Information transmission method and device, related equipment and storage medium

Abstract

The invention discloses an information transmission method and device, a terminal, network equipment and a storage medium. The method comprises the following steps that: a terminal receives first information, and the first information comprises information related to frequency errors sent by network equipment; and determining the frequency error of the auxiliary carrier by using the first information.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to an information transmission method, apparatus, related equipment and storage medium. Background Art

[0002] In the related art, the goal of network energy saving is achieved by avoiding or reducing the sending of reference signals (such as synchronization signal blocks (SSB)) on the secondary carrier. In this case, the terminal determines the frequency error based on the reference signal received on the primary carrier, and synchronizes the secondary carrier frequency with the network side based on the determined frequency error without the secondary carrier reference signal.

[0003] However, in the above situation, the frequency error determined by the terminal is inaccurate, which may cause the problem of Inter-Carrier Interference (ICI). Summary of the invention

[0004] To solve related technical problems, the embodiments of the present application provide an information transmission method, apparatus, related equipment and storage medium.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] The present application provides an information transmission method, which is applied to a terminal and includes:

[0007] Receive first information, wherein the first information includes information related to a frequency error sent by a network device;

[0008] The frequency error of the secondary carrier is determined using the first information.

[0009] In the above solution, the first information includes at least one of the following:

[0010] second information, where the second information indicates whether a difference between a transmission frequency error on the primary carrier and a transmission frequency error on the secondary carrier is less than a first threshold;

[0011] third information, wherein the third information represents a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier;

[0012] Fourth information, wherein the fourth information represents a transmission frequency error range on a primary carrier and a transmission frequency error range on a secondary carrier;

[0013] The fifth information represents a difference between a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier.

[0014] In the above scheme, the first information includes the second information, and when the second information indicates that the difference between the transmission frequency error on the primary carrier and the transmission frequency error on the secondary carrier is less than the first threshold, the using the first information to determine the frequency error of the secondary carrier includes:

[0015] determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero;

[0016] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0017] The total frequency error of the secondary carrier is determined by using the ninth information.

[0018] In the above solution, the first information includes the third information and / or the fourth information, and the using the first information to determine the frequency error of the secondary carrier includes:

[0019] Determine eighth information by using the transmission frequency error information on the main carrier, the tenth information, and the eleventh information in the first information, wherein the tenth information represents a total frequency error on the main carrier, the eleventh information represents a receiving frequency error on the main carrier, and the eighth information represents a Doppler frequency offset on the main carrier;

[0020] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0021] The total frequency error of the secondary carrier is determined by using the transmission frequency error information on the secondary carrier in the first information, the ninth information and the twelfth information, wherein the twelfth information represents the reception frequency error on the secondary carrier.

[0022] In the above solution, the first information includes fifth information, and the using the first information to determine the frequency error of the secondary carrier includes:

[0023] determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero;

[0024] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0025] The total frequency error of the secondary carrier is determined by using the ninth information and the fifth information.

[0026] In the above scheme, the method further includes:

[0027] When the moving speed satisfies a moving speed threshold each time, measuring the total frequency error of the main carrier once to obtain fourteenth information, wherein the fourteenth information includes a corresponding relationship between at least one moving speed threshold and the total frequency error of the main carrier;

[0028] The seventh information is determined using the fourteenth information.

[0029] The embodiment of the present application also provides an information transmission method, which is applied to a network device, including:

[0030] First information is sent to the terminal, where the first information includes information related to a frequency error sent by a network device, and the first information is used to determine a frequency error of a secondary carrier.

[0031] In the above solution, the first information includes at least one of the following:

[0032] second information, where the second information indicates whether a difference between a transmission frequency error on the primary carrier and a transmission frequency error on the secondary carrier is less than a first threshold;

[0033] third information, wherein the third information represents a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier;

[0034] Fourth information, wherein the fourth information represents a transmission frequency error range on a primary carrier and a transmission frequency error range on a secondary carrier;

[0035] The fifth information represents a difference between a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier.

[0036] The embodiment of the present application also provides an information transmission method, which is applied to a terminal, including:

[0037] Thirteenth information is sent, where the thirteenth information represents a receiving frequency error of the terminal on the secondary carrier, and the thirteenth information is used to determine the frequency error of the secondary carrier.

[0038] The embodiment of the present application also provides an information transmission method, which is applied to a network device, including:

[0039] receiving thirteenth information sent by a terminal, wherein the thirteenth information represents a receiving frequency error of the terminal on a secondary carrier;

[0040] The frequency error of the auxiliary carrier is determined by using the thirteenth information.

[0041] In the above scheme, the method further comprises:

[0042] The determined frequency error of the auxiliary carrier and the second threshold are used to determine whether to stop the energy-saving operation; in the energy-saving operation, the reference signal for synchronization is not sent on the auxiliary carrier.

[0043] The present application also provides an information transmission device, including:

[0044] A first receiving unit, configured to receive first information, wherein the first information includes information related to a frequency error sent by a network device;

[0045] The first determining unit is configured to determine a total frequency error of the auxiliary carrier by using the first information.

[0046] The present application also provides an information transmission device, including:

[0047] The first sending unit is used to send first information to the terminal, where the first information includes information related to a frequency error sent by a network device, and the first information is used to determine a frequency error of a secondary carrier.

[0048] The present application also provides an information transmission device, including:

[0049] The second sending unit is used to send thirteenth information, where the thirteenth information represents a receiving frequency error of the terminal on the auxiliary carrier, and the thirteenth information is used to determine the frequency error of the auxiliary carrier.

[0050] The present application also provides an information transmission device, including:

[0051] A second receiving unit, configured to receive thirteenth information sent by the terminal, where the thirteenth information represents a receiving frequency error of the terminal on the secondary carrier;

[0052] The second determining unit is configured to determine a frequency error of the secondary carrier by using the thirteenth information.

[0053] The embodiment of the present application also provides a terminal, comprising: a first processor and a first communication interface; wherein,

[0054] The first communication interface is used to receive first information, wherein the first information includes information related to a frequency error sent by a network device; the first processor is used to determine a frequency error of a secondary carrier using the first information;

[0055] or,

[0056] The first communication interface is used to send thirteenth information, where the thirteenth information represents a receiving frequency error of the terminal on the auxiliary carrier, and the thirteenth information is used to determine the frequency error of the auxiliary carrier.

[0057] The embodiment of the present application further provides a network device, comprising: a second processor and a second communication interface; wherein,

[0058] The second communication interface is used to send first information to the terminal, where the first information includes information related to frequency error sent by the network device, and the first information is used to determine the frequency error of the secondary carrier;

[0059] or,

[0060] The second communication interface is used to receive thirteenth information sent by the terminal, where the thirteenth information represents a receiving frequency error of the terminal on the auxiliary carrier; and the second processor is used to determine the frequency error of the auxiliary carrier using the thirteenth information.

[0061] The embodiment of the present application further provides a terminal, comprising: a first processor and a first memory for storing a computer program that can be run on the processor,

[0062] Wherein, the first processor is used to execute the steps of any of the above-mentioned terminal side methods when running the computer program.

[0063] The embodiment of the present application further provides a network device, comprising: a second processor and a second memory for storing a computer program that can be run on the processor,

[0064] Wherein, the second processor is used to execute the steps of any one of the above-mentioned methods on the network device side when running the computer program.

[0065] An embodiment of the present application also provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above-mentioned methods on the terminal side are implemented, or the steps of any of the above-mentioned methods on the network device side are implemented.

[0066] The information transmission method, apparatus, related equipment and storage medium provided in the embodiments of the present application, the terminal receives the first information sent by the network device, the first information includes information related to the frequency error sent by the network device; the frequency error of the auxiliary carrier is determined by using the first information. Alternatively, the network device receives the thirteenth information sent by the terminal, the thirteenth information represents the receiving frequency error of the terminal on the auxiliary carrier; the frequency error of the auxiliary carrier is determined by using the thirteenth information. In the scheme provided in the embodiments of the present application, when no reference signal for synchronization is sent on the auxiliary carrier, the terminal can accurately determine the frequency error of the auxiliary carrier using the information related to the sending frequency error sent by the network device, thereby avoiding the ICI problem, and then the terminal can achieve frequency synchronization with the auxiliary carrier on the network side based on the determined frequency error of the auxiliary carrier; or, the network device can receive the receiving frequency error sent by the terminal on the auxiliary carrier, and accurately determine the frequency error of the auxiliary carrier based on the receiving frequency error, and then the network device can adjust the information transmission method based on the determined frequency error of the auxiliary carrier, thereby avoiding the ICI problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 This is a flow chart of the first information transmission method according to an embodiment of the present application;

[0068] Figure 2 This is a flow chart of the second information transmission method according to an embodiment of the present application;

[0069] Figure 3 This is a flow chart of the third information transmission method according to an embodiment of the present application;

[0070] Figure 4 This is a flow chart of the fourth information transmission method according to an embodiment of the present application;

[0071] Figure 5 This is a waveform diagram of a rectangular wave demodulated by an example terminal of this application when the carrier frequency offset (CFO) is 1200 Hz;

[0072] Figure 6 A schematic diagram of a process for determining a frequency error of a secondary carrier by an example terminal of the present application;

[0073] Figure 7 A schematic diagram of a flow chart of an example base station determining whether to send a reference signal for synchronization on a secondary carrier in an application of the present application;

[0074] Figure 8 This is a schematic diagram of the structure of the first information transmission device according to an embodiment of the present application;

[0075] Fig. 9 This is a schematic diagram of the structure of the second information transmission device according to the embodiment of the present application;

[0076] Fig.10 This is a schematic diagram of the structure of the third information transmission device according to the embodiment of the present application;

[0077] Fig.11 This is a schematic diagram of the structure of the fourth information transmission device according to the embodiment of the present application;

[0078] Fig.12 This is a schematic diagram of the terminal structure of an embodiment of the present application;

[0079] Fig.13 This is a schematic diagram of the network device structure of an embodiment of the present application;

[0080] Fig.14 This is a schematic diagram of the information transmission system structure of an embodiment of the present application. DETAILED DESCRIPTION

[0081] The present application will be further described in detail below through the accompanying drawings and specific embodiments.

[0082] In the related technology, network energy saving is achieved by avoiding or reducing the sending of SSB on the secondary carrier (abbreviated as SSB-LESS). The terminal determines the main carrier frequency error through the SSB received on the main carrier, and evaluates the secondary carrier frequency error based on the main carrier frequency error, and makes corresponding adjustments based on the evaluated secondary carrier frequency error to achieve the goal of synchronizing the secondary carrier frequency with the network side in the absence of secondary carrier SSB.

[0083] Among them, for a subcarrier (main carrier or auxiliary carrier), the frequency error of the subcarrier includes:

[0084] 1) The transmission frequency error of the base station at the frequency corresponding to the subcarrier, that is, the error between the actual transmission frequency of the base station and the target transmission frequency;

[0085] 2) Doppler frequency shift, which can be calculated by the following formula:

[0086]

[0087] Among them, f d represents the Doppler frequency shift, v represents the moving speed of the receiving end, θ represents the angle between the line connecting the receiving end and the transmitting end and the moving direction of the receiving end, c represents the speed of light, and f represents the frequency point corresponding to the subcarrier.

[0088] 3) The receiving frequency error of the terminal at the frequency point corresponding to the subcarrier.

[0089] On the other hand, according to the frequency error defined for the minimum radio frequency requirement in the related art, it can be determined that the above three types of frequency errors all need to be evaluated.

[0090] However, in the implementation mode of achieving network energy saving by avoiding or reducing the transmission of SSB on the auxiliary carrier, the terminal can obtain the total frequency error of the main carrier through the main carrier SSB, but is not clear about each type of frequency error; among them, although the Doppler frequency offset can be calculated by the frequency error between the main carrier and the auxiliary carrier, since the Doppler frequency offset corresponding to the main carrier cannot be known, the Doppler frequency offset of the auxiliary carrier cannot be accurately evaluated. On the other hand, in order to reduce the deployment cost, it is necessary to reuse the deployed base station hardware equipment as much as possible. The problem is that some base station hardware equipment may have a large base station transmission frequency error. Taking into account the base station transmission frequency error, the terminal receiving frequency error and the Doppler frequency offset, the final total auxiliary carrier frequency error will be too large, that is, the terminal cannot accurately evaluate the total auxiliary carrier frequency error, which will cause the ICI problem.

[0091] Based on this, in various embodiments of the present application, when no reference signal for synchronization is sent on the auxiliary carrier, the terminal can accurately determine the frequency error of the auxiliary carrier using the information related to the transmission frequency error sent by the network device, thereby avoiding the ICI problem, and then the terminal can achieve frequency synchronization with the auxiliary carrier on the network side based on the determined frequency error of the auxiliary carrier. Alternatively, the network device can accurately determine the frequency error of the auxiliary carrier based on the received frequency error on the auxiliary carrier sent by the terminal, and then the network device can adjust the information transmission method based on the determined frequency error of the auxiliary carrier, thereby avoiding the ICI problem.

[0092] First, a scheme is described in which a terminal determines a frequency error of a secondary carrier by sending frequency error related information sent by a network device.

[0093] The present application embodiment provides an information transmission method, which is applied to a terminal, such as Figure 1 As shown, the method includes:

[0094] Step 101: Receive first information, where the first information includes information related to a frequency error sent by a network device;

[0095] Step 102: Determine the frequency error of the secondary carrier using the first information.

[0096] Here, in actual application, the network device may be a base station, and the embodiment of the present application does not limit the name of the network device, as long as its function is realized. The terminal may be called user equipment (UE), terminal equipment, equipment, or user, etc., and the embodiment of the present application does not limit this.

[0097] In actual application, the network device can send the first information to the terminal through radio resource control (RRC, Radio Resource Control) signaling, or media access control control element (MAC CE, Media Access Control Control Element), or downlink control information (DCI, Downlink Control Information).

[0098] In actual application, the terminal can determine the transmission frequency error, the reception frequency error and the Doppler frequency offset on the auxiliary carrier, and then use formula (2) to determine the total frequency error of the auxiliary carrier:

[0099] T S =f BS,S +f UE,S +f D,S (2)

[0100] Among them, T S Represents the total frequency error of the auxiliary carrier, f BS,S represents the transmission frequency error on the auxiliary carrier, f UE,S represents the receiving frequency error on the auxiliary carrier, f D,S Indicates the Doppler frequency offset of the secondary carrier.

[0101] It can be understood that, for the main carrier, as shown in formula (3), the terminal can use the transmission frequency error, the reception frequency error and the Doppler frequency offset on the main carrier to determine the total frequency error of the main carrier. Specifically, the total frequency error of the main carrier can be determined using formula (3):

[0102] T P =f BS,P +f UE,P +f D,P (3)

[0103] Among them, T P Represents the total frequency error of the main carrier, f BSP Indicates the transmission frequency error on the main carrier, f UE,P represents the receiving frequency error on the main carrier, f D,P Indicates the Doppler frequency shift of the main carrier.

[0104] It should be noted that the terminal determines the receiving frequency error on the main carrier and at the same time determines the receiving frequency error of the auxiliary carrier, and the receiving frequency error includes the frequency error caused by the hardware device of the receiving end.

[0105] Specifically, when the terminal uses a clock and a phase-locked loop to determine the receiving frequency, the specific implementation of the terminal determining the receiving frequency error on the primary carrier and the receiving frequency error on the secondary carrier may include:

[0106] 1) The terminal may use a clock and a phase-locked loop to perform correlation measurement on a main carrier to determine a receiving frequency error on the main carrier, and at the same time, use a clock and a phase-locked loop to perform correlation measurement on an auxiliary carrier to determine a receiving frequency error on the auxiliary carrier;

[0107] 2) The terminal can measure the difference between the receiving frequency error caused by the clock corresponding to the main carrier and the phase-locked loop and the receiving frequency error caused by the clock corresponding to the auxiliary carrier and the phase-locked loop. In this way, when the terminal uses formula (3) and the reference signal used to synchronize the main carrier to determine the receiving frequency error on the main carrier, the terminal can use the receiving frequency error on the main carrier and the difference to determine the receiving frequency error on the auxiliary carrier.

[0108] The embodiment of the present application does not limit the manner in which the terminal determines the receiving frequency error on the primary carrier and the receiving frequency error on the secondary carrier.

[0109] In actual application, the frequency error of the subcarrier can be determined by the reference signal (SSB and / or tracking reference signal (TRS, Tracking Reference Signal) etc.) received on the carrier, and then the determined frequency error is used to achieve synchronization of the corresponding subcarrier.

[0110] The terminal can determine the total frequency error on the main carrier by using the reference signal received on the main carrier. In this way, when the terminal receives the first information, the terminal can use the first information, combined with the total frequency error of the main carrier known to the terminal, the received frequency error on the main carrier and the received frequency error on the auxiliary carrier, to calculate through formula (1), formula (2) and formula (3) to determine the total frequency error of the auxiliary carrier.

[0111] Specifically, in one embodiment, the first information includes at least one of the following:

[0112] second information, where the second information indicates whether a difference between a transmission frequency error on the primary carrier and a transmission frequency error on the secondary carrier is less than a first threshold;

[0113] third information, wherein the third information represents a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier;

[0114] Fourth information, wherein the fourth information represents a transmission frequency error range on a primary carrier and a transmission frequency error range on a secondary carrier;

[0115] The fifth information represents a difference between a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier.

[0116] In actual application, when the first information includes the second information, the terminal can use the second information to determine that the difference between the sending frequency error on the main carrier and the sending frequency error on the auxiliary carrier is less than a preset first threshold. At this time, the terminal can determine that the sending frequency error on the main carrier is equal to the sending frequency error on the auxiliary carrier, and combine the total frequency error of the main carrier, the receiving frequency error on the main carrier and the receiving frequency error on the auxiliary carrier known to the terminal, and calculate through formula (1), formula (2) and formula (3) to determine the total frequency error of the auxiliary carrier.

[0117] Specifically, in one embodiment, when the first information includes the second information, the specific implementation of step 102 may include:

[0118] determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero;

[0119] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0120] The total frequency error of the secondary carrier is determined by using the ninth information.

[0121] Here, in actual application, the first threshold may be determined by the terminal according to an actual application scenario, or may be issued by a network device. The embodiment of the present application does not limit the method for determining the first threshold.

[0122] In actual application, the first speed and the second speed are the moving speeds of the terminal, which can be specifically determined by a speed sensor inside the terminal. The embodiment of the present application does not limit the manner in which the terminal determines the first speed and the second speed.

[0123] Exemplarily, when the moving speed of the terminal is 0 (ie, the first speed), the terminal may determine the total frequency error of the main carrier (ie, the sixth information) by using formula (4).

[0124] T P, v＝0 =f BS,P + f UE,P + f D,P,v＝0 (4)

[0125] Among them, T P,v＝0 represents the total frequency error of the main carrier at the first speed, f BS,P Indicates the transmission frequency error on the main carrier, f UE,P represents the receiving frequency error on the main carrier, f D,P,v＝0 represents the Doppler frequency offset of the main carrier at the first speed. Here, it should be noted that, according to formula (1), when the first speed is (ie, v=0), the Doppler frequency offset is 0, that is, f D,P,v＝0 The value of is 0. At the same time, the terminal can directly measure and determine T P,v＝0 Specifically, the terminal can determine the total frequency error of the main carrier by measuring the reference signal on the main carrier at the first speed. In this way, the terminal can determine the total frequency error of the main carrier by measuring the total frequency error of the main carrier at the first speed (ie, T P,v＝0 ), determine the sum of the main carrier receiving frequency error and the main carrier transmitting frequency error (i.e. f BS,P +f UE,P ).

[0126] At the same time, when the terminal moves at the moving speed when executing step 102 (which can also be understood as the current moving speed, that is, the second speed), the total frequency error of the main carrier (that is, the seventh information) can be expressed by formula (5).

[0127] T P, v =f BS,P + f UE,P + f D,P,v (5)

[0128] Among them, T P,v represents the total frequency error of the main carrier at the second speed, f D,P,v Represents the Doppler frequency offset of the main carrier at the second speed.

[0129] Specifically, the terminal can determine the total frequency error of the main carrier (ie, T P,v ); the terminal may also, before step 102, trigger measurement of a total frequency error of the main carrier corresponding to the current speed threshold each time the moving speed of the terminal meets a preset moving speed threshold. In this way, each time the terminal determines the frequency error of the auxiliary carrier using the first information, it only needs to determine the moving speed threshold closest to the second speed, and the total frequency error of the main carrier corresponding to the moving speed threshold can be determined as the total frequency error of the main carrier corresponding to the second speed (i.e., T P,v ).

[0130] Based on this, in one embodiment, the method may further include:

[0131] When the moving speed satisfies a moving speed threshold each time, measuring the total frequency error of the main carrier once to obtain fourteenth information, wherein the fourteenth information includes a corresponding relationship between at least one moving speed threshold and the total frequency error of the main carrier;

[0132] The seventh information is determined using the fourteenth information.

[0133] Here, the moving speed threshold may be pre-set or determined by the terminal according to an actual scenario. The embodiment of the present application does not limit the method for determining the moving speed threshold.

[0134] Exemplarily, it can be assumed that the moving speed thresholds include: threshold 1 = 10km / h, threshold 2 = 20km / h, threshold 3 = 30km / h, threshold 4 = 40km / h. When the moving speed of the terminal reaches one of the moving speed thresholds, the total frequency error of the main carrier corresponding to the moving speed is measured once. That is, when the moving speed of the terminal reaches 10km / h, 20km / h, 30km / h, and 40km / h, respectively, the total frequency error of the main carrier corresponding to the moving speed is measured once, and T is obtained. P,v＝10 , T P,v＝20 , T P,v＝30 , T P,v＝40 , so that the corresponding relationship between the moving speed threshold and the total frequency error of the main carrier can be obtained: {Threshold 1-T P,v＝10 , threshold 2-T P,v＝20 , threshold 3-T P,v＝30 , Threshold 4-T P,v＝40} (i.e., the fourteenth information). Thus, when the terminal determines the frequency error of the auxiliary carrier, assuming that the moving speed of the terminal (i.e., the second speed) is 28 km / h, it can be determined that the moving speed threshold closest to the moving speed of the terminal is threshold 3. At this time, the corresponding relationship can be used to convert T P,v＝30 The total frequency error of the main carrier corresponding to the second speed (ie, the seventh information) is determined.

[0135] It can be known from formula (4) and formula (5) that the terminal can use the total frequency error of the main carrier corresponding to the first speed and the total frequency error of the main carrier corresponding to the second speed to determine the Doppler frequency offset of the main carrier at the second speed (i.e., the eighth information). Specifically, the Doppler frequency offset of the main carrier at the second speed can be determined using formula (6).

[0136] f D,P,v = T P, v -T P,v＝0 (6)

[0137] At the same time, it can be seen from formula (1) that the Doppler frequency offset is positively correlated with the frequency of the subcarrier. Therefore, at the second speed, the terminal can use the actual frequencies of the received main carrier and auxiliary carrier, combined with the Doppler frequency offset of the main carrier, to determine the Doppler frequency offset of the auxiliary carrier (that is, the ninth information).

[0138] In this way, the terminal can determine the total frequency error of the auxiliary carrier corresponding to the second speed through formula (7).

[0139] T S, v = T P, v＝0 +delta1+ f D,S,v (7)

[0140] Among them, T S,v represents the total frequency error of the auxiliary carrier at the second speed, T P,v＝0 represents the total frequency error of the main carrier at the first speed (specifically, it may include the transmission frequency error f on the main carrier BS,P and the receiving frequency error f on the main carrier UE,P ), delta1 represents the difference between the receiving frequency error on the auxiliary carrier and the receiving frequency error on the main carrier, f D,S,v Indicates the Doppler frequency offset of the auxiliary carrier at the second speed (ie, the ninth information).

[0141] Here, it should be noted that the reason for the existence of delta1 (i.e., the reason for the difference between the receiving frequency error on the auxiliary carrier and the receiving frequency error on the main carrier) includes: the terminal uses different clocks and / or phase-locked loops when determining the receiving frequency errors of the main carrier and the auxiliary carrier. The terminal can determine the value of delta1 by measuring the frequency error of the main carrier and the frequency error of the auxiliary carrier.

[0142] Due to the transmission frequency error f on the auxiliary carrier BS,S Equal to f BS,P , and f UE,P The summation result with delta1 can represent the receiving frequency error f on the auxiliary carrier UE,S Thus, in combination with formula (2), it can be known that when the first information includes the second information, when no reference signal for synchronization is sent on the auxiliary carrier, the terminal can accurately determine the total frequency error of the auxiliary carrier by using the second information, thereby avoiding the ICI problem. Then, the terminal can achieve auxiliary carrier frequency synchronization with the network side based on the determined total frequency error of the auxiliary carrier.

[0143] In actual application, when the second information indicates that the difference between the transmitting frequency error on the main carrier and the transmitting frequency error on the auxiliary carrier is greater than or equal to the first threshold, the terminal can determine that the transmitting frequency error on the main carrier is not equal to the transmitting frequency error on the auxiliary carrier. At this time, the terminal can use at least one of the third information, the fourth information, and the fifth information contained in the first information to determine the frequency error of the auxiliary carrier.

[0144] In actual application, when the first information includes the fifth information, the terminal can use the fifth information to determine the difference between the sending frequency error on the main carrier and the sending frequency error on the auxiliary carrier, and combine the total frequency error of the main carrier, the receiving frequency error on the main carrier and the receiving frequency error on the auxiliary carrier known to the terminal, and calculate through formula (1), formula (2) and formula (3) to determine the total frequency error of the auxiliary carrier.

[0145] Specifically, in one embodiment, when the first information includes the fifth information, the specific implementation of step 102 may include:

[0146] determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero;

[0147] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0148] The total frequency error of the secondary carrier is determined by using the ninth information and the fifth information.

[0149] Here, it should be noted that: the specific processing process of the terminal determining the ninth information has been described in detail above and will not be repeated here.

[0150] Exemplarily, based on the above example, after the terminal determines the Doppler frequency offset on the auxiliary carrier (i.e., the ninth information), it can use the difference between the transmission frequency error on the main carrier and the transmission frequency error on the auxiliary carrier (i.e., the fifth information). Specifically, the total frequency error of the auxiliary carrier can be determined using formula (8).

[0151] T S = T P, v＝0 +delta2+delta1+ f D,S (8)

[0152] Among them, TS represents the total frequency error of the auxiliary carrier, T P,v＝0 represents the total frequency error of the main carrier at the first speed (specifically, it may include f BS,P and f UE,P ), delta2 represents the difference between the transmission frequency error on the primary carrier and the transmission frequency error on the secondary carrier (ie, the fifth information), delta1 represents the difference between the reception frequency error on the secondary carrier and the reception frequency error on the primary carrier, f D,S,v represents the Doppler frequency offset of the secondary carrier (ie, the ninth information). BS,P The sum of delta2 and the transmission frequency error f on the auxiliary carrier can be expressed as BS,S , and f UE,P The summation result with delta1 can represent the receiving frequency error f on the auxiliary carrier UE,S Thus, in combination with formula (2), when the first information includes the fifth information, when no reference signal for synchronization is sent on the auxiliary carrier, the terminal can also use the fifth information to determine the total frequency error of the auxiliary carrier, and use the total frequency error of the auxiliary carrier for carrier synchronization, thereby avoiding the destruction of the orthogonality between subcarriers by ICI and achieving accurate demodulation of the auxiliary carrier.

[0153] In actual application, when the first information includes the third information and / or the fourth information, the terminal can use the third information to determine the sending frequency error on the main carrier and the sending frequency error on the auxiliary carrier, and / or use the fourth information to determine the sending frequency error range on the main carrier and the sending frequency error range on the auxiliary carrier, and combine the total frequency error of the main carrier, the receiving frequency error on the main carrier and the receiving frequency error on the auxiliary carrier known to the terminal, and calculate through formula (1), formula (2) and formula (3) to determine the total frequency error of the auxiliary carrier.

[0154] Specifically, in one embodiment, when the first information includes the third information and / or the fourth information, the specific implementation of step 102 may include:

[0155] Determine eighth information by using the transmission frequency error information on the main carrier, the tenth information, and the eleventh information in the first information, wherein the tenth information represents a total frequency error on the main carrier, the eleventh information represents a receiving frequency error on the main carrier, and the eighth information represents a Doppler frequency offset on the main carrier;

[0156] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0157] The total frequency error of the secondary carrier is determined by using the transmission frequency error information on the secondary carrier in the first information, the ninth information and the twelfth information, wherein the twelfth information represents the reception frequency error on the secondary carrier.

[0158] Here, in actual application, when the first information includes the fourth information, the terminal can use the fourth information to determine the transmission frequency error range on the main carrier and the transmission frequency error range on the auxiliary carrier. The terminal can use the transmission frequency error range on the main carrier to determine the transmission frequency error on the main carrier, and use the transmission frequency error range on the auxiliary carrier to determine the transmission frequency error on the auxiliary carrier.

[0159] Specifically, the terminal can determine the transmission frequency error on the main carrier from the transmission frequency error range on the main carrier; and determine the transmission frequency error on the auxiliary carrier from the transmission frequency error range on the auxiliary carrier in one of the following ways: taking the maximum value, taking the minimum value, taking the average value, etc.

[0160] In actual application, the terminal may determine the total frequency error of the secondary carrier by using the transmission frequency error on the primary carrier and the transmission frequency error on the secondary carrier.

[0161] Exemplarily, it can be seen from formula (3) that the terminal can determine the Doppler frequency offset on the main carrier by using the total frequency error of the main carrier, the transmission frequency error on the main carrier and the reception frequency error on the main carrier.

[0162] Since the terminal can obtain the total frequency error of the main carrier (i.e., the tenth information) and the receiving frequency error on the main carrier (i.e., the eleventh information) through measurement, when the terminal can determine the sending frequency error on the main carrier using the third information and / or the fourth information, the terminal can calculate the Doppler frequency offset on the main carrier (i.e., the eighth information) through formula (3).

[0163] At the same time, it can be seen from formula (1) that the Doppler frequency offset is positively correlated with the frequency of the subcarrier. Therefore, the terminal can use the actual frequencies of the received main carrier and auxiliary carrier, combined with the Doppler frequency offset of the main carrier, to determine the Doppler frequency offset of the auxiliary carrier (i.e., the ninth information).

[0164] It can be seen from formula (2) that the terminal can determine the total frequency error of the secondary carrier by using the Doppler frequency offset on the secondary carrier, the transmission frequency error on the secondary carrier and the reception frequency error on the secondary carrier.

[0165] Since the terminal can obtain the receiving frequency error (i.e., the twelfth information) on the auxiliary carrier by measurement, when the terminal can determine the sending frequency error on the auxiliary carrier by using the third information and / or the fourth information, and determine the Doppler frequency offset of the auxiliary carrier by using the Doppler frequency offset of the main carrier, the terminal can calculate the total frequency error of the auxiliary carrier by formula (2). In this way, when the first information includes the third information and / or the fourth information, in the case where no reference signal for synchronization is sent on the auxiliary carrier, the terminal can also determine the total frequency error of the auxiliary carrier by using the third information and / or the fourth information, and use the total frequency error of the auxiliary carrier for carrier synchronization, thereby avoiding the destruction of the orthogonality between subcarriers by ICI and achieving accurate demodulation of the auxiliary carrier.

[0166] In actual application, after step 102, the terminal may further use the frequency error of the auxiliary carrier to adjust the frequency point of the auxiliary carrier to complete the frequency synchronization of the auxiliary carrier.

[0167] Here, in actual application, the terminal adjusts the frequency point of the auxiliary carrier array, and the specific implementation of completing the auxiliary carrier frequency synchronization can be understood based on relevant technologies, and the embodiments of the present application are not limited to this.

[0168] Accordingly, the embodiment of the present application also provides an information transmission method, which is applied to a network device, such as Figure 2 As shown, the method includes:

[0169] Step 201: Send first information to a terminal, where the first information includes information related to a frequency error sent by a network device, and the first information is used to determine a frequency error of a secondary carrier.

[0170] In actual application, in one embodiment, before step 201, the method may further include:

[0171] Step 200: Obtain the first information.

[0172] In actual application, the network device can measure the difference between the actual transmission frequency and the target transmission frequency, obtain information related to the transmission frequency error on the main carrier and information related to the transmission frequency error on the auxiliary carrier, and then use the information related to the transmission frequency error on the main carrier and the information related to the transmission frequency error on the auxiliary carrier to determine the first information.

[0173] In the information transmission method provided by the embodiment of the present application, the terminal receives first information sent by a network device, the first information includes information related to a frequency error sent by the network device; the frequency error of the auxiliary carrier is determined by using the first information. In the scheme provided by the embodiment of the present application, when no reference signal for synchronization is sent on the auxiliary carrier, the terminal can accurately determine the frequency error of the auxiliary carrier by using the information related to the frequency error sent by the network device, thereby avoiding the ICI problem, and then the terminal can achieve frequency synchronization with the auxiliary carrier on the network side based on the determined frequency error of the auxiliary carrier.

[0174] Secondly, a scheme for determining the frequency error of the secondary carrier by the network device receiving the received frequency error on the secondary carrier sent by the terminal is described.

[0175] The present application also provides an information transmission method, which is applied to a terminal, such as Figure 3 As shown, the method includes:

[0176] Step 301: Send thirteenth information, where the thirteenth information represents a receiving frequency error of the terminal on the secondary carrier, and the thirteenth information is used to determine the frequency error of the secondary carrier.

[0177] In actual application, the terminal may send (also understood as reporting) the thirteenth information to the network device through the terminal capability information.

[0178] In actual application, in one embodiment, before step 301, the method may further include:

[0179] Step 300: Obtain the thirteenth information.

[0180] Specifically, the terminal may measure the receiving frequency on the secondary carrier, and determine the receiving frequency error on the secondary carrier by using the difference between the receiving frequency and a preset value.

[0181] Accordingly, the embodiment of the present application also provides an information transmission method, which is applied to a network device, such as Figure 4 As shown, the method includes:

[0182] Step 401: receiving thirteenth information sent by a terminal, where the thirteenth information represents a receiving frequency error of the terminal on a secondary carrier;

[0183] Step 402: Determine the frequency error of the auxiliary carrier using the thirteenth information.

[0184] In actual application, the network device can use the thirteenth information to determine the receiving frequency error of the terminal on the auxiliary carrier, and use the receiving frequency error on the auxiliary carrier to determine the frequency error of the auxiliary carrier.

[0185] Exemplarily, it can be seen from formula (2) that the network device can determine the total frequency error of the secondary carrier by using the Doppler frequency offset on the secondary carrier, the transmission frequency error on the secondary carrier and the reception frequency error on the secondary carrier.

[0186] Since the network device can obtain the transmission frequency error on the auxiliary carrier by measurement, and at the same time, the network device can assume that the terminal moves at a preset moving speed, and the moving direction is perpendicular to the line connecting the network device and the terminal, the Doppler frequency offset on the auxiliary carrier at this time can be calculated by using formula (1). Therefore, when the network device can determine the receiving frequency error on the auxiliary carrier by using the thirteenth information, the network device can calculate the total frequency error of the auxiliary carrier by using formula (2). The preset moving speed can specifically include the maximum moving speed that the terminal can reach.

[0187] In the related art, network energy saving is achieved through SSB-LESS. Since SSB-LESS does not need to send SSB reference signals on the auxiliary carrier, the transmission load is low and the energy consumption is low.

[0188] However, when the network device performs energy-saving operation (i.e., when the SSB-LESS function is turned on), the terminal cannot accurately evaluate the frequency error of the auxiliary carrier. If the frequency error of the auxiliary carrier is too large, ICI will result. At this time, the network device determines that the energy-saving operation needs to be stopped, that is, the corresponding SSB information is configured for the auxiliary carrier (which can also be understood as stopping the use of SSB-LESS), or the network device determines that the auxiliary carrier cannot achieve correct signal transmission and stops sending the auxiliary carrier (which can also be understood as stopping the configuration of the secondary cell (Scell, Secondary Cell)).

[0189] Based on this, in one embodiment, the method may further include:

[0190] The determined frequency error of the auxiliary carrier and the second threshold are used to determine whether to stop the energy-saving operation; in the energy-saving operation, the reference signal for synchronization is not sent on the auxiliary carrier.

[0191] Here, in actual application, the second threshold is pre-set, and the network device can determine the maximum allowable frequency error of the auxiliary carrier after fast Fourier transform (FFT) by setting the maximum allowable ICI level, and determine the maximum allowable frequency error as the second threshold. Specifically, the maximum allowable frequency error can be determined using formula (9).

[0192]

[0193] Among them, ω (ν)(τ) represents ICI, τ represents the subcarrier spacing, M represents the number of subcarriers, ν represents the auxiliary carrier frequency, and ε (ν) Indicates the normalized value of the secondary carrier frequency error relative to the subcarrier spacing.

[0194] In actual application, when the frequency error of the auxiliary carrier is greater than the second threshold, the network device stops the energy-saving operation, that is, sends a reference signal for synchronization on the auxiliary carrier, so that the terminal can use the reference signal for synchronization sent on the auxiliary carrier to perform frequency synchronization of the auxiliary carrier and achieve accurate demodulation.

[0195] When the frequency error of the auxiliary carrier is less than or equal to the second threshold, the network device does not stop (can also be understood as continuing or starting) the energy-saving operation, that is, no reference signal for synchronization is sent on the auxiliary carrier. At this time, the ICI between the main carrier and the auxiliary carrier received by the terminal is within the allowable range, and the terminal can accurately demodulate the auxiliary carrier.

[0196] In the information transmission method provided in the embodiment of the present application, the network device receives the thirteenth information sent by the terminal, and the thirteenth information represents the receiving frequency error of the terminal on the auxiliary carrier; the frequency error of the auxiliary carrier is determined by using the thirteenth information. In the scheme provided in the embodiment of the present application, the network device can receive the receiving frequency error on the auxiliary carrier sent by the terminal, and accurately determine the frequency error of the auxiliary carrier based on the receiving frequency error, and then the network device can adjust the information transmission mode based on the determined frequency error of the auxiliary carrier, avoiding the ICI problem.

[0197] The present application is described in further detail below in conjunction with application examples.

[0198] When the terminal is demodulating, the carrier frequency received by the terminal is not synchronized with the carrier frequency on the base station side, that is, CFO exists. CFO will cause ICI problems, resulting in the inability to correctly demodulate the signal. For example, when CFO is 1200Hz, when the terminal demodulates the signal corresponding to the rectangular wave, the demodulated waveform will produce the following Figure 5 In the related art, the terminal performs main carrier frequency synchronization and auxiliary carrier frequency synchronization by receiving a reference signal for synchronization sent by the network side, thereby compensating for CFO and avoiding the generation of ICI.

[0199] In the related technology, research on feasibility analysis of network energy saving is being carried out, mainly including achieving the goal of network energy saving through SSB-LESS. This requires that the terminal can also achieve frequency synchronization with the auxiliary carrier on the network side without sending SSB on the auxiliary carrier.

[0200] At the same time, in order to reduce deployment costs, it is necessary to reuse the deployed base station hardware equipment as much as possible. However, some base station hardware equipment may have a large transmission frequency error, which in turn leads to a large frequency error of the auxiliary carrier. Since the terminal cannot accurately evaluate the total auxiliary carrier frequency error when the base station performs energy-saving operations, ICI is generated. The base station needs to be able to judge the error frequency of the auxiliary carrier to determine whether to perform energy-saving operations.

[0201] Based on this, the system of the application example of the present application includes a base station (i.e., the above-mentioned network device) and a terminal. On the one hand, the terminal can also use the transmission frequency error related information sent by the network device to accurately determine the frequency error of the auxiliary carrier and perform carrier synchronization, thereby avoiding the destruction of the orthogonality between subcarriers by ICI and achieving accurate demodulation of the auxiliary carrier; on the other hand, the network device can determine whether to send a reference signal for synchronization on the auxiliary carrier based on the frequency error of the auxiliary carrier to ensure that the terminal can accurately demodulate the auxiliary carrier.

[0202] like Figure 6 As shown, the process of the terminal determining the frequency error of the secondary carrier includes the following steps:

[0203] Step 601: The base station sends base station sending frequency error information (ie, the first information mentioned above) to the terminal;

[0204] Here, in actual application, the information related to the sending frequency error caused by the base station hardware equipment when the base station sends the frequency error information can also be called the sending frequency error information, specifically including the sending frequency error information on the main carrier and the sending frequency error information on the auxiliary carrier.

[0205] In actual application, the base station may send (also be understood as sending down) the frequency error information to the terminal via an RRC message, MAC CE information, or DCI information on the main carrier.

[0206] In actual application, the base station sending the frequency error information may specifically include at least one of the following:

[0207] 1) The transmission frequency error on the primary carrier and the transmission frequency error on the secondary carrier are less than a threshold value 1 (i.e., the second information above);

[0208] 2) the error of the transmission frequency error on the primary carrier and the error of the transmission frequency error on the secondary carrier (i.e., the third information above), and / or, the error range of the transmission frequency error on the primary carrier and the error range of the transmission frequency error on the secondary carrier (i.e., the fourth information above);

[0209] 3) The difference between the transmission frequency error on the primary carrier and the transmission frequency error on the secondary carrier (ie, the fifth information mentioned above).

[0210] Here, it should be noted that when the base station uses the same radio frequency front end to send the main carrier and the auxiliary carrier, it can be considered that the transmission frequency error on the main carrier and the transmission frequency error on the auxiliary carrier are less than a threshold value of 1. When the transmission frequency error on the main carrier and the transmission frequency error on the auxiliary carrier are less than a threshold value of 1, in subsequent steps, the terminal considers that the transmission frequency error on the main carrier is the same as the transmission frequency error on the auxiliary carrier.

[0211] Alternatively, the terminal may also determine, by a preset provision (also referred to as a preset rule), that the transmission frequency error on the main carrier and the transmission frequency error on the auxiliary carrier are less than a threshold value 1 by using the main carrier frequency band and the auxiliary carrier frequency band measured by the terminal, and further determine that the transmission frequency error on the main carrier is the same as the transmission frequency error on the auxiliary carrier. The preset provision may include:

[0212] 1) The difference between the lower limit of the frequency range of the main carrier frequency band (which can also be understood as the minimum value) and the lower limit of the frequency range of the auxiliary carrier frequency band is less than a preset threshold, and / or the difference between the upper limit of the frequency range of the main carrier frequency band (which can also be understood as the maximum value) and the upper limit of the frequency range of the auxiliary carrier frequency band is less than a preset threshold;

[0213] 2) The frequency range of the main carrier frequency band and the frequency range of the auxiliary carrier frequency band both belong to the preset frequency range (which can also be understood as a frequency subset, such as the range defined by (1.7 GHz, 2.7 GHz)).

[0214] When the primary carrier frequency band and the secondary carrier frequency band meet the above preset regulations, the terminal can consider that the transmission frequency error on the primary carrier is the same as the transmission frequency error on the secondary carrier.

[0215] Of course, the terminal may also specify that, when the base station transmit frequency error information sent by the base station is not received (ie, the base station does not send the base station transmit frequency error information), the terminal may consider that the transmit frequency error on the primary carrier is the same as the transmit frequency error on the secondary carrier.

[0216] Step 602: The terminal estimates the frequency error of the secondary carrier by using the base station sending frequency error information sent by the base station and the terminal receiving frequency error information determined by the terminal;

[0217] Here, in actual application, the terminal receiving frequency error information includes the terminal receiving frequency error on the main carrier (in this application example, represented as f UEP ), the receiving frequency error on the auxiliary carrier (expressed as f in this application example) UE,S ), and the difference between the two receiving frequency errors (expressed as delta1 in this application example). Specifically, f UE,S It can be expressed as f UE,PThe sum of delta1 (i.e. f UE,S =f UE,P +delta1).

[0218] In actual application, as shown in formula (2), the frequency error of the auxiliary carrier (in this application example, represented as T S ) at least includes: the base station transmission frequency error on the auxiliary carrier (in this application example, represented as f BS,S ), f UE,S , the Doppler frequency offset on the secondary carrier (expressed as f in this application example) D,S ); the total frequency error of the main carrier (expressed as T in this application example) P ) at least includes: the base station transmission frequency error on the main carrier (in this application example, represented as f BS,P ), f UE,P , the Doppler frequency shift on the main carrier (expressed as f in this application example) D,P ).

[0219] In actual application, the terminal can perform different steps to evaluate T according to the received frequency error information sent by different base stations. S .

[0220] i) When the frequency error information sent by the base station includes an error range of a transmission frequency error on a primary carrier and an error range of a transmission frequency error on an auxiliary carrier, the terminal may first determine the error range by using the frequency error information sent by the base station, and determine f based on a preset rule. BS,P With f BS,S The preset rules may include: taking the maximum value (also known as the upper limit), taking the minimum value (also known as the lower limit), taking the average value, etc. At the same time, the terminal may determine f by measuring UE,P (i.e. the eleventh information above) and f UE,S The terminal may also use the reference signal for synchronization corresponding to the primary carrier to determine T P (ie, the tenth information mentioned above). In this way, the terminal can use T based on formula (3) P 、f UE,P 、f BS,P , determine f D,P (That is, the eighth information mentioned above).

[0221] It can be seen from formula (1) that the Doppler frequency offset is positively correlated with the carrier frequency. The terminal can measure the receiving frequency of the main carrier and the auxiliary carrier, and combine formula (1) to use f D,P Calculate f D,S (ie, the ninth information mentioned above). Furthermore, the terminal can use f based on formula (2) D,S 、fUE,S 、f BS,S , determine T S .

[0222] ii) When the frequency error information sent by the base station includes the frequency error of the primary carrier and the frequency error of the secondary carrier being less than a threshold value 1, the terminal may consider that f BS,P With f BS,S same.

[0223] At this time, the terminal can use the reference signal for synchronization corresponding to the main carrier to determine multiple T when the terminal's moving speed is zero (ie, the first speed) and multiple preset moving speed thresholds. P . It can be represented by T P,v＝0 Indicates the T corresponding to when the terminal moving speed is zero P (i.e. the sixth information mentioned above), T P,v The T corresponding to the moving speed (ie, the second speed) of the terminal when executing step 602 is represented by P (ie, the seventh information mentioned above). At the same time, the terminal can determine f by measuring UE,P With f UE,S .

[0224] When the moving speed of the terminal is zero, it can be known from formula (1) that f D,P The value of is 0. At this time, the terminal can first use T based on formula (3). P,v＝0 Determine f UE,P With f BS,P The sum of the results, and then use T P,v Determine f D,P (ie, the eighth information mentioned above). Further, the terminal can combine formula (1) and use f D,P Calculate f D,S (That is, the ninth information mentioned above).

[0225] Because f BS,P With f BS,S The same, and f UE,S =f UE,P +delta1, so the terminal can use f based on formula (2) D,S 、f UE,P , delta1, f BS,P , determine T S .

[0226] iii) When the frequency error information sent by the base station includes the difference between the transmission frequency error on the primary carrier and the transmission frequency error on the secondary carrier (ie, the fifth information, represented as delta2 in this application example), the terminal can use the frequency error information sent by the base station to determine f BS,PWith f BS,S The difference between them is delta2 (i.e. f BS,S =f BS,P +delta2).

[0227] At this time, the terminal can perform the same steps as in ii) to obtain f D,S 、f UE,P , delta1, f BS,P , and based on formula (2), using f D,S 、f UE,P , delta1, delta2, f BS,P , determine T S .

[0228] Step 603: The terminal adjusts the frequency point of the auxiliary carrier according to the frequency error of the auxiliary carrier to complete the frequency synchronization of the auxiliary carrier.

[0229] From the above description, it can be seen that the solution provided by the application embodiment of the present application, when no reference signal for synchronization is sent on the auxiliary carrier, the terminal can accurately determine the frequency error of the auxiliary carrier by using the base station frequency error information sent by the base station, thereby avoiding the ICI problem, and then the terminal can achieve auxiliary carrier frequency synchronization with the base station side based on the determined auxiliary carrier frequency error.

[0230] like Figure 7 As shown, the process of the base station determining whether to send a reference signal for synchronization on a secondary carrier includes the following steps:

[0231] Step 701: The terminal reports a receiving frequency error of the terminal on the secondary carrier (ie, the thirteenth information above);

[0232] Here, in actual application, the terminal can measure f UE,S , and report the terminal capability information to the base station UES .

[0233] Step 702: The base station uses the reception frequency error on the secondary carrier reported by the terminal and the base station transmission frequency error on the secondary carrier to estimate the frequency error of the secondary carrier;

[0234] Here, in actual application, the base station may receive the terminal capability information reported by the terminal, and use the terminal capability information to determine f UE,S At the same time, the base station can measure f BS,S .

[0235] The base station can calculate f based on formula (1) by using the transmission frequency of the auxiliary carrier, assuming that the moving speed of the terminal is a preset moving speed (specifically, it can be the maximum moving speed that the terminal can reach) and the moving direction is perpendicular to the connection line between the network device and the terminal. D,S Furthermore, the base station can use f based on formula (2) D,S 、f UE,S 、f BS,S , determine T S .

[0236] Step 703: The base station determines whether to send a reference signal for synchronization on the secondary carrier by using the frequency error of the secondary carrier.

[0237] In actual application, the base station can determine T S Is it greater than the preset error threshold? S When the error is greater than the preset error threshold, the base station sends a reference signal for synchronization on the secondary carrier (which can also be understood as stopping the energy-saving operation or stopping the use of SSB-LESS), and specifically, the corresponding SSB information can be configured for the secondary carrier, so that the terminal can use the reference signal for synchronization sent on the secondary carrier to perform frequency synchronization of the secondary carrier and achieve accurate demodulation. Alternatively, the base station can also choose to consider that the secondary carrier cannot achieve correct signal transmission and stop sending the secondary carrier (which can also be understood as stopping configuring the Scell).

[0238] When T S When it is less than or equal to the preset error threshold, the base station does not send a reference signal for synchronization on the auxiliary carrier (it can also be understood as not stopping the energy-saving operation or not stopping the use of SSB-LESS). At this time, the ICI between the main carrier and the auxiliary carrier received by the terminal is within the allowable range, and the terminal can accurately demodulate the auxiliary carrier.

[0239] The preset error threshold can be determined based on formula (9).

[0240] From the above description, it can be seen that the solution provided by the application embodiment of the present application is that the base station can accurately determine the frequency error of the auxiliary carrier based on the received frequency error sent by the terminal. In this way, the base station can determine whether to send a reference signal for synchronization on the auxiliary carrier based on the frequency error of the auxiliary carrier, thereby avoiding the ICI problem.

[0241] In order to realize the embodiment of the present application Figure 1 The method shown in the embodiment of the present application also provides an information transmission device, such as Figure 8 As shown, the settings on the terminal include:

[0242] The first receiving unit 801 is configured to receive first information, where the first information includes information related to a frequency error sent by a network device;

[0243] The first determining unit 802 is configured to determine a frequency error of a secondary carrier by using the first information.

[0244] In one embodiment, the first information includes the second information, and when the second information indicates that a difference between a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier is less than a first threshold, the first determining unit 802 is configured to:

[0245] determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero;

[0246] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0247] The total frequency error of the secondary carrier is determined by using the ninth information.

[0248] In one embodiment, the first information includes third information and / or fourth information, and the first determining unit 802 is configured to:

[0249] Determine eighth information by using the transmission frequency error information on the main carrier, the tenth information, and the eleventh information in the first information, wherein the tenth information represents a total frequency error on the main carrier, the eleventh information represents a receiving frequency error on the main carrier, and the eighth information represents a Doppler frequency offset on the main carrier;

[0250] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0251] The total frequency error of the secondary carrier is determined by using the transmission frequency error information on the secondary carrier in the first information, the ninth information and the twelfth information, wherein the twelfth information represents the reception frequency error on the secondary carrier.

[0252] In one embodiment, the first information includes fifth information, and the first determining unit 802 is configured to:

[0253] determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero;

[0254] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0255] The total frequency error of the secondary carrier is determined by using the ninth information and the fifth information.

[0256] In one embodiment, the information transmission device further includes:

[0257] a measuring unit, configured to measure a total frequency error of a main carrier once when a moving speed satisfies a moving speed threshold, to obtain fourteenth information, wherein the fourteenth information includes a corresponding relationship between at least one moving speed threshold and a total frequency error of the main carrier;

[0258] Correspondingly, the first determining unit 802 is further configured to determine the seventh information using the fourteenth information.

[0259] In actual application, the first receiving unit 801 can be implemented by a communication interface in the information transmission device; the first determining unit 802 and the measuring unit can be implemented by a processor in the information transmission device.

[0260] In order to realize the embodiment of the present application Figure 2 The method shown in the embodiment of the present application also provides an information transmission device, such as Fig. 9 As shown, it is set on the network device, including:

[0261] The first sending unit 901 is configured to send first information to a terminal, where the first information includes information related to a frequency error sent by a network device, and the first information is used to determine a frequency error of a secondary carrier.

[0262] Specifically, in one embodiment, the information transmission device further includes:

[0263] The first acquiring unit 902 is configured to acquire the first information.

[0264] In actual application, the first sending unit 901 can be implemented by a communication interface in the information transmission device; the first acquiring unit 902 can be implemented by a processor in the information transmission device.

[0265] In order to realize the embodiment of the present application Figure 3The method shown in the embodiment of the present application also provides an information transmission device, such as Fig.10 As shown, the settings on the terminal include:

[0266] The second sending unit 1001 is configured to send thirteenth information, where the thirteenth information represents a receiving frequency error of the terminal on the secondary carrier, and the thirteenth information is used to determine the frequency error of the secondary carrier.

[0267] Specifically, in one embodiment, the information transmission device further includes:

[0268] The second acquiring unit 1002 is configured to acquire the thirteenth information.

[0269] In actual application, the second sending unit 1001 can be implemented by a communication interface in the information transmission device; the second acquiring unit 1002 can be implemented by a processor in the information transmission device.

[0270] In order to realize the embodiment of the present application Figure 4 The method shown in the embodiment of the present application also provides an information transmission device, such as Fig.11 As shown, it is set on the network device, including:

[0271] The second receiving unit 1101 is configured to receive thirteenth information sent by the terminal, where the thirteenth information represents a receiving frequency error of the terminal on the secondary carrier;

[0272] The second determining unit 1102 is configured to determine a frequency error of the secondary carrier by using the thirteenth information.

[0273] Specifically, in one embodiment, the information transmission device further includes:

[0274] The judging unit is used to judge whether to stop the energy-saving operation by using the determined frequency error of the auxiliary carrier and the second threshold; in the energy-saving operation, the reference signal for synchronization is not sent on the auxiliary carrier.

[0275] In actual application, the second receiving unit 1101 can be implemented by a communication interface in the information transmission device; the second determining unit 1102 and the judging unit can be implemented by a processor in the information transmission device.

[0276] It should be noted that: the information transmission device provided in the above embodiment only uses the division of the above program units as an example when performing information transmission. In actual applications, the above processing can be assigned to different program units as needed, that is, the internal structure of the device is divided into different program units to complete all or part of the processing described above. In addition, the information transmission device provided in the above embodiment and the information transmission method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

[0277] Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a terminal, such as Fig.12 As shown, the terminal 1200 includes:

[0278] The first communication interface 1201 is capable of exchanging information with a network device;

[0279] The first processor 1202 is connected to the first communication interface 1201 to implement information interaction with the network device, and is used to execute the method provided by one or more technical solutions on the above terminal side when running the computer program; the computer program is stored in the first memory 1203.

[0280] Specifically, in implementing Figure 1 In the process of the method shown, the first communication interface 1201 is used to:

[0281] Receive first information, wherein the first information includes information related to a frequency error sent by a network device;

[0282] The first processor 1202 is configured to:

[0283] The frequency error of the secondary carrier is determined using the first information.

[0284] In one embodiment, the first information includes the second information, and when the second information indicates that a difference between a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier is less than a first threshold, the first processor 1202 is configured to:

[0285] determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero;

[0286] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0287] The total frequency error of the secondary carrier is determined by using the ninth information.

[0288] In one embodiment, the first information includes third information and / or fourth information, and the first processor 1202 is configured to:

[0289] Determine eighth information by using the transmission frequency error information on the main carrier, the tenth information, and the eleventh information in the first information, wherein the tenth information represents a total frequency error on the main carrier, the eleventh information represents a receiving frequency error on the main carrier, and the eighth information represents a Doppler frequency offset on the main carrier;

[0290] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0291] The total frequency error of the secondary carrier is determined by using the transmission frequency error information on the secondary carrier in the first information, the ninth information and the twelfth information, wherein the twelfth information represents the reception frequency error on the secondary carrier.

[0292] In one embodiment, the first information includes fifth information, and the first processor 1202 is configured to:

[0293] determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero;

[0294] Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier;

[0295] The total frequency error of the secondary carrier is determined by using the ninth information and the fifth information.

[0296] In one embodiment, the first processor 1202 is further configured to:

[0297] When the moving speed satisfies a moving speed threshold each time, measuring the total frequency error of the main carrier once to obtain fourteenth information, wherein the fourteenth information includes a corresponding relationship between at least one moving speed threshold and the total frequency error of the main carrier;

[0298] The seventh information is determined using the fourteenth information.

[0299] In realization Figure 3 In the process of the method shown, the first communication interface 1201 is used to:

[0300] Thirteenth information is sent, where the thirteenth information represents a receiving frequency error of the terminal on the secondary carrier, and the thirteenth information is used to determine the frequency error of the secondary carrier.

[0301] Specifically, in one embodiment, the first processor 1202 is used to obtain the thirteenth information.

[0302] It should be noted that the specific processing process of the first processor 1202 and the first communication interface 1201 can be understood by referring to the above method.

[0303] Of course, in actual application, the various components in the terminal 1200 are coupled together through the bus system 1204. It can be understood that the bus system 1204 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1204 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Fig.12 Various buses are labeled as bus system 1204.

[0304] The first memory 1203 in the embodiment of the present application is used to store various types of data to support the operation of the terminal 1200. Examples of such data include: any computer program used to operate on the terminal 1200.

[0305] The method disclosed in the above embodiment of the present application can be applied to the first processor 1202, or implemented by the first processor 1202. The first processor 1202 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of the hardware in the first processor 1202 or an instruction in the form of software. The above-mentioned first processor 1202 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The first processor 1202 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the first memory 1203, and the first processor 1202 reads the information in the first memory 1203 and completes the steps of the above method in combination with its hardware.

[0306] In an exemplary embodiment, terminal 1200 may be implemented by one or more application specific integrated circuits (ASIC), DSP, programmable logic device (PLD), complex programmable logic device (CPLD), field programmable gate array (FPGA), general processor, controller, microcontroller (MCU), microprocessor, or other electronic components to execute the aforementioned method.

[0307] Based on the hardware implementation of the above program modules, and in order to implement the method of the network device side of the embodiment of the present application, the embodiment of the present application also provides a network device, such as Fig.13 As shown, the network device 1300 includes:

[0308] The second communication interface 1301 is capable of exchanging information with the terminal;

[0309] The second processor 1302 is connected to the second communication interface 1301 to implement information interaction with the terminal, and is used to execute the method provided by one or more technical solutions on the network device side when running a computer program; the computer program is stored in the second memory 1303.

[0310] Specifically, in implementing Figure 2 In the method shown, the second communication interface 1301 is used to:

[0311] First information is sent to the terminal, where the first information includes information related to a frequency error sent by a network device, and the first information is used to determine a frequency error of a secondary carrier.

[0312] Specifically, in one embodiment, the second processor 1302 is configured to:

[0313] The first information is obtained.

[0314] In realization Figure 4 In the method shown, the second communication interface 1301 is used to:

[0315] receiving thirteenth information sent by a terminal, wherein the thirteenth information represents a receiving frequency error of the terminal on a secondary carrier;

[0316] The second processor 1302 is configured to:

[0317] The frequency error of the auxiliary carrier is determined by using the thirteenth information.

[0318] Specifically, in one embodiment, the second processor 1302 is further configured to:

[0319] The determined frequency error of the auxiliary carrier and the second threshold are used to determine whether to stop the energy-saving operation; in the energy-saving operation, the auxiliary carrier does not send a reference signal for synchronization.

[0320] It should be noted that the specific processing process of the second processor 1302 and the second communication interface 1301 can be understood by referring to the above method.

[0321] Of course, in actual application, the various components in the network device 1300 are coupled together through the bus system 1304. It can be understood that the bus system 1304 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1304 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, Fig.13 Various buses are labeled as bus system 1304.

[0322] The second memory 1303 in the embodiment of the present application is used to store various types of data to support the operation of the network device 1300. Examples of such data include: any computer program used to operate on the network device 1300.

[0323] The method disclosed in the above embodiment of the present application can be applied to the second processor 1302, or implemented by the second processor 1302. The second processor 1302 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the second processor 1302. The above-mentioned second processor 1302 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The second processor 1302 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the second memory 1303, and the second processor 1302 reads the information in the second memory 1303 and completes the steps of the above method in combination with its hardware.

[0324] In an exemplary embodiment, the network device 1300 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components to perform the aforementioned methods.

[0325] It can be understood that the memory (first memory 1203, second memory 1303) of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a ferromagnetic random access memory, a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), and direct RAM bus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0326] In order to implement the method provided in the embodiment of the present application, the embodiment of the present application also provides an information transmission system, such as Fig.14 As shown, the system includes: a terminal 1401 and a network device 1402.

[0327] Here, it should be noted that the specific processing process of the terminal 1401 and the network device 1402 has been described in detail above and will not be repeated here.

[0328] In an exemplary embodiment, the embodiment of the present application further provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 1203 storing a computer program, the computer program can be executed by the first processor 1202 of the terminal 1200 to complete the steps of the aforementioned terminal-side method, and for another example, including a second memory 1303 storing a computer program, the computer program can be executed by the second processor 1302 of the network device 1300 to complete the steps of the aforementioned network device-side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

[0329] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0330] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0331] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A method for transmitting information, It is characterized in that Applied to terminals, including: Receive first information, wherein the first information includes information related to a frequency error sent by a network device; The frequency error of the secondary carrier is determined using the first information.

2. The method according to claim 1, It is characterized in that The first information includes at least one of the following: second information, where the second information indicates whether a difference between a transmission frequency error on the primary carrier and a transmission frequency error on the secondary carrier is less than a first threshold; third information, wherein the third information represents a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier; Fourth information, wherein the fourth information represents a transmission frequency error range on a primary carrier and a transmission frequency error range on a secondary carrier; The fifth information represents a difference between a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier.

3. The method according to claim 2, It is characterized in that The first information includes the second information, and when the second information indicates that a difference between a transmission frequency error on the primary carrier and a transmission frequency error on the secondary carrier is less than a first threshold, determining the frequency error of the secondary carrier by using the first information includes: determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero; Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier; The total frequency error of the secondary carrier is determined by using the ninth information.

4. The method according to claim 2, It is characterized in that The first information includes third information and / or fourth information, and the using the first information to determine the frequency error of the secondary carrier includes: Determine eighth information by using the transmission frequency error information on the main carrier, the tenth information, and the eleventh information in the first information, wherein the tenth information represents a total frequency error on the main carrier, the eleventh information represents a receiving frequency error on the main carrier, and the eighth information represents a Doppler frequency offset on the main carrier; Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier; The total frequency error of the secondary carrier is determined by using the transmission frequency error information on the secondary carrier in the first information, the ninth information and the twelfth information, wherein the twelfth information represents the reception frequency error on the secondary carrier.

5. The method according to claim 2, It is characterized in that The first information includes fifth information, and the using the first information to determine the frequency error of the secondary carrier includes: determining eighth information by using sixth information and seventh information, wherein the sixth information represents a total frequency error of a main carrier associated with a first speed measured by the terminal, the seventh information represents a total frequency error of a main carrier associated with a second speed measured by the terminal, and the eighth information represents a Doppler frequency shift on the main carrier, the first speed is zero, and the second speed is not zero; Determine ninth information using the eighth information, where the ninth information represents a Doppler frequency shift on the secondary carrier; The total frequency error of the secondary carrier is determined by using the ninth information and the fifth information.

6. The method according to claim 3 or 5, It is characterized in that The method further comprises: When the moving speed satisfies a moving speed threshold each time, measuring the total frequency error of the main carrier once to obtain fourteenth information, wherein the fourteenth information includes a corresponding relationship between at least one moving speed threshold and the total frequency error of the main carrier; The seventh information is determined using the fourteenth information.

7. A method for transmitting information, It is characterized in that Applied to network equipment, including: First information is sent to the terminal, where the first information includes information related to a frequency error sent by a network device, and the first information is used to determine a frequency error of a secondary carrier.

8. The method according to claim 7, It is characterized in that The first information includes at least one of the following: second information, where the second information indicates whether a difference between a transmission frequency error on the primary carrier and a transmission frequency error on the secondary carrier is less than a first threshold; third information, wherein the third information represents a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier; Fourth information, wherein the fourth information represents a transmission frequency error range on a primary carrier and a transmission frequency error range on a secondary carrier; The fifth information represents a difference between a transmission frequency error on a primary carrier and a transmission frequency error on a secondary carrier.

9. A method for transmitting information, It is characterized in that Applied to terminals, including: Thirteenth information is sent, where the thirteenth information represents a receiving frequency error of the terminal on the secondary carrier, and the thirteenth information is used to determine the frequency error of the secondary carrier.

10. A method for transmitting information, It is characterized in that Applied to network equipment, including: receiving thirteenth information sent by a terminal, wherein the thirteenth information represents a receiving frequency error of the terminal on a secondary carrier; The frequency error of the auxiliary carrier is determined by using the thirteenth information.

11. The method according to claim 10, It is characterized in that The method further comprises: The determined frequency error of the auxiliary carrier and the second threshold are used to determine whether to stop the energy-saving operation; in the energy-saving operation, the reference signal for synchronization is not sent on the auxiliary carrier.

12. An information transmission device, It is characterized in that include: A first receiving unit, configured to receive first information, wherein the first information includes information related to a frequency error sent by a network device; The first determining unit is configured to determine a frequency error of a secondary carrier by using the first information.

13. An information transmission device, It is characterized in that include: The first sending unit is used to send first information to the terminal, where the first information includes information related to a frequency error sent by a network device, and the first information is used to determine a frequency error of a secondary carrier.

14. An information transmission device, It is characterized in that include: The second sending unit is used to send thirteenth information, where the thirteenth information represents a receiving frequency error of the terminal on the auxiliary carrier, and the thirteenth information is used to determine the frequency error of the auxiliary carrier.

15. An information transmission device, It is characterized in that include: A second receiving unit, configured to receive thirteenth information sent by the terminal, where the thirteenth information represents a receiving frequency error of the terminal on the secondary carrier; The second determining unit is configured to determine a frequency error of the secondary carrier by using the thirteenth information.

16. A terminal, It is characterized in that include: A first processor and a first communication interface; wherein, The first communication interface is used to receive first information, where the first information includes information related to a frequency error sent by a network device; The first processor is configured to determine a frequency error of a secondary carrier using the first information; or, The first communication interface is used to send thirteenth information, where the thirteenth information represents a receiving frequency error of the terminal on the auxiliary carrier, and the thirteenth information is used to determine the frequency error of the auxiliary carrier.

17. A network device, It is characterized in that include: A second processor and a second communication interface; wherein, The second communication interface is used to send first information to the terminal, where the first information includes information related to frequency error sent by the network device, and the first information is used to determine the frequency error of the secondary carrier; or, The second communication interface is used to receive thirteenth information sent by the terminal, where the thirteenth information represents a receiving frequency error of the terminal on the auxiliary carrier; and the second processor is used to determine the frequency error of the auxiliary carrier using the thirteenth information.

18. A terminal, It is characterized in that include: a first processor and a first memory for storing a computer program executable on the processor, Wherein, when the first processor is used to run the computer program, it executes the steps of the method described in any one of claims 1 to 6, or executes the steps of the method described in claim 9.

19. A network device, It is characterized in that include: a second processor and a second memory for storing a computer program executable on the processor, Wherein, when the second processor is used to run the computer program, it executes the steps of the method described in claim 7 or 8, or executes the steps of the method described in claim 10 or 11.

20. A storage medium having a computer program stored thereon, It is characterized in that When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6, or implements the steps of the method according to claim 7 or 8, or implements the steps of the method according to claim 9, or implements the steps of the method according to claim 10 or 11.

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