A communication method and related device

Abstract

The embodiment of the present application provides a communication method and related equipment, which can realize the purpose of registration of an optical network terminal device to an optical network terminal device in the case that the optical transceiver option supported by the optical network terminal device matches the optical transceiver option supported by the optical network terminal device, and improve the reliability of the optical network terminal device for sending uplink optical signals to the optical network terminal device. The method comprises the following steps: first, the optical network terminal device receives a downlink frame from the optical network terminal device, 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 terminal device. Secondly, the optical network terminal device sends an uplink frame to the optical network terminal device, the uplink frame carries the device identifier of the optical network terminal device 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 original application's application number is 202410405156.1, the original application's original date is 2024-04-04, and the original application's entire content is incorporated by reference in this application. TECHNICAL FIELD

[0002] The present application relates to the field of optical communication technology, and in particular to a communication method and related equipment. BACKGROUND

[0003] In recent years, broadband access technology has developed rapidly, and passive optical networks (PON) have completed large-scale popularization and rapid expansion. With the continuous and rapid increase in user data demand, 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 developed and improved.

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

[0005] However, in existing solutions, there is a case where the optical transceiver option supported by the optical transceiver of the optical network terminal device does not match the optical transceiver option supported by the optical transceiver of the optical network terminal device under the same optical link loss class, which reduces the reliability of the optical network terminal device transmitting optical signals to the optical network terminal device. SUMMARY

[0006] Embodiments of the present application provide a communication method and related equipment, which can achieve the purpose of registering the optical network terminal device to the optical network terminal device in the case that the optical transceiver option supported by the optical network terminal device matches the optical transceiver option supported by the optical network terminal device, and improve the reliability of the optical network terminal device sending uplink optical signals to the optical network terminal device.

[0007] In a first aspect, embodiments of this application provide a communication method, the method comprising: first, an optical network terminal device (OND) receives a downlink frame from an optical network central office device (OND), the downlink frame carrying first indication information, the first indication information indicating a first optical transceiver option, the first optical transceiver option indicating the performance of the first optical transceiver. Second, the OND sends an uplink frame to the OND, the uplink frame carrying a device identifier of the OND and second indication information, the second indication information indicating a second optical transceiver option, the second optical transceiver option indicating the performance of the second optical transceiver. Optionally, the uplink frame containing the second indication information may be an uplink frame used by the OND for registration. Based on this negotiation process, the OND and OND can obtain the second optical transceiver option of the OND, and the OND can also obtain the first optical transceiver option of the OND, facilitating the operation and maintenance of the optical network.

[0008] As described in this aspect, the optical network terminal device sends an uplink frame containing second indication information to the optical network central office device to realize 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 central office device, thereby improving the reliability of the uplink optical signal sent by the optical network terminal device to the optical network central office device.

[0009] Based on the first aspect, in one optional implementation, the first optical transceiver option matches the second optical transceiver option. Matching the first optical transceiver option with the second optical transceiver option can refer to any of the following examples: Example 1, the first optical transceiver option is optical transceiver option N1, and the second optical transceiver supports optical transceiver options N1 and / or N1b. Example 2, the first optical transceiver option and the second optical transceiver supports optical transceiver options are both optical transceiver option N1b. Example 3, the first optical transceiver option is optical transceiver option C+, and the second optical transceiver supports optical transceiver options C+ and / or C+b. Example 4, the first optical transceiver option and the second optical transceiver supports optical transceiver options are both optical transceiver option C+b.

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

[0011] As described in this aspect, when the second optical transceiver option supported by the optical network terminal equipment matches the first optical transceiver option supported by the optical network central office equipment, the optical network terminal equipment sends an uplink frame for registration to the optical network central office equipment. This achieves the purpose of the optical network terminal equipment registering with the optical network central office equipment, improving the reliability of uplink optical signal transmission from the optical network terminal equipment to the optical network central office equipment. For example, when the first and second optical transceiver options are matched, the receiving sensitivity of the first optical transceiver (indicated by the first optical transceiver option) can successfully receive the optical power (indicated by the second optical transceiver option). Therefore, the reliability of uplink optical signal transmission can be effectively guaranteed.

[0012] Based on the first aspect, in one optional implementation, the optical transceiver option configured by the optical network terminal device is the fifth optical transceiver option. The first optical transceiver option does not match the fifth optical transceiver option. After the optical network terminal device receives a downlink frame from the optical network central office equipment, the method further includes: the optical network terminal device changing the fifth optical transceiver option to the second optical transceiver option, where the first optical transceiver option matches the second optical transceiver option. Using this implementation, if the first optical transceiver option does not match the fifth optical transceiver option configured on the second optical transceiver, 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, thereby improving the reliability of uplink optical signal transmission.

[0013] Based on the first aspect, in one optional implementation, the first optical transceiver option and the second optical transceiver option do not match. Using this implementation, if the first optical transceiver option and the second optical transceiver option do not match, the optical network terminal device attempts to register by sending uplink frames, thus improving registration efficiency.

[0014] Based on the first aspect, in an optional implementation, the uplink frame further carries information indicating that the first optical transceiver option and the second optical transceiver option do not match. Using this implementation, if the first optical transceiver option and the second optical transceiver option do not match, the optical network terminal device sends information indicating the mismatch between the first and second optical transceiver options to the optical network central office device, thereby enabling negotiation between the optical network central office device and the optical network terminal device regarding the matching of optical transceiver options.

[0015] Based on the first aspect, in one optional implementation, matching the first optical transceiver option with the second optical transceiver option means that the first optical transceiver option is optical transceiver option N1, and the second optical transceiver option is optical transceiver option N1 and / or optical transceiver option N1b, or that the first optical transceiver option and the second optical transceiver option are both optical transceiver option N1b. This implementation ensures that the first optical transceiver option and the second optical transceiver option are matched, thereby guaranteeing that the performance of the first optical transceiver matches the performance of the second optical transceiver. Therefore, uplink optical signal transmission can be effectively guaranteed in terms of reliability, and it also facilitates the operation and maintenance of the optical network.

[0016] Based on the first aspect, in an optional implementation, if the second optical transceiver option is optical transceiver option N1, the minimum average transmit power mapped by 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, wherein the target parameter is the transmit optical power calculated by subtracting the transmitter and dispersive eye diagram 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 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. This implementation allows for the division of the same link budget parameter into two different optical transceiver options (such as optical transceiver options N1 and N1b), with the second optical transceiver option being one of the two options, enabling optical network terminal equipment to be applied to complex optical networks.

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

[0018] Based on the first aspect, in one optional implementation, matching the first optical transceiver option with 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 that the first optical transceiver option and the second optical transceiver option are both optical transceiver option C+b. This implementation ensures that the first optical transceiver option and the second optical transceiver option are matched, thereby guaranteeing that the performance of the first optical transceiver matches the performance of the second optical transceiver. Therefore, uplink optical signal transmission can be effectively guaranteed in terms of reliability, and it also facilitates the operation and maintenance of the optical network.

[0019] Based on the first aspect, in one optional implementation, if the second optical transceiver option is optical transceiver option C+, the minimum average transmit power mapped by 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, wherein the target parameter is the transmit optical power calculated by subtracting the transmitter and dispersive eye diagram 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 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. This implementation allows for the division of the same link budget parameter into two different optical transceiver options (such as optical transceiver options C+ and C+b), with the second optical transceiver option being one of the two options, enabling optical network terminal equipment to be applied to complex optical networks.

[0020] Based on the first aspect, in one optional implementation, if the first optical transceiver option is optical transceiver option C+, the sensitivity of the bit error rate reference level mapped by optical transceiver option C+ is -25.7 dBm, the sensitivity of the optical modulation amplitude at the bit error rate reference level mapped by optical transceiver option C+ is -25.53 dBm, and the overload at the bit error rate reference level mapped by optical transceiver option C+ is -5.2 dBm; if the first optical transceiver option is optical transceiver option C+b, the sensitivity of the bit error rate reference level mapped by 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 optical transceiver option C+b is -24.53 dBm, and the overload at the bit error rate reference level mapped by optical transceiver option C+b is -5.2 dBm. This implementation allows for the division of the same link budget parameter into two different optical transceiver options (such as optical transceiver options C+ and C+b). The first optical transceiver option is one of the two options, enabling optical network central office equipment to be applied to complex optical networks.

[0021] Based on the first aspect, in one optional implementation, the uplink frame includes a Serial_Number message to carry the second indication information. If the second indication information takes a first value, it indicates that the second optical transceiver option is optical transceiver option N1 or C+; if the second indication information takes a second value, it indicates that the second optical transceiver option is optical transceiver option N1b or C+b. Using this implementation, indicating the second optical transceiver option based on the Serial_Number message ensures successful indication of the second optical transceiver option to the optical network central office equipment.

[0022] Based on the first aspect, in one optional implementation, the second indication information is the 5th or 6th bit from the most significant bit to the least significant bit in the 40th byte of the Serial_Number message, where the first value is 0 and the second value is 1. Indicating the second optical transceiver option based on the Serial_Number message ensures successful indication of the second optical transceiver option to the optical network central office 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. The third optical transceiver option indicates the performance of the second optical transceiver. The second optical transceiver option is different from the third optical transceiver option. The second and third optical transceiver options correspond to the same optical link loss level. After the optical network terminal device sends an uplink frame to the optical network central office device, the method further includes: the optical network terminal receiving an activation message from the optical network central office device. The activation message indicates one of the second and third optical transceiver options. Using this implementation, the optical network central office device supports multiple optical transceiver options under the same link budget parameter, and the optical network terminal device also supports multiple optical transceiver options under the same link budget parameter. The optical network central office equipment can directly indicate the optical transceiver option that the optical network terminal equipment is operating on through the activation message. This allows the optical network terminal equipment to clearly identify which of the multiple supported optical transceiver options is used for uplink optical signal transmission, ensuring the reliability of uplink optical signal transmission. Furthermore, it reduces the efficiency of configuring the optical transceiver option on which the first optical transceiver operates and the optical transceiver option on which the second optical transceiver operates.

[0024] Based on the first aspect, in one optional implementation, the activation message is an Assign ONU_ID message, which carries a target bit. The target bit is the 6th bit from the high-order bit to the low-order bit in the 15th byte of the Assign ONU_ID message. If the target bit is 0, it indicates that the optical transceiver option is N1 or C+. If the target bit is 1, it indicates that the optical transceiver option is N1b or C+b.

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

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

[0027] Secondly, embodiments of this application provide a communication method, the method comprising: an optical network central office device sending a downlink frame to an optical network terminal device, the downlink frame carrying first indication information, the first indication information being used to indicate a first optical transceiver option, the first optical transceiver option being used to indicate the performance of a first optical transceiver included in the optical network central office device; the optical network central office device receiving an uplink frame from the optical network terminal device, the uplink frame carrying a device identifier of the optical network terminal device and second indication information, the second indication information being used to indicate a second optical transceiver option, the second optical transceiver option being used to indicate the performance of a second optical transceiver included in the optical network terminal device. For an explanation of the beneficial effects of this aspect, please refer to the first aspect, which will not be elaborated further.

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

[0029] Based on the second aspect, in an optional implementation, the downlink frame includes an ODNclass field, which carries the first indication information. When the first indication information is a third value, it indicates that the first optical transceiver option is N1; when the first indication information is a fourth value, it indicates that the first optical transceiver option is N1b; when the first indication information is a fifth value, it indicates that the first optical transceiver option is C+; and when the ODN class field is a sixth value, it indicates 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 configuration capability burstprofile message for carrying the first indication information, which indicates that the first optical transceiver option is N1 or N1b, or that the first indication information indicates that the first optical transceiver option is C+ or C+b.

[0032] Based on the second aspect, in an optional implementation, when the first indication information is 0, it is used to indicate optical transceiver option N1 or optical transceiver option C+; when the first indication information is 1, it is used to indicate optical transceiver option N1b or optical transceiver option C+b. The first indication information is the 4th bit from the high-order bits to the low-order bits in the 5th byte of the burst profile message, or the first indication information is the 5th or 6th bit from the high-order bits to the low-order bits 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, the fourth optical transceiver option being used to indicate the performance of the first optical transceiver, the first optical transceiver option being different from the fourth optical transceiver option, and the first optical transceiver option and the fourth optical transceiver option corresponding 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, the third optical transceiver option being used to indicate the performance of the second optical transceiver, the second optical transceiver option being different from the third optical transceiver option, the first optical transceiver option and the third optical transceiver option corresponding to the same optical link loss level, and after the optical network central office equipment receives an uplink frame from the optical network terminal equipment, the method further includes: the optical network central office equipment sending an activation message to the optical network terminal equipment, the activation message being 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, and the second indication information is the 6th bit from the high-order bit to the low-order bit in the 15th byte of the Assign ONU_ID message. If the second indication information is 0, it indicates that the optical transceiver option is N1 or C+. If the second indication information is 1, it indicates that the optical transceiver option is N1b or C+b.

[0036] Thirdly, embodiments of this application provide a communication device, including: a module for performing the method described in any of the first aspects above, or a module for performing the method described in any of the second aspects above.

[0037] Fourthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being used to receive data and transmit it to the processor, or to send data from the processor to another chip, the processor being used to perform the method as described in any of the first aspects above, or the method as described in any of the second aspects above.

[0038] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer instructions that, when executed on a computer, cause the method described in any of the first aspects above, or the method described in any of the second aspects above, to be performed.

[0039] In a sixth aspect, embodiments of this application provide a communication device, including an optical transceiver and a processor, wherein the optical transceiver is used to transmit and receive optical signals, and the processor is used in the method described in any one of the first or second aspects above. Attached Figure Description

[0040] Figure 1 This is an example diagram of an optical network structure;

[0041] Figure 2 This is an example diagram of another optical network structure;

[0042] Figure 3a A flowchart illustrating the steps of a first embodiment of the communication method provided in this application;

[0043] Figure 3b A flowchart illustrating the steps of a first embodiment of the communication method provided in this application;

[0044] Figure 4 An example frame structure diagram of one embodiment of the downlink frame provided in this application;

[0045] Figure 5An example frame structure diagram of one embodiment of the uplink frame provided in this application;

[0046] Figure 6 A flowchart illustrating the steps of a third embodiment of the communication method provided in this application;

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

[0048] Figure 8 Schematic block diagram of another embodiment of the communication device provided in this application;

[0049] Figure 9 This application provides a schematic diagram of one embodiment of a chip system. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0051] Figure 1This is a structural example diagram of an optical network. The registration method and related equipment for the optical network provided in this application embodiment can be applied to various optical networks. For example, the type of optical network 100 shown in this example is a passive optical network (PON). The optical network 100 includes an optical network central office equipment 101, an optical distribution network (ODN) 110, and at least one optical network terminal equipment 102. The optical network central office equipment 101 is connected to at least one optical network terminal equipment 102 through the ODN 110. This example does not limit the number of optical network terminal equipment 102 included in the optical network. The ODN 110 includes a passive splitter, a backbone fiber (Feeder) connecting the optical network central office equipment 101 and the passive splitter, and a branch fiber (Drop) connecting the optical network terminal equipment 102 and the passive splitter. In this configuration, the optical network central office equipment 101 transmits optical signals to the optical network terminal equipment 102 via the ODN (Optical Distribution Network), which is called downlink. The optical network terminal equipment 102 transmits optical signals to the optical network central office equipment 101 via the ODN, which is called uplink. Specifically, when transmitting downlink data, the ODN 110 transmits the downlink data from the optical network central office equipment 101 to each optical network terminal equipment 102 via an optical splitter. When transmitting uplink data, the ODN 110 combines multiple uplink data streams from multiple optical network terminal equipment 102 into a single optical signal using time division multiplexing (TDM) and sends it to the optical network central office equipment 101. Each optical network terminal equipment 102 sends the signals sequentially according to the order specified by the optical network central office equipment 101, thereby avoiding conflicts between the optical network terminal equipment 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 central office device 101 is an optical line terminal (OLT). The optical network central office device 101 connects to upper-layer network-side devices (such as switches, routers, etc.). The optical network terminal device 102 can connect to user-side devices; for example, the optical network terminal device 102 provides Ethernet user ports or plain old telephone service (POTS) user ports to connect to user-side devices. It should be noted that... Figure 1The descriptions of optical network types shown are optional examples and are not limited. For instance, optical networks can also be applied to optical transport networks (OTNs), in which case optical network central office equipment 101 and optical network terminal equipment 102 are both OTN devices. If optical network 100 is applied to a wireless mesh network, it is also called a multihop network. This mesh includes multiple transmission devices with mesh functionality. Optical network central office equipment 101 and optical network terminal equipment 102 are any two of the multiple transmission devices connected together. The optical network 100 shown in this example can also be applied to any one or more combinations of data center networks (DCN), metropolitan area networks (MAN), optical access networks (OAN), synchronous digital hierarchy (SDH), Gigabit-cpable PON (GPON), Ethernet passive optical network (EPON), evolved GPON (10-Gigabit-capable symmetric passive optical network, XGS-PON), Ethernet, flex Ethernet (FlexE), wavelength division multiplexing (WDM) networks, etc., without specific limitations. The method shown in this embodiment is applied to 50G PON as an example.

[0053] Taking optical network terminal device 102 as an example, this example does not limit the device type of optical network terminal device 102. Depending on the application scenario of the optical network, the device type of optical network terminal device 102 may also vary. For example, optical network terminal device 102 can be an optical transmission device, optical access device, router, switch, wireless base station, wireless remote access device, wireless baseband signal processing device, etc., or it can be a computing server (usually referred to as a server), high-performance computer (HPC), storage server, or memory resource pool, etc. This example does not limit the type of optical network terminal device 102, as long as it has electro-optical conversion function and an optical interface capable of connecting to optical fibers. For a description of the type of optical network central office equipment 101, please refer to the description of optical network terminal device 102; details will not be repeated here.

[0054] Taking an 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. The optical transceiver can also be referred to as an optoelectronic conversion module, optical transceiver module, or optical module, etc. This example does not limit the type or packaging form of the optical transceiver. 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 transceiver integrated device, a device only responsible for receiving optical signals, or a device only responsible for transmitting optical signals. This example does not limit the number of device boards 111 included in the optical network terminal device 102. The device boards 111 are integrated with the optical network terminal device 102, or the device boards 111 are independent pluggable boards. This example does not limit the number of optical transceivers 112 included in the optical network terminal device 102. The optical transceivers 112 can be integrated with the device board 111 or pluggable onto the device board 111, etc., without specific limitations. Specifically, the device board 111 encapsulates a processor and a connector, which is used to connect the processor and the optical transceivers 112. The processor can be one or more chips, or one or more integrated circuits. For example, the processor can be one or more optical digital signal processors (oDSPs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), system-on-chips (SoCs), central processing units (CPUs), network processors (NPs), microcontroller units (MCUs), programmable logic devices (PLDs), network interface card chips, storage interface chips, or other integrated chips, or any combination of the above chips or processing modules, etc., without further elaboration. The processor has a transmit interface that connects to a connector. The connector provides an electrical interface that enables a pluggable electrical connection to the optical transceiver 112.The optical network central office equipment 101 includes a single equipment board and one or more optical transceivers. For details, please refer to the description of the optical network terminal equipment 102. Detailed descriptions will not be repeated here.

[0055] Fiber to the home (FTTH) is a fiber optic communication transmission method. The access network portion of the aforementioned optical network can achieve wider coverage through FTTH. Furthermore, fiber to the office (FTTO) and fiber to the building (FTTB) are also proposed as similar or identical communication transmission methods, which could also be the application architecture of the method provided in this application. Figure 1 The example shown is based on FTTH and is presented as an example.

[0056] Building upon FTTH, to address the issue of wireless fidelity (Wi-Fi) coverage in home networks, fiber optic cables can be extended further into residents' rooms. Optical terminal equipment providing Wi-Fi access is installed inside the rooms, thus reducing the distance between the user's terminal and the Wi-Fi access point and improving signal quality. This application scenario is called Fiber to the Room (FTTR).

[0057] Figure 2 This is another example diagram of an optical network structure, specifically... Figure 2 This is a schematic diagram of the FTTR system architecture. The FTTR and FTTH networks can be viewed as cascaded PON systems. In FTTH, the OLT is deployed in the center office (CO), and the ONU is deployed in the home's information box. The master device in FTTR can replace the ONU in FTTH. This master device has similar functions to the OLT in the FTTH scenario, and also similar functions to the ONU in the FTTH scenario. That is to say, the master device in FTTR is a device that combines the functions of OLT and ONU, and can act as a network device connecting FTTH and FTTR. The slave devices in FTTR can be deployed in each room of the home 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 the slave gateway can also function as an access point (AP), allowing direct WiFi connection to the user terminal. The user terminal can connect to the slave device and transmit data through the WiFi connection established with the slave device.

[0058] It should be understood that multiple slave devices can be deployed in an FTTR, with each slave device connected to a corresponding downlink port on the master device. The master device can achieve unified management and configuration of all slave devices. It should be noted that the master device can also be called a "master gateway," "master optical modem," or "master FTTR device," and the slave device can also be called a "slave gateway," "slave optical modem," or "slave FTTR device," etc. This application does not limit their specific names. Figure 1 The optical network central office equipment shown can also be the main equipment in an FTTR architecture. Figure 1 The optical network terminal equipment shown can also be a slave device under the FTTR architecture.

[0059] In combination with the above Figure 2 In some scenarios, when a slave device in FTTR provides services to a user terminal, the data transmission method used by the user terminal to access the slave device may differ from the data transmission method used by devices in FTTH and FTTR. For example, FTTH or FTTR may communicate internally via optical fiber, while the slave device and the terminal may communicate via a wireless network, which may include, but is not limited to, WiFi, near field communication (NFC), infrared, Bluetooth, or ZigBee.

[0060] Understandable, Figure 1 as well as Figure 2 This is just an illustration; the optical network can also include other devices, such as wavelength division multiplexing (WDM) equipment, optical amplifiers, and more optical network terminal equipment. Figure 1 as well as Figure 2 It is not shown in the middle.

[0061] Based on the aforementioned optical network architecture, the method flow provided in the embodiments of this application will be described below. Taking the optical network central office equipment as an OLT and the optical network terminal equipment as an ONU as an example, the method shown in the embodiments of this application will be explained. In the following method embodiments, the OLT can be replaced by its components (e.g., chips or circuits), and the ONU can be replaced by its components (e.g., chips or circuits). It should be noted that... Figure 2 The main device shown can replace the OLT. Figure 2 The slave device shown can replace the ONU to perform the method flow shown below.

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

[0063] The ONU activation process consists of three steps: parameter learning, serial number acquisition, and ranging. Specifically, in the parameter learning step, the ONU remains passive, acquiring the operating parameters used for uplink transmission. In the serial number acquisition step, the OLT discovers the new ONU using its serial number and assigns it an ONU identifier (ID). In the ranging step, after receiving the ONU's ranging response message, the OLT calculates the loop delay (rONUd tripdelay, RTD) of the ONU based on the sending time of the ranging request message and the arrival time of the ranging response message. Then, based on the sending time of the ranging request message, the arrival time of the ranging response message, the ONU's response processing time, and the system baseline equalization delay, the ONU's equalization delay (EQD) is calculated and sent to the ONU. The ONU activation process can be divided into several different states. One possible implementation is to divide it into seven states: Initial state (O1); Standby state (O2); Serial_Number state (O3); Ranging state (O4); Operation state (O5); Popup state (O6); and Emergency Stop state (O7). It should be noted that the ONU activation process can also be called the ONU registration process. The ONU completes its registration with the OLT by executing the various steps of the activation process.

[0064] If the transceiver options supported by the optical transceivers included in the OLT do not match the transceiver options supported by the optical transceivers included in the ONU, the reliability of the ONU sending uplink data to the OLT may be reduced. In view of this problem, embodiments of this application propose a communication method that can be applied in the ONU activation process. When the transceiver options supported by the optical transceivers included in the OLT match the transceiver options supported by the optical transceivers included in the ONU, the reliability of the ONU sending uplink data to the OLT is improved, thereby ensuring the performance of the optical network.

[0065] Figure 3a A flowchart illustrating the steps of a first embodiment of the communication method provided in this application.

[0066] Step 301: The OLT sends a downlink frame to the ONU.

[0067] The OLT sends a downlink frame to the ONU, carrying first indication information. This first indication information indicates the OLT's first optical transceiver option. The first optical transceiver option indicates the performance of the first optical transceiver. For example, it may indicate minimum average transmit power, maximum average transmit power, transmit power calculated by subtracting the transmitter and dispersion eye closure (TDEC) from the optical signal's modulation amplitude (OMA), the transceiver's self-emitting power when there is no input, the maximum allowed time for the transceiver to be on, or the minimum extinction ratio, etc. Specific details are not limited. This embodiment does not limit the specific type of the first optical transceiver option, as long as it indicates the performance of the first optical transceiver for transmitting uplink optical signals.

[0068] Optionally, the OLT broadcasts the downlink frame to discover unregistered ONUs. This downlink frame indicates an authorization time, instructing the ONU to be activated to send an uplink frame to the OLT within the corresponding time window, reporting the ONU's device information. The downlink frame also carries first indication information, which indicates a first optical transceiver option. The first optical transceiver option is an optical transceiver option supported by a 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 optical link loss level N1 (e.g., optical transceiver option N1 or N1b), or the first optical transceiver option is an option included in optical link loss level C+ (e.g., optical transceiver option C+ or C+b).

[0070] Table 1 illustrates the optical link loss level N1 and optical link loss level C+:

[0071] Table 1

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

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

[0074] The first indication information carried in the downlink frame described in this embodiment is used to indicate the first optical transceiver option. There are many ways to implement the downlink frame, and this application does not limit it. Several possible implementation methods are provided below.

[0075] Option 1

[0076] The structure of the downlink frame shown in this method can be found in [reference]. Figure 4 As shown, Figure 4This is an example diagram of the frame structure of an embodiment of the downlink frame provided in 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. The PHY frame payload includes an FS frame header and an FS payload. The FS header specifically includes a length end marker (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 indicates the grant time or time slot information. The ONU reports the sequence number or service data to the OLT according to the indicated grant time. The OC structure field includes an OC body field and a header error control (HEC) field. The OC body fields include the payload information table (PIT) field, the passive optical network-identifier (PON-ID) field, the reserved (R) field, the transmit optical level reference point indicator (C) field, and the transmit optical level (TOL) field. The PIT fields specifically include the RE flag field, the ODN optical path loss class (ODN class) field, the downstream forward error correction (DS FEC) field, the P flag (P) field, and the physical layer link type field.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 first indication information is a third value, it indicates that the first optical transceiver option is N1; when the first indication information is a fourth value, it indicates that the first optical transceiver option is N1b; when the first indication information is a fifth value, it indicates that the first optical transceiver option is C+; when the first indication information is a sixth value, it indicates that the first optical transceiver option is C+b. Any two of the third, fourth, fifth, and sixth values ​​are different from each other.

[0077] For example, see Table 2, taking an ODN class field that includes 3 bits as an example:

[0078] Table 2

[0079] Code value Optical 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, then the third value of the first indication information is 000. If the first optical transceiver option of the OLT is N1b, then the fourth value of the first indication information is 101. If the first optical transceiver option of the OLT is C+, then the fifth value of the first indication information is 100. If the first optical transceiver option of the OLT is C+b, then the sixth value of the first indication information is 110.

[0081] Option 2

[0082] The downlink frame shown in this example includes a burst profile message carrying first indication information, which indicates a first optical transceiver option. The downlink frame also includes an ODN class field (see details). Figure 4 (Corresponding explanation), the ODN class field is used to indicate the optical link loss level. For example, if the ODN class field indicates optical link loss level N1, the first indication information carried in the burst profile message indicates that the first optical transceiver option is N1 or N1b. As another example, if the ODN class field indicates optical link loss level C+, the first indication information carried in the burst profile message indicates that the first optical transceiver option is C+ or C+b. See the following examples for details:

[0083] The ODN class field is used to indicate the optical link loss level, 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 by the burst profile message can be seen in Table 4:

[0087] Table 4

[0088]

[0089] For example, the fourth bit from the most significant bit to the least significant bit in the fifth byte of the burst profile message (i.e., bit R in the bit sequence VVVRBBPP) can be used as the first indication information to indicate the first optical transceiver option. Alternatively, the fifth bit of the sixth 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. Furthermore, the sixth bit of the sixth 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. Wherein, when the bit indicating the first optical transceiver option is 0, it indicates optical transceiver option N1 or optical transceiver option C+; when the bit indicating the first optical transceiver option is 1, it indicates optical transceiver option N1b or optical transceiver option C+b. For example, if the OLT wants to indicate the first optical transceiver option N1b to the ONU, then the ODN class field value is 000, and the first indication message value is 1. The ONU determines the optical link loss level N1 corresponding to the first optical transceiver option based on the ODN class field value of 000. Then, based on the first indication message value of 1, it determines the corresponding optical transceiver option N1b or C+b. Of the optical transceiver options N1b and C+b, only optical transceiver option N1b corresponds to optical link loss level N1 (i.e., only optical transceiver option N1b is an optical transceiver option under optical link loss level N1), so the ONU determines the first optical transceiver option as N1b. Similarly, if the OLT needs to indicate the first optical transceiver option N1 to the ONU, since optical transceiver option N1 corresponds to optical link loss level N1, then the ODN class field value is 000, and the first indication information carried in the burst profile message is 0. If the OLT needs to indicate the first optical transceiver option C+ to the ONU, since optical transceiver option C+ corresponds to optical link loss level C+, then the value of the ODN class field is 100, and the value of the first indication information carried in the burst profile message is 0. If the OLT needs to indicate the first optical transceiver option C+b to the ONU, since optical transceiver option C+b corresponds to optical link loss level C+, then the value of the ODN class field is 100, and the value of the first indication information carried in the burst profile message is 1. Those skilled in the art will understand that the above examples are merely one possible implementation, and this application does not limit the specific bits and values ​​used to indicate the first optical transceiver option.

[0090] It should be clarified that the description of the method of carrying the first indication information in the downlink frame and the description of the values ​​of each field in this embodiment are optional examples and are not limited. As long as the ONU can determine the first optical transceiver option supported by the first optical transceiver based on the first indication information carried in the downlink frame, it is acceptable. As can be seen from the above description of the first indication information, the first optical transceiver option shown in this embodiment is one of N1, N1b, C+, and C+b. The following describes each first optical transceiver option in detail with reference to Table 5.

[0091] Table 5

[0092]

[0093] As shown in Table 5, the first optical transceiver options of the first optical transceiver indicate its performance. Different options indicate different performance characteristics of the first optical transceiver. The first parameter is the sensitivity at the bit error rate (BER) reference level. BER is an abbreviation for Bit Error Ratio. The second parameter is the optical modulation amplitude (OMA) sensitivity at the BER reference level. The third parameter is the overload at the BER reference level. As shown in Table 5, the first parameter mapped to the first optical transceiver option N1 is -22.7 dBm, the first parameter mapped to the first optical transceiver option N1b is -21.7 dBm, the second parameter mapped to the first optical transceiver option N1 is -22.53 dBm, the second parameter mapped to the first optical transceiver option N1b is -21.53 dBm, and the third parameter mapped to both the first optical transceiver option N1 and the first optical transceiver option N1b is -2.2 dBm. Similarly, the first parameter mapped to the first optical transceiver option C+ is -25.7 dBm, the first parameter mapped to the first optical transceiver option C+b is -24.7 dBm, the second parameter mapped to both the first optical transceiver option C+ and the first optical transceiver option C+b is -25.53 dBm, and the third parameter mapped to both the first optical transceiver option C+ and the first optical transceiver option C+b is -5.2 dBm.

[0094] Step 302: The ONU sends the first uplink frame to the OLT, reporting the optical transceiver options 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. The second optical transceiver is an optical transceiver included in the ONU. The second optical transceiver options supported by the second optical transceiver shown in this embodiment are listed in Table 6.

[0096] Table 6

[0097]

[0098] As shown in Table 6, the second optical transceiver options supported by the second optical transceiver indicate its performance. Therefore, different second optical transceiver options indicate different performance characteristics of the second optical transceiver. For example, if the second optical transceiver supports option N1, the minimum average transmit power mapped to option N1 is 6.8 dBm, the maximum average transmit power mapped to option N1 is 11.8 dBm, and the target parameter mapped to option N1 is 4.47 dBm. The target parameter is the transmit optical power calculated by subtracting TDEC from OMA. If the second optical transceiver supports the second optical transceiver option N1b, the minimum average transmit power mapped by this option is 7.8 dBm, the maximum average transmit power mapped by this option is 11.8 dBm, and the target parameter mapped by this option is 5.47 dBm. If the second optical transceiver supports the second optical transceiver option C+, the minimum average transmit power mapped by this option is 6.8 dBm, the maximum average transmit power mapped by this option is 11.8 dBm, and the target parameter mapped by this option is 4.47 dBm. If the second optical transceiver supports the second optical transceiver option C+b, the minimum average transmit power mapped to C+b is 7.8 dBm, the maximum average transmit power mapped to C+b is 11.8 dBm, and the target parameter mapped to C+b is 5.47 dBm. This embodiment does not limit the specific content of the second optical transceiver option. For example, the maximum TDEC mapped to 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 to the second optical transceiver options N1, N1b, C+, and C+b supported by the second optical transceiver is below -45 dBm. The maximum Tx enable time mapped to 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 for the second optical transceiver options N1, N1b, C+, and C+b mappings supported by the second optical transceiver is approximately 128.6 ns, transmitting 6400 bits. The minimum extinction ratio for the second optical transceiver options N1, N1b, C+, and C+b mappings 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 based on the first indication information carried in the downlink frame from the OLT.

[0100] Optionally, the ONU can determine whether the first optical transceiver option matches the second optical transceiver option supported by the second optical transceiver. Matching the first optical transceiver option with the second optical transceiver option includes any of the following examples:

[0101] Example 1: The first optical transceiver option is optical transceiver option N1, and the second optical transceiver supports the second optical transceiver option as 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 optical transceiver option N1b, respectively.

[0103] Example 3: The first optical transceiver option is optical transceiver option C+, and the second optical transceiver supports the second optical transceiver option as 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 optical transceiver option C+b, respectively.

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

[0106] If 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 uplink frame, or it can choose to send an uplink frame and report the second optical transceiver option in the uplink frame to attempt to register with the OLT or attempt to communicate with the OLT. Alternatively, the uplink frame can carry information indicating that the first and second optical transceiver options do not match, so that the OLT can determine that the optical transceiver option corresponding to the OLT's first optical transceiver does not match the optical transceiver option corresponding to the ONU's second optical transceiver. If the ONU does not send an uplink frame to the OLT, the ONU can generate a local alarm, for example, through indicator lights, displays, speakers, etc., or through the ONU's management platform. This alarm allows maintenance personnel to be notified of 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 uplink frame to the OLT, in addition to carrying the optical transceiver option corresponding to the second optical transceiver in the uplink frame, the ONU can also indicate to the OLT through a field in the uplink frame that the first optical transceiver option and the second optical transceiver option do not match. For example, bit "1110" in the 40th byte of the Serial_Number_ONU message can be used to indicate that the first optical transceiver option and the second optical transceiver option do not match. It should be noted that the message type used by the ONU to indicate the mismatch between the first and second optical transceiver options in this embodiment, as well as the description of the specific bytes and bits included in the message, are all optional examples and are not limited.

[0107] Optionally, the ONU may also send the first uplink frame directly to the OLT without checking whether the first optical transceiver option matches the second optical transceiver option supported by the second optical transceiver, and report the optical transceiver option corresponding to the second optical transceiver of the ONU.

[0108] Optionally, the ONU, having obtained the authorization time indicated by the downlink frame, sends the first uplink frame to the OLT. This first uplink frame is used to request registration with the OLT. Optionally, the first uplink frame also carries second indication information, which indicates the second optical transceiver options of the second optical transceiver. The second optical transceiver options are the optical transceiver options supported by the second optical transceiver, used to indicate the performance of the ONU's second optical transceiver. It can be understood that the first optical transceiver option matches the second optical transceiver option.

[0109] For a description of the first uplink frame structure, please refer to [link / reference]. Figure 5 As shown, where, Figure 5This is an example diagram of the frame structure of an embodiment of the uplink frame provided in this application. The first uplink frame 500 shown in this embodiment includes an Uplink FS header. The FS header includes an ONU-ID field, an indication (Ind) field, a hybrid error control (HEC) field, and an Uplink Physical Layer Operation Management and Maintenance (Uplink PLOAM, PLOAMu) field. The PLOAMu field includes at least the ONU serial number (Serial_Number_ONU) message. The ONU serial number shown in this embodiment serves as the device identifier of the ONU. This embodiment uses the Serial_Number_ONU message carrying second indication information as an example. The following describes how the Serial_Number_ONU message carries second indication information to indicate a second optical transceiver option.

[0110] The second indication information carried in the Serial_Number_ONU message, when it takes the first value, is used to indicate that the second optical transceiver option is optical transceiver option N1 or optical transceiver option C+. The second indication information carried in the Serial_Number message, when it takes the second value, 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 found in Table 7:

[0112] Table 7

[0113]

[0114] As shown in the example in Table 7, the 5th or 6th bit from the most significant bit to the least significant 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 ONU's second optical transceiver option is N1 or C+, then the value of this second indication information is 0. If the ONU's second optical transceiver option is N1b or C+b, then the value of this second indication information is 1.

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

[0116] Table 8

[0117]

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

[0119] In this embodiment, the ONU sends its serial number (SN) to the OLT to register with the OLT. This embodiment does not limit the method by which the ONU sends the SN to the OLT. For example, the SN may be carried in the Serial_Number_ONU message of the first uplink frame. Alternatively, the SN may be carried in the Serial_Number_ONU physical layer operation, or in the operations, administration and maintenance (OAM) message. Those skilled in the art will understand that the above description of the message type used to carry the second indication information, and the method of carrying the second indication information, is only one possible implementation. This application does not limit the specific bits and values ​​used to indicate 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 second optical transceiver supports only one second optical transceiver option (e.g., optical transceiver option N1b), then the currently configured optical transceiver option is that second optical transceiver option (e.g., optical transceiver option N1b). The ONU's second optical transceiver transmits uplink optical signals to the OLT according to the parameters indicated by the currently configured optical transceiver option (e.g., optical transceiver option N1b). If the second optical transceiver supports multiple second optical transceiver options (e.g., optical transceiver options N1 and N1b), then the currently configured optical transceiver option is one of the multiple second optical transceiver options (e.g., optical transceiver option N1). The ONU's second optical transceiver transmits uplink optical signals to the OLT according to the parameters indicated by the currently configured optical transceiver option (e.g., optical transceiver option N1). The optical transceiver options reported by the ONU for the second optical transceiver are used to indicate the currently configured optical transceiver options for the second optical transceiver. Optionally, when the uplink frame sent by the ONU in step 302 is a Serial_Number_ONU message for a registration request, the OLT will execute step 303.

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

[0122] When the OLT receives a SN from an ONU, the OLT determines that the SN is a new SN, that is, the SN does not have an associated ONUID, or the OLT has not assigned an ONU ID to the ONU corresponding to the SN. Then the OLT assigns an ONU ID to the ONU and creates a mapping relationship between the SN and the ONUID.

[0123] The OLT sends a first activation message to the ONU. This first activation message carries activation indication information and the ONU ID. The activation indication information is used to instruct the OLT to successfully allocate an ONU ID to the ONU. Specifically, after the OLT allocates the ONU ID to the ONU, it sends the ONU ID and activation indication information through the first activation message. The first activation message also includes the SN, which is used to indicate that the OLT has successfully allocated the ONU ID to the ONU corresponding to the SN. It should be noted that this application does not limit the first activation message. Optionally, the first activation message may include an ONU ID allocation (AssignONU_ID) message and / or a collision feedback message. For example, when the first activation message includes an Assign ONU_ID message, the Assign ONU_ID message carries activation indication information, the ONU ID, and the SN. Therefore, the ONU can receive the Assign ONU_ID message according to the SN and obtain the corresponding ONU ID allocated by the OLT. The activation indication information can be the 18th byte in the Assign ONU_ID message, i.e., the name of this byte is allocationfeedback. Those skilled in the art will understand that the descriptions of the activation message type and carried fields in this embodiment are optional examples and are not limited.

[0124] In this embodiment, the OLT measures the distance to the ONU to calculate its RTD (Real-Time Difference) and then sends an EQD (Equal-Time Difference) to the ONU. The specific process of the OLT measuring the distance to the ONU is not detailed here. After the distance measurement is completed, the ONU enters state O5, indicating successful ONU authentication. This means the ONU can connect to the OLT's PON interface and be managed by the OLT, enabling uplink and downlink data transmission with the OLT. This embodiment uses successful ONU activation as an example. If ONU authentication fails, it can be understood as an invalid ONU identity, meaning the ONU cannot or is not allowed to connect to the OLT's PON interface. In this case, the OLT will not execute steps 303, etc., so that the OLT will not manage the ONU.

[0125] When the OLT receives the first and second optical transceiver options, it can determine whether these options match. If a match is confirmed, the ONU is then registered. This ensures that the second optical transceiver option of the successfully activated ONU matches the OLT's first option, guaranteeing successful reception of uplink optical signals from the ONU and ensuring reliable uplink transmission. Optionally, if a mismatch is found, the OLT can continue the ONU registration process to attempt to receive uplink optical signals from the ONU. Optionally, the OLT can also register the ONU directly without determining a match when receiving the first and second optical transceiver options.

[0126] If optical networks are applied to scenarios such as 50G PON and 200G PON, taking 50G PON as an example, the technology for 50G PON is more complex. For the same optical link loss level, 50G PON defines two independent transceiver options, such as optical transceiver options N1 and N1b, or C+ and C+b. It should be clarified that the descriptions of optical transceiver options N1, N1b, C+, and C+b shown in this embodiment are all optional examples and can be applied to other types and numbers of optical transceiver options; no specific limitation is made. Even under the same optical link loss level, different optical transceiver options exhibit different optical transceiver performance. The method described in this embodiment achieves a negotiation process between the OLT's first optical transceiver option and the ONU's second optical transceiver option during ONU registration. This ensures that the ONU's first and second optical transceiver options are matched, thereby guaranteeing that the performance of the first and second optical transceivers is compatible. For example, when the first and second optical transceiver options are matched, the receiving sensitivity of the first optical transceiver (indicated by the first optical transceiver option) can successfully receive the optical power (indicated by the second optical transceiver option) from the second optical transceiver. This effectively ensures the reliability of uplink optical signal transmission. Furthermore, based on this negotiation process, the OLT obtains the ONU's second optical transceiver option, and the ONU obtains the OLT's first optical transceiver option, facilitating the operation and maintenance of the optical network.

[0127] Figure 3b A flowchart illustrating the steps of a second embodiment of the communication method provided in this application. Figure 3bIn the illustrated embodiment, the optical transceiver options supported by the ONU can be changed according to the instructions of the OLT, as follows:

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

[0129] For a description of the execution process of step 311 shown in this embodiment, please refer to [link to documentation]. Figure 3a The steps shown in step 301 are not detailed here.

[0130] Step 312: The ONU sends the first uplink frame to the OLT, reporting the optical transceiver options corresponding to the second optical transceiver of the ONU.

[0131] In this embodiment, the optical transceiver option corresponding to the second optical transceiver of the ONU is taken as an example, specifically the fifth optical transceiver option. This fifth optical transceiver option is used to indicate the performance of the second optical transceiver. For a detailed explanation of the fifth optical transceiver option shown in this embodiment, please refer to [link to documentation]. Figure 3a The description of the second optical transceiver option shown is not detailed here.

[0132] Optionally, the ONU in step 312 can determine whether the fifth optical transceiver option matches the first optical transceiver option. For details, please refer to step 302, which will not be elaborated further. In this example, if the ONU determines that the first optical transceiver option matches the fifth optical transceiver option, the ONU sends the first uplink frame to the OLT.

[0133] Optionally, the ONU may also send the first uplink frame directly to the OLT without checking whether the first optical transceiver option matches the fifth optical transceiver option, reporting the optical transceiver option corresponding to the ONU's second optical transceiver. Optionally, when the uplink frame sent by the ONU in step 312 is a Serial_Number_ONU message used for registration request, the OLT will execute step 313.

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

[0135] For a description of step 313 shown in this embodiment, please refer to [link to documentation]. Figure 3a The corresponding step 303 is shown below, and will not be elaborated further.

[0136] Step 314: If the first optical transceiver option and the fifth optical transceiver option do not match, and the fifth optical transceiver option supports changes, then the ONU sends the first uplink frame to the OLT.

[0137] For the explanation of how the ONU determines the mismatch between the first optical transceiver option and the fifth optical transceiver option as shown in this embodiment, please refer to [link to documentation]. Figure 3aThe explanation for the mismatch between the first and second optical transceiver options is not detailed here. If the ONU determines that the first and fifth optical transceiver options do not match, it will then determine whether the fifth optical transceiver option supports modification. Modifying 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, then the fifth optical transceiver option supports modification. If the fifth optical transceiver option does not support modification, it means that the fifth optical transceiver option cannot be changed. For example, if the fifth optical transceiver option is N1, it cannot be changed.

[0138] If the ONU determines that the first optical transceiver option and the fifth optical transceiver option do not match, the ONU changes the fifth optical transceiver option to the second optical transceiver option. In this embodiment, if the first optical transceiver option and the fifth optical transceiver option do not match, and the fifth optical transceiver option supports changing, 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. Wherein, the first optical transceiver option matches the second optical transceiver option. For an explanation of the matching of the first optical transceiver option and the second optical transceiver option, please refer to [link to documentation]. Figure 3a The corresponding step 302 is shown below, and will not be elaborated further. 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 uplink frame to the OLT, reporting the optical transceiver option corresponding to the ONU's second optical transceiver (i.e., the changed second optical transceiver option). For an explanation of the first uplink frame, please refer to [link to documentation]. Figure 3a The corresponding step 302 is shown below, and will not be elaborated further.

[0139] This embodiment does not limit the number of fifth optical transceiver options supported by the second optical transceiver. If the second optical transceiver supports only one fifth optical transceiver option, this fifth optical transceiver option does not match the first optical transceiver option and can be changed. The optical transceiver option currently configured on the second optical transceiver is this fifth optical transceiver option. If the ONU changes the optical transceiver option supported by the second optical transceiver to the second optical transceiver option, then the optical transceiver option currently configured on the second optical transceiver will also be changed to the second optical transceiver option. The second optical transceiver of the ONU sends uplink optical signals to the OLT according to the parameters indicated by the currently configured second optical transceiver option. If the second optical transceiver supports multiple fifth optical transceiver options (e.g., optical transceiver options N1 and N1b), and these fifth optical transceiver options do not match the first optical transceiver options and can be changed, the ONU will change the optical transceiver option supported by the second optical transceiver to the second optical transceiver option. In this case, there can also be multiple second optical transceiver options, and the currently configured optical transceiver option is one of these multiple options. The ONU's second optical transceiver sends uplink optical signals to the OLT according to the parameters indicated by the currently configured optical transceiver option. Optionally, when the uplink frame sent by the ONU in step 314 is a Serial_Number_ONU message used for registration requests, the OLT will execute step 315.

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

[0141] Upon receiving the first uplink frame via step 314, the OLT sends a first activation message to the ONU. For details, please refer to [link to relevant documentation]. Figure 3a The corresponding step 303 is shown below, and will not be elaborated further.

[0142] Step 316: If the first optical transceiver option does not match the fifth optical transceiver option, and the fifth optical transceiver option does not support changes, then the ONU sends a second uplink frame to the OLT.

[0143] If the first optical transceiver option and the fifth optical transceiver option do not match, the ONU sends a second uplink frame to the OLT to attempt registration with the OLT. This second uplink frame reports the optical transceiver option corresponding to the ONU's second optical transceiver (i.e., the fifth optical transceiver option, which does not support changes). For instructions on the ONU sending the second uplink frame, please refer to [link to documentation]. Figure 3b The description of sending the first uplink frame in step 312 is omitted here. Optionally, when the uplink frame sent by the ONU in step 306 is a 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 instructions on step 317, please refer to [link / reference]. Figure 3b The description of the first activation message shown in 315 is omitted here.

[0146] Using the method shown in this embodiment, during the ONU registration process, a negotiation process is implemented between the OLT's first optical transceiver option and the ONU's fifth optical transceiver option. If the first optical transceiver option and the fifth optical transceiver option do not match, the ONU can change the fifth optical transceiver option to the second optical transceiver option. If the second optical transceiver option matches the first optical transceiver option, then the performance of the first optical transceiver is guaranteed to match that of the second optical transceiver.

[0147] Figure 6 A flowchart illustrating the steps of a third embodiment of the communication method provided in this application. Figure 3a as well as Figure 3b In the illustrated embodiment, taking the OLT and ONU each supporting only one optical transceiver option as an example, Figure 6 In the illustrated embodiment, both the OLT and ONU support multiple optical transceiver options.

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

[0149] To enable ONU registration with the OLT, the OLT broadcasts this downlink frame. This downlink frame indicates the authorization time; for details, please refer to [link to documentation]. Figure 3a The corresponding step 301 is shown below, and will not be elaborated upon. This downlink frame carries first indication information, which indicates the first optical transceiver option and the fourth optical transceiver option. For an explanation of the first optical transceiver option, please refer to [link to relevant documentation]. Figure 3a The corresponding explanations are not detailed here. The fourth optical transceiver option shown in this embodiment is used to indicate the performance of the first optical transceiver, and both the first and fourth optical transceiver options correspond to the same optical link loss level. For example, the first and fourth optical transceiver options correspond to optical link loss level N1, and one of them is optical transceiver option N1, while the other is optical transceiver option N1b. As another example, the first and fourth optical transceiver options correspond to optical link loss level C+, and one of them is optical transceiver option C+, while the other is optical transceiver option C+b. For an explanation of the first indication information indicating the fourth optical transceiver option, please refer to [link to documentation]. Figure 3a The first indication information shown in step 301 indicates the description of the first optical transceiver option, which will not be elaborated further.

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

[0151] In this embodiment, the ONU supports a second optical transceiver option and a third optical transceiver option. Both the second and third optical transceiver options are options supported by the second optical transceiver included in the ONU. For a description of the second and third optical transceiver options, please refer to [link to documentation]. Figure 3a The specific details of the optical transceiver options supported by the corresponding second optical transceiver are not elaborated here. The second and third optical transceiver options shown in this embodiment correspond to the same optical link loss level. For example, the second and third optical transceiver options correspond to optical link loss level N1, and one of the second and third optical transceiver options is optical transceiver option N1, while the other is optical transceiver option N1b. As another example, the second and third optical transceiver options correspond to optical link loss level C+, and one of the second and third optical transceiver options is optical transceiver option C+, while the other is optical transceiver option C+b.

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

[0153] Optionally, in this embodiment, the ONU may send the uplink frame when at least one of the second and third optical transceiver options matches one of the first and fourth optical transceiver options. For an explanation of matching two different optical transceiver options, please refer to [link to documentation]. Figure 3a The corresponding step 303 is shown below, and will not be elaborated further.

[0154] Optionally, the ONU may also send an uplink frame directly to the OLT without checking whether the optical transceiver options corresponding to the first optical transceiver match those corresponding to the second optical transceiver, reporting the optical transceiver options corresponding to the ONU's second optical transceiver. When the uplink frame sent by the ONU in step 602 is a Serial_Number_ONU message used for registration requests, the OLT will execute step 603.

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

[0156] When the OLT receives an uplink frame from the ONU, the OLT assigns an ONU ID to the ONU and simultaneously establishes a mapping between the SN and the ONUID. The OLT sends an activation indication message and the ONU ID to the ONU. The activation indication message indicates that the OLT has successfully assigned an ONU ID to the ONU. The activation message shown in this embodiment also indicates the target optical transceiver option, which is one of a second optical transceiver option and a third optical transceiver option. That is, the OLT instructs the ONU to operate on the target optical transceiver option by sending an activation message 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 information about the second optical transceiver of the ONU supporting options C+ and C+b through the uplink frame. If the OLT determines that the first optical transceiver receives uplink optical signals based on option C+b, then, to ensure the reliability of uplink optical signal transmission, the OLT expects the target optical transceiver option operated by the ONU to also be C+b, so as to ensure that the optical transceiver option operated by the first optical transceiver is in a state that matches the optical transceiver option operated by the second optical transceiver.

[0158] The activation message shown in this embodiment can be Assign ONU_ID, which can be found in Table 9:

[0159] Table 9

[0160]

[0161] The target optical transceiver option can be indicated using the target bit in the Assign ONU_ID message. Specifically, the target bit is the 6th bit from the most significant bit to the least significant bit in the 15th byte of the Assign ONU_ID message. For example, if the OLT wants the ONU to operate on an N1 or C+ target optical transceiver option, then the target bit T is 0; if the OLT wants the ONU to operate on an N1b or C+b target optical transceiver option, then the target bit T is 1. It should be noted 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 using 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, upon receiving an activation message, the ONU obtains the target optical transceiver option. For example, the target optical transceiver option is C+b. Then, the ONU can determine that the OLT wants the ONU to operate with the target optical transceiver option C+b in order to send uplink optical signals to the OLT based on this option. Therefore, the ONU configures its second optical transceiver option to the target optical transceiver option C+b, enabling the ONU to send uplink optical signals to the OLT based on the parameters indicated by the target optical transceiver option C+b. A description of the target optical transceiver option C+b is shown in Table 6, and will not be elaborated further.

[0164] Using the method shown in this embodiment, the OLT supports multiple optical transceiver options under the same link budget parameters, and the ONU also supports multiple optical transceiver options under the same link budget parameters. The OLT can directly indicate the optical transceiver option that the ONU is operating on through an activation message, so that the ONU can clearly know which optical transceiver option it is based on for uplink optical signal transmission among the multiple supported optical transceiver options, ensuring the reliability of uplink optical signal transmission. Moreover, it reduces the efficiency of the OLT configuring the optical transceiver option on which the first optical transceiver operates and the ONU configuring the optical transceiver option on which the second optical transceiver operates.

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

[0166] (1) The step numbers of the flowcharts described in the embodiments are only examples of the execution flow and do not constitute a restriction on the order of execution of the steps. There is no strict execution order between steps that have no temporal dependency relationship with each other in the embodiments of this application. In addition, not all steps shown in the flowcharts are mandatory steps. Some steps can be added or deleted based on the actual needs of each flowchart.

[0167] (2) In the various embodiments of this application, unless otherwise specified or logically conflicting, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0168] (3) The above embodiments use some messages and parameters from the PON system, but in actual implementation, different messages or message names may be used, and this application embodiment does not limit this. Furthermore, in some of the above embodiments, exemplary descriptions are mainly based on devices in existing PON network architectures (OLT, ONU). It should be understood that this application embodiment does not limit the specific form of the device. For example, any device that can achieve the same function in the future is applicable to this application embodiment.

[0169] (4) In the above method embodiments, the methods and operations implemented by the device (such as OLT, ONU) can also be implemented by the device components (such as chips or circuits), without limitation.

[0170] The methods provided by the embodiments of this application have been described in detail above. The apparatus and chip system provided by the embodiments of this application will be described in detail below. It should be understood that the descriptions of the apparatus embodiments correspond to the descriptions of the method embodiments; therefore, any content not described in detail can be referred to the method embodiments above, and for the sake of brevity, will not be repeated here.

[0171] The communication methods described above are primarily introduced from the perspective of interaction between the OLT and ONU. It is understandable that, in order to achieve the aforementioned functions, the OLT and ONU contain the corresponding hardware structures and / or software modules for executing each function.

[0172] It is understood that, in order to implement the functions in the above embodiments, the OLT and ONU include hardware structures and / or software modules corresponding to perform each function. Those skilled in the art should readily recognize that, based on the units and method steps described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

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

[0174] Optionally, the communication device 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 execute corresponding processing control actions.

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

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

[0177] It should be understood that the specific process of each module performing the above-mentioned steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0178] Optionally, the communication device 700 can be a device including an OLT, or a component configured in the OLT, such as a chip of the OLT. In this case, the receiving module 703 and the transmitting module 701 can be interface circuits, pins, etc. Specifically, the interface circuit can include input circuits and output circuits, wherein the receiving module 703 can include input circuits, the transmitting module 701 can include output circuits, and the processing module 702 can include processing circuits.

[0179] Figure 8 This is a schematic block diagram illustrating another embodiment of the communication device provided in this application. The communication device 800 includes a processor 801 and an optical transceiver 802. The optical transceiver 802 is used for photoelectric conversion to exchange data with the processor 801. The optical transceiver 802 is also used for transmitting and receiving optical signals with another communication device. Optionally, the optical transceiver 802 may be an interface, a bus, a circuit, or a device capable of implementing transmission and reception functions. For a further description of the optical transceiver 802, please refer to... Figure 1The corresponding explanations will not be elaborated upon here. Optionally, the device in the optical transceiver 802 used to implement the receiving function can be regarded as a receiving module, and the device in the optical transceiver 802 used to implement the transmitting function can be regarded as a transmitting 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 enable the exchange of information 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 enable information exchange 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 a processor 801, which executes the computer programs or instructions and / or data stored in the memory 803, causing the methods in the above-described method embodiments to be performed. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and can be electrical, mechanical, or other forms, used for information exchange between devices, units, or modules. The processor 801 can operate in conjunction with the memory 803. It should be noted 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 one or more memory 803.

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

[0185] This application embodiment does not limit the specific connection medium between the processor 801, optical transceiver 802, and memory 803. This application embodiment... Figure 8 The processor 801, optical transceiver 802, and memory 803 are connected via a bus 804. Figure 8 The connections between other components are indicated by thick lines and are for illustrative purposes only, not as limiting information. The bus can be divided into address bus, data bus, control bus, etc.

[0186] It should be understood that, for ease of representation, Figure 8 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0187] Figure 9This application provides a schematic diagram of one embodiment of a chip system. The chip system 900 (or processing system) includes logic circuitry 910 and an input / output interface 920.

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

[0189] Optionally, the logic circuit 910 may be implemented by one or more processors, including the one or more processors or the processing portion of the one or more processors.

[0190] Optionally, the input / output interface 920 may include transceiver circuitry, a transceiver, input / output circuitry, or a communication interface.

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

[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] This application also provides a computer-readable storage medium storing computer instructions for implementing the methods executed by the OLT or ONU in the above-described method embodiments.

[0194] For example, when the computer program is executed by the computer, it enables the computer to implement the methods executed by the OLT or ONU in the various embodiments of the above methods.

[0195] This application also provides a computer program product comprising instructions which, when executed by a computer, implement the methods performed by the OLT or ONU in the above-described method embodiments.

[0196] This application also provides a PON system, which includes the ONU and / or OLT described in the above embodiments. For example, the system includes... Figure 1 The ONU and OLT in the system. For example, the communication system includes... Figure 2 The master device and / or slave device shown.

[0197] The explanations and beneficial effects of the relevant contents in any of the devices provided above can be found in the corresponding method embodiments provided above, and will not be repeated here.

[0198] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of apparatus or units may be electrical, mechanical, or other forms.

[0199] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially 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, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. 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 one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks, SSDs). For example, the aforementioned available media include, but are not limited to, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks, and other media capable of storing program code.

[0200] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, The method includes: An optical network terminal device sends an uplink frame to an optical network central office device. The uplink frame carries the device identifier and second indication information of the optical network terminal device. The value of the second indication information includes a first value or a second value. The first value indicates that the second optical transceiver option of the optical network terminal device 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 includes: The optical network terminal device receives a downlink frame from the optical network central office device. The downlink frame carries first indication information. The value of the first indication information includes a third value or a fourth value. The third value indicates that the first optical transceiver option of the optical network central office device is N1 or C+, and the fourth value indicates that the first optical transceiver option is N1b or 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, Matching the first optical transceiver option with the second optical transceiver option includes the first optical transceiver option being N1, the second optical transceiver option being N1 and / or N1b, or the first optical transceiver option and the second optical transceiver option being 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 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, wherein the target parameter is the transmit optical power calculated by subtracting the transmitter and dispersive eye diagram 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 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.

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

10. The method according to claim 5, characterized in that, Matching the first optical transceiver option with the second optical transceiver option includes the first optical transceiver option being optical transceiver option C+, and the second optical transceiver option being optical transceiver option C+ and / or optical transceiver option C+b, or the first optical transceiver option and the second optical transceiver option being 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 optical transceiver option C+, the minimum average transmit power mapped by 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, wherein the target parameter is the transmit optical power calculated by subtracting the transmitter and dispersive eye diagram 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 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.

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

14. The method according to claim 3, characterized in that, The downlink frame is a burst profile message.

15. The method according to claim 14, characterized in that, In the fifth byte of the burst profile message, the fourth bit from the most significant bit to the least significant bit contains the first indication information.

16. The method according to claim 3, characterized in that, The third value is 0, and the fourth value is 1.

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

18. The method according to claim 17, characterized in that, The first value is 0, and the second value is 1.

19. The method according to claim 17 or 18, characterized in that, The method further includes: The optical network central office equipment sends a downlink frame to the optical network terminal equipment. The downlink frame carries first indication information. The value of the first indication information includes a third value or a fourth value. The third value indicates that the first optical transceiver option of the optical network central office equipment is N1 or C+, and the fourth value indicates that the first optical transceiver option is N1b or C+b.

20. The method according to claim 19, characterized in that, The third value is 0, and the fourth value is 1.

21. The method according to claim 19, characterized in that, The downlink frame is a burst profile message.

22. The method according to claim 21, characterized in that, In the fifth byte of the burst profile message, the fourth bit from the most significant bit to the least significant bit contains the first indication information.

23. The method according to claim 19, characterized in that, The optical distribution network class (ODN class) field of the downlink frame carries the first indication information.

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

25. The method according to claim 17 or 18, characterized in that, The uplink frame is a Serial_Number_ONU message.

26. A communication device, characterized in that, The device includes an optical transceiver and a processor, wherein the optical transceiver is used to transmit and receive optical signals, and the processor is used to perform the method of any one of claims 1 to 16, or the processor is used to perform the method of any one of claims 17 to 25.

27. A communication device, characterized in that, include: A module for performing the method as described in any one of claims 1 to 16, or a module for performing the method as described in any one of claims 17 to 25.

28. A chip, characterized in that, The chip includes a processor and a communication interface, the communication interface being used to receive data and transmit it to the processor, or to send data from the processor to another chip, the processor being used to perform the method as described in any one of claims 1 to 16, or the method as described in any one of claims 17 to 25.

29. A communication system, characterized in that, It includes an optical network central office device and an optical network terminal device, wherein the optical network central office device is configured to perform the method as described in any one of claims 17 to 25, and the optical network terminal device is configured to perform the method as described in any one of claims 1 to 16.

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