CN104769870A - 无线干扰减轻 - Google Patents
无线干扰减轻 Download PDFInfo
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Abstract
实施方式涉及在第一用户设备(UE)内用于无线干扰减轻的装置。装置包括:至少一个信道估计器,用于估计与为第一UE指定的第一接收信号相关联的第一信道传递函数,以及用于估计与第二接收的干扰信号相关联的第二信道传递函数。符号估计器响应于该至少一个信道估计器处理至少第一接收信号以产生符号估计。响应于信道估计器的解调器解调符号估计以产生输出,所述输出表示为对应于符号估计的接收数据单元。解调器具有处理单元,所述处理单元配置成使用第一信道传递函数、第二信道传递函数以及用于至少第一接收信号的相应的调制方案来解调符号估计。
Description
相关申请的交叉引用
本申请要求2012年12月3日提交的、名为“ADVANCED WIRELESSCOMMUNICATIONS SYSTEMS AND TECHNIQUES”的美国临时专利申请号61/732,851的优先权,由此通过引用将其全部公开内容并入。
技术领域
实施方式涉及无线通信,并且更特别地,涉及无线通信中的干扰减轻。
背景技术
作为无线通信技术进程中的进步,期望通过部署异构网络以达到小区分裂增益和多用户多输入多输出(MU-MIMO)来提高LTE-A网络的容量。期望源自小区间或同时运行(co-scheduled)的小区内的用户的共信道干扰能够成为达到更高网络容量的因素。
知晓通过采用协作多点技术(CoMP)来例如为在发送基站处的在网络侧处实现干扰减轻。这些CoMP技术涉及协作的基站收发器,使得来自多个小区的基站收发器能够以减少的干扰来发信号到UE以及从UE接收信号。
但是,干扰可以在当UE经历例如源自到UE的小区间通信或到UE的同时运行的小区内通信的共信道干扰时在UE用户设备(UE)处发生;两者都能够限制性能。
附图说明
这里描述的实施方式通过示例的方式来在所附附图中图示,而没有限制:
图1A和B示出了干扰场景;
图2描述了用户设备(UE)的一部分;
图3图示了与干扰减轻相关联的操作的流图;
图4示出了用于解调数据的处理操作的流程图;
图5图示了UE的一部分;
图6描述了与干扰减轻相关联的处理操作的流图;
图7和8示出了UE;
图9示出了与干扰减轻相关联的处理操作的流图;
图10图示了在干扰减轻中使用的eNodeB;
图11至13描述了用于干扰减轻的流程图;
图14示出了第一与第二eNodeB之间的信令;以及
图15示出了第一eNodeB与第一UE之间的信令。
具体实施方式
图1示出了图示小区间干扰的视图100。第一eNode B(eNB)102经由第一信道106承载的相应的第一信号来与第一UE 104通信。提供了其中相应的第一信道为物理下行共享信道(PDSCH)106的实施方式。第二eNB 108经由相应的第二信道112承载的相应的第二信号来与第二UE 110通信。例如,相应的第二信道能够为PDSCH。
第一102和第二108eNB能够配置为通信控制信息到彼此。控制信息能够经由回程链路114来通信,该回程链路114直接连接它们或者经由诸如为例如网络实体(未示出)的中间体来连接它们。还示出了从第二eNB 108发出的干扰信道116,其同样被第一UE 104接收。
一般,在eNB使用两个发送天线来发射单个空间层到具有两个接收天线的UE的无线通信系统中,在给定资源元素(RE)上的第一eNB 102与第一UE 104之间的波束成形之后的作为信道的信道传递函数的等价信道能够表达为预期(intended)的信道传递函数 与波束成形矢量 的乘积,其给出
其中hij为UE的第i个接收天线与eNB的第j个发送天线之间的信道传递函数。
第二eNB 108与第一UE 104之间的干扰信道116的等价信道传递函数能够表达为干扰信道传递函数 与波束成形矢量 的乘积,其给出:
其中gij为UE的第i个接收天线与eNB的第j个发送天线之间的信道传递函数。
因此,由第一UE 104接收的信号r能够表达为:
r=H·w·s+G·v·t+n=h·s+g·t+n,
其中
- 为第一和第二接收天线上的接收信号的矢量;
-h为服务信道的等价信道;
-g为干扰信道的等价信道;
-s为服务信号;
-t为干扰信号;以及
- 为热噪声和来自其它源的残余干扰的矢量。
应该注意服务和干扰eNB上的单个空间流的接收信号模型仅仅为一个可能的传输示例。但是,示例在这方面不受限。示例能够实现,其中这里所描述的原理和过程能够扩展到具有由任意eNB发送的多于一个信号的其它传输场景。
在小区内干扰场景中,干扰信道116的干扰信号还将从第一eNB 102发出并且仍然由第一UE 104接收,即使与干扰信号相关联的传输预期用于第二UE 110。图1B示出了小区内干扰场景100B。第一eNB 102发送信号到第一104和第二110UE两者。传输包括为第一和第二UE 104和110指定的相应的信道106和112承载的相应的预期信号。能够意识到到第二UE110的传输还显示其自身为由第一UE 104接收的干扰信号117。在本示例中,第一eNB 102还是干扰eNB。将意识到第一eNB 102与第一UE 104之间的等价的预期信道将如上给出,即,
但是,第一eNB 102与第一UE 104之间的等价干扰信道将由以下给出:
参见图2,示出了第一UE 104的示意图200。第一UE 104包括用于接收一个或多于一个信号的RF前端202。所接收的一个信号或多个信号能够经由两个或更多个相应的天线来接收。所接收的信号从RF前端202传递到OFDM解调器203以及提供所接收的信号的估计的符号估计器204。实施方式提供符号估计器204提取所接收的信号的幅度和相位,所接收的信号即由UE接收的信号、或者、以另一方式来看为由相应的eNB发送的信号。提供解调器206以处理任意所接收的信号的所提取的幅度和相位以估计由所提取的幅度和相位信息表示的一个或多个比特的一个值或多个值,该一个值或多个值典型地输出为诸如例如为所接收的比特的所接收的数据单元208。解调器处理能够采取软判决估计器212采取的软判决的形式。软判决具有伴随的置信测量。
所接收的信号的相位和幅度不仅取决于发送信号的相位和幅度,还取决于等价信道传递函数,即,等价信道。因此,UE 104还包括信道估计器214。信道估计器214可操作以补偿由预期的等价信道传递函数h引入的相位变化。信道估计器214处理插入到为第一UE 104指定的由第一eNB 102发送的信号中的参考信号。参考信号对eNB 102和第一UE 104两者已知并且具有预定义的幅度和相位。第一UE 104的信道估计器214测量所接收的参考信号的幅度和相位中的至少一个并且将它们与期望的参考信号的已知版本相比较,以识别由预期的等价信道的传递函数引入的任何幅度和/或相位变化。任何识别出的幅度和/或相位变化能够接着用于调整由符号估计器204在对应于数据符号的资源元素上估计的符号的幅度和/或相位。实施方式提供了参考信号为与物理下行共享信道(PDSCH)相关联的UE-专用参考信号或小区专用参考信号(CRS),如能够从例如3GPP TS 36.211、v11.04.00、或v11.00.00第6.10.3节中得到。实施方式能够在参考信号配置为由UE 104在一个或多个所选择的天线端口上接收中实现。
参见图3,示出了信令300的示例。第一eNB 102在PDSCH信道,PSCHeNB1-UE1106上发射数据到第一UE 104。分配给第一UE1104的资源元素302还包含如上在第6.10.3中规定的UE-专用参考信号304的实施方式,以由第一UE 104在执行信道估计中使用。特别地,所选择的天线端口用于对应于UE-专用参考信号的资源元素。示例能够在天线端口p=7,8,…,v+6中实现,其中v为用于PDSCH的传输的层数。示例能够实现,其中UE-专用参考信号使用天线端口7来承载。
能够意识到第二eNB 108已经与第二UE 110建立通信信道112。PDSCH资源分配306由第二eNB 108发信号到第二UE 110。此信令还包含在执行信道估计中使用的用于第二UE 110的相应的UE-专用参考信号308。
假定第一UE 104正经历与其资源元素中的一个或多个相关联的干扰116并假定干扰源为与第二UE 110和第二eNB 108相关联的PDSCHeNB2-UE2112。可选地,第一UE 104经由信号310来上报干扰到第一eNB 102。第一eNB 102再次可选地将包含此干扰的指示的通知312转发到第二eNB 108。
第二eNB 108主动地或响应于以上通知来将与第二eNB 108与第二UE110之间的通信112相关联的干扰信号信息发送到第一eNB 102。此信息在以下描述,但是能够包括资源分配的指示,特别地,涉及如能够由信号314得到的与第二UE 110相关联的UE-专用参考信号308、以及用于通信112的资源元素的调制方案308’的指示。
在某些实施方式中,当干扰信号对应于基于CRS的传输模式时,除了调制方案308’之外,与干扰PDSCH相关联的波束成形信息v也由信号314来提供。波束成形信息包括预编码矩阵指示符(PMI)。
干扰信号信息为干扰减轻数据的实施方式,使用回程连接114或者以诸如例如由一个或多个网络中间体的某一其他方式来从第二eNB 108传递到第一eNB 102。能够意识到任何这样的指示能够包括例如对由PDCCH和EPDCCH中的每个中的资源分配域识别的对干扰UE做出的资源分配,其包括两个部分;即,资源分配头域和组成实际资源块分派的信息。资源分配具有三个格式。第一为资源分配类型0。在类型0的资源分配中,资源块分配信息包括指示分配给干扰UE的资源块组(RBG)的位图,其中RBG为虚拟资源块(VRB)的集合。用于的下行系统带宽的RBG的总数NRBG由给出,其中为P的大小并且如果则RBG中的一个的大小为位图大小为NRBG比特,其中每RBG一个位图,使得每个RBG可寻址。第二格式为资源分配类型1。在类型1的资源分配中,资源块分派信息包括三个域。第一域包括个比特以从P个RBG子集中指示所选择的RBG子集。第二域具有一个比特,指示子集内的资源分配跨度的偏移。比特值1指示偏移有效。第三域包括位图,其中每个比特以将位图的最重要到最不重要的比特以增加频率的顺序映射到VRB的方式来寻址所选择的RBG子集中的单个VRB。如果对应的比特值域为1,VRB分配给干扰UE,否则,VRB不分配给干扰UE。用于在所选择的RBG子集中寻址VRB的位图的部分具有大小并且定义为能够意识到还能够使用资源分配类型2数据。能够实现以任一其他方式来传递干扰UE的资源分配到受干扰UE的实施方式。
如能够从信号316中了解到,第一eNB 102转送PDSCH资源分配314到第一UE 104,特别地,转送作为干扰减轻数据而知晓的PDSCH资源分配和相关联的UE-专用参考信号、或者与此分配相关联的数据或者从此分配中衍生的数据。第一UE 104使用资源元素分配来提取与第二UE 110相关联的UE-专用参考信号。在318处,第一UE 104使用所提取的UE-专用参考信号来执行对干扰等价信道传递函数g的信道估计,并且用于在320处考虑预期的通信信道的等价传递函数和干扰通信信道的等价传递函数以及干扰自身来对未来接收的信号解调。
在某些实施方式中,当干扰信号对应于基于CRS的传输模式时,干扰小区CRS和所接收的干扰波束成形矢量v用于执行对干扰等价信道传递函数g的信道估计以及在320处的考虑预期的通信信道的等价传递函数和干扰通信信道的等价传递函数以及干扰自身而对未来接收的信号的解调。
以上描述的解调器206的示例为最大似然解调器。最大似然解调器或接收机一般搜索以找到最小化||r-hs-gt||2的接收信号估计的值s和t,其中||·||代表范数,诸如例如,弗罗贝尼乌斯(Frobenius)范数。以上解调器配置成执行两个信道传递函数估计;第一个为预期的信道h的传递函数,并且第二个为干扰信道的传递函数g。
图4示出了解调的流程图400。在步骤402处,为预期的通信信道h建立信道估计,以及,在步骤404处,为干扰通信信道g建立信道估计。
在步骤406处,给定由eNB 108用于到第二UE 110通信的(多个)调制方案,建立集合T∈{ti},其为可能的干扰信号候选ti的集合。
对于每个干扰信号候选ti,在步骤408处建立集合S,其为预期的或有用的信号候选的集合。信号为对应于从预期的或有用的信号候选的星座中选择的干扰信号候选ti的优化的有用信号,如下:
其中运算slice{}找到为预期的通信规定的调制星座中的最近的信号点,即,为由有用的信号使用而规定的。本质上,建立能够包括给定与每个ti相关联的调制方案而为每个可能的ti评价表达式(hhh)-1hh(r-g·ti),接着为每个可能的ti从集合S中找到距离由预期的或有用的信号使用的调制星座的星座点的最近的具有(hhh)-1hh(r-g·ti)的值的星座点;其中hh为矩阵h的共轭,并且上标“-1”代表矩阵求逆运算。
最大似然解调判决在步骤410处使用下面的条件来做出:
其中||·||代表范数,诸如,例如弗罗贝尼乌斯范数。
可以了解以上最大似然解调器为可能的解调器的示例。但是,其它示例能够使用不同的技术,诸如例如,最大后验概率估计(MAP)、球形译码、QR-最大似然(其中QR为QR分解)以及类似物的方法。
可以了解到PDSCH的调制星座能够为QPSK、16QAM以及64QAM中的一个或多个。规定的调制星座传递给UE 104,作为物理下行控制信道(PDCCH)的一部分,更特别地,作为下行控制信息(DCI)的一部分,其承载5比特的调制和编码方案以由PDSCH使用。在另一实施方式中,为了信令干扰信号的调制阶数,2个比特能够由PDCCH使用。这里描述的示例同等地应用于其它控制信道,诸如例如PDCCH和增加下行物理控制信道(EDPCCH)。
现在将参照图5和6来描述以上的进一步的示例。参见图5,示出了诸如为第一UE 104的UE 500的示意图。UE 500包括用于接收信号的RF前端502。所接收的信号能够经由与天线端口相关联的两个或更多个相应的天线来接收,天线端口诸如例如由第6.10.3节规定的那些,即,天线端口p=7,8,…,v+6。所接收的信号从RF前端传送到OFDM解调器503。ML符号估计器504提供所接收的信号的当前的符号的估计。提供解调器506以处理估计的信号以估计它们的值为由所提取的幅度和相位信息表示的一个或多个数据单元,诸如比特,该值典型地输出为接收的比特508。处理能够采取由软判决估计器512采取的软判决的形式。
由于以上记载的原因,UE 500还包括至少一个信道估计器。在本示例中,提供了两个信道估计器。提供第一信道估计器514以用于确定预期的通信信道等价传递函数h的估计。提供第二信道估计器514’以用于确定干扰信道等价传递函数g的估计。信道估计器514和514’可操作以估计由预期的等价信道传递函数h或干扰等价信道传递函数g引入的任何幅度和相位变化。
信道估计器514和514’处理插入到由第一eNB 102和第二eNB 108发送的信号中的已知的参考信号。在本示例中,在处理与另一UE相关联的UE-专用参考信号中,如上,接收UE假定预期的UE-专用参考信号和干扰UE-专用参考信号使用相同的加扰序列。在这一情况下,预期的UE-专用参考信号在天线端口的一个端口上发送,诸如例如端口7,并且将干扰参考信号视为从另一天线端口可获得的,诸如例如端口8,或者反之亦然。能够了解到之前的处理应用于小区间干扰、小区内干扰或小区间和小区内干扰两者。
参考信号对eNB 102和第一UE 104两者已知并且具有预定义的幅度和相位特性。信道估计器514和514’测量接收的UE-专用参考信号的幅度和相位的至少一个并且将它们与UE-专用参考信号的已知版本相比较,以识别由预期的以及干扰信道等价传递函数引入的幅度和/或相位变化。任何识别出的幅度和/或相位变化能够接着用于由ML符号估计器504的符号估计,该符号估计产生一对符号;有用符号和干扰符号;每个天线端口一个。实施方式提供了参考信号为与物理下行共享信道相关联的UE-专用参考信号,如能够从例如3GPP TS 36.211、v11.04.00或者v11.00.00、第6.10.3节处得到。
已经获得两个符号,如上所指示的,那些符号由解调器506来处理。
参见图6,示出了信令交互600的示例。第一eNB 102在PDSCH信道,PDSCHeNB1-UE1,106上发送数据到第一UE 104。PDSCH资源分配和分配给第一UE 104的资源元素602还包含如上在第6.10.3节中规定的UE-专用参考信号604的实施方式,以由第一UE 104在执行信道估计中使用。特别地,所选择的天线端口7和8用于对应于UE-专用参考信号的资源元素。
假定第一UE 104正经历干扰116。假定干扰源为与第二UE 110相关联的PDSCH并且具有相同的加扰序列的UE-专用参考信号在天线端口8上接收,如能够从例如以上TS 36.211的图6.10.3.2-3中得到。能够了解到第二eNB 108已经与第二UE 110建立PDSCH。PDSCH下行资源分配已经规定UE参考信号和使用的调制方案的指示。
第一UE 104使用天线端口7和8的资源元素分配来提取与第一UE 104和第二UE 110相关联的UE-专用参考信号。第一UE 104使用所提取的UE-专用参考信号来分别为服务和干扰信道等价传递函数h和g来执行信道估计,并且最终使用上述最大似然解调器以考虑预期的通信信道的等价传递函数和干扰通信信道的等价的传递函数以及干扰自身的方式解调所接收的信号。相关联的处理在图4中给出,并且参照图4来描述,即,以上解调器配置成确定两个等价传递函数估计;第一个为与端口7相关联的预期的信道的等价传递函数h,并且第二个为与端口8相关联的假定的干扰信道的等价传递函数g。因此,信号检测由以上解调器通过||r-hs-gt||2的极小值来执行。
当确定信道估计时,以上示例可以使用多个参数。例如,在第二eNB 108通信引起干扰或者与干扰相关联的资源元素的映射图案之处,下面的参数中的至少一个或多个能够通信:小区-专用参考信号(CRS)天线端口号、CRS频移、多媒体广播单频网络(MBSFN)子帧配置和PDSCH起始符号,以任何以及所有的组合联合和各自地采用。使用的其它参数能够为UE-专用参考信号的参数,诸如,物理小区ID、虚拟小区ID以及加扰序列nSCID,以任何以及所有的组合联合和各自地采用。能够使用回程链路114诸如例如经由X2-AP接口来将这些参数提供给第一eNB 102,并且由第一eNB 102使用高层(例如,RRC)或物理层信令(例如,PDCCH或EPDCCH)来发信号通知到第一UE 104。在进一步的示例中,对于基于CRS的传输模式,联合地和各自地采取的物理小区标识和传输预编码矩阵指示符(PMI)中的至少一个可以提供给第一UE 104以促进对应于(多个)干扰信号的信道估计。
图7图示了用于一个实施方式的示例系统700,包括一个或多个处理器710、系统存储器720、与(多个)处理器710中的至少一个处理器耦合的系统控制逻辑720、系统存储器720、非易失性存储器(NVM)/存贮器740、网络接口750和输入/输出设备760。系统700配置成实现以上和以下描述的处理。
(多个)处理器710可以包括一个或多个单核或多核处理器。(多个)处理器710可以包括通用处理器和/或专用处理器(例如,图形处理器、应用处理器、基带处理器等)的任意组合。处理器710可操作以使用合适的指令或程序(即,经由处理器或其它逻辑、指令的使用来操作)770来执行这里描述的信号处理。指令770可以存储在系统存储器720中,作为系统指令,或者额外地或可选地可以存储在(NVM)/存贮器740中,作为NVM指令780。
用于一个实施方式的系统控制逻辑730可以包括任何合适的接口控制器以提供到(多个)处理器710中的至少一个和/或到与系统控制逻辑730通信的任何合适的设备或组件的任何合适的接口。
用于一个实施方式的系统控制逻辑730可以包括一个或多个存储器控制器以提供到系统存储器720的接口。系统存储器720可以用于加载和存储用于系统700的数据和/或指令。用于一个实施方式的系统存储器720可以包括任何合适的易失存储器,诸如例如合适的动态随机访问存储器(DRAM)。
例如,NVM/存贮器740可以包括用于存储数据和/或指令的一个或多个有形的、非瞬时的计算机可读介质。NVM/存贮器740可以包括任何合适的非易失存储器,诸如例如闪存,和/或可以包括任何合适的(多个)非易失存贮器设备,诸如例如一个或多个硬盘驱动((多个)HDD)、一个或多个压光盘(CD)驱动、和/或一个或多个数字通用盘(DVD)驱动。
NVM/存贮器740可以包括物理地作为设备的一部分的存贮器资源,在该存贮器资源上安装系统700,或者其可以由设备而不一定为设备的一部分来访问。例如,NVM/存贮器740可以在网络上经由网络接口790来访问。
系统存储器720和NVM/存贮器740可以分别包括,特别地,例如指令770和780的临时和静态的副本。指令770和780可以包括指令,当由(多个)处理器710中的至少一个执行时得到实现这里所述的流图、方法、示例或实施方式中的一个或多个的系统700。在某些实施方式中,指令770和780、或者硬件、固件、和/或其软件组件可以额外地/可选地位于系统控制逻辑720、网络接口750、和/或(多个)处理器710中。
网络接口750可以具有收发机模块790以提供用于系统700的无线电接口以在一个或多个网络(例如,无线通信网络)上通信和/或与任一其它合适的设备通信。收发机模块790可以实现执行所接收的信号的上述处理以实现干扰减轻的接收机模块。在各种实施方式中,收发机模块790可以与系统700的其它组件集成。例如,收发机模块790可以包括(多个)处理器710中的处理器、系统存储器720中的存储器、以及NVM/存贮器740中的NVM/存贮器。网络接口750可以包括任何合适的硬件和/或固件。网络接口750可操作地耦合到多个天线(未示出)以提供多输入、多输出无线电接口。用于一个实施方式的网络接口750可以包括例如网络适配器、无线网络适配器、电话调制解调器、和/或无线调制解调器。
对于一个实施方式,(多个)处理器710中的至少一个可以与系统控制逻辑730的一个或多个控制器的逻辑一起封装。对于一个实施方式,(多个)处理器710中的至少一个可以与用于系统控制逻辑730的一个或多个控制器的逻辑一起封装以形成系统级封装(SiP)。对于一个实施方式,(多个)处理器710中的至少一个可以集成在与用于系统控制逻辑730的一个或多个控制器的逻辑相同的晶粒上,以形成片上系统(SoC)。
在各种实施方式中,I/O设备760可以包括设计以使用户能够与系统700交互的用户接口,设计以使外围组件能够与系统700交互的外围组件接口,和/或设计以确定与系统700相关的环境条件和/或位置信息的传感器。图8示出了其中系统700用于移动设备800的形式实现UE的实施方式。
在各种实施方式中,用户接口能够包括但不限于显示器802(例如,液晶显示器、触摸屏显示器等)、扬声器804、麦克风806、一个或多个摄像头808(例如,静止摄像头和/或视频摄像头)、闪光灯(例如,发光二极管闪光灯)、以及键盘810中的至少一个或多个,这些能够以任意和所有的置换来联合以及各自采用。
在各种实施方式中,外围组件接口可以包括但不限于非易失存储器端口、音频插孔、以及电源接口。
在各种实施方式中,外围组件接口可以包括但不限于陀螺仪传感器、加速计、近距离传感器、环境光传感器、以及定位单元。定位单元还可以为网络接口450的一部分或者与网络接口450交互,以与例如为全球定位系统(GPS)卫星的定位网络的组件通信。
在各种实施方式中,系统700可以为移动计算设备,诸如但不限于膝上型计算设备、平板计算设备、上网本、移动电话等。在各种实施方式中,系统700可以具有更多或更少的组件、和/或不同的架构。额外地,移动设备800可以包括以下中的至少一个或多个:用于接收额外的存储器(未示出)的存储器端口812、图形处理器814以及应用处理器816,这些能够以任意和所有的置换来联合以及各自采用。移动设备能够包括一个或多于一个天线818。
参见图9,示出了小区内干扰场景900,其中eNB 102与两个UE通信;即,第一UE 104和第二UE 110。eNB 102分配相应的资源902和904给第一104和第二110UE。为了促进正确的符号估计和解调,相关联的下行控制数据具有用于每个UE 104和110的规定的参考信号906和908。参考信号能够为UE-专用参考信号。
能够意识到假定到第二UE 110的eNB 102传输经由干扰信号910来干扰第一UE 104。通过在信号914中提供与此干扰相关联的数据912给eNB,第一UE 104可以可选地向eNB 102通知干扰。数据能够采取经历干扰的资源元素上的(多个)干扰水平的形式。eNB 102处理与干扰相关的所接收的数据,并且确定其自身的传输中的一个传输是否引起问题或者干扰是否源自另一eNB或UE。本示例中的eNB 102将确定干扰源为与第二用户设备110的通信112。eNB 102响应所接收的数据912,并且随后通过发送数据916来处理IMD以用于改善对第一UE 104的干扰。以上指示了数据的示例。在本示例中,数据916包括UE-专用参考信号918和调制方案918’的指示。第一UE 102接收数据916并且在920处估计两个信道的传递函数h和g,并且在922处使用那些估计来解调对第一UE 104指定的(多个)所接收的信号106。
在这里所述的示例中,就到遭遇干扰的UE的数据的信令以用于在估计干扰信道中使用而言,诸如例如,与干扰小区相关联的下行控制信道信息,此数据能够包括以任意和所有的组合来联合以及各自采用的以下参数中的至少一个或多个:
1.干扰小区的物理小区ID,例如,物理小区ID=0…503。这用于获得干扰eNB的唯一的小区专用干扰信号。
2.干扰小区的CRS天线号,例如端口=0,1,2,4。这一信息用于来自一个或多个干扰eNB的信道的信道估计和/或用于取得一个或多个PDSCH资源元素映射图案。
3.码本的预编码矩阵指示符(PMI),用于与来自干扰eNB的干扰相关联的信道估计。
4.对应于干扰信号的调制信息。
5.对应于干扰信号的资源分配信息。
6.干扰小区的PDSCH起始符号,例如,L=0,1,2,3,4。对于多播/广播单频网络(MBSFN)子帧,PDSCH起始符号能够为min(2,L)。可选地,干扰小区的PDSCH起始符号能够通过邻居小区PCFICH的解码来确定。起始符号提供其中对应于PDCCH区域的子帧的部分与对应于PDSCH区域的子帧的部分之间的划分的指示。这一信息用于来自一个或多个干扰eNB的信道的信道估计和/或用于取得一个或多个PDSCH资源元素映射图案。
7.干扰小区的控制格式指示(CFI)值(来自PDCCH区域),L=0,1,2,3,4。对于多播/广播单频网络子帧,能够为min(2,L)。CFI从PCFICH中获得并且根据子帧中的OFDM符号的数量来指示控制区域的瞬时大小。因而,CFI间接指示子帧中的数据区域起始于何处。这本质上给出了与以上的清单项3中的PDSCH起始符号相同的信息,但是经由不同的路由。
8.干扰小区的组播/广播单频网络子帧配置,其用于取得对应于至少一个干扰小区的一个或多个PDSCH资源元素映射图案。
9.与干扰小区相关联的UE-专用参考信号的虚拟小区ID和nSCID,诸如例如虚拟小区ID=0…503。这用于获得对应于干扰eNB的UE-专用参考信号。
这些参数能够使用例如回程链路,诸如例如X2接口,来提供给第一eNB 102,并且由第一eNB 102使用诸如例如为无线资源控制(RRC)协议的高层信令或诸如例如为PDCCH或EPDCCH的物理层信令来信号到第一UE 104,其信令参照图14来描述。RRC例如在TS 36.311、Evolved UniversalRadio Access Network(E-UTRA)、Radio Resource Control(RRC)、协议规范,版本10或更高中描述。
参见图10,示出了诸如例如为第一102和第二108eNB的eNB的实施方式1000。eNB包括无线传输块1002,用于与诸如例如为上述的第一和第二UE的UE无线通信。传输块1002具有相关联的天线1002’并且优选地具有多个用于MIMO操作的天线。提供网络传输块1004,其支持诸如例如为与诸如为第二eNB的其它eNB或任一其它的网络实体的回程通信的网络通信。因此,eNB 1000能够包括网络连接1005,诸如例如上述的回程链路。提供处理器1006以用于控制eNB 1000的整体操作。处理器1006能够包括多个处理器、和/或一个或多个多核处理器。处理器1006按照存储在处理器可读、或者处理器可访问的存储器和存贮器1010内的软件1008来操作。软件1008被配置为,使得eNB 1000能够实现这里描述的示例,并且,特别地,能够实现这里描述的流程图和流程图表的各个eNB方面。
参见图11,示出了由eNB 1000执行的操作的流程图1100。操作能够用于小区间干扰减轻。在1102处,eNB 102发送或输出PDSCH到第一UE104。在1104处,eNB 102从第一UE 104接收干扰的通知。eNB 102确定干扰源并且在1106处为了与干扰相关联的(多个)下行参数信息而发射网络消息给为干扰负责的实体,即,本示例中的第二eNB 108,该(多个)下行参数信息在本示例中为PDSCH和发送到第二UE 110的UE-特定或CRS参数。能够了解到(多个)下行参数信息为IMD的实施方式。
在1108处,eNB 102从第二eNB 108接收用于至少减轻干扰的所请求的(多个)下行参数信息。第一eNB 1110发送干扰减轻数据到第一UE 104以在减轻干扰中使用,干扰减轻数据诸如例如从(多个)下行参数信息中取得的数据或者与(多个)下行参数信息相关联的数据。示例能够实现,其中参数能够使用诸如例如为RRC信令的高层信令或者诸如例如为PDCCH或EPDCCH信令的物理层信令来由第一eNB 102提供给第一UE104。
图12示出了由eNB 1000执行的操作的流程图1200。操作能够用于小区间干扰减轻。诸如例如为第二eNB 108的eNB 1000在1202处接收对诸如例如为(多个)下行参数信息的与由eNB 1000发送的信道相关的IMD的请求,该信道诸如例如为发送到诸如例如为第二UE 110的相应的UE的当前的PDSCH。eNB 1000通过发射消息到诸如例如为第一eNB 102的请求网络实体来响应请求,该消息包含与(多个)下行参数相关联的数据,即,IMD。
图13描述了由eNB 1000执行的处理操作的流程图1300。操作能够用于小区内干扰减轻。eNB 1000能够例如为上述第一102和第二108eNB中的至少一个。在1302处,eNB 1000在至少两个信道上发送,诸如例如为相应的UE指定的两个PDSCH。相应的UE能够为例如上述的第一UE 104和上述的第二110UE。在1304处,eNB 1000从UE 104和110中的一个中接收包含干扰的指示的通知,诸如例如,从第一UE 104。在1306处,eNB 1000确定干扰源。eNB 1000发送干扰减轻数据,诸如例如与(多个)下行参数信息相关联或者从中取得、与经历干扰的UE的干扰源相关联的数据,以在如以上示例中的任意示例中所述的干扰减轻中使用。
干扰减轻数据的实施方式包括与以下中的至少一个相关联或从中取得的数据:小区-专用参考信号和与干扰信号相关联的UE-专用参考信号、小区标识、对应的发送机的多个小区-专用参考信号天线端口以及小区-专用参考信号偏移、PDSCH起始符号、干扰小区的MBSFN子帧配置;以及干扰小区EPDCCH集合分配,这些以任意以及全部置换来联合以及各自地采用。这些参数能够由第一eNB 102使用诸如例如为RRC的高层或者诸如例如为PDCCH或EPDCCH的物理层信令来提供给第一UE 104,其信令在此后描述。
图14为更具体地示出第一eNB 102与第二eNB 104之间的信令以用于通信与第一eNB 104经历的干扰相关联的干扰减轻数据的流程图1400。
在1402处,第一eNB 102发信号到第二eNB 108,通知诸如为第一UE 104的相应的UE正经历与以下中的至少一个相关联的干扰:第二eNB102或者由第二eNB 108服务的UE,例如第二UE 110。信号能够使用预定协议作为消息1404而传递。示例能够在消息1404中实现。进而,预定协议能够为X2AP协议,如例如在3GPP TS 36.423(2011年9月)、EvolvedUniversal Terrestrial Radio Access Network(E-UTRAN)、X2 ApplicationProtocol(X2AP)、版本10或更高中规定的X2AP协议。尽管本示例示出消息1414响应于干扰1404的通知而从第二eNB 108发送到第一eNB 102,示例不限于这样的安排。
示例能够实现,其中,消息1414主动地分发或者否则使得第二eNB 108可获取以促进干扰减轻。
消息1404包含与正经历的干扰相关的干扰数据1406。干扰数据1406能够采用请求与第二eNB 108和第二UE 110中的至少一个相关联的数据的信元(IE)的形式。所请求的IE能够例如与至少第一UE 104经历的UL或DL干扰相关。额外地,或可选地,干扰数据1406能够请求IE,诸如例如为与至少第二UE 110的所分配的无线资源相关的无线资源状态、或者其它信息。
在1408处,消息1404由第二eNB 108接收。第二eNB 108在1410处处理所接收的干扰数据1406以确定干扰源以及以收集相应的干扰减轻数据(IMD)。在1412处,第二eNB 108即响应eNB 108,通过发射IMD到请求eNB 102来响应请求eNB 102。再次,示例能够实现,其中响应以消息1414的形式发射。消息1414能够为RRC消息。诸如例如为X2AP协议的规定的协议能够用于传递消息1414。能够意识到消息1414包含IMD 1416。干扰减轻数据能够采用信元的形式。信元能够与至少第二UE 110的所分配的无线资源相关。示例能够实现,其中IMD包括无线资源状态IE。
通过请求eNB 102来在1418处接收消息1414以用于后续处理,诸如例如从IMD中提取相关数据并且转发或从IMD中取得的数据到经历干扰的UE。
已经参照X2AP协议描述了以上信令和消息交换。但是,示例不限于此协议。示例能够实现,其中使用不同的协议来替代。
图15为更具体地示出由于所确定的干扰而请求IMD或通信对IMD的需求的第一UE 104与第一eNB 102之间的信令的流图1500。
在1502处,第一UE 104确定其遭遇干扰。
第一UE eNB 102在1504处发信号到第一eNB 102以指示其在经历干扰。干扰能够与第二eNB 102或诸如例如为第二UE 110的第二eNB 108服务的UE中的至少一个相关联。信号能够使用预定协议作为消息1506来传递。示例能够实现,其中消息1506为RRC消息。进而,预定协议能够为X2AP协议,如在例如3GPP TS 36.423、2011年9月、Evolved UniversalTerrestrial Radio Access Network(E-UTRAN)、X2 Application Protocol(X2AP)、版本10或更高中规定的。消息1506包含与正经历的干扰相关的干扰数据1508。
在1510处由第一eNB 102接收消息1506。第一eNB 102在1512处处理所接收的消息1506以确定干扰源以及以收集相应的干扰减轻数据(IMD)。在1514处,第一eNB 102通过发射消息1516到请求的eNB 102来响应请求的UE 104。再次,示例能够实现,其中消息1516能够为RRC消息。消息1516包含干扰减轻数据1518。
在1520处消息1516由第一UE 104接收以用于后续处理,诸如例如,如在以上干扰减轻的示例中的任意示例中所指示的,从IMD中提取相关的数据以及减轻干扰。
可以了解到以上描述的(多个)下行参数、(多个)下行参数信息能够为干扰减轻数据的实施方式。
可以了解到本发明的实施方式能够以硬件、软件或硬件和软件的组合的形式来实现。任何这样的软件可以以易失或非易失性存贮器的形式来存储,诸如例如,如为ROM的存贮器设备,可擦写或者可重写或者不可重写,或者以存储器的形式来存储,诸如例如RAM、存储器芯片、设备或集成电路或机器可读存贮器,诸如例如,DVD、记忆棒或固态媒介。将意识到存贮器设备和存贮器介质为适于存储一个程序或多个程序的非瞬时机器可读存贮器的实施方式,该一个程序或多个程序包括指令,当执行时实现这里描述的和要求保护的实施方式。对应地,实施方式提供机器可执行代码,用于实现如这里所述的或如这里要求保护的系统、设备或方法,以及存储这样的程序的机器可读存贮器。仍旧进一步,这样的程序可以经由诸如为有线或无线连接上承载的通信信号的任何媒介以及适合包括其的实施方式来进行电传输。
任何这样的硬件能够采用合适的可编程的处理器的形式,诸如例如,设计用于移动设备的可编程的通用处理器,作为FPGA、或ASIC,其一起构成配置为或可配置为执行以上示例和实施方式的功能的处理电路的实施方式。任何这样的硬件还能够采用配置成根据以上所述的框图中的任何一个或多个来操作的芯片或芯片集,这样的框图以及相关联的描述以任何以及所有的置换来联合或各自地采用。
尽管已经单独地关于它们的所附的附图描述了以上示例和实施方式,但是实施方式不限于此。实施方式能够实现,其中与图相关联的实施方式或示例能够以任何以及所有的置换来联合以及各自地采用。例如,图1的特征、和/或图1的描述的特征,能够与图2的特征或图2的描述的特征等等一起采用。
其中示例或实施方式的变形已经给出,作为枚举的列表的至少成员,附加或不附加语言“以任何以及所有的置换来联合地或各自地采用”,清楚这样的枚举列表的所有的置换是可预期的,其仅仅通过附加语言“以任何以及所有的置换来联合地或各自地采用”来更加强调。
实施方式能够根据下面的条款来实现:
条款1.一种在第一用户设备(UE)内用于减轻无线干扰的装置,所述装置包括:
至少一个信道估计器,其用于估计与为所述第一UE指定的第一接收信号相关联的第一信道传递函数,以及用于估计与第二接收干扰信号相关联的第二信道传递函数;
至少一个符号估计器,其响应于所述至少一个信道估计器,处理至少第一接收信号以产生符号估计;以及
解调器,其响应于所述信道估计器,操作为解调所述符号估计以输出,所述输出表示为对应于所述符号估计的接收数据单元,所述解调器包括处理单元,所述处理单元配置成使用第一信道传递函数和第二信道传递函数来解调所述符号估计。
条款2.如条款1的装置,其中所述处理元件操作为使用估值计算来计算所述接收数据单元。
条款3.如条款2的装置,其中估值计算为最大似然估值计算。
条款4.如任意前述条款的装置,其中至少一个信道估计器响应于下行控制信息,所述下行控制信息包括与所述第一和第二接收信号中的至少一个相关联的参考信号。
条款5.如条款4的装置,其中参考信号包括与所述第一和第二接收信号中的至少一个相关联的UE-专用参考信号。
条款6.如条款4和5中任一项的装置,其中下行控制信息与所述第一接收信号相关联。
条款7.如条款4至6中任一项的装置,其中所述下行控制信息与所述第二接收信号相关联。
条款8.如条款4至7中任一项的装置,其中所述下行控制信息包括UE-专用参考信号参数中的至少一个。
条款9.如条款8的装置,其中所述UE-专用参考信号参数包括UE-专用RS的虚拟小区标识、加扰序列索引(nSCID)和UE-专用天线端口中的至少一个。
条款10.如条款4至9中任一项的装置,其中所述下行控制信息包括至少一个CRS参数。
条款11.如条款10的装置,其中所述至少一个CRS参数包括物理小区标识、小区-专用参考信号(CRS)天线端口号、以及多媒体广播单频网络(MBSFN)子帧配置中的至少一个。
条款12.如条款4至11中任一项的装置,其中所述下行控制信息包括至少一个PDSCH资源元素映射参数。
条款13.如条款12的装置,其中所述至少一个PDSCH资源元素映射参数包括物理小区标识、小区-专用参考信号(CRS)天线端口号、CRS频率偏移、多媒体广播单频网络(MBSFN)子帧配置、以及PDSCH起始符号和PDSCH资源分配中的至少一个。
条款14.如任意前述条款的装置,其中所述至少一个符号估计器包括符号处理器,所述符号处理器配置成产生信号候选的集合,定义为其中h为用于服务信道的给定资源元素上的所述信道传递函数,g为用于服务信道的给定资源元素上的所述信道传递函数,r为接收信号,ti为所有可能的干扰信号候选的集合T的元素并且上标h表示共轭转置以及上标-1表示矩阵求逆。
条款15.如条款14的装置,其中在产生表示所述接收数据单元的输出的过程中,解调器处理单元求的值。
条款16.一种用于减轻无线干扰的eNB,所述eNB包括:
输入模块,用于接收与不由eNB服务的UE相关联的下行数据,所述下行数据指定与UE的信道相关联的下行参数;
输出模块,用于输出干扰减轻数据,该干扰减轻数据与用于传输到由eNB服务的UE设备的所述下行数据相关联,所述UE已经历与所述信道相关联的干扰。
条款17.一种用于无线干扰减轻的eNB,所述eNB包括:
输入模块,其用于接收由所述eNB服务的UE经历的干扰指示;
处理器,其用于使用所述干扰指示来确定干扰源;
输出模块,用于发送下行数据请求,所述下行数据请求与和信道相关联UE相关联,所述信道为干扰源。
条款18.如条款16和17中任一项的eNB,其中所述下行数据和干扰减轻数据中的至少一个包括与以下中的至少一个相关联的数据:小区-专用参考信号、PDSCH资源元素映射和与所述干扰信号相关联的UE-专用参考信号。
条款19.如条款18的eNB,其中与干扰信号相关联的UE-专用参考信号包括UE-专用RS的虚拟小区标识、加扰序列索引(nSCID)和UE-专用天线端口中的至少一个。
条款20.如条款17或18中任一项的eNB,其中下行数据包括至少一个CRS参数。
条款21.如条款20的eNB,其中该至少一个CRS参数包括物理小区标识、小区-专用参考信号(CRS)天线端口号、以及多媒体广播单频网络(MBSFN)子帧配置中的至少一个。
条款22.如条款17的eNB,其中下行控制信息包括至少一个PDSCH资源元素映射参数。
条款23.如条款22的eNB,其中该至少一个PDSCH资源元素映射参数包括物理小区标识、小区-专用参考信号(CRS)天线端口号、CRS频率偏移、多媒体广播单频网络(MBSFN)子帧配置、以及PDSCH起始符号和PDSCH资源分配中的至少一个。
条款24.一种无线干扰减轻的方法;方法包括:
接收分配给受干扰的UE的与干扰UE相关联的资源分配数据;
处理干扰UE的参考信号以取得干扰信道数据,所述干扰UE的参考信号从接收的资源分配数据中识别;
处理受干扰的UE的参考信号以取得预期的信道数据;
通过使用干扰信道数据和预期的信道数据来解调对受干扰的UE所指定的接收信号,减轻来自干扰UE的干扰。
条款25.一种无线干扰减轻的方法;所述方法包括:
经由第一天线端口接收与UE相关的资源分配数据;
处理指定给所述UE的参考信号,从接收的所述资源分配数据确定所述参考信号并得到干扰信道数据;
经由第二天线端口接收与所述UE相关联的进一步的资源分配数据;
处理指定给所述UE的参考信号,从接收的资源分配数据确定所述参考信号并得到预期的信道数据;
通过使用所述干扰信道数据和所述预期的信道数据来解调为所述UE指定的接收信号来减轻在所述UE处的干扰。
条款26.如条款24和25中的任一项的方法,其中干扰信道数据包括与干扰信道相关联的传递函数。
条款27.如条款24至26中的任一项的方法,其中预期的信道数据包括与预期的信道相关联的传递函数。
条款28.一种用于干扰减轻信令的eNB,eNB包括:
处理器,配置成处理与从UE接收的消息相关联的干扰数据;消息包含UE遭遇干扰的指示;
处理进一步配置成确定干扰减轻数据并且产生用于通信到UE的与干扰减轻数据相关的消息。
条款29.如条款28的eNB,其中消息与无线资源控制协议相关联。
条款30.一种用于干扰减轻信令的eNB,eNB包括:
处理器,响应于已经处理的与从UE接收的消息相关联的干扰数据;消息包含UE遭遇干扰的指示,以产生从进一步的eNB请求干扰减轻数据的消息;
所述处理器进一步配置成处理从所述进一步的eNB接收的干扰减轻数据以产生用于通信到所述UE的与所述干扰减轻数据相关的消息。
条款31.一种用于干扰减轻信令的eNB,eNB包括:
处理器,配置成产生干扰减轻数据以在减轻干扰中使用,处理器进一步配置成影响与干扰减轻数据相关的消息传输到进一步的eNB。
条款32.一种用于干扰减轻信令的eNB,eNB包括处理器,配置成接收干扰减轻数据以在减轻干扰中使用;干扰减轻数据与进一步的eNB相关联。
条款33.如条款30至32中任一项的eNB,其中消息与X2应用协议相关联。
条款34.一种非瞬时机器可读存贮器,存储配置成使得当由处理器执行时实现如任意前述权利要求要求保护的方法、装置、UE或eNB的程序指令。
条款35.一种基本上如这里参照所附附图中的任一个或多个来描述的和/或如所附附图中的任一个或多个中所图示的装置、UE、方法、eNB。
条款36.一种装置,包括模块以实现如任意前述方法权利要求中要求保护的方法。
Claims (25)
1.一种在第一用户设备(UE)内用于减轻无线干扰的装置,所述装置包括:
至少一个信道估计器,其用于估计与为所述第一UE指定的第一接收信号相关联的第一信道传递函数,以及用于估计与第二接收干扰信号相关联的第二信道传递函数;
至少一个符号估计器,其响应于所述至少一个信道估计器,处理至少第一接收信号以产生符号估计;以及
解调器,其响应于所述信道估计器,操作为解调所述符号估计以输出,所述输出表示为对应于所述符号估计的接收数据单元,所述解调器包括处理单元,所述处理单元配置成使用第一信道传递函数和第二信道传递函数来解调所述符号估计。
2.如权利要求1所述的装置,其中所述处理元件操作为使用估值计算来计算所述接收数据单元。
3.如权利要求2所述的装置,其中估值计算为最大似然估值计算。
4.如权利要求1所述的装置,其中至少一个信道估计器响应于下行控制信息,所述下行控制信息包括与所述第一和第二接收信号中的至少一个相关联的参考信号。
5.如权利要求4所述的装置,其中参考信号包括与所述第一和第二接收信号中的至少一个相关联的UE-专用参考信号。
6.如权利要求4所述的装置,其中下行控制信息与所述第一接收信号相关联。
7.如权利要求4所述的装置,其中所述下行控制信息与所述第二接收信号相关联。
8.如权利要求4至7中任一项中所述的装置,其中所述下行控制信息包括UE-专用参考信号参数中的至少一个。
9.如权利要求8所述的装置,其中所述UE-专用参考信号参数包括UE-专用RS的虚拟小区标识、加扰序列索引(nSCID)和UE-专用天线端口中的至少一个。
10.如权利要求4所述的装置,其中所述下行控制信息包括至少一个CRS参数。
11.如权利要求10所述的装置,其中所述至少一个CRS参数包括物理小区标识、小区-专用参考信号(CRS)天线端口号、以及多媒体广播单频网络(MBSFN)子帧配置中的至少一个。
12.如权利要求4所述的装置,其中所述下行控制信息包括至少一个PDSCH资源元素映射参数。
13.如权利要求12所述的装置,其中所述至少一个PDSCH资源元素映射参数包括物理小区标识、小区-专用参考信号(CRS)天线端口号、CRS频率偏移、多媒体广播单频网络(MBSFN)子帧配置、以及PDSCH起始符号和PDSCH资源分配中的至少一个。
14.如权利要求1所述的装置,其中所述至少一个符号估计器包括符号处理器,所述符号处理器配置成产生信号候选的集合,定义为 其中h为用于服务信道的给定资源元素上的所述信道传递函数,g为用于服务信道的给定资源元素上的所述信道传递函数,r为接收信号,ti为所有可能的干扰信号候选的集合T的元素并且上标h表示共轭转置以及上标-1表示矩阵求逆。
15.如权利要求14所述的装置,其中,
在产生表示所述接收数据单元的输出的过程中,解调器处理单元求 的值。
16.一种用于减轻无线干扰的eNB,所述eNB包括:
输入模块,用于接收与不由eNB服务的UE相关联的下行数据,所述下行数据指定与UE的信道相关联的下行参数;
输出模块,用于输出干扰减轻数据,该干扰减轻数据与用于传输到由eNB服务的UE设备的所述下行数据相关联,所述UE已经历与所述信道相关联的干扰。
17.一种用于无线干扰减轻的eNB,所述eNB包括:
输入模块,其用于接收由所述eNB服务的UE经历的干扰指示;
处理器,其用于使用所述干扰指示来确定干扰源;
输出模块,用于发送下行数据请求,所述下行数据请求与和信道相关联UE相关联,所述信道为干扰源。
18.如权利要求16和17中任一项所述的eNB,其中所述下行数据和干扰减轻数据中的至少一个包括与以下中的至少一个相关联的数据:小区-专用参考信号、PDSCH资源元素映射和与所述干扰信号相关联的UE-专用参考信号。
19.如权利要求18所述的eNB,其中与干扰信号相关联的UE-专用参考信号包括UE-专用RS的虚拟小区标识、加扰序列索引(nSCID)和UE-专用天线端口中的至少一个。
20.一种用于干扰减轻信令的eNB,eNB包括:
处理器,配置成处理与从UE接收的消息相关联的干扰数据;所述消息包含UE遭遇干扰的指示;
所述处理进一步配置成确定干扰减轻数据并且产生用于通信到所述UE的与所述干扰减轻数据相关的消息。
21.如权利要求20所述的eNB,其中所述消息与无线资源控制协议相关联。
22.一种用于干扰减轻信令的eNB,所述eNB包括:
处理器,响应于已经处理的与从UE接收的消息相关联的干扰数据;消息包含UE遭遇干扰的指示,以产生从进一步的eNB请求干扰减轻数据的消息;
所述处理器进一步配置成处理从所述进一步的eNB接收的干扰减轻数据以产生用于通信到所述UE的与所述干扰减轻数据相关的消息。
23.一种用于干扰减轻信令的eNB,所述eNB包括:
处理器,配置成产生在减轻干扰中使用的干扰减轻数据,所述处理器进一步配置成改变与干扰减轻数据相关的消息到进一步的eNB的传输。
24.一种用于干扰减轻信令的eNB,所述eNB包括处理器,配置成接收在减轻干扰中使用的干扰减轻数据,所述干扰减轻数据与进一步的eNB相关联。
25.如权利要求30至32中任一项所述的eNB,其中消息与X2应用协议相关联。
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US11381360B2 (en) | 2016-11-04 | 2022-07-05 | Telefonaktiebolaget Lm Ericsson (Publ) | PT-RS configuration depending on scheduling parameters |
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CN108233959B (zh) * | 2018-01-05 | 2021-02-26 | 浙江集速合芯科技有限公司 | 一种消除数字相控阵子阵间干扰的方法 |
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