CN106330371A - Information bearing method and network architecture - Google Patents
Information bearing method and network architecture Download PDFInfo
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- CN106330371A CN106330371A CN201510334527.2A CN201510334527A CN106330371A CN 106330371 A CN106330371 A CN 106330371A CN 201510334527 A CN201510334527 A CN 201510334527A CN 106330371 A CN106330371 A CN 106330371A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
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Abstract
The embodiment of the invention discloses an information bearing method. The method comprises steps: a signal carrying user signal dwell time is received; a node concatenated dwell time accumulation value during the signal transmission process is calculated; according to the node concatenated dwell time accumulation value, the user signal dwell time is updated; and a signal carrying the updated user signal dwell time is transmitted. The embodiment of the invention also discloses a network architecture for information bearing.
Description
Technical field
The present invention relates to technical field of information processing, particularly relate to a kind of method carrying information and the network architecture.
Background technology
Traditional communication network uses global positioning system (Global Positioning System, GPS) to receive
Machine carries out time synchronized；On the one hand, develop and communication network scale along with the multiformity of telecommunication network service
Constantly expand, network time synchronization is realized cost and safety is had higher requirement；In recent years,
Realize network time synchronization become a kind of emerging simultaneous techniques by distributing synchronizing information in network, as
Ethernet and Packet Transport Network (Packet Transport Network, PTN) use 1588 Perfect Times
Simultaneous techniques realizes network time synchronization.On the other hand, along with the sharp increase of network capacity, optical transfer network
Synchronous Digital Hierarchy (the Synchronous that (OpticalTransportNetwork, OTN) technical substitution is traditional
Digital Hierarchy, SDH) technology, dense wave division multipurpose (Dense Wavelength Division
Multiplexing, WDM) technology becomes main backbone network tranmission techniques；Further, along with the integration of three networks
And the surge of number of network users, OTN equipment also begins to apply in Metropolitan Area Network (MAN) and access network.
Existing network Time synchronization technique commercial be mostly the network internal of single type realize communication equipment it
Between synchronization, belong to a time synchronization domains；But, along with the further fusion of network, will deposit future
The most multiple sub-networks belong to the demand of independent synchronization field；And OTN is as main transmission
Net, multiple different access users via OTN carrying transmit time, the most independently realize each connecing
The time synchronized of access customer, the time synchronization information the most how carrying different user network is to need asking of solution badly
Topic.
Summary of the invention
In view of this, embodiment of the present invention expectation provides a kind of method carrying information and the network architecture, it is possible to
Effectively carry time synchronization information, it is achieved access the time synchronized of user.
The technical scheme of the embodiment of the present invention is achieved in that
The embodiment of the present invention provides a kind of method carrying information, and described method includes: receives and carries user's letter
The signal of number residence time；Calculate described signal node cascade residence time accumulated value during transmitting；
Subscriber signal residence time is updated according to described node cascade residence time accumulated value；Send after carrying renewal
The signal of subscriber signal residence time.
In such scheme, the signal of subscriber signal residence time is carried in described reception, including: user will be carried
One or more subscriber signals of signal residence time carry out framing processing, map or are multiplexed with one or more
Ground floor network signal.
In such scheme, described calculating described signal node cascade residence time accumulated value during transmitting,
Including:
When subscriber signal is mapped as ground floor network signal, calculate each of described ground floor network signal process
The residence time of node, adds up the residence time of described each node, obtains the accumulation of node cascade residence time
Value；Or, when subscriber signal is multiplexed with ground floor network signal, calculates described ground floor network signal and pass through
Transmit the node cascade residence time in path, described ground floor network signal be multiplexed with second layer network signal
After, calculate the node cascade residence time transmitting path of described second layer network signal process, until N-1
After layer network signal multiplexing is n-th layer network signal, calculate the transmission path of described n-th layer network signal process
The node cascade residence time in footpath, and described n-th layer network signal is demultiplexing as low rate network signal,
And when being subscriber signal by described low rate network signal demapping, calculate the subscriber signal after demapping and pass through
Node residence time, by the subscriber signal after calculated whole node cascade residence times and demapping
The node residence time of process adds up, and obtains node cascade residence time accumulated value；Wherein, N is more than 1
Natural number.
In such scheme, described according to described node cascade residence time accumulated value update subscriber signal resident time
Between, including: described node cascade residence time accumulated value is added with described subscriber signal residence time,
Subscriber signal residence time after renewal.
In such scheme, described method also includes: by the transmission path of described M-1 layer network signal process
Node cascade residence time store the second memory block to described M shell network signal, by described M
The node cascade residence time transmitting path of layer network signal process stores to described M shell network signal
The first memory block；Wherein, 2≤M≤N.
The embodiment of the present invention also provides for a kind of network architecture carrying information, the described network architecture, including: letter
Number receiving node, signal processing node and signal sending node；Wherein,
Described signal receiving node, for receiving the signal carrying subscriber signal residence time；
Described signal processing node, for calculating described signal node cascade residence time during transmitting
Accumulated value, updates subscriber signal residence time according to described node cascade residence time accumulated value；
Described signal sending node, for sending the signal of the subscriber signal residence time after carrying renewal.
In such scheme, described signal receiving node, specifically for carrying the one of subscriber signal residence time
Individual or multiple subscriber signals carry out framing processing, map or are multiplexed with ground floor OTN signal.
In such scheme, described signal processing node, specifically for signal node, subscriber signal is mapped as
During one layer network signal, calculate the residence time of each node of described ground floor network signal process, by described
The residence time of each node adds up, and obtains node cascade residence time accumulated value；Or, signal node is by user
When signal multiplexing is ground floor network signal, calculate the joint transmitting path of described ground floor network signal process
After some cascade residence time, described ground floor network signal are multiplexed with second layer network signal, calculate described the
The node cascade residence time transmitting path of double layer network signal process, until N-1 layer network signal is multiple
After for n-th layer network signal, calculate the node cascade transmitting path of described n-th layer network signal process
Residence time, and described n-th layer network signal is demultiplexing as low rate network signal and by described low
When speed internet signal demapping is subscriber signal, the node calculating the subscriber signal process after demapping is resident
Time, by the node of the subscriber signal process after calculated whole node cascade residence times and demapping
Residence time adds up, and obtains node cascade residence time accumulated value；Wherein, N is the natural number more than 1.
In such scheme, described signal processing node, specifically for accumulating described node cascade residence time
Value is added with described subscriber signal residence time, the subscriber signal residence time after being updated.
In such scheme, described information processing node, it is additionally operable to described M-1 layer network signal process
The node cascade residence time transmitting path stores the second memory block to described M shell network signal, by institute
The node cascade residence time transmitting path stating M shell network signal process stores to described M shell net
One memory block of network signal；Wherein, 2≤M≤N.
The method of the carrying information that the embodiment of the present invention is provided and the network architecture, including: receive and carry user
The signal of signal residence time；Calculate described signal node cascade residence time accumulated value during transmitting；
Subscriber signal residence time is updated according to described node cascade residence time accumulated value；Send after carrying renewal
The signal of subscriber signal residence time；Wherein, the signal of reception can be multiple signals that multiple user sends.
So, by signal calculated node cascade residence time accumulated value during transmitting, and according to described joint
Point cascade residence time accumulated value updates the residence time in user time synchronizing information, it is achieved that subscriber signal
Time synchronized during transmitting；When described signal is multiple, independent achieves each access user
The time synchronized of signal.
Accompanying drawing explanation
Fig. 1 is the basic handling schematic flow sheet of the method for embodiment of the present invention carrying information；
Fig. 2 is the detailed process schematic diagram that the embodiment of the present invention one carries the method for information；
Fig. 3 is the detailed process schematic diagram that the embodiment of the present invention two carries the method for information；
Fig. 4 is the composition structural representation of the network architecture of embodiment of the present invention carrying information；
Fig. 5 is the composition structural representation that the embodiment of the present invention one carries the network architecture of information；
Fig. 6 is the composition structural representation that the embodiment of the present invention two carries the network architecture of information.
Detailed description of the invention
In the embodiment of the present invention, a kind of method carrying information, including: receive carry subscriber signal resident time
Between signal；Calculate described signal node cascade residence time accumulated value during transmitting；According to described
Node cascade residence time accumulated value updates subscriber signal residence time；Send the subscriber signal after carrying renewal
The signal of residence time.
Here, by ONT carrying source clock and the time synchronization information between clock, OTN is i.e. passed through
Realize described source clock to be connected end to end from clock with described；Described source clock and described can refer to from clock
The node device hung under OTN or network；Multiple sources clock with can be belonging respectively to solely from synchronizing clock time group
Vertical user network, belongs to different time synchronization domains.
The basic handling flow process of the method for the carrying information that the embodiment of the present invention is provided, as it is shown in figure 1, bag
Include following steps:
Step 101, receives the signal carrying subscriber signal residence time；
Specifically, the signal receiving node in OTN receives the source clock of user layer network or from clock transmission
Carry the signal of subscriber signal residence time, the signal carrying subscriber signal residence time carried out framing processing,
Multiplexing or be mapped as ground floor network signal, calculates described subscriber signal staying through described signal receiving node
Stay the time, by described residence time record described ground floor network signal the first memory block；
Wherein, described network signal is OTN signal, and described subscriber signal residence time refers to that described signal exists
Enter the time delay produced before OTN；Accordingly, described ground floor network signal refers to ground floor OTN
Signal；
Here, described information also includes that synchronizing information data cell, described synchronizing information data cell refer to bag
Data structure containing time synchronization information；
In the embodiment of the present invention, utilize Payload Unit carrying synchronizing information data cell and the subscriber signal of OTN
Residence time；Business datum in described synchronizing information data cell Yu user sent along to OTN time, directly
Connect the Payload Unit that described synchronizing information data cell is loaded OTN；Exist in described synchronizing information data cell
Signal is not sent along with the business datum of user during sending, but when having independent Transfer pipe, then
In described Transfer pipe, extract synchronizing information data cell and subscriber signal residence time, synchronize letter by described
The business datum of breath data cell, subscriber signal residence time and user is together loaded into the payload list of OTN
Unit；
It should be noted that in the embodiment of the present invention, described synchronizing information data cell and subscriber signal are resident
Time can be loaded into the Payload Unit of OTN with any one data encapsulating structure, can be various encapsulation
Frame structure, pack arrangement or the form such as byte group without encapsulation；As: can be 1588 exact time synchronization
Ethernet pack arrangement that agreement specifies, IPV4 pack arrangement, IPV6 pack arrangement, through the data knot of GFP encapsulating
Structure etc..
Step 102, calculates described signal node cascade residence time accumulated value during transmitting；
Specifically, during signal processing node all signal relay forward node in OTN, first signal
Relay forwarding node calculates resident through first signal relay forward node of described ground floor OTN signal
Time, in extraction step 101, calculated subscriber signal is through the residence time of described signal receiving node
And by the residence time and the described ground floor OTN signal that extract through first signal relay forward node
The first memory block to OTN signal is stored after residence time is cumulative；Ground floor OTN signal is through second
During signal relay forward node, it is resident that second signal relay forward node extracts in described first memory block
Time, and calculate the described ground floor OTN signal residence time through second signal relay forward node,
The residence time of described extraction is added with the residence time through second signal relay forward node, storage
To the first memory block；The like, until last the signal relay forward node in OTN extracts described
Residence time in first memory block, and calculate described ground floor network signal through last signal relay
The residence time of forward node, the residence time and calculated described first that will extract in the first memory block
Layer network signal is added through the residence time of last signal relay forward node；
When signal processing node in OTN also includes all signal gathering nodes, at the signal in OTN
Reason node calculates the node cascade residence time transmitting path of described ground floor network signal process, and by institute
State node cascade residence time record in first memory block of OTN；By described ground floor OTN signal to
When two layers of OTN signal multiplexing converge, will answer to the OTN signal of higher rate by ground floor OTN signal
With when converging, the node cascade in the first memory block of signal processing Node extraction ground floor OTN signal is resident
Time, the described node cascade residence time extracted is stored the second memory block to second layer OTN signal；
The like, the node cascade in the path of the corresponding level OTN signal process of every layer of OTN signal record is stayed
Time, extract the node cascade residence time transmitting path of the OTN signal process of each stage speed.
Here, described first memory block is OTN signal overhead, and described second memory block is clean in OTN
Lotus unit, last signal processing node described can be signal gathering node, it is also possible to be signal relay
Forward node；Signal processing node in described OTN is calculating node cascade residence time or is updating node level
Even during residence time, can carry out deviation compensation according to practical situation, concrete deviation compensation amount can use existing
The various network delay deviation metering systems having obtain.
It should be noted that the node cascade residence time accumulated value described in the embodiment of the present invention can be with arbitrarily
A kind of data structure form is deposited to OTN signal overhead, it is not limited to a certain structure, it is also possible to for for
Bit, byte group or the various frame structures of band encapsulation or pack arrangement etc. without encapsulation；And the present invention is real
Execute the position in OTN signal overhead of the node cascade residence time accumulated value described in example to be not particularly limited,
It can be the untapped optional position retained in existing OTN signal overhead；Can be by certain of OTN frame
A little expense positions are constituted, it is also possible to be made up of some expense position of multiple multi-frames, can have been carried by a frame
Whole node cascade residence time accumulated value, it is also possible to jointly carried complete node level by multiple continuous print frames
Even residence time accumulated value.
Step 103, updates subscriber signal residence time according to described node cascade residence time accumulated value；
Specifically, described n-th layer network signal is demultiplexing as low rate net by the signal sending node in OTN
Network signal be subscriber signal by described low rate network signal demapping, calculates the user's letter after demapping
The node residence time of number process, extracts the node cascade residence time accumulated value in OTN signal, i.e. each
Subscriber signal is through the residence time of whole OTN network, by calculated for step 102 whole node cascades
The node residence time of the subscriber signal process after residence time and demapping adds up, and obtains node cascade resident
Accumulated time value, described node cascade residence time accumulated value is added with described subscriber signal residence time,
Subscriber signal residence time accumulated value after renewal；
Wherein, the node cascade residence time accumulated value extracted in OTN signal includes: the signal in OTN
Two-forty OTN signal is demultiplexing as low rate OTN signal by sending node, then low rate OTN is believed
Number demapping, isolate subscriber signal, extract the node cascade residence time accumulated value in OTN signal；Or
The ground floor direct demapping of OTN signal is gone out subscriber signal by the signal sending node in OTN, extracts OTN
Node cascade residence time accumulated value in signal.
Step 104, sends the signal of the subscriber signal residence time after carrying renewal；
Specifically, the signal sending node in OTN sends the letter of the subscriber signal residence time after carrying renewal
Number to user layer network from clock or source clock；The signal received at described signal receiving node is by user
When the source clock of layer network sends, the signal of the subscriber signal residence time after carrying renewal sends to user
Layer network from clock；The signal received at described signal receiving node is sending out from clock by user layer network
When sending, the signal of the subscriber signal residence time after carrying renewal sends the source clock to user layer network；
It should be noted that the subscriber signal carrying synchronizing information data cell in user layer network and user's letter
The mode of number residence time is not limited to a certain kind, according to current communication network technology, different network classes
Type and signal type may use different bearer mode；Described user layer network can be Ethernet or packet biography
Send the various networks such as net (Packet Transport Network, PTN), it is also possible to be another OTN；
, the computational methods at subscriber signal residence time in user network are not limited meanwhile, according to
Family network type is different, it is possible to use the method for synchronizing time in single network at present；In the embodiment of the present invention
Described signal receiving node and signal gathering node when performing above-mentioned functions, can by subscriber signal access node,
Subscriber signal aggregation node or subscriber signal forward node realize.
Embodiment of the method one
The embodiment of the present invention one carries the detailed process of the method for information, as in figure 2 it is shown, include following
Step:
Step 201, receives the signal that the source clock of user layer network sends；
Specifically, the first user signal forward node in OTN receives the source clock transmission of user layer network
Signal, carries out framing processing by described signal, is mapped as OTN signal；
Wherein, described signal carries subscriber signal residence time and synchronizing information data cell；
Here, described subscriber signal residence time refers to that the time that described signal produced before entering OTN prolongs
Late, described synchronizing information data cell refers to include the data structure of time synchronization information；Described first uses
After family signal forward node receives described signal, utilize the Payload Unit carrying synchronizing information data sheet of OTN
Unit and subscriber signal residence time；
It should be noted that in the embodiment of the present invention, described synchronizing information data cell and subscriber signal are resident
Time can be loaded into the Payload Unit of OTN with any one data encapsulating structure, can be various encapsulation
Frame structure, pack arrangement or the form such as byte group without encapsulation；As: can be 1588 exact time synchronization
Ethernet pack arrangement that agreement specifies, IPV4 pack arrangement, IPV6 pack arrangement, through the data knot of GFP encapsulating
Structure etc..
Step 202, first user signal forward node calculates the described OTN signal residence time through self,
And send OTN signal；
Specifically, described first user signal forward node calculates described OTN signal through described first user
The residence time of signal forward node, by described residence time record in OTN signal overhead, and by described
OTN signal sends to the first signal relay forward node.
Step 203, each signal relay forward node calculates OTN signal residence time, and sends OTN
Signal；
Specifically, the first signal relay forward node receives described OTN signal, calculates described OTN signal
At the residence time of described first signal relay forward node, by staying of the first signal relay forward node record
Stay the time to be added with the residence time of signal receiving node record, obtain the accumulation of primary nodal point cascade residence time
Value, by primary nodal point cascade residence time accumulated value record in OTN signal overhead, and by described OTN
Signal sends to secondary signal relay forwarding node；
Described secondary signal relay forwarding node receives described OTN signal, calculates described OTN signal in institute
State the residence time of secondary signal relay forwarding node, during by secondary signal relay forwarding nodes records resident
Between be added with the primary nodal point cascade residence time accumulated value in described OTN signal overhead, obtain secondary nodal point
Cascade residence time accumulated value；By secondary nodal point cascade residence time accumulated value record in OTN signal overhead
In, and described OTN signal is sent to the 3rd signal relay forward node；
Described 3rd signal relay forward node receives described OTN signal, calculates described OTN signal in institute
State the residence time of the 3rd signal relay forward node, during by the 3rd signal relay forward node record resident
Between be added with the secondary nodal point cascade residence time accumulated value in described OTN signal overhead, obtain the 3rd node
Cascade residence time accumulated value；By the 3rd node cascade residence time accumulated value record in OTN signal overhead
In, and described OTN signal is sent to the second subscriber signal forward node.
Step 204, the second subscriber signal forward node by described OTN signal send to user layer network from
Clock；
Specifically, described second subscriber signal forward node calculates the time delay at self of the described OTN signal, will
The described direct demapping of OTN signal goes out subscriber signal, extracts the node cascade residence time in OTN signal
Accumulated value, by the 3rd node cascade residence time accumulated value in OTN signal overhead, described OTN signal
Time delay at the second subscriber signal forward node is added with described subscriber signal residence time, obtains subscriber signal
Whole path residence time, described second subscriber signal forward node will carry whole path residence time
OTN signal send to user layer network from clock.
Embodiment of the method two
The embodiment of the present invention two carries the detailed process of the method for information, as it is shown on figure 3, include following
Step:
Step 301, receives the signal that user layer network sends；
Specifically, the source clock of the reception of the first user signal gathering node in OTN first user layer network is sent out
The first user signal sent, carries out framing processing by described first user signal, is mapped as first user signal
Corresponding ground floor OTN signal；First user signal gathering node in OTN receives the second client layer net
Second subscriber signal sent from clock of network, carries out framing processing by described second subscriber signal, is mapped as
The ground floor OTN signal that second subscriber signal is corresponding；First user signal gathering node calculates each subscriber signal
Through the time delay of this node, first user signal is stored to first user signal pair through the time delay of this node
The ground floor OTN signal overhead answered, stores the second subscriber signal to the second user through the time delay of this node
The ground floor OTN signal overhead that signal is corresponding；Described first user signal gathering node is by described first user
The ground floor OTN signal gathering that ground floor OTN signal that signal is corresponding is corresponding with described second subscriber signal
For second layer OTN signal, and calculate the node cascade transmitting path of described second layer OTN signal process
Residence time, described second layer OTN signal process transmit path node cascade residence time all store to
Second layer OTN signal overhead, the value in described ground floor OTN signal overhead and Payload Unit stores to institute
State the Payload Unit of second layer OTN signal；
Wherein, described first user signal carries first user signal residence time and the first synchronizing information data
Unit, described second subscriber signal carries the second subscriber signal residence time and the second synchronizing information data cell.
It should be noted that in the embodiment of the present invention, described synchronizing information data cell and subscriber signal are resident
Time can be loaded into the Payload Unit of OTN with any one data encapsulating structure, can be various encapsulation
Frame structure, pack arrangement or the form such as byte group without encapsulation；As: can be 1588 exact time synchronization
Ethernet pack arrangement that agreement specifies, IPV4 pack arrangement, IPV6 pack arrangement, through the data knot of GFP encapsulating
Structure etc..
Step 302, the first signal relay forward node calculates described second layer OTN signal staying through self
Stay the time, and send described second layer OTN signal；
Specifically, described first signal relay forward node calculates described second layer OTN signal through described the
The residence time of one signal relay forward node, by described residence time record at described second layer OTN signal
In expense, and send described second layer OTN signal.
Step 303, receives the signal that user layer network sends；
Specifically, the source clock of the second subscriber signal aggregation node reception the 3rd user layer network in OTN is sent out
The first user signal sent, carries out framing processing by described first user signal, is mapped as the 3rd subscriber signal
Corresponding ground floor OTN signal；The second subscriber signal aggregation node in OTN receives fourth user layer net
The fourth user signal sent from clock of network, carries out framing processing by described fourth user signal, is mapped as
The ground floor OTN signal that fourth user signal is corresponding；Second subscriber signal aggregation node calculates each subscriber signal
Through the time delay of this node, the 3rd subscriber signal is stored to the 3rd subscriber signal pair through the time delay of this node
The ground floor OTN signal overhead answered, stores fourth user signal to fourth user through the time delay of this node
The ground floor OTN signal overhead that signal is corresponding；Described second subscriber signal aggregation node is by described 3rd user
The ground floor OTN signal gathering that ground floor OTN signal that signal is corresponding is corresponding with described fourth user signal
For second layer OTN signal, and calculate the node cascade transmitting path of described second layer OTN signal process
Residence time, described second layer OTN signal process transmit path node cascade residence time all store to
Second layer OTN signal overhead；Value in described ground floor OTN signal overhead and Payload Unit stores to institute
State the Payload Unit of second layer OTN signal；
Wherein, described first user signal carries the 3rd subscriber signal residence time and the 3rd synchronizing information data
Unit, described fourth user signal carries fourth user signal residence time and the 4th synchronizing information data cell.
It should be noted that in the embodiment of the present invention, described synchronizing information data cell and subscriber signal are resident
Time can be loaded into the Payload Unit of OTN with any one data encapsulating structure, can be various encapsulation
Frame structure, pack arrangement or the form such as byte group without encapsulation；As: can be 1588 exact time synchronization
Ethernet pack arrangement that agreement specifies, IPV4 pack arrangement, IPV6 pack arrangement, through the data knot of GFP encapsulating
Structure etc..
Step 304, described first user signal and the second subscriber signal are pooled by OTN signal gathering node
Second layer OTN signal, the second layer OTN become with fourth user signal gathering with described 3rd subscriber signal
Signal gathering is third layer OTN signal；
Specifically, the payload of second layer OTN signal first user signal and the second subscriber signal pooled
Unit and expense, and the second layer OTN signal that becomes with fourth user signal gathering of described 3rd subscriber signal
Payload Unit and expense store the Payload Unit to third layer OTN signal, described third layer OTN signal
Expense transmits the node cascade residence time of process for storing described third layer OTN signal, and through described joint
Point cascade residence time stores to third layer OTN signal overhead.
Step 305, secondary signal relay forwarding node receives described third layer OTN signal, calculates described the
Three layers of OTN signal pass through the node residence time of self, and send described third layer OTN signal；
Specifically, calculated third layer OTN signal is believed by secondary signal relay forwarding node through second
The node residence time of number relay forwarding node stores the expense to third layer OTN signal.
Step 306, the second subscriber signal aggregation node receives third layer OTN signal, by described third layer
OTN signal demultiplexing, demapping are transmission after subscriber signal；
Specifically, the second subscriber signal aggregation node receives the third layer OTN signal of described two-forty, by institute
State third layer OTN signal and be demultiplexing as the network signal of low rate, and by the network signal solution of described low rate
It is mapped as first user signal, the second subscriber signal, the 3rd subscriber signal and the fourth user signal of correspondence,
Calculate first user signal, the second subscriber signal, the 3rd subscriber signal and the fourth user signal after demapping
Through the residence time of the second subscriber signal aggregation node, extract described third layer OTN signal overhead and payload
Whole nodes of one subscriber signal are cascaded residence time and this use by the node cascade residence time of interior storage
Family signal is added through the residence time of the second subscriber signal aggregation node, obtains this user through whole network
Node cascade residence time accumulated value, by this user through whole network node cascade residence time accumulate
Value is added with subscriber signal residence time described in this user, and this subscriber signal residence time after being updated tires out
Product value；The letter of the first user signal residence time accumulated value after carrying the first synchronizing information data and update
Number send the second use from clock, after the second synchronizing information data being carried and updating to first user signal
The signal of family signal residence time accumulated value sends the source clock to the second subscriber signal, will carry the 3rd synchronization
The signal of the 3rd subscriber signal residence time accumulated value after information data and renewal sends to the 3rd subscriber signal
The fourth user signal residence time accumulated value from clock, after the 4th synchronizing information data being carried and updating
Signal send to the source clock of fourth user signal.
In the above embodiment of the present invention, first, OTN is as independent transparent clock cascade system, each road
Subscriber signal is each at the residence time of respective user network and the upper circuit node at OTN edge and lower circuit node
Differ, through identical transmission path in OTN network after entrance OTN, transmit staying of whole path
Stay the time the most identical；Secondly, OTN signal Payload Unit is utilized to carry the synchronizing information number of each subscriber signal
According to unit and subscriber signal residence time, utilize OTN signal overhead carrying OTN signal node cascade resident
Time accumulated value；When OTN includes OTN signal gathering node, the OTN signal of different levels is opened
What pin carried is the node cascade residence time in the stretch footpath of this layer of OTN signal process, has layering sublevel
Section characteristic；OTN includes various types of nodes such as OTN signal gathering node and OTN signal forward node,
It is easy to OTN signal Shang Luhuoxia road the most at any time, enhances the motility of OTN networking；Again,
When OTN carries subscriber signal, except the node of reception subscriber signal, i.e. go up circuit node and send subscriber signal
Node, i.e. descend outside circuit node, OTN transmit signal time, it is not necessary to dissection process user's synchronizing information number
According to unit, only need to calculate OTN signal node cascade residence time in OTN, process simple, and
Simplify OTN node device and support the realization of time synchronized function, reduce network cost；Finally, OTN
As independent transparent clock concatenation system, each node in OTN calculate OTN signal at each joint
The residence time of point, it is only necessary to carry out clock rate synchronization inside OTN, without node and access
User layer network time synchronized, therefore, the different user layer network belonging to different time territory can be independent
Ground carries via OTN, it is achieved non-interfering time synchronized.
For the method realizing carrying information, the embodiment of the present invention provides a kind of network architecture carrying information, institute
State the composition structure of the network architecture, as shown in Figure 4, including: signal receiving node 10, signal processing node
11 and signal sending node 12；Wherein,
Described signal receiving node 10, for receiving the signal carrying subscriber signal residence time；
Described signal processing node 11, for calculate described signal transmit during node cascade resident time
Between accumulated value, according to described node cascade residence time accumulated value update subscriber signal residence time；
Described signal sending node 12, for sending the signal of the subscriber signal residence time after carrying renewal.
In the embodiment of the present invention, described signal receiving node 10, specifically for will carry subscriber signal resident time
Between one or more subscriber signals carry out framing processing, map or be multiplexed with ground floor OTN signal.
In the embodiment of the present invention, described signal processing node 11, reflects subscriber signal specifically for signal node
When penetrating as ground floor network signal, calculate the residence time of each node of described ground floor network signal process,
The residence time of described each node is added up, obtains node cascade residence time accumulated value；Or,
When subscriber signal is multiplexed with ground floor network signal by signal node, calculate described ground floor network signal
The transmission node cascade residence time in path of process, described ground floor network signal are multiplexed with second layer network
After signal, calculate the node cascade residence time transmitting path of described second layer network signal process, until
After N-1 layer network signal multiplexing is n-th layer network signal, calculate described n-th layer network signal process
Transmit the node cascade residence time in path, and described n-th layer network signal is demultiplexing as low rate net
Network signal when being subscriber signal by described low rate network signal demapping, calculates the user after demapping
The node residence time of signal process, after calculated whole node cascade residence times and demapping
The node residence time of subscriber signal process adds up, and obtains node cascade residence time accumulated value；Wherein, N
For the natural number more than 1.
In the embodiment of the present invention, described signal processing node 11, specifically for by time resident for described node cascade
Between accumulated value be added with described subscriber signal residence time, the subscriber signal residence time after being updated.
In the embodiment of the present invention, described signal processing node 11, it is additionally operable to described M-1 layer network signal
The node cascade residence time transmitting path of process stores the second storage to described M shell network signal
District, stores the node cascade residence time transmitting path of described M shell network signal process to described the
First memory block of M shell network signal；Wherein, 2≤M≤N.
In the embodiment of the present invention, the merit that described signal receiving node 10 and described signal sending node 12 realize
Can be performed by subscriber signal aggregation node or subscriber signal forward node respectively.
Here, described first memory block is OTN signal overhead, and described second memory block is clean in OTN
Lotus unit, last signal processing node described can be signal gathering node, it is also possible to be signal relay
Forward node；Signal processing node in described OTN is calculating node cascade residence time or is updating node level
Even during residence time, can carry out deviation compensation according to practical situation, concrete deviation compensation amount can use existing
The various network delay deviation metering systems having obtain.
It should be noted that the node cascade residence time accumulated value described in the embodiment of the present invention can be with arbitrarily
A kind of data structure form is deposited to OTN signal overhead, it is not limited to a certain structure, it is also possible to for for
Bit, byte group or the various frame structures of band encapsulation or pack arrangement etc. without encapsulation；And the present invention is real
Execute the position in OTN signal is unpacked of the node cascade residence time accumulated value described in example to be not particularly limited,
It can be the untapped optional position retained in existing OTN signal overhead；Can be by certain of OTN frame
A little expense positions are constituted, it is also possible to be made up of some expense position of multiple multi-frames, can have been carried by a frame
Whole node cascade residence time accumulated value, it is also possible to jointly carried complete node level by multiple continuous print frames
Even residence time accumulated value.
In the embodiment of the present invention, the node cascade residence time accumulated value extracted in OTN signal includes: OTN
Two-forty OTN signal is demultiplexing as low rate OTN signal by interior signal sending node, then by low rate
OTN signal demapping, isolate subscriber signal, extract the node cascade residence time in OTN signal and tire out
Product value；Or the ground floor direct demapping of OTN signal is gone out subscriber signal by the signal sending node in OTN,
Extract the node cascade residence time accumulated value in OTN signal.
Device embodiment one
The composition structural representation of the network architecture of the carrying information that apparatus of the present invention embodiment one is provided, as
Shown in Fig. 5, including: first user signal forward node the 20, first signal relay forward node 21, second
Signal relay forward node the 22, the 3rd signal relay forward node 23 and the second subscriber signal forward node 24；
Wherein,
Described first user forward node 20, for receiving the signal that the source clock of user layer network sends, will
Described signal carries out framing processing, is mapped as OTN signal；Calculate described OTN signal through described first
The residence time of subscriber signal forward node, by described residence time record in OTN signal overhead, and will
Described OTN signal sends to the first signal relay forward node 21；
Wherein, described signal carries subscriber signal residence time and synchronizing information data cell；
Here, described subscriber signal residence time refers to that the time that described signal produced before entering OTN prolongs
Late, described synchronizing information data cell refers to include the data structure of time synchronization information；Described first uses
After family signal forward node receives described signal, utilize the Payload Unit carrying synchronizing information data sheet of OTN
Unit and subscriber signal residence time；
It should be noted that in the embodiment of the present invention, described synchronizing information data cell and subscriber signal are resident
Time can be loaded into the Payload Unit of OTN with any one data encapsulating structure, can be various encapsulation
Frame structure, pack arrangement or the form such as byte group without encapsulation；As: can be 1588 exact time synchronization
Ethernet pack arrangement that agreement specifies, IPV4 pack arrangement, IPV6 pack arrangement, through the data knot of GFP encapsulating
Structure etc..
Described first signal relay forward node 21, is used for receiving described OTN signal, calculates described OTN
Signal is at the residence time of described first signal relay forward node, by the first signal relay forward node record
Residence time be added with the residence time of signal receiving node record, obtain primary nodal point cascade residence time
Accumulated value, by primary nodal point cascade residence time accumulated value record in OTN signal overhead, and by described
OTN signal sends to secondary signal relay forwarding node.
Described first signal relay forward node 22, is used for receiving described OTN signal, calculates described OTN
Signal is at the residence time of described secondary signal relay forwarding node, by secondary signal relay forwarding nodes records
Residence time be added with the primary nodal point cascade residence time accumulated value in described OTN signal overhead, obtain
Secondary nodal point cascade residence time accumulated value；Secondary nodal point cascade residence time accumulated value record is believed at OTN
In number expense, and described OTN signal is sent to the 3rd signal relay forward node.
Described 3rd signal relay forward node 23, is used for receiving described OTN signal, calculates described OTN
Signal is at the residence time of described 3rd signal relay forward node, by the 3rd signal relay forward node record
Residence time be added with the secondary nodal point cascade residence time accumulated value in described OTN signal overhead, obtain
3rd node cascade residence time accumulated value；3rd node cascade residence time accumulated value record is believed at OTN
In number expense, and described OTN signal is sent to the second subscriber signal forward node 24.
Described second subscriber signal forward node 24, for sending described OTN signal to user layer network
From clock；
Specifically, described second subscriber signal forward node 24 calculates the time delay at self of the described OTN signal,
The described direct demapping of OTN signal is gone out subscriber signal, extract the node cascade in OTN signal resident time
Between accumulated value, by the 3rd node cascade residence time accumulated value in OTN signal overhead, described OTN letter
Number it is added with described subscriber signal residence time in the time delay of the second subscriber signal forward node, obtains user's letter
Number whole path residence time, described second subscriber signal forward node will carry whole path residence time
OTN signal send to user layer network from clock.
Device embodiment two
The composition structural representation of the network architecture of the carrying information that apparatus of the present invention embodiment two is provided, as
Shown in Fig. 6, including: first user signal gathering node the 31, first signal relay forward node 32, second
Subscriber signal aggregation node 33, OTN signal gathering node 34, secondary signal relay forwarding node 35 and
Second subscriber signal aggregation node 36；Wherein,
Described first user signal gathering node 31, for receiving the signal that user layer network sends；
Specifically, described first user signal gathering node 31, specifically for receiving first user layer network
The first user signal that source clock sends, carries out framing processing by described first user signal, is mapped as first
The ground floor OTN signal that subscriber signal is corresponding；First user signal gathering node in OTN receives second
Second subscriber signal sent from clock of user layer network, carries out framing processing by described second subscriber signal,
It is mapped as the ground floor OTN signal that the second subscriber signal is corresponding；Calculate each subscriber signal prolonging through this node
Time, first user signal is stored to ground floor OTN corresponding to first user signal through the time delay of this node
Signal overhead, by the second subscriber signal through the time delay of this node store to the second subscriber signal corresponding first
Layer OTN signal overhead；Ground floor OTN signal corresponding for described first user signal is used with described second
The ground floor OTN signal gathering that family signal is corresponding is second layer OTN signal, and calculates the described second layer
The node cascade residence time transmitting path of OTN signal process, described second layer OTN signal process
The node cascade residence time transmitting path all stores to second layer OTN signal overhead, described ground floor OTN
Value in signal overhead and Payload Unit stores the Payload Unit to described second layer OTN signal；
Wherein, described first user signal carries first user signal residence time and the first synchronizing information data
Unit, described second user's signal carries the second subscriber signal residence time and the second synchronizing information data sheet
Unit.
Described first signal relay forward node 32, is used for calculating described second layer OTN signal through self
Residence time, by described residence time record in described second layer OTN signal overhead, and send described
Second layer OTN signal.
Second subscriber signal aggregation node 33, for receiving the signal that user layer network sends；
Specifically, the first user signal that the source clock of the 3rd user layer network sends is received, by described first
Subscriber signal carries out framing processing, is mapped as the ground floor OTN signal that the 3rd subscriber signal is corresponding；OTN
The second interior subscriber signal aggregation node receives the fourth user letter sent from clock of fourth user layer network
Number, described fourth user signal is carried out framing processing, is mapped as the ground floor that fourth user signal is corresponding
OTN signal；Calculate the time delay through this node of each subscriber signal, by the 3rd subscriber signal through this node
Time delay stores to ground floor OTN signal overhead corresponding to the 3rd subscriber signal, by fourth user signal through this
The time delay of node stores to ground floor OTN signal overhead corresponding to fourth user signal；By described 3rd user
The ground floor OTN signal gathering that ground floor OTN signal that signal is corresponding is corresponding with described fourth user signal
For second layer OTN signal, and calculate the node cascade transmitting path of described second layer OTN signal process
Residence time, described second layer OTN signal process transmit path node cascade residence time all store to
Second layer OTN signal overhead, the value in described ground floor OTN signal overhead and Payload Unit stores to institute
State the Payload Unit of second layer OTN signal；
Wherein, described first user signal carries the 3rd subscriber signal residence time and the 3rd synchronizing information data
Unit, described fourth user signal carries fourth user signal residence time and the 4th synchronizing information data cell.
OTN signal gathering node 34, for pool described first user signal and the second subscriber signal
Second layer OTN signal, the second layer OTN become with fourth user signal gathering with described 3rd subscriber signal
Signal gathering is third layer OTN signal；
Specifically, the payload of second layer OTN signal first user signal and the second subscriber signal pooled
Unit and expense, and the second layer OTN signal that becomes with fourth user signal gathering of described 3rd subscriber signal
Payload Unit and expense store the Payload Unit to third layer OTN signal, described third layer OTN signal
Expense transmits the node cascade residence time of process for storing described third layer OTN signal, and by described joint
Point cascade residence time stores to third layer OTN signal overhead.
Described secondary signal relay forwarding node 35, is used for receiving described third layer OTN signal, calculates institute
State the third layer OTN signal node residence time through self, and send described third layer OTN signal；
Specifically, secondary signal relay forwarding node 35 by calculated third layer OTN signal through
The node residence time of binary signal relay forwarding node stores the expense to third layer OTN signal.
Second subscriber signal aggregation node 36, is used for receiving third layer OTN signal, by described third layer OTN
Signal demapping is transmission after subscriber signal；
Specifically, the second subscriber signal aggregation node 36 receives the third layer OTN signal of described two-forty,
Described third layer OTN signal is demultiplexing as the network signal of low rate, and the network of described low rate is believed
Number demapping is corresponding first user signal, the second subscriber signal, the 3rd subscriber signal and fourth user letter
Number, calculate the first user signal after demapping, the second subscriber signal, the 3rd subscriber signal and fourth user
Signal through the residence time of the second subscriber signal aggregation node, extract described third layer OTN signal overhead and
The node cascade residence time of storage in payload, whole nodes of a subscriber signal are cascaded residence time with
This subscriber signal is added through the residence time of the second subscriber signal aggregation node, obtains this user through whole
The node cascade residence time accumulated value of network, by this user through the node cascade residence time of whole network
Accumulated value is added with subscriber signal residence time described in this user, when this subscriber signal after being updated is resident
Between accumulated value；First user signal residence time accumulated value after carrying the first synchronizing information data and update
Signal send to first user signal from clock, the after the second synchronizing information data being carried and updating
The signal of two subscriber signal residence time accumulated values sends the source clock to the second subscriber signal, will carry the 3rd
The signal of the 3rd subscriber signal residence time accumulated value after synchronizing information data and renewal sends to the 3rd user
Signal from clock, the fourth user signal residence time after carrying the 4th synchronizing information data and updating tires out
The signal of product value sends the source clock to fourth user signal.
The network architecture described in the above embodiment of the present invention, simplifies the networking that OTN network implementation time synchronizes
Mode, reduces the processing cost of OTN node time synchronizing information, supports that the most multiple user networks are independent
Ground carries out non-interfering time synchronized via OTN, as distinguished different carrier networks.
It should be noted that in actual applications, described signal receiving node 10, signal processing node 11,
Signal sending node 12, first user signal forward node the 20, first signal relay forward node 21,
Binary signal relay forwarding node the 22, the 3rd signal relay forward node the 23, second subscriber signal forward node
24, first user signal gathering node the 31, first signal relay forward node the 32, second subscriber signal converges
Node 33, OTN signal gathering node 34, secondary signal relay forwarding node 35 and the second subscriber signal converge
The function of poly-node 36 can by the central processing unit (CPU) in OTN or microprocessor (MPU) or
Digital signal processor (DSP) or programmable gate array (FPGA) realize.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit protection scope of the present invention.
Claims (10)
1. the method carrying information, it is characterised in that described method includes:
Receive the signal carrying subscriber signal residence time；
Calculate described signal node cascade residence time accumulated value during transmitting；
Subscriber signal residence time is updated according to described node cascade residence time accumulated value；
Send the signal of the subscriber signal residence time after carrying renewal.
Method the most according to claim 1, it is characterised in that it is resident that subscriber signal is carried in described reception
The signal of time, including:
The one or more subscriber signals carrying subscriber signal residence time are carried out framing processing, maps or multiple
With for one or more ground floor network signals.
Method the most according to claim 2, it is characterised in that the described signal of described calculating was transmitting
Node cascade residence time accumulated value in journey, including:
When subscriber signal is mapped as ground floor network signal, calculate each of described ground floor network signal process
The residence time of node, adds up the residence time of described each node, obtains the accumulation of node cascade residence time
Value；Or,
When subscriber signal is multiplexed with ground floor network signal, calculate the biography of described ground floor network signal process
After sending the node cascade residence time in path, described ground floor network signal to be multiplexed with second layer network signal,
Calculate the node cascade residence time transmitting path of described second layer network signal process, until N-1 layer
After network signal is multiplexed with n-th layer network signal, calculate the transmission path of described n-th layer network signal process
Node cascade residence time, and described n-th layer network signal is demultiplexing as low rate network signal,
And when being subscriber signal by described low rate network signal demapping, calculate the subscriber signal after demapping and pass through
Node residence time, by the subscriber signal after calculated whole node cascade residence times and demapping
The node residence time of process adds up, and obtains node cascade residence time accumulated value；Wherein, N is more than 1
Natural number.
Method the most according to claim 1, it is characterised in that described resident according to described node cascade
Accumulated time value updates subscriber signal residence time, including:
Described node cascade residence time accumulated value is added with described subscriber signal residence time, is updated
After subscriber signal residence time.
Method the most according to claim 3, it is characterised in that described method also includes:
The node cascade residence time transmitting path of described M-1 layer network signal process is stored to described
Second memory block of M shell network signal, by the joint transmitting path of described M shell network signal process
Point cascade residence time stores the first memory block to described M shell network signal；Wherein, 2≤M≤N.
6. the network architecture carrying information, it is characterised in that the described network architecture, including: signal connects
Receive node, signal processing node and signal sending node；Wherein,
Described signal receiving node, for receiving the signal carrying subscriber signal residence time；
Described signal processing node, for calculating described signal node cascade residence time during transmitting
Accumulated value, updates subscriber signal residence time according to described node cascade residence time accumulated value；
Described signal sending node, for sending the signal of the subscriber signal residence time after carrying renewal.
The network architecture the most according to claim 6, it is characterised in that described signal receiving node, tool
Body for the one or more subscriber signals carrying subscriber signal residence time being carried out framing processing, map or
It is multiplexed with ground floor OTN signal.
The network architecture the most according to claim 7, it is characterised in that described signal processing node, tool
Body is used for
When subscriber signal is mapped as ground floor network signal by signal node, calculate described ground floor network signal
The residence time of each node of process, adds up the residence time of described each node, obtains node cascade resident
Accumulated time value；Or,
When subscriber signal is multiplexed with ground floor network signal by signal node, calculate described ground floor network signal
The transmission node cascade residence time in path of process, described ground floor network signal are multiplexed with second layer network
After signal, calculate the node cascade residence time transmitting path of described second layer network signal process, until
After N-1 layer network signal multiplexing is n-th layer network signal, calculate described n-th layer network signal process
Transmit the node cascade residence time in path, and described n-th layer network signal is demultiplexing as low rate net
Network signal when being subscriber signal by described low rate network signal demapping, calculates the user after demapping
The node residence time of signal process, after calculated whole node cascade residence times and demapping
The node residence time of subscriber signal process adds up, and obtains node cascade residence time accumulated value；Wherein, N
For the natural number more than 1.
The network architecture the most according to claim 6, it is characterised in that described signal processing node, tool
Body, for being added with described subscriber signal residence time by described node cascade residence time accumulated value, obtains more
Subscriber signal residence time after Xin.
The network architecture the most according to claim 8, it is characterised in that described information processing node,
It is additionally operable to store to institute the node cascade residence time transmitting path of described M-1 layer network signal process
State the second memory block of M shell network signal, by the transmission path of described M shell network signal process
Node cascade residence time stores the memory block to described M shell network signal；Wherein, 2≤M≤N.
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