DMRS configuration adaptive method, device and storage medium

Abstract

The present invention discloses a method, device, and storage medium for adaptive DMRS configuration. The method comprises: determining whether the UE is far or close to a base station by obtaining the channel quality of the UE's uplink and downlink; determining the UE's movement speed by obtaining the UE's physical layer frequency offset value; and then adaptively configuring the DMRS symbol type and symbol position based on the UE's distance from the base station and the UE's movement speed. The present invention can improve the communication performance of the UE and is widely applicable to the field of 5G communication technology.

Description

Technical Field

[0001] The present invention relates to the field of 5G communication technologies, and in particular to a method, device, and storage medium for DMRS configuration adaptation. Background Art

[0002] After the user equipment (UE) accesses the DMRS configuration in the base station system, the UE's location and movement speed may change at any time. The fixed DMRS demodulation reference signal configuration may cause inaccurate UE channel estimation accuracy and poor radio link performance. Summary of the Invention

[0003] The present invention aims to at least partially address one of the technical problems in the related art. To this end, one object of the present invention is to provide a method, apparatus, and storage medium for adaptive DMRS configuration, which can adaptively configure the DMRS symbol type based on the UE's distance from the base station and / or the UE's movement speed, thereby improving the UE's communication performance.

[0004] The technical solution adopted in the present invention is:

[0005] In a first aspect, the present invention provides a method for DMRS configuration adaptation, the method comprising: obtaining the channel quality of the UE uplink and downlink, thereby determining whether the UE is close or far from the base station; obtaining the UE physical layer frequency deviation value, thereby determining whether the moving speed of the UE is slow, medium or fast; if the UE is close to the base station and the moving speed of the UE is slow, setting the DMRS configuration to a single symbol pre-DMRS; if the UE is far from the base station and the moving speed of the UE is slow, setting the DMRS configuration to a single symbol pre-DMRS + additional DMRS; if the UE is close to the base station and the moving speed of the UE is If the UE is at a medium speed, the DMRS configuration is set to double-symbol pre-DMRS; if the UE is at a far point from the base station and the moving speed of the UE is medium, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is at a close point from the base station and the moving speed of the UE is high, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is at a far point from the base station and the moving speed of the UE is high, the DMRS configuration is set to double-symbol pre-DMRS+additional DMRS; the DMRS configuration is sent to the UE through RRC signaling, so that the UE switches the DMRS configuration.

[0006] Among them, obtaining the channel quality of the UE's uplink and downlink, so as to determine whether the UE is close or far from the base station, includes: obtaining the signal-to-noise ratio of the PUSCH channel in the UE uplink, or the signal-to-noise ratio of the SRS signal; or obtaining the CSI information in the UE downlink, and obtaining the cqi value from the CSI information; if the signal-to-noise ratio of the PUSCH channel is higher than a preset first threshold, or the signal-to-noise ratio of the SRS signal is higher than a preset second threshold, or the cqi value is higher than a preset third threshold, then it is determined that the UE is close to the base station; otherwise, it is determined that the UE is far from the base station.

[0007] The UE physical layer frequency offset value is a frequency offset value for the UE to send uplink data; wherein obtaining the UE physical layer frequency offset value to determine whether the moving speed of the UE is slow, medium, or fast includes: if the frequency offset value is less than or equal to a preset fourth threshold, determining that the moving speed of the UE is slow; conversely, if the frequency offset value is greater than or equal to a preset fifth threshold, determining that the moving speed of the UE is high; conversely, if the frequency offset value is greater than the fourth threshold and less than the fifth threshold, determining that the moving speed of the UE is medium;

[0008] In a second aspect, the present invention provides a device for adaptive DMRS configuration, which includes: a UE position judgment module, which is used to obtain the channel quality of the UE uplink and downlink, so as to judge whether the UE is close or far from the base station; a UE moving speed judgment module, which is used to obtain the UE physical layer frequency deviation value, so as to judge whether the moving speed of the UE is slow, medium or fast; a DMRS configuration setting module, which is used to set the DMRS configuration to a single symbol pre-DMRS if the UE is close to the base station and the moving speed of the UE is slow; if the UE is far from the base station and the moving speed of the UE is slow, the DMRS configuration is set to a single symbol pre-DMRS + additional DMRS; if the UE is close to the base station and the moving speed of the UE is slow, the DMRS configuration is set to a single symbol pre-DMRS + additional DMRS; if the UE is close to the base station and the moving speed of the UE is slow, the DMRS configuration is set to a single symbol pre-DMRS + additional DMRS. If the UE is at a close point and the moving speed of the UE is medium, the DMRS configuration is set to double-symbol pre-DMRS; if the UE is at a far point from the base station and the moving speed of the UE is medium, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is at a close point from the base station and the moving speed of the UE is high, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is at a far point from the base station and the moving speed of the UE is high, the DMRS configuration is set to double-symbol pre-DMRS+additional DMRS; a DMRS configuration sending module is used to send the DMRS configuration to the UE through RRC signaling, so that the UE switches the DMRS configuration.

[0009] Among them, the UE position judgment module includes: a channel quality parameter acquisition unit, used to obtain the signal-to-noise ratio of the PUSCH channel in the UE uplink, or the signal-to-noise ratio of the SRS signal; or obtain the CSI information in the UE downlink, and obtain the cqi value from the CSI information; a UE position distance judgment unit, used to judge that the position of the UE is close to the base station if the signal-to-noise ratio of the PUSCH channel is higher than a preset first threshold, or the signal-to-noise ratio of the SRS signal is higher than a preset second threshold, or the cqi value is higher than a preset third threshold; otherwise, the position of the UE is judged to be far from the base station.

[0010] In a third aspect, the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer of a base station to execute the method as described above.

[0011] The beneficial effects of the present invention are:

[0012] The present invention determines whether the UE is far or close to the base station by obtaining the channel quality of the UE's uplink and downlink, and determines the UE's moving speed by obtaining the UE's physical layer frequency deviation value. Then, according to the UE's position from the base station and the UE's moving speed, the DMRS symbol type and symbol position are adaptively configured, thereby improving the UE's communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 1 is a flow chart of an embodiment of a method for DMRS configuration adaptation according to the present invention;

[0014] Figure 2 yes Figure 1 A flowchart of an embodiment of step S11;

[0015] Figure 3 1 is a structural diagram of an embodiment of a device for DMRS configuration adaptation according to the present invention;

[0016] Figure 4 yes Figure 3 A structural diagram of an embodiment of a UE location determination module 11. DETAILED DESCRIPTION

[0017] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other. Example 1

[0018] See also Figure 1 , Figure 1 FIG. 1 is a flow chart of an embodiment of a method for DMRS configuration adaptation according to the present invention. Figure 1 As shown, the method includes the following steps:

[0019] S11: Obtain the channel quality of the UE uplink and downlink to determine whether the UE is close to or far from the base station;

[0020] Specifically, please refer to Figure 2 , Figure 2 yes Figure 1 A flow chart of an embodiment of step S11. Figure 2 As shown, step S11 includes the following sub-steps:

[0021] S111: Obtain the signal-to-noise ratio of the PUSCH channel in the UE uplink, or the signal-to-noise ratio of the SRS signal; or obtain the CSI information in the UE downlink, and obtain the cqi value from the CSI information;

[0022] S112: If the signal-to-noise ratio of the PUSCH channel is higher than the preset first threshold, or the signal-to-noise ratio of the SRS signal is higher than the preset second threshold, or the cqi value is higher than the preset third threshold, then the position of the UE is judged to be close to the base station; otherwise, the position of the UE is judged to be far from the base station.

[0023] S12: Obtain the UE physical layer frequency deviation value to determine whether the UE is moving slowly, medium or fast;

[0024] Preferably, the UE physical layer frequency offset value is the frequency offset value of the UE sending uplink data. Since the UE moves at a certain speed, its uplink data signal will produce Doppler frequency offset. Conversely, the frequency offset value of the UE sending uplink data can be used to determine whether the UE is moving fast or slow.

[0025] Step S12 includes the following judgment steps: if the frequency deviation value is less than or equal to a preset fourth threshold, the UE's moving speed is judged to be slow; conversely, if the frequency deviation value is greater than or equal to a preset fifth threshold, the UE's moving speed is judged to be high; conversely, if the frequency deviation value is greater than the fourth threshold and less than the fifth threshold, the UE's moving speed is judged to be medium.

[0026] For example, the fourth threshold is set to 50 and the fifth threshold is set to 250. If the frequency deviation value is less than or equal to 50 Hz, the UE is judged to be moving at a slow speed; if the frequency deviation value is greater than or equal to 250 Hz, the UE is judged to be moving at a high speed; if the frequency deviation value is greater than 50 and less than 250, the UE is judged to be moving at a medium speed.

[0027] It should be noted that the execution order of step S11 and step S12 can be interchanged.

[0028] S13: If the UE is close to the base station and the moving speed of the UE is slow, the DMRS configuration is set to a single-symbol preamble DMRS; if the UE is far from the base station and the moving speed of the UE is slow, the DMRS configuration is set to a single-symbol preamble DMRS+additional DMRS; if the UE is close to the base station and the moving speed of the UE is medium, the DMRS configuration is set to a double-symbol preamble DMRS; if the UE is far from the base station and the moving speed of the UE is medium, the DMRS configuration is set to a single-symbol preamble DMRS+additional DMRS; if the UE is close to the base station and the moving speed of the UE is high, the DMRS configuration is set to a single-symbol preamble DMRS+additional DMRS; if the UE is far from the base station and the moving speed of the UE is high, the DMRS configuration is set to a single-symbol preamble DMRS+additional DMRS; if the UE is far from the base station and the moving speed of the UE is high, the DMRS configuration is set to a double-symbol preamble DMRS+additional DMRS;

[0029] S14: Send the DMRS configuration to the UE via RRC signaling, so that the UE switches the DMRS configuration. Example 2

[0030] See also Figure 3 , Figure 3 FIG. 1 is a structural diagram of an embodiment of a device for DMRS configuration adaptation according to the present invention. Figure 3 As shown, the apparatus includes a UE position determination module 11 , a UE moving speed determination module 12 , a DMRS configuration setting module 13 and a DMRS configuration sending module 14 .

[0031] The UE position determination module 11 is used to obtain the channel quality of the UE uplink and downlink, thereby determining whether the UE is close or far from the base station. Figure 4 The UE position determination module 11 includes a channel quality parameter acquisition unit 111 and a UE position distance determination unit 112. The channel quality parameter acquisition unit 111 is used to obtain the signal-to-noise ratio of the PUSCH channel in the UE uplink, or the signal-to-noise ratio of the SRS signal; or obtain the CSI information in the UE downlink, and obtain the cqi value from the CSI information. The UE position distance determination unit 112 is used to determine that the position of the UE is close to the base station if the signal-to-noise ratio of the PUSCH channel is higher than a preset first threshold, or the signal-to-noise ratio of the SRS signal is higher than a preset second threshold, or the cqi value is higher than a preset third threshold; otherwise, it is determined that the position of the UE is far from the base station.

[0032] The UE moving speed determination module 12 is configured to obtain a UE physical layer frequency offset value, thereby determining whether the UE's moving speed is slow, medium, or fast.

[0033] The DMRS configuration setting module 13 is used to set the DMRS configuration to a single-symbol preamble DMRS if the UE is close to the base station and the UE is moving at a slow speed; set the DMRS configuration to a single-symbol preamble DMRS+additional DMRS if the UE is far from the base station and the UE is moving at a slow speed; set the DMRS configuration to a double-symbol preamble DMRS if the UE is close to the base station and the UE is moving at a medium speed; set the DMRS configuration to a single-symbol preamble DMRS+additional DMRS if the UE is far from the base station and the UE is moving at a medium speed; set the DMRS configuration to a single-symbol preamble DMRS+additional DMRS if the UE is close to the base station and the UE is moving at a high speed; set the DMRS configuration to a single-symbol preamble DMRS+additional DMRS if the UE is far from the base station and the UE is moving at a high speed; set the DMRS configuration to a double-symbol preamble DMRS+additional DMRS if the UE is far from the base station and the UE is moving at a high speed;

[0034] The DMRS configuration sending module 14 is configured to send the DMRS configuration to the UE via RRC signaling, so that the UE switches the DMRS configuration.

[0035] It should be noted that the execution order of the UE location determination module 11 and the UE moving speed determination module 12 can be interchanged. Specifically, the working method of each module in this embodiment can be referred to the first embodiment, which will not be described in detail here. Example 3

[0036] The present invention further provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to enable a computer of a base station to execute the method described in the first embodiment.

[0037] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A method for DMRS configuration adaptation, characterized in that: include: Obtaining the channel quality of the UE uplink and downlink, thereby determining whether the UE is close to or far from the base station; Obtaining a UE physical layer frequency offset value, thereby determining whether the UE is moving at a slow, medium, or fast speed; If the UE is located close to the base station and the UE is moving slowly, setting the DMRS configuration to a single-symbol preamble DMRS; If the UE is far away from the base station and the moving speed of the UE is slow, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is close to the base station and the moving speed of the UE is medium, the DMRS configuration is set to double-symbol pre-DMRS; if the UE is far away from the base station and the moving speed of the UE is medium, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is close to the base station and the moving speed of the UE is high, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is far away from the base station and the moving speed of the UE is high, the DMRS configuration is set to double-symbol pre-DMRS+additional DMRS; The DMRS configuration is sent to the UE via RRC signaling, so that the UE switches the DMRS configuration.

2. The method according to claim 1, characterized in that Obtaining the channel quality of the UE uplink and downlink, thereby determining whether the UE is close to or far from the base station, includes: Obtain the signal-to-noise ratio of the PUSCH channel in the UE uplink, or the signal-to-noise ratio of the SRS signal; or obtain the CSI information in the UE downlink, and obtain the cqi value from the CSI information; If the signal-to-noise ratio of the PUSCH channel is higher than a preset first threshold, or the signal-to-noise ratio of the SRS signal is higher than a preset second threshold, or the cqi value is higher than a preset third threshold, then the position of the UE is judged to be close to the base station; otherwise, the position of the UE is judged to be far from the base station.

3. The method according to claim 1, characterized in that The UE physical layer frequency offset value is a frequency offset value for the UE to send uplink data; The obtaining of the UE physical layer frequency offset value, thereby determining whether the UE is moving at a slow, medium, or fast speed, includes: If the frequency deviation value is less than or equal to a preset fourth threshold, it is determined that the moving speed of the UE is slow; otherwise, If the frequency deviation value is greater than or equal to a preset fifth threshold, it is determined that the moving speed of the UE is high speed; otherwise, If the frequency offset value is greater than the fourth threshold and less than the fifth threshold, it is determined that the moving speed of the UE is medium.

4. A device for DMRS configuration adaptation, characterized in that: include: A UE position determination module is used to obtain the channel quality of the UE uplink and downlink, thereby determining whether the UE is close to or far from the base station; A UE moving speed determination module is configured to obtain a UE physical layer frequency deviation value, thereby determining whether the UE's moving speed is slow, medium, or fast; a DMRS configuration setting module, configured to set the DMRS configuration to a single-symbol preamble DMRS if the UE is located close to the base station and the UE is moving slowly; If the UE is far away from the base station and the moving speed of the UE is slow, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is close to the base station and the moving speed of the UE is medium, the DMRS configuration is set to double-symbol pre-DMRS; if the UE is far away from the base station and the moving speed of the UE is medium, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is close to the base station and the moving speed of the UE is high, the DMRS configuration is set to single-symbol pre-DMRS+additional DMRS; if the UE is far away from the base station and the moving speed of the UE is high, the DMRS configuration is set to double-symbol pre-DMRS+additional DMRS; The DMRS configuration sending module is used to send the DMRS configuration to the UE through RRC signaling, so that the UE switches the DMRS configuration.

5. The device according to claim 4, characterized in that The UE location determination module includes: A channel quality parameter acquisition unit is used to obtain the signal-to-noise ratio of the PUSCH channel in the UE uplink, or the signal-to-noise ratio of the SRS signal; or obtain the CSI information in the UE downlink and obtain the cqi value from the CSI information; The UE position judgment unit is used to judge that the position of the UE is close to the base station if the signal-to-noise ratio of the PUSCH channel is higher than a preset first threshold, or the signal-to-noise ratio of the SRS signal is higher than a preset second threshold, or the cqi value is higher than a preset third threshold; otherwise, the position of the UE is judged to be far from the base station.

6. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable a computer of a base station to execute the method according to any one of claims 1 to 3.

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