CN111669263B - DMRS (demodulation reference signal) configuration method, device and terminal in 5G communication - Google Patents

DMRS (demodulation reference signal) configuration method, device and terminal in 5G communication Download PDF

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CN111669263B
CN111669263B CN202010426876.8A CN202010426876A CN111669263B CN 111669263 B CN111669263 B CN 111669263B CN 202010426876 A CN202010426876 A CN 202010426876A CN 111669263 B CN111669263 B CN 111669263B
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dmrs
dmrs configuration
additional
density
time
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CN111669263A (en
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瞿卫红
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Shanghai Xinxiu Microelectronics Technology Co ltd
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Shanghai Xinxiu Microelectronics Technology Co ltd
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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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • 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

Abstract

The embodiment of the invention provides a DMRS configuration method, a device and a terminal in 5G communication, wherein the method comprises the following steps: and determining a first DMRS configuration based on a time frequency resource block of data transmission and an Additional DMRS configuration state. And issuing the first DMRS configuration to a terminal so that the terminal can correct the frequency domain density and/or the time domain density of the first DMRS configuration according to the pre-acquired pilot frequency density parameter to obtain a second DMRS configuration. The invention considers the influence of channel tracking and pilot frequency density on data demodulation, adds the pilot frequency density parameter to determine the pilot frequency resource, can balance the channel estimation accuracy and the data code rate, solves the problem that DMRS density influences the channel estimation accuracy and the data transmission reliability in the prior art, and realizes the effects of adapting to various channel environments and achieving the optimal data demodulation accuracy.

Description

DMRS (demodulation reference signal) configuration method, device and terminal in 5G communication
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a DMRS configuration method, a DMRS configuration device and a terminal in 5G communication.
Background
With the commercialization of fourth-Generation mobile communication technology and the continuous growth of mobile services, research work for fifth-Generation mobile communication technology (5 th-Generation, 5G) has been started worldwide. 5G is a multi-technology converged communication, and meets the requirements of wide data and connection services through technology alternation and innovation. In RAN #71 conference, the third Generation Partnership project (3 rd Generation Partnership project,3 gpp) established a Study Item (SI) for the 5G new air interface study. According to the 5G division of vertical services, the 3GPP mainly studies the 5G new air interface technology from three aspects, namely enhanced wireless broadband (eMBB), low-latency high-reliability communications (URLLC) and large-scale machine type communications (mtc).
In the LTE system, the downlink pilot includes a Cell-specific RS (Cell-specific RS) with a full bandwidth, a DMRS (Demodulation Reference Signal) used for user Demodulation, and a CSI-RS (Channel-state information RS) used for Channel state information measurement. In 5G, in order to reduce unnecessary pilot overhead, the CRS is deleted and the functions of DMRS and CSI-RS are enhanced. For example, user-level DMRSs are set for both PDCCH and PDSCH, thereby improving the shaping reception performance; the CSI-RS is used for beam measurement. These changes in functionality correspondingly introduce changes in pilot design.
In LTE, DMRS exists in a PDSCH channel and the location is relatively fixed, as shown in fig. 1. This design requires the terminal to obtain data of the entire subframe first before channel estimation can be performed, thereby increasing the processing latency of the terminal. In 5G, in order to reduce the latency, a concept of a front-loaded DMRS is proposed, that is, a pilot is placed at the beginning of the downlink of each slot, so that the terminal can start channel estimation after receiving a partial symbol. Meanwhile, in order to take the performance of channel estimation into account, when the data of the downlink symbol in the time slot exceeds a certain threshold, a dynamic pilot (Additional DMRS) is added, so that the terminal is allowed to adopt interpolation or other algorithms based on the pilot and the dynamic pilot, and the channel estimation quality is ensured.
Existing DMRS patterns mainly consider correlation bandwidth and correlation time, that is, DMRSs can track channel changes. But it is not considered that DMRS density also has an influence on channel estimation accuracy and reliability of data transmission, for example, when DMRS density is higher, channel estimation accuracy is higher, but data transmission resources may be reduced, resulting in a decrease in reliability of data transmission.
Disclosure of Invention
The embodiment of the invention provides a DMRS configuration method, a base station, a terminal and a system in 5G communication, which are used for solving the problem that in the prior art, the DMRS density cannot be considered to influence the channel estimation accuracy and the data transmission reliability.
In a first aspect, an embodiment of the present invention provides a method for configuring a DMRS in 5G communication, including:
determining a first DMRS configuration based on a time frequency resource block of data transmission and an Additional DMRS configuration state; wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured;
and issuing the first DMRS configuration to a terminal so that the terminal can correct the frequency domain density and/or the time domain density of the first DMRS configuration according to a pre-acquired pilot frequency density parameter to obtain a second DMRS configuration.
Further, the pilot density parameter is indicated by a higher layer parameter configuration or by DCI.
Further, the determining a first DMRS configuration based on the time-frequency resource block for data transmission and the Additional DMRS configuration state specifically includes:
and determining the first DMRS configuration according to the time domain symbol length of the time frequency resource block and the DMRS pattern corresponding to the Additional DMRS configuration state.
Further, the determining the first DMRS configuration according to the time domain symbol length of the time-frequency resource block and the DMRS pattern corresponding to the Additional DMRS configuration state specifically includes:
if the Additional DMRS is not configured, determining a first DMRS configuration according to the time domain symbol length of the time frequency resource block and the first DMRS pattern;
and if the Additional DMRS is configured, determining the first DMRS configuration according to the time domain symbol length of the time frequency resource block and the second DMRS pattern.
In a second aspect, an embodiment of the present invention provides a method for configuring a DMRS in 5G communication, including:
receiving a first DMRS configuration issued by a base station; the first DMRS configuration is determined by a base station according to a time frequency resource block for data transmission and an Additional DMRS configuration state, wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured;
and according to a pre-acquired pilot frequency density parameter, correcting the frequency domain density and/or the time domain density of the first DMRS configuration to obtain a second DMRS configuration.
Further, the pilot density parameter is indicated by a higher layer parameter configuration or by DCI.
In a third aspect, an embodiment of the present invention provides a DMRS configuration apparatus in 5G communication, including:
the configuration module is used for determining a first DMRS configuration based on a time frequency resource block of data transmission and an Additional DMRS configuration state; wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured;
and the sending module is used for sending the first DMRS configuration to a terminal so that the terminal can correct the frequency domain density and/or the time domain density of the first DMRS configuration according to the pre-acquired pilot frequency density parameter to obtain a second DMRS configuration.
In a fourth aspect, an embodiment of the present invention provides a terminal, including:
the receiving module is used for receiving a first DMRS configuration issued by a base station; the first DMRS configuration is determined by a base station according to a time frequency resource block for data transmission and an Additional DMRS configuration state, wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured;
and the correcting module is used for correcting the frequency domain density and/or the time domain density of the first DMRS configuration according to the pre-acquired pilot frequency density parameter so as to obtain a second DMRS configuration.
In a fifth aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the DMRS configuration method in 5G communication as provided in the second aspect.
In a sixth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of the DMRS configuration method in 5G communication provided in the second aspect
The method, the device and the terminal for configuring the DMRS in the 5G communication, provided by the embodiment of the invention, add the pilot frequency density parameter to determine the pilot frequency resource, can balance the channel estimation accuracy and the data code rate, solve the problem that the channel estimation accuracy and the data transmission reliability are influenced by the DMRS density in the prior art, and realize the effects of adapting to various channel environments and achieving the optimal data demodulation accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a DMRS configuration method in 5G communication according to an embodiment of the present invention;
fig. 2 (a) is a schematic diagram of a time domain position occupied by a single-row dynamic pilot when a preamble pilot is a single symbol in time slot-based scheduling;
fig. 2 (b) is a schematic diagram of time domain positions occupied by two rows of dynamic pilots when the pilot is a single symbol in the time slot-based scheduling;
FIG. 2 (c) is a schematic diagram illustrating the time domain positions occupied by three rows of dynamic pilots when the preamble pilot is a single symbol in the scheduling based on time slots;
fig. 3 is a schematic diagram of time domain positions occupied by different numbers of dynamic pilots when the preamble pilots are two symbols in the scheduling based on the time slot;
fig. 4 is a flowchart illustrating another DMRS configuration method in 5G communication according to an embodiment of the present invention;
fig. 5 is a block diagram of a DMRS configuration in 5G communication according to an embodiment of the present invention;
fig. 6 is a block diagram of a terminal according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Fig. 1 is a flowchart illustrating a DMRS configuration method in 5G communication according to an embodiment of the present invention, where the method can be applied to a base station, and with reference to fig. 1, the method includes:
s101, determining a first DMRS configuration based on a time frequency resource block of data transmission and an Additional DMRS configuration state; wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured.
In this embodiment, the time domain of the time-frequency resource block is one slot (14 symbols, and the frequency domain is 12 subcarriers). The Additional DMRS is dynamic pilot (configurable). One of the biggest differences between 5G and 4G is that a parameter set (numerology) is introduced, which can be understood as that only one set of parameters is used in 4G, and then only one set of parameters in the frame structure, including sub-carrier spacing (SCS), slot (slot), symbol number (symbols), etc., exists in all environments, which has great limitations. 5G introduces the concept of parameter sets, and selecting different parameter sets for different environments greatly increases the flexibility of communication.
Here, the first DMRS configuration is a front-loaded DMRS configuration, and a DMRS pattern corresponding to the front pilot is shown in fig. 2 a. The base station can determine the first DMRS configuration according to the time domain symbol length of the time frequency resource block and the DMRS pattern corresponding to the Additional DMRS configuration state.
Specifically, if the Additional DMRS is not configured, determining a first DMRS configuration according to a time-domain symbol length of a time-frequency resource block and a first DMRS pattern; and if the Additional DMRS is configured, determining the configuration of the first DMRS according to the time domain symbol length of the time-frequency resource block and the second DMRS pattern.
In this embodiment, when the Additional DMRS is not configured, because the Additional DMRS is not configured, only the pilot is available, that is, the DMRS is configured according to the method of fig. 2 (a); when Additional DMRSs are configured, a column of DMRSs needs to be added, and at this time, the configuration of fig. 2 (b) is designed on the basis of fig. 2 (a).
For slot-based scheduling, when the preamble pilot is a single symbol, the time domain positions occupied by different numbers of Additional DMRSs (dynamic pilots) are shown in fig. 2 (a), (b), and (c), respectively. In this embodiment, the DMRS pattern shown in fig. 2 (a) is used as the first DMRS pattern, and the DMRS pattern shown in fig. 2 (b) is used as the second DMRS pattern.
For slot-based scheduling, and when the preamble pilot is two symbols, the time domain positions occupied by different numbers of Additional DMRSs are shown in fig. 3.
And S102, issuing the first DMRS configuration to a terminal so that the terminal can correct the frequency domain density and/or the time domain density of the first DMRS configuration according to a pre-acquired pilot frequency density parameter to obtain a second DMRS configuration.
In this embodiment, after the base station issues the first DMRS configuration to the terminal, the terminal corrects the frequency domain density and/or the time domain density of the first DMRS configuration according to the pre-obtained pilot frequency density parameter, so as to obtain the second DMRS configuration. The pilot density parameter may be configured by a higher layer parameter or indicated by DCI (Downlink Control Information). The invention comprehensively considers the influence of channel tracking and pilot frequency density on data demodulation, adds the pilot frequency density parameter to determine the pilot frequency resource, can balance the channel estimation accuracy and the data code rate, and realizes the effects of adapting to various channel environments and achieving the optimal data demodulation accuracy.
The above examples are illustrated below: firstly, a base station determines basic DMRS configuration according to a time frequency resource block for data transmission and an Additional DMRS configuration state. If the Additional DMRS is not configured, determining a first DMRS configuration according to the time domain symbol length of the time frequency resource block and a first DMRS pattern shown in the figure 2 (a);
then, the terminal determines that the time domain density is increased by 1 time through the pilot density parameter indicated by the DCI, and the terminal adopts two rows of pilot patterns, i.e., dmrs patterns in fig. 2 (b); or the terminal adds one DMRS column between two pilot patterns.
In another embodiment of the invention, the base station determines the basic DMRS configuration according to the time frequency resource block of data transmission and the Additional DMRS configuration state. Specifically, if the Additional DMRS is not configured, determining a first DMRS configuration according to a time-domain symbol length of a time-frequency resource block and a first DMRS pattern shown in fig. 2 (a); if the Additional DMRS is configured, determining a first DMRS configuration according to the time domain symbol length of the time frequency resource block and a second DMRS pattern shown in the figure 2 (b);
and then, the terminal determines that the frequency domain density is reduced to 1/2 of the original frequency domain density through the pilot density parameter indicated by the DCI, the second DMRS only contains the pilot at the frequency domain position of the first DMRS part, and when the first DMRS occupies subcarriers 1-12, the second DMRS only contains the pilot on subcarriers 1,3,5,7,9 and 11.
The DMRS configuration method in 5G communication provided by the embodiment of the invention adds the pilot frequency density parameter to determine the pilot frequency resource, can balance the channel estimation accuracy and the data code rate, solves the problem that the DMRS density influences the channel estimation accuracy and the data transmission reliability in the prior art, and realizes the effects of adapting to various channel environments and achieving the optimal data demodulation accuracy.
Fig. 4 is a flowchart illustrating another DMRS configuration method in 5G communication according to an embodiment of the present invention, where the method can be applied to a terminal, and with reference to fig. 4, the method includes:
s401, receiving a first DMRS configuration issued by a base station; the first DMRS configuration is determined by a base station according to a time frequency resource block for data transmission and an Additional DMRS configuration state, wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured.
S402, according to a pre-acquired pilot frequency density parameter, correcting the frequency domain density and/or the time domain density of the first DMRS configuration to obtain a second DMRS configuration. Wherein the pilot density parameter is configured by a higher layer parameter or indicated by DCI.
In this embodiment, after the base station issues the first DMRS configuration to the terminal, the terminal corrects the frequency domain density and/or the time domain density of the first DMRS configuration according to the pre-obtained pilot frequency density parameter, so as to obtain the second DMRS configuration. Wherein, the pilot density parameter can be configured by a higher layer parameter or indicated by DCI. The invention comprehensively considers the influence of channel tracking and pilot frequency density on data demodulation, adds the pilot frequency density parameter to determine the pilot frequency resource, can balance the channel estimation accuracy and the data code rate, and realizes the effects of adapting to various channel environments and achieving the optimal data demodulation accuracy.
Fig. 5 is a block diagram of a structure of a DMRS configuration apparatus in 5G communication according to an embodiment of the present invention, and referring to fig. 5, the apparatus includes a configuration module 501 and a transmission module 502, where:
the configuration module 501 is configured to determine a first DMRS configuration based on a time-frequency resource block for data transmission and an Additional DMRS configuration state; wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured.
The sending module 502 is configured to send the first DMRS configuration to a terminal, so that the terminal corrects the frequency domain density and/or the time domain density of the first DMRS configuration according to a pre-obtained pilot density parameter, so as to obtain a second DMRS configuration.
Fig. 6 is a block diagram of a terminal according to an embodiment of the present invention, and referring to fig. 6, the terminal includes a receiving module 601 and a modifying module 602, where:
the receiving module 601 is configured to receive a first DMRS configuration issued by a base station; the first DMRS configuration is determined by a base station according to a time frequency resource block of data transmission and an Additional DMRS configuration state, wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured.
The modifying module 602 is configured to modify, according to a pilot density parameter acquired in advance, a frequency domain density and/or a time domain density of the first DMRS configuration to obtain a second DMRS configuration.
Fig. 7 illustrates a schematic structural diagram of an electronic device, and as shown in fig. 7, the server may include: a processor (processor) 701, a communication Interface (Communications Interface) 702, a memory (memory) 703 and a bus 704, wherein the processor 701, the communication Interface 702 and the memory 703 are communicated with each other via the bus 704. The communication interface 704 may be used for information transmission between the server and the smart tv. The processor 701 may invoke logic instructions in the memory 703 to perform methods including, for example: s401, receiving a first DMRS configuration issued by a base station; the first DMRS configuration is determined by the base station according to a time frequency resource block of data transmission and an Additional DMRS configuration state. S402, according to a pre-acquired pilot frequency density parameter, correcting the frequency domain density and/or the time domain density of the first DMRS configuration to obtain a second DMRS configuration. Wherein the pilot density parameter is configured by a higher layer parameter or indicated by DCI.
The present embodiments also provide a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions that, when executed by a computer, enable the computer to perform the methods provided by the above-described method embodiments, for example, including: s401, receiving a first DMRS configuration issued by a base station; the first DMRS configuration is determined by the base station according to a time frequency resource block of data transmission and an Additional DMRS configuration state. S402, according to a pre-acquired pilot frequency density parameter, correcting the frequency domain density and/or the time domain density of the first DMRS configuration to obtain a second DMRS configuration. Wherein the pilot density parameter is configured by a higher layer parameter or indicated by DCI.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including: s401, receiving a first DMRS configuration issued by a base station; the first DMRS configuration is determined by the base station according to a time frequency resource block of data transmission and an Additional DMRS configuration state. S402, according to a pre-acquired pilot frequency density parameter, correcting the frequency domain density and/or the time domain density of the first DMRS configuration to obtain a second DMRS configuration. Wherein the pilot density parameter is configured by a higher layer parameter or indicated by DCI.
In summary, the method, the apparatus, and the terminal for DMRS configuration in 5G communication according to the embodiments of the present invention add the pilot density parameter to determine the pilot resource, so that the channel estimation accuracy and the data rate can be balanced, the problem that the DMRS density does not affect the channel estimation accuracy and the data transmission reliability in the prior art is solved, and the effects of adapting to various channel environments and achieving optimal data demodulation accuracy are achieved.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. A DMRS configuration method in 5G communication, comprising:
determining a first DMRS configuration based on a time frequency resource block of data transmission and an Additional DMRS configuration state; wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured; the method specifically comprises the following steps:
determining a first DMRS configuration according to the time domain symbol length of a time frequency resource block and a DMRS pattern corresponding to an Additional DMRS configuration state;
and issuing the first DMRS configuration to a terminal so that the terminal can correct the frequency domain density and/or the time domain density of the first DMRS configuration according to a pre-acquired pilot frequency density parameter to obtain a second DMRS configuration.
2. The method for configuring the DMRS in 5G communication according to claim 1, wherein the pilot density parameter is configured by a higher layer parameter or indicated by DCI.
3. The method for configuring the DMRS in 5G communication according to claim 1, wherein the determining the first DMRS configuration according to the time-domain symbol length of the time-frequency resource block and the DMRS pattern corresponding to the Additional DMRS configuration state specifically includes:
if the Additional DMRS is not configured, determining a first DMRS configuration according to the time domain symbol length of the time frequency resource block and the first DMRS pattern;
and if the Additional DMRS is configured, determining the first DMRS configuration according to the time domain symbol length of the time frequency resource block and the second DMRS pattern.
4. A DMRS configuration method in 5G communication, comprising:
receiving a first DMRS configuration issued by a base station; the first DMRS configuration is determined by a base station according to a time frequency resource block for data transmission and an Additional DMRS configuration state, wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured; determining a first DMRS configuration according to the time domain symbol length of a time frequency resource block and a DMRS pattern corresponding to an Additional DMRS configuration state;
and according to a pre-acquired pilot frequency density parameter, correcting the frequency domain density and/or the time domain density of the first DMRS configuration to obtain a second DMRS configuration.
5. The method for configuring the DMRS in 5G communication according to claim 4, wherein the pilot density parameter is configured by a higher layer parameter or indicated by DCI.
6. An apparatus for DMRS configuration in 5G communications, the apparatus employing the method according to any one of claims 1 to 3, the method comprising:
the configuration module is used for determining a first DMRS configuration based on a time frequency resource block of data transmission and an Additional DMRS configuration state; wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured;
and the sending module is used for sending the first DMRS configuration to a terminal so that the terminal can correct the frequency domain density and/or the time domain density of the first DMRS configuration according to the pre-acquired pilot frequency density parameter to obtain a second DMRS configuration.
7. A terminal employing the method of any of claims 4 to 5, comprising:
the receiving module is used for receiving a first DMRS configuration issued by a base station; the first DMRS configuration is determined by a base station according to a time frequency resource block of data transmission and an Additional DMRS configuration state, wherein the Additional DMRS configuration state comprises that the Additional DMRS is not configured and the Additional DMRS is configured;
and the correcting module is used for correcting the frequency domain density and/or the time domain density of the first DMRS configuration according to the pre-acquired pilot frequency density parameter so as to obtain a second DMRS configuration.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the DMRS configuration method in 5G communication according to any one of claims 4 to 5 when executing the program.
9. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the computer program, when being executed by a processor, implements the steps of the DMRS configuration method in 5G communication as claimed in any one of claims 4 to 5.
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CN114726491A (en) * 2021-01-06 2022-07-08 中兴通讯股份有限公司 DMRS configuration method, electronic device, and storage medium
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106470088A (en) * 2015-08-14 2017-03-01 中兴通讯股份有限公司 The notice of DMRS port or mapping relations, determine method and device
CN108809612A (en) * 2017-07-17 2018-11-13 华为技术有限公司 It is used for transmission the method and communication equipment of DMRS
CN109391387A (en) * 2017-08-03 2019-02-26 维沃移动通信有限公司 Demodulated reference signal transmissions method, the network equipment and computer readable storage medium
CN110401520A (en) * 2014-05-09 2019-11-01 华为技术有限公司 Demodulated reference signal configuration method, device, base station and user equipment

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9749144B2 (en) * 2014-01-30 2017-08-29 Qualcomm Incorporated MBSFN and RS considerations in bundled transmission design

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110401520A (en) * 2014-05-09 2019-11-01 华为技术有限公司 Demodulated reference signal configuration method, device, base station and user equipment
CN106470088A (en) * 2015-08-14 2017-03-01 中兴通讯股份有限公司 The notice of DMRS port or mapping relations, determine method and device
CN108809612A (en) * 2017-07-17 2018-11-13 华为技术有限公司 It is used for transmission the method and communication equipment of DMRS
CN109391387A (en) * 2017-08-03 2019-02-26 维沃移动通信有限公司 Demodulated reference signal transmissions method, the network equipment and computer readable storage medium

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