CN113114432B - 一种针对pusch dtx的调度方法 - Google Patents

一种针对pusch dtx的调度方法 Download PDF

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CN113114432B
CN113114432B CN202110355733.7A CN202110355733A CN113114432B CN 113114432 B CN113114432 B CN 113114432B CN 202110355733 A CN202110355733 A CN 202110355733A CN 113114432 B CN113114432 B CN 113114432B
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CN113114432A (zh
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王芸
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Sichuan Innogence Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0061—Error detection codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1835—Buffer management
    • H04L1/1845—Combining techniques, e.g. code combining
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

本发明公开了一种针对PUSCH DTX的调度方法，包括以下方法步骤：步骤1：终端与基站进行连接，连接成功后，基站调度终端上行数据PUSCH的同时向终端发送新传的UL DCI指示；步骤2：终端根据新传的UL DCI指示进行PUSCH的传输；步骤3：基站分析判断接收到的终端数据进行解析处理，若基站MAC收到物理层L1反馈的PUSCH CRC结果为ERROR时，则要求终端进行重传处理，并且基站内部指示物理层L1进行上行数据解析；步骤4：基站根据CRC错误类型来进行差别重传处理。本发明通过对CRC错误类型进行判断，采用不同重传处理方式，提高效率的同时避免了无效HARQ合并造成的空口资源浪费。

Description

一种针对PUSCH DTX的调度方法
技术领域
本发明涉及无线通信系统领域，尤其涉及一种针对PUSCH DTX的调度方法。
背景技术
基站对上行共享数据信道(后续简称PUSCH)的传输处理中，当MAC收到物理层L1反馈的PUSCH CRC结果为ERROR时，会进行对应的重传调度处理，由于当前只对CRC对或错进行区分，没有区分CRC错的原因，这里存在优化处理空间。
当CRC错是因为物理层L1未解析到PUSCH信号，全是噪声时，可以认为当前的PUSCH检测结果为DTX，而目前对于DTX的处理仍然按照CRC错进行处理，即MAC按照重传流程进行指示重传，使物理层L1进行重传HARQ通道合并，获取重传增益。若PUSCH初传时的检测反馈为DTX，此时L1初传的HARQ通道中存放的为噪声数据，则后续的重传均无法合并成功，无法获得重传增益，浪费了空口资源。
专利（申请号为CN201310229642.4）公开了上行混合自动重传请求反馈方法、装置和系统，该方法包括：eNB接收UE发送的PUSCH传输数据块，并进行CRC校验；在完成CRC校验后，所述eNB在调度所述PUSCH传输数据块的下一次重传子帧的对应下行子帧发送ePDCCH，指示所述UE不再为HARQ进程分配新的PUSCH资源。该专利在进行CRC校验后进行指示重传，并未对CRC错误类型进行判断，易造成空口资源浪费。
发明内容
本发明的目的在于克服现有技术的不足，提供一种针对PUSCH DTX的调度方法。
本发明的目的是通过以下技术方案来实现的：
一种针对PUSCH DTX的调度方法，包括以下方法步骤：
步骤1：终端与基站进行连接，连接成功后，基站调度终端上行数据PUSCH的同时向终端发送新传的UL DCI指示；
步骤2：终端根据新传的UL DCI指示进行PUSCH的传输；
步骤3：基站分析判断接收到的终端数据进行解析处理；
步骤4：基站根据CRC错误类型来进行差别重传处理。
所述步骤3具体包括：若基站MAC收到物理层L1反馈的PUSCH CRC结果为ERROR时，则要求终端进行重传处理，并且基站内部指示物理层L1进行上行数据解析。
所述步骤4中CRC错误类型包括：
物理层L1未解析到PUSCH信号，即物理层解析到PUSCH数据引起的CRC错误；
PUSCH初传时的检测反馈为DTX，即物理层未解析到PUSCH数据引起的CRC错误。
所述步骤4中的差别重传处理具体包括：
若物理层L1未解析到PUSCH信号，则基站进行正常重传，基站采用不同于初传时的冗余版本号，指示给终端重传的UL DCI，基站MAC指示基站物理层L1对接收到的重传数据进行HARQ通道合并；
物理层L1检测到初传的PUSCH反馈为DTX时，则基站采用初传相同的冗余版本号RV=0指示终端重传的UL DCI，基站MAC指示基站物理层L1清空HARQ通道数据，不进行HARQ通道合并，而进行重新接收数据。
本发明的有益效果：当检测到初传的PUSCH反馈为DTX时，MAC只是物理层L1清除HARQ通道接收的数据信息，重新接收PUSCH，并且基站通过DCI中的冗余版本号RV=0指示空口进行重传，避免了无效harq合并造成的空口资源浪费。
附图说明
图1是本发明的流程框图；
图2是本发明的实施模块顺序图。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图说明本发明的具体实施方式。
本实施例中，如图1所示，一种针对PUSCH DTX的调度方法，包括以下方法步骤：
步骤1：终端与基站进行连接，连接成功后，基站调度终端上行数据PUSCH的同时向终端发送新传的UL DCI指示；
步骤2：终端根据新传的UL DCI指示进行PUSCH的传输；
步骤3：基站分析判断接收到的终端数据进行解析处理；
步骤4：基站根据CRC错误类型来进行差别重传处理。
所述步骤3具体包括：若基站MAC收到物理层L1反馈的PUSCH CRC结果为ERROR时，则要求终端进行重传处理，并且基站内部指示物理层L1进行上行数据解析。
所述步骤4中CRC错误类型包括：
物理层L1未解析到PUSCH信号，即物理层解析到PUSCH数据引起的CRC错误；
PUSCH初传时的检测反馈为DTX，即物理层未解析到PUSCH数据引起的CRC错误。
所述步骤4中的差别重传处理具体包括：
若物理层L1未解析到PUSCH信号，则基站进行正常重传，基站采用不同于初传时的冗余版本号，指示给终端重传的UL DCI，基站MAC指示基站物理层L1对接收到的重传数据进行HARQ通道合并；
物理层L1检测到初传的PUSCH反馈为DTX时，则基站采用初传相同的冗余版本号RV=0指示终端重传的UL DCI，基站MAC指示基站物理层L1清空HARQ通道数据，不进行HARQ通道合并，而进行重新接收数据。
方法实施具体流程为：
1.终端和基站连接成功；
2.当基站开始调度终端上行数据PUSCH时，向终端发送新传的UL DCI指示；
3.终端会根据新传的UL DCI指示进行PUSCH的传输；
4.基站根据接收到的终端数据结果来确定下一步的处理；
5.如果基站检测到本次接收到的数据是错误的，即是说CRC校验是错误的，则会要求终端进行重传处理，基站内部也会指示物理层L1去进行对应的上行数据解析；
6.在基站指示物理层L1去解析重传数据的过程中，会根据新传的CRC错误类型来进行差别处理；
7.如果是物理层解析到了PUSCH数据引起的CRC错误，则基站进行正常重传，基站采用不同的冗余版本号，指示给终端重传的UL DCI，基站MAC指示基站物理层对接收到的重传数据进行HARQ合并；
8.如果是物理层未解析到PUSCH数据引起的CRC错误（DTX），则基站采用初传相同的冗余版本号RV=0指示终端重传的UL DCI，基站MAC指示基站物理层清空HARQ通道数据，不进行HARQ合并，而进行重新接收数据。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护的范围由所附的权利要求书及其等效物界定。

Claims (1)

1.一种针对PUSCH DTX的调度方法，其特征在于，包括以下方法步骤：
步骤1：终端与基站进行连接，连接成功后，基站调度终端上行数据PUSCH的同时向终端发送新传的UL DCI指示；
步骤2：终端根据新传的UL DCI指示进行PUSCH的传输；
步骤3：基站分析判断接收到的终端数据并进行解析处理；若基站MAC收到物理层L1反馈的PUSCH CRC结果为ERROR时，则要求终端进行重传处理，并且基站内部指示物理层L1进行上行数据解析；
步骤4：基站根据CRC错误类型来进行差别重传处理；
若物理层解析到PUSCH数据引起的CRC错误，则基站进行正常重传，基站采用不同的冗余版本号，指示给终端重传的UL DCI，基站MAC指示基站物理层对接收到的重传数据进行HARQ合并；
若物理层未解析到PUSCH数据引起的CRC错误，即PUSCH初传时的检测反馈为DTX，则基站采用初传相同的冗余版本号RV=0指示终端重传的UL DCI，基站MAC指示基站物理层清空HARQ通道数据，不进行HARQ合并，而进行重新接收数据。
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