WO2018219276A1 - 一种进行同步告警的方法及设备、计算机存储介质 - Google Patents

一种进行同步告警的方法及设备、计算机存储介质 Download PDF

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Publication number
WO2018219276A1
WO2018219276A1 PCT/CN2018/088895 CN2018088895W WO2018219276A1 WO 2018219276 A1 WO2018219276 A1 WO 2018219276A1 CN 2018088895 W CN2018088895 W CN 2018088895W WO 2018219276 A1 WO2018219276 A1 WO 2018219276A1
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Prior art keywords
synchronization
alarm
synchronization alarm
message
type
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PCT/CN2018/088895
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English (en)
French (fr)
Inventor
韩柳燕
胡新天
张德朝
王磊
李晗
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中国移动通信有限公司研究院
中国移动通信集团有限公司
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Publication of WO2018219276A1 publication Critical patent/WO2018219276A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/02—Standardisation; Integration
    • H04L41/0246—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a method and device for performing synchronous alarm, and a computer storage medium.
  • Time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Long Term Evolution (TD-LTE), Time Division Long Term Evolution), such as the wireless system
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • TD-LTE Time Division Long Term Evolution
  • TD-LTE Time Division Long Term Evolution
  • the wireless system the relative time difference between different base stations needs to be kept within a certain range, that is, the time synchronization requirement needs to be met. Otherwise, when mobile terminals such as mobile phones switch between different base stations, signals interfere with each other, resulting in a drop in call quality. Problems such as stringing and dropping calls.
  • the traditional method achieves time synchronization between different base stations by installing a Global Positioning System (GPS) satellite receiver.
  • GPS Global Positioning System
  • PON Passive Optical Network
  • OLT Optical Line Terminal
  • ONU Optical Network Unit
  • the time synchronization information is sent from the time source 101, reaches the OLT 102 through the transmission network, and reaches the ONU 103 through the optical fiber via the OLT, and the ONU 103 sets the time synchronization information.
  • the small base station 104 Provided to the small base station 104. Different small base stations 104 implement time synchronization by tracing to the same time source. The use of PON to transmit time synchronization information has become one of the solutions for transmitting time synchronization information to small base stations.
  • the synchronization problem of time and time synchronization information is solved.
  • the device In order to discover and handle faults in time, the device needs to have the ability to report alarms.
  • the existing PON network mainly carries services such as voice, Internet access, and video, and does not have the capability of synchronous alarm.
  • the PON network is composed of the OLT and the ONU.
  • the synchronization alarms generated on the ONU are transmitted to the OLT. After the OLT processes the alarms, the alarms are reported to the network management system.
  • the prior art does not solve the synchronization alarm between the ONU and the OLT.
  • the problem of delivery The lack of synchronization alarms can cause slow response after faults and difficult fault location, which makes the small base station unable to use the time synchronization information provided by the PON stably and reliably.
  • the present invention provides a method and a device for performing a synchronous alarm to solve the problem that the synchronous alarm transmission cannot be performed between the ONU and the OLT in the prior art.
  • a method for performing a synchronization alarm provided by the application includes:
  • the ONU After the status of the synchronization alarm is changed, the ONU generates a synchronization alarm message, where the synchronization alarm message includes a type identifier of the synchronization alarm and status information of the synchronization alarm.
  • the ONU sends a synchronization alarm message to the OLT, so that the OLT determines a synchronization alarm whose status changes according to the synchronization alarm message.
  • the synchronization alarm message includes:
  • the type identifier of the synchronization alarm whose status has changed and the status information of the synchronization alarm or
  • the type identifier of the synchronization alarm whose status is changed and the status information of the synchronization alarm and the type identifier of the status unchanged and the status information of the synchronization alarm.
  • the ONU determines the type identifier according to the following method:
  • the ONU determines the type identifier corresponding to the type of the synchronization alarm according to the type of the synchronization alarm and the correspondence between the type of the preset synchronization alarm and the type identifier.
  • the type identifier includes some or all of the following:
  • the synchronization management unit identifier corresponding to the synchronization alarm
  • the ONU sends a synchronization alarm message to the OLT, including:
  • the ONU determines its corresponding management channel according to the preset correspondence between the ONU and the management channel;
  • the ONU sends a synchronization alarm message to the OLT through the management channel.
  • a method for performing a synchronization alarm provided by the application includes:
  • the OLT receives the synchronization alarm message sent by the ONU, where the synchronization alarm message includes the type identifier of the synchronization alarm and the status information of the synchronization alarm.
  • the OLT determines a synchronization alarm whose status changes according to the synchronization alarm message.
  • the OLT determines, according to the synchronization alarm message, a synchronization alarm whose status changes, including:
  • the OLT determines the type of synchronization alarm whose status changes according to the following method:
  • the OLT identifies the type of the synchronization alarm in the synchronization alarm message as the type identifier of the synchronization alarm whose status changes, and the synchronization alarm changes according to the status.
  • Type identifies the type of synchronization alert that determines the change in state; or
  • the OLT determines the type of the synchronization alarm whose status changes according to the previously received synchronization alarm message.
  • the OLT determines, according to the type of the synchronization alarm whose status changes, the type of the synchronization alarm that determines the status change, including:
  • the type identifier includes some or all of the following:
  • the synchronization management unit identifier corresponding to the synchronization alarm
  • the OLT after receiving the synchronization alarm message sent by the ONU, the OLT further includes:
  • the OLT determines a management channel that receives the synchronization alarm message
  • the OLT determines the ONU corresponding to the management channel according to the preset correspondence between the ONU and the management channel.
  • An ONU for performing synchronous alarms includes:
  • the synchronization alarm message generating module is configured to generate a synchronization alarm message after the status of the synchronization alarm is changed, where the synchronization alarm message includes a type identifier of the synchronization alarm and status information of the synchronization alarm.
  • the sending module is configured to send a synchronization alarm message to the OLT, so that the OLT determines a synchronization alarm whose status changes according to the synchronization alarm message.
  • the synchronization alarm message includes:
  • the type identifier of the synchronization alarm whose status has changed and the status information of the synchronization alarm or
  • the type identifier of the synchronization alarm whose status is changed and the status information of the synchronization alarm and the type identifier of the status unchanged and the status information of the synchronization alarm.
  • the synchronization alarm message generating module is specifically configured to:
  • the type identifier corresponding to the type of the synchronization alarm is determined according to the type of the synchronization alarm and the correspondence between the type of the preset synchronization alarm and the type identifier.
  • the type identifier includes some or all of the following:
  • the synchronization management unit identifier corresponding to the synchronization alarm
  • the sending module is specifically configured to:
  • a synchronization alarm message is sent to the OLT through the management channel.
  • An OLT for performing synchronous alarms includes:
  • the receiving module is configured to receive a synchronization alarm message sent by the ONU, where the synchronization alarm message includes a type identifier of the synchronization alarm and status information of the synchronization alarm.
  • the determining module is configured to determine a synchronization alarm whose status changes according to the synchronization alarm message.
  • the determining module is specifically configured to:
  • the type identifier of the synchronization alarm in the synchronization alarm message is the type identifier of the synchronization alarm whose status is changed
  • the type identifier of the synchronization alarm in the synchronization alarm message is used as the type identifier of the synchronization alarm whose status is changed, and the synchronization alarm is changed according to the status.
  • the type identifier identifies the type of synchronization alert whose status has changed; or
  • the OLT determines the type of the synchronization alarm whose status changes according to the previously received synchronization alarm message.
  • the determining module is specifically configured to:
  • the type of the synchronization alarm whose status corresponding to the type identifier changed is determined according to the preset correspondence between the type of the synchronization alarm and the type identifier.
  • the type identifier includes some or all of the following:
  • the synchronization management unit identifier corresponding to the synchronization alarm
  • the determining module is further configured to:
  • the ONU corresponding to the management channel is determined according to the preset correspondence between the ONU and the management channel.
  • the computer storage medium provided in this embodiment stores therein computer executable instructions configured to perform the foregoing method for performing a synchronization alarm.
  • the ONU can generate a synchronization alarm message including the type identifier of the synchronization alarm and the status information of the synchronization alarm after the status of the synchronization alarm is changed, and the ONU can synchronize by the synchronization alarm message ONU.
  • the alarm is transmitted to the OLT, thus solving the problem that the synchronous alarm transmission cannot be performed between the ONU and the OLT in the prior art.
  • FIG. 1 is a schematic diagram of a network architecture for providing time synchronization of a small base station by using a PON according to an embodiment of the present application;
  • FIG. 2 is a schematic diagram of a method for performing a synchronization alarm according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of another method for performing a synchronization alarm according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a method for performing a synchronization alarm according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of an ONU performing synchronization alarm according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of an OLT for performing synchronization alarm according to an embodiment of the present disclosure.
  • FIG. 2 A method for performing a synchronization alarm provided by the present application is described in FIG. 2, and the method includes the following steps:
  • Step 201 After the state of the synchronization alarm is changed, the ONU generates a synchronization alarm message, where the synchronization alarm message includes a type identifier of the synchronization alarm and status information of the synchronization alarm.
  • Step 202 The ONU sends a synchronization alarm message to the OLT, so that the OLT determines a synchronization alarm whose status changes according to the synchronization alarm message.
  • the ONU can report to the OLT by using the synchronization alarm message, where the synchronization alarm message includes the type identifier of the synchronization alarm and the status information of the synchronization alarm.
  • the OLT determines the synchronization alarm that the status changes according to the synchronization alarm message, and the OLT can perform the corresponding synchronization alarm processing, for example, to perform synchronous alarm reporting on the network side management device.
  • the ONU informs the OLT of the type of the synchronization alarm and the status information of the synchronization alarm by using the synchronization alarm message, so that the OLT can determine the synchronization alarm whose status changes according to the synchronization alarm message. Therefore, the synchronization alarm is performed in the embodiment of the present application.
  • the method implements a synchronization alarm between the ONU and the OLT.
  • another method for performing a synchronization alarm includes:
  • Step 301 The OLT receives the synchronization alarm message sent by the ONU, where the synchronization alarm message includes a type identifier of the synchronization alarm and status information of the synchronization alarm.
  • Step 302 The OLT determines, according to the synchronization alarm message, a synchronization alarm whose status changes.
  • the OLT determines the synchronization alarm whose status changes. On the basis of this, the OLT can perform corresponding synchronous alarm processing, for example, reporting the type and status of the synchronous alarm whose status changes to the network-side management device.
  • the OLT can receive and synchronize the type and status information of the synchronization alarms reported by the ONU according to the synchronization alarm message sent by the ONU, and solve the problem that the synchronization alarm cannot be performed between the ONU and the OLT in the prior art.
  • the types of synchronization alarms include one or more of the following: frequency input reference source loss, clock loss of lock, synchronization processing hardware failure, frequency output module failure, Ethernet synchronization message channel (ESMC, Ethernet Synchronization Messaging) Channel) Packet loss, current reference source frequency performance (FREQ, Frequency) exceeded, reference source FREQ limit in priority list, PTP (Precision Time Protocol) detection frequency offset limit, frequency reference source switching , device frequency synchronization state switching, time loss, time input source loss, synchronous processing hardware failure, physical link alarm (PTP), Announce message loss, synchronization (Sync) or delayed response (Delay_Resp), message Alarms such as loss, slave port switching, super master clock (GM clock, Grand Master clock), and device time status switching.
  • the ONU receives the ESMC packet according to the preset frequency (for example, the ESMC packet is received once in a preset time). If the ESMC packet is not received within the set duration (for example, 5 seconds), the ONU determines that the synchronization alarm state occurs.
  • the preset frequency for example, the ESMC packet is received once in a preset time. If the ESMC packet is not received within the set duration (for example, 5 seconds), the ONU determines that the synchronization alarm state occurs.
  • the ONU continues to detect the ESMC packet containing the frequency synchronization quality information, if the ONU is within the set duration (for example, 5 seconds) After the ONU determines that the impact of the synchronization alarm indication problem becomes smaller or the importance becomes lighter, the ONU determines that the synchronization alarm status is changed, that is, the synchronization alarm of the ESMC packet loss is degraded; if the ONU passes the set duration again (for example, If the ONU is unable to receive the ESMC packet, the ONU determines that the synchronization alarm status is changed, that is, the synchronization alarm is lost when the ESMC packet is lost. If the ESMC packet is correctly received within the timeout period (for example, 10 seconds), the ONU determines that the synchronization alarm state is changed, that is, the synchronization alarm of the ESMC packet loss is cleared.
  • the set duration for example, 5 seconds
  • the ONU determines that the synchronization alarm state has changed, that is, the synchronization alarm of the clock loss is generated. If the ONU detects that the clock phase-locked loop returns to normal operation, the ONU determines that the synchronization alarm state changes. , that is, the synchronization alarm of the clock loss of lock is eliminated.
  • the ONU can detect whether the clock phase locked loop works normally by detecting the quality of the frequency signals such as 2MHz, 2Mbits/s and 8000Hz outputted by the clock phase-locked loop, detecting the phase difference between the input signal and the feedback signal of the phase-locked loop.
  • the ONU determines that the synchronization alarm state has changed, that is, the synchronization alarm of the time loss is generated; after the time-locked synchronization alarm is generated, if the ONU detects the interface master and slave related to the time loss of the lock.
  • the ONU is changed when the attribute such as the working status changes, or the parameter such as the quality level of the tracking source related to the time loss is detected, or the quality of the tracking source related to the time loss is detected is decreased, and the source port is changed. It is determined that the synchronization alarm state is changed, that is, the parameter of the synchronization alarm with time loss is changed.
  • the ONU can detect the time tracking status in the output time of the TOD (Time of Day) and the PTP packet outputted by the time module, and check whether the time is normally locked.
  • the state change of the synchronization alarm includes one or more of the following: a synchronization alarm generation, a synchronization alarm elimination, a synchronization alarm upgrade, a synchronization alarm degradation, and a synchronization alarm parameter change, wherein the synchronization alarm parameter changes.
  • the attributes including the synchronization alarm (such as the relevant time including the synchronization alarm, the location of the generated information, etc.) and the cause of the synchronization alarm change.
  • the synchronization alarm message includes information indicating a state change of the synchronization alarm.
  • the status information of the synchronization alarm includes some or all of the following:
  • the status information indicating the synchronization alarm is generated, and the synchronization alarm is generated by a specific flag bit in the synchronization alarm message.
  • the character of a certain bit in the status information is set to 1 to indicate that the status information indicates that the synchronization alarm is generated.
  • the status information indicating the synchronization alarm is eliminated.
  • the specific alarm flag in the synchronization alarm message indicates that the synchronization alarm is eliminated.
  • the character of a certain bit in the status information is set to 0, which is used to indicate that the status information indicates that the synchronization alarm is eliminated; Using different values of the same flag bit to indicate synchronous alarm generation and synchronous alarm elimination;
  • the status information of the synchronization alarm is updated.
  • the specific alarm flag in the synchronization alarm message indicates that the synchronization alarm is upgraded.
  • the character of a certain bit in the status information is set to a, which is used to indicate that the status information indicates that the synchronization alarm is at the previous level. On the basis of a rise in level;
  • the status information indicating that the synchronization alarm is degraded may indicate that the synchronization alarm is degraded by a specific flag bit in the synchronization alarm message.
  • the character of a certain bit in the status information is set to b, and is used to indicate that the status information indicates that the synchronization alarm is at the previous level.
  • the lower level can use the different values of the same flag to indicate synchronous alarm upgrade and synchronous alarm degradation;
  • the status information indicating that the parameter of the synchronization alarm changes may be preset by the correspondence between the changed synchronization alarm parameter and the value of the specific flag bit. For example, when the character of a certain bit is set to the character A, the synchronous alarm is indicated.
  • the cause changes to cause A; the parameter that changes and the change of the parameter can also be carried in the synchronization alarm message.
  • the OLT determines, according to the information indicating the state change of the synchronization alarm in the synchronization alarm message, the specific state change of the synchronization alarm in which the state change occurs, where the information indicating the state change of the synchronization alarm is displayed.
  • the meaning represented can be agreed by the OLT and the ONU.
  • the synchronization alarm message includes: a type identifier of the synchronization alarm whose status is changed and status information of the synchronization alarm; or a type identifier of the synchronization alarm whose status changes, and status information of the synchronization alarm, and a type identifier whose status has not changed. And status information of the synchronization alarm.
  • the ONU may carry the type identifier of the synchronization alarm whose state has changed only in the synchronization alarm message, and does not carry the type identifier of the state that has not changed, and accordingly, the OLT generates the ONU in this manner.
  • the type identifier of the synchronization alarm in the synchronization alarm message is used as the type identifier of the synchronization alarm whose status is changed, and the ONU can also carry the type identifier and status of the synchronization alarm whose status changes in the synchronization alarm message.
  • the type identifier of the change is not changed.
  • the OLT determines the type of the synchronization alarm whose status changes according to the previously received synchronization alarm message.
  • the OLT determines, according to the synchronization alarm message, a synchronization alarm whose status changes, including:
  • the OLT determines the type of synchronization alarm whose status changes according to the following method:
  • the OLT identifies the type of the synchronization alarm in the synchronization alarm message as the type identifier of the synchronization alarm whose status changes, and the synchronization alarm changes according to the status.
  • Type identifies the type of synchronization alert that determines the change in state; or
  • the OLT determines the type of the synchronization alarm whose status changes according to the previously received synchronization alarm message.
  • the OLT uses the type identifier in the synchronization alarm message as the status identifier of the synchronization alarm whose status changes, and then determines the status according to the status identifier.
  • the type of the synchronization alarm that has changed; if the synchronization alarm message includes the type identifier of the synchronization alarm whose status has changed and the type identifier of the synchronization alarm whose status has not changed, the OLT determines the synchronization of the status change according to the previously received synchronization alarm message. Type of alarm.
  • the OLT determines the changed synchronization alarm according to the received synchronization alarm message and its own synchronization alarm list. The comparison may be performed using one or more received synchronization alert messages.
  • the synchronization alarm list of the OLT itself is related to the synchronization alarm information received by the OLT. Specifically, the OLT maintains a synchronization alarm list for the ONU, and the OLT maintains and updates the synchronization alarm list according to the previously received synchronization alarm information. After the OLT receives the synchronization alarm message, the OLT synchronizes the alarm status and the synchronization alarm in the synchronization alarm message. The status of the synchronization alarms stored in the list is compared. If the status of a synchronization alarm is different from the alarm list in the alarm message, it is determined that the alarm status changes.
  • the OLT synchronizes the synchronization alarm message.
  • the alarm state is compared with the initial state of the synchronization alarm in the synchronization alarm list. If the status of a synchronization alarm is different from the synchronization alarm list in the alarm message, it is determined that the alarm status changes.
  • the ONU determines the type identifier according to the following method: the ONU determines the type identifier corresponding to the type of the synchronization alarm whose status changes according to the type of the synchronization alarm and the preset relationship between the type of the synchronization alarm and the type identifier.
  • the ONU may determine the type identifier according to the following method: after determining the type of the synchronization alarm whose status changes, the ONU determines the type identifier corresponding to the type of the synchronization alarm according to the correspondence between the type of the synchronization alarm and the type identifier. For example, the type identifier of the synchronization alarm that is unlocked by the preset time is the identifier A. After the status of the synchronization alarm that is determined by the ONU to lose the lock at the preset time is changed, the type identifier of the synchronization alarm that determines the state change is the identifier A. . In addition to determining the type identification corresponding to the type of synchronization alarm that the status transmission changes, the ONU can also determine the type identification corresponding to the type of synchronization alarm whose status has not changed.
  • the type identifier includes some or all of the following:
  • the synchronization management unit identifier corresponding to the synchronization alarm
  • the type identifier may include a preset specific identifier, a message category code for indicating that the message is a synchronization alarm message, a synchronization management unit identifier corresponding to the synchronization alarm, and/or a part of the alarm number corresponding to the synchronization alarm or All.
  • the preset specific identifier is used to indicate that the message carrying the specific identifier is a synchronization alarm message, and the specific identifier has a one-to-one correspondence with the type of the synchronization alarm, wherein an interaction between the existing ONU and the OLT can be used.
  • the identifiers that are not used in the messages used are used in this application to indicate the type of synchronization alarms whose status changes; it is also possible to use the existing identifiers in the messages used by the existing ONUs and OLTs to interact, except in this The program is given a new meaning.
  • the specific setting method of the specific identifier and its meaning may be agreed by the ONU and the OLT, or may be allocated by the standardization organization.
  • the OLT may determine that the message is a synchronization alarm message after receiving the message including the preset specific identifier, and according to the specific identifier and synchronization.
  • the correspondence of the types of alarms determines the type of synchronization alarms whose status changes.
  • the message category code may be a preset identifier for indicating that the message is an alarm message, where the alarm message includes a synchronization alarm message and other messages for performing an alarm, and the existing identifier for indicating the alarm message may be used as the identifier.
  • Message category code In use, the synchronization management unit identity can be used in conjunction with the message class code to indicate that the message is a synchronization alert message.
  • the message category code itself may not have a one-to-one correspondence with the type of the synchronization alarm.
  • the OLT can determine that the message is a synchronization alarm message after the message category code SSS is included in the determination message.
  • the specific setting method of the message category code and its meaning can be agreed by the ONU and the OLT, or distributed by the standardization organization.
  • the synchronization management unit identifier corresponding to the synchronization alarm refers to the identifier of the synchronization management unit used by the OLT when performing time synchronization with the ONU, wherein the synchronization management unit may include, for example, a time delivery management unit, a time state management unit, and a frequency according to different information of the bearer. Quality management unit.
  • the identifier of the synchronization management unit may be set in the following manner: the identifier of the time delivery management unit is 131, the identifier of the time state management unit is 427, and the identifier of the frequency quality management unit is 428.
  • the specific setting method of the synchronization management unit identifier and its meaning may be agreed by the ONU and the OLT, or may be allocated by the standardization organization.
  • the synchronization management unit identifier may be used as the type identifier of the synchronization alarm. If a synchronization management unit identifier corresponds to multiple types of synchronization alarms, the synchronization management unit identifier and the alarm may be used. The number distinguishes the type of synchronization alarm.
  • the ONU may add only the type and status information of the synchronization alarm that changes the state in the at least one synchronization alarm corresponding to the same synchronization management unit identifier to the synchronization alarm message.
  • the ONU may also add the type of all the synchronization warnings corresponding to the same synchronization management unit identifier and the current status as the status information of the synchronization alarm to the synchronization alarm message, regardless of whether the status of the synchronization alarm changes, for example, synchronization management.
  • the ONU can add the message category code and the synchronization management unit identifier to the synchronization alarm message, and carry the clock loss, time loss, and ESMC in the synchronization alarm message. Status information of lost messages.
  • the synchronization management unit identifier carried in the synchronization alarm message may be preset. For example, in the above example, if the ONU is configured to generate the synchronization alarm message each time, the synchronization management unit identifier A and the corresponding synchronization alarm state information are required to be carried. Each time the ONU generates the synchronization alarm message, it carries the status information of the synchronization management unit identifier A corresponding to the clock loss, time loss, and ESMC packet loss, regardless of whether the status of the synchronization alarm changes.
  • the alarm number is a number generated by counting the type of the synchronous alarm from 0 (or 1, or other values).
  • the present application does not limit the range and manner of numbering the type of the synchronous alarm.
  • the alarm number may be the same.
  • the number of multiple synchronization alarms corresponding to a synchronization management unit identifier is numbered, and the types of all synchronization alarms may also be numbered.
  • the specific setting method of the alarm number and its meaning can be agreed by the ONU and the OLT, or distributed by the standardization organization.
  • the alarm number may be set in the following manner: for numbering multiple types of synchronous alarms corresponding to the same message category code, the types of multiple synchronous alarms may be uniquely matched according to the message category code and the alarm number;
  • the type of the multiple synchronization alarms corresponding to the same synchronization management unit identifier may be numbered, and the types of the multiple synchronization alarms may be uniquely matched according to the synchronization management unit identifier and the alarm number.
  • the alarm number may be indicated in the synchronization alarm message by:
  • the number of the alarm number is added to the synchronization alarm message, or the alarm number is characterized in an indirect or implicit manner in the synchronization alarm message, for example, by using variable or fixed N bits to characterize the type of the synchronization alarm.
  • the number of the alarm number can be placed in the agreed position
  • the agreed bit can be set to an agreed value to indicate the type of the synchronous alarm corresponding to the bit.
  • the N bits are the alarm information table, wherein the bit length N of the alarm information table is greater than or equal to the total number (M) of the types of synchronization alarms corresponding to the synchronization management unit corresponding to the alarm information table.
  • the first M bits of the alarm information table are in one-to-one correspondence with the types of M synchronization alarms corresponding to the synchronization management unit.
  • the alarm number of the synchronization alarm corresponding to the synchronization management unit may be pre-defined from 0 to M-1, and the bits 0 to M-1 in the alarm information table correspond to the alarm numbers 0 to M-1. Specifically, the bit 0 corresponds to the synchronization alarm corresponding to the alarm number 0, the bit 1 corresponds to the synchronization alarm corresponding to the alarm number No. 1, and so on.
  • N is greater than M
  • N for the remaining N-M bits in the status information table, one of them may be defined as a reserved field and the other part as a custom field.
  • M-N is greater than or equal to 2
  • bits M to M+L are defined as reserved fields
  • bits M+L+1 to N are defined as custom fields.
  • the custom fields correspond to the custom sync alarms one by one.
  • the alarm number of the custom synchronization alarm ranges from M+L+1 to N. Where L, N, and M are integers greater than or equal to zero.
  • the ONU can use the bit information to indicate the alarm number under the synchronization management unit corresponding to each bit in the synchronization alarm, and the OLT can obtain the alarm number under the synchronization management unit corresponding to each bit in the synchronization alarm. And the alarm number corresponding to the synchronization alarm is obtained by the alarm number.
  • the type identifier corresponding to the type of the synchronization alarm indicating that the state changes is adopted by using a preset specific identifier:
  • the type identifier corresponding to the type of the synchronization alarm whose state is changed may be used according to the preset specific identifier.
  • the type identifier may be determined by the following method: a mapping table corresponding to the type of the specific identifier and the type of the synchronization alarm is set as shown in Table 1.
  • the ONU may determine the type of the synchronization alarm according to Table 1.
  • the specific identifier identifies the specific identifier as the type of the synchronization alarm.
  • the ONU determines that the type of the synchronization alarm is changed, the ONU carries the specific identifier "identity A" corresponding to the type of the synchronization alarm of the clock loss in the synchronization alarm message, to indicate that the message is a synchronization alarm message.
  • the type of synchronization alarm whose status changes is clock loss.
  • the message type code used to indicate that the message is an alarm message and the synchronization management unit identifier corresponding to the synchronization alarm indicate a type identifier:
  • the ONU may indicate that the message is a synchronization alarm message by using the message class code and the synchronization management unit identifier in the synchronization alarm message, and identify the type of the synchronization alarm indicating that the state changes by the synchronization management unit, where the synchronization management unit identifies
  • the types of synchronous alarms correspond one-to-one.
  • the message class code may be set by setting a specific value of a certain position M to N (for example, 1) as the message class code, and the OLT determines the message when determining that the specific value of the position M of the message is N.
  • the type identifier preset the correspondence between the synchronization management unit identifier and the type of the synchronization alarm as shown in Table 2. After determining the synchronization alarm whose status changes, you can determine it according to Table 2. The synchronization management unit identifier corresponding to the type of the synchronization alarm, and the determined synchronization management unit identifier is used as the type identifier of the synchronization alarm.
  • the ONU determines that the type of the synchronization alarm that is changed by the state is the clock loss, the ONU carries the specific synchronization management unit identifier “synchronization management unit identifier A” corresponding to the message category code and the clock-locked synchronization alarm type in the synchronization alarm message.
  • the type of the synchronization alarm indicating that the message is a synchronous alarm message and the status changes is a clock loss lock.
  • the message type code for indicating that the message is the synchronization alarm message, the synchronization management unit identifier corresponding to the synchronization alarm, and the alarm number corresponding to the synchronization alarm indicate the type identifier corresponding to the type of the synchronization alarm whose status is changed:
  • the ONU may indicate that the message is a synchronous alarm message by using the message category code and the synchronization management unit identifier in the synchronization alarm message, and indicate the type of the synchronization alarm whose status changes by the synchronization management unit identifier and the alarm number corresponding to the synchronization alarm.
  • the at least one synchronization management unit identifier corresponds to the type of the at least one synchronization alarm, and the alarm number between the types of different synchronization alarms corresponding to the same synchronization management unit identifier is not repeated.
  • the alarm number can be set by the following method: the alarm numbers between all synchronous alarm types are not duplicated, or the alarm numbers between the types of synchronous alarms with the same synchronization management unit identifier are not repeated; The alarm numbers between the types of synchronization alarms identified by the management unit are not duplicated, and the alarm numbers between the types of synchronization alarms having the same synchronization management unit identifier are cumulatively numbered from 1. Further, the alarm number may be numbered starting from a value other than 1, for example, 0.
  • the ONU determines that the type of the synchronization alarm is changed, the ONU carries the message category code in the synchronization alarm message, and the specific synchronization management unit identifier corresponding to the synchronization alarm type that is lost with the ESMC packet.
  • the identifier B" and the alarm number "2" are used to indicate that the message is a synchronous alarm message, and the type of the synchronization alarm whose status changes is ESMC packet loss.
  • the alarm number can be represented by the bit information in the synchronization alarm message.
  • the OLT determines, according to the type of the synchronization alarm whose status changes, the type of the synchronization alarm that determines the status change, including:
  • the type of the synchronization alarm whose status corresponding to the type identifier of the synchronization alarm whose status is changed is determined according to the preset correspondence between the type of the synchronization alarm and the type identifier.
  • the OLT after receiving the synchronization alarm message, determines the type of the synchronization alarm according to the type identifier in the synchronization alarm message and the correspondence between the type of the synchronization alarm and the type identifier that the preset state changes.
  • the OLT may determine that the message is a synchronization alarm message after determining that the message identifier includes a specific identifier or a message category code, and then the category identifier determines the type of the synchronization alarm that indicates that the status indicated by the synchronization alarm message changes.
  • the category identifier is set by the ONU. For the specific setting method, refer to the description in the embodiment of the present application.
  • the synchronization alert message includes a message sequence number.
  • the synchronization alarm message generated by the ONU may include a message sequence number, where the message sequence number may be set by using the following method: adding 1 to the message sequence number of the synchronization alarm message sent by the ONU, after the ONU is initialized The message number of the synchronization alarm message starts from 1.
  • the OLT determines, according to the message sequence number in the synchronization alarm message, whether the synchronization alarm message is lost, and the OLT determines whether the received synchronization alarm message is continuous according to the message sequence number in the synchronization alarm message.
  • the ONU carries the message sequence number in the synchronization alarm message, and the message sequence number is incremented by 1 on the basis of the message sequence number of the synchronization alarm message sent by the ONU, and the OLT receives the synchronization alarm message according to the message.
  • the sequence number determines whether the synchronization alarm message is lost.
  • the OLT may determine, according to the message sequence number, the synchronization alarm message received by the excess money and the previous synchronization alarm message, and then compare the two consecutive synchronization alarm messages to determine the synchronized synchronization alarm.
  • the ONU sends a synchronization alarm message to the OLT, and the ONU determines the corresponding management channel according to the preset correspondence between the ONU and the management channel.
  • the ONU sends a synchronization alarm message to the OLT through the management channel.
  • an OLT can access at least one ONU. If the OLT accesses multiple ONUs, the OLT can determine the corresponding relationship between the ONU and the management channel. Then, the ONU sends a synchronization alarm message to the OLT by using its corresponding management channel.
  • the OLT further includes: determining a management channel that receives the synchronization alarm message; and determining, according to a preset correspondence between the ONU and the management channel, an ONU corresponding to the management channel.
  • the OLT can determine the ONU that sends the synchronization alarm message according to the management channel that receives the synchronization alarm message and the corresponding relationship between the ONU and the management channel.
  • the ONU that performs the synchronization alarm is determined from among the multiple ONUs that are accessed. For example, if the corresponding number of the management channel is associated with the ONU, the OLT can determine the ONU that sends the synchronization alarm message according to the number of the management channel that receives the synchronization alarm message when receiving the synchronization alarm message.
  • the ONU sends a synchronization alarm message to the OLT through the device management channel.
  • the ONU can send a synchronization alarm message to the OLT through the device management channel, where the device management channel can be pre-established.
  • the OLT can specify the device management channel used by the ONU, and the ONU uses the specified The device management channel sends a synchronization alarm message to the OLT.
  • Device management channels include physical or logical channels used to carry or host operational, operational, and management information.
  • the device management channel in the PON includes the following: OAM (Operation Administration and Maintenance) channel, Physical Layer Operations (Administration and Maintenance) channel, and optical network unit management control. Interface (OMCI, ONU Management and Control Interface) channel.
  • OAM Operaation Administration and Maintenance
  • OMCI optical network unit management control. Interface
  • the embedded OAM channel refers to an overhead field specified by a Transmission Convergence (TC) frame, including a checksum, a dynamic bandwidth scheduling, and a device identifier.
  • the PLOAM channel refers to the PLOAM message body in the TC frame, and the PLOAM message body has a fixed length and a message body format.
  • the OMCI channel is a GPON-encapsulated mode (GEM, G-PON Encapsulation Mode) frame with a specified Port-ID port number (ID).
  • GEM G-encapsulated mode
  • ID Port-ID port number
  • the OMCI message is encapsulated in the GEM frame.
  • the OMCI message includes a basic message set and an extended message set.
  • the OLT uses the PLOAM message to specify a channel with a dedicated Port-ID for the ONU, and establishes an OMCI logical management channel between the OLT and the ONU, and encapsulates the synchronization management message during transmission.
  • the transmission is performed using the specified Port-ID.
  • Step 401 After determining that the status of the synchronization alarm is changed, the ONU determines the type identifier of the synchronization alarm whose status changes according to the type of the synchronization alarm, and determines the status information of the synchronization alarm.
  • Step 402 The ONU sends a synchronization alarm message carrying the type identifier and status information of the synchronization alarm with the status change to the OLT.
  • Step 403 After receiving the synchronization alarm message, the OLT determines the ONU that sends the synchronization alarm message according to the management channel that receives the synchronization alarm message, and determines the synchronization alarm whose status changes according to the synchronization alarm message, and then ends the process.
  • the OLT can perform the synchronization alarm processing according to the synchronization alarm whose status changes. For example, the OLT can report the ONU that sends the synchronization alarm message to the network management device, the type of the synchronization alarm whose status changes, and the status of the synchronization alarm. Variety.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the two synchronization alarms can be encapsulated for the status change of the two synchronization alarms.
  • the type identifiers of the two synchronization alarms are respectively selected as the type identifiers of the clock loss and The type identifier of the time-locked alarm; in addition, the two synchronization alarm messages respectively carry the status information of the synchronization alarm; after the ONU encapsulates the content to form two synchronization alarm messages, the ONU uses the OLT management channel to transmit two types of synchronization alarm messages.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the synchronization alarms sent by the two states can be encapsulated into a synchronous alarm message.
  • the type identifier is the message category code indicating that the message is an alarm, and the synchronization alarm is generated.
  • the message carries the type identifier of the clock loss and the time loss lock (for example, the type of the synchronization alarm indicated by the specific identifier) and the status information.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the synchronization alarm message carries the message category code indicating that the message is an alarm message;
  • the synchronization management unit identifier corresponding to the lock, the time lost lock, and the ESMC packet loss is the "synchronization management unit identifier 427", and the corresponding synchronization management unit identifier "synchronization management unit identifier 427" is carried in the synchronization alarm message;
  • the third bit position of the packet loss is set to 0, and the other bits without corresponding alarms are set to 0; the message sequence number of the synchronization alarm message is increased by 1 based on the message sequence number of the previous synchronization alarm message; the ONU is encapsulated.
  • the synchronization alarm message is transmitted by using the OLT management channel.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the synchronization alarm message carries the message indicating that the message is an alarm message. If the synchronization management unit is identified as the synchronization management unit identifier 427, the synchronization alarm message carries the corresponding synchronization management unit identifier "synchronization management unit identifier 427".
  • the first and second bit positions in the alarm status table with 224 bits in the synchronization alarm message for indicating clock loss and time loss are set to 0, indicating that the third bit of the ESMC packet loss is set to 0, and the other bits that do not have corresponding alarms are set to 0; the message sequence number is incremented by 1 based on the message sequence number of the previous synchronization alarm message; the ONU encapsulates the above content.
  • the synchronization alarm message is transmitted by using the OLT management channel;
  • the OLT can determine the clock loss and time loss after receiving the synchronization alarm message in the fourth embodiment.
  • the one and second bit positions are set to 0 by 1, whereby the OLT determines the synchronization of the clock loss and the time lost lock.
  • the synchronization alarm message carries the message category code indicating that the message is an alarm message;
  • the synchronization management unit identifier corresponding to the lock, the time lost lock, and the ESMC packet loss is the "synchronization management unit identifier 427", and the corresponding synchronization management unit identifier "synchronization management unit identifier 427" is carried in the synchronization alarm message;
  • Indicates the alarm number and sets the first bit position indicating the clock loss of lock in the alarm status table with 224 bits in the synchronization alarm message to 0, indicating that the second bit position of the time loss is set to 1, the third bit position indicating that the ESMC packet is lost is set to 0, and the other bits without the corresponding alarm are set to 0;
  • the message sequence number is increased by 1 based on the message sequence number of the previous synchronization alarm message;
  • the ONU encapsulates the
  • the OLT can determine the second bit used to represent the time loss after receiving the synchronization alarm message of the fifth embodiment.
  • the position is set to 1 by 0, according to which the OLT determines that the time-locked synchronization alarm is generated.
  • the synchronization alarm message carries the message category code indicating that the message is an alarm message; If the synchronization management unit identifier corresponding to the loss of the ESMC packet loss is the "synchronization management unit identifier 427", the synchronization alarm message carries the corresponding synchronization management unit identifier "synchronization management unit identifier 427"; The alarm number sets the first and second bit positions in the alarm status table with 224 bits in the synchronization alarm message to indicate that the clock is out of lock and time lost, and is set to 0 and 1, and will represent the ESMC.
  • the third bit of the packet loss is set to 1, and the other bits without corresponding alarms are set to 0; the message sequence number is incremented by 1 based on the message sequence number of the previous synchronization alarm message; the ONU encapsulates the above content to form a synchronization alarm message. Afterwards, the synchronization alarm message is transmitted by using the OLT management channel;
  • the OLT can determine the second bit used to indicate the loss of the ESMC message after receiving the synchronization alarm message of the sixth embodiment.
  • the bit position is set to 1 by 0, according to which the OLT determines the synchronization alarm for the loss of the ESMC message at the time.
  • an embodiment of the present application further provides an ONU that performs a synchronization alarm.
  • the principle of the ONU is similar to that of the embodiment of the present application. Therefore, the implementation of the ONU can be referred to the implementation of the method of the present application.
  • an ONU that performs a synchronization alarm includes:
  • the synchronization alarm message generating module 501 is configured to generate a synchronization alarm message after the status of the synchronization alarm is changed, where the synchronization alarm message includes a type identifier of the synchronization alarm and status information of the synchronization alarm.
  • the sending module 502 is configured to send a synchronization alarm message to the OLT, so that the OLT determines a synchronization alarm whose status changes according to the synchronization alarm message.
  • the synchronization alarm message includes:
  • the type identifier of the synchronization alarm whose status has changed and the status information of the synchronization alarm or
  • the type identifier of the synchronization alarm whose status is changed and the status information of the synchronization alarm and the type identifier of the status unchanged and the status information of the synchronization alarm.
  • the synchronization alarm message generating module 501 is specifically configured to:
  • the type identifier corresponding to the type of the synchronization alarm is determined according to the type of the synchronization alarm and the correspondence between the type of the preset synchronization alarm and the type identifier.
  • the type identifier includes some or all of the following:
  • the synchronization management unit identifier corresponding to the synchronization alarm
  • the sending module 502 is specifically configured to:
  • a synchronization alarm message is sent to the OLT through the management channel.
  • the embodiment of the present application further provides an OLT that performs synchronization alarm.
  • the principle of the OLT is similar to the method of the embodiment of the present application. Therefore, the implementation of the OLT can be referred to the implementation of the method of the present application, and the repeated description is not repeated.
  • an OLT for performing synchronization alarms includes:
  • the receiving module 601 is configured to receive a synchronization alarm message sent by the ONU, where the synchronization alarm message includes a type identifier of the synchronization alarm and status information of the synchronization alarm.
  • the determining module 602 is configured to determine a synchronization alarm whose status changes according to the synchronization alarm message.
  • the determining module 602 is specifically configured to:
  • the type identifier of the synchronization alarm in the synchronization alarm message is the type identifier of the synchronization alarm whose status is changed
  • the type identifier of the synchronization alarm in the synchronization alarm message is used as the type identifier of the synchronization alarm whose status is changed, and the synchronization alarm is changed according to the status.
  • the type identifier identifies the type of synchronization alert whose status has changed; or
  • the OLT determines the type of the synchronization alarm whose status changes according to the previously received synchronization alarm message.
  • the determining module 602 is specifically configured to:
  • the type of the synchronization alarm whose status corresponding to the type identifier changed is determined according to the preset correspondence between the type of the synchronization alarm and the type identifier.
  • the type identifier includes some or all of the following:
  • the synchronization management unit identifier corresponding to the synchronization alarm
  • the determining module 602 is further configured to:
  • the ONU corresponding to the management channel is determined according to the preset correspondence between the ONU and the management channel.
  • the ONU can generate a synchronization alarm message including the type identifier of the synchronization alarm and the status information of the synchronization alarm after the status of the synchronization alarm is changed, and the ONU can transmit the synchronization alarm to the OLT through the synchronization alarm message, thereby solving the problem.
  • the problem of synchronous alarm transmission between the ONU and the OLT cannot be performed.

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Abstract

本申请公开了一种进行同步告警的方法及设备、存储介质，用以解决现有技术中无法在ONU和OLT之间进行同步告警的问题。该方法包括：ONU在同步告警的状态发生改变后，生成同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；ONU向OLT发送同步告警消息，以使OLT根据所述同步告警消息确定状态发生改变的同步告警。ONU能够在同步告警的状态发生改变后，生成包括同步告警的类型标识和同步告警的状态信息的同步告警消息，通过同步告警消息ONU能够将同步告警传递至OLT，因此解决了现有技术中无法在ONU和OLT之间进行同步告警的问题。

Description

一种进行同步告警的方法及设备、计算机存储介质
相关申请的交叉引用
本申请基于申请号为201710398279.7、申请日为2017年05月31日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及通信技术领域，特别涉及一种进行同步告警的方法及设备、计算机存储介质。
背景技术
面向时分同步码分多址(TD-SCDMA，Time Division-Synchronous Code Division Multiple Access)、宽带码分多址(WCDMA，Wideband Code Division Multiple Access)、分时长期演进(TD-LTE，Time Division Long Term Evolution)等无线制式，不同基站间的相对时间差需要保持在一定范围内，即需要满足时间同步要求，否则，手机等移动终端在不同基站间切换时，会发生信号相互干扰，造成通话质量下降、串线和掉话等问题。传统方法通过安装全球定位系统(GPS，Global Positioning System，)卫星接收器的方式在不同基站间实现时间同步。
无源光纤网络(PON，Passive Optical Network)作为一种解决最后一公里的光纤接入技术，已经广泛应用于现网。在PON中，光线路终端(OLT，Optical Line Terminal)与光网络单元(ONU，Optical Network Unit)通过光纤连接。在利用地面网络为小基站传递时间同步信息的方案中，如图1所示，时间同步信息从时间源101发出后，通过传输网络到达OLT102，并经 由OLT通过光纤到达ONU103，ONU103将时间同步信息提供到小基站104。不同小基站104通过溯源到相同时间源实现时间同步。利用PON传递时间同步信息已成为向小基站传递时间同步信息的解决方案之一。
解决了时间时间同步信息的同步问题，为及时发现并处理故障，设备需要具备上报告警的能力。然而，现有的PON网络主要承载语音、上网和视频等业务，不具备同步告警能力。同时，PON网络由OLT和ONU两级结构组成，ONU端发生的同步告警需要传递到OLT，之后由OLT处理后将告警上报至网管系统，但是现有技术尚未解决同步告警在ONU和OLT之间的传递问题。缺乏同步告警，会造成故障后响应慢，故障定位难等问题，使小基站无法稳定、可靠的使用PON提供的时间同步信息。
综上，现有技术中无法在ONU和OLT之间进行同步告警的传递。
发明内容
本申请提供一种进行同步告警的方法及设备，用以解决现有技术中无法在ONU和OLT之间进行同步告警传递的问题。
本申请提供的一种进行同步告警的方法，包括：
ONU在同步告警的状态发生改变后，生成同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；
ONU向OLT发送同步告警消息，以使OLT根据同步告警消息确定状态发生改变的同步告警。
可选地，同步告警消息包括：
状态发生改变的同步告警的类型标识和同步告警的状态信息；或
状态发生改变的同步告警的类型标识和同步告警的状态信息，以及状态未发生改变的类型标识和同步告警的状态信息。
可选地，ONU根据以下方法确定类型标识：
ONU根据同步告警的类型，以及预设的同步告警的类型与类型标识的 对应关系确定同步告警的类型对应的类型标识。
可选地，类型标识包括下列中的部分或全部：
预设的特定标识；
用于表示消息为告警消息的消息类别码；
同步告警对应的同步管理单元标识；
同步告警对应的告警编号。
可选地，ONU向OLT发送同步告警消息，包括：
ONU根据预设的ONU与管理通道的对应关系，确定自身对应的管理通道；
ONU通过管理通道向OLT发送同步告警消息。
本申请提供的一种进行同步告警的方法，包括：
OLT接收ONU发送的同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；
OLT根据同步告警消息确定状态发生改变的同步告警。
可选地，OLT根据同步告警消息确定状态发生改变的同步告警，包括：
OLT根据以下方法确定状态发生改变的同步告警的类型：
若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识，则OLT将同步告警消息中的同步告警的类型标识作为状态发生改变的同步告警的类型标识，根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型；或
若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识和状态未发生改变的类型标识，则OLT根据之前收到的同步告警消息确定状态发生改变的同步告警的类型。
可选地，OLT根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型，包括：
根据预设的状态发生改变的同步告警的类型与类型标识的对应关系，确定类型标识对应的状态发生改变的同步告警的类型。
可选地，类型标识包括下列中的部分或全部：
预设的特定标识；
用于表示消息为告警消息的消息类别码；
同步告警对应的同步管理单元标识；
同步告警对应的告警编号。
可选地，OLT接收ONU发送的同步告警消息之后，还包括：
OLT确定收到同步告警消息的管理通道；
OLT根据预设的ONU与管理通道的对应关系，确定管理通道对应的ONU。
本申请提供的一种进行同步告警的ONU，包括：
同步告警消息生成模块，配置为在同步告警的状态发生改变后，生成同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；
发送模块，配置为向OLT发送同步告警消息，以使OLT根据同步告警消息确定状态发生改变的同步告警。
可选地，同步告警消息包括：
状态发生改变的同步告警的类型标识和同步告警的状态信息；或
状态发生改变的同步告警的类型标识和同步告警的状态信息，以及状态未发生改变的类型标识和同步告警的状态信息。
可选地，同步告警消息生成模块具体配置为：
根据同步告警的类型，以及预设的同步告警的类型与类型标识的对应关系确定同步告警的类型对应的类型标识。
可选地，类型标识包括下列中的部分或全部：
预设的特定标识；
用于表示消息为告警消息的消息类别码；
同步告警对应的同步管理单元标识；
同步告警对应的告警编号。
可选地，发送模块具体配置为：
根据预设的ONU与管理通道的对应关系，确定自身对应的管理通道；
通过管理通道向OLT发送同步告警消息。
本申请提供的一种进行同步告警的OLT，包括：
接收模块，配置为接收ONU发送的同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；
确定模块，配置为根据同步告警消息确定状态发生改变的同步告警。
可选地，确定模块具体配置为：
根据以下方法确定状态发生改变的同步告警的类型：
若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识，则将同步告警消息中的同步告警的类型标识作为状态发生改变的同步告警的类型标识，根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型；或
若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识和状态未发生改变的类型标识，则OLT根据之前收到的同步告警消息确定状态发生改变的同步告警的类型。
可选地，确定模块具体配置为：
根据预设的同步告警的类型与类型标识的对应关系，确定状态发生改变的类型标识对应的状态发生改变的同步告警的类型。
可选地，类型标识包括下列中的部分或全部：
预设的特定标识；
用于表示消息为告警消息的消息类别码；
同步告警对应的同步管理单元标识；
同步告警对应的告警编号。
可选地，确定模块还配置为：
确定收到同步告警消息的管理通道；
根据预设的ONU与管理通道的对应关系，确定管理通道对应的ONU。
本实施例提供的一种计算机存储介质，其中存储有计算机可执行指令，该计算机可执行指令配置执行上述进行同步告警的方法。
根据本申请实施例提供的进行同步告警的方法，ONU能够在同步告警的状态发生改变后，生成包括同步告警的类型标识和同步告警的状态信息的同步告警消息，通过同步告警消息ONU能够将同步告警传递至OLT，因此解决了现有技术中无法在ONU和OLT之间进行同步告警传递问题。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供通过PON对小基站进行时间同步的网络架构示意图；
图2为本申请实施例提供的一种进行同步告警的方法步骤示意图；
图3为本申请实施例提供的另一种进行同步告警的方法步骤示意图；
图4为本申请实施例提供的一种进行同步告警的方法的流程示意图；
图5为本申请实施例提供的一种进行同步告警的ONU的结构示意图；
图6为本申请实施例提供的一种进行同步告警的OLT的结构示意图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
以图2说明本申请提供的一种进行同步告警的方法，该方法包括以下步骤：
步骤201：ONU在同步告警的状态发生改变后，生成同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；
步骤202：ONU向OLT发送同步告警消息，以使OLT根据同步告警消息确定状态发生改变的同步告警。
在本申请实施例提供的进行同步告警的方法中，ONU在同步告警的状态发生改变后，能够通过同步告警消息向OLT报告，其中，同步告警消息包括同步告警的类型标识和同步告警的状态信息，OLT在收到同步告警消息后根据同步告警消息确定状态发生改变的同步告警，据此OLT能够进行相应的同步告警处理，例如向网络侧管理设备进行同步告警上报。采用以上方法，ONU通过同步告警消息将同步告警的类型以及同步告警的状态信息向OLT进行告知，使得OLT能够根据同步告警消息确定状态发生改变的同步告警，因此本申请实施例中的进行同步告警的方法实现了ONU与OLT之间的同步告警。
如图3所示，本申请实施例提供的另一种进行同步告警的方法，包括：
步骤301：OLT接收ONU发送的同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；
步骤302：OLT根据同步告警消息确定状态发生改变的同步告警。
在本申请实施例提供的进行同步告警的方法中，OLT在收到ONU发送的包括同步告警消息包括同步告警的类型标识和同步告警的状态信息的同步告警消息后，确定状态发生变化的同步告警，在此基础之上，OLT可以进行相应的同步告警处理，例如向网络侧管理设备上报状态发生变化的同步告警的类型和状态。采用以上方法，OLT能够收到并根据ONU发送的同步告警消息确定ONU上报的同步告警的类型和状态信息，解决了现有技术中无法在ONU和OLT之间进行同步告警的问题。
本申请实施例中，同步告警的类型包括以下的一种或几种：频率输入参考源丢失、时钟失锁、同步处理硬件故障、频率输出模块故障、以太网同步消息信道(ESMC，Ethernet Synchronization Messaging Channel)报文丢失、当前参考源频率性能(FREQ，Frequency)越限、优先级列表中参考源FREQ越限、精确时间同步协议(PTP，Precision Time Protocol)检测频偏越限、频率参考源倒换、设备频率同步状态切换、时间失锁、时间输入源丢失、同步处理硬件故障、物理链路告警(PTP)、预告(Announce)报文丢失、同步(Sync)或延迟响应(Delay_Resp)、报文丢失、从属(Slave)端口倒换、超级主时钟(GM时钟，Grand Master时钟，)切换和设备时间状态切换等告警。
下面举例说明几种常见的同步告警的类型及其同步告警的状态变化：
1、ESMC报文丢失
ONU按照预设的频率收到ESMC报文(例如预设1秒接收一次ESMC报文)，若在设定时长(例如为5秒)内没有收到ESMC报文，则ONU确定同步告警状态发生改变，即ESMC报文丢失的同步告警产生；在ESMC报文丢失的同步告警产生后，ONU继续检测包含频率同步质量信息的ESMC报文，若ONU在设定时长(例如为5秒)内收到部分ESMC报文，ONU在确定同步告警指示问题的影响变小或重要性变轻后，确定同步告警 状态发生改变，即ESMC报文丢失的同步告警降级；若ONU再次经过设定时长(例如为5秒)无法收到ESMC报文，ONU在确定同步告警指示问题的影响变大或重要性变重后，确定同步告警状态发生改变，即ESMC报文丢失的同步告警升级；若ONU在设定时长(例如为10秒)内能够正确接收到ESMC报文，则ONU确定同步告警状态发生改变，即ESMC报文丢失的同步告警清除。
2、时钟失锁
若ONU检测到时钟锁相环无法正常工作时，ONU确定同步告警状态发生改变，即时钟失锁的同步告警产生；若ONU检测到时钟锁相环恢复正常工作时，ONU确定同步告警状态发生改变，即时钟失锁的同步告警消除。其中，ONU可以通过检测时钟锁相环输出的2MHz、2Mbits/s和8000Hz等频率信号质量，检测锁相环输入信号和反馈信号相差变化等方式，判断时钟锁相环是否正常工作。
3、时间失锁
若ONU检测到无法锁定时间，则ONU确定同步告警状态发生改变，即时间失锁的同步告警产生；在时间失锁的同步告警产生后，若ONU检测到与时间失锁相关的接口主、从工作状态等属性改变，或者检测到与时间失锁相关的跟踪源质量等级等参数改变，或者检测到与时间失锁相关的跟踪源质量等级下降、源端口工作状态转变等告警原因改变，则ONU确定同步告警状态发生改变，即时间失锁的同步告警的参数发生变化。其中，ONU可以通过检测时间模块输出的TOD(Time of Day，当前时刻)、PTP报文等时间输出报文中的时间跟踪状态，检测时间是否正常锁定。
本申请实施例中，同步告警的状态变化包括以下的一种或几种：同步告警产生、同步告警消除、同步告警升级、同步告警降级以及同步告警的参数发生变化，其中同步告警的参数发生变化包括同步告警的属性(例如 包括同步告警的相关时间、产生位置等信息)和同步告警的原因发生变化。
在同步告警消息中，包括表示同步告警的状态变化的信息，具体来说，同步告警的状态信息包括下列中的部分或全部：
表示同步告警产生的状态信息，可以通过同步告警消息中的特定标志位表示同步告警产生，例如将状态信息中某一比特位的字符设置为1，用于表示该状态信息表示同步告警产生；
表示同步告警消除的状态信息，可以通过同步告警消息中的特定标志位表示同步告警消除，例如将状态信息中某一比特位的字符设置为0，用于表示该状态信息表示同步告警消除；可以利用同一个标志位的不同值分别表示同步告警产生和同步告警消除；
表示同步告警升级的状态信息，可以通过同步告警消息中的特定标志位表示同步告警升级，例如将状态信息中某一比特位的字符设置为a，用于表示该状态信息表示同步告警在此前等级的基础上上升一级；
表示同步告警降级的状态信息，可以通过同步告警消息中的特定标志位表示同步告警降级，例如将状态信息中某一比特位的字符设置为b，用于表示该状态信息表示同步告警在此前等级的基础上下降一级；可以利用同一个标志位的不同值分别表示同步告警升级和同步告警降级；
表示同步告警的参数发生变化的状态信息，可以预设发生改变的同步告警参数与特定标志位的值的对应关系，例如，设定某一比特位的字符设置为字符A时，表示同步告警的发生原因改变为原因A；也可以在同步告警消息中携带发生变化的参数以及参数发生的变化。
以上举例的表示同步告警的状态变化的信息的种类以及设置表示同步告警的状态变化的信息的方法只是举例说明，除上述举例之外的其他表示同步告警的状态变化的信息的种类和设置方法也属于本申请的范围。
本申请实施例中，OLT在收到同步告警消息后，根据同步告警消息中 表示同步告警的状态变化的信息确定发生状态改变的同步告警的具体状态变化，其中，表示同步告警的状态变化的信息所代表的含义可以由OLT与ONU进行约定。
可选地，同步告警消息包括：状态发生改变的同步告警的类型标识和同步告警的状态信息；或状态发生改变的同步告警的类型标识和同步告警的状态信息，以及状态未发生改变的类型标识和同步告警的状态信息。
本申请实施例中，ONU可以只在同步告警消息中携带状态发生改变的同步告警的类型标识，而不携带状态未发生改变的类型标识，相应地，OLT在收到ONU以此种方式生成的同步告警消息后，将同步告警消息中的同步告警的类型标识作为状态发生改变的同步告警的类型标识，以及将；ONU也可以在同步告警消息中携带状态发生改变的同步告警的类型标识和状态未发生改变的类型标识，相应地，OLT在收到ONU以此种方式生成的同步告警消息后，根据之前收到的同步告警消息确定状态发生改变的同步告警的类型。
可选地，OLT根据同步告警消息确定状态发生改变的同步告警，包括：
OLT根据以下方法确定状态发生改变的同步告警的类型：
若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识，则OLT将同步告警消息中的同步告警的类型标识作为状态发生改变的同步告警的类型标识，根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型；或
若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识和状态未发生改变的类型标识，则OLT根据之前收到的同步告警消息确定状态发生改变的同步告警的类型。
本申请实施例中，若同步告警消息只包括状态发生改变的同步告警的类型标识，则OLT将同步告警消息中的类型标识作为状态发生改变的同步 告警的状态标识，进而根据该状态标识确定状态发生改变的同步告警的类型；若同步告警消息包括状态发生改变的同步告警的类型标识和状态未发生改变的同步告警的类型标识，则OLT根据之前收到的同步告警消息确定状态发生改变的同步告警的类型。
在实施中，OLT根据收到的同步告警消息，和自身的同步告警列表对比确定发生改变的同步告警。可以利用收到的一个或多个同步告警消息进行比对。其中，OLT自身的同步告警列表和OLT之前收到的同步告警信息相关。具体地，OLT自身为ONU维护同步告警列表，OLT根据之前收到的同步告警信息维护并更新同步告警列表，当OLT收到同步告警消息后，OLT将同步告警消息中的同步告警状态与同步告警列表中存储的同步告警状态进行对比，若一个同步告警的状态在告警消息中和同步告警列表中不一样，确定该告警状态发生变化。
另外，若OLT此前没有收到同步告警消息，则OLT所维护的同步告警列表为初始状态(例如，设置同步告警列表中同步告警的初始状态为没有产生报警)，OLT将同步告警消息中的同步告警状态与同步告警列表中同步告警的初始状态进行比对，若一个同步告警的状态在告警消息中和同步告警列表中不一样，确定该告警状态发生变化。
可选地，ONU根据以下方法确定类型标识：ONU根据同步告警的类型，以及预设的同步告警的类型与类型标识的对应关系确定状态发生改变的同步告警的类型对应的类型标识。
本申请实施例中，ONU可以根据以下方法确定类型标识：ONU在确定状态发生改变的同步告警的类型后，根据同步告警的类型与类型标识的对应关系确定同步告警的类型对应的类型标识。例如，预设时间失锁的同步告警对应的类型标识为标识A，则ONU在确定预设时间失锁的同步告警的状态发生改变后，确定该状态改变的同步告警对应的类型标识为标识A。 除了确定状态发射改变的同步告警的类型对应的类型标识外，ONU还可以确定状态未发生改变的同步告警的类型对应的类型标识。
可选地，类型标识包括下列中的部分或全部：
预设的特定标识；
用于表示消息为告警消息的消息类别码；
同步告警对应的同步管理单元标识；
同步告警对应的告警编号。
本申请实施例中，类型标识可以包括预设的特定标识、用于表示消息为同步告警消息的消息类别码、同步告警对应的同步管理单元标识和/或同步告警对应的告警编号中的部分或者全部。
下面分别介绍以上几种类型标识的组成部分：
1、预设的特定标识
预设的特定标识用于表示携带该特定标识的消息为同步告警消息，且特定标识与同步告警的类型具有一一对应关系的类型标识，其中，可以使用现有的ONU和OLT之间交互所使用的消息中没有使用的标识在本申请中使用以表示状态发生变化的同步告警的类型；也可以使用现有的ONU和OLT之间交互所使用的消息中已有的标识，只不过在本方案中被赋予了新的含义。特定标识具体的设定方法及其含义可以由ONU与OLT进行约定，或者由标准化组织进行分配。
实际操作中，若ONU将预设的特定标识置于同步告警消息中，则OLT可以在收到包含预设的特定标识的消息后，确定该条消息为同步告警消息，并根据特定标识与同步告警的类型的对应关系确定状态发生变化的同步告警的类型。
2、消息类别码
消息类别码可以是预设的用于表示该条消息为告警消息的标识，其中 告警消息包括同步告警消息和其他的用于进行告警的消息，可以使用现有的用于表示告警消息的标识作为消息类别码。在使用中，可以将同步管理单元标识与消息类别码共同使用以表示该消息为同步告警消息。消息类别码本身可以不与同步告警的类型具有一一对应的关系。
实际操作中，若ONU在同步告警消息中加入消息类别码SSS，则OLT在确定消息中包含消息类别码SSS后即可确定该消息为同步告警消息。消息类别码具体的设定方法及其含义可以由ONU与OLT进行约定，或者由标准化组织进行分配。
3、同步管理单元标识
同步告警对应的同步管理单元标识是指OLT在向ONU进行时间同步时使用的同步管理单元的标识，其中根据承载的信息不同，同步管理单元例如可以包括时间传递管理单元、时间状态管理单元和频率质量管理单元。例如可以采用以下方式设置同步管理单元的标识：时间传递管理单元的标识为131，时间状态管理单元的标识为427，频率质量管理单元的标识为428。同步管理单元标识具体的设定方法及其含义可以由ONU与OLT进行约定，或者由标准化组织进行分配。
若同步管理单元标识与同步告警的类型一一对应，则可以将同步管理单元标识作为同步告警的类型标识；若一个同步管理单元标识对应多个同步告警的类型，可以使用同步管理单元标识和告警编号对同步告警的类型进行区分。
在实施中，若使用同步管理单元标识作为类型标识的一部分，ONU可以只将与同一个同步管理单元标识对应的至少一个同步警告中的状态发生变化的同步告警的类型和状态信息加入同步告警消息；ONU也可以将与同一个同步管理单元标识对应的全部同步警告的类型和当前状态作为同步告警的状态信息加入到同步告警消息中，而不论这些同步告警的状态是否发 生改变，例如，同步管理单元标识A对应时钟失锁、时间失锁和ESMC报文丢失，则ONU可以将消息类别码和同步管理单元标识加入同步告警消息，并在同步告警消息中携带时钟失锁、时间失锁和ESMC报文丢失的状态信息。
另外，可以预设同步告警消息中携带的同步管理单元标识，例如在上例中，若设定ONU每次生成同步告警消息时需要携带同步管理单元标识A及其对应的同步告警的状态信息，则ONU每次生成同步告警消息时都携带同步管理单元标识A对应时钟失锁、时间失锁和ESMC报文丢失的状态信息，而不论这些同步告警的状态是否发生改变。
4、同步告警对应的告警编号
告警编号是指将同步告警的类型从0(或1，或者其他值)开始计数所产生的编号，其中，本申请不对同步告警的类型进行编号的范围和方式进行限定，例如可以仅对与同一个同步管理单元标识对应的多个同步告警的类型进行编号，也可以对全部同步告警的类型进行编号。告警编号具体的设定方法及其含义可以由ONU与OLT进行约定，或者由标准化组织进行分配。
本申请实施例中可以采用以下方式设置告警编号：针对与同一个消息类别码对应的多个同步告警的类型进行编号，则多个同步告警的类型可以根据消息类别码和告警编号进行唯一对应；也可以针对与同一个同步管理单元标识对应的多个同步告警的类型进行编号，则多个同步告警的类型可以根据同步管理单元标识和告警编号进行唯一对应。
本申请实施例中，可以通过以下方式在同步告警消息中表示告警编号：
将告警编号的数字加入同步告警消息，或者在同步告警消息中通过间接或隐性方式表征告警编号，例如通过可变的或固定的N个比特用来表征 同步告警的类型。
举例来说，若直接在同步告警消息中携带告警编号，可以将告警编号的数字置于约定的位置；
若通过特定比特位表示告警编号，可以将约定的比特位设置为约定的数值，以表示该比特位对应的同步告警的类型。例如，为方便描述称N个比特为告警信息表，其中，告警信息表的比特长度N大于等于该告警信息表对应的同步管理单元所对应的同步告警的类型的总个数(M)。告警信息表的前M个比特位与对应同步管理单元下的M个同步告警的类型一一对应。可以预先定义同步管理单元对应的同步告警的告警编号为从0到M-1，则，告警信息表中的比特位0到M-1对应告警编号0到M-1。具体地，比特位0对应0号告警编号对应的同步告警，比特位1对应1号告警编号对应的同步告警，以此类推。对于N大于M的情况，对于状态信息表中的其余N-M个比特位，可以定义其中一部分为保留字段，另一部分为自定义字段。例如，M-N大于等于2时，比特位M到M+L定义为保留字段，比特位M+L+1到N定义为自定义字段。自定义字段与自定义同步告警一一对应。自定义同步告警的告警编号取值范围为M+L+1到N。其中，L、N、M均为大于等于零的整数。
通过上述方式，ONU可以通过比特位信息表示同步告警中每个比特位对应的同步管理单元下的告警编号，OLT能够比特位信息获知同步告警中每个比特位对应的同步管理单元下的告警编号，并通过告警编号获知同步告警对应的告警编号。
下面举例说明三种设置状态发生改变的同步告警的类型对应的类型标识的方式：
方式一，采用预设的特定标识表示状态发生改变的同步告警的类型对应的类型标识：
步骤201中，可以根据预设的特定标识作为状态发生改变的同步告警的类型对应的类型标识。可以采用以下方法确定类型标识：预设如表1所示的特定标识与同步告警的类型的对应关系表，ONU在确定状态发生变化的同步告警后，可以根据表1确定同步告警的类型对应的特定标识，将确定的特定标识作为同步告警的类型标识。
特定标识 同步告警的类型
标识A 时钟失锁
标识B 时间失锁
标识C ESMC报文丢失
…… ……
表1
若ONU确定状态发生变化的同步告警的类型为时钟失锁，则ONU在同步告警消息中携带时钟失锁的同步告警类型对应的特定标识“标识A”，以表示该条消息为同步告警消息，且状态发生变化的同步告警的类型为时钟失锁。
方式二，采用用于表示消息为告警消息的消息类别码和同步告警对应的同步管理单元标识表示类型标识：
步骤201中，ONU可以在同步告警消息中通过消息类别码和同步管理单元标识表示该消息为同步告警消息，并通过同步管理单元标识表示状态发生变化的同步告警的类型，其中同步管理单元标识与同步告警的类型一一对应。可以采用以下方法设置消息类别码：设定某一位置M的特定数值为N(例如为1)作为消息类别码，则OLT在判断某一消息的位置M的特定数值为N时，确定该消息为同步告警消息；可以采用以下方法确定类型标识：预设如表2所示的同步管理单元标识与同步告警的类型的对应关系，则在确定状态发生变化的同步告警后，可以根据表2确定同步告警的类型 对应的同步管理单元标识，将确定的同步管理单元标识作为同步告警的类型标识。
同步管理单元标识 同步告警的类型
同步管理单元标识A 时钟失锁
同步管理单元标识B 时间失锁
同步管理单元标识C ESMC报文丢失
…… ……
表2
若ONU确定状态发生变化的同步告警的类型为时钟失锁，则ONU在同步告警消息中携带消息类别码和时钟失锁的同步告警类型对应的特定同步管理单元标识“同步管理单元标识A”，以表示该条消息为同步告警消息，且状态发生变化的同步告警的类型为时钟失锁。
方式三，采用用于表示消息为同步告警消息的消息类别码、同步告警对应的同步管理单元标识和同步告警对应的告警编号表示状态发生改变的同步告警的类型对应的类型标识：
步骤201中，ONU可以在同步告警消息中通过消息类别码和同步管理单元标识表示该消息为同步告警消息，并通过同步管理单元标识以及同步告警对应的告警编号表示状态发生变化的同步告警的类型，其中的至少一个同步管理单元标识对应至少一个同步告警的类型，同一个同步管理单元标识对应的不同同步告警的类型之间的告警编号不重复。
可以采用以下方法确定使用的类型标识：预设如表3所示的同步管理单元标识以及告警编号与同步告警的类型的对应关系，则在确定状态发生变化的同步告警后，可以根据表2确定同步告警的类型对应的同步管理单元标识和告警编号，将同步管理单元标识和告警编号的组合作为状态发生变化的同步告警的类型标识。
在表3中，可以采用以下方法设置告警编号：全部同步告警类型之间的告警编号不重复，或者，具有相同同步管理单元标识的同步告警的类型之间的告警编号不重复；若具有相同同步管理单元标识的同步告警的类型之间的告警编号不重复，则具有相同同步管理单元标识的同步告警的类型之间的告警编号从1开始累计进行编号。另外，告警编号也可以从1以外的值，例如0开始累计进行编号。
Figure PCTCN2018088895-appb-000001
表3
若ONU确定状态发生变化的同步告警的类型为ESMC报文丢失，则ONU在同步告警消息中携带消息类别码，以及携带ESMC报文丢失的同步告警类型对应的特定同步管理单元标识“同步管理单元标识B”和告警编号“2”，以表示该条消息为同步告警消息，且状态发生变化的同步告警的类型为ESMC报文丢失。其中，可以通过同步告警消息中的比特位信息表示告警编号。
可选地，OLT根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型，包括：
根据预设的同步告警的类型与类型标识的对应关系，确定状态发生改变的同步告警的类型标识对应的状态发生改变的同步告警的类型。
本申请实施例中，OLT在收到同步告警消息后，根据同步告警消息中的类型标识以及预设的状态发生改变的同步告警的类型与类型标识的对应关系确定同步告警的类型。
在实施中，OLT可以在确定某一消息中包括具有特定标识或者消息类别码的类别标识后确定该消息为同步告警消息，之后类别标识确定同步告警消息所指示的状态发生变化的同步告警的类型，其中类别标识由ONU进行设置，具体的设置方法参见本申请实施例中的说明。
可选地，同步告警消息包括消息序号。
本申请实施例中，ONU生成的同步告警消息可以包括消息序号，其中消息序号，可以采用以下方法设置消息序号：在此前ONU发送的同步告警消息的消息序号的基础上加1，在ONU初始化后，同步告警消息的消息序号从1开始起算。
可选地，OLT根据同步告警消息中的消息序号判断同步告警消息是否发生丢失，以及OLT根据同步告警消息中的消息序号确定收到的同步告警消息是否连续。
本申请实施例中，由于ONU在同步告警消息中携带了消息序号，且消息序号在此前ONU发送的同步告警消息的消息序号的基础上加1，则OLT在收到同步告警消息后，根据消息序号判断同步告警消息是否发生丢失。另外，OLT可以根据消息序号确定多钱收到的同步告警消息和此前一个同步告警消息，进而比对这两个连续的同步告警消息，以确定发生变化的同步告警。
可选地，ONU向OLT发送同步告警消息，包括：ONU根据预设的ONU与管理通道的对应关系，确定自身对应的管理通道；ONU通过管理通道向OLT发送同步告警消息。
本申请实施例中，如图1所示，一个OLT可以接入至少一个ONU，若 OLT接入多个ONU，为了使OLT确定进行同步告警的ONU，可以预设ONU与管理通道的对应关系，则ONU使用自身对应的管理通道向OLT发送同步告警消息。
可选地，OLT接收ONU发送的同步告警消息之后，还包括：确定收到同步告警消息的管理通道；根据预设的ONU与管理通道的对应关系，确定管理通道对应的ONU。
本申请实施例中，OLT在收到同步告警消息时，可以根据收到同步告警消息的管理通道，以及预设的ONU与管理通道的对应关系确定发送该同步告警消息的ONU，由此OLT可以从接入的多个ONU中确定进行同步告警的ONU。例如，预设管理通道的编号与ONU的对应关系，则OLT在收到同步告警消息时根据接收该同步告警消息的管理通道的编号可以确定发送该同步告警消息的ONU。
可选地，ONU通过设备管理通道向OLT发送同步告警消息。
本申请实施例中，ONU可以通过设备管理通道向OLT发送同步告警消息，其中，设备管理通道可以预先建立，建立设备管理通道后，OLT可以向ONU指定其使用的设备管理通道，ONU使用指定的设备管理通道向OLT发送同步告警消息。
设备管理通道包括用来传递或承载操作、运行和管理信息的物理或逻辑通道。例如，在PON中设备管理通道包括以下几种：嵌入操作维护管理(OAM，Operation Administration and Maintenance)通道、物理层操作管理和维护(PLOAM，Physical Layer Operations,Administration and Maintenance)通道和光网络单元管理控制接口(OMCI，ONU Management and Control Interface)通道。其中，嵌入OAM通道指采用传输汇聚(TC，Transmission Convergence)帧内指定的开销字段，包括校验、动态带宽调度、设备标识等字段。PLOAM通道指采用TC帧中的PLOAM消息体，PLOAM消息体 具有固定的长度和消息体格式。OMCI通道指采用指定Port-ID端口编号(ID，IDentity)的GPON封装方式(GEM，G-PON Encapsulation Mode)帧，在GEM帧中封装OMCI消息。OMCI消息包括基础消息集和扩展消息集。
例如，在PON系统中，ONU初始化时，OLT利用PLOAM报文为ONU指定具有专用Port-ID的通道，建立一条在OLT和ONU之间的OMCI逻辑管理通道，在传输时，将同步管理消息封装在GEM帧中，利用指定的Port-ID进行传输。
下面以图4说明本申请实施例中ONU向OLT进行同步告警的具体步骤：
步骤401：ONU确定同步告警的状态发生变化后，根据同步告警的类型确定状态发生变化的同步告警的类型标识，以及确定同步告警的状态信息；
步骤402：ONU向OLT发送携带有状态发生变化的同步告警的类型标识和状态信息的同步告警消息；
步骤403：OLT在收到同步告警消息后，根据接收同步告警消息的管理通道确定发送该同步告警消息的ONU，以及根据同步告警消息确定状态发生变化的同步告警，之后结束本流程。
其中，在步骤403之后，OLT可以根据状态发生变化的同步告警进行同步告警处理，例如OLT可以向网络管理设备上报发送该同步告警消息的ONU以及状态发生变化的同步告警的类型和同步告警的状态变化。
下面举例说明本申请实施例中ONU向OLT进行同步告警的方式：
实施例一：
若设备发生时钟失锁，且同时引发时间失锁，可以针对两个同步告警的状态变化分别封装两条同步告警消息，两条同步告警消息的类型标识分别选择为时钟失锁对应的类型标识和时间失锁对应的类型标识；此外，两 条同步告警消息中分别携带同步告警的状态信息；ONU在封装上述内容形成两条同步告警消息后，利用OLT管理通道传递两种同步告警消息。
实施例二：
若设备发生时钟失锁，且同时引发时间失锁，可以将两个状态发送变化的同步告警封装为一条同步告警消息，其中，类型标识为表示该消息为告警的消息类别码，并在同步告警消息中同时携带时钟失锁和时间失锁的类型标识(例如通过特定标识表示的同步告警的类型)和状态信息；ONU在封装上述内容形成同步告警消息后，利用OLT管理通道传递同步告警消息。
实施例三：
若设备发生时钟失锁，且同时引发时间失锁，但未出现ESMC报文丢失，可以采用以下方法封装同步告警消息：在同步告警消息中携带表示消息为告警消息的消息类别码；若时钟失锁、时间失锁以及ESMC报文丢失对应的同步管理单元标识为“同步管理单元标识427”，则在同步告警消息中携带对应的同步管理单元标识“同步管理单元标识427”；若使用比特位表示告警编号，则将同步告警消息中的具有224个比特位的告警状态表中用于表示时钟失锁和时间失锁的第一个和第二个比特位位置置为1，以及将表示ESMC报文丢失的第三个比特位位置置为0，而其他无对应告警的比特都置为0；同步告警消息的消息序号在前次同步告警消息的消息序号的基础上增加1；ONU在封装上述内容形成同步告警消息后，利用OLT管理通道传递同步告警消息。
实施例四：
若设备由时钟失锁变为正常状态，同时时间失锁变为正常状态，但未出现ESMC报文丢失，可以采用以下方法封装同步告警消息：在同步告警消息中携带表示消息为告警消息的消息类别码；若时钟失锁、时间失锁以 及ESMC报文丢失对应的同步管理单元标识为“同步管理单元标识427”，则在同步告警消息中携带对应的同步管理单元标识“同步管理单元标识427”；若使用比特位表示告警编号，则将同步告警消息中的具有224个比特位的告警状态表中用于表示时钟失锁和时间失锁的第一个和第二个比特位位置置为0，表示ESMC报文丢失的第三个比特置为0，而其他无对应告警的比特都置为0；消息序号在前次同步告警消息的消息序号的基础上增加1；ONU在封装上述内容形成同步告警消息后，利用OLT管理通道传递同步告警消息；
若OLT根据此前收到的实施例三中的同步告警消息更新了同步告警的状态表，则OLT在收到实施例四的同步告警消息后能够确定用于表示时钟失锁和时间失锁的第一个和第二个比特位位置由1被置为0，据此，OLT确定时钟失锁和时间失锁的同步告警消除。
实施礼例五：
若设备未发生时钟失锁，而发生时间失锁，但未出现ESMC报文丢失，可以采用以下方法封装同步告警消息：在同步告警消息中携带表示消息为告警消息的消息类别码；若时钟失锁、时间失锁以及ESMC报文丢失对应的同步管理单元标识为“同步管理单元标识427”，则在同步告警消息中携带对应的同步管理单元标识“同步管理单元标识427”；若使用比特位表示告警编号，则将同步告警消息中具有224个比特位的告警状态表中用于表示时钟失锁的第一个比特位位置置为0，表示时间失锁的第二个比特位位置置为1，表示ESMC报文丢失的第三个比特位置置为0，而其他无对应告警的比特都置为0；消息序号在前次同步告警消息的消息序号的基础上增加1；ONU在封装上述内容形成同步告警消息后，利用OLT管理通道传递同步告警消息；
若OLT根据此前收到的实施例四中的同步告警消息更新了同步告警的 状态表，则OLT在收到实施例五的同步告警消息后能够确定用于表示时间失锁的第二个比特位位置由0被置为1，据此，OLT确定时间失锁的同步告警产生。
实施例六：
若设备未发生时钟失锁，而发生时间失锁，并且出现ESMC报文丢失，可以采用以下方法封装同步告警消息：在同步告警消息中携带表示消息为告警消息的消息类别码；若时钟失锁、时间失锁以及ESMC报文丢失对应的同步管理单元标识为“同步管理单元标识427”，则在同步告警消息中携带对应的同步管理单元标识“同步管理单元标识427”；若使用比特位表示告警编号，则将同步告警消息中具有224个比特位的告警状态表中用于表示时钟失锁和时间失锁的第一个和第二个比特位位置置为0和1，以及将表示ESMC报文丢失的第三个比特置为1，而其他无对应告警的比特都置为0；消息序号在前次同步告警消息的消息序号的基础上增加1；ONU在封装上述内容形成同步告警消息后，利用OLT管理通道传递同步告警消息；
若OLT根据此前收到的实施例五中的同步告警消息更新了同步告警的状态表，则OLT在收到实施例六的同步告警消息后能够确定用于表示ESMC报文丢失的第二个比特位位置由0被置为1，据此，OLT确定时间ESMC报文丢失的同步告警产生。
基于同一发明构思，本申请实施例还提供了一种进行同步告警的ONU。由于该ONU解决问题的原理与本申请实施例的方法相似，因此该ONU的实施可以参见本申请方法的实施，重复之处不在赘述。
如图5所示，本申请实施例提供的一种进行同步告警的ONU包括：
同步告警消息生成模块501，配置为在同步告警的状态发生改变后，生成同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；
发送模块502，配置为向OLT发送同步告警消息，以使OLT根据同步告警消息确定状态发生改变的同步告警。
可选地，同步告警消息包括：
状态发生改变的同步告警的类型标识和同步告警的状态信息；或
状态发生改变的同步告警的类型标识和同步告警的状态信息，以及状态未发生改变的类型标识和同步告警的状态信息。
可选地，同步告警消息生成模块501具体配置为：
根据同步告警的类型，以及预设的同步告警的类型与类型标识的对应关系确定同步告警的类型对应的类型标识。
可选地，类型标识包括下列中的部分或全部：
预设的特定标识；
用于表示消息为告警消息的消息类别码；
同步告警对应的同步管理单元标识；
同步告警对应的告警编号。
可选地，发送模块502具体配置为：
根据预设的ONU与管理通道的对应关系，确定自身对应的管理通道；
通过管理通道向OLT发送同步告警消息。
基于同一发明构思，本申请实施例还提供了一种进行同步告警的OLT。由于该OLT解决问题的原理与本申请实施例的方法相似，因此该OLT的实施可以参见本申请方法的实施，重复之处不在赘述。
如图6所示，本申请提供的一种进行同步告警的OLT包括：
接收模块601，配置为接收ONU发送的同步告警消息，其中同步告警消息包括同步告警的类型标识和同步告警的状态信息；
确定模块602，配置为根据同步告警消息确定状态发生改变的同步告警。
可选地，确定模块602具体配置为：
根据以下方法确定状态发生改变的同步告警的类型：
若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识，则将同步告警消息中的同步告警的类型标识作为状态发生改变的同步告警的类型标识，根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型；或
若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识和状态未发生改变的类型标识，则OLT根据之前收到的同步告警消息确定状态发生改变的同步告警的类型。
可选地，确定模块602具体配置为：
根据预设的同步告警的类型与类型标识的对应关系，确定状态发生改变的类型标识对应的状态发生改变的同步告警的类型。
可选地，类型标识包括下列中的部分或全部：
预设的特定标识；
用于表示消息为告警消息的消息类别码；
同步告警对应的同步管理单元标识；
同步告警对应的告警编号。
可选地，确定模块602还配置为：
确定收到同步告警消息的管理通道；
根据预设的ONU与管理通道的对应关系，确定管理通道对应的ONU。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。
工业实用性
采用本申请实施例，ONU能够在同步告警的状态发生改变后，生成包括同步告警的类型标识和同步告警的状态信息的同步告警消息，通过同步告警消息ONU能够将同步告警传递至OLT，因此解决了现有技术中无法在ONU和OLT之间进行同步告警传递问题。

Claims (21)

  1. 一种进行同步告警的方法，该方法包括：
    ONU在同步告警的状态发生改变后，生成同步告警消息，其中所述同步告警消息包括同步告警的类型标识和同步告警的状态信息；
    所述ONU向OLT发送所述同步告警消息，以使所述OLT根据所述同步告警消息确定状态发生改变的同步告警。
  2. 如权利要求1所述的方法，其中，所述同步告警消息包括：
    状态发生改变的同步告警的类型标识和同步告警的状态信息；或
    状态发生改变的同步告警的类型标识和同步告警的状态信息，以及状态未发生改变的类型标识和同步告警的状态信息。
  3. 如权利要求1所述的方法，其中，所述ONU根据以下方法确定所述类型标识：
    所述ONU根据同步告警的类型，以及预设的同步告警的类型与类型标识的对应关系确定同步告警的类型对应的类型标识。
  4. 如权利要求1～3任一所述的方法，其中，所述类型标识包括下列中的部分或全部：
    预设的特定标识；
    用于表示消息为告警消息的消息类别码；
    同步告警对应的同步管理单元标识；
    同步告警对应的告警编号。
  5. 如权利要求1所述的方法，其中，所述ONU向OLT发送所述同步告警消息，包括：
    所述ONU根据预设的ONU与管理通道的对应关系，确定自身对应的管理通道；
    所述ONU通过所述管理通道向所述OLT发送所述同步告警消息。
  6. 一种进行同步告警的方法，该方法包括：
    OLT接收ONU发送的同步告警消息，其中所述同步告警消息包括同步告警的类型标识和同步告警的状态信息；
    OLT根据所述同步告警消息确定状态发生改变的同步告警。
  7. 如权利要求6所述的方法，其中，所述OLT根据所述同步告警消息确定状态发生改变的同步告警，包括：
    所述OLT根据以下方法确定状态发生改变的同步告警的类型：
    若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识，则所述OLT将所述同步告警消息中的所述同步告警的类型标识作为状态发生改变的同步告警的类型标识，根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型；或
    若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识和状态未发生改变的类型标识，则所述OLT根据之前收到的同步告警消息确定状态发生改变的同步告警的类型。
  8. 如权利要求7所述的方法，其中，所述OLT根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型，包括：
    根据预设的同步告警的类型与类型标识的对应关系，确定所述状态发生改变的同步告警的类型标识对应的状态发生改变的同步告警的类型。
  9. 如权利要求6～8任一所述的方法，其中，所述类型标识包括下列中的部分或全部：
    预设的特定标识；
    用于表示消息为告警消息的消息类别码；
    同步告警对应的同步管理单元标识；
    同步告警对应的告警编号。
  10. 如权利要求6所述的方法，其中，所述OLT接收ONU发送的同步告警消息之后，还包括：
    所述OLT确定收到所述同步告警消息的管理通道；
    所述OLT根据预设的ONU与管理通道的对应关系，确定所述管理通道对应的ONU。
  11. 一种进行同步告警的ONU，该ONU包括：
    同步告警消息生成模块，配置为在同步告警的状态发生改变后，生成同步告警消息，其中所述同步告警消息包括同步告警的类型标识和同步告警的状态信息；
    发送模块，配置为向OLT发送所述同步告警消息，以使所述OLT根据所述同步告警消息确定状态发生改变的同步告警。
  12. 如权利要求11所述的ONU，其中，所述同步告警消息包括：
    状态发生改变的同步告警的类型标识和同步告警的状态信息；或
    状态发生改变的同步告警的类型标识和同步告警的状态信息，以及状态未发生改变的类型标识和同步告警的状态信息。
  13. 如权利要求11所述的ONU，其中，所述同步告警消息生成模块具体配置为：
    根据同步告警的类型，以及预设的同步告警的类型与类型标识的对应关系确定同步告警的类型对应的类型标识。
  14. 如权利要求11～13任一所述的ONU，其中，所述类型标识包括下列中的部分或全部：
    预设的特定标识；
    用于表示消息为告警消息的消息类别码；
    同步告警对应的同步管理单元标识；
    同步告警对应的告警编号。
  15. 如权利要求11所述的ONU，其中，所述发送模块具体配置为：
    根据预设的ONU与管理通道的对应关系，确定自身对应的管理通道；
    通过所述管理通道向所述OLT发送所述同步告警消息。
  16. 一种进行同步告警的OLT，该OLT包括：
    接收模块，配置为接收ONU发送的同步告警消息，其中所述同步告警消息包括同步告警的类型标识和同步告警的状态信息；
    确定模块，配置为根据所述同步告警消息确定状态发生改变的同步告警。
  17. 如权利要求16所述的OLT，其中，所述确定模块具体配置为：
    根据以下方法确定状态发生改变的同步告警的类型：
    若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识，则将所述同步告警消息中的所述同步告警的类型标识作为状态发生改变的同步告警的类型标识，根据状态发生改变的同步告警的类型标识确定状态发生改变的同步告警的类型；或
    若同步告警消息中的类型标识为状态发生改变的同步告警的类型标识和状态未发生改变的类型标识，则所述OLT根据之前收到的同步告警消息确定状态发生改变的同步告警的类型。
  18. 如权利要求17所述的OLT，其中，所述确定模块具体配置为：
    根据预设的同步告警的类型与类型标识的对应关系，确定所述状态发生改变的类型标识对应的状态发生改变的同步告警的类型。
  19. 如权利要求16～18任一所述的OLT，其中，所述类型标识包括下列中的部分或全部：
    预设的特定标识；
    用于表示消息为告警消息的消息类别码；
    同步告警对应的同步管理单元标识；
    同步告警对应的告警编号。
  20. 如权利要求16所述的OLT，其中，所述确定模块还配置为：
    确定收到所述同步告警消息的管理通道；
    根据预设的ONU与管理通道的对应关系，确定所述管理通道对应的ONU。
  21. 一种计算机存储介质，其中存储有计算机可执行指令，该计算机可执行指令配置执行上述权利要求1-5、权利要求6-10任一项所述的进行同步告警的方法。
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CN105703893A (zh) * 2014-11-25 2016-06-22 中兴通讯股份有限公司 时钟源属性的同步方法、装置及系统
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