CN104704767A - 用于信道状态信息(csi)反馈的增强型干扰测量的方法 - Google Patents

用于信道状态信息(csi)反馈的增强型干扰测量的方法 Download PDF

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Publication number
CN104704767A
CN104704767A CN201380045150.8A CN201380045150A CN104704767A CN 104704767 A CN104704767 A CN 104704767A CN 201380045150 A CN201380045150 A CN 201380045150A CN 104704767 A CN104704767 A CN 104704767A
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csi
subframe
serving cell
resource
subframes
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CN104704767B (zh
Inventor
A·达维多夫
G·莫罗佐夫
韩承希
D·查特吉
I·博洛京
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Apple Inc
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Intel Corp
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Abstract

本文概括地描述了提供用于CSI反馈的增强型干扰测量的实施例。在一些实施例中,由UE使用CSI-IM资源来执行干扰测量。服务小区确定用于改变所确定的CSI-IM资源在向所述被服务的UE发送的子帧中的位置的跳变模式。向所述被服务的UE发送所确定的CSI-IM资源和所确定的CSI-IM资源跳变模式。服务节点发送零功率(ZP)CSI-RS。服务节点基于从服务小区向所述被服务的UE提供的CSI-IM和ZP CSI-RS,来从所述被服务的UE接收干扰测量。通过所确定的CSI-IM资源跳变模式,使服务节点的CSI-IM与非服务节点的CSI-IM之间的冲突最小化。

Description

用于信道状态信息(CSI)反馈的增强型干扰测量的方法
相关申请的交叉引用
本申请要求享受于2013年9月16日递交的美国专利申请序列号No.14/027,401的优先权权益,并且要求享受于2012年9月28日递交的美国临时专利申请序列号No.61/707,784的优先权权益,故以引用方式将上述申请的全部内容并入本文。
背景技术
已经提出了协作多点(CoMP)发送/接收作为用于通过特别是提高小区边缘UE的性能来满足3GPP(第三代合作伙伴计划)改进的LTE(LTE-A)要求的一种有前景的技术。在CoMP操作中,多个发送/接收点(通常是地理上分离的,但也可以是共置的)协同地向一个或多个用户设备(UE)进行发送,或者从一个或多个用户设备进行接收以便提高性能,尤其是小区边缘UE的性能。在下行链路CoMP的情况下,每个发送点(其可以具有一个或多个发射天线)是其信号覆盖地理区域的无线单元。概括地说,CoMP技术是指包括干扰避免的多种协调机制。CoMP可以用于提高小区边缘UE的吞吐量以及小区平均吞吐量。
在LTE中,对于诸如信道质量指示符之类的CSI参数,UE可以使用CRS来测量无线信道的属性。终端还可以使用CSI参考信号(CSI-RS)来获取信道状态信息。CSI-RS具有显著较低的时间/频率密度,因此与CRS相比暗示着更低的开销。在CoMP系统中,用于CSI反馈的信道测量是基于CSI-RS的。
出于CSI反馈的目的,可以在从接收的信号中减去信道信息之后基于CRS来测量干扰,或者直接基于由网络指示的信道状态信息干扰测量资源(CSI-IM)来测量干扰。在CoMP系统中,由于CSI-IM在支持针对不同干扰场景的测量中的灵活性,用于CSI的干扰测量是基于CSI-IM的。然而,在一些情况下,与干扰测量小区专用参考信号(CRS)相比,使用CSI-IM的干扰测量可能不那么精确。基于CSI-IM的不那么精确的干扰测量是由于使用零功率信道状态信息参考信号(ZP CSI-RS)的资源单元(RE)(在与被配置在另一个小区上的另一个CSI-IM重叠的情况下,其可能无法捕获来自发送点中的一些发送点的干扰)而造成的。
相比之下,在相同情况下,即使当CRS重叠时,基于CRS的测量也可以包括来自发送点的干扰贡献。这表明:对于高负载场景来说,与基于CSI-IM的干扰测量相比,基于CRS的干扰测量可以更精确,这主要是由于与CRS序列相比更小数量的CSI-IM配置。
对于CSI-IM干扰测量,网络向UE指示该UE要使用哪些资源单元(即,子载波和符号)来执行干扰测量。服务小区(节点)可以在给定的资源单元上不发送任何数据以去除自己小区的干扰,这可以通过在相同的资源单元上配置ZP CSI-RS来实现。其它节点将在指定的资源单元上发送数据。因此,UE对来自其它节点(例如,协作或相邻小区)的干扰进行测量。类似的CSI-IM测量和配置可以应用于相邻节点。然而,由于有限数量的可用配置,不同节点的CSI-IM之间将发生冲突。因此,由于冲突,将没有对来自一些节点的干扰进行估计。这导致对CSI反馈的干扰的估计不足。
附图说明
图1根据实施例示出了一种无线电信网络;
图2根据实施例示出了一种帧结构;
图3示出了当前CSI-IM资源配置的使用;
图4根据实施例示出了CSI-IM资源配置;
图5根据实施例示出了时域中的CSI-IM跳变;
图6根据实施例示出了一种CSI-IM池;
图7根据实施例示出了时域中CSI-IM跳变的较简单的情况;
图8根据实施例示出了一个以上的CSI-IM配置扩展的使用;
图9根据实施例示出了用于CSI-IM的CSI-RS子帧配置的参数的表格;
图10是根据实施例的、用于提供用于CSI反馈的增强型干扰测量的方法的流程图;
图11根据实施例示出了扩展的CSI-IM配置;
图12根据实施例示出了用于提供使用CSI反馈的增强型干扰测量的示例性机器的框图;以及
图13根据实施例示出了一种节点。
具体实施方式
以下的描述和附图充分地说明了具体实施例,以使得本领域技术人员能够实施它们。其它实施例可以并入结构、逻辑、电、过程和其它的改变。一些实施例的部分和特征可以包括在其它实施例的部分和特征中,或者替换其它实施例的部分和特征。权利要求中阐述的实施例包括那些权利要求的可用等效项。
实施例提供了用于CSI反馈的增强型干扰测量。CSI-IM资源由UE使用来执行干扰测量。根据实施例,CSI-IM跳变和/或CSI-IM资源的数量的增加可以用于提供用于CSI反馈的增强型干扰测量。
图1根据实施例示出了一种无线电信网络100。该说明性的电信网络包括eNB 110、120和130。电信网络可以包括多得多的eNB。eNB 110、120和130中的每个eNB可在相应的覆盖区域或小区112、122和132上操作。每个基站的覆盖区域112、122和132还可以分别划分成三个扇区,例如分别为扇区140、142、144、150、152、154和160、162、164。在一些情况下,eNB的每个扇区也可以被视为小区。在扇区A 140中示出了手持装置或其它用户设备(UE)170。扇区A 140在eNB 110的覆盖区域112内。UE 170向eNB 110发送传输并从eNB 110接收传输。当UE 170移动出扇区A 140以外,并且移动入扇区B 150内时,可以将UE 170切换到eNB 120。
在图1中,UE 170示出为接近小区边缘172,并由服务eNB 110来服务,UE 170从服务eNB 110接收服务信号180。随着UE 170接近小区边缘172,来自相邻eNB 120的干扰182变得更强。UE 170可以由eNB 110配置为使用CSI-RS和CSI-IM来执行用于CSI反馈的信道和干扰测量。
小区边缘172处的性能尤其易受到小区间干扰(ICI)182的影响。可以根据实施例实现对小区边缘172处的性能的提高。如上文所示出的,当UE 170移动离开服务eNB 110时,其SINR的下降可以归因于两个因素。随着UE 170移动得离相邻eNB 120越来越近,所接收的服务信号180的信号强度减小并且ICI 182增加。
图2根据实施例示出了一种无线帧结构200。在图2中,无线帧200具有10ms的总长度214。然后,将其划分成总数为20个的独立时隙210。每个子帧212包括长度为0.5ms的两个时隙210,并且每个时隙210包含OFDM符号数量Nsymb220。因此,在帧200中,存在10个子帧212。将子帧#18示出为参照子载波(频率)轴216和OFDM符号(时间)轴218来扩展。
资源单元(RE)230是传输的最小可识别单元,并且包括OFDM符号周期234的子载波232。传输在被称为资源块(RB)240的更大的单元中进行调度,资源块(RB)240在一个0.5ms时隙的时段中包括多个相邻子载波232。因此,用于在频域中分配资源的最小维度单元是“资源块”(RB)240,即,一组个相邻子载波232组成资源块(RB)240。每个子帧包括“NRB”个资源块,即,子帧中的子载波的总数量是
CSI-IM资源单元可以被配置成零功率(ZP)CSI-RS的资源单元。ZPCSI-RS可以被称为静默的CSI-RS或静默的资源单元(RE)。零功率CSI-RS是一种CSI-RS模式,其中,没有使用资源单元,即,在那些资源单元上不存在发送的信号。在一些情况下,零功率CSI-RS是RE的集合,在其中,UE可以假定没有传输。因此,ZP CSI-RS具有与非静默的CSI-RS相同的结构,除了在相应的资源单元上实际上并没有发送任何东西。ZP CSI-RS的一种用途是能够创建与在其它(相邻)小区中的数据传输相对应的“传输空洞(transmission hole)”以便促进使用CSI-IM的干扰测量。ZP CSI-RS的另一种意图是能够创建与在其它(相邻)小区中的实际CSI-RS传输相对应的“传输空洞”。这使得终端在没有受到来自其自己小区中的CSI-RS传输的干扰的情况下接收相邻小区的CSI-RS成为可能。因此,ZP CSI-RS可以用于通过对干扰小区中的ZP CSI-RS进行配置来提高给定小区中的CSI-RS的信号与干扰加噪声比(SINR),使得原本会导致干扰的资源单元是沉默的。
一个或几个CSI-IM可以由网络出于干扰测量的目的来配置(例如,为了具有针对与来自协作节点的数据消隐或数据传输相对应的CSI的不同干扰测量)。
图3示出了当前CSI-IM资源配置300的使用。图3中的图示是简化的表示。然而,本领域技术人员将根据LTE规范对CSI-IM表示进行一般化。在图3中,随时间330示出了具有两个CSI-IM 320、322的子帧310。图3中的CSI-IM1320由两个参数资源配置0(resourceConfig0)340和子帧配置0(subframeConfig0)342来配置。参数资源配置0 340定义用于CSI-IM1320的CSI-IM资源在子帧中的位置。子帧配置0 342定义用于CSI-IM1320的CSI-IM周期和CSI-IM子帧偏移。CSI-IM2322类似地包括资源配置1(resourceConfig1)350和子帧配置1(subframeConfigl)352参数,它们可以不同于CSI-IM1的资源配置0 340和子帧配置0 342。随时间推移,CSI-IM以定义的方式来映射在子帧中。例如,在图3中,每个子帧示出了第一位置处的CSI-IM1和第二位置处的CSI-IM2。因此,CSI-IM资源320、322在子帧310中具有固定位置。在干扰测量的情况下,可以在RE上对ZP CSI-RS资源进行配置,其中,CSI-IM资源(CSI-IM1和CSI-IM2)被配置用于UE去除自己的小区干扰并捕捉来自相邻小区的干扰。
图4是根据实施例的CSI-IM资源配置400的简化图示。根据实施例,通过使用CSI-IM跳变和/或通过增加可能的CSI-IM资源的数量来提供增强型干扰测量。根据实施例,用于增强型干扰测量的CSI-IM配置可以包括额外的参数集合资源配置1和子帧配置1以便增加CSI-IM资源的数量和/或提供CSI-IM资源在时间上的跳变。
图4根据实施例示出了随时间430发送的具有两个CSI-IM 420、422的子帧410。然而,本领域技术人员将认识到:可以实现具有额外CSI-IM资源和更复杂CSI-IM资源跳变的扩展的CSI-IM配置。图4中的CSI-IM1420包括两个参数{资源配置0 440,子帧配置0 442}以及{资源配置1 460,子帧配置1 462}。然而,可以仅存在与不同的子帧类型一起使用的一个资源配置(resourceConfig),例如,一个资源配置和多个子帧配置(subframeConfig)。类似地,CSI-IM2也可以包括两个参数集合。然而,本文所描述的实施例并不意在受限于该方面。在图4中,如上文参照图3所示出的,CSI-IM2422示出在相同位置(即位置2)。然而,图4中的第二子帧412示出CSI-IM1420在与额外的参数资源配置1 460和子帧配置1 462相对应的第二位置。在同一子帧中,CSI-IM2422已经跳变到第一位置。如在随后的子帧中可见到的,CSI-IM1420和CSI-IM2422继续跳变到每个子帧的不同位置。在一些实施例中,可以通过使用一个额外的参数资源配置1460或子帧配置1 462来增强CSI-IM配置。
如图4中所示出的,由UE用于执行干扰测量的资源单元将在时域中跳变。如果CSI-IM冲突碰巧发生在一个子帧(例如,子帧420)上,则在下一个子帧(例如子帧422)上冲突是不太可能的。位置参数资源配置0 440定义用于CSI-IM1420的CSI-IM资源的位置。子帧配置0 442定义用于CSI-IM1420的CSI-IM周期和CSI-IM子帧偏移。在图4中,资源配置0 440定义子帧中的CSI-IM位置具有10ms的周期。因此,子帧410在10ms之后再次重复。CSI-IM1在子帧412中的位置是由资源配置0 460定义的,其在图4中也具有10ms的周期。用于CSI-IM1的子帧移位是由子帧配置0 442和子帧配置1 462来配置的。因此,在图4中,子帧移位是5ms,并且CSI-IM1资源在5ms之后跳变。针对CSI-IM2示出了类似的配置,其也在5ms之后提供CSI-IM跳变。
在另一个实施例中,可以实现CSI-IM的伪随机跳变以避免或降低冲突发生的可能性。如果启用了CSI-IM的跳变,则小区中子帧内的CSI-IM资源以伪随机的方式在每个时隙或子帧中发生变化,从而避免了相邻小区中的CSI-IM的系统性冲突。
可以将CSI-IM资源跳变限制在CSI-IM资源池中,CSI-IM资源池可以是所配置的资源ZP CSI-RS资源的子集。CSI-IM资源池可以通过无线资源控制(RRC)协议消息来配置。来自CSI-IM池的特定CSI-IM资源可以根据使用种子cinit生成的伪随机序列来确定,其中,cinit可以是时隙索引、符号、物理小区ID和循环前缀(CP)类型的函数。然后,所生成的伪随机序列受限于所配置的CSI-IM资源池中的可用CSI-IM配置(资源)的最大数量。
来自CSI-IM资源池的CSI-IM资源索引δ’IM(其可以用于对给定时隙或子帧的干扰测量)可以根据以下公式来确定:
δ′IM=PCSI-IM{(fih(ns)+δIM)mod NCSI-IM}
其中,δIM是与通过资源配置来配置的用于UE的CSI-IM相对应的CSI-IM索引,ns是时隙或子帧编号,PCSI-IM是CSI-IM资源池,fih是用于从PCSI-IM中选择CSI-IM的随机值,并且NCSI-IM是所配置的CSI-IM资源池中的CSI-IM资源的总数量。
伪随机序列跳变函数可由以下公式来定义:
其中,伪随机序列c(i)可以使用cinit在每个无线帧或无线帧集合的开始处来进行初始化。函数fih(ns)标识从CSI-IM资源池PCSI-IM中随机地选择的CSI-IM。根据实施例,伪随机序列可以根据长度为31的Gold序列来确定。长度为MPN的输出序列c(n)(其中,n=0、1、……、MPN-1)由以下公式来定义:
c(n)=(x1(n+Nc)+x2(n+Nc))mod 2
x1(n+31)=(x1(n+3)+x1(n))mod 2
x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod 2
其中Nc=1600,并且第一m序列应使用x1(0)=1、x1(n)=0(n=1、2、……、30)来初始化。第二m序列的初始化是由来表示的。
为了确保协作多点发送和接收(CoMP)簇中CSI-IM资源的规划,合作小区可以通过使用相同的cinit值来使用相同的跳变模式。参数cinit可以使用RRC信令来针对UE独立地进行配置,或者从所配置的CSI-RS资源中的一个资源的物理小区ID、虚拟小区ID值nID来推导出。
图5根据实施例示出了时域500中的CSI-IM跳变。在给定子帧上,用于干扰测量的实际CSI-IM是由UE从集合PCSI-IM 510(例如,CSI-IM资源池,其可以是经配置的ZP CSI-RS资源的子集)中选择的。图5针对更一般情况下的具有三个基站(BS)BS1520、BS2522、BS3524的CoMP系统示出了CSI-IM跳变的示例。在子帧i 530中,示出了用于针对三个基站(BS)BS1520、BS2522、BS3524的CSI-IM资源跳变的CSI-IM资源池。
在子帧i 530中,在与第二行550的列1和列3相对应的资源单元中提供了PDSCH仿真(emulation)540、544,其中,列1和列3对应于BS1520和BS3524。如在与BS2522相对应的第二列的第二行550中所示出的CSI-IM资源的RE上没有执行PDSCH传输542。在子帧i+n 532中,在行7552中没有使用针对BS2522的PDSCH传输,但使用针对BS1420和BS3524的PDSH仿真540、544。在子帧i+2·n 534中,在行3554中使用针对BS2522的ZP CSI-RS 542以及针对BS1520和BS3524的PDSH仿真540、544。通过CS-IM 542的随机跳变,降低了具有BS1520、BS2522、BS3524的CoMP簇与另一个CoMP簇之间的CSI-IM冲突。
图6根据实施例示出了CSI-IM池600。提供了用于CSI-IM跳变的CSI-IM资源池610。在图6中,池610包括用于干扰测量跳变的10个CSI-IM620-638。为了能够进行针对不同干扰假设的CQI计算,配置了七个CSI-IM资源(例如,620、622、626、634、636、638)具有小区发送数据,并且资源624、628、630、632被配置为不发送数据。为了避免与PDSCH RE映射的潜在问题,可以通过在CSI-IM池的资源单元上配置ZP CSI-RS资源来避免CSI-IM池610上的PDSCH的传输。由于在ZP CSI-RS上没有执行PDSCH传输,因此,演进型节点B(eNB)可能需要在CSI-IM池中的一些资源单元上仿真PDSCH传输,以保证在UE处根据针对特定CSI-IM资源设置的干扰假设来进行的干扰测量。参照第一行中的CSI-IM,与第一列相关联的小区以及与第二列相关联的小区发送数据,但与第三列相关联的小区没有发送数据。因此,对与第一行相对应的RE上的干扰进行测量的UE将捕获与列1相关联的小区以及与列2相关联的小区的干扰。
图7根据实施例示出了时域700中CSI-IM跳变的更简单的情况。在图7中,根据实施例示出了不支持CoMP的一个BS 720。CSI-IM 742从子帧i 730中的行2750分别在时间上跳变到子帧i+n 732中的行6752和子帧i+2·n 734中的行3754。
图8根据实施例示出了一个以上的CSI-IM配置800的使用。在图8中,子帧810示出为具有两个CSI-IM资源:CSI-IM1820、CSI-IM2830。CSI-IM1820包括子帧配置0 822和资源配置0 824。CSI-IM2830包括子帧配置l-子帧配置N 832和子帧配置1-子帧配置N 834。因此,CSI-IM资源CSI-IM2830可以比CSI-IM1指示更多的用于干扰测量的资源单元。
图9根据实施例示出了用于CSI-RS子帧配置的参数的表格900,这些参数是用于CSI-IM子帧配置(子帧配置参数)。针对被配置用于CSI-RS传输的子帧,将参考信号序列映射到用作参考符号的复值调制符号ak,l(p)。因此,参数资源配置给出了子帧中的CSI-RS的RE模式,或者换句话说,定义了子帧中使用的CSI-RS的模式。在图9中,该表格针对一系列的CSI-RS子帧配置940示出了CSI-RS周期TCSI-RS 910和CSI-RS子帧偏移ΔCSI-RS 920。例如,对于CSI-RS子帧配置0-4 942来说,CSI-RS周期TCSI-RS 920是5个子帧912,并且CSI-RS子帧偏移ΔCSI-RS是0 922。因此,CSI-RS周期TCSI-RS 920的范围可以从T=5到80个子帧。偏移的范围可以从0到79个子帧。因此,CSI-IM资源配置可以包括资源配置0、子帧配置0。CSI-IM资源配置还可以包括资源配置1和子帧配置1。
图10是用于提供用于CSI反馈的增强型干扰测量的方法的流程图1000。在图10中,在1010,确定用于执行干扰测量的CSI-IM资源。在1020,确定用于改变所确定的CSI-IM资源在子帧中的位置的跳变模式。在1030,向其它节点和UE提供所确定的CSI-IM资源和所确定的CSI-IM资源跳变模式。在1040,服务节点可以根据所确定的CSI-IM资源和所确定的CSI-IM资源跳变模式来配置零功率(ZP)CSI-RS。干扰测量由UE基于由该UE接收到的CSI-IM以及ZP CSI-RS来执行。在1060,基于干扰测量来向服务节点提供信道状态信息反馈。在1070,由所确定的CSI-IM资源跳变模式使服务节点的CSI-IM与其它节点的CSI-IM之间的冲突最小化。
图11根据实施例示出了扩展的CSI-IM配置1100。在图11中,帧1110示出为包括10个子帧1120。子帧1120的子集内的经配置的CSI-IM资源可以用于推导出干扰测量。根据LTE-A规范,CSI-IM由两个参数定义:即分别描述在其中发送CSI-IM的下行链路子帧和资源单元集合的子帧配置和资源配置。
根据实施例,扩展的CSI-IM配置1100包括子帧0 1130,子帧0 1130包括用于描述用于第一干扰测量的下行链路子帧的集合的参数子帧配置01132。子帧4 1140包括用于描述用于第二干扰测量的下行链路子帧的集合的参数子帧配置1 1142。
根据3GPP版本1,CSI-IM配置是被配置成零功率CSI-RS的资源单元的子集。从实际考虑,使用单个CSI过程来支持在具有动态DL到UL配置系统中的干扰测量是优选的。然而,在单个CSI过程的情况下,UE可能支持一个CSI-IM配置。在该情况下,位于不同类型的下行链路子帧(例如,灵活子帧1150和非灵活子帧)上的CSI-IM资源传输也许不可能。这是由于5ms的倍数的CSI-IM的周期。
根据实施例的扩展的CSI-IM配置1100提供了包括参数子帧配置11142的扩展的CSI-IM配置。针对灵活子帧1150和非灵活子帧的独立的干扰测量因此可以通过使用子帧集合来实现。
图12根据实施例示出了用于提供使用CSI反馈的增强型干扰测量的示例性机器1200的框图,在该机器上可以执行本文所讨论的技术(例如,方法)中的任意一种或多种。在替代实施例中,机器1200可以作为单独的设备来进行操作,或者可以连接(例如联网)到其它机器。在网络化的部署中,机器1200可以在服务器-客户端网络环境中以服务器机器和/或客户端机器的身份来进行操作。在一个示例中,机器1200可以在对等(P2P)(或其它分布式)网络环境中充当对等机器。机器1200可以是个人计算机(PC)、平板PC、机顶盒(STB)、个人数字助理(PDA)、移动电话、web设备、网络路由器、交换机或桥接、或者能够(顺序或以其它方式)执行规定要由该机器执行的动作的指令的任何机器。此外,虽然示出了单个机器,但术语“机器”也应被理解为包括单独或联合执行一组(或多组)指令,以便执行本文中讨论的方法中的任意一种或多种方法的机器的任意集合,例如云计算、软件即服务(SaaS)、其它计算机集群配置。
如本文所描述的,示例可以包括下列各项或者可以在下列各项上操作:逻辑单元、多个组件、模块或机制。模块是能够执行指定操作的有形实体(例如,硬件),并且可以以某种方式来配置或布置。在一个示例中,可以用指定的方式将电路布置(例如,内在地或相对于诸如其它电路这类的外部实体)成模块。在一个示例中,一个或多个计算机系统(例如,单独的客户端或服务器计算机系统)或一个或多个硬件处理器1202中的至少一部分可以由固件或软件(例如,指令、应用部分或应用)配置成操作以执行指定操作的模块。在一个示例中,软件可以位于至少一个机器可读介质上。在一个示例中,软件在由模块的底层硬件执行时,使硬件执行指定操作。
因此,术语“模块”被理解为包括有形实体,是物理构建的、特别配置的(例如,硬线连接的)或临时(例如,暂时)配置的(例如,编程的)以便以指定方式进行操作,或者执行本文所描述的任何操作的至少一部分的实体。考虑对模块进行临时配置的示例,模块不需要在任何一个时刻进行实例化。例如,在模块包括使用软件来配置的通用硬件处理器1202的情况下,该通用硬件处理器可以在不同时刻被配置成各个不同的模块。软件可以相应地配置硬件处理器,例如,以便在一个时刻构成特定的模块,并且在另一个不同时刻构成不同的模块。术语“应用”或其变体在本文中扩展地用于包括例程、程序模块、程序、组件等等,并且可以在各种系统配置上实现,这些系统配置包括单处理器或多处理器系统、基于微处理器的电子设备、单核或多核系统、及其组合等等。因此,术语应用可以用于指代软件的实施例或者指代被布置为执行本文所描述的任何操作的至少一部分的硬件。
机器(例如,计算机系统)1200可以包括硬件处理器1202(例如,中央处理单元(CPU)、图形处理单元(GPU)、硬件处理器内核、或其任意组合)、主存储器1204和静态存储器1206,这些组件中的至少一些可经由互连链路(例如,总线)1208与其它组件进行通信。机器1200还可以包括显示单元1210、字母数字输入设备1212(例如,键盘)和用户接口(UI)导航设备1214(例如,鼠标)。在一个示例中,显示单元1210、输入设备1212和UI导航设备1214可以是触摸屏显示器。机器1200还可以包括存储设备(例如,驱动器单元)1216、信号生成设备1218(例如,扬声器)、网络接口设备1220以及一个或多个传感器1221(例如全球定位系统(GPS)传感器、罗盘、加速计或其它传感器)。机器1200可以包括输出控制器1228(例如串行(例如,通用串行总线(USB)、并行或其它有线或无线(例如,红外线(IR))连接)以便通信或控制一个或多个外围设备(例如,打印机、卡阅读器等)。
存储设备1216可以包括至少一个机器可读介质1222,在该至少一个机器可读介质1222上存储了体现本文所描述的技术或功能中的任意一种或多种或由其使用的一组或多组数据结构或指令1224(例如,软件)。指令1224还可以至少部分地位于另外的机器可读存储器(例如主存储器1204、静态存储器1206)上,或者在由机器1200对该指令的执行期间在硬件处理器1202中。在一个示例中,硬件处理器1202、主存储器1204、静态存储器1206或存储设备1216中的一种或任意组合可以构成机器可读介质。
虽然将机器可读介质1222示为单个介质,但术语“机器可读介质”可以包括被配置为存储一个或多个指令1224的单个介质或多个介质(例如,集中式或分布式数据库、和/或相关联的高速缓存器和服务器)。
术语“机器可读介质”可以包括以下任何介质:能够对用于由机器1200执行并且使机器1200执行本公开内容中的技术中的任意一种或多种技术的指令进行存储、编码或携带的介质,或者能够对由这些指令使用或者与这些指令相关联的数据结构进行存储、编码或携带的介质。非限制性的机器可读介质的示例可以包括固态存储器以及光学介质和磁介质。机器可读介质的具体示例可以包括:非易失性存储器(例如半导体存储器设备(例如,电可编程只读存储器(EPROM)、电可擦除可编程只读存储器(EEPROM)))、以及闪存设备;磁盘(例如内部硬盘和可移动盘);磁-光盘;以及CD-ROM和DVD-ROM盘。
指令1224还可以经由使用多种传输协议(例如,帧中继、互联网协议(IP)、传输控制协议(TCP)、用户数据报协议(UDP)、超文本传输协议(HTTP)等)中的任意一种的网络接口设备1220,使用传输介质通过通信网络1226来进行发送或接收。示例性通信网络可以包括:局域网(LAN)、广域网(WAN)、分组数据网络(例如,互联网)、移动电话网络(例如,信道接入方法包括码分多址(CDMA)、时分多址(TDMA)、频分多址(FDMA)以及正交频分多址(OFDMA))和蜂窝网络(例如全球移动通信系统(GSM)、通用移动电信系统(UMTS)、CDMA 2000 1x*标准和长期演进(LTE))、普通老式电话(POTS)网络、以及无线数据网络(例如,电气和电子工程师协会(IEEE)802标准族,包括IEEE 802.11标准(WiFi)、IEEE 802.16标准和其它标准)、对等(P2P)网络、或现在已知或以后开发的其它协议。
例如,网络接口设备1220可以包括一个或多个物理插口(例如,以太网、同轴电缆或电话插口)或一个或多个天线以便连接到通信网络1226。在一个示例中,网络接口设备1220可以包括多个天线以便使用单输入多输出(SIMO)、多输入多输出(MIMO)、或多输入单输出(MISO)技术中的至少一种技术来进行无线地通信。术语“传输介质”应被理解为包括能够对用于由机器1200执行的指令进行存储、编码或携带的任何非有形介质,并且包括用于促进此类软件的通信的数字或模拟通信信号或其它非有形介质。
图13根据实施例示出了一种节点1300。在图13中,处理器1310耦合到收发机1320和存储器1330。经由天线1340辐射和拦截通信信号。收发机1320对用于发送的信号或接收到的信号进行处理。存储器1330可以用于存储包括ZP CSI-RS干扰测量资源的池1332的数据。
处理器1310确定用于由节点服务的用户设备(UE)使用的CSI-IM资源以便执行用于CSI的干扰测量。该处理器确定用于改变所确定的CSI-IM资源在向所述被服务的UE发送的子帧中的位置的跳变模式。向收发机1320提供所确定的CSI-IM资源和所确定的CSI-IM资源跳变模式,以便传输给节点以及传输给UE。向该收发机提供根据所确定的CSI-IM资源和所确定的CSI-IM资源跳变模式的零功率(ZP)CSI-RS,以便传输给所述被服务的UE。基于由所述被服务的UE接收的CSI-IM和向所述被服务的UE提供的ZP CSI-RS来从所述被服务的UE接收的干扰测量,由处理器1310进行处理。由所确定的CSI-IM资源跳变模式使由收发机1320发送的CSI-IM与相邻节点的CSI-IM之间的冲突最小化。处理器1310还被布置为:生成伪随机数;以及定义所述CSI-IM资源的位置值,以便使用所述伪随机数使所述CSI-IM资源在子帧中的位置在时域中变化。处理器1310还选择所述子帧的子帧周期和子帧偏移。所述跳变模式由至少两个CSI-RS参数资源配置定义,并且所述周期和偏移由至少两个CSI-RS参数子帧配置定义。处理器1310还可以确定根据以下公式来定义的跳变模式:
其中,fih是用于从CSI-IM资源池PCSI-IM中选择所述CSI-IM的随机值,其中,(ns)是时隙或子帧的标识符,NCSI-IM是所配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是伪随机序列。
额外注释&示例:
示例1可以包括以下发明主题(例如用于执行动作的方法或单元),所述发明主题包括:由服务小区确定用于由被服务的用户设备(UE)使用来执行干扰测量的CSI-IM资源;使用RRC信令向所述被服务的UE发送所确定的CSI-IM资源;由所述服务小区使用RRC信令,根据所确定的CSI-IM资源来发送零功率(ZP)CSI-RS,以去除服务小区干扰;以及由所述服务小区接收与由所述被服务的UE使用由所述被服务的UE从所述服务小区接收的CSI-IM以及从所述服务小区向所述被服务的UE发送的ZP CSI-RS来执行的干扰测量相对应的CSI反馈。
示例2可以可选地包括示例1的发明主题,还包括:由服务小区生成伪随机数;以及由所述服务小区定义所述CSI-IM资源的位置值,以便使用所述伪随机数使所述CSI-IM资源在子帧中的位置在时域中变化。
示例3可以可选地包括示例1-示例2中的任意一个或多个示例的发明主题,还包括:由所述服务小区在子帧中提供多个CSI-IM资源,其中,由所述服务小区确定在子帧中提供所述CSI-IM资源还包括:由所述服务小区选择所述子帧的子帧周期和偏移。
示例4可以可选地包括示例1-示例3中的任意一个或多个示例的发明主题,还包括:由所述服务小区确定用于使用至少两个CSI-RS资源配置消息来改变所确定的CSI-IM资源在向所述被服务的UE发送的子帧中的位置的跳变模式;使用RRC信令向所述被服务的UE发送所确定的CSI-IM资源跳变模式;其中,确定所述跳变模式包括:选择用于使不同节点的CSI-IM资源之间的冲突最小化的跳变模式,并且其中,选择所述子帧的子帧周期和偏移还包括:使用至少两个CSI-RS子帧配置消息来定义所述周期和所述偏移。
示例5可以可选地包括示例1-示例4中的任意一个或多个示例的发明主题,其中,由所述服务小区确定所述跳变模式还包括根据以下公式来定义伪随机序列跳变函数:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
示例6可以可选地包括示例1-示例5中的任意一个或多个示例的发明主题,其中,由所述服务小区确定用于由用户设备(UE)使用来执行干扰测量的CSI-IM资源还包括:确定位于不同类型的子帧上的多个子帧配置和资源配置、位于第一类型的子帧上的第一子帧配置和资源配置、以及位于第二类型的子帧上的第二子帧配置。
示例7可以可选地包括示例1-示例6中的任意一个或多个示例的发明主题,其中,由所述服务小区确定用于由用户设备(UE)使用来执行干扰测量的CSI-IM资源还包括:确定包括第一子帧配置和第一资源配置的第一子帧集合,以及确定包括第二子帧配置的第二子帧集合,其中,所述第一子帧集合和所述第二子帧集合被布置为:为灵活子帧和非灵活子帧提供独立的干扰测量。
示例8可以包括以下发明主题(例如用于执行动作的方法或单元),所述发明主题包括:在用户设备(UE)处,从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源;从所述服务小区接收零功率(ZP)CSI-RS,以去除服务小区干扰;基于所接收的CSI-IM资源和所述ZP CSI-RS来进行干扰测量;以及基于所述干扰测量来向所述服务小区提供信道状态信息反馈。
示例9可以可选地包括示例8的发明主题,其中,从服务小区接收CSI-IM资源还包括:接收包括至少两个参数集合的CSI-IM资源,所述至少两个参数集合包括{资源配置0,子帧配置0}和{子帧配置1}。
示例10可以可选地包括示例8-示例9中的任意一个或多个示例的发明主题,还包括:接收CSI-IM资源跳变模式,其包括:接收定义所述跳变模式的至少两个CSI-RS资源配置消息,以及接收定义子帧周期和偏移的至少两个子帧配置消息。
示例11可以可选地包括示例8-示例10中的任意一个或多个示例的发明主题,其中,接收所述CSI-IM资源跳变模式还包括接收根据以下公式来定义的跳变模式:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
示例12可以可选地包括示例8-示例11中的任意一个或多个示例的发明主题,其中,由所述UE在子帧中从所述服务节点接收CSI-IM资源和所述ZP CSI-RS还包括:根据由所述服务小区定义的并在从所述服务小区接收的所述CSI-IM资源中提供的所述子帧的子帧周期和偏移来接收CSI-IM资源和所述ZP CSI-RS。
示例13可以可选地包括示例8-示例12中的任意一个或多个示例的发明主题,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收位于不同类型的子帧上的多个子帧配置和资源配置、位于第一类型的子帧上的第一子帧配置和第一资源配置、以及位于第二类型的子帧上的第二子帧配置。
示例14可以可选地包括示例8-示例13中的任意一个或多个示例的发明主题,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收包括第一子帧配置和第一资源配置的第一子帧集合,以及接收包括第二子帧配置的第二子帧集合,其中,所述第一子帧集合和所述第二子帧集合被布置为:为灵活子帧和非灵活子帧提供独立的干扰测量。
示例15可以可选地包括示例8-示例14中的任意一个或多个示例的发明主题,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:对所述第一子帧集合和所述第二子帧集合进行处理,以及基于所处理的第一子帧集合和第二子帧集合来执行干扰测量。
示例16可以可选地包括示例8-示例15中的任意一个或多个示例的发明主题,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收至少两个参数集合,所述至少两个参数集合位于不同类型的子帧上,其中,第一子帧配置和资源配置位于第一类型的子帧上,并且第二子帧配置和资源配置位于第二类型的子帧上,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:基于位于不同类型的子帧上的所处理的至少两个参数集合来执行干扰测量。
示例17可以可选地包括示例8-示例16中的任意一个或多个示例的发明主题,还包括:对所述至少两个参数集合中包括第一子帧配置和资源配置的第一参数集合,以及所述至少两个参数集合中包括第二子帧配置和资源配置的第二参数集合进行处理,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:基于所述第一子帧集合和所述第二子帧集合来为灵活子帧和非灵活子帧提供独立的干扰测量。
示例18包括针对服务节点的发明主题(例如设备、装置、客户端或系统),其包括:用于在其上存储数据的存储器;耦合到所述存储器的处理器,其用于对包括来自所述存储器的数据的与通信相关联的信号进行处理;耦合到所述处理器的收发机,其被布置为:发送和接收与通信相关联的信号;以及至少一个天线,其用于辐射用于发送的信号以及拦截用于接收的信号;其中,所述处理器还被布置为:确定用于由所述服务小区服务的用户设备(UE)使用来执行干扰测量的CSI-IM资源;向所述收发机提供所确定的CSI-IM资源以便发送给所述被服务的UE;根据所确定的CSI-IM资源向所述收发机提供零功率(ZP)CSI-RS以便发送给所述被服务的UE,以去除服务小区干扰;以及基于所述被服务的UE所接收的CSI-IM和从所述服务小区向所述被服务的UE提供的CSI-RS,来对从所述被服务的UE接收的干扰测量进行处理。
示例19可以可选地包括示例16-示例18的发明主题,其中,所述处理器还被布置为:生成伪随机数,以及定义所述CSI-IM资源的位置值,以便使用所述伪随机数使所述CSI-IM资源在子帧中的位置在时域中变化。
示例20可以可选地包括示例18-示例19中的任意一个或多个示例的发明主题,其中,所述处理器还选择所述子帧的子帧周期和偏移,其中,所述处理器还被布置为:确定用于改变所确定的CSI-IM资源在向所述被服务的UE发送的子帧中的位置的跳变模式;以及向所述收发机提供所确定的CSI-IM资源和所确定的CSI-IM资源跳变模式,以便使用所选择的周期和偏移来发送给所述被服务的UE,其中,通过所确定的跳变模式,使由所述收发机发送的CSI-IM与相邻节点的CSI-IM之间的冲突最小化。
示例21可以可选地包括示例18-示例20中的任意一个或多个示例的发明主题,其中,所述处理器还被布置为根据以下公式来确定所述跳变模式:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
示例22可以可选地包括示例18-示例21中的任意一个或多个示例的发明主题,其中,所述处理器还被布置为:通过确定包括{资源配置0,子帧配置0}和{子帧配置1}的至少两个参数集合来确定CSI-IM资源,所述两个参数集合位于不同类型的子帧上,第一子帧配置和第一资源配置位于第一类型的子帧上,并且第二子帧配置位于第二类型的子帧上。
示例23可以可选地包括示例18-示例22中的任意一个或多个示例的发明主题,其中,所述处理器还被布置为:基于位于不同类型的子帧上的至少两个参数集合来为灵活子帧和非灵活子帧提供独立的干扰测量。
示例24包括针对用户设备的发明主题(诸如设备、装置、客户端或系统),所述用户设备包括:处理器,其用于处理与通信相关联的信号;耦合到所述处理器的收发机,其被布置为:发送和接收与通信相关联的信号;其中,所述处理器还被布置为:使用无线资源控制信令从所述收发机接收来自服务小区的CSI-IM资源;对所接收的CSI-IM资源进行处理,以便对包括服务小区的节点执行干扰测量;对在所述收发机处从所述服务节点接收的零功率(ZP)CSI-RS进行处理,以去除服务小区干扰;基于在所述收发机处从所述服务节点接收的所述CSI-IM资源来执行与包括服务小区的节点相关联的干扰测量;以及基于所述干扰测量来向所述服务小区提供信道状态信息反馈。
示例25可以可选地包括示例24的发明主题,其中,所述处理器还被布置为:根据由所述服务小区定义的并在从所述服务小区接收的所述CSI-IM资源中提供的所述子帧的子帧周期和偏移,来在子帧中从所述服务小区接收CSI-IM和所述ZP CSI-RS。
示例26可以可选地包括示例24-示例25中的任意一个或多个示例的发明主题,其中,所述处理器还被布置为:对在所述收发机处从服务小区接收的用于改变所述CSI-IM资源在子帧中的位置的CSI-IM资源跳变模式进行处理;以及根据所接收的CSI-IM资源跳变模式在子帧中的位置处从所述服务小区接收CSI-IM和ZP CSI-RS。
示例27可以可选地包括示例24-示例26中的任意一个或多个示例的发明主题,其中,所述跳变模式是根据以下公式来定义的:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
示例28可以可选地包括示例24-示例27中的任意一个或多个示例的发明主题,其中,从服务小区接收CSI-IM资源还包括:接收包括至少两个参数集合的CSI-IM资源,所述至少两个参数集合包括{资源配置0,子帧配置0}和{子帧配置l},并且其中,所述处理器还被布置为:对所述至少两个参数集合进行处理;所述处理器还被布置为:基于所处理的至少两个参数集合来执行与包括服务小区的节点相关联的干扰测量。
示例29可以可选地包括示例24-示例28中的任意一个或多个示例的发明主题,其中,所述至少两个参数集合位于不同类型的子帧上,第一子帧配置和资源配置位于第一类型的子帧上,并且第二子帧配置位于第二类型的子帧上,所述处理器还被布置为:基于位于不同类型的子帧上的所处理的至少两个参数集合来执行干扰测量。
示例30可以可选地包括示例24-示例29中的任意一个或多个示例的发明主题,其中,所述至少两个参数集合被布置为:为灵活子帧和非灵活子帧提供独立的干扰测量。
示例31可以包括以下发明主题(例如用于执行动作的单元,或包括指令的机器可读介质,当所述指令由机器执行时,使所述机器执行动作),所述发明主题包括:通过服务小区确定用于由所述被服务的用户设备(UE)使用来执行干扰测量的CSI-IM资源;使用RRC信令向所述被服务的UE发送所确定的CSI-IM资源;由所述服务小区使用RRC信令,根据所确定的CSI-IM资源来发送零功率(ZP)CSI-RS,以去除服务小区干扰;以及由所述服务小区接收与由所述被服务的UE使用由所述被服务的UE从所述服务小区接收的CSI-IM以及从所述服务小区向所述被服务的UE发送的ZPCSI-RS来执行的干扰测量相对应的CSI反馈。
示例32可以可选地包括示例31的发明主题,还包括:由服务小区生成伪随机数;以及由所述服务小区定义CSI-IM资源的位置值,以便使用所述伪随机数使所述CSI-IM资源在子帧中的位置在时域中变化。
示例33可以可选地包括示例31-示例32中的任意一个或多个示例的发明主题,还包括:由所述服务小区在子帧中提供多个CSI-IM资源,其中,由所述服务小区确定在子帧中提供所述CSI-IM资源还包括:由所述服务小区选择所述子帧的子帧周期和偏移。
示例34可以可选地包括示例31-示例33中的任意一个或多个示例的发明主题,还包括:由所述服务小区确定用于使用至少两个CSI-RS资源配置消息来改变所确定的CSI-IM资源在向被服务的UE发送的子帧中的位置的跳变模式,使用RRC信令向所述被服务的UE发送所确定的CSI-IM资源跳变模式,其中,确定所述跳变模式包括:选择用于使不同节点的CSI-IM资源之间的冲突最小化的跳变模式,并且其中,选择所述子帧的子帧周期和偏移还包括:使用至少两个CSI-RS子帧配置消息来定义所述周期和所述偏移。
示例35可以可选地包括示例31-示例34中的任意一个或多个示例的发明主题,其中,由所述服务小区确定所述跳变模式还包括根据以下公式来定义伪随机序列跳变函数:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
示例36可以可选地包括示例31-示例35中的任意一个或多个示例的发明主题,其中,由所述服务小区确定用于由用户设备(UE)使用来执行干扰测量的CSI-IM资源还包括:确定位于不同类型的子帧上的多个子帧配置和资源配置、位于第一类型的子帧上的第一子帧配置和资源配置、以及位于第二类型的子帧上的第二子帧配置。
示例37可以可选地包括示例31-示例36中的任意一个或多个示例的发明主题,其中,由所述服务小区确定用于由用户设备(UE)使用来执行干扰测量的CSI-IM资源还包括:确定包括第一子帧配置和第一资源配置的第一子帧集合,以及确定包括第二子帧配置的第二子帧集合,其中,所述第一子帧集合和所述第二子帧集合被布置为:为灵活子帧和非灵活子帧提供独立的干扰测量。
示例38可以包括以下发明主题(例如用于执行动作的单元,或包括指令的机器可读介质,当所述指令由机器执行时,使所述机器执行动作),所述发明主题包括:在用户设备(UE)处,从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源;从所述服务小区接收零功率(ZP)CSI-RS,以去除服务小区干扰;基于所接收的CSI-IM资源和所述ZP CSI-RS来进行干扰测量;以及基于所述干扰测量来向所述服务小区提供信道状态信息。
示例39可以可选地包括示例38的发明主题,其中,从服务小区接收CSI-IM资源还包括:接收包括至少两个参数集合的CSI-IM资源,所述至少两个参数集合包括{资源配置0,子帧配置0}和{子帧配置1}。
示例40可以可选地包括示例38-示例39中的任意一个或多个示例的发明主题,还包括:接收CSI-IM资源跳变模式,其包括:接收定义所述跳变模式的至少两个CSI-RS资源配置消息,以及接收定义子帧周期和偏移的至少两个子帧配置消息。
示例41可以可选地包括示例38-示例40中的任意一个或多个示例的发明主题,其中,接收所述CSI-IM资源跳变模式还包括接收根据以下公式来定义的跳变模式:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
示例42可以可选地包括示例38-示例41中的任意一个或多个示例的发明主题,其中,由所述UE在子帧中从所述服务节点接收CSI-IM资源和所述ZP CSI-RS还包括:根据由所述服务小区定义并在从所述服务小区接收的所述CSI-IM资源中提供的所述子帧的子帧周期和偏移来接收CSI-IM资源和所述ZP CSI-RS。
示例43可以可选地包括示例38-示例42中的任意一个或多个示例的发明主题,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收位于不同类型的子帧上的多个子帧配置和资源配置、位于第一类型的子帧上的第一子帧配置和第一资源配置、以及位于第二类型的子帧上的第二子帧配置。
示例44可以可选地包括示例38-示例43中的任意一个或多个示例的发明主题,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收包括第一子帧配置和第一资源配置的第一子帧集合,以及接收包括第二子帧配置的第二子帧集合,其中,所述第一子帧集合和所述第二子帧集合被布置为:为灵活子帧和非灵活子帧提供独立的干扰测量。
示例45可以可选地包括示例38-示例44中的任意一个或多个示例的发明主题,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:对所述第一子帧集合和所述第二子帧集合进行处理;以及基于所处理的第一子帧集合和第二子帧集合来执行干扰测量。
示例46可以可选地包括示例38-示例45中的任意一个或多个示例的发明主题,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收至少两个参数集合,所述至少两个参数集合位于不同类型的子帧上,其中,第一子帧配置和资源配置位于第一类型的子帧上,并且第二子帧配置和资源配置位于第二类型的子帧上,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:基于位于不同类型的子帧上的所处理的至少两个参数集合来执行干扰测量。
示例47可以可选地包括示例38-示例46中的任意一个或多个示例的发明主题,还包括:对所述至少两个参数集合中包括第一子帧配置和资源配置的第一参数集合,以及所述至少两个参数集合中包括第二子帧配置和资源配置的第二参数集合进行处理,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:基于所述第一子帧集合和所述第二子帧集合来为灵活子帧和非灵活子帧提供独立的干扰测量。
上面的详细描述包括对附图的参考,附图形成了详细描述的一部分。附图通过说明的方式示出了可以实施的具体实施例。这些实施例在本文中也称为“示例”。这些示例可以包括除了所示出或所描述的那些元素之外的元素。但是,还预想了包括所示出或所描述的元素的示例。此外,针对特定示例(或其一个或多个方面)或者针对本文所示出或所描述的其它示例(或其一个或多个方面),还预想了使用所示出或所描述的那些元素(或其一个或多个方面)的任意组合或排列的示例。
通过引用方式将本文档中提及的出版物、专利和专利文献的全部内容并入本文,就像通过引用方式分别并入一样。在本文档与通过引用并入的那些文献之间存在不一致用法的情况下,所并入的参考文献中的用法是对本文档的用法的补充,对于不可调和的不一致情况来说,本文档中的用法是占主导的。
在本文档中,如专利文献中常见的,使用术语“一”或“一个”来包括一个或一个以上,其独立于“至少一个”或“一个或多个”的任何其它实例或用法。在本文档中,术语“或”用于指代非排他性的或,使得“A或B”包括“A而不是B”、“B而不是A”以及“A和B”,除非另外表明。在所附权利要求书中,术语“包括”和“其中”用作相应术语“包含”和“在其中”的普通英语等效形式。此外,在后面的权利要求中,术语“包括”和“包含”是开放式的,也就是说,包括除了在权利要求中的这种术语之后所列出的那些要素之外的要素的系统、设备、制品或过程仍然被认为落入该权利要求的范围之内。此外,在后面的权利要求中,术语“第一”、“第二”和“第三”等仅用作标签,并不旨在暗示这些对象的数字顺序。
上文的描述旨在是说明性的而非限制性的。例如,上文所描述的示例(或其一个或多个方面)可以与其它示例组合使用。可以由例如本领域普通技术人员在阅读上文的描述后使用其它实施例。摘要将允许读者能够迅速确定本技术公开内容的本质,例如,为了符合美国的37C.F.R.§1.72(b)。要理解,提交摘要将不是用于解释或限制权利要求的范围或含义。此外,在上文的具体实施方式中,可以将各个特征集中在一起以便精简本公开内容。然而,权利要求可以不阐述本文所公开的特征,因为实施例可以包括所述特征的子集。此外,与特定示例中公开的那些特征相比,实施例可以包括较少的特征。因此,在权利要求自身代表单独实施例的情况下,故将后面的权利要求并入具体实施方式中。本文所公开的实施例的范围应当参照所附权利要求连同这些权利要求所赋予的等效项的完整范围来确定。

Claims (30)

1.一种用于提供用于信道状态信息(CSI)反馈的增强型干扰测量(IM)的方法,包括:
由服务小区确定用于由被服务的用户设备(UE)使用来执行干扰测量的CSI-IM资源;
使用RRC信令向所述被服务的UE发送所确定的CSI-IM资源;
由所述服务小区使用RRC信令,根据所确定的CSI-IM资源来发送零功率(ZP)CSI-RS,以去除服务小区干扰;以及
由所述服务小区接收与由所述被服务的UE使用由所述被服务的UE从所述服务小区接收的CSI-IM以及从所述服务小区向所述被服务的UE发送的ZP CSI-RS来执行的干扰测量相对应的CSI反馈。
2.根据权利要求1所述的方法,还包括:
由服务小区生成伪随机数;以及
由所述服务小区定义所述CSI-IM资源的位置值,以便使用所述伪随机数使所述CSI-IM资源在子帧中的位置在时域中变化。
3.根据权利要求1所述的方法,还包括:
由所述服务小区在子帧中提供多个CSI-IM资源,其中,由所述服务小区确定在子帧中提供所述CSI-IM资源还包括:由所述服务小区选择所述子帧的子帧周期和偏移。
4.根据权利要求1所述的方法,还包括:
由所述服务小区确定用于使用至少两个CSI-RS资源配置消息来改变所确定的CSI-IM资源在向被服务的UE发送的子帧中的位置的跳变模式,使用RRC信令向所述被服务的UE发送所确定的CSI-IM资源跳变模式,其中,确定所述跳变模式包括:选择用于使不同节点的CSI-IM资源之间的冲突最小化的跳变模式,并且其中,选择所述子帧的子帧周期和偏移还包括:使用至少两个CSI-RS子帧配置消息来定义所述周期和所述偏移。
5.根据权利要求4所述的方法,其中,由所述服务小区确定所述跳变模式还包括根据以下公式来定义伪随机序列跳变函数:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
6.根据权利要求1所述的方法,其中,由所述服务小区确定用于由用户设备(UE)使用来执行干扰测量的CSI-IM资源还包括:确定位于不同类型的子帧上的多个子帧配置和资源配置、位于第一类型的子帧上的第一子帧配置和资源配置、以及位于第二类型的子帧上的第二子帧配置。
7.根据权利要求1所述的方法,其中,由所述服务小区确定用于由用户设备(UE)使用来执行干扰测量的CSI-IM资源还包括:确定包括第一子帧配置和第一资源配置的第一子帧集合,以及确定包括第二子帧配置的第二子帧集合,其中,所述第一子帧集合和所述第二子帧集合被布置为:为灵活子帧和非灵活子帧提供独立的干扰测量。
8.一种用于提供用于信道状态信息(CSI)反馈的增强型干扰测量的方法,包括:
在用户设备(UE)处,从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源;
从所述服务小区接收零功率(ZP)CSI-RS,以去除服务小区干扰;
基于所接收的CSI-IM资源和所述ZP CSI-RS来进行干扰测量;以及
基于所述干扰测量来向所述服务小区提供信道状态信息反馈。
9.根据权利要求8所述的方法,从服务小区接收CSI-IM资源还包括:接收包括至少两个参数集合的CSI-IM资源,所述至少两个参数集合包括{资源配置0,子帧配置0}和{子帧配置1}。
10.根据权利要求8所述的方法,还包括:
接收CSI-IM资源跳变模式,其包括:接收定义所述跳变模式的至少两个CSI-RS资源配置消息,以及接收定义子帧周期和偏移的至少两个子帧配置消息。
11.根据权利要求10所述的方法,其中,接收所述CSI-IM资源跳变模式还包括接收根据以下公式来定义的跳变模式:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
12.根据权利要求8所述的方法,其中,由所述UE在子帧中从所述服务节点接收CSI-IM资源和所述ZP CSI-RS还包括:根据由所述服务小区定义的并在从所述服务小区接收的所述CSI-IM资源中提供的所述子帧的子帧周期和偏移来接收CSI-IM资源和所述ZP CSI-RS。
13.根据权利要求8所述的方法,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收位于不同类型的子帧上的多个子帧配置和资源配置、位于第一类型的子帧上的第一子帧配置和第一资源配置、以及位于第二类型的子帧上的第二子帧配置。
14.根据权利要求8所述的方法,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收包括第一子帧配置和第一资源配置的第一子帧集合,以及接收包括第二子帧配置的第二子帧集合,其中,所述第一子帧集合和所述第二子帧集合被布置为:为灵活子帧和非灵活子帧提供独立的干扰测量。
15.根据权利要求14所述的方法,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:对所述第一子帧集合和所述第二子帧集合进行处理,以及基于所处理的第一子帧集合和第二子帧集合来执行干扰测量。
16.根据权利要求8所述的方法,其中,在所述用户设备(UE)处从服务小区接收用于由UE使用来对包括所述服务小区的节点执行干扰测量的CSI-IM资源还包括:接收至少两个参数集合,所述至少两个参数集合位于不同类型的子帧上,其中,第一子帧配置和资源配置位于第一类型的子帧上,并且第二子帧配置和资源配置位于第二类型的子帧上,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:基于位于不同类型的子帧上的所处理的至少两个参数集合来执行干扰测量。
17.根据权利要求8所述的方法,还包括:对所述至少两个参数集合中包括第一子帧配置和资源配置的第一参数集合,以及所述至少两个参数集合中包括第二子帧配置和资源配置的第二参数集合进行处理,其中,基于所接收的CSI-IM资源来进行干扰测量还包括:基于所述第一子帧集合和所述第二子帧集合来为灵活子帧和非灵活子帧提供独立的干扰测量。
18.一种服务小区,包括:
用于在其上存储数据的存储器;
耦合到所述存储器的处理器,其用于对包括来自所述存储器的数据的与通信相关联的信号进行处理;
耦合到所述处理器的收发机,其被布置为:发送和接收与通信相关联的信号;以及
至少一个天线,其用于辐射用于发送的信号以及拦截用于接收的信号;
其中,所述处理器还被布置为:
确定用于由所述服务小区服务的用户设备(UE)使用来执行干扰测量的CSI-IM资源;
向所述收发机提供所确定的CSI-IM资源以便发送给所述被服务的UE;
根据所确定的CSI-IM资源向所述收发机提供零功率(ZP)CSI-RS以便发送给所述被服务的UE,以去除服务小区干扰;以及
基于所述被服务的UE所接收的CSI-IM和从所述服务小区向所述被服务的UE提供的CSI-RS,来对从所述被服务的UE接收的干扰测量进行处理。
19.根据权利要求18所述的服务小区,其中,所述处理器还被布置为:生成伪随机数,以及定义所述CSI-IM资源的位置值,以便使用所述伪随机数使所述CSI-IM资源在子帧中的位置在时域中变化。
20.根据权利要求18所述的服务小区,其中,所述处理器还选择所述子帧的子帧周期和偏移,其中,所述处理器还被布置为:确定用于改变所确定的CSI-IM资源在向所述被服务的UE发送的子帧中的位置的跳变模式,以及向所述收发机提供所确定的CSI-IM资源和所确定的CSI-IM资源跳变模式,以便使用所选择的周期和偏移来发送给所述被服务的UE,其中,通过所确定的跳变模式,使由所述收发机发送的CSI-IM与相邻节点的CSI-IM之间的冲突最小化。
21.根据权利要求20所述的服务小区,其中,所述处理器还被布置为根据以下公式来确定所述跳变模式:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
22.根据权利要求18所述的服务小区,其中,所述处理器还被布置为:通过确定包括{资源配置0,子帧配置0}和{子帧配置l}的至少两个参数集合来确定CSI-IM资源,所述两个参数集合位于不同类型的子帧上,第一子帧配置和第一资源配置位于第一类型的子帧上,并且第二子帧配置位于第二类型的子帧上。
23.根据权利要求22所述的服务小区,其中,所述处理器还被布置为:基于位于不同类型的子帧上的所述至少两个参数集合来为灵活子帧和非灵活子帧提供独立的干扰测量。
24.一种用户设备,包括:
处理器,其用于处理与通信相关联的信号;
耦合到所述处理器的收发机,其被布置为:发送和接收与通信相关联的信号;以及
其中,所述处理器还被布置为:
使用无线资源控制信令从所述收发机接收来自服务小区的CSI-IM资源;
对所接收的CSI-IM资源进行处理,以便对包括服务小区的节点执行干扰测量;
对在所述收发机处从所述服务节点接收的零功率(ZP)CSI-RS进行处理,以去除服务小区干扰;
基于在所述收发机处从所述服务节点接收的所述CSI-IM资源来执行与包括服务小区的节点相关联的干扰测量;以及
基于所述干扰测量来向所述服务小区提供信道状态信息反馈。
25.根据权利要求24所述的用户设备,其中,所述处理器还被布置为:根据由所述服务小区定义的并在从所述服务小区接收的所述CSI-IM资源中提供的所述子帧的子帧周期和偏移,来在子帧中从所述服务小区接收CSI-IM和所述ZP CSI-RS。
26.根据权利要求24所述的用户设备,其中,所述处理器还被布置为:对在所述收发机处从服务小区接收的用于改变所述CSI-IM资源在子帧中的位置的CSI-IM资源跳变模式进行处理,以及根据所接收的CSI-IM资源跳变模式在子帧中的位置处从所述服务小区接收CSI-IM和ZP CSI-RS。
27.根据权利要求26所述的用户设备,其中,所述跳变模式是根据以下公式来定义的:
其中,fih是用于从经配置的CSI-IM资源池PCSI-IM中选择CSI-IM的随机值,(ns)是子帧的标识符,NCSI-IM是所述经配置的CSI-IM资源池中的CSI-IM资源的数量,并且c(i)是根据长度为31的Gold序列生成的伪随机序列。
28.根据权利要求24所述的用户设备,其中,从服务小区接收CSI-IM资源还包括:接收包括至少两个参数集合的CSI-IM资源,所述至少两个参数集合包括{资源配置0,子帧配置0}和{子帧配置l},并且其中,所述处理器还被布置为:对所述至少两个参数集合进行处理,所述处理器还被布置为:基于所处理的至少两个参数集合来执行与包括服务小区的所述节点相关联的干扰测量。
29.根据权利要求28所述的用户设备,其中,所述至少两个参数集合位于不同类型的子帧上,第一子帧配置和资源配置位于第一类型的子帧上,并且第二子帧配置位于第二类型的子帧上,所述处理器还被布置为:基于位于不同类型的子帧上的所处理的至少两个参数集合来执行干扰测量。
30.根据权利要求28所述的用户设备,其中,所述至少两个参数集合被布置为:为灵活子帧和非灵活子帧提供独立的干扰测量。
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