。例如，UE B可假定或者UE-RS天线端口7和SCID 0的组合或者天线端口8和SCID 0的组合或两者被分配给UE A或UEC。
取决于哪些UE-RS资源被分配给UE装置18，并且更具体地，分配的UE-RS资源在优先规则中存在于何处，UE装置18可以或者可能不能够假定UE-RS资源被分配给小区中的其它UE装置。在UE装置18不能够进行假定的情况下，可以使用下行链路信令来代替基于优先规则的假定或者除了基于优先规则的假定还可以使用下行链路信令。
例如，在上面的示例中，UE-RS标识符元组（7，0）是第一个将要被分配的。如果例如UE B的UE装置18被分配UE-RS端口7和SCID 0，则那个UE装置可能不能够假定可以在（7，0）之后被分配例如（8，0）的其它UE-RS资源被分配给小区中的其它UE装置。在这样的情况下，例如宏eNB 14的接入节点可利用下行链路信令来指示是否将UE-RS天线端口和SCID 0分配给UE B。
可使用适当的硬件和/或软件来任意地配置而将本文所描述的技术和设备实施进系统中。针对一个实施例，图3说明了以包括一个或多个处理器304、耦合到处理器304中的至少一个的系统控制逻辑308、耦合到系统控制逻辑308的系统存储器312、耦合到系统控制逻辑308的非易失性存储器（NVM）/存储装置316、以及耦合到系统控制逻辑308的一个或多个无线通信接口320的系统300的形式的示例无线通信装置。
一个实施例的系统控制逻辑308可包括任何适当的接口控制器以提供任何适当的接口给处理器304中的至少一个和/或给与系统控制逻辑308通信的任何适当的装置或部件。
一个实施例的系统控制逻辑308可包括一个或多个存储器控制器以提供接口给系统存储器312。系统存储器312可用来例如为系统300加载和存储数据和/或指令。例如，一个实施例的系统存储器312可包括任何适当的易失性存储器，诸如适当的动态随机存取存储器（“DRAM”）。
一个实施例的系统控制逻辑308可包括一个或多个输入/输出（“I/O”）控制器以提供接口给NVM/存储装置316和无线通信接口320。
例如，NVM/存储装置316可用来存储数据和/或指令。例如，NVM/存储装置316可包括任何适当的非易失性存储器（诸如闪速存储器），和/或例如，可包括任何适当的非易失性存储装置（诸如一个或多个硬盘驱动器（“HDD”）、一个或多个固态驱动器、一个或多个光盘（“CD”）驱动器和/或一个或多个数字化通用光盘（“DVD”）驱动器。
NVM/存储装置316可包括物理上是其上安装有系统300的装置的一部分的存储资源或者它可以被该装置访问但是不必是该装置的一部分。例如，可经由无线通信接口320通过网络访问NVM/存储装置316。
特别地，系统存储器312和NVM/存储装置316可分别包括控制模块324的暂时的和永久的副本。如上所述，控制模块324可包括当由处理器304中的至少一个执行时导致系统300生成具有参数的参考信号（例如UE-RS或UE-RS）、传输那个参数和/或利用UE-RS优先规则的指令。在一些实施例中，控制模块324可附加地/备选地位于系统控制逻辑308中。
无线通信接口320可为系统300提供接口以便通过一个或多个网络进行通信和/或与任何其它适当的装置进行通信。无线通信接口320可包括任何适当的硬件和/或固件，例如无线网络适配器。无线通信接口320可使用一个或多个天线。
针对一个实施例，处理器304中的至少一个可与系统控制逻辑308中的一个或多个控制器的逻辑封装在一起。针对一个实施例，处理器304中的至少一个可与系统控制逻辑308中的一个或多个控制器的逻辑封装在一起以便形成封装中的系统（“SiP”）。针对一个实施例，处理器304中的至少一个可与系统控制逻辑308中的一个或多个控制器的逻辑一起集成在相同的管芯上。针对一个实施例，处理器304中的至少一个可与系统控制逻辑308中的一个或多个控制器的逻辑一起集成在相同的管芯上以便形成芯片上的系统（“SoC”）。
系统300可以是台式或膝上型计算机、基站、eNB、移动电话、智能电话、平板、机顶盒、游戏控制台或适合于传输或接收无线通信信号的任何其它装置。在各种实施例中，系统300可具有或多或少的部件和/或不同的体系结构。例如，在图3中，系统300包括全球定位系统（“GPS”）模块338、键盘346、液晶显示器（“LCD”）屏幕350确定系统300的位置、图形处理器358、扬声器362、触摸屏366（其在一些情况下可以与LCD显示器350相同）以及可以通过处理器操作以捕获图像用于存储在NVM或存储装置316中的照相机372。
虽然为了描述的目的已经在本文中说明和描述了一些实施例，但是在未背离本公开的范围的情况下，打算达到相同的目的的各种各样的备选的和/或等同的实施例或实现方式可以替代所示出和描述的实施例。本申请的意图是覆盖本文所讨论的实施例的任何修改或变化。因此，很显然意图是本文所描述的实施例仅仅由权利要求书和它的等同物来限定。

Claims (25)

1.一种演进的节点B eNB，被配置成：
使用无线电资源控制RRC信令将参考信号RS参数传输到用户设备UE；
使用下行链路控制信息DCI将扰码身份SCID传输到所述UE；
基于所述RS参数和所述SCID生成用户设备特定的参考信号UE-RS；以及
传输所述UE特定的参考信号以便促进多输入多输出MIMO传输的解调。
2.如权利要求1所述的eNB，其中所述RS参数是子小区标识符。
3.如权利要求1所述的eNB，其中所述DCI包括用来指示所述SCID的1位。
4.如权利要求1所述的eNB，其中所述DCI具有DCI 2C或DCI 2D格式。
5.如权利要求1所述的eNB，其中所述eNB要进一步传输物理下行链路共享信道连同所述UE特定的参考信号。
6.如权利要求1至5中的任何一项所述的eNB，其中所述eNB要基于所述RS参数和所述SCID来确定初始化值并且基于所述初始化值来生成所述UE-RS。
7.一种用户设备UE，被配置成：
通过无线电资源控制RRC接收参考信号RS参数；
通过下行链路控制信息DCI接收扰码身份SCID；
基于所述RS参数和所述SCID识别用户设备特定的参考信号UE-RS；以及
基于所述UE-RS来接收物理下行链路共享信道PDSCH。
8.如权利要求7所述的UE，其中所述RS参数是子小区标识符。
9.如权利要求7所述的UE，其中所述DCI包括用来指示所述SCID的1位。
10.如权利要求7所述的UE，其中所述DCI具有DCI 2C或DCI 2D格式。
11.如权利要求7至10中的任何一项所述的UE，其中所述UE要基于所述RS参数和所述SCID来确定初始化值并且基于所述初始化值来识别所述UE-RS。
12.一种在演进的节点B eNB中实现的设备，包括：
用于基于使用扰码身份和对于用户设备UE装置特定的参考信号RS参数值确定的初始化值来生成用户设备特定的参考信号UE-RS的部件，其中所述UE-RS能够由所述UE装置使用来促进由多输入多输出通信的所述UE装置的解调；以及
用于使用下行链路控制信息DCI通过无线通信接口将所述扰码身份和所述RS参数值的指示传输给所述UE装置的部件。
13.如权利要求12所述的设备，其中所述RS参数值是子小区标识符并且所述扰码身份的指示是所述DCI中的单个位。
14.如权利要求12所述的设备，其中所述DCI是DCI格式2C的扩展或者是DCI格式2D并且包括多于3个位。
15.如权利要求14所述的设备，其中所述RS参数值是子小区标识符并且指示符用来使用所述DCI中的单个位来指示所述扰码身份。
16.如权利要求12所述的设备，其中所述指示将要指示UE-RS端口11或13。
17.如权利要求12所述的设备，其中用于将所述RS参数值的指示传输给所述UE装置的部件包括用于传输多位信道状态信息参考信号CSI-RS的部件。
18.如权利要求17所述的设备，其中由所述eNB使用来生成所述UE-RS的初始化值通过下列方程来确定：
其中是无线帧中的时隙号，是物理小区层身份，是扰码身份，并且是所述RS参数值。
19.一种计算机可读的存储介质，其上存储有指令，所述指令在被执行时使计算装置执行下列操作，包括：
基于使用扰码身份和对于用户设备UE装置特定的参考信号RS参数值确定的初始化值来由演进的节点B eNB生成用户设备特定的参考信号UE-RS，其中所述UE-RS能够由所述UE装置使用来促进由多输入多输出通信的所述UE装置的解调；以及
使用下行链路控制信息DCI通过无线通信接口由所述eNB将所述扰码身份和所述RS参数值的指示传输给所述UE装置。
20.如权利要求19所述的计算机可读的存储介质，其中所述RS参数值是子小区标识符并且所述扰码身份的指示是所述DCI中的单个位。
21.如权利要求19所述的计算机可读的存储介质，其中所述DCI是DCI格式2C的扩展或者是DCI格式2D并且包括多于3个位。
22.如权利要求21所述的计算机可读的存储介质，其中所述RS参数值是子小区标识符并且指示符用来使用所述DCI中的单个位来指示所述扰码身份。
23.如权利要求21所述的计算机可读的存储介质，其中所述指示将要指示UE-RS端口11或13。
24.如权利要求19所述的计算机可读的存储介质，其中将所述RS参数值的指示传输给所述UE装置的操作包括传输多位信道状态信息参考信号CSI-RS的操作。
25.如权利要求24所述的计算机可读的存储介质，其中由所述eNB使用来生成所述UE-RS的初始化值通过下列方程来确定：
其中是无线帧中的时隙号，是物理小区层身份，是扰码身份，并且是所述RS参数值。
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US9426689B2 (en) 2016-08-23
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US20140050086A1 (en) 2014-02-20
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EP2702736A1 (en) 2014-03-05
WO2012148442A1 (en) 2012-11-01
KR20150069032A (ko) 2015-06-22
US10034194B2 (en) 2018-07-24
US20140161004A1 (en) 2014-06-12
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EP3101829A1 (en) 2016-12-07
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US9526027B2 (en) 2016-12-20
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US20180324629A1 (en) 2018-11-08
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US20200382175A1 (en) 2020-12-03
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US20170289587A1 (en) 2017-10-05
US9445299B2 (en) 2016-09-13
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EP3291456A1 (en) 2018-03-07
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EP2702735B1 (en) 2023-07-19
CN103843408A (zh) 2014-06-04
US20150139079A1 (en) 2015-05-21
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US9998944B2 (en) 2018-06-12
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US10051509B2 (en) 2018-08-14
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US11411616B2 (en) 2022-08-09
US10785673B2 (en) 2020-09-22
WO2012148620A2 (en) 2012-11-01
CN103503327A (zh) 2014-01-08
EP2702735A1 (en) 2014-03-05
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ES2687453T3 (es) 2018-10-25
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US20130287139A1 (en) 2013-10-31
US10034195B2 (en) 2018-07-24
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EP2702735C0 (en) 2023-07-19
CN103503393A (zh) 2014-01-08
KR101904594B1 (ko) 2018-10-04
KR20160121605A (ko) 2016-10-19
US20140101726A1 (en) 2014-04-10
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US20160302135A1 (en) 2016-10-13
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US20130268986A1 (en) 2013-10-10
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US20150208274A1 (en) 2015-07-23
CN103814608A (zh) 2014-05-21
CN103782622A (zh) 2014-05-07
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US20140036669A1 (en) 2014-02-06
BR112013027378B1 (pt) 2021-10-05

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