WO2019192448A1 - 基于非码本上行pusch传输的pt-rs端口指示方法、装置及基站 - Google Patents

基于非码本上行pusch传输的pt-rs端口指示方法、装置及基站 Download PDF

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WO2019192448A1
WO2019192448A1 PCT/CN2019/080925 CN2019080925W WO2019192448A1 WO 2019192448 A1 WO2019192448 A1 WO 2019192448A1 CN 2019080925 W CN2019080925 W CN 2019080925W WO 2019192448 A1 WO2019192448 A1 WO 2019192448A1
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bits
dci
dmrs
ports
srs resources
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PCT/CN2019/080925
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English (en)
French (fr)
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黄甦
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展讯通信（上海）有限公司
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Priority to US16/968,509 priority Critical patent/US11303411B2/en
Publication of WO2019192448A1 publication Critical patent/WO2019192448A1/zh
Priority to US17/688,388 priority patent/US20220190985A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a PT-RS port indication method, apparatus, and base station based on non-codebook uplink PUSCH transmission.
  • the 5G NR (New Radio) supports the uplink PUSCH (Physical Uplink Shared Channel) transmission based on the non-codebook. It is divided into the following three steps:
  • the base station configures and triggers the UE (User Equipment) to send multiple single-port SRS (Sounding Reference Signal) resources;
  • the base station uses the DCI (Downlink Control Information) to instruct the UE to use one or more of the multiple single-port SRS resources when transmitting the PUSCH;
  • DCI Downlink Control Information
  • the UE transmits the PUSCH.
  • the DCI also indicates which DMRS (Demodulation Reference Signal) ports of the PUSCH are mapped to the one or more SRS resources, in particular, if the PT-RS is configured ( Phase-Tracking Reference Signal, the base station also informs which DMRS port the PT-RS is mapped to.
  • DMRS Demodulation Reference Signal
  • the base station indicates that the SRS resource 0 and the resource 3 are used for PUSCH transmission, using DMRS port 0 and DMRS port 2, and port 0 and port 2 are mapped to SRS resource 0 and resource 3, respectively, and the DCI is also It can be indicated whether the PT-RS is mapped to DMRS port 0 or port 2.
  • the base station may also indicate the radio frequency link on the SRS resource (indicated by the PT-RS), so that when multiple SRSs of the ports configuring the same PT-RS are used to transmit the PUSCH, only A PT-RS needs to be sent, but the PT-RS needs to be sent on which DMRS port.
  • the base station configures two SRS resources for the UE and configures association with different PT-RSs (representing two SRS resources can be sent by different radio links).
  • the SRS resource maps the DMRS port 0 and port 2 of the PUSCH to the two SRS resources respectively.
  • the DCI is not required to additionally indicate the association between the PT-RS and the DMRS, because the two PT-RSs are uniquely mapped to the corresponding two DMRS ports.
  • the base station configures four SRS resources for the UE and configures association with different PT-RSs, where SRS resources 0, 2, and 3 share one PT-RS (the three SRSs need to use the same radio link).
  • SRS resource 1 uses another PT-RS (which can use different radio link with the other three SRS resources).
  • the DCI indicates that the PUSCH is transmitted using SRS resources 0 and 3, respectively, and the DMRS port 0 and port of the PUSCH are respectively used. 2 maps to these two SRS resources. Since the two SRSs share one radio link (one PT-RS), the DCI needs to additionally indicate to which DMRS port the PT-RS is associated.
  • the existing scheme adopts the PTRS-DMRS association field indication in DCI format 0_1, but the design of the domain in the DCI is given only for the single PT-RS port configuration, and the number of SRS resources is not considered for the domain. Indicate the effect of the number of bits, as shown in Table 1.
  • the PT-RS port indication method, device and base station based on the non-codebook uplink PUSCH transmission can provide an indication of the association relationship between the PT-RS port and the DMRS port under multiple PT-RS ports.
  • the present invention provides a PT-RS port indication method based on non-codebook uplink PUSCH transmission, including:
  • the DCI carries an indication bit with the same number of bits as the number of bits, and is used to indicate an association relationship between the PT-RS port and the DMRS port.
  • the determining, according to the number of SRS resources, the number of PT-RS ports, and the maximum uplink rank supported by the UE, determining the number of bits of the PTRS-DMRS association domain in the DCI to be sent includes: according to the number of SRS resources, PT-RS The number of ports, the maximum uplink rank supported by the UE, and the distribution of PT-RSs associated with the SRS resources determine the number of bits of the PTRS-DMRS association field in the DCI to be transmitted.
  • the number of the SRS resources is a number of SRS resources used for non-codebook transmission.
  • the number of the PT-RS ports is the number of PT-RS ports configured by RRC signaling or the total number of PT-RSs associated with the SRS resources.
  • the indication bit carried in the DCI is used to indicate the PT-RS and Which of the two DMRS ports is associated.
  • the determined number of bits is 2
  • one of the indication bits carried in the DCI is used to indicate the PT-RS and the PT-RS. Which one of the two DMRS ports is associated; if there are three DMRS ports to which the SRS resources are mapped to share one PT-RS, the two indication bits carried in the DCI are used to indicate the PT-RS and the Which one of the three DMRS ports is associated; if there are four DMRS ports to which the SRS resources are mapped to share one PT-RS, the two indication bits carried in the DCI are used to indicate the PT-RS and the Which of the four DMRS ports is associated.
  • the determined number of bits is 2
  • the SRS resources to which the two DMRS ports are mapped share the first PT-RS
  • the SRS resources to which the other two DMRS ports are mapped share the second PT-RS
  • One of the indication bits carried in the DCI is used to indicate which one of the two DMRS ports is associated with the first PT-RS
  • another indication bit carried in the DCI is used to indicate the second PT-RS and Which of the other two DMRS ports is associated.
  • the present invention provides a PT-RS port indication device based on non-codebook uplink PUSCH transmission, including:
  • a determining unit configured to determine, according to the number of SRS resources, the number of PT-RS ports, and the maximum uplink rank supported by the UE, the number of bits of the PTRS-DMRS associated domain in the DCI to be sent;
  • a sending unit configured to send a DCI to the UE, where the DCI carries an indication bit with the same number of bits as the number of bits, and is used to indicate an association relationship between the PT-RS port and the DMRS port.
  • the determining unit is configured to determine, according to the number of SRS resources, the number of PT-RS ports, the maximum uplink rank supported by the UE, and the distribution of PT-RSs associated with the SRS resources, determine the PTRS-DMRS association in the DCI to be sent.
  • the number of bits in the field is configured to determine, according to the number of SRS resources, the number of PT-RS ports, the maximum uplink rank supported by the UE, and the distribution of PT-RSs associated with the SRS resources. The number of bits in the field.
  • the number of the SRS resources is a number of SRS resources used for non-codebook transmission.
  • the number of the PT-RS ports is the number of PT-RS ports configured by RRC signaling or the total number of PT-RSs associated with the SRS resources.
  • the indication bit carried in the DCI is used to indicate the PT-RS and Which of the two DMRS ports is associated.
  • the determined number of bits is 2
  • one of the indication bits carried in the DCI is used to indicate the PT-RS and the PT-RS. Which one of the two DMRS ports is associated; if there are three DMRS ports to which the SRS resources are mapped to share one PT-RS, the two indication bits carried in the DCI are used to indicate the PT-RS and the Which one of the three DMRS ports is associated; if there are four DMRS ports to which the SRS resources are mapped to share one PT-RS, the two indication bits carried in the DCI are used to indicate the PT-RS and the Which of the four DMRS ports is associated.
  • the determined number of bits is 2
  • the SRS resources to which the two DMRS ports are mapped share the first PT-RS
  • the SRS resources to which the other two DMRS ports are mapped share the second PT-RS
  • One of the indication bits carried in the DCI is used to indicate which one of the two DMRS ports is associated with the first PT-RS
  • another indication bit carried in the DCI is used to indicate the second PT-RS and Which of the other two DMRS ports is associated.
  • the present invention provides a base station, where the base station includes the foregoing PT-RS port indication device based on non-codebook uplink PUSCH transmission.
  • the PT-RS port indication method, apparatus, and base station based on the non-codebook uplink PUSCH transmission determine the DCI to be sent according to the number of SRS resources, the number of PT-RS ports, and the maximum uplink rank supported by the UE.
  • the number of bits in the PTRS-DMRS association field is sent to the UE, and the DCI carries an indication bit with the same number of bits as the number of bits, and is used to indicate the association between the PT-RS port and the DMRS port, thereby enabling
  • the association relationship between the PT-RS port and the DMRS port is indicated when the SRS resources to which the multiple DMRS ports are mapped share one PT-RS.
  • 1 is a schematic diagram of an RS port mapping manner in a non-codebook uplink PUSCH transmission
  • FIG. 2 is a schematic diagram of two SRS resources used for transmitting a PUSCH being associated to different PT-RSs;
  • 3 is a schematic diagram of two SRS resources used for transmitting a PUSCH being associated to the same PT-RS;
  • FIG. 4 is a flowchart of a PT-RS port indication method based on non-codebook uplink PUSCH transmission according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a PT-RS port indication apparatus based on non-codebook uplink PUSCH transmission according to an embodiment of the present invention.
  • An embodiment of the present invention provides a PT-RS port indication method based on non-codebook uplink PUSCH transmission. As shown in FIG. 4, the method includes:
  • the base station determines, according to the number of SRS resources, the number of PT-RS ports, and the maximum uplink rank supported by the UE, the number of bits in the PTRS-DMRS association field in the DCI to be sent.
  • the number of the SRS resources is the number of SRS resources used for non-codebook transmission.
  • the number of PT-RS ports may be the number of PT-RS ports configured by RRC (Radio Resource Control) signaling, or may be the total number of PT-RSs associated with the SRS resources.
  • RRC Radio Resource Control
  • the base station sends a DCI to the UE, where the DCI carries an indication bit with the same number of bits as the number of bits, and is used to indicate a relationship between the PT-RS port and the DMRS port.
  • the PT-RS port indication method based on the non-codebook uplink PUSCH transmission determines the PTRS-DMRS association in the DCI to be sent according to the number of SRS resources, the number of PT-RS ports, and the maximum uplink rank supported by the UE.
  • the number of bits of the domain, the DCI is sent to the UE, and the DCI carries an indication bit with the same number of bits as the number of bits, and is used to indicate the association between the PT-RS port and the DMRS port, thereby enabling implementation on multiple DMRS ports.
  • the association relationship between the PT-RS port and the DMRS port is indicated when the mapped SRS resource shares one PT-RS.
  • the base station may determine, according to Table 2, the number of bits of the PTRS-DMRS association field in the DCI to be transmitted:
  • the base station may further determine, according to Table 3, the number of bits of the PTRS-DMRS association field in the DCI to be sent:
  • the base station may further determine the number of bits in the PTRS-DMRS association field in the DCI according to the number of SRS resources, the number of PT-RS ports, the maximum uplink rank supported by the UE, and the distribution of PT-RSs associated with the SRS resources.
  • the base station may determine, according to Table 4, the number of bits of the PTRS-DMRS association field in the DCI to be transmitted:
  • the indication bit carried in the DCI It is used to indicate which one of the two DMRS ports is associated with the PT-RS (otherwise, the value of the bit does not affect the association relationship between the PT-RS and the DMRS port).
  • Table 2 Table 3, and Table 4, when the number of bits given in the table is 2, if there are one PT-RS shared by the SRS resources to which two DMRS ports are mapped, one of the DCIs carried in the DCI The indication bit is used to indicate which of the two DMRS ports the PT-RS is associated with;
  • one of the indication bits carried in the DCI is used to indicate The first PT-RS is associated with one of the two DMRS ports, and the other one of the indication bits carried in the DCI is used to indicate which of the other two DMRS ports the second PT-RS is associated with.
  • the two indication bits carried in the DCI are used to indicate which one of the three DMRS ports is associated with the PT-RS;
  • the two indication bits carried in the DCI are used to indicate which one of the four DMRS ports is associated with the PT-RS.
  • the embodiment of the present invention further provides a PT-RS port indication device based on non-codebook uplink PUSCH transmission. As shown in FIG. 5, the device includes:
  • the determining unit 11 is configured to determine, according to the number of SRS resources, the number of PT-RS ports, and the maximum uplink rank supported by the UE, the number of bits in the PTRS-DMRS association domain in the DCI to be sent;
  • the sending unit 12 is configured to send a DCI to the UE, where the DCI carries an indication bit with the same number of bits as the number of bits, and is used to indicate an association relationship between the PT-RS port and the DMRS port.
  • the determining unit 11 is configured to determine, according to the number of SRS resources, the number of PT-RS ports, the maximum uplink rank supported by the UE, and the distribution of PT-RSs associated with the SRS resources, the PTRS-DMRS in the DCI to be sent.
  • the number of bits in the associated domain is configured to determine, according to the number of SRS resources, the number of PT-RS ports, the maximum uplink rank supported by the UE, and the distribution of PT-RSs associated with the SRS resources, the PTRS-DMRS in the DCI to be sent. The number of bits in the associated domain.
  • the number of the SRS resources is a number of SRS resources used for non-codebook transmission.
  • the number of the PT-RS ports is the number of PT-RS ports configured by RRC signaling or the total number of PT-RSs associated with the SRS resources.
  • the indication bit carried in the DCI is used to indicate the PT-RS and Which of the two DMRS ports is associated.
  • the determined number of bits is 2
  • one of the indication bits carried in the DCI is used to indicate the PT-RS and the PT-RS. Which one of the two DMRS ports is associated; if there are three DMRS ports to which the SRS resources are mapped to share one PT-RS, the two indication bits carried in the DCI are used to indicate the PT-RS and the Which one of the three DMRS ports is associated; if there are four DMRS ports to which the SRS resources are mapped to share one PT-RS, the two indication bits carried in the DCI are used to indicate the PT-RS and the Which of the four DMRS ports is associated.
  • the determined number of bits is 2
  • the SRS resources to which the two DMRS ports are mapped share the first PT-RS
  • the SRS resources to which the other two DMRS ports are mapped share the second PT-RS
  • One of the indication bits carried in the DCI is used to indicate which one of the two DMRS ports is associated with the first PT-RS
  • another indication bit carried in the DCI is used to indicate the second PT-RS and Which of the other two DMRS ports is associated.
  • the PT-RS port indication device determines the PTRS-DMRS association in the DCI to be transmitted according to the number of SRS resources, the number of PT-RS ports, and the maximum uplink rank supported by the UE.
  • the number of bits of the domain, the DCI is sent to the UE, and the DCI carries an indication bit with the same number of bits as the number of bits, and is used to indicate the association between the PT-RS port and the DMRS port, thereby enabling implementation on multiple DMRS ports.
  • the association relationship between the PT-RS port and the DMRS port is indicated when the mapped SRS resource shares one PT-RS.
  • the device in this embodiment may be used to implement the technical solution of the foregoing method embodiment, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the embodiment of the present invention further provides a base station, where the base station includes the foregoing PT-RS port indication device based on non-codebook uplink PUSCH transmission.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Abstract

本发明提供一种基于非码本上行PUSCH传输的PT-RS端口指示方法、装置及基站。所述方法包括：根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数；向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系。本发明能够实现多个PT-RS端口下对PT-RS端口与DMRS端口的关联关系的指示。

Description

基于非码本上行PUSCH传输的PT-RS端口指示方法、装置及基站
本申请要求于2018年04月03日提交中国专利局、申请号为201810290173.X、发明名称为“基于非码本上行PUSCH传输的PT-RS端口指示方法、装置及基站”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域，尤其涉及一种基于非码本上行PUSCH传输的PT-RS端口指示方法、装置及基站。
背景技术
5G NR(New Radio，新空口)支持基于非码本的上行PUSCH(Physical Uplink Shared Channel，物理上行共享信道)传输，分为如下三步：
(1)基站配置并触发UE(User Equipment，用户设备)发送多个单端口SRS(Sounding Reference Signal，探测参考信号)资源；
(2)基站通过DCI(Downlink Control Information，下行控制信息)指示UE发送PUSCH时使用所述多个单端口SRS资源中的一个或多个；
(3)UE发送PUSCH。
在所述步骤(2)中，DCI还会指示PUSCH的哪些DMRS(Demodulation Reference Signal，解调参考信号)端口映射到所述一个或多个SRS资源上，特别的，如果配置了PT-RS(Phase-Tracking Reference Signal，相位跟踪参考信号)，基站还会告知PT-RS映射到哪个或者哪几个DMRS端口上。
如图1所示，基站指示所述SRS资源0和资源3用于PUSCH传 输，采用DMRS端口0和DMRS端口2，并且端口0和端口2分别映射到SRS资源0和资源3，这时DCI还可以指示PT-RS映射到DMRS端口0还是端口2。
另外，基站在配置多个SRS资源时，还可以指示SRS资源上的射频链路(通过PT-RS来指示)，这样配置相同PT-RS的端口的多个SRS被用于发送PUSCH时，只需要发送一个PT-RS，但是该PT-RS在哪个DMRS端口上发送需要指示。
如图2所示，基站为UE配置了两个SRS资源，并配置关联到不同的PT-RS(代表两个SRS资源可以用不同的射频链路发送)，此时DCI指示发送PUSCH使用两个SRS资源，分别把PUSCH的DMRS端口0和端口2映射到这两个SRS资源上。此时不需要DCI再额外指示PT-RS与DMRS的关联关系，因为两个PT-RS唯一映射到相应的两个DMRS端口上。
如图3所示，基站为UE配置四个SRS资源，并配置关联到不同的PT-RS，其中SRS资源0、2、3共用一个PT-RS(这三个SRS需要使用相同的射频链路发送)，SRS资源1使用另一个PT-RS(可以与另外三个SRS资源采用不同的射频链路)，此时DCI指示发送PUSCH使用SRS资源0和3，分别把PUSCH的DMRS端口0和端口2映射到这两个SRS资源上。由于这两个SRS共享一个射频链路(一个PT-RS)，此时DCI需要额外指示PT-RS关联到哪个DMRS端口。
现有的方案采用DCI format 0_1中PTRS-DMRS关联域(association)指示，但是只针对单PT-RS端口配置下给出了DCI中该域的设计，同时没有考虑到SRS资源个数对该域指示比特数的影响，如表1所示。
表1
Value DMRS端口
0 0
1 1
2 2
3 3
发明内容
本发明提供的基于非码本上行PUSCH传输的PT-RS端口指示方法、装置及基站，能够实现多个PT-RS端口下对PT-RS端口与DMRS端口的关联关系的指示。
第一方面，本发明提供一种基于非码本上行PUSCH传输的PT-RS端口指示方法，包括：
根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数；
向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系。
可选地，所述根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数包括：根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数以及SRS资源关联的PT-RS的分布确定待发送DCI中PTRS-DMRS关联域的比特数。
可选地，所述SRS资源个数为用于基于非码本传输的SRS资源个数。
可选地，所述PT-RS端口个数为RRC信令配置的PT-RS端口个 数或者所述SRS资源关联的PT-RS总数。
可选地，当所确定的比特数为1时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的所述指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联。
可选地，当所确定的比特数为2时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的其中一个指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联；若存在三个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述三个DMRS端口中的哪一个关联；若存在四个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述四个DMRS端口中的哪一个关联。
可选地，当所确定的比特数为2时，若存在其中两个DMRS端口映射到的SRS资源共用第一PT-RS且另外两个DMRS端口映射到的SRS资源共用第二PT-RS，所述DCI中携带的其中一个指示比特位用于指示第一PT-RS与其中两个DMRS端口中的哪一个关联，所述DCI中携带的另外一个指示比特位用于指示第二PT-RS与另外两个DMRS端口中的哪一个关联。
第二方面，本发明提供一种基于非码本上行PUSCH传输的PT-RS端口指示装置，包括：
确定单元，用于根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数；
发送单元，用于向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系。
可选地，所述确定单元，用于根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数以及SRS资源关联的PT-RS的分布确定 待发送DCI中PTRS-DMRS关联域的比特数。
可选地，所述SRS资源个数为用于基于非码本传输的SRS资源个数。
可选地，所述PT-RS端口个数为RRC信令配置的PT-RS端口个数或者所述SRS资源关联的PT-RS总数。
可选地，当所确定的比特数为1时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的所述指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联。
可选地，当所确定的比特数为2时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的其中一个指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联；若存在三个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述三个DMRS端口中的哪一个关联；若存在四个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述四个DMRS端口中的哪一个关联。
可选地，当所确定的比特数为2时，若存在其中两个DMRS端口映射到的SRS资源共用第一PT-RS且另外两个DMRS端口映射到的SRS资源共用第二PT-RS，所述DCI中携带的其中一个指示比特位用于指示第一PT-RS与其中两个DMRS端口中的哪一个关联，所述DCI中携带的另外一个指示比特位用于指示第二PT-RS与另外两个DMRS端口中的哪一个关联。
第三方面，本发明提供一种基站，所述基站包括上述基于非码本上行PUSCH传输的PT-RS端口指示装置。
本发明实施例提供的基于非码本上行PUSCH传输的PT-RS端口指示方法、装置及基站，根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特 数，向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系，从而能够实现在多个DMRS端口映射到的SRS资源共用一个PT-RS时对PT-RS端口与DMRS端口的关联关系进行指示。
附图说明
图1为基于非码本上行PUSCH传输中的RS端口映射方式示意图；
图2为发送PUSCH使用的两个SRS资源关联到不同的PT-RS的示意图；
图3为发送PUSCH使用的两个SRS资源关联到相同的PT-RS的示意图；
图4为本发明一实施例基于非码本上行PUSCH传输的PT-RS端口指示方法的流程图；
图5为本发明一实施例基于非码本上行PUSCH传输的PT-RS端口指示装置的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例提供一种基于非码本上行PUSCH传输的PT-RS端口指示方法，如图4所示，所述方法包括：
S11、基站根据SRS资源个数、PT-RS端口个数、UE支持的最 大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数。
其中，所述SRS资源个数为用于基于非码本传输的SRS资源个数。
所述PT-RS端口个数可以是RRC(Radio Resource Control，无线资源控制)信令配置的PT-RS端口个数，也可以是所述SRS资源关联的PT-RS总数。
S12、基站向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系。
本发明实施例提供的基于非码本上行PUSCH传输的PT-RS端口指示方法，根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数，向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系，从而能够实现在多个DMRS端口映射到的SRS资源共用一个PT-RS时对PT-RS端口与DMRS端口的关联关系进行指示。
具体地，基站可以按照表2确定待发送DCI中PTRS-DMRS关联域的比特数：
表2
Figure PCTCN2019080925-appb-000001
Figure PCTCN2019080925-appb-000002
可选地，基站还可以按照表3确定待发送DCI中PTRS-DMRS关联域的比特数：
表3
Figure PCTCN2019080925-appb-000003
Figure PCTCN2019080925-appb-000004
进一步地，基站还可以根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数以及SRS资源关联的PT-RS的分布确定DCI中PTRS-DMRS关联域的比特数。
具体地，基站可以按照表4确定待发送DCI中PTRS-DMRS关联域的比特数：
表4
Figure PCTCN2019080925-appb-000005
Figure PCTCN2019080925-appb-000006
Figure PCTCN2019080925-appb-000007
如表2、表3和表4所示，当确定的比特数为0时，实际发送的PT-RS与调度的DMRS端口一一对应。
如表2、表3和表4所示，当确定的比特数为1时，若存在某两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的所述指示比特位用于指示所述PT-RS与这两个DMRS端口中的哪一个关联(否则该比特取值不影响PT-RS与DMRS端口的关联关系)。
如表2、表3和表4所示，当表中给出的比特数为2时，若存在某两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的其中一个指示比特位用于指示所述PT-RS与这两个DMRS端口中的哪一个关联；
若存在其中两个DMRS端口映射到的SRS资源共用第一PT-RS且另外两个DMRS端口映射到的SRS资源共用第二PT-RS，所述DCI中携带的其中一个指示比特位用于指示第一PT-RS与其中两个DMRS端口中的哪一个关联，所述DCI中携带的另外一个指示比特位用于指示第二PT-RS与另外两个DMRS端口中的哪一个关联。
若存在某三个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述三个 DMRS端口中的哪一个关联；
若存在某四个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述四个DMRS端口中的哪一个关联。
本发明实施例还提供一种基于非码本上行PUSCH传输的PT-RS端口指示装置，如图5所示，所述装置包括：
确定单元11，用于根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数；
发送单元12，用于向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系。
可选地，所述确定单元11，用于根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数以及SRS资源关联的PT-RS的分布确定待发送DCI中PTRS-DMRS关联域的比特数。
可选地，所述SRS资源个数为用于基于非码本传输的SRS资源个数。
可选地，所述PT-RS端口个数为RRC信令配置的PT-RS端口个数或者所述SRS资源关联的PT-RS总数。
可选地，当所确定的比特数为1时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的所述指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联。
可选地，当所确定的比特数为2时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的其中一个指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联；若存在三个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述三个DMRS端口中的哪一个关联；若存在四个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述四个DMRS端口中的哪一个关联。
可选地，当所确定的比特数为2时，若存在其中两个DMRS端口映射到的SRS资源共用第一PT-RS且另外两个DMRS端口映射到的SRS资源共用第二PT-RS，所述DCI中携带的其中一个指示比特位用于指示第一PT-RS与其中两个DMRS端口中的哪一个关联，所述DCI中携带的另外一个指示比特位用于指示第二PT-RS与另外两个DMRS端口中的哪一个关联。
本发明实施例提供的基于非码本上行PUSCH传输的PT-RS端口指示装置，根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数，向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系，从而能够实现在多个DMRS端口映射到的SRS资源共用一个PT-RS时对PT-RS端口与DMRS端口的关联关系进行指示。
本实施例的装置，可以用于执行上述方法实施例的技术方案，其实现原理和技术效果类似，此处不再赘述。
本发明实施例还提供一种基站，所述基站包括上述基于非码本上行PUSCH传输的PT-RS端口指示装置。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求的保护范围为准。

Claims (15)

  1. 一种基于非码本上行PUSCH传输的PT-RS端口指示方法，其特征在于，包括：
    根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数；
    向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系。
  2. 根据权利要求1所述的方法，其特征在于，所述根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数包括：根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数以及SRS资源关联的PT-RS的分布确定待发送DCI中PTRS-DMRS关联域的比特数。
  3. 根据权利要求1或2所述的方法，其特征在于，所述SRS资源个数为用于基于非码本传输的SRS资源个数。
  4. 根据权利要求1或2所述的方法，其特征在于，所述PT-RS端口个数为RRC信令配置的PT-RS端口个数或者所述SRS资源关联的PT-RS总数。
  5. 根据权利要求1或2所述的方法，其特征在于，当所确定的比特数为1时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的所述指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联。
  6. 根据权利要求1或2所述的方法，其特征在于，当所确定的比特数为2时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的其中一个指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联；若存在三个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述三个DMRS端口中的哪一 个关联；若存在四个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述四个DMRS端口中的哪一个关联。
  7. 根据权利要求1或2所述的方法，其特征在于，当所确定的比特数为2时，若存在其中两个DMRS端口映射到的SRS资源共用第一PT-RS且另外两个DMRS端口映射到的SRS资源共用第二PT-RS，所述DCI中携带的其中一个指示比特位用于指示第一PT-RS与其中两个DMRS端口中的哪一个关联，所述DCI中携带的另外一个指示比特位用于指示第二PT-RS与另外两个DMRS端口中的哪一个关联。
  8. 一种基于非码本上行PUSCH传输的PT-RS端口指示装置，其特征在于，包括：
    确定单元，用于根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数确定待发送DCI中PTRS-DMRS关联域的比特数；
    发送单元，用于向UE发送DCI，所述DCI中携带与所述比特数相等位数的指示比特位，用于指示PT-RS端口与DMRS端口的关联关系。
  9. 根据权利要求8所述的装置，其特征在于，所述确定单元，用于根据SRS资源个数、PT-RS端口个数、UE支持的最大上行秩数以及SRS资源关联的PT-RS的分布确定待发送DCI中PTRS-DMRS关联域的比特数。
  10. 根据权利要求8或9所述的装置，其特征在于，所述SRS资源个数为用于基于非码本传输的SRS资源个数。
  11. 根据权利要求8或9所述的装置，其特征在于，所述PT-RS端口个数为RRC信令配置的PT-RS端口个数或者所述SRS资源关联的PT-RS总数。
  12. 根据权利要求8或9所述的装置，其特征在于，当所确定的 比特数为1时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的所述指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联。
  13. 根据权利要求8或9所述的装置，其特征在于，当所确定的比特数为2时，若存在两个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的其中一个指示比特位用于指示所述PT-RS与所述两个DMRS端口中的哪一个关联；若存在三个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述三个DMRS端口中的哪一个关联；若存在四个DMRS端口映射到的SRS资源共用一个PT-RS，所述DCI中携带的两个指示比特位用于指示所述PT-RS与所述四个DMRS端口中的哪一个关联。
  14. 根据权利要求8或9所述的装置，其特征在于，当所确定的比特数为2时，若存在其中两个DMRS端口映射到的SRS资源共用第一PT-RS且另外两个DMRS端口映射到的SRS资源共用第二PT-RS，所述DCI中携带的其中一个指示比特位用于指示第一PT-RS与其中两个DMRS端口中的哪一个关联，所述DCI中携带的另外一个指示比特位用于指示第二PT-RS与另外两个DMRS端口中的哪一个关联。
  15. 一种基站，其特征在于，所述基站包括如权利要求8至14中任一项所述的基于非码本上行PUSCH传输的PT-RS端口指示装置。
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