CN115066853A

CN115066853A - Demodulation reference signal DMRS (demodulation reference signal) configuration method, device and equipment and storage medium thereof

Info

Publication number: CN115066853A
Application number: CN202080004039.4A
Authority: CN
Inventors: 刘洋
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-09-16
Also published as: WO2022141525A1

Abstract

The invention provides a demodulation reference signal DMRS configuration method, a device, equipment and a storage medium thereof, wherein the method is applied to terminal equipment and comprises the following steps: acquiring DMRS configuration information including more than one configuration scheme; a target configuration scheme is selected from more than one configuration scheme. Therefore, the utilization rate of transmission resources is improved to improve the coverage performance, the demodulation performance of signals is not influenced, and technical support is provided for scenes of retransmitting information to improve the coverage quality and the like.

Description

Demodulation reference signal DMRS (demodulation reference signal) configuration method, device and equipment and storage medium thereof

Technical Field

The present invention relates to the field of mobile communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for DMRS configuration for demodulation reference signals.

Background

Today, mobile communication technology is rapidly developing, and it is becoming common to transfer information based on transmission resources such as channels.

In the related art, it is particularly important to achieve full utilization of transmission resources, for example, coverage is one of the key factors considered by operators when commercializing cellular networks, because it directly affects quality of service as well as capital expenditure and operating cost.

In order to increase coverage, the protocol supports PUSCH (Physical uplink shared channel) to obtain a larger received SNR (SIGNAL to NOISE RATIO) through repeated transmission, where R16 proposes a retransmission manner of retransmission type b, which is suitable for scheduled PUSCH and grant-free scheduled PUSCH.

Disclosure of Invention

The embodiment of the first aspect of the invention provides a self-adaptive demodulation reference signal (DMRS) configuration method, which is applied to terminal equipment and comprises the following steps: acquiring DMRS configuration information including more than one configuration scheme; a target configuration scheme is selected from the more than one configuration schemes.

Optionally, the DMRS configuration information including more than one configuration scheme includes: obtaining a DMRS configuration table comprising more than one configuration scheme, wherein each configuration scheme comprises at least one of the following information:

DMRS configuration index, DMRS symbol length, time domain position, time domain granularity, frequency domain position, and frequency domain granularity.

Optionally, the method further comprises: and acquiring the DMRS configuration table configured through RRC.

Optionally, the more than one configuration scheme in the DMRS configuration table comprises: at least one first type configuration scheme and at least one second type configuration scheme, wherein the second type configuration scheme provides a DMRS configuration density which is greater than that provided by the first type configuration scheme.

Optionally, the DMRS configuration density provided by the first type of configuration scheme includes: the DMRS symbol length is less than or equal to a preset threshold, and the number of DMRS time domain and frequency domain positions is less than or equal to the preset threshold; the DMRS configuration density provided by the second type of configuration scheme comprises: the length of the DMRS symbols is larger than a preset threshold value, and the number of the DMRS time domain frequency domain positions is larger than the preset threshold value.

Optionally, the selecting a target configuration scheme from the one configuration scheme includes: if the downlink signal-to-noise ratio is larger than a preset threshold value or the downlink channel quality indication is larger than the preset threshold value, selecting a target configuration scheme from the first type of configuration schemes; and if the downlink signal-to-noise ratio is smaller than or equal to a preset threshold value, selecting a target configuration scheme from the second type of configuration schemes.

Optionally, the selecting a target configuration scheme from the more than one configuration schemes includes: if the moving speed of the terminal equipment is less than or equal to a preset threshold value, selecting a target configuration scheme from the first type of configuration schemes; and if the moving speed of the terminal equipment is greater than a preset threshold value, selecting a target configuration scheme from the second type of configuration schemes.

Optionally, the selecting a target configuration scheme from the more than one configuration schemes includes:

if the number of time slot bundles of the cross-time slot channel estimation is larger than a preset threshold value, selecting a target configuration scheme from the first type of configuration schemes; and if the time slot bundling number of the cross-time slot channel estimation is less than or equal to a preset threshold value, selecting a target configuration scheme from the second type of configuration schemes. Optionally, the selecting a target configuration scheme from the more than one configuration schemes includes: if the data feedback state is ACK, selecting a target configuration scheme from the first type of configuration schemes; and if the data feedback state is NACK, selecting a target configuration scheme from the second type of configuration schemes.

Optionally, the selecting a target configuration scheme from the more than one configuration schemes includes: and receiving Downlink Control Information (DCI) comprising the DMRS configuration index, or receiving MAC-CE comprising the DMRS configuration index.

The embodiment of the second aspect of the invention provides a demodulation reference signal (DMRS) configuration method, which is applied to a base station and comprises the following steps: transmitting DMRS configuration information including more than one configuration scheme; and instructing the terminal equipment to select a target configuration scheme from the more than one configuration schemes. The embodiment of the third aspect of the present invention provides a demodulation reference signal DMRS configuration apparatus, where the apparatus is applied to a terminal device, and the apparatus includes: the device comprises an acquisition module, a demodulation reference signal (DMRS) configuration information acquisition module and a demodulation reference signal (DMRS) configuration information acquisition module, wherein the DMRS configuration information acquisition module is used for acquiring DMRS configuration information comprising more than one configuration scheme; a selection module to select a target configuration scheme from the more than one configuration schemes.

An embodiment of a fourth aspect of the present invention provides a demodulation reference signal DMRS configuration apparatus, where the apparatus is applied to a base station, and the apparatus includes: a transmitting module, configured to transmit DMRS configuration information including more than one configuration scheme; and the indicating module is used for indicating the terminal equipment to select the target configuration scheme from the more than one configuration schemes.

An embodiment of a fifth aspect of the present invention provides a communication device, which includes a processor, a transceiver, a memory, and a computer program stored in the memory, where the processor runs the computer program to implement the demodulation reference signal configuration method as set forth in the first or second aspect.

A sixth aspect of the present invention provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the demodulation reference signal configuration method set forth in the first aspect or the second aspect.

The embodiment provided by the invention at least has the following technical effects:

the method comprises the steps of acquiring DMRS configuration information which is sent by a base station and comprises more than one configuration scheme, and further selecting a target configuration scheme from the more than one configuration scheme. Therefore, the utilization rate of transmission resources is improved to improve the coverage performance, the demodulation performance of signals is not influenced, and technical support is provided for scenes of retransmitting information to improve the coverage quality and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a flowchart illustrating a demodulation reference signal DMRS configuration method according to an embodiment of the present invention;

fig. 2 is a block diagram illustrating a structure of a demodulation reference signal DMRS configuration apparatus according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a demodulation reference signal DMRS configuration method according to another embodiment of the present invention;

fig. 4 is a block diagram illustrating a structure of another demodulation reference signal DMRS configuration apparatus according to an embodiment of the present invention; and

fig. 5 is a block diagram of a communication device according to one embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In order to fully utilize transmission resources, the invention provides a demodulation reference signal DMRS configuration method so as to improve the coverage performance and guarantee the demodulation performance of a channel.

The following describes in detail a demodulation reference signal configuration method according to an embodiment of the present invention with reference to specific embodiments, where the method is applied to a terminal device, and the terminal device includes but is not limited to a mobile phone, a wearable terminal device, and other communication devices.

Fig. 1 is a flowchart of a method for configuring a demodulation reference signal DMRS according to an embodiment of the present invention, where the method includes:

step 101, obtaining demodulation reference signal (DMRS) configuration information including more than one configuration scheme.

In this embodiment, in order to perform coverage enhancement on the uplink PUSCH channel, a scheme for adjusting DMRS density is proposed, and a low-density DMRS scheme may save more resources for carrying bearer data and allocate more transmission power to PUSCH transmission, thereby improving the coding rate of the channel. On the other hand, the high-density DMRS scheme can improve the accuracy of channel estimation and also improve the PUSCH performance.

In order to balance the conflicting requirements and select and configure the optimal DMRS density for the UEs in different states under different scenarios, in an embodiment of the present invention, a base station sends DMRS configuration information including more than one configuration scheme to a terminal device, where the DMRS configuration information is adaptive, and may dynamically select the DMRS configuration information as a target configuration scheme according to the UE state, the channel state, and the like, so as to achieve optimal transmission and coverage performance.

In an actual implementation process, DMRS density may be adjusted by reducing DMRS symbol length, reducing DMRS time-domain and frequency-domain positions, and so on, and therefore, in this embodiment, each configuration scheme may include a DMRS configuration table, and each table element, for example, each row in the DMRS configuration table may at least include at least one of the following information:

the first method comprises the following steps: DMRS configuration index.

In this example, the DMRS configuration index may be understood as information identifying uniqueness of each configuration scheme, and may be in any form such as a number, text information, and subtitle information.

And the second method comprises the following steps: DMRS symbol length.

It is to be understood that the DMRS symbol length may be 3 symbols or 4 symbols, etc. in addition to 1 or 2 symbol lengths. The DMRS symbol length is extended, the DMRS density can be obviously improved, and the DMRS symbol length is reduced, and the DMRS density can be obviously reduced.

And the third is that: a time domain location.

In this example, the actual PUSCH time domain resource in the retransmission scenario may be divided into a plurality of slots, where each slot may have at most 4 DMRS positions, and in this embodiment, the DMRS configuration table may include slot positions corresponding to the DMRS positions.

And a fourth step of: time domain granularity.

In this embodiment, the time domain granularity refers to whether joint estimation is supported, and in the case of the support, the time domain is bound with multiple DMRSs to perform joint channel estimation. In this embodiment, the DMRS configuration table may include the number of slots corresponding to the DMRS positions, i.e., the time domain granularity.

And a fifth mode: frequency domain location.

In this embodiment, the subcarriers that place DMRSs can be considered as frequency domain locations in 12 subcarriers per RB resource of frequency domain PUSCH in the retransmission scenario. In this embodiment, the DMRS configuration table may include a frequency domain interval corresponding to the DMRS position, that is, a frequency domain position.

And a sixth mode: frequency domain granularity.

In this embodiment, similar to the time domain granularity, the frequency domain granularity may be understood as the frequency domain of the bonded DMRS for joint channel estimation.

In some possible embodiments, the base station and other communication devices may configure the DMRS configuration table through Radio Resource Control (RRC).

A target configuration scheme is selected from the plurality of configuration schemes, step 102.

In this example, a target configuration scheme suitable for the terminal device is adaptively selected from more than one configuration scheme to achieve optimal transmission and coverage performance.

To sum up, the DMRS configuration method for demodulation reference signals according to the embodiments of the present invention obtains DMRS configuration information that includes more than one configuration scheme and is sent by a base station, and further selects a target configuration scheme from the more than one configuration scheme. Therefore, the utilization rate of transmission resources is improved, the coverage performance is improved, the demodulation performance of signals is not influenced, and technical support is provided for scenes such as retransmission information and coverage quality improvement.

As mentioned above, the configuration of DMRS density is an important index that may affect coverage quality, and therefore, in this embodiment, more than one configuration scheme in the DMRS configuration table mainly includes DMRS configuration information with different densities.

In one embodiment of the invention, the DMRS configuration table comprises a plurality of configuration schemes with DMRS configuration density in sequence from low to high, and a target configuration scheme can be determined in the corresponding configuration schemes according to scene requirements.

In one embodiment of the present invention, the more than one configuration schemes in the DMRS configuration table include at least one first type configuration scheme and at least one second type configuration scheme, wherein DMRS configuration density provided by each configuration scheme in the second type configuration scheme is greater than DMRS configuration density provided by each configuration scheme in the first type configuration scheme.

That is, according to the DMRS configuration density that can be defined by each configuration scheme in the DMRS configuration table, all configuration schemes are divided into two types, where DMRS configuration density in the first type of configuration scheme is low, and DMRS configuration density in the second type of configuration scheme is high.

Referring to table 1 below, in some possible embodiments, the DMRS configuration table may include a plurality of rows, each row including a corresponding DMRS configuration index and DMRS configuration information limiting DMRS configuration density, where, when the DMRS configuration index is in a digital form, the DMRS configuration indexes 1 to 5 may be understood as corresponding to a first type configuration scheme, DMRS configuration densities defined by the DMRS configuration information corresponding to the first type configuration scheme are lower, DMRS configuration indexes 6 to 10 may be understood as corresponding to a second type configuration scheme, and DMRS configuration densities defined by the DMRS configuration information corresponding to the second type configuration scheme are higher.

TABLE 1

DMRS configuration index	DMRS configuration information
1	DMRS configuration information 1
2	DMRS configuration information 2
3	DMRS configuration information 3
4	DMRS configuration information 4
5	DMRS configuration information 5
6	DMRS configuration information 6
7	DMRS configuration information 7
8	DMRS configuration information 8
9	DMRS configuration information 9
10	DMRS configuration information 10

Since DMRS density can be adjusted by reducing DMRS symbol length, reducing DMRS time domain and frequency domain positions, in this embodiment, DMRS configuration density provided by each configuration scheme in the first type of configuration scheme includes: the DMRS symbol length is less than or equal to a preset threshold, and the DMRS time domain and frequency domain position number is less than or equal to the preset threshold, and the DMRS configuration density provided by each configuration scheme in the second type of configuration scheme comprises: the length of the DMRS symbols is larger than a preset threshold value, and the number of the DMRS time domain frequency domain positions is larger than the preset threshold value. The preset threshold corresponding to each DMRS configuration density may be flexibly set according to a communication state of the terminal device, and different preset thresholds may be different.

Further, the first-type configuration scheme and the second-type configuration scheme can be flexibly selected according to the state of the terminal equipment:

the first selection mode is as follows:

in this embodiment, the selection is based on the signal-to-noise ratio.

In this embodiment, if the downlink signal-to-noise ratio is greater than a preset threshold, or the downlink channel quality indicator is greater than the preset threshold, where the preset threshold is calibrated according to experimental data, it is directly indicated that the current signal quality is not good, and therefore, in order to ensure the signal transmission performance and save more resources for carrying bearer data, a target configuration scheme is selected from the first type of configuration scheme.

For example, when the first-class configuration scheme includes a plurality of low-density configuration schemes, one configuration scheme may be randomly selected as the target configuration scheme, or a downlink signal-to-noise ratio corresponding to each low-density configuration scheme or a range to which the downlink channel quality belongs may be established in advance according to experimental data, and the downlink signal-to-noise ratio of the current terminal device or the downlink channel quality is matched with the range, so as to determine that the successfully-matched low-density configuration scheme is the target configuration scheme.

In this embodiment, if the downlink signal-to-noise ratio or the downlink channel quality indicator is less than or equal to a preset threshold, where the preset threshold is calibrated according to experimental data, it is directly indicated that the current signal quality is better, and therefore, in order to better improve the PUSCH performance, a target configuration scheme is selected from the second type of configuration schemes.

For example, when the second type of configuration scheme includes multiple high-density configuration schemes, one configuration scheme may be randomly selected as a target configuration scheme, or a downlink signal-to-noise ratio corresponding to each high-density configuration scheme or a range to which the downlink channel quality belongs may be established in advance according to experimental data, and the downlink signal-to-noise ratio of the current terminal device or the downlink channel quality is matched with the range, and the successfully-matched high-density configuration scheme is determined as the target configuration scheme.

The second selection mode is as follows:

in the present embodiment, the selection is made according to the moving speed of the terminal device.

In this embodiment, if the moving speed of the terminal device is less than or equal to the preset threshold, where the preset threshold is calibrated according to the experimental data, that is, the terminal device is in a relatively stationary state, the quality of the signal is particularly important, and therefore, in order to ensure the signal transmission performance and save more resources for carrying bearer data, a target configuration scheme is selected from the first type of configuration scheme.

For example, when the first-type configuration scheme includes a plurality of low-density configuration schemes, one configuration scheme may be randomly selected as the target configuration scheme, or a range to which the moving speed of the terminal device corresponding to each low-density configuration scheme belongs may be constructed in advance according to experimental data, the moving speed of the terminal device of the current terminal device is matched with the range, and the successfully-matched low-density configuration scheme is determined to be the target configuration scheme.

In this embodiment, if the moving speed of the terminal device is greater than a preset threshold, where the preset threshold is calibrated according to experimental data, that is, the terminal device is in a moving state, a target configuration scheme is selected from the second class of configuration schemes in order to better improve the PUSCH performance.

For example, when the second type of configuration scheme includes a plurality of high-density configuration schemes, one configuration scheme may be randomly selected as the target configuration scheme, or a range to which the moving speed of the terminal device corresponding to each high-density configuration scheme belongs may be constructed in advance according to experimental data, the moving speed of the terminal device of the current terminal device is matched with the range, and the high-density configuration scheme that is successfully matched is determined as the target configuration scheme.

The third selection mode is as follows:

in this embodiment, the number of time slot bundles is selected according to the terminal device.

In an actual communication scenario, a logic transmission resource is divided into a plurality of time slots in a time domain, each time slot comprises a fixed number of symbols, each symbol corresponds to a DMRS position, the number of time slot bindings in cross-time slot joint channel estimation of actual communication is greater than a preset threshold, and if the number of time slot bindings is greater than the preset threshold, a target configuration scheme is selected from a first type of configuration scheme in order to ensure accuracy of channel estimation.

For example, when the first-type configuration scheme includes a plurality of low-density configuration schemes, one configuration scheme may be randomly selected as the target configuration scheme, or a range of the number of timeslot bindings of the terminal device corresponding to each low-density configuration scheme may be constructed in advance according to experimental data, the number of timeslot bindings of the current terminal device is matched with the range, and the successfully-matched low-density configuration scheme is determined to be the target configuration scheme.

In this embodiment, if the number of time slot bundles for cross-time-slot joint channel estimation is less than or equal to a preset threshold, a target configuration scheme is selected from the second type of configuration schemes.

For example, when the second type of configuration scheme includes a plurality of high-density configuration schemes, one configuration scheme may be randomly selected as the target configuration scheme, or a range to which the number of timeslot bindings of the terminal device corresponding to each high-density configuration scheme belongs may be constructed in advance according to experimental data, the number of timeslot bindings of the current terminal device is matched with the range, and the successfully-matched high-density configuration scheme is determined to be the target configuration scheme.

The fourth selection mode is as follows:

in this embodiment, selection is based on the data feedback state. The data feedback state may be understood as state information fed back by a data sending request of the receiving end.

In this embodiment, if the data feedback status is an Acknowledgement Character (ACK), it indicates that the communication quality of the communication device such as the base station and the terminal device is good, and at this time, to ensure the signal transmission performance and save more resources for carrying bearer data, a target configuration scheme is selected from the first type of configuration schemes.

For example, when a plurality of low-density profiles are included in the first-type profile, one profile may be randomly selected as the target profile.

In this embodiment, if the data feedback status is a rejection character (NO-Acknowledgement, NACK) fed back due to a failed demodulation at the receiving end, it indicates that the communication quality of the communication device such as the base station and the terminal device is poor, and at this time, in order to better improve the PUSCH performance, the target configuration scheme is selected from the second type of configuration schemes.

For example, when a plurality of high-density recipes are included in the second type of recipe, one recipe may be randomly selected as the target recipe.

The fifth selection mode is as follows:

in this embodiment, the base station directly indicates the configuration scheme of the terminal device.

In this example, Downlink Control Information (DCI) including a DMRS configuration index sent by a base station is received, where the DMRS configuration index may be in a digital form, or may be any Information that uniquely identifies a configuration scheme, such as an alphabet form.

In this embodiment, the DMRS configuration index control layer control element information (MAC-CE) sent by the base station may also be received.

Therefore, in this embodiment, the DMRS of the original standard PUSCH is configured semi-statically, and in this embodiment, a mode of higher layer configuration + lower layer selection may be adopted, for example, RRC configuration + DCI dynamic indication/, or RRC configuration + MAC-CE dynamic activation, or MAC configuration + DCI dynamic selection, and the like.

In summary, the demodulation reference signal configuration method according to the embodiment of the present invention flexibly adapts the DMRS configuration scheme according to the state information of the terminal device, thereby achieving the best transmission and coverage performance.

The DMRS configuration apparatus for demodulation reference signals provided in the embodiments of the present invention corresponds to the methods provided in the embodiments of the present invention, and therefore, the implementation of the DMRS configuration method for demodulation reference signals is also applicable to the DMRS configuration apparatus for demodulation reference signals provided in this embodiment, and detailed description is not repeated in this embodiment.

Fig. 2 is a schematic structural diagram of a demodulation reference signal DMRS configuration apparatus according to an embodiment of the present invention, where the apparatus is applied to a terminal device, and as shown in fig. 2, the demodulation reference signal configuration apparatus includes: an obtaining module 201, a selecting module 202, wherein,

an obtaining module 201, configured to obtain DMRS configuration information of demodulation reference signals including more than one configuration scheme;

a selecting module 202 for selecting a target configuration scheme from the more than one configuration schemes.

To sum up, the DMRS configuration apparatus for demodulation reference signals according to the embodiments of the present invention obtains DMRS configuration information that includes more than one configuration scheme and is sent by a base station, and further selects a target configuration scheme from the more than one configuration scheme. Therefore, the utilization rate of transmission resources is improved to improve the coverage performance, the demodulation performance of signals is not influenced, and technical support is provided for scenes of retransmitting information to improve the coverage quality and the like.

In order to implement the above embodiments, the present invention further provides a demodulation reference signal DMRS configuration method. The method is applied to a base station side, and fig. 3 is a flowchart of a demodulation reference signal DMRS configuration method according to an embodiment of the present invention, and as shown in fig. 3, the method includes:

step 301, DMRS configuration information including more than one configuration scheme is transmitted.

the first method comprises the following steps: DMRS configuration index.

In this example, the DMRS configuration index may be understood as information that identifies uniqueness of each configuration scheme, and may be in any form of a number, text information, subtitle information, and the like.

And the second method comprises the following steps: DMRS symbol length.

And the third is that: a time domain location.

And fourthly: time domain granularity.

And a fifth mode: frequency domain location.

And a sixth mode: frequency domain granularity.

Step 302, instructing the terminal device to select a target configuration scheme from the more than one configuration schemes.

In this example, the terminal device is instructed to adaptively select a target configuration scheme suitable for the terminal device from among more than one configuration schemes, achieving optimal transmission and coverage performance.

In summary, in the method for configuring the DMRS for the demodulation reference signal according to the embodiment of the present invention, the DMRS configuration information that includes more than one configuration scheme is sent, and then the terminal device is instructed to select the target configuration scheme from the more than one configuration scheme. Therefore, the utilization rate of transmission resources is improved, the coverage performance is improved, the demodulation performance of signals is not influenced, and technical support is provided for scenes such as retransmission information and coverage quality improvement.

Corresponding to the DMRS configuration methods provided in the foregoing embodiments, the present invention further provides a DMRS configuration apparatus, and since the DMRS configuration apparatus provided in the present invention corresponds to the methods provided in the foregoing embodiments, the embodiments of the DMRS configuration method are also applicable to the DMRS configuration apparatus provided in this embodiment, and detailed descriptions are omitted in this embodiment.

Fig. 4 is a schematic structural diagram of a demodulation reference signal DMRS configuration apparatus according to an embodiment of the present invention, where the apparatus is applied to a terminal device, and as shown in fig. 4, the demodulation reference signal configuration apparatus includes: a sending module 401 and an indicating module 402, wherein,

a transmitting module 401, configured to transmit DMRS configuration information including more than one configuration scheme;

an instructing module 402, configured to instruct the terminal device to select a target configuration scheme from the more than one configuration schemes.

To sum up, the DMRS configuration apparatus according to the embodiment of the present invention sends DMRS configuration information including more than one configuration scheme, and further instructs a terminal device to select a target configuration scheme from the more than one configuration scheme. Therefore, the utilization rate of transmission resources is improved to improve the coverage performance, the demodulation performance of signals is not influenced, and technical support is provided for scenes of retransmitting information to improve the coverage quality and the like.

The invention also provides a communication device and a readable storage medium according to the embodiment of the invention.

As shown in fig. 5, is a block diagram of a communication device configured for demodulation reference signals according to an embodiment of the present invention. The communication device is intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The communication device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 5, the communication apparatus includes: one or more processors 501, memory 502, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components are interconnected using different buses and may be mounted on a common motherboard or in other manners as desired. The processor may process instructions for execution within the communication device, including instructions stored in or on the memory to display graphical information of a GUI on an external input/output apparatus (such as a display device coupled to the interface). In other embodiments, multiple processors and/or multiple buses may be used, along with multiple memories and multiple memories, as desired. Also, multiple communication devices may be connected, with each device providing portions of the necessary operations (e.g., as a server array, a group of blade servers, or a multi-processor system). In fig. 5, one processor 501 is taken as an example.

The memory 502 is a non-transitory computer readable storage medium provided by the present invention. The memory stores instructions executable by at least one processor, so that the at least one processor executes the demodulation reference signal configuration method provided by the invention. The non-transitory computer-readable storage medium of the present invention stores computer instructions for causing a computer to execute the demodulation reference signal configuration method provided by the present invention.

The memory 502, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to demodulation reference signal, DMRS, configurations in embodiments of the present invention. The processor 501 executes various functional applications of the server and data processing by running non-transitory software programs, instructions, and modules stored in the memory 502, that is, implements the demodulation reference signal configuration method in the above method embodiments.

The memory 502 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created from use of the positioning communication device, and the like. Further, the memory 502 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. Optionally, memory 502 may optionally include memory located remotely from processor 501, which may be connected to a location communication device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The communication device that performs demodulation reference signal configuration may further include: an input device 503 and an output device 504. The processor 501, the memory 502, the input device 503 and the output device 504 may be connected by a bus or other means, and fig. 5 illustrates the connection by a bus as an example.

The input device 503 may receive input numeric or character information and generate key signal inputs related to user settings and function controls of the positioning communication apparatus, such as an input device such as a touch screen, keypad, mouse, track pad, touch pad, pointer stick, one or more mouse buttons, track ball, joystick, etc. The output devices 504 may include a display device, auxiliary lighting devices (e.g., LEDs), and haptic feedback devices (e.g., vibrating motors), among others. The display device may include, but is not limited to, a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display, and a plasma display. In some implementations, the display device can be a touch screen.

Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, application specific ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.

These computer programs (also known as programs, software applications, or code) include machine instructions for a programmable processor, and may be implemented using high-level procedural and/or object-oriented programming languages, and/or assembly/machine languages. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or device (e.g., magnetic discs, optical disks, memory, Programmable Logic Devices (PLDs)) used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.

To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic, speech, or tactile input.

The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), and the Internet.

The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.

In the server for executing the demodulation reference signal configuration method according to the embodiment of the present invention, the terminal device obtains the DMRS configuration information that includes more than one configuration scheme and is sent by the base station, and further, the terminal device selects a target configuration scheme from the more than one configuration scheme. Therefore, the utilization rate of transmission resources is improved to improve the coverage performance, the demodulation performance of signals is not influenced, and technical support is provided for scenes of retransmitting information to improve the coverage quality and the like.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present invention can be achieved.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

A DMRS configuration method is applied to terminal equipment and comprises the following steps:

acquiring DMRS configuration information including more than one configuration scheme;

a target configuration scheme is selected from the more than one configuration schemes.
The method of claim 1, wherein the DMRS configuration information including more than one configuration scheme comprises:

obtaining a DMRS configuration table comprising more than one configuration scheme, wherein each configuration scheme comprises at least one of the following information:

DMRS configuration index, DMRS symbol length, time domain position, time domain granularity, frequency domain position, and frequency domain granularity.
The method of claim 2, further comprising:

and acquiring the DMRS configuration table configured by RRC.
The method of claim 2, wherein more than one configuration scheme in the DMRS configuration table comprises:

at least one first type configuration scheme and at least one second type configuration scheme, wherein the second type configuration scheme provides a DMRS configuration density which is greater than that provided by the first type configuration scheme.
The method of claim 4,

the DMRS configuration density provided by the first type of configuration scheme comprises: the DMRS symbol length is less than or equal to a preset threshold, and the number of DMRS time domain frequency domain positions is less than or equal to the preset threshold;

the DMRS configuration density provided by the second type of configuration scheme comprises: the length of the DMRS symbols is larger than a preset threshold value, and the number of the DMRS time domain frequency domain positions is larger than the preset threshold value.
The method of claim 5, wherein selecting a target configuration scheme from the more than one configuration schemes comprises:

if the downlink signal-to-noise ratio is larger than a preset threshold value or the downlink channel quality indication is larger than the preset threshold value, selecting a target configuration scheme from the first type of configuration schemes;

and if the downlink signal-to-noise ratio is smaller than or equal to a preset threshold value, selecting a target configuration scheme from the second type of configuration schemes.
The method of claim 5, wherein selecting a target configuration scheme from the more than one configuration schemes comprises:

if the moving speed of the terminal equipment is less than or equal to a preset threshold value, selecting a target configuration scheme from the first type of configuration schemes;

and if the moving speed of the terminal equipment is greater than a preset threshold value, selecting a target configuration scheme from the second type of configuration schemes.
The method of claim 5, wherein selecting a target configuration scheme from the more than one configuration schemes comprises:

if the number of time slot bundles of the cross-time slot channel estimation is larger than a preset threshold value, selecting a target configuration scheme from the first type of configuration schemes;

and if the time slot bundling number of the cross-time slot channel estimation is less than or equal to a preset threshold value, selecting a target configuration scheme from the second type of configuration schemes.
The method of claim 5, wherein selecting the target configuration scheme from the more than one configuration schemes comprises:

if the data feedback state is ACK, selecting a target configuration scheme from the first type of configuration schemes;

and if the data feedback state is NACK, selecting a target configuration scheme from the second type of configuration schemes.
The method of claim 2, wherein selecting a target configuration scheme from the more than one configuration schemes comprises:

receiving Downlink Control Information (DCI) including the DMRS configuration index, or,

receiving a MAC-CE comprising the DMRS configuration index.
A DMRS configuration method for demodulation reference signals is applied to a base station and comprises the following steps:

transmitting DMRS configuration information including more than one configuration scheme;

instructing the terminal device to select a target configuration scheme from the more than one configuration schemes.
A demodulation reference signal configuration device, which is applied to a terminal device, includes:

the device comprises an acquisition module, a demodulation reference signal (DMRS) configuration information acquisition module and a demodulation reference signal (DMRS) configuration information acquisition module, wherein the DMRS configuration information acquisition module is used for acquiring DMRS configuration information comprising more than one configuration scheme;

a selection module to select a target configuration scheme from the more than one configuration schemes.
A demodulation reference signal (DMRS) configuration device is applied to a base station and comprises the following components:

a transmission module for transmitting DMRS configuration information including more than one configuration scheme;

and the indicating module is used for indicating the terminal equipment to select the target configuration scheme from the more than one configuration schemes.
A communication device comprising a processor, a transceiver, a memory, and a computer program stored on the memory, the processor executing the computer program to implement the demodulation reference signal, DMRS, configuration method as claimed in any one of claims 1 to 10 or 11.
A processor-readable storage medium, wherein the processor-readable storage medium stores a computer program for causing the processor to execute the demodulation reference signal, DMRS, configuration method as defined in any one of claims 1 to 10 or 11.