Signal sending method, device, electronic device and storage medium

Abstract

The present application discloses a signal sending method, device, electronic device and storage medium. The method includes: an optical module receives a first control signal, the first control signal is used to instruct the optical module to send a training signal to a network side device; the optical module is connected to the network side device via an electrical signal link; after receiving the first control signal, the optical module sends the training signal, and the training signal is a signal used by the network side device to perform equalization parameter training. After the optical module is powered on, the method controls the optical module through a control signal to send a training signal before transmitting an uplink control signal, and uses the training signal to perform equalization parameter training to obtain a target equalization parameter, thereby realizing that the target equalization parameter is used for subsequent equalization of the uplink control signal, thereby improving signal equalization efficiency.

Description

Technical Field

[0001] The present application relates to the field of signal processing technology, and in particular to a signal sending method, device, electronic device and storage medium. Background Art

[0002] In digital communication systems, due to channel fading and other factors, transmitted signals can generate severe inter-symbol interference (ISI) at the receiving end, leading to increased bit error rates. As the transmission rate increases, the bit error rate also increases significantly. To overcome ISI, reduce the bit error rate, and improve the transmission performance of the communication system, signal equalization is generally used at the receiving end. Signal equalization is a method by which the receiver / transmitter equalizes the transmitted signal based on the channel characteristics. This method generates a signal with characteristics opposite to the channel characteristics, thereby reducing or eliminating the ISI caused by the channel characteristics during the transmission of the transmitted signal.

[0003] Currently, a method is usually adopted in which the signal transmission equipment is tested before it is put into use to obtain the optimal equalization parameters, and the parameters are fixedly written into the equipment, so that the equipment can use the above-mentioned equalization parameters to achieve signal equalization during the signal transmission process after it is put into use.

[0004] However, if the signal transmission equipment needs to replace the optical module to meet the requirements of faster transmission rates, the fixed equalization parameters used in the above signal equalization method will most likely not meet the performance requirements of the new optical module for signal equalization. Therefore, the above signal equalization method is inefficient. Summary of the Invention

[0005] The embodiments of the present application provide a signal transmission method, apparatus, electronic device, and storage medium. After an optical module is powered on, a control signal is used to control the optical module to send a training signal before transmitting an uplink control signal. The training signal is used to train equalization parameters to obtain target equalization parameters, thereby enabling the target equalization parameters to be used for subsequent equalization of the uplink control signal, thereby improving signal equalization efficiency.

[0006] In a first aspect, an embodiment of the present application provides a signal transmission method, applied to an optical module, the method comprising:

[0007] The optical module receives a first control signal, wherein the first control signal is used to instruct the optical module to send a training signal to a network-side device; the optical module is connected to the network-side device via an electrical signal link;

[0008] The optical module sends the training signal, where the training signal is a signal used by the network-side device to perform equalization parameter training.

[0009] In an embodiment of the present application, after receiving a first control signal, the optical module transmits a training signal to the network-side device. The first control signal is sent by the network-side device to the optical module to instruct the optical module to transmit the training signal to the network-side device. The training signal is a signal used by the network-side device to perform equalization parameter training. The optical module is connected to the network-side device via an electrical signal link. The optical module is a pluggable optical module that can transmit electrical signals to the network-side device by being inserted into the network-side device and powered on.

[0010] Compared with the current method of writing fixed equalization parameters into the device, the embodiment of the present application uses a first control signal to control the optical module to send a training signal to the network side device after power-on and before transmitting the uplink control signal. The training signal is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. After the pluggable optical module is inserted into the network side device and powered on, the equalization parameter training of the electrical signal link can be completed without relying on the optical network unit (ONU) to emit light, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed passive optical network (PON) system and improving the signal equalization efficiency.

[0011] In a possible implementation, the training signal is a signal generated by the optical module;

[0012] Alternatively, the training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the network-side device.

[0013] In an embodiment of the present application, two different methods are provided for the source of the training signal sent by the above-mentioned optical module. The training signal can be a signal generated by the internal functional module of the optical module itself according to the channel characteristics of the electrical signal link. After receiving the above-mentioned first control signal, the optical module sends the above-mentioned generated training signal to the network side device. Alternatively, the training signal can also be a signal output by the optical module when it receives a digital signal. The training signal can be understood as a signal that undergoes electrical excitation changes due to the channel characteristics of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the optical module sends the above-mentioned training signal to the network side device. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0014] In one possible implementation, the method further includes:

[0015] receiving a second control signal, where the second control signal is used to instruct the optical module to send an uplink transmission signal to the network-side device;

[0016] The uplink transmission signal is sent, where the uplink transmission signal is a signal equalized using target equalization parameters, and the target equalization parameters are obtained by performing equalization parameter training using the training signal.

[0017] In an embodiment of the present application, after the optical module receives the second control signal, it sends an uplink transmission signal to the network side device. The second control signal is sent by the network side device to the optical module when the equalization parameter training is completed, and is used to instruct the optical module to send the uplink transmission signal to the network side device. The uplink transmission signal is a signal that the network side device equalizes using the target equalization parameter. The target equalization parameter is an equalization parameter obtained by the network side device using the training signal sent by the optical module to perform equalization parameter training. The embodiment of the present application controls the optical module to send an uplink transmission signal to the network side device after the network side device completes the equalization parameter training through the second control signal, which can realize the equalization of the uplink transmission signal by the network side device using the target equalization parameter, thereby improving the signal equalization efficiency.

[0018] In a possible implementation, the optical module includes a sequence generator and a first multiplexer, and the sequence generator is coupled to the first multiplexer;

[0019] The optical module receives a first control signal, including:

[0020] The first multiplexer receives the first control signal;

[0021] The optical module sending the training signal includes:

[0022] The first multiplexer uses the first control signal to control the sequence generator to send the training signal to the network side device, where the training signal is generated by the sequence generator.

[0023] In an embodiment of the present application, a possible internal functional module structure of the above-mentioned optical module is provided. The optical module includes a sequence generator and a first multiplexer, and the sequence generator and the first multiplexer are coupled. After the first multiplexer receives the above-mentioned first control signal, it uses the first control signal to control the sequence generator to send a training signal generated by the sequence generator to the network side device. Its externalization is that after the optical module receives the first control signal, it sends a training signal to the network side device. Among them, the first multiplexer can specifically achieve control of the sequence generator by selecting the output signal source as the sequence generator. The first multiplexer selects the output signal source as the sequence generator, which can achieve the situation that when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the training signal generated by the sequence generator is transmitted to the network side device through the first multiplexer and the electrical signal link, and is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. The internal functional module structure of the optical module provided in the embodiment of the present application, by adding a sequence generator, realizes that after the pluggable optical module is inserted into the network-side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0024] In a possible implementation, the optical module includes a first multiplexer and a second multiplexer, and the first multiplexer and the second multiplexer are coupled;

[0025] The optical module receives a first control signal, including:

[0026] The first multiplexer receives the first control signal;

[0027] The optical module sending the training signal includes:

[0028] The first multiplexer uses the first control signal to control the second multiplexer to send the training signal to the network side device. The training signal is the signal output by the first multiplexer when the second multiplexer receives a digital signal. The digital signal is sent by the network side device to the second multiplexer.

[0029] In an embodiment of the present application, another possible internal functional module structure of the above-mentioned optical module is provided. The optical module includes a first multiplexer and a second multiplexer, and the first multiplexer and the second multiplexer are coupled. After receiving the above-mentioned first control signal, the first multiplexer uses the first control signal to control the second multiplexer to send a training signal to the network side device. The training signal is the signal output by the first multiplexer when the second multiplexer receives a digital signal. The digital signal is sent by the network side device to the second multiplexer. Its external manifestation is that after receiving the first control signal and the digital signal, the optical module sends the training signal to the network side device. Among them, the first multiplexer can specifically control the second multiplexer by selecting the output signal source as the second multiplexer. The first multiplexer selects the output signal source as the second multiplexer, so as to achieve the control of the second multiplexer. When the first multiplexer selects the output signal source as the second multiplexer, it can be achieved that when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the digital signal received by the second multiplexer is transmitted to the network side device through the second multiplexer, the first multiplexer and the electrical signal link, for the network side device to perform equalization parameter training to obtain the target equalization parameters. The internal functional module structure of the optical module provided in the embodiment of the present application does not require a new sequence generator. Through two multiplexers, after the pluggable optical module is inserted into the network-side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0030] In a possible implementation, the optical module further includes an amplifier, and the amplifier is coupled to the first multiplexer;

[0031] The receiving of the second control signal comprises:

[0032] The first multiplexer receives the second control signal;

[0033] The sending of the uplink transmission signal includes:

[0034] The first multiplexer uses the second control signal to control the amplifier to send the uplink transmission signal to the network side device.

[0035] In an embodiment of the present application, another possible structure of the internal functional module of the above-mentioned optical module is provided. The optical module includes a sequence generator and a first multiplexer, or includes a first multiplexer and a second multiplexer, and further includes an amplifier, which is coupled to the first multiplexer. After the first multiplexer receives the second control signal, it uses the second control signal to control the amplifier to send an uplink transmission signal to the network side device. Its externalization is that after the optical module receives the second control signal, it sends an uplink transmission signal to the network side device. Among them, the first multiplexer can specifically achieve control of the amplifier by selecting the output signal source as the amplifier. The first multiplexer selects the output signal source as the amplifier, which can achieve that after the network side device completes the equalization parameter training and there is an ONU signal input, the uplink transmission signal input through the amplifier is transmitted to the network side device through the first multiplexer and the electrical signal link, so that the network side device uses the target equalization parameters obtained by the equalization parameter training to equalize the uplink transmission signal. The internal functional module structure of the optical module provided in the embodiment of the present application, based on the aforementioned module structure, controls the sending of training signals and uplink transmission signals to the network side device at different stages by coupling an amplifier with a first multiplexer, so that the network side device can complete the equalization parameter training of the electrical signal link without relying on the ONU to emit light, and the equalization parameter training process does not interfere with the subsequent equalization process of the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0036] In a second aspect, an embodiment of the present application provides a signal equalization method, the method comprising:

[0037] The network side device outputs a first control signal, wherein the first control signal is used to instruct the optical module to send a training signal to the network side device; the network side device is connected to the optical module via an electrical signal link;

[0038] The network side device receives the training signal;

[0039] The network-side device performs equalization parameter training using the training signal to obtain target equalization parameters, and the target equalization parameters are used to equalize the uplink transmission signal.

[0040] In an embodiment of the present application, after the network-side device sends a first control signal to the optical module, it receives a training signal sent by the optical module, and then uses the received training signal to train the equalization parameters to obtain target equalization parameters. The first control signal is used to instruct the optical module to send a training signal to the network-side device, and the target equalization parameters are used to equalize the subsequently received uplink transmission signal. The above-mentioned network-side device is connected to the optical module via an electrical signal link. The optical module is a pluggable optical module that can transmit electrical signals to the network-side device by being inserted into the network-side device and powered on.

[0041] Compared with the current method of writing fixed equalization parameters into the device, the embodiment of the present application uses a first control signal to control the optical module to send a training signal to the network side device after power-on and before transmitting the uplink control signal. The network side device then uses the training signal to perform equalization parameter training to obtain the target equalization parameters, thereby achieving the completion of the equalization parameter training of the electrical signal link after the pluggable optical module is inserted into the network side device and powered on, without relying on the ONU to illuminate, and the equalization parameter training process and the subsequent equalization process of the uplink transmission signal do not interfere with each other, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the equalization parameter training efficiency and signal equalization efficiency.

[0042] In a possible implementation, the training signal is a signal generated by the optical module.

[0043] In an embodiment of the present application, a possible method is provided for the source of the training signal sent by the above-mentioned optical module. The training signal can be a signal generated by the internal functional module of the optical module itself according to the channel characteristics of the electrical signal link between the network side device and the optical module. After receiving the first control signal sent by the network side device, the optical module sends the above-generated training signal to the network side device. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link between the network side device and the optical module, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0044] In a possible implementation, the training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the network-side device.

[0045] In an embodiment of the present application, another possible way is provided for the source of the training signal sent by the above-mentioned optical module. The training signal can also be a signal output by the optical module when it receives a digital signal sent by a network-side device. The training signal can be understood as a signal that undergoes electrical excitation due to the channel characteristics of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the optical module sends the above-mentioned training signal to the network-side device. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link between the network-side device and the optical module, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0046] In a possible implementation, outputting the first control signal includes:

[0047] When it is detected that the optical module is inserted into the network-side device and powered on, the first control signal is output.

[0048] In an embodiment of the present application, upon detecting that an optical module is inserted into the network-side device and powered on, the network-side device outputs a first control signal to control the optical module to send a training signal to the network-side device for equalization parameter training. By detecting the insertion and power-on status of the optical module and controlling the control signal sent thereto, the present application embodiment can obtain a training signal for completing equalization parameter training even without an ONU signal input, thereby improving the efficiency of equalization parameter training and thereby improving signal equalization efficiency.

[0049] In one possible implementation, the method further includes:

[0050] Outputting a second control signal, where the second control signal is used to instruct the optical module to send the uplink transmission signal to the network-side device;

[0051] receiving the uplink transmission signal;

[0052] The uplink transmission signal is equalized using the target equalization parameter.

[0053] In an embodiment of the present application, the network side device sends a second control signal to the optical module after completing the equalization parameter training, which is used to instruct the optical module to send an uplink transmission signal to the network side device. After receiving the uplink transmission signal, the network side device uses the target equalization parameters obtained by the above-mentioned equalization parameter training to perform signal equalization on the uplink transmission signal. In an embodiment of the present application, the optical module is controlled by the second control signal to send an uplink transmission signal to the network side device after the network side device completes the equalization parameter training, so that the network side device can use the target equalization parameters to equalize the uplink transmission signal. And because the control optical module sends the training signal and the uplink transmission signal to the network side device respectively at different stages, it can achieve the effect that the process of the network side device equalizing the uplink transmission signal and the above-mentioned equalization parameter training process do not interfere with each other, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system, thereby improving the equalization parameter training efficiency and signal equalization efficiency.

[0054] In a third aspect, an embodiment of the present application provides a signal sending device, which is applied to an optical module. The device includes:

[0055] a receiving unit, configured to receive a first control signal, wherein the first control signal is used to instruct the signal sending device to send a training signal to a network-side device; the signal sending device is connected to the network-side device via an electrical signal link;

[0056] The sending unit is used to send the training signal, where the training signal is a signal used by the network side device to perform equalization parameter training.

[0057] In an embodiment of the present application, after receiving a first control signal, the signal transmitting device transmits a training signal to the network-side device. The first control signal is sent by the network-side device to the signal transmitting device, instructing the signal transmitting device to transmit the training signal to the network-side device. The training signal is a signal used by the network-side device to perform equalization parameter training. The above-mentioned signal transmitting device is connected to the network-side device via an electrical signal link. The signal transmitting device is a pluggable signal transmitting device that can transmit electrical signals to the network-side device by being inserted into the network-side device and powered on.

[0058] Compared with the current method of writing fixed equalization parameters into the device, the embodiment of the present application uses a first control signal to control the signal sending device to send a training signal to the network side device after power-on and before transmitting the uplink control signal. The training signal is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. After the pluggable signal sending device is inserted into the network side device and powered on, the equalization parameter training of the electrical signal link can be completed without relying on the ONU to emit light, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0059] In a possible implementation manner, the training signal is a signal generated by the signal sending device;

[0060] Alternatively, the training signal is a signal output by the signal sending device when receiving a digital signal, and the digital signal is sent to the signal sending device by the network side device.

[0061] In an embodiment of the present application, two different methods are provided for the source of the training signal sent by the above-mentioned signal sending device. The training signal can be a signal generated by the internal functional module of the signal sending device itself according to the channel characteristics of the electrical signal link. After receiving the above-mentioned first control signal, the signal sending device sends the above-mentioned generated training signal to the network side device. Alternatively, the training signal can also be a signal output by the signal sending device when it receives a digital signal. The training signal can be understood as a signal that is electrically excited due to the channel characteristics of the electrical signal link after the digital signal received by the signal sending device is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the signal sending device sends the above-mentioned training signal to the network side device. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0062] In a possible implementation, the receiving unit is further configured to receive a second control signal, where the second control signal is used to instruct the signal sending device to send an uplink transmission signal to the network-side device;

[0063] The sending unit is further configured to send the uplink transmission signal, where the uplink transmission signal is a signal equalized using target equalization parameters, and the target equalization parameters are obtained by performing equalization parameter training using the training signal.

[0064] In an embodiment of the present application, after receiving the second control signal, the signal sending device sends an uplink transmission signal to the network side device. The second control signal is sent by the network side device to the signal sending device when the equalization parameter training is completed, and is used to instruct the signal sending device to send the uplink transmission signal to the network side device. The uplink transmission signal is a signal that the network side device equalizes using the target equalization parameters. The target equalization parameters are equalization parameters obtained by the network side device using the training signal sent by the signal sending device to perform equalization parameter training. In the embodiment of the present application, the second control signal is used to control the signal sending device to send an uplink transmission signal to the network side device after the network side device completes the equalization parameter training. This can enable the network side device to equalize the uplink transmission signal using the target equalization parameters, thereby improving the signal equalization efficiency.

[0065] In a possible implementation, the optical module includes a sequence generator and a first multiplexer, and the sequence generator is coupled to the first multiplexer;

[0066] The first multiplexer is configured to receive the first control signal transmitted by the receiving unit;

[0067] The first multiplexer is further configured to use the first control signal to control the sequence generator to send the training signal to the sending unit, where the training signal is generated by the sequence generator.

[0068] In an embodiment of the present application, a possible internal functional module structure of the above-mentioned optical module is provided. The optical module includes a sequence generator and a first multiplexer, and the sequence generator and the first multiplexer are coupled. After the first multiplexer receives the first control signal transmitted by the above-mentioned receiving unit, it uses the first control signal to control the sequence generator to send the training signal generated by the sequence generator to the above-mentioned sending unit. Its externalization is that after the optical module receives the first control signal, it sends a training signal to the network side device. Among them, the first multiplexer can specifically achieve control of the sequence generator by selecting the output signal source as the sequence generator. The first multiplexer selects the output signal source as the sequence generator, which can achieve the following situation: when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the training signal generated by the sequence generator is transmitted to the network side device through the first multiplexer and the electrical signal link, and is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. The internal functional module structure of the optical module provided in the embodiment of the present application, by adding a sequence generator, realizes that after the pluggable optical module is inserted into the network-side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0069] In a possible implementation, the optical module includes a first multiplexer and a second multiplexer, and the first multiplexer and the second multiplexer are coupled;

[0070] The first multiplexer is configured to receive the first control signal transmitted by the receiving unit;

[0071] The first multiplexer is further configured to use the first control signal to control the second multiplexer to send the training signal to the sending unit, where the training signal is a signal output by the first multiplexer when the second multiplexer receives a digital signal, and the digital signal is transmitted from the receiving unit to the second multiplexer.

[0072] In an embodiment of the present application, another possible internal functional module structure of the above-mentioned optical module is provided. The optical module includes a first multiplexer and a second multiplexer, and the first multiplexer and the second multiplexer are coupled. After the first multiplexer receives the first control signal transmitted by the above-mentioned receiving unit, the first multiplexer uses the first control signal to control the second multiplexer to send a training signal to the above-mentioned sending unit. The training signal is the signal output by the first multiplexer when the second multiplexer receives a digital signal. The digital signal is transmitted by the above-mentioned receiving unit to the second multiplexer. Its external manifestation is that after the optical module receives the first control signal and the digital signal, it sends the training signal to the network side device. Among them, the first multiplexer can specifically control the second multiplexer by selecting the output signal source as the second multiplexer. The first multiplexer selects the output signal source as the second multiplexer, so as to achieve the goal of controlling the second multiplexer. When the first multiplexer selects the output signal source as the second multiplexer, it can be realized that when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the digital signal received by the second multiplexer is transmitted to the network side device through the second multiplexer, the first multiplexer, and the electrical signal link, for the network side device to perform equalization parameter training to obtain the target equalization parameters. The internal functional module structure of the optical module provided in the embodiment of the present application does not require a new sequence generator. Through two multiplexers, after the pluggable optical module is inserted into the network-side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0073] In a possible implementation, the optical module further includes an amplifier, and the amplifier is coupled to the first multiplexer;

[0074] The first multiplexer is further configured to receive the second control signal;

[0075] The first multiplexer is further configured to control the amplifier to send the uplink transmission signal to the sending unit using the second control signal.

[0076] In an embodiment of the present application, another possible structure of the internal functional module of the above-mentioned optical module is provided. The optical module includes a sequence generator and a first multiplexer, or includes a first multiplexer and a second multiplexer, and further includes an amplifier, which is coupled to the first multiplexer. After the first multiplexer receives the second control signal, it uses the second control signal to control the amplifier to send an uplink transmission signal to the above-mentioned sending unit. Its externalization is that after the optical module receives the second control signal, it sends an uplink transmission signal to the network side device. Among them, the first multiplexer can specifically achieve control of the amplifier by selecting the output signal source as the amplifier. The first multiplexer selects the output signal source as the amplifier, which can achieve that after the network side device completes the equalization parameter training and there is an ONU signal input, the uplink transmission signal input through the amplifier is transmitted to the network side device through the first multiplexer and the electrical signal link, so that the network side device uses the target equalization parameters obtained by the equalization parameter training to equalize the uplink transmission signal. The internal functional module structure of the optical module provided in the embodiment of the present application, based on the aforementioned module structure, controls the sending of training signals and uplink transmission signals to the network side device at different stages by coupling an amplifier with a first multiplexer, so that the network side device can complete the equalization parameter training of the electrical signal link without relying on the ONU to emit light, and the equalization parameter training process does not interfere with the subsequent equalization process of the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0077] In a fourth aspect, an embodiment of the present application provides a signal equalization device, the device comprising:

[0078] a sending unit, configured to output a first control signal, wherein the first control signal is configured to instruct the optical module to send a training signal to the signal equalizing device; the signal equalizing device is connected to the optical module via an electrical signal link;

[0079] A receiving unit, configured to receive the training signal;

[0080] The training unit is used to perform equalization parameter training using the training signal to obtain target equalization parameters; the target equalization parameters are used to equalize the uplink transmission signal.

[0081] In an embodiment of the present application, after the signal equalization device sends a first control signal to the optical module, it receives a training signal sent by the optical module, and then uses the received training signal to train the equalization parameters to obtain target equalization parameters. The first control signal is used to instruct the optical module to send a training signal to the signal equalization device, and the target equalization parameters are used to equalize the subsequently received uplink transmission signal. The above-mentioned signal equalization device is connected to the optical module via an electrical signal link. The optical module is a pluggable optical module that can transmit electrical signals to the signal equalization device by inserting it into the signal equalization device and powering it on.

[0082] Compared with the current method of writing fixed equalization parameters into the device, the embodiment of the present application uses a first control signal to control the optical module to send a training signal to the signal equalization device after power-on and before transmitting the uplink control signal. The signal equalization device then uses the training signal to train the equalization parameters to obtain the target equalization parameters. This achieves the completion of the equalization parameter training of the electrical signal link after the pluggable optical module is inserted into the signal equalization device and powered on, without relying on the ONU to illuminate. The equalization parameter training process does not interfere with the subsequent process of equalizing the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the equalization parameter training efficiency and signal equalization efficiency.

[0083] In a possible implementation, the training signal is a signal generated by the optical module.

[0084] In an embodiment of the present application, a possible method is provided for the source of the training signal sent by the above-mentioned optical module. The training signal can be a signal generated by the internal functional module of the optical module itself according to the channel characteristics of the electrical signal link between the optical module and the signal equalizer. After receiving the first control signal sent by the signal equalizer, the optical module sends the above-generated training signal to the signal equalizer. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link between the signal equalizer and the optical module, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0085] In a possible implementation, the training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the signal equalization device.

[0086] In an embodiment of the present application, another possible way is provided for the source of the training signal sent by the above-mentioned optical module. The training signal can also be a signal output by the optical module when it receives a digital signal sent by the signal equalizer. The training signal can be understood as a signal that undergoes electrical excitation due to the channel characteristics of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the optical module sends the above-mentioned training signal to the signal equalizer. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link between the signal equalizer and the optical module, so that the target equalization parameters obtained by subsequent equalization parameter training using the training signal can be more accurate, thereby improving the signal equalization efficiency.

[0087] In a possible implementation manner, the sending unit is specifically configured to output the first control signal when it is detected that the optical module is inserted into the signal equalizing device and powered on.

[0088] In an embodiment of the present application, upon detecting that an optical module is inserted into the signal equalizer and powered on, the signal equalizer outputs a first control signal to control the optical module to send a training signal to the signal equalizer for equalization parameter training. By detecting the insertion and power-on status of the optical module and controlling the control signal sent thereto, the present embodiment can obtain a training signal for completing equalization parameter training even without an ONU signal input, thereby improving the efficiency of equalization parameter training and, in turn, signal equalization efficiency.

[0089] In a possible implementation, the device further includes:

[0090] The sending unit is further configured to output a second control signal, wherein the second control signal is configured to instruct the optical module to send the uplink transmission signal to the signal equalization device;

[0091] The receiving unit is further configured to receive the uplink transmission signal;

[0092] An equalization unit is configured to equalize the uplink transmission signal using the target equalization parameter.

[0093] In an embodiment of the present application, the signal equalizing device sends a second control signal to the optical module after completing the equalization parameter training, which is used to instruct the optical module to send an uplink transmission signal to the signal equalizing device. After receiving the uplink transmission signal, the signal equalizing device uses the target equalization parameters obtained by the above-mentioned equalization parameter training to perform signal equalization on the uplink transmission signal. In an embodiment of the present application, the second control signal is used to control the optical module to send an uplink transmission signal to the signal equalizing device after the signal equalization device completes the equalization parameter training, so that the signal equalization device can equalize the uplink transmission signal using the target equalization parameters. And because the control optical module sends the training signal and the uplink transmission signal to the signal equalizing device respectively at different stages, it can achieve the effect that the process of the signal equalizing device equalizing the uplink transmission signal and the above-mentioned equalization parameter training process do not interfere with each other, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system, thereby improving the equalization parameter training efficiency and the signal equalization efficiency.

[0094] In a fifth aspect, embodiments of the present application provide a signal transmitting device, comprising a processor and a communication interface; the communication interface is configured to receive or transmit signals; and the processor is configured to execute computer-executable instructions to cause the signal transmitting device to perform the method of the first aspect and any possible implementation method described above. Optionally, the signal transmitting device further comprises a memory configured to store the computer-executable instructions.

[0095] In a sixth aspect, embodiments of the present application provide a signal equalizing device, comprising a processor and a communication interface; the communication interface is configured to receive or transmit signals; and the processor is configured to execute computer-executable instructions to cause the signal equalizing device to perform the method described in the second aspect and any possible implementation method described above. Optionally, the signal transmitting device further comprises a memory configured to store the computer-executable instructions.

[0096] In the seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which is used to store instructions or computer programs; when the instructions or the computer program are executed, the method described in the first aspect and any possible implementation method is implemented, or the method described in the second aspect and any possible implementation method is implemented.

[0097] In an eighth aspect, an embodiment of the present application provides a computer program product, which includes instructions or a computer program; when the instructions or the computer program are executed, the method described in the first aspect and any possible implementation method is implemented, or the method described in the second aspect and any possible implementation method is implemented.

[0098] In the ninth aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface, and the processor is used to call and run instructions from the communication interface. When the processor executes the instructions, the chip executes the method as described in the first aspect and any possible implementation method, or executes the method as described in the second aspect and any possible implementation method.

[0099] In a tenth aspect, an embodiment of the present application provides a system, comprising at least one signal sending device as described in the third aspect or the fifth aspect, or a signal equalizing device as described in the fourth aspect or the sixth aspect, or a chip as described in the ninth aspect.

[0100] In addition, in the process of executing the method described in the first aspect and any possible embodiment, or the method described in the second aspect and any possible embodiment, the process of sending information (such as a training signal) and / or receiving information in the above method can be understood as the process of the processor outputting information, and / or the process of the processor receiving input information. When outputting information, the processor can output the information to the transceiver (or communication interface, or sending module) so that it can be transmitted by the transceiver. After the information is output by the processor, it may also need to undergo other processing before it reaches the transceiver. Similarly, when the processor receives input information, the transceiver (or communication interface, or sending module) receives the information and inputs it into the processor. Furthermore, after the transceiver receives the information, the information may need to undergo other processing before it is input into the processor.

[0101] Based on the above principles, for example, the sending of information mentioned in the above method can be understood as the processor outputting information. For another example, the receiving of information can be understood as the processor receiving input information.

[0102] Optionally, for the operations such as transmission, sending and receiving involved in the processor, if there is no special explanation, or if they do not conflict with their actual functions or internal logic in the relevant description, they can be more generally understood as processor output, reception, input and other operations.

[0103] Optionally, during implementation, the processor may be a processor specifically configured to execute these methods, or a processor that executes these methods by executing computer instructions in a memory, such as a general-purpose processor. The memory may be a non-transitory memory, such as a read-only memory (ROM), which may be integrated with the processor on the same chip or disposed on separate chips. The embodiments of the present application do not limit the type of memory or the configuration of the memory and the processor.

[0104] In a possible implementation, the at least one memory is located outside the communication device.

[0105] In yet another possible implementation, the at least one memory is located within the communication device.

[0106] In another possible implementation, part of the at least one memory is located inside the communication device, and another part of the memory is located outside the communication device.

[0107] In this application, the processor and the memory may also be integrated into one device, that is, the processor and the memory may also be integrated together.

[0108] In an embodiment of the present application, after the optical module is powered on, a control signal is used to control the optical module to send a training signal before transmitting an uplink control signal, and the training signal is used to train the equalization parameters to obtain the target equalization parameters, thereby realizing the use of the target equalization parameters for subsequent equalization of the uplink control signal, thereby improving the signal equalization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0109] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0110] Figure 1a A schematic diagram of the effect of inter-symbol interference provided in an embodiment of the present application;

[0111] Figure 1b A schematic diagram of a signal equalization effect provided by an embodiment of the present application;

[0112] Figure 2a A schematic diagram of an application scenario of a passive optical fiber network provided in an embodiment of the present application;

[0113] Figure 2b A schematic diagram of an application scenario of an uplink transmission signal provided in an embodiment of the present application;

[0114] Figure 3 A schematic diagram of a flow chart of a signal transmission method provided in an embodiment of the present application;

[0115] Figure 4 A flow chart of a signal equalization method provided in an embodiment of the present application;

[0116] Figure 5 A schematic diagram of a signal interaction process provided in an embodiment of the present application;

[0117] Figure 6 A waveform diagram of a digital signal provided in an embodiment of the present application;

[0118] Figure 7 A schematic diagram of the structure of a signal processing system provided in an embodiment of the present application;

[0119] Figure 8 A schematic structural diagram of another signal processing system provided in an embodiment of the present application;

[0120] Figure 9 A schematic structural diagram of a signal sending device provided in an embodiment of the present application;

[0121] Figure 10 A schematic diagram of the structure of a signal equalization device provided in an embodiment of the present application;

[0122] Figure 11 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0123] In order to make the purpose, technical solutions and advantages of this application clearer, the embodiments of this application will be described below in conjunction with the drawings in the embodiments of this application.

[0124] The terms "first" and "second" in the specification, claims, and drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to the process, method, product, or device.

[0125] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It will be understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0126] It should be understood that in the present application, "at least one (item)" refers to one or more, "more than one" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0127] The present application provides a signal transmission method and a signal equalization method. In order to more clearly describe the solution of the present application, some knowledge related to signal transmission and signal equalization is first introduced below.

[0128] Passive Optical Network (PON): A point-to-multipoint (P2MP) fiber optic transmission and access technology, it uses broadcast for downlink and time-division multiple access for uplink. It can be flexibly configured into tree, star, and bus topologies. Only a simple optical splitter is required at each optical branching point. This offers advantages such as conserving optical cable resources, sharing bandwidth, saving equipment room investment, expediting network deployment, and reducing overall network construction costs. As a pure dielectric network, the PON system avoids electromagnetic interference and lightning effects from external devices, reduces line and external device failure rates, improves system reliability, and reduces maintenance costs. It is a technology long anticipated by telecommunications maintenance departments.

[0129] The three main components of a PON system are the optical line terminal (OLT) at the central office, the optical network unit (ONU) at the terminal, and the optical distribution network (ODN). The "passive" in a PON system refers to the lack of any power-consuming electronic devices between the OLT and the ONU. Components used, such as optical fibers and optical splitters, are passive, hence the name "passive optical network." In a PON system, a single OLT can host multiple PON units, each forming an independent PON network. These units are connected to various types of optical network terminals (ONTs) via inexpensive splitters and optical fiber distribution. An ONT can be considered an ONU, but strictly speaking, it is a component of the ONU. The difference between the two is that an ONT is an optical network terminal and resides directly at the user end, while an ONU is an optical network unit and may have other networks between it and the user. For example, an ONU can connect to a gateway device with an Ethernet access point, which in turn connects to an ONT.

[0130] The Optical Line Terminal (OLT) is a core component of the optical access network, equivalent to a switch or router in traditional communications networks. It also serves as a multi-service provisioning platform. Typically located at the central office, it provides a fiber interface to the user's passive optical network. Its primary functions include: broadcasting Ethernet data to the optical network units (ONUs); initiating and controlling ranging processes and recording ranging information; and allocating bandwidth to the ONUs, controlling the start time and send window size of data transmission.

[0131] An Optical Network Unit (ONU) is a device that terminates optical fibers in a fiber-optic access network, providing multiple service interfaces to users. Its network-side interface is optical, while the user-side interface is electrical. Therefore, the ONU must perform optical-to-electrical and electrical-to-optical conversion, as well as digital-to-analog and analog-to-digital conversion for voice signals, multiplexing, signaling processing, and maintenance management. Its primary functions include: selectively receiving broadcast data sent by the OLT; responding to ranging and power control commands issued by the OLT and making corresponding adjustments; and buffering user Ethernet data and sending it upstream within the OLT-assigned transmission window.

[0132] Intersymbol Interference (ISI): Also known as intersymbol crosstalk (ISI). The waveform of a rectangular pulse is sharp in the time domain, and therefore occupies an infinite bandwidth in the frequency domain. If this pulse is passed through a low-pass filter, narrowing its frequency, it will inevitably become wider in the time domain. Because pulses are a sequence, adjacent pulses will interfere with each other, a phenomenon known as intersymbol interference (ISI). Since the channel is always band-limited, it expands the pulse waveform passing through it. When the channel bandwidth is much larger than the pulse bandwidth, the pulse expansion is minimal. When the channel bandwidth approaches the signal bandwidth, the expansion exceeds one symbol period, causing signal pulse overlap, a phenomenon known as intersymbol interference (ISI). ISI is the most important interference in digital communication systems, besides noise. Unlike additive noise, it is multiplicative interference. There are many causes of ISI. In fact, as long as the transmission channel has a limited frequency band, some ISI will occur.

[0133] Signal equalization: Equalization involves the receiver's equalizer generating characteristics opposite to those of the channel to counteract the intersymbol interference (ISI) caused by the channel's time-varying multipath propagation. In bandwidth-limited channels, ISI due to multipath can distort the transmitted signal, leading to bit errors during reception. ISI is a major obstacle to high-speed data transmission in mobile wireless communication channels, and equalization is an effective means of combating it. The random and time-varying nature of mobile fading channels requires an equalizer that can track the channel's time-varying characteristics in real time. This type of equalizer is called an adaptive equalizer.

[0134] Signal equalization can be divided into two approaches: frequency domain equalization, which ensures that the overall transfer function of the entire system, including the equalizer, meets the requirements for distortion-free transmission. This approach often corrects the amplitude-frequency characteristic and group delay characteristics separately. Sequence equalization often employs this frequency domain equalization approach. Time domain equalization, on the other hand, directly considers the time response and ensures that the impulse response of the entire system, including the equalizer, meets the requirements for zero intersymbol interference.

[0135] The adaptive equalizer has two operating modes: training mode and tracking mode. In training mode, the transmitter transmits a known, fixed-length training sequence so that the equalizer at the receiver can make the correct settings. The training sequence is generally a binary pseudo-random signal or a series of pre-specified data bits, followed by the user data. The equalizer at the receiver will use a recursive algorithm to evaluate the channel characteristics and modify the filter coefficients to compensate for the channel. When designing the training sequence, it is required that the equalizer can obtain the correct filter coefficients through this sequence even under the worst channel conditions. In this way, after receiving the training sequence, the filter coefficients of the equalizer are close to the optimal value. In tracking mode, when processing user data, the equalizer's adaptive algorithm can track the changing channel. As a result, the adaptive equalizer continuously changes its filter characteristics.

[0136] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0137] See also Figure 1a , Figure 1a A schematic diagram of the effect of inter-symbol interference provided in an embodiment of the present application. In a digital communication system, due to the influence of the transmission channel attenuation, the signal will produce serious inter-symbol interference (ISI for short) at the receiving end, resulting in an increase in the bit error rate. As the signal transmission rate increases, the inter-symbol interference problem will become more serious. In order to overcome inter-symbol interference and improve the transmission performance of the digital communication system, it is generally necessary to adopt signal equalization technology at the signal receiving end. Signal equalization technology refers to the technology of equalizing the signal by the receiver / transmitter according to the characteristics of the transmission channel, that is, the equalizer of the receiver / transmitter produces characteristics opposite to the characteristics of the transmission channel, which are used to reduce or eliminate the inter-symbol interference caused by the propagation characteristics of the transmission channel. As Figure 1a As shown in the figure, the square wave signal A describes the signal sent by the transmitter. Due to the influence of the transmission channel propagation characteristics, a tail waveform is generated at the signal receiving end, causing the subsequent three bit levels of the transmitted signal to be raised, that is, inter-symbol interference is generated on the subsequent three bit levels. If at the signal transmitting end, according to the ISI amplitude caused by the transmission channel propagation characteristics of the square wave signal A, the transmitted square wave signal A is properly processed, so that the square wave signal A has a negative tail (such as Figure 1a The square wave signal B) shown in the figure can offset the ISI amplitude of the square wave signal A at the receiving end caused by the propagation characteristics of the transmission channel. This is the basic principle of signal equalization.

[0138] Finite Impulse Response (FIR) digital filters are often used in digital communication engineering to achieve signal equalization. The following uses the aforementioned square wave signal A as an example to illustrate the process of obtaining square wave signal B from square wave signal A.

[0139] See also Figure 1b , Figure 1b This is a schematic diagram of the effect of signal equalization provided by the embodiment of the present application. Figure 1b As shown, the square wave signal A is input into the FIR digital filter. The FIR digital filter includes a process of "delay-weighting-summing". By properly adjusting the weighting coefficients of the four taps (Tap1, Tap2, Tap3 and Tap4), the input square wave signal A can be filtered to obtain a negative tail waveform (i.e., the square wave signal B), thereby offsetting the positive tail of the square wave signal A caused by the propagation characteristics of the transmission channel, thereby eliminating the ISI phenomenon. The above process of obtaining equalization parameters (i.e. Figure 1b The weighted coefficients of each tap in ) are called balanced convergence.

[0140] See also Figure 2a , Figure 2a This is a schematic diagram of an application scenario of a passive optical fiber network provided in an embodiment of the present application. Figure 2a As shown in the figure, in a point-to-multipoint passive optical network (PON) system, an OLT and multiple ONUs communicate and interact via several passive optical fiber splitters, enabling internet access for multiple ONUs. This is the current mainstream technology for broadband access. PON uses time-division multiplexing (TDM) / time-division multiple access (TDMA) technology to enable communication between a single OLT and multiple ONUs. For downstream signal transmission, the OLT continuously transmits light, which is then distributed to different ONUs in different time slots, thus achieving downstream multiplexing. For upstream signal transmission, the OLT specifies that a specific ONU transmit light in a specific time slot, thus achieving upstream multiplexing. Therefore, in a PON system, the optical signals of the upstream ONU are transmitted in bursts, while the OLT receives them in bursts, meaning that upstream signal transmission operates in a burst transmission mode.

[0141] See also Figure 2b , Figure 2b Schematic diagram of an application scenario of an uplink transmission signal provided in an embodiment of the present application. Figure 2bAs shown, in the uplink signal transmission mode, the uplink may consist of many ONU optical packets of varying power and length. For example, the ONU at end user 1, the ONT at end user 2, and the ONU at end user n together form an optical packet. This packet is buffered by a passive optical splitter (PFS), which then sends the buffered data upstream within the transmit window allocated by the OLT. This buffered data represents the uplink transmission signal published by a specific ONU. For example, the uplink transmission signals published by the ONU at end user 1 are signals A and B, the uplink transmission signals published by the ONT at end user 2 are signals C and D, and the uplink transmission signals published by the ONU at end user n are signals E and F.

[0142] With the continuous evolution of PON technology, it has evolved from GPON to 10G PON and will gradually evolve to 50G PON. As transmission rates gradually increase, the signal transmission between optical modules and OLT boards in PON systems is increasingly affected by the propagation characteristics of the transmission channel, creating an urgent need for channel equalization suitable for burst signal transmission in PON systems. Currently, technicians commonly use fixed parameter methods and adaptive algorithms to find target equalization parameters for burst signal transmission in PON systems.

[0143] The fixed parameter method is that during the equipment development process, development engineers conduct R&D and preliminary testing to find the optimal equalization parameters, and then write them into the equipment to achieve equalization compensation. Currently, most products with a rate of 10G and below use this method for channel equalization. However, for the application scenarios of pluggable optical modules, the differences in the parasitic parameters of different ports of the pluggable optical modules and the differences in channel characteristics will have a more obvious impact on signal equalization as the transmission rate increases. If the fixed parameter method is still used, after the OLT board replaces the optical module, the equalization parameters previously fixed in the device will not be optimal, and the performance requirements of signal equalization cannot be met in high-speed transmission scenarios such as 25G rates.

[0144] The adaptive algorithm is that the transmitter sends a training message of a known fixed length, and the receiver uses it to train the equalization parameters after receiving the training message, thereby training the optimal target equalization parameters. Although this method is not affected by the consistency issues such as the differences in parasitic parameters of different ports and differences in channel characteristics brought about by the application scenarios of pluggable optical modules, the dynamic tracking of the equalization parameter training process requires longer training messages for training. PON is a P2MP system. The newly connected ONU needs to open a window to register and establish a communication relationship with the OLT before it can be controlled to send the specified data in the upstream direction within the sending window allocated by the OLT. Otherwise, it will cause signal transmission conflicts between different ONUs, and then cause communication failure. In the GPON system, when the OLT opens the upstream window, the ONU's message length does not exceed 125us (generally less than 1us), which cannot meet the adaptive equalization of the continuous message length of about 10ms required for the dynamic tracking of the equalization parameter training process. In other words, it cannot meet the application scenario of upstream signal burst transmission in the high-speed PON system.

[0145] In response to the problems existing in the above-mentioned fixed parameter method and adaptive algorithm, the embodiments of the present application provide a signal sending method and a signal equalization method. After the optical module is powered on, the optical module is controlled by a control signal to send a training signal before transmitting the uplink control signal, and the training signal is used to train the equalization parameters to obtain the target equalization parameters, thereby realizing the use of the target equalization parameters for the subsequent equalization of the uplink control signal. Through the embodiments of the present application, it is not only free from the consistency problems such as the differences in parasitic parameters of different ports and the differences in channel characteristics brought about by the application scenarios of pluggable optical modules, but also can meet the above-mentioned adaptive equalization of the continuous message length required for dynamic tracking of the equalization parameter training process, solves the problem of dynamic equalization parameter training in the application scenario of uplink signal burst transmission in high-speed PON systems, and improves the signal equalization efficiency.

[0146] See also Figure 3 , Figure 3 A flow chart of a signal transmission method provided in an embodiment of the present application is provided, and the method includes but is not limited to the following steps:

[0147] Step 301: The optical module receives a first control signal.

[0148] The optical module receives a first control signal from a network-side device, which instructs the optical module to send a training signal to the network-side device. The optical module is connected to the network-side device via an electrical signal link. The optical module is pluggable and can transmit electrical signals to the network-side device when plugged in and powered on.

[0149] The optical module in the embodiment of the present application is an optoelectronic device that performs photoelectric and electro-optical conversion. The transmitting end of the optical module converts the electrical signal into an optical signal, and the receiving end converts the optical signal into an electrical signal. The network-side device in the embodiment of the present application is a device equipped with a processor that can be used to execute computer instructions. The network-side device can be a computer, a controller, etc., and can specifically be an OLT device, such as an OLT board, which provides a fiber optic interface for a user-oriented passive optical fiber network, used to send Ethernet data to the ONU in a broadcast manner, and allocate bandwidth to the ONU, that is, control the start time and send window size of the ONU to send data, so as to realize the point-to-multipoint optical transmission and access function of the PON system.

[0150] Step 302: The optical module sends a training signal.

[0151] After receiving the first control signal, the optical module sends a training signal to the network side device. The training signal is a signal used by the network side device to perform equalization parameter training.

[0152] The training signal may be a signal generated by an internal functional module of the optical module itself according to the transmission channel propagation characteristics of the electrical signal link. After receiving the first control signal, the optical module sends the generated training signal to the network side device.

[0153] Alternatively, the training signal may be a signal output by the optical module when it receives a digital signal. The training signal can be understood as a signal that undergoes electrical excitation due to the propagation characteristics of the transmission channel of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the optical module transmits the training signal to the network-side device. In this case, in step 301, in addition to receiving the first control signal, the optical module also needs to receive the digital signal sent by the network-side device to output the training signal.

[0154] The training signal obtained in the embodiment of the present application carries the propagation characteristics of the transmission channel of the electrical signal link, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency. Furthermore, the training signal obtained in the embodiment of the present application is sent to the network side device, which is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. After the pluggable optical module is inserted into the network side device and powered on, the equalization parameter training of the electrical signal link can be completed without relying on the ONU to emit light, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the training efficiency of the equalization parameters. In addition, using the above-mentioned target equalization parameters to equalize the subsequent uplink transmission signal can also improve the signal equalization efficiency.

[0155] In addition, the optical module will also receive a second control signal sent by the network side device, and send an uplink transmission signal to the network side device when there is a signal input to the ONU. The second control signal is sent by the network side device to the optical module after completing the equalization parameter training, and is used to instruct the optical module to send the uplink transmission signal to the network side device, and then the network side device can use the target equalization parameters obtained by the equalization parameter training to equalize the uplink transmission signal sent by the optical module. The embodiment of the present application can control the process of the optical module sending the uplink transmission signal to the network side device and the process of the optical module sending the training signal to the network side device through the second control signal, which respectively occur at different stages of signal transmission, so as to achieve the equalization parameter training process and the subsequent equalization process of the uplink transmission signal without interfering with each other, thereby improving the training efficiency of the equalization parameters and the signal equalization efficiency.

[0156] On the other hand, the embodiment of the present application also provides a possible structural implementation of the internal functional modules of the optical module. Because the above signal transmission method is applied to the optical module, the signal transmission method will be further described below in conjunction with the structure of the internal functional modules of the optical module.

[0157] In one possible embodiment, the optical module includes a sequence generator and a first multiplexer, and the sequence generator and the first multiplexer are coupled. After the first multiplexer receives the above-mentioned first control signal, it uses the first control signal to control the sequence generator to send a training signal generated by the sequence generator to the network side device. Its externalization is that after the optical module receives the first control signal, it sends a training signal to the network side device. Among them, the first multiplexer can specifically achieve control of the sequence generator by selecting the output signal source as the sequence generator. The first multiplexer selects the output signal source as the sequence generator, which can achieve the situation that when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the training signal generated by the sequence generator is transmitted to the network side device through the first multiplexer and the electrical signal link, and is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. The optical module in the embodiment of the present application, by adding an internal sequence generator, completes the equalization parameter training of the electrical signal link after the pluggable optical module is inserted into the network side device and powered on, without relying on the ONU to emit light, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0158] In another possible embodiment, the optical module includes a first multiplexer and a second multiplexer, the first multiplexer and the second multiplexer being coupled. After receiving the first control signal, the first multiplexer uses the first control signal to control the second multiplexer to send a training signal to the network-side device. The training signal is a signal output by the first multiplexer when the second multiplexer receives a digital signal, and the digital signal is sent by the network-side device to the second multiplexer. This is manifested as the optical module sending a training signal to the network-side device after receiving the first control signal and the digital signal. Specifically, the first multiplexer can control the second multiplexer by selecting the second multiplexer as the output signal source. The first multiplexer selects the second multiplexer as the output signal source, so that when the optical module is just inserted into the network-side device and powered on, and there is no ONU signal input, the digital signal received by the second multiplexer is transmitted to the network-side device through the second multiplexer, the first multiplexer, and the electrical signal link, for the network-side device to perform equalization parameter training to obtain the target equalization parameters. The optical module in the embodiment of the present application does not require an internal new sequence generator. Through two multiplexers, after the pluggable optical module is inserted into the network side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0159] Furthermore, based on the internal functional module structure of the optical module provided in the above possible implementation manner, the optical module also includes an amplifier, which is coupled to the first multiplexer. After the first multiplexer receives the second control signal, it uses the second control signal to control the amplifier to send an uplink transmission signal to the network side device. Its externalization is that after the optical module receives the second control signal, it sends an uplink transmission signal to the network side device. Among them, the first multiplexer can specifically achieve control of the amplifier by selecting the output signal source as the amplifier. The first multiplexer selects the output signal source as the amplifier, which can achieve that after the network side device completes the equalization parameter training and there is an ONU signal input, the uplink transmission signal input through the amplifier is transmitted to the network side device through the first multiplexer and the electrical signal link, so that the network side device uses the target equalization parameters obtained by the equalization parameter training to equalize the uplink transmission signal. The optical module in the embodiment of the present application, based on the aforementioned functional module structure, controls the sending of training signals and uplink transmission signals to the network side device at different stages by coupling an amplifier with a first multiplexer, so that the network side device can complete the equalization parameter training of the electrical signal link without relying on the ONU to emit light, and the equalization parameter training process does not interfere with the subsequent equalization process of the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the efficiency of equalization parameter training and signal equalization.

[0160] See also Figure 4 , Figure 4 A flow chart of a signal equalization method provided in an embodiment of the present application is provided, and the method includes but is not limited to the following steps:

[0161] Step 401: The network-side device outputs a first control signal.

[0162] Upon detecting that the optical module is plugged into the network-side device and powered on, the network-side device outputs a first control signal that instructs the optical module to send a training signal to the network-side device. The network-side device is connected to the optical module via an electrical signal link. The optical module is pluggable and can transmit electrical signals to the network-side device when plugged into and powered on.

[0163] The network-side device in the embodiments of the present application is a device equipped with a processor that can be used to execute computer-executable instructions. The network-side device can be a computer, a controller, etc., and can specifically be an OLT device, such as an OLT board, which provides a fiber optic interface for a user-oriented passive optical fiber network, is used to send Ethernet data to the ONU in a broadcast manner, and allocate bandwidth to the ONU, that is, control the start time and send window size of the ONU to send data, so as to realize the point-to-multipoint optical transmission and access function of the PON system. The optical module in the embodiments of the present application is an optoelectronic device that performs photoelectric and electro-optical conversion. The transmitting end of the optical module converts the electrical signal into an optical signal, and the receiving end converts the optical signal into an electrical signal.

[0164] Step 402: The network-side device receives a training signal.

[0165] After sending the first control signal, the network side device receives a training signal sent by the optical module. The training signal is a signal used by the network side device to perform equalization parameter training.

[0166] The training signal may be a signal generated by an internal functional module of the optical module itself according to the transmission channel propagation characteristics of the electrical signal link. After receiving the first control signal, the optical module sends the generated training signal to the network side device.

[0167] Alternatively, the training signal may be a signal output by the optical module when it receives a digital signal. The training signal may be understood as a signal that undergoes electrical excitation due to the propagation characteristics of the transmission channel of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the optical module sends the training signal to the network-side device. In this case, in step 401, in addition to sending the first control signal, the network-side device also needs to send a digital signal to the optical module to obtain the training signal output by the optical module.

[0168] The training signal obtained in the embodiment of the present application carries the propagation characteristics of the transmission channel of the electrical signal link, so that the target equalization parameters obtained by subsequent equalization parameter training using the training signal can be more accurate, thereby improving signal equalization efficiency.

[0169] Step 403: The network-side device performs equalization parameter training using the training signal to obtain target equalization parameters.

[0170] After receiving the training signal, the network side device uses the training signal to perform equalization parameter training to obtain target equalization parameters. The target equalization parameters are used to equalize subsequently received uplink transmission signals.

[0171] The embodiments of the present application can complete equalization parameter training for electrical signal links without relying on ONU light emission, thereby solving the problem of dynamic equalization parameter training for bursty electrical signal links in high-speed PON systems and improving the efficiency of equalization parameter training. Furthermore, using the target equalization parameters to equalize subsequent uplink transmission signals can further improve signal equalization efficiency.

[0172] In addition, after completing the equalization parameter training, the network side device also sends a second control signal to the optical module, and the second control signal is used to instruct the optical module to send an uplink transmission signal to the network side device when there is a signal input from the ONU. After the network side device receives the uplink transmission signal sent by the optical module, it uses the target equalization parameter obtained by the equalization parameter training to equalize the uplink transmission signal. The embodiment of the present application can control the process of the network side device receiving the uplink transmission signal and the process of the network side device receiving the training signal through the second control signal, which occur at different stages of signal transmission respectively, so as to achieve the equalization parameter training process and the subsequent equalization process of the uplink transmission signal without interfering with each other, thereby improving the training efficiency of the equalization parameters and the signal equalization efficiency.

[0173] See also Figure 5 , Figure 5 A schematic diagram of a signal interaction process provided in an embodiment of the present application.

[0174] like Figure 5 As shown, an OLT board and multiple ONUs (ONU1, ONU2, etc.) communicate and interact via several passive fiber optic splitters, enabling Internet access for multiple ONUs. Because the OLT board transmits electrical signals and the ONUs transmit optical signals, the OLT board also requires an optical module for optical-to-electrical and electrical-to-optical conversion. The OLT board is connected to this optical module via an electrical signal link. This optical module is pluggable and can transmit electrical signals to the OLT board by inserting it into the board and powering it on. The transmitting end of this optical module converts electrical signals into optical signals, and the receiving end converts optical signals into electrical signals, thereby enabling communication and interaction between the OLT board and the ONUs.

[0175] When the OLT board detects that an optical module has been inserted and powered on (see step 501), it sends a first control signal to the optical module (see step 502). This first control signal is used to instruct the optical module to send a training signal to the OLT board. After receiving the first control signal, the optical module sends a training signal to the OLT board (see step 504). The OLT board uses the training signal to train equalization parameters and obtain target equalization parameters (see step 505). The target equalization parameters are used to equalize the subsequently input uplink transmission signal. The training signal sent by the optical module can be a signal generated by an internal functional module of the optical module itself based on the transmission channel propagation characteristics of the electrical signal link. After receiving the first control signal, the optical module sends the generated training signal to the OLT board. The training signal can also be a signal output by the optical module when it receives a digital signal sent by the OLT board. This training signal can be understood as a signal that undergoes electrical excitation due to the propagation characteristics of the transmission channel of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving this digital signal and the first control signal, the optical module sends the training signal to the OLT board. Therefore, in this case, in addition to sending the first control signal to the optical module, the OLT board also needs to send the digital signal to the optical module (see step 503).

[0176] The communication interaction between the above-mentioned OLT board and the optical module is completed shortly after the optical module is inserted into the OLT board and powered on, and when there is no ONU signal input. When the OLT board completes the equalization parameter training and there is an ONU signal input, that is, one or more ONUs at this time have a signal published (see step 506), the receiving end of the optical module converts the optical signal published by the specific ONU into an electrical signal, and after receiving the second control signal, sends the electrical signal (i.e., the uplink transmission signal) to the OLT board (see step 508). The second control signal is a control signal sent by the OLT board to the optical module (see step 507), which is used to instruct the optical module to send an uplink transmission signal to it, so as to achieve the purpose of equalizing the uplink transmission signal using the target equalization parameters obtained by the equalization parameter training (see step 509).

[0177] In the embodiments of the present application, the signal equalization method on the OLT board side and the signal sending method on the optical module side can enable the OLT board to complete the equalization parameter training of the electrical signal link without relying on the ONU to emit light, and the equalization parameter training process does not interfere with the subsequent equalization process of the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the equalization parameter training efficiency and signal equalization efficiency.

[0178] Specifically, the digital signal in step 503 can be found in Figure 6 , Figure 6 A waveform diagram of a digital signal provided in an embodiment of the present application. Figure 6 As shown, the digital signal described in the embodiment of the present application is a square wave signal with high level and low level appearing alternately. The digital signal may include data segments or data blocks. In the digital signal, "0" corresponds to low level and "1" corresponds to high level. Figure 6 For example, consider a digital signal: The first time period is low level "0," the second time period is high level "1," the third time period is low level "0," the fourth time period is low level "0," and the fifth time period is high level "1." The sum of these five time periods can be considered a cycle. The corresponding levels for these five time periods will repeat in the next cycle, allowing for the periodic transmission of the same data segment or block. It's important to note that the high and low levels in a digital signal don't correspond to specific voltage values, but rather to two voltage ranges.

[0179] See also Figure 7 , Figure 7 A schematic diagram of the structure of a signal processing system provided in an embodiment of the present application.

[0180] like Figure 7 As shown, the system includes an OLT board and a pluggable optical module, and the OLT board and the pluggable optical module are connected via an electrical signal link. Specifically, the OLT board includes a media access control (MAC) chip and a serializing / deserializing circuitry (SerDes) interface. The MAC chip is used to control the OLT board to send and receive signals, and the SerDes interface is used to transmit electrical signals to achieve communication interaction with the pluggable optical module. The pluggable optical module includes a first multiplexer MUX1, a sequence generator, and an amplifier. The sequence generator is coupled to the first multiplexer MUX1, and the amplifier is coupled to the first multiplexer MUX1. The first multiplexer MUX1 controls the signal transmission of the pluggable optical module by selecting the output signal source as the sequence generator or the amplifier.

[0181] exist Figure 7In the signal processing system shown, after detecting that the pluggable optical module is plugged into the OLT board and powered on, the MAC chip in the OLT board sends a first control signal to the pluggable optical module, instructing the pluggable optical module to send a training signal to the OLT board. After receiving the first control signal, the first multiplexer MUX1 in the pluggable optical module selects the output signal source as the sequence generator, thereby controlling the sequence generator to generate a training signal based on the transmission channel propagation characteristics of the electrical signal link, and sends the training signal to the OLT board through the first multiplexer MUX1 and the SerDes interface. After receiving the training signal, the MAC chip in the OLT board performs equalization parameter training based on the training signal to obtain the target equalization parameters. After completing the equalization parameter training, the MAC chip sends a second control signal to the pluggable optical module, instructing the pluggable optical module to send an uplink transmission signal to the OLT board. After receiving the second control signal, the first multiplexer MUX1 in the pluggable optical module selects the amplifier as the output signal source, thereby controlling the uplink transmission signal received by the amplifier to be sent to the OLT board through the first multiplexer MUX1 and the SerDes interface. Specifically, the amplifier can be a limiting amplifier (LA) or a trans-impedance amplifier (TIA). After receiving the uplink transmission signal, the MAC chip uses the target equalization parameters obtained from the training to equalize the uplink transmission signal.

[0182] See also Figure 8 , Figure 8 A schematic diagram of the structure of another signal processing system provided in an embodiment of the present application.

[0183] like Figure 8 As shown, the system includes an OLT board and a pluggable optical module, and the OLT board and the pluggable optical module are connected via an electrical signal link. Specifically, the OLT board includes a MAC chip, a first interface SerDes1, and a second interface SerDes2. The MAC chip is used to control the OLT board to send and receive signals, and the first interface SerDes1 and the second interface SerDes2 are used to transmit electrical signals to achieve communication interaction with the pluggable optical module. The pluggable optical module includes a first multiplexer MUX1, a second multiplexer MUX2, and an amplifier. The second multiplexer MUX2 is coupled to the first multiplexer MUX1, and the amplifier is coupled to the first multiplexer MUX1. The first multiplexer MUX1 controls the signal transmission of the pluggable optical module by selecting the output signal source as the second multiplexer MUX2 or the amplifier.

[0184] exist Figure 8In the signal processing system shown, after detecting that a pluggable optical module is plugged into the OLT board and powered on, the MAC chip in the OLT board sends a first control signal to the pluggable optical module, instructing the pluggable optical module to send a training signal to the OLT board. Furthermore, a digital signal is sent to the pluggable optical module via the first interface SerDes1. After receiving the first control signal, the first multiplexer MUX1 in the pluggable optical module selects the output signal source as the second multiplexer MUX2, thereby controlling the training signal output by the second multiplexer MUX2 upon receiving the digital signal, and sending the training signal to the OLT board via the first multiplexer MUX1 and the second interface SerDes2. After receiving the training signal, the MAC chip in the OLT board performs equalization parameter training based on the training signal to obtain target equalization parameters. After completing the equalization parameter training, the MAC chip sends a second control signal to the pluggable optical module, instructing the pluggable optical module to send an uplink transmission signal to the OLT board. After receiving the second control signal, the first multiplexer MUX1 in the pluggable optical module selects the amplifier as the output signal source, thereby controlling the uplink transmission signal received by the amplifier to be sent to the OLT board through the first multiplexer MUX1 and the second interface SerDes2. Specifically, the amplifier can be an LA or TIA. After receiving the uplink transmission signal, the MAC chip equalizes the uplink transmission signal using the target equalization parameters obtained through the training.

[0185] Specifically, in a baseband system, in order to suppress and eliminate the influence of inter-symbol interference, inserting an adjustable digital filter can play a role in compensating the phase-frequency and amplitude-frequency characteristics of the system. The process of correcting the phase-frequency and amplitude-frequency characteristics of the system is called equalization, and the adjustable digital filter that achieves equalization is called an equalizer (as mentioned above). Figure 1b shown).

[0186] An equalizer primarily consists of a set of tapped delay lines. The delay between adjacent taps is the symbol width. The output of each tap is weighted by a variable gain amplifier before being output. Therefore, when the input is a distorted waveform, the adder output signal can minimize crosstalk with other symbol waveforms. Theoretically, only an infinitely long equalizer can completely correct the distorted waveform. In practice, a symbol waveform in a channel typically only causes crosstalk with a few adjacent symbols. The more taps an equalizer has, the better the equalization effect. However, the greater the number of taps, the more complex the equalization implementation, so the number of taps should be determined based on the actual situation. Equalizers are structurally categorized as linear or nonlinear. Linear equalizers are placed at the front end of a receiver to compensate for high-frequency distortion in the channel. The advantage of linear equalization is that it remains effective even when the eye diagram is completely closed, but the disadvantage is that it amplifies high-frequency noise. Nonlinear equalization requires a somewhat open eye diagram but does not amplify high-frequency noise. Currently, the two most commonly used equalizers are feed-forward equalizers (FFE) and decision feedback equalization (DFE). Among them, FFE is a linear equalizer, and DFE is a typical nonlinear equalizer.

[0187] The above-mentioned equalization parameter training and signal equalization implementation both rely on the equalizer. The following will take the implementation of equalization parameter training as an example to illustrate.

[0188] When training equalizer parameters, the Zero Forcing Edge (ZFE) algorithm is used to obtain the target parameters. This algorithm searches for specific data patterns in the received training signal and determines the direction of parameter adjustment based on the difference between the ideal and actual equalization results. It is a heuristic, iterative algorithm with fast convergence.

[0189] Under ideal equalization conditions, the training signal's edge should cross zero exactly, and the number of 0s and 1s in the judgment result should be roughly the same, meaning the probability of the judgment result being 0 or 1 is the same. However, due to intersymbol interference (ISI), the waveform overlap between pulses prevents the edge from crossing zero exactly, and the receiver's judgment result may be either 1 or 0. If over- or under-equalization occurs, the number of 0s and 1s in the receiver's judgment result will be unbalanced. The edge-zero-forcing algorithm determines the direction of equalization parameter adjustment based on the data pattern at the receiver. In the case of a rising edge, if the data pattern indicates undercompensation, the equalizer gain needs to be increased. Conversely, if the data pattern indicates overcompensation, the equalizer gain needs to be decreased. The method of adjusting equalization parameters using the edge-zero-forcing algorithm also applies to falling edges.

[0190] Each iteration of the edge-zero-forcing algorithm only requires adding or subtracting one from the equalization coefficient, making it simple to implement. However, due to various interference factors, the error signal fluctuates continuously, making it generally impossible to determine the adjustment direction of the equalization parameters based on a single error detection result. The equalization parameters tend to converge in a certain direction, so the adjustment direction of the equalization parameters, that is, whether to add or subtract one from the equalization coefficient, can only be determined after collecting a certain number of data patterns with the same adjustment direction. The convergence condition of the edge-zero-forcing algorithm is whether the probability of the edge decision result being 0 or 1 is equal. The edge-zero-forcing algorithm has a simple structure and low resource consumption, requiring only the addition and subtraction operations of the equalization coefficient. It does not make assumptions about the behavior of the transmitter or the characteristics of the channel, making it universally applicable. It can reduce the mutual influence between the adaptive algorithms of the feedforward equalizer and the decision feedback equalizer at the receiver, allowing the receiver to calculate the equalization parameters of the decision feedback equalizer after the feedforward equalizer updates the equalization parameters.

[0191] The above describes in detail the method of the embodiment of the present application. The following provides an apparatus of the embodiment of the present application.

[0192] See also Figure 9 , Figure 9 This is a schematic diagram of the structure of a signal sending device provided in an embodiment of the present application. The signal sending device 90 is applied to an optical module. The signal sending device 90 may include a receiving unit 901 and a sending unit 902. The description of each unit is as follows:

[0193] The receiving unit 901 is configured to receive a first control signal, wherein the first control signal is configured to instruct the signal sending device to send a training signal to a network-side device; the signal sending device is connected to the network-side device via an electrical signal link;

[0194] The sending unit 902 is configured to send the training signal, where the training signal is a signal used by the network side device to perform equalization parameter training.

[0195] In an embodiment of the present application, after receiving a first control signal, the signal transmitting device transmits a training signal to the network-side device. The first control signal is sent by the network-side device to the signal transmitting device to instruct the signal transmitting device to transmit the training signal to the network-side device. The training signal is a signal used by the network-side device to perform equalization parameter training. The above-mentioned signal transmitting device is connected to the network-side device via an electrical signal link. The signal transmitting device is a pluggable signal transmitting device that can transmit electrical signals to the network-side device by being inserted into the network-side device and powered on.

[0196] Compared with the current method of writing fixed equalization parameters into the device, the embodiment of the present application uses a first control signal to control the signal sending device to send a training signal to the network side device after power-on and before transmitting the uplink control signal. The training signal is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. After the pluggable signal sending device is inserted into the network side device and powered on, the equalization parameter training of the electrical signal link can be completed without relying on the ONU to emit light, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0197] In a possible implementation manner, the training signal is a signal generated by the signal sending device;

[0198] Alternatively, the training signal is a signal output by the signal sending device when receiving a digital signal, and the digital signal is sent to the signal sending device by the network side device.

[0199] In an embodiment of the present application, two different methods are provided for the source of the training signal sent by the above-mentioned signal sending device. The training signal can be a signal generated by the internal functional module of the signal sending device itself according to the channel characteristics of the electrical signal link. After receiving the above-mentioned first control signal, the signal sending device sends the above-mentioned generated training signal to the network side device. Alternatively, the training signal can also be a signal output by the signal sending device when it receives a digital signal. The training signal can be understood as a signal that is electrically excited due to the channel characteristics of the electrical signal link after the digital signal received by the signal sending device is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the signal sending device sends the above-mentioned training signal to the network side device. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0200] In a possible implementation, the receiving unit 901 is further configured to receive a second control signal, where the second control signal is used to instruct the signal sending device to send an uplink transmission signal to the network-side device;

[0201] The sending unit 902 is further configured to send the uplink transmission signal, where the uplink transmission signal is a signal equalized using target equalization parameters, and the target equalization parameters are obtained by performing equalization parameter training using the training signal.

[0202] In an embodiment of the present application, after receiving the second control signal, the signal sending device sends an uplink transmission signal to the network side device. The second control signal is sent by the network side device to the signal sending device when the equalization parameter training is completed, and is used to instruct the signal sending device to send the uplink transmission signal to the network side device. The uplink transmission signal is a signal that the network side device equalizes using the target equalization parameters. The target equalization parameters are equalization parameters obtained by the network side device using the training signal sent by the signal sending device to perform equalization parameter training. In the embodiment of the present application, the second control signal is used to control the signal sending device to send an uplink transmission signal to the network side device after the network side device completes the equalization parameter training. This can enable the network side device to equalize the uplink transmission signal using the target equalization parameters, thereby improving the signal equalization efficiency.

[0203] In a possible implementation, the optical module includes a sequence generator and a first multiplexer, and the sequence generator is coupled to the first multiplexer;

[0204] The first multiplexer is configured to receive the first control signal transmitted by the receiving unit 901;

[0205] The first multiplexer is further configured to control the sequence generator to send the training signal to the sending unit 902 using the first control signal, where the training signal is generated by the sequence generator.

[0206] In an embodiment of the present application, a possible internal functional module structure of the above-mentioned optical module is provided. The optical module includes a sequence generator and a first multiplexer, and the sequence generator and the first multiplexer are coupled. After the first multiplexer receives the first control signal transmitted by the above-mentioned receiving unit, it uses the first control signal to control the sequence generator to send the training signal generated by the sequence generator to the above-mentioned sending unit. Its externalization is that after the optical module receives the first control signal, it sends a training signal to the network side device. Among them, the first multiplexer can specifically achieve control of the sequence generator by selecting the output signal source as the sequence generator. The first multiplexer selects the output signal source as the sequence generator, which can achieve the following situation: when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the training signal generated by the sequence generator is transmitted to the network side device through the first multiplexer and the electrical signal link, and is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. The internal functional module structure of the optical module provided in the embodiment of the present application, by adding a sequence generator, realizes that after the pluggable optical module is inserted into the network-side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0207] In a possible implementation, the optical module includes a first multiplexer and a second multiplexer, and the first multiplexer and the second multiplexer are coupled;

[0208] The first multiplexer is configured to receive the first control signal transmitted by the receiving unit 901;

[0209] The first multiplexer is further configured to use the first control signal to control the second multiplexer to send the training signal to the sending unit 902. The training signal is a signal output by the first multiplexer when the second multiplexer receives a digital signal. The digital signal is transmitted to the second multiplexer by the receiving unit 901.

[0210] In an embodiment of the present application, another possible internal functional module structure of the above-mentioned optical module is provided. The optical module includes a first multiplexer and a second multiplexer, and the first multiplexer and the second multiplexer are coupled. After the first multiplexer receives the first control signal transmitted by the above-mentioned receiving unit, the first multiplexer uses the first control signal to control the second multiplexer to send a training signal to the above-mentioned sending unit. The training signal is the signal output by the first multiplexer when the second multiplexer receives a digital signal. The digital signal is transmitted by the above-mentioned receiving unit to the second multiplexer. Its external manifestation is that after the optical module receives the first control signal and the digital signal, it sends the training signal to the network side device. Among them, the first multiplexer can specifically control the second multiplexer by selecting the output signal source as the second multiplexer. The first multiplexer selects the output signal source as the second multiplexer, so as to achieve the goal of controlling the second multiplexer. When the first multiplexer selects the output signal source as the second multiplexer, it can be realized that when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the digital signal received by the second multiplexer is transmitted to the network side device through the second multiplexer, the first multiplexer, and the electrical signal link, for the network side device to perform equalization parameter training to obtain the target equalization parameters. The internal functional module structure of the optical module provided in the embodiment of the present application does not require a new sequence generator. Through two multiplexers, after the pluggable optical module is inserted into the network-side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0211] In a possible implementation, the optical module further includes an amplifier, and the amplifier is coupled to the first multiplexer;

[0212] The first multiplexer is further configured to receive the second control signal;

[0213] The first multiplexer is further configured to control the amplifier to send the uplink transmission signal to the sending unit 902 using the second control signal.

[0214] In an embodiment of the present application, another possible structure of the internal functional module of the above-mentioned optical module is provided. The optical module includes a sequence generator and a first multiplexer, or includes a first multiplexer and a second multiplexer, and further includes an amplifier, which is coupled to the first multiplexer. After the first multiplexer receives the second control signal, it uses the second control signal to control the amplifier to send an uplink transmission signal to the above-mentioned sending unit. Its externalization is that after the optical module receives the second control signal, it sends an uplink transmission signal to the network side device. Among them, the first multiplexer can specifically achieve control of the amplifier by selecting the output signal source as the amplifier. The first multiplexer selects the output signal source as the amplifier, which can achieve that after the network side device completes the equalization parameter training and there is an ONU signal input, the uplink transmission signal input through the amplifier is transmitted to the network side device through the first multiplexer and the electrical signal link, so that the network side device uses the target equalization parameters obtained by the equalization parameter training to equalize the uplink transmission signal. The internal functional module structure of the optical module provided in the embodiment of the present application, based on the aforementioned module structure, controls the sending of training signals and uplink transmission signals to the network side device at different stages by coupling an amplifier with a first multiplexer, so that the network side device can complete the equalization parameter training of the electrical signal link without relying on the ONU to emit light, and the equalization parameter training process does not interfere with the subsequent equalization process of the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0215] According to the embodiment of this application, Figure 9 The various units in the device shown can be separately or all combined into one or several other units to constitute, or some of the units can be further split into multiple smaller units in function to constitute, which can achieve the same operation without affecting the realization of the technical effects of the embodiments of the present application. The above-mentioned units are divided based on logical functions. In actual applications, the functions of one unit can also be implemented by multiple units, or the functions of multiple units can be implemented by one unit. In other embodiments of the present application, other units can also be included based on the network device. In actual applications, these functions can also be implemented with the assistance of other units, and can be implemented by the collaboration of multiple units.

[0216] It should be noted that the implementation of each unit can also refer to the above Figure 3 as well as Figure 5 The corresponding description of the method embodiment shown.

[0217] exist Figure 9In the described signal sending device 90, through the first control signal, the control signal sending device sends a training signal to the network side device after power-on and before transmitting the uplink control signal. The training signal is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. After the pluggable signal sending device is inserted into the network side device and powered on, the equalization parameter training of the electrical signal link can be completed without relying on the ONU light emission, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0218] See also Figure 10 , Figure 10 This is a schematic diagram of the structure of a signal equalization device provided in an embodiment of the present application. The signal equalization device 100 may include a sending unit 1001, a receiving unit 1002, and a training unit 1003. The description of each unit is as follows:

[0219] The sending unit 1001 is configured to output a first control signal, wherein the first control signal is configured to instruct the optical module to send a training signal to the signal equalizing device; the signal equalizing device is connected to the optical module via an electrical signal link;

[0220] The receiving unit 1002 is configured to receive the training signal;

[0221] The training unit 1003 is configured to perform equalization parameter training using the training signal to obtain target equalization parameters; the target equalization parameters are used to equalize the uplink transmission signal.

[0222] In an embodiment of the present application, after the signal equalization device sends a first control signal to the optical module, it receives a training signal sent by the optical module, and then uses the received training signal to train the equalization parameters to obtain target equalization parameters. The first control signal is used to instruct the optical module to send a training signal to the signal equalization device, and the target equalization parameters are used to equalize the subsequently received uplink transmission signal. The above-mentioned signal equalization device is connected to the optical module via an electrical signal link. The optical module is a pluggable optical module that can transmit electrical signals to the signal equalization device by inserting it into the signal equalization device and powering it on.

[0223] Compared with the current method of writing fixed equalization parameters into the device, the embodiment of the present application uses a first control signal to control the optical module to send a training signal to the signal equalization device after power-on and before transmitting the uplink control signal. The signal equalization device then uses the training signal to train the equalization parameters to obtain the target equalization parameters. This achieves the completion of the equalization parameter training of the electrical signal link after the pluggable optical module is inserted into the signal equalization device and powered on, without relying on the ONU to illuminate. The equalization parameter training process does not interfere with the subsequent process of equalizing the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the equalization parameter training efficiency and signal equalization efficiency.

[0224] In a possible implementation, the training signal is a signal generated by the optical module.

[0225] In an embodiment of the present application, a possible method is provided for the source of the training signal sent by the above-mentioned optical module. The training signal can be a signal generated by the internal functional module of the optical module itself according to the channel characteristics of the electrical signal link between the optical module and the signal equalizer. After receiving the first control signal sent by the signal equalizer, the optical module sends the above-generated training signal to the signal equalizer. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link between the signal equalizer and the optical module, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0226] In a possible implementation, the training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the signal equalization device.

[0227] In an embodiment of the present application, another possible way is provided for the source of the training signal sent by the above-mentioned optical module. The training signal can also be a signal output by the optical module when it receives a digital signal sent by the signal equalizer. The training signal can be understood as a signal that undergoes electrical excitation due to the channel characteristics of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the optical module sends the above-mentioned training signal to the signal equalizer. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link between the signal equalizer and the optical module, so that the target equalization parameters obtained by subsequent equalization parameter training using the training signal can be more accurate, thereby improving the signal equalization efficiency.

[0228] In a possible implementation manner, the sending unit 1001 is specifically configured to output the first control signal when it is detected that the optical module is inserted into the signal equalizing device and powered on.

[0229] In an embodiment of the present application, upon detecting that an optical module is inserted into the signal equalizer and powered on, the signal equalizer outputs a first control signal to control the optical module to send a training signal to the signal equalizer for equalization parameter training. By detecting the insertion and power-on status of the optical module and controlling the control signal sent thereto, the present embodiment can obtain a training signal for completing equalization parameter training even without an ONU signal input, thereby improving the efficiency of equalization parameter training and, in turn, signal equalization efficiency.

[0230] In a possible implementation, the device further includes:

[0231] The sending unit 1001 is further configured to output a second control signal, where the second control signal is configured to instruct the optical module to send the uplink transmission signal to the signal equalization device;

[0232] The receiving unit 1002 is further configured to receive the uplink transmission signal;

[0233] The equalization unit 1004 is configured to equalize the uplink transmission signal using the target equalization parameter.

[0234] In an embodiment of the present application, the signal equalizing device sends a second control signal to the optical module after completing the equalization parameter training, which is used to instruct the optical module to send an uplink transmission signal to the signal equalizing device. After receiving the uplink transmission signal, the signal equalizing device uses the target equalization parameters obtained by the above-mentioned equalization parameter training to perform signal equalization on the uplink transmission signal. In an embodiment of the present application, the second control signal is used to control the optical module to send an uplink transmission signal to the signal equalizing device after the signal equalization device completes the equalization parameter training, so that the signal equalization device can equalize the uplink transmission signal using the target equalization parameters. And because the control optical module sends the training signal and the uplink transmission signal to the signal equalizing device respectively at different stages, it can achieve the effect that the process of the signal equalizing device equalizing the uplink transmission signal and the above-mentioned equalization parameter training process do not interfere with each other, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system, thereby improving the equalization parameter training efficiency and the signal equalization efficiency.

[0235] According to the embodiment of this application, Figure 10The various units in the device shown can be separately or all combined into one or several other units to constitute, or some of the units can be further split into multiple smaller units in function to constitute, which can achieve the same operation without affecting the realization of the technical effects of the embodiments of the present application. The above-mentioned units are divided based on logical functions. In actual applications, the functions of one unit can also be implemented by multiple units, or the functions of multiple units can be implemented by one unit. In other embodiments of the present application, other units can also be included based on the network device. In actual applications, these functions can also be implemented with the assistance of other units, and can be implemented by the collaboration of multiple units.

[0236] It should be noted that the implementation of each unit can also refer to the above Figure 4 as well as Figure 5 The corresponding description of the method embodiment shown.

[0237] exist Figure 10 In the described signal equalizing device 100, a first control signal is used to control the optical module to send a training signal to the signal equalizing device after power-on and before transmitting an uplink control signal. The signal equalizing device then uses the training signal to perform equalization parameter training to obtain target equalization parameters. This allows the equalization parameter training of the electrical signal link to be completed after the pluggable optical module is inserted into the signal equalizing device and powered on, without relying on the ONU to illuminate. The equalization parameter training process does not interfere with the subsequent equalization process of the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the equalization parameter training efficiency and signal equalization efficiency.

[0238] See also Figure 11 , Figure 11 This is a schematic diagram of the structure of an electronic device 110 provided in an embodiment of the present application. The electronic device 110 may include a memory 1101 and a processor 1102. Optionally, the electronic device 110 may further include a communication interface 1103 and a bus 1104. The memory 1101, the processor 1102, and the communication interface 1103 are connected to each other via the bus 1104. The communication interface 1103 is used to exchange data with the signal transmitting device 90 or the signal equalizing device 100.

[0239] Memory 1101 is used to provide storage space for storing data such as an operating system and computer programs. Memory 1101 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or compact disc read-only memory (CD-ROM).

[0240] The processor 1102 is a module that performs arithmetic and logical operations, and can be one or a combination of multiple processing modules such as a central processing unit (CPU), a graphics processing unit (GPU), or a microprocessor unit (MPU).

[0241] The memory 1101 stores a computer program, and the processor 1102 calls the computer program stored in the memory 1101 to execute the above Figure 3 as well as Figure 5 Signaling method shown:

[0242] The optical module receives a first control signal, wherein the first control signal is used to instruct the optical module to send a training signal to a network-side device; the optical module is connected to the network-side device via an electrical signal link;

[0243] The optical module sends the training signal, where the training signal is a signal used by the network-side device to perform equalization parameter training.

[0244] In an embodiment of the present application, after receiving a first control signal, the optical module transmits a training signal to the network-side device. The first control signal is sent by the network-side device to the optical module to instruct the optical module to transmit the training signal to the network-side device. The training signal is a signal used by the network-side device to perform equalization parameter training. The optical module is connected to the network-side device via an electrical signal link. The optical module is a pluggable optical module that can transmit electrical signals to the network-side device by being inserted into the network-side device and powered on.

[0245] Compared with the current method of writing fixed equalization parameters into the device, the embodiment of the present application uses a first control signal to control the optical module to send a training signal to the network side device after power-on and before transmitting the uplink control signal. The training signal is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. After the pluggable optical module is inserted into the network side device and powered on, the equalization parameter training of the electrical signal link can be completed without relying on the optical network unit (ONU) to emit light, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed passive optical network (PON) system and improving the signal equalization efficiency.

[0246] In a possible implementation, the training signal is a signal generated by the optical module;

[0247] Alternatively, the training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the network-side device.

[0248] In an embodiment of the present application, two different methods are provided for the source of the training signal sent by the above-mentioned optical module. The training signal can be a signal generated by the internal functional module of the optical module itself according to the channel characteristics of the electrical signal link. After receiving the above-mentioned first control signal, the optical module sends the above-mentioned generated training signal to the network side device. Alternatively, the training signal can also be a signal output by the optical module when it receives a digital signal. The training signal can be understood as a signal that undergoes electrical excitation changes due to the channel characteristics of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the optical module sends the above-mentioned training signal to the network side device. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0249] In a possible implementation, the processor 1102 is further configured to execute:

[0250] receiving a second control signal, where the second control signal is used to instruct the optical module to send an uplink transmission signal to the network-side device;

[0251] The uplink transmission signal is sent, where the uplink transmission signal is a signal equalized using target equalization parameters, and the target equalization parameters are obtained by performing equalization parameter training using the training signal.

[0252] In an embodiment of the present application, after the optical module receives the second control signal, it sends an uplink transmission signal to the network side device. The second control signal is sent by the network side device to the optical module when the equalization parameter training is completed, and is used to instruct the optical module to send the uplink transmission signal to the network side device. The uplink transmission signal is a signal that the network side device equalizes using the target equalization parameter. The target equalization parameter is an equalization parameter obtained by the network side device using the training signal sent by the optical module to perform equalization parameter training. The embodiment of the present application controls the optical module to send an uplink transmission signal to the network side device after the network side device completes the equalization parameter training through the second control signal, which can realize the equalization of the uplink transmission signal by the network side device using the target equalization parameter, thereby improving the signal equalization efficiency.

[0253] In a possible implementation, the optical module includes a sequence generator and a first multiplexer, and the sequence generator is coupled to the first multiplexer;

[0254] The first multiplexer receives the first control signal;

[0255] The first multiplexer uses the first control signal to control the sequence generator to send the training signal to the network side device, where the training signal is generated by the sequence generator.

[0256] In an embodiment of the present application, a possible internal functional module structure of the above-mentioned optical module is provided. The optical module includes a sequence generator and a first multiplexer, and the sequence generator and the first multiplexer are coupled. After the first multiplexer receives the above-mentioned first control signal, it uses the first control signal to control the sequence generator to send a training signal generated by the sequence generator to the network side device. Its externalization is that after the optical module receives the first control signal, it sends a training signal to the network side device. Among them, the first multiplexer can specifically achieve control of the sequence generator by selecting the output signal source as the sequence generator. The first multiplexer selects the output signal source as the sequence generator, which can achieve the situation that when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the training signal generated by the sequence generator is transmitted to the network side device through the first multiplexer and the electrical signal link, and is used for the network side device to perform equalization parameter training to obtain the target equalization parameters. The internal functional module structure of the optical module provided in the embodiment of the present application, by adding a sequence generator, realizes that after the pluggable optical module is inserted into the network-side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0257] In a possible implementation, the optical module includes a first multiplexer and a second multiplexer, and the first multiplexer and the second multiplexer are coupled;

[0258] The first multiplexer receives the first control signal;

[0259] The first multiplexer uses the first control signal to control the second multiplexer to send the training signal to the network side device. The training signal is the signal output by the first multiplexer when the second multiplexer receives a digital signal. The digital signal is sent by the network side device to the second multiplexer.

[0260] In an embodiment of the present application, another possible internal functional module structure of the above-mentioned optical module is provided. The optical module includes a first multiplexer and a second multiplexer, and the first multiplexer and the second multiplexer are coupled. After receiving the above-mentioned first control signal, the first multiplexer uses the first control signal to control the second multiplexer to send a training signal to the network side device. The training signal is the signal output by the first multiplexer when the second multiplexer receives a digital signal. The digital signal is sent by the network side device to the second multiplexer. Its external manifestation is that after receiving the first control signal and the digital signal, the optical module sends the training signal to the network side device. Among them, the first multiplexer can specifically control the second multiplexer by selecting the output signal source as the second multiplexer. The first multiplexer selects the output signal source as the second multiplexer, so as to achieve the control of the second multiplexer. When the first multiplexer selects the output signal source as the second multiplexer, it can be achieved that when the optical module is just inserted into the network side device and powered on, and there is no ONU signal input, the digital signal received by the second multiplexer is transmitted to the network side device through the second multiplexer, the first multiplexer and the electrical signal link, for the network side device to perform equalization parameter training to obtain the target equalization parameters. The internal functional module structure of the optical module provided in the embodiment of the present application does not require a new sequence generator. Through two multiplexers, after the pluggable optical module is inserted into the network-side device and powered on, the equalization parameter training of the electrical signal link is completed without relying on the ONU light emission, thereby solving the dynamic equalization parameter training problem of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0261] In a possible implementation, the optical module further includes an amplifier, and the amplifier is coupled to the first multiplexer;

[0262] The first multiplexer receives the second control signal;

[0263] The first multiplexer uses the second control signal to control the amplifier to send the uplink transmission signal to the network side device.

[0264] In an embodiment of the present application, another possible structure of the internal functional module of the above-mentioned optical module is provided. The optical module includes a sequence generator and a first multiplexer, or includes a first multiplexer and a second multiplexer, and further includes an amplifier, which is coupled to the first multiplexer. After the first multiplexer receives the second control signal, it uses the second control signal to control the amplifier to send an uplink transmission signal to the network side device. Its externalization is that after the optical module receives the second control signal, it sends an uplink transmission signal to the network side device. Among them, the first multiplexer can specifically achieve control of the amplifier by selecting the output signal source as the amplifier. The first multiplexer selects the output signal source as the amplifier, which can achieve that after the network side device completes the equalization parameter training and there is an ONU signal input, the uplink transmission signal input through the amplifier is transmitted to the network side device through the first multiplexer and the electrical signal link, so that the network side device uses the target equalization parameters obtained by the equalization parameter training to equalize the uplink transmission signal. The internal functional module structure of the optical module provided in the embodiment of the present application, based on the aforementioned module structure, controls the sending of training signals and uplink transmission signals to the network side device at different stages by coupling an amplifier with a first multiplexer, so that the network side device can complete the equalization parameter training of the electrical signal link without relying on the ONU to emit light, and the equalization parameter training process does not interfere with the subsequent equalization process of the uplink transmission signal, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the signal equalization efficiency.

[0265] In the embodiment of the present application, the electronic device 110 is the above-mentioned optical module.

[0266] The specific content of the above-mentioned processor 1102 execution method and the corresponding beneficial effects can be found in the above-mentioned Figure 3 as well as Figure 5 , I will not go into details here.

[0267] The memory 1101 stores a computer program, and the processor 1102 calls the computer program stored in the memory 1101 to execute the above Figure 4 as well as Figure 5 Signal equalization method shown:

[0268] The network side device outputs a first control signal, wherein the first control signal is used to instruct the optical module to send a training signal to the network side device; the network side device is connected to the optical module via an electrical signal link;

[0269] The network side device receives the training signal;

[0270] The network-side device performs equalization parameter training using the training signal to obtain target equalization parameters, and the target equalization parameters are used to equalize the uplink transmission signal.

[0271] In an embodiment of the present application, after the network-side device sends a first control signal to the optical module, it receives a training signal sent by the optical module, and then uses the received training signal to train the equalization parameters to obtain target equalization parameters. The first control signal is used to instruct the optical module to send a training signal to the network-side device, and the target equalization parameters are used to equalize the subsequently received uplink transmission signal. The above-mentioned network-side device is connected to the optical module via an electrical signal link. The optical module is a pluggable optical module that can transmit electrical signals to the network-side device by being inserted into the network-side device and powered on.

[0272] Compared with the current method of writing fixed equalization parameters into the device, the embodiment of the present application uses a first control signal to control the optical module to send a training signal to the network side device after power-on and before transmitting the uplink control signal. The network side device then uses the training signal to perform equalization parameter training to obtain the target equalization parameters, thereby achieving the completion of the equalization parameter training of the electrical signal link after the pluggable optical module is inserted into the network side device and powered on, without relying on the ONU to illuminate, and the equalization parameter training process and the subsequent equalization process of the uplink transmission signal do not interfere with each other, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system and improving the equalization parameter training efficiency and signal equalization efficiency.

[0273] In a possible implementation, the training signal is a signal generated by the optical module.

[0274] In an embodiment of the present application, a possible method is provided for the source of the training signal sent by the above-mentioned optical module. The training signal can be a signal generated by the internal functional module of the optical module itself according to the channel characteristics of the electrical signal link between the network side device and the optical module. After receiving the first control signal sent by the network side device, the optical module sends the above-generated training signal to the network side device. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link between the network side device and the optical module, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0275] In a possible implementation, the training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the network-side device.

[0276] In an embodiment of the present application, another possible way is provided for the source of the training signal sent by the above-mentioned optical module. The training signal can also be a signal output by the optical module when it receives a digital signal sent by a network-side device. The training signal can be understood as a signal that undergoes electrical excitation due to the channel characteristics of the electrical signal link after the digital signal received by the optical module is transmitted through the electrical signal link. After receiving the digital signal and the first control signal, the optical module sends the above-mentioned training signal to the network-side device. The training signal obtained in the embodiment of the present application carries the channel characteristics of the electrical signal link between the network-side device and the optical module, which can make the target equalization parameters obtained by subsequent equalization parameter training using the training signal more accurate, thereby improving the signal equalization efficiency.

[0277] In a possible implementation, the processor 1102 is specifically configured to execute:

[0278] When it is detected that the optical module is inserted into the network-side device and powered on, the first control signal is output.

[0279] In an embodiment of the present application, upon detecting that an optical module is inserted into the network-side device and powered on, the network-side device outputs a first control signal to control the optical module to send a training signal to the network-side device for equalization parameter training. By detecting the insertion and power-on status of the optical module and controlling the control signal sent thereto, the present application embodiment can obtain a training signal for completing equalization parameter training even without an ONU signal input, thereby improving the efficiency of equalization parameter training and thereby improving signal equalization efficiency.

[0280] In a possible implementation, the processor 1102 is further configured to execute:

[0281] Outputting a second control signal, where the second control signal is used to instruct the optical module to send the uplink transmission signal to the network-side device;

[0282] receiving the uplink transmission signal;

[0283] The uplink transmission signal is equalized using the target equalization parameter.

[0284] In an embodiment of the present application, the network side device sends a second control signal to the optical module after completing the equalization parameter training, which is used to instruct the optical module to send an uplink transmission signal to the network side device. After receiving the uplink transmission signal, the network side device uses the target equalization parameters obtained by the above-mentioned equalization parameter training to perform signal equalization on the uplink transmission signal. In an embodiment of the present application, the optical module is controlled by the second control signal to send an uplink transmission signal to the network side device after the network side device completes the equalization parameter training, so that the network side device can use the target equalization parameters to equalize the uplink transmission signal. And because the control optical module sends the training signal and the uplink transmission signal to the network side device respectively at different stages, it can achieve the effect that the process of the network side device equalizing the uplink transmission signal and the above-mentioned equalization parameter training process do not interfere with each other, thereby solving the problem of dynamic equalization parameter training of the burst electrical signal link in the high-speed PON system, thereby improving the equalization parameter training efficiency and signal equalization efficiency.

[0285] In the embodiment of the present application, the electronic device 110 is the above-mentioned network side device.

[0286] The specific content of the above-mentioned processor 1102 execution method and the corresponding beneficial effects can be found in the above-mentioned Figure 4 as well as Figure 5 , I will not go into details here.

[0287] Accordingly, the processor 1102 calls the computer program stored in the memory 1101 and can also be used to execute the above Figure 9 The method steps performed by the receiving unit 901 and the sending unit 902 in the signal sending device 90 shown in FIG. Figure 9 , I will not go into details here.

[0288] Accordingly, the processor 1102 calls the computer program stored in the memory 1101 and can also be used to execute the above Figure 10 The method steps performed by the sending unit 1001, the receiving unit 1002, the training unit 1003 and the equalizing unit 1004 in the signal equalizing device 100 are described in detail in the above Figure 10 , I will not go into details here.

[0289] exist Figure 11 In the described electronic device 110, after the optical module is powered on, a control signal is used to control the optical module to send a training signal before transmitting the uplink control signal, and the training signal is used to train the equalization parameters to obtain the target equalization parameters, thereby realizing the use of the target equalization parameters for subsequent equalization of the uplink control signal, thereby improving the signal equalization efficiency.

[0290] The present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed on one or more processors, the above-mentioned Figure 3 、 Figure 4 as well as Figure 5 The method shown.

[0291] The present application also provides a computer program product, which, when executed on a processor, can implement the above Figure 3 、 Figure 4 as well as Figure 5 The method shown.

[0292] The embodiment of the present application also provides a chip, which includes a processor and a communication interface, wherein the processor is used to call and run instructions from the communication interface. When the processor executes the instructions, the above-mentioned Figure 3 、 Figure 4 as well as Figure 5 The method shown.

[0293] An embodiment of the present application further provides a system, which includes at least one of the above-mentioned signal sending device 90 or signal equalizing device 100 or electronic device 110 or chip.

[0294] In summary, after the optical module is powered on, the control signal is used to control the optical module to send a training signal before transmitting the uplink control signal, and the training signal is used to train the equalization parameters to obtain the target equalization parameters, so that the target equalization parameters can be used for subsequent equalization of the uplink control signal, thereby improving the signal equalization efficiency.

[0295] Those skilled in the art will appreciate that all or part of the process steps in the above-described method embodiments can be implemented by hardware associated with a computer program. The computer program can be stored in a computer-readable storage medium. When executed, the computer program can include the processes described in the above-described method embodiments. The aforementioned storage medium includes various media capable of storing computer program code, such as read-only memory (ROM) or random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A signal sending method, applied to an optical module, characterized in that: include: The optical module receives a first control signal, where the first control signal is used to instruct the optical module to send a training signal to a network-side device; The optical module is connected to the network side device via an electrical signal link; The optical module sends the training signal, where the training signal is a signal used by the network side device to perform equalization parameter training; The optical module includes a sequence generator and a first multiplexer, wherein the sequence generator is coupled to the first multiplexer; The optical module receives a first control signal, including: The first multiplexer receives the first control signal; The optical module sending the training signal includes: The first multiplexer uses the first control signal to control the sequence generator to send the training signal to the network side device, where the training signal is generated by the sequence generator.

2. The method according to claim 1, characterized in that The training signal is a signal generated by the optical module; Alternatively, the training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the network-side device.

3. The method according to claim 1 or 2, characterized in that The method further comprises: receiving a second control signal, where the second control signal is used to instruct the optical module to send an uplink transmission signal to the network-side device; The uplink transmission signal is sent, where the uplink transmission signal is a signal equalized using target equalization parameters, and the target equalization parameters are obtained by performing equalization parameter training using the training signal.

4. The method according to claim 1 or 2, characterized in that The optical module includes a first multiplexer and a second multiplexer, wherein the first multiplexer and the second multiplexer are coupled; The optical module receives a first control signal, including: The first multiplexer receives the first control signal; The optical module sending the training signal includes: The first multiplexer uses the first control signal to control the second multiplexer to send the training signal to the network side device. The training signal is the signal output by the first multiplexer when the second multiplexer receives a digital signal. The digital signal is sent by the network side device to the second multiplexer.

5. The method according to claim 3, characterized in that The optical module further includes an amplifier, wherein the amplifier is coupled to the first multiplexer; The receiving of the second control signal comprises: The first multiplexer receives the second control signal; The sending of the uplink transmission signal includes: The first multiplexer uses the second control signal to control the amplifier to send the uplink transmission signal to the network side device.

6. A signal equalization method, characterized in that: include: The network side device outputs a first control signal, where the first control signal is used to instruct the optical module to send a training signal to the network side device; The network side device is connected to the optical module via an electrical signal link; The network side device receives the training signal; The network side device performs equalization parameter training using the training signal to obtain target equalization parameters, where the target equalization parameters are used to equalize the uplink transmission signal; The optical module includes a sequence generator and a first multiplexer, wherein the sequence generator is coupled to the first multiplexer; The network side device outputs a first control signal, including: The network side device outputs the first control signal to the first multiplexer; The network-side device receiving the training signal includes: The network-side device receives the training signal from the sequence generator, where the training signal is generated by the sequence generator.

7. The method according to claim 6, characterized in that The training signal is a signal generated by the optical module.

8. The method according to claim 6, characterized in that The training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the network-side device.

9. The method according to any one of claims 6 to 8, characterized in that The outputting of the first control signal comprises: When it is detected that the optical module is inserted into the network-side device and powered on, the first control signal is output.

10. The method according to any one of claims 6 to 8, characterized in that The method further comprises: Outputting a second control signal, where the second control signal is used to instruct the optical module to send the uplink transmission signal to the network-side device; receiving the uplink transmission signal; The uplink transmission signal is equalized using the target equalization parameter.

11. A signal sending device, applied to an optical module, characterized in that: include: a receiving unit, configured to receive a first control signal, wherein the first control signal is used to instruct the signal sending device to send a training signal to a network-side device; The signal sending device is connected to the network side device via an electrical signal link; a sending unit, configured to send the training signal, where the training signal is a signal used by the network-side device to perform equalization parameter training; The optical module includes a sequence generator and a first multiplexer, wherein the sequence generator is coupled to the first multiplexer; The first multiplexer is configured to receive the first control signal transmitted by the receiving unit; The first multiplexer is further configured to use the first control signal to control the sequence generator to send the training signal to the sending unit, where the training signal is generated by the sequence generator.

12. The device according to claim 11, characterized in that The training signal is a signal generated by the signal sending device; Alternatively, the training signal is a signal output by the signal sending device when receiving a digital signal, and the digital signal is sent to the signal sending device by the network side device.

13. The device according to claim 11 or 12, characterized in that The receiving unit is further configured to receive a second control signal, where the second control signal is configured to instruct the signal sending device to send an uplink transmission signal to the network side device; The sending unit is further configured to send the uplink transmission signal, where the uplink transmission signal is a signal equalized using target equalization parameters, and the target equalization parameters are obtained by performing equalization parameter training using the training signal.

14. The device according to claim 11 or 12, characterized in that The optical module includes a first multiplexer and a second multiplexer, wherein the first multiplexer and the second multiplexer are coupled; The first multiplexer is configured to receive the first control signal transmitted by the receiving unit; The first multiplexer is further configured to use the first control signal to control the second multiplexer to send the training signal to the sending unit, where the training signal is a signal output by the first multiplexer when the second multiplexer receives a digital signal, and the digital signal is transmitted from the receiving unit to the second multiplexer.

15. The device according to claim 13, characterized in that The optical module further includes an amplifier, wherein the amplifier is coupled to the first multiplexer; The first multiplexer is further configured to receive the second control signal; The first multiplexer is further configured to control the amplifier to send the uplink transmission signal to the sending unit using the second control signal.

16. A signal equalization device, characterized in that: include: a sending unit, configured to output a first control signal, wherein the first control signal is used to instruct the optical module to send a training signal to the signal equalization device; The signal equalization device is connected to the optical module via an electrical signal link; A receiving unit, configured to receive the training signal; A training unit, configured to perform equalization parameter training using the training signal to obtain target equalization parameters; The target equalization parameter is used to equalize the uplink transmission signal; The optical module includes a sequence generator and a first multiplexer, wherein the sequence generator is coupled to the first multiplexer; The outputting of the first control signal comprises: outputting the first control signal to the first multiplexer; The receiving the training signal comprises: The training signal is received from the sequence generator, wherein the training signal is generated by the sequence generator.

17. The device according to claim 16, characterized in that The training signal is a signal generated by the optical module.

18. The device according to claim 16, characterized in that The training signal is a signal output by the optical module when receiving a digital signal, and the digital signal is sent to the optical module by the signal equalization device.

19. The device according to any one of claims 16 to 18, characterized in that The sending unit is specifically configured to output the first control signal when it is detected that the optical module is inserted into the signal equalizing device and powered on.

20. The device according to any one of claims 16 to 18, characterized in that The device further comprises: The sending unit is further configured to output a second control signal, wherein the second control signal is configured to instruct the optical module to send the uplink transmission signal to the signal equalization device; The receiving unit is further configured to receive the uplink transmission signal; An equalization unit is configured to equalize the uplink transmission signal using the target equalization parameter.

21. A signal sending device, characterized in that: include: processor and communication interface; The communication interface is used to receive or send signals; The processor is configured to execute computer-executable instructions so as to enable the signal sending device to perform the method according to any one of claims 1 to 5.

22. A signal equalization device, characterized in that: include: processor and communication interface; The communication interface is used to receive or send signals; The processor is configured to execute computer-executable instructions so as to enable the signal equalizing device to perform the method according to any one of claims 6 to 10.

23. A computer-readable storage medium, characterized in that include: The computer-readable storage medium is used to store instructions or computer programs; When the instructions or the computer program are executed, the method according to any one of claims 1 to 5 or 6 to 10 is implemented.

24. A computer program product, characterized in that include: instructions or computer programs; When the instructions or the computer program are executed, the method according to any one of claims 1 to 5 or 6 to 10 is implemented.

25. A signal processing system comprising the signal transmitting device according to any one of claims 11 to 15 or the signal transmitting device according to claim 21, or the signal equalizing device according to any one of claims 16 to 20 or the signal equalizing device according to claim 22.

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