CN106034043A - Method and apparatus for improving switching efficiency of multiplexing segments in packet transmit network - Google Patents
Method and apparatus for improving switching efficiency of multiplexing segments in packet transmit network Download PDFInfo
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- CN106034043A CN106034043A CN201510119981.6A CN201510119981A CN106034043A CN 106034043 A CN106034043 A CN 106034043A CN 201510119981 A CN201510119981 A CN 201510119981A CN 106034043 A CN106034043 A CN 106034043A
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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
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
- H04L41/0836—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability to enhance reliability, e.g. reduce downtime
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/68—Pseudowire emulation, e.g. IETF WG PWE3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/25—Routing or path finding in a switch fabric
- H04L49/256—Routing or path finding in ATM switching fabrics
- H04L49/258—Grouping
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method and an apparatus for improving switching efficiency of multiplexing segments in a packet transmit network. The method includes obtaining a protection state of a multiplexing segment protection group; according to the obtained protection state of the multiplexing segment protection group, enabling pseudo line control word processing of a time-division-multiplexing simulation service on a working port in a working state in the multiplexing segment protection group, and according to the obtained protection state of the multiplexing segment protection group, disenabling the pseudo wire control word processing of the time-division-multiplexing simulation service on a non-working port in a non-working state in the multiplexing segment protection group. The method can be used to reduce service interruption time.
Description
Technical field
The present invention relates to Packet Transport Network (PTN:Packet Transmit Network) field, particularly to
After time division multiplex (TDM:Time Division Multiplexing) artificial service configuration multiplex section protection,
The method and device of efficiency is switched in a kind of raising.
Background technology
Along with the evolution of technology, bearer network is gradually at the agreement (IP:Internet of interconnection between whole network
Protocol) changing direction evolution, for compatible existing a large amount of TDM equipment, PTN device must possess and connects
Enter the ability of conventional synchronous digital system (SDH:Synchronous Digital Hierarchy) business, simultaneously
Also must be compatible with traditional SDH resist technology, therefore PTN device all achieves linear multiplex section protection.?
After PTN network realizes multiplex section protection, owing to bearing mode and traditional SDH network of business exist
, therefore, easily there is the problem that switching time exceeds standard portfolio is bigger when in bigger difference.
Carrying TDM business in PTN network has the process realizing control word, L bit to be the one of control word
Individual position, existing relevant treatment is as follows:
(1) L bit set is set after customer side detects Signal Fail, detects that client signal takes after recovering
Disappear L bit set.
(2) the pseudo wire PDU L bit set received is detected at network side, it is believed that the client signal of far-end loses
Effect, needs to insert alarm under the customer side of local terminal.
(3) data of network side need to insert under the customer side of TDM business alarm when occurring to interrupt.
Due to inevitably some customer sides or the one of network side during multiplex section rearrangement
A little alarms, it is complicated that the function that these control words are relevant in the process can increase some when participating in Business Processing
Property, finally make switching time exceed standard.
Summary of the invention
It is an object of the invention to provide a kind of method improving multiplex section rearrangement frequency in grouping conveying network and
Device, it is possible to after solving to realize multiplex section protection in PTN network, occur when portfolio is bigger switches
Time excessive problem.
According to an aspect of the invention, it is provided multiplex section protection group switches effect in a kind of raising Packet Transport Network
The method of rate, including:
Obtain the guard mode of multiplex section protection group；
According to the guard mode of the multiplex section protection group got, by running order in multiplex section protection group
The pseudo-wire control word of the time division multiplex artificial service on working port processes and enables, and
According to the guard mode of the multiplex section protection group got, multiplex section protection group will be in off working state
Inoperative port on time division multiplex artificial service pseudo-wire control word process go enable.
Preferably, also include:
After the pseudo-wire control word process of time division multiplex artificial service has carried out described enable and gone enable to process, right
Working port in running order in multiplex section protection group and be in off working state inoperative port work as
Front state is polled；
If by poll, finding that the current state of described working port or inoperative port there occurs change, then change
The pseudo-wire control word of change time division multiplex artificial service processes.
Preferably, also include: if by poll, finding described working port or the current state of inoperative port
Constant, then keep the pseudo-wire control word of time division multiplex artificial service to process.
Preferably, described to working port in running order in multiplex section protection group be in inoperative shape
The step that the current state of the inoperative port of state is polled includes:
A preset intervalometer, and according to the timing cycle configured in running order in multiplex section protection group
Working port is polled with the current state of the inoperative port being in off working state.
Preferably, if described passes through poll, find that the current state of described working port or inoperative port is sent out
Given birth to change, then the step of the pseudo-wire control word process changing time division multiplex artificial service includes:
If described working port is switched to off working state by duty, then will switch to the work of off working state
The pseudo-wire control word process making the time division multiplex artificial service on port goes to enable；
If described inoperative port is switched to duty by off working state, then after time delay preset time, will
The pseudo-wire control word switching to the time division multiplex artificial service on the inoperative port of duty processes and enables.
Preferably, the described puppet by the time division multiplex artificial service on the working port switching to off working state
Line traffic control word processing goes the step enabled also to include:
If in the time division multiplex artificial service pseudo wire PDU detected on the working port switching to off working state
L bit set, then eliminate the alarm arranging customer side according to described L bit set.
According to a further aspect in the invention, it is provided that in a kind of raising Packet Transport Network, multiplex section protection group switches effect
The device of rate, including:
Acquisition module, for obtaining the guard mode of multiplex section protection group；
Enable module, for the guard mode according to the multiplex section protection group got, by multiplex section protection group
The pseudo-wire control word of the time division multiplex artificial service in running order working port processes and enables, and
Go to enable module, for the guard mode according to the multiplex section protection group got, by multiplex section protection group
In the pseudo-wire control word of time division multiplex artificial service that is on the inoperative port of off working state process and go to make
Energy.
Preferably, also include:
Poller module, has carried out described enable for processing in the pseudo-wire control word of time division multiplex artificial service and has gone
After enable processes, to working port in running order in multiplex section protection group and be in the non-of off working state
The current state of working port is polled；
Change module, if for by poll, finding that the current state of described working port or inoperative port is sent out
Given birth to change, then the pseudo-wire control word changing time division multiplex artificial service processes.
Preferably, described change module further comprises:
First switching submodule, if being switched to off working state for described working port by duty, then will
The pseudo-wire control word switching to the time division multiplex artificial service on the working port of off working state processes goes to enable；
Second switching submodule, if being switched to duty by off working state, then for described inoperative port
After time delay preset time, by the puppet of the time division multiplex artificial service on the inoperative port switching to duty
Line traffic control word processing enables.
Preferably, described first switching submodule further comprises:
Clearing cell, if for detecting the time division multiplex emulation industry on the working port switching to off working state
L bit set in business pseudo wire PDU, then eliminate the alarm arranging customer side according to described L bit set.
Compared with prior art, the beneficial effects of the present invention is: multiplex section can be improved by providing one
The method switching efficiency of protection, reduces the time of service disconnection.
Accompanying drawing explanation
Fig. 1 is that in the raising grouping conveying network that the embodiment of the present invention provides, the method for multiplex section rearrangement frequency is former
Reason figure；
Fig. 2 is the device knot improving multiplex section rearrangement frequency in grouping conveying network that the embodiment of the present invention provides
Composition；
Fig. 3 is improving at each of multiplex section rearrangement frequency in grouping conveying network of providing of the embodiment of the present invention
Reason unit and interactive relation schematic diagram thereof；
Fig. 4 is the control stream of multiplex section rearrangement frequency in the raising grouping conveying network that the embodiment of the present invention provides
Cheng Tu；
Fig. 5 is the operation stream of multiplex section rearrangement frequency in the raising grouping conveying network that the embodiment of the present invention provides
Cheng Tu.
Detailed description of the invention
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that described below
Preferred embodiment be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Fig. 1 is that in the raising grouping conveying network that the embodiment of the present invention provides, the method for multiplex section rearrangement frequency is former
Reason figure, as it is shown in figure 1, concrete step is as follows:
Step S101: obtain the guard mode of multiplex section protection group.
Step S102: according to the guard mode of the multiplex section protection group got, will locate in multiplex section protection group
The pseudo-wire control word of the time division multiplex artificial service on the working port of duty processes and enables.
Step S103: according to the guard mode of the multiplex section protection group got, will locate in multiplex section protection group
The pseudo-wire control word of the time division multiplex artificial service on the inoperative port of off working state processes goes to enable.
Step S104: the pseudo-wire control word at time division multiplex artificial service processes and carried out described enable and gone to make
After processing, to working port in running order in multiplex section protection group and the non-work being in off working state
The current state making port is polled.
In step S104, described to working port in running order in multiplex section protection group be in
The step that the current state of the inoperative port of off working state is polled includes:
A preset intervalometer, and according to the timing cycle configured in running order in multiplex section protection group
Working port is polled with the current state of the inoperative port being in off working state.
Step S105: if by poll, find that the current state of described working port or inoperative port occurs
Change, then the pseudo-wire control word changing time division multiplex artificial service processes.
In step S105, also include: if by poll, find described working port or inoperative port
Current state is constant, then keep the pseudo-wire control word of time division multiplex artificial service to process.
Further, if described passes through poll, described working port or the current state of inoperative port are found
There occurs change, then the step of the pseudo-wire control word process changing time division multiplex artificial service includes:
If described working port is switched to off working state by duty, then will switch to the work of off working state
The pseudo-wire control word process making the time division multiplex artificial service on port goes to enable；
If described inoperative port is switched to duty by off working state, then after time delay preset time, will
The pseudo-wire control word switching to the time division multiplex artificial service on the inoperative port of duty processes and enables.
Further, described by the time division multiplex artificial service on the working port switching to off working state
Pseudo-wire control word processes the step going to enable and also includes:
If in the time division multiplex artificial service pseudo wire PDU detected on the working port switching to off working state
L bit set, then eliminate the alarm arranging customer side according to described L bit set.
Fig. 2 is the device knot improving multiplex section rearrangement frequency in grouping conveying network that the embodiment of the present invention provides
Composition, as in figure 2 it is shown, include: acquisition module 20, enable module 21, go enable module 22, poll mould
Block 23 and change module 24.
Described acquisition module 20 is for obtaining the guard mode of multiplex section protection group.
Multiplex section, for the guard mode according to the multiplex section protection group got, is protected by described enable module 21
The pseudo-wire control word protecting the time division multiplex artificial service on working port in running order in group processes enable.
The guard mode of the described multiplex section protection group going enable module 22 to get for basis, by multiplex section
At the pseudo-wire control word of the time division multiplex artificial service being in protection group on the inoperative port of off working state
Reason goes to enable.
Described poller module 23 makes described in having carried out in the process of the pseudo-wire control word of time division multiplex artificial service
After enable and can be gone to process, to working port in running order in multiplex section protection group and be in inoperative shape
The current state of the inoperative port of state is polled.
If described change module 24 for by poll, finds the current of described working port or inoperative port
State there occurs change, then the pseudo-wire control word changing time division multiplex artificial service processes.Wherein, described change
If the first switching submodule of module is switched to off working state for described working port by duty, then will
The pseudo-wire control word switching to the time division multiplex artificial service on the working port of off working state processes goes to enable.
If the second switching submodule of described change module is switched to work for described inoperative port by off working state
Make state, then, after time delay preset time, the time division multiplex on the inoperative port switching to duty is imitated
The pseudo-wire control word of true business processes and enables.If the clearing cell of described first switching submodule is cut for detecting
L bit set in the time division multiplex artificial service pseudo wire PDU being changed on the working port of off working state, then
Eliminate the alarm that customer side is set according to described L bit set.
Fig. 3 is improving at each of multiplex section rearrangement frequency in grouping conveying network of providing of the embodiment of the present invention
Reason unit and interactive relation schematic diagram thereof, as it is shown on figure 3, include: artificial service processing unit 30, control
Word processing unit 31, multiplex section protection control unit 32 and control word process and enable control unit 33.
Artificial service processing unit 30 is for being responsible for encapsulation and the decapsulation of TDM artificial service pseudo wire PDU.
Control word processing unit 31 is used for being responsible for TDM artificial service pseudo-wire control word and processes, and controls pseudo-wire
The opening and closing that control word processes, can be realized by software or hardware.Concrete implementation function at least includes:
(1) L bit set is set after customer side detects Signal Fail, detects that client signal takes after recovering
Disappear L bit set.
(2) the pseudo wire PDU L bit set received is detected at network side, it is believed that the client signal of far-end loses
Effect, needs to insert alarm under the customer side of local terminal.
(3) data of network side need to insert under the customer side of TDM artificial service alarm when occurring to interrupt.
Multiplex section protection control unit 32, for being responsible for safeguarding the guard mode of multiplex section protection group, performs protection
Action.
Control word processes enable control unit 33 and makes for the control word process controlling certain TDM artificial service
State, i.e. decision-making TDM artificial service whether can open control word processing functions.
Concrete implementation method is: control word processes enable control unit 31 and obtains current multiplex section protection group
State, processing according to the control word of current multiplex section protection which bar TDM artificial service of group state decision-making should
Enable, and the enabled state of corresponding TDM artificial service is configured in control word processing unit 32, finally
Artificial service processing unit 33 encapsulates out final business pseudo wire PDU or the industry received according to rule treatments
Business pseudo wire PDU.
Fig. 4 is the control stream of multiplex section rearrangement frequency in the raising grouping conveying network that the embodiment of the present invention provides
Cheng Tu, as shown in Figure 4, specifically comprises the following steps that
Step S401: configuration multiplex section protection (MSP:Multiplex Section Protection).
Step S402: the process of inoperative port control word is set and goes to enable.Current according to multiplex section protection group
Activestandby state, processes the control word being in off working state port and goes to enable；
Step S403: working port control word is set and processes enable.According to current active and standby of multiplex section protection group
State, enables the Service control word processing in running order port.
Step S404: complete.
Wherein, step S402 and step S403 are that synchronization is carried out.
Fig. 5 is the operation stream of multiplex section rearrangement frequency in the raising grouping conveying network that the embodiment of the present invention provides
Cheng Tu, as it is shown in figure 5, the concrete operations that PTN terminal is when configuration protection group is at intervalometer poll are such as
Under:
Step S501: timed message arrives.Realizing an intervalometer, timing cycle can configure, typically join
Putting is 100ms, can be realized by hardware or software.
Step S502: inquiry multiplex section protection group state.That is, the protection of intervalometer poll multiplex section protection group
State.
Step S503: judge current state change.After timer expiry, multiplex section protection detected
The state of group changes, and enters step S504, any change does not occur, does not processes, and enters step
Rapid S506.
Step S504: the process of inoperative port control word is set and goes to enable, cleared alarm.Working port switches
Become inoperative port, carry out enabling control word and process, and remove the value according to control word customer side is set
Alarm.
Step S505: time delay Preset Time, arranges working port control word and processes enable.Inoperative port is cut
Changing working port, time delay a period of time into, typically this time can be 2～3 seconds, enables control word and processes.
Step S506: complete.
The dress of multiplex section rearrangement frequency during the most application improves grouping conveying network in large-scale PTN device
Putting, control word processing unit is realized by software, thus realizes the circuit emulation service of E1.Wherein, for real
The veneer of existing control word processing unit encapsulates respectively at different chips due to alarm detection and the pseudo-wire of customer side
Middle realization, therefore can only be realized control word by software and process enable, thus effectively reduce E1 artificial service
The multiplex section protection exchanging time.Concrete function shows themselves in that
(1) customer side detects that alarm indication signal (AIS:Alarm Indication Signal) sets after producing
Put L bit set, detect that AIS cancels L bit set after disappearing.
(2) if E1 framing format, when the pseudo wire PDU that network side receives detects L bit set,
E1-AIS is inserted to customer side.
Concrete implementation step shows themselves in that
(1) the multiplex section protection group on configuration veneer, software according to the state of protection group to duty port
On all E1 artificial services be controlled word processing, on the port of off working state all E1 emulate
Business is not controlled word processing.
(2) one cycle of startup is the absolute timer of 100ms.
(3) inquire about the state of multiplex section protection group after timer expiry, be not changed in not processing.
(4) perform after the change of multiplex section protection group state being detected to operate as follows:
Switching to working port for inoperative port, after time delay 3 seconds, software starts the institute on working port
Business is had to be controlled word processing；
Inoperative port switches to for working port, software remove on inoperative port at once all business due to
Receive the lower alarm inserted of the abnormal protection of control word, and stop processing controls word at once.
The dress of multiplex section rearrangement frequency during the most application improves grouping conveying network in large-scale PTN device
Putting, wherein, control word processing unit is realized by hardware, and type of service is the packet switch of standard virtual container VC4
Circuit simulation (CEP:Circuit Emulation over Packet) business in network.For realizing control word
The customer side alarm detection of the veneer of processing unit and the encapsulation of pseudo wire PDU are all to complete in a chip
, therefore hardware can complete the operation of all control words, provides enable compared to software and controls interface, from
And effectively reduce the multiplex section rearrangement time of CEP artificial service.Concrete function shows themselves in that
(1) customer side detects that MS-AIS arranges L bit set after producing, and detects that MS-AIS disappears
Rear cancellation L bit set.
(2), when the pseudo wire PDU that network side receives detects L bit set, MS-AIS is inserted to customer side.
Concrete implementation step shows themselves in that
(1) the multiplex section protection group on configuration veneer, software, according to the state of protection group, arranges duty
All CEP artificial service control words on port process and enable, and arrange all CEP on off working state port
Artificial service control word processes and does not enables.
(2) one cycle of startup is the absolute timer of 100ms.
(3) inquire about the state of multiplex section protection group after timer expiry, be not changed in not processing
(4) following operation is performed after the change of multiplex section protection group state being detected:
Working port switches to for inoperative port, all industry on software design patterns working port after time delay 3 seconds
The control word of business processes and enables；
Switching to inoperative port for working port, software notification hardware is removed owing to receiving control word exception
Protect the lower alarm inserted, and the control word arranging all business under inoperative port processes and goes to enable.
In sum, have following technical effect that can be by providing a kind of multiplex section protection of improving for the present invention
The method switching efficiency so that during reversed process working port becomes inoperative port, it is not necessary to place
Manage the operation of some control words that there is no need, it is possible to effectively reduce multiplex section protection exchanging TDM service disconnection
Time.Additionally, have only to the relevant of in running order Business Processing control word under normal operation
Operation, compared to decreasing half in the past, for the environment of software processes control word, when business configuration amount is bigger
Software burden can be alleviated.
Although above the present invention being described in detail, but the invention is not restricted to this, the art technology
Personnel can carry out various amendment according to the principle of the present invention.Therefore, all amendments made according to the principle of the invention,
All should be understood to fall into protection scope of the present invention.
Claims (10)
1. one kind is improved the method that in Packet Transport Network, multiplex section protection group switches efficiency, it is characterised in that bag
Include:
Obtain the guard mode of multiplex section protection group；
According to the guard mode of the multiplex section protection group got, by running order in multiplex section protection group
The pseudo-wire control word of the time division multiplex artificial service on working port processes and enables, and
According to the guard mode of the multiplex section protection group got, multiplex section protection group will be in off working state
Inoperative port on time division multiplex artificial service pseudo-wire control word process go enable.
Method the most according to claim 1, it is characterised in that also include:
After the pseudo-wire control word process of time division multiplex artificial service has carried out described enable and gone enable to process, right
Working port in running order in multiplex section protection group and be in off working state inoperative port work as
Front state is polled；
If by poll, finding that the current state of described working port or inoperative port there occurs change, then change
The pseudo-wire control word of change time division multiplex artificial service processes.
Method the most according to claim 2, it is characterised in that also include: if by poll, find
The current state of described working port or inoperative port is constant, then keep the pseudo-line traffic control of time division multiplex artificial service
Word processing processed.
Method the most according to claim 2, it is characterised in that described locates in multiplex section protection group
It is polled in the working port of duty and the current state of the inoperative port being in off working state
Step includes:
A preset intervalometer, and according to the timing cycle configured in running order in multiplex section protection group
Working port is polled with the current state of the inoperative port being in off working state.
Method the most according to claim 2, it is characterised in that if described passes through poll, find institute
The current state stating working port or inoperative port there occurs change, then change the puppet of time division multiplex artificial service
The step of line traffic control word processing includes:
If described working port is switched to off working state by duty, then will switch to the work of off working state
The pseudo-wire control word process making the time division multiplex artificial service on port goes to enable；
If described inoperative port is switched to duty by off working state, then after time delay preset time, will
The pseudo-wire control word switching to the time division multiplex artificial service on the inoperative port of duty processes and enables.
Method the most according to claim 5, it is characterised in that described will switch to off working state
Working port on time division multiplex artificial service pseudo-wire control word process go enable step also include:
If in the time division multiplex artificial service pseudo wire PDU detected on the working port switching to off working state
L bit set, then eliminate the alarm arranging customer side according to described L bit set.
7. one kind is improved multiplex section protection group in Packet Transport Network and switches the device of efficiency, it is characterised in that bag
Include:
Acquisition module, for obtaining the guard mode of multiplex section protection group；
Enable module, for the guard mode according to the multiplex section protection group got, by multiplex section protection group
The pseudo-wire control word of the time division multiplex artificial service in running order working port processes and enables, and
Go to enable module, for the guard mode according to the multiplex section protection group got, by multiplex section protection group
In the pseudo-wire control word of time division multiplex artificial service that is on the inoperative port of off working state process and go to make
Energy.
Device the most according to claim 7, it is characterised in that also include:
Poller module, has carried out described enable for processing in the pseudo-wire control word of time division multiplex artificial service and has gone
After enable processes, to working port in running order in multiplex section protection group and be in the non-of off working state
The current state of working port is polled；
Change module, if for by poll, finding that the current state of described working port or inoperative port is sent out
Given birth to change, then the pseudo-wire control word changing time division multiplex artificial service processes.
Device the most according to claim 8, it is characterised in that described change module further comprises:
First switching submodule, if being switched to off working state for described working port by duty, then will
The pseudo-wire control word switching to the time division multiplex artificial service on the working port of off working state processes goes to enable；
Second switching submodule, if being switched to duty by off working state, then for described inoperative port
After time delay preset time, by the puppet of the time division multiplex artificial service on the inoperative port switching to duty
Line traffic control word processing enables.
Device the most according to claim 8, it is characterised in that described first switching submodule is further
Also include:
Clearing cell, if for detecting the time division multiplex emulation industry on the working port switching to off working state
L bit set in business pseudo wire PDU, then eliminate the alarm arranging customer side according to described L bit set.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119981.6A CN106034043B (en) | 2015-03-18 | 2015-03-18 | Method and device for improving multiplex section switching frequency in packet transport network |
| PCT/CN2015/090173 WO2016145812A1 (en) | 2015-03-18 | 2015-09-21 | Method and apparatus for improving rearranging efficiency of multiplexing segments in packet transport network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119981.6A CN106034043B (en) | 2015-03-18 | 2015-03-18 | Method and device for improving multiplex section switching frequency in packet transport network |
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| CN106034043A true CN106034043A (en) | 2016-10-19 |
| CN106034043B CN106034043B (en) | 2020-01-07 |
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| CN108418649A (en) * | 2018-02-13 | 2018-08-17 | 中国联合网络通信集团有限公司 | A kind of method and apparatus calculating service delay |
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| WO2016145812A1 (en) | 2016-09-22 |
| CN106034043B (en) | 2020-01-07 |
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