CN109379172B - Phase tracking reference signal port configuration method, base station and readable storage medium - Google Patents
Phase tracking reference signal port configuration method, base station and readable storage medium Download PDFInfo
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- CN109379172B CN109379172B CN201710684061.8A CN201710684061A CN109379172B CN 109379172 B CN109379172 B CN 109379172B CN 201710684061 A CN201710684061 A CN 201710684061A CN 109379172 B CN109379172 B CN 109379172B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
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Abstract
A phase tracking reference signal port configuration method, a base station and a readable storage medium are provided, wherein the configuration method comprises the following steps: configuring and indicating a DMRS port for downlink data transmission and a downlink QCL packet corresponding to the DMRS port for downlink data transmission, generating first configuration information and issuing the first configuration information to a user terminal, wherein: each downlink QCL group has a downlink phase tracking reference signal port which is in one-to-one correspondence and is associated with the downlink QCL group; configuring DMRS ports for indicating uplink data transmission and uplink CQL groups corresponding to the DMRS ports for performing the uplink data transmission, generating second configuration information and issuing the second configuration information to the user terminal, wherein: there is a one-to-one correspondence and association of upstream phase tracking reference signal ports for each upstream QCL packet. The scheme can reduce the signaling overhead when the DMRS packet is indicated.
Description
Technical Field
The present invention relates to the field of wireless communications, and in particular, to a phase tracking reference signal port configuration method, a base station, and a readable storage medium.
Background
The Phase Tracking Reference Signal (PT-RS) is a Reference Signal (RS) newly introduced by a 5G New air interface (New Radio, NR) and is used for estimating Phase noise caused by clock instability in high-frequency communication.
One PT-RS port is associated with one demodulation Reference Signal (DMRS) port group. The clocks of the DMRS port group are homologous, and the phase noise estimated by the PT-RS ports can be used to compensate for the phase noise on all DMRS ports in the group.
In the related art, a grouping scheme of DMRS is indicated through dynamic signaling. However, in configuring the DMRS packet, the DMRS packet needs to be performed based on a clock-homologous packet and a Quasi-Co-Location (QCL). When the DMRS packet information is sent to the user terminal, the dynamic signaling overhead is large.
Disclosure of Invention
The embodiment of the invention solves the problem of reducing the signaling overhead when indicating the DMRS packet.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for configuring a phase tracking reference signal port, including: configuring and indicating a DMRS port for downlink data transmission and a downlink QCL packet corresponding to the DMRS port for downlink data transmission, generating first configuration information and issuing the first configuration information to a user terminal, wherein: each downlink QCL group has a downlink phase tracking reference signal port which is in one-to-one correspondence and is associated with the downlink QCL group; configuring DMRS ports for indicating uplink data transmission and uplink CQL groups corresponding to the DMRS ports for performing the uplink data transmission, generating second configuration information and issuing the second configuration information to the user terminal, wherein: there is a one-to-one correspondence and association of upstream phase tracking reference signal ports for each upstream QCL packet.
Optionally, after the first configuration information is sent to the user terminal, the method further includes: and transmitting a downlink phase tracking reference signal to the user terminal by using the downlink phase tracking reference signal port.
Optionally, the issuing the first configuration information to the user terminal includes: and sending the first configuration information to the user terminal by adopting a downlink control message.
Optionally, the port number corresponding to the downlink phase tracking reference signal port is: and the minimum value of the labels of all DMRS ports in the downlink QCL groups in one-to-one correspondence.
Optionally, after the second configuration information is sent to the user terminal, the method further includes: and receiving an uplink phase tracking reference signal sent by the user terminal through the uplink phase tracking reference signal port.
Optionally, the issuing the second configuration information to the user terminal includes: and sending the second configuration information to the user terminal by adopting a downlink control message.
Optionally, when the uplink data transmission is codebook-based uplink data transmission, the downlink control message further includes: the upstream phase tracks the port number of the reference signal port.
Optionally, when the uplink data transmission is based on a non-codebook, the port number corresponding to the uplink phase tracking reference signal port is: and the minimum value of all DMRS port labels in the uplink QCL groups in a one-to-one correspondence mode.
Optionally, when the user equipment performs the data transmission based on a non-codebook, the downlink control message further includes: and indicating the precoding used for uplink data transmission of the user terminal to be the precoding corresponding to the uplink sounding reference signal resources, wherein the uplink sounding reference signal resources correspond to the uplink CQL groups one by one.
An embodiment of the present invention further provides a base station, including: the device comprises a first configuration unit, a second configuration unit and a third configuration unit, wherein the first configuration unit is used for configuring and indicating a DMRS port for downlink data transmission and a downlink QCL group corresponding to the DMRS port for downlink data transmission to generate first configuration information; a first sending unit, configured to send the first configuration information to a user terminal; the second configuration unit is used for configuring a DMRS port for indicating uplink data transmission and an uplink CQL packet corresponding to the DMRS port for performing the uplink data transmission, and generating second configuration information; and the second sending unit is used for sending the second configuration information to the user terminal.
Optionally, the base station further includes: a third sending unit, configured to send a downlink phase tracking reference signal to the user equipment using the downlink phase tracking reference signal port.
Optionally, the first sending unit is configured to send the first configuration information to the user terminal by using a downlink control message.
Optionally, the port number corresponding to the downlink phase tracking reference signal port is: and the minimum value of the labels of all DMRS ports in the downlink QCL groups in one-to-one correspondence.
Optionally, the base station further includes: a receiving unit, configured to receive an uplink phase tracking reference signal sent by the user terminal through the uplink phase tracking reference signal port.
Optionally, the second sending unit is configured to send the second configuration information to the user terminal by using a downlink control message.
Optionally, when the uplink data transmission is codebook-based uplink data transmission, the downlink control message further includes: the upstream phase tracks the port number of the reference signal port.
Optionally, when the uplink data transmission is based on a non-codebook, the port number corresponding to the uplink phase tracking reference signal port is: and the minimum value of all DMRS port labels in the uplink QCL groups in a one-to-one correspondence mode.
Optionally, when the user equipment performs the data transmission based on a non-codebook, the downlink control message further includes: and indicating the precoding used for uplink data transmission of the user terminal to be the precoding corresponding to the uplink sounding reference signal resources, wherein the uplink sounding reference signal resources correspond to the uplink CQL groups one by one.
The embodiment of the present invention further provides a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method for configuring a phase tracking reference signal port according to any one of the above methods is performed.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores computer instructions, and the computer instructions execute, when running, any of the steps of the phase tracking reference signal port configuration method described above.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
when the configuration indicates the DMRS ports for downlink data transmission and the corresponding downlink QCL groups, each downlink QCL group is configured to have a downlink phase and group reference signal port which is in one-to-one correspondence and is associated, so that the downlink phase tracking reference signal ports and the number of the downlink phase tracking reference signal ports do not need to be indicated to a user terminal. When the configuration indicates the DMRS ports for uplink data transmission and the corresponding uplink QCL groups, each uplink QCL group is configured to have uplink phase tracking reference signal ports which are in one-to-one correspondence and associated, so that the uplink phase tracking reference signal ports and the number of the uplink phase tracking reference signal ports do not need to be indicated to a user terminal. Therefore, the scheme can reduce the signaling overhead during DMRS grouping.
Drawings
Fig. 1 is a flowchart of a phase tracking reference signal port configuration method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a base station in the embodiment of the present invention.
Detailed Description
In the related art, a grouping scheme of DMRS is indicated through dynamic signaling. However, in configuring the DMRS packet, the DMRS packet needs to be performed based on a clock-homologous packet and a Quasi-Co-Location (QCL). When the DMRS packet information is sent to the user terminal, the dynamic signaling overhead is large.
As known in practical applications, DMRSs in different QCL packets are usually from different Transmission Reference Points (TRPs), and clocks used for different TRPs may be different. DMRSs within different QCL packets may come from different panels (panels) within the same TRP, and the different panels may use separate clocks or may use the same clock. When different panels use the same clock and different transmit beams, it is likely that there are different sources of receive circuitry on the receive side and one receive circuit can only receive signals on one QCL packet.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
An embodiment of the present invention provides a method for configuring a phase tracking reference signal port, which is described in detail below with reference to fig. 1 through specific steps.
Step S101, configuring and indicating a DMRS port for downlink data transmission and a downlink QCL group corresponding to the DMRS port for downlink data transmission, and generating first configuration information.
In a specific implementation, the base station may pre-configure a DMRS port for performing downlink data transmission, and configure a downlink QCL packet corresponding to the DMRS port for performing downlink data transmission. The base station may generate the first configuration information according to the configured DMRS port for performing downlink data and the corresponding downlink QCL packet.
For example, the base station configures, in advance, a DMRS port for performing downlink data transmission as follows: DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. And the base station carries out QCL grouping on the 4 DMRS ports, the DMRS port 0 and the DMRS port 1 are divided into one downlink QCL group, and the DMRS port 2 and the DMRS port 3 are divided into another QCL group.
And step S102, the first configuration information is sent to the user terminal.
In a specific implementation, after the base station generates the first configuration information, the base station may send the first configuration information to the user terminal, and after receiving the first configuration information, the user terminal may obtain the number of downlink QCL packets configured by the base station according to the first configuration information.
In a specific implementation, the base station may send the first configuration Information to the ue through a Downlink Control Information (DCI). After receiving the downlink control information, the user terminal may obtain the first configuration information from the downlink control information, so as to obtain the DMRS port and the downlink QCL packet configured by the base station for downlink data transmission, and further obtain the downlink PT-RS port corresponding to the downlink QCL packet.
In a specific implementation, each downlink QCL packet is set to have a one-to-one corresponding and associated downlink PT-RS port. Therefore, after knowing the number of downlink QCL groups configured by the base station, the user terminal can know the number of downlink PT-RS ports configured by the base station.
For example, the base station divides 4 DMRS ports into two downlink QCL packets. When knowing that the number of the downlink QCL groups is 2, the user terminal can know that the base station configures two downlink PT-RS ports. One of the two downlink PT-RS ports is associated with a downlink QCL packet comprising a DMRS port 0 and a DMRS port 1, and the other downlink PT-RS port is associated with a downlink QCL packet comprising a DMRS port 2 and a DMRS port 3.
In specific implementation, the base station and the user terminal may agree in advance on port numbers of the downlink PT-RS ports. In the embodiment of the invention, the base station and the user terminal agree in advance that the port number of the downlink PT-RS port is the minimum value in the DMRS port labels in the associated downlink QCL grouping.
For example, the first downlink QCL packet includes DMRS port 0 and DMRS port 1, and the port number of the downlink PT-RS port associated with the first downlink QCL packet is 0. The second downlink QCL packet includes DMRS port 2 and DMRS port 3, and the port number of the downlink PT-RS port associated with the second downlink QCL packet is 2.
It is understood that in practical applications, the port number of the downstream PT-RS port may also be determined by other methods. The base station may agree with the user terminal in advance for an acquisition rule of the downlink PT-RS port, and after receiving the first configuration information issued by the base station, the user terminal may determine the port number of the corresponding downlink PT-RS port according to the downlink QCL packet therein. Therefore, the base station does not need to carry the port number of the downlink PT-RS port in the first configuration information.
In a specific implementation, after the base station issues the first configuration information to the user equipment, the base station may send a downlink phase tracking reference signal to the user equipment using the configured PT-RS port.
Step S103, configuring DMRS ports for indicating uplink data transmission and uplink CQL groups of the DMRS ports for performing the uplink data transmission, and generating second configuration information.
In specific implementation, the base station may configure a DMRS port used by the user terminal for uplink data transmission, and configure an uplink QCL packet corresponding to the DMRS port used by the user terminal for uplink data transmission. And the base station generates second configuration information according to the DMRS port which is configured for the user terminal and used for uplink data transmission and the corresponding uplink QCL group.
For example, the base station may configure the DMRS port used by the user terminal for uplink data transmission as: DMRS port 0, DMRS port 1, DMRS port 2, and DMRS port 3. The base station divides the 4 DMRS ports for uplink data transmission into 2 uplink QCL groups, wherein the first uplink QCL group comprises a DMRS port 0 and a DMRS port 1, and the second uplink QCL group comprises a DMRS port 2 and a DMRS port 3.
Step S104, the second configuration information is sent to the user terminal.
In a specific implementation, after the base station generates the second configuration information, the base station may issue the second configuration information to the user terminal. After receiving the second configuration information, the user terminal can obtain the DMRS port to be used when performing uplink data transmission and the number of uplink QCL groups configured by the base station.
In a specific implementation, the base station may also issue the second configuration information to the user terminal through the downlink control information. After receiving the downlink control information, the user terminal may obtain the second configuration information from the downlink control information, so as to obtain the DMRS port and the uplink QCL packet configured by the base station for uplink data transmission, and further obtain the PT-RS port corresponding to the uplink QCL packet.
In a specific implementation, each upstream QCL packet is set to have a one-to-one correspondence and associated upstream PT-RS port. Therefore, after knowing the number of uplink QCL packets configured by the base station, the user terminal can know the number of uplink PT-RS ports configured by the base station, that is, the user terminal can know the number of uplink PT-RS ports used when the user terminal performs uplink data transmission.
For example, the base station divides 4 DMRS ports into two uplink QCL packets. When knowing that the number of the uplink QCL groups is 2, the user terminal can know that patterns of two uplink PT-RS ports need to be sent when uplink data transmission is carried out. One of the two uplink PT-RS ports is associated with an uplink QCL packet comprising a DMRS port 0 and a DMRS port 1, and the other uplink PT-RS port is associated with an uplink QCL packet comprising a DMRS port 2 and a DMRS port 3.
In a specific implementation, after the base station issues the second configuration information to the user terminal, the user terminal may send an uplink phase tracking reference signal to the base station using the uplink PT-RS port. At this time, the base station may receive an uplink phase tracking reference signal sent by the user terminal via the uplink PT-RS port.
In the embodiment of the present invention, steps S101 to S102 and steps S103 to S104 do not have a logical sequence, or steps S103 to S104 may be executed first and then steps S101 to S102, or steps S101 to S102 and steps S103 to S104 may be executed simultaneously. The base station may send the first configuration information and the second configuration information to the user equipment in the same downlink control information.
In a specific implementation, for uplink non-codebook-based data transmission, the base station may pre-agree with the user equipment on a port number of an uplink PT-RS port. In the embodiment of the invention, the base station and the user terminal can pre-determine the port number of the uplink PT-RS port as the minimum value in the DMRS port label in the uplink QCL packet.
For example, for uplink non-codebook based data transmission, the first uplink QCL packet includes DMRS port 0 and DMRS port 1, and the port number of the uplink PT-RS port associated with the first uplink QCL packet is 0. The second uplink QCL packet includes DMRS port 2 and DMRS port 3, and the port number of the uplink PT-RS port associated with the second uplink QCL packet is 2.
It is understood that, in practical applications, for uplink non-codebook-based data transmission, the port number of the uplink PT-RS port may also be determined by other methods. The base station may agree with the user terminal in advance for an acquisition rule of the uplink PT-RS port, and after receiving the second configuration information issued by the base station, the user terminal may determine the port number of the corresponding uplink PT-RS port according to the uplink QCL packet therein. Therefore, the base station does not need to carry the port number of the uplink PT-RS port in the second configuration information.
In a specific implementation, for uplink codebook-based data transmission, the port number of the uplink PT-RS port may be carried in the downlink control message.
For example, in the downlink control message, the port numbers of the uplink PT-RS ports associated with the DMRS port 0 and the DRMS port 1 are indicated to be 0, and the port numbers of the uplink PT-RS ports associated with the DMRS port 2 and the DRMS port 3 are indicated to be 2.
In specific implementation, for uplink non-codebook-based data transmission, the base station may additionally indicate, to the user terminal, a precoding matrix corresponding to an uplink Sounding Reference Signal (SRS) resource. And configuring precoding matrixes on SRS resources corresponding to each uplink QCL group one by one.
For example, the first upstream QCL packet includes DMRS port 0 and DMRS port 1, and the second upstream QCL packet includes DMRS port 2 and DMRS port 3. In the downlink control signaling, the base station additionally configures precoding matrices on uplink SRS resources for the user terminal, where the precoding matrices are the precoding matrix corresponding to SRS1 and the precoding matrix corresponding to SRS 2. The first uplink QCL group corresponds to SRS1, and the second uplink QCL group corresponds to SRS2, so that when the user terminal sends uplink data through the uplink PT-RS port corresponding to the first uplink QCL group, the used precoding matrix is the precoding matrix corresponding to SRS 1; when the uplink data is sent through the uplink PT-RS port corresponding to the second uplink QCL packet, the used precoding matrix is the precoding matrix corresponding to the SRS 2.
As known in practical applications, DMRSs within the same QCL packet generally need to use the same clock to support coherent transmission. Therefore, in most application scenarios, it is feasible to equate DMRS QCL packets with DMRS clock homology packets. At this time, the base station only needs to configure the QCL packet without additionally indicating whether the DMRS ports are clock-homologous.
Therefore, in the embodiment of the present invention, when the DMRS ports indicating downlink data transmission and the corresponding downlink QCL packets are configured, each downlink QCL packet is configured to have a downlink phase tracking reference signal port in one-to-one correspondence and associated with the downlink phase tracking reference signal port, so that it is not necessary to indicate the downlink phase tracking reference signal ports and the number of the downlink phase tracking reference signal ports to the user equipment. When the configuration indicates the DMRS ports for uplink data transmission and the corresponding uplink QCL groups, each uplink QCL group is configured to have uplink phase tracking reference signal ports which are in one-to-one correspondence and associated, so that the uplink phase tracking reference signal ports and the number of the uplink phase tracking reference signal ports do not need to be indicated to a user terminal. Therefore, the scheme provided by the embodiment of the invention can reduce the signaling overhead during DMRS grouping.
Referring to fig. 2, an embodiment of the present invention provides a base station 20, including: a first configuration unit 201, a first sending unit 202, a second configuration unit 203, and a second sending unit 204, wherein:
a first configuration unit 201, configured to configure a DMRS port for instructing downlink data transmission and a downlink QCL packet corresponding to the DMRS port for performing downlink data transmission, and generate first configuration information;
a first sending unit 202, configured to send the first configuration information to a user terminal;
a second configuration unit 203, configured to configure a DMRS port indicating uplink data transmission and an uplink CQL packet corresponding to the DMRS port performing uplink data transmission, to generate second configuration information;
a second sending unit 204, configured to send the second configuration information to the user terminal.
In a specific implementation, the base station may further include: a third sending unit, configured to send a downlink phase tracking reference signal to the user equipment using the downlink phase tracking reference signal port.
In a specific implementation, the first sending unit 202 may be configured to send the first configuration information to the ue by using a downlink control message.
In a specific implementation, the port number corresponding to the downlink phase tracking reference signal port may be: and the minimum value of the labels of all DMRS ports in the downlink QCL groups in one-to-one correspondence.
In a specific implementation, the base station may further include: a receiving unit, configured to receive an uplink phase tracking reference signal sent by the user terminal through the uplink phase tracking reference signal port.
In a specific implementation, the second sending unit 204 may be configured to send the second configuration information to the user equipment by using a downlink control message.
In a specific implementation, when the uplink data transmission is codebook-based uplink data transmission, the downlink control message may further include: the upstream phase tracks the port number of the reference signal port.
In a specific implementation, when the uplink data transmission is based on a non-codebook, the port number corresponding to the uplink phase tracking reference signal port may be: and the minimum value of all DMRS port labels in the uplink QCL groups in a one-to-one correspondence mode.
In a specific implementation, when the user equipment performs the data transmission based on a non-codebook, the downlink control message may further include: and indicating the precoding used for uplink data transmission of the user terminal to be the precoding corresponding to the uplink sounding reference signal resources, wherein the uplink sounding reference signal resources correspond to the uplink CQL groups one by one.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer instruction is stored, and when the computer instruction runs, the step of performing the phase tracking reference signal port configuration method provided in any of the above embodiments of the present invention is executed, which is not described again.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores a computer instruction, and the computer instruction executes, when running, the steps of the method for configuring a phase tracking reference signal port according to any of the embodiments of the present invention, which are not described again.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by instructing the relevant hardware through a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (16)
1. A method for configuring a phase tracking reference signal port, comprising:
configuring and indicating a DMRS port for downlink data transmission and a downlink QCL packet corresponding to the DMRS port for downlink data transmission, generating first configuration information and issuing the first configuration information to a user terminal, wherein: each downlink QCL group has a downlink phase tracking reference signal port which is in one-to-one correspondence and is associated with the downlink QCL group;
configuring and indicating a DMRS port for uplink data transmission and an uplink QCL packet corresponding to the DMRS port for uplink data transmission, generating second configuration information and issuing the second configuration information to the user terminal, wherein: each uplink QCL group has an uplink phase tracking reference signal port which is in one-to-one correspondence and is associated with the uplink QCL group;
when the uplink data transmission is based on a non-codebook, the port number corresponding to the uplink phase tracking reference signal port is: the minimum value of all DMRS port labels in the uplink QCL groups in a one-to-one correspondence manner; the downlink control message further includes: and indicating the precoding used for uplink data transmission of the user terminal to be the precoding corresponding to the uplink sounding reference signal resources, wherein the uplink sounding reference signal resources correspond to the uplink QCL groups one by one.
2. The method for configuring ports of phase tracking reference signals according to claim 1, further comprising, after transmitting the first configuration information to the user terminal:
and transmitting a downlink phase tracking reference signal to the user terminal by using the downlink phase tracking reference signal port.
3. The method of claim 1, wherein the sending the first configuration information to a user terminal comprises:
and sending the first configuration information to the user terminal by adopting a downlink control message.
4. The method according to claim 1, wherein the port number corresponding to the downlink phase tracking reference signal port is: and the minimum value of the labels of all DMRS ports in the downlink QCL groups in one-to-one correspondence.
5. The method for configuring a phase tracking reference signal port according to claim 1, wherein after the second configuration information is sent to the ue, the method further comprises:
and receiving an uplink phase tracking reference signal sent by the user terminal through the uplink phase tracking reference signal port.
6. The method of claim 1, wherein the sending the second configuration information to the ue comprises:
and sending the second configuration information to the user terminal by adopting a downlink control message.
7. The method for configuring ports of phase tracking reference signal according to claim 6, wherein when the uplink data transmission is codebook-based uplink data transmission, the downlink control message further comprises: the upstream phase tracks the port number of the reference signal port.
8. A base station, comprising:
the device comprises a first configuration unit, a second configuration unit and a third configuration unit, wherein the first configuration unit is used for configuring and indicating a DMRS port for downlink data transmission and a downlink QCL group corresponding to the DMRS port for downlink data transmission to generate first configuration information; a first sending unit, configured to send the first configuration information to a user terminal;
the second configuration unit is used for configuring and indicating the DMRS port for uplink data transmission and the uplink QCL group corresponding to the DMRS port for uplink data transmission to generate second configuration information; a second sending unit, configured to send the second configuration information to the user terminal;
when the uplink data transmission is based on a non-codebook, the port number corresponding to the uplink phase tracking reference signal port is: the minimum value of all DMRS port labels in the uplink QCL groups in a one-to-one correspondence manner; the downlink control message further includes: and indicating the precoding used for uplink data transmission of the user terminal to be the precoding corresponding to the uplink sounding reference signal resources, wherein the uplink sounding reference signal resources correspond to the uplink QCL groups one by one.
9. The base station of claim 8, further comprising: a third sending unit, configured to send a downlink phase tracking reference signal to the user equipment using the downlink phase tracking reference signal port.
10. The base station of claim 8, wherein the first sending unit is configured to send the first configuration information to the ue using a downlink control message.
11. The base station of claim 8, wherein the port number corresponding to the downlink phase tracking reference signal port is: and the minimum value of the labels of all DMRS ports in the downlink QCL groups in one-to-one correspondence.
12. The base station of claim 8, further comprising: a receiving unit, configured to receive an uplink phase tracking reference signal sent by the user terminal through the uplink phase tracking reference signal port.
13. The base station of claim 8, wherein the second sending unit is configured to send the second configuration information to the ue using a downlink control message.
14. The base station of claim 13, wherein when the uplink data transmission is codebook-based uplink data transmission, the downlink control message further comprises: the upstream phase tracks the port number of the reference signal port.
15. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the phase tracking reference signal port configuration method according to any one of claims 1 to 7.
16. A base station comprising a memory and a processor, the memory having stored thereon a computer program, wherein the computer program when executed by the processor performs the steps of the phase tracking reference signal port configuration method of any one of claims 1 to 7.
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| CN111818628B (en) * | 2019-04-10 | 2022-04-29 | 大唐移动通信设备有限公司 | Data transmission method and device |
| CN111294189B (en) * | 2019-07-24 | 2023-07-11 | 展讯半导体(南京)有限公司 | PT-RS mapping and demapping methods and devices, base station and terminal |
| WO2021081964A1 (en) * | 2019-10-31 | 2021-05-06 | 华为技术有限公司 | Method for configuring transmission port of a downlink reference signal, and communication apparatus |
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