Frequency offset compensation method and communication equipment

Abstract

The invention provides a frequency offset compensation method and communication equipment, and relates to the technical field of communication, and the method comprises the steps: receiving first information sent by terminal equipment, the first information is used for indicating at least one of the following items: the location positioning capability of the terminal equipment, the speed acquisition capability of the terminal equipment, the frequency offset tracking capability of the terminal equipment and at least one item of frequency offset compensation required by the network equipment; and judging whether to perform downlink frequency offset compensation on the downlink signal based on the first information, and performing downlink frequency offset compensation on the first downlink signal when the judgment result is that the downlink frequency offset compensation needs to be performed, so that the frequency offset can be inhibited, and the communication performance can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a frequency offset compensation method and communication equipment. Background Art

[0002] The frequency received by the receiving end is different from the frequency of the signal transmitted by the transmitting end due to some reasons (for example, the transmitting end and the receiving end move relative to each other, etc.), which is called frequency deviation. The occurrence of frequency deviation can easily lead to a decrease in communication performance. Summary of the invention

[0003] The embodiments of the present application provide a frequency offset compensation method, a frequency offset compensation method and a communication device to solve the problem of reduced communication performance caused by existing frequency offset.

[0004] To solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a frequency offset compensation method, which is applied to a network device, and the method includes:

[0006] Receive first information sent by a terminal device, where the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation;

[0007] Based on the first information, determining whether to perform downlink frequency offset compensation on the first downlink signal;

[0008] When the judgment result is that downlink frequency offset compensation is required, downlink frequency offset compensation is performed on the first downlink signal.

[0009] In a second aspect, an embodiment of the present application provides a frequency offset compensation method, which is applied to a terminal device, and the method includes:

[0010] Sending first information to the network device, wherein the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation;

[0011] Receive a downlink signal sent by the network device after performing downlink frequency offset compensation based on the first information.

[0012] In a third aspect, an embodiment of the present application provides a frequency offset compensation method, which is applied to a terminal device, and the method includes:

[0013] Receiving auxiliary information sent by network equipment;

[0014] Based on the auxiliary information and the status information of the terminal device, determining whether to perform uplink frequency offset pre-compensation on the first uplink signal;

[0015] When the judgment result is that uplink frequency offset pre-compensation is required, uplink frequency offset pre-compensation is performed on the first uplink signal.

[0016] In a fourth aspect, an embodiment of the present application provides a frequency offset compensation method, which is applied to a network device, and the method includes:

[0017] Auxiliary information is sent to a terminal device, where the auxiliary information is used by the terminal device to determine whether to perform uplink frequency offset pre-compensation on a first uplink signal, and if the determination result is that uplink frequency offset pre-compensation is required, the uplink frequency offset pre-compensation is performed on the first uplink signal.

[0018] In a fifth aspect, an embodiment of the present application provides a frequency offset compensation device, which is applied to a network device, and the device includes:

[0019] A first receiving module, configured to receive first information sent by a terminal device, wherein the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation;

[0020] A first judgment module, configured to judge whether to perform downlink frequency offset compensation on the first downlink signal based on the first information;

[0021] The first compensation module is configured to perform downlink frequency offset compensation on the first downlink signal when a judgment result shows that downlink frequency offset compensation is required.

[0022] In a sixth aspect, an embodiment of the present application provides a frequency offset compensation device, applied to a terminal device, the device comprising:

[0023] A first sending module is used to send first information to the network device, wherein the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation;

[0024] The second receiving module is used to receive a downlink signal sent by the network device after performing downlink frequency offset compensation based on the first information.

[0025] In a seventh aspect, an embodiment of the present application provides a frequency offset compensation device, applied to a terminal device, the device comprising:

[0026] A third receiving module, used to receive the auxiliary information sent by the network device;

[0027] A second judgment module, used for judging whether to perform uplink frequency offset pre-compensation on the first uplink signal based on the auxiliary information and the status information of the terminal device;

[0028] The second compensation module is configured to perform uplink frequency offset pre-compensation on the first uplink signal when a judgment result shows that uplink frequency offset pre-compensation is required.

[0029] In an eighth aspect, an embodiment of the present application provides a frequency offset compensation device, which is applied to a network device, and the device includes:

[0030] The second sending module is used to send auxiliary information to the terminal device, and the auxiliary information is used by the terminal device to determine whether to pre-compensate the first uplink signal for uplink frequency offset, and if the judgment result is that uplink frequency offset pre-compensation is required, pre-compensate the first uplink signal for uplink frequency offset.

[0031] In a ninth aspect, an embodiment of the present application provides a communication device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the frequency offset compensation method described in the first aspect above.

[0032] In the tenth aspect, an embodiment of the present application provides another communication device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the frequency offset compensation method described in the second aspect above.

[0033] In the eleventh aspect, an embodiment of the present application provides a communication device, comprising: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the frequency offset compensation method described in the third aspect above.

[0034] In the twelfth aspect, an embodiment of the present application provides another communication device, including: a processor, a memory, and a program stored in the memory and executable on the processor, wherein the program, when executed by the processor, implements the steps of the frequency offset compensation method described in the fourth aspect.

[0035] In the thirteenth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the frequency offset compensation method described in the first aspect are implemented; or when the computer program is executed by a processor, the steps of the frequency offset compensation method described in the second aspect are implemented; or when the computer program is executed by a processor, the steps of the frequency offset compensation method described in the third aspect are implemented; when the computer program is executed by a processor, the steps of the frequency offset compensation method described in the fourth aspect are implemented.

[0036] In the frequency offset compensation method of the present embodiment, the terminal device reports first information to the network device, and the first information includes at least one of a capability for indicating the location of the terminal device, a capability for obtaining the speed of the terminal device, a frequency offset tracking capability of the terminal device, and a need for the network device to perform frequency offset compensation. When the network device needs to send a downlink signal, it can determine in advance whether to perform frequency offset compensation on the downlink signal based on the first information. When the judgment result is that downlink frequency offset compensation is required, downlink frequency offset compensation can be performed on the uplink signal to suppress the occurrence of frequency offset, thereby improving communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 This is one of the flow charts of a frequency offset compensation method provided in an embodiment of the present application;

[0039] Figure 2 This is a second flow chart of a frequency offset compensation method provided in an embodiment of the present application;

[0040] Figure 3 This is a third flow chart of a frequency offset compensation method provided in an embodiment of the present application;

[0041] Figure 4 This is a fourth flow chart of a frequency offset compensation method provided in an embodiment of the present application;

[0042] Figure 5 This is one of the SSB sending principle diagrams provided in the embodiments of the present application;

[0043] Figure 6 This is the second schematic diagram of sending SSB provided in an embodiment of the present application;

[0044] Figure 7This is one of the module schematic diagrams of a frequency offset compensation device provided in an embodiment of the present application;

[0045] Figure 8 This is the second module schematic diagram of a frequency offset compensation device provided in an embodiment of the present application;

[0046] Fig. 9 This is a third module schematic diagram of a frequency offset compensation device provided in an embodiment of the present application;

[0047] Fig.10 This is a fourth module schematic diagram of a frequency offset compensation device provided in an embodiment of the present application;

[0048] Fig.11 It is a structural diagram of a network device provided in an embodiment of the present application;

[0049] Fig.12 It is a structural diagram of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] See also Figure 1 , Figure 1 is a flow chart of a frequency offset compensation method provided in an embodiment of the present application, which is executed by a network device, wherein the network device may be a base station, etc. Figure 1 As shown, the frequency offset compensation method provided in this embodiment includes the following steps:

[0052] Step 101: receiving first information sent by a terminal device, where the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for frequency deviation compensation by a network device;

[0053] Step 102: Based on the first information, determine whether to perform downlink frequency offset compensation on the first downlink signal;

[0054] Step 103: When the judgment result is that downlink frequency offset compensation is required, downlink frequency offset compensation is performed on the first downlink signal.

[0055] It should be noted that the first downlink signal can be any downlink signal that the network device needs to send to the terminal device. The judgment result in this embodiment can be understood as a downlink judgment result. When downlink frequency offset compensation is required, after the first downlink signal is frequency offset compensated, the signal after the frequency offset compensation of the first downlink signal can be sent to the terminal device.

[0056] It can be understood that the first information can be used to indicate the location positioning capability of the terminal device, that is, to indicate whether the terminal device has the location positioning capability. For example, different values ​​of the first information can indicate different results. If the terminal device does not have the location positioning capability, the first information reported as the first value can indicate that the terminal device does not have the location positioning capability. If the terminal device has the location positioning capability, the first information reported as the second value can indicate that the terminal device has the location positioning capability.

[0057] The first information can also be used to indicate the speed acquisition capability of the terminal device, that is, to indicate whether the terminal device has the ability to acquire speed. The speed here refers to the speed of the terminal device. For example, different values ​​of the first information can indicate different results of whether the ability to acquire speed is available. If the terminal device does not have the ability to acquire speed, the first information reported as the third value can be used to indicate that the terminal device does not have the ability to acquire speed. If the terminal device has the ability to acquire speed, the first information reported as the fourth value can be used to indicate that the terminal device has the ability to acquire speed.

[0058] The first information can also be used to indicate the frequency deviation tracking capability of the terminal device, that is, to indicate whether the terminal device has the frequency deviation tracking capability. For example, different values ​​of the first information can be used to indicate different results of whether the terminal device has the frequency deviation tracking capability. For example, if the terminal device does not have the frequency deviation tracking capability, the first information reported as the fifth value can be used to indicate that the terminal device does not have the frequency deviation tracking capability. If the terminal device has the frequency deviation tracking capability, the first information reported as the sixth value can be used to indicate that the terminal device has the frequency deviation tracking capability.

[0059] The first information may also be used to indicate that the network device needs to perform frequency offset compensation.

[0060] In the frequency offset compensation method of the present embodiment, the terminal device reports first information to the network device, and the first information includes at least one of a capability that can be used to indicate the location of the terminal device, an capability of obtaining the speed of the terminal device, a frequency offset tracking capability of the terminal device, and a need for the network device to perform frequency offset compensation. When the network device needs to send a downlink signal, it can determine in advance whether to perform frequency offset compensation on the downlink signal based on the first information. When the judgment result is that downlink frequency offset compensation is required, downlink frequency offset compensation can be performed on the uplink signal to suppress the occurrence of frequency offset, thereby improving communication performance.

[0061] In one embodiment, when the first information satisfies the first condition, the judgment result is that downlink frequency offset compensation needs to be performed;

[0062] The first condition includes but is not limited to at least one of the following:

[0063] The terminal device does not have the ability to locate the location;

[0064] The terminal device does not have the ability to obtain speed;

[0065] The terminal equipment does not have enhanced frequency deviation tracking capability;

[0066] The first information indicates that the network device needs to perform frequency offset compensation.

[0067] It can be understood that when the first information reported by the terminal device indicates that the terminal device does not have the ability to locate the position, the terminal device does not have the ability to obtain the speed, the terminal device does not have the enhanced frequency deviation tracking capability and the network device needs to perform at least one of frequency deviation compensation, the network device can determine that downlink frequency deviation compensation is required. That is, when the first information meets the first condition, the network device can determine that the network device needs to perform downlink frequency deviation compensation, and the judgment result that downlink frequency deviation compensation is required can be obtained. In this case, the network device can perform downlink frequency deviation compensation on the downlink signal to suppress frequency deviation and improve communication performance.

[0068] It should be noted that the enhanced frequency offset tracking capability can be understood as a frequency offset tracking capability that can be jointly performed based on multiple reference signals.

[0069] In one embodiment, when the judgment result is that downlink frequency offset compensation is required, performing downlink frequency offset compensation on the first downlink signal includes:

[0070] Based on the frequency offset value corresponding to the first message block, the first downlink signal is frequency offset compensated, and a second downlink signal after the frequency offset compensation is performed on the first downlink signal is sent to the terminal device;

[0071] Among them, the physical random access channel (PRACH) resource corresponding to the first message block is the PRACH resource for uplink transmission from the terminal device to the network device.

[0072] It can be understood that before random access, the terminal device can select a message block (for example, a synchronization signal block (SSB)) and use the PRACH resources corresponding to the selected message block for uplink transmission. Different message blocks have corresponding frequency deviation values. When the network device determines that downlink frequency deviation compensation is required, it can use the frequency deviation value corresponding to the first message block selected by the terminal device to perform frequency deviation compensation on the first downlink signal to obtain a second downlink reference signal, and send the second downlink signal after frequency deviation compensation to the terminal device to reduce the signal transmission frequency deviation.

[0073] In one embodiment, after determining whether to perform downlink frequency offset compensation on the first downlink signal based on the first information, the method further includes:

[0074] When the judgment result is that downlink frequency offset compensation is not required, a first downlink signal is sent to the terminal device, wherein the first downlink signal does not perform downlink frequency offset compensation.

[0075] It can be understood that in this embodiment, the network device determines that no downlink frequency offset compensation is required based on the first information, and the network device does not perform frequency offset compensation on the first downlink signal, but sends it to the terminal device, which can save computing resources on the network device side.

[0076] In one embodiment, when the first information satisfies the second condition, the judgment result is that downlink frequency offset compensation is not required;

[0077] The second condition includes but is not limited to at least one of the following:

[0078] The terminal device has the ability to locate the position and obtain the speed;

[0079] The terminal equipment has enhanced frequency deviation tracking capability.

[0080] That is, if the terminal device has the capability of positioning and obtaining speed, and / or the terminal device has enhanced frequency deviation tracking capability, then the terminal device can perform frequency deviation compensation according to its own capability. In this way, the network device may not perform frequency deviation compensation for the first downlink signal. That is, when the first information satisfies the second condition, the network device can determine that the network device does not need to perform downlink frequency deviation compensation, and thus obtain a judgment result that downlink frequency deviation compensation is not needed. In this case, the network device only needs to send the first downlink signal to the terminal device to save computing resources on the network device side.

[0081] In one embodiment, when the judgment result is that downlink frequency offset compensation is required, performing downlink frequency offset compensation on the first downlink signal includes:

[0082] When the first information indicates that the network device needs to perform frequency offset compensation and the first information indicates a frequency offset compensation value, frequency offset compensation is performed on the first downlink signal according to the frequency offset compensation value indicated by the first information, and a third downlink signal after frequency offset compensation is sent to the terminal device;

[0083] When the first information indicates that the network device needs to perform frequency offset compensation and does not indicate a frequency offset compensation value, frequency offset compensation is performed on the first downlink signal according to a measurement result, and a fourth downlink signal after frequency offset compensation is sent to the terminal device, wherein the measurement result includes but is not limited to at least one of the following:

[0084] A quality measurement value obtained by the terminal device measuring the downlink reference signal;

[0085] A quality measurement value obtained by measuring an uplink reference signal by a network device;

[0086] The frequency deviation value obtained by the network device through channel estimation of the uplink channel.

[0087] It can be understood that in this embodiment, if the first information indicates that the network device needs to perform frequency offset compensation, the network device can determine that downlink frequency offset compensation needs to be performed, and the judgment result is that downlink frequency offset compensation needs to be performed. Specifically, the first information can indicate that the network device needs to perform frequency offset compensation, and indicate the frequency offset compensation value, so that the network device can use the frequency offset compensation value indicated by it to perform frequency offset compensation on the first downlink signal, and send a third downlink signal to the terminal device after frequency offset compensation is performed on the first downlink signal according to the frequency offset compensation value. Whereas in the case where the first information indicates that the network device needs to perform frequency offset compensation, but does not indicate the frequency offset compensation value, the network device can use the above-mentioned measurement result reported by the above-mentioned terminal device to perform frequency offset compensation on the first downlink signal, and send a fourth downlink signal to the terminal device after frequency offset compensation is performed on the first downlink signal according to the measurement result. That is, different methods can be used to perform frequency offset compensation according to different indication results of the first information to improve the flexibility of frequency offset compensation.

[0088] In one embodiment, frequency offset compensation is performed on the first downlink signal according to the measurement result, including:

[0089] determining the moving speed of the terminal device according to the measurement result;

[0090] Determining a first frequency offset compensation value based on the moving speed;

[0091] Frequency offset compensation is performed on the first downlink signal based on the first frequency offset compensation value.

[0092] When the first information indicates that the network device needs to perform frequency offset compensation and does not indicate the frequency offset compensation value, the moving speed of the terminal device can be determined using the above measurement results.

[0093] That is, the network device can estimate the moving speed of the terminal device using the measurement result, and determine the first frequency offset compensation value based on the moving speed to perform frequency offset compensation on the first downlink signal. In this way, the frequency offset compensation can be more adapted to the moving speed of the terminal device, thereby improving the accuracy of the frequency offset compensation.

[0094] See also Figure 2 , Figure 2 is a flow chart of a frequency offset compensation method provided in an embodiment of the present application, which is executed by a terminal device, such as Figure 2 As shown, the frequency offset compensation method provided in this embodiment includes the following steps:

[0095] Step 201: Sending first information to a network device, wherein the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for frequency deviation compensation by the network device;

[0096] Step 202: receiving a downlink signal sent by a network device after performing downlink frequency offset compensation based on first information.

[0097] In one embodiment, receiving a downlink signal sent by a network device after performing downlink frequency offset compensation based on first information includes:

[0098] A downlink signal sent by a receiving network device after performing downlink frequency offset compensation on the first downlink signal when the first information satisfies the first condition;

[0099] The first condition includes but is not limited to at least one of the following:

[0100] The terminal device does not have the ability to locate the location;

[0101] The terminal device does not have the ability to obtain speed;

[0102] The terminal equipment does not have enhanced frequency deviation tracking capability;

[0103] The first information indicates that the network device needs to perform frequency offset compensation.

[0104] In one embodiment, receiving a downlink signal sent by a network device after performing downlink frequency offset compensation on a first downlink signal when the first information satisfies a first condition includes:

[0105] The receiving network device sends a second downlink signal after performing downlink frequency offset compensation on the first downlink signal based on the frequency offset value corresponding to the first message block when the first information satisfies the first condition;

[0106] Among them, the physical random access channel PRACH resource corresponding to the first message block is the PRACH resource for uplink transmission from the terminal device to the network device.

[0107] In one embodiment, the first information indicates that the network device needs to perform frequency offset compensation;

[0108] Receiving a downlink signal sent by a network device after performing downlink frequency offset compensation based on first information, including:

[0109] A third downlink signal is sent by receiving a network device after performing downlink frequency offset compensation on the first downlink signal based on the frequency offset compensation value indicated by the first information; or

[0110] A fourth downlink signal is sent by the receiving network device after performing downlink frequency offset compensation on the first downlink signal based on the measurement result, wherein the measurement result includes but is not limited to at least one of the following:

[0111] A quality measurement value obtained by the terminal device measuring the downlink reference signal;

[0112] A quality measurement value obtained by measuring an uplink reference signal by a network device;

[0113] The frequency deviation value obtained by the network device through channel estimation of the uplink channel.

[0114] See also Figure 3 , Figure 3 is a flow chart of a frequency offset compensation method provided in an embodiment of the present application, which is executed by a terminal device, such as Figure 3 As shown, the frequency offset compensation method provided in this embodiment includes the following steps:

[0115] Step 301: receiving auxiliary information sent by a network device;

[0116] Step 302: Based on the auxiliary information and the state information of the terminal device, determine whether to perform uplink frequency offset pre-compensation on the first uplink signal;

[0117] Step 303: When the judgment result is that uplink frequency offset pre-compensation is required, uplink frequency offset pre-compensation is performed on the first uplink signal.

[0118] It should be noted that the uplink frequency offset pre-compensation for the uplink signal can be understood as performing frequency offset compensation on the uplink signal before sending the uplink signal to the network device, and then transmitting the uplink signal after frequency offset compensation to the network device. The above-mentioned first uplink signal can be any uplink signal that the terminal device needs to send to the network device. The judgment result in this embodiment can be understood as an uplink judgment result.

[0119] In this embodiment, the terminal device can determine whether to perform uplink frequency deviation compensation on the first uplink signal based on the auxiliary information sent by the network device and the status information of the terminal device itself. That is, when the terminal device needs to send an uplink signal, it can determine in advance whether to perform frequency deviation compensation on the uplink signal based on the auxiliary information and its own status information. When the judgment result is that uplink frequency deviation pre-compensation is required, uplink frequency deviation pre-compensation is performed on the first uplink signal to suppress the occurrence of frequency deviation, thereby improving communication performance.

[0120] In one embodiment, the auxiliary information includes but is not limited to at least one of the following:

[0121] The moving speed threshold of the terminal device;

[0122] The effective time of the terminal device's moving speed;

[0123] Speed ​​difference threshold and uplink frequency deviation pre-compensation interruption duration.

[0124] In one embodiment, the state information includes the actual moving speed of the terminal device most recently acquired within the valid moving speed period;

[0125] If any of the following conditions is met, the uplink frequency offset pre-compensation is required:

[0126] The actual moving speed is greater than or equal to the moving speed threshold;

[0127] The actual moving speed is less than the moving speed threshold, and the difference between the absolute value of the actual moving speed and the moving speed threshold is less than or equal to the speed difference threshold, wherein the judgment result is that the first uplink signal needs to be pre-compensated for uplink frequency deviation within the uplink frequency deviation pre-compensation interruption duration.

[0128] In one embodiment, after determining whether to perform uplink frequency offset pre-compensation on the first uplink signal based on the auxiliary information and the state information of the terminal device, the method further includes:

[0129] When the judgment result is that uplink frequency offset pre-compensation is not required, a first uplink signal is sent to the network device, wherein the first uplink signal is not pre-compensated for uplink frequency offset.

[0130] In one embodiment, the state information includes the actual moving speed of the terminal device most recently acquired within the valid moving speed period;

[0131] If any of the following conditions is met, the uplink frequency offset pre-compensation is not required:

[0132] The actual movement speed is less than the movement speed threshold; or

[0133] The actual moving speed is less than the moving speed threshold, and the difference between the absolute value of the actual moving speed and the moving speed threshold is greater than the speed difference threshold, wherein the judgment result is that uplink frequency offset pre-compensation is not required within the uplink frequency offset pre-compensation interruption duration.

[0134] It can be understood that when the actual moving speed is less than the moving speed threshold, the terminal device may not perform uplink frequency offset compensation, and may not perform uplink frequency offset compensation on the first uplink signal, and may send the first uplink reference signal to the network device. Alternatively, when the actual moving speed is less than the moving speed threshold, the difference between the absolute value of the actual moving speed and the moving speed threshold is compared with the speed difference threshold. When the difference between the absolute value of the actual moving speed and the moving speed threshold is greater than the speed difference threshold, uplink frequency offset compensation may not be performed within the uplink frequency offset pre-compensation interruption duration, and uplink frequency offset compensation may not be performed on the first uplink signal within the uplink frequency offset pre-compensation interruption duration, and the first uplink signal without uplink frequency offset compensation is sent to the network device.

[0135] In one embodiment, the auxiliary information includes but is not limited to at least one of the following:

[0136] The maximum absolute value of the frequency deviation that the network equipment can handle;

[0137] Frequency deviation effective time of terminal equipment;

[0138] Frequency deviation value threshold and uplink frequency deviation pre-compensation interruption duration.

[0139] In one embodiment, the status information includes the second frequency offset value most recently determined within the frequency offset validity period of the terminal device;

[0140] If any of the following conditions is met, the uplink frequency offset pre-compensation is required:

[0141] The absolute value of the second frequency deviation value is greater than the maximum absolute value frequency deviation value;

[0142] The absolute value of the second frequency offset value is less than or equal to the maximum absolute value frequency offset value, and the difference between the absolute value of the second frequency offset value and the maximum absolute value frequency offset value is less than or equal to the frequency offset value threshold.

[0143] In one embodiment, the status information includes the second frequency offset value most recently determined within the frequency offset validity period of the terminal device;

[0144] If any of the following conditions is met, the uplink frequency offset pre-compensation is not required:

[0145] The absolute value of the second frequency deviation value is less than or equal to the maximum absolute frequency deviation value, and the difference between the absolute value of the second frequency deviation value and the maximum absolute frequency deviation value is greater than the frequency deviation value threshold, wherein the judgment result is that no uplink frequency deviation pre-compensation is required within the uplink frequency deviation pre-compensation interruption duration.

[0146] It can be understood that when the absolute value of the second frequency deviation value is less than or equal to the maximum absolute frequency deviation value, and the difference between the absolute value of the second frequency deviation value and the maximum absolute frequency deviation value is greater than the frequency deviation value threshold, it can be determined that no uplink frequency deviation pre-compensation is required within the uplink frequency deviation pre-compensation interruption duration, and uplink frequency deviation compensation may not be performed within the uplink frequency deviation pre-compensation interruption duration. Uplink frequency deviation compensation may not be performed on the first uplink signal within the uplink frequency deviation pre-compensation interruption duration, and the first uplink signal without uplink frequency deviation compensation may be sent to the network device.

[0147] See also Figure 4 , Figure 4 is a flow chart of a frequency offset compensation method provided in an embodiment of the present application, which is executed by a network device, such as Figure 4 As shown, the frequency offset compensation method provided in this embodiment includes the following steps:

[0148] Step 401: Send auxiliary information to the terminal device, where the auxiliary information is used by the terminal device to determine whether to perform uplink frequency offset pre-compensation on a first uplink signal, and if the determination result is that uplink frequency offset pre-compensation is required, perform uplink frequency offset pre-compensation on the first uplink signal.

[0149] In one embodiment, the auxiliary information includes but is not limited to at least one of the following:

[0150] The moving speed threshold of the terminal device;

[0151] The effective time of the terminal device's moving speed;

[0152] Speed ​​difference threshold and uplink frequency deviation pre-compensation interruption duration.

[0153] In one embodiment, the auxiliary information includes but is not limited to at least one of the following:

[0154] The maximum absolute value of the frequency deviation that the network equipment can handle;

[0155] Frequency deviation effective time of terminal equipment;

[0156] Frequency deviation value threshold and uplink frequency deviation pre-compensation interruption duration.

[0157] The process of the above method of the present application is specifically described below with some embodiments, taking the network device as a base station as an example.

[0158] First, the related technologies are explained. Frequency offset tracking, frequency offset estimation and frequency offset compensation can be divided into terrestrial networks and non-terrestrial networks (NTN):

[0159] Ground network:

[0160] Downlink: The terminal tracks the frequency deviation of the downlink signal according to reference signals such as SSB / tracking reference signal (TRS) / demodulation reference signal (DMRS) / phase tracking reference signal (PTRS), and demodulates after finding the downlink frequency point.

[0161] Uplink: The terminal determines the uplink transmission frequency based on the downlink reception frequency (uplink transmission frequency = downlink reception frequency). The base station tracks the frequency deviation of the uplink signal based on the reference signals such as DMRS sent by the terminal, and demodulates after finding the uplink frequency.

[0162] Non-terrestrial networks:

[0163] Downlink (DL): The terminal can estimate the Doppler frequency offset based on the ephemeris information broadcast by the base station and the position and velocity information obtained by its own Global Navigation Satellite System (GNSS). When receiving, the estimated value is used to compensate for the frequency offset and then demodulate in the baseband.

[0164] Uplink (UL): The terminal determines the uplink transmission frequency (uplink transmission frequency = downlink reception frequency) based on the downlink reception frequency. The terminal estimates the Doppler frequency deviation based on the ephemeris information broadcast by the base station and the position and speed information obtained by its own GNSS, and performs frequency deviation pre-compensation before sending the uplink signal. The base station tracks the frequency deviation of the uplink signal based on the reference signals such as DMRS sent by the terminal, and demodulates after finding the uplink frequency.

[0165] However, the frequency offset estimation and compensation scheme of the ground network cannot be applied to scenarios with high-speed mobile terminal equipment (UE), such as the air-to-ground (ATG) scenario. When the carrier center frequency is high (e.g. 4.9GHz) and the terminal equipment moves at a very high speed (e.g. 1200km / h), the terminal equipment will not be able to track the true Doppler frequency offset according to TRS during downlink transmission, and the downlink demodulation performance will deteriorate. At the same time, during uplink transmission, the base station cannot estimate and process the twice Doppler frequency offset according to DMRS, and the uplink demodulation performance will deteriorate. For example, according to theoretical calculations based on TRS / SSB, the maximum frequency shift that the UE can track is shown in Table 1 below:

[0166] Table 1

[0167]

[0168]

[0169] Considering that the base station position remains unchanged, when the UE's moving speed exceeds 945km / h, TRS cannot support the terminal to track Doppler frequency shift. In the ATG scenario, the maximum moving speed of the terminal is considered to be 1200km / h, and the Doppler caused by it will exceed 1.11ppm; when the terminal performs uplink transmission, the received signal at the base station will have twice the Doppler shift, which will exceed 2.22ppm; as shown in Table 2, the base station cannot perform uplink time-frequency tracking and subsequent demodulation based on the DMRS reference signal.

[0170] Table 2

[0171]

[0172] The frequency offset compensation solution of the NTN network requires the base station / satellite to broadcast its own location information and the terminal to have GNSS capability. It cannot be applied to scenarios where there is a lack of location information or speed information.

[0173] Based on this, an embodiment of the present application provides a frequency offset compensation method, which can solve:

[0174] a) Frequency deviation tracking and compensation issues for high-speed terminals

[0175] i. The relative speed between the terminal and the base station is too high, and there is no location / speed information, and:

[0176] 1. Due to the limited capabilities of the terminal / base station, it is impossible to track the frequency deviation based on the existing reference signal

[0177] 2. Or due to the limitation of system throughput requirements, it is impossible to configure too many dense reference symbols for time-frequency tracking

[0178] b) Solve the power consumption problem caused by the terminal's need to frequently execute GNSS.

[0179] In the embodiment of the present application, it should be noted that when the UE does not have the uplink pre-compensation capability, the uplink signal received by the base station will have a double Doppler shift. When the UE moves at high speed in an ATG scenario, for example, the base station cannot perform uplink time-frequency tracking and subsequent demodulation based on reference signals such as DMRS, or due to throughput limitations, the base station cannot configure too many time-frequency resources for the reference signal. (UE does not have the uplink pre-compensation capability, including: the base station cannot transmit its own position, the terminal does not have the GNSS positioning capability, and the terminal cannot accurately track the downlink frequency deviation, etc.).

[0180] In this scenario, the downlink frequency offset problem can be solved by sending downlink signals through the base station and pre-compensating the downlink signal in advance.

[0181] First, for the method of pre-compensation of downlink frequency offset on the base station side:

[0182] This solution is applicable to scenarios where the Doppler frequency deviation direction of users in a cell is consistent. The Doppler frequency deviation direction of users in a cell can be estimated by the measurement report value of the terminal, or determined by the source base station to which the terminal switches, or for RRC-IDLE / INACTIVE state UEs, determined by the following three items:

[0183] 1. The base station notifies the terminal whether the base station has performed frequency offset pre-compensation, and further notifies the terminal of the base station frequency offset pre-compensation value:

[0184] a) When the base station sends a system broadcast message such as SSB / System Information Block (SIB), frequency offset pre-compensation is performed. Further, the base station informs the terminal whether the SSB performs frequency offset pre-compensation and / or the value of frequency offset pre-compensation (used by the UE to calculate point A, etc.);

[0185] b) When the base station sends data, it performs frequency offset pre-compensation, and further notifies the terminal of the value of the frequency offset pre-compensation of the base station;

[0186] c) When the terminal performs handover, the source base station informs the terminal through signaling (such as RRCReconfiguration) whether the target cell performs frequency offset pre-compensation and / or the value of frequency offset pre-compensation.

[0187] 2. The terminal reports auxiliary information:

[0188] a) The terminal informs the base station whether it has GNSS+ velocity acquisition capability: this is used by the base station to determine whether the data channel needs to be pre-compensated for frequency offset before sending;

[0189] b) The terminal may report, through terminal assistance information (UE Assistance Information, UAI), that the terminal requires the base station to perform frequency offset pre-compensation, and / or report the value of the frequency offset pre-compensation required by the terminal to the base station;

[0190] c) The terminal informs the base station whether it has the frequency deviation tracking capability based on SSB+TRS.

[0191] 3. The base station decides whether and how to perform frequency offset pre-compensation for downlink transmission based on the terminal behavior and the terminal report content:

[0192] a) The base station can derive the SSB index selected by the terminal based on the PRACH resource selected by the terminal, derive the frequency offset direction of the terminal, and further infer whether frequency offset pre-compensation is required for downlink transmission;

[0193] b) The base station decides the frequency offset pre-compensation behavior based on the UAI reported by the terminal in the cell and the Doppler direction obtained according to the measurement results;

[0194] c) The base station decides the frequency offset pre-compensation behavior based on whether the terminal has GNSS+ velocity acquisition capability and whether the base station can send its location information;

[0195] i. Among a), b), and c), the base station decision criteria include but are not limited to:

[0196] 1. If the terminal has the capability to obtain position + velocity, and the base station can send position information, it means that the terminal can perform frequency offset pre-compensation based on position + velocity, then the base station will not perform frequency offset pre-compensation;

[0197] 2. If the terminal has the SSB+TRS frequency offset tracking capability, then the base station decides whether to perform frequency offset pre-compensation;

[0198] 3. If there is more than one terminal in the network and the frequency offset directions are opposite, then whether the base station performs frequency offset pre-compensation is determined by the scheduling algorithm. For example: if the time-frequency resources of the terminals with opposite frequency offset directions do not overlap, then the base station can perform frequency offset pre-compensation, otherwise it cannot.

[0199] Embodiment 1:

[0200] 1. When the base station sends SSB, it performs frequency offset pre-compensation, such as Figure 5 As shown:

[0201] 2. The base station sends ssb-freqpre-compensationInBurst IE Bitmap:0011Value:-5kHz,5kHz in Serving CellConfigCommon IE and Serving CellConfigCommonSIB IE;

[0202] In the bitmap, 0 means that the base station does not perform frequency offset precompensation, and 1 means that the base station performs frequency offset precompensation. The frequency offset precompensation values ​​are -5kHz and 5kHz respectively. Figure 5 As shown in the figure, 4 SSBs are listed. Among them, when the first two SSBs are sent, frequency offset compensation is not performed, and the frequency corresponds to f0, corresponding to the first two 0s in bit map 0011. For the third SSB, frequency offset compensation is performed, corresponding to the third bit 1 in bit map 0011, and the frequency corresponds to f0-foffset It can be understood that the frequency offset precompensation value is -f offset For the fourth SSB, frequency offset compensation is performed, corresponding to the fourth bit 1 in bitmap 0011, and the frequency corresponds to f0+f offset It can be understood that the frequency offset pre-compensation value is +f offset .

[0203] Among them, the absolute value of the frequency offset compensation value can be based on:

[0204] Determination of base station service scenario and frequency: For example, in the ATG scenario, you can use v = 1000km / h and the current frequency, such as 4.9GHz: frequency offset compensation value = 4.9G / c*v;

[0205] The direction of frequency offset compensation can be based on:

[0206] When the base station is uncertain about the moving direction of the terminal relative to the base station: the direction of frequency offset compensation is both positive and negative;

[0207] The base station determines the moving direction of the terminal relative to the base station. For example, if the flight path of an airplane is known in advance, the frequency offset compensation direction may be only positive or only negative, which is consistent with the flight path of the airplane.

[0208] 3. The terminal performs SSB measurement + demodulation before random access. The terminal selects SSB index 3, calculates the point A position using -5kHz, and selects the PRACH resource corresponding to SSB index 3 for uplink transmission.

[0209] 4. When the base station sends the base station location information such as SIB 19 to the terminal, the frequency offset pre-compensation value used by SSB index 3 is used for frequency offset pre-compensation before sending;

[0210] 5. Terminal A reports that it has GNSS+speed acquisition capability;

[0211] 6. Based on the decision criteria, the base station does not perform frequency offset pre-compensation in subsequent downlink transmissions;

[0212] or

[0213] 7. Terminal A reports that it does not have GNSS+speed capability;

[0214] 8. In subsequent downlink transmissions, the base station uses -5kHz corresponding to SSB index 3 for frequency offset pre-compensation and then transmits.

[0215] Embodiment 2:

[0216] 1. When the base station sends SSB, it performs frequency offset pre-compensation, such as Figure 6 As shown:

[0217] 2. The base station sends ssb-freqpre-compensationInBurst IE Bitmap:0011Value:-5kHz,5kHz in Serving CellConfigCommon IE and Serving CellConfigCommonSIB IE:

[0218] Among them, 0 means that the base station does not perform frequency offset pre-compensation, and 1 means that the base station performs frequency offset pre-compensation. The frequency offset pre-compensation values ​​are -5kHz, 5kHz respectively.

[0219] 3. Terminal A performs SSB measurement + demodulation before random access. The terminal selects SSB index 3, calculates the position of point A using -5kHz, and selects the PRACH resource corresponding to SSB index 3 for uplink transmission.

[0220] 4. Terminal B performs SSB measurement + demodulation before random access. The terminal selects SSB index 4, calculates the position of point A using -5kHz, and selects the PRACH resource corresponding to SSB index 4 for uplink transmission;

[0221] 5. Terminal A reports that it has GNSS capability, and terminal B reports that it does not have GNSS capability;

[0222] 6. When the base station sends the base station location information such as SIB 19 to terminal A, the frequency offset pre-compensation value used by SSB index 3 is used for frequency offset pre-compensation before sending;

[0223] 7. When the base station performs subsequent downlink transmission, terminals A and B perform time division scheduling. According to the decision criteria, the downlink signal to terminal A is not pre-compensated for frequency offset, and the downlink signal to terminal B is pre-compensated for frequency offset using the frequency offset pre-compensation value used by SSB index 4 before being sent;

[0224] or

[0225] 8. Terminal A reports that it has GNSS+speed capability, and terminal B reports that it has frequency deviation tracking+frequency deviation compensation capability based on SSB+TRS;

[0226] 9. When the base station sends the base station location information such as SIB 19 to terminal A, the frequency offset pre-compensation value used by SSB index 3 is used for frequency offset pre-compensation before sending;

[0227] 10. The base station decides according to the decision criterion: no frequency offset pre-compensation is performed in subsequent downlink transmission;

[0228] or

[0229] 13. Terminal A reports that it does not have GNSS+velocity acquisition capability, and terminal B reports that it has frequency deviation tracking+frequency deviation compensation capability based on SSB+TRS;

[0230] 14. The base station uses the value corresponding to SSB index 3 to perform frequency offset pre-compensation in subsequent downlink transmission.

[0231] Embodiment 3:

[0232] 1. The terminal monitors the estimated frequency offset value. When the estimated frequency offset value is expected to exceed its frequency offset processing capability, the terminal reports to the base station that the terminal base station needs to perform frequency offset pre-compensation (and the value of frequency offset pre-compensation);

[0233] 2. If the terminal does not report the value that requires the base station to pre-compensate the frequency offset, the base station estimates the terminal speed and Doppler frequency offset value based on the terminal measurement report result;

[0234] 3. Before downlink transmission, the base station performs frequency offset pre-compensation according to the frequency offset pre-compensation value reported by the terminal or the obtained Doppler frequency offset value, and then sends it.

[0235] Embodiment 4:

[0236] 1. When the terminal performs handover, the source base station informs the terminal through signaling (such as RRCReconfiguration) that the target cell has performed frequency offset pre-compensation, and the value of frequency offset pre-compensation is 1ppm;

[0237] 2. After the terminal accesses the target base station, the uplink frequency offset pre-compensation process using GNSS is canceled.

[0238] Secondly, for the method of pre-compensation of downlink frequency offset on the terminal equipment side, that is, the method of processing uplink frequency offset of the terminal based on auxiliary information of the base station:

[0239] That is, the terminal determines whether the uplink transmission needs to perform frequency pre-compensation based on the GNSS position information according to the auxiliary information sent by the base station and its own status information;

[0240] Scenario 1:

[0241] 1. The auxiliary information sent by the base station includes but is not limited to at least one of the following:

[0242] a) Reference value Vmax of one or more terminal moving speeds:

[0243] This value may be related to the uplink SCS, uplink and downlink frequencies, and sent to the terminal at the same time; generally speaking, the larger the uplink SCS, the larger the Vmax, and the higher the uplink frequency, the smaller the Vmax;

[0244] b) Terminal moving speed effective time T1;

[0245] c) One or more groups: The threshold value Voffset of the difference between the absolute value of the terminal velocity V and Vmax, and the uplink frequency pre-compensation interruption time T2:

[0246] Generally speaking, the larger Voffset is, the longer T2 is;

[0247] 2. The state information of the terminal itself includes but is not limited to one of the following:

[0248] a) During the T1 time, the most recently obtained terminal moving speed: V;

[0249] This speed can be obtained through GNSS or other speed acquisition modules;

[0250] 3. The criteria for the terminal to determine whether to perform frequency pre-compensation based on GNSS location information for uplink transmission can be one of the following:

[0251] a) When the terminal moving speed is less than the maximum terminal moving speed issued by the base station (V < Vmax), the terminal does not need to perform uplink frequency pre-compensation, and vice versa.

[0252] b) When the terminal moving speed is less than the maximum terminal moving speed issued by the base station (V < Vmax), and the difference between the absolute value of the terminal speed V and Vmax is greater than Voffset, then in the next T2 time, the terminal does not need to perform uplink frequency pre-compensation;

[0253] 4. For a terminal without GNSS capabilities, it can also constrain its moving speed according to the maximum terminal moving speed Vmax issued by the base station, for example, ensuring that the moving speed is less than Vmax.

[0254] Solution 2:

[0255] 1. The auxiliary information issued by the base station includes but is not limited to at least one of the following:

[0256] a) The absolute value of the maximum frequency offset fdmax that the base station can handle, and this value can be related to the uplink SCS;

[0257] b) The effective time T1 of the absolute value of the terminal Doppler frequency offset;

[0258] c) One or more groups: The threshold value fdoffset of the difference between the absolute value of the terminal Doppler frequency offset and the absolute value of the maximum frequency offset that the base station can handle, and the uplink frequency pre-compensation interruption time T2;

[0259] 2. The state information of the terminal itself includes but is not limited to one of the following:

[0260] a) During the T1 time, the most recently estimated Doppler frequency offset value: fd

[0261] 3. The criterion for the terminal to determine whether uplink transmission requires frequency pre - compensation based on GNSS location information can be as follows:

[0262] a) When within the T1 time of the terminal, the difference between the most recent estimated Doppler frequency offset value: fd and the absolute value of the maximum frequency offset that the base station can handle is greater than the threshold fdoffset, the terminal does not need to perform uplink frequency pre - compensation within the subsequent T2 time;

[0263] This solution can solve the power consumption problem caused by the terminal needing to frequently execute GNSS.

[0264] Example 5:

[0265] 1. The base station sends auxiliary information according to its own frequency offset estimation ability:

[0266] a) The maximum value of the terminal's moving speed, as shown in Table 3;

[0267] b) The effective time of the terminal speed T1 = 5s;

[0268] Table 3

[0269] Vmax=500km / h SCS=15kHz f=2GHz Vmax=1000km / h SCS=30kHz f=2GHz Vmax=500km / h SCS=30kHz f=4GHz

[0270] 2. The terminal, based on the uplink SCS, center frequency, and the terminal speed at this time, for example, SCS = 30kHz, f = 4GHz, V = 350km / h

[0271] 3. The terminal makes a pre - compensation judgment: According to the terminal's current status information, compare V with the corresponding Vmax, V = 350km / h < Vmax = 500km / h, and at this time the terminal can not perform uplink frequency pre - compensation.

[0272] Example 6:

[0273] 1. The base station sends auxiliary information according to its own frequency offset estimation ability: The absolute value of the maximum frequency offset that the base station can handle

[0274] a) fdmax = 3kHz * 2μ, where μ is the current uplink SCS

[0275] b) The effective time of the absolute value of the terminal Doppler frequency offset T1 = 5s

[0276] c) fdoffset = 500Hz * 2μ, the frequency pre - compensation interruption time T2 = 150s

[0277] 2. The terminal obtains the uplink SCS and the latest Doppler frequency offset estimate value fd within 5s: SCS = 15kHz, fd = 1kHz

[0278] 3. The terminal performs pre-compensation judgment: |fdmax|-|fd|>500Hz. The terminal does not need to perform uplink frequency pre-compensation based on GNSS etc. in the next 150s.

[0279] Method based on base station downlink frequency offset pre-compensation:

[0280] 1. The base station notifies the terminal whether the base station has performed frequency offset pre-compensation, and further notifies the terminal of the base station frequency offset pre-compensation value

[0281] a) When the base station sends a system broadcast message such as SSB / SIB, it performs frequency offset pre-compensation. The base station further informs the terminal whether to perform frequency offset pre-compensation on SSB and / or the value of frequency offset pre-compensation.

[0282] b) When the base station sends data, it performs frequency offset pre-compensation and further notifies the terminal of the value of the frequency offset pre-compensation of the base station

[0283] c) When the terminal is switched, the source base station informs the terminal through signaling (such as RRCReconfiguration) whether the target cell has performed frequency offset pre-compensation and / or the value of frequency offset pre-compensation.

[0284] 2. The terminal reports auxiliary information:

[0285] a) The terminal informs the base station whether it has GNSS+ velocity acquisition capability: This is used by the base station to determine whether the data channel needs to be pre-compensated for frequency offset before sending

[0286] b) The terminal can report, through UAI, etc., that the terminal needs the base station to perform frequency offset pre-compensation, and / or report that the terminal needs the base station to send a frequency offset pre-compensation value

[0287] c) The terminal informs the base station whether it has the frequency deviation tracking capability based on SSB+TRS.

[0288] Terminal uplink frequency deviation processing method based on base station auxiliary information:

[0289] 1. The base station sends one of the following auxiliary information:

[0290] a) Maximum value Vmax of one or more terminal moving speeds:

[0291] i. This value can be sent to the terminal simultaneously with the uplink SCS and uplink frequency;

[0292] ii. Terminal moving speed effective time T1;

[0293] iii. One or more groups: the threshold Voffset of the difference between the absolute value V of the terminal speed and Vmax and the uplink frequency pre-compensation interruption time T2;

[0294] b) The absolute value of the maximum frequency offset fdmax that the base station can handle:

[0295] i. The effective time T1 of the absolute value of the Doppler frequency offset of the terminal;

[0296] ii. One or more groups: The threshold fdoffset of the difference between the absolute value of the Doppler frequency offset of the terminal and the absolute value of the maximum frequency offset that the base station can handle, and the uplink frequency pre-compensation interruption time T2;

[0297] 2. The criterion for the terminal to determine whether uplink transmission needs to perform frequency pre-compensation based on GNSS location information can be:

[0298] a) When the terminal moving speed is less than the maximum terminal moving speed Vmax sent by the base station, V < Vmax, the terminal does not need to perform uplink frequency pre-compensation, and vice versa;

[0299] b) When the terminal moving speed is less than the maximum terminal moving speed (V < Vmax) sent by the base station, and the difference between the absolute value of the terminal speed V and Vmax is greater than Voffset, then within the next T2 time, the terminal does not need to perform uplink frequency pre-compensation;

[0300] c) When within the T1 time of the terminal, the difference between the most recently estimated Doppler frequency offset value: fd and the absolute value of the maximum frequency offset that the base station can handle is greater than the threshold fdoffset, the terminal does not need to perform uplink frequency pre-compensation within the subsequent T2 time;

[0301] In summary, the solution of the embodiment of this application:

[0302] For the uplink frequency offset processing method of the terminal based on base station auxiliary information and the frequency offset estimation and compensation scheme of the terrestrial network, by using the UE GNSS capability, the frequency offset estimation / compensation problem of high-speed moving terminals can be solved; for the frequency offset estimation and compensation scheme of the NTN network, by using the base station to inform the terminal of its frequency offset estimation / compensation capability, while not affecting the uplink transmission performance, the frequency of the terminal performing GNSS measurements is reduced, helping the terminal to save energy.

[0303] For the method of base station downlink frequency pre-compensation, for the frequency offset estimation and compensation scheme of the terrestrial network, by the base station performing frequency pre-compensation in advance, the frequency offset estimation / compensation pressure of the terminal is reduced, so that low-capability terminals can also access the network; for the frequency offset estimation and compensation scheme of the NTN network, a method is provided, even if the terminal does not have GNSS capability, it can still access the network for data transmission.

[0304] The solution of the embodiment of this application is based on the ATG network deployment and terminal characteristics / behavior. The future ATG commercial prospect is broad, and it is also applicable to other private networks serving high-speed terminals.

[0305] like Figure 7 As shown, Figure 7 is a structural diagram of a frequency offset compensation device 700 provided in an embodiment of the present application, such as Figure 7 As shown, the device 700 can be applied to a network device, and the device 700 includes:

[0306] The first receiving module 701 is used to receive first information sent by a terminal device, where the first information is used to indicate at least one of the following: a location positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for frequency deviation compensation by a network device;

[0307] A first determination module 702, configured to determine whether to perform downlink frequency offset compensation on the first downlink signal based on the first information;

[0308] The first compensation module 703 is configured to perform downlink frequency offset compensation on the first downlink signal when the judgment result is that downlink frequency offset compensation is required.

[0309] In one embodiment, when the first information satisfies the first condition, the judgment result is that downlink frequency offset compensation needs to be performed;

[0310] The first condition includes at least one of the following:

[0311] The terminal device does not have the ability to locate the location;

[0312] The terminal device does not have the ability to obtain speed;

[0313] The terminal equipment does not have enhanced frequency deviation tracking capability;

[0314] The first information indicates that the network device needs to perform frequency offset compensation.

[0315] In one embodiment, the first compensation module 703 is specifically configured to:

[0316] Based on the frequency offset value corresponding to the first message block, the first downlink signal is frequency offset compensated, and a second downlink signal after the frequency offset compensation is performed on the first downlink signal is sent to the terminal device;

[0317] Among them, the physical random access channel PRACH resource corresponding to the first message block is the PRACH resource for uplink transmission from the terminal device to the network device.

[0318] In one embodiment, the frequency offset compensation device 700 further includes:

[0319] The third sending module is used to send a first downlink signal to the terminal device when the judgment result is that no downlink frequency offset compensation is required, wherein the first downlink signal does not perform downlink frequency offset compensation.

[0320] In one embodiment, when the first information satisfies the second condition, the judgment result is that downlink frequency offset compensation is not required;

[0321] The second condition includes at least one of the following:

[0322] The terminal device has the ability to locate the position and obtain the speed;

[0323] The terminal equipment has enhanced frequency deviation tracking capability.

[0324] In one embodiment, the first compensation module 703 includes:

[0325] A first compensation unit, configured to, when the first information indicates that the network device needs to perform frequency offset compensation and the first information indicates a frequency offset compensation value, perform frequency offset compensation on the first downlink signal according to the frequency offset compensation value indicated by the first information, and send a third downlink signal after frequency offset compensation to the terminal device;

[0326] The second compensation unit is configured to, when the first information indicates that the network device needs to perform frequency offset compensation and does not indicate a frequency offset compensation value, perform frequency offset compensation on the first downlink signal according to a measurement result, and send a fourth downlink signal after frequency offset compensation to the terminal device, wherein the measurement result includes at least one of the following:

[0327] A quality measurement value obtained by the terminal device measuring the downlink reference signal;

[0328] A quality measurement value obtained by measuring an uplink reference signal by a network device;

[0329] The frequency deviation value obtained by the network device through channel estimation of the uplink channel.

[0330] In one embodiment, the second compensation unit comprises:

[0331] A speed determination unit, used to determine the moving speed of the terminal device according to the measurement result;

[0332] A first determining unit, configured to determine a first frequency offset compensation value based on a moving speed;

[0333] The first frequency offset compensation subunit is configured to perform frequency offset compensation on the first downlink signal based on a first frequency offset compensation value.

[0334] The device 700 provided in this embodiment can implement each process of each embodiment of the above-mentioned frequency offset compensation method applied to the network device. The technical features correspond one to one and can achieve the same technical effect. To avoid repetition, they will not be described here.

[0335] See also Figure 8 , Figure 8is a structural schematic diagram of a frequency offset compensation device provided in an embodiment of the present application, such as Figure 8 As shown, it can be applied to a terminal device, and the device 800 includes:

[0336] The first sending module 801 is used to send first information to the network device, wherein the first information is used to indicate at least one of the following: the location positioning capability of the terminal device, the speed acquisition capability of the terminal device, the frequency deviation tracking capability of the terminal device, and the need for the network device to perform frequency deviation compensation;

[0337] The second receiving module 802 is used to receive a downlink signal sent by the network device after performing downlink frequency offset compensation based on the first information.

[0338] In one embodiment, receiving a downlink signal sent by a network device after performing downlink frequency offset compensation based on first information includes:

[0339] A downlink signal sent by a receiving network device after performing downlink frequency offset compensation on the first downlink signal when the first information satisfies the first condition;

[0340] The first condition includes at least one of the following:

[0341] The terminal device does not have the ability to locate the location;

[0342] The terminal device does not have the ability to obtain speed;

[0343] The terminal equipment does not have enhanced frequency deviation tracking capability;

[0344] The first information indicates that the network device needs to perform frequency offset compensation.

[0345] In one embodiment, receiving a downlink signal sent by a network device after performing downlink frequency offset compensation on a first downlink signal when the first information satisfies a first condition includes:

[0346] The receiving network device sends a second downlink signal after performing downlink frequency offset compensation on the first downlink signal based on the frequency offset value corresponding to the first message block when the first information satisfies the first condition;

[0347] Among them, the physical random access channel PRACH resource corresponding to the first message block is the PRACH resource for uplink transmission from the terminal device to the network device.

[0348] In one embodiment, the first information indicates that the network device needs to perform frequency offset compensation;

[0349] Receiving a downlink signal sent by a network device after performing downlink frequency offset compensation based on first information, including:

[0350] A third downlink signal is sent by receiving a network device after performing downlink frequency offset compensation on the first downlink signal based on the frequency offset compensation value indicated by the first information; or

[0351] A fourth downlink signal is sent by the receiving network device after performing downlink frequency offset compensation on the first downlink signal based on the measurement result, wherein the measurement result includes at least one of the following:

[0352] A quality measurement value obtained by the terminal device measuring the downlink reference signal;

[0353] A quality measurement value obtained by measuring an uplink reference signal by a network device;

[0354] The frequency deviation value obtained by the network device through channel estimation of the uplink channel.

[0355] The device 800 provided in this embodiment is capable of implementing each process of each embodiment of the above-mentioned frequency offset compensation method applied to the terminal equipment. The technical features correspond one to one and can achieve the same technical effect. To avoid repetition, they will not be described here.

[0356] See also Fig. 9 , Fig. 9 is a structural diagram of a frequency offset compensation device 900 provided in an embodiment of the present application, such as Fig. 9 As shown, it can be applied to a terminal device, and the device 900 includes:

[0357] The third receiving module 901 is used to receive auxiliary information sent by the network device;

[0358] A second determination module 902 is used to determine whether to perform uplink frequency offset pre-compensation on the first uplink signal based on the auxiliary information and the state information of the terminal device;

[0359] The second compensation module 903 is configured to perform uplink frequency offset pre-compensation on the first uplink signal when the judgment result is that uplink frequency offset pre-compensation is required.

[0360] In one embodiment, the auxiliary information includes at least one of the following:

[0361] The moving speed threshold of the terminal device;

[0362] The effective time of the terminal device's moving speed;

[0363] Speed ​​difference threshold and uplink frequency deviation pre-compensation interruption duration.

[0364] In one embodiment, the state information includes the actual moving speed of the terminal device most recently acquired within the valid moving speed period;

[0365] If any of the following conditions is met, the uplink frequency offset pre-compensation is required:

[0366] The actual moving speed is greater than or equal to the moving speed threshold;

[0367] The actual moving speed is less than the moving speed threshold, and the difference between the absolute value of the actual moving speed and the moving speed threshold is less than or equal to the speed difference threshold, wherein the judgment result is that the first uplink signal needs to be pre-compensated for uplink frequency deviation within the uplink frequency deviation pre-compensation interruption duration.

[0368] In one embodiment, the frequency offset compensation device 900 further includes:

[0369] The uplink signal sending module is used to send a first uplink signal to the network device when the judgment result is that uplink frequency offset pre-compensation is not required, wherein the first uplink signal does not undergo uplink frequency offset pre-compensation.

[0370] In one embodiment, the state information includes the actual moving speed of the terminal device most recently acquired within the valid moving speed period;

[0371] If any of the following conditions is met, the uplink frequency offset pre-compensation is not required:

[0372] The actual movement speed is less than the movement speed threshold; or

[0373] The actual moving speed is less than the moving speed threshold, and the difference between the absolute value of the actual moving speed and the moving speed threshold is greater than the speed difference threshold, wherein the judgment result is that uplink frequency offset pre-compensation is not required within the uplink frequency offset pre-compensation interruption duration.

[0374] In one embodiment, the auxiliary information includes at least one of the following:

[0375] The maximum absolute value of the frequency deviation that the network equipment can handle;

[0376] Frequency deviation effective time of terminal equipment;

[0377] Frequency deviation value threshold and uplink frequency deviation pre-compensation interruption duration.

[0378] In one embodiment, the status information includes the second frequency offset value most recently determined within the frequency offset validity period of the terminal device;

[0379] If any of the following conditions is met, the uplink frequency offset pre-compensation is required:

[0380] The absolute value of the second frequency deviation value is greater than the maximum absolute value frequency deviation value;

[0381] The absolute value of the second frequency offset value is less than or equal to the maximum absolute value frequency offset value, and the difference between the absolute value of the second frequency offset value and the maximum absolute value frequency offset value is less than or equal to the frequency offset value threshold.

[0382] In one embodiment, the status information includes the second frequency offset value most recently determined within the frequency offset validity period of the terminal device;

[0383] If any of the following conditions is met, the uplink frequency offset pre-compensation is not required:

[0384] The absolute value of the second frequency deviation value is less than or equal to the maximum absolute frequency deviation value, and the difference between the absolute value of the second frequency deviation value and the maximum absolute frequency deviation value is greater than the frequency deviation value threshold, wherein the judgment result is that no uplink frequency deviation pre-compensation is required within the uplink frequency deviation pre-compensation interruption duration.

[0385] The device 900 provided in this embodiment is capable of implementing each process of each embodiment of the above-mentioned frequency offset compensation method applied to the terminal equipment. The technical features correspond one to one and can achieve the same technical effect. To avoid repetition, they will not be described here.

[0386] like Fig.10 As shown, Fig.10 is a structural schematic diagram of a frequency offset compensation device provided in an embodiment of the present application, such as Fig.10 As shown, the device 1000 can be applied to a network device, and the device 1000 includes:

[0387] The second sending module 1001 is used to send auxiliary information to the terminal device, the auxiliary information is used by the terminal device to determine whether to pre-compensate the first uplink signal for uplink frequency offset, and if the judgment result is that uplink frequency offset pre-compensation is required, pre-compensate the first uplink signal for uplink frequency offset.

[0388] In one embodiment, the auxiliary information includes at least one of the following:

[0389] The moving speed threshold of the terminal device;

[0390] The effective time of the terminal device's moving speed;

[0391] Speed ​​difference threshold and uplink frequency deviation pre-compensation interruption duration.

[0392] In one embodiment, the auxiliary information includes at least one of the following:

[0393] The maximum absolute value of the frequency deviation that the network equipment can handle;

[0394] Frequency deviation effective time of terminal equipment;

[0395] Frequency deviation value threshold and uplink frequency deviation pre-compensation interruption duration.

[0396] The device 1000 provided in this embodiment can implement each process of each embodiment of the above-mentioned frequency offset compensation method applied to the network device. The technical features correspond one to one and can achieve the same technical effect. To avoid repetition, they will not be described here.

[0397] An embodiment of the present application also provides a communication device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, each process of the above-mentioned frequency offset compensation method embodiment applied to the network device is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0398] For details, see Fig.11 The embodiment of the present application further provides a communication device, including a bus 1101, a transceiver 1102, an antenna 1103, a bus interface 1104, a processor 1105 and a memory 1106.

[0399] The processor 1105 is used for:

[0400] Receiving, by the transceiver 1102, first information sent by the terminal device, the first information being used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for frequency deviation compensation by a network device;

[0401] Based on the first information, determining whether to perform downlink frequency offset compensation on the first downlink signal;

[0402] When the judgment result is that downlink frequency offset compensation is required, downlink frequency offset compensation is performed on the first downlink signal.

[0403] In one embodiment, when the first information satisfies the first condition, the judgment result is that downlink frequency offset compensation needs to be performed;

[0404] The first condition includes at least one of the following:

[0405] The terminal device does not have the ability to locate the location;

[0406] The terminal device does not have the ability to obtain speed;

[0407] The terminal equipment does not have enhanced frequency deviation tracking capability;

[0408] The first information indicates that the network device needs to perform frequency offset compensation.

[0409] In one embodiment, the processor 1105 is specifically configured to:

[0410] Based on the frequency offset value corresponding to the first message block, the first downlink signal is frequency offset compensated, and a second downlink signal after the frequency offset compensation is performed on the first downlink signal is sent to the terminal device;

[0411] Among them, the physical random access channel PRACH resource corresponding to the first message block is the PRACH resource for uplink transmission from the terminal device to the network device.

[0412] In one embodiment, the processor 1105 is further configured to:

[0413] When the judgment result is that downlink frequency offset compensation is not required, a first downlink signal is sent to the terminal device via the transceiver 1102, wherein the first downlink signal is not subjected to downlink frequency offset compensation.

[0414] In one embodiment, when the first information satisfies the second condition, the judgment result is that downlink frequency offset compensation is not required;

[0415] The second condition includes at least one of the following:

[0416] The terminal device has the ability to locate the position and obtain the speed;

[0417] The terminal equipment has enhanced frequency deviation tracking capability.

[0418] In one embodiment, the processor 1105 is specifically configured to:

[0419] When the first information indicates that the network device needs to perform frequency offset compensation and the first information indicates a frequency offset compensation value, frequency offset compensation is performed on the first downlink signal according to the frequency offset compensation value indicated by the first information, and a third downlink signal after frequency offset compensation is sent to the terminal device;

[0420] When the first information indicates that the network device needs to perform frequency offset compensation and does not indicate a frequency offset compensation value, frequency offset compensation is performed on the first downlink signal according to the measurement result, and a fourth downlink signal after the frequency offset compensation is sent to the terminal device, and the measurement result includes at least one of the following:

[0421] A quality measurement value obtained by the terminal device measuring the downlink reference signal;

[0422] A quality measurement value obtained by measuring an uplink reference signal by a network device;

[0423] The frequency deviation value obtained by the network device through channel estimation of the uplink channel.

[0424] In one embodiment, the processor 1105 is specifically configured to:

[0425] determining the moving speed of the terminal device according to the measurement result;

[0426] Determining a first frequency offset compensation value based on the moving speed;

[0427] Frequency offset compensation is performed on the first downlink signal based on the first frequency offset compensation value.

[0428] or,

[0429] The processor 1105 is configured to:

[0430] Auxiliary information is sent to the terminal device via the transceiver 1102, and the auxiliary information is used by the terminal device to determine whether to pre-compensate the first uplink signal for uplink frequency offset, and if the determination result is that uplink frequency offset pre-compensation is required, pre-compensate the first uplink signal for uplink frequency offset.

[0431] In one embodiment, the auxiliary information includes at least one of the following:

[0432] The moving speed threshold of the terminal device;

[0433] The effective time of the terminal device's moving speed;

[0434] Speed ​​difference threshold and uplink frequency deviation pre-compensation interruption duration.

[0435] In one embodiment, the auxiliary information includes at least one of the following:

[0436] The maximum absolute value of the frequency deviation that the network equipment can handle;

[0437] Frequency deviation effective time of terminal equipment;

[0438] Frequency deviation value threshold and uplink frequency deviation pre-compensation interruption duration.

[0439] exist Fig.11 In the embodiment, the bus architecture (represented by bus 1101) may include any number of interconnected buses and bridges, and bus 1101 links various circuits including one or more processors represented by processor 1105 and memory represented by memory 1106. Bus 1101 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 1104 provides an interface between bus 1101 and transceiver 1102. Transceiver 1102 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 1105 is transmitted on a wireless medium via antenna 1103, and further, antenna 1103 also receives data and transmits the data to processor 1105.

[0440] The processor 1105 is responsible for managing the bus 1101 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 1106 can be used to store data used by the processor 1105 when performing operations.

[0441] Optionally, the processor 1105 may be a CPU, an ASIC, an FPGA or a CPLD.

[0442] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the frequency offset compensation method embodiment applied to the network device is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the computer-readable storage medium, such as a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0443] An embodiment of the present application also provides a communication device, including: a processor, a memory, and a program stored in the memory and executable on the processor. When the program is executed by the processor, each process of the above-mentioned frequency offset compensation method embodiment applied to the terminal device is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0444] For details, see Fig.12 As shown, an embodiment of the present application also provides a communication device, including a bus 1201, a transceiver 1202, an antenna 1203, a bus interface 1204, a processor 1205 and a memory 1206.

[0445] The processor 1205 is used for:

[0446] Sending first information to the network device through the transceiver 1202, wherein the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation;

[0447] A downlink signal sent by the network device after performing downlink frequency offset compensation based on the first information is received through the transceiver 1202.

[0448] In one embodiment, receiving a downlink signal sent by a network device after performing downlink frequency offset compensation based on first information includes:

[0449] A downlink signal sent by a receiving network device after performing downlink frequency offset compensation on the first downlink signal when the first information satisfies the first condition;

[0450] The first condition includes at least one of the following:

[0451] The terminal device does not have the ability to locate the location;

[0452] The terminal device does not have the ability to obtain speed;

[0453] The terminal equipment does not have enhanced frequency deviation tracking capability;

[0454] The first information indicates that the network device needs to perform frequency offset compensation.

[0455] In one embodiment, receiving a downlink signal sent by a network device after performing downlink frequency offset compensation on a first downlink signal when the first information satisfies a first condition includes:

[0456] The receiving network device sends a second downlink signal after performing downlink frequency offset compensation on the first downlink signal based on the frequency offset value corresponding to the first message block when the first information satisfies the first condition;

[0457] Among them, the physical random access channel PRACH resource corresponding to the first message block is the PRACH resource for uplink transmission from the terminal device to the network device.

[0458] In one embodiment, the first information indicates that the network device needs to perform frequency offset compensation;

[0459] Receiving a downlink signal sent by a network device after performing downlink frequency offset compensation based on first information, including:

[0460] A third downlink signal is sent by receiving a network device after performing downlink frequency offset compensation on the first downlink signal based on the frequency offset compensation value indicated by the first information; or

[0461] A fourth downlink signal is sent by the receiving network device after performing downlink frequency offset compensation on the first downlink signal based on the measurement result, wherein the measurement result includes at least one of the following:

[0462] A quality measurement value obtained by the terminal device measuring the downlink reference signal;

[0463] A quality measurement value obtained by measuring an uplink reference signal by a network device;

[0464] The frequency deviation value obtained by the network device through channel estimation of the uplink channel.

[0465] or,

[0466] The processor 1205 is configured to:

[0467] Receiving auxiliary information sent by the network device through the transceiver 1202;

[0468] Based on the auxiliary information and the status information of the terminal device, determining whether to perform uplink frequency offset pre-compensation on the first uplink signal;

[0469] When the judgment result is that uplink frequency offset pre-compensation is required, uplink frequency offset pre-compensation is performed on the first uplink signal.

[0470] In one embodiment, the auxiliary information includes at least one of the following:

[0471] The moving speed threshold of the terminal device;

[0472] The effective time of the terminal device's moving speed;

[0473] Speed ​​difference threshold and uplink frequency deviation pre-compensation interruption duration.

[0474] In one embodiment, the state information includes the actual moving speed of the terminal device most recently acquired within the valid moving speed period;

[0475] If any of the following conditions is met, the uplink frequency offset pre-compensation is required:

[0476] The actual moving speed is greater than or equal to the moving speed threshold;

[0477] The actual moving speed is less than the moving speed threshold, and the difference between the absolute value of the actual moving speed and the moving speed threshold is less than or equal to the speed difference threshold, wherein the judgment result is that the first uplink signal needs to be pre-compensated for uplink frequency deviation within the uplink frequency deviation pre-compensation interruption duration.

[0478] In one embodiment, the processor 1205 is further configured to:

[0479] When the judgment result is that uplink frequency offset pre-compensation is not required, a first uplink signal is sent to the network device via the transceiver 1202, wherein the first uplink signal is not pre-compensated for uplink frequency offset.

[0480] In one embodiment, the state information includes the actual moving speed of the terminal device most recently acquired within the valid moving speed period;

[0481] If any of the following conditions is met, the uplink frequency offset pre-compensation is not required:

[0482] The actual movement speed is less than the movement speed threshold; or

[0483] The actual moving speed is less than the moving speed threshold, and the difference between the absolute value of the actual moving speed and the moving speed threshold is greater than the speed difference threshold, wherein the judgment result is that uplink frequency offset pre-compensation is not required within the uplink frequency offset pre-compensation interruption duration.

[0484] In one embodiment, the auxiliary information includes at least one of the following:

[0485] The maximum absolute value of the frequency deviation that the network equipment can handle;

[0486] Frequency deviation effective time of terminal equipment;

[0487] Frequency deviation value threshold and uplink frequency deviation pre-compensation interruption duration.

[0488] In one embodiment, the status information includes the second frequency offset value most recently determined within the frequency offset validity period of the terminal device;

[0489] If any of the following conditions is met, the uplink frequency offset pre-compensation is required:

[0490] The absolute value of the second frequency deviation value is greater than the maximum absolute value frequency deviation value;

[0491] The absolute value of the second frequency offset value is less than or equal to the maximum absolute value frequency offset value, and the difference between the absolute value of the second frequency offset value and the maximum absolute value frequency offset value is less than or equal to the frequency offset value threshold.

[0492] In one embodiment, the status information includes the second frequency offset value most recently determined within the frequency offset validity period of the terminal device;

[0493] If any of the following conditions is met, the uplink frequency offset pre-compensation is not required:

[0494] The absolute value of the second frequency deviation value is less than or equal to the maximum absolute frequency deviation value, and the difference between the absolute value of the second frequency deviation value and the maximum absolute frequency deviation value is greater than the frequency deviation value threshold, wherein the judgment result is that no uplink frequency deviation pre-compensation is required within the uplink frequency deviation pre-compensation interruption duration.

[0495] exist Fig.12 In the embodiment, the bus architecture (represented by bus 1201) may include any number of interconnected buses and bridges, and bus 1201 links various circuits including one or more processors represented by processor 1205 and memory represented by memory 1206. Bus 1201 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 1204 provides an interface between bus 1201 and transceiver 1202. Transceiver 1202 may be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. Data processed by processor 1205 is transmitted on a wireless medium via antenna 1203, and further, antenna 1203 also receives data and transmits the data to processor 1205.

[0496] The processor 1205 is responsible for managing the bus 1201 and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management and other control functions. The memory 1206 can be used to store data used by the processor 1205 when performing operations.

[0497] Optionally, the processor 1205 may be a CPU, an ASIC, an FPGA or a CPLD.

[0498] The embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, each process of the frequency offset compensation method embodiment applied to the terminal device is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. Among them, the computer-readable storage medium, such as ROM, RAM, disk or optical disk, etc.

[0499] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0500] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of each embodiment of the present application.

[0501] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A frequency offset compensation method, characterized in that: Applied to a network device, the method comprises: Receive first information sent by a terminal device, where the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation; Based on the first information, determining whether to perform downlink frequency offset compensation on the first downlink signal; When the judgment result is that downlink frequency offset compensation is required, downlink frequency offset compensation is performed on the first downlink signal.

2. The method according to claim 1, characterized in that When the first information satisfies the first condition, the judgment result is that downlink frequency offset compensation needs to be performed; The first condition includes at least one of the following: The terminal device does not have the capability of positioning; The terminal device does not have the capability to obtain speed; The terminal device does not have an enhanced frequency deviation tracking capability; The first information indicates that the network device needs to perform frequency offset compensation.

3. The method according to claim 2, characterized in that When the judgment result is that downlink frequency offset compensation is required, performing downlink frequency offset compensation on the first downlink signal includes: Based on the frequency offset value corresponding to the first message block, the first downlink signal is frequency offset compensated, and a second downlink signal after the frequency offset compensation is performed on the first downlink signal is sent to the terminal device; Among them, the physical random access channel PRACH resource corresponding to the first message block is the PRACH resource used by the terminal device to perform uplink transmission to the network device.

4. The method according to claim 1, characterized in that: After determining whether to perform downlink frequency offset compensation on the first downlink signal based on the first information, the method further includes: When the judgment result is that downlink frequency offset compensation is not required, the first downlink signal is sent to the terminal device, wherein the first downlink signal does not undergo downlink frequency offset compensation.

5. The method according to claim 4, characterized in that When the first information satisfies the second condition, the judgment result is that downlink frequency offset compensation is not required; The second condition includes at least one of the following: The terminal device has a position positioning capability, and the terminal device has a speed acquisition capability; The terminal device has an enhanced frequency deviation tracking capability.

6. The method according to claim 2, characterized in that When the judgment result is that downlink frequency offset compensation is required, performing downlink frequency offset compensation on the first downlink signal includes: When the first information indicates that the network device needs to perform frequency offset compensation and the first information indicates a frequency offset compensation value, frequency offset compensation is performed on the first downlink signal according to the frequency offset compensation value indicated by the first information, and a third downlink signal after frequency offset compensation is sent to the terminal device; When the first information indicates that the network device needs to perform frequency offset compensation and does not indicate a frequency offset compensation value, frequency offset compensation is performed on the first downlink signal according to a measurement result, and a fourth downlink signal after frequency offset compensation is sent to the terminal device, wherein the measurement result includes at least one of the following: A quality measurement value obtained by the terminal device measuring a downlink reference signal; The network device measures the uplink reference signal and obtains a quality measurement value; The network device performs channel estimation on the uplink channel to obtain a frequency deviation value.

7. The method according to claim 6, characterized in that The performing frequency offset compensation on the first downlink signal according to the measurement result includes: Determine the moving speed of the terminal device according to the measurement result; determining a first frequency offset compensation value based on the moving speed; Frequency offset compensation is performed on the first downlink signal based on the first frequency offset compensation value.

8. A frequency offset compensation method, characterized in that: Applied to a terminal device, the method comprises: Sending first information to the network device, wherein the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation; Receive a downlink signal sent by the network device after performing downlink frequency offset compensation based on the first information.

9. The method according to claim 8, characterized in that The receiving a downlink signal sent by the network device after performing downlink frequency offset compensation based on the first information includes: receiving a downlink signal sent by the network device after performing downlink frequency offset compensation on the first downlink signal when the first information satisfies a first condition; The first condition includes at least one of the following: The terminal device does not have the capability of positioning; The terminal device does not have the capability to obtain speed; The terminal device does not have an enhanced frequency deviation tracking capability; The first information indicates that the network device needs to perform frequency offset compensation.

10. The method according to claim 9, characterized in that The receiving a downlink signal sent by the network device after performing downlink frequency offset compensation on the first downlink signal when the first information satisfies a first condition, includes: receiving a second downlink signal sent by the network device after performing downlink frequency offset compensation on the first downlink signal based on the frequency offset value corresponding to the first message block when the first information satisfies a first condition; Among them, the physical random access channel PRACH resource corresponding to the first message block is the PRACH resource used by the terminal device to perform uplink transmission to the network device.

11. The method according to claim 8, characterized in that The first information indicates that the network device needs to perform frequency offset compensation; The receiving a downlink signal sent by the network device after performing downlink frequency offset compensation based on the first information includes: receiving a third downlink signal sent by the network device after performing downlink frequency offset compensation on the first downlink signal based on the frequency offset compensation value indicated by the first information; or receiving a fourth downlink signal sent by the network device after performing downlink frequency offset compensation on the first downlink signal based on the measurement result, wherein the measurement result includes at least one of the following: A quality measurement value obtained by the terminal device measuring a downlink reference signal; The network device measures the uplink reference signal and obtains a quality measurement value; The network device performs channel estimation on the uplink channel to obtain a frequency deviation value.

12. A frequency offset compensation method, characterized in that: Applied to a terminal device, the method comprises: Receiving auxiliary information sent by network equipment; Based on the auxiliary information and the status information of the terminal device, determining whether to perform uplink frequency offset pre-compensation on the first uplink signal; When the judgment result is that uplink frequency offset pre-compensation is required, uplink frequency offset pre-compensation is performed on the first uplink signal.

13. The method according to claim 12, characterized in that The auxiliary information includes at least one of the following: A moving speed threshold of the terminal device; The effective time of the moving speed of the terminal device; Speed ​​difference threshold and uplink frequency deviation pre-compensation interruption duration.

14. The method according to claim 13, characterized in that The state information includes the actual moving speed of the terminal device most recently acquired within the valid time of the moving speed; Wherein, if any of the following items is met, the judgment result is that uplink frequency offset pre-compensation is required: The actual moving speed is greater than or equal to the moving speed threshold; The actual moving speed is less than the moving speed threshold, and the difference between the absolute value of the actual moving speed and the moving speed threshold is less than or equal to the speed difference threshold, wherein the judgment result is that the first uplink signal needs to be pre-compensated for uplink frequency deviation within the uplink frequency deviation pre-compensation interruption duration.

15. The method according to claim 13, characterized in that The state information includes the actual moving speed of the terminal device most recently acquired within the valid time of the moving speed; If any of the following conditions is met, the judgment result is that uplink frequency offset pre-compensation is not required: The actual moving speed is less than the moving speed threshold; or The actual moving speed is less than the moving speed threshold, and the difference between the absolute value of the actual moving speed and the moving speed threshold is greater than the speed difference threshold, wherein the judgment result is that uplink frequency offset pre-compensation is not required within the uplink frequency offset pre-compensation interruption duration.

16. The method according to claim 12 or 15, characterized in that After determining whether to perform uplink frequency offset pre-compensation on the first uplink signal based on the auxiliary information and the status information of the terminal device, the method further includes: When the judgment result is that uplink frequency offset pre-compensation is not required, the first uplink signal is sent to the network device, wherein the first uplink signal is not pre-compensated for uplink frequency offset.

17. The method according to claim 12, characterized in that The auxiliary information includes at least one of the following: The maximum absolute value frequency deviation that can be processed by the network device; The frequency deviation effective time of the terminal device; Frequency deviation value threshold and uplink frequency deviation pre-compensation interruption duration.

18. The method according to claim 17, characterized in that The state information includes the second frequency deviation value most recently determined within the frequency deviation validity period of the terminal device; Wherein, if any of the following items is met, the judgment result is that uplink frequency offset pre-compensation is required: The absolute value of the second frequency offset value is greater than the maximum absolute value frequency offset value; The absolute value of the second frequency offset value is less than or equal to the maximum absolute value frequency offset value, and the difference between the absolute value of the second frequency offset value and the maximum absolute value frequency offset value is less than or equal to the frequency offset value threshold.

19. The method according to claim 17, characterized in that The state information includes the second frequency deviation value most recently determined within the frequency deviation validity period of the terminal device; If any of the following conditions is met, the judgment result is that uplink frequency offset pre-compensation is not required: The absolute value of the second frequency deviation value is less than or equal to the maximum absolute frequency deviation value, and the difference between the absolute value of the second frequency deviation value and the maximum absolute frequency deviation value is greater than the frequency deviation value threshold, wherein the judgment result is that no uplink frequency deviation pre-compensation is required within the uplink frequency deviation pre-compensation interruption duration.

20. A frequency offset compensation method, characterized in that: Applied to a network device, the method comprises: Auxiliary information is sent to a terminal device, where the auxiliary information is used by the terminal device to determine whether to perform uplink frequency offset pre-compensation on a first uplink signal, and if the determination result is that uplink frequency offset pre-compensation is required, uplink frequency offset pre-compensation is performed on the first uplink signal.

21. The method according to claim 20, characterized in that The auxiliary information includes at least one of the following: A moving speed threshold of the terminal device; The effective time of the moving speed of the terminal device; Speed ​​difference threshold and uplink frequency deviation pre-compensation interruption duration.

22. The method according to claim 20, characterized in that The auxiliary information includes at least one of the following: The maximum absolute value frequency deviation that can be processed by the network device; The frequency deviation effective time of the terminal device; Frequency deviation value threshold and uplink frequency deviation pre-compensation interruption duration.

23. A frequency deviation compensation device, characterized in that: Applied to network equipment, the device comprises: A first receiving module is used to receive first information sent by a terminal device, where the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation; A first judgment module, configured to judge whether to perform downlink frequency offset compensation on the first downlink signal based on the first information; The first compensation module is configured to perform downlink frequency offset compensation on the first downlink signal when a judgment result shows that downlink frequency offset compensation is required.

24. A frequency deviation compensation device, characterized in that: Applied to a terminal device, the device comprises: A first sending module, configured to send first information to a network device, wherein the first information is used to indicate at least one of the following: a position positioning capability of the terminal device, a speed acquisition capability of the terminal device, a frequency deviation tracking capability of the terminal device, and a need for the network device to perform frequency deviation compensation; The second receiving module is used to receive a downlink signal sent by the network device after performing downlink frequency offset compensation based on the first information.

25. A frequency deviation compensation device, characterized in that: Applied to a terminal device, the device comprises: A third receiving module, used for receiving auxiliary information sent by the network device; A second judgment module, used for judging whether to perform uplink frequency offset pre-compensation on the first uplink signal based on the auxiliary information and the status information of the terminal device; The second compensation module is configured to perform uplink frequency offset pre-compensation on the first uplink signal when a judgment result shows that uplink frequency offset pre-compensation is required.

26. A frequency deviation compensation device, characterized in that: Applied to network equipment, the device comprises: The second sending module is used to send auxiliary information to the terminal device, and the auxiliary information is used by the terminal device to determine whether to pre-compensate the first uplink signal for uplink frequency offset, and if the judgment result is that uplink frequency offset pre-compensation is required, pre-compensate the first uplink signal for uplink frequency offset.

27. A communication device, characterized in that: include: A processor, a memory, and a program stored in the memory and executable on the processor, wherein when the program is executed by the processor, the steps of the method according to any one of claims 1 to 22 are implemented.

28. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of any one of the methods of claims 1-22 are implemented.

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