Method, device, equipment and storage medium for suppressing Doppler frequency shift interference

Abstract

The present application relates to a method, apparatus, device, and storage medium for suppressing Doppler shift interference. The method comprises: obtaining the Doppler shift of a mobile communication device and a currently configured first subcarrier spacing; determining, based on the subcarrier spacing and the Doppler shift, that the communication quality of the mobile communication device is affected, and increasing the first subcarrier spacing of the mobile communication device to a second subcarrier spacing. By increasing the currently used subcarrier spacing, the present application suppresses Doppler interference in high-speed mobile communication devices, thereby achieving a better user experience.

Description

Technical Field

[0001] The present application relates to the field of mobile communication technology, and in particular to a method, apparatus, device and storage medium for suppressing Doppler frequency shift interference. Background Art

[0002] 5G is a next-generation broadband mobile communications technology characterized by high speed, low latency, and massive connectivity. It is the network infrastructure that enables the interconnection of humans, machines, and things. The 5G Internet of Everything (IoE), a hot design trend in the smart device industry, means that its use cases will also expand to high-speed mobile devices, such as high-speed trains and automobiles. 5G spectrum resources have also expanded from the sub-3GHz range of the 4G era to sub-6GHz and millimeter waves. Higher frequency bands and shorter wavelengths increase the sensitivity of high-speed mobile devices to Doppler shift.

[0003] Therefore, how to suppress the Doppler frequency shift interference of high-speed mobile communication devices is a technical problem that those skilled in the art need to solve urgently. Summary of the Invention

[0004] The present application provides a method, apparatus, device and storage medium for suppressing Doppler frequency shift interference, which are used to suppress Doppler frequency shift interference of a high-speed mobile communication device.

[0005] In a first aspect, an embodiment of the present application provides a method for suppressing Doppler shift interference, comprising:

[0006] Obtaining the Doppler frequency shift of a mobile communication device;

[0007] Obtaining a first subcarrier spacing currently configured for the mobile communication device;

[0008] When it is determined, based on the first subcarrier spacing and the Doppler shift, that the communication quality of the mobile communication device is affected, the first subcarrier spacing of the mobile communication device is increased to a second subcarrier spacing.

[0009] Optionally, the second subcarrier spacing satisfies: the cell coverage radius is maximized when the communication quality of the mobile communication device is not affected.

[0010] Optionally, the increasing the first subcarrier spacing of the mobile communication device to a second subcarrier spacing includes:

[0011] Obtaining subcarrier spacings of various levels preset by the mobile communication device; wherein the subcarrier spacings of various levels are sorted in ascending order;

[0012] Obtaining an i-th level subcarrier spacing from the subcarrier spacings at each level; wherein the i-th level subcarrier spacing is a subcarrier spacing at a level lower than the first subcarrier spacing;

[0013] Determining step: determining whether the communication quality of the mobile communication device is affected according to the i-th subcarrier spacing and the Doppler shift;

[0014] If yes, update i to i+1 and execute the judgment step;

[0015] If not, the i-th level subcarrier spacing is used as the second subcarrier spacing.

[0016] Optionally, the increasing the first subcarrier spacing of the mobile communication device to a second subcarrier spacing includes:

[0017] The Doppler frequency shift is divided by a preset ratio to obtain a critical subcarrier spacing; wherein the preset ratio is: when the Doppler frequency shift does not affect the communication quality of the mobile communication device, the Doppler frequency shift accounts for a critical ratio of the subcarrier spacing used by the mobile communication device;

[0018] determining that the critical subcarrier spacing is greater than or equal to the first subcarrier spacing;

[0019] The critical subcarrier spacing is used as the second subcarrier spacing.

[0020] Optionally, obtaining the Doppler frequency shift of the mobile communication device includes:

[0021] Obtaining a current operating carrier frequency of the mobile communication device and obtaining a moving speed of the mobile communication device;

[0022] Dividing the carrier frequency by the speed of light to obtain an intermediate calculation result;

[0023] The intermediate calculation result is multiplied by the moving speed to obtain the Doppler shift.

[0024] Optionally, determining, according to the first subcarrier spacing and the Doppler shift, that communication quality of the mobile communication device is affected includes:

[0025] Determining whether the Doppler shift is greater than or equal to a preset ratio of the first subcarrier spacing;

[0026] If yes, it is determined that the Doppler frequency shift affects the communication quality of the mobile communication device.

[0027] Optionally, after acquiring the moving speed of the mobile communication device and before increasing the first subcarrier spacing of the mobile communication device to a second subcarrier spacing, the method further includes:

[0028] It is determined that the moving speed is greater than a preset speed.

[0029] Optionally, after increasing the first subcarrier spacing of the mobile communication device to a second subcarrier spacing, the method further includes:

[0030] reporting the second subcarrier spacing to a base station;

[0031] After receiving the confirmation information of the second subcarrier spacing from the base station, the mobile communication device operates according to the second subcarrier spacing.

[0032] In a second aspect, an embodiment of the present invention provides an adjustment device for suppressing Doppler shift interference, the device comprising:

[0033] A first acquisition module is used to acquire the Doppler frequency shift of the mobile communication device;

[0034] A second acquisition module, configured to acquire a first subcarrier spacing currently configured for the mobile communication device;

[0035] An adjustment module is configured to increase the first subcarrier spacing of the mobile communication device to a second subcarrier spacing when determining, based on the first subcarrier spacing and the Doppler shift, that the communication quality of the mobile communication device is affected.

[0036] In a third aspect, an embodiment of the present invention provides a device comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the program, the method for suppressing Doppler frequency shift interference described in the first aspect is implemented.

[0037] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method for suppressing Doppler frequency shift interference described in the first aspect.

[0038] The above-mentioned technical solution provided by the embodiment of the present application has the following advantages over the prior art: the method provided by the embodiment of the present application, based on the first subcarrier spacing and Doppler frequency shift currently configured by the mobile communication device, determines that when the communication quality of the mobile communication device is affected, the first subcarrier spacing of the mobile communication device is increased to the second subcarrier spacing; the present application suppresses the Doppler interference of high-speed mobile communication devices by increasing the currently used subcarrier spacing, thereby obtaining a better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0041] Figure 1 A flowchart of a method for suppressing Doppler shift interference provided in an embodiment of the present application;

[0042] Figure 2 A flowchart of a specific adjustment method for suppressing Doppler shift interference provided in an embodiment of the present application;

[0043] Figure 3 A flowchart of a method for determining a second subcarrier spacing provided in an embodiment of the present application;

[0044] Figure 4 An overall flow chart of a method for suppressing Doppler shift interference provided in an embodiment of the present application;

[0045] Figure 5 A schematic structural diagram of an adjustment device for suppressing Doppler shift interference provided in an embodiment of the present application;

[0046] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0047] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] The methods provided in the embodiments of the present application can be applied to electronic devices, which can specifically be modules capable of implementing communication functions or terminal devices containing such modules, and the terminal devices can be mobile terminals or smart terminals. The mobile terminal can specifically be at least one of a mobile phone, a tablet computer, a laptop computer, etc.; the smart terminal can specifically be a terminal containing a wireless communication module, such as a smart car, a smart watch, a shared bicycle, a smart cabinet, etc.; the module can specifically be a wireless communication module, such as any one of a 2G communication module, a 3G communication module, a 4G communication module, a 5G communication module, an NB-IOT communication module, etc.

[0049] like Figure 1As shown, the embodiment of the present application provides a method for suppressing Doppler shift interference, which specifically includes the following steps:

[0050] Step 101, obtaining the Doppler frequency shift of the mobile communication device;

[0051] In a specific implementation, the Doppler shift of a mobile communication device can be obtained in the following manner: first, the current operating carrier frequency of the mobile communication device and the moving speed of the mobile communication device are obtained; the carrier frequency is divided by the speed of light to obtain an intermediate calculation result; and the intermediate calculation result is multiplied by the moving speed of the mobile communication device to obtain the Doppler shift of the mobile communication device.

[0052] The Doppler shift is the frequency distortion caused by the relative movement of the base station and the mobile communication device. To facilitate understanding of the method of obtaining the Doppler shift of a mobile device, an example is given below. For example, the current carrier frequency of the mobile communication device is 2700MHz, and the mobile communication device is moving at a speed of 360km / h, or 100m / s. Then, the carrier frequency is divided by the speed of light (3*10). 8 m / s, and the intermediate result is 9 Hz / m / s. Then the intermediate result is multiplied by the speed of the mobile communication device 100 m / s, and the Doppler frequency shift generated by the mobile communication device is obtained to be 900 Hz.

[0053] In a specific embodiment, the mobile communication device can be a mobile phone or a tablet computer; it can also be an Internet of Things device on a high-speed railway, an Internet of Things device for autonomous driving of cars on a highway, and an Internet of Things device for autonomous driving of low-altitude, high-speed aircraft in the future, etc., which is not limited here.

[0054] Step 102: Obtain a first subcarrier spacing currently configured for the mobile communication device;

[0055] Among them, the carrier is the concept of frequency domain resources in the communication system. The subcarrier spacing can be considered as a small segment of frequency domain resources that can be independently modulated. A subchannel has one or more subcarrier spacings, and the subcarrier spacing is a carrier.

[0056] The first subcarrier spacing is the subcarrier spacing currently configured on the mobile communication device. In practical applications, 5G NR has designed multiple subcarrier spacings. To ensure compatibility with LTE, the baseline subcarrier spacing remains 15 kHz, with a maximum supported spacing of 240 kHz. In 5G communication applications, 15 kHz is typically used as the first subcarrier spacing.

[0057] Step 103: When it is determined based on the first subcarrier spacing and the Doppler shift that the communication quality of the mobile communication device is affected, increase the first subcarrier spacing of the mobile communication device to a second subcarrier spacing.

[0058] In specific implementation, whether the communication quality of the mobile communication device is affected can be confirmed in the following ways: first, when the mobile communication device is powered on and in the network, the current working carrier frequency and the set subcarrier interval are obtained from the system, and the moving speed of the mobile communication device is obtained from the GPS system to determine whether the moving speed of the mobile communication device is greater than the preset speed, where the preset speed is 135km / h. When the moving speed of the mobile communication device is less than 135km / h, the Doppler frequency shift generated in the Sub-6GHz frequency band does not affect its communication quality. Wherein, the frequency band range of Sub-6GHz is 450MHz-6000MHz; when the moving speed of the mobile communication device is greater than the preset speed, the carrier frequency is divided by the speed of light to obtain an intermediate calculation result; the intermediate calculation result is multiplied by the moving speed of the mobile communication device to obtain the Doppler frequency shift of the mobile communication device, and it is determined whether the Doppler frequency shift is greater than or equal to the preset ratio of the first subcarrier interval; if so, it is determined that the Doppler frequency shift affects the communication quality of the mobile communication device; if not, it is determined that the communication quality of the mobile communication device is not affected by the Doppler frequency shift, wherein the preset ratio can be pre-set according to actual conditions, for example: the preset ratio is set to 5%.

[0059] In the embodiments of the present application, if the Doppler shift is less than 5% of the subcarrier spacing, it will not have an intolerable impact on system performance. Therefore, to examine whether the communication quality of a mobile communication device is affected by the Doppler shift, the Doppler shift is usually divided by the subcarrier spacing. If it is greater than or equal to 5%, the communication quality of the mobile communication device is affected by the Doppler shift. If it is less than 5%, the communication quality of the mobile communication device is not affected by the Doppler shift.

[0060] For ease of understanding, let's take an example: a mobile communication device using a 2700 MHz carrier frequency moves at a speed of 360 km / h. The resulting Doppler shift is approximately 900 Hz. The method for calculating the Doppler shift can be found in step 101. The mobile communication device is currently configured with a first subcarrier spacing of 15 kHz. 900 Hz is 6% of the 15 kHz subcarrier spacing. Therefore, the performance of the mobile communication device in this scenario is not guaranteed. If a 30 kHz subcarrier spacing is used, 900 Hz is 3% of the 30 kHz subcarrier spacing, and the performance of the mobile communication device is guaranteed.

[0061] In practical applications, to better ensure the communication quality of the communication system, the second subcarrier spacing must meet the requirements of maximizing the cell coverage radius without affecting the communication quality of mobile communication devices. In specific implementations, multiple methods can be used to determine the second subcarrier spacing, as follows:

[0062] The first one is combined Figure 2To illustrate, first, obtain the subcarrier spacings of each level preset for the mobile communication device, where the subcarrier spacings of each level are arranged in ascending order; obtain the i-th level subcarrier spacing from the subcarrier spacings of each level, where the i-th level subcarrier spacing is the subcarrier spacing of the next level below the first subcarrier spacing; determine whether the communication quality of the mobile communication device is affected based on the i-th level subcarrier spacing and the Doppler shift; if so, update i to i+1, that is, increase the subcarrier spacing by one level, and determine again whether the communication quality of the mobile communication device is affected based on the updated subcarrier spacing and the Doppler shift; if not, use the i-th level subcarrier spacing as the second subcarrier spacing, and the second subcarrier spacing is the optimal subcarrier spacing.

[0063] Among them, the subcarrier intervals at each level are 15KHz, 30KHz, 60KHz, 120KHz, and 240KHz, with a total of 5 levels.

[0064] In an embodiment of the present application, if a mobile communication device using a 4800MHz carrier frequency moves at a speed of 360km / h, the generated Doppler shift is approximately 1600Hz. If the first subcarrier spacing is set to 15KHz, 1600Hz is 10.7% of the 15KHz subcarrier spacing, and the Doppler shift is greater than the preset proportion of 5% of the first subcarrier spacing. Therefore, the Doppler shift has an intolerable impact on the system performance of the mobile communication device. The first subcarrier spacing of 15KHz is updated to the next level subcarrier spacing of 30KHz, and 1600Hz is 10.7% of the 30KHz subcarrier spacing. The Doppler shift is determined to be 5.3% of the first subcarrier spacing, and the Doppler shift is further determined to be greater than the preset proportion of 5% of the first subcarrier spacing. Therefore, the Doppler shift will still have an intolerable impact on the system performance of the mobile communication device. The currently configured first subcarrier spacing (30 kHz) is further updated to the next-level subcarrier spacing of 60 kHz. 1600 Hz is 2.7% of the 60 kHz subcarrier spacing. At this time, it is determined that the Doppler shift is less than the preset proportion of 5% of the first subcarrier spacing. Therefore, the performance of the mobile communication device in the current scenario is guaranteed, so the 60 kHz subcarrier spacing is used as the second subcarrier spacing.

[0065] In an embodiment of the present application, a determination is made as to whether the first subcarrier spacing and Doppler shift affect the communication quality of a mobile communication device. If the communication quality of the mobile communication device is affected, the first subcarrier spacing is automatically increased to the next subcarrier spacing and the determination is repeated until the communication quality of the mobile communication device is not affected, thereby determining the second subcarrier spacing. The method provided in the embodiment of the present application selects the optimal subcarrier spacing by determining whether the subcarrier spacing is appropriate step by step. This method not only suppresses Doppler interference for high-speed mobile communication devices, but also ensures that high-speed mobile communication devices obtain the best communication quality by determining the optimal subcarrier spacing, while also ensuring that the base station cell coverage radius is maximized.

[0066] The second is combined Figure 3 Another method for determining the second subcarrier spacing is described, which specifically includes the following steps:

[0067] Step 301: Dividing the Doppler frequency shift by a preset ratio to obtain a critical subcarrier spacing, wherein the preset ratio is a critical ratio of the Doppler frequency shift to the subcarrier spacing used by the mobile communication device when the Doppler frequency shift does not affect the communication quality of the mobile communication device;

[0068] Step 302: determine whether the critical subcarrier spacing is greater than or equal to the first subcarrier spacing;

[0069] Step 303: Use the critical subcarrier spacing as the second subcarrier spacing.

[0070] In an embodiment of the present application, if a mobile communication device using a 4500 MHz carrier frequency moves at a speed of 360 km / h, the resulting Doppler shift is approximately 1500 Hz. The critical subcarrier spacing is the Doppler shift of 1500 Hz divided by a preset ratio of 5%, resulting in a critical subcarrier spacing of 30 kHz. If the currently set subcarrier spacing is 15 kHz, the calculated critical subcarrier spacing of 30 kHz is greater than the first subcarrier spacing of 15 kHz, and the critical subcarrier spacing of 30 kHz is used as the second subcarrier spacing.

[0071] In a specific implementation, the critical subcarrier spacing can be obtained by reverse deduction based on the Doppler frequency shift and the preset ratio. This method can directly update the first subcarrier spacing to the critical subcarrier spacing, reducing the process of increasing each level in order from small to large and repeatedly judging whether it affects the communication quality, thereby improving the efficiency of subcarrier adjustment. The method provided in the embodiment of the present application obtains the critical subcarrier spacing by reverse deduction and updates the first subcarrier spacing to the critical subcarrier spacing. This can not only suppress the Doppler interference of high-speed mobile communication devices, but also ensure that high-speed mobile communication devices obtain the best communication quality by determining the optimal subcarrier spacing, while ensuring that the base station cell coverage radius is maximized.

[0072] Furthermore, it should be noted that the above-described method for suppressing Doppler shift interference can be applied to a mobile communication device and a base station connected to the mobile communication device. When the first subcarrier spacing is adjusted to the second subcarrier spacing, the second subcarrier spacing is reported to the base station. Upon receiving confirmation of the second subcarrier spacing, i.e., with permission from the base station, the mobile communication device may operate according to the second subcarrier spacing.

[0073] In an embodiment of the present application, by obtaining the Doppler frequency shift and the currently configured subcarrier spacing of the mobile communication device, when it is determined that the communication quality of the mobile communication device is affected, the first subcarrier spacing of the mobile communication device is increased to the second subcarrier spacing, thereby suppressing the interference of the Doppler frequency shift and obtaining a better user experience.

[0074] In order to further facilitate understanding of the method for suppressing Doppler frequency shift interference provided in the embodiment of the present application, Figure 4 Provide further explanation.

[0075] First, power on the mobile communication device and connect it to the network. Obtain the current carrier frequency and subcarrier spacing from the mobile communication device system, and the mobile communication device's speed from the mobile communication device's GPS system. Determine whether the current mobile communication device speed is greater than 135 km / h. If the mobile communication device speed is less than 135 km / h, the communication quality of the mobile communication device is generally unaffected, and the currently configured first subcarrier spacing can be maintained. In 5G communication applications, the first subcarrier spacing is typically 15 kHz.

[0076] When the moving speed of the mobile communication device is greater than or equal to 135 km / h, the current Doppler shift of the mobile communication device is calculated based on the current carrier frequency obtained in the mobile communication device and the moving speed of the mobile communication device, and then a judgment step is entered, wherein the judgment step includes: judging whether the Doppler shift affects the communication quality of the mobile communication device. Specifically, the judgment of whether the Doppler shift affects the communication quality of the mobile communication device can be performed by judging whether the Doppler shift is within a preset ratio range of the first subcarrier spacing. If so, the communication quality of the mobile communication device is not affected, and the currently configured first subcarrier spacing is maintained and fed back to the system. If not, the communication quality of the mobile communication device is affected by the Doppler shift, and the subcarrier spacing is increased. The increased subcarrier spacing is fed back to the system and used as the current subcarrier spacing. The Doppler shift is again judged based on the current carrier, moving speed, and subcarrier spacing. If so, the subcarrier spacing is further increased until it is determined that the Doppler shift does not affect the communication quality based on the current carrier, moving speed, and subcarrier spacing.

[0077] Based on the same concept, an adjustment device for suppressing Doppler frequency shift interference is provided in the embodiment of the present application. The specific implementation of the device can be found in the description of the method embodiment part, and the repeated parts will not be repeated. Figure 5 As shown, the device mainly includes:

[0078] A first acquisition module 501 is configured to acquire a Doppler frequency shift of a mobile communication device;

[0079] A second acquisition module 502 is configured to acquire a first subcarrier spacing currently configured for the mobile communication device;

[0080] The adjustment module 503 is configured to increase the first subcarrier spacing of the mobile communication device to a second subcarrier spacing when determining, based on the first subcarrier spacing and the Doppler shift, that the communication quality of the mobile communication device is affected.

[0081] In a specific embodiment, the second subcarrier spacing satisfies: when the communication quality of the mobile communication device is not affected, the cell coverage radius is maximized.

[0082] In a specific embodiment, the adjustment module 503 is used to obtain the subcarrier spacings of each level preset by the mobile communication device; wherein the subcarrier spacings of each level are sorted in ascending order; obtain the i-th level subcarrier spacing from the subcarrier spacings of each level; wherein the i-th level subcarrier spacing is the subcarrier spacing of the next level below the first subcarrier spacing; and determine whether the communication quality of the mobile communication device is affected based on the i-th level subcarrier spacing and the Doppler frequency shift; if so, update i to i+1 and execute the determination step; if not, use the i-th level subcarrier spacing as the second subcarrier spacing.

[0083] In a specific embodiment, the adjustment module 503 is configured to obtain a critical subcarrier spacing by dividing the Doppler frequency shift by a preset ratio; wherein the preset ratio is: when the Doppler frequency shift does not affect the communication quality of the mobile communication device, the Doppler frequency shift accounts for a critical ratio of the subcarrier spacing used by the mobile communication device; determine that the critical subcarrier spacing is greater than or equal to the first subcarrier spacing; and use the critical subcarrier spacing as the second subcarrier spacing.

[0084] In a specific embodiment, the first acquisition module 501 is used to obtain the current operating carrier frequency of the mobile communication device and the moving speed of the mobile communication device; divide the carrier frequency by the speed of light to obtain an intermediate calculation result; and multiply the intermediate calculation result by the moving speed to obtain the Doppler frequency shift.

[0085] In a specific embodiment, the adjustment module 503 is configured to determine whether the Doppler frequency shift is greater than or equal to a preset ratio of the first subcarrier spacing; if so, determine that the Doppler frequency shift affects the communication quality of the mobile communication device.

[0086] In a specific embodiment, the adjustment device for suppressing Doppler frequency shift interference provided by the embodiment of the present application further includes: a determination module, configured to determine that the moving speed is greater than a preset speed.

[0087] In a specific embodiment, an adjustment device for suppressing Doppler frequency shift interference provided in an embodiment of the present application also includes: a confirmation module, which is used to report the second subcarrier spacing to the base station after increasing the first subcarrier spacing of the mobile communication device to the second subcarrier spacing; when receiving the confirmation information of the base station on the second subcarrier spacing, the mobile communication device operates according to the second subcarrier spacing.

[0088] Based on the same concept, an electronic device is also provided in the embodiment of the present application, such as Figure 6 As shown, the electronic device mainly includes: a processor 601, a memory 602 and a communication bus 603, wherein the processor 601 and the memory 602 communicate with each other via the communication bus 603. The memory 602 stores a program that can be executed by the processor 601, and the processor 601 executes the program stored in the memory 602 to implement the following steps:

[0089] Obtaining the Doppler frequency shift of a mobile communication device;

[0090] Obtaining a first subcarrier spacing currently configured for the mobile communication device;

[0091] When it is determined, based on the first subcarrier spacing and the Doppler shift, that the communication quality of the mobile communication device is affected, the first subcarrier spacing of the mobile communication device is increased to a second subcarrier spacing.

[0092] The communication bus 603 mentioned in the above electronic device can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The communication bus 603 can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0093] The memory 602 may include a random access memory (RAM) or a non-volatile memory, such as at least one disk storage. Alternatively, the memory may be at least one storage device located away from the processor 601.

[0094] The above-mentioned processor 601 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc., and can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, and discrete hardware components.

[0095] In another embodiment of the present application, a computer-readable storage medium is provided, which stores a computer program. When the computer program runs on a computer, the computer executes a method for suppressing Doppler frequency shift interference described in the above embodiment.

[0096] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions are transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape, etc.), an optical medium (e.g., a DVD) or a semiconductor medium (e.g., a solid-state hard disk), etc.

[0097] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0098] The foregoing description is intended only to provide specific embodiments of the present invention, which will enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but is intended to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for suppressing Doppler shift interference, characterized in that: include: Obtaining a Doppler shift of a mobile communication device; wherein obtaining the Doppler shift of the mobile communication device comprises: obtaining a currently operating carrier frequency of the mobile communication device and obtaining a moving speed of the mobile communication device; dividing the carrier frequency by the speed of light to obtain an intermediate calculation result; and multiplying the intermediate calculation result by the moving speed to obtain the Doppler shift; Obtaining a first subcarrier spacing currently configured for the mobile communication device; When it is determined, based on the first subcarrier spacing and the Doppler frequency shift, that the communication quality of the mobile communication device is affected, if it is determined that the moving speed is greater than a preset speed, the first subcarrier spacing of the mobile communication device is increased to a second subcarrier spacing; wherein the increasing the first subcarrier spacing of the mobile communication device to the second subcarrier spacing includes: dividing the Doppler frequency shift by a preset ratio to obtain a critical subcarrier spacing; wherein the preset ratio is: when the Doppler frequency shift does not affect the communication quality of the mobile communication device, the Doppler frequency shift accounts for a critical ratio of the subcarrier spacing used by the mobile communication device; determining that the critical subcarrier spacing is greater than or equal to the first subcarrier spacing; and using the critical subcarrier spacing as the second subcarrier spacing; The determining, based on the first subcarrier spacing and the Doppler shift, that the communication quality of the mobile communication device is affected includes: Determining whether the Doppler shift is greater than or equal to a preset ratio of the first subcarrier spacing; If yes, it is determined that the Doppler frequency shift affects the communication quality of the mobile communication device.

2. The method for suppressing Doppler shift interference according to claim 1, wherein: The second subcarrier spacing satisfies: when the communication quality of the mobile communication device is not affected, the cell coverage radius is maximized.

3. The method for suppressing Doppler shift interference according to claim 1, wherein: Increasing the first subcarrier spacing of the mobile communication device to a second subcarrier spacing includes: Obtaining subcarrier spacings of various levels preset by the mobile communication device; wherein the subcarrier spacings of various levels are sorted in ascending order; Obtaining an i-th level subcarrier spacing from the subcarrier spacings at each level; wherein the i-th level subcarrier spacing is a subcarrier spacing at a level lower than the first subcarrier spacing; Determining step: determining whether the communication quality of the mobile communication device is affected according to the i-th subcarrier spacing and the Doppler shift; If yes, update i to i+1 and execute the judgment step; If not, the i-th level subcarrier spacing is used as the second subcarrier spacing.

4. The method for suppressing Doppler shift interference according to any one of claims 1 to 3, characterized in that: After increasing the first subcarrier spacing of the mobile communication device to a second subcarrier spacing, the method further includes: reporting the second subcarrier spacing to a base station; After receiving the confirmation information of the second subcarrier spacing from the base station, the mobile communication device operates according to the second subcarrier spacing.

5. An adjustment device for suppressing Doppler frequency shift interference, characterized in that: include: A first acquisition module is configured to acquire a Doppler shift of a mobile communication device; wherein acquiring the Doppler shift of the mobile communication device comprises: acquiring a current operating carrier frequency of the mobile communication device and a moving speed of the mobile communication device; dividing the carrier frequency by the speed of light to obtain an intermediate calculation result; and multiplying the intermediate calculation result by the moving speed to obtain the Doppler shift; A second acquisition module, configured to acquire a first subcarrier spacing currently configured for the mobile communication device; an adjustment module, configured to, when determining, based on the first subcarrier spacing and the Doppler shift, that the communication quality of the mobile communication device is affected, increase the first subcarrier spacing of the mobile communication device to a second subcarrier spacing if it is determined that the moving speed is greater than a preset speed; wherein increasing the first subcarrier spacing of the mobile communication device to the second subcarrier spacing includes: dividing the Doppler shift by a preset ratio to obtain a critical subcarrier spacing; wherein the preset ratio is: when the Doppler shift does not affect the communication quality of the mobile communication device, the Doppler shift accounts for a critical ratio of the subcarrier spacing used by the mobile communication device; determining that the critical subcarrier spacing is greater than or equal to the first subcarrier spacing; and using the critical subcarrier spacing as the second subcarrier spacing; wherein determining, based on the first subcarrier spacing and the Doppler shift, that the communication quality of the mobile communication device is affected includes: determining whether the Doppler shift is greater than or equal to the preset ratio of the first subcarrier spacing; and if so, determining that the Doppler shift affects the communication quality of the mobile communication device.

6. An electronic device, characterized in that: include: A processor, a memory, and a communication bus, wherein the processor and the memory communicate with each other via the communication bus; The memory is used to store computer programs; The processor is configured to execute the program stored in the memory to implement the method for suppressing Doppler frequency shift interference according to any one of claims 1 to 4.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for suppressing Doppler shift interference according to any one of claims 1 to 4 is implemented.

Images