WO2019061046A1 - Method and apparatus for uplink calibration of amplifier - Google Patents

Abstract

The present application provides a method and apparatus for uplink calibration of an amplifier, the method comprising: a signal processing module on an amplifier subsystem side transmitting two uplink signals, one uplink signal is a high frequency signal, and the other uplink signal is a low frequency signal, two The transmit power of the uplink signals is equal; the pilot processing module determines the first received power difference and the second received power difference according to the monitored two downlink pilot signals transmitted by the processing module, the first received power difference And indicating a transmission power difference of the one uplink pilot signal, where the second received power difference is used to indicate a transmission power difference of the another uplink pilot signal; the signal processing module is configured according to the first received power difference and the second The received power difference is determined to determine whether the parameters of the amplifier subsystem in the upstream direction are adjusted. The method and apparatus of the embodiments of the present application can effectively improve the efficiency of uplink calibration.

Description

Method and device for uplink calibration of an amplifier Technical field

The present application relates to the field of communications, and in particular to a method and apparatus for uplink calibration of an amplifier in the field of communications.

Background technique

Uplink calibration is a very important feature of the Coax network. The essence of the Coax network uplink calibration is to implement the “0 Gain” and “0 Slope” principles of the uplink amplifier and its connected cable (including passive devices). This is the most important principle for the upward direction of the Coax network. The current amplifier upstream calibration generally adopts the manual calibration method. The steps include: 1) After the amplifier is deployed, the amplifier side constructor uses an uplink signal generator to inject two pilot signals f1 for determining power in the uplink input test port of the amplifier. And f2 (one for each of the high frequency and low frequency); 2) The cable modem terminal system (CMTS) side construction personnel measures the power values of f1 and f2, and informs the power values of f1 and f2 (such as telephone mode) amplifiers. 3) construction personnel; 3) amplifier side construction personnel calculate the amplifier side and CMTS side f1 and f2 power error, manually adjust the amplifier gain and slope to compensate for the power error; repeat steps 1) to 3) until the CMTS side receives f1 and f2 The power value is equal to the f1 and f2 power values emitted by the amplifier side. The prior art uplink calibration has low error compensation accuracy and low efficiency of uplink calibration.

Summary of the invention

The present application provides a method and apparatus for uplink calibration of an amplifier, which is advantageous for improving the accuracy compensation of the uplink calibration and effectively improving the efficiency of the uplink calibration.

In a first aspect, a method for uplink calibration of an amplifier is provided, the method comprising: a pilot processing module on an amplifier subsystem side transmitting a first uplink pilot signal to a pilot signal response processing module on a CMTS side of a cable modem termination system And the second uplink pilot signal, the first uplink pilot signal is a high frequency signal, and the second uplink pilot signal is a low frequency signal, and the first uplink pilot signal and the second uplink pilot signal have the same transmit power. The pilot processing module determines the first received power difference and the second received power difference according to the first downlink pilot signal and the second downlink pilot signal transmitted by the monitored pilot signal response processing module, where the first The received power difference is used to indicate a difference between a transmit power and a received power of the first uplink pilot signal, where the second received power difference is used to indicate a difference between a transmit power and a received power of the second uplink pilot signal; the pilot The processing module determines whether to adjust parameters of the uplink direction of the amplifier subsystem according to the first received power difference and the second received power difference.

Alternatively, other types of uplink and downlink signals may be utilized to establish automatic feedback of errors. The parameters in the upstream direction include an uplink gain and/or an uplink slope.

The automatic feedback of the error between the CMTS subsystem and the AMP subsystem by using the uplink and downlink signals is no longer dependent on manual implementation, and has the characteristics of automatic, error controllable, etc., which is beneficial to improve the accuracy compensation of the uplink calibration and is also effective. The efficiency of the upstream calibration is improved.

With reference to the first aspect, in some implementations of the first aspect, the pilot processing module determines, according to the monitored pilot signal response processing module, the first downlink pilot signal and the second downlink pilot signal, First received power difference and The second received power difference is determined by the pilot processing module determining the first downlink pilot signal according to the monitored first downlink pilot signal, the second downlink pilot signal, and the reference downlink pilot signal. The first received power difference of the reference downlink pilot signal and the second received pilot signal are different from the second received power of the reference downlink pilot signal.

In conjunction with the first aspect, in some implementations of the first aspect, the pilot processing module determines whether to perform uplink gain and uplink slope of the amplifier subsystem according to the first received power difference and the second received power difference The adjusting comprises: if the first received power difference and the second received power difference do not satisfy the first condition, the pilot processing module determines to adjust the uplink gain and the uplink slope of the amplifier subsystem.

In conjunction with the first aspect, in some implementations of the first aspect, the first condition is that the first received power difference and the second received power difference are equal, or the first received power difference and the second received power The difference is less than the first threshold.

With reference to the first aspect, in some implementations of the first aspect, after the pilot processing module adjusts an uplink gain and an uplink slope of the amplifier subsystem, the method further includes: the pilot processing module is directed to the pilot The frequency signal response module transmits a third uplink pilot signal and a fourth uplink pilot signal, the third uplink pilot signal is a high frequency signal, and the fourth uplink pilot signal is a low frequency signal, and the third uplink pilot signal is The transmit power of the fourth uplink pilot signal is equal; the pilot processing module determines the third receive power difference according to the third downlink pilot signal and the fourth downlink pilot signal transmitted by the monitored pilot signal response processing module. And a fourth received power difference, where the third received power difference is used to indicate a difference between a transmit power and a received power of the third uplink pilot signal, where the fourth received power difference is used to indicate the transmit of the fourth uplink pilot signal a difference between power and received power; the pilot processing module determines whether to uplink gain and uplink of the amplifier subsystem according to the third received power difference and the fourth received power difference Rate adjustments.

In conjunction with the first aspect, in some implementations of the first aspect, the pilot processing module on the amplifier subsystem side transmits a first uplink pilot signal and a pilot signal response processing module on the CMTS side of the cable modem termination system And transmitting, by the pilot processing module, the first uplink pilot signal and the second uplink pilot signal to the pilot signal response processing module, if the downlink pilot signal is not monitored.

In conjunction with the first aspect, in some implementations of the first aspect, the pilot processing module on the amplifier subsystem side transmits a first uplink pilot signal and a pilot signal response processing module on the CMTS side of the cable modem termination system And the second uplink pilot signal is sent by the pilot processing module to the pilot signal response processing module by using an uplink channel that does not currently carry the service of the terminal device.

In conjunction with the first aspect, in some implementations of the first aspect, the pilot signal response processing module is built into or external to the CMTS subsystem, and/or the pilot processing module is the amplifier The converter module in the subsystem.

In a second aspect, a method for uplink calibration of an amplifier is provided, the method comprising: a pilot signal response processing module on a CMTS side of a cable modem termination system listening to a first uplink guide transmitted by a pilot processing module on an amplifier subsystem side a frequency signal and a second uplink pilot signal, the first uplink pilot signal is a high frequency signal, the second uplink pilot signal is a low frequency signal, and the first uplink pilot signal and the second uplink pilot signal are transmitted. The pilot signal response processing module indicates, by the first downlink pilot signal and the second downlink pilot signal, the difference between the transmit power and the received power of the first uplink pilot signal by the first downlink pilot signal and the second downlink pilot signal, and the first The difference between the transmit power and the received power of the two uplink pilot signals, so that the pilot processing module determines whether to adjust the parameters of the uplink direction of the amplifier subsystem.

Alternatively, other types of uplink and downlink signals may be utilized to establish automatic feedback of errors. The parameters in the upstream direction include an uplink gain and/or an uplink slope.

With reference to the second aspect, in some implementations of the second aspect, the pilot signal response processing module passes the first The pilot signal and the second downlink pilot signal indicate to the pilot processing module a difference between a transmit power and a received power of the first uplink pilot signal and a difference between a transmit power and a receive power of the second uplink pilot signal, The pilot signal response processing module indicates, by the first downlink pilot signal, the second downlink pilot signal, and the reference downlink pilot signal, the transmit power and the receive of the first uplink pilot signal by using the first downlink pilot signal, the second downlink pilot signal, and the reference downlink pilot signal. a difference between a power difference and a transmit power and a received power of the second uplink pilot signal, where a difference between a transmit power of the first downlink pilot signal and the reference downlink pilot signal corresponds to the first uplink pilot signal The difference between the transmit power and the received power, the difference between the transmit power of the second downlink pilot signal and the reference downlink pilot signal corresponds to the difference between the transmit power and the receive power of the second uplink pilot signal.

With reference to the second aspect, in some implementations of the second aspect, the pilot signal response processing module indicates the first uplink to the pilot processing module by using the first downlink pilot signal and the second downlink pilot signal After the difference between the transmit power and the received power of the pilot signal and the difference between the transmit power and the receive power of the second uplink pilot signal, the method further includes: the pilot signal response processing module listening to the pilot processing module transmitting a third uplink pilot signal and a fourth uplink pilot signal, wherein the third uplink pilot signal is a high frequency signal, and the fourth uplink pilot signal is a low frequency signal, the third uplink pilot signal and the fourth uplink signal The transmit signal of the frequency signal is equal; the pilot signal response processing module indicates, by the third downlink pilot signal and the fourth downlink pilot signal, the difference between the transmit power and the receive power of the third uplink pilot signal by using the third downlink pilot signal and the fourth downlink pilot signal. And a difference between a transmit power and a receive power of the fourth uplink pilot signal, so that the pilot processing module determines whether to adjust the uplink gain and the uplink slope of the amplifier subsystem .

In conjunction with the second aspect, in some implementations of the second aspect, the pilot signal response processing module is built into or external to the CMTS subsystem, and/or the pilot processing module is the amplifier The converter module in the subsystem.

In a third aspect, an apparatus is provided for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect. In particular, the apparatus comprises means for performing the method of any of the above-described first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, an apparatus is provided for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect. In particular, the apparatus comprises means for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.

In a fifth aspect, an apparatus is provided, the apparatus comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected by a bus system. The memory is for storing instructions for executing the memory stored instructions for performing the method of any of the first aspect or the first aspect of the first aspect.

In a sixth aspect, an apparatus is provided, the apparatus comprising: a memory, a processor, an input interface, and an output interface. The memory, the processor, the input interface, and the output interface are connected by a bus system. The memory is for storing instructions for executing the memory stored instructions for performing the method of any of the above-described second aspect or any of the possible implementations of the second aspect.

In a seventh aspect, a computer storage medium is provided for storing the method in any of the above possible implementations of the first aspect or the first aspect, or any possible implementation of the second or second aspect Computer software instructions for use in the method of the present invention, including programs designed to perform the various aspects described above.

In an eighth aspect, a computer program product comprising instructions, when executed on a computer, causes the computer to perform the method of any of the first aspect or the optional implementation of the first aspect, or the second Aspect or method of any alternative implementation of the second aspect.

These and other aspects of the present application will be more readily apparent from the following description of the embodiments.

DRAWINGS

FIG. 1 is a schematic diagram of an application scenario of an embodiment of the present application.

2 is a schematic block diagram of a method of uplink calibration of an amplifier of an embodiment of the present application.

FIG. 3 shows a schematic block diagram of an AMP subsystem transmitting an uplink signal in an embodiment of the present application.

4 is a schematic block diagram of a CMTS subsystem receiving an uplink signal in an embodiment of the present application.

FIG. 5 is a schematic block diagram showing a downlink signal transmitted by a CMTS subsystem of an embodiment of the present application.

FIG. 6 shows another schematic block diagram of a method of uplink calibration of an amplifier of an embodiment of the present application.

FIG. 7 shows a schematic block diagram of an apparatus for uplink calibration of an amplifier of an embodiment of the present application.

FIG. 8 shows another schematic block diagram of an apparatus for uplink calibration of an amplifier of an embodiment of the present application.

FIG. 9 shows still another schematic block diagram of an apparatus for uplink calibration of an amplifier of an embodiment of the present application.

FIG. 10 shows still another schematic block diagram of an apparatus for uplink calibration of an amplifier of an embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division multiple access. (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, and the future fifth generation (5th Generation, 5G) system or new radio (New Radio, NR) and so on.

The CMTS in the embodiment of the present application is a central office device that manages and controls a cable modem (CM), provides data access services for cable television network users, and simultaneously completes network protocol (IP) packets and data signals. Modulation, demodulation, conversion, and routing functions, also known as wired routers. The CM is the terminal device of the CMTS system. The data signal and the analog signal are converted, and the signal is modulated and demodulated, so that the information can be better transmitted on the Hybrid Fiber-Coaxial (HFC) network.

FIG. 1 is a possible application scenario of an embodiment of the present application. As shown in FIG. 1, the components of the CMTS system are: a central office system CMTS, an intermediate transmission system HFC network, a user terminal system CM, and the like. Among them, the HFC network is usually composed of an amplifier (AMP), and the CM is connected to the network (Internet) or the server through the CMTS system. For HFC networks, uplink calibration is a very important feature, which is essentially the principle of “0 gain” and “0 slope” for the upstream amplifier and its connected cable network. That is to say, when the uplink power amplifier and the CMTS have the same transmission power of the two signals transmitted by the amplifier, the CMTS side needs to satisfy the reception power of the two signals and the emission of the two signals transmitted by the amplifier side. Conditions where the power is equal, or the received power of the two signals is equal.

2 shows a schematic block diagram of a method 100 of uplink calibration of an amplifier of an embodiment of the present application. As shown in FIG. 2, the method can be performed by a control unit on the amplifier side, and specifically, can be performed by a pilot processing module on the amplifier side. The method 100 includes some or all of the following:

S110. The pilot processing module on the amplifier subsystem side transmits a first uplink pilot signal and a second uplink pilot signal to a pilot signal response processing module on the CMTS side of the cable modem termination system, where the first uplink pilot signal is high. And the second uplink pilot signal is a low frequency signal, and the first uplink pilot signal and the second uplink pilot signal have the same transmit power.

S120, the pilot processing module determines a first received power difference and a second received power difference according to the first downlink pilot signal and the second downlink pilot signal sent by the monitored pilot signal response processing module, where A received power difference is used to indicate a difference between a transmit power and a received power of the first uplink pilot signal, where the second received power difference is used to indicate a difference between a transmit power and a received power of the second uplink pilot signal.

S130. The pilot processing module determines, according to the first received power difference and the second received power difference, whether to adjust parameters in an uplink direction of the amplifier subsystem.

Specifically, the pilot processing module on the AMP side of the amplifier subsystem in FIG. 1 can generate two uplink pilot signal frequencies of f1 and f2, respectively, f1 can be a high frequency, f2 can be a low frequency, and pilot processing on the AMP side. The module can transmit the two uplink pilot signals to the CMTS subsystem using the same transmit power, and the CMTS subsystem can feed back the transmit power of the two uplink pilot signals and the CMTS subsystem to the AMP subsystem through two downlink pilot signals. Receiving a power difference between received powers of the two uplink pilot signals, for example, for the CMTS subsystem, after receiving two uplink pilot signals, the received power and the transmit power of the two uplink pilot signals may be received. The difference is fed back to the AMP subsystem by two downlink pilot signals, wherein the transmit power of the two uplink pilot signals can be agreed in advance by the AMP subsystem and the CMTS subsystem, for example, if the two agreed The uplink pilot signal has a transmit power of 6 dBm, and the CMTS receives the two uplink pilot signals at 4 dBm and 5 dBm, respectively, so the CMTS subsystem can transmit a 1 dBm to the AMP subsystem, respectively. 2dBm downlink pilot signal, once the AMP subsystem receives the two downlink pilot signals, it can determine whether the relationship between the received powers of the two downlink pilot signals or the respective received power levels is required. The parameters of the AMP subsystem in the upstream direction are adjusted.

Therefore, the method for uplink calibration of the amplifier of the embodiment of the present application utilizes the uplink and downlink signals to establish an automatic feedback error between the CMTS subsystem and the AMP subsystem, which is no longer dependent on manual implementation, and has the characteristics of automatic, error controllable, etc. Therefore, it is beneficial to improve the accurate compensation of the error of the uplink calibration, and effectively improve the efficiency of the uplink calibration.

The so-called high-frequency signal usually refers to a signal with a higher frequency. Generally, a frequency range above 3 MHz can be referred to as a high frequency, and a low-frequency signal generally refers to a lowest frequency range applied to a certain technical field, for example, in an electronic amplifying circuit. The frequency close to the audio is called the low frequency, and it can be the frequency range of 20 Hz-60 Hz.

It should be understood that the above description is based on the pilot signal. The embodiment of the present application may also be other types of signals, for example, may be uplink and downlink reference signals, and then the execution body in the method 100 may be the amplifier subsystem side. The signal processing module of the CMTS side can be replaced by the signal processing module of the CMTS side, which is not limited by the embodiment of the present application.

It is understood by those skilled in the art that the so-called uplink gain is the power amplification value of the AMP to the uplink signal, and the uplink slope is the power difference between the AMP and the high-frequency and low-frequency amplification of the uplink signal. The power difference of the signal transmission determines whether the uplink gain and the uplink slope of the AMP are adjusted as an example. Alternatively, it may be separately determined whether to adjust the uplink gain or the uplink slope of the AMP, and then adjust when the adjustment is needed. It can also be adjusted by other parameters in the AMP uplink direction. The embodiments of the present application are not limited thereto.

It should also be understood that the pilot signal response processing module on the CMTS side of the embodiment of the present application may be a CMTS subsystem. One of the control modules may be a control module of a control device other than the CMTS, but the control device is connected to the CMTS subsystem; the pilot processing module of the AMP side of the embodiment of the present application may be an AMP subsystem. One of the control modules can be, for example, a Transponder module in the AMP or a control device external to the AMP subsystem. The embodiments of the present application are not limited thereto.

Optionally, in the embodiment of the present application, the pilot processing module determines the first received power difference according to the first downlink pilot signal and the second downlink pilot signal sent by the monitored pilot signal response processing module. And the second received power difference, the pilot processing module determining the first downlink guide according to the monitored first downlink pilot signal, the second downlink pilot signal, and the first reference downlink pilot signal The first received power difference between the frequency signal and the first reference downlink pilot signal and the second received pilot signal and the second received power of the first reference downlink pilot signal are different.

Specifically, the pilot signal response processing module on the CMTS side may also feed back the transmission power difference values of the two uplink pilot signals sent by the pilot processing module to the pilot processing module on the AMP side by using three downlink pilot signals. The embodiments of the present application are described in detail below by taking FIG. 3 to FIG. 6 as an example.

As shown in FIG. 3, the pilot processing module on the AMP subsystem side transmits two pilot signals P1 and P2 of the same power in the uplink direction. Among them, P1 is a low frequency signal and P2 is a high frequency signal.

The pilot signal response processing module of the CMTS side subsystem monitors and measures the pilot signals P1 and P2 in the uplink direction, and the measured pilot signals P1 and P2, that is, the pilot signal response processing module receives the pilot signals P1 and P2. Receive power. As shown in Figure 4.

The pilot signal response processing module of the CMTS side subsystem calculates the difference between the transmit power and the received power of the pilot signals P1 and P2, respectively, to obtain Δt ₁ and Δt ₂ , where Δt ₁ and Δt _{2 are} the actual uplink calibration of the amplifier. error. The CMTS side subsystem can notify Δt ₁ and Δt ₂ to the pilot processing module on the AMP side through three downlink pilot signals P3, P4 and P5. The transmit power of P4 may be the agreed reference power between the CMTS subsystem and the AMP subsystem, and the CMTS subsystem may also agree with the AMP subsystem that the difference between P3 and P4 is used to indicate Δt ₁ , and P4 The difference between P5 and P5 can be used to indicate Δt ₂ , as shown in FIG. 5 . In the figure, the frequency of the downlink pilot signals P3, P4, and P5 may be the same (if the same, then P3, P4, and P5 cannot be simultaneously transmitted, otherwise they cannot be detected at the same time), or may be different, and the feedback signal is used in the embodiment of the present application. The frequency is not limited.

The pilot processing module of the AMP subsystem measures the received power of the three downlink pilot signals according to the received P3, P4, and P5, and determines the received power according to the measured received power and the agreement between the CMTS and the AMP. Δt ₁ ' and Δt ₂ ' indicating the power difference of the P1 transmission. Furthermore, the pilot processing module on the AMP subsystem side can determine whether it is necessary to calibrate the upstream direction of the AMP subsystem according to the relationship between Δt ₁ ' and Δt ₂ ' and its own size.

Optionally, in the embodiment of the present application, after the pilot processing module adjusts the uplink gain and the uplink slope of the amplifier subsystem, the method further includes: the pilot processing module transmitting the pilot signal response module a third uplink pilot signal and a fourth uplink pilot signal, wherein the third uplink pilot signal is a high frequency signal, and the fourth uplink pilot signal is a low frequency signal, the third uplink pilot signal and the fourth uplink signal The transmit power of the frequency signal is equal; the pilot processing module determines the third received power difference and the fourth received power according to the monitored third and second downlink pilot signals transmitted by the processing module Poor, the third received power difference is used to indicate a difference between a transmit power and a received power of the third uplink pilot signal, where the fourth received power difference is used to indicate a transmit power and a receive power of the fourth uplink pilot signal. Poor; the pilot processing module determines whether to adjust the uplink gain and the uplink slope of the amplifier subsystem according to the third received power difference and the fourth received power difference.

That is, if the pilot processing module of the AMP subsystem determines that the upstream direction of the AMP subsystem needs to be calibrated according to Δt ₁ 'and Δt ₂ ', then after calibrating the upstream direction of the AMP subsystem, for example, The upstream gain and/or the upstream slope are adjusted up or down accordingly. After adjusting the uplink gain and/or the uplink slope, the steps of Figures 3 through 5 above may be repeated until the pilot processing module of the AMP subsystem determines that the upstream direction of the AMP is not required to be calibrated based on the error. Thus, errors do not accumulate in the metering scenario of the amplifier, improving the performance of the communication system.

Optionally, in the embodiment of the present application, the pilot processing module determines whether to adjust an uplink gain and an uplink slope of the amplifier subsystem according to the first received power difference and the second received power difference, including: The first received power difference and the second received power difference do not satisfy the first condition, and the pilot processing module determines to adjust the uplink gain and the uplink slope of the amplifier subsystem.

Specifically, the pilot processing module of the AMP subsystem can satisfy certain conditions according to whether Δt ₁ ' and Δt ₂ ' are satisfied. If a certain condition is met, the pilot processing module of the AMP subsystem can consider the uplink direction of the AMP subsystem. The calibration has been successful. If the mobile condition is not met, the pilot processing module of the AMP subsystem can consider that the uplink direction of the AMP subsystem needs to be adjusted, and the AMP subsystem can be further verified by the same method after the adjustment. Whether the upstream direction is successfully calibrated.

Optionally, in the embodiment of the present application, the first condition is that the first received power difference and the second received power difference are equal, or the first received power difference and the second received power difference are both smaller than the first Threshold.

Specifically, the pilot processing module of the AMP subsystem can determine whether the above Δt ₁ ' and Δt ₂ ' are equal. If they are equal, the pilot processing module of the AMP subsystem can consider that the uplink alignment of the AMP is successful, and can also determine Δt. Whether ₁ ' and Δt ₂ ' are both within a certain threshold. For example, in the case where both Δt ₁ ' and Δt ₂ ' are 0, it is considered that the upstream direction calibration of the AMP is successful, or may be Δt ₁ 'and When Δt ₂ ' is less than 1 dB, it is considered that the upstream direction calibration of the AMP is successful. It should be understood that, in the embodiment of the present application, the first condition is only used for illustrative description, and the embodiment of the present application does not limit this.

Those skilled in the art understand that adjusting the uplink gain and/or the uplink slope of the AMP may be performed by manually inserting an attenuating patch and a balanced insert in the AMP upstream direction or by software to automatically adjust the upstream direction amplifier attenuation and equalization value.

Optionally, in the embodiment of the present application, the pilot processing module on the amplifier subsystem side transmits the first uplink pilot signal and the second uplink pilot signal to the pilot signal response processing module on the CMTS side of the cable modem termination system. The pilot processing module transmits the first uplink pilot signal and the second uplink pilot signal to the pilot signal response processing module without monitoring the downlink pilot signal.

As shown in FIG. 1, in general, the HFC network includes a plurality of AMP subsystems, that is, the plurality of AMPs can simultaneously implement the above method 100, and each AMP subsystem can detect no downlink guides within a certain time interval. In the case of a frequency signal, the first uplink pilot signal and the second pilot signal are transmitted to the CMTS subsystem for the first time, thereby starting calibration of the uplink direction of the AMP subsystem.

Optionally, in the embodiment of the present application, the pilot processing module on the amplifier subsystem side transmits the first uplink pilot signal and the second uplink pilot signal to the pilot signal response processing module on the CMTS side of the cable modem termination system. The pilot processing module transmits the first uplink pilot signal and the second uplink pilot signal to the pilot signal response processing module by using an uplink channel that does not currently carry the service of the terminal device.

In other words, the pilot processing module of the AMP subsystem may transmit the first uplink pilot signal and the second uplink pilot signal by using an idle uplink channel, for example, by transmitting the foregoing by using two idle uplink channels. An uplink pilot signal and the second uplink pilot signal. Similarly, the pilot signal processing module of the CMTS subsystem can also transmit the first downlink pilot signal and the second downlink pilot signal through the idle downlink channel. Further, the accuracy of the error measurement can be improved.

The above is an embodiment of the present application described from the perspective of the AMP subsystem in conjunction with FIGS. 2 through 5, and an embodiment of the present application will be described from the perspective of the CMTS subsystem in conjunction with FIG. In particular, Figure 6 shows a schematic block diagram of a method 200 of uplink calibration of an amplifier of an embodiment of the present application. As shown in FIG. 6, the method 200 includes some or all of the following:

S210, the pilot signal response processing module on the CMTS side of the cable modem terminal system monitors the first uplink pilot signal and the second uplink pilot signal transmitted by the pilot processing module on the amplifier subsystem side, and the first uplink pilot signal For the high frequency signal, the second uplink pilot signal is a low frequency signal, and the first uplink pilot signal and the second uplink pilot signal have the same transmit power.

S220, the pilot signal response processing module indicates, by the first downlink pilot signal and the second downlink pilot signal, the difference between the transmit power and the received power of the first uplink pilot signal and the second by the pilot processing module. The difference between the transmit power and the received power of the uplink pilot signal is such that the pilot processing module determines whether to adjust the uplink gain and the uplink slope of the amplifier subsystem.

Therefore, the method for uplink calibration of the amplifier of the embodiment of the present application utilizes the uplink and downlink signals to establish an automatic feedback error between the CMTS subsystem and the AMP subsystem, which is no longer dependent on manual implementation, and has the characteristics of automatic, error controllable, etc. Therefore, it is beneficial to improve the accurate compensation of the error of the uplink calibration, and effectively improve the efficiency of the uplink calibration.

Optionally, in the embodiment of the present application, the pilot signal response processing module indicates, by using the first downlink pilot signal and the second downlink pilot signal, the transmit power of the first uplink pilot signal by using the first downlink pilot signal and the second downlink pilot signal. And a difference between the received power and the received power and the received power of the second uplink pilot signal, where the pilot signal response processing module passes the first downlink pilot signal, the second downlink pilot signal, and the first Determining, by the downlink pilot signal, a difference between a transmit power and a received power of the first uplink pilot signal and a difference between a transmit power and a receive power of the second uplink pilot signal, the first downlink guide The difference between the transmit power of the frequency signal and the first reference downlink pilot signal corresponds to the difference between the transmit power and the receive power of the first uplink pilot signal, the second downlink pilot signal and the first reference downlink pilot signal The difference in transmit power corresponds to the difference between the transmit power and the received power of the second uplink pilot signal.

Optionally, in the embodiment of the present application, the pilot signal response processing module instructs the pilot processing module to transmit the first uplink pilot signal by using the first downlink pilot signal and the second downlink pilot signal. After the difference between the power and the received power and the difference between the transmit power and the received power of the second uplink pilot signal, the method further includes: the pilot signal response processing module listening to the third uplink pilot transmitted by the pilot processing module The signal and the fourth uplink pilot signal, the third uplink pilot signal is a high frequency signal, the fourth uplink pilot signal is a low frequency signal, and the third uplink pilot signal and the fourth uplink pilot signal transmit power The pilot signal response processing module indicates, by the third downlink pilot signal and the fourth downlink pilot signal, the difference between the transmit power and the received power of the third uplink pilot signal and the fourth uplink to the pilot processing module. The difference between the transmit power and the received power of the pilot signal is such that the pilot processing module determines whether to adjust the uplink gain and the uplink slope of the amplifier subsystem.

Optionally, in the embodiment of the present application, the pilot signal response processing module is built in or external to the CMTS subsystem, and/or the pilot processing module is a transform in the amplifier subsystem. Module.

It should be understood that the interaction between the pilot signal response processing module on the CMTS side described by the method 200 and the pilot processing module described on the AMP side and related functions and functions are equal to the relevant characteristics and functions of the pilot processing module on the AMP side, and That is, what signal is generated by the pilot processing module of the AMP subsystem, and the pilot signal response of the CMTS subsystem What signal is received by the module, for the sake of brevity, it will not be repeated here.

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

The method for uplink calibration of an amplifier according to an embodiment of the present application is described in detail above. Hereinafter, an apparatus for uplink calibration of an amplifier according to an embodiment of the present application will be described with reference to FIGS. 7 to 10, and the technical features described in the method embodiment are applicable. In the following device examples.

FIG. 7 shows a schematic block diagram of an apparatus 300 for upstream calibration of an amplifier of an embodiment of the present application. As shown in FIG. 7, the apparatus 300 includes:

The first transmitting unit 310 is configured to transmit, by the pilot signal response processing module on the CMTS side of the cable modem terminal system, a first uplink pilot signal and a second uplink pilot signal, where the first uplink pilot signal is a high frequency signal, The second uplink pilot signal is a low frequency signal, and the transmit power of the first uplink pilot signal and the second uplink pilot signal are equal;

The first determining unit 320 is configured to determine a first received power difference and a second received power difference according to the first downlink pilot signal and the second downlink pilot signal that are sent by the monitored pilot signal response processing module, where The first received power difference is used to indicate a difference between a transmit power and a received power of the first uplink pilot signal, where the second received power difference is used to indicate a difference between a transmit power and a received power of the second uplink pilot signal;

The second determining unit 330 is configured to determine, according to the first received power difference and the second received power difference, whether to adjust an uplink gain and an uplink slope of the amplifier subsystem.

Therefore, the apparatus for uplink calibration of the amplifier of the embodiment of the present application automatically establishes an error of error between the CMTS subsystem and the AMP subsystem by using the uplink and downlink signals, and is no longer dependent on manual implementation, and has the characteristics of automatic, error controllable, etc. Therefore, it is beneficial to improve the accurate compensation of the error of the uplink calibration, and effectively improve the efficiency of the uplink calibration.

Optionally, in the embodiment of the present application, the first determining unit is specifically configured to: determine, according to the monitored first downlink pilot signal, the second downlink pilot signal, and the reference downlink pilot signal, The first received power difference between a downlink pilot signal and the reference downlink pilot signal and the second received power difference between the second downlink pilot signal and the reference downlink pilot signal.

Optionally, in the embodiment of the present application, the second determining unit is specifically configured to determine an uplink gain of the amplifier subsystem if the first received power difference and the second received power difference do not satisfy the first condition. The upward slope is adjusted.

Optionally, in the embodiment of the present application, the first condition is that the first received power difference and the second received power difference are equal, or the first received power difference and the second received power difference are both smaller than the first A threshold.

Optionally, in the embodiment of the present application, the apparatus further includes: a second sending unit, configured to send, to the pilot signal response module, a third uplink pilot signal and a fourth uplink pilot signal, where the third uplink indicator The frequency signal is a high frequency signal, the fourth uplink pilot signal is a low frequency signal, and the third uplink pilot signal and the fourth uplink pilot signal have the same transmit power; and the third determining unit is configured to monitor the The third downlink pilot signal and the fourth downlink pilot signal transmitted by the pilot signal response processing module determine a third received power difference and a fourth received power difference, where the third received power difference is used to indicate the third uplink pilot a difference between a transmit power and a received power of the signal, where the fourth received power difference is used to indicate a difference between a transmit power and a received power of the fourth uplink pilot signal; and a fourth determining unit is configured to use the third received power difference and The fourth received power difference determines whether the uplink gain and the uplink slope of the amplifier subsystem are adjusted.

Optionally, in the embodiment of the present application, the first transmitting unit is specifically configured to: when the downlink pilot signal is not monitored, transmit the first uplink pilot signal to the pilot signal response processing module, and the The second uplink pilot signal.

Optionally, in the embodiment of the present application, the first transmitting unit is specifically configured to: send the first uplink pilot signal and the first uplink pilot signal to the pilot signal response processing module by using an uplink channel that does not currently carry the service of the terminal device. Two uplink pilot signals.

Optionally, in the embodiment of the present application, the pilot signal response processing module is built in or external to the CMTS subsystem.

It should be understood that the apparatus 300 according to an embodiment of the present application may correspond to the pilot processing module on the AMP subsystem side in the method embodiment of the present application, and the above and other operations and/or functions of the respective units in the apparatus 300 are respectively implemented. The corresponding flow of the pilot processing module on the AMP subsystem side in the method of FIG. 2 is not described here for brevity.

FIG. 8 shows a schematic block diagram of an apparatus 400 for uplink calibration of an amplifier of an embodiment of the present application. As shown in FIG. 8, the apparatus 400 includes:

The first monitoring unit 410 is configured to monitor the first uplink pilot signal and the second uplink pilot signal that are sent by the pilot processing module on the side of the amplifier subsystem, where the first uplink pilot signal is a high frequency signal, and the second The uplink pilot signal is a low frequency signal, and the transmit power of the first uplink pilot signal and the second uplink pilot signal are equal;

The first indication unit 420 is configured to indicate, by using the first downlink pilot signal and the second downlink pilot signal, a difference between a transmit power and a receive power of the first uplink pilot signal and the second uplink to the pilot processing module. The difference between the transmit power and the received power of the pilot signal is such that the pilot processing module determines whether to adjust the uplink gain and the uplink slope of the amplifier subsystem.

Therefore, the apparatus for uplink calibration of the amplifier of the embodiment of the present application automatically establishes an error of error between the CMTS subsystem and the AMP subsystem by using the uplink and downlink signals, and is no longer dependent on manual implementation, and has the characteristics of automatic, error controllable, etc. Therefore, it is beneficial to improve the accurate compensation of the error of the uplink calibration, and effectively improve the efficiency of the uplink calibration.

Optionally, in the embodiment of the present application, the indication unit is specifically configured to: indicate, by the first downlink pilot signal, the second downlink pilot signal, and the reference downlink pilot signal, the first to the pilot processing module The difference between the transmit power and the received power of the uplink pilot signal and the difference between the transmit power and the received power of the second uplink pilot signal, and the difference between the transmit power of the first downlink pilot signal and the reference downlink pilot signal The difference between the transmit power and the received power of the first uplink pilot signal, the difference between the transmit power of the second downlink pilot signal and the reference downlink pilot signal corresponds to the transmit power and the receive of the second uplink pilot signal The difference in power.

Optionally, in the embodiment of the present application, the apparatus further includes: a second monitoring unit, configured to monitor a third uplink pilot signal and a fourth uplink pilot signal that are sent by the pilot processing module, where the third uplink is The pilot signal is a high frequency signal, the fourth uplink pilot signal is a low frequency signal, the third uplink pilot signal and the fourth uplink pilot signal have the same transmit power, and the second indicator unit is configured to pass the third downlink. The pilot signal and the fourth downlink pilot signal indicate to the pilot processing module a difference between a transmit power and a received power of the third uplink pilot signal and a difference between a transmit power and a receive power of the fourth uplink pilot signal, so that The pilot processing module determines whether to adjust the uplink gain and the uplink slope of the amplifier subsystem.

Optionally, in the embodiment of the present application, the pilot processing module is a converter module in the amplifier subsystem.

It should be understood that the apparatus 400 according to an embodiment of the present application may correspond to the pilot signal response processing module on the CMTS subsystem side in the method embodiment of the present application, and the above and other operations and/or functions of the respective units in the apparatus 400 are respectively In order to implement the corresponding process of the pilot signal response processing module on the CMTS subsystem side in the method of FIG. 6, for brevity, no further details are provided herein.

As shown in FIG. 9 , an embodiment of the present application further provides an apparatus 500 for uplink calibration of an amplifier. It may be the apparatus 300 of FIG. 7, which can be used to execute the content of the pilot processing module on the AMP subsystem side corresponding to the method 100 of FIG. The apparatus 500 includes an input interface 510, an output interface 520, a processor 530, and a memory 540. The input interface 510, the output interface 520, the processor 530, and the memory 540 can be connected by a bus system. The memory 540 is for storing programs, instructions or code. The processor 530 is configured to execute a program, an instruction or a code in the memory 540 to control the input interface 510 to receive a signal, control the output interface 520 to send a signal, and complete the operations in the foregoing method embodiments.

Therefore, the apparatus for uplink calibration of the amplifier of the embodiment of the present application automatically establishes an error of error between the CMTS subsystem and the AMP subsystem by using the uplink and downlink signals, and is no longer dependent on manual implementation, and has the characteristics of automatic, error controllable, etc. Therefore, it is beneficial to improve the accurate compensation of the error of the uplink calibration, and effectively improve the efficiency of the uplink calibration.

It should be understood that, in the embodiment of the present application, the processor 530 may be a central processing unit (CPU), and the processor 530 may also be another general-purpose processor, a digital signal processor (DSP). , Application Specific Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 540 can include read only memory and random access memory and provides instructions and data to the processor 530. A portion of the memory 540 may also include a non-volatile random access memory. For example, the memory 540 can also store information of the device type.

In the implementation process, each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 530 or an instruction in a form of software. The content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 540, and the processor 530 reads the information in the memory 540 and combines the hardware to complete the contents of the above method. To avoid repetition, it will not be described in detail here.

In a specific embodiment, the first transmitting unit and the second transmitting unit of the apparatus 300 can be implemented by the output interface 520 of FIG. 9, and the respective determining units of the apparatus 300 can be implemented by the processor 530 of FIG.

As shown in FIG. 10, the embodiment of the present application further provides an apparatus 600 for uplink calibration of an amplifier, which may be the apparatus 400 of FIG. 8, which can be used to perform the CMTS side corresponding to the method 200 of FIG. The pilot signal acknowledges the contents of the processing module. The terminal device 600 includes an input interface 610, an output interface 620, a processor 630, and a memory 640. The input interface 610, the output interface 620, the processor 630, and the memory 640 can be connected through a bus system. The memory 640 is used to store programs, instructions or code. The processor 630 is configured to execute a program, an instruction or a code in the memory 640 to control the input interface 610 to receive a signal, control the output interface 620 to send a signal, and complete the operations in the foregoing method embodiments.

Therefore, the apparatus for uplink calibration of the amplifier of the embodiment of the present application automatically establishes an error of error between the CMTS subsystem and the AMP subsystem by using the uplink and downlink signals, and is no longer dependent on manual implementation, and has the characteristics of automatic, error controllable, etc. Therefore, it is beneficial to improve the accurate compensation of the error of the uplink calibration, and effectively improve the efficiency of the uplink calibration.

It should be understood that, in the embodiment of the present application, the processor 630 may be a central processing unit (CPU), and the processor 630 may also be another general-purpose processor, a digital signal processor (DSP). , Application Specific Integrated Circuit (ASIC), on-site programmable Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

The memory 640 can include read only memory and random access memory and provides instructions and data to the processor 630. A portion of the memory 640 can also include a non-volatile random access memory. For example, the memory 640 can also store information of the device type.

In the implementation process, each content of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 630 or an instruction in a form of software. The content of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and combines the hardware to complete the contents of the above method. To avoid repetition, it will not be described in detail here.

In a specific implementation, the first indicating unit and the second indicating unit of the device 400 may be implemented by the output interface 620 in FIG. 10, and the first listening unit and the second listening unit of the device 400 may be input from the input interface in FIG. 610 implementation.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), and a A device that can store program code, such as a random access memory (RAM), a disk, or an optical disk.

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims (30)

A method for uplink calibration of an amplifier, comprising: The signal processing module on the side of the amplifier subsystem transmits a first uplink signal and a second uplink signal to the signal response processing module on the CMTS side of the cable modem terminal system, where the first uplink signal is a high frequency signal, and the second uplink signal is a low frequency signal, wherein the transmit power of the first uplink signal and the second uplink signal are equal; The signal processing module determines a first received power difference and a second received power difference according to the first downlink signal and the second downlink signal that are sent by the monitored signal response processing module, where the first received power difference is used for And indicating a difference between a transmit power and a receive power of the first uplink signal, where the second receive power difference is used to indicate a difference between a transmit power and a receive power of the second uplink signal; The signal processing module determines whether to adjust parameters of the uplink direction of the amplifier subsystem according to the first received power difference and the second received power difference. The method according to claim 1, wherein the signal processing module determines the first received power difference and the second according to the first downlink signal and the second downlink signal transmitted by the monitored signal response processing module. Receive power difference, including: The signal processing module determines, according to the monitored first downlink signal, the second downlink signal, and the reference downlink signal, the first received power difference between the first downlink signal and the reference downlink signal And the second downlink signal is different from the second received power of the reference downlink signal. The method according to claim 1 or 2, wherein the signal processing module determines whether to perform parameters in the uplink direction of the amplifier subsystem according to the first received power difference and the second received power difference. Adjustments, including: And if the first received power difference and the second received power difference do not satisfy the first condition, the signal processing module determines to adjust an uplink gain and an uplink slope of the amplifier subsystem. The method according to claim 3, wherein said first condition is that said first received power difference and said second received power difference are equal, or said first received power difference and said first The two received power differences are both less than the first threshold. The method according to claim 3 or 4, wherein after the signal processing module adjusts the uplink gain and the uplink slope of the amplifier subsystem, the method further includes: The signal processing module transmits a third uplink signal and a fourth uplink signal to the signal response module, where the third uplink signal is a high frequency signal, the fourth uplink signal is a low frequency signal, and the third uplink signal is The transmit power of the fourth uplink signal is equal; The signal processing module determines a third received power difference and a fourth received power difference according to the third downlink signal and the fourth downlink signal that are sent by the monitored signal response processing module, where the third received power difference is used to indicate a difference between a transmit power and a receive power of the third uplink signal, where the fourth receive power difference is used to indicate a difference between a transmit power and a receive power of the fourth uplink signal; The processing module determines whether to adjust parameters of the uplink direction of the amplifier subsystem according to the third received power difference and the fourth received power difference. Method according to any one of claims 1 to 5, signal processing module on the side of the amplifier subsystem Transmitting the first uplink signal and the second uplink signal to the signal response processing module on the CMTS side of the cable modem terminal system, including: The processing module transmits the first uplink signal and the second uplink signal to the signal response processing module without detecting a downlink signal. The method according to any one of claims 1 to 6, wherein the processing module on the amplifier subsystem side transmits a first uplink signal and a second uplink to a signal response processing module on the CMTS side of the cable modem termination system Signals, including: The processing module transmits the first uplink signal and the second uplink signal to the signal response processing module by using an uplink channel that does not currently carry the service of the terminal device. The method according to any one of claims 1 to 7, wherein the signal response processing module is built in or external to the CMTS subsystem, and/or the signal processing The module is a converter module in the amplifier subsystem. The method according to any one of claims 1 to 8, wherein the uplink signal is an uplink pilot signal, and/or the downlink signal is a downlink pilot signal. A method for uplink calibration of an amplifier, comprising: The signal response processing module on the CMTS side of the cable modem terminal system monitors the first uplink signal and the second uplink signal sent by the signal processing module on the side of the amplifier subsystem, the first uplink signal is a high frequency signal, and the second uplink is The signal is a low frequency signal, and the transmit powers of the first uplink signal and the second uplink signal are equal; The signal response processing module indicates, by the first downlink signal and the second downlink signal, a difference between a transmit power and a receive power of the first uplink signal and a transmit power and a receive of the second uplink signal to the signal processing module. The difference in power is such that the processing module determines whether to adjust the parameters of the amplifier subsystem in the upstream direction. The method according to claim 10, wherein the signal response processing module indicates, by the first downlink signal and the second downlink signal, the transmit power and the receive power of the first uplink signal to the signal processing module. And a difference between a transmit power and a received power of the second uplink signal, including: The signal response processing module indicates, by the first downlink signal, the second downlink signal, and the reference downlink signal, the difference between the transmit power and the received power of the first uplink signal and the second uplink to the signal processing module a difference between a transmit power and a received power of the signal, where a difference between a transmit power of the first downlink signal and the reference downlink signal corresponds to a difference between a transmit power and a receive power of the first uplink signal, the second downlink The difference between the transmit power of the signal and the reference downlink signal corresponds to the difference between the transmit power and the receive power of the second uplink signal. The method according to claim 10 or 11, wherein the signal response processing module indicates, to the processing module, the transmit power and reception of the first uplink signal by using the first downlink signal and the second downlink signal. After the difference between the power and the difference between the transmit power and the received power of the second uplink signal, the method further includes: The signal response processing module monitors a third uplink signal and a fourth uplink signal that are sent by the signal processing module, where the third uplink signal is a high frequency signal, the fourth uplink signal is a low frequency signal, and the third The uplink signals and the fourth uplink signal have equal transmit powers; The signal response processing module indicates, by the third downlink signal and the fourth downlink signal, a difference between a transmit power and a receive power of the third uplink signal and a transmit power and a receive power of the fourth uplink signal to the signal processing module. The difference is such that the processing module determines whether to adjust the parameters of the amplifier subsystem in the upstream direction. The method according to any one of claims 10 to 12, wherein the signal response processing mode A block is built into or external to the CMTS subsystem, and/or the signal processing module is a converter module in the amplifier subsystem. The method according to any one of claims 10 to 13, wherein the parameters in the uplink direction comprise an uplink gain and/or an uplink slope. The method according to any one of claims 10 to 14, wherein the uplink signal is an uplink pilot signal, and/or the downlink signal is a downlink pilot signal. An apparatus for uplink calibration of an amplifier, characterized in that the apparatus comprises: a first transmitting unit, configured to send a first uplink signal and a second uplink signal to a signal response processing module on a CMTS side of the cable modem terminal system, where the first uplink signal is a high frequency signal, and the second uplink signal is a low frequency Signal, the transmit power of the first uplink signal and the second uplink signal are equal; a first determining unit, configured to determine a first received power difference and a second received power difference according to the first downlink signal and the second downlink signal that are sent by the monitored signal response processing module, where the first received power difference is And a difference between a transmit power and a receive power of the first uplink signal, where the second receive power difference is used to indicate a difference between a transmit power and a receive power of the second uplink signal; And a second determining unit, configured to determine, according to the first received power difference and the second received power difference, whether to adjust parameters in an uplink direction of the amplifier subsystem. The device according to claim 16, wherein the first determining unit is specifically configured to: Determining, according to the monitored first downlink signal, the second downlink signal, and the reference downlink signal, the first received power difference between the first downlink signal and the reference downlink signal, and the second The downlink signal is different from the second received power of the reference downlink signal. The device according to claim 16 or 17, wherein the second determining unit is specifically configured to: And if the first received power difference and the second received power difference do not satisfy the first condition, determining to adjust an uplink gain and an uplink slope of the amplifier subsystem. The apparatus according to claim 18, wherein said first condition is that said first received power difference and said second received power difference are equal, or said first received power difference and said first The two received power differences are both less than the first threshold. The device according to claim 18 or 19, wherein the device further comprises: a second transmitting unit, configured to send a third uplink signal and a fourth uplink signal to the signal response module, where the third uplink signal is a high frequency signal, the fourth uplink signal is a low frequency signal, and the third uplink is The signal and the fourth uplink signal have equal transmit powers; a third determining unit, configured to determine a third received power difference and a fourth received power difference according to the third downlink signal and the fourth downlink signal that are sent by the monitored signal response processing module, where the third received power difference is used And indicating a difference between a transmit power and a receive power of the third uplink signal, where the fourth received power difference is used to indicate a difference between a transmit power and a receive power of the fourth uplink signal; And a fourth determining unit, configured to determine, according to the third received power difference and the fourth received power difference, whether to adjust parameters in an uplink direction of the amplifier subsystem. The device according to any one of claims 16 to 20, wherein the first transmitting unit is specifically configured to: Transmitting the first uplink signal to the signal response processing module and not detecting the downlink signal The second uplink signal. The device according to any one of claims 16 to 21, wherein the first transmitting unit is specifically configured to: And transmitting, by the signal response processing module, the first uplink signal and the second uplink signal by using an uplink channel that does not currently carry the service of the terminal device. Apparatus according to any one of claims 16 to 22, wherein said signal response processing module is built into or external to said CMTS subsystem. The apparatus according to any one of claims 16 to 23, wherein the uplink signal is an uplink pilot signal, and/or the downlink signal is a downlink pilot signal. An apparatus for uplink calibration of an amplifier, characterized in that the apparatus comprises: a first monitoring unit, configured to monitor a first uplink signal and a second uplink signal sent by a signal processing module on an amplifier subsystem side, where the first uplink signal is a high frequency signal, and the second uplink signal is a low frequency signal, The transmit powers of the first uplink signal and the second uplink signal are equal; a first indicating unit, configured to indicate, by using the first downlink signal and the second downlink signal, a difference between a transmit power and a receive power of the first uplink signal and a transmit power of the second uplink signal to the signal processing module The difference in power is received to facilitate the processing module to determine whether to adjust parameters in the upstream direction of the amplifier subsystem. The device according to claim 25, wherein the indicating unit is specifically configured to: And indicating, by the first downlink signal, the second downlink signal, and the reference downlink signal, a difference between a transmit power and a receive power of the first uplink signal and a transmit power and a receive of the second uplink signal, by the signal processing module a difference between powers, a difference between a transmit power of the first downlink signal and the reference downlink signal, a difference between a transmit power and a receive power of the first uplink signal, the second downlink signal and the reference downlink The difference in transmit power of the signal corresponds to the difference between the transmit power and the received power of the second uplink signal. The device according to claim 25 or 26, wherein the device further comprises: a second monitoring unit, configured to monitor a third uplink signal and a fourth uplink signal that are sent by the signal processing module, where the third uplink signal is a high frequency signal, and the fourth uplink signal is a low frequency signal, where the The transmit powers of the three uplink signals and the fourth uplink signal are equal; a second indicating unit, configured to indicate, by the third downlink signal and the fourth downlink signal, a difference between a transmit power and a receive power of the third uplink signal and a transmit power and a receive of the fourth uplink signal to the signal processing module The difference in power is such that the signal processing module determines whether to adjust parameters in the upstream direction of the amplifier subsystem. Apparatus according to any one of claims 25 to 27, wherein said signal processing module is a converter module in said amplifier subsystem. The apparatus according to any one of claims 25 to 28, wherein the parameter in the uplink direction comprises an uplink gain and/or an uplink slope. The apparatus according to any one of claims 25 to 29, wherein the uplink signal is an uplink pilot signal, and/or the downlink signal is a downlink pilot signal.

Images