CN107181574B - 物理上行链路共享信道(pusch)传输时间间隔(tti)捆绑 - Google Patents

物理上行链路共享信道(pusch)传输时间间隔(tti)捆绑 Download PDF

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CN107181574B
CN107181574B CN201710432203.1A CN201710432203A CN107181574B CN 107181574 B CN107181574 B CN 107181574B CN 201710432203 A CN201710432203 A CN 201710432203A CN 107181574 B CN107181574 B CN 107181574B
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tti
pusch
ttis
tti bundle
bundle
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CN107181574A (zh
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A·霍里亚夫
A·切尔维亚科夫
M·希洛夫
A·马尔采夫
符仲凯
S·潘捷列夫
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Apple Inc
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Abstract

公开了用于组织物理上行链路共享信道(PUSCH)传输的技术。一种方法可以包括节点生成具有用于在至少一个PUSCH TTI束中在大约50子帧时间间隔中并在至少20个TTI中捆绑PUSCH传输用于混合自动重传请求(HARQ)过程的指令的传输时间间隔(TTI)捆绑配置信息。所述节点可以将所述TTI捆绑配置信息传输到无线设备以便使所述无线设备能够在大致50子帧时间间隔内在所述至少一个PUSCH TTI束中传输PUSCH信号。

Description

物理上行链路共享信道(PUSCH)传输时间间隔(TTI)捆绑
本申请是2013年03月15日提交的申请号为201380014548.5的同名专利申请的分案申请。
背景技术
无线移动通信技术使用各种标准和协议来在节点(例如,传输站)和无线设备(例如,移动设备)之间传输数据。一些无线设备在下行链路(DL)传输中使用正交频分多址(OFDMA)并且在上行链路(UL)传输中使用单载波频分多址(SC-FDMA)进行通信。使用用于信号传输的正交频分复用(OFDM)的标准和协议包括第三代合作伙伴计划(3GPP)长期演进(LTE)、通常被工业群体称为WiMAX(全球互操作性微波接入)的电气与电子工程师协会(IEEE)802.16标准(例如802.16e、802.16m)、以及通常被工业群体称为WiFi的IEEE 802.11标准。
在3GPP无线接入网络(RAN)LTE系统中,节点可以是与被称为用户设备(UE)的无线设备进行通信的演进型通用地面无线接入网络(E-UTRAN)节点B(也通常被表示为演进型节点B、增强型节点B、eNodeB或eNB)和无线网络控制器(RNC)的组合。下行链路(DL)传输可以是从节点(例如,eNodeB)到无线设备(例如,UE)的通信,而上行链路(UL)传输可以是从无线设备到节点的通信。
在LTE中,数据可以经由物理上行链路共享信道(PUSSH)从UE传输到eNodeB。PUSCH可以承载调度的数据业务和可能的控制信令。PUSCH可以被承载在无线帧的子帧中。一毫秒(ms)子帧可以允许一ms调度间隔(或者传输时间间隔(TTI))。上行链路覆盖会受到无线设备的最大传输功率限制。在一些情况中,互联网协议上语音(VoIP)分组例如不能够以可接受的误码率在一ms子帧中进行传输。用于传输VoIP分组的一个解决方案是对较高层处的VoIP分组进行分段以便允许VoIP分组在几个子帧上进行传输。然而,这样的分段会导致对于每一个分段的额外信令开销(包括资源分配信令和混合自动重传请求(混合ARQ或HARQ)确认信令)。用于提高在小区边缘处的上行链路VoIP覆盖的技术可以是使用TTI捆绑,其中来自介质访问控制(MAC)层的单个传送块(TB)在多个连续子帧中进行传输,一组信令消息(例如,HARQ确认反馈)用于整个上行链路传输。例如,除了单个一ms TTI以外,PUSCH还可以允许将4个TTI的组捆绑在一起。
附图说明
通过下面结合附图一起通过示例的方式说明本公开特征的详细描述中,本发明的特征和优点将变得明显,在附图中:
图1说明了根据示例在第四代(4G)频谱(例如,2.6吉赫兹(GHZ))和第三代(3G)频谱(例如,800兆赫兹(MHZ))之间的路径损耗比较;
图2说明了根据示例不同的下行链路(DL)和上行链路(UL)物理信道的最大耦合损耗(MCL)性能比较;
图3说明了根据示例具有4个连续传输时间间隔(TTI)和16子帧TTI束重传延迟的束的方框图;
图4说明了根据示例具有4个连续传输时间间隔(TTI)和12子帧TTI束重传延迟的束的方框图;
图5说明了根据示例具有20个连续传输时间间隔(TTI)和混合自动重传请求(HARQ)确认/否定确认(ACK/NACK)的束的方框图;
图6说明了根据示例具有20个交织的传输时间间隔(TTI)和混合自动重传请求(HARQ)确认/否定确认(ACK/NACK)的束的方框图;
图7说明了根据示例具有20个连续传输时间间隔(TTI)和多个混合自动重传请求(HARQ)确认/否定确认(ACK/NACK)的束的方框图;
图8说明了根据示例具有20个交织的传输时间间隔(TTI)和多个混合自动重传请求(HARQ)确认/否定确认(ACK/NACK)的束的方框图;
图9说明了根据示例具有10个连续传输时间间隔(TTI)的束的方框图;
图10说明了根据示例具有8个连续传输时间间隔(TTI)的束的方框图;
图11说明了根据示例使用扩展步行A模型(EPA)的各种传输时间间隔(TTI)捆绑配置的块误码率(BLER)和信号与噪声加干扰比(SINR)比较;
图12描绘了根据示例用于组织物理上行链路共享信道(PUSCH)传输的方法的流程图;
图13描绘了根据示例用于物理上行链路共享信道(PUSCH)传输时间间隔(TTI)捆绑的方法的流程图;
图14说明了根据示例的节点和无线设备的方框图;以及
图15说明了根据示例的无线设备的图。
现在将参照所说明的示例性实施例,并且在本文将使用特定的语言来对其进行描述。然而将理解的是,并不因而意在对本发明的范围进行限制。
具体实施方式
在公开和描述本发明之前,应该理解,本发明不局限于本文公开的特定的结构、过程步骤或材料,而是被扩展到其等效形式,如在相关领域中的普通技术人员将认识到的。还应该理解,本文采用的术语仅出于描述特定实施例的目的而被使用,并且并不意在是限制性的。不同附图中的相同附图标记代表相同的元件。流程图和过程中提供的数字为了清楚起见而在说明步骤和操作中被提供,并且不必指示特定的顺序或次序。
示例实施例
下面提供技术实施例的最初概述,并且接着随后进一步详细地描述具体的技术实施例。这一最初概述意在帮助读者更快地理解技术,但是并不意在标识该技术的关键特征或基本特征,也不意在限制请求保护的主题的范围。
蜂窝网络的覆盖可以是在计划初始无线网络系统部署时由网络操作者使用的主要度量。利用大的系统覆盖区域可以实现高水平的用户满意度。现有的第三代(3G)站点部署可以用于第四代(4G)LTE网络,但是LTE网络可能由于较高的载波频率(例如,2.0和2.6吉赫兹(GHz))而具有减少的覆盖。用于LTE的较高载波频率(例如,2.0和2.6GHz)可能具有比典型的3G频谱(例如,800兆赫兹(MHz))差得多的传播和建筑物内穿透属性,如果相同的3G站点网格被重新使用,则会导致LTE网络的差的覆盖。例如,图1说明了由LTE系统设计者用于技术评估而使用的800MHz和2.6GHz频谱之间的路径损耗802关于基站(例如,eNodeB)和移动终端(例如,UE)之间以米(m)为单位的距离的比较。4G频率816、818和820相对于3G频率810、812和814会具有大致10分贝(dB)损耗。由于在3G频率和4G频率之间的失衡,LTE网络和协议可以包括提高和增强LTE系统的覆盖的特征。
覆盖性能瓶颈或者传输功率失衡可以存在于下行链路和上行链路数据和/或控制信道之间。最大耦合损耗(MCL)可以用作不同的下行链路(DL)和上行链路(UL)物理信道的覆盖性能的度量。图2说明了不同的UL物理信道的上行链路MCL 822和824性能。例如,图2说明了格式2(F2)物理随机存取信道(PRACH)830、格式1(F1)物理上行链路控制信道(PUCCH)832、格式1a(F1a)PUCCH 834、格式2(F2)4比特PUCCH 836、F2 11比特PUCCH 838、具有56传送块尺寸(TBS)的物理上行链路共享信道(PUSCH)消息3(Msg3)840、具有144TBS的PUSCHMsg3 842、自适应多速率(AMR)互联网协议上语音(VoIP)PUSCH 844和介质数据速率PUSCH846的MCL。物理随机存取信道(PRACH)可以用于承载由前导签名构成的随机存取信道(RACH),该前导签名可以被随机地选择或者被预先指派。通过将签名划分为两个组,PRACH可以承载指示下一个上行链路消息所需的资源的量的较高层信息的一个比特。物理上行链路控制信道(PUCCH)可以承载包括信道质量指示符(CQI)、混合自动重传请求(HARQ)确认或否定确认(ACK/NACK)以及上行链路调度请求的上行链路控制信息。基于下行链路和上行链路的MCL,上行链路就LTE覆盖性能而言会是限制因素。例如,在图2中说明的示例中,PUSCHVoIP传输模式844可以具有139dB上行链路MCL。在示例中,物理上行链路共享信道(PUSCH)VoIP传输会限制LTE覆盖。可以使用PUSCH传输时间间隔(TTI)捆绑的各种增强型配置将覆盖间隙减少至少一dB。
可以使用优于传统TTI捆绑的TTI捆绑机制的变形来实现上行链路(例如PUSCH)覆盖提高。例如,TTI捆绑方法可以用于在比4个TTI更大的持续时间跨度上传输数据有效载荷(其中,一个TTI可以等于一个子帧持续时间),这可以增加接收机处的每信息比特累积能量。TTI捆绑的附加的益处可以是第二层(L2)无线链路控制(TLC)分段开销和循环冗余校验(CRC)开销的减小,这些开销对于小分组尺寸是相当显著的。TTI可以是最小时间单位,其中节点(例如,eNB)能够调度无线设备(例如,UE)用于上行链路或下行链路传输。
TTI捆绑可以包括用于提高在小区边缘处或者在差的无线条件中的覆盖。TTI捆绑能够在多个TTI中重复相同的数据,这可以有效地增加TTI长度,允许无线设备在较长的时间内进行传输。单个传送块(TB)能够被编码并且在一组连续或交织TTI中进行传输。可以在每一个捆绑的TTI中使用相同的混合ARQ(HARQ)过程号码。捆绑的TTI可以被处理为其中使用单个许可和单个确认的单个资源。可以使用每无线设备较高层信令来激活TTI捆绑。例如,TTI捆绑的触发可以是无线设备报告变得接近于最大发射功率值的发射功率。
传统TTI捆绑会具有各种限制。例如,TTI束在频分双工(FDD)和时分双工(TDD)中会仅具有4个子帧,TTI束的多个物理资源块(PRB)在频率分配(相对于时间分配)中会被限制到1-3个PRB,并且TTI束模式会使用基于四相相移键控(QPSK)的调制。时分双工(TDD)是用于分离下行链路和上行链路信号的时分复用(TDM)的应用。在TDD中,下行链路信号和上行链路信号可以被承载在相同的载波频率上,其中下行链路信号与上行链路信号使用不同的时间间隔,因此下行链路信号和上行链路信号不生成对于彼此的干扰。TDM是一种类型的数字复用,其中诸如下行链路或上行链路的两个或更多个比特流或信号被明显地同时传输为一个通信信道中的子信道,但是它们在信道上物理地依次轮流。在频分双工(FDD)中,上行链路传输和下行链路传输可以使用不同的频率载波进行操作。在FDD中,由于下行链路信号与上行链路信号使用不同的频率载波,因此可以避免干扰。
在示例中,互联网协议上语音(IP上语音或VoIP)服务会对TTI捆绑提出额外的约束。IP上语音(VoIP)可以指代在通过诸如互联网的互联网协议(IP)网络传送语音通信和多媒体会话时涉及的通信协议、技术、方法和传输技术。VoIP可以使用低速率延迟敏感业务模型。对于上行链路VoIP覆盖示例,可以使用自适应多速率(AMR)每秒12.2千比特(kbps)编解码器,36-41个字节(多达328比特)用于无线链路控制(RLC)服务数据单元(SDU)的传送块尺寸(TBS)。
对PUSCH传输的VoIP业务模型约束可以包括分组到达速率和最大分组空中接口时延(或者分组空中接口延迟)。分组到达速率度量可以指代新的VoIP分组可以被传输的周期性速率,其可以按照子帧、TTI或毫秒(ms)进行测量。例如,在图3中,分组到达速率234a可以是初始分组(例如,第一分组的子帧0)和随后分组(例如,第二VoIP分组240的子帧20和第三VoIP分组242的子帧40)之间的时间,例如20个TTI。分组空中接口时延度量可以指代从初始传输的第一TTI开始一直到可以用于分组传输的最后混合自动重传请求(混合ARQ或HARQ)重传的最后TTI的总分组传输时间,其可以按照子帧、TTI或ms进行测量。HARQ重传周期或HARQ往返时间(RTT)可以指代HARQ协议中的重传之间的时间,其可以包括分组从源(例如,UE)行进到目的地(例如,eNB)的总时间,用于在目的地处的解码和确认/否定确认(ACK/NACK)生成,用于将具有ACK/NACK的响应传输回到源并且用于在源处进行处理以便规划重传。HARQ重传可以包括初始分组和分组的随后的重传。如在图3中说明的,如果TTI束220a包括具有4个HARQ重传250a、252a、254a和256a的4个TTI,其中每一个HARQ重传周期230a是16个TTI,则分组空中接口时延会是大致50个TTI(例如52个TTI)。在示例中,术语“大致”可以指代标称值的正或负5%(±5%容限)。例如,大致50个子帧时间间隔可以指代48到52个子帧时间间隔。在另一示例中,术语“大致”可以指代标称值的正或负10%(±10%容限)。例如,大致50个子帧时间间隔可以指代45到55个子帧时间间隔。
HARQ可以是其中数据通过错误校正机制被保护免受嘈杂的无线信道影响的过程。HARQ可以使用不同的版本、类型或配置。例如,在增量冗余HARQ中,当接收机(例如,收发机)检测到错误数据时,该接收机(例如,具有PUSCH的eNB)可以不丢弃该数据。如果检测到相同的错误数据,则该数据的接收机可以传输NACK。发送方可以再次发送相同的数据,但是具有一组不同的编码比特(例如,不同的冗余版本)。接收机可以将先前接收的错误数据与来自发送方的新的数据进行组合。按照这种方式,对比特进行成功地解码的机会可以随着每一次传输而得到提高。该过程可以重复,只要接收方不能够对数据进行解码,并且最大分组空中接口延迟还没有达到。增量冗余HARQ的益处是,随着每一次重传,编码速率会得到降低。而在其它类型的HARQ中,在每一次重传中会使用相同的编码速率。
HARQ可以包括其中接收方将新的传输与来自之前传输的每一个先前的错误数据进行组合的过程。然而,HARQ的缺点会是当发送方尝试许多传输时在差的无线条件的情况下太多的控制开销。TTI捆绑通过使用冗余版本(PV)重传具有新的一组编码比特的错误数据来提供具有减少的HARQ信令开销的可选机制。RV可以在连续的TTI中发送相同组比特的几个版本,并且当节点对比特进行成功解码时,该节点能够发送回反馈指示符(例如,HARQACK/NACK)。
在示例中,VoIP分组到达速率会限制可能潜在地被分配用于一个VoIP分组的传输(包括所有HARQ重传)的TTI的最大数量。上行链路VoIP业务模型可以具有20ms VoIP分组到达速率,其中可以被分配用于一个分组的传输的TTI的最大数量等于20,在连续VoIP分组之间没有重叠或者并发。VoIP服务对于分组空中接口延迟或时延会具有50ms约束。分组空中接口时延约束会对能够被分配的HARQ重传的最大数量以及潜在的HARQ重传周期(例如,HARQ RTT)具有直接影响。
对于传统LTE PUSCH VoIP传输,可以在表1和图3中说明FDD的TTI捆绑机制。可以使用包含PUSCH 206a中的四个连续子帧202(TTI)的一个TTI束220a通过无线设备来传输VoIP分组的整个RLC SDU。HARQ ACK/NACK 208a反馈可以由节点提供。该传输可以占据频域中的单个物理资源块(1PRB)。用于FDD中的TTI捆绑的分配的HARQ重传周期230a(例如,HARQRTT)可以等于16个子帧。该16子帧HARQ RTT允许分配TTI束的最大四个重传250a、252a、254a和256a以便满足52个子帧的空中接口VoIP时延约束。因此,在使用所有四个重传的情况下,最大16个TTI可以用于一个VoIP分组的传输(例如,PUSCH)。
PUSCH跳频(在表1中)可以指代通过提供频率分集和干扰平均来提高上行链路性能的机制。PUSCH跳频可以在子帧之间(子帧间)或者在子帧之内(子帧内)。RLC分段允许较上层分组的分段和重组,以便使该较上层分组适应能够实际上通过无线接口进行传输的尺寸。在RLC分段中,无线设备可以对RLC SDU进行分段,并且在连续TTI中传输分段。然而,由于HARQ反馈误差,RLC分段会增加开销、控制信令以及对于分组损耗的易损性。TTI捆绑可以提供RLC分段的可选情况,或者TTI捆绑可以结合RLC分段来使用。
HARQ重传的最大数量 4
PUSCH跳频
UL RB的数量 1
调制/TBS QPSK/328比特
TTI捆绑 开(4个TTI)
RLC分段
TTI的总数量 16
表1
图3说明了对于TDD的TTI捆绑解决方案。束尺寸可以被固定到具有由单个RLC SDU产生的传送块(TB)的4个冗余版本(RV)的4个传输,其可以在具有HARQ过程204号0的连续TTI中被传输。在示例中,一个分组(例如,VoIP分组或RLC SDU)可以与一个HARQ过程相对应。多个HARQ过程可以指代能够在HARQ RTT(或TTI束,如果单个HARQ重传用于分组)内传输的HARQ过程的数量。在另一示例中,HARQ过程的示例可以指代能够在分组空中接口时延时间间隔内传输的HARQ过程的数量。在所有4个传输被节点(例如,eNB)接收并且解码之后,HARQ反馈能够被发送到无线设备。在示例中,PUSCH传输对于PUSCH传输可以具有高达1ms延迟并且对于通过节点对PUSCH进行解码和处理具有高达3ms延迟,因此,反馈在TTI#7(或者子帧7)中是可能的。再次在对于HARQ ACK/NACK传输的高达1ms延迟和对于由无线设备(例如,UE)对HARQ ACK/NACK进行解码和处理的高达3ms延迟之后,无线设备能够在PUSCH上接收反馈。因此,分组通过无线设备的最早HARQ重传在TTI#11或子帧12(或者TT1#11或子帧11,当HARQ ACK/NACK解码和处理小于2ms时)中会是可能的。因而,具有4的束尺寸的最短HARQ RTT可以是12ms(或11ms)。
在示例中,无线设备可以提供循环冗余校验(CRC)210、编码212和速率匹配(RM)214,并且在TTI束中的TTI期间生成几个冗余版本(例如,RV0、RV1、RV2和RV3)。可以在TTI束的连续TTI中传输与整个TLC SDU相对应的几个冗余版本(RV)。当TTI束(例如,传送块)的最后冗余版本由节点(例如,eNB)接收时,HARQ反馈可以被发送到无线设备。
基于TTI捆绑机制的传统LTE PUSCH VoIP传输设计的提高可以增加每信息比特传输的能量的量,这可以提供上行链路覆盖增强。例如,传统PUSCH VoIP传输可以使用对于一个VoIP的分组的传输可用的最大20个TTI中的16个TTI。提高可以用于增加TTI束尺寸,因此所有HARQ重传使用对于一个VoIP分组的传输可用的20个TTI。
可以使用各种方法来修改TTI捆绑机制以便提高PUSCH传输(例如PUSCH VoIP传输)。可以修改TTI捆绑机制以便通过可用资源的有效使用并且最大化传输的时间和/或频率分集来最大化对于上行链路服务(例如,上行链路VoIP服务)的覆盖性能。在示例中,可以修改TTI捆绑机制以便减小HARQ重传周期(即,HARQ RTT)和/或增加TTI束尺寸。
图4说明了通过减小对于具有相关联的HARQ ACK/NACK 208b的PUSCH 206b的HARQ重传周期(即,HARQ RTT 230b)的TTI捆绑增强。传统TTI束重传延迟可以被从16个子帧减少到12个子帧。结果,5个TTI束220b(即,5个重传250b、252b、254b、256b和258b)可以在52ms(即,52个子帧)分组空中接口时延232b时间间隔内进行传输,每一个TTI束220b具有4个TTI(即,总共20个TTI)。如果所有五个重传用于每一个VoIP分组,则可以使用所有20个TTI来实现百分之百(100%)子帧利用率。图4的减小的重传周期解决方案(即,解决方案1)可以被表示为“4TTI,5ReTx”,其中“#TTI”代表TTI束尺寸,并且“#ReTx”代表HARQ重传的最大数量。减小的重传周期解决方案可以保持20个TTI的分组到达速率234a,其中所使用的HARQ过程的数量可以是3而不是4。
可选地,可以增加默认的4TTI束尺寸。例如,可以将PUSCH TTI束尺寸扩展(即,解决方案2)到20、10或8个TTI。图5-8说明了通过将TTI束尺寸扩展到20个TTI的TTI捆绑增强。在示例中,一个TTI束尺寸增加到多达20个TTI可以增加可以用于VoIP分组传输的TTI的总数量(例如,20个TTI,而不是传统PUSCH传输中的16个TTI)。具有20个TTI的TTI束可以被实现为如图5所示的连续TTI捆绑分配,或者被实现为如图6所示的交织TTI捆绑分配。
图5说明了20个连续TTI的TTI束220c尺寸,单个HARQ传输250c用于PUSCH 206c,单个HARQ ACK/NACK 208c用于每一个TTI束。具有20个连续TTI的TTI束可以使用单个HARQ过程,因为对于分组的所有TTI可以在单个传输中被使用。具有20个连续TTI的TTI束可以与20TTI分组空中接口时延232c一起被传输,该20TTI分组空中接口时延232c在对于VoIP服务的大致50个子帧时间间隔约束内。图5的解决方案(即,解决方案2)可以被表示为“20TTI,1ReTx,连续TTI分配”,其中“连续TTI分配”代表具有连续TTI的TTI束。
图6说明了20个交织TTI的TTI束220d尺寸,单个HARQ传输250d用于PUSCH 206d,单个HARQ ACK/NACK 208d用于每一个TTI束。每一个交织TTI可以由不在该PUSCH TTI束中的TTI分离。具有20个交织TTI的TTI束可以使用两个HARQ过程,因为对于一个分组的TTI可以与另一个分组或过程的TTI交织。具有20个交织TTI的TTI束可以与40(或39)TTI分组空中接口时延232d一起被传输,该40(或39)TTI分组空中接口时延232d在对于VoIP服务的大致50子帧时间间隔约束内。使用TTI束的20和10个TTI的扩展束尺寸解决方案可以保持20个TTI的分组到达速率234a。图6的解决方案(即,解决方案2)可以被表示为“20TTI,1ReTx,交织TTI分配”,其中“交织TTI分配”代表具有交织TTI的TTI束。
在如在图6和图8中说明的交织分配的情况下,TTI束的TTI可以与空子帧或者承载其它分组(例如,VoIP分组)的子帧交织。交织TTI束能够以VoIP空中接口时延232d为代价来增加传输间隔250d(从20个TTI到40个TTI)和信道时间/频率分集。例如,交织TTI捆绑模式可以被设计为最大化相关联的PUSCH传输的频率分集。PUSCH频率跳频机制(与TTI捆绑一起使用)通过设计分配模式来实现以便包括来自不同帧的子帧,使得所有物理子帧索引(即,0-9)存在,而不是仅奇数或偶数子帧索引(如图6和图8所示)。
连续或交织TTI捆绑分配可以可选地被解释为五个标准TTI束的连续传输,如在图7中针对对于每一个连续TTI束具有5个HARQ ACK/NACK 208e的连续TTI束和在图8中针对对于每一个交织TTI束具有5个HARQ ACK/NACK 208f的交织TTI束中说明的。具有20个连续TTI的TTI束可以由20个TTI 232c(图5和图7)的最小时延进行特征化,但是分组可能由于时间分集的缺乏而经历性能损耗。
具有单个HARQ ACK/NACK的20TTI单个传输可能对于一些无线设备太鲁棒。因此在连续和交织TTI捆绑分配情况二者中,中间HARQ反馈208e和208f(例如,每一个4TTI一个中间HARQ反馈)可以用于在分组被成功地解码时实现分组传输(例如,VoIP分组传输)的早期终止的机制,这可以在系统中实现更有效的资源利用,如在图7的修改的连续解决方案中和在图8的修改的交织解决方案中说明的。图7的解决方案(即,解决方案2)可以被表示为具有早期终止机制的“20TTI,1ReTx,连续TTI分配”。图8的解决方案(即,解决方案2)可以被表示为具有早期终止机制的“20TTI,1ReTx,交织TTI分配”。
如在图9中说明的,等于10个子帧的TTI束220g尺寸也可以被定义。在示例中,PUSCH 206g的两个HARQ重传250g和252g可以用于停留在诸如大致50子帧分组空中接口时延的VoIP定时约束内。具有10个TTI的TTI束也可以利用TTI的最大数量(即,20个TTI)。为了使HARQ重传时间与VoIP分组到达速率一致并且满足VoIP定时约束,重传周期可以等于20个TTI或者30个TTI。图9说明了通过使用将TTI束220g尺寸扩展到10个TTI的TTI捆绑增强,对于在30ms(即,30个子帧)分组空中接口时延232g时间间隔中传输的总共20个TTI具有10个TTI的2个HARQ重传250g和252g。每一个TTI捆绑能够与HARQ ACK/NACK208g相关联。如果10TTI捆绑分配使用30子帧分组空中接口时延,则HARQ重传周期(即,HARQ RTT 230b)可以是20个TTI,并且所使用的HARQ过程的数量可以是2,如图9所示。如果10TTI捆绑分配使用40子帧分组空中接口时延,则HARQ重传周期可以是30个TTI,并且所使用的HARQ过程的数量可以是3(未示出)。图9的解决方案(即,解决方案2)可以被表示为“10TTI,2ReTx”。图9还说明了第一重传250g和第二重传250h的不同RV配置。
如在图10中说明的,也可以定义等于8个子帧的TTI束220h。在示例中,可以使用对于PUSCH 206h的最大两个HARQ重传250h和252h,因而仅16个TTI可以用于VoIP分组传输。当16个TTI而不是20个TTI用于分组时,可以实现最小到无额外的传输能量增益,即使具有不同的配置,例如具有8个TTI的TTI束。使用传统类型的HARQ定时,可以减少VoIP分组传输的时延,这会由于时间分集的缺乏而造成性能损耗。
图10说明了通过将TTI束220h尺寸扩展到8个TTI的TTI捆绑增强,对于在24ms(即,24个子帧)分组空中接口时延232h时间间隔中传输的总共16个TTI具有8个TTI的2个HARQ重传250h和152h。每一个TTI束能够与HARQ ACK/NACK 208h相关联。如果8TTI捆绑分配使用24子帧分组空中接口时延,则HARQ重传周期(即,HARQ RTT 230b)可以是16个TTI,并且所使用的HARQ过程的数量可以是2,如图10所示。当HARQ RTT等于16个TTI时,使用8个TTI的扩展的束尺寸解决方案能够使用24个TTI的分组到达速率234a(例如,在子帧24处的第二VoLP传输244以及在子帧48处的第三VoIP传输246)。如果8TTI捆绑分配使用32子帧分组空中接口时延,则HARQ重传周期可以是24个TTI,并且所使用的HARQ过程的数量可以是3(未示出)。当HARQ RTT等于24个TTI时,使用8个TTI的扩展的束尺寸解决方案可以使用32个TTI(未示出)的分组到达速率234a。图10的解决方案(即,解决方案2)可以被表示为“8TTI,2ReTx”。
可以在表2中简要地概述TTI捆绑增强示例的一些主要特征。
Figure BDA0001317662190000131
表2
TTI捆绑增强可以应用于FDD和TDD模式。在TDD模式中,TTI捆绑增强可以适合于每一个TDD上行链路-下行链路(UL-DL)配置。在TDD中,对于每一个分组(例如,VoIP分组)允许的TTI的最大数量可以是20个TTI。在LTE TDD中,对于每一个分组(例如,VoIP分组)允许的TTI的最大数量可以在2-12个TTI之间的范围内,其中每一个上行链路子帧被分配2个TTI。例如,UL-DL配置0可以具有6个上行链路子帧(其中其它4个子帧是下行链路或特殊的),因此12个TTI对于分组可用。类似地,UL-DL配置5可以具有1个上行链路子帧(其中其它9个子帧是下行链路或特殊的),因此2个TTI对于分组可用。在FDD中,无线帧的所有10个子帧被分配到上行链路,因此20个TTI对于分组可用。在LET TDD中,UL-DL配置0、1、2、3、4、5和6可以分别具有6、4、2、3、2、1和5个上行链路子帧,分别与12、8、4、6、4、2和10个TTI的可用TTI的最大数量相对应。可以基于对TTI捆绑增强的修改来提高UL-DL配置0、3和6,因为在仍然在小于大致50个子帧(即,50ms)的空中接口时延内进行操作的同时,不会使用可用TTI的最大数量。
除了减小HARQ重传周期(即,HARQ RTT)或者增加TTI束尺寸的TTI捆绑增强以外,可以进一步优化在每一个TTI中传输的一组冗余版本(RV)。例如,传统TTI捆绑机制可以使用传送块的不同冗余版本,其可以在不同的连续TTI中进行传输。例如,如果使用总共4个可能的RV(例如RV0、RV1、RV2和RV3),则不同的RV可以被指派到一个TTI束中的TTI,并且接着可以对于TTI束的HARQ重传重复相同的RV模式,这对于具有4个TTI的TTI束能够起作用。
对于当TTI束尺寸被增加时的情况,潜在的提高可以包括用于设置TTI束中的每一个TTI的RV的某一RV模式和/或指派规则。例如,可以在初始重传或随后的传输中使用{RV0,RV1,RV2,RV3}或者{RV0,RV2,RV3,RV1}模式的重复,在其它传输(例如,初始重传或随后的传输)中具有不同的模式。也可以使用其它增强型模式。
在卷积turbo码(CTC)中,系统比特对于解码过程具有较高的重要性。因此,在示例中,不是使用所有冗余版本{RV0,RV1,RV2,RV3}的简单连续重复,而是可以更加经常地传输冗余版本0(RV0)或冗余版本2(RV2)以便获得额外的提高并且提供进一步的优化。在示例中,RV0或RV2比其它RV更频繁的使用可以适用于各种TTI捆绑解决方案,包括传统TTI捆绑(具有4个TTI的TTI束和16子帧HARQ RTT)以及解决方案1和2。
图11和表3说明了链路级评估并且针对LTE PUSCH VoIP传输方案对TTI捆绑增强的性能与传统TTI捆绑进行比较。可以在图11中示出传统LTE PUSCH VoIP传输方案和基于TTI捆绑增强的PUSCH传输方案(例如,解决方案1和2)的示例性能。表3说明了在频率平坦(加性白高斯噪声(AWGN))和频率选择信道(扩展步行A模型(EPA)和扩展典型都市模型(ETU))中使用传统TTI捆绑和TTI捆绑增强的示例性能。一组多普勒频率FD={0,7.2赫兹(Hz),72Hz}可以用于对不同的用户移动性情况(例如,分别为0km/h、3km/h和30km/h)进行建模,并且检查上行链路VoIP传输对时间分集的敏感性。示例性能使用1PRB资源分配和328比特的传送块尺寸。可以在表3中概述块误码率(BLER)链路级示例模拟的结果,这也可以在图11中用曲线示出。等于2x10-2的残余BLER要求被应用于所说明的示例。图11和表3的示例使用链路级分析中的理想信道知识来排除信道估计误差的效应并且检查潜在的覆盖增益。图11对于具有FD=72Hz 850的EPA比较BLER 854与信噪比(SNR)或者信号与干扰加噪声比(SINR)。将解决方案1的覆盖增强解决方案862、具有20个交织TTI的解决方案2 864和具有10个TTI的解决方案2 866与传统TTI捆绑分配860(即,LTE版本8/9/10)进行比较。表3提供覆盖增强解决方案和传统TTI捆绑分配的SNR/MCL性能概述。
Figure BDA0001317662190000151
表3
在图11和表3中说明的模拟结果的分析可以显示在频率平坦AWGN信道中,各种考虑的方案可以在TTI的总数量从16个TTI增加到20个TTI时提供1dB增益。因而,每信息比特能量可以增加大致1dB。在频率选择信道中,所提出的TTI捆绑增强方案的性能可以取决于用户移动性情况。例如,在静止情况(FD=0Hz的EPA和ETU)中,相对SNR增益可以从0.4改变到高达1.3dB。两个解决方案(例如4TTI,5ReTx和10TTI,2ReTx)可以显示较好的性能。在EPA信道模型中,具有10个TTI的解决方案1和解决方案2的相对SNR增益可以稍微超过1dB提高目标。在低移动性情况(FD=7.2Hz的EPA和ETU)中,观察到的相对SNR增益可以低于1dB,这可能是由于所考虑的方案的较短的传输时间间隔导致的信道时间分集的缺乏。在高移动性情况(FD=72Hz的EPA和ETU)中,观察到的相对SNR增益可以稍微超过1dB(例如0.9-1.4dB)。SNR提高可能是由于在时域中增加的信道变化以及因而信道时间分集特性的利用。
在另一示例中,可以基于无线设备(例如,UE)来选择TTI捆绑配置的自适应选择。自适应UE特定TTI捆绑可以用于提高服务(例如,VoIP服务)的覆盖和系统性能。例如,TTI束中的子帧的数量可以通过考虑延迟预算并且维持HARQ定时操作而被自适应地设置为链路适应过程的一部分。不同的链路预算可以用于不同的无线设备(例如,UE)以便补偿无线设备可能具有的覆盖间隙。例如,如果节点(例如,eNB)在深阴影中,则较长的传输持续时间可以帮助节点累积每信息比特的信号能量,并且对信号(例如PUSCH)进行解码。在功率限制模式中,分配带宽可以被减小以便增加信号功率谱密度,并且较长的TTI捆绑可以被应用以便增加SNR。VoIP服务可以是低速率服务,使得在一个物理资源块中以最大功率进行的传输可以在维持吞吐量要求的同时提供最大功率谱密度。可以通过基于链路适应(即,自适应TTI捆绑扩展)或者HARQ过程的自适应组合来自适应地改变UE特定TTI束来执行。
自适应TTI捆绑扩展可以用于基于链路适应来自适应性规定UE特定TTI束尺寸,并且对于经历差的覆盖的无线设备(例如,UE)使用更多的TTI。例如,为了与传统LTE HARQ定时操作对准,TTI捆绑可以包括4、8、12、16或20个子帧。
在HARQ过程的自适应组合中,几个HARQ过程(例如,并行HARQ过程)可以用于在时间上顺序地传输具有相同信息比特的TTI束(每一个束包括至少四个子帧),而不等待来自节点(例如,eNB)的ACK/NACK反馈。TTI束可以承载具有不同冗余版本的信号或者使用简单的序列重复(例如,具有相同的RV版本模式)。在HARQ过程的自适应组合中,节点可以向无线设备通知哪个HARQ过程承载相同的信息比特。
可以包括减小的重传周期(即,解决方案1)、扩展的TTI束尺寸(即,解决方案2)、RV的修改或者自适应UE特定TTI捆绑的TTI捆绑增强可以提供LTE PUSCH VolP传输设计的提高,这与传统LTE解决方案(例如,传统TTI捆绑分配)相比较可以生成大致1dB的覆盖性能增益。
另一示例提供用于组织物理上行链路共享信道(PUSCH)传输的方法500,如在图12中的流程图所示。该方法可以作为指令在机器上被执行,其中该指令被包括在至少一个计算机可读介质上。该方法包括下列操作:在节点处生成具有用于在至少一个PUSCH TTI束中在大致50个子帧时间间隔中并且在至少20个TTI中捆绑PUSCH传输用于混合自动重传请求(HARQ)过程的指令的传输时间间隔(TTI)捆绑配置信息,如在块510中示出的。接下来是下列操作:将TTI捆绑配置信息传输到无线设备以便使无线设备能够在大致5子帧时间间隔内在至少一个PUSCH TTI束中传输PUSCH信号,如在块520中示出的。
在示例中,大致50子帧时间间隔可以代表对于每一个分组的互联网协议上语音(VoIP)空中接口时延约束,至少20个TTI可以是被分配到每一个分组的TTI的最大数量,并且每一个分组可以具有20个TTI的VoIP分组到达速率。每一个TTI可以包括无线帧的一毫秒(ms)子帧。TTI捆绑配置信息的至少一部分可以经由诸如无线资源控制(RRC)信令的较高层信令而被传输到无线设备。
在配置中,每一个PUSCH TTI束可以包括具有12子帧TTI束重传延迟的4个连续TTI,其中无线设备的多达5个HARQ重传可以在大致50子帧时间间隔(例如,52子帧时间间隔)内发生。如果对PUSCH信号进行解码不需要所有5个HARQ重传(例如,可以使用少于5个HARQ重传来对PUSCH信号进行正确地解码),则可以使用少于20个TTI,因此该节点能够传输并且该无线设备能够接收“多达”至少20个TTI的至少一个PUSCH TTI束。术语“大致”可以指代标称值的加或减10%(±10%容限)。例如,大致50子帧时间间隔可以指代45到55子帧时间间隔。在示例中,每一个PUSCH TTI束可以包括4个连续TTI和频域中的多个物理资源块。HARQ反馈指示符可以与每一个所接收的PUSCH TTI束相关联,其中HARQ反馈指示符可以包括确认(ACK)或否定确认(NACK)。对于每一个所接收的PUSCH TTI束,节点可以将HARQ反馈指示符发送到无线设备。包括具有12子帧TTI束重传延迟的4个连续TTI的PUSCH TTI束可以包括对于一个无线设备被配置用于PUSCH TTI捆绑模式操作的多达3个HARQ过程。
在另一配置中,每一个PUSCH TTI束可以包括20个连续TTI。HARQ反馈指示符可以与PUSCH TTI束相关联,或者多个中间HARQ反馈指示符可以与PUSCH TTI束相关联。每一个HARQ反馈指示符可以被配置为提供对于PUSCH TTI束中的至少4个TTI的反馈。例如,每一个中间HARQ反馈指示符可以提供对于至少4个TTI的反馈(例如,ACK/NACK),并且单个HARQ反馈指示符可以提供对于PUSCH TTI束中的20个TTI的反馈。每一个PUSHC TTI束可以包括20个连续TTI以及频域中的多个物理资源块。20个连续TTI可以包括对于一个无线设备被配置用于PUSCH TTI捆绑模式操作的一个HARQ过程。
在另一配置中,每一个PUSCH TTI束可以包括20个交织TTI。每一个交织TTI可以由没有位于PUSCH TTI束中的TTI分离。HARQ反馈指示符可以与PUSCH TTI束相关联,或者多个中间HARQ反馈指示符可以与PUSCH TTI束相关联。每一个HARQ反馈指示符可以被配置为提供对于PUSCH TTI束中的至少4个TTI的反馈。每一个PUSHC TTI束可以包括20个交织TTI以及频域中的多个物理资源块。20个交织TTI可以包括对于不同无线设备被配置用于PUSCHTTI捆绑模式操作的两个HARQ过程。
在另一配置中,每一个PUSCH TTI束可以包括具有20子帧TTI束重传延迟或者30子帧TTI束重传延迟的10个连续TTI。HARQ反馈指示符可以与每一个所接收的PUSCH TTI束相关联,其中,HARQ反馈指示符可以包括ACK和NACK。对于每一个所接收的PUSCH TTI束,节点可以将HARQ反馈指示符发送到无线设备。对于20子帧TTI束重传延迟,两个HARQ过程可以对于不同的无线设备被配置用于PUSCH TTI捆绑模式操作。对于30子帧TTI束重传延迟,三个HARQ过程可以对于不同的无线设备被配置用于PUSCH TTI捆绑模式操作。
在另一示例中,与初始HARQ传输相对应的PUSCH TTI束和与随后的HARQ重传相对应的PUSCH TTI束可以占据不同数量的TTI。例如,与初始HARQ传输相对应的PUSCH TTI束可以包括8个TTI(连续或交织),并且与随后的HARQ重传相对应的PUSCH TTI束可以包括4个TTI(连续或交织)。在示例中,每一个PUSCH TTI束可以与PUSCH传输的初始PUSCH传输或随后的HARQ重传的一个实例相关联。初始和随后的HARQ重传可以具有不同的TTI束尺寸或配置。在另一示例中,与初始PUSCH传输相对应的PUSCH TTI束可以包括8个连续TTI,并且与HARQ重传相对应的其余PUSCH TTI束可以包括具有16子帧TTI束重传延迟的4个连续TTI。
在另一配置中,PUSCH TTI束可以承载不同的冗余版本(RV)以便最大化共有信息并且提取TTI捆绑传输和重传的最大编码和分集增益。例如,用于PUSCH TTI束的多个TTI可以包括大于具有RV1或RV3的多个TTI的冗余版本(RV)0,或者对于PUSHC TTI束,具有RV2的TTI的数量可以大于具有RV1或RV3的TTI的数量。例如,对于PUSCH TTI束中的10个连续TTI,三个TTI可以具有RV0,两个TTI可以具有RV1,三个TTI可以具有RV2,并且两个TTI可以具有RV3。
该方法可以进一步包括所述节点基于链路适应信息来自适应地配置用户设备(UE)特定TTI束尺寸。每一个TTI束可以包括4、8、10、12、16或20个子帧的TTI束尺寸,并且TTI捆绑配置信息可以包括TTI束尺寸。
在另一配置中,该方法可以进一步包括节点自适应地组合至少两个混合自动重传请求(HARQ)过程。每一个HARQ过程可以包括PUSCH TTI束,并且TTI捆绑配置信息可以包括对于每一个TTI束的冗余版本(RV)信息或简单序列重复信息。
在另一示例中,该方法可以进一步包括所述节点从无线设备接收包括大致50子帧时间间隔内的至少一个PUSCH TTI束的PUSCH信号传输,对来自所接收的PUSCH信号的数据进行解码,并且基于TTI捆绑配置信息和所解码的数据来将至少一个混合自动重传请求-确认(HARQ-ACK)反馈传输到无线设备。
另一示例提供如在图13中的流程图中示出的用于物理上行链路共享信道(PUSCH)传输时间间隔(TTI)捆绑的方法600。该方法可以作为指令在机器上被执行,其中该指令被包括在至少一个计算机可读介质或者一个非暂态机器可读存储介质上。该方法包括下列操作:在无线设备处从节点接收包括用于在至少20个TTI中捆绑PUSCH传输用于混合自动重传请求(HARQ)过程的指令的TTI捆绑配置信息,如在块610中示出的。接下来是捆绑多达至少20个TTI以便形成至少一个PUSCH TTI束的操作,如在块620中示出的。该方法的下一个操作可以是在大致50子帧时间间隔内将多达至少20个TTI的至少一个PUSCH TTI束传输到节点,如在块630中示出的。
在配置中,每一个PUSCH TTI束可以包括具有12子帧TTI束重传延迟的4个连续TTI,其中多达5个HARQ重传用于无线设备。大致50子帧时间间隔可以是52毫秒(ms)。HARQ反馈指示符可以与每一个所接收的PUSCH TTI束相关联,其中HARQ反馈指示符可以包括ACK或NACK。对于每一个所接收的PUSCH TTI束,无线设备可以从节点接收HARQ反馈指示符。
在另一配置中,每一个PUSCH TTI束可以包括20个连续TTI或20个交织TTI。每一个交织TTI可以由没有位于PUSCH TTI束中的TTI分离。HARQ反馈指示符可以与PUSCH TTI束相关联,或者多个中间HARQ反馈指示符可以与PUSCH TTI束相关联。每一个HARQ反馈指示符可以被配置为提供对于PUSCH TTI束中的至少4个TTI的反馈。
在另一配置中,每一个PUSCH TTI束可以包括具有20子帧TTI束重传延迟或30子帧TTI束重传延迟的10个连续TTI。HARQ反馈指示符可以与每一个所接收的PUSCH TTI束相关联,其中该HARQ反馈指示符可以包括ACK和NACK。对于每一个所接收的PUSCH TTI束,无线设备可以从节点接收HARQ反馈指示符。
图14说明了示例节点710和示例无线设备720。节点可以包括节点设备712。节点设备或节点可以被配置为与无线设备进行通信。节点设备可以被配置用于组织物理上行链路共享信道(PUSCH)传输。节点设备可以包括处理模块714和收发机模块716。处理模块可以被配置为在至少一个PUSCH TTI束中在大致50子帧时间间隔中在至少20个TTI中生成具有用于捆绑PUSCH传输用于混合自动重传请求(HARQ)过程的指令的传输时间间隔(TTI)捆绑配置信息。收发机模块可以被配置为将TTI捆绑配置信息传输到无线设备以便使无线设备能够使用大致50子帧时间间隔内的至少一个PUSCH TTI束来传输PUSCH信号。
在配置中,每一个TTI束可以包括具有12子帧TTI束重传延迟的4个连续TTI以及对于无线设备的多达5个HARQ重传。大致50子帧时间间隔可以是52毫秒(ms)。在另一配置中,每一个TTI束可以包括20个连续TTI或20个交织TTI。每一个交织TTI可以由没有位于PUSCHTTI束中的TTI分离。HARQ反馈指示符可以与PUSCH TTI束相关联,或者多个中间HARQ反馈指示符可以与PUSCH TTI束相关联。每一个HARQ反馈指示符可以被配置为提供对于PUSCH TTI束中的至少4个TTI的反馈。在另一配置中,每一个PUSCH TTI束可以包括具有20子帧TTI束重传延迟或30子帧TTI束重传延迟的10个连续TTI。
在另一示例中,收发机可以被进一步配置为接收包括在大致50个子帧时间间隔内的至少一个TTI束中的至少20个TTI的PUSCH信号传输。处理模块可以被进一步配置为对来自所接收的PUSCH信号的数据进行解码。收发机模块可以被进一步配置为基于TTI捆绑配置信息和所解码的数据将至少一个混合自动重传请求-确认(ACK)HARQ-ACK反馈传输到无线设备。
节点710可以包括基站(BS)、节点B(NB)、演进型节点B(eNB)、基带单元(BBU)、远程无线头端(RRH)、远程无线设备(RRE)或远程无线单元(RRU)。
无线设备720可以包括收发机模块724和处理模块722。无线设备可以被配置用于物理上行链路共享信道(PUSCH)传输时间间隔(TTI)捆绑。收发机模块可以被配置为从节点接收包括用于在至少20个TTI中捆绑PUSCH传输用于混合自动重传请求(HARQ)过程的指令的TTI捆绑配置信息。处理模块可以被配置为对多达至少20个TTI进行TTI捆绑以便形成至少一个PUSCH TTI束。收发机模块可以被进一步配置为在大致50子帧时间间隔内将多达至少20个TTI的至少一个PUSCH TTI束传输到节点。
每一个PUSCH TTI束可以包括4个连续TTI、20个连续TTI或20个交织TTI、10个连续TTI或8个连续TTI。包括4个连续TTI的PUSCH TTI束可以具有12个子帧TTI束重传延迟,具有多达5个HARQ重传。包括20个TTI的PUSCH TTI束可以具有与TTI束相关联的HARQ反馈指示符或者与TTI束相关联的多个中间HARQ反馈指示符。每一个HARQ反馈指示符可以被配置为提供对于TTI束中的至少4个TTI的反馈。每一个交织TTI可以由没有位于TTI束中的TTI分离。
在另一示例中,收发机模块724可以进一步操作为传输被配置用于在大致50子帧周期性时间间隔内的至少20个TTI的TTI捆绑的PUSCH信号,并且基于来自节点的否定确认(NACK)混合自动重传请求(HARQ)反馈来重新传输信号。
图15提供诸如用户设备(UE)、移动站(MS)、移动无线设备、移动通信设备、平板计算机、手持设备或者其它类型的无线设备的无线设备的示例说明。无线设备可以包括被配置为与节点、宏节点、低功率节点(LPN)或诸如基站(BS)、演进型节点B(eNB)、基带单元(BBU)、远程无线头端(RRH)、远程无线设备(RRE)、中继站(RS)、无线设备R(RE)的传输站或者其它类型的无线广域网(WWAN)接入点进行通信的一个或多个天线。无线设备可以被配置为使用包括3GPP LTE、WiMAX、高速分组接入(HSPA)、蓝牙和WiFi中的至少一个的无线通信标准进行通信。无线设备可以使用对于每一个无线通信标准单独的天线或者使用对于多个无线通信标准共享的天线进行通信。无线设备可以在无线局域网(WLAN)、无线个人域网(WPAN)和/或WWAN中进行通信。
图15还提供可以用于来自无线设备的音频输入和输出的麦克风和一个或多个扬声器。显示屏可以是液晶显示器(LCD)屏幕或者诸如有机发光二极管(OLED)显示器的其它类型的显示屏。显示屏可以被配置为触摸屏。触摸屏可以使用电容、电阻或另一类型的触摸屏技术。应用处理器和图形处理器可以耦合到内部存储器以便提供处理和显示能力。非易失性存储器端口也可以用于向用户提供数据输入/输出选项。非易失性存储器端口也可以用于扩展移动设备的存储器能力。键盘可以与无线设备集成在一起或者无线地连接到该无线设备以便提供额外的用户输入。也可以使用触摸屏来提供虚拟键盘。
各种技术或其某些方面或部分可以采取被体现在有形介质中的程序代码(即,指令)的形式,该有形介质例如是软盘、CD-ROM、硬驱或任何其它机器可读存储介质,其中当程序代码被装入到诸如计算机的机器中并且由该机器执行时,该机器变为用于实施各种技术的装置。在程序代码在可编程计算机上执行的情况下,计算设备可以包括处理器、由处理器可读的存储介质(包括易失性和非易失性存储器和/或存储元件)、至少一个输入设备和至少一个输出设备。可以实现或利用本文描述的各种技术的一个或多个程序可以使用应用编程接口(API)、可重用的控制等等。这样的程序可以在高级面向过程或面向对象的编程语言中实现以便与计算机系统进行通信。然而,程序可以在汇编或机器语言中实现,如果期望。在任何情况下,该语言可以是编译或解释语言,并且与硬件实现进行组合。
应该理解,已经将在这一说明书中描述的许多功能单元标记为模块,以便更特别地强调它们的实现独立性。例如,模块可以被实现为包括定制VLSI电路或门阵列、现成的半导体的硬件电路,该现成的半导体例如是逻辑芯片、晶体管或其它分立部件。也可以在可编程硬件设备中实现模块,该可编程硬件设备例如是现场可编程门阵列、可编程阵列逻辑、可编程逻辑器件等等。
也可以在用于由各种类型的处理器执行的软件中实现模块。可执行代码的所标识的模块可以例如包括计算机指令的一个或多个物理或逻辑块,其可以例如被组织为对象、过程或函数。然而,所标识的模块的可执行体不需要物理地定位在一起,但是可以包括存储在不同位置中的不同指令,当被在逻辑上连接到一起时,该指令包括模块并且实现对于该模块的规定目的。
实际上,可执行代码的模块可以是单个指令或许多指令,并且可以甚至分布在几个不同的代码段上、在不同的程序当中或者遍及几个存储器设备。类似地,操作数据可以在本文中被标识和说明在模块内,并且可以被体现在任何适当的形式中且被组织在任何适当类型的数据结构内。操作数据可以作为单个数据集被收集,或者可以分布在不同的位置上,包括在不同的存储设备上,并且可以仅作为系统或网络上的电子信号而至少部分地存在。模块可以是无源的或有源的,包括可操作为执行期望功能的代理。
在整个这一说明书中对“一个实施例”或“实施例”的提及意味着结合该实施例描述的特定特征、结构或特性包括在本发明的至少一个实施例中。因此,短语“在一个实施例中”或“在实施例中”在整个这一说明书中的不同地方的出现并不一定都指代相同的实施例。
如在本文使用的,多个项目、结构元件、组合元件和/或材料可以为了方便起见而被呈现在公共列表中。然而,这些列表应该被解释为好像该列表的每一个成员被单独地识别为单独和唯一的成员一样。因而,这样的列表的单独成员不应该仅基于其在公共组中的呈现而被解释为相同列表的任何其它成员的实际等同物。此外,可以在本文参考本发明的各种实施例和示例连同其各种部件的可选形式。应该理解,这样的实施例、实例和可选形式不应该被解释为彼此的实际等效形式,而应该被考虑为本发明的单独和自主的表示。
而且,所描述的特征、结构或特性可以在一个或多个实施例中按照任何适当的方式进行组合。在下面的描述中,提供了很多特定的细节,例如材料、扣件、尺寸、长度、宽度、形状等等的示例,以便提供对本发明实施例的彻底理解。然而,相关领域中的技术人员将认识到,可以在没有一个或多个特定细节的情况下,或者在使用其它方法、部件、材料等等的情况下,来实施本发明。在其它实例中,没有详细显示和描述公知的结构、材料或操作,以便避免使本发明的方面难于理解。
尽管前述实例在一个或多个具体的应用中说明了本发明的原理,但是对本领域中的普通技术人员来说将明显的是,可以在不运用创造性能力且不偏离本发明的原理和概念的情况下进行实现的形式、使用和细节上的许多修改。因此,并不意在限制本发明,除了如下面阐述的权利要求那样。

Claims (27)

1.一种用于组织物理上行链路共享信道(PUSCH)传输的方法,包括:
在节点处生成具有如下指令的传输时间间隔(TTI)捆绑配置信息:所述指令用于在至少一个PUSCH TTI束中在50子帧时间间隔中并且在至少20个TTI中捆绑PUSCH传输用于混合自动重传请求(HARQ)过程;以及
将所述TTI捆绑配置信息传输到无线设备,以便使所述无线设备能够在50子帧时间间隔内在所述至少一个PUSCH TTI束中传输所述PUSCH,
其中每一个PUSCH TTI束包括具有12子帧TTI束重传延迟的4个连续TTI以及对于所述无线设备的多达5个HARQ重传。
2.如权利要求1所述的方法,其中,所述50子帧时间间隔是对于每一个分组的互联网协议上语音(VoIP)空中接口时延约束,所述至少20个TTI是被分配到每一个分组的TTI的最大数量,并且每一个分组具有20个TTI的VoIP分组到达速率。
3.如权利要求1所述的方法,其中,每一个TTI是无线帧的一毫秒(ms)子帧。
4.如权利要求1所述的方法,其中,所述TTI捆绑配置信息的至少一部分经由较高层无线资源控制(RRC)信令而被传输到所述无线设备。
5.如权利要求1所述的方法,其中,每一个PUSCH TTI束包括20个连续TTI以及与所述PUSCH TTI束相关联的HARQ反馈指示符或者与所述PUSCH TTI束相关联的多个中间HARQ反馈指示符,每一个HARQ反馈指示符被配置为提供对于所述PUSCH TTI束中的至少4个TTI的反馈。
6.如权利要求1所述的方法,其中,每一个PUSCH TTI束包括20个交织TTI以及与所述PUSCH TTI束相关联的HARQ反馈指示符或与所述PUSCH TTI束相关联的多个中间HARQ反馈指示符,其中,每一个交织TTI由没有位于所述PUSCH TTI束中的TTI分离,每一个HARQ反馈指示符被配置为提供对于所述PUSCH TTI束中的至少4个TTI的反馈。
7.如权利要求1所述的方法,其中,每一个PUSCH TTI束包括具有20子帧TTI束重传延迟或30子帧TTI束重传延迟的10个连续TTI。
8.如权利要求1所述的方法,其中,与初始HARQ传输相对应的所述PUSCH TTI束和与随后的HARQ重传相对应的所述PUSCH TTI束占据不同数量的TTI。
9.如权利要求1所述的方法,其中,每一个PUSCH TTI束与PUSCH传输的初始PUSCH传输或随后的HARQ重传的一个实例相关联,其中初始和随后的HARQ重传具有不同TTI束尺寸或者配置。
10.如权利要求8所述的方法,其中,与所述初始PUSCH传输相对应的所述PUSCH TTI束包括8个连续TTI,并且与HARQ重传相对应的剩余PUSCH TTI束包括具有16子帧TTI束重传延迟的4个连续TTI。
11.如权利要求1所述的方法,其中,PUSCH TTI束承载不同的冗余版本以便最大化共有信息并且提取TTI捆绑传输和重传的最大编码和分集增益。
12.如权利要求1所述的方法,进一步包括:
基于链路适应信息自适应地配置用户设备(UE)特定TTI束尺寸,其中,每一个PUSCHTTI束可以包括4、8、10、12、16或20个子帧的TTI束尺寸,并且所述TTI捆绑配置信息包括所述TTI束尺寸。
13.如权利要求1所述的方法,进一步包括:
自适应地组合至少两个混合自动重传请求(HARQ)过程,其中,每一个HARQ过程包括所述PUSCH TTI束,并且所述TTI捆绑配置信息包括对于每一个TTI束的冗余版本(RV)信息或者简单序列重复信息。
14.如权利要求1所述的方法,进一步包括:
从所述无线设备接收在50子帧时间间隔内包括所述至少一个PUSCH TTI束的PUSCH信号传输;
对来自所接收的PUSCH信号的数据进行解码;以及
基于所述TTI捆绑配置信息和所解码的数据将至少一个混合自动重传请求-确认(HARQ-ACK)反馈传输到所述无线设备。
15.至少一种非暂态机器可读存储介质,包括适合于执行以实施如权利要求1所述的方法的多条指令。
16.一种被配置用于组织物理上行链路共享信道(PUSCH)传输的节点的节点设备,包括:
处理模块,被配置为生成具有如下指令的传输时间间隔(TTI)捆绑配置信息:所述指令用于在至少一个TTI束中在52子帧时间间隔中并且在至少20个TTI中捆绑PUSCH传输用于混合自动重传请求(HARQ)过程;以及
收发机模块,被配置为将所述TTI捆绑配置信息传输到无线设备以便使所述无线设备能够在50子帧时间间隔内在所述至少一个TTI束中传输所述PUSCH,
其中,每一个TTI束包括具有12子帧TTI束重传延迟的4个连续TTI以及对于所述无线设备的多达5个HARQ重传。
17.如权利要求16所述的节点设备,其中,每一个TTI束包括20个连续TTI或20个交织TTI以及与所述TTI束相关联的HARQ反馈指示符或与所述TTI束相关联的多个中间HARQ反馈指示符,其中,每一个交织TTI由没有位于所述TTI束中的TTI分离,每一个HARQ反馈指示符被配置为提供对于所述TTI束中的至少4个TTI的反馈。
18.如权利要求16所述的节点设备,其中,每一个TTI束包括具有20子帧TTI束重传延迟或30子帧TTI束重传延迟的10个连续TTI。
19.如权利要求16所述的节点设备,其中:
所述收发机模块被进一步配置为接收在所述50子帧时间间隔内在至少一个TTI束中包括所述至少20个TTI的PUSCH信号传输;
所述处理模块被进一步配置为对来自所接收的PUSCH信号的数据进行解码;并且
所述收发机模块被进一步配置为基于所述TTI捆绑配置信息和所解码的数据将至少一个混合自动重传请求-确认(ACK)(HARQ-ACK)反馈传输到所述无线设备。
20.如权利要求16所述的节点设备,其中,所述节点选自包括下列项目的组:基站(BS)、节点B(NB)、演进型节点B(eNB)、基带单元(BBU)、远程无线头端(RRH)、远程无线设备(RRE)或远程无线单元(RRU)及其组合。
21.至少一种非暂态机器可读存储介质,包括适合于执行以实施用于物理上行链路共享信道(PUSCH)传输时间间隔(TTI)捆绑的方法的多条指令,包括:
在无线设备处从节点接收包括用于在至少20个TTI中捆绑PUSCH传输用于混合自动重传请求(HARQ)过程的指令的TTI捆绑配置信息;
捆绑多达所述至少20个TTI以便形成至少一个PUSCH TTI束;以及
在50子帧时间间隔内将多达所述至少20个TTI的所述至少一个PUSCH TTI束传输到所述节点,
其中,每一个PUSCH TTI束包括具有12子帧TTI束重传延迟的4个连续TTI以及对于所述无线设备的多达5个HARQ重传。
22.如权利要求21所述的至少一种非暂态机器可读存储介质,其中,每一个TTI束包括20个连续TTI或20个交织TTI以及与所述TTI束相关联的HARQ反馈指示符或者与所述TTI束相关联的多个中间HARQ反馈指示符,其中,每一个交织TTI由没有位于所述TTI束中的TTI分离,每一个HARQ反馈指示符被配置为提供对于所述TTI束中的至少4个TTI的反馈。
23.如权利要求21所述的至少一种非暂态机器可读存储介质,其中,每一个TTI束包括具有20子帧TTI束重传延迟或30子帧TTI束重传延迟的10个连续TTI。
24.一种被配置用于物理上行链路共享信道(PUSCH)传输时间间隔(TTI)捆绑的无线设备,包括:
收发机模块,被配置为从节点接收包括用于在至少20个TTI中捆绑PUSCH传输用于混合自动重传请求(HARQ)过程的指令的TTI捆绑配置信息;以及
处理模块,被配置为对多达所述至少20个TTI进行TTI捆绑以便形成至少一个PUSCHTTI束;
其中,所述收发机模块被进一步配置为在50子帧时间间隔内将多达所述至少20个TTI的所述至少一个PUSCH TTI束传输到所述节点。
25.如权利要求24所述的无线设备,其中,每一个PUSCH TTI束包括下列项目中的至少一个:
具有12子帧TTI束重传延迟的4个连续TTI以及多达5个HARQ重传;
20个连续TTI或20个交织TTI以及与所述TTI束相关联的HARQ反馈指示符或者与所述TTI束相关联的多个中间HARQ反馈指示符,其中,每一个交织TTI由没有位于所述TTI束中的TTI分离,每一个HARQ反馈指示符被配置为提供对于所述TTI束中的至少4个TTI的反馈;
10个连续TTI;以及
8个连续TTI。
26.如权利要求24所述的无线设备,其中,所述收发机模块进一步操作为在所述50子帧周期性时间间隔内传输被配置用于至少20个TTI的TTI捆绑的PUSCH,并且基于来自所述节点的否定确认(NACK)混合自动重传请求(HARQ)反馈来重新传输PUSCH。
27.如权利要求24所述的无线设备,其中,所述无线设备选自包括下列项目的组:用户设备(UE)和移动站(MS),并且所述无线设备包括下列项目中的至少一个:天线、触敏显示屏、扬声器、麦克风、图形处理器、应用处理器、内部存储器、非易失性存储器端口及其组合。
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