Communication method and related equipment

Abstract

The embodiment of the invention provides a communication method and related equipment, which can realize the purpose that optical network terminal equipment is registered to optical network local side equipment under the condition that an optical transceiver option supported by the optical network terminal equipment is matched with an optical transceiver option supported by the optical network local side equipment. And the reliability of sending the uplink optical signal to the optical network local side equipment by the optical network terminal equipment is improved. The method comprises the following steps: firstly, optical network terminal equipment receives a downlink frame from optical network local side equipment, the downlink frame carries first indication information, and the first indication information is used for indicating the performance of a first optical transceiver included in the optical network local side equipment; and secondly, the optical network terminal equipment sends an uplink frame to the optical network local side equipment, the uplink frame carries an equipment identifier of the optical network terminal equipment and second indication information, and the second indication information is used for indicating a second optical transceiver option.

Description

[0001] This application is a divisional application. The application number of the original application is 202410405156.1, and the original application date is April 4, 2024. The entire content of the original application is incorporated herein by reference. Technical Field

[0002] This application relates to the field of optical communication technologies, and in particular, to a communication method and related devices. Background Art

[0003] In recent years, broadband access technologies have developed rapidly, and passive optical networks (PONs) have been widely popularized and rapidly expanded. With the continuous and sharp increase in the demand for user data, 10 Gigabit (G) PON has entered the stage of large-scale deployment, and the next-generation PON system standards (such as 50G PON and higher-speed PON standards) are also being gradually formulated and improved.

[0004] PON specifically includes optical network terminal equipment and optical network terminal equipment. For the next-generation PON system standards, for the same optical link loss grade (ODN optical path loss class, ODN class), multiple independent optical transceiver options can be defined. For example, for the optical link loss grade N1, the optical transceiver options N1 and N1b are specifically defined. Another example is that for the optical link loss grade C+, the optical transceiver options C+ and C+b are specifically defined. Each optical transceiver option defines performance such as the transmit power of the optical transceiver included in the optical network terminal equipment and the receive sensitivity of the optical transceiver included in the optical network terminal equipment.

[0005] However, in existing solutions, there is a situation where the optical transceiver options supported by the optical transceiver of the optical network terminal equipment do not match the optical transceiver options supported by the optical transceiver of the optical network terminal equipment under the same optical link loss grade, reducing the reliability of the optical signal transmitted from the optical network terminal equipment to the optical network terminal equipment. Summary of the Invention

[0006] Embodiments of this application provide a communication method and related devices, which can achieve the purpose of registering the optical network terminal equipment to the optical network terminal equipment when the optical transceiver options supported by the optical network terminal equipment match the optical transceiver options supported by the optical network terminal equipment, and improve the reliability of the uplink optical signal transmitted from the optical network terminal equipment to the optical network terminal equipment.

[0007] In a first aspect, an embodiment of the present application provides a communication method. The method includes: First, an optical network terminal device receives a downlink frame from an optical network terminal equipment. The downlink frame carries first indication information, and the first indication information is used to indicate a first optical transceiver option, and the first optical transceiver option is used to indicate the performance of the first optical transceiver. Second, the optical network terminal device sends an uplink frame to the optical network terminal equipment. The uplink frame carries the device identifier of the optical network terminal device and second indication information, and the second indication information is used to indicate a second optical transceiver option, and the second optical transceiver option is used to indicate the performance of the second optical transceiver. Optionally, the uplink frame including the second indication information may be an uplink frame used by the optical network terminal device for registration. Based on this negotiation process between the optical network terminal equipment and the optical network terminal device, the optical network terminal equipment can obtain the second optical transceiver option of the optical network terminal device, and the optical network terminal device can also obtain the first optical transceiver option of the optical network terminal equipment, which is convenient for the operation and maintenance of the optical network.

[0008] As shown in this aspect, the optical network terminal device sends an uplink frame including the second indication information to the optical network terminal equipment to implement the negotiation between the second optical transceiver option supported by the optical network terminal device and the first optical transceiver option supported by the optical network terminal equipment, and improve the reliability of the uplink optical signal sent by the optical network terminal device to the optical network terminal equipment.

[0009] Based on the first aspect, in an optional implementation, the first optical transceiver option matches the second optical transceiver option. The matching of the first optical transceiver option and the second optical transceiver option may refer to any of the following examples: Example 1, the first optical transceiver option is the optical transceiver option N1, and the optical transceiver options supported by the second optical transceiver are the optical transceiver option N1 and / or N1b. Example 2, the first optical transceiver option and the optical transceiver options supported by the second optical transceiver are respectively the optical transceiver option N1b. Example 3, the first optical transceiver option is the optical transceiver option C+, and the optical transceiver options supported by the second optical transceiver are the optical transceiver option C+ and / or C+b. Example 4, the first optical transceiver option and the optical transceiver options supported by the second optical transceiver are respectively the optical transceiver option C+b.

[0010] Based on the first aspect, in an optional implementation, when the first optical transceiver option matches the second optical transceiver option, an uplink frame is sent to the optical network terminal equipment.

[0011] As shown in this aspect, when the optical network terminal device determines that the second optical transceiver option supported by the optical network terminal device matches the first optical transceiver option supported by the optical network terminal equipment, the optical network terminal device sends an upstream frame for registration to the optical network terminal equipment, achieving the purpose of registering the optical network terminal device to the optical network terminal equipment, and improving the reliability of the optical network terminal device sending an upstream optical signal to the optical network terminal equipment. For example, when the first optical transceiver option and the second optical transceiver option are in a matching state, the receiving sensitivity of the first optical transceiver (indicated by the first optical transceiver option) can successfully receive the optical power from the second optical transceiver (indicated by the second optical transceiver option). Then, the reliability of the upstream optical signal transmission can be effectively guaranteed.

[0012] Based on the first aspect, in an optional implementation, the optical transceiver option configured by the optical network terminal device is the fifth optical transceiver option, and the first optical transceiver option does not match the fifth optical transceiver option. After the optical network terminal device receives a downstream frame from the optical network terminal equipment, the method further includes: the optical network terminal device changes the fifth optical transceiver option to the second optical transceiver option, and the first optical transceiver option matches the second optical transceiver option. With this implementation, if the first optical transceiver option does not match the fifth optical transceiver option configured by the second optical transceiver, then the optical network terminal device changes the configured fifth optical transceiver option to the second optical transceiver option to ensure that the performance of the first optical transceiver matches the performance of the second optical transceiver, improving the reliability of the upstream optical signal transmission.

[0013] Based on the first aspect, in an optional implementation, the first optical transceiver option does not match the second optical transceiver option. With this implementation, if the first optical transceiver option does not match the second optical transceiver option, then the optical network terminal device attempts to register by sending an upstream frame, improving the registration efficiency.

[0014] Based on the first aspect, in an optional implementation, the upstream frame further carries information indicating that the first optical transceiver option does not match the second optical transceiver option. With this implementation, if the first optical transceiver option does not match the second optical transceiver option, then the optical network terminal device sends information indicating that the first optical transceiver option does not match the second optical transceiver option to the optical network terminal equipment to enable negotiation on whether the optical transceiver options match between the optical network terminal equipment and the optical network terminal device.

[0015] Based on the first aspect, in an alternative implementation, the matching of the first optical transceiver option and the second optical transceiver option means that the first optical transceiver option is the optical transceiver option N1, and the second optical transceiver option is the optical transceiver option N1 and / or the optical transceiver option N1b, or the first optical transceiver option and the second optical transceiver option are respectively the optical transceiver option N1b. By adopting this implementation, it is ensured that the first optical transceiver option and the second optical transceiver option are in a matching state, thereby ensuring that the performance of the first optical transceiver matches that of the second optical transceiver. Then, when transmitting the upstream optical signal, the reliability of the upstream optical signal transmission can be effectively ensured, and moreover, it is convenient for the operation and maintenance of the optical network.

[0016] Based on the first aspect, in an alternative implementation, if the second optical transceiver option is the optical transceiver option N1, the minimum average transmit power mapped by the optical transceiver option N1 is 6.8 decibel-milliwatts (dBm), the maximum average transmit power mapped by the optical transceiver option N1 is 11.8 dBm, and the target parameter mapped by the optical transceiver option N1 is 4.47 dBm, where the target parameter is the transmit optical power calculated by subtracting the transmitter and dispersion eye closure TDEC from the optical modulation amplitude OMA; if the second optical transceiver option is the optical transceiver option N1b, the minimum average transmit power mapped by the optical transceiver option N1b is 7.8 dBm, the maximum average transmit power mapped by the optical transceiver option N1b is 11.8 dBm, and the target parameter mapped by the optical transceiver option N1b is 5.47 dBm. By adopting this implementation, the same link budget parameter can be divided into two different optical transceiver options (such as the optical transceiver options N1 and N1b), and the second optical transceiver option is one of the two optical transceiver options, enabling the optical network terminal device to be applied to a complex optical network.

[0017] Based on the first aspect, in an optional implementation, if the first optical transceiver option is optical transceiver option N1, the sensitivity at the bit error rate reference level mapped by the optical transceiver option N1 is -22.7 dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by the optical transceiver option N1 is -22.53 dBm, and the overload at the bit error rate reference level mapped by the optical transceiver option N1 is -2.2 dBm; if the first optical transceiver option is optical transceiver option N1b, the sensitivity at the bit error rate reference level mapped by the optical transceiver option N1b is -21.7 dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by the optical transceiver option N1b is -21.53 dBm, and the overload at the bit error rate reference level mapped by the first optical transceiver option N1b is -2.2 dBm. By adopting this implementation, two different optical transceiver options (such as optical transceiver option N1 and N1b) can be divided with the same link budget parameters, and the first optical transceiver option is one of the two optical transceiver options, enabling the optical network central office equipment to be applied to complex optical networks.

[0018] Based on the first aspect, in an optional implementation, the matching of the first optical transceiver option and the second optical transceiver option means that the first optical transceiver option is optical transceiver option C+, and the second optical transceiver option is optical transceiver option C+ and / or optical transceiver option C+b, or the first optical transceiver option and the second optical transceiver option are respectively optical transceiver option C+b. By adopting this implementation, it is ensured that the first optical transceiver option and the second optical transceiver option are in a matching state, thereby ensuring that the performance of the first optical transceiver matches that of the second optical transceiver. Then, for the transmission of the uplink optical signal, the reliability of the uplink optical signal transmission can be effectively ensured, and moreover, it is convenient for the operation and maintenance of the optical network.

[0019] Based on the first aspect, in an alternative implementation, if the second optical transceiver option is optical transceiver option C+, the minimum average transmit power mapped by the optical transceiver option C+ is 6.8 dBm, the maximum average transmit power mapped by the optical transceiver option C+ is 11.8 dBm, and the target parameter mapped by the optical transceiver option C+ is 4.47 dBm. Here, the target parameter is the transmitted optical power calculated by subtracting the transmitter and dispersion eye closure (TDEC) from the optical modulation amplitude (OMA). If the second optical transceiver option is optical transceiver option C+b, the minimum average transmit power mapped by the optical transceiver option C+b is 7.8 dBm, the maximum average transmit power mapped by the optical transceiver option C+b is 11.8 dBm, and the target parameter mapped by the optical transceiver option C+b is 5.47 dBm. By adopting this implementation, the same link budget parameters can be divided into two different optical transceiver options (such as optical transceiver options C+ and C+b), and the second optical transceiver option is one of the two optical transceiver options, enabling the optical network terminal device to be applied to a complex optical network.

[0020] Based on the first aspect, in an alternative implementation, if the first optical transceiver option is optical transceiver option C+, the sensitivity at the bit error rate reference level mapped by the optical transceiver option C+ is -25.7 dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by the optical transceiver option C+ is -25.53, and the overload at the bit error rate reference level mapped by the optical transceiver option C+ is -5.2 dBm. If the first optical transceiver option is optical transceiver option C+b, the sensitivity at the bit error rate reference level mapped by the optical transceiver option C+b is -24.7 dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by the optical transceiver option C+b is -24.53 dBm, and the overload at the bit error rate reference level mapped by the optical transceiver option C+b is -5.2 dBm. By adopting this implementation, the same link budget parameters can be divided into two different optical transceiver options (such as optical transceiver options C+ and C+b), and the first optical transceiver option is one of the two optical transceiver options, enabling the optical network terminal equipment to be applied to a complex optical network.

[0021] Based on the first aspect, in an optional implementation, the serial number Serial_Number message included in the uplink frame is used to carry the second indication information. If the value of the second indication information is the first value, it is used to indicate that the second optical transceiver option is optical transceiver option N1 or C+. If the value of the second indication information is the second value, it is used to indicate that the second optical transceiver option is optical transceiver option N1b or C+b. By adopting this implementation, indicating the second optical transceiver option based on the Serial_Number message can ensure that the second optical transceiver option is successfully indicated to the optical network terminal equipment.

[0022] Based on the first aspect, in an optional implementation, the second indication information is the 5th or 6th bit from the high bit to the low bit in the 40th byte of the Serial_Number message. The first value is 0 and the second value is 1. Indicating the second optical transceiver option based on the Serial_Number message can ensure that the second optical transceiver option is successfully indicated to the optical network terminal equipment.

[0023] Based on the first aspect, in an optional implementation, the second indication information is further used to indicate a third optical transceiver option, and the third optical transceiver option is used to indicate the performance of the second optical transceiver. The second optical transceiver option is different from the third optical transceiver option, and the second optical transceiver option and the third optical transceiver option correspond to the same optical link loss level. After the optical network terminal device sends an uplink frame to the optical network terminal equipment, the method further includes: the optical network terminal receives an activation message from the optical network terminal equipment, and the activation message is used to indicate one of the second optical transceiver option and the third optical transceiver option. By adopting this implementation, the optical network terminal equipment supports multiple optical transceiver options under the same link budget parameter, and the optical network terminal equipment also supports multiple optical transceiver options under the same link budget parameter. The optical network terminal equipment can directly indicate the optical transceiver option on which the optical network terminal device works through the activation message, so that the optical network terminal device can clarify which optical transceiver option among the supported multiple optical transceiver options is specifically used for the transmission of the uplink optical signal, ensuring the reliability of the uplink optical signal transmission. Moreover, it reduces the efficiency of configuring the optical transceiver option in which the first optical transceiver works for the optical network terminal equipment and the optical transceiver option in which the second optical transceiver works for the optical network terminal equipment.

[0024] Based on the first aspect, in an alternative implementation, the activation message is an Assign ONU_ID message for allocating an optical network terminal device identifier. The Assign ONU_ID message carries a target bit, and the target bit is the 6th bit from the high order to the low order in the 15th byte of the Assign ONU_ID message. If the value of the target bit is 0, it is used to indicate that the optical transceiver option is N1 or C+; if the value of the target bit is 1, it is used to indicate that the optical transceiver option is N1b or C+b.

[0025] Based on the first aspect, in an alternative implementation, the optical network terminal device is an optical network terminal (ONT) or an optical network unit (ONU), and the optical network terminal equipment at the central office is an optical line terminal (OLT). Alternatively, the optical network terminal equipment at the central office is the master device, and the optical network terminal device is the slave device.

[0026] Based on the first aspect, in an alternative implementation, the device identifier of the optical network terminal device is a serial number.

[0027] In a second aspect, an embodiment of the present application provides a communication method. The method includes: the optical network terminal equipment at the central office sends a downlink frame to the optical network terminal device, and the downlink frame carries first indication information, where the first indication information is used to indicate a first optical transceiver option, and the first optical transceiver option is used to indicate the performance of the first optical transceiver included in the optical network terminal equipment at the central office; the optical network terminal equipment at the central office receives an uplink frame from the optical network terminal device, and the uplink frame carries the device identifier of the optical network terminal device and second indication information, where the second indication information is used to indicate a second optical transceiver option, and the second optical transceiver option is used to indicate the performance of the second optical transceiver included in the optical network terminal device. For the description of the beneficial effects of this aspect, please refer to the first aspect and will not be elaborated here.

[0028] Based on the second aspect, in an alternative implementation, the uplink frame carries second indication information, and the second indication information is used to indicate the second optical transceiver option.

[0029] Based on the second aspect, in an alternative implementation, the optical distribution network class (ODNclass) field included in the downlink frame is used to carry the first indication information. When the value of the first indication information is a third value, it is used to indicate that the first optical transceiver option is N1; when the value of the first indication information is a fourth value, it is used to indicate that the first optical transceiver option is N1b; when the value of the first indication information is a fifth value, it is used to indicate that the first optical transceiver option is C+; when the value of the ODN class field is a sixth value, it is used to indicate that the first optical transceiver option is C+b.

[0030] Based on the second aspect, in an optional implementation, the third value is 000, the fourth value is 101, the fifth value is 100, and the sixth value is 110.

[0031] Based on the second aspect, in an optional implementation, the downlink frame includes a configured capacity burst profile message for carrying the first indication information, and the first indication information is used to indicate that the first optical transceiver option is N1 or N1b, or the first indication information is used to indicate that the first optical transceiver option is C+ or C+b.

[0032] Based on the second aspect, in an optional implementation, when the value of the first indication information is 0, it is used to indicate the optical transceiver option N1 or the optical transceiver option C+, and when the value of the first indication information is 1, it is used to indicate the optical transceiver option N1b or the optical transceiver option C+b. The first indication information is the 4th bit from the high bit to the low bit in the 5th byte of the burst profile message, or the first indication information is the 5th or 6th bit from the high bit to the low bit in the 6th byte of the burst profile message.

[0033] Based on the second aspect, in an optional implementation, the first indication information is further used to indicate a fourth optical transceiver option, and the fourth optical transceiver option is used to indicate the performance of the first optical transceiver. The first optical transceiver option is different from the fourth optical transceiver option, and the first optical transceiver option and the fourth optical transceiver option correspond to the same optical link loss level.

[0034] Based on the second aspect, in an optional implementation, the second indication information is further used to indicate a third optical transceiver option, and the third optical transceiver option is used to indicate the performance of the second optical transceiver. The second optical transceiver option is different from the third optical transceiver option, and the first optical transceiver option and the third optical transceiver option correspond to the same optical link loss level. After the optical network terminal equipment receives the uplink frame from the optical network terminal equipment, the method further includes: the optical network terminal equipment sends an activation message to the optical network terminal equipment, and the activation message is used to indicate one of the second optical transceiver option and the third optical transceiver option.

[0035] Based on the second aspect, in an optional implementation, the activation message includes second indication information. The activation message is an Assign ONU_ID message for assigning an optical network terminal device identifier. The second indication information is the 6th bit from the high order to the low order in the 15th byte of the Assign ONU_ID message. If the value of the second indication information is 0, it is used to indicate that the optical transceiver option is N1 or C+; if the value of the second indication information is 1, it is used to indicate that the optical transceiver option is N1b or C+b.

[0036] In a third aspect, an embodiment of the present application provides a communication device, including: a module for executing any method described in the first aspect above, or a module for executing any method described in the second aspect above.

[0037] In a fourth aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface. The communication interface is used to receive data and transmit it to the processor, or send the data from the processor to another chip. The processor is used to execute any method described in the first aspect above, or any method described in the second aspect above.

[0038] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer instructions are stored. When the computer instructions run on a computer, any method described in the first aspect above, or any method described in the second aspect above is executed.

[0039] In a sixth aspect, an embodiment of the present application provides a communication device, including an optical transceiver and a processor. The optical transceiver is used to realize the transceiver of optical signals, and the processor is used for any method described in the first aspect or the second aspect above. Description of the Drawings

[0040] Figure 1 It is a structural example diagram of an optical network;

[0041] Figure 2 It is another structural example diagram of an optical network;

[0042] Figure 3a It is a flowchart of the steps of the first embodiment of the communication method provided by the present application;

[0043] Figure 3b It is a flowchart of the steps of the first embodiment of the communication method provided by the present application;

[0044] Figure 4 It is an example diagram of the frame structure of a downlink frame provided by the present application;

[0045] Figure 5An exemplary frame structure diagram of an uplink frame provided by this application;

[0046] Figure 6 The flowchart of the steps of the third embodiment of the communication method provided by this application;

[0047] Figure 7 A schematic block diagram of an embodiment of the communication device provided by this application;

[0048] Figure 8 A schematic block diagram of another embodiment of the communication device provided by this application;

[0049] Figure 9 A schematic diagram of an embodiment of a chip system provided by this application. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of this application will be described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0051] Figure 1It is a schematic diagram of a structure of an optical network. The registration method and related devices of the optical network provided by the embodiments of the present application can be applied to various optical networks. For example, the type of the optical network 100 shown in this example is a passive optical network (PON). Then the optical network 100 includes an optical network terminal device 101, an optical distribution network (ODN) 110, and at least one optical network terminal device 102. The optical network terminal device 101 is connected to at least one optical network terminal device 102 through the ODN 110. In this example, the number of optical network terminal devices 102 included in the optical network is not limited. The ODN 110 includes a passive splitter, a backbone optical fiber (Feeder) connected between the optical network terminal device 101 and the passive splitter, and a branch optical fiber (Drop) connected between the optical network terminal device 102 and the passive splitter. Among them, the optical network terminal device 101 sends an optical signal to the optical network terminal device 102 through the ODN, which is called downstream, and the optical network terminal device 102 sends an optical signal to the optical network terminal device 101 through the ODN, which is called upstream. Specifically, when transmitting downstream data, the ODN 110 transmits the downstream data of the optical network terminal device 101 to each optical network terminal device 102 through the splitter. When transmitting upstream data, the ODN 110 combines multiple upstream data from multiple optical network terminal devices 102 into one optical signal by time division multiplexing (TDM) and sends it to the optical network terminal device 101. Each optical network terminal device 102 sends data in sequence according to the order specified by the optical network terminal device 101, so as to avoid conflicts between the optical network terminal devices 102.

[0052] The optical network terminal device 102 shown in this example can be an optical network unit (ONU) or an optical network terminal (ONT), and the optical network terminal device 101 is an optical line terminal (OLT). The optical network terminal device 101 is connected to the upper-layer network-side device (such as a switch, a router, etc.). The optical network terminal device 102 can be connected to the user-side device. For example, the optical network terminal device 102 provides an Ethernet user port or a plain old telephone service (POTS) user port to connect to the user-side device. It should be clear that Figure 1The description of the optical network type shown is an optional example and is not restrictive. For example, the optical network can also be applied to an optical transport network (OTN), in which case both the optical network central office device 101 and the optical network terminal device 102 are OTN devices. If the optical network 100 is applied to a wireless mesh network (Mesh), also known as a multihop network. The Mesh includes multiple transmission devices with Mesh functions. The optical network central office device 101 and the optical network terminal device 102 are any two arbitrarily connected among the multiple transmission devices. The optical network 100 shown in this example can also be applied to a data center network (data1 center network, DCN), a metropolitan area network, an optical access network (OAN), a metropolitan area network (MAN), a synchronous digital hierarchy (SDH), a Gigabit-capable PON (GPON), an Ethernet passive optical network (EPON), an evolved GPON (10-Gigabit-capable symmetric passive optical network, XGS-PON), an Ethernet, or a flexible Ethernet (FlexE), a wavelength division multiplexing (WDM) network, etc., or any combination of one or more of them, without specific limitation. The method shown in this embodiment is exemplified by application to 50G PON.

[0053] Taking the optical network terminal device 102 as an example, the device type of the optical network terminal device 102 is not restricted in this example. As the application scenario of the optical network varies, the device type of the optical network terminal device 102 can also be different. For example, the optical network terminal device 102 can be an optical transmission device, an optical access device, a router, a switch, a wireless base station, a wireless remote access device, a wireless baseband signal processing device, etc., or can also be a computing server (usually simply referred to as a server), a high performance computer (HPC), a storage server, or a memory resource pool, etc. The type of the optical network terminal device 102 is not restricted in this example, as long as the optical network terminal device 102 has an electro-optical conversion function and an optical interface capable of connecting to an optical fiber. For the description of the type of the optical network central office device 101, please refer to the description of the optical network terminal device 102, and no specific elaboration is provided here.

[0054] Take the optical network terminal device as an example. The optical network terminal device 102 includes a device board 111 and one or more optical transceivers 112. Among them, the optical transceiver can also be called an optical-electric conversion module, an optical transceiver module, an optical module, etc. In this example, the type and packaging form of the optical transceiver are not limited. The packaging form of the optical transceiver can be an optical transceiver board (OTB), a near package optics (NPO), an on-board optics (OBO) based on optical input & output (OIO) technology, or a co-package optics (CPO), etc. The optical transceiver described in this application can be a device that combines transmission and reception, a device that only receives optical signals, or a device that only sends optical signals. In this example, the number of device boards 111 included in the optical network terminal device 102 is not limited. The device board 111 is integrated with the optical network terminal device 102, or the device board 111 is an independent pluggable board. In this example, the number of optical transceivers 112 included in the optical network terminal device 102 is not limited. The optical transceiver 112 can be integrated with the device board 111 or can be plugged into the device board 111 of the device board, etc., and is not specifically limited. Specifically, the device board 111 has encapsulated a processor and a connector, and the connector is used to connect the processor and the optical transceiver 112. Among them, the processor can be one or more chips, or one or more integrated circuits. For another example, the processor can be one or more optical digital signal processors (oDSP), digital signal processing (DSP), field-programmable gate array (FPGA), application specific integrated circuit (ASIC), system on chip (SoC), central processor unit (CPU), network processor (NP), microcontroller unit (MCU), programmable logic device (PLD), network card chip, storage interface chip, or other integrated chips, or any combination of the above chips or processing modules, etc., and will not be specifically described here. The processor has a transmission interface, and the transmission interface is connected to the connector. The connector is used to provide an electrical interface, and the electrical interface realizes a pluggable electrical connection with the optical transceiver 112.The optical network central office equipment 101 includes equipment single boards and one or more optical transceivers. For specific descriptions, please refer to the description of the optical network terminal equipment 102, and no further elaboration will be made here.

[0055] Fiber to the home (FTTH) is a transmission mode of optical fiber communication. The access network part in the aforementioned optical network can be implemented by FTTH to achieve a wider coverage of the optical network. In addition, communication transmission modes such as fiber to the office (FTTO) and fiber to the building (FTTB) which are the same or similar can also be the application architectures of the method provided in this application. Figure 1 The example shown is introduced exemplarily based on FTTH.

[0056] Based on FTTH, in order to solve the problem of wireless fidelity (WIFI) coverage in the home network, the optical fiber can be further extended into the rooms of the household. An optical terminal device providing WIFI access is installed inside the room, which reduces the distance between the user terminal and the WIFI access point and improves the signal quality. This application scenario is called fiber to the room (FTTR).

[0057] Figure 2 It is another structural example diagram of the optical network. Specifically, Figure 2 It is a schematic diagram of the system architecture of FTTR. The FTTR network and the FTTH network can be regarded as cascaded PON systems. The OLT in FTTH is deployed in the central office (CO), and the ONU is deployed in the home information box. The main device in FTTR can replace the ONU in FTTH. This main device has similar functions to the OLT in the FTTH scenario in the FTTR scenario, and at the same time, this main device can also have similar functions to the ONU in the FTTH scenario. That is to say, the main device in FTTR is a device that combines the functions of OLT and ONU and can be used as a network device that plays a connecting role between FTTH and FTTR. The slave devices in FTTR can be deployed in each room of the home and are used to connect to the user terminal (station). These slave devices are essentially similar network devices to the ONU in FTTH. The slave devices in FTTR enter each room, and this slave gateway can also have the function of an access point (AP) and can directly establish a WIFI connection with the user terminal. The user terminal can access the slave device and perform data transmission through the WIFI connection established with the slave device.

[0058] It should be understood that multiple slave devices can be deployed in FTTR. Each slave device is connected to the corresponding downlink port on the master device, and the master device can achieve unified management and configuration of all slave devices. It should be noted that the master device can also be referred to as the "master gateway", "master optical network terminal", or "master FTTR device", etc., and the slave device can also be referred to as the "slave gateway", "slave optical network terminal", or "slave FTTR device", etc. The present application does not limit its specific name. Figure 1 The optical network terminal equipment shown can also be the master device in the FTTR architecture. Figure 1 The optical network terminal equipment shown can also be the slave device in the FTTR architecture.

[0059] Combined with the foregoing Figure 2 architecture, in some scenarios, when the slave device in FTTR provides services to the user terminal, the data transmission method for the user terminal to access the slave device may be different from the data transmission methods of the devices in FTTH and FTTR. For example, communication is carried out through optical fibers inside FTTH or FTTR, while communication between the slave device and the terminal can be carried out through a wireless network, which can include but is not limited to WiFi, near field communication (NFC), infrared, Bluetooth, or ZigBee, etc.

[0060] It can be understood that Figure 1 and Figure 2 are only schematic diagrams, and other devices may also be included in this optical network, such as wavelength division devices, optical amplifier devices, more optical network terminal devices, etc., which are not drawn in Figure 1 and Figure 2 Here.

[0061] Next, based on the foregoing optical network architecture, the method flow provided in the embodiments of the present application will be introduced. In the following, taking the optical network terminal equipment as OLT and the optical network terminal equipment as ONU as an example, the method shown in the embodiments of the present application will be described. In the following method embodiments, OLT can be replaced by the components of OLT (such as chips or circuits), and ONU can be replaced by the components of ONU (such as chips or circuits). It should be clear that Figure 2 the master device shown can replace OLT, Figure 2 and the slave device shown can replace ONU to execute the following method flow.

[0062] To facilitate a better understanding of the technical solution of the present application, a brief introduction to the related technologies of the activation mechanism of ONU involved in the technical solution of the present application will be given.

[0063] The activation process of the ONU is divided into three steps: parameter learning, serial number acquisition, and ranging. Specifically, in the parameter learning step, the ONU remains passive and obtains the operating parameters for upstream transmission; in the serial number acquisition step, the OLT discovers the new ONU through the serial number of the new ONU, and then assigns an ONU identifier (ID) to the new ONU. In the ranging step, after receiving the ranging response message from the ONU, the OLT calculates the round-trip delay (RTD) of the ONU based on the transmission time of the ranging request message and the arrival time of the ranging response message, and then calculates the equalization delay (EQD) of the ONU based on the transmission time of the ranging request message, the arrival time of the ranging response message, the response processing time of the ONU, and the system reference equalization delay, and sends it to the ONU. The ONU can be divided into multiple different states during the entire activation process. One possible implementation is to divide it into seven states, namely the initial state (Initial state), also known as the O1 state; the standby state (Standby state), also known as the O2 state; the serial number state (Serial_Number state), also known as the O3 state; the ranging state (Ranging state), also known as the O4 state; the operation state (Operation state), also known as the O5 state; the POPUP state (POPUP state), also known as the O6 state; and the emergency stop state (Emergency Stop state), also known as the O7 state. It should be noted that the activation process of the ONU can also be called the registration process of the ONU. The ONU completes the registration with the OLT by executing each step of the activation process.

[0064] If the transceiver option supported by the optical transceiver included in the OLT does not match the transceiver option supported by the optical transceiver included in the ONU, it may reduce the reliability of the ONU sending upstream data to the OLT. In view of this problem, the embodiment of the present application proposes a communication method that can be applied in the activation process of the ONU to improve the reliability of the ONU sending upstream data to the OLT when the transceiver option supported by the optical transceiver included in the OLT matches the transceiver option supported by the optical transceiver included in the ONU, thereby ensuring the performance of the optical network.

[0065] Figure 3a It is the flowchart of the first embodiment steps of the communication method provided by the present application.

[0066] Step 301, the OLT sends a downstream frame to the ONU.

[0067] The OLT sends a downstream frame to the ONU. The first indication information is carried in the downstream frame, and the first indication information is used to indicate the first optical transceiver option of the OLT. The first optical transceiver option is used to indicate the performance of the first optical transceiver. For example, the first optical transceiver option is used to indicate the minimum average transmit power, the maximum average transmit power, the transmit optical power calculated by subtracting the transmitter and dispersion eye closure (TDEC) from the optical modulation amplitude (OMA) of the optical signal, the self-luminous power of the optical transceiver when there is no input, the maximum time that the optical transceiver is allowed to be in the on state, or the minimum extinction ratio, etc. Specifically, there is no limitation. In this embodiment, the specific type of the first optical transceiver option is not limited, as long as the first optical transceiver option is used to indicate the relevant performance of the first optical transceiver for sending the upstream optical signal.

[0068] Optionally, the OLT sends the downstream frame in a broadcast manner to discover unregistered ONUs. The downstream frame is used to indicate the authorization time, so as to indicate that the ONU to be activated sends an upstream frame to the OLT in the time window corresponding to the authorization time to report the device information of the ONU. Among them, the downstream frame is also used to carry the first indication information, and the first indication information is used to indicate the first optical transceiver option. The first optical transceiver option is the optical transceiver option supported by the first optical transceiver included in the OLT.

[0069] The first optical transceiver option corresponds to a specific optical link loss level. For example, the first optical transceiver option is an option included in the optical link loss level N1 (such as optical transceiver option N1 or N1b), and again, the first optical transceiver option is an option included in the optical link loss level C+ (such as optical transceiver option C+ or C+b).

[0070] The optical link loss level N1 and the optical link loss level C+ are described in combination with Table 1 shown below:

[0071] Table 1

[0072] Optical link loss level N1 C+ Maximum link loss 29 decibels (dB) 32 dB Minimum link loss 14 dB 17 dB

[0073] For example, for the optical link loss level N1, the minimum link loss is 14 dB and the maximum link loss is 29 dB. For the optical link loss level C+, the minimum link loss is 17 dB and the maximum link loss is 32 dB.

[0074] The first indication information carried in the downlink frame described in this embodiment is used to indicate the first optical transceiver option. There can be multiple specific implementation manners for the downlink frame, which are not limited in this application. Several possible implementation manners are provided below.

[0075] Alternative 1

[0076] For the structure of the downlink frame shown in this manner, refer to Figure 4 as shown Figure 4This is an example diagram of the frame structure of a downlink frame provided by this application. The downlink frame 400 includes a physical synchronization block (PSBd) and a physical layer frame payload (PHY frame payload). The PSBd includes a physical synchronization (PSync) field, a superframe counter (SFC) field, and an operation control (OC) structure field. Among them, the PHY frame payload includes an FS header and an FS payload. The FS Header specifically includes a length ender (HLend), a bandwidth map (BWmap) field, and a physical layer operation, administration, and maintenance downstream (PLOAMd) field. The BWmap field includes time slot scheduling information, which is used to indicate the authorization time or time slot information. The ONU reports the sequence number or service data to the OLT according to the indicated authorization time. The OC structure field includes an OC data body field and a header error control (HEC) field. The OC body field includes a payload information table (PIT) field, a passive optical network-identifier (PON-ID) field, a reserved field (Reserved, R), a transmit optical level reference point indicator (c) field, and a transmit optical level (TOL). The PIT field specifically includes an RE flag bit field, an ODN optical path loss class (ODN class) field, a downstream forward error correction (DS FEC) field, a P flag (P) field, and a physical layer link type field.Among them, the ODN class field is used to indicate the optical transceiver option, that is, to identify the nominal optical parameters of the optical transceiver. The ODN class field can be used to carry the first indication information described in this embodiment. The value of the first indication information is used to indicate the first optical transceiver option. When the value of the first indication information is the third value, it is used to indicate that the first optical transceiver option is N1. When the value of the first indication information is the fourth value, it is used to indicate that the first optical transceiver option is N1b. When the value of the first indication information is the fifth value, it is used to indicate that the first optical transceiver option is C+. When the value of the first indication information is the sixth value, it is used to indicate that the first optical transceiver option is C+b. Among the third value, the fourth value, the fifth value, and the sixth value, any two values are different from each other.

[0077] For example, as shown in Table 2, taking the ODN class field including 3 bits as an example:

[0078] Table 2

[0079] Code value Transceiver option 000 N1 001 N2 010 E1 011 E2 100 C+ 101 N1b 110 C+b 111 Reserved

[0080] As shown in Table 2, if the first optical transceiver option of the OLT is N1, the third value taken by the first indication information is 000. If the first optical transceiver option of the OLT is N1b, the fourth value taken by the first indication information is 101. If the first optical transceiver option of the OLT is C+, the fifth value taken by the first indication information is 100. If the first optical transceiver option of the OLT is C+b, the sixth value taken by the first indication information is 110.

[0081] Optional method 2

[0082] The downlink frame shown in this example includes a configuration capability (burst profile) message. The burst profile message carries the first indication information, and this first indication information is used to indicate the first optical transceiver option. The downlink frame also includes an ODN class field (see the corresponding description specifically in Figure 4 ), and the ODN class field is used to indicate the optical link loss level. For example, the ODN class field is used to indicate the optical link loss level N1, and the first indication information carried by the burst profile message is used to indicate that the first optical transceiver option is N1 or N1b. Another example is that the ODN class field is used to indicate the optical link loss level C+, and the first indication information carried by the burst profile message is used to indicate that the first optical transceiver option is C+ or C+b. See the following examples specifically:

[0083] The ODN class field is used to indicate the optical link loss level, and specifically, it can be referred to as shown in Table 3:

[0084] Table 3

[0085] Code value ODN class 000 N1 001 N2 010 E1 011 E2 100 C+ 101-111 Reserved

[0086] The first indication information carried in the burst profile message can be seen in Table 4 as follows:

[0087] Table 4

[0088]

[0089] For example, the 4th bit from the high order to the low order in the 5th byte of the burst profile message (i.e., the bit R in the bit sequence VVVRBBPP) can be used as the first indication information to indicate the first optical transceiver option. Another example is that the 5th bit in the 6th byte of the burst profile message (i.e., the first R in the bit sequence NNMMRRCF) can also be used as the first indication information to indicate the first optical transceiver option. Another example is that the 6th bit in the 6th byte of the burst profile message (i.e., the second R in the bit sequence NNMMRRCF) can also be used as the first indication information for the first optical transceiver option. Among them, when the bit value indicating the first optical transceiver option is 0, it is used to indicate the optical transceiver option N1 or the optical transceiver option C+. When the bit value indicating the first optical transceiver option is 1, it is used to indicate the optical transceiver option N1b or the optical transceiver option C+b. For example, if the OLT wants to indicate the first optical transceiver option N1b to the ONU, then the value of the ODN class field is 000, and the value of the first indication message is 1. The ONU determines the optical link loss level N1 corresponding to the first optical transceiver option according to the ODN class field with the value of 000. Then, according to the first indication message with the value of 1, it determines the corresponding optical transceiver option N1b or C+b. Among the optical transceiver options N1b or C+b, only the optical transceiver option N1b corresponds to the optical link loss level N1 (i.e., only the optical transceiver option N1b is the optical transceiver option under the optical link loss level N1). Then, the ONU determines that the first optical transceiver option is N1b. By analogy, if the OLT needs to indicate the first optical transceiver option N1 to the ONU, since the optical transceiver option N1 corresponds to the optical link loss level N1, then the value of the ODN class field is 000, and the value of the first indication information carried by the burst profile message is 0. If the OLT needs to indicate the first optical transceiver option C+ to the ONU, since the optical transceiver option C+ corresponds to the optical link loss level C+, then the value of the ODN class field is 100, and the value of the first indication information carried by the burst profile message is 0. If the OLT needs to indicate that the first optical transceiver option is C+b to the ONU, since the optical transceiver option C+b corresponds to the optical link loss level C+, then the value of the ODN class field is 100, and the value of the first indication information carried by the burst profile message is 1. Those skilled in the art can understand that the above examples are only one possible implementation manner, and the present application does not limit the specific bit positions and value meanings used to indicate the first optical transceiver option.

[0090] It should be clear that the description of the method for the downlink frame to carry the first indication information and the description of the values of each field in this embodiment are all optional examples and are not limited. As long as the ONU can determine the first optical transceiver option supported by the first optical transceiver according to the first indication information carried in the downlink frame. From the description of the above first indication information, it can be seen that the first optical transceiver options shown in this embodiment are one of N1, N1b, C+, and C+b. The following specifically describes each first optical transceiver option with reference to Table 5.

[0091] Table 5

[0092]

[0093] As can be seen from Table 5, the first optical transceiver option of the first optical transceiver is used to indicate the performance of the first optical transceiver. Then, different optical transceiver options indicate different performances of the first optical transceiver. The first parameter is the sensitivity at the BER reference level. Where BER is the abbreviation of Bit Error Ratio. The second parameter is the OMA sensitivity at the BER reference level. The third parameter is the overload at the BER reference level. As can be seen from Table 5, the first parameter mapped by the first optical transceiver option N1 is -22.7dBm, the first parameter mapped by the first optical transceiver option N1b is -21.7dBm, the second parameter mapped by the first optical transceiver option N1 is -22.53dBm, the second parameter mapped by the first optical transceiver option N1b is -21.53dBm, and the third parameters mapped by the first optical transceiver option N1 and the first optical transceiver option N1b are both -2.2dBm. The first parameter mapped by the first optical transceiver option C+ is -25.7dBm, the first parameter mapped by the first optical transceiver option C+b is -24.7dBm, the second parameters mapped by the first optical transceiver option C+ and the first optical transceiver option C+b are -25.53dBm, and the third parameters mapped by the first optical transceiver option C+ and the first optical transceiver option C+b are both -5.2dBm.

[0094] Step 302: The ONU sends a first uplink frame to the OLT to report the optical transceiver option corresponding to the second optical transceiver of the ONU.

[0095] Optionally, the ONU obtains a second optical transceiver option supported by the second optical transceiver. Here, the second optical transceiver is the optical transceiver included in the ONU. The second optical transceiver option supported by the second optical transceiver shown in this embodiment can be seen in Table 6 as follows:

[0096] Table 6

[0097]

[0098] As can be seen from Table 6, the second optical transceiver options supported by the second optical transceiver are used to indicate the performance of the second optical transceiver. Then, in the case where the second optical transceiver supports different second optical transceiver options, it illustrates different performances of the second optical transceiver. If the second optical transceiver option supported by the second optical transceiver is optical transceiver option N1, the minimum average transmit power mapped by this optical transceiver option N1 is 6.8 dBm, the maximum average transmit power mapped by optical transceiver option N1 is 11.8 dBm, and the target parameter mapped by optical transceiver option N1 is 4.47 dBm. Among them, the target parameter is the transmit optical power calculated by subtracting TDEC from OMA. If the second optical transceiver option supported by the second optical transceiver is optical transceiver option N1b, the minimum average transmit power mapped by this optical transceiver option N1b is 7.8 dBm, the maximum average transmit power mapped by optical transceiver option N1b is 11.8 dBm, and the target parameter mapped by optical transceiver option N1b is 5.47 dBm. If the second optical transceiver option supported by the second optical transceiver is optical transceiver option C+, the minimum average transmit power mapped by this optical transceiver option C+ is 6.8 dBm, the maximum average transmit power mapped by optical transceiver option C+ is 11.8 dBm, and the target parameter mapped by optical transceiver option C+ is 4.47 dBm. If the second optical transceiver option supported by the second optical transceiver is optical transceiver option C+b, the minimum average transmit power mapped by optical transceiver option C+b is 7.8 dBm, the maximum average transmit power mapped by optical transceiver option C+b is 11.8 dBm, and the target parameter mapped by optical transceiver option C+b is 5.47 dBm. In this embodiment, the specific content of the second optical transceiver option is not limited. For example, the maximum TDEC mapped by the second optical transceiver options N1, N1b, C+, and C+b supported by the second optical transceiver is 5 dB. The launch optical power without input to the transmitter mapped by the second optical transceiver options N1, N1b, C+, and C+b supported by the second optical transceiver is lower than -45 dBm. The Maximum Tx enable time mapped by the second optical transceiver options N1, N1b, C+, and C+b supported by the second optical transceiver transmits 6400 Bits within approximately 128.6 ns. The Maximum Tx diable time mapped by the second optical transceiver options N1, N1b, C+, and C+b supported by the second optical transceiver transmits 6400 Bits within approximately 128.6 ns. The Minimum extinction ratio mapped by the second optical transceiver options N1, N1b, C+, and C+b supported by the second optical transceiver is 5 dB.

[0099] The second optical transceiver is the optical transceiver included in the ONU. The ONU obtains the first optical transceiver option supported by the OLT according to the first indication information carried in the downstream frame from the OLT.

[0100] Optionally, the ONU may determine whether the first optical transceiver option matches the second optical transceiver option supported by the second optical transceiver. Among them, the matching of the first optical transceiver option and the second optical transceiver option includes any of the following example cases:

[0101] Example 1, the first optical transceiver option is the optical transceiver option N1, and the second optical transceiver option supported by the second optical transceiver is the optical transceiver option N1 and / or N1b.

[0102] Example 2, the first optical transceiver option and the second optical transceiver option supported by the second optical transceiver are respectively the optical transceiver option N1b.

[0103] Example 3, the first optical transceiver option is the optical transceiver option C+, and the second optical transceiver option supported by the second optical transceiver is the optical transceiver option C+ and / or C+b.

[0104] Example 4, the first optical transceiver option and the second optical transceiver option supported by the second optical transceiver are respectively the optical transceiver option C+b.

[0105] When the ONU determines that the first optical transceiver option matches the second optical transceiver option supported by the second optical transceiver, the ONU sends a first upstream frame to the OLT.

[0106] When the ONU determines that the first optical transceiver option does not match the second optical transceiver option supported by the second optical transceiver, the ONU can choose not to send an upstream frame, or can choose to send an upstream frame and report the second optical transceiver option in the upstream frame to attempt to register with the OLT or attempt to communicate with the OLT for data. Information indicating that the first optical transceiver option does not match the second optical transceiver option can also be carried in the upstream frame, so that the OLT can determine that the optical transceiver option corresponding to the first optical transceiver of the OLT does not match the optical transceiver option corresponding to the second optical transceiver of the ONU. When the ONU does not send an upstream frame to the OLT, the ONU can generate a local alarm. For example, the alarm can be made through the indicator light, display screen, speaker, etc. of the ONU. Another example is that the alarm can be made through the management platform of the ONU. Through this alarm, the operation and maintenance personnel can obtain the event that the first optical transceiver option does not match the second optical transceiver option supported by the second optical transceiver. When the ONU sends an upstream frame to the OLT, in addition to carrying the optical transceiver option corresponding to the second optical transceiver in the upstream frame, the ONU can also indicate to the OLT that the first optical transceiver option does not match the second optical transceiver option through a field in the upstream frame. For example, in the 40th byte of the Serial_Number_ONU message, the bits "1110" are used to indicate that the first optical transceiver option does not match the second optical transceiver option. It should be clear that the description of the message type used by the ONU to indicate to the OLT that the first optical transceiver option does not match the second optical transceiver option, as well as the specific bytes and bits included in the message, in this embodiment are all optional examples and are not limited.

[0107] Optionally, the ONU may also not determine whether the first optical transceiver option matches the second optical transceiver option supported by the second optical transceiver, and directly send a first upstream frame to the OLT to report the optical transceiver option corresponding to the second optical transceiver of the ONU.

[0108] Optionally, the ONU obtains the authorized time indicated by the downstream frame and sends the first upstream frame to the OLT. The first upstream frame is used to request registration with the OLT. Optionally, the first upstream frame also carries second indication information, and the second indication information is used to indicate the second optical transceiver option of the second optical transceiver. The second optical transceiver option is the optical transceiver option supported by the second optical transceiver and is used to indicate the performance of the second optical transceiver of the ONU. It can be understood that the first optical transceiver option matches the second optical transceiver option.

[0109] For the description of the structure of the first upstream frame, please refer to Figure 5 as shown, where Figure 5FIG. 0 is an exemplary frame structure diagram of an uplink frame provided by this application. The first uplink frame 500 shown in this embodiment includes an Upstream FS header. The FS header includes an ONU-ID field, an indication (Ind) field, a hybrid error control (HEC) field, and an Upstream Physical Layer Operations, Administration, and Maintenance (Upstream PLOAM, PLOAMu) field. The PLOAMu field includes at least an ONU Serial Number (Serial_Number_ONU) message. The ONU serial number shown in this embodiment is used as the device identifier of the ONU. In this embodiment, the Serial_Number_ONU message carrying the second indication information is taken as an example. The following describes how the Serial_Number_ONU message carries the second indication information to indicate the second optical transceiver option.

[0110] When the second indication information carried by the Serial_Number_ONU message takes a first value, it is used to indicate that the second optical transceiver option is optical transceiver option N1 or optical transceiver option C+. When the second indication information carried by the Serial_Number takes a second value, it is used to indicate that the second optical transceiver option is optical transceiver option N1b or optical transceiver option C+b.

[0111] The Serial_Number_ONU message can be seen as shown in Table 7:

[0112] Table 7

[0113]

[0114] As shown in the example of Table 7, the 5th bit or the 6th bit from the high bit to the low bit in the 40th byte of the Serial_Number_ONU message can be used as the second indication information to indicate the second optical transceiver option. The first value is 0, and the second value is 1. It can be understood that if the second optical transceiver option of the ONU is N1 or C+, then the value of the second indication information is 0. If the second optical transceiver option of the ONU is N1b or C+b, then the value of the second indication information is 1.

[0115] This embodiment does not limit the way the Serial_Number_ONU message indicates the second optical transceiver option. For example, as shown in Table 8:

[0116] Table 8

[0117]

[0118] In the 39th byte of the Serial_Number_ONU message, the value range of the octet can be modified, so that the idle bits within the value range of the octet indicate the second optical transceiver option.

[0119] For the ONU shown in this embodiment, to achieve the purpose of registering with the OLT, the ONU sends the serial number (SN) of the ONU to the OLT. This embodiment does not limit the way the ONU sends the SN to the OLT. For example, the SN is carried in the Serial_Number_ONU message of the first upstream frame. Another example is that the SN is carried in the physical layer operation of Serial_Number_ONU. Another example is that the SN is carried in the operations, administration and maintenance (OAM) message, etc. Those skilled in the art can understand that the above description of the message type for carrying the second indication information and the way the message carries the second indication information is a possible implementation manner, and this application does not limit the specific bit positions and value meanings for indicating the second optical transceiver option.

[0120] This embodiment does not limit the number of second optical transceiver options supported by the second optical transceiver. If the number of second optical transceiver options supported by the second optical transceiver is one (such as optical transceiver option N1b), then the currently configured optical transceiver option of the second optical transceiver is this second optical transceiver option (such as optical transceiver option N1b). The second optical transceiver of the ONU sends an upstream optical signal to the OLT according to the parameters indicated by the currently configured optical transceiver option (such as optical transceiver option N1b). If the number of second optical transceiver options supported by the second optical transceiver is multiple (such as optical transceiver options N1 and N1b), then the currently configured optical transceiver option of the second optical transceiver is one of the multiple second optical transceiver options (such as optical transceiver option N1). The second optical transceiver of the ONU sends an upstream optical signal to the OLT according to the parameters indicated by the currently configured optical transceiver option (such as optical transceiver option N1). The optical transceiver option corresponding to the second optical transceiver reported by the ONU is used to indicate the currently configured optical transceiver option of the second optical transceiver. Optionally, when the upstream frame sent by the ONU shown in step 302 is the Serial_Number_ONU message for a registration request, the OLT will execute step 303.

[0121] Step 303: The OLT sends a first activation message to the ONU.

[0122] When the OLT receives the SN from the ONU, if the OLT determines that the SN is a new SN, that is, there is no associated ONUID for this SN, or the OLT has not assigned an ONU ID to the ONU corresponding to this SN, the OLT assigns an ONU ID to the ONU and creates a mapping relationship between this SN and the ONUID at the same time.

[0123] The OLT sends a first activation message to the ONU. The first activation message carries activation indication information and the ONU ID. The activation indication information is used to indicate that the OLT has successfully assigned an ONU ID to this ONU. Specifically, after the OLT assigns the ONU ID to the ONU, it sends the ONU ID and the activation indication information through the first activation message. The first activation message also includes this SN. The SN carried in the first activation message is used to indicate that the OLT has successfully assigned the ONU ID to the ONU corresponding to this SN. It should be noted that this application does not limit the first activation message. Optionally, the first activation message may include an Assign ONU_ID message and / or a collision_feedback message. Exemplarily, when the first activation message includes an Assign ONU_ID message, the Assign ONU_ID message carries activation indication information, ONU ID, and SN. Therefore, the ONU can receive the Assign ONU_ID message according to the SN and obtain the corresponding ONU ID assigned by the OLT. The activation indication information may be the 18th byte in the Assign ONU_ID message, that is, the byte name is allocation feedback. Those skilled in the art can understand that the description of the activation message type and the carried fields in this embodiment are all optional examples and are not limited.

[0124] In this embodiment, the OLT measures the distance to the ONU to calculate the RTD of the ONU, and then sends an EQD to the ONU. The specific process of the OLT measuring the distance to the ONU will not be elaborated. After the ranging is completed and the ONU enters state O5, the ONU is authenticated, that is, the ONU can be connected under the PON interface of the OLT and can be managed by the OLT to realize the uplink and downlink data transmission with the OLT. This embodiment takes the successful activation of the ONU as an example. If the ONU authentication fails, it can also be understood that the ONU identity is illegal, that is, the ONU cannot or is not allowed to be connected under the PON interface of the OLT. Then, the OLT does not execute processes such as step 303, so that the OLT will not manage this ONU.

[0125] When the OLT obtains the first optical transceiver option and the second optical transceiver option, the OLT can also determine whether the first optical transceiver option and the second optical transceiver option match. When it is determined that the first optical transceiver option matches the second optical transceiver option, the OLT then registers the ONU. Then, the second optical transceiver option of the ONU that ensures successful activation matches the first optical transceiver option of the OLT, thereby ensuring that the upstream optical signal sent by the ONU can be successfully received by the OLT and ensuring the reliability of the upstream optical signal transmission. Optionally, when it is determined that the first optical transceiver option does not match the second optical transceiver option, the OLT can also continue the ONU registration process to attempt to receive the upstream optical signal from the ONU when the first optical transceiver option and the second optical transceiver option do not match. Optionally, when the OLT obtains the first optical transceiver option and the second optical transceiver option, the OLT may not determine whether the first optical transceiver option and the second optical transceiver option match, but directly register the ONU.

[0126] If the optical network is applied to scenarios such as 50G PON and 200G PON, taking the application to 50G PON as an example, the technical difficulty of 50G PON is relatively high. For 50G PON, for the same optical link loss level, 2 independent transceiver options are defined. For example, optical transceiver options N1 and N1b, and for another example, optical transceiver options C+ and C+b. It should be clear that the descriptions of the optical transceiver options N1, N1b, C+, and C+b shown in this embodiment are all optional examples and can also be applied to other types and other numbers of optical transceiver options, without specific limitations. Even for the same optical link loss level, the optical transceiver performances reflected by different optical transceiver options are different. By using the method shown in this embodiment, during the ONU registration process, the process of mutual negotiation between the first optical transceiver option of the OLT and the second optical transceiver option of the ONU is realized. Then, it can be ensured that the first optical transceiver option and the second optical transceiver option of the ONU are in a matching state, and further ensure that the performance of the first optical transceiver matches the performance of the second optical transceiver. For example, when the first optical transceiver option and the second optical transceiver option are in a matching state, the receiving sensitivity of the first optical transceiver (indicated by the first optical transceiver option) can successfully receive the optical power from the second optical transceiver (indicated by the second optical transceiver option). Then, for the transmission of the upstream optical signal, the reliability of the upstream optical signal transmission can be effectively ensured. Moreover, based on this negotiation process, the OLT can obtain the second optical transceiver option of the ONU, and the ONU can obtain the first optical transceiver option of the OLT, which is convenient for the operation and maintenance of the optical network.

[0127] Figure 3b This is the flowchart of the steps of the second embodiment of the communication method provided by this application. In Figure 3bIn the embodiments shown, the optical transceiver options supported by the ONU can be changed according to the instructions of the OLT. The specific process is as follows:

[0128] Step 311: The OLT sends a downstream frame to the ONU.

[0129] For the description of the execution process of Step 311 shown in this embodiment, please refer to Figure 3a as shown in Step 301, and details are not elaborated here.

[0130] Step 312: The ONU sends a first upstream frame to the OLT to report the optical transceiver option corresponding to the second optical transceiver of the ONU.

[0131] Taking the optical transceiver option corresponding to the second optical transceiver of the ONU in this embodiment as the fifth optical transceiver option as an example, the fifth optical transceiver option is used to indicate the performance of the second optical transceiver. For the specific description of the fifth optical transceiver option shown in this embodiment, please refer to Figure 3a the description of the second optical transceiver option shown, and details are not elaborated here.

[0132] Optionally, the ONU in Step 312 can determine whether the fifth optical transceiver option matches the first optical transceiver option. For the specific description, please refer to Step 302, and details are not elaborated here. Then, in this example, when the ONU determines that the first optical transceiver option matches the fifth optical transceiver option, the ONU sends a first upstream frame to the OLT.

[0133] Optionally, the ONU can also directly send a first upstream frame to the OLT to report the optical transceiver option corresponding to the second optical transceiver of the ONU without determining whether the first optical transceiver option matches the fifth optical transceiver option. Optionally, when the upstream frame sent by the ONU in Step 312 is a Serial_Number_ONU message for a registration request, the OLT will execute Step 313.

[0134] Step 313: The OLT sends a first activation message to the ONU.

[0135] For the description of Step 313 shown in this embodiment, please refer to Figure 3a the corresponding Step 303, and details are not elaborated here.

[0136] Step 314: When the first optical transceiver option does not match the fifth optical transceiver option and the fifth optical transceiver option supports change, the ONU sends a first upstream frame to the OLT.

[0137] For the description of the ONU determining that the first optical transceiver option does not match the fifth optical transceiver option shown in this embodiment, please refer to Figure 3aA description of the mismatch between the corresponding first optical transceiver option and the second optical transceiver option will not be elaborated here. If the ONU determines that the first optical transceiver option does not match the fifth optical transceiver option, then the ONU continues to determine whether the fifth optical transceiver option supports a change. Among them, the change of the fifth optical transceiver option means that the fifth optical transceiver option supported by the second optical transceiver can be changed. For example, if the fifth optical transceiver option is N1, and it can be changed to one of N1b, C+, or C+b for the fifth optical transceiver option supported by the second optical transceiver, then it means that the fifth optical transceiver option supports the change of the optical transceiver option. The fifth optical transceiver option not supporting the change of the optical transceiver option means that the fifth optical transceiver option cannot be changed. For example, the fifth optical transceiver option is N1 and cannot be changed.

[0138] When the ONU determines that the first optical transceiver option does not match the fifth optical transceiver option, the ONU changes the fifth optical transceiver option to the second optical transceiver option. In this embodiment, if the first optical transceiver option does not match the fifth optical transceiver option, and the fifth optical transceiver option supports a change, then the ONU changes the optical transceiver option supported by the second optical transceiver from the fifth optical transceiver option to the second optical transceiver option. Among them, the first optical transceiver option matches the second optical transceiver option. For a description of the match between the first optical transceiver option and the second optical transceiver option, please refer to Figure 3a As shown in the corresponding step 302, it will not be elaborated here. When the ONU changes the optical transceiver option supported by the second optical transceiver from the fifth optical transceiver option to the second optical transceiver option, it sends a first upstream frame to the OLT to report the optical transceiver option corresponding to the second optical transceiver of the ONU (i.e., the changed second optical transceiver option). For a description of the first upstream frame, please refer to Figure 3a As shown in the corresponding step 302, it will not be elaborated here.

[0139] The number of the fifth optical transceiver options supported by the second optical transceiver shown in this embodiment is not limited. If the number of the fifth optical transceiver options supported by the second optical transceiver is one, this fifth optical transceiver option does not match the first optical transceiver option and supports change. The currently configured optical transceiver option of the second optical transceiver is this fifth optical transceiver option. The ONU changes the optical transceiver options supported by the second optical transceiver to the second optical transceiver option. Then, the currently configured optical transceiver option of the second optical transceiver also changes to the second optical transceiver option. The second optical transceiver of the ONU sends an upstream optical signal to the OLT according to the parameters indicated by the currently configured second optical transceiver option. If the number of the fifth optical transceiver options supported by the second optical transceiver is multiple (such as optical transceiver options N1 and N1b), this fifth optical transceiver option does not match the first optical transceiver option and supports change. The ONU changes the optical transceiver options supported by the second optical transceiver to the second optical transceiver option. Then, the second optical transceiver option can also be multiple, and the currently configured optical transceiver option of the second optical transceiver is one of the multiple second optical transceiver options. The second optical transceiver of the ONU sends an upstream optical signal to the OLT according to the parameters indicated by the currently configured optical transceiver option. Optionally, when the upstream frame sent by the ONU shown in step 314 is the Serial_Number_ONU message for registration request, the OLT will execute step 315.

[0140] Step 315: The OLT sends a first activation message to the ONU.

[0141] When the OLT receives the first upstream frame through step 314, it sends a first activation message to the ONU. For specific description, please refer to Figure 3a As shown in the corresponding step 303, details are not elaborated here.

[0142] Step 316: In the case where the first optical transceiver option does not match the fifth optical transceiver option and the fifth optical transceiver option does not support change, the ONU sends a second upstream frame to the OLT.

[0143] In the case where the first optical transceiver option does not match the fifth optical transceiver option, the ONU sends a second upstream frame to the OLT to attempt to register to the OLT. Among them, the second upstream frame reports the optical transceiver option corresponding to the second optical transceiver of the ONU (that is, the fifth optical transceiver option that does not support change). For the description of the ONU sending the second upstream frame, please refer to Figure 3b The description of sending the first upstream frame shown in the corresponding step 312, details are not elaborated here. Optionally, when the upstream frame sent by the ONU shown in step 306 is the Serial_Number_ONU message for registration request, the OLT will execute step 317.

[0144] Step 317: The OLT sends a second activation message to the ONU.

[0145] For the description of step 317, please refer to Figure 3b the description of the first activation message shown in 315 correspondingly, which will not be elaborated here specifically.

[0146] By using the method shown in this embodiment, during the process of ONU registration, the process of mutual negotiation between the first optical transceiver option of the OLT and the fifth optical transceiver option of the ONU is realized. If the first optical transceiver option does not match the fifth optical transceiver option, the ONU can change the fifth optical transceiver option to the second optical transceiver option, and the second optical transceiver option matches the first optical transceiver option, so as to ensure that the performance of the first optical transceiver matches that of the second optical transceiver.

[0147] Figure 6 This is the flowchart of the steps of the third embodiment of the communication method provided by this application. Figure 3a and Figure 3b in the shown embodiment, taking the OLT and the ONU respectively supporting only one optical transceiver option as an example, while Figure 6 in the shown embodiment, the OLT and the ONU respectively support multiple optical transceiver options.

[0148] Step 601: The OLT sends a downstream frame to the ONU.

[0149] To achieve the purpose of registering the ONU to the OLT, the OLT sends the downstream frame in a broadcast manner. This downstream frame is used to indicate the authorized time. For the specific description, please refer to Figure 3a that shown in step 301 correspondingly, which will not be elaborated here specifically. This downstream frame carries first indication information, and the first indication information is used to indicate the first optical transceiver option and the fourth optical transceiver option. For the description of the first optical transceiver option, please refer to Figure 3a the corresponding description, which will not be elaborated here specifically. The fourth optical transceiver option shown in this embodiment is used to indicate the performance of the first optical transceiver, and the first optical transceiver option and the fourth optical transceiver option correspond to the same optical link loss level. For example, the first optical transceiver option and the fourth optical transceiver option correspond to the optical link loss level N1, and among the first optical transceiver option and the fourth optical transceiver option, one is the optical transceiver option N1 and the other is the optical transceiver option N1b. Another example is that the first optical transceiver option and the fourth optical transceiver option correspond to the optical link loss level C+, and among the first optical transceiver option and the fourth optical transceiver option, one is the optical transceiver option C+ and the other is the optical transceiver option C+b. For the description of the first indication information indicating the fourth optical transceiver option, please refer to Figure 3a the description of the first indication information indicating the first optical transceiver option shown in step 301 correspondingly, which will not be elaborated here specifically.

[0150] Step 602: The ONU sends an upstream frame to the OLT to report the optical transceiver options corresponding to the second optical transceiver of the ONU.

[0151] In this embodiment, the ONU supports the second optical transceiver option and the third optical transceiver option. Among them, the second optical transceiver option and the third optical transceiver option are both options supported by the second optical transceiver included in the ONU. For the description of the content of the second optical transceiver option and the third optical transceiver option, please refer to Figure 3a the description of the optical transceiver options supported by the corresponding second optical transceiver, which will not be elaborated here. The second optical transceiver option and the third optical transceiver option shown in this embodiment correspond to the same optical link loss level. For example, the second optical transceiver option and the third optical transceiver option correspond to the optical link loss level N1, and among the second optical transceiver option and the third optical transceiver option, one is the optical transceiver option N1 and the other is the optical transceiver option N1b. Another example is that the second optical transceiver option and the third optical transceiver option correspond to the optical link loss level C+, and among the second optical transceiver option and the third optical transceiver option, one is the optical transceiver option C+ and the other is the optical transceiver option C+b.

[0152] Specifically, the ONU obtains the authorized time indicated by the downstream frame, and the ONU sends the upstream frame to the OLT within the time window corresponding to the authorized time. This upstream frame is used to request registration to the OLT, and in this embodiment, this upstream frame also carries second indication information, which is used to indicate the second optical transceiver option and the third optical transceiver option.

[0153] Optionally, in this embodiment, the ONU may send the upstream frame when at least one of the second optical transceiver option and the third optical transceiver option matches one of the first optical transceiver option and the fourth optical transceiver option. For the description of the matching of two different optical transceiver options, please refer to Figure 3a as shown in the corresponding step 303, which will not be elaborated here.

[0154] Optionally, the ONU may also directly send an upstream frame to the OLT without determining whether the optical transceiver option corresponding to the first optical transceiver matches the optical transceiver option corresponding to the second optical transceiver, to report the optical transceiver options corresponding to the second optical transceiver of the ONU. When the upstream frame sent by the ONU shown in step 602 is a Serial_Number_ONU message for a registration request, the OLT will execute step 603.

[0155] Step 603: The OLT sends an activation message to the ONU.

[0156] When the OLT receives an upstream frame from the ONU, the OLT assigns an ONU ID to the ONU and simultaneously creates a mapping relationship between the SN and the ONU ID. The OLT sends activation indication information and the ONU ID to the ONU, and the activation indication information is used to indicate that the OLT has successfully assigned the ONU ID to the ONU. The activation message shown in this embodiment is also used to indicate the target optical transceiver option, where the target optical transceiver option is one of the second optical transceiver option and the third optical transceiver option. That is, the OLT indicates to the ONU to specifically operate in the target optical transceiver option by sending an activation message for indicating the target optical transceiver option to the ONU.

[0157] For example, if the first optical transceiver of the OLT shown in this embodiment supports options C+ and C+b, the OLT obtains the second optical transceiver support options C+ and C+b of the ONU through the upstream frame. If the OLT determines that the first optical transceiver receives the upstream optical signal based on option C+b, then, to ensure the reliability of the upstream optical signal transmission, the OLT hopes that the target optical transceiver option in which the ONU operates is also C+b, so as to ensure that the optical transceiver option in which the first optical transceiver operates is in a state matching the optical transceiver option in which the second optical transceiver operates.

[0158] The activation message shown in this embodiment may be Assign ONU_ID, and Assign ONU_ID can be seen in Table 9 as follows:

[0159] Table 9

[0160]

[0161] The target bit in the Assign ONU_ID message can be used to indicate the target optical transceiver option. The target bit is the 6th bit counted from the high bit to the low bit in the 15th byte of the Assign ONU_ID message and indicates the target optical transceiver option. For example, if the OLT hopes that the target optical transceiver option in which the ONU operates is N1 or C+, then the value of the target bit T is 0. If the OLT hopes that the target optical transceiver option in which the ONU operates is N1b or C+b, then the value of the target bit T is 1. It should be clear that the description of the OLT indicating the target transceiver option to the ONU in this embodiment is an optional example and is not limited. In other application scenarios, the target optical transceiver option can be indicated through any type of message, field, and any value.

[0162] Step 604, the ONU configures the second optical transceiver option as the target optical transceiver option.

[0163] In this embodiment, when the ONU receives the activation message, it can obtain the target optical transceiver option. For example, the target optical transceiver option is C+b. Then, the ONU can determine that the OLT expects the ONU to operate in the target optical transceiver option C+b, and based on this target optical transceiver option C+b, send an upstream optical signal to the OLT. For this purpose, the ONU configures the second optical transceiver option as the target optical transceiver option C+b, so that the ONU can send an upstream optical signal to the OLT based on the parameters indicated by the target optical transceiver option C+b. For the description of the target optical transceiver option C+b, please refer to Table 6, and details are not elaborated here.

[0164] By using the method shown in this embodiment, the OLT supports multiple optical transceiver options under the same link budget parameter, and the ONU also supports multiple optical transceiver options under the same link budget parameter. The OLT can directly indicate the optical transceiver option in which the ONU operates through the activation message, so that the ONU can clarify which optical transceiver option among the supported multiple optical transceiver options is specifically used for the transmission of the upstream optical signal, ensuring the reliability of the upstream optical signal transmission. Moreover, it reduces the efficiency of configuring the optical transceiver option in which the first optical transceiver of the OLT operates and the optical transceiver option in which the second optical transceiver of the ONU operates.

[0165] Regarding the above method embodiment, it should be noted that:

[0166] (1) The step numbers in the flowcharts described in the embodiments are only an example of the execution process and do not constitute a limitation on the execution order of the steps. In the embodiments of the present application, there is no strict execution order between steps that have no timing dependency relationship with each other. In addition, not all the steps shown in each flowchart are steps that must be executed, and some steps can be added or deleted based on the actual needs on the basis of each flowchart.

[0167] (2) In each embodiment of the present application, if there is no special explanation and logical conflict, the terms and / or descriptions between different embodiments are consistent and can be mutually referred to. The technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0168] (3) Some messages and parameters in the PON system are used in the above embodiments for description. However, in specific implementations, different messages or message names may be used, and the embodiments of the present application do not limit this. In addition, in some of the above embodiments, devices in the existing PON network architecture are mainly used as examples for illustrative purposes (OLT, ONU). It should be understood that the specific form of the devices is not limited in the embodiments of the present application. For example, devices that can achieve the same function in the future are applicable to the embodiments of the present application.

[0169] (4)In each of the above method embodiments, the methods and operations implemented by a device (such as an OLT or an ONU) may also be implemented by components of the device (such as a chip or a circuit), without limitation.

[0170] Above, the methods provided in the embodiments of the present application have been described in detail. Below, the apparatuses and chip systems provided in the embodiments of the present application will be described in detail. It should be understood that the descriptions of the apparatus embodiments correspond to those of the method embodiments. Therefore, for the content not described in detail, reference may be made to the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0171] The above communication method has been mainly introduced from the perspective of the interaction between the OLT and the ONU. It can be understood that in order for the OLT and the ONU to implement the above functions, they include the corresponding hardware structures and / or software modules for executing each function.

[0172] It can be understood that in order to implement the functions in the above embodiments, the OLT and the ONU include the corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should easily realize that, in combination with the units and method steps of the examples described in the embodiments disclosed in the present application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving hardware depends on the specific application scenarios and design constraint conditions of the technical solution.

[0173] Figure 7 FIG. is a schematic block diagram of an embodiment of a communication apparatus provided in the present application. Specifically, the communication apparatus 700 includes a sending module 701, a processing module 702, and a receiving module 703. Among them, the sending module 701 may also be referred to as a transmitter, a sending unit, a sending device, etc. The receiving module 703 may also be referred to as a receiver, a receiving unit, a receiving device, etc. The processing module 702 is used to implement the corresponding processing functions. The sending module 701 and the receiving module 703 may also be referred to as a communication interface or a communication unit.

[0174] Optionally, the communication apparatus 700 further includes a storage unit, which can be used to store instructions and / or data. The processing module 702 can read the instructions and / or data in the storage unit to perform the corresponding processing and control actions.

[0175] For example, the communication apparatus may be an OLT as shown in Figure 1 or may also be a module (such as a chip) applied to the OLT. Another example is that the communication apparatus may be the master device as shown in Figure 2 or may also be a module (such as a chip) applied to the master device. Then, in the Figure 3a corresponding embodiment, the sending module 701 is used to execute step 301 and step 303. The receiving module 703 is used to execute step 302. In the Figure 3bIn the corresponding embodiment, the sending module 701 is configured to execute step 311, step 313, step 315, and step 317. The receiving module 703 is configured to execute step 312, step 314, and step 316. In Figure 6 In the corresponding embodiment, the sending module 701 is configured to execute step 601 and step 603, and the receiving module 703 is configured to execute step 602.

[0176] For another example, the communication device may be an ONU or an ONT as Figure 1 shown, or may also be a module (such as a chip) applied to the ONU or ONT. For another example, the communication device may be a Figure 2 slave device as shown, or may also be a module (such as a chip) applied to the slave device. Then, in Figure 3a the corresponding embodiment, the sending module 701 is configured to execute step 302. The receiving module 703 is configured to execute step 301 and step 303. In Figure 3b the corresponding embodiment, the sending module 701 is configured to execute step 312, step 314, and step 316. The receiving module 703 is configured to execute step 311, step 313, step 315, and step 317. In Figure 6 In the corresponding embodiment, the receiving module 703 is configured to receive the downlink frame in step 601 and receive the activation message in step 603. The sending module 701 is configured to execute step 602. The processing module 702 is configured to execute step 604.

[0177] It should be understood that the specific processes for each module to execute the above corresponding steps have been described in detail in the above method embodiments. For the sake of brevity, they will not be repeated here.

[0178] Optionally, the communication device 700 may be a device including an OLT, or a component configured in the OLT, for example, a chip of the OLT. In this case, the receiving module 703 and the sending module 701 may be interface circuits, pins, etc. Specifically, the interface circuit may include an input circuit and an output circuit. Among them, the receiving module 703 may include the input circuit, the sending module 701 may include the output circuit, and the processing module 702 may include a processing circuit.

[0179] Figure 8 This is a schematic block diagram of another embodiment of the communication device provided by this application. The communication device 800 includes a processor 801 and an optical transceiver 802. The optical transceiver 802 is configured to perform optical-electric conversion to perform data interaction with the processor 801. The optical transceiver 802 is further configured to perform optical signal transmission and reception with another communication device. Optionally, the optical transceiver 802 may be an interface, a bus, a circuit, or a device capable of implementing the transmission and reception function. For the description of the optical transceiver 802, reference may also be made to Figure 1The corresponding description will not be elaborated here. Optionally, the devices in the optical transceiver 802 for implementing the receiving function can be regarded as the receiving module, and the devices in the optical transceiver 802 for implementing the sending function can be regarded as the sending module, that is, the optical transceiver 802 includes a receiver and a transmitter.

[0180] For example, in one embodiment, the processor 801 is configured for other operations or functions of the OLT chip. The optical transceiver 802 is used to implement the information interaction between the communication device 800 and the ONU.

[0181] In another embodiment, the processor 801 is configured for other operations or functions of the ONU chip. The optical transceiver 802 is used to implement the information interaction between the communication device 800 and the OLT.

[0182] The communication device 800 may further include a memory 803 for storing computer programs or instructions and / or data. The memory 803 is coupled to the processor 801, and the processor 801 is used to execute the computer programs or instructions and / or data stored in the memory 803, so that the methods in the above method embodiments are executed. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms for information interaction between devices, units or modules. The processor 801 can cooperate with the memory 803. It should be clear that the memory 803 shown in this embodiment is an optional device.

[0183] Optionally, the communication device 800 may include one or more processors 801, and the memory 803 may be one or more.

[0184] Optionally, the memory 803 may be integrated with the processor 801 or separately provided.

[0185] In the embodiments of the present application, the specific connection medium between the above-mentioned processor 801, optical transceiver 802 and memory 803 is not limited. In the embodiments of the present application Figure 8 it is shown that the processor 801, optical transceiver 802 and memory 803 are connected through a bus 804, and the bus is represented by a thick line in Figure 8 The connection manners between other components are only for illustrative purposes and are not limited thereto. The bus can be divided into an address bus, a data bus, a control bus, etc.

[0186] It should be understood that for the convenience of representation, Figure 8 only one thick line is used to represent it in

[0187] Figure 9Schematic diagram of an embodiment of a chip system provided for this application. The chip system 900 (or can also be referred to as a processing system) includes a logic circuit 910 and an input / output interface 920.

[0188] Among them, the logic circuit 910 can be the processing circuit in the chip system 900. The logic circuit 910 can be coupled to a storage unit and call instructions in the storage unit, enabling the chip system 900 to implement the methods and functions of various embodiments of this application. The input / output interface 920 can be the input / output circuit in the chip system 900, outputting the information processed by the chip system 900, or inputting the data or signaling information to be processed into the chip system 900 for processing.

[0189] Optionally, the logic circuit 910 can be implemented by one or more processors, including the one or more processors or the processing part in the one or more processors.

[0190] Optionally, the input / output interface 920 can include a transceiver circuit, a transceiver, an input / output circuit, or a communication interface.

[0191] As a solution, the chip system 900 is used to implement the operations performed by the OLT or ONU in the above method embodiments.

[0192] Specifically, the logic circuit 910 is used to implement the processing-related operations performed by the OLT or ONU in the above method embodiments; the input / output interface 920 is used to implement the sending and / or receiving-related operations performed by the OLT or ONU in the above method embodiments.

[0193] An embodiment of this application also provides a computer-readable storage medium, on which computer instructions for implementing the methods performed by the OLT or ONU in the above method embodiments are stored.

[0194] For example, when the computer program is executed by a computer, the computer can implement the methods performed by the OLT or ONU in the above method embodiments.

[0195] An embodiment of this application also provides a computer program product, including instructions, which when executed by a computer, implement the methods performed by the OLT or ONU in the above method embodiments.

[0196] An embodiment of this application also provides a PON system, and this communication system includes the ONU and / or OLT in the above embodiments. For example, this system includes Figure 1 the ONU and OLT in. Another example is that this communication system includes Figure 2 the master device and / or slave device shown.

[0197] For the explanations and beneficial effects of the relevant content in any of the above-provided devices, reference may be made to the corresponding method embodiments provided above, which will not be elaborated herein.

[0198] In several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical or other forms.

[0199] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. For example, the computer can be a personal computer, a server, or a network device, etc. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that the computer can access or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD), etc.). For example, the foregoing available media includes, but is not limited to: USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs, etc., all of which can store program codes.

[0200] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

Claims

1. A communication method, characterized in that: The method comprises: An optical network terminal device sends an uplink frame to an optical network central office device, wherein the uplink frame carries a device identification and second indication information of the optical network terminal device, wherein the value of the second indication information includes a first value or a second value, wherein the first value indicates that the second optical transceiver option is N1 or C+, and the second value indicates that the second optical transceiver option of the optical network terminal device is N1b or C+b.

2. The method according to claim 1, characterized in that The first value is 0, and the second value is 1.

3. The method according to claim 1 or 2, characterized in that: The method further comprises: The optical network terminal device receives a downlink frame from the optical network central office device, the downlink frame carrying first indication information, the value of the first indication information including a third value, a fourth value, a fifth value or a sixth value, wherein the third value indicates that the first optical transceiver option is N1, the fourth value indicates that the first optical transceiver option is N1b, the fifth value indicates that the first optical transceiver option is C+, and the sixth value indicates that the first optical transceiver option is C+b.

4. The method according to claim 3, characterized in that The first indication information is carried in the ODN class field of the downlink frame.

5. The method according to claim 3, characterized in that: When the second optical transceiver option matches the first optical transceiver option, the optical network terminal device sends the uplink frame to the optical network central office device.

6. The method according to claim 3, characterized in that The uplink frame also carries information indicating that the second optical transceiver option does not match the first optical transceiver option.

7. The method according to claim 5, characterized in that The matching of the first optical transceiver option and the second optical transceiver option includes that the first optical transceiver option is N1, the second optical transceiver option is N1 and / or N1b, or the first optical transceiver option and the second optical transceiver option are N1b respectively.

8. The method according to claim 1 or 2, characterized in that: If the second optical transceiver option is optical transceiver option N1, the minimum average transmit power mapped by the optical transceiver option N1 is 6.8 decibel milliwatts (dBm), the maximum average transmit power mapped by the optical transceiver option N1 is 11.8 dBm, and the target parameter mapped by the optical transceiver option N1 is 4.47 dBm, wherein the target parameter is the transmit optical power calculated by subtracting the transmitter and dispersion eye closure TDEC from the optical modulation amplitude OMA; If the second optical transceiver option is optical transceiver option N1b, the minimum average transmit power mapped by the optical transceiver option N1b is 7.8 dBm, the maximum average transmit power mapped by the optical transceiver option N1b is 11.8 dBm, and the target parameter mapped by the optical transceiver option N1b is 5.47 dBm.

9. The method according to claim 3, characterized in that: If the first optical transceiver option is optical transceiver option N1, the sensitivity at the bit error rate reference level mapped by the optical transceiver option N1 is -22.7 dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by the optical transceiver option N1 is -22.53 dBm, and the overload at the bit error rate reference level mapped by the optical transceiver option N1 is -2.2 dBm; If the first optical transceiver option is optical transceiver option N1b, the sensitivity at the bit error rate reference level mapped by the optical transceiver option N1b is -21.7dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by the optical transceiver option N1b is -21.53dBm, and the overload at the bit error rate reference level mapped by the first optical transceiver option N1b is -2.2dBm.

10. The method according to claim 5, characterized in that The matching of the first optical transceiver option and the second optical transceiver option includes that the first optical transceiver option is optical transceiver option C+, the second optical transceiver option is the optical transceiver option C+ and / or optical transceiver option C+b, or the first optical transceiver option and the second optical transceiver option are the optical transceiver option C+b, respectively.

11. The method according to claim 1 or 2, characterized in that: If the second optical transceiver option is the optical transceiver option C+, the minimum average transmit power mapped by the optical transceiver option C+ is 6.8 dBm, the maximum average transmit power mapped by the optical transceiver option C+ is 11.8 dBm, and the target parameter mapped by the optical transceiver option C+ is 4.47 dBm, wherein the target parameter is the transmit optical power calculated by subtracting the transmitter and dispersion eye closure TDEC from the optical modulation amplitude OMA; If the second optical transceiver option is optical transceiver option C+b, the minimum average transmit power mapped by the optical transceiver option C+b is 7.8dBm, the maximum average transmit power mapped by the optical transceiver option C+b is 11.8dBm, and the target parameter mapped by the optical transceiver option C+b is 5.47dBm.

12. The method according to claim 3, characterized in that If the first optical transceiver option is optical transceiver option C+, the sensitivity at the bit error rate reference level mapped by the optical transceiver option C+ is -25.7 dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by the optical transceiver option C+ is -25.53, and the overload at the bit error rate reference level mapped by the optical transceiver option C+ is -5.2 dBm; If the first optical transceiver option is optical transceiver option C+b, the sensitivity at the bit error rate reference level mapped by the optical transceiver option C+b is -24.7dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by the optical transceiver option C+b is -24.53dBm, and the overload at the bit error rate reference level mapped by the optical transceiver option C+b is -5.2dBm.

13. The method according to claim 1 or 2, characterized in that: The uplink frame is a serial number optical network unit Serial_Number_ONU message.

14. A communication method, characterized in that: The method comprises: An optical network central office device receives an uplink frame from an optical network terminal device, wherein the uplink frame carries a device identification and second indication information of the optical network terminal device, wherein the value of the second indication information includes a first value or a second value, wherein the first value indicates that the second optical transceiver option is N1 or C+, and the second value indicates that the second optical transceiver option is N1b or C+b.

15. The method according to claim 14, characterized in that The first value is 0, and the second value is 1.

16. The method according to claim 14 or 15, characterized in that The method further comprises: The optical network central office device sends a downlink frame to the optical network terminal device, and the downlink frame carries first indication information. The value of the first indication information includes a third value, a fourth value, a fifth value or a sixth value, wherein the third value indicates that the first optical transceiver option is N1, the fourth value indicates that the first optical transceiver option is N1b, the fifth value indicates that the first optical transceiver option is C+, and the sixth value indicates that the first optical transceiver option is C+b.

17. The method according to claim 16, characterized in that The third value is 000, the fourth value is 101, the fifth value is 100, and the sixth value is 110.

18. The method according to claim 16, characterized in that The optical distribution network class ODN class field of the downlink frame carries the first indication information.

19. The method according to claim 16, characterized in that The uplink frame also carries information indicating that the second optical transceiver option does not match the first optical transceiver option.

20. The method according to claim 14 or 15, characterized in that The uplink frame is a serial number Serial_Number_ONU message.

21. A communication device, characterized in that: The method comprises an optical transceiver and a processor, wherein the optical transceiver is used to realize the reception and transmission of optical signals, and the processor is used to execute the method according to any one of claims 1 to 13, or the processor is used to execute the method according to any one of claims 14 to 20.

22. A communication device, characterized in that: include: A module for executing the method according to any one of claims 1 to 13, or a module for executing the method according to any one of claims 14 to 20.

23. A chip, characterized in that: The chip includes a processor and a communication interface, wherein the communication interface is used to receive data and transmit it to the processor, or to send data from the processor to another chip, and the processor is used to execute the method as described in any one of claims 1 to 13, or the method as described in any one of claims 14 to 20.

24. A communication system, characterized in that: The optical network central office device comprises an optical network terminal device, wherein the optical network central office device is configured to execute the method according to any one of claims 14 to 20, and the optical network terminal device is configured to execute the method according to any one of claims 1 to 13.

Images