Optical network conflict detection method and device and storage medium

Abstract

The invention provides an optical network conflict detection method and device and a storage medium, relates to the technical field of communication, and is used for identifying a target optical network unit causing coexistence conflicts. The method is applied to an optical line terminal, the optical line terminal accesses a first passive optical network and a second passive optical network, and the method comprises the following steps: in response to detecting that a first coexistence conflict feature exists, stopping uplink transmission of an optical network unit in the second passive optical network; when it is detected that the second coexistence conflict feature exists, uplink transmission of the optical network unit in the second passive optical network is recovered according to a preset strategy, and whether the first coexistence conflict feature exists or not is detected again; wherein the coexistence conflict degree represented by the second coexistence conflict feature is smaller than the coexistence conflict degree represented by the first coexistence conflict feature; and under the condition that the existence of the first coexistence conflict feature is detected again, determining that the optical network unit which recovers uplink transmission last time is a target optical network unit which causes the coexistence conflict.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an optical network conflict detection method, device and storage medium. Background Art

[0002] Passive optical network technology is a flexible broadband access technology with many advantages such as high bandwidth, high efficiency, large coverage, and rich user interfaces. It is widely used in existing access networks. Passive optical network technology is divided into 1 gigabit passive optical network (1G PON) and 10 gigabit passive optical network (10G PON) according to the transmission rate. Among them, 1G PON includes Ethernet passive optical network (EPON) and gigabit passive optical network (GPON).

[0003] At present, in the optical network where EPON and GPON coexist, there is a problem of mutual interference due to the overlap of the upstream wavelength ranges of EPON and GPON, which may cause a coexistence conflict between EPON and GPON, thereby affecting the reliability of the optical network. However, after a coexistence conflict occurs in the optical network, the target optical network unit (ONU) causing the coexistence conflict cannot be detected, resulting in the inability to smoothly eliminate the coexistence conflict, affecting the reliability of the optical network. Summary of the invention

[0004] The present application provides an optical network conflict detection method, device and storage medium for identifying a target optical network unit that causes a coexistence conflict.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] In a first aspect, an optical network conflict detection method is provided, the method being applied to an optical line terminal (OLT), the optical line terminal being connected to a first passive optical network and a second passive optical network, the first passive optical network and the second passive optical network having different transmission protocols, the method comprising:

[0007] In response to detecting the presence of the first coexistence conflict characteristic, stopping uplink transmission of the optical network unit in the second passive optical network;

[0008] When the second coexistence conflict feature is detected, the uplink transmission of the optical network unit in the second passive optical network is restored according to the preset strategy, and the first coexistence conflict feature is detected again; wherein the coexistence conflict degree represented by the second coexistence conflict feature is less than the coexistence conflict degree represented by the first coexistence conflict feature;

[0009] When the first coexistence conflict feature is detected again, the optical network unit that has most recently resumed uplink transmission is determined to be the target optical network unit causing the coexistence conflict.

[0010] In a second aspect, a communication device is provided, the device comprising:

[0011] A processing unit is used to: in response to detecting the presence of a first coexistence conflict feature, stop the uplink transmission of an optical network unit in a second passive optical network; in the case of detecting the presence of a second coexistence conflict feature, restore the uplink transmission of the optical network unit in the second passive optical network according to a preset strategy, and again detect whether there is the first coexistence conflict feature; wherein the coexistence conflict degree represented by the second coexistence conflict feature is less than the coexistence conflict degree represented by the first coexistence conflict feature; in the case of detecting the presence of the first coexistence conflict feature again, determine that the optical network unit that most recently restored the uplink transmission is the target optical network unit that caused the coexistence conflict.

[0012] In a third aspect, a communication device is provided, comprising: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the communication device implements the method provided in the first aspect above.

[0013] According to a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer executes the method provided in the first aspect.

[0014] According to a fifth aspect, a computer program product comprising computer instructions is provided. When the computer instructions are executed on a computer, the computer executes the method provided in the first aspect.

[0015] In an embodiment of the present application, when the presence of the first coexistence conflict characteristic is detected, it indicates that a coexistence conflict may have occurred. After stopping the uplink transmission of the optical network unit in the second passive optical network, when the presence of the second coexistence conflict characteristic is detected in the first passive optical network, since the degree of coexistence conflict represented by the second coexistence conflict characteristic is less than the degree of coexistence conflict represented by the first coexistence conflict characteristic, it indicates that after stopping the uplink transmission of the optical network unit in the second passive optical network, the degree of coexistence conflict in the first passive optical network is alleviated, and it is determined that there is a coexistence conflict. Then, the uplink transmission of the optical network unit in the second passive optical network is restored according to a preset strategy, and the presence of the first coexistence conflict characteristic is detected again. When the presence of the first coexistence conflict characteristic is detected again, it indicates that the optical network unit that most recently restored the uplink transmission is the target optical network unit that caused the coexistence conflict. In this way, when it is determined that a coexistence conflict characteristic has occurred, the uplink transmission of the optical network unit in the second passive optical network is restored, and whether the first coexistence conflict characteristic exists is detected again, so as to identify the target optical network unit causing the coexistence conflict, so as to provide guidance for the subsequent elimination of the coexistence conflict, which helps to improve the reliability of the optical network. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0017] Figure 1 A schematic diagram of the structure of an optical network provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of a flow chart of an optical network conflict detection method provided in an embodiment of the present application;

[0019] Figure 3 A flowchart of another optical network conflict detection method provided in an embodiment of the present application;

[0020] Figure 4 A flowchart of another optical network conflict detection method provided in an embodiment of the present application;

[0021] Figure 5 A flowchart of another optical network conflict detection method provided in an embodiment of the present application;

[0022] Figure 6 A flowchart of another optical network conflict detection method provided in an embodiment of the present application;

[0023] Figure 7 A schematic diagram of the overall process of an optical network conflict detection method provided in an embodiment of the present application;

[0024] Figure 8 A schematic diagram of the composition of a communication device provided in an embodiment of the present application;

[0025] Fig. 9 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0029] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0030] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0031] EPON includes 1G EPON and 10G EPON, and GPON includes 50G PON. 1G EPON refers to 1G upstream / 1G downstream, and 10G EPON includes 10G EPON symmetric mode and 10G EPON asymmetric mode. The 10G EPON symmetric mode refers to 10G upstream / 10G downstream, and the 10G EPON asymmetric mode refers to 1G upstream / 10G downstream.

[0032] At present, coexistence conflicts may occur in optical networks where EPON and GPON coexist. The reasons include the following:

[0033] On the one hand, in the current optical network where EPON and GPON coexist, the 1G EPON and 10G EPON asymmetric mode standards define the upstream wavelength as 1260nm~1360nm, the 10G EPON symmetric mode standard defines the upstream wavelength as 1260nm~1280nm, and the 50G PON standard defines the upstream wavelength as 1270±10nm, 1286±2nm, 1300±10nm and 1300±2nm. From the above content, it can be seen that the upstream wavelength ranges between EPON and GPON overlap, and there is a problem of mutual interference, which may cause coexistence conflicts when EPON and GPON coexist.

[0034] On the other hand, in order to achieve low cost, EPON chooses to use distributed Fabry-Perot (FP) lasers as upstream lasers. The upstream signal is multi-longitudinal mode and wide spectrum. In addition, the ONU optical transmitter has no cooling and a large wavelength drift range, which makes it more likely to have wavelength conflicts with GPON. In addition, as the scale of GPON grows, the cost of distributed feedback (DFB) lasers decreases. The upstream optical transmitter of EPON may use the same DFB laser as GPON. The DFB laser emits a wavelength of 1310±20nm. For EPON using DFB lasers, there are further conditions for no wavelength coexistence conflicts with GPON.

[0035] In summary, reliable coexistence between EPON and GPON cannot be achieved at present. Therefore, it is necessary to identify the target optical network unit that causes the coexistence conflict to guide network operation and maintenance personnel to eliminate the coexistence conflict. However, the current related technology cannot identify the target optical network unit that causes the coexistence conflict, resulting in the inability to smoothly eliminate the coexistence conflict, affecting the reliability of the optical network.

[0036] Based on this, the embodiments of the present application provide an optical network conflict detection method, device and storage medium. When the presence of a first coexistence conflict feature is detected, it indicates that a coexistence conflict may have occurred. After stopping the uplink transmission of the optical network unit in the second passive optical network, when the presence of a second coexistence conflict feature is detected, since the degree of coexistence conflict represented by the second coexistence conflict feature is less than the degree of coexistence conflict represented by the first coexistence conflict feature, it indicates that after stopping the uplink transmission of the optical network unit in the second passive optical network, the degree of coexistence conflict is alleviated, and it is determined that there is a coexistence conflict. Then, the uplink transmission of the optical network unit in the second passive optical network is restored according to a preset strategy, and the presence of the first coexistence conflict feature is detected again. When the presence of the first coexistence conflict feature is detected again, it indicates that the optical network unit that most recently restored the uplink transmission is the target optical network unit that caused the coexistence conflict. In this way, when it is determined that a coexistence conflict characteristic has occurred, the uplink transmission of the optical network unit in the second passive optical network is restored, and whether the first coexistence conflict characteristic exists is detected again, so as to identify the target optical network unit causing the coexistence conflict, so as to provide guidance for the subsequent elimination of the coexistence conflict, which helps to improve the reliability of the optical network.

[0037] The scheme of the embodiment of the present application is introduced below with reference to the accompanying drawings.

[0038] Figure 1 A schematic diagram of the structure of an optical network provided in an embodiment of the present application. Figure 1 As shown, the optical network includes but is not limited to an OLT 10 , an optical distribution network (ODN) 20 , a first passive optical network 30 and a second passive optical network 40 .

[0039] In some embodiments, OLT 10 is connected to ODN 21, and OLT 10 accesses the first passive optical network 30 and the second passive optical network 40 through ODN 21. OLT 10 is a terminal device used to connect to the optical fiber trunk line, and is a central office device in the optical network. It has the following functions:

[0040] 1. Send Ethernet data to ONU in broadcast mode.

[0041] 2. Initiate and control the ranging process, and record the ranging information.

[0042] 3. Allocate bandwidth to ONU, that is, control the start time and sending window size of ONU data.

[0043] In some embodiments, OLT10 is a multimode OLT device supporting multiple rate modes, for example, OLT10 is a multimode OLT device supporting multiple modes such as EPON mode and GPON mode. Among them, EPON mode includes 1G EPON and 10G EPON, and GPON mode includes 50GPON, that is, OLT10 can be a multimode OLT device supporting 1G EPON, 10G EPON and 50G PON.

[0044] In some embodiments, ODN21 connects the first passive optical network 30 and the second passive optical network 40, and is used to provide an optical transmission channel between OLT10 and the first passive optical network 30 and the second passive optical network 40. ODN21 includes passive devices such as optical fibers and passive optical splitters.

[0045] In some embodiments, the transmission protocols of the first passive optical network 30 and the second passive optical network 40 are different. For example, the first passive optical network 30 is one of an Ethernet passive optical network and a gigabit passive optical network, and the second passive optical network 40 is the other of the Ethernet passive optical network and the gigabit passive optical network. The Ethernet passive optical network includes at least one of the following: a 1G Ethernet passive optical network, a 10G Ethernet passive optical network, and the gigabit passive optical network includes a 50G gigabit passive optical network; the 10G Ethernet passive optical network includes at least one of the following modes: a 10G Ethernet passive optical network asymmetric mode, and a 10G Ethernet passive optical network symmetric mode.

[0046] 50G Gigabit Passive Optical Network includes three uplink rates: 12.5G, 25G, and 50G. It should be understood that with the development of passive optical network technology, passive optical networks using other different transmission protocols may also appear in the future, and future passive optical networks may also use other names.

[0047] In some embodiments, for the first passive optical network 30 and the second passive optical network 40 with different transmission protocols, the first passive optical network 30 and the second passive optical network 40 can coexist in the optical network through a wavelength combiner / demultiplexer, or can coexist in the optical network in the form of a combined (Combo) optical module.

[0048] In some embodiments, the first passive optical network 30 and the second passive optical network 40 may each include a plurality of ONUs.

[0049] For example, taking the first passive optical network 30 as an Ethernet passive optical network and the second passive optical network 40 as a Gigabit passive optical network as an example, Figure 1 As shown, the first passive optical network 30 may include a plurality of ONUs (eg, ONU31, ONU32, and ONU33).

[0050] As an example, the multiple ONUs included in the first passive optical network 30 can be ONUs of passive optical networks in the same rate mode, for example, the multiple ONUs can all be ONUs of any passive optical network among 1G EPON, 10G EPON asymmetric mode, and 10G EPON symmetric mode.

[0051] As another example, the multiple ONUs may also be ONUs of passive optical networks with different rate modes. For example, ONU31 may be an ONU of 1G EPON, ONU32 may be an ONU of 10G EPON asymmetric mode, ONU33 may be an ONU of 10G EPON symmetric mode, and so on.

[0052] Continue as Figure 1 As shown, the second passive optical network 40 may include a plurality of ONUs (eg, ONU41, ONU42, and ONU43).

[0053] As an example, the multiple ONUs included in the second passive optical network 40 can be ONUs of passive optical networks with the same upstream rate. For example, when the second passive optical network 40 is a 50G PON, ONU41, ONU42 and ONU43 can all be 50GPON ONUs with an upstream rate of 12.5G.

[0054] As another example, the multiple ONUs included in the second passive optical network 40 can be ONUs of passive optical networks with different upstream rates. For example, when the second passive optical network 40 is 50G PON, ONU41 can be an ONU of a 50G PON with an upstream rate of 12.5G, ONU42 can be an ONU of a 50G PON with an upstream rate of 25G, and ONU43 can be an ONU of a 50G PON with an upstream rate of 50G.

[0055] In some embodiments, for each ONU in the optical network, the ONU is used to receive broadcast data sent by OLT10; it is also used to respond to ranging and power control commands issued by OLT10 and make corresponding adjustments; it is also used to cache the user's Ethernet data and send it in the upstream direction in the sending window allocated by OLT10.

[0056] It should be understood that Figure 1 is an exemplary structural diagram, Figure 1The number of devices included in the optical network shown is unlimited, for example, the number of ONUs is unlimited. Figure 1 In addition to the equipment shown, Figure 1 The optical network shown may also include other devices, which is not limited to this.

[0057] Next, if Figure 2 As shown, the embodiment of the present application provides an optical network conflict detection method, which is applied to an optical line terminal, which can be the above-mentioned Figure 1 The OLT 10 shown in the figure comprises the following steps:

[0058] S101. In response to detecting the presence of a first coexistence conflict feature, stopping uplink transmission of an optical network unit in a second passive optical network.

[0059] In some embodiments, during the operation of the optical network, in order to ensure the reliability of the optical network, the optical line terminal detects whether the optical network has a first coexistence conflict feature after the conflict detection function is turned on. When the first coexistence conflict feature is detected, in response to detecting the first coexistence conflict feature, the uplink transmission of the optical network unit in the second passive optical network is stopped.

[0060] As a possible example, the coexistence conflict detection function is enabled by default in the optical line terminal.

[0061] As another possible example, the optical line terminal periodically turns on the coexistence conflict detection function, for example, the optical line terminal automatically turns on the coexistence conflict detection function between 6:00 am and 12:00 pm, and automatically turns off the coexistence conflict detection function between 12:00 pm and 6:00 am.

[0062] As another possible example, the optical line terminal determines to turn on / off the coexistence conflict detection function according to an instruction sent by a user.

[0063] In some embodiments, during the operation of the optical network, the optical line terminal also records the authentication information of the optical network unit that is online during operation, such as the media access control (MAC) address of the optical network unit, the serial number (SN) of the optical network unit, etc., so as to facilitate the subsequent positioning of the target optical network unit that causes the coexistence conflict. The optical network unit that is online during operation includes an unconfigured optical network unit that has not been authenticated.

[0064] In some embodiments, the first coexistence conflict feature includes at least one of the following: abnormal online status of the optical network unit, signal degradation, a bit error rate per unit time greater than a bit error rate threshold, presence of a long light alarm, etc.

[0065] The abnormal online state of the optical network unit refers to the situation that the ONU suddenly goes offline or repeatedly goes online and offline due to reasons other than optical line terminal or offline reasons in the first passive optical network and / or the second passive optical network.

[0066] Signal degradation includes at least one of the following: the number of signal degrade of ONU identity document (SDi) alarms occurring per unit time is greater than a preset number, and the growth rate of correctable and / or uncorrectable forward error correction (FEC) per unit time is greater than a preset rate threshold. The growth rate of correctable and / or uncorrectable FEC per unit time being greater than the preset rate threshold can be understood as the growth rate of correctable and / or uncorrectable FEC suddenly accelerating in unit time.

[0067] It should be noted that the above-mentioned bit error rate threshold, preset number of times and preset rate threshold can all be pre-set by network administrators. Network administrators can also change the bit error rate threshold, preset number of times and preset rate threshold according to actual application scenarios, which will not be elaborated here.

[0068] It should be understood that when the presence of the first coexistence conflict feature is detected, it indicates that the wavelength of one passive optical network may drift to the wavelength range of another passive optical network, indicating that there may be a coexistence conflict between the first passive optical network and the second passive optical network. In order to determine whether there is a coexistence conflict between the first passive optical network and the second passive optical network, the uplink transmission of the optical network unit in the second passive optical network can be stopped.

[0069] As an example, detecting the presence of a first coexistence conflict feature may be detecting that the first coexistence conflict feature exists in both the first passive optical network and the second passive optical network. In order to determine whether there is a coexistence conflict between the first passive optical network and the second passive optical network, uplink transmission of an optical network unit in one of the first passive optical network and the second passive optical network may be randomly stopped, for example, uplink transmission of the optical network unit in the second passive optical network may be stopped.

[0070] From the above description of the first passive optical network and the second passive optical network, it can be known that the first passive optical network is one of the Ethernet passive optical network and the gigabit passive optical network, and the second passive optical network is the other of the Ethernet passive optical network and the gigabit passive optical network. That is, when it is detected that both the Ethernet passive optical network and the gigabit passive optical network have the first coexistence conflict feature, the uplink transmission of the optical network unit in one of the Ethernet passive optical network and the gigabit passive optical network can be randomly stopped to determine whether there is a coexistence conflict between the Ethernet passive optical network and the gigabit passive optical network.

[0071] As another example, detecting the presence of the first coexistence conflict feature may be detecting the presence of the first coexistence conflict feature in the first passive optical network. In this way, the uplink transmission of the optical network unit in the second passive optical network may be stopped to determine whether there is a coexistence conflict between the first passive optical network and the second passive optical network. That is, when it is detected that one of the two passive optical networks has the first coexistence conflict feature, the uplink transmission of the optical network unit in the other of the two passive optical networks is stopped to determine whether there is a coexistence conflict between the two passive optical networks.

[0072] As a possible example, stopping the uplink transmission of the optical network unit in the second passive optical network may be stopping the uplink transmission of all optical network units in the second passive optical network.

[0073] As another possible example, stopping the uplink transmission of the optical network units in the second passive optical network may be stopping the uplink transmission of all the optical network units in the second passive optical network one by one or in groups until the uplink transmission of all the optical network units in the second passive optical network is stopped.

[0074] In some embodiments, stopping the uplink transmission of the optical network unit in the second passive optical network may be stopping the uplink bandwidth allocation to the optical network unit in the second passive optical network, and / or turning off the power of the optical transmitter of the optical network unit in the second passive optical network.

[0075] In some embodiments, when stopping the uplink bandwidth allocation to the optical network unit in the second passive optical network, it is necessary to shield the uplink multi-point control protocol (MPCP) timeout and standard operation, administration and maintenance (OAM)

[0076] The power supply of the optical transmitter of the optical network unit in the second passive optical network is turned off, and the optical line terminal may send a management message to the second passive optical network, and the management message is used to instruct the second passive optical network to turn off the power supply of the optical transmitter of the optical network unit in the second passive optical network.

[0077] It should be noted that, depending on the different management protocols of the optical network, the content of the management message sent by the optical line terminal to the second passive optical network is also different. The management message sent can be the ONUTxPowerSupplyControl extended OAM message defined in the "China Telecom EPON Equipment Technical Requirements", or it can be other management messages with similar functions, etc. The embodiments of the present application do not limit this.

[0078] S102: when it is detected that the first passive optical network has the second coexistence conflict characteristic, restore the uplink transmission of the optical network unit in the second passive optical network according to a preset strategy, and detect again whether the first passive optical network has the first coexistence conflict characteristic.

[0079] In some embodiments, to determine whether there is a coexistence conflict between two passive optical networks, after stopping uplink transmission of an optical network unit in the second passive optical network, the optical line terminal detects whether there is a second coexistence conflict feature in the first passive optical network.

[0080] The coexistence conflict degree represented by the second coexistence conflict characteristic is less than the coexistence conflict degree represented by the first coexistence conflict characteristic.

[0081] It should be understood that, since the degree of coexistence conflict represented by the second coexistence conflict characteristic is less than the degree of coexistence conflict represented by the first coexistence conflict characteristic, detecting whether the first passive optical network has the second coexistence conflict characteristic is to detect whether the degree of coexistence conflict in the first passive optical network is alleviated after stopping the uplink transmission of the optical network unit in the second passive optical network. In the case where the degree of coexistence conflict in the first passive optical network is alleviated, it means that there is a high probability that there is an optical network unit causing the coexistence conflict in the optical network unit whose uplink transmission is stopped. Therefore, the uplink transmission of the optical network unit in the second passive optical network is restored according to the preset strategy, and the first passive optical network is detected again to see whether the first coexistence conflict characteristic exists, so as to identify the target optical network unit causing the coexistence conflict in the second passive optical network.

[0082] As an example, the coexistence conflict degree represented by the second coexistence conflict feature may be 0, indicating that the first coexistence conflict feature of the first passive optical network disappears.

[0083] In some embodiments, the preset strategy includes at least one of the following: one-by-one recovery, group recovery, and dichotomy. Wherein, in the case of group recovery, each group includes at least two optical network units.

[0084] Various methods of presetting the strategy are described exemplarily below. For example, it is assumed that the second passive optical network includes eight ONUs, namely, ONU1, ONU2, ONU3, ONU4, ONU5, ONU6, ONU7 and ONU8.

[0085] When the preset strategy is to restore one by one, the uplink transmission of ONU1 can be restored first, then the uplink transmission of ONU2, then the uplink transmission of ONU3, then the uplink transmission of ONU4, then the uplink transmission of ONU5, then the uplink transmission of ONU6, then the uplink transmission of ONU7, and then the uplink transmission of ONU8.

[0086] When the preset strategy is group recovery, ONU1 and ONU2 can be used as a group to restore upstream transmission first, then ONU3 and ONU4 can be used as a group to restore upstream transmission, then ONU5 and ONU6 can be used as a group to restore upstream transmission, and then ONU7 and ONU8 can be used as a group to restore upstream transmission.

[0087] In the case where the preset strategy is binary, ONU1, ONU2, ONU3 and ONU4 can be firstly taken as a group to resume upstream transmission, and detect whether there is a first coexistence conflict feature. In the case where the first coexistence conflict feature is detected, it means that the coexistence conflict may be caused by an ONU among ONU1, ONU2, ONU3 and ONU4, and then ONU1 and ONU2 can be taken as a group to stop upstream transmission and then resume upstream transmission, and detect whether there is a first coexistence conflict feature. In the case where the first coexistence conflict feature is detected, it means that the coexistence conflict may be caused by one of ONU1 and ONU2, and then ONU1 and ONU2 can be stopped upstream transmission in turn and then resume upstream transmission, and detect whether there is a first coexistence conflict feature. After ONU1 and ONU2 are taken as a group to stop upstream transmission and then resume upstream transmission, and detect whether there is a first coexistence conflict feature, if the first coexistence conflict feature is not detected, it means that the coexistence conflict may not be caused by one of ONU1 and ONU2, then ONU3 and ONU4 can be taken as a group to resume upstream transmission, and detect whether there is the first coexistence conflict feature. The following description can refer to the above description of taking ONU1 and ONU2 as a group to resume upstream transmission and detect whether there is a first coexistence conflict feature, which is not repeated here.

[0088] After ONU1, ONU2, ONU3 and ONU4 are taken as a group to restore uplink transmission and detect whether there is a first coexistence conflict feature, if the first coexistence conflict feature is not detected, it means that the coexistence conflict may not be caused by an ONU among ONU1, ONU2, ONU3 and ONU4, and ONU5, ONU6, ONU7 and ONU8 can be taken as a group to restore uplink transmission and detect whether there is the first coexistence conflict feature. The following description can refer to the above description of taking ONU1, ONU2, ONU3 and ONU4 as a group to restore uplink transmission, which is not repeated here.

[0089] It should be understood that, when the dichotomy method is adopted to restore the uplink transmission of the optical network unit in the second passive optical network, it helps to improve the efficiency of identifying the target optical network unit that causes the coexistence conflict.

[0090] In some embodiments, restoring the uplink transmission of the optical network unit in the second passive optical network may be restoring the uplink bandwidth allocation for the optical network unit in the second passive optical network, and / or sending a management message to turn on the power of the optical transmitter of the optical network unit in the second passive optical network.

[0091] It should be noted that the restoration of the uplink transmission of the optical network unit in the second passive optical network may correspond to the above-mentioned method used when stopping the uplink transmission of the optical network unit in the second passive optical network. For example, in the above-mentioned case where the uplink transmission of the optical network unit in the second passive optical network is stopped one by one, the uplink transmission of the optical network unit in the second passive optical network may be restored in a one-by-one manner.

[0092] In some embodiments, in order to make the first coexistence conflict feature of the subsequent first passive optical network easier to detect, when resuming the uplink bandwidth allocation for the optical network units in the second passive optical network, all the remaining bandwidth can be allocated to the optical network units in the first passive optical network and the optical network units to be detected in the second passive optical network, so that the uplink burst optical signal occupies the entire time slot as much as possible.

[0093] As an example, if the second coexistence conflict feature is not detected, it means that the coexistence conflict level has not been alleviated, which means that the first coexistence conflict feature may be caused by other reasons. The optical line terminal can issue a prompt message to prompt the network management personnel to repair the optical network.

[0094] S103: When the first coexistence conflict feature is detected again in the first passive optical network, determine that the optical network unit that has restored uplink transmission most recently is the target optical network unit that caused the coexistence conflict.

[0095] It should be understood that the optical line terminal detects again whether the first passive optical network has the first coexistence conflict feature after restoring the uplink transmission of the optical network unit in the second passive optical network. Therefore, when the first passive optical network is detected to have the first coexistence conflict feature again, it can be determined that the optical network unit that has restored the uplink transmission most recently is the target optical network unit that caused the coexistence conflict.

[0096] As an example, in the case where the optical line terminal restores the uplink transmission of the optical network units in the second passive optical network according to the group, when the first coexistence conflict feature is detected again in the first passive optical network, it means that the coexistence conflict is caused by the optical network units in the group of second passive optical networks that restored the uplink transmission the most recently. The optical line terminal can determine that the optical network units in the group of second passive optical networks that restored the uplink transmission the most recently are all target optical network units that caused the coexistence conflict. Alternatively, the optical line terminal stops the uplink transmission of the optical network units in the group of second passive optical networks again, and then restores the uplink transmission of each optical network unit in the group of second passive optical networks one by one, and detects again whether the first passive optical network has the first coexistence conflict feature. In the case where the first coexistence conflict feature is detected again in the first passive optical network, it is determined that the optical network unit that restored the uplink transmission the most recently is the target optical network unit that caused the coexistence conflict.

[0097] It should be understood that determining that the optical network unit that most recently resumed uplink transmission is the target optical network unit that caused the coexistence conflict can ensure the accuracy of identifying the target optical network unit; determining that the optical network units in a group of second passive optical networks that most recently resumed uplink transmission are all the target optical network units that caused the coexistence conflict can improve the efficiency of identifying the target optical network unit. Those skilled in the art can select an appropriate determination method according to the actual application scenario, and the embodiments of the present application are not limited to this.

[0098] In some embodiments, after determining that an optical network unit is the target optical network unit causing the coexistence conflict, the optical line terminal can stop the uplink transmission of the optical network unit to prevent the optical network unit from causing the coexistence conflict again, which helps to improve the reliability of the optical network.

[0099] based on Figure 2In the embodiment shown, when the presence of the first coexistence conflict characteristic is detected, it indicates that a coexistence conflict may have occurred. After stopping the uplink transmission of the optical network unit in the second passive optical network, when the presence of the second coexistence conflict characteristic is detected in the first passive optical network, since the degree of coexistence conflict represented by the second coexistence conflict characteristic is less than the degree of coexistence conflict represented by the first coexistence conflict characteristic, it indicates that after stopping the uplink transmission of the optical network unit in the second passive optical network, the degree of coexistence conflict in the first passive optical network is alleviated, and it is determined that there is a coexistence conflict. Then, the uplink transmission of the optical network unit in the second passive optical network is restored according to the preset strategy, and the presence of the first coexistence conflict characteristic is detected again. When the presence of the first coexistence conflict characteristic is detected again, it indicates that the optical network unit that most recently restored the uplink transmission is the target optical network unit that caused the coexistence conflict. In this way, when it is determined that a coexistence conflict characteristic has occurred, the uplink transmission of the optical network unit in the second passive optical network is restored, and whether the first coexistence conflict characteristic exists is detected again, so as to identify the target optical network unit causing the coexistence conflict, so as to provide guidance for the subsequent elimination of the coexistence conflict, which helps to improve the reliability of the optical network.

[0100] In some embodiments, after re-detecting whether the first passive optical network has the first coexistence conflict feature, if the first coexistence conflict feature is not detected in the first passive optical network, that is, if the target optical network unit that specifically causes the coexistence conflict is not detected, the optical line terminal can stop the uplink transmission of all optical network units in the first passive optical network, and restore the uplink transmission of all optical network units in the second passive optical network. After all optical network units in the second passive optical network are detected by the optical line terminal (which can be understood as all optical network units in the second passive optical network are back online), the uplink transmission of the optical network units in the second passive optical network is stopped, and the first passive optical network is detected again for the second coexistence conflict feature, that is, the above steps S101 to S102 are repeated until the target optical network unit causing the coexistence conflict is detected.

[0101] The above embodiment is described by taking the case where the presence of the first coexistence conflict feature is detected, directly stopping the uplink transmission of the optical network unit in the second passive optical network as an example. In some embodiments, such as Figure 3 As shown, before stopping the uplink transmission of the optical network unit in the second passive optical network, the method further includes the following steps:

[0102] S201. Determine whether a first optical network unit exists within a preset time period before a first coexistence conflict is detected.

[0103] It can be understood that, in the case where the first coexistence conflict feature is detected, the coexistence conflict may be caused by an optical network unit that is currently connected to the optical line terminal, or may be caused by an optical network unit that has recently been newly connected to the optical line terminal. Therefore, in the case where the first coexistence conflict feature is detected, in response to detecting the presence of the first coexistence conflict feature, it is determined whether a first optical network unit exists within a preset time length before the first coexistence conflict is detected. The first optical network unit is an optical network unit that is connected to the optical line terminal within the preset time length. The preset time length may be preset by a network administrator, for example, 1 minute.

[0104] S202: When the first optical network unit exists, stop uplink transmission of the first optical network unit, and detect whether there is a first coexistence conflict feature.

[0105] In the case where the first optical network unit exists, it means that within the preset time period before the first coexistence conflict feature is detected, there is an optical network unit newly connected to the optical line terminal. In order to determine whether the coexistence conflict is caused by the optical network unit newly connected to the optical line terminal, the optical line terminal stops the uplink transmission of the first optical network unit and detects whether the first coexistence conflict feature exists.

[0106] In some embodiments, stopping the uplink transmission of the first optical network unit may be stopping the uplink transmission of the first optical network unit in an orderly manner or stopping the uplink transmission of the first optical network unit in an unordered (ie, random) manner.

[0107] In the case of orderly stopping the uplink transmission of the first optical network unit, stopping the uplink transmission of the first optical network unit may include the following steps:

[0108] X1. Determine the order in which each first optical network unit stops uplink transmission according to the access time of each first optical network unit accessing the optical line terminal.

[0109] The order in which each first optical network unit stops uplink transmission is negatively correlated with the access time corresponding to the first optical network unit, that is, the first optical network unit with a shorter access time stops uplink transmission earlier.

[0110] X2. Stop the uplink transmission of the first optical network units in sequence according to the order in which each first optical network unit stops the uplink transmission.

[0111] It should be understood that in the presence of a first optical network unit newly accessed to the optical line terminal, the presence of a first coexistence conflict feature is detected, and therefore the coexistence conflict is more likely to be caused by the first optical network unit of the newly accessed optical line terminal. In the embodiment of the present application, the order in which each first optical network unit stops uplink transmission is determined based on the access time of each first optical network unit to the optical line terminal, which helps to improve the efficiency of identifying the target optical network unit.

[0112] In some embodiments, when the first optical network unit does not exist, the uplink transmission of the optical network unit in the second passive optical network is stopped, that is, the above steps S101 to S103 are executed, which will not be repeated here.

[0113] S203: When no first coexistence conflict feature is detected, determine that the first optical network unit that has stopped uploading transmission most recently is the target optical network unit that causes the coexistence conflict.

[0114] It should be understood that when the first coexistence conflict feature is not detected, it means that the first coexistence conflict feature disappears, which can be understood as stopping the uplink transmission of a first optical network unit, and the coexistence conflict disappears, then the first optical network unit can be determined as the target optical network unit causing the coexistence conflict. Therefore, when the first coexistence conflict feature is not detected, the first optical network unit that stopped uplink transmission the most recently is determined to be the target optical network unit causing the coexistence conflict.

[0115] In some embodiments, Figure 4 As shown, after step S203, the method further includes the following steps:

[0116] S204: Restore uplink transmission of the second optical network unit, and detect whether the first coexistence conflict feature exists.

[0117] The second optical network unit is the first optical network unit in the first optical network unit that has stopped uplink transmission.

[0118] In some embodiments, in order to improve the accuracy of identifying the target optical network unit, after stopping the uplink transmission of the first optical network unit and identifying the target optical network unit in the first optical network unit, the uplink transmission of the second optical network unit can be resumed, and it can be detected whether there is a first coexistence conflict feature, so as to perform target optical network unit identification again on the second optical network unit that has previously been identified as the target optical network unit, so as to identify whether there is a target optical network unit in the second optical network unit, which helps to improve the accuracy of identifying the target optical network unit.

[0119] As an example, restoring the uplink transmission of the second optical network unit may include the following steps:

[0120] Y1. Determine the order in which the second optical network units resume upstream transmission according to the time when the second optical network units stop upstream transmission.

[0121] The order in which each second optical network unit resumes uplink transmission is positively correlated with the time of stopping uplink transmission corresponding to the second optical network unit. That is to say, the shorter the time of stopping uplink transmission, the earlier the uplink transmission is resumed. It can also be understood that the second optical network unit that stops uplink transmission earlier resumes uplink transmission later.

[0122] In some embodiments, the order in which the second optical network units resume uplink transmission may also be determined based on the access time of the second optical network units to the optical line terminal, wherein the order in which each second optical network unit resumes uplink transmission is positively correlated with the access time corresponding to the second optical network unit.

[0123] Y2. Restore the uplink transmission of the second optical network units in sequence according to the order in which each of the second optical network units resumes uplink transmission.

[0124] It should be understood that in order to ensure the reliability of the optical network, the first optical network unit that has been determined as the target optical network unit does not need to resume uplink transmission.

[0125] S205: When the first coexistence conflict feature is detected, determine that the second optical network unit that has most recently resumed uplink transmission is the target optical network unit that caused the coexistence conflict.

[0126] It should be understood that when the presence of the first coexistence conflict feature is detected, it means that after the uplink transmission of a second optical network unit is restored, the coexistence conflict occurs again, and the second optical network unit that most recently restored the uplink transmission can be used as the target optical network unit causing the coexistence conflict.

[0127] In this way, after stopping the uplink transmission of the first optical network unit and identifying the target optical network unit in the first optical network unit, the uplink transmission of the second optical network unit can be restored, and it can be detected whether the first coexistence conflict feature exists, so as to perform target optical network unit identification again on the second optical network unit that has previously performed target optical network unit identification, so as to identify whether there is a target optical network unit in the second optical network unit, which helps to improve the accuracy of identifying the target optical network unit.

[0128] In some embodiments, Figure 5 As shown, after step S202, the method further includes the following steps:

[0129] S301: When a first coexistence conflict feature is detected, close a discovery window of a target passive optical network, and detect again whether the first coexistence conflict feature exists.

[0130] It should be understood that when the presence of the first coexistence conflict feature is detected, it means that after stopping the uplink transmission of all first optical network units, the first coexistence conflict feature still exists, that is, the coexistence conflict has not disappeared. In order to identify the target optical network unit, the optical line terminal closes the discovery window of the target passive optical network and detects again whether the first coexistence conflict feature exists.

[0131] The discovery window refers to a window in the passive optical network used to discover optical network units that are connected to the optical distribution network (also understood as access to the optical line terminal) but not online, which is represented by the discovery Gate in 10G EPON. The target passive optical network is a passive optical network of the same type as the first optical network unit in the first passive optical network and the second passive optical network.

[0132] Exemplarily, assuming that the first passive optical network is EPON and the second passive optical network is GPON, if the first optical network unit is EPON ONU, after comparison, the type of the first optical network unit is the same as the type of the first passive optical network, then the first passive optical network is determined to be the target passive optical network.

[0133] S302: When the first coexistence conflict feature is detected again, determine that the third optical network unit is the target optical network unit causing the coexistence conflict.

[0134] It should be understood that when the first coexistence conflict feature is detected again, it means that even after the discovery window of the target passive optical network is closed, the first coexistence conflict feature has not disappeared, that is, the coexistence conflict still exists, and the degree of coexistence conflict is so serious that the first optical network unit newly connected to the ODN cannot be discovered at all, so that the authentication information of the first optical network unit cannot be obtained, but in the process of the first optical network unit trying to discover, it is still possible to affect the normal operation of the optical network unit in the passive optical network of a different type from the first optical network unit. Therefore, when the first coexistence conflict feature is detected again, the third optical network unit is determined to be the target optical network unit causing the coexistence conflict. Among them, the third optical network unit is an optical network unit that is not online in the first optical network unit. The third optical network unit can also be understood as an optical network unit that has accessed the optical path but has never been discovered (not online).

[0135] based on Figure 5 In the embodiment shown, the first coexistence conflict feature is detected again when the uplink transmission of all first optical network units is stopped. The target optical network unit is detected by closing the discovery window of the target passive optical network, which helps to improve the accuracy of identifying the target optical network unit.

[0136] In some embodiments, after determining the target optical network unit, for example, after the above step S103, step S203, step S205 or step S302, as shown in FIG. Figure 6 As shown, the method also includes the following steps:

[0137] S401. Issue an alarm message.

[0138] The alarm information is used to indicate the existence of a coexistence conflict, and includes an identifier of a target optical network unit. The identifier of the target optical network unit is used to uniquely indicate the target optical network unit, for example, it may be a MAC address of the target optical network unit.

[0139] It should be understood that after the target optical network unit is determined, an alarm message is issued to alert the network management personnel that a coexistence conflict exists and maintenance is required, which helps to improve the reliability of the optical network. In addition, the alarm message includes the identification of the target optical network unit so that the network management personnel can accurately inspect and repair the target optical network unit based on the identification of the target optical network unit to eliminate the coexistence conflict, thereby improving the efficiency and accuracy of eliminating the coexistence conflict.

[0140] As an example, an optical network conflict detection method provided in an embodiment of the present application can be applied to the coexistence conflict (wavelength conflict) between EPON and GPON caused by the upstream wavelength of EPON drifting into the upstream wavelength range of GPON due to factors such as ambient temperature changes or ONU laser aging during the operation of the optical network, as well as the first detection after the OLT is restarted or cutover. The embodiment of the present application is not limited to this.

[0141] An optical network conflict detection method provided in an embodiment of the present application is illustrated below with reference to a specific example.

[0142] For example, the first passive optical network is 10G EPON and the second passive optical network is 50GPON. Figure 7 , which is a schematic diagram of the overall process of an optical network conflict detection method provided in an embodiment of the present application.

[0143] Step 1: During the operation of the optical network, the optical line terminal records the authentication information of the 10G EPON ONU and the 50G PON ONU that are online and newly connected during operation, and detects whether the 50G PON and the 10G EPON have the first coexistence conflict feature.

[0144] Step 2: When detecting that the 50G PON has the first coexistence conflict feature, the optical line terminal determines whether there is a newly connected 10G EPON ONU before a preset time.

[0145] In the case that there is a newly connected 10G EPON ONU, the following steps 3 to 8 are executed. In the case that there is no newly connected 10G EPON ONU, the following steps 9 to 11 are executed.

[0146] Step 3: Stop the uplink transmission of the newly connected 10G EPON ONU, and detect whether there is a first coexistence conflict feature.

[0147] In the case where the first coexistence conflict feature is detected, the following steps 4 to 5 are performed; in the case where the first coexistence conflict feature is not detected, the following steps 6 to 8 are performed.

[0148] For the description of step 2 to step 3, please refer to the above description of step S202 to step S203, which will not be repeated here.

[0149] Step 4: close the discovery window of 10G EPON and detect again whether the first coexistence conflict feature exists.

[0150] Step 5: When the first coexistence conflict feature is detected again, determine that the ONU that is not online in the newly connected 10G EPONONU is the target optical network unit that causes the coexistence conflict.

[0151] For the description of steps 4 to 5, reference may be made to the above description of steps S301 to S302, which will not be repeated here.

[0152] Step 6: When the first coexistence conflict feature is not detected, determine that the 10G EPON ONU that stopped uplink transmission most recently is the target optical network unit causing the coexistence conflict.

[0153] Step 7: Resume the uplink transmission of the newly connected 10G EPON ONU that has stopped uplink transmission, and detect whether the first coexistence conflict feature exists.

[0154] Step 8: When the first coexistence conflict feature is detected, determine that the 10G EPON ONU that has most recently resumed uplink transmission is the target optical network unit that causes the coexistence conflict.

[0155] For the description of steps 6 to 8, please refer to the description of steps S203 to S205, which will not be repeated here.

[0156] Step 9: Stop the upstream transmission of the ONU in the 10G EPON, and detect whether the 50G PON has the second coexistence conflict feature.

[0157] Step 10: When it is detected that the 50G PON has the second coexistence conflict characteristic, the uplink transmission of the 10G EPON ONU is restored according to a preset strategy, and the 50G PON is detected again to see if the first coexistence conflict characteristic exists.

[0158] Step 11: When the first coexistence conflict feature is detected again in the 50G PON, the 10G EPON ONU that has recently resumed upstream transmission is determined to be the target optical network unit causing the coexistence conflict.

[0159] For the description of steps 9 to 11, reference may be made to the above description of steps S101 to S103, which will not be repeated here.

[0160] Step 12: Issue an alarm message.

[0161] In some embodiments, after the target optical network unit is determined, the optical line terminal sends out an alarm message. For the description of the alarm message, reference may be made to the description of the alarm message in the above step S401, which will not be described in detail here.

[0162] The above mainly introduces the solution provided by the present application from the perspective of the interaction between each node. It can be understood that each node, such as an optical line terminal, includes a hardware structure and / or software module corresponding to the execution of each function in order to realize the above functions. Those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0163] Figure 8 FIG. 1 is a schematic diagram showing the composition of a communication device provided in an embodiment of the present application. Figure 8 As shown, the communication device 50 includes a processing unit 501 and a sending unit 502 .

[0164] The communication device 50 may be the above optical line terminal or a chip in the optical line terminal. When the communication device 50 is used to implement the functions of the optical line terminal in the above embodiment, each unit is specifically used to implement the following functions.

[0165] The processing unit 501 is used for: in response to detecting the presence of a first coexistence conflict feature, stopping the uplink transmission of the optical network unit in the second passive optical network; in the case of detecting the presence of a second coexistence conflict feature in the first passive optical network, restoring the uplink transmission of the optical network unit in the second passive optical network according to a preset strategy, and detecting again whether the first coexistence conflict feature exists in the first passive optical network; wherein the coexistence conflict degree represented by the second coexistence conflict feature is less than the coexistence conflict degree represented by the first coexistence conflict feature; in the case of detecting the presence of the first coexistence conflict feature in the first passive optical network again, determining that the optical network unit that most recently resumed uplink transmission is the target optical network unit that caused the coexistence conflict.

[0166] In some embodiments, the first coexistence conflict feature includes at least one of the following: abnormal online status of the optical network unit, signal degradation, a bit error rate per unit time greater than a bit error rate threshold, and the presence of a long light alarm.

[0167] In some embodiments, the preset strategy includes at least one of the following: one-by-one recovery, group recovery, and binary division.

[0168] In some embodiments, the processing unit 501 is specifically configured to stop allocating uplink bandwidth to the optical network unit in the second passive optical network, and / or to turn off the power supply of the optical transmitter of the optical network unit in the second passive optical network.

[0169] In some embodiments, the processing unit 501 is also used to: determine whether there is a first optical network unit within a preset time length before the presence of the first coexistence conflict feature is detected; the first optical network unit is an optical network unit that is connected to the optical line terminal within the preset time length; in the case of the presence of the first optical network unit, stop the uplink transmission of the first optical network unit, and detect whether there is a first coexistence conflict feature; in the case of no detection of the presence of the first coexistence conflict feature, determine that the first optical network unit that stopped uplink transmission for the most recent time is the target optical network unit that caused the coexistence conflict.

[0170] In some embodiments, the processing unit 501 is further used to: restore the uplink transmission of the second optical network unit, and detect whether there is a first coexistence conflict feature; the second optical network unit is the first optical network unit in the first optical network unit that has stopped uplink transmission;

[0171] In the case where the first coexistence conflict feature is detected, the second optical network unit that has most recently resumed uplink transmission is determined as the target optical network unit causing the coexistence conflict.

[0172] In some embodiments, the processing unit 501 is also used to: when the presence of the first coexistence conflict feature is detected, close the discovery window of the target passive optical network, and re-detect whether the first coexistence conflict feature exists; the target passive optical network is a passive optical network of the same type as the first optical network unit in the first passive optical network and the second passive optical network; when the presence of the first coexistence conflict feature is detected again, determine that the third optical network unit is the target optical network unit that causes the coexistence conflict; the third optical network unit is an optical network unit that is not online in the first optical network unit.

[0173] In some embodiments, the processing unit 501 is further configured to stop uplink transmission of the optical network unit in the second passive optical network when the first optical network unit does not exist.

[0174] In some embodiments, the processing unit 501 is specifically used to: determine the order in which each first optical network unit stops uplink transmission according to the access time of each first optical network unit accessing the optical line terminal; wherein the order in which each first optical network unit stops uplink transmission is negatively correlated with the access time corresponding to the first optical network unit;

[0175] According to the order in which each first optical network unit stops the uplink transmission, the uplink transmission of the first optical network units is stopped in sequence.

[0176] In some embodiments, the processing unit 501 is specifically used to: determine the order in which the second optical network units resume uplink transmission according to the time when the second optical network units stop uplink transmission; wherein the order in which each second optical network unit resumes uplink transmission is positively correlated with the time when the second optical network unit stops uplink transmission;

[0177] According to the order in which each second optical network unit resumes uplink transmission, the uplink transmission of the second optical network units is resumed in sequence.

[0178] In some embodiments, the first passive optical network is one of an Ethernet passive optical network and a gigabit passive optical network, and the second passive optical network is the other of the Ethernet passive optical network and the gigabit passive optical network;

[0179] The Ethernet passive optical network includes at least one of the following: 1G Ethernet passive optical network, 10G Ethernet passive optical network, and the gigabit passive optical network includes a 50G gigabit passive optical network; the 10G Ethernet passive optical network includes at least one of the following modes: 10G Ethernet passive optical network asymmetric mode, 10G Ethernet passive optical network symmetric mode.

[0180] In some embodiments, the sending unit 502 is used to send out warning information, where the warning information is used to prompt the existence of a coexistence conflict, and the warning information includes an identifier of a target optical network unit.

[0181] It should be noted that Figure 8 The units in the system may also be referred to as modules, for example, the sending unit may be referred to as a sending module. Figure 8 In the illustrated embodiment, the names of the various units may not be the names shown in the figure. For example, the sending unit may also be called a communication unit.

[0182] Figure 8 If each unit in the embodiment is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the various embodiments of the present application. The storage medium for storing computer software products includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0183] When the communication device 50 implements the functions of the integrated modules in the form of hardware, the present application provides a schematic diagram of the structure of the communication device. Fig. 9 As shown, the communication device 60 includes: a processor 602 , a communication interface 603 , and a bus 604 . Optionally, the communication device 60 may further include a memory 601 .

[0184] The processor 602 may be a device that implements or executes various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of the present application. The processor 602 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of the present application. The processor 602 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0185] The communication interface 603 is used to connect with other devices via a communication network, such as Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0186] The memory 601 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0187] As a possible implementation, the memory 601 may exist independently of the processor 602, and the memory 601 may be connected to the processor 602 via a bus 604 for storing instructions or program codes. When the processor 602 calls and executes the instructions or program codes stored in the memory 601, the optical network conflict detection method provided in the embodiment of the present application can be implemented.

[0188] In another possible implementation, the memory 601 may also be integrated with the processor 602 .

[0189] The bus 604 may be an extended industry standard architecture (EISA) bus, etc. The bus 604 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 9 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0190] Through the description of the above implementation methods, technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the optical line terminal is divided into different functional modules to complete all or part of the functions described above.

[0191] The embodiment of the present application also provides a computer-readable storage medium. All or part of the processes in the above method embodiments can be completed by computer instructions to instruct the relevant hardware, and the program can be stored in the above computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The computer-readable storage medium can be the memory or memory of any of the above embodiments. The above computer-readable storage medium can also be an external storage device of the above optical line terminal, such as a plug-in hard disk, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. equipped on the above optical line terminal. Further, the above computer-readable storage medium can also include both the internal storage unit of the above optical line terminal and an external storage device. The above computer-readable storage medium is used to store the above computer program and other programs and data required by the above optical line terminal. The above computer-readable storage medium can also be used to temporarily store data that has been output or is to be output.

[0192] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program product is run on a computer, the computer is enabled to execute any one of the optical network conflict detection methods provided in the above embodiments.

[0193] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other changes to the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0194] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0195] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An optical network conflict detection method, applied to an optical line terminal, wherein the optical line terminal is connected to a first passive optical network and a second passive optical network, and the transmission protocols of the first passive optical network and the second passive optical network are different, and the method comprises: In response to detecting the presence of the first coexistence conflict characteristic, stopping uplink transmission of the optical network unit in the second passive optical network; In the case of detecting that the first passive optical network has a second coexistence conflict characteristic, restoring the uplink transmission of the optical network unit in the second passive optical network according to a preset strategy, and detecting again whether the first passive optical network has the first coexistence conflict characteristic; wherein the coexistence conflict degree represented by the second coexistence conflict characteristic is less than the coexistence conflict degree represented by the first coexistence conflict characteristic; When the first coexistence conflict feature is detected again in the first passive optical network, the optical network unit that has restored uplink transmission most recently is determined to be the target optical network unit causing the coexistence conflict.

2. The method according to claim 1, characterized in that The first coexistence conflict feature includes at least one of the following: abnormal online status of the optical network unit, signal degradation, a bit error rate per unit time greater than a bit error rate threshold, and the presence of a long light alarm.

3. The method according to claim 1, characterized in that: The preset strategy includes at least one of the following: one-by-one recovery, group recovery, and dichotomy.

4. The method according to claim 1, characterized in that: The stopping of the uplink transmission of the optical network unit in the second passive optical network includes: Stop allocating upstream bandwidth to the optical network unit in the second passive optical network, and / Or, turn off the power of the optical transmitter of the optical network unit in the second passive optical network.

5. The method according to claim 1, characterized in that Before stopping the uplink transmission of the optical network unit in the second passive optical network, the method further includes: Determining whether there is a first optical network unit within a preset time period before the first coexistence conflict feature is detected; the first optical network unit is an optical network unit connected to the optical line terminal within the preset time period; In the case where the first optical network unit exists, stopping uplink transmission of the first optical network unit, and detecting whether the first coexistence conflict feature exists; In a case where the first coexistence conflict feature is not detected, the first optical network unit that has stopped uplink transmission most recently is determined to be the target optical network unit causing the coexistence conflict.

6. The method according to claim 5, characterized in that After determining that the first optical network unit that stopped uplink transmission most recently is the target optical network unit causing the coexistence conflict, the method further includes: Resuming uplink transmission of a second optical network unit, and detecting whether the first coexistence conflict feature exists; the second optical network unit is the first optical network unit in the first optical network unit that has stopped uplink transmission; In the case where the first coexistence conflict feature is detected, the second optical network unit that has most recently resumed uplink transmission is determined as the target optical network unit causing the coexistence conflict.

7. The method according to claim 5, characterized in that After stopping the uplink transmission of the first optical network unit and detecting whether the first coexistence conflict feature exists, the method further includes: When the first coexistence conflict feature is detected, closing the discovery window of the target passive optical network and detecting again whether the first coexistence conflict feature exists; the target passive optical network is a passive optical network of the same type as the first optical network unit in the first passive optical network and the second passive optical network; When the first coexistence conflict feature is detected again, a third optical network unit is determined to be the target optical network unit causing the coexistence conflict; the third optical network unit is an optical network unit that is not online in the first optical network unit.

8. The method according to claim 5, characterized in that The method further comprises: In the case where the first optical network unit does not exist, stopping the uplink transmission of the optical network unit in the second passive optical network is performed.

9. The method according to claim 5, characterized in that The stopping of the uplink transmission of the first optical network unit includes: Determine the order in which each of the first optical network units stops uplink transmission according to the access time of each of the first optical network units accessing the optical line terminal; wherein the order in which each of the first optical network units stops uplink transmission is negatively correlated with the access time corresponding to the first optical network unit; According to the order in which each of the first optical network units stops the uplink transmission, the uplink transmission of the first optical network units is stopped in sequence.

10. The method according to claim 6, characterized in that The restoring the uplink transmission of the second optical network unit includes: Determine the order in which the second optical network units resume uplink transmission according to the time when the second optical network units stop uplink transmission; wherein the order in which each of the second optical network units resumes uplink transmission is positively correlated with the time when the second optical network units stop uplink transmission; According to the order in which each of the second optical network units resumes uplink transmission, the uplink transmission of the second optical network units is resumed in sequence.

11. The method according to claim 1, characterized in that The first passive optical network is one of an Ethernet passive optical network and a gigabit passive optical network, and the second passive optical network is the other of the Ethernet passive optical network and the gigabit passive optical network; The Ethernet passive optical network includes at least one of the following: 1G Ethernet passive optical network, 10G Ethernet passive optical network, the gigabit passive optical network includes a 50G gigabit passive optical network; the 10G Ethernet passive optical network includes at least one of the following modes: 10G Ethernet passive optical network asymmetric mode, 10G Ethernet passive optical network symmetric mode.

12. The method according to any one of claims 1 to 11, characterized in that The method further comprises: An alarm message is issued, where the alarm message is used to prompt the existence of a coexistence conflict, and the alarm message includes an identifier of the target optical network unit.

13. A communication device, characterized in that: include: Processor and memory; The memory stores instructions executable by the processor; When the processor is configured to execute the instructions, the communication device implements the method according to any one of claims 1 to 12.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium comprises computer instructions, which, when executed on a computer, cause the computer to perform the method according to any one of claims 1 to 12.

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