CN105915643B - The implementation method of the signaling extensions in cross-layer channel is established in WSON using electricity relaying - Google Patents
The implementation method of the signaling extensions in cross-layer channel is established in WSON using electricity relaying Download PDFInfo
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- CN105915643B CN105915643B CN201610413917.3A CN201610413917A CN105915643B CN 105915643 B CN105915643 B CN 105915643B CN 201610413917 A CN201610413917 A CN 201610413917A CN 105915643 B CN105915643 B CN 105915643B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a kind of implementation methods for the signaling extensions for establishing cross-layer channel in WSON using electricity relaying, include the following steps：Increase the corresponding mark established or deleted automatically for photosphere channel and information in Notify message, when receiving foundation or deleting the request in electric layer channel, Notify message is forwarded to realize the automatic foundation in photosphere channel or delete by IP between the source node in electric layer channel and the source node in photosphere channel.The present invention in Notify message by increasing the corresponding mark established or deleted automatically for photosphere channel and information, when receiving foundation or deleting the request in electric layer channel, it forwards Notify message to realize the automatic foundation or deletion in photosphere channel by IP between the source node in electric layer channel and the source node in photosphere channel, realizes the traffic scheduling in cross-layer channel.
Description
Technical field
The present invention relates to the fields of communication technology such as data and optical transmission device, and in particular to is established in WSON using electricity relaying
The implementation method of the signaling extensions in cross-layer channel.
Background technique
WSON (Wavelength Switched Optical Network, wavelength switched optical network) is multiple based on wavelength-division
With the automatically switching optical networks of (WDM, Wavelength Division Multiplexing) transmission net (ASON,
Automatically Switched Optical Network), wavelength networks are introduced by the way that plane will be controlled, using general more
Protocol label exchange agreement (GMPLS, Generalized Multiprotocol Label Switching) etc. controls plane skill
Art realizes the dynamic dispatching of Wavelength routing, realizes the intelligence of Wavelength dispatching, improves flexibility and the network of WDM network scheduling
The efficiency of management.
It is concentrated mainly in single exchange level currently based on the application of the intelligent control planar technique of GMPLS：TDM, wave
Long layer.The control technology based on single exchange level (VC4, ODUK, wavelength) of existing maturation cannot be fully met currently gradually
Multifaceted dispatching requirement in network, main cause are the growths of IP data service, and optical transfer network is gradually towards large capacity, face
Develop to the tranmission techniques of IP, and the scheduling of the teleservice towards IP will pass through multiple exchange levels or scheduling particle；Net
The development of network flattening and integrated chip technology, communication network device have powerful multi-service fusion processing capacity and very high
Integrated level, individual equipment can have the traffic handing capacity of many levels.
In order to introduce control plane technology in this multitiered network, the control plane to original based on GMPLS is needed
Technology carries out the extension in certain function and agreement, to solve the problems, such as that more granularities, more exchange levels are uniformly controlled, thus goes out
Showing MLN/MRN control plane technology, MLN/MRN control plane technology is not limited by the transport plane technology that bottom uses,
It is a kind of general controls technology for supporting more granularities, more exchange levels.
In optical transmission device, digit pulse electric signal is converted to optical signal by " electrooptical device ", is sent in optical fiber
Transmitted, in receiving end, the optical signal received be converted into digit pulse electric signal, during its transmission, when away from
From farther out when, using trunking, signal of communication is transmitted after regeneration treatment, the effect of trunking be by optical fiber it is long away from
After transmission, the light pulse signal by attenuation and dispersion distortion reverts to the digital optical signal of standard, is transmitted again, with
Achieve the purpose that extend transmission distance.Currently, more common is " electricity there are mainly two types of the regenerative relay systems of digital optical signal
Relaying " mode, the optical signal of faint deformation is first changed into electric signal by it, after amplifying shaping, becomes the digital telecommunication of standard
Number, re-modulation continues to transmit along optical fiber at optical signal.
In the case where multitiered network, occur more being across the teleservice dispatching requirement of multilayer, therefore control
Plane needs support the nested mechanism of multilayer signaling, to realize the traffic scheduling in cross-layer channel.
Summary of the invention
The technical problem to be solved by the present invention is to realize control plane support multilayer signaling nested mechanism, with realize across
The traffic scheduling in layer channel.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that providing in a kind of WSON using electricity relaying
The implementation method for establishing the signaling extensions in cross-layer channel, includes the following steps：
Increase the corresponding mark established or deleted automatically for photosphere channel and information in Notify message, is receiving
When establishing or deleting the request in electric layer channel, forwarded between the source node in electric layer channel and the source node in photosphere channel by IP
Notify message realizes the automatic foundation or deletion in photosphere channel.
In the above-mentioned technical solutions, the increased mark established automatically for photosphere channel includes asking in Notify message
It asks and establishes channel and backward channel foundation as a result, increased information includes sourcesink node IP, channel number, instance number, includes section
Point, tag request, session attribute and privately owned field.
In the above-mentioned technical solutions, the increased mark being automatically deleted for photosphere channel includes asking in Notify message
It asks and deletes channel and backward channel deletion as a result, increased information includes sourcesink node IP, channel number and instance number.
In the above-mentioned technical solutions, the automatic establishment process in photosphere channel specifically includes following steps：
It receives when establishing electric layer channel request, the source node in electric layer channel judges whether photosphere channel meets electric layer business
Demand, if it is satisfied, then creating electric layer channel and terminating；Otherwise, it sends request and establishes channel Notify message to photosphere channel
Source node；
The source node in photosphere channel receives after request establishes channel Notify message, establishes channel Notify using request
The information carried in message establishes photosphere channel；
After the completion of photosphere Path Setup, the source node in photosphere channel, which will establish result Notify message by backward channel, to be led to
The result that road is established is sent to the source node in electric layer channel, creates electric layer channel and terminates.
In the above-mentioned technical solutions, the process that is automatically deleted in photosphere channel specifically includes following steps：
When receiving deletion electric layer channel request, the source node in electric layer channel judges on photosphere channel with the presence or absence of carrying
Other electric layer business, if it is, deleting electric layer channel and terminating；Otherwise, it sends request and deletes channel Notify message to light
The source node in layer channel；
After the source node in photosphere channel receives request deletion channel Notify message, request is utilized to delete channel Notify
The information deletion photosphere channel carried in message；
After the completion of photosphere channel is deleted, the source node in photosphere channel, which will delete result Notify message by backward channel, to be led to
The result that road is deleted is sent to the source node in electric layer channel, deletes electric layer channel and terminates.
The present invention in Notify message by increasing the corresponding mark and letter establishing or delete automatically for photosphere channel
Breath, when receiving foundation or deleting the request in electric layer channel, between the source node in electric layer channel and the source node in photosphere channel
It forwards Notify message to realize the automatic foundation or deletion in photosphere channel by IP, realizes the traffic scheduling in cross-layer channel.
Detailed description of the invention
Fig. 1 is multilayer road construction schematic diagram under electrification relay case；
Fig. 2 is the automatic Establishing process figure in photosphere channel provided in an embodiment of the present invention；
Fig. 3 is automatically deleted flow chart for photosphere channel provided in an embodiment of the present invention.
Specific embodiment
In the case where multitiered network, occur more being across the teleservice dispatching requirement of multilayer, therefore control
Plane needs support the nested mechanism of multilayer signaling, and to realize the traffic scheduling control of multilayer, and the triggering of nested signaling is main
It is, when configuring client's layer service, to realize at mixed node and establish service layer path automatically on demand.It is new receiving client layer
Business establish request when, control plane need to judge whether existing service layer meets client layer business demand, mainly include
Sourcesink node, direction and bandwidth etc. can be automatically performed the path computing and industry of service layer when being unsatisfactory for client layer business demand
Business configuration.In practical situations, upper layer LSP generally uses TDM to exchange, referred to herein as " electric layer channel ", and lower layer LSP uses wavelength
Exchange, referred to herein as " photosphere channel ".
The source node in photosphere channel and the source node in electric layer channel may not be the same node, the destination node in photosphere channel
Destination node with electric layer channel may not also be the same node, due to there is an electric relaying, photosphere business need at electric relaying into
Row is talked about up and down, thus photosphere channel can be with electricity relaying for cut-point, and being divided into several sections establishes channel, i.e. photosphere channel is needed in electricity
It terminates or starts at relaying, also it is possible to which some photosphere channels have been built up, some photosphere channels are not established also, are needed
Want signaling control is automatic to establish.For established photosphere channel, does not need to repeat to establish in the case where bandwidth is enough, should make
With the remaining bandwidth in existing photosphere channel.Here for example, as shown in Figure 1, having existed light between electricity relaying and node B
Layer channel, remaining bandwidth is 40G, it is now desired to a new electric layer business is established from node A to node B, bandwidth demand is
20G, therefore it to be multiplexed this existing photosphere channel, and there is no photosphere channel between node A and electricity relaying, need to establish one
New photosphere channel.
The automatic foundation in photosphere channel is triggered, (Resource Reservation Protocol, resource are pre- using RSVP
Stay agreement) Notify message notifies, Notify message is sent to the source node in photosphere channel by the source node in electric layer channel, this
A Notify message will show it oneself is that channel is established in request, thus is needed to do Notify message and be extended, in addition to setting is built
Outside vertical request flag, this Notify message needs to carry the necessary information of road construction, including sourcesink node IP, channel number, example
Number, include node, tag request, session attribute and privately owned field.The source node in photosphere channel receives request and establishes channel
After Notify message, establish the information carried in the Notify message of channel using request, establish photosphere channel, the process of road construction with
Common path creation process is identical, after the completion of photosphere Path Setup, no matter succeeds or failure, the source node in photosphere channel need
Send the result of Path Setup to by Notify message the source node in electric layer channel, the case where to inform photosphere channel, this
The Notify message of kind notice Path Setup result is referred to as Path Setup result Notify, needs in the Notify message of standard
Setting mark, shows result notice of this Notify message for Path Setup.
When needing to delete channel, the electric layer business for having carrying on photosphere channel or not is first determined whether, if not
There are electric layer business, then delete this photosphere channel, and the process for deleting channel is similar with the process for establishing channel, by electric layer channel
Source node sends Notify message to the source node in photosphere channel, this Notify message needs that the mark for deleting channel is arranged,
Show it oneself is for requesting to delete channel, this Notify message also needs to carry the index information in deleted channel, i.e. source
Destination node IP, channel number and instance number.After the source node in photosphere channel receives the Notify message that channel is deleted in request, hair
Channel is played to delete, the process that channel is deleted is consistent with common channel deletion process, after photosphere channel deletion process, no matter
The source node of success or failure, photosphere channel need to be saved the result of deletion by the source that Notify message is sent to electric layer channel
Point the case where to inform photosphere channel, needs that mark is arranged in the Notify message of standard, shows that this Notify message is used for
The result notice that channel is deleted.
The present invention is described in detail with specific embodiment with reference to the accompanying drawings of the specification.
The embodiment of the invention provides a kind of realization sides for the signaling extensions for establishing cross-layer channel in WSON using electricity relaying
Method, has modified the transmission mechanism of Notify message, and current mechanism is to receive the Path message of Notify Request object
Node could send Notify message, and the present invention eliminates this limitation, make to be not received by Notify Request object
The node of Path message can also send Notify message, and this Notify message is forwarded by IP, can be sent
To any node, the source node in such electric layer channel could send Notify message to the source node in photosphere channel.
Invention increases the classes of Error code and Error value in the ERROR_SPEC object of Notify message
Type, newly-increased Error code value is used to indicate the type of Notify message, as shown in table 1, with Error code=0x7001
Indicate that channel is established in request, Error code=0x7002 indicates that backward channel is established as a result, Error code=0x7003 table
Show that channel is deleted in request, Error code=0x7004 indicates that backward channel deletes result.For indicating that backward channel establishes knot
The Notify message of fruit, at least successful or two kinds of failure as a result, with indicate Path Setup as a result, such as Error
Value=0 indicates Path Setup success, and Error value=1 indicates Path Setup failure；For indicating that backward channel is deleted
As a result Notify message, at least successful or two kinds of failure is as a result, to indicate that channel deletes as a result, such as Error
Value=0 indicates that channel is deleted successfully, and Error value=1 indicates that failure is deleted in channel.
Table 1：Extend Error Code and Error Value the value example of Notify message.
Invention increases the object types that Notify message includes, and increase by one is optional behind ERROR_SPEC object
Item Path Message, this Path Message is identical as the format of RSVP Path message, can choose all for Path
The object of message, for carrying the information for establishing photosphere channel or the information for deleting photosphere channel, when in ERROR_SPEC
When Error Value value is above-mentioned specified particular value, Path is carried behind the ERROR_SPEC object of Notify message
Message；When Error Value is other values, Notify session list is carried behind ERROR_SPEC object, is expanded
Notify message format after exhibition is as follows：
As shown in Fig. 2, the automatic establishment process in photosphere channel specifically includes following steps：
S1, it receives when establishing electric layer channel request, the source node in electric layer channel judges light according to existing resource situation
Whether layer channel meets electric layer business demand, if it is satisfied, turning S5；Otherwise turn S2.
The source node transmission request of S2, electric layer channel establish channel Notify message to the source node in photosphere channel, and
The result for waiting photosphere channel backward channel to establish.
Error Code value in the ERROR_SPEC object of channel Notify message is established in request should be 0x7001, Error
The value of value is all right of the Path message of the Path Message carrying Path Setup information in 0, ERROR_SPEC object
As.
S3, photosphere channel source node receive after request establishes channel Notify message, establish channel using request
The Path Setup information carried in Notify message establishes photosphere channel.
After the completion of S4, photosphere Path Setup, no matter successful or failure, the source node in photosphere channel are built by backward channel
Vertical result Notify message sends the result of Path Setup to the source node in electric layer channel, turns S5.
Backward channel, which establishes Error Code value in the ERROR_SPEC object of result Notify message, should be 0x7002,
The value of Error value is if 0, then it represents that the success of photosphere Path Setup；The value of Error value is if 1, then it represents that photosphere is logical
Failure is established in road.
S5, creation electric layer channel.
S6, end.
As shown in figure 3, the process that is automatically deleted in photosphere channel specifically includes following steps：
S11, receive delete electric layer channel request when, the source node in electric layer channel judge on photosphere channel whether there is holds
Other electric layer business carried, if so, turning S15；Otherwise turn S12.
The source node transmission request of S12, electric layer channel delete channel Notify message to the source node in photosphere channel, and
The result for waiting photosphere channel backward channel to delete.
Error Code value in the ERROR_SPEC object of channel Notify message is deleted in request should be 0x7003, Error
The value of value is all right of the Path message of the Path Message carrying channel deletion information in 0, ERROR_SPEC object
As.
S13, photosphere channel source node receive request delete channel Notify message after, utilize request delete channel
Delete information deletion photosphere channel in the channel carried in Notify message.
After the completion of S14, photosphere channel are deleted, the source node in photosphere channel deletes result Notify message by backward channel
It sends the result that channel is deleted to the source node in electric layer channel, turns S15.
Backward channel, which deletes Error Code value in the ERROR_SPEC object of result Notify message, should be 0x7004,
The value of Error value is if 0, then it represents that deletes successfully in channel photosphere channel；The value of Error value is if 1, then it represents that light
Delete failure in layer channel.
S15, electric layer channel is deleted.
S16, end.
The present invention is not limited to above-mentioned preferred forms, anyone structure change made under the inspiration of the present invention,
The technical schemes that are same or similar to the present invention are fallen within the scope of protection of the present invention.
Claims (5)
- The implementation method of the signaling extensions in cross-layer channel is established in 1.WSON using electricity relaying, which is characterized in that including following step Suddenly：Increase the corresponding mark established or deleted automatically for photosphere channel and information in Resource Reservation Protocol Notify message, When receiving foundation or deleting the request in electric layer channel, pass through between the source node in electric layer channel and the source node in photosphere channel IP forwards Notify message to realize the automatic foundation in photosphere channel or delete.
- 2. the method as described in claim 1, which is characterized in that increased in Notify message to be built automatically for photosphere channel Vertical mark include request establish channel and backward channel establish as a result, increased information include sourcesink node IP, channel number, Instance number includes node, tag request, session attribute and privately owned field.
- 3. the method as described in claim 1, which is characterized in that increased in Notify message to be deleted automatically for photosphere channel The mark removed includes that request deletes channel and backward channel deletion as a result, increased information includes sourcesink node IP, channel number And instance number.
- 4. the method as described in claim 1, which is characterized in that the automatic establishment process in photosphere channel specifically includes following step Suddenly：It receives when establishing electric layer channel request, the source node in electric layer channel judges whether photosphere channel meets electric layer business need It asks, if it is satisfied, then creating electric layer channel and terminating；Otherwise, it sends request and establishes channel Notify message to photosphere channel Source node；The source node in photosphere channel receives after request establishes channel Notify message, establishes channel Notify message using request The information of middle carrying establishes photosphere channel；After the completion of photosphere Path Setup, the source node in photosphere channel establishes result Notify message by backward channel and builds channel Vertical result is sent to the source node in electric layer channel, creates electric layer channel and terminates.
- 5. the method as described in claim 1, which is characterized in that the process that is automatically deleted in photosphere channel specifically includes following step Suddenly：When receiving deletion electric layer channel request, the source node in electric layer channel judges to whether there is other carried on photosphere channel Electric layer business, if it is, deleting electric layer channel and terminating；Otherwise, it is logical to photosphere to send request deletion channel Notify message The source node in road；After the source node in photosphere channel receives request deletion channel Notify message, request is utilized to delete channel Notify message The information deletion photosphere channel of middle carrying；After the completion of photosphere channel is deleted, the source node in photosphere channel deletes result Notify message by backward channel and deletes channel The result removed is sent to the source node in electric layer channel, deletes electric layer channel and terminates.
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