CN112449413A - Power indication method, determination method, device, network side equipment and terminal - Google Patents

Power indication method, determination method, device, network side equipment and terminal Download PDF

Info

Publication number
CN112449413A
CN112449413A CN201910806669.2A CN201910806669A CN112449413A CN 112449413 A CN112449413 A CN 112449413A CN 201910806669 A CN201910806669 A CN 201910806669A CN 112449413 A CN112449413 A CN 112449413A
Authority
CN
China
Prior art keywords
power
dmrs
ratio
dci
per
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910806669.2A
Other languages
Chinese (zh)
Other versions
CN112449413B (en
Inventor
倪吉庆
邵泽才
周伟
边森
王桂珍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Original Assignee
China Mobile Communications Group Co Ltd
China Mobile Communications Ltd Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Mobile Communications Group Co Ltd, China Mobile Communications Ltd Research Institute filed Critical China Mobile Communications Group Co Ltd
Priority to CN201910806669.2A priority Critical patent/CN112449413B/en
Publication of CN112449413A publication Critical patent/CN112449413A/en
Application granted granted Critical
Publication of CN112449413B publication Critical patent/CN112449413B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a power indication method, a determination method, a device, a network side device and a terminal, wherein the method comprises the following steps: sending Downlink Control Information (DCI), wherein the DCI is used for dynamically indicating the ratio of the first power to the second power; the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of a demodulation reference signal (DMRS); therefore, the power of each RE of the PDSCH and the power of each RE of the DMRS can be configured more flexibly, and the performance of data transmission is improved.

Description

Power indication method, determination method, device, network side equipment and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a power indication method, a power determination device, a network side device, and a terminal.
Background
In the prior art, a base station sends a downlink shared data channel including a reference signal and a data channel, and the channel estimated based on the reference signal is used for data demodulation. At present, the ratio of PDSCH (Physical Downlink Shared Channel) power per RE (Resource Element) to DMRS (Demodulation Reference Signal) power per RE is related to the number of DMRS CDM groups with data (code division multiplexing groups occupied by DMRS), as shown in table 1.
TABLE 1 ratio of PDSCH per RE Power to DMRS per RE Power
Figure BDA0002183867160000011
If the number of DMRS CDM groups with data is determined, the ratio of PDSCH per RE power to DM-RS per RE power is determined. Specifically, the number of DMRS CDM groups with data may be indicated by a DMRS port function indication field in DCI (Downlink Control Information); as shown in table 2, the number of DMRS ports and the number of DMRS CDM groups(s) without data are dynamically indicated by 5 bits.
TABLE 2 DMRS type 2 with maximum 1 symbol
Figure BDA0002183867160000021
At present, the ratio of PDSCH per RE power to DM-RS per RE power is tightly coupled to the number of DMRS CDM group(s) without data, that is, the ratio of PDSCH per RE power to DM-RS per RE power is determined by the number of DMRS CDM group(s) without data, and is mainly used for supporting the transparent transmission of MU-MIMO (Multi-User Multiple-Input Multiple-Output).
As can be seen from table 1 and table 2, when the DMRS port is 1, if the number of DMRS CDM group(s) without data is 1, the per-RE power of the PDSCH is the same as the per-RE power of the DM-RS; if the number of DMRS CDM group(s) without data is 2, the PDSCH per RE power is half of the DM-RS per RE power. Thus, if the power of DMRS per RE relative to PDSCH per RE is to be increased, additional DMRS CDM group(s) without data needs to be configured, i.e., additional time-frequency resources are occupied. The effect of this is that, although the power of DMRS per RE is increased relative to PDSCH per RE, the extra resource will cause the code rate of data to be reduced and the coding gain to be lost, so that the DMRS power increase cannot improve the performance of data transmission, especially for the users at the cell edge.
In addition, when the number of DMRS ports is large, specifically, as shown in table 2, DMRS type 2 has the largest symbol that can be allocated to 1, and the number of DMRS ports is 5, at this time, one user needs to occupy 3 DMRS CDM groups, that is, the power of DMRS per RE relative to PDSCH per RE is fixed to be three times. Specifically, when the signal-to-noise ratio is high, in some scenarios, the power configured by the DMRS may cause power loss, and appropriate power adjustment may be considered.
To sum up, the ratio of the PDSCH per RE power to the DM-RS per RE power is determined by the number of the parameters DMRS CDM group(s) without data, and cannot be adjusted according to the related scene.
Disclosure of Invention
Embodiments of the present invention provide a power indication method, a power determination device, a network side device, and a terminal, so as to solve a problem in the prior art that a ratio of PDSCH per RE power to DM-RS per RE power cannot be adjusted according to a related scenario.
In order to solve the above problem, an embodiment of the present invention provides a power indication method, applied to a network side device, including:
sending Downlink Control Information (DCI), wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
Wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS Code Division Multiplexing (CDM) groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
The embodiment of the invention also provides a power determination method, which is applied to a terminal and comprises the following steps:
receiving Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
Wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
The embodiment of the present invention further provides a power indication apparatus, which is applied to a network side device, and includes:
a sending module, configured to send downlink control information DCI, where the DCI is used to dynamically indicate a ratio of a first power to a second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
Wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
An embodiment of the present invention further provides a network side device, including a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:
sending Downlink Control Information (DCI), wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
Wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS Code Division Multiplexing (CDM) groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
The embodiment of the present invention further provides a network side device, which includes a memory, a processor, and a program stored in the memory and capable of running on the processor, and the processor implements the power indication method as described above when executing the program.
The embodiment of the invention also provides a power determining device, which is applied to a terminal and comprises the following steps:
a receiving module, configured to receive downlink control information DCI sent by a network side device, where the DCI is used to dynamically indicate a ratio of a first power to a second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
Wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
An embodiment of the present invention further provides a terminal, including a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:
receiving Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
Wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
The embodiment of the present invention further provides a terminal, which includes a memory, a processor, and a program stored in the memory and capable of running on the processor, and the processor implements the power determination method described above when executing the program.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the power indication method as described above; alternatively, the program implements the steps in the power determination method as described above when executed by a processor.
The technical scheme of the invention at least has the following beneficial effects:
in the power indication method, the determination method, the device, the network side equipment and the terminal of the embodiment of the invention, the ratio of the power per RE of the PDSCH to the power per RE of the DMRS is dynamically indicated through the DCI, so that the power per RE of the PDSCH and the power per RE of the DMRS can be more flexibly configured, and the performance of data transmission is improved.
Drawings
FIG. 1 is a schematic diagram illustrating steps of a power indication method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating steps of a power determination method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power indicating device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a power determining apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a power indication method, applied to a network side device, including:
step 11, sending downlink control information DCI, where the DCI is used to dynamically indicate a ratio of a first power to a second power; the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
The embodiment of the invention dynamically indicates the ratio of the power of each RE of the PDSCH to the power of each RE of the DMRS through the DCI; for example, when the number of streams is large, the DMRS is fixed to transmit with large power, and the power of the DMRS can be reduced and the power loss can be reduced in consideration of the high signal-to-noise ratio; for another example, when the channel changes rapidly, the power of the DMSR is appropriately increased, and the performance of data transmission is improved; therefore, the DMRS power can be improved, extra DMRS CDM groups are not occupied, and the coverage enhancement of cell edge users is realized.
As an optional embodiment, the DCI includes: a power ratio indication field to indicate a ratio of the first power to the second power.
And a function field (namely a power ratio indication field) is newly added in the DCI, so that the dynamic indication of the ratio of the PDSCH per RE power to the DMRS per RE power is realized.
Optionally, the ratio of the first power to the second power is configured independently by the power ratio indication domain. That is, the conventional method of determining the ratio of PDSCH per RE power to DMRS per RE power according to the number of DMRS CDM group(s) without data is not applicable, i.e., table 1 is not valid any more. Specifically, for example, the power ratio value indication field occupies 2 bits and has a value of 2. The ratio was determined to be-1.76 dB by Table 3. It is finally determined that the ratio of PDSCH per RE to DMRS per RE power is-1.76 dB. The number of the specific occupied DMRS CDM groups is as follows: DMRS port indication domain determination.
Table 3 power ratio value indicating ratio of domain configuration (2 bits)
Figure BDA0002183867160000081
Optionally, the DCI further includes: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS Code Division Multiplexing (CDM) groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
In other words, the number of DMRS CDM groups indicated by the power ratio indication field and the DMRS port indication field jointly indicates the ratio of PDSCH per RE power to DMRS per RE power.
For example, if the DMRS port indication field in the DCI occupies 5 bits and has a value of 0, the newly added power ratio indication field occupies 2 bits and has a value of 3. As can be seen from table 2, the DMRS port index is 0, that is, single stream transmission, and the number of DMRS CDM group(s) without data is 1, then the ratio of PDSCH per RE power to DM-RS per RE power preliminarily determined according to the number of DMRS CDM group(s) without data is 0 dB; and then the ratio of the PDSCH per RE power to the DMRS per RE power determined according to the power ratio indication domain and the table 3 is-3 dB. The terminal finally determines that the ratio of the PDSCH per RE power to the DM-RS per RE power is-3 dB and only one DMRS CDM group is occupied. This approach takes into account the parameter values of the DMRS CDM group(s) without data.
Optionally, the method for dynamically indicating the power ratio provided in the embodiment of the present invention is applicable to a case when the number of DMRS CDM groups(s) without data is 1. When the number of DMRS CDM groups(s) without data is 2 or 3, the method is no longer applicable. When the number of DMRS CDM group(s) without data is 1, the ratio of the PDSCH per RE power to the DMRS per RE power which is preliminarily determined is 1, and then the ratio of the PDSCH per RE power to the DM-RS per RE power can be dynamically determined through the power ratio indication domain.
As another optional embodiment, the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
In other words, the existing dynamic indication fields (i.e., DMRS port indication fields) are multiplexed to enable dynamic indication of the ratio of PDSCH per RE power to DMRS per RE power.
For example, as shown in table 2, when two codewords are configured, the DMRS ports are 5 or 6, occupying 3 DMRS CDM groups. Currently, only 2 values of the DMRS port indication field are occupied, and dynamic configuration of the power ratio is realized in consideration of multiplexing reserved values, as shown in table 4. Table 4 shows the ratio of PDSCH per RE power to DM-RS per RE power for implementing dynamic indication independent configuration according to the DMRS port indication field.
Table 4 multiplexing DMRS port indication fields to enable dynamic indication of a ratio of a first power to a second power
Figure BDA0002183867160000101
According to table 4, the ratio of PDSCH per RE power to DM-RS per RE power ranges from-4.77, 0, -1.76, and-3.
In summary, the above embodiments of the present invention dynamically indicate the ratio of the PDSCH per RE power to the DMRS per RE power through the DCI, so that the ratio of the PDSCH per RE power to the DMRS per RE power can be configured more flexibly, thereby improving the performance of data transmission.
As shown in fig. 2, an embodiment of the present invention further provides a power determining method, which is applied to a terminal, and includes:
step 21, receiving downlink control information DCI sent by a network side device, where the DCI is used to dynamically indicate a ratio of a first power to a second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
The embodiment of the invention dynamically indicates the ratio of the power of each RE of the PDSCH to the power of each RE of the DMRS through the DCI; for example, when the number of streams is large, the DMRS is fixed to transmit with large power, and the power of the DMRS can be reduced and the power loss can be reduced in consideration of the high signal-to-noise ratio; for another example, when the channel changes rapidly, the power of the DMSR is appropriately increased, and the performance of data transmission is improved; therefore, the DMRS power can be improved, extra DMRS CDM groups are not occupied, and the coverage enhancement of cell edge users is realized.
As an optional embodiment, the DCI includes: a power ratio indication field to indicate a ratio of the first power to the second power.
And a function field (namely a power ratio indication field) is newly added in the DCI, so that the dynamic indication of the ratio of the PDSCH per RE power to the DMRS per RE power is realized.
Optionally, the ratio of the first power to the second power is configured independently by the power ratio indication domain. That is, the conventional method of determining the ratio of PDSCH per RE power to DMRS per RE power according to the number of DMRS CDM group(s) without data is not applicable, i.e., table 1 is not valid any more. Specifically, for example, the power ratio value indication field occupies 2 bits and has a value of 2. The ratio was determined to be-1.76 dB by Table 3. It is finally determined that the ratio of PDSCH per RE to DMRS per RE power is-1.76 dB. The number of the specific occupied DMRS CDM groups is as follows: DMRS port indication domain determination.
Optionally, the DCI further includes: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
In other words, the number of DMRS CDM groups indicated by the power ratio indication field and the DMRS port indication field jointly indicates the ratio of PDSCH per RE power to DMRS per RE power.
For example, if the DMRS port indication field in the DCI occupies 5 bits and has a value of 0, the newly added power ratio indication field occupies 2 bits and has a value of 3. As can be seen from table 2, the DMRS port index is 0, that is, single stream transmission, and the number of DMRS CDM group(s) without data is 1, then the ratio of PDSCH per RE power to DM-RS per RE power preliminarily determined according to the number of DMRS CDM group(s) without data is 0 dB; and then the ratio of the PDSCH per RE power to the DMRS per RE power determined according to the power ratio indication domain and the table 3 is-3 dB. The terminal finally determines that the ratio of the PDSCH per RE power to the DM-RS per RE power is-3 dB and only one DMRS CDM group is occupied. This approach takes into account the parameter values of the DMRS CDM group(s) without data.
Optionally, the method for dynamically indicating the power ratio provided in the embodiment of the present invention is applicable to a case when the number of DMRS CDM groups(s) without data is 1. When the number of DMRS CDM groups(s) without data is 2 or 3, the method is no longer applicable. When the number of DMRS CDM group(s) without data is 1, the ratio of the PDSCH per RE power to the DMRS per RE power which is preliminarily determined is 1, and then the ratio of the PDSCH per RE power to the DM-RS per RE power can be dynamically determined through the power ratio indication domain.
As another optional embodiment, the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
In other words, the existing dynamic indication fields (i.e., DMRS port indication fields) are multiplexed to enable dynamic indication of the ratio of PDSCH per RE power to DMRS per RE power.
For example, as shown in table 2, when two codewords are configured, the DMRS ports are 5 or 6, occupying 3 DMRS CDM groups. Currently, only 2 values of the DMRS port indication field are occupied, and dynamic configuration of the power ratio is realized in consideration of multiplexing reserved values, as shown in table 4. Table 4 shows the ratio of PDSCH per RE power to DM-RS per RE power for implementing dynamic indication independent configuration according to the DMRS port indication field. According to table 4, the ratio of PDSCH per RE power to DM-RS per RE power ranges from-4.77, 0, -1.76, and-3.
In summary, the above embodiments of the present invention dynamically indicate the ratio of the PDSCH per RE power to the DMRS per RE power through the DCI, so that the PDSCH per RE power and the DMRS per RE power can be configured more flexibly, thereby improving the performance of data transmission.
As shown in fig. 3, an embodiment of the present invention further provides a power indication apparatus, applied to a network side device, including:
a sending module 31, configured to send downlink control information DCI, where the DCI is used to dynamically indicate a ratio of a first power to a second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Optionally, in the foregoing embodiment of the present invention, the DCI includes: a power ratio indication field to indicate a ratio of the first power to the second power.
Optionally, in the foregoing embodiment of the present invention, the DCI further includes: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Optionally, in the foregoing embodiment of the present invention, the DCI includes: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
In summary, the above embodiments of the present invention dynamically indicate the ratio of the PDSCH per RE power to the DMRS per RE power through the DCI, so that the PDSCH per RE power and the DMRS per RE power can be configured more flexibly, thereby improving the performance of data transmission.
It should be noted that the power indication apparatus provided in the embodiments of the present invention is an apparatus capable of executing the power indication method, and all embodiments of the power indication method are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 4, an embodiment of the present invention further provides a network side device, which includes a processor 400 and a transceiver 410, where the transceiver 410 is controlled by the processor 400 to receive and transmit data, and the processor 400 is configured to perform the following operations:
sending Downlink Control Information (DCI), wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Optionally, in the foregoing embodiment of the present invention, the DCI includes: a power ratio indication field to indicate a ratio of the first power to the second power.
Optionally, in the foregoing embodiment of the present invention, the DCI further includes: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS Code Division Multiplexing (CDM) groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Optionally, in the foregoing embodiment of the present invention, the DCI includes: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
In summary, the above embodiments of the present invention dynamically indicate the ratio of the PDSCH per RE power to the DMRS per RE power through the DCI, so that the PDSCH per RE power and the DMRS per RE power can be configured more flexibly, thereby improving the performance of data transmission.
It should be noted that, the network side device provided in the embodiment of the present invention is a network side device capable of executing the power indication method, and all embodiments of the power indication method are applicable to the network side device and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a network-side device, which includes a memory, a processor, and a computer program that is stored in the memory and is executable on the processor, where the processor implements each process in the above-described power indication method embodiment when executing the program, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-mentioned power indication method embodiment, and can achieve the same technical effect, and for avoiding repetition, details are not described here again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As shown in fig. 5, an embodiment of the present invention further provides a power determining apparatus, which is applied to a terminal, and includes:
a receiving module 51, configured to receive downlink control information DCI sent by a network side device, where the DCI is used to dynamically indicate a ratio of a first power to a second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Optionally, in the foregoing embodiment of the present invention, the DCI includes: a power ratio indication field to indicate a ratio of the first power to the second power.
Optionally, in the foregoing embodiment of the present invention, the DCI further includes: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Optionally, in the foregoing embodiment of the present invention, the DCI includes: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
In summary, the above embodiments of the present invention dynamically indicate the ratio of the PDSCH per RE power to the DMRS per RE power through the DCI, so that the PDSCH per RE power and the DMRS per RE power can be configured more flexibly, thereby improving the performance of data transmission.
It should be noted that the power determining apparatus provided in the embodiment of the present invention is an apparatus capable of executing the power determining method, and all embodiments of the power determining method are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 6, an embodiment of the present invention further provides a terminal, which includes a processor 600 and a transceiver 610, and the terminal further includes a user interface 620, where the transceiver 610 receives and transmits data under the control of the processor 600, and the processor 600 is configured to perform the following operations:
receiving Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
Optionally, in the foregoing embodiment of the present invention, the DCI includes: a power ratio indication field to indicate a ratio of the first power to the second power.
Optionally, in the foregoing embodiment of the present invention, the DCI further includes: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
Optionally, in the foregoing embodiment of the present invention, the DCI includes: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
In summary, the above embodiments of the present invention dynamically indicate the ratio of the PDSCH per RE power to the DMRS per RE power through the DCI, so that the PDSCH per RE power and the DMRS per RE power can be configured more flexibly, thereby improving the performance of data transmission.
It should be noted that, the terminal provided in the embodiments of the present invention is a terminal capable of executing the power determining method, and all embodiments of the power determining method are applicable to the terminal, and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a terminal, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements each process in the above-described power determination method embodiment when executing the program, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-described power determining method embodiment, and can achieve the same technical effect, and for avoiding repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (21)

1. A power indication method is applied to a network side device, and is characterized by comprising the following steps:
sending Downlink Control Information (DCI), wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
2. The method of claim 1, wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
3. The method of claim 2, wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS Code Division Multiplexing (CDM) groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
4. The method of claim 1, wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
5. A power determination method applied to a terminal is characterized by comprising the following steps:
receiving Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
6. The method of claim 5, wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
7. The method of claim 6,
the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
8. The method of claim 5, wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
9. A power indicating device applied to a network side device, comprising:
a sending module, configured to send downlink control information DCI, where the DCI is used to dynamically indicate a ratio of a first power to a second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
10. A network side device comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, wherein the processor is configured to:
sending Downlink Control Information (DCI), wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
11. The network-side device of claim 10, wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
12. The network-side device of claim 11, wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS Code Division Multiplexing (CDM) groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
13. The network-side device of claim 10, wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
14. A network side device comprises a memory, a processor and a program which is stored on the memory and can run on the processor; wherein the processor, when executing the program, implements the power indication method of any of claims 1-4.
15. A power determining apparatus applied to a terminal, comprising:
a receiving module, configured to receive downlink control information DCI sent by a network side device, where the DCI is used to dynamically indicate a ratio of a first power to a second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
16. A terminal comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, characterized in that the processor is adapted to:
receiving Downlink Control Information (DCI) sent by network side equipment, wherein the DCI is used for dynamically indicating the ratio of the first power to the second power;
the first power is the power of each resource element RE of a Physical Downlink Shared Channel (PDSCH); the second power is the power per RE of the demodulation reference signal DMRS.
17. The terminal of claim 16, wherein the DCI comprises: a power ratio indication field to indicate a ratio of the first power to the second power.
18. The terminal of claim 17, wherein the DCI further comprises: the DMRS port indication domain is used for indicating the number of DMRS ports and DMRS CDM groups;
wherein the power ratio indication field and DMRS port indication field jointly indicate a ratio of the first power to the second power.
19. The terminal of claim 16, wherein the DCI comprises: and the DMRS port indication domain is used for indicating the DMRS ports, the number of the DMRS CDM groups and the ratio of the first power to the second power.
20. A terminal comprising a memory, a processor, and a program stored on the memory and executable on the processor; characterized in that the processor, when executing the program, implements the power determination method according to any of claims 5-8.
21. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the power indication method according to any one of claims 1-4; alternatively, the program when executed by a processor implements the steps in the power determination method as claimed in any one of claims 5-8.
CN201910806669.2A 2019-08-29 2019-08-29 Power indication method, power determination device, network equipment and terminal Active CN112449413B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910806669.2A CN112449413B (en) 2019-08-29 2019-08-29 Power indication method, power determination device, network equipment and terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910806669.2A CN112449413B (en) 2019-08-29 2019-08-29 Power indication method, power determination device, network equipment and terminal

Publications (2)

Publication Number Publication Date
CN112449413A true CN112449413A (en) 2021-03-05
CN112449413B CN112449413B (en) 2023-05-09

Family

ID=74740770

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910806669.2A Active CN112449413B (en) 2019-08-29 2019-08-29 Power indication method, power determination device, network equipment and terminal

Country Status (1)

Country Link
CN (1) CN112449413B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023050243A1 (en) * 2021-09-30 2023-04-06 Zte Corporation Configuration of resource elements in demodulation reference signals for channel estimation and data transmission

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106487474A (en) * 2015-08-24 2017-03-08 电信科学技术研究院 A kind of downlink data demodulation method and device
CN109150477A (en) * 2017-06-28 2019-01-04 华为技术有限公司 Send and receive method, the network equipment and the terminal device of reference signal
CN109511162A (en) * 2017-09-15 2019-03-22 株式会社Kt Device and method for controlling the transimission power of DMRS in new radio
CN109891818A (en) * 2017-08-08 2019-06-14 Lg电子株式会社 For sending/receiving the method and device thereof of reference signal in a wireless communication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106487474A (en) * 2015-08-24 2017-03-08 电信科学技术研究院 A kind of downlink data demodulation method and device
CN109150477A (en) * 2017-06-28 2019-01-04 华为技术有限公司 Send and receive method, the network equipment and the terminal device of reference signal
CN109891818A (en) * 2017-08-08 2019-06-14 Lg电子株式会社 For sending/receiving the method and device thereof of reference signal in a wireless communication system
CN109511162A (en) * 2017-09-15 2019-03-22 株式会社Kt Device and method for controlling the transimission power of DMRS in new radio

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHINA TELECOM: "Remaining issues for NR PUSCH demodulation requirements", 《3GPP TSG-RAN WG4 MEETING #88BIS R4-1812226》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023050243A1 (en) * 2021-09-30 2023-04-06 Zte Corporation Configuration of resource elements in demodulation reference signals for channel estimation and data transmission

Also Published As

Publication number Publication date
CN112449413B (en) 2023-05-09

Similar Documents

Publication Publication Date Title
US11038561B2 (en) Method and apparatus for transmitting data
JP5993063B2 (en) Method for indicating a specific DMRS antenna port to a user in a wireless communication system
US8611449B2 (en) Method and apparatus for demodulation of a reference signal
JP5468606B2 (en) Resource block mapping of symbols with repeated overlap
JP2019149814A (en) Network signaling for network-assisted interference cancellation and suppression
KR20200035300A (en) Method for indicating reference signal configuration information, base station and terminal
CN103841644B (en) A kind of method, equipment and system for transmitting demodulated reference signal
WO2019029401A1 (en) Method and device for configuring reference signal information
JP2018510547A (en) DMRS extension for higher MU-MIMO
CN106411486B (en) Method and device for sending and receiving uplink demodulation pilot frequency
WO2017050065A1 (en) Method and apparatus for configuring channel state information-reference signal
CN106817194B (en) Reference signal sending method, receiving method and equipment
CN105075144A (en) Transmission apparatus and control signal mapping method
MX2012009255A (en) Pre-coding method and apparatus based on mixed multiplexing demodulation reference signals.
EA030779B1 (en) Base station, terminal, communication system, communication method and integrated circuit
RU2735611C1 (en) System and method of reducing demodulation reference signal costs
US10784938B2 (en) Data processing method and apparatus
US20140307691A1 (en) Information transmission method, system, and device
CN103378885A (en) Method for transmitting downlink data, method for receiving downlink data, and apparatus
CN112449413B (en) Power indication method, power determination device, network equipment and terminal
WO2018112698A1 (en) Method for transmitting signal, network device and terminal device
CN108781378B (en) Method and device for measuring channel quality index
WO2016188177A1 (en) Method and apparatus for sending enhanced physical downlink control channel
CN103220071A (en) Informing method and informing system for uplink demodulation pilot control signaling
WO2018171438A1 (en) Method and apparatus for transmitting diversity in multi-antenna communication system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant