Registration method and device, method for writing information, optical line terminal, optical network unit

Abstract

An embodiment of the present disclosure provides a method for registering an optical network unit, which is used for an optical line terminal and includes: sending registration configuration information according to the registration information of the optical network unit to be registered obtained in advance to complete the registration of the optical network unit to be registered; wherein the registration information of the optical network unit to be registered is obtained before the start of this registration. An embodiment of the present disclosure also provides a method for writing registration information, an optical line terminal, an optical network unit, a preposed optical network unit, and a registration device.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to the technical field of passive optical networks, and particularly to a method for registering an optical network unit, a method for writing registration information, an optical line terminal, an optical network unit, a pre - optical network unit, and a registration device. Background Art

[0002] A passive optical network (PON) is a point - to - multi - point network topology, which generally consists of an optical line terminal (OLT) located at a central office, multiple optical network units (ONUs) located at user ends, and an optical distribution network (ODN) located therebetween.

[0003] With the development of communication technologies, due to its excellent characteristics such as low cost, large bandwidth, long distance, and passivation, passive optical network technology has gradually become one of the important technologies for services with strict requirements for transmission delay, such as mobile fronthaul, mobile backhaul, high - definition video services, and augmented reality (AR) services.

[0004] When a new optical network unit needs to access the passive optical network, or when an optical network unit goes offline and then comes back online, the optical network unit needs to be registered first, but this registration process may cause additional delay. Summary of the Invention

[0005] Embodiments of the present disclosure provide a method for registering an optical network unit, a method for writing registration information, an optical line terminal, an optical network unit, a pre - optical network unit, and a registration device.

[0006] In a first aspect, embodiments of the present disclosure provide a method for registering an optical network unit, which is used for an optical line terminal, and the method includes:

[0007] According to the registration information of the optical network unit to be registered obtained in advance, send down registration configuration information to complete the registration of the optical network unit to be registered; wherein, the registration information of the optical network unit to be registered is obtained before the start of this registration.

[0008] In some embodiments, the process of obtaining the registration information of the optical network unit to be registered in advance includes:

[0009] During the registration or working process that the optical network unit to be registered has completed before this registration, obtain the registration information of the optical network unit to be registered.

[0010] In some embodiments, the process of obtaining the registration information of the optical network unit to be registered in advance includes:

[0011] Modify the registration information of the pre - optical network unit to the registration information of the optical network unit to be registered.

[0012] In some embodiments, before registering the information of the pre - optical network unit as the registration information of the to - be - registered optical network unit, it further includes:

[0013] Complete the registration of the pre - optical network unit, and obtain the registration information of the pre - optical network unit during the registration process.

[0014] In some embodiments, completing the registration of the pre - optical network unit includes receiving at least one response information sent by the pre - optical network unit; wherein, the response information is received through a registration channel different from the service channel.

[0015] In some embodiments, the registration information includes at least one of the following:

[0016] The identity identifier of the optical network unit; the identity identifier of the optical network unit includes the serial number of the optical network unit, or the MAC address of the optical network unit;

[0017] The equalization delay of the optical network unit.

[0018] In some embodiments, the registration configuration information includes at least one of the following:

[0019] The logical identifier of the to - be - registered optical network unit; the logical identifier includes the ONU - ID of the to - be - registered optical network unit, or the logical link identifier of the to - be - registered optical network unit;

[0020] The equalization delay of the optical network unit;

[0021] The authorized bandwidth allocated to the to - be - registered optical network unit.

[0022] In some embodiments, there are preset protection intervals before and after the authorized bandwidth.

[0023] In some embodiments, after sending the registration configuration information, it further includes:

[0024] Receive the online response information sent by the to - be - registered optical network unit.

[0025] In some embodiments, after sending the registration configuration information, it further includes:

[0026] Receive the service information sent by the to - be - registered optical network unit;

[0027] Adjust the equalization delay in the registration information of the to - be - registered optical network unit according to the service information and the authorized bandwidth in the registration configuration information.

[0028] In some embodiments, sending the registration configuration information includes:

[0029] Periodically send registration configuration information.

[0030] In some embodiments, the sending of the registration configuration information includes:

[0031] When a trigger condition is satisfied, send the registration configuration information.

[0032] In some embodiments, the trigger condition includes at least one of the following:

[0033] Receive a predetermined trigger message;

[0034] Receive service information of an optical network unit other than the optical network unit to be registered, and find a correctable error in the service information.

[0035] In a second aspect, an embodiment of the present disclosure provides a method for registering an optical network unit, which is used for an optical network unit. The method includes:

[0036] Receive the registration configuration information sent by the optical line terminal and start registration; wherein, the registration configuration information is sent by the optical line terminal according to the registration information of the optical network unit to be registered obtained in advance, and the registration information of the optical network unit to be registered is obtained before the start of this registration;

[0037] Configure according to the registration configuration information.

[0038] In some embodiments, after configuring according to the registration configuration information, it further includes:

[0039] Send an online response message to the optical line terminal.

[0040] In some embodiments, before receiving the registration configuration information sent by the optical line terminal, it further includes:

[0041] Send a trigger message to the optical line terminal.

[0042] In a third aspect, an embodiment of the present disclosure provides a method for writing registration information, which is used for a pre-optical network unit. The method includes:

[0043] Complete registration for the optical line terminal to obtain the registration information of the pre-optical network unit;

[0044] Receive modification information corresponding to the optical network unit to be registered;

[0045] According to the modification information, trigger the optical line terminal to modify the registration information of the pre-optical network unit to the registration information of the optical network unit to be registered.

[0046] In some embodiments, the completion of registration includes sending at least one response message to the optical line terminal;

[0047] The response information is sent through a registration channel different from the service channel.

[0048] In a fourth aspect, an embodiment of the present disclosure provides an optical line terminal, which includes:

[0049] A memory storing one or more programs, which when executed by the one or more processors, cause the optical line terminal to implement any of the above methods for registering an optical network unit;

[0050] One or more I / O interfaces connected between the processor and the memory and configured to implement information interaction between the processor and the memory.

[0051] In a fifth aspect, an embodiment of the present disclosure provides an optical network unit, which includes:

[0052] A memory storing one or more programs, which when executed by the one or more processors, cause the optical network unit to implement any of the above methods for registering an optical network unit;

[0053] One or more I / O interfaces connected between the processor and the memory and configured to implement information interaction between the processor and the memory.

[0054] In a sixth aspect, an embodiment of the present disclosure provides a pre - optical network unit, which includes:

[0055] A memory storing one or more programs, which when executed by the one or more processors, cause the pre - optical network unit to implement any of the above methods for writing registration information;

[0056] One or more I / O interfaces connected between the processor and the memory and configured to implement information interaction between the processor and the memory.

[0057] In a seventh aspect, an embodiment of the present disclosure provides a registration device for connecting to an optical line terminal. The registration device includes:

[0058] A registration module configured to complete registration for the optical line terminal to obtain the registration information of the registration device; wherein, the response information uploaded during the completion of registration to the optical line terminal is sent through a registration channel different from the service channel;

[0059] A receiving module configured to receive modification information corresponding to the optical network unit to be registered;

[0060] A modification module configured to trigger the optical line terminal to modify the registration information of the registration device to the registration information of the optical network unit to be registered according to the modification information.

[0061] It can be seen that in the embodiments of the present disclosure, before the specific registration step starts, the optical line terminal has already pre-obtained the registration information for the optical network unit to be registered. Therefore, during the registration process, the optical line terminal can directly send the registration configuration information to the optical network unit to be registered according to the pre-obtained registration information, without the need to receive information from the optical network unit to be registered. That is to say, in the embodiments of the present disclosure, during the registration process, as long as the optical line terminal "sends information", and there is no conflict problem in sending information. Therefore, there is no need to open a quiet window during the registration process, avoiding the impact on the system caused by window opening, and greatly reducing the delay of service information.

[0062] Furthermore, the total amount of information transmitted during the registration process in the embodiments of the present disclosure is also reduced. For example, there is no need to transmit identity identification request messages, ranging request messages, ranging response messages, etc. Therefore, even if the quiet window is not considered, the time and amount of information consumed by the registration process itself are also less.

[0063] Thus, the embodiments of the present disclosure can achieve rapid registration of the optical network unit, reduce the delay of service information, and meet the requirements of services with strict transmission delay requirements such as mobile fronthaul, mobile backhaul, high-definition video services, and augmented reality (AR) services. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The drawings are used to provide a further understanding of the embodiments of the present disclosure, and constitute a part of the specification. They are used to explain the present disclosure together with the embodiments of the present disclosure, and do not constitute a limitation to the present disclosure. By describing the detailed exemplary embodiments with reference to the drawings, the above and other features and advantages will become more obvious to those skilled in the art. In the drawings:

[0065] Figure 1 It is a schematic block diagram of the composition of a passive optical network provided by the embodiments of the present disclosure;

[0066] Figure 2 It is a signaling diagram of a network unit registration method in the related art provided by the embodiments of the present disclosure;

[0067] Figure 3 It is a flowchart of a method for registering an optical network unit provided by the embodiments of the present disclosure;

[0068] Figure 4 It is a signaling diagram of a method for registering an optical network unit provided by the embodiments of the present disclosure;

[0069] Figure 5 It is a flowchart of another method for registering an optical network unit provided by the embodiments of the present disclosure;

[0070] Figure 6Flow chart of some steps in another method for registering an optical network unit provided by an embodiment of the present disclosure;

[0071] Figure 7 Flow chart of some steps in another method for registering an optical network unit provided by an embodiment of the present disclosure;

[0072] Figure 8 Schematic block diagram of the composition of another passive optical network provided by an embodiment of the present disclosure;

[0073] Figure 9 Flow chart of another method for registering an optical network unit provided by an embodiment of the present disclosure;

[0074] Figure 10 Flow chart of another method for registering an optical network unit provided by an embodiment of the present disclosure;

[0075] Figure 11 Flow chart of a method for writing registration information provided by an embodiment of the present disclosure;

[0076] Figure 12 Block diagram of the composition of an optical line terminal provided by an embodiment of the present disclosure;

[0077] Figure 13 Block diagram of the composition of an optical network unit provided by an embodiment of the present disclosure;

[0078] Figure 14 Block diagram of the composition of a pre - optical network unit provided by an embodiment of the present disclosure;

[0079] Figure 15 Block diagram of the composition of a registration device provided by an embodiment of the present disclosure. Detailed implementation manners

[0080] To enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the methods for registering an optical network unit, the method for writing registration information, the optical line terminal, the optical network unit, the pre - optical network unit, and the registration device provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0081] In the following, the embodiments of the present disclosure will be described more fully with reference to the accompanying drawings. However, the disclosed embodiments can be embodied in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0082] The embodiments of the present disclosure may be described with reference to the plan views and / or cross - sectional views by means of the ideal schematic diagrams of the present disclosure. Therefore, the example illustrations can be modified according to the manufacturing technology and / or tolerances.

[0083] In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments may be combined with each other.

[0084] The terms used in the present disclosure are only for describing specific embodiments and are not intended to limit the present disclosure. As used in the present disclosure, the term "and / or" includes any and all combinations of one or more related listed items. As used in the present disclosure, the singular forms "a" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. As used in the present disclosure, the terms "comprising", "made of", specify the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their groups.

[0085] Unless otherwise defined, all terms (including technical and scientific terms) used in the present disclosure have the same meaning as commonly understood by those of ordinary skill in the art. It will also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted as having an idealized or overly formal meaning unless the present disclosure clearly so defines.

[0086] The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications to the configurations formed based on the manufacturing process. Therefore, the regions illustrated in the drawings have schematic properties, and the shapes of the regions shown in the drawings illustrate the specific shapes of the regions of the elements, but are not intended to be restrictive.

[0087] Glossary

[0088] In the embodiments of the present disclosure, if there is no additional explanation, the meanings of the following technical terms should be understood according to the following explanations:

[0089] Among them, "registration" means that after the optical network unit (ONU) establishes a physical connection with the optical line terminal (OLT) (i.e., connects to the branch optical fiber), through information interaction, both the ONU and the OLT obtain the required information, so that the ONU can be effectively managed and controlled by the OLT, enter the working state, and realize the interaction of service information with the OLT.

[0090] Among them, "registration information" refers to the information required by the OLT during the registration process, which can be obtained through interaction with the ONU or calculated based on the information obtained through interaction with the ONU.

[0091] Among them, "registration configuration information" refers to the information that the ONU needs to obtain during the registration process. The ONU needs to configure its own state according to the registration configuration information to complete the registration process. Specifically, the registration configuration information may be a part of the registration information or calculated based on the registration information.

[0092] Reference Figure 1 Figure 1 , in some related technologies, a passive optical network may include an OLT located at a central office. The OLT is respectively connected to multiple branch optical fibers through an optical splitter, and each branch optical fiber may be connected to an ONU located at a user side.

[0093] Among them, some ONUs are only connected to the OLT through one upstream and downstream channel, and this channel is also called a "service channel" which is used to transmit service information. These ONUs are called first ONUs (ONU1 in the figure), or non-low-latency ONUs.

[0094] Exemplarily, the above service channel may specifically include an upstream channel (λ XGS-PONu ) and a downstream channel (λ XGS-PONd ) of a 10-Gigabit-Capable Symmetric PON (XGS-PON). Of course, the specific form of the service channel is not limited to this.

[0095] Among them, after each ONU completes registration, it works according to the authorized bandwidth configured by the OLT for it. Therefore, the upstream information of different ONUs will not interfere with each other. For an unregistered ONU, the upstream information it sends during the registration process may conflict with the upstream information of other ONUs, resulting in information loss, errors, etc.

[0096] To this end, during the registration process of the first ONU, the OLT needs to open a silent window in the service channel to suspend the upstream information of other ONUs. However, this will obviously cause serious delays in the transmission of service information and even fail to meet the requirements of services with strict transmission delay requirements such as mobile fronthaul, mobile backhaul, high-definition video services, and augmented reality (AR) services.

[0097] Specifically, the registration process of the first ONU can refer to Figure 2 , and includes:

[0098] S001. The OLT periodically opens a silent window in the service channel and broadcasts and sends an identity identification request message.

[0099] S002. If a first ONU has accessed (established a physical connection) the passive optical network but has not been registered yet, after receiving the identity identification request message, this first ONU sends an identity identification response message including its own identity identification to the OLT.

[0100] Among them, the identity identifier of the ONU is the unique identifier used to distinguish different ONU devices, and its specific form can vary according to the different forms of the passive optical network. Exemplarily, for ONUs in the GPON series, the identity identifier can be the serial number (SN); while for ONUs in the Ethernet Passive Optical Network (EPON) series, the identity identifier can be its media access control address (MAC address).

[0101] Among them, the first ONU can be the one that accesses and registers for the first time; it can also be the one that was offline after previous registration and then reconnects and reregisters.

[0102] S003. The OLT receives the identity identifier response message and closes the quiet window, determines that there is a first ONU that needs to be registered currently, completes the "discovery" of the ONU, and issues a logical identifier to the first ONU.

[0103] Among them, the logical identifier is the unique identifier assigned by the OLT to the ONU and used to identify the ONU in the passive optical network, and its specific form can vary according to the different forms of the passive optical network. Exemplarily, for the GPON series, the logical identifier of the ONU can be the ONU ID; while for the EPON series, the logical identifier of the ONU can be the logical link identifier (LLID) calculated based on the MAC address.

[0104] Among them, since the OLT has obtained the identity identifier of the first ONU and assigned a logical identifier to the first ONU at this time, the information sent by the OLT to the first ONU hereafter is essentially unicast rather than broadcast.

[0105] S004. The OLT opens the quiet window on the service channel again and sends a ranging request message to the first ONU.

[0106] S005. After receiving the ranging request message, the first ONU sends a ranging response message to the OLT.

[0107] S006. The OLT receives the ranging response message and closes the quiet window, then based on the time difference between the ranging request message and the ranging response message, the round-trip time (RTT) that can be calculated, and combined with the wavelength of the service channel, the equalization delay (Eqd) of the OLT relative to the first ONU can be calculated, completing the "ranging", and the equalization delay can be sent to the first ONU.

[0108] Among them, "equalization delay" is a parameter representing the time required for information to be transmitted between the OLT and the corresponding ONU, and it is essentially determined by the equivalent distance or logical distance between the OLT and the corresponding ONU. Of course, it should be understood that the specific parameter form of the equalization delay can be diverse. As long as a certain parameter (or information) can essentially represent the above content, then this parameter (or information) is called "equalization delay".

[0109] S007. The OLT calculates the authorized bandwidth allocated to the first ONU according to the equalization delay, and sends the authorized bandwidth to the first ONU.

[0110] S008. The first ONU configures its own state according to the received logical identifier, equalization delay, and authorized bandwidth, and completes the registration, so that it can start sending service information to the OLT according to the authorized bandwidth.

[0111] Among them, various information obtained by the OLT during the registration process can all be called registration information. For example, the identity identifier of the ONU, equalization delay, logical identifier, authorized bandwidth, etc. Or, some of the content may not belong to the registration information, such as the logical identifier and authorized bandwidth.

[0112] Among them, the information sent by the OLT to the ONU for the ONU to configure is the registration configuration information. The registration configuration information may specifically include the logical identifier, equalization delay, authorized bandwidth, etc. Among them, the registration configuration information can be a part of the registration information, or it can be calculated based on the registration information. For example, the authorized bandwidth can be calculated according to the equalization delay.

[0113] Among them, for different types of passive optical networks, the specific content of the registration configuration information may be different. For example, in the EPON series, the equalization delay may not be sent to the ONU, so it does not belong to the registration configuration information.

[0114] It can be seen that during the above registration process, in order to ensure that the identity identifier response message and ranging response message of the first ONU do not conflict with the upstream information of other ONUs, it is necessary to open a quiet window and stop the upload of service information of other ONUs, thus causing a delay in service information.

[0115] In some other related technologies, referring to Figure 1 , in the passive optical network, there may also be another part of ONUs that support "third-wavelength communication", and they are called the second ONUs (ONU2 in the figure), or low-delay ONUs.

[0116] In addition to being connected to the OLT through the above service channel, the second ONU is also connected to the OLT through another registration channel. The communication wavelength used in this registration channel is the third wavelength, which is different from the communication wavelength used in the service channel.

[0117] Exemplarily, the above registration channel includes the upstream channel (λ PONu ) and the downstream channel (λ PONd ) of the Gigabit-Capable Symmetric PON (GPON). Of course, the specific form of the registration channel is not limited to this, as long as it is different from the service channel.

[0118] It should be understood that the above service channel and registration channel are relatively independent, that is, the information transmission in the two does not affect each other.

[0119] Therefore, for the second ONU that supports third-wavelength communication, the registration-related information can be transmitted in the registration channel (the channel of the third wavelength), so that its registration process has no impact on the service information.

[0120] Among them, the specific process of registering in the registration channel can correspond to the specific process of the first ONU registering in the service channel (only the channels are different), and will not be described in detail here.

[0121] Although the ONU that supports third-wavelength communication does not cause delay in service information during registration, however, many ONUs already existing in the existing network do not support third-wavelength communication, or are non-low-latency ONUs (the first ONUs), and these ONUs still have latency problems.

[0122] In particular, during the popularization process of the new generation of communication networks (such as 5G communication networks), in order to take into account the existing network equipment and costs, it is usually impossible to completely use low-latency ONUs to build a passive optical network, but there will still be a phenomenon of coexistence of low-latency ONUs and non-low-latency ONUs for a long time.

[0123] In addition, for the ONU that supports third-wavelength communication, a quiet window still needs to be opened in the registration channel during its registration process. However, with the development of technology, the registration channel may also need to be used to transmit other useful information, and the transmission of this information will also cause a large delay due to the existence of the quiet window.

[0124] First aspect, referring to Figure 1 , the embodiments of the present disclosure provide a method for ONU registration.

[0125] The method of the embodiments of the present disclosure is used for the OLT to execute to complete the registration of the ONU.

[0126] Referring to Figure 3 、 Figure 4 , the method of the embodiments of the present disclosure includes:

[0127] S101. According to the registration information of the ONU to be registered obtained in advance, send down the registration configuration information to complete the registration of the ONU to be registered.

[0128] Among them, the registration information of the ONU to be registered is obtained before the start of this registration.

[0129] Before the start of this registration, the OLT has obtained in advance (and can save it) the registration information for the ONU to be registered through certain means (the specific means will be described later), and can store the registration information. Thus, when the registration process starts, the OLT can directly use the registration information it has obtained itself to obtain the registration configuration information and send it (such as broadcasting) to the ONU to be registered without obtaining information (registration information) from the ONU to be registered, for the ONU to be registered to perform configuration and complete the registration process.

[0130] It should be understood that only when a certain ONU is not registered does it need to be registered. Therefore, when this step (S101) starts, the ONU to be registered should still be in the state of "not starting registration", rather than having already carried out a part of the registration process.

[0131] It should be understood that since the registration information may be related to the access location (such as a certain branch optical fiber), the ONU to be registered should be connected to the location corresponding to its registration information.

[0132] It should be understood that although the registration information of the ONU to be registered needs to have been obtained before performing this step (S101), it does not mean that each time this step is performed, the step of the registration information of the ONU to be registered needs to be carried out first. That is, after the OLT obtains the registration information of the ONU to be registered, the subsequent registration information can be used multiple times to perform this step S101 (that is, perform registration).

[0133] Among them, the specific content of the sent registration configuration information can have multiple items (such as logical identifier, equalization delay, authorized bandwidth, etc.). These contents can be sent in one message at a time, or can be Figure 4 Sent in multiple times.

[0134] Among them, according to different specific application environments, the form of the ONU to be registered in the embodiments of the present disclosure can be different.

[0135] For example, as a way of this embodiment, the ONU to be registered can be an ONU that has been registered before, but then goes offline and "re" accesses.

[0136] Again, as another way of this embodiment, the ONU to be registered can be a "brand new" accessed ONU that has not been registered before.

[0137] Again, as another way of this embodiment, it can also be that a branch optical fiber was once connected to a certain ONU, and then "replaced" with the ONU to be registered (of course, the ONU to be registered is also new at this time).

[0138] It can be seen that in the embodiments of the present disclosure, before the specific registration step starts, the OLT has already pre-obtained the registration information for the ONU to be registered. Therefore, during the registration process, the OLT can directly send the registration configuration information to the ONU to be registered according to the pre-obtained registration information, without the need to receive information from the ONU to be registered. That is to say, in the embodiments of the present disclosure, during the registration process, as long as the OLT "sends information", and there is no conflict problem in sending information. Therefore, there is no need to open a quiet window during the registration process, avoiding the impact on the system caused by window opening and greatly reducing the delay of service information.

[0139] Furthermore, the total amount of information transmitted during the registration process in the embodiments of the present disclosure is also reduced. For example, there is no need to transmit identity identification request messages, ranging request messages, ranging response messages, etc. Therefore, even if the quiet window is not considered, the time and information volume consumed by the registration process itself are also less.

[0140] Thus, the embodiments of the present disclosure can achieve rapid registration of the ONU, reduce the delay of service information, and meet the requirements of services with strict transmission delay requirements such as mobile fronthaul, mobile backhaul, high-definition video services, and augmented reality (AR) services.

[0141] In some embodiments, the registration information includes at least one of the following:

[0142] The identity identification of the ONU; the identity identification of the ONU includes the serial number of the ONU or the MAC address of the ONU;

[0143] The equalization delay of the ONU.

[0144] To complete the registration, the OLT needs to obtain at least the identity identification and equalization delay (Eqd) of the ONU, that is, the registration information should include the corresponding relationship of "identity identification - equalization delay".

[0145] Specifically, the identity identification can be the above-mentioned serial number (SN) or MAC address, etc.

[0146] In some embodiments, the registration configuration information includes at least one of the following:

[0147] The logical identification of the ONU to be registered; the logical identification includes the ONU-ID of the ONU to be registered or the logical link identification of the ONU to be registered;

[0148] The equalization delay of the ONU;

[0149] The authorized bandwidth allocated to the ONU to be registered.

[0150] To complete the registration, the information sent by the OLT to the ONU to be registered should at least include the logical identifier assigned to the ONU to be registered and the authorized bandwidth, where the authorized bandwidth can be calculated based on the equalization delay (of course, it can also be determined by other means); meanwhile, in some passive optical networks, the equalization delay can also be sent as registration configuration information to the ONU to be registered.

[0151] Specifically, the identity identifier can be the above-mentioned serial number ONU-ID or logical link identifier (LLID), etc.

[0152] In some embodiments, there are preset protection intervals before and after the above-mentioned authorized bandwidth.

[0153] The authorized bandwidth in the embodiments of the present disclosure is obtained based on the pre-stored equalization delay, rather than the equalization delay measured in real time. Therefore, there may be certain errors (such as errors caused by changes in the overall situation of the passive optical network). Therefore, before and after the authorized bandwidth allocated in the embodiments of the present disclosure, there should be unused time, that is, there is a large protection interval, so as to ensure that when there is an error in the authorized bandwidth, the OLT can still receive the service information of the ONU to be registered in the protection interval and avoid service information conflicts.

[0154] Of course, the specific content, form, etc. of the registration information and registration configuration information can be adjusted as needed. For example, if the equalization delay is not sent to the ONU to be registered, it does not belong to the registration information. Another example is that the logical identifier, authorized bandwidth, etc. may not belong to the registration information (so it is calculated before each transmission), but can also be directly included in the registration information (so it is extracted from the registration information before each transmission).

[0155] In some embodiments, sending the registration configuration information (S101) includes: periodically sending the registration configuration information.

[0156] As a way in the embodiments of the present disclosure, the registration configuration information can be sent periodically and repeatedly, that is, after obtaining the registration information of the OUN to be registered, as long as the ONU to be registered has not started registration (for example, it is found that the ONU to be registered is offline), the registration configuration information can be sent once every predetermined time to "try" to let the ONU to be registered complete the registration.

[0157] According to the above method, before obtaining the authorized bandwidth, the ONU to be registered does not need to send any information and will not affect the transmission of service information.

[0158] In some embodiments, sending the registration configuration information (S101) includes: when the trigger condition is met, sending the registration configuration information.

[0159] In some embodiments, the trigger condition includes at least one of the following:

[0160] Receive a predetermined trigger message;

[0161] Receive service information of an ONU other than the ONU to be registered, and find correctable errors in the service information.

[0162] Alternatively, as another way of the embodiments of the present disclosure, it may also be to confirm that the ONU to be registered has been accessed through certain conditions, so as to trigger the issuance of registration configuration information (i.e., trigger the registration process).

[0163] Specifically, it may be that the ONU to be registered actively sends a trigger message to the OLT when it needs to be registered (such as when accessing or receiving a user's command), so that the OLT starts to issue registration configuration information only after receiving the trigger message.

[0164] Among them, the above trigger message can be a short message, so the probability of conflict with the service information uploaded by other ONUs is relatively low; and even when the short message conflicts with the service information, although it will cause errors in the service information, the error is usually correctable. Therefore, when the OLT also finds that there are errors in the received service information and the errors can be corrected, it is considered that the ONU to be registered actually sends a trigger message, so it starts to issue registration configuration information (i.e., starts the registration process).

[0165] According to the above method, the OLT issues registration configuration information only when the ONU to be registered actually needs to be registered, and there will be no useless information transmission, which can reduce the occupancy of the downstream channel.

[0166] In some embodiments, after issuing the registration configuration information (S101), it further includes:

[0167] S102. Receive the online response information sent by the ONU to be registered.

[0168] The ONU can complete registration after receiving the registration configuration information and can upload service information within the authorized bandwidth.

[0169] However, in the embodiments of the present disclosure, during the registration process, the OLT only issues information and does not receive information from the ONU to be registered, so the OLT cannot determine whether the ONU to be registered has received the registration configuration information and completed registration. Therefore, referring to Figure 5 , the ONU to be registered can feedback online response information to the OLT in the authorized bandwidth configured for it after receiving the registration configuration information and completing registration.

[0170] Correspondingly, the OLT will determine that the registration of the ONU to be registered has been completed only after receiving the online response information; conversely, if the OLT does not receive the online response information within a predetermined time after the registration configuration information, it can be considered that the ONU to be registered fails to complete the registration (such as not being connected, not powered on, etc.), and the registration configuration information needs to be sent again at a suitable opportunity later.

[0171] Of course, the specific form of the online response information can be diverse. For example, the online response information can be implemented using the existing Acknowledge message. As shown in the following table, where ONU-ID is the logical identifier assigned to the ONU to be registered, SeqNo is 0, and Completion code is 0. Of course, the online response information can also be in the form of other messages.

[0172]

[0173] Of course, in some cases (such as when the registration configuration information is sent after meeting the trigger conditions), it can also be defaulted that the ONU to be registered has surely received the registration configuration information and completed the registration, so that the online response information is not required. The OLT only needs to wait for the service information of the ONU to be registered after sending the registration configuration information.

[0174] In some embodiments, after sending the registration configuration information (S101), it further includes:

[0175] S103. Receive the service information sent by the ONU to be registered.

[0176] S104. Adjust the equalization delay in the registration information of the ONU to be registered according to the service information and the authorized bandwidth of the registration configuration information.

[0177] Refer to Figure 4 、 Figure 5 , after the registration is completed, the ONU to be registered can start sending service information to the OLT according to the authorized bandwidth allocated to it. As before, since the authorized bandwidth in the embodiments of the present disclosure is obtained based on the pre-stored equalization delay rather than the equalization delay obtained by real-time testing, there may be a certain error (for example, the error caused by the change of the overall condition of the passive optical network).

[0178] For this reason, after the ONU to be registered starts the service information transmission, the equalization delay can be re-determined according to the time of receiving the service information, etc., and the equalization delay in the obtained service information can be adjusted (or updated) to ensure the accuracy of the equalization delay, so as to "correct" the authorized bandwidth in the subsequent (such as the next registration).

[0179] In some embodiments, refer to Figure 6 , the process of obtaining the registration information of the ONU to be registered in advance includes:

[0180] S1001. Obtain the registration information of the ONU to be registered during the registration or working process completed by the ONU to be registered before this registration.

[0181] That is to say, before sending the registration configuration information (S101), the method of the embodiment of the present disclosure may further include the step of obtaining the registration information of the registered ONU.

[0182] Specifically, before the start of this registration process (S101), during other registration processes of the ONU to be registered, the OLT obtains the registration information of the ONU to be registered and saves it.

[0183] Alternatively, the above step may also be that before the start of this registration process (S101), the ONU to be registered was once in a working state, so that the OLT obtains the registration information of the ONU to be registered during the working state and saves it (such as the correction of the balanced delay for the above saving).

[0184] Of course, it should be understood that for this registration process (S101), at the beginning, the ONU to be registered must be in a state where registration has not started, that is, after the ONU to be registered is registered (or working) and the OLT obtains the registration information, it should go offline, and then this registration process can start.

[0185] Among them, the registration of the above ONU to be registered can be its first registration or re-registration.

[0186] Among them, the registration of the above ONU to be registered can be carried out in the manner of related technologies, or also in the manner of step S101 of the embodiment of the present disclosure.

[0187] Among them, the ONU to be registered here can be a low-latency ONU (the second ONU) supporting third-wavelength communication, or a non-low-latency ONU (the first ONU) not supporting third-wavelength communication.

[0188] In some embodiments, referring to Figure 7 , the process of obtaining the registration information of the ONU to be registered in advance includes:

[0189] S1003. Modify the registration information of the pre-ONU to the registration information of the ONU to be registered.

[0190] That is to say, before sending the registration configuration information (S101), the method of the embodiment of the present disclosure may further include the step of obtaining the registration information of the registered ONU.

[0191] As another implementation manner of the embodiments of the present disclosure, the above steps may also be that, before the start of the current registration process (S101), the OLT already has the registration information of another ONU (pre-ONU), and by modifying the registration information of the pre-ONU, the registration information of the ONU to be registered can also be obtained.

[0192] Wherein, the above pre-ONU is an ONU different from the ONU to be registered, and it is connected to a specific location (such as a specific branch optical fiber) where the ONU to be registered should be connected. The pre-ONU may be an actual entity device that has been connected to the passive optical network; or, the pre-ONU may not be an entity device or has not been connected to the passive optical network, but as long as the OLT can obtain the registration information of the pre-ONU in advance.

[0193] Wherein, since the pre-OUN and the ONU to be registered should be connected at the same location, information such as their equalization delay (Eqd) should be the same. Therefore, the above modification mainly refers to modifying the identity identifier of the pre-OUN in the registration information of the pre-OUN to the identity identifier of the ONU to be registered, or in other words, modifying the corresponding relationship of "identity identifier - equalization delay"; so that the registration information of the pre-OUN becomes the registration information of the ONU to be registered.

[0194] Wherein, the manner of triggering the above modification is diverse.

[0195] For example, it may be that the network management sends modification information to the OLT through a special operation to modify the registration information of the pre-OUN stored therein.

[0196] Or, it may also be that after the pre-ONU completes registration, it sends modification information to the OLT itself to modify the registration information of the pre-OUN stored therein.

[0197] In some embodiments, before modifying the registration information of the pre-ONU to the registration information of the ONU to be registered (S1003), it further includes:

[0198] S1002. Complete the registration of the pre-ONU, and obtain the registration information of the pre-ONU during the registration process.

[0199] That is to say, before modifying the registration information of the pre-ONU, the pre-ONU can actually be connected to the passive optical network and complete the registration, so that the OLT can obtain the registration information for the pre-ONU during the registration process and use it for subsequent modification.

[0200] Specifically, it can be that when there is already an ONU connected to a passive optical network and it is necessary to replace this ONU with another ONU later, the registration information of this previous ONU in the OLT can be modified in advance, so that the ONU to be replaced is the pre - installed ONU, and the newly replaced ONU is the ONU to be registered.

[0201] Alternatively, it can also be that after determining to connect an ONU to be registered at a certain position, first connect a specific pre - installed ONU (registration device) to this position and make the above - mentioned modifications, and then replace the pre - installed ONU with the ONU to be registered, or connect the ONU to be registered to this position simultaneously (for example, the branch optical fiber can have two ports, respectively connecting the pre - installed ONU and the ONU to be registered).

[0202] That is to say, the above method is equivalent to using the pre - installed ONU to enable the OLT to obtain the registration information of the ONU to be registered in advance, and then actually connecting the ONU to be registered.

[0203] In some embodiments, completing the registration of the pre - installed ONU includes receiving at least one response message sent by the pre - installed ONU; wherein, the response message is received through a registration channel different from the service channel.

[0204] According to certain registration methods, the registration of the ONU can include information interaction between the OLT and the ONU (for example, using the registration methods in related technologies). To prevent the registration of the pre - installed ONU from causing delays in service information, the pre - installed ONU can be a low - latency ONU (second ONU) that supports third - wavelength communication, and during the registration process, at least the upstream information is transmitted through the service channel (so there is no need to open a quiet window in the service channel).

[0205] Of course, when the registration configuration information of the ONU to be registered is issued in the subsequent process, it can still be issued through the service channel, that is, the ONU to be registered can be a non - low - latency ONU (first ONU) that does not support third - wavelength communication.

[0206] That is to say, the above method can be: when registering a non - low - latency ONU (first ONU), a low - latency ONU (second ONU) can be used as the pre - installed ONU to avoid the non - low - latency ONU registering in the manner of related technologies and minimize the delay of service information to the greatest extent.

[0207] Of course, it should be understood that as long as the upstream information during the registration process is sent in the registration channel, there is no need to open a quiet window in the service channel, and there will be no delay in service information; therefore, the present disclosure embodiments do not limit the transmission channel of the downstream information during the registration process.

[0208] An exemplary description is given below on how to use a low-latency ONU (an ONU supporting third-wavelength communication, a second ONU) as a preposed ONU to obtain the registration information of an ONU to be registered in advance.

[0209] Among them, the passive optical network structure can refer to Figure 1 , including multiple ONUs connected to the OLT. Some of these ONUs are low-latency ONUs, that is, each ONU2 in the figure, and the other part is non-low-latency ONUs (ONUs that do not support third-wavelength communication, first ONUs), that is, each ONU1 in the figure.

[0210] Among them, the service channel is the XGS-PON upstream and downstream channels, and the registration channel of the second ONU is the GPON upstream and downstream channels.

[0211] Specifically, the above process may include:

[0212] A101. The OLT opens a quiet window on the GPON channel and broadcasts an identity identification request message through the GPON downstream channel.

[0213] A102. The OLT receives the identity identification response message sent by the second ONU through the GPON upstream channel and closes the quiet window, thereby obtaining the serial number (SN) of the second ONU carried in the identity identification response message, and obtaining the ONU ID to be assigned to the second ONU according to the serial number.

[0214] A103. The OLT opens a quiet window on the GPON line channel again and sends a ranging request message to the second ONU through the GPON downstream channel.

[0215] A104. The OLT receives the ranging response message sent by the second ONU on the GPON upstream channel, calculates the equalization delay (Eqd), thereby obtaining the registration information of the second ONU (preposed ONU).

[0216] A105. The OLT assigns an ONU ID and authorized bandwidth to the second ONU through the GPON downstream channel according to the above registration information, and optionally, the equalization delay can also be assigned to the second ONU through the GPON downstream channel, thereby completing the registration of the second ONU.

[0217] A106. The OLT receives modification information (which can come from the network management or from the second ONU), and modifies the serial number in the registration information of the second ONU (preposed ONU) to the serial number of the first ONU (ONU to be registered) to be replaced, thereby obtaining the registration information of the OUN to be registered in advance.

[0218] Among them, the registration process of the above-mentioned second ONU (front-end ONU) is completely carried out in the registration channel, so it will not affect the service information; and even if the ONU to be registered is the first ONU, since the registration process of the ONU to be registered only includes information "download", there is no need to open a quiet window either. That is to say, during the entire registration process, the service channel does not need to open a quiet window at all, and it will not affect the transmission of service information.

[0219] In some embodiments, referring to Figure 8 , the registration channel of the second ONU used above may only include the upstream channel and not the downstream channel. For example, the second ONU may only support the upstream channel (λ XGS-PONu ) and the downstream channel (λ XGS-PONd ) of XGS-PON, as well as the upstream channel (λ PONu ) of GPON.

[0220] Thus, during the registration process of the above-mentioned second ONU, for all the information (identity identification response message, ranging response message) uploaded by the second ONU to the OLT, it is still received by the OLT after opening the quiet window in the registration channel; while all the information (identity identification request message, ranging request message, registration configuration information) sent by the OLT to the second ONU is sent through the service channel.

[0221] Among them, according to the above method, it is possible that when the service channel does not open the quiet window, there is a situation where the identity identification request message is broadcast and sent through the service channel. Therefore, if there is an unregistered first ONU, it may "mistakenly think" that the identity identification request message is for itself, and thus wrongly feedback the identity identification response message in the service channel, conflicting with the service information of other ONUs.

[0222] To avoid the above situation, it is necessary to modify the format of the identity identification request message in the registration channel to distinguish the identity identification request message for the second ONU and the identity identification request message for the first ONU, so that the first ONU will not wrongly respond to the identity identification request message for the second ONU. Among them, the specific methods for distinguishing different identity identification request messages are diverse and will not be described in detail here.

[0223] Of course, when the OLT sends the ranging request message, registration configuration information, etc. in the above process, it has already obtained the identity identification of the second ONU, so these information are unicast and there is no such problem.

[0224] In a second aspect, an embodiment of the present disclosure provides a method for ONU registration, which is used for ONU.

[0225] The method of the embodiment of the present disclosure is used for an ONU (i.e., the ONU to be registered) to implement the above registration process.

[0226] Referring to Figure 9 , the method of the embodiment of the present disclosure includes:

[0227] S201. Receive the registration configuration information sent by the OLT and start the registration.

[0228] Among them, the registration configuration information is sent by the OLT according to the registration information of the ONU to be registered obtained in advance, and the registration information of the ONU to be registered is obtained before the start of this registration.

[0229] After the ONU is accessed, if the OLT has obtained the registration information for this ONU in advance, then this ONU is the ONU to be registered. Thus, this ONU will directly receive the registration configuration information sent by the OLT and start the registration.

[0230] It should be understood that the above "start the registration" means that the ONU only starts its own registration process after receiving the registration configuration information, and there are no steps such as sending the identity identification response message and sending the ranging response message before.

[0231] S202. Configure according to the registration configuration information.

[0232] After the ONU receives the registration configuration information for itself, it can configure itself according to the content of this registration configuration information (such as the authorized bandwidth, logical identification, etc.), so that itself completes the registration, enters the working state, and can start uploading service information.

[0233] In some embodiments, referring to Figure 10 , after configuring according to the registration configuration information (S202), it further includes:

[0234] S203. Send an online response message to the OLT.

[0235] As before, after the ONU finishes configuring according to the registration configuration information and enters the working state, it can send an online response message to the OLT in the authorized bandwidth to notify the OLT that its registration is completed.

[0236] In some embodiments, referring to Figure 10 , before receiving the registration configuration information sent by the OLT (S201), it further includes:

[0237] S200. Send a trigger message to the OLT.

[0238] As before, when the ONU needs to perform registration (such as when accessing, or receiving a user's command), it can send an online response message (such as a short message) to the OLT to notify the OLT to start sending the registration configuration information.

[0239] In a third aspect, embodiments of the present disclosure provide a method for writing registration information for a pre - ONU.

[0240] The method of the embodiments of the present disclosure is used for the above - mentioned pre - ONU to register and modify the registration information of the pre - OUN in the OLT to obtain the registration information of the to - be - registered OUN.

[0241] Referring to Figure 11 , the method of the embodiments of the present disclosure includes:

[0242] S301. Complete the registration to enable the OLT to obtain the registration information of the pre - ONU.

[0243] After the pre - ONU accesses the passive optical network, it completes the registration. Specifically, it can adopt the methods of related technologies or the method of step S101 of the embodiments of the present disclosure, which will not be described in detail here.

[0244] During the registration process, the OLT obtains the registration information of the pre - OUN for the pre - ONU. For example, if the identity identifier of the pre - ONU is SN A and the equalization delay is Eqd1, the registration information of the pre - OUN obtained by the OLT includes the corresponding relationship of "SN A - Eqd1".

[0245] S302. Receive the modification information corresponding to the to - be - registered ONU.

[0246] The pre - ONU receives the modification information on how to modify. For example, the modification information can be input by the user and may include the identity identifier of the to - be - registered ONU, such as SN B.

[0247] S303. According to the modification information, trigger the OLT to modify the registration information of the pre - ONU to the registration information of the to - be - registered ONU.

[0248] In the pre - ONU, according to the above - mentioned modification information (such as SN B), an instruction can be sent to the OLT to enable the OLT to modify the registration information of the pre - ONU therein to obtain the registration information of the to - be - registered ONU. For example, the corresponding relationship of "SN A - Eqd1" in the registration information of the pre - ONU can be modified to "SN B - Eqd1".

[0249] It should be understood that there is not necessarily an order relationship between step S302 and step S303, as long as both are completed before step S303.

[0250] It can be seen that at this time, the OLT has already pre - obtained the registration information of the to - be - registered OUN. Therefore, when the to - be - registered ONU accesses and registers, there is no need to open a quiet window, which can reduce the delay.

[0251] It should be understood that after the registration information is modified, for the OLT, the pre - installed ONU becomes an "unregistered" state. Therefore, the pre - installed ONU should no longer transmit service data at this time.

[0252] Specifically, it can be that after the modification is completed, the pre - installed ONU is removed from the branch optical fiber and replaced with the ONU to be registered. Of course, if the branch optical fiber has two ports, the pre - installed ONU can also be retained, and the ONU to be registered can be connected to the other port at the same time.

[0253] In some embodiments, completing registration includes receiving at least one request message sent by the OLT and sending at least one response message to the OLT; the response message is sent through a registration channel different from the service channel.

[0254] That is to say, the pre - installed ONU can be a low - latency ONU (ONU supporting third - wavelength communication, the second ONU), so that its registration process will not cause latency of service information.

[0255] Furthermore, when the ONU to be registered is a non - low - latency ONU (ONU not supporting third - wavelength communication, the first ONU), it is equivalent to writing the registration information of the non - low - latency ONU to be registered by "borrowing" the low - latency pre - installed ONU, so as to ensure that the non - low - latency ONU to be registered does not cause latency to service information even during the first registration.

[0256] Fourthly, referring to Figure 12 , the embodiments of the present disclosure provide an OLT, which includes:

[0257] A memory, on which one or more programs are stored. When the one or more programs are executed by one or more processors, the OLT implements any one of the above - mentioned ONU registration methods;

[0258] One or more I / O interfaces, connected between the processor and the memory, configured to implement information interaction between the processor and the memory.

[0259] Fifthly, referring to Figure 13 , the embodiments of the present disclosure provide an ONU, which includes:

[0260] A memory, on which one or more programs are stored. When the one or more programs are executed by one or more processors, the ONU implements any one of the above - mentioned ONU registration methods;

[0261] One or more I / O interfaces, connected between the processor and the memory, configured to implement information interaction between the processor and the memory.

[0262] Sixthly, referring to Figure 14, an embodiment of the present disclosure provides a pre - installed ONU, which includes:

[0263] A memory storing one or more programs, when the one or more programs are executed by one or more processors, enabling the pre - installed ONU to implement any of the above - mentioned methods for writing registration information;

[0264] One or more I / O interfaces connected between the processor and the memory, configured to enable information interaction between the processor and the memory.

[0265] In a seventh aspect, referring to Figure 15 , an embodiment of the present disclosure provides a registration device for connecting to an OLT. The registration device includes:

[0266] A registration module configured to complete registration for the OLT to obtain the registration information of the registration device; wherein, the response information uploaded during the registration process to the OLT is sent through a registration channel different from the service channel;

[0267] A receiving module configured to receive modification information corresponding to the ONU to be registered;

[0268] A modification module configured to trigger the OLT to modify the registration information of the registration device to the registration information of the ONU to be registered according to the modification information.

[0269] The registration device of the embodiment of the present disclosure can be a low - latency ONU (but may not have the ability to transmit service information). This registration device can be pre - connected to a passive ONU so that the OLT can pre - obtain its own registration information during the registration process; and, this registration device can also receive modification information from users, and according to this modification information, control the OLT to modify the registration information (such as modifying the identity identifier) to obtain the registration information of the ONU to be registered for subsequent registration of the ONU to be registered.

[0270] Those of ordinary skill in the art can understand that all or some of the steps, systems, and functional modules / units in the devices disclosed above can be implemented as software, firmware, hardware, and their appropriate combinations.

[0271] In a hardware implementation, the division of the functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component can have multiple functions, or a function or step can be executed by several physical components in cooperation.

[0272] Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit (CPU), a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-temporary medium) and a communication medium (or temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH) or other disk storage; read-only compact disk (CD-ROM), digital versatile disk (DVD) or other optical disk storage; magnetic cassettes, magnetic tapes, disk storage or other magnetic storage; any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0273] The present disclosure has disclosed example embodiments, and although specific terms are employed, they are used and should be interpreted only in a general illustrative sense and not for limiting purposes. In some instances, it will be apparent to those skilled in the art that, unless otherwise expressly stated, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. Therefore, those skilled in the art will appreciate that various changes in form and detail may be made without departing from the scope of the present disclosure as set forth in the appended claims.

Claims

1. A method for registering an optical network unit, for an optical line terminal, the method comprising: Issuing registration configuration information according to the registration information of the optical network unit to be registered obtained in advance, so as to complete the registration of the optical network unit to be registered; wherein, the registration information of the optical network unit to be registered is obtained before the start of this registration; Wherein, the process of obtaining the registration information of the optical network unit to be registered in advance includes: Modifying the registration information of the pre - optical network unit to the registration information of the optical network unit to be registered; wherein, the pre - optical network unit is an optical network unit different from the optical network unit to be registered, and is connected to the same location as the optical network unit to be registered.

2. The method according to claim 1, wherein Before modifying the registration information of the pre - optical network unit to the registration information of the optical network unit to be registered, it further includes: Completing the registration of the pre - optical network unit, and obtaining the registration information of the pre - optical network unit during the registration process.

3. The method according to claim 2, wherein, Completing the registration of the pre - optical network unit includes receiving at least one response information sent by the pre - optical network unit; wherein, the response information is received through a registration channel different from the service channel.

4. The method according to claim 1, wherein, The registration information includes at least one of the following: The identity identifier of the optical network unit; the identity identifier of the optical network unit includes the serial number of the optical network unit, or the MAC address of the optical network unit; The equalization delay of the optical network unit.

5. The method according to claim 1, wherein The registration configuration information includes at least one of the following: The logical identifier of the optical network unit to be registered; the logical identifier includes the ONU - ID of the optical network unit to be registered, or the logical link identifier of the optical network unit to be registered; The equalization delay of the optical network unit; The authorized bandwidth allocated to the optical network unit to be registered.

6. The method according to claim 5, wherein, There are preset protection intervals before and after the authorized bandwidth.

7. The method according to claim 5, wherein After issuing the registration configuration information, it further includes: Receiving the online response information sent by the optical network unit to be registered.

8. The method according to claim 1, wherein After issuing the registration configuration information, it further includes: Receiving the service information sent by the optical network unit to be registered; Adjusting the equalization delay in the registration information of the optical network unit to be registered according to the service information and the authorized bandwidth in the registration configuration information.

9. The method according to claim 1, wherein The issuing of the registration configuration information includes: Periodically issuing the registration configuration information.

10. The method according to claim 1, wherein, The issuing of the registration configuration information includes: When the trigger condition is met, issuing the registration configuration information.

11. The method according to claim 10, wherein, The trigger condition includes at least one of the following: Receiving a predetermined trigger information; Receiving the service information of an optical network unit other than the optical network unit to be registered, and finding a correctable error in the service information.

12. A method for registering an optical network unit, for an optical network unit, the method comprising: Receiving the registration configuration information issued by the optical line terminal and starting to register; wherein, the registration configuration information is issued by the optical line terminal according to the registration information of the optical network unit to be registered obtained in advance, and the registration information of the optical network unit to be registered is obtained before the start of this registration; Configuring according to the registration configuration information. Among them, the process of obtaining the registration information of the optical network unit to be registered in advance includes: Modifying the registration information of the preposed optical network unit to the registration information of the optical network unit to be registered; wherein, the preposed optical network unit is an optical network unit different from the optical network unit to be registered, and is connected to the same location as the optical network unit to be registered.

13. The method according to claim 12, wherein, After being configured according to the registration configuration information, it further includes: Sending an online response message to the optical line terminal.

14. The method according to claim 12, wherein, Before receiving the registration configuration information sent by the optical line terminal, it further includes: Sending a trigger message to the optical line terminal.

15. An optical line terminal, which includes: A memory on which one or more programs are stored. When the one or more programs are executed by the one or more processors, the optical line terminal implements the method for registering an optical network unit according to any one of claims 1 to 11; One or more I / O interfaces, connected between the processor and the memory, configured to implement the information interaction between the processor and the memory.

16. A registration device for connecting to an optical line terminal, the registration device includes: A registration module configured to complete registration for the optical line terminal to obtain the registration information of the registration device; wherein, the response information uploaded during the completion of registration is sent through a registration channel different from the service channel; A receiving module configured to receive the modification information corresponding to the optical network unit to be registered; A modification module configured to trigger the optical line terminal to modify the registration information of the registration device to the registration information of the optical network unit to be registered according to the modification information.

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