Uplink burst signal convergence method, apparatus and computer program product

Abstract

Provided in an embodiment of the present invention are an uplink burst signal convergence method, device and computer program product, the uplink burst signal from an ONU is received by an OLT receiver, the uplink burst signal carrying a packet signal, the packet signal comprising a packet number corresponding to the ONU, and different packet numbers corresponding to different receiver parameters, the grouped signals are received and identified by an OLT receiver; and the OLT receiver calls the corresponding receiver parameters based on the packet signals to converge the uplink burst signals. According to the invention, the problems of long burst reception recovery time and low uplink transmission efficiency of the OLT in related technologies are solved, and the effects of reducing the burst reception recovery time of the OLT and improving the uplink transmission efficiency are achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communications, and more specifically, to a method, apparatus, and computer program product for converging uplink burst signals. Background Technology

[0002] Passive Optical Network (PON) technology is a point-to-multipoint (P2MP) broadband access technology based on a passive optical distribution network (ODN). Uplink and downlink transmission wavelengths are independent, and data is time-division multiplexed (TDM). The network uses a P2MP topology, where one PON port can connect to multiple optical network units (ONUs). In a PON system, the signal power and transmission distance of different ONUs arriving at the optical receiver at the optical line terminal (OLT) vary, and the transmitter device parameters of each ONU are also inconsistent. The OLT needs to perform equalization, clocking, and other parameter convergence on the burst signals arriving at each ONU in order to receive the uplink data transmitted by each ONU normally. This results in a long burst reception recovery time for the OLT and low uplink transmission efficiency. Summary of the Invention

[0003] This invention provides a method, apparatus, and computer program product for converging uplink burst signals, in order to at least solve the problems of long OLT burst reception recovery time and low uplink transmission efficiency in related technologies.

[0004] According to an embodiment of the present invention, a method for converging uplink burst signals is provided, comprising: an optical line terminal (OLT) receiver receiving uplink burst signals from an optical network unit (ONU), wherein the uplink burst signals carry packet signals, the packet signals include packet numbers corresponding to the ONU, and different packet numbers correspond to different receiver parameters; the packet signals are received and identified by the OLT receiver; the OLT receiver calls the corresponding receiver parameters based on the packet signals to converge the uplink burst signals.

[0005] According to another embodiment of the present invention, an uplink burst signal convergence device is provided, comprising: an optical line terminal (OLT) receiver, the OLT receiver including a parameter register for storing receiver parameters, each set of receiver parameters corresponding to a packet number, and each packet number corresponding to one or more optical network units (ONUs); the OLT receiver is used to receive uplink burst signals from the ONUs, wherein the uplink burst signals carry packet signals, the packet signals including the packet number corresponding to the ONU, and the packet signals are received and identified by the OLT receiver.

[0006] According to yet another embodiment of the present invention, a computer program product is also provided, comprising a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0007] This invention provides a method for converging uplink burst signals. An OLT receiver receives uplink burst signals from an ONU, where each burst signal carries a packet signal. The packet signal includes a packet number corresponding to the ONU, and different packet numbers correspond to different receiver parameters. The OLT receiver receives and identifies the packet signals. Based on the packet signals, the OLT receiver calls the corresponding receiver parameters to converge the uplink burst signals. This method solves the problems of long OLT burst reception recovery time and low uplink transmission efficiency in related technologies, achieving the effect of reducing OLT burst reception recovery time and improving uplink transmission efficiency. Attached Figure Description

[0008] Figure 1 This is a hardware structure block diagram of a computer terminal for the convergence method of uplink burst signals according to an embodiment of the present invention.

[0009] Figure 2 This is a flowchart illustrating the convergence of uplink burst signals according to an embodiment of the present invention;

[0010] Figure 3 This is a flowchart illustrating the convergence method for uplink burst signals according to an embodiment of the present invention.

[0011] Figure 4 This is a schematic diagram illustrating the principle of receiver parameter group update for the ONU in this embodiment of the invention. Figure 1 ;

[0012] Figure 5 This is a schematic diagram illustrating the principle of receiver parameter group update for the ONU in this embodiment of the invention. Figure 2 ;

[0013] Figure 6 This is a schematic diagram of the ONU uplink transmission architecture according to an embodiment of the present invention. Figure 1 ;

[0014] Figure 7 This is a schematic diagram of the ONU uplink transmission architecture according to an embodiment of the present invention. Figure 2 ;

[0015] Figure 8 This is a schematic diagram of the grouping principle of the grouped signal in an embodiment of the present invention. Figure 1 ;

[0016] Figure 9 This is a schematic diagram of the grouping principle of the grouped signal in an embodiment of the present invention. Figure 2 ;

[0017] Figure 10 This is a schematic diagram of the grouping principle of the grouped signal in an embodiment of the present invention. Figure 3 . Detailed Implementation

[0018] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0020] The methods and embodiments provided in this application can be executed on a mobile terminal, a computer terminal, or a similar computing device. Taking running on a computer terminal as an example, Figure 1 This is a hardware structure block diagram of a computer terminal for the uplink burst signal convergence method according to an embodiment of the present invention. For example... Figure 1 As shown, a computer terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The computer terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the computer terminal described above. For example, the computer terminal may also include components that are more complex than those described above. Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0021] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the uplink burst signal convergence method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to a computer terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0022] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider for the computer terminal. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 106 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0023] This invention provides a method for converging uplink burst signals. Figure 2 This is a flowchart illustrating the convergence of uplink burst signals according to an embodiment of the present invention, as follows: Figure 2 As shown, the process includes the following steps:

[0024] In step S202, the OLT receiver receives the uplink burst signal from the ONU. The uplink burst signal carries a packet signal, which includes the packet number corresponding to the ONU. Different packet numbers correspond to different receiver parameters. The packet signal is received and identified by the OLT receiver.

[0025] In one exemplary embodiment, before the OLT receiver receives the uplink burst signal from the ONU, the method further includes: the OLT receiver establishing a correspondence between each set of receiver parameters and the ONU, determining the packet information, and sending the packet information to the ONU.

[0026] In this embodiment of the invention, when the OLT marks the ONU with packets, it transmits packet information downlink to the ONU. The OLT receiver receives and identifies the packet signal, and the OLT receiver can obtain the packet information by identifying the packet signal.

[0027] In step S204, the OLT receiver calls the corresponding receiver parameters based on the packet signal to converge the uplink burst signal.

[0028] In one exemplary embodiment, the OLT receiver invokes the corresponding receiver parameters based on the packet signal, including: the OLT receiver converting the packet signal into a packet indication signal; and the OLT receiver determining the receiver parameters of the packet corresponding to the uplink burst signal based on the packet indication signal.

[0029] In one exemplary embodiment, the method further includes: the OLT receiver updating the grouping of receiver parameters based on the signal performance of the new ONU.

[0030] In an exemplary embodiment, the OLT receiver updates the receiver parameter groupings based on the signal performance of the new ONU, including: each group of receiver parameters corresponds to the signal performance of one ONU; if the signal performance of the new ONU is less than the minimum value of the signal performance corresponding to the group of receiver parameters or greater than the maximum value of the signal performance corresponding to the group of receiver parameters, the receiver parameters corresponding to the new ONU are used to replace the receiver parameters of the group corresponding to the minimum or maximum value of the signal performance.

[0031] In an exemplary embodiment, the OLT receiver updates the grouping of receiver parameters based on the signal performance of the new ONU, including: determining N equal division points of the signal performance based on the minimum and maximum values ​​of the original signal performance, where N is the number of receiver parameter groups; if a first difference is less than a second difference, replacing the original receiver parameters corresponding to the signal performance with the receiver parameters corresponding to the new ONU; otherwise, using the original receiver parameters as the receiver parameters corresponding to the new ONU; wherein the first difference is the difference between the signal performance of the new ONU and the signal performance corresponding to the nearest equal division point, and the second difference is the difference between the signal performance corresponding to the original group and the signal performance corresponding to the nearest equal division point.

[0032] In an exemplary embodiment, the OLT receiver invokes the corresponding receiver parameters based on the packet signal, including: the OLT receiver confirms the ONU's packet number and the corresponding receiver parameters based on the characteristic parameters carried by the packet signal; wherein, the characteristic parameters include at least one of the following: the duration of the uplink burst signal; the amplitude of the uplink burst signal; the peak-to-peak value of the uplink burst signal; and the extinction ratio of the uplink burst signal.

[0033] This invention provides a method for converging uplink burst signals. An OLT receiver receives uplink burst signals from an ONU, where each burst signal carries a packet signal. The packet signal includes a packet number corresponding to the ONU, and different packet numbers correspond to different receiver parameters. The OLT receiver receives and identifies the packet signals. Based on the packet signals, the OLT receiver calls the corresponding receiver parameters to converge the uplink burst signals. This method solves the problems of long OLT burst reception recovery time and low uplink transmission efficiency in related technologies, achieving the effect of reducing OLT burst reception recovery time and improving uplink transmission efficiency.

[0034] This embodiment also provides an uplink burst signal convergence device, which is used to implement the above embodiments and preferred embodiments, and will not be repeated as already described. As used below, the term "module" can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0035] The uplink burst signal convergence device provided in this embodiment of the invention includes: an optical line terminal (OLT) receiver, the OLT receiver including a parameter register for storing receiver parameters, each set of receiver parameters corresponding to a packet number, and each packet number corresponding to one or more optical network units (ONUs); the OLT receiver is used to receive uplink burst signals from the ONUs, wherein the uplink burst signals carry packet signals, the packet signals including the packet number corresponding to the ONU, and the packet signals are received and identified by the OLT receiver.

[0036] In one exemplary embodiment, the OLT receiver is also used to update the grouping of receiver parameters based on the signal performance of the new ONU.

[0037] In this embodiment of the invention, the above-mentioned uplink burst signal convergence device may also include different modules, and the naming and functional division of the modules may be selected in different ways according to the actual situation, without specific restrictions.

[0038] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0039] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0040] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, wherein the computer program is configured to perform the steps in any of the above method embodiments when executed.

[0041] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0042] Embodiments of the present invention also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0043] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0044] This invention also provides a computer program product, including a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0045] In one exemplary embodiment, the computer program product described above includes a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the methods described in various embodiments of this application.

[0046] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0047] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0048] To enable those skilled in the art to better understand the technical solutions of the present invention, the following description is provided in conjunction with different embodiments.

[0049] Example 1

[0050] In communication systems, "convergence" typically refers to the process by which system parameters reach a stable state within a certain timeframe. In PON systems, convergence usually refers to the process of signal parameter adaptation and synchronization between the OLT and ONUs. When an ONU sends a signal to the OLT, the signal power reaching the OLT can vary significantly due to various factors such as transmission distance, fiber loss, and differences in ONU transmitter parameters. Furthermore, the clock frequency, encoding method, and modulation format of the ONUs may also differ. To ensure that the OLT can correctly receive and decode signals from different ONUs, the OLT needs to perform a series of adjustments and processing; this process is called convergence.

[0051] Figure 3 This is a flowchart illustrating the convergence method for uplink burst signals according to an embodiment of the present invention, as shown below. Figure 3As shown, the OLT receives the uplink burst signal from a newly registered and activated ONU. The OLT demodulates the uplink burst signal from the ONU. After the receiver parameter performance converges, it determines whether to update the register according to the rules. If an update is needed, the receiver parameter grouping in the register is updated; otherwise, the receiver parameter grouping in the register is maintained. The above rules can be set according to actual scenarios or requirements. The content of the rules is described in the subsequent description of this embodiment and will not be elaborated here. Afterwards, the OLT establishes the correspondence between the receiver parameters and this ONU, determines the grouping information, and transmits the grouping information downlink to the ONU, completing the grouping marking of the ONU. After receiving the grouping information, the ONU will carry the designed grouping signal during the subsequent transmission of uplink burst signals to the OLT for uplink service transmission. The grouping signal is the signal format designed corresponding to the grouping information. After the ONU sends the uplink burst signal carrying the grouping signal to the OLT receiver, the OLT receiver identifies the grouping signal and determines the group number corresponding to the ONU, selecting the corresponding receiver parameters for configuration. After the OLT completes the configuration of the ONU's receiver parameters, it performs convergence demodulation of the uplink burst signal.

[0052] In this embodiment of the invention, when an ONU registers online, it sends a long preamble during the registration window. Upon receiving the ONU registration packet, the OLT receiver uses the ONU preamble to acquire adaptive burst receiver parameters, including transimpedance amplifier (TIA) gain, clock frequency, phase, equalization coefficient, and optical amplifier gain. Once the receiver parameters converge, the receiver parameters and the signal performance of the corresponding demodulated ONU are stored in the receiver's register. The signal performance can be any one or more of the following indicators: received optical power, received signal strength indication (RRSI) value, received signal quality, received signal strength, signal-to-noise ratio (SNR), bit error rate (BER), etc. The OLT receiver assigns a corresponding number to this set of receiver parameters (i.e., the receiver parameters and the ONU's signal performance) to distinguish and locate different groups. In actual implementation, each set of receiver parameters corresponds to a different group number, but each group number can correspond to one or more ONUs.

[0053] In this embodiment of the invention, after the OLT receiver parameters converge, it can select to extract the optimal receiver parameters of the set. The optimal receiver parameters are those that ensure the ONU's uplink burst signal performance meets the standards and is stable while using fewer computational resources. In actual implementation, since the specific link status of the ONU is unknown at the beginning of training, the equalization resources need to fully utilize hardware resources; for example, all taps are used for equalization. After convergence, for example, it can be specified to wait for time t, or until the performance stabilizes and no longer changes, to observe the convergence of the number of taps. If the number of taps gradually approaches 0 after the Mth tap, it can be determined that the number of taps in this set of parameters can be reduced to M, thereby saving power consumption and computational resources. Here, t and M are both integers greater than 0.

[0054] In actual implementation, since the parameter register of the OLT receiver limits the number of parameter groups to an unlimited number, when the number of registered and activated ONUs exceeds the range stored in the parameter register, the parameter register will compare the corresponding signal performance and update it according to the signal performance.

[0055] In this embodiment of the invention, each set of receiver parameters corresponds to the signal performance of an ONU. If the signal performance of the new ONU is less than the minimum signal performance of the group of receiver parameters or greater than the maximum signal performance of the group of receiver parameters, the receiver parameters of the group corresponding to the minimum or maximum signal performance are replaced with the receiver parameters of the new ONU.

[0056] Figure 4 This is a schematic diagram illustrating the principle of receiver parameter group update for the ONU in this embodiment of the invention. Figure 1 ,like Figure 4 As shown, if the signal performance of this ONU (the new ONU) exceeds the performance boundary of the currently stored parameter set, that is, worse than the worst performing set (less than the minimum signal performance) or better than the best performing set (greater than the maximum signal performance), then the receiver parameter set and signal performance parameters corresponding to this ONU will replace the set with the closest performance in the parameter register.

[0057] In this embodiment of the invention, N equal division points of the signal performance are determined based on the minimum and maximum values ​​of the original signal performance, where N is the number of receiver parameter groups; if the first difference is less than the second difference, the receiver parameters corresponding to the original signal performance are replaced with the receiver parameters corresponding to the new ONU, and the parameter group corresponding to the new ONU is marked; otherwise, the original receiver parameters are used as the receiver parameters corresponding to the new ONU; wherein, the first difference is the difference between the signal performance of the new ONU and the signal performance corresponding to the nearest equal division point, and the second difference is the difference between the signal performance corresponding to the original group and the signal performance corresponding to the nearest equal division point.

[0058] Figure 5 This is a schematic diagram illustrating the principle of receiver parameter group update for the ONU in this embodiment of the invention. Figure 2 ,like Figure 5 As shown, if the ONU's signal performance falls within the performance boundary of the currently stored parameter groups, the system finds the closest stored group's signal performance (excluding the worst and best performing groups). It then determines which group's signal performance is closer to the performance value of the N equal division points of the stored performance range. If the ONU is closer to the division point value (i.e., the first difference is less than the second difference), the ONU's receiver parameter group and signal performance parameters replace that group in the parameter register, and the ONU's group number is marked. Otherwise, the stored value in the parameter register remains unchanged; the ONU is mapped to that group in the parameter register, and the corresponding group number is marked.

[0059] In this embodiment of the invention, after the OLT determines the packet number of the ONU, it feeds back the packet number through the I2C low-speed interface. The Media Access Control (MAC) layer reads the packet number and binds the ONU to the packet number. It then notifies the ONU of this relationship through downlink transmission. The ONU then knows which group of receiver parameters it has been assigned to.

[0060] Figure 6 This is a schematic diagram of the ONU uplink transmission architecture according to an embodiment of the present invention. Figure 1 , Figure 7 This is a schematic diagram of the ONU uplink transmission architecture according to an embodiment of the present invention. Figure 2 ,like Figure 6 and Figure 7As shown, while the OLT receiver receives the uplink high-speed data signal (i.e., uplink burst signal) from the ONU, it also needs to identify the carried packet signals. These packet signals can be identified by a limited / linear amplifier (LA) or a transimpedance amplifier (TIA). The Burst mode Clock and Data Recovery (BCDR) and equalization modules read the corresponding receiver parameters from the parameter register based on the packet signals. These parameters include, but are not limited to, the number of equalization taps, the initial tap values, and the clock frequency. This information is used to determine the initial values ​​for the ONU uplink high-speed data signal recovery convergence. The OLT receiver can then perform algorithm optimization iterations based on these parameters to achieve convergence, significantly reducing the convergence speed. In one embodiment, when signal performance is similar, the OLT directly reads the corresponding parameter values ​​from the register for signal recovery, without requiring further convergence calculations.

[0061] In this embodiment of the invention, the OLT receiver can convert the packet signal into a packet indication signal through a signal amplifier, wherein the signal amplifier includes, but is not limited to, the LA and TIA mentioned above.

[0062] In this embodiment of the invention, the LA or TIA of the OLT receiver needs to identify the packet signal, and confirm the ONU's packet number and the corresponding receiver parameters based on the characteristic parameters carried by the packet signal; wherein, the characteristic parameters include at least one of the following: the duration of the uplink burst signal; the amplitude of the uplink burst signal; the peak-to-peak value of the uplink burst signal; the extinction ratio of the uplink burst signal.

[0063] Figure 8 This is a schematic diagram of the grouping principle of the grouped signal in an embodiment of the present invention. Figure 1 ,like Figure 8 As shown, different groups are distinguished based on the duration of the packet signals carried by the uplink burst signal. When the OLT receives the packet signal, it samples at fixed time intervals. In one embodiment, when the OLT receives the packet signal, it samples at fixed time intervals shorter than the minimum duration of the packet signal. This allows it to determine the duration of the packet signal in the burst signal based on the number of sampled high-level signals, thereby performing group identification.

[0064] Figure 9 This is a schematic diagram of the grouping principle of the grouped signal in an embodiment of the present invention. Figure 2 ,like Figure 9As shown, different groups are distinguished based on the differences in amplitude, peak-to-peak value, and extinction ratio of the grouped signals. The ONU distinguishes groups based on the differences in amplitude, peak-to-peak value, and extinction ratio of the carried grouped signals. When the OLT receives the signal, it samples at fixed time intervals less than T1 according to the known designed pulse duration T1 of the signal. This allows it to collect high and low level values, thereby calculating the amplitude, peak-to-peak value, and extinction ratio of the signal and performing group identification.

[0065] Figure 10 This is a schematic diagram of the grouping principle of the grouped signal in an embodiment of the present invention. Figure 3 ,like Figure 10 As shown, different groups are distinguished based on the duration and amplitude / peak-to-peak value / extinction ratio of the grouped signals. During implementation, sampling is performed at fixed time intervals less than T1. The duration of the burst signal grouped by the number of high-level samples is determined, and the differences in amplitude / peak-to-peak value / extinction ratio are also calculated. Grouping is then performed by combining these two characteristics.

[0066] In this embodiment of the invention, when the LA or TIA identifies the corresponding group, it needs to convert the group signal into a group indication signal and transmit it to the BCDR and equalization module. The group indication signal can be transmitted to the BCDR and equalization module through the Signal Detection (SD) pin. In one embodiment, the group indication signal can be designed as a pulse with a specific width and amplitude, or a level signal with a specific amplitude. The group indication signal is a low-speed signal, and the design principle should be that the BCDR and equalization module can identify and distinguish N groups, that is, the numbers of N different parameters stored in the register, so as to indicate different parameter groups in the register and configure the burst of ONU uplink high-speed data signals.

[0067] The uplink burst signal convergence method provided in this embodiment of the invention utilizes a parameter register inside the burst receiver to store receiver parameters such as equalization and clock frequency when receiving uplink burst signals from different ONUs. When an ONU transmits an uplink burst signal, it carries a packet signal indicating which receiver parameter group the ONU belongs to. When the ONU's uplink burst signal arrives at the burst receiver, the burst receiver retrieves the receiver parameters of the corresponding group and configures them. In this configured parameter configuration, the number of equalization taps can be reduced, the equalization coefficients can converge quickly, or even no convergence process is needed; the configured equalization coefficient values ​​can be used directly for equalization, thereby reducing receiver latency and power consumption.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A convergence method for uplink burst signals, characterized in that, include: The optical line terminal (OLT) receiver receives uplink burst signals from optical network units (ONUs). The uplink burst signals carry packet signals, which include packet numbers corresponding to the ONUs. Different packet numbers correspond to different receiver parameters. The packet signals are received and identified by the OLT receiver. The OLT receiver calls the corresponding receiver parameters based on the packet signal to converge the uplink burst signal.

2. The method according to claim 1, characterized in that, The OLT receiver calls the corresponding receiver parameters based on the packet signal, including: The OLT receiver converts the packet signal into a packet indication signal; The OLT receiver determines the receiver parameters of the packet corresponding to the uplink burst signal based on the packet indication signal.

3. The method according to claim 1, characterized in that, Before the OLT receiver receives the uplink burst signal from the ONU, the method further includes: The OLT receiver establishes a correspondence between each set of receiver parameters and the ONU, determines the group information, and sends the group information to the ONU.

4. The method according to claim 1, characterized in that, Also includes: The OLT receiver updates the receiver parameter grouping based on the new ONU signal performance.

5. The method according to claim 4, characterized in that, The OLT receiver updates the receiver parameter groups based on the new ONU signal performance, including: Each set of receiver parameters corresponds to the signal performance of one ONU. If the signal performance of the new ONU is less than the minimum signal performance corresponding to the group of receiver parameters or greater than the maximum signal performance corresponding to the group of receiver parameters, the receiver parameters corresponding to the new ONU are used to replace the receiver parameters of the group corresponding to the minimum or maximum signal performance.

6. The method according to claim 4, characterized in that, The OLT receiver updates the receiver parameter groups based on the new ONU signal performance, including: Based on the original minimum and maximum values ​​of the signal performance, N equal division points of the signal performance are determined, where N is the number of groups of the receiver parameters; If the first difference is less than the second difference, the receiver parameters corresponding to the original signal performance are replaced with the receiver parameters corresponding to the new ONU; otherwise, the original receiver parameters are used as the receiver parameters corresponding to the new ONU. The first difference is the difference between the signal performance of the new ONU and the signal performance corresponding to the nearest dividing point, and the second difference is the difference between the signal performance corresponding to the original group and the signal performance corresponding to the nearest dividing point.

7. The method according to claim 1, characterized in that, The OLT receiver calls the corresponding receiver parameters based on the packet signal, including: The OLT receiver confirms the ONU's packet number and the corresponding receiver parameters based on the characteristic parameters carried by the packet signal; The characteristic parameters include at least one of the following: the duration of the uplink burst signal; the amplitude of the uplink burst signal; the peak-to-peak value of the uplink burst signal; and the extinction ratio of the uplink burst signal.

8. A convergence device for uplink burst signals, characterized in that, include: An optical line terminal (OLT) receiver, the OLT receiver including a parameter register. The parameter register is used to store receiver parameters. Each group of receiver parameters corresponds to a group number, and each group number corresponds to one or more optical network units (ONUs). The OLT receiver is used to receive uplink burst signals from the ONU, wherein the uplink burst signals carry packet signals, the packet signals include the packet number corresponding to the ONU, and the packet signals are received and identified by the OLT receiver.

9. The apparatus according to claim 8, characterized in that, in, The OLT receiver is also used to update the receiver parameters based on the new ONU signal performance.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the method described in any one of claims 1 to 7.

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