WO2018188343A1 - 一种链路恢复方法、装置和通信节点 - Google Patents

一种链路恢复方法、装置和通信节点 Download PDF

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Publication number
WO2018188343A1
WO2018188343A1 PCT/CN2017/112276 CN2017112276W WO2018188343A1 WO 2018188343 A1 WO2018188343 A1 WO 2018188343A1 CN 2017112276 W CN2017112276 W CN 2017112276W WO 2018188343 A1 WO2018188343 A1 WO 2018188343A1
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Prior art keywords
link
current link
mode
recovery
fast
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PCT/CN2017/112276
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English (en)
French (fr)
Inventor
杜剑
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中兴通讯股份有限公司
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Publication of WO2018188343A1 publication Critical patent/WO2018188343A1/zh

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    • 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
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2869—Operational details of access network equipments
    • 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
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0681—Configuration of triggering conditions

Definitions

  • the present application relates to, but is not limited to, the field of network communication technologies, and in particular, to a link recovery method, apparatus, and communication node.
  • the communication line is compatible with the G.FAST line and the VDSL2 line. This way, the original copper wire is retained, and there is no need to separately install the fiber in the user's home.
  • the G.FAST line is susceptible to external influences during the chain construction process, After trying to establish a chain failure in G.FAST mode, it will fall back into the VDSL2 chain-building mode to build the chain.
  • the link-building rate of the line is only the rate of VDSL2 (the theoretical maximum is the two-way rate sum of 200Mbps), which is much smaller than The rate that G.FAST can provide (theoretical maximum is the two-way rate sum of 1 Gbps) affects the user experience.
  • the operator needs to passively wait for the user to declare such a fault that the network speed is slow, and then confirm that the user's subscription type is G.FAST, and check the user's chain-building mode. If the link-building mode is VDSL2 mode, it needs to be repeated. Forcing the line to re-establish the chain until it is built into the G.FAST mode, which brings a lot of maintenance work to the operator. If the problem is not handled in time, it will also bring a poor experience to the user.
  • the embodiment of the present application provides a link recovery method, device, and communication node, so that when an operator deploys a G.FAST access device, the G.FAST line may not be able to be avoided due to external interference.
  • the link is built into the G.FAST mode and rolled back into the VDSL2 mode to ensure the user's service bandwidth.
  • An embodiment of the present application provides a link recovery method, where the method includes:
  • the G.FAST line-building mode is rolled back to: at the current When the terminal and the network element end of the link support the G.FAST mode, the current link is built in the ultra-high speed digital subscriber line (VDSL2) mode;
  • VDSL2 ultra-high speed digital subscriber line
  • the current link is chained into a G.FAST mode according to the recovery time and a preset link recovery method.
  • the method may further include:
  • the method may further include:
  • the electrical length of the current link is greater than or equal to a preset electrical length threshold, it is determined that the current link is a G.FAST line-building mode fallback.
  • the determining a recovery time of the current link may include:
  • the link recovery delay time of the current link is greater than the first preset time, the recovery time is a second preset time, and the link recovery delay time is a sum of time delaying the recovery time of the current link;
  • the recovery time is a current time
  • the bandwidth usage information of the current link in the third preset time is greater than the preset threshold, delaying the link recovery delay time of the current link by a fourth preset time, and determining to delay the fourth preset time Whether the link recovery delay time is greater than the first preset time until the recovery time of the current link is determined.
  • the chaining the current link to the G.FAST mode according to the recovery time and the preset link recovery method may include:
  • the current link recovery failure is determined. If the number of times the current link is restored is less than the preset threshold, the current link is forced to be re-run.
  • the link establishment mode of the re-established link is not in the G.FAST mode, the number of the recovery times is increased by one, and it is determined whether the number of times of the recovery is greater than or equal to the preset threshold number until the current link is determined.
  • the link is built in G.FAST mode or the current link fails to recover.
  • the method may further include: receiving a status query command, querying an operation status of the current link, and obtaining a query result, where the query result includes one or more of the following information: whether the current link is There is a G.FAST line-building mode rollback state, a historical link back-off state time of the current link, and a link-building mode recovery time of the current link; the query result is sent to the operator.
  • the method may further include:
  • the reporting notification is sent to the network management, and the reporting notification includes: a G.FAST line-building mode fallback, or a current link recovery success notification, or a current link recovery failure notification.
  • the foregoing method may further include:
  • the embodiment of the present application provides a link recovery apparatus, where the apparatus includes: a determining unit and a processing unit, where
  • the determining unit is configured to determine a recovery time of the current link if the current link is determined to be a G.FAST line-building mode fallback, where the G.FAST line-building mode is rolled back to: When the terminal and the network element end of the current link support the G.FAST mode, the current link is built in the VDSL2 mode;
  • the processing unit is configured to link the current link to a G.FAST mode according to the recovery time and a preset link recovery method.
  • the determining unit may be configured to:
  • the apparatus may further include: an acquiring unit configured to acquire a protocol capability set of the network element end of the current link and the terminal if the current link is successfully established for the initial link;
  • the protocol capability set of the network element end and the terminal determines that the network element end and the terminal support the G.FAST mode, and obtains the historical failed link establishment times of the current link; if the history fails to build the chain number is greater than or equal to the built The chain number threshold to obtain the electrical length of the current link;
  • the determining unit may be further configured to determine that the current link is a G.FAST line-building mode rollback if the electrical length of the current link is greater than or equal to a preset electrical length threshold.
  • the determining unit may be configured to:
  • the link recovery delay time of the current link is greater than the first preset time, the recovery time is a second preset time, and the link recovery delay time is a sum of time delaying the recovery time of the current link;
  • the recovery time is a current time
  • the bandwidth usage information of the current link in the third preset time is greater than the preset threshold, delaying the link recovery delay time of the current link by a fourth preset time, and determining to delay the fourth preset time Whether the link recovery delay time is greater than the first preset time until the recovery time of the current link is determined.
  • the processing unit may be configured to:
  • the current link recovery failure is determined. If the number of times the current link is restored is less than the preset threshold, the current link is forced to be re-run.
  • the link establishment mode of the re-established link is not in the G.FAST mode, the number of the recovery times is increased by one, and it is determined whether the number of times of the recovery is greater than or equal to the preset threshold number until the current link is determined.
  • the link is built in G.FAST mode or the current link fails to recover.
  • the embodiment of the present application provides a communication node, where the communication node includes: a processor, configured to determine a recovery time of the current link if the current link is determined to be a G.FAST line-building mode fallback, where The G.FAST line-building mode is rolled back to: when the terminal and the network element end of the current link support the G.FAST mode, the current link is built in the VDSL2 mode, and is also configured according to The recovery time and a preset link recovery method link the current link to a G.FAST mode.
  • a processor configured to determine a recovery time of the current link if the current link is determined to be a G.FAST line-building mode fallback, where The G.FAST line-building mode is rolled back to: when the terminal and the network element end of the current link support the G.FAST mode, the current link is built in the VDSL2 mode, and is also configured according to The recovery time and a preset link recovery method link the current link to a G.FAST mode.
  • the embodiment of the present application further provides a computer readable medium storing computer executable instructions, the steps of implementing the link recovery method when the computer executable instructions are executed by a processor.
  • the embodiment provides a link recovery method, device, and communication node. If it is determined that the current link is a fast access digital terminal G.FAST line-building mode rollback, determining the recovery time of the current link, the The G.FAST line-building mode is rolled back to: when the terminal and the network element end of the current link support the G.FAST mode, the current link is built in the VDSL2 mode; according to the recovery time And the preset link recovery method links the current link into a G.FAST mode.
  • the link recovery method, device and communication node provided by the implementation can detect the G.FAST line construction mode rollback, automatically restore the link establishment mode and the link establishment rate, without operator intervention, and reduce the operator's work. The quantity can improve the stability of the G.FAST system and make full use of the line bandwidth to ensure G.FAST high-speed access.
  • FIG. 1 is a schematic flowchart 1 of a link recovery method according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a process for determining a G.FAST line construction mode rollback process according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a process for determining a recovery time according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of a link recovery process according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram 1 of a link recovery apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram 2 of a link recovery apparatus according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram 1 of a communication node according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram 2 of a communication node according to an embodiment of the present application.
  • the embodiment of the present application provides a link recovery method, as described in FIG. 1 , the method may include:
  • Step 101 Determine the recovery time of the current link if it is determined that the current link is a G.FAST line-building mode fallback.
  • the G.FAST line construction chain mode is rolled back to: the terminal and the network in the current link
  • the current link is built in the ultra-high-speed digital subscriber line (VDSL2) mode.
  • VDSL2 ultra-high-speed digital subscriber line
  • the link that has the G.FAST line-building mode fallback phenomenon is automatically performed. Restore the link establishment mode and link establishment rate of the link to reduce operator maintenance.
  • Step 102 Chain the current link into a G.FAST mode according to the recovery time and a preset link recovery method.
  • the executor of the link recovery method provided in this embodiment may be a link recovery device, and the link recovery device may include: a link establishment mode backoff determination module, a recovery time selection module, a recovery execution module, a status query module, and a notification report. Module, main control module.
  • the main control module is configured to determine the link that belongs to the G.FAST line-building mode rollback according to the judgment of the link-building mode fallback determination module, and adopt the recovery time given by the recovery time selection module.
  • the method of restoring the execution module is restored, and the query command is sent to the status query module and the query result is received, and the notification notification module sends a notification report to the network management.
  • the chain-building mode fallback determination module is configured to compare and analyze the protocol capability set of the network element end and the terminal of the G.FAST line that has been built into the VDSL2 mode, and determine the electrical length of the link, and compare the historical link failure. Whether the number of times exceeds the threshold, so that it can be determined whether the link belongs to the G.FAST line establishment state back-off.
  • G.FAST line-building mode rollback means that the network element end and the terminal of the link support the G.FAST mode. However, in the link establishment process, the link does not end up with G.FAST due to external interference. The model builds the chain and eventually builds the chain in VDSL2 mode.
  • the recovery of the G.FAST line building chain mode means that the network element end and the terminal of the link support the G.FAST mode, and the final chain building mode is restored from the VDSL2 mode to the G.FAST mode.
  • the protocol capability set of the link refers to the Capabilities List defined in the G.994.1 standard, that is, the set of chain-building modes supported by the device.
  • G.FAST link including but not limited to the G.9701 mode. (commonly known as G.FAST mode), G.993.2, G993.5 mode (commonly known as VDSL2 mode) and other modes.
  • G.FAST mode commonly known as G.FAST mode
  • G.993.2 commonly known as G993.5 mode
  • VDSL2 mode commonly known as VDSL2 mode
  • the device chooses to build the chain mode, it will follow a certain order, starting from the protocol with higher priority and failing to build the chain. Roll back to select a mode with a lower priority.
  • G.FAST The mode priority is higher than the VDSL2 mode.
  • the electrical length is a physical quantity that characterizes a link attenuation. It is linear with the length of the link. The unit is dB.
  • the cable with the thicker wire diameter has a relatively smaller electrical length.
  • an AWG26 cable of approximately 100 meters in length has an electrical length of approximately 2.47 db and an AWG 24 cable of approximately 100 meters in length with an electrical length of approximately 1.9 db.
  • the number of historical failures to build a chain including the number of times the network element end of the link and the terminal attempted to establish a link in the G.FAST mode but failed to build the link.
  • the recovery time selection module is configured to determine the link recovery time by analyzing the historical bandwidth usage information of the link where the device used by the current user is located.
  • the historical bandwidth usage information refers to the usage of the line bandwidth by the user in an exemplary period of time in the past period of time, reflecting the activity level of the user, providing a basis for the selection of the recovery time, and also The use of line bandwidth in minutes or other time periods.
  • Restore the execution module configured to re-chain the link by forcing the link until the line is built into G.FAST mode.
  • the status query module is configured to provide the current link with the G.FAST line-building mode rollback phenomenon. Check the number of times the line history mode is rolled back, the time when the rollback occurs, and the time for the rollback recovery. This helps operators understand the current status. The link establishment mode of the line is rolled back and restored.
  • the notification reporting module is configured to report the G.FAST line-building mode recovery when the link occurs, and the corresponding notification is reported.
  • the method provided in this embodiment obtains the access protocol capability set supported by the network element side and the terminal side of the G.FAST link established in the VDSL2 mode, determines the electrical length of the link, and judges the history of the line failure.
  • the number of links determines whether there is a G.FAST line-building mode rollback phenomenon on the link, and determines the line where the G.FAST line-building mode is back-off. According to the bandwidth usage of the user's history, select the appropriate one. Recovery time, restore the line construction mode and link establishment rate by repeatedly forcing the line to re-chain.
  • determining whether the current link is a G.FAST line-building mode fallback may include:
  • the foregoing method may further include:
  • the number of times the history of the current link fails to be established is determined, and it is determined whether the number of times the historical failed link establishment is greater than or equal to a preset number of times of establishing the chain;
  • the electrical length of the current link is greater than or equal to a preset electrical length threshold, it is determined that the current link is a G.FAST line-building mode fallback.
  • the method may further include:
  • the network element does not support the G.FAST protocol or the terminal does not support the G.FAST protocol, it is determined that the current link is not backed up by the G.FAST line-building mode.
  • step 201 determining whether the current link is successfully established for the initial link
  • Step 202 If the initial link is not successfully established, obtain all the link establishment mode records of the current link history;
  • All the link establishment mode records of the history of the link refer to the link establishment mode of each link established by the link after the system is started.
  • Step 203 Determine whether there is a G.FAST mode in the history of all link establishment mode records.
  • Step 204 If there is a built-in G.FAST mode, it is determined that the current link can be restored;
  • Step 205 If there is no G.FAST mode, the current link cannot be recovered.
  • Step 206 If the initial link is successfully established, obtain a protocol capability set of the link network element end and the terminal;
  • Step 207 Compare the obtained network element end with the protocol capability set of the terminal, and determine whether the network element end and the terminal both support the G.FAST mode.
  • Step 208 If it is determined that the terminal type that does not support the G.FAST mode is adopted, it is determined that the link establishment mode cannot be automatically restored;
  • the operator may preferentially deploy the central office and then gradually update the user terminal. At this time, there may be cases where the central office supports the G.FAST link-building mode, but the user terminal does not support it.
  • Step 209 If it is determined that both the network element end and the terminal support the G.FAST mode, the history of the current link fails to be established.
  • Step 210 Determine whether the number of failed link establishments is greater than or equal to the threshold n;
  • Step 211 If it is less than the threshold n, it is determined that the chain-building mode cannot be automatically restored;
  • Step 212 If greater than or equal to the threshold n, obtain an electrical length of the current link.
  • Step 213 determining whether the electrical length is less than a threshold m
  • Step 214 If the electrical length is greater than or equal to the threshold m, it is determined that the chain-building mode cannot be restored;
  • Step 215 If the electrical length is less than the threshold m, it is determined that the chain-building mode can be resumed.
  • the G.FAST access technology has a certain applicable distance. After this distance, even if both ends support the G.FAST chain-building mode, it cannot be chained into G.FAST mode. For example, the applicable distance supported by VDSL2 access technology is longer than G.FAST. At this time, the line may only be built into VDSL2 mode.
  • the electrical length parameter is a measure of the length of the line, and its value is linear with the length of the line.
  • the threshold m of the electrical length may be the electrical length corresponding to the maximum application distance of G.FAST, and the application distance of the general G.FAST shall not exceed 600 meters.
  • the determining the recovery time of the current link may include:
  • the link recovery delay time of the current link is greater than the first preset time, the recovery time is a second preset time, and the link recovery delay time is a sum of time delaying the recovery time of the current link;
  • the recovery time is a current time
  • the bandwidth usage information of the current link in the third preset time is greater than the preset threshold, delaying the link recovery delay time of the current link by a fourth preset time, and determining to delay the fourth preset time If the link recovery delay time is greater than the first preset time, if the link recovery delay time after the fourth preset time is delayed is greater than the first preset time, the recovery time is the second preset time, if the postponed The link recovery delay time after the preset time is less than or equal to the first preset time, and obtains the bandwidth usage information of the current link in the third preset time, and determines that the current link is in the third preset according to the foregoing rule. The bandwidth usage information in the time, and the recovery time of the current link is determined according to the judgment result.
  • the first preset time may be 24 hours
  • the second preset time may be 3 am
  • the third preset time is historical m seconds
  • the fourth preset time may be half an hour; Figure 3 shows.
  • Step 301 Determine whether the current total delay time exceeds 24 hours
  • Step 302 If it is more than 24 hours, select a valid recovery time at 3 am on the same day;
  • Step 303 If there is no more than 24 hours, the current link history is obtained for m seconds. Wide use information;
  • the bandwidth usage information may be a bandwidth value, or simply a bandwidth.
  • Step 304 Determine whether the bandwidth is greater than a threshold value n;
  • Step 305 if greater than the threshold n, then delay for half an hour, and then repeat steps 301 to 304;
  • Step 306 If the threshold is less than or equal to the threshold, the current time is taken as a valid recovery time.
  • m seconds is an empirical data, exemplarily, it can be about 10 seconds, the user uses less bandwidth in the first m seconds, and the probability of using less bandwidth in the next time is relatively large, and the bandwidth threshold is relatively large.
  • n is also an empirical value, the example value can be less than 100kbps for both uplink and downlink.
  • the chaining the current link to the G.FAST mode according to the recovery time and the preset link recovery method may include:
  • the current link is restored. If the number of times the current link is restored is less than the preset threshold, the current link is forced to re-establish the link. Determining whether the link establishment mode of the re-established link is in the G.FAST mode;
  • the link establishment mode of the re-established link is not in the G.FAST mode, the number of the recovery times is increased by one, and it is determined whether the number of times of the recovery is greater than or equal to the preset threshold number until the current link is determined.
  • the link is built in G.FAST mode or the current link fails to recover.
  • Step 401 Determine whether the current link recovery retry times exceed a threshold value k;
  • Step 402 If the threshold value k is exceeded, the recovery fails.
  • Step 403 If the threshold value k is not exceeded, the link is forced to be re-established;
  • Step 404 Determine whether the current link establishment mode is a G.FAST mode.
  • Step 405 If the current link establishment mode is G.FAST mode, the recovery is successful.
  • Step 406 The current link establishment mode is not in the G.FAST mode, and the number of retries is increased by one. The process from step 401 to step 404 until the link is established in G.FAST mode or the link recovery fails.
  • the method may further include: receiving a status query command, querying whether the current link has a query result of the G.FAST line-building mode rollback, and sending the query result to the operator.
  • the operator sends a status query command
  • the link recovery device receives the status query command to query the current running status of each line of the network element, which may be used to collect all relevant information on the current network element, including whether the current line is in the line fallback.
  • the status of the line, the time of the historical rollback state of the line, and the time of the recovery of the link-building mode, the query result is returned to the operator, thereby providing an interface for the operator to understand the current GFAST link-building mode fallback of each line.
  • the method may further include: sending a report notification to the network management, where the report notification includes: a G.FAST line link mode fallback, or a current link recovery success notification, or a current link recovery of the current link Failure notification.
  • the link recovery device may report the success or failure of the link recovery of the G.FAST network element to the network management.
  • the link recovery method in this embodiment determines whether the line belongs to the G.FAST line-building mode, and selects an appropriate time to automatically resume the line-building mode, thereby eliminating operator intervention. Reducing the workload of operators can improve the stability of G.FAST system and make full use of line bandwidth to ensure G.FAST high-speed access.
  • the embodiment of the present application further provides a link recovery device 50.
  • the device includes: a determining unit 501, and a processing unit 502, where
  • the determining unit 501 is configured to determine a recovery time of the current link if the current link is determined to be a G.FAST line-building mode fallback, where the G.FAST line-building mode is rolled back to: When the terminal and the network element end of the current link support the G.FAST mode, the current link is built in the VDSL2 mode;
  • the processing unit 502 is configured to link the current link to a G.FAST mode according to the recovery time and a preset link recovery method.
  • the determining unit 501 can be configured to:
  • the link recovery apparatus 50 may further include: an obtaining unit 503, configured to acquire the network element end of the current link and the terminal if the current link is successfully established for the initial link. a set of protocol capabilities; if it is determined that the network element end and the terminal support the G.FAST mode according to the protocol capability set of the network element end and the terminal, the number of times the history of the current link fails to be established; if the history fails The number of times the link is established is greater than or equal to the threshold of the number of links established, and the electrical length of the current link is obtained;
  • the determining unit 501 is further configured to determine that the current link is a G.FAST line-building mode rollback if the electrical length of the current link is greater than or equal to a preset electrical length threshold.
  • the determining unit 501 can be configured to:
  • the link recovery delay time of the current link is greater than the first preset time, the recovery time is a second preset time, and the link recovery delay time is a sum of time delaying the recovery time of the current link;
  • the recovery time is a current time
  • the bandwidth usage information of the current link in the third preset time is greater than the preset threshold, delaying the link recovery delay time of the current link by a fourth preset time, and determining to delay the fourth preset time Whether the link recovery delay time is greater than the first preset time until the recovery time of the current link is determined.
  • processing unit 502 can be configured to:
  • the current link recovery failure is determined. If the number of times the current link is restored is less than the preset threshold, the current link is forced to be re-run.
  • the link establishment mode of the re-established link is not in the G.FAST mode, the number of the recovery times is increased by one, and it is determined whether the number of times of the recovery is greater than or equal to the preset threshold number until the current link is determined.
  • the link is built in G.FAST mode or the current link fails to recover.
  • the link recovery device 50 may further include: a receiving unit 504, a query unit 505, and a sending unit 506.
  • the receiving unit 504 is configured to receive a status query command
  • the querying unit 505 is configured to query the running status of the current link, and obtain a query result, where the query result includes one or more of the following information: whether the current link exists in the G.FAST line building chain mode. The status of the retreat, the historical rollback status time of the current link, and the recovery time of the link establishment mode of the current link;
  • the sending unit 506 is configured to send the query result to the operator.
  • the link recovery apparatus 50 may further include: a sending unit 506, configured to send a reporting notification to the network management, where the reporting notification includes: a G.FAST line establishing mode exists on the current link Fallback, or current link recovery success notification, or current link recovery failure notification.
  • a sending unit 506 configured to send a reporting notification to the network management, where the reporting notification includes: a G.FAST line establishing mode exists on the current link Fallback, or current link recovery success notification, or current link recovery failure notification.
  • the determining unit 501 is further configured to: if it is determined that the network element does not support the G.FAST protocol according to the network element end and the protocol capability set of the terminal, or the terminal does not support the G.FAST protocol, Then it is determined that the current link is not backed up by the G.FAST line-building mode.
  • the link recovery apparatus determines whether the line belongs to the G.FAST line-building mode, and selects an appropriate time to automatically resume the line-building mode, thereby reducing operator's work without operator intervention.
  • the quantity can improve the stability of the G.FAST system and make full use of the line bandwidth to ensure G.FAST high-speed access.
  • the embodiment of the present application further provides a communication node 60.
  • the communication node 60 includes: a processor 601 configured to determine, if it is determined that the current link is a G.FAST line-building mode fallback, determine the The recovery time of the current link, wherein the G.FAST line construction mode is rolled back to: when the terminal and the network element end of the current link both support the G.FAST mode, the current link is in the VDSL2 mode.
  • the processor 601 can be configured to:
  • the processor 601 may be configured to acquire a protocol capability set of the network element end of the current link and the terminal if the current link is successfully established for the initial link; and if according to the protocol of the network element end and the terminal The capability set determines that the network element end and the terminal support the G.FAST mode, and obtains the historical failed link establishment number of the current link; if the historical failed link establishment time is greater than or equal to the link establishment time threshold, the current link is obtained.
  • the electrical length of the current link is determined to be a G.FAST line-building mode fallback if the electrical length of the current link is greater than or equal to a preset electrical length threshold.
  • the processor 601 can be configured to:
  • the link recovery delay time of the current link is greater than the first preset time, the recovery time is a second preset time, and the link recovery delay time is a sum of time delaying the recovery time of the current link;
  • the recovery time is the current time
  • the bandwidth usage information of the current link in the third preset time is greater than the preset threshold, delaying the link recovery delay time of the current link by a fourth preset time, and determining to delay the fourth preset time Whether the link recovery delay time is greater than the first preset time until the recovery time of the current link is determined.
  • the processor 601 can be configured to:
  • the current link recovery failure is determined. If the number of times the current link is restored is less than the preset threshold, the current link is forced to be re-run.
  • the link establishment mode of the re-established link is not in the G.FAST mode, the number of the recovery times is increased by one, and it is determined whether the number of times of the recovery is greater than or equal to the preset threshold number until the current link is determined.
  • the link is built in G.FAST mode or the current link fails to recover.
  • the communication node 60 may further include: a receiver 602, a transmitter 603,
  • the receiver 602 is configured to receive a status query command.
  • the processor 601 is configured to query the running status of the current link to obtain a query result, where the query result includes one or more of the following information: whether the current link exists in the G.FAST line building chain mode. The status of the retreat, the historical rollback status time of the current link, and the recovery time of the link establishment mode of the current link;
  • the transmitter 603 is configured to send the query result to the operator.
  • the communication node 60 may further include: a sender 603, configured to send a report notification to the network management, where the report notification includes: a G.FAST line building chain mode exists on the current link Fallback, or current link recovery success notification, or current link recovery failure notification.
  • a sender 603 configured to send a report notification to the network management, where the report notification includes: a G.FAST line building chain mode exists on the current link Fallback, or current link recovery success notification, or current link recovery failure notification.
  • the processor 601 may be further configured to determine, according to the network element end and the protocol capability set of the terminal, that the network element end does not support the G.FAST protocol or the terminal does not support the G.FAST protocol, Then it is determined that the current link is not backed up by the G.FAST line-building mode.
  • the communication node provided in this embodiment determines whether the line belongs to the G.FAST line-building mode, and selects an appropriate time to automatically resume the line-building mode, thereby eliminating operator intervention and reducing the workload of the operator. It can improve the stability of G.FAST system and make full use of line bandwidth to ensure G.FAST high-speed access.
  • the embodiment of the present application further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to check whether the current link has a G.FAST line connection mode rollback phenomenon. View the number of times the link's history mode is rolled back, the time when the rollback occurred, and the time that the rollback was resumed.
  • the embodiment of the present application further provides an active reporting mechanism, which can report the phenomenon that the link establishment mode is restored in the link.
  • embodiments of the present application can be provided as a method, system, or computer program product. Accordingly, the application can take the form of a hardware embodiment, a software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device. Having a series of operational steps performed on a computer or other programmable device to produce computer-implemented processing such that instructions executed on a computer or other programmable device are provided for implementing one or more processes and/or block diagrams in the flowchart. The steps of a function specified in a box or multiple boxes.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or may Any other medium used to store the desired information and that can be accessed by the computer.
  • communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .
  • the embodiment of the present invention provides a link recovery method, a device, and a communication node, which can detect a G.FAST line link-building mode rollback, automatically restore a link establishment mode and a link-building rate, and reduce operator operations without operator intervention.
  • the workload of the business can improve the stability of the G.FAST system and make full use of the line bandwidth to ensure G.FAST high-speed access.

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Abstract

一种链路恢复方法，包括：若确定当前链路为快速接入数字终端G.FAST线路建链模式回退，确定所述当前链路的恢复时间，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以超高速数字用户线路VDSL2模式进行建链的情况；根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。

Description

一种链路恢复方法、装置和通信节点 技术领域
本申请涉及但不限于网络通信技术领域，尤其涉及一种链路恢复方法、装置和通信节点。
背景技术
随着科技的快速发展，数据业务使用量日益增长，传统的非对称数字用户线路(ADSL，Asymmetric Digital Subscriber Line)、超高速数字用户线路(VDSL2，Very High Speed Digital Subscriber Line)已经不能满足用户对带宽的需求，因此，FAST(Fast Access to Subscriber Terminals，快速接入数字终端)接入技术(通常俗称G.FAST)应运而生。
目前通信线路兼容G.FAST线路和VDSL2线路，这种方式保留了原先铜线接入，不需要在用户家中另外部署光纤，但是，由于G.FAST线路在建链过程中容易受到外界影响，在尝试以G.FAST模式建链失败后，就会回退成VDSL2的建链模式进行建链，此时线路的建链速率只有VDSL2的速率(理论最大值为双向速率总和200Mbps)，远远小于G.FAST能提供的速率(理论最大值为双向速率总和1Gbps)，影响了用户体验。为了解决这个问题，运营商需要被动等待用户申报网速慢这类故障，然后再确认用户的签约类型为G.FAST，以及检查用户的建链模式，如果建链模式为VDSL2模式，则需要反复强制线路重新建链直到建链成G.FAST模式，这样给运营商带来很多维护的工作量，如果问题没有被及时处理，也给用户带来较差的体验。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本申请实施例提供一种链路恢复方法、装置和通信节点，使得当运营商部署G.FAST接入设备时，避免由于外界的干扰，G.FAST线路可能会无法 建链成G.FAST模式而回退成VDSL2模式，从而确保用户的服务带宽。
本申请实施例提供一种链路恢复方法，所述方法包括：
若确定当前链路为快速接入数字终端(G.FAST)线路建链模式回退，确定所述当前链路的恢复时间，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以超高速数字用户线路(VDSL2)模式进行建链的情况；
根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
在示例性实施方式中，在所述若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间之前，上述方法还可以包括：
若当前链路不为初次链路建立成功，获取所述当前链路的历史链路建立模式记录；若所述历史链路建立模式记录中存在链路建立为G.FAST模式的记录，则确定所述当前链路为G.FAST线路建链模式回退。
在示例性实施方式中，在所述若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间之前，上述方法还可以包括：
若所述当前链路为初次链路建立成功，获取当前链路的网元端和终端的协议能力集；
若根据所述网元端和终端的协议能力集确定所述网元端和终端均支持G.FAST模式，获取所述当前链路的历史失败建链次数；
若所述历史失败建链次数大于或等于建链次数阈值，获取当前链路的电气长度；
若所述当前链路的电气长度大于或等于预设电气长度阈值，则确定当前链路为G.FAST线路建链模式回退。
在示例性实施方式中，所述确定所述当前链路的恢复时间，可以包括：
若当前链路的链路恢复推迟时间大于第一预设时间，所述恢复时间为第二预设时间，所述链路恢复推迟时间为将当前链路的恢复时间推迟的时间总和；
若所述当前链路的链路恢复推迟时间小于或等于所述第一预设时间，获取所述当前链路在第三预设时间内的带宽使用信息；
若所述当前链路在第三预设时间内的带宽使用信息小于或等于预设门限值，所述恢复时间为当前时间；
若所述当前链路在第三预设时间内的带宽使用信息大于预设门限值，将当前链路的链路恢复推迟时间推迟第四预设时间，判断推迟第四预设时间后的链路恢复推迟时间是否大于所述第一预设时间，直到确定所述当前链路的恢复时间。
在示例性实施方式中，所述根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式，可以包括：
若在所述恢复时间确定当前链路的恢复次数大于或等于预设门限次数，则确定当前链路恢复失败，若所述当前链路的恢复次数小于预设门限次数，强制当前链路重新进行链路建立；
若重新建立后的链路的建链模式为G.FAST模式，则确定当前链路恢复成功；
若重新建立后的链路的建链模式不为G.FAST模式，将所述恢复次数加一，确定恢复次数加一后的次数是否大于或等于预设门限次数，直到确定所述当前链路建链为G.FAST模式或当前链路恢复失败。
在示例性实施方式中，所述方法还可以包括：接收状态查询命令，查询当前链路的运行状态，获得查询结果，所述查询结果包括以下信息中的一种或多种：当前链路是否存在G.FAST线路建链模式回退的状态、当前链路的历史回退状态时间和当前链路的建链模式恢复时间；发送查询结果给运营商。
在示例性实施方式中，所述方法还可以包括：
发送上报通知给网管，所述上报通知包括：当前链路存在G.FAST线路建链模式回退、或当前链路恢复成功通知、或当前链路恢复失败通知。
在示例性实施方式中，在所述获取当前链路的网元端和终端的协议能力集之后，上述方法还可以包括：
若根据所述网元端和终端的协议能力集确定所述网元端不支持G.FAST 协议或所述终端不支持G.FAST协议，则确定当前链路不为G.FAST线路建链模式回退。
本申请实施例提供一种链路恢复装置，所述装置包括：确定单元、处理单元，其中，
所述确定单元，配置为若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间，其中，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以VDSL2模式进行建链的情况；
所述处理单元，配置为根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
在示例性实施方式中，所述确定单元，可以配置为：
若当前链路不为初次链路建立成功，获取所述当前链路的历史链路建立模式记录；
若所述历史链路建立模式记录中存在链路建立为G.FAST模式的记录，则确定所述当前链路为G.FAST线路建链模式回退。
在示例性实施方式中，所述装置还可以包括：获取单元，配置为若所述当前链路为初次链路建立成功，获取当前链路的网元端和终端的协议能力集；若根据所述网元端和终端的协议能力集确定所述网元端和终端均支持G.FAST模式，获取所述当前链路的历史失败建链次数；若所述历史失败建链次数大于或等于建链次数阈值，获取当前链路的电气长度；
所述确定单元，还可以配置为若所述当前链路的电气长度大于或等于预设电气长度阈值，则确定当前链路为G.FAST线路建链模式回退。
在示例性实施方式中，所述确定单元，可以配置为：
若当前链路的链路恢复推迟时间大于第一预设时间，所述恢复时间为第二预设时间，所述链路恢复推迟时间为将当前链路的恢复时间推迟的时间总和；
若所述当前链路的链路恢复推迟时间小于或等于所述第一预设时间，获取所述当前链路在第三预设时间内的带宽使用信息；
若所述当前链路在第三预设时间内的带宽使用信息小于或等于预设门限值，所述恢复时间为当前时间；
若所述当前链路在第三预设时间内的带宽使用信息大于预设门限值，将当前链路的链路恢复推迟时间推迟第四预设时间，判断推迟第四预设时间后的链路恢复推迟时间是否大于所述第一预设时间，直到确定所述当前链路的恢复时间。
在示例性实施方式中，所述处理单元，可以配置为：
若在所述恢复时间确定当前链路的恢复次数大于或等于预设门限次数，则确定当前链路恢复失败，若所述当前链路的恢复次数小于预设门限次数，强制当前链路重新进行链路建立；
若重新建立后的链路的建链模式为G.FAST模式，则确定当前链路恢复成功；
若重新建立后的链路的建链模式不为G.FAST模式，将所述恢复次数加一，确定恢复次数加一后的次数是否大于或等于预设门限次数，直到确定所述当前链路建链为G.FAST模式或当前链路恢复失败。
本申请实施例提供一种通信节点，所述通信节点包括：处理器，配置为若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间，其中，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以VDSL2模式进行建链的情况，还配置为根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
此外，本申请实施例还提供一种计算机可读介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现上述链路恢复方法的步骤。
本实施例提供了一种链路恢复方法、装置和通信节点，若确定当前链路为快速接入数字终端G.FAST线路建链模式回退，确定所述当前链路的恢复时间，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以VDSL2模式进行建链的情况；根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。 本实施提供的链路恢复方法、装置和通信节点，可以检测G.FAST线路建链模式回退，自动地恢复链路的建链模式和建链速率，无需运营商干预，减少运营商的工作量，可以提高G.FAST系统稳定性，充分利用线路带宽保证G.FAST高速接入。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
在附图(其不一定是按比例绘制的)中，相似的附图标记可在不同的视图中描述相似的部件。具有不同字母后缀的相似附图标记可表示相似部件的不同示例。附图以示例而非限制的方式大体示出了本文中所讨论的各个实施例。
图1为本申请实施例提供的链路恢复方法的流程示意图一；
图2为本申请实施例提供的确定G.FAST线路建链模式回退流程示例图；
图3为本申请实施例提供的确定恢复时间流程示例图；
图4为本申请实施例提供的链路恢复流程示例图；
图5为本申请实施例提供的链路恢复装置的结构示意图一；
图6为本申请实施例提供的链路恢复装置的结构示意图二；
图7为本申请实施例提供的通信节点的结构示意图一；
图8为本申请实施例提供的通信节点的结构示意图二。
详述
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
本申请实施例提供一种链路恢复方法，如图1所述，该方法可以包括：
步骤101、若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间。
其中，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网 元端均支持G.FAST模式时，所述当前链路以超高速数字用户线路(VDSL2)模式进行建链的情况。
本实施例中，通过分析当前G.FAST设备上的每个链路是否存在G.FAST线路建链模式回退的现象，对存在G.FAST线路建链模式回退现象的链路，进行自动恢复链路的建链模式和建链速率，来减少运营商维护工作。
步骤102、根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
本实施例提供的链路恢复方法的执行主体可以为链路恢复装置，该链路恢复装置可以包括：建链模式回退判定模块、恢复时间选择模块、恢复执行模块、状态查询模块、通知上报模块、主控制模块。
其中，主控制模块，配置为根据建链模式回退判定模块的判断，对判定属于G.FAST线路建链模式回退的链路，按照恢复时间选择模块给出的恢复时间，对链路采用恢复执行模块的方法进行恢复，同时还可以向状态查询模块发出查询命令和接收查询结果，控制通知上报模块向网管发出通知上报。
建链模式回退判定模块，配置为通过对已经建链成VDSL2模式的G.FAST线路的网元端和终端的协议能力集进行对比分析，并判断链路的电气长度，比较历史建链失败次数是否超越阈值，从而可以判定链路是否属于G.FAST线路建链状态回退。
G.FAST线路建链模式回退，是指链路的网元端和终端都支持G.FAST模式，但是在链路建立过程中，由于存在外界的干扰，使得链路最终没有以G.FAST模式进行建链，而最终以VDSL2模式进行建链的现象。
G.FAST线路建链模式恢复，是指链路的网元端和终端都支持G.FAST模式，且最终的建链模式从VDSL2模式恢复成了G.FAST模式的现象。
链路的协议能力集，是指G.994.1标准中定义的能力集(Capabilities List)，即设备支持的建链模式的集合，对于G.FAST链路来说，包含但不限于G.9701模式(俗称G.FAST模式)、G.993.2、G993.5模式(俗称VDSL2模式)等模式，设备选择建链模式的时候会遵从一定的顺序，从优先级高的协议开始，无法建链成功则回退选择优先级低的模式。对于G.FAST线路来说，G.FAST 模式优先级要高于VDSL2模式。
电气长度，是表征一个链路衰减的物理量，和链路的长短成线性关系，单位是dB，对于同等距离的不同线径的线缆，线径越粗的线缆其电气长度相对较小。例如，长度约为100米的AWG26的线缆，其电气长度约为2.47db，长度约为100米的AWG24的线缆，其电气长度约为1.9db。
历史失败建链次数，包含链路的网元端和终端尝试以G.FAST模式进行建链但是却无法建链成功的次数。
恢复时间选择模块，配置为通过分析当前用户使用的设备所在链路的历史带宽使用信息，确定链路的恢复时间。
其中，历史带宽使用信息，是指用户在过去的一段时间内，示例性地，以秒为周期的线路带宽的使用情况，反映了用户的活跃程度，为恢复时间的选择提供了依据，还可以以分钟或其它时间为周期的线路带宽的使用情况。
恢复执行模块，配置为通过强制链路重新建链的方式，直至线路建链成G.FAST模式。
状态查询模块，配置为提供当前链路是否存在G.FAST线路建链模式回退的现象，查看线路历史模式回退的次数，回退发生的时间以及回退恢复的时间，方便运营商了解当前线路的建链模式回退和恢复状况。
通知上报模块，配置为当链路发生G.FAST线路建链模式恢复的现象，会上报相应的通知。
本实施例提供的方法，获取以VDSL2模式建链的G.FAST链路的网元侧和终端侧的支持的接入协议能力集，并判断链路的电气长度，以及判断线路的历史失败建链次数，来判定该链路是否存在G.FAST线路建链模式回退的现象，将判定存在G.FAST线路建链模式回退现象的线路，根据用户的历史的带宽使用情况，选择合适的恢复时间，通过反复强制线路重新建链的方式来恢复线路的建链模式和建链速率。
一种可能的实现方式中，确定当前链路是否为G.FAST线路建链模式回退，可以包括：
确定当前链路是否为初次链路建立成功；
若当前链路不为初次链路建立成功，获取所述当前链路的历史链路建立模式记录，确定所述历史链路建立模式记录中是否存在链路建立为G.FAST模式的记录；
若所述历史链路建立模式记录中存在链路建立为G.FAST模式的记录，则确定所述当前链路为G.FAST线路建链模式回退。
在确定当前链路是否为初次链路建立成功之后，上述方法还可以包括：
若所述当前链路为初次链路建立成功，获取当前链路的网元端和终端的协议能力集，根据所述网元端和终端的协议能力集确定所述网元端和终端是否均支持G.FAST模式；
若所述网元端和终端均支持G.FAST模式，获取所述当前链路的历史失败建链次数，确定所述历史失败建链次数是否大于或等于预设建链次数阈值；
若所述历史失败建链次数大于或等于建链次数阈值，获取当前链路的电气长度，确定所述当前链路的电气长度是否大于或等于电气长度阈值；
若所述当前链路的电气长度大于或等于预设电气长度阈值，则确定当前链路为G.FAST线路建链模式回退。
在所述根据所述网元端和终端的协议能力集确定所述网元端和终端是否均支持G.FAST模式之后，上述方法还可以包括：
若所述网元端不支持G.FAST协议或所述终端不支持G.FAST协议，则确定当前链路不为G.FAST线路建链模式回退。
示例性的，如图2所示的流程，步骤201、判断当前链路是否为初次链路建立成功；
步骤202、如果不是初次链路建立成功，则获取当前链路的历史所有的链路建立模式记录；
其中，链路的历史所有的链路建立模式记录，是指系统启动之后，该链路所记录的每一次链路建立的建链模式。
步骤203、判断历史所有的链路建立模式记录中是否存在曾建链成G.FAST模式；
步骤204、如果存在曾建链成G.FAST模式，则判定当前链路可以恢复；
步骤205、如果不存在曾建链成G.FAST模式，则判定当前链路不可以恢复；
步骤206、如果是初次链路建立成功，获取该链路网元端和终端的协议能力集；
步骤207、将获取到的网元端和终端的协议能力集进行比较，确定网元端和终端是否都支持G.FAST模式；
步骤208、如果确定采用不支持G.FAST模式的终端类型，则判定不能自动恢复建链模式；
在G.FAST部署的初期，运营商可能优先部署局端，再逐步更新用户终端，此时是可能存在局端支持G.FAST建链模式，但是用户终端不支持的情况。
步骤209、如果确定网元端和终端都支持G.FAST模式，获取当前链路的历史失败建链次数；
步骤210、判断历史失败建链次数是否大于或等于阈值n；
步骤211、如果小于阈值n，则判定不能自动恢复建链模式；
其中，大于阈值说明进行过G.FAST模式建链尝试，却没有成功，说明当时可能存在着干扰，这种情况在干扰因素消除之后，是可能重新恢复G.FAST建链模式的；阈值n是G.FAST线路尝试以G.FAST模式建链的重试次数，按照经验值可以取n＝3，没有超过阈值则认为是其他未知原因导致线路状态回退的，判定不能自动恢复建链模式。
步骤212、如果大于或等于阈值n，获取当前链路的电气长度；
步骤213、判断电气长度是否小于阈值m；
步骤214、若电气长度大于或等于阈值m，则判定不能恢复建链模式；
步骤215、若电气长度小于阈值m，则判定可以恢复建链模式。
需要说明的是，G.FAST接入技术有其一定的适用距离，超过这个距离之后，即使两端都支持G.FAST建链模式，但最终也无法建链成G.FAST模 式，VDSL2接入技术支持的适用距离比G.FAST更长，此时线路可能只会建链成VDSL2模式。而电气长度这个参数是线路长度的一个度量，其数值和线路长度成现线性关系。
其中，电气长度的阈值m可以是G.FAST最大应用距离对应的电气长度，一般的G.FAST的应用距离不会超过600米。这里，m可以取6*1.9＝11.4db，其中，1.9为100米AWG24线缆的电气长度。
一种可能的实现方式中，所述确定所述当前链路的恢复时间，可以包括：
若当前链路的链路恢复推迟时间大于第一预设时间，所述恢复时间为第二预设时间，所述链路恢复推迟时间为将当前链路的恢复时间推迟的时间总和；
若所述当前链路的链路恢复推迟时间小于或等于所述第一预设时间，获取所述当前链路在第三预设时间内的带宽使用信息；
若所述当前链路在第三预设时间内的带宽使用信息小于或等于预设门限值，所述恢复时间为当前时间；
若所述当前链路在第三预设时间内的带宽使用信息大于预设门限值，将当前链路的链路恢复推迟时间推迟第四预设时间，判断推迟第四预设时间后的链路恢复推迟时间是否大于所述第一预设时间，若推迟第四预设时间后的链路恢复推迟时间大于第一预设时间，所述恢复时间为第二预设时间，若推迟第四预设时间后的链路恢复推迟时间小于或等于所述第一预设时间，获取当前链路在第三预设时间内的带宽使用信息，按照上述规则判断当前链路在第三预设时间内的带宽使用信息，根据判断结果确定所述当前链路的恢复时间。
示例性的，第一预设时间可以为24小时，第二预设时间可以为凌晨3点，第三预设时间为历史m秒的时间，第四预设时间可以为半小时；实现流程如图3所示。
步骤301、判断当前总共推迟时间是否超过24个小时；
步骤302、若超过24个小时，则选取当日凌晨3点为有效的恢复时间；
步骤303、若没有超过24个小时，则获取当前链路历史m秒时间的带 宽使用信息；
其中，带宽使用信息可以为带宽值，简称带宽。
步骤304、判断带宽是否大于门限值n；
步骤305、若大于门限值n，则推迟半个小时，然后重复步骤301至步骤304；
步骤306、若小于或等于门限值，则取当前时间为有效的恢复时间。
这里，m秒是一个经验数据，示例性地可以为10秒左右，用户在前m秒内使用带宽较少，在接下来的时间使用带宽较少的概率也相对较大，带宽的门限值n取的也是经验值，示例值可以为上下行均小于100kbps。
一种可能的实现方式中，所述根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式，可以包括：
在所述恢复时间确定当前链路的恢复次数是否大于或等于预设门限次数；
若所述当前链路的恢复次数大于或等于预设门限次数，则确定当前链路恢复失败，若所述当前链路的恢复次数小于预设门限次数，强制当前链路重新进行链路建立，确定重新建立后的链路的建链模式是否为G.FAST模式；
若重新建立后的链路的建链模式为G.FAST模式，则确定当前链路恢复成功；
若重新建立后的链路的建链模式不为G.FAST模式，将所述恢复次数加一，确定恢复次数加一后的次数是否大于或等于预设门限次数，直到确定所述当前链路建链为G.FAST模式或当前链路恢复失败。
示例性的，如图4所示的流程；
步骤401、判断当前链路恢复重试次数是否超过门限值k；
步骤402、若超过门限值k，则恢复失败；
步骤403、若没有超过门限值k，则强迫链路重新建链；
步骤404、判断当前链路建链模式是否为G.FAST模式；
步骤405、当前链路建链模式为G.FAST模式，则恢复成功；
步骤406、当前链路建链模式不为G.FAST模式，重试次数加一，重复 步骤401至步骤404的过程，直到链路建链为G.FAST模式或链路恢复失败。
其中，重试次数门限值k的选取原则，是控制恢复的执行时间。因为恢复模块采用的强迫用户重新建链的方式进行恢复尝试，会给用户业务带来中断，需要尽量缩短中断的时间。对于G.FAST链路，一次重新建链的时间为20秒，恢复的执行时间尽量不要超过1分钟为宜，因此可以选取k＝3。
示例性地，所述方法还可以包括：接收状态查询命令，查询当前链路是否存在G.FAST线路建链模式回退的查询结果，发送查询结果给运营商。
其中，运营商下发状态查询命令，链路恢复装置接收状态查询命令，查询当前网元每个线路运行状态，可以为搜集当前网元上所有相关信息，包括不限于当前线路是否处于线路回退的状态、线路的历史回退状态的时间和建链模式恢复的时间，将查询结果返回给运营商，从而，可以为运营商提供接口方便运营商了解当前每个线路的GFAST建链模式回退情况，以及历史的状态回退的时间和恢复的时间。
示例性地，所述方法还可以包括：发送上报通知给网管，所述上报通知包括：当前链路存在G.FAST线路建链模式回退、或当前链路恢复成功通知、或当前链路恢复失败通知。
其中，链路恢复装置可以将G.FAST网元的链路恢复成功或者失败的通知上报给网管。
当运营商部署G.FAST接入设备时，由于外界的干扰，G.FAST线路可能会无法建链成G.FAST模式，而回退成VDSL2模式，这样就大大降低了提供给用户的服务带宽，运营商需要挑选出这种类型的链路，通过使链路反复重新建链直至G.FAST模式的方式来解决，这样，给运营商带来了很大的维护工作量，因此，为了减少运营商的维护工作，本实施例的链路恢复方法，通过判断线路是否属于G.FAST线路建链模式回退，并选择合适的时间进行自动恢复线路建链模式，从而，无需运营商干预，减少运营商的工作量，可以提高G.FAST系统稳定性，充分利用线路带宽保证G.FAST高速接入。
本申请实施例还提供一种链路恢复装置50，如图5所示，所述装置包括：确定单元501、处理单元502，其中，
所述确定单元501，配置为若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间，其中，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以VDSL2模式进行建链的情况；
所述处理单元502，配置为根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
示例性地，所述确定单元501，可以配置为：
若当前链路不为初次链路建立成功，获取所述当前链路的历史链路建立模式记录；
若所述历史链路建立模式记录中存在链路建立为G.FAST模式的记录，则确定所述当前链路为G.FAST线路建链模式回退。
示例性地，如图6所示，上述链路恢复装置50还可以包括：获取单元503，配置为若所述当前链路为初次链路建立成功，获取当前链路的网元端和终端的协议能力集；若根据所述网元端和终端的协议能力集确定所述网元端和终端均支持G.FAST模式，获取所述当前链路的历史失败建链次数；若所述历史失败建链次数大于或等于建链次数阈值，获取当前链路的电气长度；
所述确定单元501，还配置为若所述当前链路的电气长度大于或等于预设电气长度阈值，则确定当前链路为G.FAST线路建链模式回退。
示例性地，所述确定单元501，可以配置为：
若当前链路的链路恢复推迟时间大于第一预设时间，所述恢复时间为第二预设时间，所述链路恢复推迟时间为将当前链路的恢复时间推迟的时间总和；
若所述当前链路的链路恢复推迟时间小于或等于所述第一预设时间，获取所述当前链路在第三预设时间内的带宽使用信息；
若所述当前链路在第三预设时间内的带宽使用信息小于或等于预设门限值，所述恢复时间为当前时间；
若所述当前链路在第三预设时间内的带宽使用信息大于预设门限值，将当前链路的链路恢复推迟时间推迟第四预设时间，判断推迟第四预设时间后 的链路恢复推迟时间是否大于所述第一预设时间，直到确定所述当前链路的恢复时间。
示例性地，所述处理单元502，可以配置为：
若在所述恢复时间确定当前链路的恢复次数大于或等于预设门限次数，则确定当前链路恢复失败，若所述当前链路的恢复次数小于预设门限次数，强制当前链路重新进行链路建立；
若重新建立后的链路的建链模式为G.FAST模式，则确定当前链路恢复成功；
若重新建立后的链路的建链模式不为G.FAST模式，将所述恢复次数加一，确定恢复次数加一后的次数是否大于或等于预设门限次数，直到确定所述当前链路建链为G.FAST模式或当前链路恢复失败。
示例性地，如图6所示，链路恢复装置50还可以包括：接收单元504、查询单元505、发送单元506，
所述接收单元504，配置为接收状态查询命令；
所述查询单元505，配置为查询当前链路的运行状态，获得查询结果，其中，所述查询结果包括以下信息中的一种或多种：当前链路是否存在G.FAST线路建链模式回退的状态、当前链路的历史回退状态时间和当前链路的建链模式恢复时间；
所述发送单元506，配置为发送查询结果给运营商。
示例性地，如图6所示，链路恢复装置50还可以包括：发送单元506，配置为发送上报通知给网管，其中，所述上报通知包括：当前链路存在G.FAST线路建链模式回退、或当前链路恢复成功通知、或当前链路恢复失败通知。
示例性地，所述确定单元501，还可以配置为若根据所述网元端和终端的协议能力集确定所述网元端不支持G.FAST协议或所述终端不支持G.FAST协议，则确定当前链路不为G.FAST线路建链模式回退。
其中，本实施例提供的链路恢复装置的理解可以参考上述链路恢复方法实施例的说明，本实施例在此不再赘述。
本实施例提供的链路恢复装置，通过判断线路是否属于G.FAST线路建链模式回退，并选择合适的时间进行自动恢复线路建链模式，从而，无需运营商干预，减少运营商的工作量，可以提高G.FAST系统稳定性，充分利用线路带宽保证G.FAST高速接入。
本申请实施例还提供一种通信节点60，如图7所示，所述通信节点60包括：处理器601，配置为若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间，其中，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以VDSL2模式进行建链的情况；还配置为根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
示例性地，所述处理器601，可以配置为：
若当前链路不为初次链路建立成功，获取所述当前链路的历史链路建立模式记录；
若所述历史链路建立模式记录中存在链路建立为G.FAST模式的记录，则确定所述当前链路为G.FAST线路建链模式回退。
示例性地，处理器601，可以配置为若所述当前链路为初次链路建立成功，获取当前链路的网元端和终端的协议能力集；若根据所述网元端和终端的协议能力集确定所述网元端和终端均支持G.FAST模式，获取所述当前链路的历史失败建链次数；若所述历史失败建链次数大于或等于建链次数阈值，获取当前链路的电气长度；若所述当前链路的电气长度大于或等于预设电气长度阈值，则确定当前链路为G.FAST线路建链模式回退。
示例性地，所述处理器601，可以配置为：
若当前链路的链路恢复推迟时间大于第一预设时间，所述恢复时间为第二预设时间，所述链路恢复推迟时间为将当前链路的恢复时间推迟的时间总和；
若所述当前链路的链路恢复推迟时间小于或等于所述第一预设时间，获取所述当前链路在第三预设时间内的带宽使用信息；
若所述当前链路在第三预设时间内的带宽使用信息小于或等于预设门限 值，所述恢复时间为当前时间；
若所述当前链路在第三预设时间内的带宽使用信息大于预设门限值，将当前链路的链路恢复推迟时间推迟第四预设时间，判断推迟第四预设时间后的链路恢复推迟时间是否大于所述第一预设时间，直到确定所述当前链路的恢复时间。
示例性地，所述处理器601，可以配置为：
若在所述恢复时间确定当前链路的恢复次数大于或等于预设门限次数，则确定当前链路恢复失败，若所述当前链路的恢复次数小于预设门限次数，强制当前链路重新进行链路建立；
若重新建立后的链路的建链模式为G.FAST模式，则确定当前链路恢复成功；
若重新建立后的链路的建链模式不为G.FAST模式，将所述恢复次数加一，确定恢复次数加一后的次数是否大于或等于预设门限次数，直到确定所述当前链路建链为G.FAST模式或当前链路恢复失败。
示例性地，如图8所示，所述通信节点60还可以包括：接收器602、发送器603，
所述接收器602，配置为接收状态查询命令；
所述处理器601，配置为查询当前链路的运行状态，获得查询结果，其中，所述查询结果包括以下信息中的一种或多种：当前链路是否存在G.FAST线路建链模式回退的状态、当前链路的历史回退状态时间和当前链路的建链模式恢复时间；
所述发送器603，配置为发送查询结果给运营商。
示例性地，如图8所示，所述通信节点60还可以包括：发送器603，配置为发送上报通知给网管，其中，所述上报通知包括：当前链路存在G.FAST线路建链模式回退、或当前链路恢复成功通知、或当前链路恢复失败通知。
示例性地，所述处理器601，还可以配置为若根据所述网元端和终端的协议能力集确定所述网元端不支持G.FAST协议或所述终端不支持G.FAST协议，则确定当前链路不为G.FAST线路建链模式回退。
其中，本实施例提供的通信节点的理解可以参考上述链路恢复方法实施例的说明，本实施例在此不再赘述。
本实施例提供的通信节点，通过判断线路是否属于G.FAST线路建链模式回退，并选择合适的时间进行自动恢复线路建链模式，从而，无需运营商干预，减少运营商的工作量，可以提高G.FAST系统稳定性，充分利用线路带宽保证G.FAST高速接入。
本申请实施例还提供一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于查看当前链路是否存在G.FAST线路建链模式回退的现象，查看链路的历史模式回退的次数，回退发生的时间以及回退恢复的时间。
本申请实施例还提供一种主动上报机制，可以及时上报链路发生了线路建链模式恢复的现象。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上， 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
以上所述，仅为本申请的示例性实施例而已，并非用于限定本申请的保护范围。
工业实用性
本申请实施例提供一种链路恢复方法、装置和通信节点，可以检测G.FAST线路建链模式回退，自动地恢复链路的建链模式和建链速率，无需运营商干预，减少运营商的工作量，可以提高G.FAST系统稳定性，充分利用线路带宽保证G.FAST高速接入。

Claims (15)

  1. 一种链路恢复方法，包括：
    若确定当前链路为快速接入数字终端G.FAST线路建链模式回退，确定所述当前链路的恢复时间，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以超高速数字用户线路VDSL2模式进行建链的情况；
    根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
  2. 根据权利要求1所述的方法，在所述若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间之前，所述方法还包括：
    若当前链路不为初次链路建立成功，获取所述当前链路的历史链路建立模式记录；
    若所述历史链路建立模式记录中存在链路建立为G.FAST模式的记录，则确定所述当前链路为G.FAST线路建链模式回退。
  3. 根据权利要求1所述的方法，在所述若确定当前链路为G.FAST线路建链模式回退，确定所述当前链路的恢复时间之前，所述方法还包括：
    若所述当前链路为初次链路建立成功，获取当前链路的网元端和终端的协议能力集；
    若根据所述网元端和终端的协议能力集确定所述网元端和终端均支持G.FAST模式，获取所述当前链路的历史失败建链次数；
    若所述历史失败建链次数大于或等于建链次数阈值，获取当前链路的电气长度；
    若所述当前链路的电气长度大于或等于预设电气长度阈值，则确定当前链路为G.FAST线路建链模式回退。
  4. 根据权利要求1至3中任一项所述的方法，其中，所述确定所述当前链路的恢复时间，包括：
    若当前链路的链路恢复推迟时间大于第一预设时间，所述恢复时间为第 二预设时间，所述链路恢复推迟时间为将当前链路的恢复时间推迟的时间总和；
    若所述当前链路的链路恢复推迟时间小于或等于所述第一预设时间，获取所述当前链路在第三预设时间内的带宽使用信息；
    若所述当前链路在第三预设时间内的带宽使用信息小于或等于预设门限值，所述恢复时间为当前时间；
    若所述当前链路在第三预设时间内的带宽使用信息大于预设门限值，将当前链路的链路恢复推迟时间推迟第四预设时间，判断推迟第四预设时间后的链路恢复推迟时间是否大于所述第一预设时间，直到确定所述当前链路的恢复时间。
  5. 根据权利要求1至3中任一项所述的方法，其中，所述根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式，包括：
    若在所述恢复时间确定当前链路的恢复次数大于或等于预设门限次数，则确定当前链路恢复失败，若所述当前链路的恢复次数小于预设门限次数，强制当前链路重新进行链路建立；
    若重新建立后的链路的建链模式为G.FAST模式，则确定当前链路恢复成功；
    若重新建立后的链路的建链模式不为G.FAST模式，将所述恢复次数加一，确定恢复次数加一后的次数是否大于或等于预设门限次数，直到确定所述当前链路建链为G.FAST模式或当前链路恢复失败。
  6. 根据权利要求1所述的方法，所述方法还包括：
    接收状态查询命令，查询当前链路的运行状态，获得查询结果，所述查询结果包括以下信息中的一种或多种：当前链路是否存在G.FAST线路建链模式回退的状态、当前链路的历史回退状态时间和当前链路的建链模式恢复时间；
    发送查询结果给运营商。
  7. 根据权利要求1所述的方法，所述方法还包括：
    发送上报通知给网管，所述上报通知包括：当前链路存在G.FAST线路 建链模式回退、或当前链路恢复成功通知、或当前链路恢复失败通知。
  8. 根据权利要求3所述的方法，在所述获取当前链路的网元端和终端的协议能力集之后，所述方法还包括：
    若根据所述网元端和终端的协议能力集确定所述网元端不支持G.FAST协议或所述终端不支持G.FAST协议，则确定当前链路不为G.FAST线路建链模式回退。
  9. 一种链路恢复装置，包括：确定单元、处理单元，其中，
    所述确定单元，配置为若确定当前链路为快速接入数字终端G.FAST线路建链模式回退，确定所述当前链路的恢复时间，其中，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以超高速数字用户线路VDSL2模式进行建链的情况；
    所述处理单元，配置为根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
  10. 根据权利要求9所述的装置，其中，所述确定单元，配置为：若当前链路不为初次链路建立成功，获取所述当前链路的历史链路建立模式记录；若所述历史链路建立模式记录中存在链路建立为G.FAST模式的记录，则确定所述当前链路为G.FAST线路建链模式回退。
  11. 根据权利要求9所述的装置，所述装置还包括：获取单元，配置为若所述当前链路为初次链路建立成功，获取当前链路的网元端和终端的协议能力集；若根据所述网元端和终端的协议能力集确定所述网元端和终端均支持G.FAST模式，获取所述当前链路的历史失败建链次数；若所述历史失败建链次数大于或等于建链次数阈值，获取当前链路的电气长度；
    所述确定单元，还配置为若所述当前链路的电气长度大于或等于预设电气长度阈值，则确定当前链路为G.FAST线路建链模式回退。
  12. 根据权利要求9至11中任一项所述的装置，其中，所述确定单元，配置为：
    若当前链路的链路恢复推迟时间大于第一预设时间，所述恢复时间为第二预设时间，所述链路恢复推迟时间为将当前链路的恢复时间推迟的时间总 和；
    若所述当前链路的链路恢复推迟时间小于或等于所述第一预设时间，获取所述当前链路在第三预设时间内的带宽使用信息；
    若所述当前链路在第三预设时间内的带宽使用信息小于或等于预设门限值，所述恢复时间为当前时间；
    若所述当前链路在第三预设时间内的带宽使用信息大于预设门限值，将当前链路的链路恢复推迟时间推迟第四预设时间，判断推迟第四预设时间后的链路恢复推迟时间是否大于所述第一预设时间，直到确定所述当前链路的恢复时间。
  13. 根据权利要求9至11中任一项所述的装置，其中，所述处理单元，配置为：
    若在所述恢复时间确定当前链路的恢复次数大于或等于预设门限次数，则确定当前链路恢复失败，若所述当前链路的恢复次数小于预设门限次数，强制当前链路重新进行链路建立；
    若重新建立后的链路的建链模式为G.FAST模式，则确定当前链路恢复成功；
    若重新建立后的链路的建链模式不为G.FAST模式，将所述恢复次数加一，确定恢复次数加一后的次数是否大于或等于预设门限次数，直到确定所述当前链路建链为G.FAST模式或当前链路恢复失败。
  14. 一种通信节点，包括：处理器，配置为若确定当前链路为快速接入数字终端G.FAST线路建链模式回退，确定所述当前链路的恢复时间，其中，所述G.FAST线路建链模式回退为：在所述当前链路的终端和网元端均支持G.FAST模式时，所述当前链路以超高速数字用户线路VDSL2模式进行建链的情况；还配置为根据所述恢复时间和预设链路恢复方法将所述当前链路建链为G.FAST模式。
  15. 一种计算机可读介质，存储有计算机可执行指令，所述计算机可执行指令被处理器执行时实现如权利要求1至8中任一项所述的链路恢复方法的步骤。
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