CN112040541A - Frequency adjustment method, device, terminal and storage medium - Google Patents
Frequency adjustment method, device, terminal and storage medium Download PDFInfo
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- CN112040541A CN112040541A CN202010968509.0A CN202010968509A CN112040541A CN 112040541 A CN112040541 A CN 112040541A CN 202010968509 A CN202010968509 A CN 202010968509A CN 112040541 A CN112040541 A CN 112040541A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
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Abstract
The application discloses a frequency adjustment method, a frequency adjustment device, a terminal and a storage medium, and belongs to the technical field of communication. The method is executed by a terminal, and comprises the following steps: acquiring a first carrier deviation, wherein the first carrier deviation is used for indicating the deviation between the carrier frequency of a base station and the carrier frequency of a signal sent by a terminal received by the base station; acquiring a second carrier deviation, wherein the second carrier deviation is used for indicating the deviation between the carrier frequency of the terminal and the carrier frequency of a signal sent by the base station and received by the terminal; calculating the Doppler frequency shift of the terminal relative to the base station according to the first carrier deviation and the second carrier deviation; and according to the Doppler frequency shift, carrying out frequency adjustment on the signals which are subsequently received and sent by the base station. The method and the device can avoid inaccuracy caused by the fact that the terminal adjusts the carrier frequency of the downlink signal according to the deviation between the carrier frequency of the signal sent by the base station and the carrier frequency of the signal sent by the terminal, and improve the accuracy of time-frequency synchronization between the terminal and the base station.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a frequency adjustment method, an apparatus, a terminal, and a storage medium.
Background
With the rapid development of the communication technology field, in the daily life of people, more and more scenes are needed for data transmission, such as the use of application programs in terminals, the sending of short messages, the dialing of telephones, and the like.
In these data transmission scenarios, for the transmission established with the communication connection between the terminal and the base station, the terminal and the base station need to maintain time-frequency synchronization in order to ensure normal data transmission between the terminal and the base station. In practical application, due to the fact that the terminal continuously moves and the crystal oscillators used by the terminal and the base station are different, the carrier frequency of the terminal and the frequency of the received base station sending signal can deviate, the terminal usually calculates the frequency deviation between the terminal and the base station according to the downlink signal received by the base station, and therefore the clock frequency and the carrier frequency of the terminal are adjusted, the clock frequency of the terminal and the clock frequency of the base station are kept consistent, and the carrier frequency of the terminal and the carrier frequency of the base station are kept consistent.
At present, in the above scheme, the deviation directly calculated by the terminal according to the downlink signal sent by the base station may include doppler shift, so that timing drift may occur when the terminal performs time-frequency synchronization, and the accuracy of time-frequency synchronization adjustment between the terminal and the base station is reduced.
Disclosure of Invention
The embodiment of the application provides a frequency adjustment method, a frequency adjustment device, a terminal and a storage medium, which can improve the accuracy of time-frequency synchronization between the terminal and a base station. The technical scheme is as follows:
in one aspect, an embodiment of the present application provides a frequency adjustment method, where the method is performed by a terminal, and the method includes:
acquiring a first carrier deviation, wherein the first carrier deviation is used for indicating the deviation between the local carrier frequency of a base station and the carrier frequency of a signal sent by the terminal received by the base station;
acquiring a second carrier deviation, wherein the second carrier deviation is used for indicating the deviation between the local carrier frequency of the terminal and the carrier frequency of the signal sent by the base station and received by the terminal;
calculating the Doppler frequency shift of the terminal relative to the base station according to the first carrier deviation and the second carrier deviation;
and adjusting the frequency of the signals sent by the base station and received subsequently according to the Doppler frequency shift.
In one aspect, an embodiment of the present application provides a frequency adjustment method, where the method is performed by a base station, and the method includes:
acquiring a first carrier deviation, wherein the first carrier deviation is used for indicating the deviation between the local carrier frequency of the base station and the carrier frequency of a signal sent by a first terminal and received by the base station;
carrying the first carrier deviation in Media Access Control (MAC) signaling;
and sending the MAC signaling to the first terminal, so that the first terminal calculates the Doppler frequency shift of the first terminal relative to the base station according to the first carrier deviation carried in the MAC signaling.
In another aspect, an embodiment of the present application provides a frequency adjustment apparatus, where the apparatus is used in a terminal, and the apparatus includes:
a first obtaining module, configured to obtain a first carrier offset, where the first carrier offset is used to indicate an offset between a local carrier frequency of a base station and a carrier frequency of a signal received by the base station and sent by the terminal;
a second obtaining module, configured to obtain a second carrier offset, where the second carrier offset is used to indicate a difference between a local carrier frequency of the terminal and a carrier frequency of a signal received by the terminal and sent by the base station;
a doppler shift calculation module, configured to calculate a doppler shift of the terminal relative to the base station according to the first carrier offset and the second carrier offset;
and the frequency adjusting module is used for adjusting the frequency of the signals which are subsequently received and sent by the base station according to the Doppler frequency shift.
In another aspect, an embodiment of the present application provides a frequency adjustment apparatus, where the apparatus is used in a base station, and the apparatus includes:
a third obtaining module, configured to obtain a first carrier offset, where the first carrier offset is used to indicate a deviation between a local carrier frequency of the base station and a carrier frequency of a signal received by the base station and sent by a first terminal;
an adding module, configured to carry the first carrier offset in a MAC signaling of a media access control layer;
a signaling sending module, configured to send the MAC signaling to the first terminal, so that the first terminal calculates a doppler shift of the first terminal relative to the base station according to the first carrier offset carried in the MAC signaling.
In another aspect, an embodiment of the present application provides a computer device, which includes a processor and a memory, where at least one instruction, at least one program, a code set, or a set of instructions is stored in the memory, and the at least one instruction, the at least one program, the code set, or the set of instructions is loaded and executed by the processor to implement the frequency adjustment method according to the above aspect.
In another aspect, an embodiment of the present application provides a computer-readable storage medium, in which at least one instruction, at least one program, a code set, or a set of instructions is stored, and the at least one instruction, the at least one program, the code set, or the set of instructions is loaded and executed by a processor to implement the frequency adjustment method according to the above aspect.
In another aspect, embodiments of the present application provide a computer program product including computer instructions, which are stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and executes the computer instructions to cause the computer device to execute the frequency adjustment method provided by the above-mentioned aspect.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the method and the device have the advantages that the terminal can acquire the Doppler frequency shift between the terminal and the base station caused by the movement of the terminal, the carrier frequency of the downlink signal received by the terminal is adjusted according to the Doppler frequency shift, the inaccuracy of timing caused by the fact that the terminal directly adjusts the carrier frequency of the downlink signal according to the deviation between the carrier frequency of the terminal and the carrier frequency of the signal sent by the base station or directly adjusts the reference frequency of the crystal oscillator is avoided, and the accuracy of time-frequency synchronization between the terminal and the base station is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wireless communication system according to an exemplary embodiment of the present application;
fig. 2 is a schematic diagram of generation of internal carrier frequencies and clock frequencies of a terminal according to an exemplary embodiment of the present application;
fig. 3 is a flowchart of a method for adjusting a frequency according to an exemplary embodiment of the present application;
fig. 4 is a flowchart of a method for adjusting a frequency according to an exemplary embodiment of the present application;
fig. 5 is a flowchart of a method for adjusting a frequency according to an exemplary embodiment of the present application;
FIG. 6 is a schematic diagram of a handset configuration according to an exemplary embodiment of the present application;
fig. 7 is a flowchart of a method for adjusting a frequency according to an exemplary embodiment of the present application;
fig. 8 is a block diagram of a frequency adjustment apparatus according to an exemplary embodiment of the present application;
fig. 9 is a block diagram of a frequency adjustment apparatus according to an exemplary embodiment of the present application;
FIG. 10 is a schematic block diagram of a computer device according to an exemplary embodiment of the present application;
fig. 11 is a schematic structural diagram of a base station according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
The scheme provided by the application can be used in a real scene that the control terminal adjusts the frequency and keeps time-frequency synchronization with the base station when people use the terminal with the data transmission function in daily life, and for the convenience of understanding, the structure of the communication scene related to the embodiment of the application is firstly simply introduced below.
Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an exemplary embodiment of the present application is shown. As shown in fig. 1, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: several terminals 110 and base stations 120.
Terminal 110 may refer to, among other things, a device that provides voice and/or data connectivity to a user. The terminal 110 may communicate with one or more core networks via a Radio Access Network (RAN), and the terminal 110 may be an internet of things terminal, such as a sensor device, a mobile phone (or referred to as a "cellular" phone), and a computer having the internet of things terminal, and may be a fixed, portable, pocket, handheld, computer-included, or vehicle-mounted device, for example. For example, a Station (STA), a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access point, a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Equipment (User Terminal), a User Agent (User Agent), a User Equipment (User Device), or a User Terminal (UE). Alternatively, the terminal 110 may be a device of an unmanned aerial vehicle, a vehicle-mounted device, or the like.
The base station 120 may be a network device in a wireless communication system. The wireless communication system may also be a 5G system, which is also called a New Radio (NR) system. Alternatively, the wireless communication system may be a next-generation system of a 5G system.
Optionally, the base station 120 may be a base station (gNB) adopting a centralized distributed architecture in the 5G system. When the base station 120 employs a centralized Distributed architecture, it typically includes a Central Unit (CU) and at least two Distributed Units (DU). A Packet Data Convergence Protocol (PDCP) layer, a Radio Link layer Control Protocol (RLC) layer, and a Media Access Control (MAC) layer are provided in the central unit; a Physical (PHY) layer protocol stack is disposed in the distribution unit, and the embodiment of the present application does not limit the specific implementation manner of the base station 120.
The base station 120 and the terminal 110 may establish a radio connection over a radio air interface. In different embodiments, the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G next generation mobile communication network technology standard.
Optionally, the wireless communication system may further include a network management device 130.
The base stations 120 may be respectively connected to the network management apparatus 130. The network Management device 130 may be a Core network device in a wireless communication system, for example, the network Management device 130 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the Network management device may also be other core Network devices, such as a Serving Gateway (SGW), a Public Data Network gateway (PGW), a Policy and Charging Rules Function (PCRF), a Home Subscriber Server (HSS), or the like. The embodiment of the present application is not limited to the implementation form of the network management device 130.
For the terminal in fig. 1, it may receive a downlink signal from the base station, and may also send an uplink signal to the base station, where the frequencies used by each module in the terminal are multiplied by the reference frequency of the same crystal oscillator, and after the terminal calculates the deviation between its carrier frequency and the carrier frequency of the received downlink signal, the reference frequency of the crystal oscillator in the terminal may be calibrated through a corresponding feedback mechanism, so as to adjust the carrier frequency and the clock frequency, and implement time-frequency synchronization between the terminal and the base station.
Referring to fig. 2, a schematic diagram of generating a terminal internal carrier frequency and a clock frequency according to an exemplary embodiment of the present application is shown. As shown in fig. 2, the crystal oscillator module 200 performs frequency multiplication adjustment based on its own reference frequency Fbase to obtain a reference frequency at which the clock frequency Fclock is M times and a reference frequency at which the carrier frequency Fcarrier is N times. Where M and N may be any positive number. As can be seen from fig. 2, the clock frequency and the carrier frequency of the terminal are multiplied based on the reference frequency of the same crystal oscillator, and after the terminal calculates the carrier frequency deviation between the carrier frequency of the terminal itself and the carrier frequency of the downlink signal of the base station, the reference frequency of the crystal oscillator module 200 may be calibrated or adjusted through a feedback mechanism, so as to adjust the clock frequency and the carrier frequency, and implement time-frequency synchronization between the terminal and the base station.
However, the terminal includes a doppler shift in the carrier frequency deviation between its own carrier frequency and the carrier frequency of the downlink signal of the base station, that is, the carrier frequency deviation between the carrier frequency of the terminal itself and the carrier frequency of the downlink signal of the base station includes the carrier frequency deviation caused by the movement of the terminal in addition to the carrier frequency deviation between the terminal itself and the base station, in practical application, the terminal cannot actively distinguish the two carrier frequency deviations, and will directly use the carrier frequency deviation between the carrier frequency of the terminal and the carrier frequency of the downlink signal of the base station as the carrier frequency deviation between the terminal and the base station, and adjust the reference frequency of the crystal oscillator, and further adjust the carrier frequency and the clock frequency, because of the Doppler frequency shift, timing drift can be generated when the carrier frequency is adjusted, and the accuracy of time frequency synchronization adjustment between the terminal and the base station is reduced.
In order to maintain the accuracy of time-frequency synchronization between the terminal and the base station, and to expand the way of performing time-frequency synchronization in the control terminal, the present application provides a solution, please refer to fig. 3, which shows a flowchart of a method for adjusting frequency according to an exemplary embodiment of the present application. The method can be applied to the terminal with the frequency adjustment function shown in fig. 1. As shown in fig. 3, the frequency adjustment method may include the following steps:
Optionally, in this application, the base station may calculate a difference between a carrier frequency of the received uplink signal sent by the terminal and a local carrier frequency of the base station, where the difference is the first carrier offset. The terminal may obtain the first carrier offset through an instruction carrying the first carrier offset issued by the base station, or the terminal may also actively send a request instruction to the base station and receive the first carrier offset returned by the base station in response to the request instruction. Wherein the request instruction is used for acquiring a first carrier offset.
Alternatively, the terminal may calculate the carrier frequency deviation between itself and the base station according to the local carrier frequency and the carrier frequency of the received signal transmitted by the base station.
In the application, the terminal may establish an equation including the doppler shift and the actual carrier offset according to the obtained first carrier offset and the obtained second carrier offset, so as to obtain the doppler shift of the terminal relative to the base station.
And step 304, according to the Doppler frequency shift, adjusting the frequency of the signal which is subsequently received and sent by the base station.
Optionally, in the present application, the doppler shift is used to adjust the carrier frequency of the signal transmitted to the received base station, so that the difference between the carrier frequency of the signal transmitted by the subsequently received base station and the local carrier frequency of the subsequently received base station is smaller.
In summary, the present application enables the terminal to obtain the doppler shift existing between the terminal and the base station due to the movement of the terminal, and adjust the carrier frequency of the downlink signal received by the terminal according to the doppler shift, thereby avoiding the inaccuracy of timing caused by the terminal directly adjusting the carrier frequency of the downlink signal according to the deviation between the carrier frequency of the terminal and the carrier frequency of the signal sent by the base station or directly adjusting the reference frequency of the crystal oscillator, and improving the accuracy of maintaining time-frequency synchronization between the terminal and the base station.
In order to maintain the accuracy of time-frequency synchronization between the terminal and the base station, and to expand the way of performing time-frequency synchronization in the control terminal, the present application provides a solution, please refer to fig. 4, which shows a flowchart of a method for adjusting frequency according to an exemplary embodiment of the present application. The method may be applied to the base station shown in fig. 1 and described above, and is performed by the base station. As shown in fig. 4, the frequency adjustment method may include the following steps:
Alternatively, the first terminal may be a terminal that establishes a communication connection with the base station, for example, the terminal in the embodiment of fig. 3 described above.
In summary, the present application enables the terminal to obtain the doppler shift existing between the terminal and the base station due to the movement of the terminal, and adjust the carrier frequency of the downlink signal received by the terminal according to the doppler shift, thereby avoiding the inaccuracy of timing caused by the terminal directly adjusting the carrier frequency of the downlink signal according to the deviation between the carrier frequency of the terminal and the carrier frequency of the signal sent by the base station or directly adjusting the reference frequency of the crystal oscillator, and improving the accuracy of maintaining time-frequency synchronization between the terminal and the base station.
In a possible implementation manner, the terminal may further calculate an actual carrier offset of the terminal with respect to the base station according to the first carrier offset and the second carrier offset, and adjust a reference frequency of a crystal oscillator in the terminal according to the actual carrier offset. The scheme shown in fig. 3 is described by way of example, in which the terminal not only adjusts the carrier frequency through doppler shift, but also adjusts the reference frequency of the terminal through an actual carrier.
Referring to fig. 5, a flowchart of a method for adjusting a frequency according to an exemplary embodiment of the present application is shown. The method can be applied to the terminal with the frequency adjustment function shown in fig. 1. As shown in fig. 5, the frequency adjustment method may include the following steps:
The first carrier offset is used for indicating the offset between the local carrier frequency of the base station and the carrier frequency of the signal transmitted by the terminal received by the base station.
Optionally, in this application, the base station may calculate a difference between a carrier frequency of the received uplink signal sent by the terminal and a local carrier frequency of the base station itself, and send a target signaling carrying the first carrier offset based on a Medium Access Control (MAC) layer, so as to notify the terminal of the first carrier offset calculated by the base station itself. For example, the base station may carry the first carrier offset through a MAC CE (Control Element), which may incorporate a MAC PDU (Protocol Data Unit) and send the first carrier offset to the terminal through a PDSCH (Physical Downlink Shared Channel) Channel. The transmission process and the period may refer to a transmission mode of a TA (Transmitter Address) command between the base station and the terminal, and are not described herein again.
Optionally, the terminal may analyze the received target signaling, and obtain the first carrier offset from the target signaling.
In a possible implementation manner, the terminal may calculate the second carrier offset according to the received signal sent by the base station, that is, obtain the carrier frequency of the terminal according to the reference frequency of the crystal oscillator in the terminal; acquiring the carrier frequency of a downlink signal according to a received signal sent by a base station; and acquiring a second carrier deviation according to the carrier frequency of the terminal and the carrier frequency of the downlink signal.
For example, after the terminal receives the signal sent by the base station, the terminal may calculate its own carrier frequency (i.e., local carrier frequency) when receiving the downlink signal according to the reference frequency of its own crystal oscillator, and subtract the local carrier frequency from the carrier frequency of the received downlink signal to obtain the second carrier offset. For example, if the terminal may generate a carrier frequency of 5kHz (kilohertz) according to the reference frequency of its own crystal oscillator and the carrier frequency of the downlink signal is 3kHz, the terminal may obtain the second carrier offset as 2 kHz. If the carrier frequency generated by the reference frequency of the crystal oscillator of the terminal is 3kHz and the carrier frequency of the downlink signal is 5kHz, the terminal can obtain the second carrier deviation as-2 kHz.
Step 504, calculating the doppler shift of the terminal relative to the base station according to the first carrier deviation and the second carrier deviation.
The terminal may calculate the doppler shift of the terminal relative to the base station according to the formula [ 1 ] according to the first carrier offset and the second carrier offset. The formula [ 1 ] is as follows:
FDopp＝(EB+EA)/2 【1】
wherein, FDoppIndicating the Doppler shift of the terminal relative to the base station, EBDenotes a second carrier deviation, EAIndicating a first carrier offset. E.g. end-derived EBIs 3kHz, EAAt 2kHz, a doppler shift of 2.5kHz can be obtained by the above equation [ 1 ].
And 505, according to the doppler shift, performing frequency adjustment on a signal subsequently received and transmitted by the base station.
Optionally, the terminal adjusts the carrier frequency of the subsequently received downlink signal according to the calculated doppler shift, so that the difference between the carrier frequency of the subsequently received signal sent by the base station and the local carrier frequency of the terminal is smaller, even 0.
The terminal may calculate an actual carrier offset of the terminal relative to the base station according to a formula [ 2 ] according to the first carrier offset and the second carrier offset. Equation [ 2 ] is as follows:
FErr＝(EB-EA)/2 【2】
wherein, FErrIndicating the Doppler shift of the terminal relative to the base station, EBDenotes a second carrier deviation, EAIndicating a first carrier offset. E.g. end-derived EBIs 3kHz, EAAt 2kHz, then an actual carrier offset of 0.5kHz can be obtained by the above equation [ 2 ].
In one possible implementation, the above equations [ 1 ] and [ 2 ] can be obtained by establishing an equation system containing the doppler shift and the actual carrier offset, for example, for the first carrier offset, it has the following calculation formula: eA＝-FErr+FDopp(ii) a For the second carrier offset, it has the following calculation formula: eB＝FErr+FDopp(ii) a ThenThe terminal may establish an equation set for the calculation formulas of the first carrier deviation and the second carrier deviation, and perform solution to obtain the formulas (1) and (2), so as to calculate the actual carrier deviation and the doppler frequency shift through the formulas (1) and (2) in the following process.
And step 507, adjusting the crystal oscillator of the terminal according to the actual carrier deviation.
Optionally, the terminal may adjust the reference frequency of the crystal oscillator in the terminal according to the actual carrier deviation obtained by the calculation, so as to adjust the clock frequency, so that the clock frequency of the terminal is closer to the clock frequency of the base station.
In summary, the present application enables the terminal to obtain the doppler shift existing between the terminal and the base station due to the movement of the terminal, and adjust the carrier frequency of the downlink signal received by the terminal according to the doppler shift, thereby avoiding the inaccuracy of timing caused by the terminal directly adjusting the carrier frequency of the downlink signal according to the deviation between the carrier frequency of the terminal and the carrier frequency of the signal sent by the base station or directly adjusting the reference frequency of the crystal oscillator, and improving the accuracy of maintaining time-frequency synchronization between the terminal and the base station.
In addition, the actual carrier deviation of the terminal relative to the base station can be calculated according to the acquired first carrier deviation and the acquired second carrier deviation, and the crystal oscillator of the terminal is adjusted according to the actual carrier deviation, so that the accuracy of the terminal in adjusting the reference frequency of the crystal oscillator is improved.
In a possible implementation manner, the terminal may further establish a communication connection with a plurality of base stations, and the terminal may transmit an uplink signal to each base station that establishes the communication connection, and may also receive a signal transmitted by each base station. In this case, the terminal may further calculate an actual carrier deviation of the terminal with respect to each of the at least two base stations, and obtain a carrier deviation combination value according to the actual carrier deviation of the terminal with respect to each of the at least two base stations; and adjusting the reference frequency of a crystal oscillator in the terminal according to the carrier deviation combination value.
In a possible implementation manner, an average value of actual carrier deviations of the terminal relative to the at least two base stations is obtained according to the actual carrier deviations of the terminal relative to the at least two base stations; the average value is obtained as a carrier deviation combined value.
In a possible implementation manner, acquiring signal-to-noise ratios of respective downlink signals of at least two base stations;
and calculating a carrier deviation combination value according to the actual carrier deviation of the terminal relative to the at least two base stations and the signal-to-noise ratio of the downlink signals of the at least two base stations in a maximum ratio combination mode.
That is, when a terminal communicates with a plurality of base stations at the same time, it can be determined according to each F between itself and the plurality of base stationsErrCalculating carrier deviation combined value F'ErrCarrier offset combined value F'ErrBy respective F between the terminal itself and a plurality of base stationsErrThe average value is calculated, and may also be obtained by maximum ratio combining according to the signal-to-noise ratio of each base station signal, which is not limited in this application. Optionally, the obtained carrier deviation combined value F'ErrThe method can be used for adjusting the reference frequency of the terminal crystal oscillator; doppler shift and residual actual carrier deviation value F of terminal relative to each base stationEr-F’ErrThe method can be used for correcting the carrier frequency of the downlink signal of each base station.
In a possible implementation manner, taking the terminal as a mobile phone, and the mobile phone communicates with a single base station as an example, the processing flow of the doppler shift and the actual carrier offset of the mobile phone with respect to the base station in the mobile phone in the present application may be as shown in the following diagram. Please refer to fig. 6, which shows a schematic structural diagram of a mobile phone according to an exemplary embodiment of the present application. As shown in fig. 6, the apparatus includes a crystal module 601, a radio frequency module 602, a frequency offset separation module 603, a baseband module 604, and an adjustment module 605.
The crystal oscillator module 601 is configured to provide a reference frequency to each module, the radio frequency module 602 is configured to receive a signal sent by a base station, and the frequency offset separation module 603 is configured to obtain a first carrier offset E according to the obtained first carrier offset EAAnd a second carrier offset EBCalculating to obtain Doppler frequency shift FDoppAnd the actual carrier deviation FErrAnd transmits the calculated doppler shift to the adjustment module 605 to adjust the carrier frequency of the received downlink signal, and the frequency offset separation module 603 may also transmit the calculated actual carrier offset to the crystal oscillator module 601 to adjust the reference frequency, thereby changing the clock frequency provided by the crystal oscillator module 601 to the baseband processor and the carrier frequency provided by the radio frequency module 602.
In a possible implementation manner, the terminal may also actively send a target request to the base station, and instruct the base station to send the MAC signaling to itself through the target request. The embodiments shown in fig. 3, 4 and 5 are described below by way of example with respect to interaction between a terminal and a base station.
Referring to fig. 7, a method flow chart of a frequency adjustment method according to an exemplary embodiment of the present application is shown. The method can be applied to the system of the terminal and the base station shown in fig. 1, and is executed by the terminal and the base station in the system. As shown in fig. 7, the frequency adjustment method may include the following steps:
step 701, the first terminal sends a target request to the base station in response to that the current carrier deviation is greater than a deviation threshold, the current carrier deviation is used for indicating the deviation between the current local carrier frequency of the first terminal and the carrier frequency of a signal received by the first terminal and sent by the base station, and the target request is used for indicating the base station to send an MAC signaling.
That is, the first terminal may compare the current acquired carrier offset with the offset threshold, and if the current carrier offset is greater than the offset threshold, it indicates that the offset between the local carrier frequency of the first terminal itself and the carrier frequency of the signal sent by the base station is too large, and needs to be adjusted, so the first terminal may send a target request to the base station. Alternatively, the deviation threshold may be set in the first terminal by a developer in advance. For example, if the magnitude of the deviation threshold is 200kHz, the first terminal may send a target request to the base station if it calculates that the deviation between the carrier frequency of itself at this time and the carrier frequency of the signal sent by the base station is 205 kHz.
In a possible implementation manner, the first terminal may further send the target request to the base station according to a preset period. That is, the first terminal actively sends the target request to the base station after a period of time. Optionally, the preset period may also be set in the first terminal by a developer, or the preset period may be sent to the terminal by the base station. For example, the time of the preset period is 3 minutes, and then the first terminal may send the target request to the base station every 3 minutes.
In a possible implementation manner, the base station may further include a first timer, and in response to that a time variation of the first timer is equal to a period duration of a preset period, the base station may execute the step of acquiring the first carrier offset, that is, the base station may start timing after sending an MAC signaling carrying the first carrier offset information once, and when the time variation of the first timer is equal to the period duration of the preset period, acquire the first carrier offset at this time according to the above step again, and re-carry the first carrier offset in the MAC signaling, thereby sending the first carrier offset to the terminal. For example, the time of the preset period is 3 minutes, which corresponds to that the base station may actively send the MAC signaling containing the first carrier offset to the first terminal every three minutes. The preset period may be sent to the base station by the terminal, or the preset period is preset in the base station.
In step 702, the base station receives a target request sent by the first terminal.
In step 703, the base station obtains a first carrier offset, where the first carrier offset is used to indicate a difference between a local carrier frequency of the base station and a carrier frequency of a signal received by the base station and sent by the first terminal.
In step 704, the base station carries the first carrier offset in the MAC signaling.
Step 705, the base station sends MAC signaling to the first terminal.
And the first terminal calculates the Doppler frequency shift of the first terminal relative to the base station according to the first carrier deviation carried in the MAC signaling.
Step 706, the first terminal receives a MAC signaling of a media access control layer sent by the base station.
Step 707, the first terminal parses the MAC signaling to obtain the first carrier offset.
In step 708, the first terminal obtains a second carrier offset, where the second carrier offset is used to indicate a difference between a carrier frequency of the first terminal and a carrier frequency of a signal received by the first terminal from the base station.
In step 709, the first terminal calculates a doppler shift and an actual carrier offset of the first terminal relative to the base station according to the first carrier offset and the second carrier offset.
Step 710, the first terminal adjusts the frequency of the signal subsequently received and sent by the base station according to the doppler shift, and adjusts the crystal oscillator of the first terminal according to the actual carrier offset.
Optionally, the execution manner of step 706 to step 710 may be according to the description in step 501 to step 507 in the embodiment shown in fig. 5, which is not described herein again.
In summary, the present application enables the terminal to obtain the doppler shift existing between the terminal and the base station due to the movement of the terminal, and adjust the carrier frequency of the downlink signal received by the terminal according to the doppler shift, thereby avoiding the inaccuracy of timing caused by the terminal directly adjusting the carrier frequency of the downlink signal according to the deviation between the carrier frequency of the terminal and the carrier frequency of the signal sent by the base station or directly adjusting the reference frequency of the crystal oscillator, and improving the accuracy of maintaining time-frequency synchronization between the terminal and the base station.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Referring to fig. 8, a block diagram of a frequency adjustment apparatus according to an exemplary embodiment of the present application is shown. The frequency adjustment apparatus 800 may be used in a terminal to perform all or part of the steps performed by the terminal in the methods provided by the embodiments shown in fig. 3, fig. 5 and fig. 7. The frequency adjustment apparatus 800 may include: a first obtaining module 801, a second obtaining module 802, a doppler shift calculating module 803, and a frequency adjusting module 804.
A first obtaining module 801, configured to obtain a first carrier offset, where the first carrier offset is used to indicate a deviation between a local carrier frequency of a base station and a carrier frequency of a signal received by the base station and sent by the terminal;
a second obtaining module 802, configured to obtain a second carrier offset, where the second carrier offset is used to indicate a deviation between a local carrier frequency of the terminal and a carrier frequency of a signal received by the terminal and sent by the base station;
a doppler shift calculation module 803, configured to calculate a doppler shift of the terminal with respect to the base station according to the first carrier offset and the second carrier offset;
a frequency adjusting module 804, configured to perform frequency adjustment on a signal subsequently received and sent by the base station according to the doppler shift.
In summary, the present application enables the terminal to obtain the doppler shift existing between the terminal and the base station due to the movement of the terminal, and adjust the carrier frequency of the downlink signal received by the terminal according to the doppler shift, thereby avoiding the inaccuracy of timing caused by the terminal directly adjusting the carrier frequency of the downlink signal according to the deviation between the carrier frequency of the terminal and the carrier frequency of the signal sent by the base station or directly adjusting the reference frequency of the crystal oscillator, and improving the accuracy of maintaining time-frequency synchronization between the terminal and the base station.
Optionally, the first obtaining module 801 includes: a first receiving unit and a first obtaining unit;
the first receiving unit is configured to receive a media access control MAC signaling sent by a base station, where the MAC signaling includes the first carrier offset observed by the base station;
the first obtaining unit is configured to analyze the MAC signaling to obtain the first carrier offset.
Optionally, the apparatus further comprises: a first sending module or a second sending module;
the first sending module is configured to send a target request to the base station in response to that a current carrier offset is greater than a offset threshold before the first receiving unit receives a MAC signaling of a media access control layer sent by the base station, where the current carrier offset is used to indicate a difference between a current carrier frequency local to the terminal and a carrier frequency of a signal sent by the base station and received by the terminal, and the target request is used to indicate the base station to send the MAC signaling;
the second sending module is configured to send the target request to the base station according to a preset period, where the preset period is sent to the terminal by the base station, or the preset period is preset in the terminal.
Optionally, the apparatus further comprises:
an actual deviation calculation module, configured to calculate an actual carrier deviation of the terminal relative to the base station according to the first carrier deviation and the second carrier deviation;
and the reference frequency adjusting module is used for adjusting the reference frequency of the crystal oscillator in the terminal according to the actual carrier deviation.
Optionally, the terminal establishes communication connections with at least two base stations, and the apparatus further includes:
a first calculating module, configured to calculate actual carrier deviations of the terminal with respect to the at least two base stations, respectively;
a first obtaining module, configured to obtain a carrier deviation combination value according to an actual carrier deviation of the terminal with respect to each of the at least two base stations;
and the reference frequency adjusting module is used for adjusting the reference frequency of the crystal oscillator in the terminal according to the carrier deviation combination value.
Optionally, the first obtaining module includes: a second acquisition unit and a third acquisition unit;
the second obtaining unit is configured to obtain an average value of actual carrier deviations of the terminal with respect to the at least two base stations according to the actual carrier deviations of the terminal with respect to the at least two base stations;
the third obtaining unit is configured to obtain the average value as the combined carrier deviation value.
Optionally, the first obtaining module includes: a fourth acquiring unit and a first calculating unit;
the fourth obtaining unit is configured to obtain signal-to-noise ratios of respective downlink signals of the at least two base stations;
the first calculating unit is configured to calculate the carrier offset combination value according to a maximum ratio combination manner according to the actual carrier offset of the terminal with respect to each of the at least two base stations and the signal-to-noise ratio of the downlink signal of each of the at least two base stations.
Optionally, the second obtaining module 802 is configured to calculate the second carrier offset according to the received signal sent by the base station.
Referring to fig. 9, a block diagram of a frequency adjustment apparatus according to an exemplary embodiment of the present application is shown. The frequency adjustment apparatus 900 may be used in a terminal to perform all or part of the steps performed by a base station in the methods provided by the embodiments shown in fig. 4, fig. 5 and fig. 7. The frequency adjusting apparatus 900 may include: a third obtaining module 901, an adding module 902 and a signaling sending module 903.
The third obtaining module 901 is configured to obtain a first carrier offset, where the first carrier offset is used to indicate a deviation between a local carrier frequency of the base station and a carrier frequency of a signal received by the base station and sent by a first terminal;
the adding module 902 is configured to carry the first carrier offset in a MAC signaling of a media access control layer;
the signaling sending module 903 is configured to send the MAC signaling to the first terminal, so that the first terminal calculates a doppler shift of the first terminal relative to the base station according to the first carrier offset carried in the MAC signaling.
Optionally, the apparatus further comprises:
a request receiving module, configured to receive a target request sent by the first terminal before the signaling sending module 903 sends the target signaling to the first terminal, where the target request is used to instruct the base station to send the MAC signaling.
Optionally, the base station includes a first timer, and the third obtaining module 901 is configured to execute the step of obtaining the first carrier offset in response to that a time variation of the first timer is equal to a period duration of a preset period, where the preset period is sent to the base station by a terminal, or the preset period is preset in the base station.
Referring to fig. 10, a schematic structural diagram of a computer device according to an exemplary embodiment of the present application is shown. The computer device 1000 may include: a processor 1001, a receiver 1002, a transmitter 1003, a memory 1004, and a bus 1005.
The processor 1001 includes one or more processing cores, and the processor 1001 executes various functional applications and information processing by running software programs and modules.
The receiver 1002 and the transmitter 1003 may be implemented as one communication component, which may be a piece of communication chip. The communication chip may also be referred to as a transceiver.
The memory 1004 is connected to the processor 1001 through a bus 1005.
The memory 1004 may be used for storing a computer program, which the processor 1001 is configured to execute in order to implement the respective steps performed by the computer device in the above-described method embodiments.
Further, the memory 1004 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, Electrically Erasable Programmable Read-Only memories (EEPROMs), Erasable Programmable Read-Only memories (EPROMs), Static Random Access Memories (SRAMs), Read-Only memories (ROMs), magnetic memories, flash memories, Programmable Read-Only memories (PROMs).
In an exemplary embodiment, the computer device includes a processor and a memory;
the processor is configured to perform at least one of,
acquiring a first carrier deviation, wherein the first carrier deviation is used for indicating the deviation between the local carrier frequency of a base station and the carrier frequency of a signal sent by the terminal received by the base station;
acquiring a second carrier deviation, wherein the second carrier deviation is used for indicating the deviation between the local carrier frequency of the terminal and the carrier frequency of the signal sent by the base station and received by the terminal;
calculating the Doppler frequency shift of the terminal relative to the base station according to the first carrier deviation and the second carrier deviation;
and adjusting the frequency of the signals sent by the base station and received subsequently according to the Doppler frequency shift.
In one possible implementation, the processor is configured to,
receiving a Media Access Control (MAC) signaling sent by a base station, wherein the MAC signaling comprises the first carrier deviation observed by the base station;
and analyzing the MAC signaling to obtain the first carrier deviation.
In one possible implementation, the processor is further configured to,
before receiving Media Access Control (MAC) signaling sent by a base station, responding to a current carrier deviation larger than a deviation threshold value, and sending a target request to the base station, wherein the current carrier deviation is used for indicating the deviation between the current local carrier frequency of the terminal and the carrier frequency of a signal sent by the base station and received by the terminal, and the target request is used for indicating the base station to send the MAC signaling; alternatively, the first and second electrodes may be,
and sending the target request to the base station according to a preset period, wherein the preset period is sent to the terminal by the base station, or the preset period is preset in the terminal.
In one possible implementation, the processor is further configured to,
calculating the actual carrier deviation of the terminal relative to the base station according to the first carrier deviation and the second carrier deviation;
and adjusting the reference frequency of a crystal oscillator in the terminal according to the actual carrier deviation.
In one possible implementation, the processor is further configured to,
calculating the actual carrier deviation of the terminal relative to the at least two base stations;
acquiring a carrier deviation combination value according to the actual carrier deviation of the terminal relative to the at least two base stations;
the adjusting the reference frequency of the crystal oscillator in the terminal according to the actual carrier deviation includes:
and adjusting the reference frequency of the crystal oscillator in the terminal according to the carrier deviation combination value.
In one possible implementation, the processor is configured to,
acquiring an average value of actual carrier deviations of the terminal relative to the at least two base stations according to the actual carrier deviations of the terminal relative to the at least two base stations;
and acquiring the average value as the carrier deviation combination value.
In one possible implementation, the processor is configured to,
acquiring the signal-to-noise ratio of respective downlink signals of the at least two base stations;
and calculating the carrier deviation combination value according to the actual carrier deviation of the terminal relative to the at least two base stations and the signal-to-noise ratio of the downlink signals of the at least two base stations in a maximum ratio combination mode.
In one possible implementation, the processor is configured to,
and calculating the second carrier deviation according to the received signal sent by the base station.
Please refer to fig. 11, which illustrates a schematic structural diagram of a base station according to an exemplary embodiment of the present application. The base station 1100 may include: a processor 1101, a receiver 1102, a transmitter 1103, a memory 1104, and a bus 1105.
The processor 1101 includes one or more processing cores, and the processor 1101 executes various functional applications and information processing by running software programs and modules.
The receiver 1102 and the transmitter 1103 may be implemented as one communication component, which may be one communication chip. The communication chip may also be referred to as a transceiver.
The memory 1104 is coupled to the processor 1101 by a bus 1105.
The memory 1104 may be used for storing a computer program, which the processor 1101 is used for executing in order to implement the various steps performed by the base station in the above-described method embodiments.
Further, memory 1104 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, Electrically Erasable Programmable Read-Only memories (EEPROMs), Erasable Programmable Read-Only memories (EPROMs), Static Random Access Memories (SRAMs), Read-Only memories (ROMs), magnetic memories, flash memories, Programmable Read-Only memories (PROMs).
In an exemplary embodiment, the base station includes a processor and a memory;
the processor is configured to perform at least one of,
acquiring a first carrier deviation, wherein the first carrier deviation is used for indicating the deviation between the local carrier frequency of the base station and the carrier frequency of a signal sent by a first terminal and received by the base station;
carrying the first carrier deviation in Media Access Control (MAC) signaling;
and sending the MAC signaling to the first terminal, so that the first terminal calculates the Doppler frequency shift of the first terminal relative to the base station according to the first carrier deviation carried in the MAC signaling.
Optionally, the processor is further configured to receive a target request sent by the first terminal before sending the target signaling to the first terminal, where the target request is used to instruct the base station to send the MAC signaling.
Optionally, the base station includes a first timer, and the processor is configured to execute the step of obtaining the first carrier offset in response to that a time variation of the first timer is equal to a period duration of a preset period, where the preset period is sent to the base station by a terminal, or the preset period is preset in the base station.
The present invention also provides a computer-readable medium, where at least one instruction is stored, and the at least one instruction is loaded and executed by the processor to implement all or part of the steps performed by the terminal or the base station in the frequency adjustment method according to the foregoing embodiments.
Embodiments of the present application also provide a computer program product including computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the frequency adjustment method provided in the various alternative implementations of the various embodiments described above.
It should be noted that: in the frequency adjustment apparatus provided in the foregoing embodiment, when the frequency adjustment method is executed, only the foregoing embodiments are illustrated, and in an actual program, the functions may be distributed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided by the above embodiments belong to the same concept, and specific implementation processes thereof are described in the method embodiments for details, which are not described herein again.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (17)
1. A method for frequency adjustment, the method being performed by a terminal, the method comprising:
acquiring a first carrier deviation, wherein the first carrier deviation is used for indicating the deviation between the local carrier frequency of a base station and the carrier frequency of a signal sent by the terminal received by the base station;
acquiring a second carrier deviation, wherein the second carrier deviation is used for indicating the deviation between the local carrier frequency of the terminal and the carrier frequency of the signal sent by the base station and received by the terminal;
calculating the Doppler frequency shift of the terminal relative to the base station according to the first carrier deviation and the second carrier deviation;
and according to the Doppler frequency shift, carrying out frequency adjustment on the signals which are subsequently received and sent by the base station.
2. The method of claim 1, wherein obtaining the first carrier offset comprises:
receiving a Media Access Control (MAC) signaling sent by a base station, wherein the MAC signaling comprises the first carrier deviation observed by the base station;
and analyzing the MAC signaling to obtain the first carrier deviation.
3. The method of claim 2, wherein before the receiving the MAC signaling sent by the base station, further comprising:
responding to a current carrier deviation larger than a deviation threshold value, and sending a target request to the base station, wherein the current carrier deviation is used for indicating the deviation between the current carrier frequency local to the terminal and the carrier frequency of a signal sent by the base station and received by the terminal, and the target request is used for indicating the base station to send the MAC signaling; alternatively, the first and second electrodes may be,
and sending the target request to the base station according to a preset period, wherein the preset period is sent to the terminal by the base station, or the preset period is preset in the terminal.
4. The method of claim 1, further comprising:
calculating the actual carrier deviation of the terminal relative to the base station according to the first carrier deviation and the second carrier deviation;
and adjusting the crystal oscillator of the terminal according to the actual carrier deviation.
5. The method of claim 4, wherein the terminal establishes communication connections with at least two base stations, and wherein the method further comprises:
calculating the actual carrier deviation of the terminal relative to the at least two base stations;
acquiring a carrier deviation combination value according to the actual carrier deviation of the terminal relative to the at least two base stations;
the adjusting the crystal oscillator of the terminal according to the actual carrier deviation includes:
and adjusting the crystal oscillator of the terminal according to the carrier deviation combination value.
6. The method according to claim 5, wherein the obtaining a carrier offset combination value according to the actual carrier offsets of the terminal relative to the at least two base stations comprises:
acquiring an average value of actual carrier deviations of the terminal relative to the at least two base stations according to the actual carrier deviations of the terminal relative to the at least two base stations;
and acquiring the average value as the carrier deviation combination value.
7. The method according to claim 5, wherein the obtaining a carrier offset combination value according to the actual carrier offsets of the terminal relative to the at least two base stations comprises:
acquiring the signal-to-noise ratio of respective downlink signals of the at least two base stations;
and calculating the carrier deviation combination value according to the actual carrier deviation of the terminal relative to the at least two base stations and the signal-to-noise ratio of the downlink signals of the at least two base stations in a maximum ratio combination mode.
8. The method according to any of claims 1 to 4, wherein the obtaining the second carrier offset comprises:
and calculating the second carrier deviation according to the received signal sent by the base station.
9. A method for frequency adjustment, the method being performed by a base station, the method comprising:
acquiring a first carrier deviation, wherein the first carrier deviation is used for indicating the deviation between the local carrier frequency of the base station and the carrier frequency of a signal sent by a first terminal and received by the base station;
carrying the first carrier deviation in Media Access Control (MAC) signaling;
and sending the MAC signaling to the first terminal, so that the first terminal calculates the Doppler frequency shift of the first terminal relative to the base station according to the first carrier deviation carried in the MAC signaling.
10. The method of claim 9, further comprising, prior to sending the target signaling to the first terminal:
and receiving a target request sent by the first terminal, wherein the target request is used for indicating the base station to send the MAC signaling.
11. The method of claim 9, wherein the base station comprises a first timer, and wherein obtaining the first carrier offset comprises:
and in response to that the time variation of the first timer is equal to the period duration of a preset period, executing the step of acquiring the first carrier deviation, where the preset period is sent to the base station by a terminal, or the preset period is preset in the base station.
12. A frequency adjustment apparatus, wherein the apparatus is used in a terminal, the apparatus comprising:
a first obtaining module, configured to obtain a first carrier offset, where the first carrier offset is used to indicate an offset between a local carrier frequency of a base station and a carrier frequency of a signal received by the base station and sent by the terminal;
a second obtaining module, configured to obtain a second carrier offset, where the second carrier offset is used to indicate a difference between a local carrier frequency of the terminal and a carrier frequency of a signal received by the terminal and sent by the base station;
a doppler shift calculation module, configured to calculate a doppler shift of the terminal relative to the base station according to the first carrier offset and the second carrier offset;
and the frequency adjusting module is used for adjusting the frequency of the signals which are subsequently received and sent by the base station according to the Doppler frequency shift.
13. A frequency adjustment apparatus, the apparatus being used in a base station, the apparatus comprising:
a third obtaining module, configured to obtain a first carrier offset, where the first carrier offset is used to indicate a deviation between a local carrier frequency of the base station and a carrier frequency of a signal received by the base station and sent by a first terminal;
an adding module, configured to carry the first carrier offset in a MAC signaling of a media access control layer;
a signaling sending module, configured to send the MAC signaling to the first terminal, so that the first terminal calculates a doppler shift of the first terminal relative to the base station according to the first carrier offset carried in the MAC signaling.
14. A computer device comprising a processor and a memory, the memory having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by the processor to implement the frequency adjustment method of any one of claims 1 to 8.
15. A computer device comprising a processor and a memory, the memory having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by the processor to implement the frequency adjustment method of any one of claims 9 to 11.
16. A computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement the frequency adjustment method of any one of claims 1 to 8.
17. A computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement the frequency adjustment method of any one of claims 9 to 11.
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