CN114584211B

CN114584211B - Detection method of rogue optical network terminal and optical communication device

Info

Publication number: CN114584211B
Application number: CN202011363460.2A
Authority: CN
Inventors: 曾小飞; 郑刚
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-11-28
Filing date: 2020-11-28
Publication date: 2024-05-17
Anticipated expiration: 2040-11-28
Also published as: CN114584211A

Abstract

The application discloses a detection method of a rogue optical network terminal and an optical communication device, which are used for solving the problem that service transmission of other ONTs is affected due to the fact that which is uncontrolled rogue ONT cannot be detected. Specifically, after determining that an uncontrolled rogue ONT exists, the access mode of the OLT is switched from the first access mode of normal communication to detect the second access mode of the uncontrolled rogue ONT, so that other ONTs except the uncontrolled rogue ONT in the plurality of ONTs to be detected cannot establish communication connection with the OLT. In one way, the MAC module and the optical module in the OLT support both the first access mode and the second access mode, and in another way, the MAC module for detection, or the MAC module and the optical module, are configured in the OLT.

Description

Detection method of rogue optical network terminal and optical communication device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a method for detecting a rogue optical network terminal and an optical communication device.

Background

In a time division multiplexed (time division multiplexing, TDM) passive optical network (passive optical network, PON) system, different optical network devices, such as optical network terminals (optical network termination, ONTs) or optical network units (optical network unit, ONUs), send upstream optical signals in different time slots under the control of an optical line terminal (optical line termination, OLT).

In a real PON system, rogue ONTs often occur. Rogue ONTs refer to ONTs that no longer specify time slot emissions. Because the rogue ONT works in a time slot which does not belong to the rogue ONT, the uplink time slot of the normal ONT is occupied, so that the OLT cannot normally receive the uplink service sent by other ONTs, and the service of the normal ONT is lost and is disconnected.

At present, when checking whether a rogue ONT exists, an OLT generally informs all ONTs to turn off laser transmitters and turns on the laser transmitters one by one to check the rogue ONT. But after the OLT notifies all ONTs to turn off the laser transmitter, if an ONT is detected to be still lit, then an uncontrolled rogue ONT exists in the optical network system. Since the uncontrolled rogue ONT cannot turn off the laser transmitter under the control of the OLT, it cannot be checked which ONT is the uncontrolled rogue ONT, affecting the uplink traffic transmissions of the other ONTs.

Disclosure of Invention

The embodiment of the application provides a method for detecting a rogue optical network terminal and an optical communication device, which are used for checking uncontrolled rogue ONTs, so that the influence of the rogue ONTs on the service transmission of other ONTs is reduced.

In a first aspect, an embodiment of the present application provides an optical communication apparatus, which is applied to an optical line terminal OLT, and the apparatus may include a processing module and a communication module; the communication module is used for transmitting optical signals with a plurality of optical line terminals ONTs; the processing module is used for switching the communication module from the first access mode to the second access mode when uncontrolled rogue ONTs exist in the plurality of ONTs; the processing module is further used for determining that the first ONT is an uncontrolled rogue ONT when the communication module is determined to be in the second access mode and establish communication connection with the first ONT; wherein the uncontrolled rogue ONT is: when the communication module works in a first access mode, a rogue ONT which cannot execute a command sent by the communication module in ONTs connected with the communication module; when the communication module works in the first access mode, other ONTs except for the uncontrollable rogue ONT in the ONTs connected with the communication module can be connected with the communication module in a communication mode, and when the communication module works in the second access mode, other ONTs except for the uncontrollable rogue ONT in the ONTs connected with the communication module cannot be connected with the communication module in a communication mode.

According to the scheme, the communication module works in the access mode adopted by the uncontrollable rogue ONT, so that other ONTs cannot establish communication connection with the communication module, only the uncontrollable rogue ONT can establish communication connection with the communication module, and therefore the uncontrollable rogue ONT capable of establishing communication connection can be determined.

In one possible design, the communication module includes a first communication sub-module that supports a first access mode and a second access mode. In the above design, the communication module adopts the communication sub-module supporting multiple access modes, so that when the first communication sub-module works in the first access mode, the ONTs, except for the uncontrollable rogue ONT, in the ONTs connected with the first communication sub-module can be connected with the first communication sub-module in a communication mode, and when the first communication sub-module works in the second access mode, the ONTs, except for the uncontrollable rogue ONT, in the ONTs connected with the first communication sub-module cannot be connected with the first communication sub-module in a communication mode.

Wherein an uncontrolled rogue ONT can be interpreted as: and when the first communication sub-module works in the first access mode, the rogue ONT which is connected with the first communication sub-module and cannot execute the command sent by the first communication sub-module can not be executed.

In one possible design, the communication module may include N communication sub-modules, including the first communication sub-module, and different communication sub-modules may communicate with different ONTs through different optical ports. The plurality of ONTs are all connected with the first communication submodule through one optical port.

In one possible design, the first communication sub-module includes a first media access control MAC module and a first optical module, the first MAC module is connected to the processing module, and the first MAC module is connected to the first optical module; the first MAC module supports a first access mode and a second access mode, and the first optical module supports the first access mode and the second access mode.

In one possible design, the communication module includes a second communication sub-module and a detection sub-module; the second communication sub-module supports a first access mode, and the detection sub-module supports a second access mode; the processing module is specifically used for switching the communication between the second communication sub-module and the plurality of ONTs into the communication between the detection sub-module and the plurality of ONTs when the communication module needs to be switched from the first access mode to the second access mode; under the condition that the second communication sub-module is communicated with a plurality of ONTs, the second communication sub-module works in a first access mode, and other ONTs except for an uncontrolled rogue ONT in the plurality of ONTs can establish communication connection with the second communication sub-module; the detection sub-module operates in a second access mode when the detection sub-module is in communication with a plurality of ONTs, and other ones of the plurality of ONTs except for the uncontrolled rogue ONT cannot establish a communication connection with the detection sub-module.

Uncontrolled rogue ONTs can be interpreted as: and when the second communication sub-module works in the first access mode, the rogue ONT which is connected with the second communication sub-module and cannot execute the command sent by the second communication sub-module can not be executed.

In the above design, by adding a separate detection sub-module to the optical communication device, it is used to detect which of the plurality of ONTs is the uncontrolled rogue ONT.

In one possible design, the second communication sub-module is connected to the first optical port, and the detection sub-module is connected to the second optical port; the processing module is specifically configured to complete switching the communication module from the first access mode to the second access mode when detecting that the optical fibers used for connecting the plurality of ONTs are switched from connecting the first optical port to connecting the second optical port. In the above design, the second communication sub-module is connected with the detection sub-module by different optical ports, and the switching of the access modes is realized by switching the connection relation between the different optical ports and the optical fibers for connecting the plurality of ONTs.

In one possible design, the processing module is specifically configured to switch, when the communication module needs to be switched from the first access mode to the second access mode, communication between the second communication sub-module and the first optical port to communication between the detection sub-module and the first optical port, where the first optical port is connected to the plurality of ONTs through an optical fiber. In the above design, the detection sub-module may employ an optical port through which the second communication sub-module normally communicates with a plurality of ONTs when detecting which is an uncontrolled rogue ONT. Therefore, the switching of the access mode is realized by switching the connection relation between the second communication sub-module and the detection sub-module and the first optical port.

In one possible design, the communication module further comprises a first switch connected to the second communication sub-module, the first switch being connected to the detection sub-module; the first switch is used for communicating the second communication sub-module with the first optical port so that the second communication sub-module works in a first access mode; or the detection sub-module is communicated with the first optical port, so that the detection sub-module works in a second access mode. In the design, the connection relation between the second communication sub-module and the detection sub-module and the first optical port is switched by arranging the first switcher, and the design is simple and easy to realize.

In one possible design, the first switch is a 1×2 optical switch, the 1×2 optical switch including an input, a first output, and a second output; the input end is connected with the first optical port, the first output end is connected with the second communication sub-module, and the second output end is connected with the detection sub-module; the input end is communicated with the first output end, so that the second communication sub-module is communicated with the first optical port; the input end is communicated with the second output end, so that the detection sub-module is communicated with the first optical port.

In the design, the connection relation between the second communication sub-module and the detection sub-module and the first optical port is switched by arranging the 1 multiplied by 2 optical switch, and the design is simple and easy to realize.

In one possible design, the communication module includes N communication sub-modules including a second communication sub-module, the device includes N optical ports including a first optical port, N is an integer greater than 1; the first switcher comprises 1 XN optical switches and N1 X2 optical switches which are in one-to-one correspondence with the N communication sub-modules; the 1 x N optical switch comprises an input end and N output ends, and the 1 x2 optical switch comprises an input end, a first output end and a second output end; each first output end of the N1 multiplied by 2 optical switches is respectively connected with a corresponding communication submodule; n second output ends in the N1X 2 optical switches are connected with N output ends of the 1X N optical switches in a one-to-one correspondence manner; the input ends of the N1X 2 optical switches are connected with the N optical ports in a one-to-one correspondence manner; the input end of the 1 XN optical switch is connected with the detection submodule; the input end of the 1X 2 optical switch is connected with the second output end, and the input end of the 1X 2 optical switch corresponding to the second communication sub-module in the N1X 2 optical switches is connected with the second output end, so that the detection sub-module works in a second access mode; the third output end is an output end connected with the 1 multiplied by 2 optical switch corresponding to the second communication sub-module in the N output ends; the input end of the 1 x2 optical switch corresponding to the first communication sub-module in the N1 x2 optical switches is connected with the first output end, so that the second communication sub-module works in the first access mode.

In the above design, when the communication module includes a plurality of communication sub-modules, the switching of the access mode on a certain optical port, or the switching of the communication protocol adopted by the optical signal output on a certain optical port, may be achieved by setting the 1×n optical switches and the N1×2 optical switches corresponding to the N communication sub-modules one by one.

In one possible design, the second communication sub-module includes a second MAC module and a second optical module, one end of the second MAC module is connected to the processing module, the other end of the second MAC module is connected to one end of the second optical module, and the other end of the second optical module is connected to the first switch; the detection submodule comprises a third MAC module and a third optical module, one end of the third MAC module is connected with the processing module, the other end of the third MAC module is connected with one end of the third optical module, and the other end of the third optical module is connected with the first switch.

In one possible design, the communication module further includes a second switch including a first terminal, a second terminal, and a third terminal, the second communication sub-module includes a fourth MAC module and a fourth optical module, the fourth MAC module and the fourth optical module support a first access mode, and the fourth optical module further supports a second access mode; the detection submodule comprises a fifth MAC module, and the fifth MAC module supports a second access mode; one end of the fourth MAC is connected with the processing module, the other end of the fourth MAC is connected with the first terminal of the second switcher, the second terminal of the second switcher is connected with the fourth optical module, and the third terminal of the second switcher is connected with the fifth MAC module; under the condition that the first terminal is communicated with the second terminal, the fourth MAC module and the fourth optical module work in a first access mode; and under the condition that the second terminal is communicated with the third terminal, the fourth MAC module and the fourth optical module work in a second access mode.

In the above design, by providing the second switch, the second switch is connected between the MAC module and the optical module, and the detection sub-module can share the optical module in which the second communication sub-module normally communicates with the plurality of ONTs when detecting which is the uncontrolled rogue ONT. Thereby, the switching of the access mode of the communication module is realized by switching the connection relation between the fourth MAC module and the fifth MAC module and the multimode optical module (fourth optical module) and the access mode of the multimode optical module.

In one possible design, the second switch is a 1×2 electrical switch, the 1×2 electrical switch including an input, a first output, and a second output; the second terminal is used as an input end, the first terminal is used as a first output end, and the third terminal is used as a second output end. The above provides a simple to implement construction of the second switch.

In one possible design, the communication module further includes a third switcher, the communication module includes N communication sub-modules including a second communication sub-module, the device includes N optical ports including a first optical port, and N is a positive integer; each communication sub-module in the N communication sub-modules comprises a sixth MAC module and a sixth optical module, and the detection sub-module comprises a seventh MAC module; a sixth MAC module and a sixth optical module in the second communication sub-module support a first access mode, the sixth optical module in the second communication sub-module also supports a second access mode, and a seventh MAC module supports the second access mode; the third switcher comprises 1×n electric switches and N1×2 electric switches which are in one-to-one correspondence with the N communication sub-modules; the 1 x N electric switch comprises an input end and N output ends, and the 1 x 2 electric switch comprises an input end, a first output end and a second output end; n first output ends of the N1 multiplied by 2 electric switches are connected with N sixth MAC modules in a one-to-one correspondence manner; n second output ends in the N1X 2 electric switches are connected with N output ends of the 1X N electric switches in a one-to-one correspondence manner; the input ends of the N1 multiplied by 2 electric switches are respectively connected with the N sixth optical modules in a one-to-one correspondence manner; the input end of the 1 XN electric switch is connected with the seventh MAC module; the input end of the 1 x 2 electric switch corresponding to the second communication sub-module in the N1 x 2 electric switches is connected with the first output end, and when the input end of the 1 x N electric switch is connected with the third output end of the 1 x N electric switch, the sixth MAC module and the sixth optical module in the second communication sub-module work in the first access mode, and the third output end is the output end connected with the 1 x 2 optical switch corresponding to the second communication module in the N output ends; the seventh MAC module and the sixth optical module operate in the second access mode when an input terminal of a1×2 electrical switch corresponding to the second communication sub-module of the N1×2 electrical switches is connected to the second output terminal.

In the above design, when the communication module includes a plurality of communication sub-modules, the switching of the access mode on a certain optical port, or the switching of the communication protocol adopted by the optical signal output on a certain optical port, may be achieved by setting the 1×n electrical switches and the N1×2 electrical switches corresponding to the N communication sub-modules one by one.

In one possible design, the processing module is further configured to obtain, during a process of establishing a communication connection between the communication module and the first ONT, identification information of the first ONT, where the identification information of the first ONT is used to identify an identity of the first ONT.

In a second aspect, an embodiment of the present application provides a method for detecting an ONT of a rogue optical network terminal, where the method is applied to an OLT, and includes: when uncontrolled rogue ONTs exist in a plurality of ONTs connected with the OLT, the OLT is switched from a first access mode to a second access mode; wherein the uncontrolled rogue ONT is: in the first access mode, a rogue one of the plurality of ONTs that cannot execute a command sent by the OLT; when the OLT is detected to establish connection with the first ONT, determining that the first ONT is an uncontrolled rogue ONT; when the channel of the OLT for connecting the plurality of ONTs works in the first access mode, other ONTs except for the uncontrollable rogue ONT in the plurality of ONTs can be connected with the OLT in a communication mode, and when the communication module works in the second access mode, other ONTs except for the uncontrollable rogue ONT in the plurality of ONTs cannot be connected with the OLT in a communication mode.

In one possible design, the OLT includes a first communication sub-module that supports a first access mode and a second access mode; switching the OLT from the first access mode to the second access mode includes: and switching the first communication sub-module from the first access mode to the second access mode.

In one possible design, the first communication sub-module includes a first media access control, MAC, module and a first optical module, the first MAC module supporting a first access mode and a second access mode, the first optical module supporting the first access mode and the second access mode; switching the first communication sub-module from operating in the first access mode to the second access mode, comprising: and switching the first MAC module and the first optical module from the first access mode to the second access mode.

In one possible design, the OLT includes a second communication sub-module and a detection sub-module; the second communication sub-module supports a first access mode, and the detection sub-module supports a second access mode; switching the OLT from the first access mode to the second access mode includes: and switching the communication between the second communication sub-module and the plurality of ONTs into the communication between the detection sub-module and the plurality of ONTs.

In one possible design, the OLT further comprises a switch (such as a first switch, a second switch, or a third switch); switching the second communication sub-module to communicate with the plurality of ONTs to the detection sub-module to communicate with the plurality of ONTs, comprising: and switching the communication between the second communication sub-module and the ONTs through the switcher into the communication between the detection sub-module and the ONTs.

In a third aspect, the present application provides a computer readable storage medium having stored therein a computer program or instructions which, when executed by an OLT, cause the OLT to perform the method of the second aspect or any of the possible implementations of the second aspect.

In a fourth aspect, the application provides a computer program product comprising a computer program or instructions which, when executed by an OLT, cause the OLT to perform the method of the second aspect or any of the possible implementations of the second aspect.

The technical effects achieved by any one of the second aspect to the fourth aspect may be referred to the description of the beneficial effects in the first aspect, and the detailed description is not repeated here.

Drawings

Fig. 1 is a schematic diagram of an optical communication system architecture according to an embodiment of the present application;

FIG. 2 is a schematic diagram of another optical communication system according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a first possible optical communication apparatus according to an embodiment of the present application;

FIG. 4A is a schematic diagram of a second possible optical communication apparatus according to an embodiment of the present application;

FIG. 4B is a schematic diagram of a third possible optical communication apparatus according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a fourth possible optical communication apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a fifth possible optical communication apparatus according to an embodiment of the present application;

FIG. 7A is a schematic diagram of a sixth possible optical communication apparatus according to an embodiment of the present application;

fig. 7B is a schematic structural diagram of a seventh possible optical communication apparatus according to an embodiment of the present application;

FIG. 7C is a schematic diagram of an eighth possible optical communication apparatus according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a ninth possible optical communication apparatus according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a tenth possible optical communication apparatus according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of an eleventh possible optical communication apparatus according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a twelfth possible optical communication apparatus according to an embodiment of the present application;

FIG. 12 is a schematic view of a thirteenth possible optical communication device according to an embodiment of the application;

FIG. 13 is a schematic structural diagram of a fourteenth possible optical communication device according to an embodiment of the present application;

Fig. 14 is a schematic structural diagram of a fifteenth possible optical communication device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a sixteenth possible optical communication apparatus according to an embodiment of the present application;

FIG. 16A is a schematic diagram of a seventeenth possible optical communication apparatus according to an embodiment of the present application;

FIG. 16B is a schematic diagram of an eighteenth possible optical communication apparatus according to an embodiment of the present application;

Fig. 17 is a schematic diagram of a possible method for detecting a rogue optical network terminal according to an embodiment of the present application.

Detailed Description

The embodiment of the invention can be applied to an optical communication system, and the optical communication system can be a TDM PON system. The TDM PON system may be a gigabit passive optical network (gigabit-capable PON) system, an Ethernet Passive Optical Network (EPON) system, a 10G ethernet passive optical network (10G-EPON) system, a 10G-bit passive optical network (10 gigabit-capable passive optical network, XG-PON) system, or a 10G-bit symmetric passive optical network (10-gigabit-capable SYMMETRIC PASSIVE optical network, XGs-PON) system, or the like. The TDM PON system is a point-to-multipoint (point 2multiple point,P2MP) system.

As an example, the optical communication system includes at least an OLT and a plurality of ONTs, and the OLT communicates with the plurality of ONTs respectively. The optical communication system in the embodiment of the present application may also include an OLT and a plurality of ONUs, where the OLT communicates with the plurality of ONUs, and the embodiment of the present application is not specifically limited, and the ONT will be described later as an example. Referring to fig. 1, the OLT communicates with n ONTs through optical splitters. In fig. 1, n ONTs are ONT1, ONT2, … …, and ONTn, respectively. Each ONT emits light, or is described as transmitting an optical signal, on a designated time slot allocated by the OLT.

If an optical signal is sent by an ONT on a time slot that does not emit light, the time slots are originally allocated to other ONTs, so that the ONT can generate uplink optical conflict with other ONTs, thereby affecting the normal communication between other ONTs and the OLT, and causing error codes or dropped lines.

In one possible scenario, for example, see fig. 2, an access point-to-point (P2P) ONT or a P2P customer premise equipment (customer premise equipment, CPE) or an ethernet CPE is caused by a malfunction on a certain fiber of an optical splitter of the TDM PON. In the following description, a P2P ONT will be described as an example. The P2P ONT is always in a light emitting state, so that uplink optical conflict can be generated with other ONTs, normal communication between the other ONTs and the OLT is affected, and error code or disconnection can occur. An ONT that affects normal communications of other ONTs is generally referred to as a rogue ONT. In order to reduce the service interruption time, a rogue ONT needs to be diagnosed and identified quickly.

The diagnostic procedure may include the following processes: detection, investigation and isolation.

1) And (3) detection: to determine whether a rogue ONT is present in the current optical communication system.

The specific detection method can comprise the following steps: the OLT stops dynamic bandwidth allocation (dynamic bandwidth assignment, DBA) for each ONT, and causes all ONTs to stop emitting light. The OLT then detects whether light is received, and if so, indicates that a rogue ONT is present. Detecting whether light is received may include, but is not limited to, detecting the presence of a no light signal, detecting the magnitude of the light power, and the like.

2) Checking: to investigate which ONT is the rogue ONT.

The specific investigation method can comprise the following steps: all ONTs are informed to turn off the laser transmitter power through PON protocol. When all the ONTs are powered off the laser transmitter, the OLT detects whether a rogue ONT phenomenon exists, i.e., whether light is detected, and if so, determines that an uncontrolled rogue ONT is included in the optical communication system, such as a P2P ONT.

If the OLT detects that the rogue ONT phenomenon does not exist, the OLT indicates that all ONTs under the PON port are controlled ONTs, then instructs the ONTs to turn on the laser power supply one by one, but still does not allocate bandwidth, the detection is that the rogue ONT phenomenon exists, if the OLT detects that the ONT is normal, and if the OLT does not have the rogue OTN phenomenon, the ONT is rogue ONT.

3) Isolation: to notify the identified rogue ONT to permanently turn off the laser transmitter power.

The OLT or the network management device can issue a control instruction to the rogue ONT to turn off the laser transmitter power supply of the ONT, thereby eliminating the influence of the rogue ONT on other ONTs under the PON port.

Since the uncontrolled rogue ONT cannot turn off the laser transmitter under the control of the OLT, it cannot be checked which ONT is the uncontrolled rogue ONT, affecting the uplink traffic transmissions of the other ONTs. There is currently no viable way to detect and determine uncontrolled rogue ONTs.

Based on the above, the embodiment of the application provides a method, a device and a system for detecting a rogue optical network terminal, which are used for detecting uncontrolled rogue ONTs and eliminating the uplink influence of the rogue ONTs on other ONTs. The method, the device and the system are based on the same inventive concept, and because the principles of solving the problems by the method, the device and the system are similar, the implementation of the system, the device and the method can be mutually referred to, and the repetition is not repeated.

Before describing the scheme provided by the embodiment of the application in detail, technical terms related to the application are described.

(1) Access modes may include gigabit ethernet (gigabit ethernet, GE) mode, GPON mode, EPON mode, XGE mode, XGPON mode, XG-EPON mode, and the like.

(2) Multimode chips, the access modes that can be supported by multimode chips include a variety of modes, such as supporting in GE mode, GPON mode, or EPON mode, etc. The multimode chip may include multimode Media Access Control (MAC) or the like. As an example, a MAC chip may be used to codec information to be transmitted.

(3) An optical module. The optical module may support one access mode or a plurality of access modes. For convenience of description, an optical module supporting multiple access modes is referred to as a multimode optical module, and an optical module supporting one access mode is referred to as a single-mode optical module in the embodiments of the present application. Multimode optical modules, for example, support in GE mode, GPON mode, EPON mode, or the like.

The optical module may be used for performing optical-to-electrical conversion, such as converting an encoded electrical signal from a MAC chip into an optical signal, and for example, converting a received optical signal into an electrical signal.

In the embodiment of the application, the optical module can comprise a transmitter and a receiver, and the optical module can be connected with the processing module. For example, as follows, the processing module may communicate with the micro control unit 10 (microcontroller unit, MCU) inside the optical module through the I2C interface, and read the optical module information (for example, static information including the optical module type, serial Number (SN), etc., and monitoring information of the optical module voltage, temperature, transmitted optical power, received optical power, etc.). As another example, the processing module may control whether the transmitter of the optical module is operating and in which access mode it is operating by sending an enable signal. For another example, the processing module may obtain the working states of the transmitter and the receiver of the optical module through the indication signal and the I2C interface.

(4) The plural number of the present application means two or more. In addition, it should be understood that in the description of the present application, the words "first," "second," and the like are used merely for distinguishing between the descriptions and not for indicating or implying any relative importance or order.

(5) The processing module involved in the embodiments of the present application may include one or more of a central processing unit (central process unit, CPU), a general purpose processor, a digital signal processor (DIGITAL SIGNAL processing, DSP), an Application Specific Integrated Circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc.

The following describes the scheme provided by the embodiment of the application in detail with reference to the accompanying drawings.

The optical communication device provided by the embodiment of the application can be an OLT or a chip system applied to the OLT. The OLT belongs to an optical communication system, and the optical communication system further includes a plurality of ONTs connected to the OLT through an optical fiber or an optical splitter, and in the embodiment of the present application, the OLT includes n non-rogue ONTs and one uncontrolled rogue ONT, for example, a P2P ONT, or a P2P CPE or an ethernet CPE. In the following description, an uncontrolled rogue ONT is exemplified as a P2P ONT.

Referring to fig. 3, a schematic diagram of one possible optical communication device is shown. The optical communication device comprises a processing module and a communication module. In the following description, an OLT is taken as an example of an optical communication device. It should be understood that the optical communication device shown in fig. 3 is only one example. The optical communication apparatus in the present application may have more devices than the optical communication apparatus of fig. 3.

The processing module switches the communication module from the first access mode to the second access mode when there is an uncontrolled rogue one of the plurality of ONTs. The rogue ONT that is uncontrolled (or uncontrolled) at this time may be: when the communication module works in the first access mode, the rogue ONT which is connected with the communication module and cannot execute the command sent by the communication module can not be executed. The command that the uncontrolled rogue ONT cannot execute the communication module may be an optical signal that does not support parsing the OLT transmissions, or a command that supports parsing but cannot execute the specific command.

Further, the processing module determines that the first ONT is an uncontrolled rogue ONT when establishing a communication connection with the first ONT when determining that the communication module is operating in the second access mode; when the communication module works in the first access mode, other ONTs (namely n ONTs) except for the uncontrollable rogue ONT in the ONTs connected with the communication module can be connected with the communication module in a communication mode, and when the communication module works in the second access mode, other ONTs except for the uncontrollable rogue ONT in the ONTs connected with the communication module cannot be connected with the communication module in a communication mode.

It should be noted that, when the communication module operates in the first access mode, the ONTs (i.e., n ONTs) other than the uncontrollable rogue ONT among the ONTs connected to the communication module can establish a communication connection with the communication module, which can also be understood as: other ONTs than the uncontrolled rogue ONT support operate in the first access mode and thus have the ability to establish a communication connection with the communication module.

In addition, it should be appreciated that in the event that there is an uncontrolled rogue ONT, the communication module is operating in the first access mode, the communication module is able to establish connections with other ONTs other than the uncontrolled rogue ONT, possibly with normal downstream transmissions, but the uncontrolled rogue ONT may have an impact on the upstream transmissions of the other ONTs.

The structure of the communication module shown in fig. 3 is described below in connection with specific embodiments to give an exemplary implementation.

Implementation 1:

one or more communication sub-modules may be included in the communication module. The one or more communication sub-modules support a plurality of access modes.

In one possible example, referring to fig. 4A, the communication module includes a communication sub-module, which is referred to as a first communication sub-module as an example. The first communication sub-module supports a plurality of access modes, such as a first access mode and a second access mode. The first access mode and the second access mode are two different access modes. For example, the first access mode is GPON and the second access mode is GE mode. The first communication sub-module supports a plurality of access modes.

The processing module controls the first communication sub-module to switch from the first access mode to the second access mode upon determining that an uncontrolled rogue one of the plurality of ONTs is present. The first communication sub-module operates in a first access mode, and the first communication sub-module can be connected with the plurality of ONTs through an optical port, so that whether uncontrolled rogue ONTs exist can be determined. When it is determined that an uncontrolled rogue ONT exists, further, when the first communication sub-module switches to the second access mode, in the process of establishing a communication connection with the first ONT through the optical port, identification information of the first ONT may be acquired, where the identification information of the first ONT is used to identify an identity of the first ONT, for example, the identification information of the first ONT may include a MAC address of the first ONT.

It should be understood that the first communication sub-module operates in the first access mode, and it may be understood that the processing module controls the first communication sub-module so that the first communication sub-module outputs the optical signal of the first communication protocol through the optical port. The first communication sub-module works in the second access mode, which can be understood that the processing module controls the first communication sub-module to enable the first communication sub-module to output the optical signal of the second communication protocol through the optical port.

It should be noted that, when the first communication sub-module is operated in the second access mode, that is, when the optical port outputs the optical signal of the second communication protocol, all the ONTs except for the uncontrollable rogue ONT in the plurality of ONTs connected to the optical port cannot normally operate, or it may be described that all the ONTs except for the uncontrollable rogue ONT in the plurality of ONTs connected to the optical port cannot normally communicate with the first communication sub-module when the first communication sub-module is operated in the second access mode. It will be appreciated that none of the plurality of ONTs connected by the optical port, except for the uncontrolled rogue ONT, is capable of resolving the optical signals of the second communication protocol.

For example, the first access mode is a GPON mode and the second access mode is a GE mode. In the GPON mode, the first communication submodule outputs an optical signal of a GPON protocol through an optical port, and in the GE mode, the first communication submodule outputs an optical signal of a GE protocol through the optical port. The access mode of the non-rogue ONT may be a GPON mode, while the access mode employed by the uncontrolled rogue ONT is a GE mode. When the communication module adopts the GE mode, the ONT adopting the GPON mode cannot normally communicate with the communication module. And when the GE mode is adopted by the communication module, the uncontrolled rogue ONT can normally communicate with the communication module.

Alternatively, the processing module may send the identification information of the first ONT to the network management device through an interface connected to the network management device. After receiving the identification information of the first ONT, the network management device may determine, according to information stored in the network database, a customer name, a customer address, a customer contact address, or a corresponding connected branch optical fiber to which the identification information of the first ONT corresponds. Further, when the network management device obtains information such as a customer name, a customer address, a customer contact address, or a corresponding connected branch optical fiber to which the uncontrolled rogue ONT belongs, the network management device may notify the customer to remove the uncontrolled rogue ONT or disconnect the connection with the branch optical fiber, such as unplug the branch optical fiber. In some embodiments, the network management device may perform a software upgrade on the uncontrolled rogue ONT, after which the uncontrolled rogue ONT may be controlled by the OLT. The network management device or OLT (in the case where the first communication sub-module operates in the second access mode) sends indication information to the rogue ONT for indicating the rogue ONT to send an optical signal after correctly resolving the downstream optical signal from the OLT. Since the access mode of the rogue ONT is different from the access mode of the normal operation of the first communication sub-module connected to the OLT, i.e. the communication protocol adopted by the rogue ONT is different from the communication protocol adopted by the first communication sub-module connected to the OLT. Therefore, the rogue ONT can not analyze the optical signal from the OLT, and can not emit light any more, so that the signal transmission of other ONTs is affected.

In some embodiments of the present application, the processing module can determine that an uncontrolled rogue ONT is present in the optical communication system by:

The processing module sends a control signal to the first communication sub-module, wherein the control signal is used for indicating the first communication sub-module to send a first notification message through the optical port by adopting a first communication protocol. Or may be described as a control signal for instructing the first communication sub-module to inform an ONT connected to the optical port to turn off the laser transmitter. The first notification message is used for notifying the turn-off laser transmitter of the ONT connected with the optical port. Specifically, the processing module may send the control signal to the first communication sub-module when the first communication sub-module is operating in the first access mode. The first communication sub-module sends a first notification message to each ONT after receiving the control signal. After each ONT connected with the optical port turns off the laser transmitter, the optical signals cannot be transmitted. If there is an uncontrolled rogue ONT in the ONTs connected to the optical port, the uncontrolled rogue ONT cannot receive the first notification message or cannot parse the first notification message, and thus continues to transmit the optical signal. Further, the processing module determines that an uncontrolled rogue ONT exists among the ONTs connected to the optical port upon determining that the first communication sub-module receives the optical signal.

In some embodiments of the present application, the first communication sub-module may include a first MAC module and a first optical module therein. See, for example, fig. 4B. The first MAC module and the first optical module both support a first access mode and a second access mode. The first MAC module may be a multimode MAC chip. It should be noted that, the first MAC module and the first optical module may support other access modes on the basis of supporting the first access mode and the second access mode.

The first communication sub-module operates in a first access mode, the first MAC module operates in the first access mode, and the first optical module also operates in the first access mode. That is, the first MAC module operates in the first access mode, i.e., the first MAC complies with the first communication protocol when performing the codec operation, and the first optical module operates in the first access mode, i.e., the first optical module complies with the first communication protocol when performing the photoelectric conversion.

The first communication sub-module operates in a second access mode, the first MAC module operates in the second access mode, and the second optical module operates in the second access mode. That is, the first MAC module operates in the second access mode, i.e., the first MAC complies with the second communication protocol when performing the codec operation, and the first optical module operates in the second access mode, i.e., the first optical module complies with the second communication protocol when performing the photoelectric conversion.

In another possible example, the communication module may include N communication sub-modules within the first communication sub-module, i.e. the OLT includes N communication sub-modules, where the N communication sub-modules include the first communication sub-module. N is an integer greater than 1. It should be appreciated that different communication sub-modules are used to communicate with different ONTs through different optical ports. For example, the OLT includes a communication sub-module 1-a communication sub-module N, where the first communication sub-module is any one of the communication sub-module 1-the communication sub-module N, and different communication modules correspond to different optical interfaces. Each communication sub-module may include a MAC module and an optical module. As an example, both the MAC module and the optical module may support multiple access modes, as shown in fig. 5. As an example, the optical ports corresponding to different communication sub-modules are respectively referred to as optical port 1-optical port N. The OLT may detect whether a rogue ONT exists in any one of the ONTs connected to the optical port, and specifically may use a method for detecting whether a rogue ONT exists in the ONTs connected to the optical port. For example, when it is required to detect a rogue ONT with respect to an ONT connected to the optical port 1, the processing module may switch the multimode MAC1 and the multimode optical module 1 from operating in the first access mode to the second access mode when it is determined that an uncontrolled rogue ONT exists in the ONT connected to the optical port 1, so that the ONT1-ONTn connected to the optical port 1 cannot establish a communication connection with the OLT, and the uncontrolled rogue ONT (for example, the P2P ONT) can establish a communication connection with the OLT in the second access mode, so that in the process of establishing a communication connection with the P2P ONT, the MAC address of the P2P ONT can be acquired, and further, the network management device may be notified of the MAC address, so as to notify the network administrator of determining, according to the MAC address, the name of the customer to which the uncontrolled rogue ONT belongs, the customer address, the customer contact or the corresponding branch optical fiber connected. Further, when the network management device obtains information such as a customer name, a customer address, a customer contact address, or a corresponding connected branch optical fiber to which the uncontrolled rogue ONT belongs, the network management device may notify the customer to remove the uncontrolled rogue ONT or disconnect the connection with the branch optical fiber, such as unplug the branch optical fiber. For another example, it is necessary to perform rogue ONT detection with respect to the ONT connected to the optical port N, and when it is determined that an uncontrolled rogue ONT exists in the ONT connected to the optical port N, the multimode MAC N and the multimode optical module N may be switched from operating in the first access mode to the second access mode, so as to determine an uncontrolled rogue ONT in the ONT connected to the optical port N.

Implementation 2:

The communication module in the optical communication device may include a second communication sub-module and a detection sub-module, as shown in fig. 6. When the processing module needs to switch the communication module from the first access mode to the second access mode, the communication between the second communication sub-module and the ONTs is switched to the communication between the detection sub-module and the ONTs. Under the condition that the second communication sub-module is communicated with a plurality of ONTs, the second communication sub-module works in a first access mode, the detection sub-module is disconnected from the plurality of ONTs, and other ONTs except for uncontrolled rogue ONTs in the plurality of ONTs can be in communication connection with the second communication sub-module; under the condition that the detection submodule is communicated with a plurality of ONTs, the second communication submodule is disconnected from the plurality of ONTs, the detection submodule works in a second access mode, and other ONTs except for uncontrolled rogue ONTs in the plurality of ONTs cannot establish communication connection with the detection submodule.

It should be noted that, a plurality of ONTs are connected to the OLT through one optical splitter.

In a first possible implementation manner, the detection sub-module and the second communication sub-module may pass through different optical ports when establishing communication connection with the plurality of ONTs, respectively.

For example, the second communication sub-module is connected with the first optical port, and the detection sub-module is connected with the second optical port.

The processing module determines that uncontrolled rogue ONTs exist in the ONTs connected with the first optical port; wherein an uncontrolled rogue ONT can be interpreted as: when the second communication sub-module works in the first access mode, the rogue ONT of the optical signal sent by the second communication sub-module cannot be analyzed in the ONT connected with the second communication sub-module. And the processing module determines that the first ONT is an uncontrolled rogue ONT when determining that the detection submodule establishes communication connection with the first ONT through the second optical port under the condition that the optical fiber for connecting the ONT is detected to be connected with the second optical port.

Under the condition that the optical fiber is communicated with the first optical port, referring to fig. 7A, the second communication sub-module works in a first access mode, the detection sub-module is disconnected from the plurality of ONTs, and other ONTs except for an uncontrolled rogue ONT in the ONTs connected with the first optical port can be in communication connection with the second communication sub-module; in the case where the optical fiber is connected to the second optical port, as shown in fig. 7B, the second communication sub-module is disconnected from the plurality of ONTs, and the detection sub-module operates in the second access mode, so that the detection sub-module cannot be connected to any other ONTs except for the uncontrollable rogue ONT among the ONTs connected to the second optical port.

In some embodiments, switching the optical fiber to the first optical port connection to the optical fiber to the second optical port connection may be accomplished by manual plugging.

As an example, the second communication sub-module and the detection sub-module comprise a MAC module and an optical module, respectively. For convenience of distinction, in this embodiment, the MAC module included in the second communication sub-module is referred to as a second MAC module, the optical module is referred to as a second optical module, the MAC module included in the detection sub-module is referred to as a third MAC module, and the optical module included in the detection sub-module is referred to as a third optical module.

The MAC module and the optical module in the second communication sub-module may support one access mode or multiple access modes, or the MAC module and the optical module in the second communication sub-module may support one communication protocol or multiple communication protocols. The MAC module and the optical module included in the detection sub-module may support one access mode or multiple access modes, or the MAC module and the optical module in the detection sub-module may support one communication protocol or multiple communication protocols. Referring to fig. 7C, an example is shown in which the detection submodule includes a GE light module and a GE MAC module. The first communication submodule includes a GPON MAC module and a GPON optical module as an example.

When the second communication sub-module and the detection sub-module support only one access mode, the connection relation between the first optical port or the second optical port and the optical fiber can be switched to execute the switching of the access mode, so that the identification information of the uncontrolled rogue ONT can be further obtained. When the detection sub-module supports multiple access modes, the processing module can further switch the detection sub-module into an access mode adopted by the uncontrolled rogue ONT when the processing module is switched to the connection of the first optical port and the optical fiber or the detection sub-module is switched to the connection of the detection sub-module and the multiple ONTs through the optical fiber, so that the detection sub-module can establish communication connection with the uncontrolled rogue ONT. It should be appreciated that the processing module can determine the access mode employed by the non-rogue ONT, and upon uncertainty of the access mode employed by the uncontrolled rogue ONT, can obtain the identification information of the uncontrolled rogue ONT by attempting to switch in multiple access modes (excluding the access mode employed by the non-rogue ONT) until a communication connection is established with the uncontrolled rogue ONT in the second access mode.

In some embodiments, the communication module may include a plurality of communication sub-modules including the second communication sub-module. It should be appreciated that different communication sub-modules are used to communicate with different ONTs through different optical ports. For example, the OLT includes a communication sub-module P1-communication sub-module PN, where the first communication sub-module is any one of the communication sub-modules P1-communication sub-module PN, and different communication modules correspond to different optical ports, as shown in fig. 8. Each communication sub-module may include a MAC module and an optical module. As an example, the optical ports corresponding to different communication sub-modules are respectively referred to as optical ports P1-PN. The OLT may detect whether a rogue ONT exists in any one of the ONTs connected to the optical port, and specifically may use a method for detecting whether a rogue ONT exists in the ONTs connected to the optical port. For example, it is necessary to perform rogue ONT detection on the ONTs connected to the optical port P1, and the optical fiber connected to the optical port P1 may be switched to the first optical port by means of manual plugging, so as to determine which one of the ONTs connected to the optical port P1 is the uncontrolled rogue ONT.

In a second possible implementation manner, when the detection sub-module and the second communication sub-module respectively establish communication connection with the plurality of ONTs, the detection sub-module and the second communication sub-module pass through the same optical port.

For example, both the detection sub-module and the second communication sub-module may establish communication connection with a plurality of ONTs through the optical port L1. The plurality of ONTs are connected to the optical port L1 by optical fibers. It should be noted that, when the detection sub-module uses the optical port L1 to establish communication connection with the plurality of ONTs, the second communication sub-module cannot use the optical port L1 to establish communication connection with the plurality of ONTs, or when the second communication sub-module uses the optical port L1 to establish communication connection with the plurality of ONTs, the detection sub-module cannot use the optical port L1 to establish communication connection with the plurality of ONTs.

The second communication sub-module at least supports a first access mode, and the detection sub-module at least supports a second access mode; in some embodiments, the second communication sub-module may support multiple access modes, or may support only one access mode, which is not particularly limited by the embodiment of the present application. The detection sub-module may also support multiple access modules or only one access mode. The detection sub-module is used to detect which ONT is an uncontrolled rogue ONT. The first communication sub-module is used for transmitting optical signals of service between the optical port L1 and the plurality of ONTs under the condition of communicating with the optical port L1 on the OLT.

When the processing module needs to be switched from the first access mode to the second access mode, the communication between the second communication sub-module and the optical port L1 can be switched to the communication between the detection sub-module and the optical port L1. This can be achieved by providing a switch in the communication module.

The structure of the switch and the connection relationship in the communication module are explained below.

In a first possible implementation, the communication module may include a first switch. The first switch is respectively connected with the detection sub-module, the optical port L1 and the first communication sub-module and is used for switching the communication relation between the second communication sub-module and the detection sub-module and the optical port L1. The first switch is an optical switch.

The second communication sub-module comprises a MAC module 11 and an optical module 11. The MAC module 11 and the optical module 11 support at least a first access mode. The detection submodule comprises a Media Access Control (MAC) module supporting a second access mode and an optical module, wherein in fig. 9, the second access mode is taken as a GE mode as an example, the MAC module supporting the second access mode is a GE MAC module, and the optical module supporting the second access mode is a GE optical module.

The processing module controls the second communication sub-module to disconnect from the optical port L1 and the detection sub-module to communicate with the optical port L1 when it is determined that an uncontrolled rogue ONT exists in the ONTs connected with the second communication sub-module. Specifically, the processing module may control the first switch to disconnect the second communication sub-module from the optical port L1, and connect the detection sub-module to the optical port L1. The processing module determines that the first ONT is an uncontrolled rogue ONT when determining that the detection submodule establishes communication connection with the first ONT through the optical port L1. In the process that the detection sub-module establishes communication connection with the first ONT through the optical port L1, the processing module may acquire the identification information, such as the MAC address, of the uncontrolled rogue ONT.

Under the condition that the second communication sub-module is communicated with the first optical port, the second communication sub-module works in a first access mode, the detection sub-module is disconnected from the plurality of ONTs (or the first optical port), and other ONTs except for the uncontrollable rogue ONT in the ONTs connected with the first optical port can be in communication connection with the second communication sub-module; under the condition that the detection submodule is communicated with the first optical port, the second communication submodule is disconnected from the plurality of ONTs (or the detection submodule is connected with the first optical port), the detection submodule works in a second access mode, and other ONTs except for uncontrolled rogue ONTs in the ONTs connected with the first optical port cannot be in communication connection with the detection submodule.

In some embodiments of the present application, where the second communication sub-module is in communication with the optical port L1, the second communication sub-module operates in the first access mode when the detection sub-module is out of communication with the plurality of ONTs (or with the optical port L1). Under the condition that the detection submodule is communicated with the optical port L1, the detection submodule works in a second access mode, and at the moment, the second communication submodule is disconnected from the plurality of ONTs (or the optical port L1).

In some embodiments of the present application, when the second communication sub-module supports multiple access modes, in which access mode the second communication sub-module is located may be controlled by the processing module. For example, the processing module sends a control signal 1 to the second communication sub-module, where the control signal 1 is used to control the second communication sub-module to be in the first access mode. When the detection submodule supports multiple access modes, the processing module can also control which access mode the detection submodule works in. For example, the processing module sends a control signal 2 to the detection submodule, where the control signal 2 is used to control the detection submodule to be in the second access mode.

In one possible embodiment, the communication module includes not only one communication sub-module, i.e., the communication module includes not only the second communication sub-module, but may include a plurality of communication sub-modules, for example, N is an integer greater than 1.

Different communication sub-modules communicate with different optical ports, and thus can communicate with different ONTs through different gateways. It should be noted that different optical ports may be connected to one or more ONTs, and thus, one communication sub-module may communicate with a plurality of ONTs through one optical port. Each communication sub-module may comprise a MAC module and an optical module, see fig. 10 for a MAC module L1-MAC module LN and an optical module L1-optical module LN, respectively. The detection sub-module may include a MAC module and an optical module. In fig. 10, the MAC module included in the detection sub-module is exemplified by the GE MAC module, and the optical module included in the detection sub-module is exemplified by the GE optical module. When the ONT connected with the optical port L1 is required to be detected, the processing module controls the first switcher to enable the optical module L1-optical module LN to be communicated with the corresponding optical port, namely, the optical paths corresponding to the optical port L1-optical port LN are in a normal working state. Further, upon detecting the presence of an uncontrolled rogue ONT, the processing module may control the first switch such that the optical module L1 is disconnected from the optical port L1 and such that the GE optical module is in communication with the optical port L1. Under the condition that the optical module L1 is communicated with the optical port L1, the optical module L1 and the MAC module L1 both work in a first access mode, and at the moment, the GE optical module and the GE MAC module are disconnected from the plurality of ONTs (or the optical port L1). And when the GE optical module is communicated with the optical port L1, the GE MAC module and the GE optical module work in a second access mode, and at the moment, the MAC module L1 and the optical module L1 are disconnected from the plurality of ONTs (or the optical port L1).

As an example, referring to fig. 11, a first access mode is a GPON mode, and a second access mode is a GE mode. The uncontrollable rogue ONT present in the ONT connected to the optical port L1 is a P2P ONT. The access mode of the P2P ONT is a GE mode. In the event that it is determined that the ONT to which the optical port L1 is connected includes an uncontrolled rogue ONT, the processing module may control the first switch such that the GE optical module is in communication with the optical port L1 and the GPON optical module 1 is disconnected from the optical port L1. When the detection operation is not performed, the GE optical module and the GE MAC module are disconnected from the plurality of ONTs (or from the optical port L1).

In a possible implementation, in case the OLT comprises only one optical port, for example the OLT structure is shown with reference to fig. 9. The first switch may be a 1×2 optical switch, where the 1×2 optical switch includes an input terminal, a first output terminal, and a second output terminal, as shown in fig. 12; the input end is connected with the optical port L1, the first output end is connected with the optical module L1, and the second output end is connected with the GE optical module; the input end is communicated with the first output end, so that the optical module L1 is communicated with the optical port L1, and the OLT can normally communicate with the ONT 1-ONTn; the input end is communicated with the GE optical module, so that the GE optical module is communicated with the optical port L1, and the OLT can detect the P2P ONT.

In another possible implementation, where the OLT includes a plurality of optical ports, such as the OLT structure is shown with reference to fig. 10. The first switch includes 1×n optical switches and N1×2 optical switches in one-to-one correspondence with the N communication sub-modules. In connection with the OLT structure shown in fig. 10, the first switch may include 1×n optical switches and N1×2 optical switches corresponding to the optical modules 1-N one by one. The 1 x N optical switch comprises an input end and N output ends, and the 1 x 2 optical switch comprises an input end, a first output end and a second output end; each first output end of the N1 multiplied by 2 optical switches is respectively connected with a corresponding optical module; n second output ends in the N1X 2 optical switches are connected with N output ends of the 1X N optical switches in a one-to-one correspondence manner; the input ends of the N1X 2 optical switches are connected with the N optical ports in a one-to-one correspondence manner; the input end of the 1 XN optical switch is connected with the GE optical module. The N outputs of the 1 xn optical switch are represented in fig. 13 by CH 1-CH N, respectively. Taking the detection optical port L1 as an example, an input end in the 1×n optical switches is connected with CH 1 of N output ends, and an input end of the 1×2 optical switch corresponding to the optical module 1 in the N1×2 optical switches is connected with a second output end, so that the optical port L1 outputs an optical signal of the GE communication protocol; the input end of the 1×2 optical switch connected with the optical port L1 in the N1×2 optical switches is connected with the first output end, so that the optical port L1 outputs an optical signal of the first communication protocol, that is, the MAC module 1 and the optical module 1 normally operate in the first access mode.

In a second possible implementation, the communication module may include a second switch. When the processing module needs to be switched from the first access mode to the second access mode, the communication between the second communication sub-module and the optical port 1 can be switched to the communication between the detection sub-module and the optical port 1. May be implemented by a second switch in the communication module. The second switch is an electrical switch. Referring to fig. 14, another possible optical communication apparatus according to an embodiment of the present application is shown. The OLT includes a processing module, a fourth MAC module that supports at least a first access mode, a fifth MAC module that supports at least a second access mode, and a fourth optical module that supports at least the first access mode and the second access mode. The second switch is disposed between the MAC module and the optical module included in the second communication sub-module, and in the embodiment corresponding to fig. 14, the detection sub-module includes only 1 MAC module, and does not include the optical module, and the optical module in the second communication sub-module is used in communication. In the scenario of fig. 14, the optical module suitable for optical port connection is a multimode optical module.

In fig. 14, taking the second access mode as the GE mode as an example, at least the fifth MAC module supporting the second access mode is the GE MAC module.

One end of the fourth MAC module is connected with the processing module, the other end of the fourth MAC module is connected with the first terminal of the first switcher, the second terminal of the first switcher is connected with the multimode optical module, and the third terminal of the first switcher is connected with the GE MAC module.

Under the condition that the first terminal is communicated with the second terminal, the fourth MAC module and the multimode optical module work in a first access mode, namely the fourth MAC module is communicated with the multimode optical module, and the multimode optical module works in the first access mode, so that an optical signal of a first communication protocol is output through the optical port 1. Under the condition that the second terminal is communicated with the third terminal, the GE MAC module and the multimode optical module work in a second access mode, namely the GE MAC module is communicated with the multimode optical module, and the multimode optical module works in the second access mode, so that an optical signal of a GE communication protocol is input through the optical port 1.

As an example, the second switch is a1×2 electrical switch, the 1×2 electrical switch comprising an input, a first output, and a second output; the second terminal is used as an input end, the first terminal is used as a first output end, and the third terminal is used as a second output end. See fig. 15.

In a third possible implementation, the communication module may include a plurality of communication sub-modules including the second communication sub-module. For example, a plurality of communication sub-modules may be included, such as N, where N is an integer greater than 1. Different communication sub-modules communicate with different optical ports and thus may communicate with different ONTs. It should be noted that different optical ports may be connected to one or more ONTs, and thus, one communication sub-module may communicate with a plurality of ONTs through one optical port. Each communication sub-module may comprise a MAC module and a multimode optical module, respectively a MAC module K1-MAC module KN, a multimode optical module K1-multimode optical module KN. The detection submodule comprises a MAC module KN+1. The communication module further comprises a third switcher. The third switch is an electrical switch. A third switch is disposed between the MAC and the multimode optical module, as shown in fig. 16A. Take the uncontrolled rogue ONT of the detection of the optical port K1 connection as an example. When the processing module needs to switch the communication module from the first access mode to the second access mode, the communication between the MAC module K1 and the multimode optical module K1 can be switched to the communication between the MAC module KN+1 and the optical port K1. The third switch may be an electrical switch. In fig. 16A, the MAC module kn+1 is exemplified as a GE MAC module.

As an example, referring to fig. 16B, the third switch may include 1×n electrical switches and N1×2 electrical switches; the 1 x N electrical switch includes an input and N outputs, and the 1 x 2 electrical switch includes an input, a first output, and a second output.

N first output ends of the N1 multiplied by 2 electric switches are connected with the MAC modules K1-KN in a one-to-one correspondence manner; n second output ends in the N1X 2 electric switches are connected with N output ends of the 1X N electric switches in a one-to-one correspondence manner; n outputs are represented by CH1-CH N in FIG. 16B. The input ends of the N1 multiplied by 2 electric switches are respectively connected with the N multimode optical modules in a one-to-one correspondence manner; the input end of the 1 XN electric switch is connected with the GE MAC module;

The input end of the 1×2 electric switch corresponding to the multimode optical module K1 in the N1×2 electric switches is connected with the first output end, and the MAC module K1 and the multimode optical module K1 operate in the first access mode when the input end of the 1×n electric switch is connected with the CH 1 in the 1×n electric switch; the MAC module K1 and the multimode optical module K1 operate in the first access mode and may be controlled by the processing module.

And when the input end of the 1 multiplied by 2 electric switch corresponding to the multimode optical module K1 in the N1 multiplied by 2 electric switches is connected with the second output end, the GE MAC module and the multimode optical module K1 work in a second access mode. The operation of the multimode optical module K1 in the second access mode may be controlled by the processing module. The N1 x 2 electrical switches and which output the inputs of the 1 x N electrical switches are connected to can be controlled by a processing module.

Based on the above and the same concept, as shown in fig. 17, a flowchart of a method for detecting rogue ONT is provided in the present application. The method can be applied to the optical communication device of any of the above embodiments. The method comprises the following steps:

1701, when detecting that there is an uncontrolled rogue ONT among a plurality of ONTs connected to the OLT, switching the OLT from a first access mode to a second access mode;

Wherein the uncontrolled rogue ONT is: in the first access mode, a rogue one of the plurality of ONTs that cannot execute a command sent by the OLT;

1702, determining that the first ONT is an uncontrolled rogue ONT upon detecting that the OLT establishes a connection with the first ONT;

When the channel of the OLT for connecting the plurality of ONTs works in the first access mode, other ONTs except for the uncontrollable rogue ONT in the plurality of ONTs can be connected with the OLT in a communication mode, and when the communication module works in the second access mode, other ONTs except for the uncontrollable rogue ONT in the plurality of ONTs cannot be connected with the OLT in a communication mode.

In one possible implementation, the OLT includes a first communication sub-module that supports a first access mode and a second access mode;

Switching the OLT from a first access mode to a second access mode, comprising:

And switching the first communication sub-module from working in a first access mode to a second access mode.

In one possible implementation, the first communication sub-module includes a first media access control MAC module and a first optical module, the first MAC module supporting the first access mode and the second access mode, the first optical module supporting the first access mode and the second access mode;

switching the first communication sub-module from operating in a first access mode to a second access mode, comprising:

and switching the first MAC module and the first optical module from a first access mode to a second access mode.

In one possible implementation, the OLT includes a second communication sub-module and a detection sub-module; the second communication sub-module supports the first access mode, and the detection sub-module supports the second access mode;

Switching the OLT from a first access mode to a second access mode, comprising:

and switching the communication between the second communication sub-module and the ONTs into the communication between the detection sub-module and the ONTs.

In one possible implementation manner, the first optical port in the OLT is connected to the plurality of ONTs, and the switching between the second communication sub-module and the plurality of ONTs to the detection sub-module and the plurality of ONTs includes:

and switching the communication between the second communication sub-module and the first interface into the communication between the detection sub-module and the first interface.

In one possible implementation, the OLT further includes a switch; switching the second communication sub-module to communicate with the plurality of ONTs to the detection sub-module to communicate with the plurality of ONTs, comprising: and switching the communication between the second communication sub-module and the ONTs through the switcher to the communication between the detection sub-module and the ONTs.

The switch may be a first switch, a second switch, or a third switch.

In a possible implementation manner, the OLT includes a first switch, where the first switch is connected to the second communication sub-module, and the first switch is connected to the detection sub-module;

switching, by the switch, the second communication sub-module to communicate with the plurality of ONTs to the detection sub-module to communicate with the plurality of ONTs, including:

And the communication between the second communication sub-module and the first optical port is switched into the communication between the detection sub-module and the first optical port through the first switcher.

In one possible implementation manner, when the detection sub-module further supports other access modes except the second access mode, the first switch switches the communication between the second communication sub-module and the first optical port to the communication between the detection sub-module and the first optical port, and controls the detection sub-module to work in the second access mode, so that the OLT is switched from the first access mode to the second access mode.

In one possible implementation, the communication module further includes a second switch, the second switch including a first terminal, a second terminal, and a third terminal, the second communication sub-module including a fourth MAC module and a fourth optical module, the fourth MAC module and the fourth optical module supporting the first access mode, the fourth optical module further supporting a second access mode; the detection submodule comprises a fifth MAC module, and the fifth MAC module supports a second access mode;

One end of the fourth MAC is connected with the processing module, the other end of the fourth MAC is connected with the first terminal of the second switcher, the second terminal of the second switcher is connected with the fourth optical module, and the third terminal of the second switcher is connected with the fifth MAC module.

Switching the OLT from a first access mode to a second access mode, comprising:

And controlling the second switcher to switch the communication between the fourth MAC module and the fourth optical module to switch the communication between the fifth MAC module and the fourth optical module, and switching the fourth optical module from a first access mode to a second access mode.

In various embodiments of the application, where no special description or logic conflict exists, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments based on their inherent logic.

In the present application, the term "exemplary" is used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. It is to be understood that the terminology used in the description of the examples is intended to be in the nature of words of description rather than of limitation. The power of the optical signal in the present application may also be referred to as optical power.

It will be appreciated that the various numbers referred to in this disclosure are merely for ease of description and are not intended to limit the scope of embodiments of the application. The sequence number of each process does not mean the sequence of the execution sequence, and the execution sequence of each process should be determined according to the function and the internal logic. The terms "first," "second," and the like, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such as a series of steps or elements. The method, system, article, or apparatus is not necessarily limited to those explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus.

Although the application has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the application. Accordingly, the specification and drawings are merely exemplary of the arrangements defined in the appended claims and are to be construed as covering any and all modifications, variations, combinations, or equivalents that are within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims and the equivalents thereof, the present application is also intended to include such modifications and variations.

Claims

1. An optical communication device is characterized by being applied to an Optical Line Terminal (OLT), and comprises a processing module and a communication module;

The communication module is used for transmitting optical signals with a plurality of optical line terminals ONTs;

The processing module is used for switching the communication module from a first access mode to a second access mode when uncontrolled rogue ONTs exist in the plurality of ONTs;

wherein the uncontrolled rogue ONT is: when the communication module works in a first access mode, a rogue ONT which cannot execute a command sent by the communication module in ONTs connected with the communication module;

The processing module is further configured to determine that the first ONT is an uncontrolled rogue ONT when determining that the communication module is in communication connection with the first ONT when operating in the second access mode;

When the communication module works in a first access mode, other ONTs except for the uncontrollable rogue ONT in the ONTs connected with the communication module can establish communication connection with the communication module, and when the communication module works in a second access mode, other ONTs except for the uncontrollable rogue ONT in the ONTs connected with the communication module cannot establish communication connection with the communication module.

2. The apparatus of claim 1, wherein the communication module comprises a first communication sub-module that supports a first access mode and a second access mode.

3. The apparatus of claim 2, wherein the first communication sub-module comprises a first medium access control, MAC, module and a first optical module, the first MAC module coupled to the processing module, the first MAC module coupled to the first optical module;

The first MAC module supports the first access mode and the second access mode, and the first optical module supports the first access mode and the second access mode.

4. The apparatus of claim 1, wherein the communication module comprises a second communication sub-module and a detection sub-module;

The second communication sub-module supports the first access mode, and the detection sub-module supports the second access mode;

The processing module is specifically configured to switch, when the communication module needs to be switched from the first access mode to the second access mode, communication between the second communication sub-module and the plurality of ONTs to communication between the detection sub-module and the plurality of ONTs;

Wherein, in a case where the second communication sub-module is in communication with the plurality of ONTs, the second communication sub-module operates in a first access mode, and other ONTs of the plurality of ONTs except the uncontrolled rogue ONT are capable of establishing communication connection with the second communication sub-module; and under the condition that the detection submodule is communicated with the plurality of ONTs, the detection submodule works in a second access mode, and other ONTs except the uncontrollable rogue ONT in the plurality of ONTs cannot establish communication connection with the detection submodule.

5. The apparatus of claim 4, wherein the second communication sub-module is coupled to a first optical port and the detection sub-module is coupled to a second optical port;

the processing module is specifically configured to complete switching the communication module from the first access mode to the second access mode when detecting that the optical fibers used for connecting the plurality of ONTs are switched from connecting the first optical port to connecting the second optical port.

6. The apparatus of claim 5, wherein the processing module is specifically configured to switch communication between the second communication sub-module and the first optical port to communication between the detection sub-module and the first optical port when the communication module needs to be switched from a first access mode to a second access mode, and the first optical port is connected to the plurality of ONTs.

7. The apparatus of claim 6, wherein the communication module further comprises a first switch coupled to the second communication sub-module, the first switch coupled to the detection sub-module;

the first switch is configured to communicate a second communication sub-module with the first optical port, so that the second communication sub-module works in a first access mode; or the detection sub-module is communicated with the first optical port, so that the detection sub-module works in a second access mode.

8. The apparatus of claim 7, wherein the first switch is a1 x 2 optical switch, the 1 x 2 optical switch comprising an input, a first output, and a second output;

the input end is connected with the first optical port, the first output end is connected with the second communication sub-module, and the second output end is connected with the detection sub-module;

the input end is communicated with the first output end, so that the second communication sub-module is communicated with the first optical port; the input end is communicated with the second output end, so that the detection submodule is communicated with the first optical port.

9. The apparatus of claim 7, wherein the communication module comprises N communication sub-modules including the second communication sub-module, the apparatus comprising N optical ports including the first optical port, N being an integer greater than 1;

the first switcher comprises 1 XN optical switches and N1 X2 optical switches which are in one-to-one correspondence with the N communication sub-modules; the 1x N optical switch comprises an input end and N output ends, and the 1x 2 optical switch comprises an input end, a first output end and a second output end;

Each first output end of the N1 multiplied by 2 optical switches is respectively connected with a corresponding communication submodule; n second output ends in the N1X 2 optical switches are connected with N output ends of the 1X N optical switches in a one-to-one correspondence manner; the input ends of the N1X 2 optical switches are connected with the N optical ports in a one-to-one correspondence manner;

the input end of the 1 XN optical switch is connected with the detection submodule;

The input end of the 1 x 2 optical switch is connected with the second output end, and the input end of the 1 x 2 optical switch corresponding to the second communication sub-module in the N1 x 2 optical switches is connected with the second output end, so that the detection sub-module works in a second access mode; the third output end is an output end connected with the 1 multiplied by 2 optical switch corresponding to the second communication sub-module in the N output ends;

the input end of the 1 x2 optical switch corresponding to the first communication sub-module in the N1 x2 optical switches is connected with the first output end, so that the second communication sub-module works in a first access mode.

10. The apparatus of any of claims 7-9, wherein the second communication sub-module comprises a second MAC module and a second optical module, one end of the second MAC module is connected to the processing module, the other end of the second MAC module is connected to one end of the second optical module, and the other end of the second optical module is connected to the first switch;

The detection submodule comprises a third MAC module and a third optical module, one end of the third MAC module is connected with the processing module, the other end of the third MAC module is connected with one end of the third optical module, and the other end of the third optical module is connected with the first switch.

11. The apparatus of claim 6, wherein the communication module further comprises a second switch comprising a first terminal, a second terminal, and a third terminal, the second communication sub-module comprising a fourth MAC module and a fourth optical module, the fourth MAC module and the fourth optical module supporting the first access mode, the fourth optical module further supporting a second access mode; the detection submodule comprises a fifth MAC module, and the fifth MAC module supports a second access mode;

One end of the fourth MAC is connected with the processing module, the other end of the fourth MAC is connected with the first terminal of the second switcher, the second terminal of the second switcher is connected with the fourth optical module, and the third terminal of the second switcher is connected with the fifth MAC module;

Wherein, the first terminal is communicated with the second terminal, and the fourth MAC module and the fourth optical module work in a first access mode;

and under the condition that the second terminal is communicated with the third terminal, the fourth MAC module and the fourth optical module work in a second access mode.

12. The apparatus of claim 11, wherein the second switch is a1 x 2 electrical switch, the 1 x 2 electrical switch comprising an input, a first output, and a second output;

the second terminal is used as an input end, the first terminal is used as a first output end, and the third terminal is used as a second output end.

13. The apparatus of claim 7, wherein the communication module further comprises a third switch, the communication module comprising N communication sub-modules including the second communication sub-module, the apparatus comprising N optical ports including the first optical port, N being a positive integer;

each communication sub-module in the N communication sub-modules comprises a sixth MAC module and a sixth optical module, and the detection sub-module comprises a seventh MAC module; a sixth MAC module and a sixth optical module in the second communication sub-module support a first access mode, the sixth optical module in the second communication sub-module also supports a second access mode, and the seventh MAC module supports the second access mode;

the third switcher comprises 1×N electric switches and N1×2 electric switches which are in one-to-one correspondence with N communication sub-modules; the 1 x N electrical switch comprises an input terminal and N output terminals, the 1 x 2 electrical switch comprising an input terminal, a first output terminal and a second output terminal;

N first output ends of the N1 multiplied by 2 electric switches are connected with the N sixth MAC modules in a one-to-one correspondence manner; n second output ends of the N1X 2 electric switches are connected with N output ends of the 1X N electric switches in a one-to-one correspondence manner;

The input ends of the N1 multiplied by 2 electric switches are respectively connected with the N sixth optical modules in a one-to-one correspondence manner;

The input end of the 1 XN electric switch is connected with the seventh MAC module;

The input end of the 1×2 electric switch corresponding to the second communication sub-module in the N1×2 electric switches is connected with a first output end, and when the input end of the 1×n electric switch is connected with a third output end in the 1×n electric switches, the sixth MAC module and the sixth optical module in the second communication sub-module work in a first access mode, and the third output end is an output end connected with the 1×2 optical switch corresponding to the second communication module in the N output ends;

And the seventh MAC module and the sixth optical module work in a second access mode under the condition that the input end of the 1 multiplied by 2 electric switch corresponding to the second communication sub-module in the N1 multiplied by 2 electric switches is connected with the second output end.

14. The apparatus of any of claims 1-9, 11-13, wherein the processing module is further configured to obtain, during a process in which the communication module establishes a communication connection with the first ONT, identification information of the first ONT, where the identification information of the first ONT is used to identify an identity of the first ONT.

15. The method for detecting the ONT of the rogue optical network terminal is characterized by being applied to the OLT and comprising the following steps:

when uncontrolled rogue ONTs exist in a plurality of ONTs connected with the OLT, the OLT is switched from a first access mode to a second access mode;

wherein the uncontrolled rogue ONT is: in the first access mode, a rogue ONT of the plurality of ONTs cannot execute a command sent by the OLT;

In a second access mode, when the OLT is detected to establish connection with a first ONT, determining that the first ONT is an uncontrolled rogue ONT;

When the channels of the OLT for connecting the plurality of ONTs work in a first access mode, other ONTs except for the uncontrollable rogue ONT in the plurality of ONTs can be connected with the OLT in a communication mode, and when the channels of the OLT for connecting the plurality of ONTs work in a second access mode, other ONTs except for the uncontrollable rogue ONT in the plurality of ONTs cannot be connected with the OLT in a communication mode.

16. The method of claim 15, wherein the OLT comprises a first communication sub-module that supports a first access mode and a second access mode;

Switching the OLT from a first access mode to a second access mode, comprising:

17. The method of claim 16, wherein the first communication sub-module comprises a first medium access control, MAC, module and a first optical module, the first MAC module supporting the first access mode and the second access mode, the first optical module supporting the first access mode and the second access mode;

18. The method of claim 15, wherein the OLT comprises a second communication sub-module and a detection sub-module; the second communication sub-module supports the first access mode, and the detection sub-module supports the second access mode;

Switching the OLT from a first access mode to a second access mode, comprising:

19. The method of claim 18, wherein the OLT further comprises a switch;

switching the second communication sub-module to communicate with the plurality of ONTs to the detection sub-module to communicate with the plurality of ONTs, comprising:

And switching the communication between the second communication sub-module and the ONTs through the switcher to the communication between the detection sub-module and the ONTs.