CN115865227A - Calibration method and related device - Google Patents

Calibration method and related device Download PDF

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Publication number
CN115865227A
CN115865227A CN202211446032.5A CN202211446032A CN115865227A CN 115865227 A CN115865227 A CN 115865227A CN 202211446032 A CN202211446032 A CN 202211446032A CN 115865227 A CN115865227 A CN 115865227A
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antenna
value
receiving
signal
calibration
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何川
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Spreadtrum Communications Shenzhen Co ltd
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Spreadtrum Communications Shenzhen Co ltd
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Abstract

The application discloses a calibration method and a related device, wherein the method comprises the following steps: receiving a first signal with the transmitting power of a first preset value transmitted by the instrument through a through port of the coupler based on a first antenna, and receiving the first signal through a coupling port of the coupler based on a second antenna; performing receiving calibration on the first antenna according to the first receiving value and the first preset value, and determining the coupling loss of the second antenna according to the first receiving value and the second receiving value, wherein the first receiving value and the second receiving value are the signal strength of first signals received by the first antenna and the second antenna; receiving and calibrating a second antenna according to a second receiving value, coupling loss and a first preset value; transmitting a second signal with power of a second preset value to the instrument through a through port of the coupler based on the first antenna; and carrying out emission calibration on the first antenna according to a third receiving value and a second preset value, wherein the third receiving value is the signal intensity of a second signal received by the instrument. The method and the device can improve the accuracy of radio frequency calibration.

Description

Calibration method and related device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a calibration method and a related apparatus.
Background
In order to make the rf specification of the terminal meet the standards of the third generation partnership project2 (3 rd generation partnership project2,3 gpp2), the terminal performs rf calibration on the performance of the rf device before the terminal is shipped for use. For example, the receive and transmit functions of the antenna are typically calibrated.
Currently, a terminal supporting a New Radio (NR) technology, a wireless fidelity (Wi-Fi) technology, and an LTE-a (long term evolution advanced) technology is generally designed with multiple antennas. For example, a 1T2R terminal includes 1 transmitting antenna and 2 receiving antennas, and illustratively, the 1T2R terminal includes an antenna 1 and an antenna 2, where the antenna 1 is compatible with signal transmitting and signal receiving functions, and the antenna 2 is only used for signal receiving. For such a terminal with multiple antennas, the transmission path corresponding to each antenna may be connected by using an instrument port to complete radio frequency calibration. However, as the number of antennas increases, more meter ports are required to be occupied for rf calibration.
To reduce instrument port occupancy and improve calibration efficiency, instrument port expansion may be accomplished using a power splitter. For example, for radio frequency calibration of a 1T2R terminal, a 1-to-2 power divider may be used to connect one port of an instrument with transmission paths corresponding to two antennas of the terminal; for a 2T4R terminal, a 1-to-4 power divider may be used to connect one port of the meter with transmission paths corresponding to four antennas of the terminal, and so on. Although the instrument port can be expanded by using the power divider, in an actual calibration process, the load impedance of the power divider dynamically changes due to the conduction or the shutdown of the transmission path of each antenna connected to the power divider and the gain adjustment of each transmission path. For example, the port 1 of the power divider is connected to the antenna 1, and the port 2 of the power divider is connected to the antenna 2. Fig. 1A and 1B are graphs showing the values of the load impedance of ports during some rf calibration. As shown in fig. 1A, when the transmission paths corresponding to the antenna 1 and the antenna 2 are both in the on state, the operating frequency range of the antenna 1 is 1700MHz to 1800MHz and the operating frequency range of the antenna 2 is 1850MHz to 1900MHz by performing the radio frequency calibration on the antenna 1 and the antenna 2. Taking the load impedance corresponding to one frequency in the working frequency interval as an example, when the frequency is 1750MHz, the load impedance of the port 1 is-8.02 dB; the load impedance of port 2 is-7.85 dB at a frequency of 1880 MHz. When the antenna 1 needs to be calibrated separately, the transmission path corresponding to the antenna 2 is closed, in this case, the load impedance of the port 2 is changed from-7.85 dB to-55 dB (corresponding to high impedance) in fig. 1B, and the load impedance of the port 1 is also changed from-8.02 dB in fig. 1A to-10.01 dB in fig. 1B. It follows that the load impedance of the power divider will vary dynamically with operation at the time of radio frequency calibration. If a power divider with dynamically changing load impedance is used during radio frequency calibration, the accuracy of the radio frequency calibration is not high easily.
Disclosure of Invention
The application provides a calibration method and a related device, which can improve the accuracy of radio frequency calibration.
In a first aspect, the present application provides a calibration method, comprising:
receiving a first signal transmitted by the meter through a through port of the coupler based on the first antenna, receiving the first signal through a coupled port of the coupler based on the second antenna; the transmitting power of the first signal is a first preset value;
performing receiving calibration on the first antenna according to a first receiving value and the first preset value, wherein the first receiving value is the signal strength of the first signal received by the first antenna;
determining a coupling loss of the second antenna according to the first receiving value and a second receiving value, wherein the second receiving value is the signal strength of the first signal received by the second antenna, and performing receiving calibration on the second antenna according to the second receiving value, the coupling loss and the first preset value;
transmitting a second signal to the meter through a pass-through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value;
and carrying out emission calibration on the first antenna according to a third receiving value and the second preset value, wherein the third receiving value is the signal strength of the second signal received by the instrument.
In one possible implementation, the method further includes: receiving the second signal transmitted by the first antenna through a coupling port of the coupler based on the second antenna; and performing receiving calibration on the second antenna according to the coupling loss, a fourth receiving value and the second preset value, wherein the fourth receiving value is the signal strength of the second signal received by the second antenna.
In a possible implementation manner, when performing receive calibration on the second antenna according to the second receive value, the coupling loss, and the first preset value, specifically includes: determining a difference value between the first preset value and the coupling loss as a third preset value; the first preset value is any power value in a preset receiver calibration power interval; and carrying out receiving calibration on the second antenna according to the third preset value and the second receiving value.
In a possible implementation manner, when performing receive calibration on the second antenna according to the coupling loss, the fourth receive value, and the second preset value, specifically includes: determining a difference value between the second preset value and the coupling loss as a fourth preset value; the second preset value is any power value in a preset transmitter calibration power interval; and carrying out receiving calibration on the second antenna according to the fourth preset value and the fourth receiving value.
In one possible implementation, before receiving a first signal transmitted by the meter through the through port of the coupler based on the first antenna, the method further includes: receiving a first calibration instruction; responding to the first calibration instruction, and transmitting a first uplink synchronous signal to the instrument, wherein the first uplink synchronous signal is used for indicating the instrument to start a signal transmission function.
In one possible implementation, after performing receive calibration on the second antenna according to the second receive value, the coupling loss, and the first preset value, before transmitting a second signal to the meter through a through port of the coupler based on the first antenna, the method further includes: receiving a second calibration instruction; and responding to the second calibration instruction, and transmitting a second uplink synchronous signal to the meter, wherein the second uplink synchronous signal is used for indicating the meter to be switched from a signal transmitting function to a signal receiving function.
In a second aspect, the present application provides a communication device comprising means for implementing the method of the first aspect and any possible implementation thereof.
In a third aspect, the present application provides a communication device comprising a processor and a communication interface; a communication interface for receiving or transmitting signals; a processor configured to perform the method of the first aspect and any possible implementation thereof as described above.
In one possible implementation, the communication device further includes a memory: a memory for storing a computer program; a processor, in particular for invoking a computer program from a memory, to cause a communication device to perform a method as in the first aspect and any one of its possible implementations as described above.
In a fourth aspect, the present application provides a chip for receiving a first signal transmitted by a meter through a through port of a coupler based on a first antenna, and receiving the first signal through a coupled port of the coupler based on a second antenna; the transmitting power of the first signal is a first preset value; performing receiving calibration on the first antenna according to a first receiving value and the first preset value, wherein the first receiving value is the signal strength of the first signal received by the first antenna; determining a coupling loss of the second antenna according to the first receiving value and a second receiving value, wherein the second receiving value is the signal strength of the first signal received by the second antenna, and performing receiving calibration on the second antenna according to the second receiving value, the coupling loss and the first preset value; transmitting a second signal to the meter through a pass-through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value; and carrying out emission calibration on the first antenna according to a third receiving value and the second preset value, wherein the third receiving value is the signal strength of the second signal received by the instrument.
In a fifth aspect, the present application provides a module device, which includes a communication module, a power module, a storage module, and a chip module, wherein: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or carrying out communication between the module equipment and external equipment; the chip module is used for: receiving a first signal transmitted by a meter through a through port of a coupler based on a first antenna, and receiving the first signal through a coupling port of the coupler based on a second antenna; the transmitting power of the first signal is a first preset value; performing receiving calibration on the first antenna according to a first receiving value and the first preset value, wherein the first receiving value is the signal strength of the first signal received by the first antenna; determining a coupling loss of the second antenna according to the first receiving value and a second receiving value, where the second receiving value is a signal strength of the first signal received by the second antenna, and performing receive calibration on the second antenna according to the second receiving value, the coupling loss, and the first preset value; transmitting a second signal to the meter through a pass-through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value; and carrying out emission calibration on the first antenna according to a third receiving value and the second preset value, wherein the third receiving value is the signal strength of the second signal received by the instrument.
In a sixth aspect, the present application provides a computer-readable storage medium having computer-readable instructions stored thereon, which, when run on a communication device, cause the communication device to perform the method of the first aspect and any of its possible implementations.
In a seventh aspect, the present application provides a computer program or a computer program product comprising computer readable instructions which, when run on a computer, cause the computer to perform the method according to the first aspect and any possible implementation manner thereof.
By the embodiment of the application, signals between the first antenna and the instrument can be coupled to the second antenna by the coupler, so that radio frequency calibration of the first antenna and the second antenna is completed. The coupling degree of the coupler is determined by the coupling loss, and the coupling loss is usually far larger than the dynamic change range of the load impedance, so the influence caused by the dynamic change of the load impedance can be reduced by using the coupler, and the accuracy of radio frequency calibration is improved. Meanwhile, the connection of one port of the instrument and two transmission paths of the first antenna and the second antenna can be completed through the connection of the through port of the coupler and the instrument, the occupation of the port of the instrument is reduced, and the calibration efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described 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 without creative efforts.
FIGS. 1A-1B are graphs illustrating values of load impedance of ports for RF calibration according to embodiments of the present disclosure;
FIGS. 2A-2B are block diagrams of some exemplary calibration systems provided by embodiments of the present application;
fig. 3 is a schematic flowchart of a calibration method according to an embodiment of the present application;
FIG. 4 is a schematic flow chart of another calibration method provided in the embodiments of the present application;
FIG. 5 is a schematic flowchart of another calibration method provided in the embodiments of the present application;
fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of another communication device provided in an embodiment of the present application;
fig. 8 is a schematic structural diagram of a chip provided in an embodiment of the present application;
fig. 9 is a schematic structural diagram of a module apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
The terms "first" and "second," and the like, in the description, claims, and drawings of the present application are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
First, some terms referred to in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.
1. Coupling loss (coupling loss)
Coupling loss refers to the loss of energy that occurs when energy propagates from one circuit or element to another, and is expressed in watts or decibels. In the present application, a coupler is a three-port device, two ports of three ports are directly connected, the two directly connected ports are both called through ports, and one port that is not directly connected is a coupled port. When energy is transmitted between the two through ports, part of the energy is coupled to the coupling port and received by the coupling port, and the difference between the energy received by the coupling port and the energy transmitted between the through ports is the coupling loss.
2. Emission calibration
Emission calibration refers to calibrating the emission function of the rf device. According to the 3GPP2 standard, when the radio frequency device of the terminal transmits a signal, the actual power value of the transmitted signal needs to be equal to the preset power value within the preset transmitter calibration power interval, and the preset power value of the transmitted signal has a corresponding relationship with the control voltage, so that the terminal can enable the radio frequency device to transmit a signal with the actual power value equal to the preset power value through the control voltage. However, due to the inconsistent performance of the rf device, the corresponding relationship between the preset power value and the control voltage may change, and the actual power value of the signal transmitted according to the original corresponding relationship is not necessarily equal to the preset power value. Therefore, the radio frequency device of the terminal needs to be calibrated for transmission, which is to measure the actual power value when the radio frequency device transmits a signal, and adjust the corresponding relationship between the preset power value and the control voltage according to the actual power value and the preset power value to obtain the adjusted corresponding relationship. Further, the adjusted corresponding relationship may be written into a storage medium of the terminal, and the terminal may cause the radio frequency device to transmit a signal having an actual power value and a power value equal to the preset power value based on the control voltage in the adjusted corresponding relationship.
3. Receive calibration
The receiving calibration refers to calibrating the receiving function of the radio frequency device. When a radio frequency device of the terminal receives a signal, the received signal has a larger power range, and the receivable power range of the baseband processing unit for the input signal is smaller than the power range of the received signal. Therefore, the received signal needs to be adjusted based on the corresponding relationship between the receiving gain and the preset power value, so that the amplitude of the baseband signal of the adjusted received signal is maintained at a constant level. However, due to the performance inconsistency of the rf device, the preset power value is different from the actual power value (e.g., the actually measured signal strength) when receiving the signal, and when the terminal processes the received signal according to the receiving gain corresponding to the preset power value in the original corresponding relationship, the baseband signal amplitude of the processed received signal cannot be maintained at a constant level. Therefore, the radio frequency device of the terminal needs to be received and calibrated, wherein the receiving and calibrating are to receive a signal with preset power through the radio frequency device and then measure the actual power value when the radio frequency device receives the signal; and adjusting the corresponding relation between the received signal power value and the received gain through the actual power value and the preset received power value to obtain the adjusted corresponding relation. After the corresponding relationship between the received signal power value and the received gain is adjusted, the adjusted corresponding relationship may be written in a storage medium of the terminal, and the terminal may process the signal with the preset power value based on the received gain in the adjusted corresponding relationship, so that the baseband signal amplitude of the processed signal is maintained at a constant level.
The embodiment of the application can be applied to radio frequency calibration of terminal equipment, for example, when the terminal equipment is a dual-antenna terminal, radio frequency calibration can be performed according to the calibration system shown in fig. 2A. As shown in fig. 2A, the calibration system includes a terminal device 100, a coupler 200, and a meter 300. The terminal device 100 includes an antenna 101 and an antenna 102, where the antenna 101 is an antenna having both functions of transmitting and receiving signals, and the antenna 102 is an antenna having a function of receiving signals. Coupler 200 includes port a, port B, and port C, where port a and port B are pass-through ports and port C is a coupled port. The meter 300 includes a port 301, the port 301 having the functions of transmitting signals and testing the strength of received signals.
When performing radio frequency calibration on the terminal device 100, it is necessary to calibrate the transmission function and the reception function of the antenna 101 and calibrate the reception function of the antenna 102. During the rf calibration, the antenna 101 may be connected to the port a of the coupler, the antenna 102 may be connected to the port C of the coupler, and the port 301 may be connected to the port B of the coupler.
Specifically, when the receiving function of the antenna 101 is calibrated, the function of the meter 300 for transmitting signals can be adopted, the meter 300 transmits signals to the antenna 101 through the port 301, and the signals transmitted by the port 301 sequentially pass through the port B and the port a of the coupler 200 in the transmission process and are finally received by the antenna 101; antenna 101 may be calibrated based on the strength of the signal actually received by antenna 101 and the power of the signal transmitted by port 301. Meanwhile, when passing through the coupler 200, a signal transmitted by the port 301 to the antenna 101 may be received by the port C through coupling, and the port C may transmit the received signal to the antenna 102 after receiving the signal; the coupling loss of the coupler 200 is determined according to the strength of the signal actually received by the antenna 101 and the strength of the signal actually received by the antenna 102, and the antenna 102 is subjected to reception calibration.
Specifically, when the transmitting function of the antenna 101 is calibrated, a signal can be transmitted to the meter 300 by the antenna 101, the signal transmitted by the antenna 101 sequentially passes through the port a and the port B of the coupler 200 in the transmission process, and is finally received by the meter 300 through the port 301, and the port 301 measures the strength of the received signal; antenna 101 may be calibrated for transmission based on the actual measured received signal strength at port 301 and the power of the signal transmitted by antenna 101.
Based on the above process, the present application can complete the rf calibration of the dual-antenna terminal based on one three-port coupler and one meter port.
Optionally, when passing through the coupler 200, the signal transmitted by the antenna 101 to the meter 300 may be received by the port C through signal coupling, and after receiving the signal, the port C may also transmit the received signal to the antenna 102; the antenna 102 may be calibrated for reception based on the determined coupling loss, the actual received signal strength of the antenna 102, and the actual measured received signal strength at the port 301.
Optionally, the terminal device may also be a four-antenna terminal, an eight-antenna terminal, and the like, and when the terminal device is a four-antenna terminal, an eight-antenna terminal, and the like, calibration of all antennas may be completed according to the above procedure by using a plurality of couplers and a plurality of instrument ports.
For example, as shown in the calibration system shown in fig. 2B, the terminal device 100 further includes an antenna 103, an antenna 104, and the like, the antenna 103 is an antenna having both functions of transmitting and receiving signals, and the antenna 104 is an antenna having a function of receiving signals, so that the antenna 103 and the antenna 104 can be calibrated by using two three-port couplers (e.g., the coupler 200 and the coupler 210) and two meter ports (e.g., the port 301 and the port 302). Further, the terminal device 100, the coupler 200, the coupler 210, and the meter 300 may be connected in the connection relationship corresponding to fig. 2B. Wherein, the calibration of the antenna 103 and the antenna 104 is completed according to the calibration flow of the antenna 101 and the antenna 102.
The terminal device in this embodiment may be referred to as a terminal (terminal), a terminal device, a Mobile Station (MS), a Mobile Terminal (MT), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a User Experience (UE) unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, a UE apparatus, or the like.
It should be noted that the terminal device may support at least one wireless communication technology, such as LTE, NR, etc. For example, the terminal device may be a mobile phone (mobile phone), a tablet (pad), a desktop, a notebook, a kiosk, a vehicle-mounted terminal, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving, a wireless terminal in remote surgery (remote management), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety, a wireless terminal in city (city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (wireless local, personal area), a wireless station (wllocal), a wireless terminal connected to a wireless network, a wireless communication device with a function in future, a mobile communication network, a wireless communication device with a wireless modem, a wireless network, a wireless communication terminal connected to a Public Land Mobile Network (PLMN), or other mobile network, or a mobile network with a function in future.
Optionally, the calibration system may further include a control device, the control device is configured with a calibration program, and the control device may control the calibration of the terminal device based on the calibration program. For example, the control device may be connected to the terminal device 100 and the meter 300 in the calibration system, and complete the radio frequency calibration of the terminal device 100 by issuing an instruction to the terminal device 100 and the meter 300, receiving measurement data of the terminal device 100 and the meter 300, and issuing a calibration result to the terminal device 100 according to the measurement data.
It should be noted that the control device may be a server. For example, the control device may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, a cloud server providing basic cloud computing services such as a cloud service, a Content Delivery Network (CDN), a big data and artificial intelligence platform, and the like.
The calibration feedback method and the related apparatus proposed in the present application are described in detail below with reference to fig. 3 to 9.
Referring to fig. 3, fig. 3 is a schematic flowchart of a calibration method according to an embodiment of the present disclosure, where the calibration method includes steps S301 to S305. The method shown in fig. 3 can be applied to the calibration system corresponding to fig. 2A. The calibration system comprises a terminal, a coupler and a meter, wherein the terminal comprises a first antenna and a second antenna, the first antenna is an antenna with receiving and transmitting functions, the second antenna is an antenna with receiving functions, and the meter is used for measuring signal receiving power and transmitting signals; the coupler is used for coupling signals between the first antenna and the meter to the second antenna. The terminal may be the terminal device 100 described in the above, the coupler may be the coupler 200 described in the above, and the meter may be the meter 300 described in the above, wherein:
s301, the instrument transmits a first signal to the terminal, and the transmission power of the first signal is a first preset value.
In the application, the meter can transmit a first signal with a first preset power to the terminal through the connection with the coupler so as to perform receiving calibration on the first antenna of the terminal. For example, the meter may transmit a first signal through its own meter port to a pass-through port of the coupler (e.g., port B in fig. 2A), and the coupler transmits the first signal to the terminal.
Optionally, the first preset value is any power value within a preset receiver calibration power interval. According to the principle of receiving calibration, when the terminal is calibrated for receiving, the corresponding relationship between the transmission power and the receiving gain of the first signal received by the terminal needs to be adjusted. In order to adjust the corresponding relationship of each gain value in the receiving gain interval, the preset receiver calibration power interval to which the first preset value belongs should cover the receiving gain interval.
For example, if the reception gain interval is composed of a low gain interval, a middle gain interval, and a high gain interval, -25dBm to-10 dBm is the low gain interval, -50dBm to-28 dBm is the middle gain interval, and-53 dBm or less is the high gain interval, the preset receiver calibration power interval may be-60 dBm to 0dBm, and the first preset value may be a power value in the range of-60 dBm to 0dBm, when performing reception calibration on the first antenna of the terminal.
Optionally, the number of the first signals may be multiple, the first preset values of the multiple first signals cover a preset receiver calibration power interval, the first preset values of each first signal are different, and the meter transmits the multiple first signals one by one according to a sequence in which the first preset values linearly change. For example, the preset receiver calibration power interval may be-60 dBm to 0dBm, the meter may transmit a total of 31 first signals according to a step size of 2dBm, and for example, the meter may transmit first signals with powers of-60 dBm, -58dBm, -56dBm, -4dBm, -2dBm, and 0dBm in sequence according to a linear order of power values from large to small. Based on the mode, the instrument can transmit a plurality of first signals covering a preset receiver calibration power interval to the terminal, so that the requirement of covering a receiving gain interval can be met during receiving calibration, and the antenna can be completely received and calibrated subsequently. The complete receiving calibration of the antenna in the application refers to that the instrument transmits a plurality of signals covering a receiving gain interval to the antenna, and the terminal can adjust the corresponding relation between the whole receiving gain interval and the instrument transmitting power (namely the ideal power value when the terminal receives the signals) according to the plurality of signals to obtain the corresponding relation between the whole receiving gain interval and the instrument transmitting power after adjustment. It should be noted that, the present application does not limit the step size between the first preset values in the complete receiving calibration.
S302, the terminal receives a first signal through a through port of the coupler based on the first antenna and receives the first signal through a coupling port of the coupler based on the second antenna.
When a first signal transmitted by the meter is transmitted to the coupler, the coupler may transmit the first signal to a first antenna connected to one through port of the coupler (e.g., port a in fig. 2A), and a second antenna connected to a coupled port (e.g., port C in fig. 2A).
And S303, the terminal performs receiving calibration on the first antenna according to the first receiving value and a first preset value, wherein the first receiving value is the signal strength of a first signal received by the first antenna.
In this application, the first predetermined value is equivalent to an ideal power value received by the first antenna when the first signal is transmitted to the first antenna. However, due to transmission loss and the like, energy attenuation occurs when the first signal is transmitted to the first antenna, and the signal strength after the energy attenuation is the actual signal strength of the signal received by the first antenna, that is, the first received value. After determining the first receiving value, the terminal may determine a difference of a receiving gain corresponding to the first preset value according to the difference between the first receiving value and the first preset value, so as to adjust the receiving gain corresponding to the first preset value (that is, adjust a corresponding relationship between the first preset value and the receiving gain), and the receiving gain corresponding to the adjusted first preset value may enable the baseband signal amplitude of the first signal to be maintained at a constant level.
Optionally, when the instrument transmits a plurality of first signals and a first preset value of the plurality of first signals covers a preset receiver calibration power interval, the terminal may receive the plurality of first signals through the first antenna and determine a plurality of first receiving values, so as to complete receiving calibration of the first antenna. The terminal may adjust a reception gain corresponding to each first preset value based on the plurality of first reception values and the first preset value corresponding to each first reception value. After the adjustment of the receiving gain corresponding to each first preset value is completed, the corresponding relationship between each first preset value and the adjusted receiving gain of each first preset value may be written in the storage medium, so that the complete receiving calibration of the first antenna may be completed.
S304, the terminal determines the coupling loss of the second antenna according to the first receiving value and the second receiving value, the second receiving value is the signal strength of the first signal received by the second antenna, and the receiving calibration is carried out on the second antenna according to the second receiving value, the coupling loss and the first preset value.
In this embodiment, after the first signal transmitted by the meter is transmitted to the coupling port of the coupler, the signal received by the second antenna may generate energy attenuation due to transmission loss and coupling loss of the coupler, and the second received value is the signal strength of the signal received by the second antenna after the energy attenuation is generated. Since the first reception value is the signal strength of the first signal via the transmission loss, the terminal may determine the coupling loss of the coupler according to the difference between the first reception value and the second reception value. Illustratively, the coupling loss of the coupler can be determined according to the following equation 1:
loss＝RSSI 1 -RSSI 2 (formula 1)
Wherein the RSSI 1 Is the first received value, RSSI 2 And is the second received value, loss is the coupling loss.
Optionally, when the meter transmits a plurality of first signals, the terminal may determine a plurality of first received values and a plurality of second received values for the plurality of first signals, and then may determine the coupling loss according to an average value of differences between the plurality of first received values and the second received values. Alternatively, the terminal may process the plurality of first received values and the plurality of second received values, select an effective first received value and an effective second received value from the plurality of first received values and the plurality of second received values, and determine the coupling loss based on the effective first received value and the effective second received value. Valid first and second received values refer to non-mutation data and non-outlier data, and so on.
Further, the second antenna may be calibrated for reception according to the determined coupling loss, the second reception value, and the first preset value.
In a possible implementation manner, performing receive calibration on the second antenna according to the determined coupling loss and the first preset value includes: determining a difference value between the first preset value and the coupling loss as a third preset value; and carrying out receiving calibration on the second antenna according to the third preset value and the second receiving value.
In this possible implementation, the difference between the first preset value and the coupling loss is determined as a third preset value, and the third preset value corresponds to an ideal power value when the second antenna receives the first signal without transmission loss. Furthermore, the difference of the reception gain corresponding to the third preset value can be determined according to the difference between the third preset value and the second reception value, so that the reception gain corresponding to the third preset value can be adjusted.
For example, the third preset value may be determined according to the following equation 2:
P 0,2 ＝P 0,1 -loss (equation 2)
Wherein, P 0,1 The first preset value is the first preset value, namely the ideal power value when the first antenna receives the first signal under the condition that no transmission loss occurs; p 0,2 The ideal power value when the second antenna receives the first signal under the condition that no transmission loss occurs, namely, the ideal power value is the third preset value.
Optionally, when the meter transmits a plurality of first signals and a first preset value of the plurality of first signals covers a preset receiver calibration power interval, the terminal may receive the plurality of first signals through the second antenna, and determine a plurality of second received values and a third preset value corresponding to each second received value. The terminal may then adjust a reception gain corresponding to each third preset value based on the plurality of second reception values and the third preset value corresponding to each second reception value. After the adjustment of the reception gain corresponding to each third preset value is completed, the corresponding relationship between each third preset value and the adjusted reception gain of each third preset value may be written in the storage medium.
It should be noted that, because the difference between each third preset value and each first preset value received by the second antenna is the coupling loss of the coupler, the power range to which the third preset value belongs may be determined according to a preset receiver calibration power interval and the coupling loss, where the power range is the power range to which the ideal power value received by the second antenna belongs when the second antenna is calibrated by the above-mentioned process. When the power range to which the ideal power value received by the second antenna belongs covers the receiving gain interval, the complete receiving calibration of the second antenna can be realized, otherwise, only the partial receiving calibration of the second antenna can be realized.
For example, if the preset receiver calibration power interval is-60 dBm to 0dBm and the coupling loss is 20dBm, the power range to which the third preset value belongs is-80 dBm to-20 dBm, that is, the power range of the ideal power value for the second antenna to receive the first signal without transmission loss. If-25 dBm to-10 dBm is a low gain interval during receiving calibration, -50dBm to-28 dBm is a medium gain interval, and less than or equal to-53 dBm is a high gain interval, the power range of-80 dBm to-20 dBm of the ideal power value received by the second antenna can cover the medium gain interval and the high gain interval, can not cover the low gain interval, and can finish partial receiving calibration of the second antenna.
For another example, if the preset receiver calibration power interval of-60 dBm to 0dBm in the above example is adjusted to-60 dBm to 20dBm, when the coupling loss is 20dBm, the power range to which the ideal power value received by the second antenna belongs may be expanded to-80 dBm to 0dBm, which may cover the middle gain interval, the high gain interval, and the low gain interval in the above example, and implement the complete receiving calibration of the second antenna.
Therefore, the complete receiving calibration or the partial receiving calibration of the second antenna can be realized by changing the preset receiver calibration power interval to which the first preset value belongs.
S305, the terminal transmits a second signal to the instrument based on the first antenna, and the transmission power of the second signal is a second preset value.
In the application, the terminal can transmit a second signal with the power of a second preset value to the instrument through the connection with the coupler so as to perform transmission calibration on the first antenna of the terminal. For example, the terminal may transmit a second signal through the first antenna to a through port of the coupler (e.g., port a in fig. 2A) and the coupler may transmit the second signal to the meter. When the first antenna transmits the second signal to the instrument, the transmitting power of the second signal can be controlled based on the corresponding relation between the control voltage and the transmitting power, so that the transmitting power of the second signal is a second preset value, and the second preset value is equivalent to the ideal transmitting power of the second signal.
Optionally, the second preset value is any power value within a preset transmitter calibration power interval, and the preset transmitter calibration power interval conforms to the 3GPP2 standard. For example, the default transmitter calibration may be between-43 dBm and 27dBm, and the second default value may be a power value in the range of-43 dBm and 27 dBm.
Optionally, the number of the second signals may be multiple, the second preset values of the multiple second signals cover a preset transmitter calibration power interval, the second preset values of each second signal are different, and the second antenna of the terminal transmits the multiple second signals one by one according to a sequence in which the second preset values linearly change. For example, the second antenna may transmit 35 second signals in 2dBm steps, and for example, the second antenna of the terminal may sequentially transmit second signals with powers of 27dBm, 25dBm, 23dBm, ·, -41dBm, and-43 dBm in a linear descending order of power values. Based on the mode, the terminal can transmit a plurality of second signals covering a preset transmitter calibration power interval to the instrument, and therefore the complete transmission calibration of the first antenna can be achieved subsequently. The complete transmission calibration of the antenna in the application refers to that the antenna transmits a plurality of signals of a preset transmitter power interval, and the terminal can adjust the corresponding relation between the whole preset transmitter power interval and the control voltage according to the plurality of signals to obtain the corresponding relation between the whole preset transmitter power interval and the control voltage after adjustment. It should be noted that, the present application does not limit the step size between the second preset values in the complete receiving calibration.
S306, the terminal conducts transmission calibration on the first antenna according to a third receiving value and a second preset value, wherein the third receiving value is the signal strength of a second signal received by the instrument.
When the second signal transmitted by the first antenna is transmitted to the coupler, the coupler may transmit the second signal to a meter port connected to one pass-through port of the coupler (e.g., port B in fig. 2A). The meter port may measure the signal strength of the second signal and determine a third received value, which corresponds to the actual transmit power of the second signal.
According to the third receiving value and the second preset value determined by the instrument, the terminal can adjust the corresponding relation between the transmitting power and the control voltage so as to realize the transmitting calibration of the first antenna. For example, if the second preset value is 25dBm, the control voltage corresponding to the second preset value of 25dBm is X, and the third receiving value is 23dBm, the correspondence relationship between the transmission power of 25dBm and the control voltage X is adjusted to the correspondence relationship between 23dBm and the control voltage X.
Optionally, when the first antenna transmits a plurality of second signals and a second preset value of the plurality of second signals covers a preset transmitter calibration power interval, the meter may receive the plurality of second signals and measure a plurality of third received values; the terminal may complete the calibration of the transmission of the first antenna based on the plurality of third received values and the second preset value corresponding to each third received value.
Based on steps S305 to S306, a complete transmission calibration for the first antenna may be completed.
Based on the embodiment described in fig. 3, the present application may use a coupler to couple signals between the first antenna and the meter to the second antenna, thereby performing the transmission calibration and the reception calibration of the first antenna and the reception calibration of the second antenna. Because the coupling degree of the coupler is determined by the coupling loss which is usually far larger than the dynamic change range of the load impedance, the coupler can be used for reducing the influence caused by the dynamic change of the load impedance and improving the accuracy of radio frequency calibration. Meanwhile, the connection of one port of the instrument and two transmission paths of the first antenna and the second antenna can be completed through the connection of the through port of the coupler and the instrument, the occupation of the port of the instrument is reduced, and the calibration efficiency is improved.
Referring to fig. 4, fig. 4 is a schematic flowchart of another calibration method provided in the embodiment of the present application, where the method includes steps S401 to S408. The method shown in fig. 4 can be applied to the calibration system, and complete transmission calibration and complete reception calibration of the first antenna and complete reception calibration of the second antenna can be completed. Wherein:
s401, the instrument transmits a first signal to the terminal, and the transmission power of the first signal is a first preset value.
S402, the terminal receives a first signal through a through port of the coupler based on the first antenna and receives the first signal through a coupling port of the coupler based on the second antenna.
And S403, the terminal performs receiving calibration on the first antenna according to the first receiving value and the first preset value.
S404, the terminal determines the coupling loss of the second antenna according to the first receiving value and the second receiving value, the second receiving value is the signal strength of the first signal received by the second antenna, and the second antenna is subjected to receiving calibration according to the second receiving value, the coupling loss and the first preset value.
S405, the terminal transmits a second signal to the instrument based on the first antenna, and the transmission power of the second signal is a second preset value.
S406, the terminal conducts emission calibration on the first antenna according to a third receiving value and a second preset value, wherein the third receiving value is the signal intensity of a second signal received by the instrument.
The specific implementation manners of S401 to S406 may refer to the specific implementation manners of S301 to S306, which are not described herein again. If only the complete transmission calibration and the complete reception calibration of the first antenna and the partial reception calibration of the second antenna are completed based on S401 to S406, calibration can be performed in the uncalibrated power range in the complete reception calibration of the second antenna based on S407 to S408, so as to achieve the complete reception calibration of the second antenna.
And S407, the terminal receives the second signal transmitted by the first antenna through the coupling port of the coupler based on the second antenna.
In this application, when the second signal transmitted by the first antenna is transmitted to the coupler, the coupler may transmit the second signal to a meter connected to one of the through ports of the coupler to complete the calibration of the transmission of the first antenna. Meanwhile, since the coupler couples the second signal to the coupling port, the second antenna connected to the coupling port can also receive the second signal transmitted by the first antenna.
S408, the terminal performs receiving calibration on the second antenna according to the coupling loss, a fourth receiving value and a second preset value, wherein the fourth receiving value is the signal strength of the second signal received by the second antenna.
In a possible implementation manner, a specific implementation manner of the terminal executing S408 includes: the terminal determines the difference value between the second preset value and the coupling loss as a fourth preset value; and carrying out receiving calibration on the second antenna according to a fourth preset value and a fourth receiving value.
In this possible implementation, the difference between the second preset value and the coupling loss is determined as a fourth preset value, and the fourth preset value corresponds to an ideal power value when the second antenna receives the second signal without the transmission loss. For example, the fourth preset value may be determined according to the following equation 3:
P 1,2 ＝P 1,1 -loss (equation 3)
Wherein, P 1, The second preset value is set; p 12 The ideal power value when the second antenna receives the second signal without transmission loss, i.e. the fourth preset value.
Further, a difference of the reception gain corresponding to the fourth preset value may be determined according to a difference between the fourth reception value and the determined fourth preset value, so as to adjust the reception gain corresponding to the fourth preset value.
Optionally, when the first antenna transmits a plurality of second signals and a second preset value of the plurality of second signals covers a preset transmitter calibration power interval, the terminal may receive the plurality of second signals through the second antenna, and determine a plurality of fourth receiving values and a fourth preset value corresponding to the plurality of fourth receiving values. The terminal may then adjust a reception gain corresponding to each fourth preset value based on the plurality of fourth reception values and the fourth preset value corresponding to each fourth reception value. After the adjustment of the reception gain corresponding to each fourth preset value is completed, the corresponding relationship between each fourth preset value and the adjusted reception gain of each fourth preset value may be written in the storage medium.
It should be noted that the power range to which the fourth preset value belongs may be determined according to a preset transmitter calibration power interval and coupling loss, where the power range is a power range for calibrating the second antenna by the above procedure. For example, if the preset calibration power interval of the transmitter is-43 dBm to 27dBm and the coupling loss is 20dBm, the power range to which the fourth preset value belongs is-63 dBm to-7 dBm, that is, the power range of the ideal power value for receiving the second signal by the second antenna without transmission loss. If-25 dBm-10 dBm is a low gain interval during receiving calibration, -50 dBm-28 dBm is a medium gain interval, and less than or equal to-53 dBm is a high gain interval, the power range of-63 dBm-7 dBm of the ideal power value received by the second antenna can cover three gain intervals of low, medium and high, and the method can finish the complete receiving calibration of the second antenna. Since the partial receiving calibration is also performed on the second antenna when the complete receiving calibration is performed on the first antenna, the previous partial receiving calibration can be re-calibrated in this step, and the accuracy of the calibration is improved.
Optionally, for the data repeatedly measured during the two times of receiving calibration of the second antenna, the data with higher quality may be selected to perform calibration operation, so as to improve the accuracy of calibration.
Optionally, if the preset receiver calibration power interval is not covered after the two times of receiving calibration of the second antenna, the corresponding relationship between the uncovered power value and the receiving gain may also be calibrated separately. For example, when invalid data is measured in-55 dBm to-50 dBm or data measured in-55 dBm to-50 dBm is lost during two times of calibration, the instrument or the first antenna can be adopted again to emit signals of-35 dBm to-30 dBm so as to finish the calibration of the corresponding relation in the range of-55 dBm to-50 dBm.
Based on S401 to S408, the present application may utilize the coupler to perform transmit calibration on the first antenna and perform receive calibration on the second antenna again at the same time, thereby implementing complete transmit calibration and complete receive calibration on the first antenna and complete receive calibration on the second antenna, and the method may effectively improve calibration efficiency.
In addition to performing S407-S408, in another possible implementation manner, the following procedure may be performed to calibrate the uncalibrated receiver power range during the second antenna reception calibration. For example, when the second antenna is calibrated for reception in S404, a power range of an ideal power value for the second antenna to receive the first signal without transmission loss, that is, a receiver power range in which the second antenna has been calibrated, may be determined according to a preset receiver calibration power interval and coupling loss; the uncalibrated receiver power range for the second antenna may be determined from the calibrated receiver power range for the second antenna and calibrated separately. For example, if the coupling loss is 20dBm, the calibrated receiver power range of the second antenna is-80 dBm to-20 dBm, and the preset receiver calibration power interval is-60 dBm to 0dBm, the power range of-20 dBm to 0dBm can be calibrated independently. When the power range of-20 dBm to 0dBm is calibrated, a meter or the first antenna can be used for emitting 0dBm to 20dBm, and then the calibration work for the receiver power range of which the second antenna is not calibrated can be completed.
It should be noted that, for the embodiments corresponding to fig. 3 and fig. 4, in actual application, the terminal and the meter may upload the measured values (such as the first receiving value, the second receiving value, and the like) to the control device in the calibration system, and the control device performs calibration operation according to the measured data and preset data (such as the first preset value, and the like), and sends the result of the calibration operation to the terminal.
Illustratively, the operations involved in the above steps S303 to S304, S306 may be performed by the control device. For example, the specific implementation manner of the terminal performing the receiving calibration on the first antenna according to the first receiving value and the first preset value in step S303 includes: the terminal sends the first receiving value and the first preset value to the control device, the control device determines the difference of receiving gain corresponding to the first preset value based on the difference between the first receiving value and the first preset value, so that the receiving gain corresponding to the first preset value is adjusted, and finally the control device sends the adjusted receiving gain corresponding to the first preset value to the terminal for storage. For another example, in step S304, the specific implementation manner of determining, by the terminal, the coupling loss of the second antenna according to the first receiving value and the second receiving value, and performing the receiving calibration on the second antenna according to the second receiving value, the coupling loss, and the first preset value includes: the terminal sends the first receiving value, the second receiving value and the first preset value to the control device, the control device determines the decoupling loss according to the received first receiving value and the received second receiving value, determines the third preset value according to the difference value between the first preset value and the coupling loss, and determines the difference of the receiving gain corresponding to the third preset value according to the difference between the third preset value and the second receiving value, so that the receiving gain corresponding to the third preset value is adjusted. And finally, sending the receiving gain corresponding to the adjusted third preset value to the terminal for storage. For another example, the specific implementation manner of the terminal performing the transmission calibration on the first antenna according to the third received value and the second preset value in step S306 includes: and the control equipment adjusts the corresponding relation between the transmitting power and the control voltage based on the third receiving value and the second preset value, and sends the adjusted corresponding relation to the terminal for storage.
In addition, in a possible implementation manner, before S301 or S401, the foregoing embodiment further includes: the terminal receives a first calibration instruction; and the terminal responds to the first calibration instruction and transmits a first uplink synchronization signal to the instrument. The first uplink synchronous signal is used for indicating the instrument to start a signal transmitting function.
Optionally, the first uplink synchronization signal may also be used to indicate that the first antenna and the second antenna of the terminal are in a ready state, where the ready state indicates that the first antenna and the second antenna may receive a signal transmitted by the meter.
In a possible implementation manner, after S304 and before S305, or after S404 and before S405, the foregoing embodiment further includes: the terminal receives a second calibration instruction; and transmitting a second uplink synchronous signal to the meter in response to the second calibration instruction, wherein the second uplink synchronous signal is used for indicating the meter to be switched from a signal transmitting function to a signal receiving function. Since the meter is in the state of the signal transmitting function before S304 or S404, but the first antenna needs to be calibrated for transmission, the meter needs to switch the state of the signal transmitting function to the signal receiving function, and therefore a second uplink synchronization signal needs to be transmitted to the meter, so that the meter performs function switching after receiving the second uplink synchronization signal.
Optionally, the second uplink synchronization signal may also be used to indicate that the first antenna of the terminal is in a ready state, and may transmit a signal; and the second antenna is ready to receive signals.
The flow of the embodiment of fig. 4 in practical use will be illustrated by fig. 5. Referring to fig. 5, fig. 5 is a schematic flowchart of another calibration method according to an embodiment of the present disclosure, where the method includes steps S501 to S511. The method shown in fig. 5 can be applied to a calibration system, the calibration system includes a terminal, a coupler, a meter and a control device, the terminal includes an antenna 1 and an antenna 2, the antenna 1 has a function of transmitting and receiving signals, the antenna 2 has a function of receiving signals, the terminal can be the terminal device 100 described in the above, the antenna 1 can be the antenna 101 or the first antenna described in the above, the antenna 2 can be the antenna 102 or the second antenna described in the above, the coupler can be the coupler 200 described in the above, the meter can be the meter 300 described in the above, the control device can be the control device described in the above, the control device is configured with a calibration program, and the calibration of the terminal device can be completed based on the control of the calibration program.
S501, the control equipment issues ready commands of the antenna 1 and the antenna 2, and the antenna 1 transmits uplink synchronous signals.
The ready instruction sent by the control device to the antenna 1 and the antenna 2 means that the control device calls a calibration program to send the ready instruction to the antenna 1 and the antenna 2. For example, the ready command may be the first calibration command described in the above, and the uplink synchronization signal transmitted by the antenna 1 may be the first uplink synchronization signal described in the above.
And S502, the instrument judges whether the uplink synchronous signal of the antenna 1 is acquired.
After the meter acquires the uplink synchronization signal of the antenna 1, it indicates that the antenna 1 and the antenna 2 are ready, that is, the signal transmitted by the meter can be received, and then S503 to S510 may be executed. And when the meter does not acquire the uplink synchronization signal of the antenna 1, executing S511.
Optionally, the effective time for the instrument to acquire the uplink synchronization signal of the antenna 1 may be set, and if the uplink synchronization signal of the antenna 1 is not acquired within the effective time, the step S501 may be executed again after the step S511, that is, the antenna 1 is instructed again to transmit the uplink synchronization signal, and so on.
S503, configuring a power frame with the linear change of the intensity covering the gain interval of the receiver by the instrument and issuing the power frame by using a signal generation function.
The receiver gain interval is also the reception gain interval in the above description, for example, the receiver gain interval may include a low gain interval, a medium gain interval, and a high gain interval. The power frame covering the gain interval of the receiver with the linear variation of the intensity is the first signal with the transmission power of the first preset value as described in the above. And the receiver gain interval can be configured into the meter by the control device through a calibration procedure.
S504, the antenna 1 records the frame-by-frame signal intensity, the antenna 2 records the frame-by-frame signal intensity, and data are reported to a calibration program.
In the present application, the antenna 1 records the frame-by-frame signal strength as the first reception value described in the above, and the antenna 2 records the frame-by-frame signal strength as the second reception value described in the above. After determining the first received value and the second received value, the antennas 1 and 2 may be reported to the control device where the calibration procedure is located.
And S505, the control equipment compares the frame sent by the calculation instrument with the terminal measurement data, receives and calibrates the antenna 1, compares the signal intensity sequence acquired by the antenna 2 to calculate the coupling loss, and receives and calibrates the antenna 2.
The meter sends down a frame as a first signal with the transmitting power being a first preset value in S503, and the terminal measurement data is the frame-by-frame signal strength recorded by the antennas 1 and 2 in S504, that is, a first receiving value and a second receiving value. After the control device receives the first preset value, the first receiving value and the second receiving value, the antenna 1 may be subjected to receiving calibration according to the first preset value and the first receiving value; determining a coupling loss according to the first received value and the second received value; and carrying out receiving calibration on the antenna 2 according to the coupling loss, the first preset value and the second receiving value.
S506, the control equipment issues ready instructions of the antenna 1 and the antenna 2, and the antenna 1 transmits uplink synchronous signals.
After the complete reception calibration of the antenna 1 and the partial reception calibration of the antenna 2 are completed, the first antenna may be subjected to transmission calibration and the like through subsequent steps. In this case, the operating states of the antenna 1 and the meter need to be switched.
Wherein, the control device can send the ready instruction to the antenna 1 and the antenna 2 again, so that the antenna 1 sends the uplink synchronization signal to the meter. For example, the ready command in this step may be the second calibration command described in the above, and the uplink synchronization signal in this step may be the second uplink synchronization signal described in the above.
And S507, the instrument judges whether the uplink synchronous signal of the antenna 1 is acquired.
After the meter acquires the uplink synchronization signal sent by the antenna 1 via S506, it indicates that the antenna 1 and the antenna 2 are ready, that is, the antenna 1 can transmit a signal at any time and the antenna 2 can receive the signal, in which case S508 to S510 can be executed. And when the meter does not acquire the uplink synchronization signal of the antenna 1, executing S511.
And S508, an antenna 1 is matched with an uplink transmitting power sequence, the power is linearly reduced frame by frame, an instrument measures and records the uplink transmitting power value of the terminal, and an antenna 2 records the signal strength data frame by frame and reports the data to a calibration program.
The transmission power sequence is a plurality of second signals of which the second preset values introduced in the above contents are preset transmitter calibration power intervals, and the second preset values are transmission powers of the second signals; the linear decrease of the power of the antenna 1 from frame to frame means that the second preset value of the signal transmitted by the antenna 1 is linearly decreased. The uplink transmission power value of the terminal measured by the meter is the third receiving value introduced in the above description, and the frame-by-frame signal strength data recorded by the antenna 2 is the fourth receiving value introduced in the above description. The meter and antenna 2 may report the third and fourth received values to the control device where the calibration procedure is located.
S509, the control device obtains data and stores the data in the terminal, and whether the data transmitted by the antenna 1 and received by the antenna 2 meet expectations is judged.
The control device may invoke a calibration program to process the third received value, the fourth received value, and the second preset value to complete the complete transmission calibration of the antenna 1 and the reception calibration of the antenna 2. And when calibration is performed, judging whether the calibration data transmitted by the antenna 1 and received by the antenna 2 meet expectations or not means judging whether the calibration of the antenna 1 and the antenna 2 covers a preset receiver calibration power interval and a preset transmitter calibration power interval.
If the antenna 1 transmit calibration and the antenna 2 receive calibration data meet expectations, S510 may be performed. Otherwise, S506 and subsequent steps may be performed again to perform transmit calibration for antenna 1 and receive calibration for antenna 2 again.
And S510, storing the calibration data.
After determining that the calibration is completed and the expectation is met, the control device may issue the calibration data to the terminal, and the terminal stores the calibration data in the storage medium.
And S511, abnormal stop of calibration.
It should be noted that the specific implementation processes of S501 to S509 may refer to the corresponding descriptions in the embodiment of the manner corresponding to fig. 3 or fig. 4, and are not repeated again.
It will be appreciated that in order to implement the functions of the above embodiments, each of the electronic devices (e.g., terminals, meters, and control devices) in the calibration system includes corresponding hardware structures and/or software modules for performing each function. Those of skill in the art will readily appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is performed as hardware or computer software driven hardware depends on the particular application scenario and design constraints imposed on the solution.
Referring to fig. 6, which is a schematic structural diagram of a communication device provided in an embodiment of the present application, the communication device 60 includes a receiving unit 601, a processing unit 602, and a transmitting unit 603.
In one embodiment, the communication device 60 may be an electronic device in the calibration system or a device for an electronic device, which may be a terminal or a meter or a control device. The apparatus for an electronic device may be a system of chips or a chip within the electronic device. The chip system may be composed of a chip, or may include a chip and other discrete devices. Wherein:
a receiving unit 601, configured to receive a first signal transmitted by a meter through a through port of a coupler based on a first antenna, and receive the first signal through a coupled port of the coupler based on a second antenna; the transmitting power of the first signal is a first preset value;
a processing unit 602, configured to perform receive calibration on the first antenna according to a first receive value and the first preset value, where the first receive value is a signal strength of the first signal received by the first antenna;
the processing unit 602 is further configured to determine a coupling loss of the second antenna according to the first receiving value and a second receiving value, where the second receiving value is a signal strength of the first signal received by the second antenna, and perform receive calibration on the second antenna according to the second receiving value, the coupling loss, and the first preset value;
a transmitting unit 603 for transmitting a second signal to the meter through the through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value;
the processing unit 602 is further configured to perform transmission calibration on the first antenna according to a third received value and the second preset value, where the third received value is the signal strength of the second signal received by the meter.
In a possible implementation manner, the transmitting unit 603 is further configured to receive, based on the second antenna, the second signal transmitted by the first antenna through a coupling port of the coupler; the receiving unit 601 is further configured to perform receiving calibration on the second antenna according to the coupling loss, a fourth receiving value and the second preset value, where the fourth receiving value is the signal strength of the second signal received by the second antenna.
In a possible implementation manner, when performing receive calibration on the second antenna according to the second receive value, the coupling loss, and the first preset value, the processing unit 602 is specifically configured to: determining a difference value between the first preset value and the coupling loss as a third preset value; the first preset value is any power value in a preset receiver calibration power interval; and carrying out receiving calibration on the second antenna according to the third preset value and the second receiving value.
In a possible implementation manner, when performing receive calibration on the second antenna according to the coupling loss, the fourth receive value, and the second preset value, the processing unit 602 is specifically configured to: determining a difference value between the second preset value and the coupling loss as a fourth preset value; the second preset value is any power value in a preset transmitter calibration power interval; and carrying out receiving calibration on the second antenna according to the fourth preset value and the fourth receiving value.
In a possible implementation manner, the receiving unit 601 is further configured to receive a first calibration instruction before receiving a first signal transmitted by the meter through a through port of the coupler based on the first antenna; the processing unit 602 is further configured to transmit a first uplink synchronization signal to the meter in response to the first calibration instruction, where the first uplink synchronization signal is used to instruct the meter to start a signal transmission function.
In a possible implementation manner, the receiving unit 601, after performing receive calibration on the second antenna according to the second received value, the coupling loss, and the first preset value, is further configured to receive a second calibration instruction before transmitting a second signal to the meter through the through port of the coupler based on the first antenna; the processing unit 602 is further configured to transmit a second uplink synchronization signal to the meter in response to the second calibration instruction, where the second uplink synchronization signal is used to instruct the meter to switch from a signal transmitting function to a signal receiving function.
Specifically, the operations performed by the units of the communication device 60 shown in fig. 6 may refer to the related contents in the above method embodiments, and are not described in detail here. The above units can be implemented in hardware, software or a combination of hardware and software. In one embodiment, the functions of the various units described above may be implemented by one or more processors in the communication device 60.
Fig. 7 is a schematic structural diagram of another communication apparatus provided in the embodiment of the present application, which is used for implementing the contents in the foregoing method embodiment. The communication means may be an electronic device in the calibration system or a device for an electronic device, which may be a terminal or a meter or a control device. The means for the electronic device may be a system of chips or a chip within the electronic device. The chip system may be composed of a chip, or may include a chip and other discrete devices.
The communication apparatus 70 includes at least one processor 702 for implementing the noise estimation function of the electronic device in the method provided by the embodiment of the present application. The communication apparatus 70 may further include a communication interface 701, configured to implement transceiving operations of an electronic device in the method provided in this embodiment. In embodiments of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, communication interface 701 is used for devices in communication device 70 to communicate with other devices. The processor 702 is configured to send and receive data using the communication interface 701 and is configured to implement the methods described in the above-described method embodiments.
The communication device 70 may also include at least one memory 703 for storing program instructions and/or data. The memory 703 is coupled to the processor 702. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The processor 702 may cooperate with the memory 703. The processor 702 may execute program instructions stored in the memory 703. At least one of the at least one memory may be included in the processor.
When the communication device 70 is powered on, the processor 702 can read the software program in the memory 703, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 702 performs baseband processing on the data to be sent, and outputs a baseband signal to a radio frequency circuit (not shown), and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through an antenna. When data is transmitted to the communication device 70, the rf circuit receives an rf signal through the antenna, converts the rf signal into a baseband signal, and outputs the baseband signal to the processor 702, and the processor 702 converts the baseband signal into data and processes the data.
In another implementation, the rf circuitry and antenna may be provided independently of the processor 702 performing baseband processing, for example in a distributed scenario, the rf circuitry and antenna may be in a remote arrangement independent of the communication device.
In the embodiment of the present application, the specific connection medium among the communication interface 701, the processor 702, and the memory 703 is not limited. In the embodiment of the present application, the memory 703, the processor 702, and the communication interface 701 are connected by the bus 704 in fig. 7, the bus is represented by a thick line in fig. 7, and the connection manner between other components is merely schematic illustration and is not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus.
When the communication device 70 is specifically used in an electronic device, for example, when the communication device 70 is specifically a chip or a chip system, the output or the reception of the communication interface 701 may be a baseband signal or a radio frequency signal. In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, operations, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The operations of the methods disclosed in connection with the embodiments of the present application may be directly performed by a hardware processor, or may be performed by a combination of hardware and software modules in a processor.
It should be noted that, the communication device may perform the relevant steps in the foregoing method embodiments, which may specifically refer to the implementation manners provided in the foregoing steps, and details are not described herein again.
For each device or product applied to or integrated in the communication device, each module included in the device or product may be implemented by hardware such as a circuit, different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least a part of the modules may be implemented by a software program running on a processor integrated in the terminal, and the rest (if any) of the modules may be implemented by hardware such as a circuit.
For the case that the communication device may be a chip or a system of chips, reference may be made to the schematic structure of the chip shown in fig. 8. The chip 80 includes a processor 801 and a communication interface 802. The number of the processors 801 may be one or more, and the number of the communication interfaces 802 may be more.
In one embodiment, the processor 801 is configured to perform the following operations:
receiving a first signal transmitted by a meter through a through port of a coupler based on a first antenna, and receiving the first signal through a coupling port of the coupler based on a second antenna; the transmitting power of the first signal is a first preset value;
performing receiving calibration on the first antenna according to a first receiving value and the first preset value, wherein the first receiving value is the signal strength of the first signal received by the first antenna;
determining a coupling loss of the second antenna according to the first receiving value and a second receiving value, wherein the second receiving value is the signal strength of the first signal received by the second antenna, and performing receiving calibration on the second antenna according to the second receiving value, the coupling loss and the first preset value;
transmitting a second signal to the meter through a pass-through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value;
and carrying out emission calibration on the first antenna according to a third receiving value and the second preset value, wherein the third receiving value is the signal strength of the second signal received by the instrument.
In one possible implementation, the processor 801 is further configured to perform the following operations: receiving the second signal transmitted by the first antenna through a coupling port of the coupler based on the second antenna; and performing receiving calibration on the second antenna according to the coupling loss, a fourth receiving value and the second preset value, wherein the fourth receiving value is the signal strength of the second signal received by the second antenna.
In one possible implementation, the processor 801 is configured to, when performing receive calibration on the second antenna according to the second receive value, the coupling loss, and the first preset value, perform the following operations: determining a difference value between the first preset value and the coupling loss as a third preset value; the first preset value is any power value in a preset receiver calibration power interval; and carrying out receiving calibration on the second antenna according to the third preset value and the second receiving value.
In one possible implementation, the processor 801, in calibrating the reception of the second antenna according to the coupling loss, the fourth reception value, and the second preset value, is configured to: determining a difference value between the second preset value and the coupling loss as a fourth preset value; the second preset value is any power value in a preset transmitter calibration power interval; and carrying out receiving calibration on the second antenna according to the fourth preset value and the fourth receiving value.
In one possible implementation, the processor 801 is further configured to, before receiving the first signal transmitted by the meter through the pass-through port of the coupler based on the first antenna, perform the following operations: receiving a first calibration instruction; and responding to the first calibration instruction, and transmitting a first uplink synchronous signal to the instrument, wherein the first uplink synchronous signal is used for indicating the instrument to start a signal transmitting function.
In one possible implementation, after calibrating the second antenna for reception according to the second reception value, the coupling loss, and the first preset value, the processor 801 is further configured to, before transmitting a second signal to the meter through the through port of the coupler based on the first antenna, perform the following operations: receiving a second calibration instruction; and transmitting a second uplink synchronous signal to the meter in response to the second calibration instruction, wherein the second uplink synchronous signal is used for indicating the meter to be switched from a signal transmitting function to a signal receiving function.
For each device and product applied to or integrated into a chip, each module included in the device and product may be implemented by hardware such as a circuit, or at least a part of the modules may be implemented by a software program, where the software program runs on the processor 801 integrated inside the chip, and the rest (if any) part of the modules may be implemented by hardware such as a circuit.
Fig. 9 is a schematic structural diagram of a module device according to an embodiment of the present application. The modular apparatus 90 may perform the steps associated with the method embodiments described above, the modular apparatus 90 comprising: a communication module 901, a power module 902, a memory module 903 and a chip module 904.
The power module 902 is configured to provide power for the module device; the storage module 903 is used for storing data and instructions; the communication module 901 is used for performing internal communication of a module device, or for performing communication between the module device and an external device.
In one embodiment, the chip module 904 is configured to:
receiving a first signal transmitted by a meter through a through port of a coupler based on a first antenna, and receiving the first signal through a coupling port of the coupler based on a second antenna; the transmitting power of the first signal is a first preset value;
performing receiving calibration on the first antenna according to a first receiving value and the first preset value, wherein the first receiving value is the signal strength of the first signal received by the first antenna;
determining a coupling loss of the second antenna according to the first receiving value and a second receiving value, wherein the second receiving value is the signal strength of the first signal received by the second antenna, and performing receiving calibration on the second antenna according to the second receiving value, the coupling loss and the first preset value;
transmitting a second signal to the meter through a pass-through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value;
and carrying out emission calibration on the first antenna according to a third receiving value and the second preset value, wherein the third receiving value is the signal strength of the second signal received by the instrument.
In a possible implementation manner, the chip module 904 is further configured to: receiving the second signal transmitted by the first antenna through a coupling port of the coupler based on the second antenna; and performing receiving calibration on the second antenna according to the coupling loss, a fourth receiving value and the second preset value, wherein the fourth receiving value is the signal strength of the second signal received by the second antenna.
In a possible implementation manner, when performing receive calibration on the second antenna according to the second receive value, the coupling loss, and the first preset value, the chip module 904 is specifically configured to: determining a difference value between the first preset value and the coupling loss as a third preset value; the first preset value is any power value in a preset receiver calibration power interval; and carrying out receiving calibration on the second antenna according to the third preset value and the second receiving value.
In a possible implementation manner, when performing receive calibration on the second antenna according to the coupling loss, the fourth receive value, and the second preset value, the chip module 904 is specifically configured to: determining a difference value between the second preset value and the coupling loss as a fourth preset value; the second preset value is any power value in a preset transmitter calibration power interval; and carrying out receiving calibration on the second antenna according to the fourth preset value and the fourth receiving value.
In a possible implementation manner, the chip module 904, before receiving the first signal transmitted by the meter through the through port of the coupler based on the first antenna, is further configured to: receiving a first calibration instruction; and responding to the first calibration instruction, and transmitting a first uplink synchronous signal to the instrument, wherein the first uplink synchronous signal is used for indicating the instrument to start a signal transmitting function.
In a possible implementation manner, after calibrating the reception of the second antenna according to the second reception value, the coupling loss, and the first preset value, the chip module 904, before transmitting a second signal to the meter through the through port of the coupler based on the first antenna, is further configured to: receiving a second calibration instruction; and responding to the second calibration instruction, and transmitting a second uplink synchronous signal to the meter, wherein the second uplink synchronous signal is used for indicating the meter to be switched from a signal transmitting function to a signal receiving function.
For each device and product applied to or integrated in the chip module, each module included in the device and product may be implemented by using hardware such as a circuit, and different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules may be implemented by using a software program running on a processor integrated in the chip module, and the rest (if any) of the modules may be implemented by using hardware such as a circuit.
Embodiments of the present application further provide a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium is executed on a processor, the method flow of the above method embodiments is implemented.
Embodiments of the present application also provide a computer program or a computer program product, which includes code or instructions, when the code or instructions are run on a computer, causes the computer to execute the method as the above method embodiments.
It is noted that, for simplicity of explanation, the foregoing method embodiments are described as a series of acts or combination of acts, but those skilled in the art will appreciate that the present application is not limited by the order of acts, as some acts may, in accordance with the present application, occur in other orders and/or concurrently. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required for this application.
The descriptions of the embodiments provided in the present application may refer to each other, and the descriptions of the embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments. For convenience and brevity of description, for example, the functions and operations performed by the devices and apparatuses provided in the embodiments of the present application may refer to the related descriptions of the method embodiments of the present application, and may also be referred to, combined with or cited among the method embodiments and the device embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. A calibration method, wherein the method is applied to a calibration system, the calibration system comprises a terminal, a coupler and a meter, the terminal comprises a first antenna and a second antenna, the first antenna is an antenna with receiving and transmitting functions, the second antenna is an antenna with receiving functions, and the meter is used for measuring signal receiving power and transmitting signals; the coupler is used for coupling signals between the first antenna and the instrument to the second antenna; the method comprises the following steps:
receiving a first signal transmitted by the meter through a through port of the coupler based on the first antenna, receiving the first signal through a coupled port of the coupler based on the second antenna; the transmitting power of the first signal is a first preset value;
performing receiving calibration on the first antenna according to a first receiving value and the first preset value, wherein the first receiving value is the signal strength of the first signal received by the first antenna;
determining a coupling loss of the second antenna according to the first receiving value and a second receiving value, wherein the second receiving value is the signal strength of the first signal received by the second antenna, and performing receiving calibration on the second antenna according to the second receiving value, the coupling loss and the first preset value;
transmitting a second signal to the meter through a pass-through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value;
and carrying out emission calibration on the first antenna according to a third receiving value and the second preset value, wherein the third receiving value is the signal strength of the second signal received by the instrument.
2. The method of claim 1, further comprising:
receiving the second signal transmitted by the first antenna through a coupling port of the coupler based on the second antenna;
and performing receiving calibration on the second antenna according to the coupling loss, a fourth receiving value and the second preset value, wherein the fourth receiving value is the signal strength of the second signal received by the second antenna.
3. The method according to claim 1 or 2, wherein the performing receive calibration on the second antenna according to the second receive value, the coupling loss and the first preset value comprises:
determining a difference value between the first preset value and the coupling loss as a third preset value; the first preset value is any power value in a preset receiver calibration power interval;
and carrying out receiving calibration on the second antenna according to the third preset value and the second receiving value.
4. The method of claim 2, wherein the receive calibration of the second antenna based on the coupling loss, a fourth receive value, and the second preset value comprises:
determining a difference value between the second preset value and the coupling loss as a fourth preset value; the second preset value is any power value in a preset transmitter calibration power interval;
and carrying out receiving calibration on the second antenna according to the fourth preset value and the fourth receiving value.
5. The method of claim 1 or 2, wherein prior to receiving a first signal transmitted by the meter through the pass-through port of the coupler based on the first antenna, further comprising:
receiving a first calibration instruction;
and responding to the first calibration instruction, and transmitting a first uplink synchronous signal to the instrument, wherein the first uplink synchronous signal is used for indicating the instrument to start a signal transmitting function.
6. The method of claim 5, wherein after the receiver calibrating the second antenna according to the second received value, the coupling loss, and the first preset value, and prior to transmitting a second signal to the meter through the pass-through port of the coupler based on the first antenna, further comprising:
receiving a second calibration instruction;
and transmitting a second uplink synchronous signal to the meter in response to the second calibration instruction, wherein the second uplink synchronous signal is used for indicating the meter to be switched from a signal transmitting function to a signal receiving function.
7. A communication apparatus, characterized in that it comprises means for implementing the method of any of claims 1-6.
8. A communication device, comprising a processor and a transceiver;
the communication interface is used for receiving or sending signals;
the processor configured to perform the method of any one of claims 1-6.
9. The communications apparatus of claim 8, the communications apparatus further comprising a memory:
the memory for storing a computer program;
the processor, in particular for invoking the computer program from the memory, causes the communication device to perform the method of any of claims 1-6.
10. A chip, wherein the chip is configured to receive a first signal transmitted by a meter through a through port of a coupler based on a first antenna, and to receive the first signal through a coupled port of the coupler based on a second antenna; the transmitting power of the first signal is a first preset value;
the chip is further configured to perform receive calibration on the first antenna according to a first receive value and the first preset value, where the first receive value is a signal strength of the first signal received by the first antenna;
the chip is further configured to determine a coupling loss of the second antenna according to the first receiving value and a second receiving value, where the second receiving value is a signal strength of the first signal received by the second antenna, and perform receive calibration on the second antenna according to the second receiving value, the coupling loss, and the first preset value;
the chip is further used for transmitting a second signal to the meter through a through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value;
the chip is further configured to perform transmission calibration on the first antenna according to a third received value and the second preset value, where the third received value is the signal strength of the second signal received by the instrument.
11. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:
the power supply module is used for providing electric energy for the module equipment;
the storage module is used for storing data and instructions;
the communication module is used for carrying out internal communication of module equipment or is used for carrying out communication between the module equipment and external equipment;
the chip module is used for: receiving a first signal transmitted by a meter through a through port of a coupler based on a first antenna, and receiving the first signal through a coupling port of the coupler based on a second antenna; the transmitting power of the first signal is a first preset value; performing receiving calibration on the first antenna according to a first receiving value and the first preset value, wherein the first receiving value is the signal strength of the first signal received by the first antenna; determining a coupling loss of the second antenna according to the first receiving value and a second receiving value, wherein the second receiving value is the signal strength of the first signal received by the second antenna, and performing receiving calibration on the second antenna according to the second receiving value, the coupling loss and the first preset value; transmitting a second signal to the meter through a pass-through port of the coupler based on the first antenna; the transmitting power of the second signal is a second preset value; and carrying out emission calibration on the first antenna according to a third receiving value and the second preset value, wherein the third receiving value is the signal strength of the second signal received by the instrument.
12. A computer storage readable storage medium having stored thereon computer readable instructions which, when run on a communication apparatus, cause the communication apparatus to perform the method of any one of claims 1-6.
CN202211446032.5A 2022-11-18 2022-11-18 Calibration method and related device Pending CN115865227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211446032.5A CN115865227A (en) 2022-11-18 2022-11-18 Calibration method and related device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211446032.5A CN115865227A (en) 2022-11-18 2022-11-18 Calibration method and related device

Publications (1)

Publication Number Publication Date
CN115865227A true CN115865227A (en) 2023-03-28

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