Energy saving method of optical line terminal and optical line terminal

Abstract

The application provides an energy-saving method of an optical line terminal and the optical line terminal, the optical line terminal comprising at least one service single board and at least one optical module connected to each service single board, and the method comprises the following steps: in the case that a first optical module meets a first energy-saving condition, a first function of the first optical module is controlled to be closed, wherein the first optical module is any optical module comprised in the optical line terminal, and the first function comprises a sending function; in the case that a first message is received, the first function of the first optical module is controlled to be started, wherein the first message is used for indicating that an optical network terminal is connected to the first optical module. The application can realize energy saving of the optical line terminal.

Description

Technical Field

[0001] This application relates to the field of optical communication technology, and in particular to an energy-saving method for an optical line terminal and the optical line terminal itself. Background Technology

[0002] An optical line terminal (OLT) is a device located in a carrier's central office or equipment room. It is the core component of a passive optical network (PON) system. An OLT typically consists of a chassis, a main control board, service boards, and optical modules. The main control board and service boards are housed in the chassis, while the optical modules are inserted into the optical interface slots of the main control board and service boards.

[0003] Currently, after the OLT is deployed, the main control board, service boards, and optical modules within the OLT are fully powered on and kept powered on to allow optical network terminals (ONTs) to connect at any time. This means that even without an ONT connection, the optical modules and service boards need to remain powered on, wasting a significant amount of power. Summary of the Invention

[0004] This application provides an energy-saving method for an optical line terminal and an optical line terminal itself, which can reduce the waste of electrical energy by the optical line terminal. The technical solution is as follows:

[0005] In a first aspect, an energy-saving method for an optical line terminal is provided. The optical line terminal includes at least one service board and at least one optical module connected to each service board. The method includes:

[0006] When the first optical module meets the first energy-saving condition, the first optical module is controlled to disable the first function, wherein the first optical module is any optical module included in the optical line terminal, and the first function includes a transmission function. Upon receiving a first message, the first optical module is controlled to activate the first function, wherein the first message is used to indicate that there is an ONT connected to the first optical module.

[0007] In the technical solution provided in this application, optical modules that meet energy-saving conditions can be controlled to disable their first function, including the transmission function, so that the optical module no longer sends auto-discovery messages, effectively saving power. When an ONT is connected, the OLT can be notified via a first message that an ONT has connected to an optical module with its transmission function disabled. Then, the OLT can control the optical module with its transmission function disabled to restart its transmission function. In this way, the optical module can resend the auto-discovery message, enabling the connected ONT to successfully go online. Therefore, the method provided in this application can achieve energy saving for the OLT without affecting the normal online operation of the ONT.

[0008] In one possible implementation, upon receiving the first message, controlling the first optical module to activate the first function includes:

[0009] Upon receiving the first message from the network management device, control the first optical module to start the first function.

[0010] In the technical solution provided in this application, the network management device determines whether the ONT is connected to the optical module. If the ONT is connected to the optical module, the network management device sends a message to the OLT to notify the OLT to control the designated optical module that has disabled the first function to start the first function.

[0011] In one possible implementation, the outer shell of the optical network terminal (ONT) is equipped with a QR code. The first message is sent by the network management device to the optical line terminal after receiving the registration message corresponding to the ONT. The registration message is sent by the user terminal to the network management device by scanning the QR code.

[0012] In the technical solution provided in this application, a QR code can be set on the ONT shell. After receiving the ONT and connecting it to the ODN, the user can use their mobile phone to scan the QR code to enter the registration page. Then, the user fills in the registration information on the registration page. After the user completes the registration information, the mobile phone sends a registration message to the network management device, which carries the registration information filled in by the user. The network management device receives the registration information and compares it with the user's reserved information. If the registration information and the reserved information match, the network management device sends the aforementioned first message to the OLT.

[0013] In one possible implementation, the first message carries indication information for the first optical module.

[0014] In the technical solution provided in this application, for optical modules that have their first function turned off for energy saving, the OLT can control only the optical modules with ONT access to activate the first function that has been turned off, thus saving energy as much as possible.

[0015] In one possible implementation, controlling the first optical module to activate the first function includes:

[0016] The control optical line terminal activates the first function by turning on all optical modules, including the first optical module, that have had their first function disabled.

[0017] In the technical solution provided in this application, if it is determined that an ONT is connected to an optical module, but it is impossible to determine which optical module the ONT is connected to, then all optical modules that have had their first function disabled can be controlled to start the first function, so as to avoid the problem of the ONT being unable to go online.

[0018] In one possible implementation, the first function does not include the receiving function of the first optical module. Upon receiving the first message, the first optical module is controlled to activate the first function, including:

[0019] Upon receiving the first message from the ONT, the first optical module is controlled to activate the first function.

[0020] In the technical solution provided in this application, after the ONT connects to the ODN link (i.e., accesses the OLT, or is an optical module that accesses (connects to) the OLT), if it does not receive an automatic discovery message from the OLT within a preset time period, it sends a preset first message to the OLT.

[0021] In one possible implementation, the receiving function includes the functions of the receiving component and the SD pin. Upon receiving a first message, the function is activated by controlling the first optical module, including:

[0022] If a level flip is detected on the SD pin of the first optical module, it is determined that the first optical module has received the first message sent by the ONT through the receiving component, and then the first optical module is controlled to start the first function.

[0023] In one possible implementation, energy-saving control can also be applied to the business boards. The corresponding processing could be as follows:

[0024] If the first service board connected to the first optical module meets the second energy-saving condition, the first service board is controlled to shut down the second function. The first service board is any service board included in the optical line terminal, and the second function includes an automatic discovery function.

[0025] In the technical solution provided in this application, in order to further save energy in the OLT, the service board can also be controlled to shut down a second function, including the automatic discovery function, when the service board meets the energy-saving conditions.

[0026] In one possible implementation, the method further includes, in the case of energy saving for the OLT:

[0027] Upon receiving the first message, control the first service board to start the second function.

[0028] Secondly, an energy-saving device for an optical line terminal is provided, the optical line terminal including at least one service board and at least one optical module connected to each service board, the device comprising:

[0029] An energy-saving module is used to control the first optical module to shut down a first function when the first optical module meets a first energy-saving condition, wherein the first optical module is any optical module included in the optical line terminal, and the first function includes a transmission function.

[0030] The energy-saving module is used to control the first optical module to start the first function upon receiving a first message, wherein the first message is used to indicate that there is an optical network terminal (ONT) connected to the first optical module.

[0031] In one possible implementation, the energy-saving module is used for:

[0032] Upon receiving the first message from the network management device, the first optical module is controlled to activate the first function.

[0033] In one possible implementation, the outer casing of the optical network terminal (ONT) is equipped with a QR code;

[0034] The first message is sent by the network management device to the optical line terminal after receiving the registration message corresponding to the ONT. The registration message is sent by the user terminal to the network management device by scanning the QR code.

[0035] In one possible implementation, the first message carries indication information of the first optical module.

[0036] In one possible implementation, the energy-saving module is used for:

[0037] Control all optical modules in the optical line terminal, including the first optical module, that have had the first function disabled, and activate the first function.

[0038] In one possible implementation, the first function does not include the receiving function of the first optical module, and the energy-saving module is used for:

[0039] When the first optical module receives the first message sent by the ONT, it controls the first optical module to start the first function.

[0040] In one possible implementation, the energy-saving module is used for:

[0041] If a level flip is detected on the SD pin of the first optical module, it is determined that the first optical module has received the first message sent by the ONT through the receiving component;

[0042] Control the first optical module to activate the first function.

[0043] In one possible implementation, the energy-saving module is further used for:

[0044] When the first service board connected to the first optical module meets the second energy-saving condition, the first service board is controlled to shut down the second function, wherein the first service board is any service board included in the optical line terminal, and the second function includes an automatic discovery function.

[0045] In one possible implementation, the energy-saving module is also used for:

[0046] Upon receiving the first message, control the first service board to activate the second function.

[0047] Thirdly, an optical line terminal is provided, the optical line terminal including at least one service board and at least one optical module connected to each service board, the optical line terminal being used for:

[0048] When the first optical module meets the first energy-saving condition, the first optical module is controlled to shut down the first function, wherein the first optical module is any optical module included in the optical line terminal, and the first function includes the transmission function;

[0049] Upon receiving the first message, the system controls the first optical module to activate the first function, wherein the first message is used to indicate that an optical network terminal (ONT) is connected to the first optical module.

[0050] In one possible implementation, the optical line terminal is used for:

[0051] Upon receiving the first message from the network management device, the first optical module is controlled to activate the first function.

[0052] In one possible implementation, the outer casing of the optical network terminal (ONT) is equipped with a QR code;

[0053] The first message is sent by the network management device to the optical line terminal after receiving the registration message corresponding to the ONT. The registration message is sent by the user terminal to the network management device by scanning the QR code.

[0054] In one possible implementation, the first message carries indication information of the first optical module.

[0055] In one possible implementation, the optical line terminal is used for:

[0056] Control all optical modules in the optical line terminal, including the first optical module, that have had the first function disabled, and activate the first function.

[0057] In one possible implementation, the first function does not include the receiving function of the first optical module, and the optical line terminal is used for:

[0058] When the first optical module receives the first message sent by the ONT, it controls the first optical module to start the first function.

[0059] In one possible implementation, the optical line terminal is used for:

[0060] If a level flip is detected on the SD pin of the first optical module, it is determined that the first optical module has received the first message sent by the ONT through the receiving component;

[0061] Control the first optical module to activate the first function.

[0062] In one possible implementation, the optical line terminal is used for:

[0063] When the first service board connected to the first optical module meets the second energy-saving condition, the first service board is controlled to shut down the second function, wherein the first service board is any service board included in the optical line terminal, and the second function includes an automatic discovery function.

[0064] In one possible implementation, the optical line terminal is used for:

[0065] Upon receiving the first message, control the first service board to activate the second function.

[0066] Fourthly, a computer-readable storage medium is provided, including computer program instructions, which, when executed by an optical line terminal, enable the computing device cluster to perform the energy-saving method of the optical line terminal as described in the first aspect above.

[0067] Fifthly, a computer program product containing instructions is provided, which, when executed by an optical line terminal, causes the computing device cluster to perform the energy-saving method of the optical line terminal as described in the first aspect above. Attached Figure Description

[0068] Figure 1 This is a schematic diagram of an implementation scenario provided in an embodiment of this application;

[0069] Figure 2 This is a schematic diagram of the structure of an optical module provided in an embodiment of this application;

[0070] Figure 3 This is a schematic diagram of the structure of an OLT provided in an embodiment of this application;

[0071] Figure 4 This is a schematic diagram of a system architecture provided in an embodiment of this application;

[0072] Figure 5 This is a flowchart of an energy-saving method for an OLT provided in an embodiment of this application;

[0073] Figure 6 This is a flowchart of an energy-saving method for an OLT provided in an embodiment of this application;

[0074] Figure 7 This is a schematic diagram of an energy-saving device structure for an OLT provided in an embodiment of this application. Detailed Implementation

[0075] This application provides an energy-saving method for an OLT (Optical Line Terminal), which can be applied to an OLT. The OLT can be applied to a passive optical network (PON) architecture, where the PON architecture can be applied to fiber-to-the-home / office (FTTH / O) networks. See also... Figure 1 This diagram illustrates an FTTH / O network architecture. The OLT connects to upstream network-side devices (such as switches and routers) and connects to downstream optical network terminals (ONTs) via an optical distribution network (ODN). The ODN includes passive optical splitters for optical power distribution, a backbone fiber connecting the passive optical splitters and the OLT, and branch fibers connecting the passive optical splitters and ONTs. When transmitting downlink signals, the downlink signal sent by the OLT is transmitted to each ONT through the splitter. The ONT selectively receives downlink data belonging to itself from the downlink signal. When transmitting uplink signals, the uplink signals sent by N ONTs are combined into a single optical signal by the splitter and transmitted to the OLT.

[0076] Building upon FTTH / O, to address signal coverage issues (such as wireless LAN (WLAN) signals) in home or office networks, fiber optic cables can be extended further into the room. Optical terminal equipment providing WLAN signals is installed inside the room, thus reducing the distance between the user terminal and the wireless access point (AP) and improving signal quality. This technology is called Fiber to the Room (FTTR).

[0077] like Figure 2As shown, an OLT typically consists of a chassis (not shown in the figure), a main control board, service boards, and optical modules. The main control board and service boards are housed in the chassis, and the optical modules are inserted into the optical interface slots of the main control board and service boards (optical modules are not shown in the figure). The main control board manages the entire OLT device and forwards data from the service boards to the upper-layer network. The service boards are used to send data to the Optical Distribution Network (ODN) via optical modules, and then from the ODN to the user-side ONT. They are also used to receive data from the ONT via optical modules.

[0078] like Figure 3 As shown, an optical module may include a signal processor, an optical transmitting component, and an optical receiving component. The signal processor may include a framer or an optical digital signal processor (oDSP), or a combination of a framer and an oDSP. An optical module can be a unidirectional optical module, meaning it includes either an optical transmitting component or an optical receiving component. An optical module can also be a bidirectional optical module, meaning it includes both an optical transmitting component and an optical receiving component.

[0079] Framer, also known as a service chip or physical layer (PHY) chip, is primarily used for electrical layer encapsulation / decapsulation (or mapping / demapping) in optical transport networks (OTN). Framers encapsulate client signals into OTN frames or decapsulate OTN frames to obtain client signals. For example, a framer can encapsulate client signals into ODUs, encapsulate low-rate ODUs into high-rate ODUs, encapsulate ODUs into FlexOs, or directly encapsulate client signals into FlexOs. Decapsulation is the reverse process of encapsulation.

[0080] The oDSP is used to perform digital signal processing on OTN frames generated by the Framer, or on electrical signals obtained from the optical receiving component. The oDSP is used to perform one or more of the following processing operations: forward error correction (FEC), clock recovery, equalization, sequence detection, and signal decision.

[0081] Optical transmitting module (TOSA): Also known as a transmitter optical subassembly, it converts electrical signals into optical signals. A TOSA may include a light source, a driver chip, and a modulator. The light source can be a semiconductor laser (also known as a laser diode (LD)) or a light emitting diode (LED). The driver chip processes the electrical signals generated by the oDSP and drives the light source to emit modulated optical signals. The modulated optical signals are then transmitted to the fiber optic line via an optical fiber interface.

[0082] Optical receiver assembly (ROSA), also known as a receiver optical subassembly, is used to convert optical signals into electrical signals. ROSA may include photodetectors, amplifiers, etc. The photodetector can be an avalanche photodiode (APD) or a PIN photodiode. The amplifier may include a preamplifier and a post-amplifier. After the optical signal enters from the fiber optic interface, it is converted into an electrical signal by the photodetector, and then amplified by the amplifier to output an amplified electrical signal.

[0083] Currently, after the OLT is deployed, the OLT's main control board, service boards, and optical modules are powered on and all functions are enabled. In order for the ONT to be able to connect and come online at any time, the service boards will periodically send automatic discovery messages through the optical modules to promptly detect ONT connections, thereby enabling the ONT to access the network in a timely manner.

[0084] However, for service boards and optical modules, if there is no ONT connection, the auto-discovery function will be executed continuously, sending auto-discovery messages, which will waste a lot of power.

[0085] In the energy-saving method for OLT provided in this application embodiment, for optical modules that meet the energy-saving conditions, their first functions, including the transmission function, can be controlled to be turned off, so that the optical modules no longer send auto-discovery messages, effectively saving power. When an ONT is connected, the OLT can be notified through a first message that an ONT has connected to an optical module with its transmission function turned off. Then, the OLT can control the designated optical module with its transmission function turned off to restart its transmission function. In this way, the optical module can send an auto-discovery message, enabling the ONT connected to it to successfully go online. It can be seen that the method provided in this application can achieve energy saving of the OLT without affecting the normal online operation of the ONT.

[0086] The first message mentioned above can be sent by the network management device or by the ONT. The first message is used to indicate that an ONT is connected to an optical module with the first function disabled. The implementation of energy-saving methods in the two cases will be explained below.

[0087] The energy-saving method for an OLT provided in this application embodiment will be described below with reference to the accompanying drawings. In this method, the network management device determines whether the ONT is connected to the optical module. If the ONT is connected to the optical module, the network management device sends a message to the OLT to notify the OLT to control the designated optical module that has disabled the first function to start the first function. See also Figure 4 This illustrates a network architecture diagram of a network management device and an OLT. Figure 4 In this embodiment, the network management device and the OLT are connected, and the OLT can communicate with the network management device. Specifically, the OLT can communicate with the network management device through the main control board or the uplink board. In this embodiment, the communication between the OLT and the network management device is not limited. The following describes the energy-saving method provided in this application by taking the communication between the OLT and the network management device through the main control board as an example. The communication between the OLT and the network management device through the uplink board is similar and will not be described in detail here.

[0088] See Figure 5 The diagram illustrates a flowchart of an energy-saving method for an OLT according to an embodiment of this application. This method can be implemented by an OLT, such as... Figure 5 As shown, the processing of this method may include the following steps:

[0089] Step 501: If the first optical module meets the first energy-saving condition, control the first optical module to turn off the first function.

[0090] The first optical module is any optical module included in the OLT, and the first function includes the transmission function.

[0091] In practice, after the OLT is deployed, all or some of the optical modules in the OLT can shut down the first function if the first energy-saving condition is met.

[0092] Taking the first optical module in the OLT as an example, if there is no ONT connection within the first period after the first optical module is powered on, it is determined that the first optical module meets the first energy-saving condition, and then the first optical module is controlled to shut down the first function. The first period can be configured by relevant personnel according to actual needs. This application embodiment does not limit it. For example, the first period can be 24 hours.

[0093] The method for determining whether the first optical module has an ONT connection is as follows:

[0094] Because the service board periodically sends auto-discovery messages to the ONT via the optical module, if the optical module has an ONT connected, the ONT will return a response message after receiving the auto-discovery message. If the optical module does not have an ONT connected, it will not receive a corresponding response message after sending the auto-discovery message. Therefore, if the first optical module does not receive a response message from the ONT within the first period after power-on, it is determined that the first optical module has no ONT connection.

[0095] The aforementioned first function includes a transmitting function, which specifically may include the related functions of the optical transmitting component of the optical module. Besides the transmitting function, the first function may also include receiving functions, etc. As for which functions of the optical module are specifically disabled, this can be configured according to actual needs, and this application embodiment does not limit this. In this application embodiment, it is only necessary to ensure that the first optical module can restart the first function under control when it is disabled. The control method can be that the first function is started by the service board, or the first optical module can start the first function itself, or the first function can be started by the main control board. This application embodiment does not limit the specific control method.

[0096] Furthermore, the entity that determines whether the first optical module meets the first energy-saving condition can be the first optical module itself, the service board connected to the first optical module, or the main control board. Correspondingly, the entity that controls the first optical module to disable the first function can be the first optical module, the service board connected to the first optical module, or the main control board. This application embodiment does not limit the entity that determines whether the first optical module meets the first energy-saving condition and controls the first optical module to disable the first function.

[0097] In one possible implementation, to further save energy in the OLT, the secondary function of the service board can be disabled. The corresponding processing could be as follows:

[0098] If the first service board meets the second energy-saving condition, the second function of the first service board is disabled. The first service board is any service board included in the OLT, and the second function may include automatic discovery of ONTs.

[0099] In practice, after the OLT deployment is completed, all or some of the service boards in the OLT can disable the second function if the second energy-saving condition is met.

[0100] Taking the first service board in the OLT as an example, if there is no ONT connection within the second period after the first service board is powered on, it is determined that the first service board meets the second energy-saving condition, and therefore, the second function of the first service board is turned off. Here, "no ONT connection on the first service board" can mean that none of the optical modules connected to the first service board have an ONT connection. The second period can be configured by relevant personnel according to actual needs. The second period can be the same as or different from the first period. This application embodiment does not limit this; for example, the second period can be 36 hours.

[0101] The aforementioned second function includes automatic discovery of ONTs, and may also include other service functions. As for which specific functions of the service board are to be disabled, they can be configured according to actual needs. This application embodiment does not limit this. In this application embodiment, it is only necessary to ensure that the second function can be restarted under control when the first service board is disabled. The control method can be that the second function is started by the main control board, or the first service board can start the second function on its own. This application embodiment does not limit the specific control method.

[0102] Furthermore, the entity that determines whether the first service board meets the second energy-saving condition can be either the first service board or the main control board. Correspondingly, the entity that controls the first service board to disable the second function can also be either the first service board or the main control board. This application does not limit the entity that determines whether the first service board meets the second energy-saving condition and controls the disabling of the second function.

[0103] In another possible implementation, to further improve energy efficiency in the OLT, the third function of controlling the light ratio on the main control board can also be implemented. The corresponding processing can be as follows:

[0104] If the main control board meets the third energy-saving condition, the third function of the main control board will be disabled. The third function may include functions such as management and monitoring of business boards.

[0105] In practice, after the OLT is deployed, the main control board in the OLT can disable the third function if the third energy-saving condition is met.

[0106] If the main control board determines that there is no ONT connection in the OLT within the third time period after power-on, it determines that the third energy-saving condition is met, and then controls the main control board to shut down the third function. The third time period can be configured by relevant personnel according to actual needs. The second time period can be the same as or different from the first and second time periods. This application embodiment does not limit this. For example, the third time period can be 48 hours.

[0107] The specific functions that the aforementioned third function may include can be configured according to actual needs. This application embodiment does not limit this. In this application embodiment, it is only necessary to ensure that the main control board can receive and process messages from the network management device and can restart the third function when the third function is turned off.

[0108] Step 502: Upon receiving the first message sent by the network management device, control the first optical module to start the first function.

[0109] The first message indicates that an ONT is connected to the first optical module.

[0110] In implementation, after receiving the ONT and connecting it to the ODN, the user can send a registration message to the network management device. There are several ways to send the registration message; some are illustrated below:

[0111] Method 1:

[0112] A QR code can be installed on the ONT casing. Users can scan the QR code with their mobile phones to access the registration page, where they can then fill in their registration information. The specific content of the registration information can be configured according to actual needs; this embodiment does not limit this. For example, the registration information may include the user's personal information, address, and the ONT's media access address (MAC address). After the user completes the registration information, the mobile phone sends a registration message to the network management device, carrying the user's completed registration information.

[0113] Alternatively, users can directly search for the registration page's web address using their mobile phones, computers, or other devices to access the registration page.

[0114] Method 2:

[0115] Users send registration messages to the network management device via SMS, telephone, or other means.

[0116] After receiving the registration message, the network management device obtains the registration information carried in it and compares the registration information with the user's reserved information. If the registration information and the reserved information are consistent, the device sends a first message to the OLT. The first message is used to indicate that an OLT has connected to the first optical module.

[0117] There are several ways to implement the first function of OLT control of the first optical module. Several examples are listed below for illustration:

[0118] Implementation 1:

[0119] Upon receiving the first message, the main control board can control all optical modules in the OLT that have had their first function disabled to restart it. Specifically, the main control board can directly control all optical modules with their first function disabled to restart it, or it can instruct the service boards connected to the optical modules to control all optical modules with their first function disabled to restart it.

[0120] In one possible implementation, when the service boards are also saving energy, after receiving the first message, the main control board first controls all service boards that have turned off the second function to start the second function, and then instructs the service boards to control all connected optical modules that have turned off the first function to restart the first function.

[0121] In another possible implementation, when the main control board is also saving energy, after receiving the first message, the main control board first starts the third function that has been turned off, then controls all service boards that have turned off the second function to start the second function, and then controls all optical modules that have turned off the first function to start the first function.

[0122] Regarding the first implementation described above, for any optical module whose first function has been disabled, if there is no ONT connection within a fourth time period after the optical module is controlled to activate the first function, the optical module can be controlled to disable the first function again. The fourth time period can be configured by relevant personnel according to actual needs; this application embodiment does not limit this. For example, the fourth time period can be 12 hours.

[0123] For any service board that has disabled the second function, if there is no ONT connection within five hours after the service board is controlled to activate the second function, the service board can be controlled to disable the second function again. The fifth duration can be configured by relevant personnel according to actual needs; this application embodiment does not limit this. For example, the fifth duration can be 18 hours.

[0124] Implementation 2:

[0125] The network management device can pre-record the correspondence between the addresses of ONTs installed and the optical modules. The address dimension can be configured according to requirements; this embodiment does not limit this. For example, the address can be at the cell level, meaning one cell corresponds to multiple optical modules. In other words, the correspondence records which optical modules each ONT installed in a cell is connected to. The correspondence can be shown in Table 1 below.

[0126] Table 1

[0127]

[0128]

[0129] After receiving the registration information sent by the user, the network management device first determines the first optical module corresponding to the user's address based on the user's address in the registration information and the correspondence between the address and the optical module. Here, the first optical module can refer to one or more optical modules. Then, the device carries the indication information of the first optical module in the first message. The indication information of the optical module can consist of the serial number of the service board to which the optical module is connected and the serial number of the optical module itself.

[0130] After receiving the first message, the OLT obtains the indication information of the first optical module carried in the first message, and controls the first optical module to start the first function if the first optical module has already turned off the first function.

[0131] In one possible implementation, when the service board also performs energy saving, after receiving the first message, the main control board obtains the indication information of the first optical module carried in the first message. If it is determined that the service board connected to the first optical module has turned off the second function, it controls the service board connected to the first optical module to start the second function, and then instructs the service board to control the first optical module to start the first function.

[0132] In another possible implementation, when the main control board is also saving energy, after receiving the first message, if the main control board has turned off the third function, it will first restart the turned-off third function, and then control the service board connected to the first optical module to start the second function, and then instruct the service board to control the first optical module to start the first function.

[0133] This application also provides an energy-saving method for an OLT. In this method, the transmitting function of optical modules that meet energy-saving conditions is turned off to avoid wasting power. While the transmitting function is turned off, the receiving function of the optical module is turned on. Thus, the optical module can detect whether an ONT is connected by receiving messages sent by the ONT. When a message is received from the ONT, indicating that an ONT has connected, the transmitting function is restarted to send an auto-discovery message to the ONT, enabling the ONT to successfully go online. Therefore, this method can achieve energy saving of the OLT without affecting the normal online operation of the ONT. The method is described below with reference to the accompanying drawings. Figure 6 The processing of this method may include the following steps:

[0134] Step 601: If the first optical module meets the first energy-saving condition, control the first optical module to turn off the first function.

[0135] The first optical module is any optical module included in the OLT, and the first function includes a transmitting function but does not include a receiving function.

[0136] In practice, after the OLT is deployed, all or some of the optical modules in the OLT can shut down the first function if the first energy-saving condition is met.

[0137] Taking the first optical module in the OLT as an example, if there is no ONT connection within the first period after the first optical module is powered on, it is determined that the first optical module meets the first energy-saving condition, and then the first optical module is controlled to shut down the first function. The first function includes the transmitting function but does not include the receiving function; that is, the receiving function remains on. Enabling the receiving function of the first optical module can include the function of the receiving component and the signal detection (SD) function. The first period can be configured by relevant personnel according to actual needs; this application embodiment does not limit this. For example, the first period can be 24 hours.

[0138] The method for determining whether the first optical module has an ONT connection is as follows:

[0139] Because the service board periodically sends auto-discovery messages to the ONT via the optical module, if the optical module has an ONT connected, the ONT will return a response message after receiving the auto-discovery message. If the optical module does not have an ONT connected, it will not receive a corresponding response message after sending the auto-discovery message. Therefore, if the first optical module does not receive a response message from the ONT within the first period after power-on, it is determined that the first optical module has no ONT connection.

[0140] The aforementioned first function includes a transmitting function, which specifically may include the related functions of the optical transmitting component of the optical module. Besides the transmitting function, the first function may also include receiving functions, etc. As for which functions of the optical module are specifically disabled, this can be configured according to actual needs, and this application embodiment does not limit this. In this application embodiment, it is only necessary to ensure that the first optical module can restart the first function under control when it is disabled. The control method can be that the first function is started by the service board, or the first optical module can start the first function itself, or the first function can be started by the main control board. This application embodiment does not limit the specific control method.

[0141] Furthermore, the entity that determines whether the first optical module meets the first energy-saving condition can be the first optical module itself, the service board connected to the first optical module, or the main control board. Correspondingly, the entity that controls the first optical module to disable the first function can be the first optical module, the service board connected to the first optical module, or the main control board. This application embodiment does not limit the entity that determines whether the first optical module meets the first energy-saving condition and controls the first optical module to disable the first function.

[0142] In one possible implementation, to further save energy in the OLT, the secondary function of the service board can be disabled. The corresponding processing could be as follows:

[0143] If the first service board meets the second energy-saving condition, the second function of the first service board is disabled. The first service board is any service board included in the OLT, and the second function may include automatic discovery of ONTs.

[0144] In practice, after the OLT deployment is completed, all or some of the service boards in the OLT can disable the second function if the second energy-saving condition is met.

[0145] Taking the first service board in the OLT as an example, if there is no ONT connection within the second period after the first service board is powered on, it is determined that the first service board meets the second energy-saving condition, and therefore, the second function of the first service board is turned off. Here, "no ONT connection on the first service board" can mean that none of the optical modules connected to the first service board have an ONT connection. The second period can be configured by relevant personnel according to actual needs. The second period can be the same as or different from the first period. This application embodiment does not limit this; for example, the second period can be 36 hours.

[0146] The aforementioned second function includes automatic discovery of ONTs, and may also include other service functions. As for which specific functions of the service board are to be disabled, they can be configured according to actual needs. This application embodiment does not limit this. In this application embodiment, it is only necessary to ensure that the second function can be restarted under control when the first service board is disabled. The control method can be that the second function is started by the main control board, or the first service board can start the second function on its own. This application embodiment does not limit the specific control method.

[0147] Furthermore, the entity that determines whether the first service board meets the second energy-saving condition can be either the first service board or the main control board. Correspondingly, the entity that controls the first service board to disable the second function can also be either the first service board or the main control board. This application does not limit the entity that determines whether the first service board meets the second energy-saving condition and controls the disabling of the second function.

[0148] In another possible implementation, to further save energy in the OLT, the main control board can be controlled to disable the third function. The corresponding processing could be as follows:

[0149] If the main control board meets the third energy-saving condition, the third function of the main control board will be disabled. The third function may include functions such as management and monitoring of business boards.

[0150] In practice, after the OLT is deployed, the main control board in the OLT can disable the third function if the third energy-saving condition is met.

[0151] If the main control board determines that there is no ONT connection in the OLT within the third time period after power-on, it determines that the third energy-saving condition is met, and then controls the main control board to shut down the third function. The third time period can be configured by relevant personnel according to actual needs. The second time period can be the same as or different from the first and second time periods. This application embodiment does not limit this. For example, the third time period can be 48 hours.

[0152] The specific functions that the aforementioned third function may include can be configured according to actual needs. This application embodiment does not limit this. In this application embodiment, it is only necessary to ensure that the main control board can receive and process messages from the business board and can restart the third function when the third function is turned off.

[0153] Step 602: After the first optical module receives the first message sent by the ONT, control the first optical module to start the first function.

[0154] In implementation, after connecting to the ODN link, if the ONT does not receive an auto-discovery message from the OLT within a preset time period, it sends a preset first message to the OLT. The preset time period can be configured according to actual needs; this embodiment does not limit it, but for example, the preset time period can be 60 seconds. At this time, although the first optical module connected to the ONT has its first function disabled, its receiving function is enabled. Therefore, the receiving component of the first optical module can receive optical signals, and upon receiving the optical signal, the SD pin of the first optical module will undergo a level transition. Upon detecting a level transition on the SD pin of the first optical module, the first optical module can be controlled to restart its first function.

[0155] There are several methods to control the first optical module to start its first function. Several examples are listed below for illustration:

[0156] Method 1:

[0157] After detecting a level flip on the SD pin, the first optical module can automatically activate its first function.

[0158] Method 2:

[0159] After detecting a level transition on the SD pin, the first optical module can send a first power-saving message to the service board it is connected to. Specifically, the first optical module can send the first power-saving message to the service board through a communication line. This communication line can be an inter-integrated circuit (I2C) bus or other lines; this embodiment does not limit the specific type of line. After receiving the first power-saving message from the first optical module, the service board can control the first optical module to start a first function.

[0160] In one possible implementation, if the service board also performs energy saving, after the first optical module receives the first message sent by the ONT, and the service board connected to the first optical module has turned off the second function, the service board connected to the first optical module can be controlled to restart the second function.

[0161] In implementation, there are several methods to control the service board connected to the first optical module to start the second function. Several of them are illustrated below:

[0162] Method 1:

[0163] The service board detects the level of the SD pin of the first optical module. After detecting a level flip on the SD pin of the first optical module, if the second function has been turned off, the second function will be restarted.

[0164] Method 2:

[0165] After detecting a level transition on the SD pin, the first optical module can send a first power-saving message to the service board connected to it. Upon receiving the first power-saving message, if the service board has already disabled the second function, it will restart the second function.

[0166] Method 3:

[0167] The service board detects a level transition on the SD pin of the first optical module, or, after receiving the first power-saving message, it can send a second power-saving message to the main control board. Upon receiving the second power-saving message from the service board, the main control board controls the service board to activate the second function.

[0168] In one possible implementation, when the main control board is also saving energy, after the first optical module receives the first message sent by the ONT, and the main control board disables the third function, the main control board is controlled to start the third function.

[0169] In implementation, the service board detects a level transition on the SD pin of the first optical module, or receives a first power-off message from the optical module, and can then send a second power-off message to the main control board. Upon receiving the second power-off message from the service board, if the main control board has disabled the third function, it first restarts the disabled third function, then controls the service board connected to the first optical module to start the second function, and then instructs the service board to control the first optical module to start the first function.

[0170] In the energy-saving method for OLT provided in this application embodiment, for optical modules that meet the energy-saving conditions, their first functions, including the transmission function, can be controlled to be turned off, so that the optical modules no longer send auto-discovery messages, effectively saving power. When an ONT is connected, the OLT can be notified through a first message that an ONT has connected to an optical module with its transmission function turned off. Then, the OLT can control the designated optical module with its transmission function turned off to restart its transmission function. In this way, the optical module can send an auto-discovery message, enabling the ONT connected to it to successfully go online. It can be seen that the method provided in this application can achieve energy saving of the OLT without affecting the normal online operation of the ONT.

[0171] This application also provides an energy-saving device for an OLT, wherein the OLT includes a main control board, at least one service board, and at least one optical module connected to each service board. See [link to relevant documentation]. Figure 7 The device includes:

[0172] The energy-saving module 710 is used to control the first optical module to turn off a first function when the first optical module meets the first energy-saving condition, wherein the first optical module is any optical module included in the optical line terminal, and the first function includes a transmission function.

[0173] The energy-saving module 720 is used to control the first optical module to start the first function upon receiving a first message, wherein the first message is used to indicate that there is an optical network terminal (ONT) connected to the first optical module.

[0174] In one possible implementation, the energy-saving module 720 is used for:

[0175] Upon receiving the first message from the network management device, the first optical module is controlled to activate the first function.

[0176] In one possible implementation, the outer casing of the optical network terminal (ONT) is equipped with a QR code;

[0177] The first message is sent by the network management device to the optical line terminal after receiving the registration message corresponding to the ONT. The registration message is sent by the user terminal to the network management device by scanning the QR code.

[0178] In one possible implementation, the first message carries indication information of the first optical module.

[0179] In one possible implementation, the energy-saving module 720 is used for:

[0180] Control all optical modules in the optical line terminal, including the first optical module, that have had the first function disabled, and activate the first function.

[0181] In one possible implementation, the first function does not include the receiving function of the first optical module, and the energy-saving module 720 is used for:

[0182] When the first optical module receives the first message sent by the ONT, it controls the first optical module to start the first function.

[0183] In one possible implementation, the energy-saving module 720 is used for:

[0184] If a level flip is detected on the SD pin of the first optical module, it is determined that the first optical module has received the first message sent by the ONT through the receiving component;

[0185] Control the first optical module to activate the first function.

[0186] In one possible implementation, the energy-saving module 710 is further used for:

[0187] When the first service board connected to the first optical module meets the second energy-saving condition, the first service board is controlled to shut down the second function, wherein the first service board is any service board included in the optical line terminal, and the second function includes an automatic discovery function.

[0188] In one possible implementation, the energy-saving module 720 is also used for:

[0189] Upon receiving the first message, control the first service board to activate the second function.

[0190] In the energy-saving method for OLT provided in this application embodiment, for optical modules that meet the energy-saving conditions, their first functions, including the transmission function, can be controlled to be turned off, so that the optical modules no longer send auto-discovery messages, effectively saving power. When an ONT is connected, the OLT can be notified through a first message that an ONT has connected to an optical module with its transmission function turned off. Then, the OLT can control the designated optical module with its transmission function turned off to restart its transmission function. In this way, the optical module can send an auto-discovery message, enabling the ONT connected to it to successfully go online. It can be seen that the method provided in this application can achieve energy saving of the OLT without affecting the normal online operation of the ONT.

[0191] It should be noted that the energy-saving device for the OLT provided in the above embodiments is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the OLT's main control board and / or service board can be divided into different functional modules to complete all or part of the functions described above. Furthermore, the energy-saving device for the OLT provided in the above embodiments and the energy-saving method embodiments for the OLT belong to the same concept, and their specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0192] In this application, the terms "first," "second," etc., are used to distinguish identical or similar items that have essentially the same function. It should be understood that there is no logical or temporal dependency between "first," "second," and "nth," nor does it limit the quantity or order of execution. It should also be understood that although the following description uses the terms "first," "second," etc., to describe various elements, these elements should not be limited by the terms. These terms are merely used to distinguish one element from another.

[0193] It should also be understood that, in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0194] In this application, the term "at least one" means one or more, and the term "multiple" means two or more. For example, multiple second devices means two or more second devices. The terms "system" and "network" are often used interchangeably herein.

[0195] It should be understood that the terminology used in the description of the various examples herein is for the purpose of describing particular examples only and is not intended to be limiting. As used in the description of the various examples and the appended claims, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0196] It should also be understood that the term "and / or" as used herein refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects are in an "or" relationship.

[0197] It should also be understood that the terms “if” and “if” can be interpreted as meaning “when” or “upon”, or “in response to determination” or “in response to detection”. Similarly, depending on the context, the phrases “if determination…” or “if detection [the stated condition or event]” can be interpreted as meaning “when determination…”, or “in response to determination…”, or “when detection [the stated condition or event]” or “in response to detection [the stated condition or event]”.

[0198] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this application.

[0199] All information, data, and signals involved in this application are authorized by the user or by all parties, and the collection, use, and processing of such data must comply with the relevant laws, regulations, and standards of the relevant countries and regions.

[0200] This application also provides a computer program product containing instructions. The computer program product may be a software or program product containing instructions, capable of running on an OLT or stored on any available medium. When the computer program product runs on the OLT, it causes the OLT to perform energy-saving methods.

[0201] This application also provides a computer-readable storage medium. The computer-readable storage medium can be any available medium that can be stored in an OLT or a data storage device such as a data center containing one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state drive). The computer-readable storage medium includes instructions that instruct the OLT to perform energy-saving methods of the OLT.

[0202] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this application.

[0203] All information, data, and signals involved in this application are authorized by the user or by all parties, and the collection, use, and processing of such data must comply with the relevant laws, regulations, and standards of the relevant countries and regions.

Claims

1. An energy-saving method for an optical line terminal, characterized in that, The optical line terminal includes at least one service board and at least one optical module connected to each service board; the method includes: When the first optical module meets the first energy-saving condition, the first optical module is controlled to shut down the first function, wherein the first optical module is any optical module included in the optical line terminal, and the first function includes the transmission function; Upon receiving the first message, the system controls the first optical module to activate the first function, wherein the first message is used to indicate that an optical network terminal (ONT) is connected to the first optical module.

2. The method according to claim 1, characterized in that, Upon receiving the first message, controlling the first optical module to activate the first function includes: Upon receiving the first message from the network management device, the first optical module is controlled to activate the first function.

3. The method according to claim 2, characterized in that, The outer casing of the optical network terminal (ONT) has a QR code. The first message is sent by the network management device to the optical line terminal after receiving the registration message corresponding to the ONT. The registration message is sent by the user terminal to the network management device by scanning the QR code.

4. The method according to any one of claims 1-3, characterized in that, The first message carries indication information for the first optical module.

5. The method according to any one of claims 1-3, characterized in that, The control of the first optical module to activate the first function includes: Control all optical modules in the optical line terminal, including the first optical module, that have had the first function disabled, and activate the first function.

6. The method according to claim 1, characterized in that, The first function does not include the receiving function of the first optical module. The step of controlling the first optical module to activate the first function upon receiving the first message includes: When the first optical module receives the first message sent by the ONT, it controls the first optical module to start the first function.

7. The method according to claim 6, characterized in that, The receiving function includes the function of the receiving component and the function of the signal detection SD pin. The step of controlling the first optical module to activate the first function upon receiving the first message includes: If a level flip is detected on the SD pin of the first optical module, it is determined that the first optical module has received the first message sent by the ONT through the receiving component; Control the first optical module to activate the first function.

8. The method according to any one of claims 1-7, characterized in that, The method further includes: When the first service board connected to the first optical module meets the second energy-saving condition, the first service board is controlled to shut down the second function, wherein the first service board is any service board included in the optical line terminal, and the second function includes an automatic discovery function.

9. The method according to claim 8, characterized in that, The method further includes: Upon receiving the first message, control the first service board to activate the second function.

10. An optical line terminal, characterized in that, The optical line terminal is used to perform the energy-saving method as described in any one of claims 1-9.

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