CN101998182B - Information processing method, optical communication device and optical communication system in optical networks - Google Patents
Information processing method, optical communication device and optical communication system in optical networks Download PDFInfo
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- CN101998182B CN101998182B CN 200910161790 CN200910161790A CN101998182B CN 101998182 B CN101998182 B CN 101998182B CN 200910161790 CN200910161790 CN 200910161790 CN 200910161790 A CN200910161790 A CN 200910161790A CN 101998182 B CN101998182 B CN 101998182B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1652—Optical Transport Network [OTN]
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Abstract
The invention discloses an information processing method, optical communication device and optical communication system in optical networks. The method comprises the following steps: a first nodes sends an indication massage to a second node, wherein the indication information carries flow parameters which are used for establishing service connection, and the flow parameters comprise signal types and service bandwidth of an optical channel data unit (ODUflex) with flexible bandwidth; the second node distributes a time slot resource for services of the ODUflex in accordance with the flow parameters in the received indication information, establishes cross connection associated to the ODUflex signal in accordance with information of the distributed time slot resource, and returns a response massage carrying the information of the time slot resource to the first node; and the first node establishes cross connection associated to the ODUflex signal in accordance with the information of the time slot resource. By using the scheme of invention, the ODUflex signal types can be supported and the ODUflex services is established.
Description
Technical field
The present invention relates to the optical communication technique field, be specifically related to information processing method, optical communication apparatus and optical communication system in a kind of optical-fiber network.
Background technology
Optical transfer network (OTN, Optical Transport Network) technology is a kind of new light tranmission techniques, can realize flexible dispatching and the management of big capacity business, has become the mainstream technology of Backbone Transport Network at present.
3 kinds of signal types have been defined among the existing OTN: Optical Channel Data Unit-k 1 (ODU1, OpticalChannel Data Unit 1), ODU2, ODU3, it comprises 1,4,16 time slots respectively, and the time slot type all is 2.5Gb/s, and has fixing bandwidth.Utilize general multiple protocols label exchange (GMPLS at control plane, General MultiProtocal Label Switching) RSVP (RSVP-TE of the traffic engineering of expansion expansion, Resource ReserVation Protocol-TrafficEngineering) RSVP-TE signaling message, carry signal type, can realize the automatic foundation that ODU1/ODU2/ODU3 connects.
In research and practice process to the method, the present inventor finds: proposed new ODU signal type, the i.e. ODU of flexible bandwidth (ODUflex, flexible ODU) at present.The bandwidth of ODUflex signal type is fixing, can be used for the client signal of the multiple granularity of carrying, but the entrained information of signaling message of prior art employing at present can not be supported the ODUflex signal type and set up the ODUflex business.
Summary of the invention
The embodiment of the invention provides a kind of and can support the ODUflex signal type and set up information processing method, optical communication apparatus and optical communication system in the optical-fiber network of ODUflex business.
Information processing method in a kind of optical-fiber network comprises:
First node sends Indication message to Section Point, described Indication message carries for setting up the professional flow parameter that connects, and described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Described Section Point is according to the flow parameter in the described Indication message that receives, traffic assignments time interval resource for ODUflex, the interconnection of setting up related ODUflex signal according to the distributed time slot resource information, and return the response message that carries described time interval resource information to described first node;
Described first node is according to the described time interval resource information that receives, the interconnection of setting up related ODUflex signal.
Information processing method in a kind of optical-fiber network comprises:
First node is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Described first node sends Indication message to Section Point, and described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex;
The interconnection that described Section Point is set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information, and return response message to described first node;
After described first node receives described response message, according to described time interval resource information, the interconnection of setting up related ODUflex signal.
Information processing method in a kind of optical-fiber network comprises:
First node is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
The interconnection that described first node is set up related ODUflex signal according to described time interval resource information;
Described first node sends Indication message to Section Point, and described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex;
The interconnection that described Section Point is set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information.
A kind of optical communication system comprises:
First optical communication apparatus, be used for sending Indication message to second optical communication apparatus, described Indication message carries for setting up the professional flow parameter that connects, and described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; The time interval resource information of carrying in the response message that returns according to described second optical communication apparatus, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus, be used for the flow parameter according to the described Indication message that receives, traffic assignments time interval resource for ODUflex, the interconnection of setting up related ODUflex signal according to the distributed time slot resource information, and return the described response message that carries described time interval resource information to described first optical communication apparatus.
A kind of optical communication system comprises:
First optical communication apparatus is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; Send Indication message to second optical communication apparatus, described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex; After receiving the response message that described second optical communication apparatus returns, according to described time interval resource information, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus is used for the interconnection of setting up related ODUflex signal according to the described flow parameter of the described Indication message that receives and described time interval resource information, and returns described response message to described first optical communication apparatus.
A kind of optical communication system comprises:
First optical communication apparatus is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; Send Indication message to second optical communication apparatus, described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex; According to described time interval resource information, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus is used for the interconnection of setting up related ODUflex signal according to the described flow parameter of the described Indication message that receives and described time interval resource information.
A kind of optical communication apparatus comprises:
The message sink unit, be used for receiving the Indication message that the adjacent light communicator sends, described Indication message carries for setting up the professional flow parameter that connects, and described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
The distributing slot resources unit is used for the flow parameter according to the described Indication message of described message sink unit reception, is the traffic assignments time interval resource of ODUflex;
The unit is set up in interconnection, is used for the time interval resource information definite according to described distributing slot resources unit, the interconnection of setting up related ODUflex signal;
Message sending unit, be used for returning the response message that carries the described time interval resource information of determining described distributing slot resources unit to described adjacent light communicator, make described adjacent light communicator according to described time interval resource information, the interconnection of setting up related ODUflex signal.
A kind of optical communication apparatus comprises:
The professional flow parameter that connects is set up according to being used in the distributing slot resources unit, is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Message sending unit, be used for sending Indication message to the adjacent light communicator, described Indication message carries in described flow parameter and the described distributing slot resources unit time interval resource information of determining, makes the interconnection that described adjacent light communicator is set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information;
The message sink unit is used for receiving described adjacent light communicator and sets up the response message that returns after the interconnection of related ODUflex signal;
The unit is set up in interconnection, is used for after described message sink unit receives described response message, according to described time interval resource information, the interconnection of setting up related ODUflex signal.
A kind of optical communication apparatus comprises:
The professional flow parameter that connects is set up according to being used in the distributing slot resources unit, is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Message sending unit, be used for sending Indication message to the adjacent light communicator, described Indication message carries in described flow parameter and the described distributing slot resources unit time interval resource information of determining, makes the interconnection that described adjacent light communicator is set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information;
The unit is set up in interconnection, is used for the interconnection of setting up related ODUflex signal according to described time interval resource information.
The invention described above embodiment first technical scheme as can be seen, the Indication message that embodiment of the invention first node sends to Section Point carries for setting up the professional flow parameter that connects, described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex, by these information, can realize the support to the ODUflex signal type, Section Point can distribute time interval resource according to the flow parameter in the Indication message, the interconnection of setting up related ODUflex signal according to the distributed time slot resource information, and return the response message that carries described time interval resource information to described first node; Described first node can be according to the described time interval resource information that receives, and therefore the interconnection of setting up related ODUflex signal realizes the foundation of ODUflex business.
The invention described above embodiment second technical scheme as can be seen, embodiment of the invention first node is the traffic assignments time interval resource of ODUflex according to be used for setting up the professional flow parameter that connects; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex, by these information, can realize the support to the ODUflex signal type; First node can send to Section Point and carries described flow parameter and to be the Indication message of the time interval resource information of the traffic assignments of ODUflex; The interconnection that described Section Point can be set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information; Described first node also can be according to described time interval resource information, and therefore the interconnection of setting up related ODUflex signal, can realize the foundation of ODUflex business.
In addition, the interconnection that first node is set up related ODUflex signal can be to carry out in the stage that sends Indication message to described Section Point, also can carry out behind the response message that the described Section Point of reception returns, and therefore uses comparatively flexible.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the information processing method in the optical-fiber network of the embodiment of the invention one;
Fig. 2 is the flow chart of the information processing method in the optical-fiber network of the embodiment of the invention two;
Fig. 3 is the flow chart of the information processing method in the optical-fiber network of the embodiment of the invention three;
Fig. 4 is the form schematic diagram of the flow parameter of the embodiment of the invention;
Fig. 5 is the application scenarios schematic diagram of the embodiment of the invention;
Fig. 6 is the information processing method flow chart of the embodiment of the invention four;
Fig. 7 is the information processing method flow chart of the embodiment of the invention five;
Fig. 8 is the information processing method flow chart of the embodiment of the invention six;
Fig. 9 is the optical communication system structural representation of the embodiment of the invention;
Figure 10 is optical communication apparatus structure one schematic diagram of the embodiment of the invention;
Figure 11 is optical communication apparatus structure two schematic diagrames of the embodiment of the invention;
Figure 12 is optical communication apparatus structure three schematic diagrames of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making all other embodiment that obtain under the creative work prerequisite.
The embodiment of the invention provides a kind of and can support the ODUflex signal type and set up information processing method in the optical-fiber network of ODUflex business.The embodiment of the invention also provides corresponding optical communication apparatus and optical communication system.Below be elaborated respectively.
Fig. 1 is the flow chart of the information processing method in the optical-fiber network of the embodiment of the invention one, mainly comprises step:
The bit rate tolerance limit that also comprises ODUflex in the flow parameter of described Indication message;
This method specifically comprises: described Section Point is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
From embodiment one content as can be seen, the Indication message that embodiment of the invention first node sends to Section Point carries for setting up the professional flow parameter that connects, described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex, by these information, can realize the support to the ODUflex signal type, Section Point can distribute time interval resource according to the flow parameter in the Indication message, the interconnection of setting up related ODUflex signal according to the distributed time slot resource information, and return the response message that carries described time interval resource information to described first node; Described first node can be according to the described time interval resource information that receives, and therefore the interconnection of setting up related ODUflex signal realizes the foundation of ODUflex business.
Fig. 2 is the flow chart of the information processing method in the optical-fiber network of the embodiment of the invention two, mainly comprises step:
The interconnection that step 203, described Section Point are set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information, and return response message to described first node;
After step 204, described first node receive described response message, according to described time interval resource information, the interconnection of setting up related ODUflex signal.
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
This method specifically comprises: described first node is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
From embodiment two contents as can be seen, embodiment of the invention first node is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex, by these information, can realize the support to the ODUflex signal type; First node can send to Section Point and carries described flow parameter and to be the Indication message of the time interval resource information of the traffic assignments of ODUflex; The interconnection that described Section Point can be set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information; Described first node also can be according to described time interval resource information, and therefore the interconnection of setting up related ODUflex signal, can realize the foundation of ODUflex business.
In addition, first node is set up the interconnection of related ODUflex signal and can be carried out behind the response message that the described Section Point of reception returns, and therefore uses comparatively flexible.
Fig. 3 is the flow chart of the information processing method in the optical-fiber network of the embodiment of the invention three, mainly comprises step:
Need to prove that step 302 and 303 does not have ordinal relation.
The interconnection that step 304, described Section Point are set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information.
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
This method specifically comprises: described first node is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
From embodiment three contents as can be seen, embodiment of the invention first node is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex, by these information, can realize the support to the ODUflex signal type; First node can send to Section Point and carries described flow parameter and to be the Indication message of the time interval resource information of the traffic assignments of ODUflex; The interconnection that described Section Point can be set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information; Described first node also can be according to described time interval resource information, and therefore the interconnection of setting up related ODUflex signal, can realize the foundation of ODUflex business.
In addition, the interconnection that first node is set up related ODUflex signal can be to carry out in the stage that sends Indication message to described Section Point, uses comparatively flexible.
Carry out more detailed introduction below in conjunction with four to embodiment six pairs of embodiment of the invention of embodiment.
Embodiment of the invention technical scheme can for example be to connect to set up to carry flow parameter in the request message at Indication message, comprises the signal type of ODUflex, the service bandwidth of ODUflex and the bit rate tolerance limit of ODUflex in the flow parameter; Each node can need determine the time interval resource of reservation according to these information so, uses for ODUflex is professional.Concrete mainly be included as professional connect the node in each link of process distribute time interval resource, and with the distributed time slot resource distribution for transmitting the ODUflex signal, and the interconnection of being set up related ODUflex signal by each node.
In the embodiment of the invention existing OTN flow parameter is expanded, specifically referring to Fig. 4.Fig. 4 is the form schematic diagram of the flow parameter of the embodiment of the invention.
As shown in Figure 4, newly-increased a kind of signal type is namely represented on the basis of different implications in the different values of existing signal type Signal the type field in the embodiment of the invention, sets new value and represents the ODUflex signal type.For example get Signal Type=14 (also can be that other also the value of not using at present), expression is the ODUflex signal type, need set up the ODUflex business.
The service bandwidth Bandwidth field that also comprises ODUflex among Fig. 4, the average traffic bandwidth for expression ODUflex business can adopt the form of floating number to represent.Other field is identical with existing definition among Fig. 4.
The bit rate tolerance limit Tolerance field that can also comprise ODUflex among Fig. 4, the unit of bit rate tolerance limit is 1,000,000/(PPM, parts per million).The bandwidth of ODUflex business is to allow to float in a very little scope.The effect of bit rate tolerance limit is the bandwidth maximum float scope that indicates the ODUflex business.According to service bandwidth field and bit rate tolerance limit field, can indicate the practical business bandwidth range of ODUflex more accurately, thereby can calculate the professional needed time interval resource quantity of ODUflex more accurately, and be ODUflex traffic assignments time interval resource.
For example, the service bandwidth of supposing ODUflex is 1Gbps, and the bit rate tolerance limit is that 10 (namely ± 10ppm), then the practical business bandwidth range is: (1-10*10
-6) Gbps～(1+10*10
-6) Gbps.
Following content is introduced embodiment four to embodiment six respectively in detail in conjunction with an application scenarios and is utilized flow parameter that the embodiment of the invention provides to realize the concrete scheme of ODUflex business.Be the convenience of describing, hereinafter, service bandwidth abbreviates bandwidth as, and the bit rate tolerance limit abbreviates tolerance limit as.
Fig. 5 is the application scenarios schematic diagram of the embodiment of the invention.
Suppose to comprise in the network node A, B, C, need set up a bandwidth is 2.5Gbps, and (professional actual bandwidth scope is tolerance limit: (2.5-20*10 for the ODUflex business of ± 20ppm
-6～2.5+20*10
-6) Gbps)), and the hypothesis service path has been defined as from node A arriving node C again to Node B, and the Linktype between node A and the Node B is ODU2, the Linktype between Node B and the node C is ODU4.Adopt the GMPLS RSVP-TE agreement of expansion to carry out road construction in the network.
Embodiment four: embodiment four mainly distributes time interval resource by downstream node.
Fig. 6 is the information processing method flow chart of the embodiment of the invention four, mainly comprises step:
Get Signal Type=14 (also can be that other also the value of not using at present) in the flow parameter, expression is the ODUflex signal type.
After step 602, Node B are received Path message, transmit Path message to node C, flow parameter wherein is constant.
Node C is professional destination node, the time interval resource that node C reserves according to the link B-C needs between flow parameter computing node B and the node C, thus distribute time interval resource.Because the Linktype between the link B-C is ODU4, and the bandwidth of the single time slot of ODU4 is about 1.301711855Gbps, tolerance limit is 20ppm, and namely each time slot of ODU4 can provide (1.301711855-20*10 at least
-6) bandwidth of Gbps.Therefore, only need 2 time slots that ODUflex just can be provided professional needed bandwidth.
Node C reserves the time slot of 2 free time as the distributed time slot resource from link B-C, the distributed time slot resource distribution is transmission ODUflex signal, and between the time interval resource of in link B-C, reserving and the final client's side ODUflex signal corresponding port, set up the interconnection of related ODUflex signal, namely can upload the ODUflex signal of the family side of seing a visitor out at link B-C.
In addition, node C sends Resv message to Node B, comprises label in the Resv message, and this label is used to indicate 2 time slots reserving into link B-C.
After Node B is received Resv message, calculate the time interval resource that link A-B needs are reserved according to flow parameter.Because the Linktype between the link A-B is ODU2, and the bandwidth of the single time slot of ODU2 is about 1.249412119Gbps, tolerance limit is 20ppm, and namely each time slot of ODU2 can provide (1.249412119+20*10 at the most
-6) bandwidth of Gbps, 2 time slots can only provide the bandwidth of about 2.498Gbps at the most, and deficiency thinks that the ODUflex business provides enough bandwidth, so Node B need be reserved 3 time slots and uses for professional.
Node B is reserved the time slot of 3 free time as the distributed time slot resource from link A-B, and with the time interval resource of reserving among link A-B and the link B-C, be configured to transmit the ODUflex signal respectively, and between the port of the time interval resource of reserving among the time interval resource of in link A-B, reserving and the link B-C, the interconnection of setting up related ODUflex signal.
In addition, Node B also sends Resv message to node A, comprises label in the Resv message, and this label is used to indicate 3 time slots reserving into link A-B.
After node A receives Resv message, to be the time interval resource of link A-B reservation, be configured to transmit the ODUflex signal, and between the time interval resource of in link A-B, reserving and the final client's side ODUflex signal corresponding port, the interconnection of setting up related ODUflex signal.So far, the professional foundation of ODUflex finished.
From embodiment four as can be seen, carry flow parameter in the Path message that upstream node sends, comprise the signal type of ODUflex, the service bandwidth of ODUflex and the bit rate tolerance limit of ODUflex in the flow parameter, by these information, can realize the support to the ODUflex signal type, each node of downstream can be determined the time interval resource that needs are reserved according to these information so, uses for ODUflex is professional, realizes the foundation of ODUflex business.
Embodiment five: embodiment five mainly distributes time interval resource by upstream node.
Fig. 7 is the information processing method flow chart of the embodiment of the invention five, mainly comprises step:
Step 701, node A distribute time interval resource, and send Path message to Node B.
The time interval resource that node A reserves according to the bandwidth calculation link A-B needs of ODUflex service needed.
Because the Linktype between the link A-B is ODU2, and the bandwidth of the single time slot of ODU2 is about 1.249412119Gbps, tolerance limit is 20ppm, and namely each time slot of ODU2 can provide (1.249412119+20*10 at the most
-6) bandwidth of Gbps, 2 time slots can only provide the bandwidth of about 2.498Gbps at the most, and deficiency thinks that the ODUflex business provides enough bandwidth, so Node B need be reserved 3 time slots and uses for professional.
Node A reserves the time slot of 3 free time as the distributed time slot resource from link A-B, and to Node B transmission Path message, carry the flow parameter of expansion in the Path message, specifying signal type in the flow parameter is ODUflex, service bandwidth is 2.5Gbps, tolerance limit is ± 20ppm also to be designated as 3 time slots that link A-B reserves in addition in the label of Path message.
Get Signal Type=14 (also can be that other also the value of not using at present) in the flow parameter, expression is the ODUflex signal type.
Step 702, Node B are distributed time interval resource, and send Path message to node C.
After Node B is received Path message, calculate the time interval resource that link B-C needs are reserved according to flow parameter.Because the Linktype between the link B-C is ODU4, and the bandwidth of the single time slot of ODU4 is about 1.301711855Gbps, tolerance limit is 20ppm, and namely each time slot of ODU4 can provide (1.301711855-20*10 at least
-6) bandwidth of Gbps.Therefore, only need 2 time slots that ODUflex just can be provided professional needed bandwidth.
Node B is reserved the time slot of 2 free time as the distributed time slot resource from link B-C, and to node C transmission Path message, carry the flow parameter of expansion in the Path message, specifying signal type in the flow parameter is ODUflex, service bandwidth is 2.5Gbps, tolerance limit is ± 20ppm also to be designated as 2 time slots that link B-C reserves in addition in the label of Path message.
Step 703, node C reserve time interval resource according to indication, and send Resv message to Node B.
Node C is professional destination node, according to Node B distributed time slot resource information, reserves time interval resource, and the distributed time slot resource distribution is transmitted the ODUflex signal.Between the time interval resource of reserving in link B-C and the final client's side ODUflex signal corresponding port, the interconnection of setting up related ODUflex signal namely can be uploaded the ODUflex signal of the family side of seing a visitor out at link B-C.
In addition, node C returns Resv message to Node B.
Step 704, Node B are set up the interconnection of related ODUflex signal, and transmit Resv message to node A.
After Node B is received Resv message, with the time interval resource of reserving among link A-B and the link B-C, be configured to transmit the ODUflex signal respectively, and between the port of the time interval resource of reserving among the time interval resource of in link A-B, reserving and the link B-C, the interconnection of setting up related ODUflex signal.
In addition, Node B is transmitted Resv message to node A.
The interconnection that step 705, node A set up related ODUflex signal.
After node A receives Resv message, to be the time interval resource of link A-B reservation, be configured to transmit the ODUflex signal, between the time interval resource of in link A-B, reserving and the final client's side ODUflex signal corresponding port, the interconnection of setting up related ODUflex signal.So far, the professional foundation of ODUflex finished.
Need to prove that the distributing slot resources mode among above-mentioned two embodiment also can combine use.For example: between node A and the Node B, the mode that adopts upstream node to distribute time interval resource is by the time slot of node A notice Node B in link A-B; Between Node B and the node C, the mode that adopts downstream node to distribute time interval resource is by the time slot among the node C distribute links B-C.
From embodiment five as can be seen, carry flow parameter in the Path message that upstream node sends, comprise the signal type of ODUflex, the service bandwidth of ODUflex and the bit rate tolerance limit of ODUflex in the flow parameter, by these information, can realize the support to the ODUflex signal type, each node of upstream can also be determined the time interval resource that needs are reserved according to these information in addition, uses for downstream node.
Embodiment six:
Embodiment six with the difference of above-mentioned two embodiment is, among above-mentioned two embodiment, is to finish in response (Resv message) stage about the interconnection of related ODUflex signal.When distributing time interval resource by upstream node, for example among the embodiment four, about the interconnection of related ODUflex signal, also can finish in request stage (Path message).
Fig. 8 is the information processing method flow chart of the embodiment of the invention six, mainly comprises step:
Step 801 is basic identical with the step 701 among the embodiment five, different with embodiment five steps 701 is, in the present embodiment, node A is for after link A-B reserves time interval resource, also the time interval resource that will reserve for link A-B be configured to transmit the ODUflex signal, and between the time interval resource of in link A-B, reserving and the final client's side ODUflex signal corresponding port, set up the interconnection of related ODUflex signal, namely finished the interconnection of related ODUflex signal in request stage.
Step 802 is basic identical with the step 702 among the embodiment five, different with embodiment five steps 702 is, in the present embodiment, Node B is for after link B-C reserves time interval resource, also with the time interval resource of reserving among link A-B and the link B-C, be configured to transmit the ODUflex signal respectively, and between the port of the time interval resource of reserving among the time interval resource of in link A-B, reserving and the link B-C, set up the interconnection of related ODUflex signal, namely finished the interconnection of related ODUflex signal in request stage.
The description of step 803 is identical with the step 703 of embodiment five.In this step, between the time interval resource that node C reserves in link B-C and the final client's side ODUflex signal corresponding port, the interconnection of setting up related ODUflex signal.
After Node B is received Resv message, transmit Resv message to node A.
After node A received Resv message, the professional foundation of expression ODUflex finished.
Need to prove that in the embodiment of the invention, can be determined separately the opportunity that the interconnection of related ODUflex signal is set up by each node.
Embodiment six and embodiment five have essentially identical effect, and difference is to finish relevant connection in request stage (Path message).
Foregoing describes the information processing method in the optical-fiber network of the embodiment of the invention in detail, and corresponding, the embodiment of the invention provides a kind of optical communication apparatus and optical communication system.
Fig. 9 is the optical communication system structural representation of the embodiment of the invention.
As shown in Figure 9, optical communication system comprises: first optical communication apparatus 901, second optical communication apparatus 902.
Execution mode one:
First optical communication apparatus 901, be used for sending Indication message to second optical communication apparatus 902, described Indication message carries for setting up the professional flow parameter that connects, and described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; The time interval resource information of carrying in the response message that returns according to described second optical communication apparatus 902, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus 902, be used for the flow parameter according to the described Indication message that receives, traffic assignments time interval resource for ODUflex, the interconnection of setting up related ODUflex signal according to the distributed time slot resource information, and return the described response message that carries described time interval resource information to described first optical communication apparatus 901.
The bit rate tolerance limit that can also comprise ODUflex in the flow parameter of described Indication message, then described second optical communication apparatus 902 is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
Execution mode two:
First optical communication apparatus 901 is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; Send Indication message to second optical communication apparatus 902, described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex; After receiving the response message that described second optical communication apparatus 902 returns, according to described time interval resource information, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus 902 is used for the interconnection of setting up related ODUflex signal according to the described flow parameter of the described Indication message that receives and time interval resource information, and returns response message to described first optical communication apparatus 901.
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
Described first optical communication apparatus 901 specifically according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter, is the traffic assignments time interval resource of ODUflex.
Execution mode three:
First optical communication apparatus 901 is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; Send Indication message to second optical communication apparatus 902, described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex; According to described time interval resource information, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus 902 is used for the interconnection of setting up related ODUflex signal according to the described flow parameter of the described Indication message that receives and time interval resource information.
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
Described first optical communication apparatus 901 specifically according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter, is the traffic assignments time interval resource of ODUflex.
Figure 10 is optical communication apparatus structure one schematic diagram of the embodiment of the invention.
As shown in figure 10, optical communication apparatus comprises:
Message sink unit 1001, be used for receiving the Indication message that the adjacent light communicator sends, described Indication message carries for setting up the professional flow parameter that connects, and described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Distributing slot resources unit 1002 is used for the flow parameter according to the described Indication message of described message sink unit 1001 receptions, is the traffic assignments time interval resource of ODUflex;
Unit 1003 is set up in interconnection, for the time interval resource information of determining according to described distributing slot resources unit 1002, the interconnection of setting up related ODUflex signal;
Message sending unit 1004, be used for returning the response message that carries the described time interval resource information of determining described distributing slot resources unit 1002 to described adjacent light communicator, make described adjacent light communicator according to described time interval resource information, the interconnection of setting up related ODUflex signal.
The bit rate tolerance limit that also comprises ODUflex in the flow parameter of the Indication message that described message sink unit 1001 receives;
Described distributing slot resources unit 1002 is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
Figure 11 is optical communication apparatus structure two schematic diagrames of the embodiment of the invention.
As shown in figure 11, optical communication apparatus comprises:
The professional flow parameter that connects is set up according to being used in distributing slot resources unit 1101, is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
Described distributing slot resources unit 1101 specifically according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter, is the traffic assignments time interval resource of ODUflex.
Figure 12 is optical communication apparatus structure three schematic diagrames of the embodiment of the invention.
As shown in figure 12, optical communication apparatus comprises:
The professional flow parameter that connects is set up according to being used in distributing slot resources unit 1201, is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
Described distributing slot resources unit 1201 specifically according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter, is the traffic assignments time interval resource of ODUflex.
Need to prove, contents such as the information interaction between said apparatus and intrasystem each unit, implementation since with the inventive method embodiment based on same design, particular content can repeat no more referring to the narration among the inventive method embodiment herein.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to instruct relevant hardware to finish by program, this program can be stored in the computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
More than information processing method, optical communication apparatus and optical communication system in the optical-fiber network that the embodiment of the invention is provided be described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (18)
1. the information processing method in the optical-fiber network is characterized in that, comprising:
First node sends Indication message to Section Point, described Indication message carries for setting up the professional flow parameter that connects, and described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Described Section Point is according to the flow parameter in the described Indication message that receives, traffic assignments time interval resource for ODUflex, the interconnection of setting up related ODUflex signal according to the distributed time slot resource information, and return the response message that carries described time interval resource information to described first node;
Described first node is according to the described time interval resource information that receives, the interconnection of setting up related ODUflex signal.
2. the information processing method in the optical-fiber network according to claim 1 is characterized in that:
The bit rate tolerance limit that also comprises ODUflex in the flow parameter of described Indication message;
This method specifically comprises: described Section Point is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
3. the information processing method in the optical-fiber network is characterized in that, comprising:
First node is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Described first node sends Indication message to Section Point, and described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex;
The interconnection that described Section Point is set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information, and return response message to described first node;
After described first node receives described response message, according to described time interval resource information, the interconnection of setting up related ODUflex signal.
4. the information processing method in the optical-fiber network according to claim 3 is characterized in that:
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
This method specifically comprises: described first node is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
5. the information processing method in the optical-fiber network is characterized in that, comprising:
First node is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
The interconnection that described first node is set up related ODUflex signal according to described time interval resource information;
Described first node sends Indication message to Section Point, and described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex;
The interconnection that described Section Point is set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information.
6. the information processing method in the optical-fiber network according to claim 5 is characterized in that:
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
This method specifically comprises: described first node is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
7. an optical communication system is characterized in that, comprising:
First optical communication apparatus, be used for sending Indication message to second optical communication apparatus, described Indication message carries for setting up the professional flow parameter that connects, and described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; The time interval resource information of carrying in the response message that returns according to described second optical communication apparatus, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus, be used for the flow parameter according to the described Indication message that receives, traffic assignments time interval resource for ODUflex, the interconnection of setting up related ODUflex signal according to the distributed time slot resource information, and return the described response message that carries described time interval resource information to described first optical communication apparatus.
8. optical communication system according to claim 7 is characterized in that:
The bit rate tolerance limit that also comprises ODUflex in the flow parameter of the Indication message that described first optical communication apparatus sends;
Described second optical communication apparatus is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
9. an optical communication system is characterized in that, comprising:
First optical communication apparatus is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; Send Indication message to second optical communication apparatus, described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex; After receiving the response message that described second optical communication apparatus returns, according to described time interval resource information, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus is used for the interconnection of setting up related ODUflex signal according to the described flow parameter of the described Indication message that receives and described time interval resource information, and returns described response message to described first optical communication apparatus.
10. optical communication system according to claim 9 is characterized in that:
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
Described first optical communication apparatus specifically according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter, is the traffic assignments time interval resource of ODUflex.
11. an optical communication system is characterized in that, comprising:
First optical communication apparatus is set up the professional flow parameter that connects according to being used for, and is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex; Send Indication message to second optical communication apparatus, described Indication message carries described flow parameter and is the time interval resource information of the traffic assignments of ODUflex; According to described time interval resource information, the interconnection of setting up related ODUflex signal;
Second optical communication apparatus is used for the interconnection of setting up related ODUflex signal according to the described flow parameter of the described Indication message that receives and described time interval resource information.
12. optical communication system according to claim 11 is characterized in that:
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
Described first optical communication apparatus specifically according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter, is the traffic assignments time interval resource of ODUflex.
13. an optical communication apparatus is characterized in that, comprising:
The message sink unit, be used for receiving the Indication message that the adjacent light communicator sends, described Indication message carries for setting up the professional flow parameter that connects, and described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
The distributing slot resources unit is used for the flow parameter according to the described Indication message of described message sink unit reception, is the traffic assignments time interval resource of ODUflex;
The unit is set up in interconnection, is used for the time interval resource information definite according to described distributing slot resources unit, the interconnection of setting up related ODUflex signal;
Message sending unit, be used for returning the response message that carries the described time interval resource information of determining described distributing slot resources unit to described adjacent light communicator, make described adjacent light communicator according to described time interval resource information, the interconnection of setting up related ODUflex signal.
14. optical communication apparatus according to claim 13 is characterized in that:
The bit rate tolerance limit that also comprises ODUflex in the flow parameter of the Indication message that described message sink unit receives;
Described distributing slot resources unit is the traffic assignments time interval resource of ODUflex according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter.
15. an optical communication apparatus is characterized in that, comprising:
The professional flow parameter that connects is set up according to being used in the distributing slot resources unit, is the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Message sending unit, be used for sending Indication message to the adjacent light communicator, described Indication message carries in described flow parameter and the described distributing slot resources unit time interval resource information of determining, makes the interconnection that described adjacent light communicator is set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information;
The message sink unit is used for receiving described adjacent light communicator and sets up the response message that returns after the interconnection of related ODUflex signal;
The unit is set up in interconnection, is used for after described message sink unit receives described response message, according to described time interval resource information, the interconnection of setting up related ODUflex signal.
16. optical communication apparatus according to claim 15 is characterized in that:
The bit rate tolerance limit that also comprises ODUeflx in the described flow parameter;
Described distributing slot resources unit specifically according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter, is the traffic assignments time interval resource of ODUflex.
17. an optical communication apparatus is characterized in that, comprising: the distributing slot resources unit, set up the professional flow parameter that connects according to being used for, be the traffic assignments time interval resource of ODUflex; Described flow parameter comprises that signal type is the signal type of the Optical Channel Data Unit-k ODUflex of flexible bandwidth, the service bandwidth of ODUflex;
Message sending unit, be used for sending Indication message to the adjacent light communicator, described Indication message carries in described flow parameter and the described distributing slot resources unit time interval resource information of determining, makes the interconnection that described adjacent light communicator is set up related ODUflex signal according to the described flow parameter in the described Indication message that receives and described time interval resource information;
The unit is set up in interconnection, is used for the interconnection of setting up related ODUflex signal according to described time interval resource information.
18. optical communication apparatus according to claim 17 is characterized in that:
The bit rate tolerance limit that also comprises ODUflex in the described flow parameter;
Described distributing slot resources unit specifically according to the bit rate tolerance limit of service bandwidth and the ODUflex of the ODUflex in the described flow parameter, is the traffic assignments time interval resource of ODUflex.
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| PCT/CN2010/075283 WO2011023040A1 (en) | 2009-08-25 | 2010-07-20 | Information processing method, optical communication device and optical communication system in optical network |
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| CN102857837B (en) * | 2011-06-30 | 2017-11-07 | 中兴通讯股份有限公司 | Wavelength tag coding method, processing method and the node of flexible grid optical |
| WO2012149760A1 (en) * | 2011-09-22 | 2012-11-08 | 华为技术有限公司 | Method and device for configuring time slot resources |
| CN103079119A (en) * | 2011-10-26 | 2013-05-01 | 中兴通讯股份有限公司 | Wavelength resource encoding method, wavelength resource processing method and node for flexible grid optical network |
| CN104348754B (en) * | 2013-07-26 | 2019-08-23 | 中兴通讯股份有限公司 | A kind of bandwidth allocation methods and device of optical burst ring net |
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| JP2007096822A (en) * | 2005-09-29 | 2007-04-12 | Fujitsu Ltd | Signal multiplxer and its stuff control method |
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| CN1472893A (en) * | 2002-07-30 | 2004-02-04 | 深圳市中兴通讯股份有限公司上海第二 | Manual business arrangement of connection oriented in optical transmission network |
| WO2008046322A1 (en) * | 2006-10-16 | 2008-04-24 | Huawei Technologies Co., Ltd. | Distributed pce-based system and architecture in a multi-layer network |
| CN101179351A (en) * | 2006-11-07 | 2008-05-14 | 中兴通讯股份有限公司 | Dynamic allocation method for space/time division cross time slot resource of synchronous digital hierarchy equipment |
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