CN111224909A - Frequency compensation method, device, user terminal and storage medium - Google Patents

Frequency compensation method, device, user terminal and storage medium Download PDF

Info

Publication number
CN111224909A
CN111224909A CN201911157355.0A CN201911157355A CN111224909A CN 111224909 A CN111224909 A CN 111224909A CN 201911157355 A CN201911157355 A CN 201911157355A CN 111224909 A CN111224909 A CN 111224909A
Authority
CN
China
Prior art keywords
frequency
receiving
transmitting
signal
user terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201911157355.0A
Other languages
Chinese (zh)
Other versions
CN111224909B (en
Inventor
崔超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chen Core Technology Co ltd
Original Assignee
Chen Core Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chen Core Technology Co ltd filed Critical Chen Core Technology Co ltd
Priority to CN201911157355.0A priority Critical patent/CN111224909B/en
Priority claimed from CN201911157355.0A external-priority patent/CN111224909B/en
Publication of CN111224909A publication Critical patent/CN111224909A/en
Application granted granted Critical
Publication of CN111224909B publication Critical patent/CN111224909B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)

Abstract

The embodiment of the invention discloses a frequency compensation method, a frequency compensation device, a user terminal and a storage medium. The method comprises the following steps: receiving a downlink signal sent by a base station through a signal receiving device; acquiring the receiving frequency of a downlink signal through an automatic frequency control device, and adjusting the reference frequency of a user terminal according to the receiving frequency; determining the initial transmitting frequency of an uplink signal sent to the base station according to the adjusted reference frequency through an automatic frequency control device; determining a transmitting frequency compensation value matched with the receiving frequency according to the receiving frequency calibration table and the transmitting frequency calibration table; compensating and adjusting the initial transmitting frequency by a frequency adjusting device according to the transmitting frequency compensation value; and sending the uplink signal to the base station by the signal sending device at the adjusted transmission frequency. The method can lead the receiving frequency and the transmitting frequency to adopt different frequency adjusting values, reduce the error of the transmitting frequency and achieve the calibration of the receiving frequency and the transmitting frequency with higher precision.

Description

Frequency compensation method, device, user terminal and storage medium
Technical Field
The embodiment of the invention relates to the technical field of mobile communication, in particular to a frequency compensation method, a frequency compensation device, a user terminal and a storage medium.
Background
In mobile communication, a user terminal receives a downlink signal transmitted by a base station to detect a frequency deviation with the base station, and the conventional scheme generally adjusts the frequency deviation in real time by adjusting a reference frequency value (such as a crystal oscillator or a crystal) according to a receiving frequency, so that the frequencies of the user terminal and the base station are kept in a relatively consistent range. The user terminal transmits a signal based on the reference frequency value from which the frequency deviation is removed.
However, for a Time Division Duplex (TDD) system, the same reference frequency is used for uplink and downlink communication, and after the reference frequency value is adjusted by using the existing scheme, the difference Δ F still exists between the transmission frequency and the reception frequency of the user terminal itself, as shown in fig. 1, the reception frequency is made to be F by adjusting the reference frequency value (such as a crystal oscillator or a crystal), but because the difference Δ F exists between the transmission frequency and the reception frequency of the user terminal itself, the transmission frequency is actually F + Δ F, and the frequency of the base station is F, that is, after the reference frequency value is adjusted by using the existing scheme, the difference Δ F still exists between the transmission frequency and the reception frequency. The absolute value of the deviation becomes larger as the carrier frequency becomes higher, and the absolute value of the deviation is very large when high frequency communication such as 5G communication or millimeter wave communication is performed, and it is likely that the requirements of the 3GPP and other specifications for the index will not be satisfied.
This problem is even more pronounced in Mobile Ad Hoc networks (MANETs). The mobile ad hoc network is composed of a group of wireless mobile nodes, and the point-to-multipoint star ad hoc network is one of topological structures of the mobile ad hoc network, is composed of (N +1) nodes and comprises 1 central node and N access nodes. The central node acts as a base station in the whole network and completes tasks such as network distribution, broadcasting, forwarding, control and the like. The access node acts as a terminal in the whole network and completes tasks of network searching access, data receiving and transmitting, signal quality feedback and the like. The access nodes behave as subscribers to the central node.
When a multi-node network is established, a master control multi-node condition exists, and due to the fact that deviation exists between receiving frequency and transmitting frequency, after multi-hop, frequency deviation of the node can accumulate a large value. The reason is that all nodes adjust frequency deviation by taking the transmission signal of the main node as a reference, when frequency deviation exists between the receiving frequency and the transmitting frequency, frequency deviation accumulation is caused, and the more nodes, the larger the accumulation value is. As shown in fig. 2, when there is a frequency deviation Δ f0 between the receiving frequency of the master node and the transmitting frequency, there is a frequency deviation Δ f1 between the receiving frequency of the slave node 1 and the transmitting frequency, and there is a frequency deviation Δ f2 between the receiving frequency of the slave node 2 and the transmitting frequency, after passing through two nodes, the frequency deviation will be accumulated (Δ f0+ Δ f1+ Δ f2), and when there are more nodes, the frequency deviation will be larger, and when n nodes pass through, the frequency deviation will be accumulated (Δ f0+ Δ f1+ Δ f2+ … + Δ fn), so that the frequency deviation is very large, and the requirement that the receiving frequency deviation Δ f and the transmitting frequency deviation Δ f are very small is not satisfied.
In addition, the frequency calibration adopted by the existing scheme is only directed at the reference frequency, and is not suitable for the calibration requirement of the carrier frequency with high precision.
Disclosure of Invention
The embodiment of the invention provides a frequency compensation method, a frequency compensation device, a user terminal and a storage medium, which are used for improving the calibration precision of a receiving frequency and a transmitting frequency and reducing the error of the transmitting frequency.
In a first aspect, an embodiment of the present invention provides a frequency compensation method, where the method includes:
receiving a downlink signal sent by a base station through a signal receiving device;
acquiring the receiving frequency of the downlink signal through an automatic frequency control device, and adjusting the reference frequency of the user terminal according to the receiving frequency;
determining, by the automatic frequency control device, an initial transmission frequency of an uplink signal transmitted to the base station according to the adjusted reference frequency;
determining a transmitting frequency compensation value matched with the receiving frequency according to a receiving frequency calibration table and a transmitting frequency calibration table;
compensating and adjusting the initial transmitting frequency according to the transmitting frequency compensation value through a frequency adjusting device;
and sending the uplink signal to the base station by using the adjusted transmission frequency through a signal sending device.
In a second aspect, an embodiment of the present invention further provides a frequency compensation apparatus, including:
a downlink signal receiving module, configured to receive a downlink signal sent by a base station through a signal receiving apparatus;
a reference frequency adjusting module, configured to obtain a receiving frequency of the downlink signal through an automatic frequency control device, and adjust a reference frequency of a user terminal according to the receiving frequency;
an initial transmitting frequency determining module, configured to determine, by the automatic frequency control device, an initial transmitting frequency of an uplink signal sent to the base station according to the adjusted reference frequency;
a transmitting frequency compensation value determining module, configured to determine a transmitting frequency compensation value matched with the receiving frequency according to a receiving frequency calibration table and a transmitting frequency calibration table;
the initial transmitting frequency compensation adjusting module is used for performing compensation adjustment on the initial transmitting frequency according to the transmitting frequency compensation value through a frequency adjusting device;
and the uplink signal sending module is used for sending the uplink signal to the base station through the signal sending device at the adjusted sending frequency.
In a third aspect, an embodiment of the present invention further provides a user terminal, where the user terminal includes:
one or more processors;
a signal receiving device, configured to receive a downlink signal sent by a base station;
the automatic frequency control device is used for acquiring the receiving frequency of the downlink signal and adjusting the reference frequency of the user terminal according to the receiving frequency; determining the initial transmitting frequency of the uplink signal sent to the base station according to the adjusted reference frequency;
the frequency adjusting device is used for compensating and adjusting the initial transmitting frequency according to the transmitting frequency compensation value;
a signal transmitting device for transmitting an uplink signal to a base station;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement a method of frequency compensation as in any embodiment of the invention.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement a frequency compensation method according to any embodiment of the present invention.
The embodiment of the invention receives the downlink signal sent by the base station through the signal receiving device; acquiring the receiving frequency of a downlink signal through an automatic frequency control device, and adjusting the reference frequency of a user terminal according to the receiving frequency; determining the initial transmitting frequency of an uplink signal sent to the base station according to the adjusted reference frequency through an automatic frequency control device; determining a transmitting frequency compensation value matched with the receiving frequency according to the receiving frequency calibration table and the transmitting frequency calibration table; compensating and adjusting the initial transmitting frequency by a frequency adjusting device according to the transmitting frequency compensation value; the uplink signal is sent to the base station by the signal sending device at the adjusted transmitting frequency, so that the problem that the receiving frequency and the transmitting frequency of the user terminal have frequency deviation is solved, the error of the transmitting frequency is reduced, and the effect of calibrating the receiving frequency and the transmitting frequency with higher precision is achieved.
Drawings
Fig. 1 is a schematic diagram of frequency deviation of a receiving frequency and a transmitting frequency of a user terminal in mobile communication in the prior art;
FIG. 2 is a schematic diagram illustrating frequency offset accumulation of a mobile ad hoc network through two slave nodes in the prior art;
fig. 3 is a flowchart of a frequency compensation method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a frequency calibration circuit according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of determining a transmit frequency compensation value according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a frequency adjustment according to an embodiment of the present invention;
fig. 7 is a flowchart of a frequency compensation method according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of a frequency compensation apparatus according to a third embodiment of the present invention;
fig. 9 is a schematic structural diagram of a user terminal according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 3 is a flowchart of a frequency compensation method according to an embodiment of the present invention, where the embodiment is applicable to a case of adjusting a frequency deviation between a receiving frequency and a transmitting frequency in a mobile communication network such as a TDD system or a mobile ad hoc network, the method may be executed by a frequency compensation device, the frequency compensation device may be implemented by software and/or hardware, the frequency compensation device may be integrated in a user terminal, as shown in fig. 3, and the method specifically includes:
step 110, receiving, by the signal receiving apparatus, a downlink signal transmitted by the base station.
The signal receiving device is arranged in the user terminal, and the user terminal can receive downlink signals sent by the base station or equipment meeting similar functions of the base station through the signal receiving device. The downlink signal may be a wireless signal or a wired signal.
And step 120, acquiring the receiving frequency of the downlink signal through the automatic frequency control device, and adjusting the reference frequency of the user terminal according to the receiving frequency.
The user terminal can obtain the receiving frequency of the downlink signal sent by the base station or the equipment meeting the similar functions of the base station, the automatic frequency control device is arranged in the user terminal, and the automatic frequency control device can obtain the receiving frequency of the downlink signal received by the user terminal. According to the receiving frequency, the automatic frequency control device adjusts the reference frequency of the user terminal, and the reference frequency can be provided by the crystal oscillator or crystal of the user terminal. The crystal oscillator or crystal is adjusted to make the receiving frequency of the user terminal consistent with the frequency of the base station or the equipment satisfying the similar function of the base station.
And step 130, determining the initial transmitting frequency of the uplink signal sent to the base station by the automatic frequency control device according to the adjusted reference frequency.
The initial transmission frequency of the uplink signal sent by the user terminal to the base station or the device satisfying the similar function of the base station can be determined to be the adjusted reference frequency. For a user terminal, there may be a difference, i.e., a frequency offset, between the transmitting frequency and the receiving frequency of the user terminal itself. That is, when the user terminal transmits an uplink signal to the base station or a device satisfying a similar function to the base station using the initial transmission frequency, the initial transmission frequency based on the downlink adjustment amount may be deviated. In the TDD system, the frequency deviation between the transmitting frequency and the receiving frequency becomes larger as the carrier frequency becomes higher. For high frequency communication such as 5G communication or millimeter wave communication, the absolute value of the frequency deviation may be very large, and may not even meet the requirements of 3GPP and other specifications. In the MANET, frequency deviation among multiple nodes can be accumulated, and the accumulated frequency deviation can be larger as more nodes pass through, so that the precision requirement of the frequency deviation is not met. Therefore, it is desirable to reduce or eliminate the frequency offset that exists between the transmit and receive frequencies.
And step 140, determining a transmission frequency compensation value matched with the receiving frequency according to the receiving frequency calibration table and the transmission frequency calibration table.
The embodiment of the invention can determine the transmitting frequency compensation value matched with the receiving frequency through the receiving frequency calibration table and the transmitting frequency calibration table. The receiving frequency calibration table and the transmitting frequency calibration table may be generated by a frequency calibration circuit, and may be stored in a memory such as a flash memory of the user terminal. The frequency deviation of the receiving frequency calibration table and the transmitting frequency calibration table under the corresponding preset communication parameters can be calculated, and the frequency deviation is used as a transmitting frequency compensation value matched with the receiving frequency under the preset communication parameters. Therefore, according to the actual communication parameters of the uplink signals sent by the user terminal, the preset communication parameters consistent with the actual communication parameters are found, and the initial transmitting frequency is compensated and adjusted by using the transmitting frequency compensation value matched with the receiving frequency under the preset communication parameters, so that the effect of reducing the frequency deviation between the transmitting frequency and the receiving frequency is achieved.
In an implementation manner of the embodiment of the present invention, before determining the transmit frequency compensation value matching the receive frequency according to the receive frequency calibration table and the transmit frequency calibration table, optionally, the method further includes: acquiring a pre-stored receiving frequency calibration table and a pre-stored transmitting frequency calibration table; wherein the receive frequency calibration table and the transmit frequency calibration table are generated by a frequency calibration circuit, the frequency calibration circuit comprising: the system comprises a user terminal, a first instrument and a second instrument, wherein the first instrument is used for receiving signals sent by the user terminal, and the second instrument is used for sending signals to the user terminal.
Fig. 4 is a schematic diagram of a frequency calibration circuit according to an embodiment of the present invention. As shown in fig. 4, optionally, the first instrument is a spectrum analyzer, and is capable of receiving a signal sent by a user terminal and acquiring a sending frequency of the signal sent by the user terminal; the second instrument is a signal source and can send signals to the user terminal, and the user terminal can obtain the receiving frequency of the received signals. Wherein, the first meter can also be other meters capable of detecting signals, such as a comprehensive tester; the second meter may also be other meters with signal transmitting function, such as a comprehensive measuring instrument. The first instrument and the second instrument can be connected through a synchronous signal, so that the frequency spectrograph and the signal source can keep the same reference source, and the high precision of the measured receiving frequency and the measured transmitting frequency is ensured. The frequency calibration circuit calibrates the receiving frequency and the transmitting frequency of the user terminal instead of the conventional calibration of the reference frequency of the crystal oscillator or the crystal, and does not need to obtain the initial value and the slope of the conventional crystal oscillator or the conventional crystal but needs to obtain the receiving frequency and the transmitting frequency of the user terminal. Therefore, for the selection of the reference source, a stable source which is not affected by environmental factors such as temperature and the like needs to be used, the signal output by the signal source can be used as the reference source, and other stable sources can also be used as the reference source.
In an implementation manner of the embodiment of the present invention, as shown in fig. 4, optionally, the user terminal includes a reference frequency conversion device, configured to select a reference frequency during calibration of the normal communication and receiving frequency and the transmitting frequency; when the receiving frequency and the transmitting frequency are calibrated, the reference frequency conversion device selects the second instrument to provide the reference frequency; when the communication is normal, the reference frequency conversion device selects a crystal oscillator or a crystal to provide the reference frequency.
As shown in fig. 4, when the receiving frequency and the transmitting frequency are calibrated, the reference frequency conversion device selects the second instrument to provide the reference frequency, and a stable source such as a signal source can be adopted, so that the frequency deviation of the receiving frequency and the transmitting frequency can be accurately obtained, the influence of factors such as temperature on the frequency is eliminated, and a high-precision compensation value can be provided for the compensation adjustment of the subsequent transmitting frequency. When the communication is normal, the reference frequency conversion device selects the crystal oscillator or the crystal to provide the reference frequency, so that the actual application scene requirement of the user terminal can be met.
In an implementation manner of the embodiment of the present invention, as shown in fig. 4, optionally, a method for generating a receiving frequency calibration table and a transmitting frequency calibration table by a frequency calibration circuit includes: sending a first signal to a user terminal through a second instrument according to preset communication parameters; receiving a first signal through a user terminal, and acquiring the frequency of the first signal, wherein the frequency of the first signal is used for generating a receiving frequency calibration table, the receiving frequency calibration table comprises at least one piece of first frequency information, and the first frequency information comprises the frequency of the first signal and corresponding preset communication parameters; sending a second signal to the first instrument through the user equipment according to the same preset communication parameters; and receiving a second signal through the first instrument, and acquiring the frequency of the second signal, wherein the frequency of the second signal is used for generating a transmission frequency calibration table, the transmission frequency calibration table comprises at least one piece of second frequency information, and the second frequency information comprises the frequency of the second signal and corresponding preset communication parameters.
As shown in fig. 4, the preset communication parameter may be a preset frequency point and a preset bandwidth, the signal source may send the first signal to the user terminal at the preset frequency point and the preset bandwidth, and the user terminal may obtain the frequency of the first signal and record the preset frequency point, the preset bandwidth, and the frequency of the corresponding first signal. The frequency of the first signal transmitted under a plurality of preset communication parameters can be recorded, and a receiving frequency calibration table is generated. The user terminal can be set to send the second signal under preset communication parameters such as a preset frequency point, a preset bandwidth and a preset power, and the frequency spectrograph receives the second signal and obtains the frequency of the second signal. The frequency of the second signal transmitted under a plurality of preset communication parameters can be recorded, and a transmission frequency calibration table is generated. In order to receive the correspondence of the frequency calibration table and the transmission frequency calibration table, the first signal and the second signal may be transmitted at the same preset communication parameters. In practice, the inventor finds that the transmission frequency of the user terminal is not greatly affected by the power, so that the power when the second signal is transmitted may not be limited, and correspondingly, the transmission frequency calibration table may be generated by a preset frequency point, a preset bandwidth and a frequency of the corresponding second signal.
In an implementation manner of the embodiment of the present invention, optionally, determining a transmission frequency compensation value matching a reception frequency according to the reception frequency calibration table and the transmission frequency calibration table includes: determining at least one target receiving frequency corresponding to at least one preset communication parameter in a receiving frequency calibration table; determining at least one target transmission frequency corresponding to at least one preset communication parameter in a transmission frequency calibration table; determining a frequency deviation between at least one target receiving frequency and at least one matched target transmitting frequency respectively; generating a transmission frequency compensation table according to each frequency deviation and the corresponding preset communication parameters, wherein the transmission frequency compensation table comprises at least one piece of third frequency information, and the third frequency information comprises the frequency deviation and the corresponding preset communication parameters; and determining a transmission frequency compensation value matched with the receiving frequency according to the transmission frequency compensation table.
Fig. 5 is a schematic flow chart illustrating a process of determining a transmit frequency compensation value according to an embodiment of the present invention. As shown in fig. 5, determining a transmission frequency compensation value matched with the reception frequency according to the reception frequency calibration table and the transmission frequency calibration table, which may be to search for a corresponding target reception frequency in the reception frequency calibration table under the same preset frequency point and preset bandwidth; the corresponding target transmitting frequency in the transmitting frequency calibration table can be searched under the same preset frequency point and preset bandwidth and preset power, the target receiving frequency subtracts the target transmitting frequency to obtain a frequency deviation which is used as a corresponding preset frequency point, a preset bandwidth and a transmitting frequency compensation value under the preset power, and the transmitting frequency compensation table is generated through the transmitting frequency compensation value and the corresponding preset frequency point, preset bandwidth and preset power. Wherein, there may not be preset power in the calibration table of the transmitting frequency. The transmission frequency compensation table may be stored in a memory such as a flash memory of the user terminal. When the user terminal sends an uplink signal to the base station or a device with a similar function of the base station, the corresponding transmission frequency compensation value in the transmission frequency compensation table can be inquired according to the frequency point (which can be a carrier frequency), the bandwidth and the power (or no power, and whether power exists can be determined according to the actual condition of the transmission frequency calibration table) for sending the uplink signal, so that the transmission frequency is compensated and adjusted by the transmission frequency compensation value, and the transmission frequency of the user terminal is consistent with the receiving frequency.
And 150, compensating and adjusting the initial transmitting frequency by the frequency adjusting device according to the transmitting frequency compensation value.
Fig. 6 is a schematic diagram of frequency adjustment according to an embodiment of the present invention, and as shown in fig. 6, the frequency adjustment device is disposed in the user terminal, and the frequency adjustment device adds the transmission frequency compensation value- Δ F to the initial transmission frequency F + Δ F to perform compensation adjustment, so that the transmission frequency F + Δ F- Δ F of the user terminal is consistent with the receiving frequency F.
And step 160, sending the uplink signal to the base station by the signal sending device at the adjusted sending frequency.
The corresponding transmission frequency compensation value in the transmission frequency compensation table can be queried according to the frequency point (which can be the carrier frequency), the bandwidth and the power of the uplink signal to be transmitted, the initial transmission frequency is compensated and adjusted by the transmission frequency compensation value, the uplink signal is transmitted to the base station or equipment with the similar function of the base station by using the adjusted transmission frequency, and the transmission frequency of the user terminal can be consistent with the receiving frequency. The receiving frequency and the transmitting frequency precision of the user terminal can be improved.
The embodiment of the invention receives the downlink signal sent by the base station through the signal receiving device; acquiring the receiving frequency of a downlink signal through an automatic frequency control device, and adjusting the reference frequency of a user terminal according to the receiving frequency; determining the initial transmitting frequency of an uplink signal sent to the base station according to the adjusted reference frequency through an automatic frequency control device; determining a transmitting frequency compensation value matched with the receiving frequency according to the receiving frequency calibration table and the transmitting frequency calibration table; compensating and adjusting the initial transmitting frequency by a frequency adjusting device according to the transmitting frequency compensation value; the uplink signal is sent to the base station by the adjusted transmitting frequency through the signal sending device, so that the problem that the receiving frequency and the transmitting frequency of the user terminal have frequency deviation is solved, the receiving frequency is adjusted according to the reference frequency, the transmitting frequency is compensated and adjusted according to the transmitting frequency compensation value, the receiving frequency and the transmitting frequency adopt different frequency adjustment values, the traditional receiving frequency and the traditional transmitting frequency adopt the same frequency adjustment strategy, the transmitting frequency error is reduced, and the effect of calibrating the receiving frequency and the transmitting frequency with higher precision is achieved. The method has a better effect on the scenes of high carrier frequency such as 5G or millimeter wave and the like, can also meet the requirement of the mobile ad hoc network on more accurate receiving frequency and transmitting frequency, has wide adaptability and can be suitable for frequency compensation of multiple scenes.
Example two
Fig. 7 is a flowchart of a frequency compensation method according to a second embodiment of the present invention, which is a further refinement of the foregoing technical solution, and can be combined with various alternatives in one or more of the foregoing embodiments.
As shown in fig. 7, the method specifically includes:
step 210, receiving, by the signal receiving apparatus, a downlink signal transmitted by the base station.
Step 220, obtaining the receiving frequency of the downlink signal through the automatic frequency control device, and adjusting the reference frequency of the user terminal according to the receiving frequency.
And step 230, determining the initial transmitting frequency of the uplink signal sent to the base station by the automatic frequency control device according to the adjusted reference frequency.
Step 240, acquiring a pre-stored receiving frequency calibration table and a pre-stored transmitting frequency calibration table; wherein the receive frequency calibration table and the transmit frequency calibration table are generated by a frequency calibration circuit, the frequency calibration circuit comprising: the system comprises a user terminal, a first instrument and a second instrument, wherein the first instrument is used for receiving signals sent by the user terminal, and the second instrument is used for sending signals to the user terminal.
Optionally, the method for generating the receiving frequency calibration table and the transmitting frequency calibration table by the frequency calibration circuit includes: sending a first signal to a user terminal through a second instrument according to preset communication parameters; receiving a first signal through a user terminal, and acquiring the frequency of the first signal, wherein the frequency of the first signal is used for generating a receiving frequency calibration table, the receiving frequency calibration table comprises at least one piece of first frequency information, and the first frequency information comprises the frequency of the first signal and corresponding preset communication parameters; sending a second signal to the first instrument through the user equipment according to the same preset communication parameters; and receiving a second signal through the first instrument, and acquiring the frequency of the second signal, wherein the frequency of the second signal is used for generating a transmission frequency calibration table, the transmission frequency calibration table comprises at least one piece of second frequency information, and the second frequency information comprises the frequency of the second signal and corresponding preset communication parameters.
Optionally, the user terminal includes a reference frequency conversion device, configured to select a reference frequency during normal communication and calibration of the receiving frequency and the transmitting frequency; when the receiving frequency and the transmitting frequency are calibrated, the reference frequency conversion device selects the second instrument to provide the reference frequency; when the communication is normal, the reference frequency conversion device selects a crystal oscillator or a crystal to provide the reference frequency.
Step 250, determining at least one target receiving frequency corresponding to at least one preset communication parameter in a receiving frequency calibration table; determining at least one target transmission frequency corresponding to at least one preset communication parameter in a transmission frequency calibration table; determining a frequency deviation between at least one target receiving frequency and at least one matched target transmitting frequency respectively; and generating a transmission frequency compensation table according to each frequency deviation and the corresponding preset communication parameters, wherein the transmission frequency compensation table comprises at least one piece of third frequency information, and the third frequency information comprises the frequency deviation and the corresponding preset communication parameters.
Step 260, judging whether the frequency deviation corresponding to at least one group of preset communication parameters in the transmission frequency compensation table is in a preset frequency interval; if yes, any frequency value in the preset frequency interval is selected as a target frequency value, and the target frequency value is used as a frequency deviation corresponding to at least one group of preset communication parameters.
Whether the frequency deviations within the preset communication parameter range are the same or not can be judged by a certain step length, that is, whether the frequency deviation corresponding to a plurality of preset frequency points adjacent in size, a plurality of preset bandwidths adjacent in size or a plurality of preset powers adjacent in size in the transmission frequency compensation table (if the transmission frequency compensation table does not have information of the preset powers, the frequency deviation corresponding to a plurality of preset frequency points adjacent in size or a plurality of preset bandwidths adjacent in size in the transmission frequency compensation table) is in a preset frequency interval with a smaller interval length is judged, and the preset frequency interval can be set according to a certain preset frequency point, a certain preset bandwidth or a certain preset power (also can be according to a certain preset frequency point or a certain preset bandwidth). If so, any frequency value in the preset frequency interval may be selected, for example, a middle value or an end value of the preset frequency interval is used as a new frequency deviation corresponding to a plurality of preset frequency points with adjacent sizes, a plurality of preset bandwidths with adjacent sizes, or a plurality of preset powers with adjacent sizes. The selected average value of the original frequency deviations corresponding to the plurality of preset frequency points with adjacent sizes, the plurality of preset bandwidths with adjacent sizes or the plurality of preset powers with adjacent sizes can be calculated to serve as the corresponding new frequency deviation. That is to say, when the original frequency deviations corresponding to the multiple adjacent preset frequency points, the multiple adjacent preset bandwidths, or the multiple adjacent preset powers (or the multiple adjacent preset frequency points or the multiple adjacent preset bandwidths) have a small difference, the same frequency deviation may be used as the transmission frequency compensation value. The size of the transmission frequency compensation table can be reduced, and the storage space is saved. The transmission frequency compensation value may be a corresponding frequency deviation that may be determined according to a frequency point, a bandwidth, and a power of an uplink signal transmitted by the user terminal.
And 270, compensating and adjusting the initial transmitting frequency through the frequency adjusting device according to the transmitting frequency compensation value.
Step 280, the uplink signal is transmitted to the base station through the signal transmitting device at the adjusted transmitting frequency.
The embodiment of the invention receives the downlink signal sent by the base station through the signal receiving device; acquiring the receiving frequency of a downlink signal through an automatic frequency control device, and adjusting the reference frequency of a user terminal according to the receiving frequency; determining the initial transmitting frequency of an uplink signal sent to the base station according to the adjusted reference frequency through an automatic frequency control device; acquiring a pre-stored receiving frequency calibration table and a pre-stored transmitting frequency calibration table; wherein the receive frequency calibration table and the transmit frequency calibration table are generated by a frequency calibration circuit, the frequency calibration circuit comprising: the system comprises a user terminal, a first instrument and a second instrument, wherein the first instrument is used for receiving a signal sent by the user terminal, and the second instrument is used for sending the signal to the user terminal; determining at least one target receiving frequency corresponding to at least one preset communication parameter in a receiving frequency calibration table; determining at least one target transmission frequency corresponding to at least one preset communication parameter in a transmission frequency calibration table; determining a frequency deviation between at least one target receiving frequency and at least one matched target transmitting frequency respectively; generating a transmission frequency compensation table according to each frequency deviation and the corresponding preset communication parameters, wherein the transmission frequency compensation table comprises at least one piece of third frequency information, and the third frequency information comprises the frequency deviation and the corresponding preset communication parameters; judging whether the frequency deviation corresponding to at least one group of preset communication parameters in the transmission frequency compensation table is in a preset frequency interval or not; if so, selecting any frequency value in a preset frequency interval as a target frequency value, and using the target frequency value as a frequency deviation corresponding to at least one group of preset communication parameters; compensating and adjusting the initial transmitting frequency by a frequency adjusting device according to the transmitting frequency compensation value; the uplink signal is sent to the base station by the adjusted transmitting frequency through the signal sending device, so that the problem that the receiving frequency and the transmitting frequency of the user terminal have frequency deviation is solved, the receiving frequency is adjusted according to the reference frequency, the transmitting frequency is compensated and adjusted according to the transmitting frequency compensation value, the receiving frequency and the transmitting frequency adopt different frequency adjustment values, the traditional receiving frequency and the traditional transmitting frequency adopt the same frequency adjustment strategy, the transmitting frequency error is reduced, and the receiving frequency and the transmitting frequency are calibrated with higher precision.
EXAMPLE III
Fig. 8 is a schematic structural diagram of a frequency compensation apparatus according to a third embodiment of the present invention. With reference to fig. 8, the apparatus comprises: a downlink signal receiving module 310, a reference frequency adjusting module 320, an initial transmitting frequency determining module 330, a transmitting frequency compensation value determining module 340, an initial transmitting frequency compensation adjusting module 350 and an uplink signal transmitting module 360.
The downlink signal receiving module 310 is configured to receive a downlink signal sent by a base station through a signal receiving apparatus;
a reference frequency adjusting module 320, configured to obtain a receiving frequency of the downlink signal through an automatic frequency control device, and adjust a reference frequency of the user terminal according to the receiving frequency;
an initial transmitting frequency determining module 330, configured to determine, by the automatic frequency control device, an initial transmitting frequency of the uplink signal sent to the base station according to the adjusted reference frequency;
a transmission frequency compensation value determining module 340, configured to determine a transmission frequency compensation value matched with the reception frequency according to the reception frequency calibration table and the transmission frequency calibration table;
an initial transmitting frequency compensation adjusting module 350, configured to perform compensation adjustment on an initial transmitting frequency according to the transmitting frequency compensation value through a frequency adjusting device;
and an uplink signal sending module 360, configured to send the uplink signal to the base station at the adjusted transmission frequency through the signal sending apparatus.
The embodiment of the invention receives the downlink signal sent by the base station through the signal receiving device; acquiring the receiving frequency of a downlink signal through an automatic frequency control device, and adjusting the reference frequency of a user terminal according to the receiving frequency; determining the initial transmitting frequency of an uplink signal sent to the base station according to the adjusted reference frequency through an automatic frequency control device; determining a transmitting frequency compensation value matched with the receiving frequency according to the receiving frequency calibration table and the transmitting frequency calibration table; compensating and adjusting the initial transmitting frequency by a frequency adjusting device according to the transmitting frequency compensation value; the uplink signal is sent to the base station by the adjusted transmitting frequency through the signal sending device, so that the problem that the receiving frequency and the transmitting frequency of the user terminal have frequency deviation is solved, the receiving frequency is adjusted according to the reference frequency, the transmitting frequency is compensated and adjusted according to the transmitting frequency compensation value, the receiving frequency and the transmitting frequency adopt different frequency adjustment values, the traditional receiving frequency and the traditional transmitting frequency adopt the same frequency adjustment strategy, the transmitting frequency error is reduced, and the effect of calibrating the receiving frequency and the transmitting frequency with higher precision is achieved. The method has a better effect on the scenes of high carrier frequency such as 5G or millimeter wave and the like, can also meet the requirement of the mobile ad hoc network on more accurate receiving frequency and transmitting frequency, has wide adaptability and can be suitable for frequency compensation of multiple scenes.
On the basis of the foregoing embodiment, optionally, the apparatus provided in the embodiment of the present invention further includes: a calibration table acquisition module for acquiring a pre-stored receiving frequency calibration table and a pre-stored transmitting frequency calibration table before determining a transmitting frequency compensation value matched with the receiving frequency according to the receiving frequency calibration table and the transmitting frequency calibration table; wherein the receive frequency calibration table and the transmit frequency calibration table are generated by a frequency calibration circuit, the frequency calibration circuit comprising: the system comprises a user terminal, a first instrument and a second instrument, wherein the first instrument is used for receiving signals sent by the user terminal, and the second instrument is used for sending signals to the user terminal.
On the basis of the foregoing embodiment, optionally, the calibration table obtaining module includes: the connecting unit is used for connecting the first instrument and the second instrument through a synchronous signal; the first instrument is a frequency spectrograph or other instruments capable of detecting signals, such as a comprehensive tester, and the second instrument is a signal source or other instruments with a signal transmitting function, such as a comprehensive tester.
On the basis of the foregoing embodiment, optionally, the calibration table obtaining module includes: the first signal sending unit is used for sending a first signal to the user terminal through a second instrument according to preset communication parameters; the device comprises a first signal frequency acquisition unit, a first signal processing unit and a second signal frequency acquisition unit, wherein the first signal frequency acquisition unit is used for receiving a first signal through a user terminal and acquiring the frequency of the first signal, the frequency of the first signal is used for generating a receiving frequency calibration table, the receiving frequency calibration table comprises at least one piece of first frequency information, and the first frequency information comprises the frequency of the first signal and a corresponding preset communication parameter; the second signal sending unit is used for sending a second signal to the first instrument through the user terminal according to the same preset communication parameters; and the frequency acquisition unit of the second signal is used for receiving the second signal through the first instrument and acquiring the frequency of the second signal, wherein the frequency of the second signal is used for generating a transmission frequency calibration table, the transmission frequency calibration table comprises at least one piece of second frequency information, and the second frequency information comprises the frequency of the second signal and corresponding preset communication parameters.
On the basis of the above embodiment, optionally, the transmission frequency compensation value determining module 340 includes: a target receiving frequency determining unit, configured to determine, in a receiving frequency calibration table, at least one target receiving frequency corresponding to at least one preset communication parameter; the target transmitting frequency determining unit is used for determining at least one target transmitting frequency corresponding to at least one preset communication parameter in the transmitting frequency calibration table; a frequency deviation determination unit for determining a frequency deviation between the at least one target reception frequency and the matched at least one target transmission frequency, respectively; the transmission frequency compensation table generating unit is used for generating a transmission frequency compensation table according to each frequency deviation and the corresponding preset communication parameters, the transmission frequency compensation table comprises at least one piece of third frequency information, and the third frequency information comprises the frequency deviation and the corresponding preset communication parameters; and the transmitting frequency compensation value determining unit is used for determining a transmitting frequency compensation value matched with the receiving frequency according to the transmitting frequency compensation table.
On the basis of the above embodiment, optionally, the apparatus further includes: the judging module is used for judging whether the frequency deviation corresponding to at least one group of preset communication parameters in the transmission frequency compensation table is in a preset frequency interval or not after the transmission frequency compensation table is generated according to each frequency deviation and the corresponding preset communication parameters; if yes, any frequency value in the preset frequency interval is selected as a target frequency value, and the target frequency value is used as a frequency deviation corresponding to at least one group of preset communication parameters.
On the basis of the above embodiment, optionally, the user terminal includes a reference frequency conversion device, configured to select a reference frequency during calibration of the normal communication and receiving frequency and the transmitting frequency; when the receiving frequency and the transmitting frequency are calibrated, the reference frequency conversion device selects the second instrument to provide the reference frequency; when the communication is normal, the reference frequency conversion device selects a crystal oscillator or a crystal to provide the reference frequency.
The frequency compensation device provided by the embodiment of the invention can execute the frequency compensation method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Example four
Fig. 9 is a schematic structural diagram of a user terminal according to a fourth embodiment of the present invention, and as shown in fig. 9, the user terminal includes:
one or more processors 410, one processor 410 being exemplified in FIG. 9;
a signal receiving device 450, configured to receive a downlink signal sent by a base station;
an automatic frequency control device 460, configured to obtain a receiving frequency of the downlink signal, and adjust a reference frequency of the user equipment according to the receiving frequency; determining the initial transmitting frequency of the uplink signal sent to the base station according to the adjusted reference frequency;
a frequency adjusting device 470, configured to perform compensation adjustment on the initial transmitting frequency according to the transmitting frequency compensation value;
a signal transmitting device 480, configured to transmit an uplink signal to a base station;
a memory 420 for storing one or more programs,
the user terminal may further include: an input device 430 and an output device 440.
The processor 410, the memory 420, the input device 430, the output device 440, the signal receiving device 450, the automatic frequency control device 460, the frequency adjusting device 470 and the signal sending device 480 in the user terminal may be connected through a bus or other means, and fig. 9 illustrates the connection through the bus as an example.
The memory 420 serves as a non-transitory computer-readable storage medium and may be used for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to a frequency compensation method in the embodiment of the present invention (for example, the downlink signal receiving module 310, the reference frequency adjusting module 320, the initial transmitting frequency determining module 330, the transmitting frequency compensation value determining module 340, the initial transmitting frequency compensation adjusting module 350, and the uplink signal transmitting module 360 shown in fig. 8). The processor 410 executes various functional applications and data processing of the computer device by executing the software programs, instructions and modules stored in the memory 420, namely, implementing a frequency compensation method of the above method embodiment, namely:
receiving a downlink signal sent by a base station through a signal receiving device;
acquiring the receiving frequency of the downlink signal through an automatic frequency control device, and adjusting the reference frequency of the user terminal according to the receiving frequency;
determining, by the automatic frequency control device, an initial transmission frequency of an uplink signal transmitted to the base station according to the adjusted reference frequency;
determining a transmitting frequency compensation value matched with the receiving frequency according to a receiving frequency calibration table and a transmitting frequency calibration table;
compensating and adjusting the initial transmitting frequency according to the transmitting frequency compensation value through a frequency adjusting device;
and sending the uplink signal to the base station by using the adjusted transmission frequency through a signal sending device.
The memory 420 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the computer device, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, memory 420 may optionally include memory located remotely from processor 410, which may be connected to the terminal device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 430 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the computer apparatus. The output device 440 may include a display device such as a display screen.
Embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a frequency compensation method according to an embodiment of the present invention:
receiving a downlink signal sent by a base station through a signal receiving device;
acquiring the receiving frequency of the downlink signal through an automatic frequency control device, and adjusting the reference frequency of the user terminal according to the receiving frequency;
determining, by the automatic frequency control device, an initial transmission frequency of an uplink signal transmitted to the base station according to the adjusted reference frequency;
determining a transmitting frequency compensation value matched with the receiving frequency according to a receiving frequency calibration table and a transmitting frequency calibration table;
compensating and adjusting the initial transmitting frequency according to the transmitting frequency compensation value through a frequency adjusting device;
and sending the uplink signal to the base station by using the adjusted transmission frequency through a signal sending device.
Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A method of frequency compensation, comprising:
receiving a downlink signal sent by a base station through a signal receiving device;
acquiring the receiving frequency of the downlink signal through an automatic frequency control device, and adjusting the reference frequency of the user terminal according to the receiving frequency;
determining, by the automatic frequency control device, an initial transmission frequency of an uplink signal transmitted to the base station according to the adjusted reference frequency;
determining a transmitting frequency compensation value matched with the receiving frequency according to a receiving frequency calibration table and a transmitting frequency calibration table;
compensating and adjusting the initial transmitting frequency according to the transmitting frequency compensation value through a frequency adjusting device;
and sending the uplink signal to the base station by using the adjusted transmission frequency through a signal sending device.
2. The method of claim 1, further comprising, prior to determining a transmit frequency compensation value matching the receive frequency from a receive frequency calibration table and a transmit frequency calibration table:
acquiring a pre-stored receiving frequency calibration table and a pre-stored transmitting frequency calibration table;
wherein the receive frequency calibration table and the transmit frequency calibration table are generated by a frequency calibration circuit comprising: the system comprises a user terminal, a first instrument and a second instrument, wherein the first instrument is used for receiving signals sent by the user terminal, and the second instrument is used for sending signals to the user terminal.
3. The method of claim 2, wherein the first meter and the second meter are connected by a synchronization signal; the first instrument is a frequency spectrograph, and the second instrument is a signal source.
4. A method according to any one of claims 2 to 3, wherein the method of generating a receive frequency calibration table and a transmit frequency calibration table by a frequency calibration circuit comprises:
sending a first signal to the user terminal through the second instrument according to preset communication parameters;
receiving the first signal through the user terminal, and acquiring a frequency of the first signal, wherein the frequency of the first signal is used for generating a receiving frequency calibration table, the receiving frequency calibration table comprises at least one piece of first frequency information, and the first frequency information comprises the frequency of the first signal and a corresponding preset communication parameter;
sending a second signal to the first instrument through the user terminal according to the same preset communication parameters;
and receiving the second signal through the first instrument, and acquiring the frequency of the second signal, wherein the frequency of the second signal is used for generating a transmission frequency calibration table, the transmission frequency calibration table comprises at least one piece of second frequency information, and the second frequency information comprises the frequency of the second signal and corresponding preset communication parameters.
5. The method of claim 4, wherein determining a transmit frequency compensation value matching the receive frequency from a receive frequency calibration table and a transmit frequency calibration table comprises:
determining at least one target receiving frequency corresponding to at least one preset communication parameter in a receiving frequency calibration table;
determining at least one target transmission frequency corresponding to the at least one preset communication parameter in a transmission frequency calibration table;
determining a frequency deviation between the at least one target receiving frequency and the matched at least one target transmitting frequency respectively;
generating a transmission frequency compensation table according to each frequency deviation and the corresponding preset communication parameters, wherein the transmission frequency compensation table comprises at least one piece of third frequency information, and the third frequency information comprises the frequency deviation and the corresponding preset communication parameters;
and determining a transmitting frequency compensation value matched with the receiving frequency according to the transmitting frequency compensation table.
6. The method of claim 5, further comprising, after the generating a transmit frequency compensation table based on each of the frequency offsets and the corresponding predetermined communication parameters:
judging whether the frequency deviation corresponding to at least one group of preset communication parameters in the transmission frequency compensation table is in a preset frequency interval or not;
if so, selecting any frequency value in a preset frequency interval as a target frequency value, and taking the target frequency value as a frequency deviation corresponding to the at least one group of preset communication parameters.
7. The method according to claim 2, wherein the user terminal comprises a reference frequency conversion device for selecting a reference frequency for calibration of normal communication and receiving frequency and transmitting frequency;
when the receiving frequency and the transmitting frequency are calibrated, the reference frequency conversion device selects the second meter to provide a reference frequency; when in normal communication, the reference frequency conversion device selects a crystal oscillator or a crystal to provide a reference frequency.
8. A frequency compensation apparatus, comprising:
a downlink signal receiving module, configured to receive a downlink signal sent by a base station through a signal receiving apparatus;
a reference frequency adjusting module, configured to obtain a receiving frequency of the downlink signal through an automatic frequency control device, and adjust a reference frequency of a user terminal according to the receiving frequency;
an initial transmitting frequency determining module, configured to determine, by the automatic frequency control device, an initial transmitting frequency of an uplink signal sent to the base station according to the adjusted reference frequency;
a transmitting frequency compensation value determining module, configured to determine a transmitting frequency compensation value matched with the receiving frequency according to a receiving frequency calibration table and a transmitting frequency calibration table;
the initial transmitting frequency compensation adjusting module is used for performing compensation adjustment on the initial transmitting frequency according to the transmitting frequency compensation value through a frequency adjusting device;
and the uplink signal sending module is used for sending the uplink signal to the base station through the signal sending device at the adjusted sending frequency.
9. A user terminal, characterized in that the user terminal comprises:
one or more processors;
a signal receiving device, configured to receive a downlink signal sent by a base station;
the automatic frequency control device is used for acquiring the receiving frequency of the downlink signal and adjusting the reference frequency of the user terminal according to the receiving frequency; determining the initial transmitting frequency of the uplink signal sent to the base station according to the adjusted reference frequency;
the frequency adjusting device is used for compensating and adjusting the initial transmitting frequency according to the transmitting frequency compensation value;
a signal transmitting device for transmitting an uplink signal to a base station;
a memory for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the frequency compensation method of any one of claims 1-7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the frequency compensation method according to any one of claims 1 to 7.
CN201911157355.0A 2019-11-22 Frequency compensation method, device, user terminal and storage medium Active CN111224909B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911157355.0A CN111224909B (en) 2019-11-22 Frequency compensation method, device, user terminal and storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911157355.0A CN111224909B (en) 2019-11-22 Frequency compensation method, device, user terminal and storage medium

Publications (2)

Publication Number Publication Date
CN111224909A true CN111224909A (en) 2020-06-02
CN111224909B CN111224909B (en) 2024-09-27

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114205201A (en) * 2021-12-31 2022-03-18 京信网络系统股份有限公司 Signal compensation method, signal compensation apparatus, relay device, storage medium, and program product

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1238866A (en) * 1996-09-30 1999-12-15 夸尔柯姆股份有限公司 Apparatus and method for precorrecting timing and frequency in communication systems
CN1239612A (en) * 1996-09-30 1999-12-22 夸尔柯姆股份有限公司 Determination of frequency offsets in communication systems
KR20060124446A (en) * 2005-05-31 2006-12-05 주식회사 팬택 Wireless communication terminal and method for compensating for transmit/receive frequency
WO2007128248A1 (en) * 2006-05-03 2007-11-15 Siemens Aktiengesellschaft Method for frequency tuning in a transmitter and a receiver in a mobile communication terminal to compensate for the influence of the doppler effect, and mobile communication terminal
US20090153398A1 (en) * 2007-12-17 2009-06-18 Motorola, Inc. Method and apparatus for calibrating a global positioning system oscillator
WO2017194008A1 (en) * 2016-05-13 2017-11-16 中兴通讯股份有限公司 Downlink signal processing method and device, and base station

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1238866A (en) * 1996-09-30 1999-12-15 夸尔柯姆股份有限公司 Apparatus and method for precorrecting timing and frequency in communication systems
CN1239612A (en) * 1996-09-30 1999-12-22 夸尔柯姆股份有限公司 Determination of frequency offsets in communication systems
KR20060124446A (en) * 2005-05-31 2006-12-05 주식회사 팬택 Wireless communication terminal and method for compensating for transmit/receive frequency
WO2007128248A1 (en) * 2006-05-03 2007-11-15 Siemens Aktiengesellschaft Method for frequency tuning in a transmitter and a receiver in a mobile communication terminal to compensate for the influence of the doppler effect, and mobile communication terminal
US20090153398A1 (en) * 2007-12-17 2009-06-18 Motorola, Inc. Method and apparatus for calibrating a global positioning system oscillator
WO2017194008A1 (en) * 2016-05-13 2017-11-16 中兴通讯股份有限公司 Downlink signal processing method and device, and base station

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114205201A (en) * 2021-12-31 2022-03-18 京信网络系统股份有限公司 Signal compensation method, signal compensation apparatus, relay device, storage medium, and program product
CN114205201B (en) * 2021-12-31 2023-11-24 京信网络系统股份有限公司 Signal compensation method, signal compensation device, relay device, storage medium, and program product

Similar Documents

Publication Publication Date Title
RU2463741C2 (en) Method and apparatus for measuring round-trip delay in mobile station
CN103427916B (en) The transmitting frequency calibration method of radiofrequency signal, system
CN108810920B (en) Measurement parameter configuration method and device
JP6597935B2 (en) Wireless sensor system, management apparatus, communication control method, and communication control program
US10326556B2 (en) Method and system of frequency correction in LPWAN networks
CN105830365B (en) A kind of monitoring method and device of optical signal to noise ratio
CN115913441A (en) Multimode communication module clock frequency offset joint estimation method and initial frequency offset calibration method
WO2020119748A1 (en) Method and device for establishing and locating fingerprint database, server and storage medium
EP2896129B1 (en) Communications device with oscillator calibration and related methods
JP7237263B2 (en) Wireless communication terminal, wireless communication method and wireless communication program
CN111224909B (en) Frequency compensation method, device, user terminal and storage medium
CN111224909A (en) Frequency compensation method, device, user terminal and storage medium
KR102121320B1 (en) LoRa performance analysis method
US11758508B2 (en) Access Point (AP) placement using Fine Time Measurement (FTM)
JP7082879B2 (en) Interference power estimation device and interference power estimation method
US20210091869A1 (en) Synchronization information transmission method, synchronization method, network node and storage medium
CN114205201B (en) Signal compensation method, signal compensation device, relay device, storage medium, and program product
KR101905434B1 (en) Apparatus for measuring passive intermodulation distortion signal and method for using the same
WO2017070956A1 (en) Data transmission method and device
KR102288600B1 (en) Method for correcting error in frequency generation by a terminal in a wireless communication system
JP2017152978A (en) Communication system, radio communication device, and determination method
CN116366183B (en) Method and device for calibrating chip transmitting power, electronic equipment and storage medium
CN112019317A (en) Frequency calibration method and device, storage medium and electronic device
WO2017121125A1 (en) Link calibration method and apparatus, and radio-frequency feed-in system
JP5445361B2 (en) WIRELESS COMMUNICATION DEVICE, ITS COMMUNICATION METHOD, AND WIRELESS COMMUNICATION SYSTEM

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant