CN102439921A - Time slot resource configuration method and device - Google Patents
Time slot resource configuration method and device Download PDFInfo
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- CN102439921A CN102439921A CN2011800023440A CN201180002344A CN102439921A CN 102439921 A CN102439921 A CN 102439921A CN 2011800023440 A CN2011800023440 A CN 2011800023440A CN 201180002344 A CN201180002344 A CN 201180002344A CN 102439921 A CN102439921 A CN 102439921A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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Abstract
The invention discloses a time slot resource configuration method and a device applied to the time slot resource configuration on links between nodes in a light transmitting network. In particularly, in the method, link information searching information is used to search the link types of links in the light transmitting network and the free time slot resource, the link information searching information carries the business bandwidth and link type of an ODUflex businesses; wherein, the link type is a link type needing the most time slot number for transmitting the ODUflex businesses in the link types between a first node and a current node, after the current node receives the time slot resource reservation message sent by a next node, in the link between the current node to the next node, a corresponding number of free time slot resource is reserved fro the ODUflex businesses, thereby finishing the time slot resource configuration process in the light transmitting network automatically, having a high configuration efficiency, and being not easy to mistake.
Description
Technical field
The application relates to the optical communication technique field, particularly relates to a kind of time interval resource collocation method and device.
Background technology
A kind of new light tranmission techniques that OTN (Optical Transport Network, optical transfer network) technology is can be realized flexible dispatching and management that big capacity is professional, has become the mainstream technology of Backbone Transport Network.
Remove the Container Type with fixed-bandwidth of initial definition among the OTN, outside ODUl (Optical Channel Data Unit 1, Optical Channel Data Unit-k 1), ODU2, ODU3 and the ODU4; Also defined a kind of new Container Type, i.e. ODUflex (flexible ODU, the ODU of flexible bandwidth); The bandwidth of ODUflex is unfixing; Can carry the service signal of various bandwidth granularity, be more suitable for transmitting the customer information of various different bandwidth demands, and save bandwidth resources.ODUflex is a unit with the time slot of 1.25Gbps bandwidth, is multiplexed on other ODU chain of higher rate level, and like ODU2, ODU3, ODU4, the ODUflex of different bandwidth demand need take different numbers of timeslots in the ODU Linktype.Yet the time slot bandwidth of other ODU of different rates level is not exclusively the same, such as: the time slot bandwidth of ODU2 is 1.249384632Gbps; The time slot bandwidth of ODU3 is 1.254678635Gbps; The time slot bandwidth of ODU4 is 1.301683217Gbps, therefore, and when utilizing ODUflex to transmit specific bandwidth demand professional; The number of time slot that needs on the link that dissimilar ODU forms is different; But, when dynamically adjusting the bandwidth that ODUflex connects if desired, then need guarantee this ODUflex the number of time slot that takies on all links of process identical.
At present; When needs are dynamically adjusted the bandwidth that ODUflex connects, adopt artificial through webmaster to transmit ODUflex professional the number of time slot of each bar link of process unify configuration, connect; Guarantee that ODUflex is connected the number of time slot unanimity that takies on each bar link; This unified collocation method need be configured the node one by one in each bar link, and allocative efficiency is low, and easy error.
Summary of the invention
For solving the problems of the technologies described above, the application embodiment provides a kind of time interval resource collocation method and device, and to realize carrying out automatically between each node among the OTN configuration of time interval resource, technical scheme is following:
Based on one side of the present invention, a kind of time interval resource collocation method is disclosed, comprising:
Present node receives from first link information of a last node and collects message; Said first link information is collected the professional service bandwidth and first Linktype of Optical Channel Data Unit-k ODUflex that message is carried flexible bandwidth, the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype headed by said first Linktype between node to the present node;
Present node is according to the Linktype of link between said service bandwidth, present node and next node; And said first Linktype; Confirm second Linktype, said second Linktype is the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype between said first node to the said next node;
Present node sends second link information to said next node and collects message, and said second link information is collected message and carried said service bandwidth and said second Linktype;
Present node receives the time interval resource reserving message from said next node; Said time interval resource reserving message carries the number of time slot information that needs reservation, and is the professional time interval resource of reserving respective number of said ODUflex on the link between present node and said next node.
Preferably; Said present node sends second link information collection message to said next node and is specially: when the idle number of time slot of link between present node and said next node was not less than the number of time slot of said second Linktype needs, present node sent second link information to said next node and collects message.
Preferably, said definite second Linktype specifically comprises:
According to said service bandwidth and said first Linktype, calculate first number of time slot, node to present node transmits the number of time slot of said ODUflex service needed headed by this first number of time slot;
Linktype according to link between said service bandwidth and present node and said next node calculates second number of time slot, and this second number of time slot is the professional required maximum number of time slot of transmission ODUflex between present node and said next node;
More said first number of time slot and said second number of time slot, and the number of time slot link corresponding type that numerical value is maximum is confirmed as second Linktype.
Preferably, said definite second Linktype specifically comprises:
More said first Linktype, and the Linktype of link between present node and next node, the Linktype that the transmission rate rank is lower is confirmed as second Linktype.
Preferably, when the link between said present node and the said next node was a link, the Linktype of link was the Linktype of this link between present node and the said next node.
Preferably; When present node and said next node are respectively adjacent in the adjacent control domain two territory boundary nodes; The Linktype of link does between present node and the said next node, the Linktype of the User Network Interface UNI between present node and said next node;
When present node and said next node are respectively two territory boundary nodes in the same control domain; And when comprising multilink in the said control domain, the Linktype between present node and the said next node is the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the said control domain.
Preferably, above-mentioned time interval resource collocation method also comprises:
The idle number of time slot of link when between present node and said next node when transmitting the number of time slot of said ODUflex service needed less than said second Linktype, sends the notice message of routing again to first node.
Based on another aspect of the present invention, a kind of time interval resource inking device is disclosed, comprising:
The message sink unit; Be used to receive first link information collection message that a time slot device for allocating resources sends; This first link information is collected message and is carried the professional service bandwidth of ODUflex, and the maximum Linktype of number of time slot that transmits said ODUflex service needed in the Linktype between first time interval resource device to the current time slots resource devices;
Second Linktype is confirmed the unit; Be used for according to said service bandwidth, first Linktype; And the Linktype of link between current time slots device for allocating resources and next the time interval resource inking device; Confirm second Linktype, said second Linktype is the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype between first time interval resource inking device to said next time interval resource inking device;
Message sending unit is used for a downward time slot device for allocating resources and sends second link information collection message, and said second link information is collected message and carried said service bandwidth and said second Linktype;
Time interval resource is reserved the unit; Be used to receive time interval resource reserving message from said next time interval resource inking device; Said time interval resource reserving message carries the number of time slot information that needs reservation, and is the professional time interval resource of reserving respective number of said ODUflex on the link between current time slots device for allocating resources and said next time interval resource inking device.
Preferably; Said message sending unit is further used for: when the idle number of time slot of link is not less than the number of time slot of said second Linktype needs between current time slots device for allocating resources and next time interval resource inking device, sends second link information to said next time interval resource inking device and collect message.
Preferably, said second Linktype confirms that the unit comprises:
First number of time slot is confirmed subelement; Be used for according to said service bandwidth and said first Linktype; Calculate first number of time slot, this first number of time slot is maximum number of time slot of the said ODUflex service needed of link transmission in first time interval resource inking device to the current time slots device for allocating resources;
Second number of time slot is confirmed subelement; Be used for Linktype according to link between said service bandwidth and current time slots device for allocating resources and said next time interval resource inking device; Calculate second number of time slot, this second number of time slot is the number of time slot of the said ODUflex service needed of transmission in the link between current time slots device for allocating resources and next time interval resource inking device;
Comparing unit is used to contrast said first number of time slot and said second number of time slot, and the number of time slot link corresponding type that numerical value is maximum is confirmed as second Linktype.
Preferably; Said second Linktype confirms that the unit is further used for; More said first Linktype, and the Linktype of link between current time slots device for allocating resources and next time interval resource inking device, the Linktype that the transmission rate rank is lower is confirmed as second Linktype.
Preferably, above-mentioned time interval resource inking device also comprises:
Notification unit; The idle number of time slot that is used for link when between current time slots device for allocating resources and next time interval resource inking device; During the number of time slot that needs less than said second Linktype, send the notice message of routing again to first time interval resource inking device.
Technical scheme by above the application embodiment provides is visible; Collect message through link information between each node in the optical transport network; Collect Linktype and idle time interval resource on each bar link; Needed maximum number of time slot link corresponding types when link information being collected Linktype in the message transmission ODUflex is professional in the link of node to present node headed by upgrading, and the idle number of time slot between present node and next node is collected message with new link information and is sent to next node when satisfying said maximum number of time slot; Up to end-node; And after receiving the time interval resource reserving message, being the professional idle time interval resource of reserving respective number of ODUflex, the node in the optical transport network utilizes link information to collect the process that message is accomplished the time interval resource configuration automatically; Allocative efficiency is high, and is difficult for makeing mistakes.
Description of drawings
In order to be illustrated more clearly in the application embodiment 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; Obviously, the accompanying drawing in describing below only is some embodiment that put down in writing among the application, 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 a kind of time interval resource collocation method of the application embodiment;
Fig. 2 is the flow chart of the another kind of time interval resource collocation method of the application embodiment;
Fig. 3 is a kind of concrete exemplary plot that comprises the optical transport network of a control domain;
Fig. 4 is the flow chart of the time interval resource collocation method of the corresponding optical transport network of Fig. 3;
Fig. 5 is a kind of concrete exemplary plot that comprises the optical transport network of a plurality of control domains;
Fig. 6 is the structural representation of a kind of time interval resource inking device of the application embodiment;
Fig. 7 confirms the structural representation of unit for a kind of second Linktype of the application embodiment.
Embodiment
In order to make those skilled in the art person understand the technical scheme among the application better; To combine the accompanying drawing among the application embodiment below; Technical scheme among the application embodiment is carried out clear, intactly description; Obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all should belong to the scope of the application's protection.
See also Fig. 1, show the flow chart of a kind of method embodiment of the application, this method is applied to transmit the Optical Channel Data Unit-k ODUflex business of flexible bandwidth and comprise among the OTN of a plurality of nodes, mainly may further comprise the steps:
S101; Present node receives from first link information of a last node and collects message; Said first link information is collected message and is carried said the ODUflex professional service bandwidth and first Linktype, the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype headed by said first Linktype between node to the present node.
Concrete; Said first link information is collected message and is carried: this three category information of type of service, service bandwidth and first Linktype; Said type of service is that ODUflex, service bandwidth are the professional bandwidth of said ODUflex; Said first Linktype is the link between first node to this present node, the maximum Linktype of transmission ODUflex service needed number of time slot.But, when headed by the last node of this present node during node, the Linktype of link between node and this present node headed by said first Linktype.
Said first link information is collected message, can realize that this signaling message specifically can be PATH message or Notify message through signaling message; Under single control domain situation; Can use said PATH message to realize, under the situation of a plurality of control domains, can use Notify message.Said signaling message carries the RNO object (Resource Negotiation Object, resource coordination object) of a redetermination.
The RNO object carries the Linktype information of said link; Specifically comprise; Link Type and two fields of Available TS Number, wherein, the Link the type field is represented Linktype; Available TS Number field is represented the idle number of time slot in the link, and Available TS Number field is an Optional Field.
When headed by the last node of present node during node, said first node is along confirm good path in advance, and the Linktype that obtains link between first node and present node generates first link information as first Linktype and collects message and send to next node; Wherein, the mode of confirming transmission path in advance can have multiple, such as: realize through distribution route computing unit or centralized path computation unit or Routing Protocol.
S102, present node be according to said service bandwidth, first Linktype, and the Linktype of link between present node and next node, confirms second Linktype.
Concrete, present node can calculate the professional needed number of time slot of this Linktype transmission ODUflex according to ODUflex professional service bandwidth and Linktype.Such as, the professional service bandwidth of ODUflex is 2.5G bps, and Linktype is ODU3, and this Linktype time slot corresponding bandwidth is 1.254678635Gbps, then need on the ODU3 link, distribute 2 time interval resources.
Present node is according to the Linktype of link between said service bandwidth, first Linktype and present node and next node; Can determine the Linktype of link between said first Linktype and present node and next node; Need the maximum Linktype of number of time slot in these two Linktypes, and with this Linktype as second Linktype.
S103, present node sends second link information to said next node and collects message, and said second link information is collected message and is carried said service bandwidth and said second Linktype.
Concrete, after present node is determined second Linktype, generate second link information and collect message, and send to next node.
S104; Present node receives the time interval resource reserving message from next node; Said time interval resource reserving message carries the number of time slot information that needs reservation, is the professional time interval resource of reserving respective number of said ODUflex on the link between present node and the said next node.
Concrete; S101-S103 is carried out in circulation; Up to end-node, at this moment, confirm from maximum number of time slot of first node to end-node transmission ODUflex service needed by end-node; And return the time interval resource reserving message to first node direction by end-node, this time interval resource reserving message carries the number of time slot information reserved of needing.When present node receives the time interval resource reserving message from next node; And when the idle time interval resource of link is not less than the number of time slot of said need reservation between present node and next node, on the link between present node and the next node the professional time interval resource of reserving respective number of said ODUflex.
The time interval resource method that present embodiment provides; Collect Linktype and idle number of time slot on each professional bar link of message collection transmission OUDflex through sending link information, determine the professional required maximum number of time slot of transmission ODUflex, thereby accomplish the process that time interval resource disposes automatically; And can guarantee that ODUflex connects; The number of time slot that on each bar link, takies is consistent, and allocative efficiency is high, and is difficult for makeing mistakes.
Need to prove that said second Linktype that the application embodiment provides maybe be identical with said first Linktype, also maybe be different, should be determined on a case-by-case basis:
During the Linktype of link needs between number of time slot that said first Linktype needs is greater than present node and next node number of time slot, the types value of said second Linktype is identical with the types value of the said first kind;
When the number of time slot that needs when said first Linktype was not more than the number of time slot that the Linktype of link between present node and next node needs, said second Linktype was the Linktype of link between present node and next node.
See also Fig. 2, show the flow chart of another kind of time interval resource collocation method, this method comprises:
S201, present node receive from first link information of a last node and collect message, and said first link information is collected message and carried the ODUflex professional service bandwidth and first Linktype.
Concrete, the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype headed by said first Linktype between node to the present node.
S202, present node are according to the Linktype of link between said service bandwidth, present node and next node, and said first Linktype, confirm second Linktype.
Concrete, second Linktype is the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype between said first node to the said next node.
S203, present node judge whether the idle number of time slot of link is not less than the number of time slot that said second Linktype needs between present node and next node, if then carry out S204; Otherwise carry out S207.
S204, present node sends second link information to said next node and collects message, and this second link information is collected message and is carried said service bandwidth and said second Linktype.
S205 judges whether said next node is end-node, if not, then returns and carries out S101, if then carry out S206.
S206, end-node is returned the time interval resource reserving message step by step to first node direction.
During practical implementation; After end-node receives first link information collection message from a last node; Collect first Linktype and the service bandwidth that message is carried according to this first link information, finally determine the professional required number of time slot of transmission ODUflex, and return the time interval resource reserving message to first node direction hop-by-hop; Each node is the professional time interval resource of reserving respective number of ODUflex after receiving the time interval resource reserving message.
S207 returns the notice message of routing again to first node.
In the time interval resource collocation method that present embodiment provides; Send before link information collects message to next node at present node, when the idle time interval resource between present node and the next node satisfies the number of time slot of link transmission ODUflex service needed of said second Linktype, send second link information to next node and collect message; Otherwise; Return the notice message of routing again to first node, thereby, the efficient of time interval resource collocation method further improved.
The process of confirming second Linktype in the foregoing description specifically can realize through two kinds of methods.
A kind of definite second Linktype specifically may further comprise the steps:
A according to said service bandwidth and said first Linktype, calculates first number of time slot, and node to present node transmits the number of time slot of said ODUflex service needed headed by this first number of time slot.
B, the Linktype according to link between said service bandwidth and present node and said next node calculates second number of time slot, and this second number of time slot is the professional required maximum number of time slot of transmission ODUflex between present node and said next node;
C, more said first number of time slot and said second number of time slot, and the number of time slot link corresponding type that numerical value is maximum is confirmed as second Linktype.
The another kind of method of confirming second Linktype is specially: more said first Linktype, and the Linktype of link between present node and next node, the Linktype that the transmission rate rank is lower is confirmed as second Linktype.
Above-mentioned method embodiment can be applied among the OTN that includes a control domain, can also be applied among the OTN that includes a plurality of network domains, and each control domain comprises multilink, is the territory boundary node with other control domain nodes in communication in each control domain.
Respectively single domain situation and multiple domain situation are described with two concrete instances below.
See also Fig. 3, show the structural representation of the OTN that comprises a control domain.
OTN comprises A, B, C, four nodes of D, node headed by the node A wherein, and Node B, C are intermediate node, node D is an end-node, and, suppose:
Linktype between node A and the B is ODU2, and idle number of time slot is 5;
Linktype between Node B and the C is ODU3, and idle number of time slot is 30;
Linktype between node C and the D is ODU4, and idle number of time slot is 78.
See also Fig. 4, the time interval resource collocation method flow chart for single network domains shown in Figure 4 specifically may further comprise the steps:
S401, node A collects Linktype and the idle number of time slot that message is collected the AB link through link information, when the idle number of time slot on the AB link satisfies the number of time slot of transmission ODUflex service needed, sends first link information to Node B and collects message.
Concrete, said link information is collected message and is carried signal type, service bandwidth and Linktype, specifically can realize through PATH message or Notify message.Said first link information is collected message and is carried the Linktype of AB link and the idle number of time slot on the AB link.
Said type of service is ODUflex, and said service bandwidth is 2.5Gbps, and Linktype is the Linktype of AB link, i.e. ODU2.
The A node is according to time slot bandwidth and the professional service bandwidth of ODUflex of the Linktype ODU2 of AB link, and calculating the professional required number of time slot of transmission ODUflex is 3.
If the A node is determined the idle number of time slot in the AB link,, then first link information is collected message and send to Node B greater than the professional required number of time slot 3 of transmission ODUflex.
Otherwise, if the idle number of time slot in the AB link during less than said number of time slot 3, then notifies first node to reselect the professional path of transmission ODUflex.
S402; Node B is according to the Linktype of said service bandwidth, AB link and the Linktype of BC link; Determining in above-mentioned two kinds of Linktypes the maximum Linktype of transmission ODUflex service needed number of time slot is second Linktype, and this second Linktype is collected the Linktype in the message as second link information.
Concrete; When the ODUflex business was transmitted on the AB link, the number of time slot that needs was 3, when the ODUflex business is transmitted on the BC link; The number of time slot that needs is 2; The maximum number of time slot that then transmit the ODUflex service needed are 3, and at this moment, second Linktype is the Linktype-ODU2 of AB link.
S403 when Node B is judged idle number of time slot on the link BC and is not less than maximum number of time slot, collects message with said second link information and sends to node C.
Concrete, the idle number of time slot on the BC link is 30, and greater than number of time slot 3 at most, the link information that then will carry Linktype and be ODU2 is collected message and sent to node C.
In addition, when the idle number of time slot on the BC link during, return the notice message of reselecting the professional path of the said ODUflex of transmission to first node A less than maximum number of time slot.After node A receives this notice message, reselect the professional path of transmission ODUflex.
S404; Node C receives from first link information of Node B and collects message; Collect the service bandwidth and first Linktype in the message according to said first link information, and the Linktype of CD link, confirm second Linktype; Said second Linktype is the maximum Linktype of transmission ODUflex service needed number of time slot in above-mentioned two Linktypes, and this second Linktype is collected the Linktype in the message as second link information.
Concrete; In the present embodiment; It is that second link information that the Node B among the step S503 is sent is collected message that first link information in this step is collected message, and said first Linktype is that second link information that said Node B is sent is collected the second Linktype ODU2 that message is carried.
In the present embodiment; First Linktype is ODU2, and the Linktype of CD link is ODU4, when then node C determines the ODUflex business of transmission 2.5Gbps bandwidth on ODU2 and ODU4; Needing the maximum Linktype of number of time slot is ODU2, and promptly determining second Linktype is ODU2.
The second Linktype ODU2 is collected the Linktype that message is carried as second link information, the link information collection message that will send as node C institute.
When S405, node C judge number of time slot on the CD link and be not less than said maximum number of time slot, said second link information is collected message send to node D.
In the present embodiment, node C knows that the idle number of time slot on the CD link is 78, greater than said maximum number of time slot 3, then second link information is collected message and sends to node D.
In addition, when the idle number of time slot on the CD link during, return the notice message of routing again to node A less than maximum number of time slot.After node A receives the notice message of routing again, reselect the professional path of transmission ODUflex.
S406, node D determine the professional number of time slot that finally needs reservation of transmission ODUflex after receiving first link information collection message from node C, and return RESV step by step to the node of node A direction.
Concrete; Node D is according to said service bandwidth and Linktype; Finally determine maximum number of time slot of transmission ODUflex service needed from node A to node D; And returning RESV step by step to the node of node A direction, this RESV carries the said number of time slot reserved of needing, and specifically can be RESV message.
Node A, B, C be the professional time interval resource of reserving respective number of ODUflex, and then it are professional on the link between node A, B, C, D, to transmit ODUflex after receiving RESV.
More than be the time interval resource collocation method of single network domains,, the time interval resource collocation method in many control domains be described below in conjunction with Fig. 4.
Fig. 5 is the structural representation that comprises the OTN of a plurality of network domains; This OTN comprises: three network domains; Wherein node A is the professional first node of transmission ODUflex, and node H is an end-node, and Node B, C are two territory boundary nodes of control domain network1; Node D, E are two territory boundary nodes of control domain network2, and node F, G are two territory boundary nodes of control domain network3.
Concrete, the idiographic flow of the time interval resource collocation method of the pairing OTN of Fig. 5 is following:
The processing procedure of node A is following:
Obtain UNI (User Network Interface between node A, B; User Network Interface) Linktype and idle number of time slot; And according to this Linktype and the professional service bandwidth of ODUflex; Calculate the professional required number of time slot of transmission ODUflex; If when said idle number of time slot is not less than the professional required number of time slot of the said ODUflex of transmission, first link information is collected message send to Node B, said first link information is collected the i.e. idle number of time slot of this link of Linktype that message carries link between said AB; Otherwise it is professional to reselect paths transmission ODUflex.
The processing procedure of Node B is following:
After a, Node B received first link information collection message, the Linktype of determining between Node B and node C was the maximum Linktype of transmission ODUflex service needed number of time slot among the entire n etwork1.
Concrete, the process of confirming maximum number of time slot of transmission ODUflex service needed among the network1 is similar with the resource method flow of single network domains shown in Figure 3, repeats no more here.
B, Node B are according to the Linktype between said service bandwidth, said first Linktype, Node B and node C; Determine second Linktype, this second Linktype is to the maximum Linktype of the said ODUflex service needed number of time slot of transmission between node C at node A.
C, Node B are judged the idle number of time slot among the network1; In the time of can satisfying the maximum number of time slot of transmission ODUflex service needed; Second link information is collected message send to node C, said second link information is collected message and is carried said service bandwidth and said second Linktype.
Concrete, if when Node B is judged idle number of time slot among the network1 and is not less than the maximum number of time slot of in network1 transmission ODUflex service needed, second link information is collected the node C that message sends to downstream; Otherwise, return the notice message of routing again to first node A.
The processing procedure of node C is following:
A1, receive collect message from Node B first link information after; This first link information is collected message and is carried the service bandwidth and first Linktype; And according to said service bandwidth, first Linktype; And the Linktype of the UNI between the said node C, D, determine second Linktype, this second Linktype is the maximum Linktype of transmission ODUflex service needed number of time slot from node A to node D.
Concrete, first link information collection message is that second link information that Node B is sent is collected message in this step, first Linktype i.e. this second link information is collected second Linktype in message.
B1, node C judge the idle number of time slot of UNI between node C, the D; Be not less than said maximum number of time slot; Then second link information is collected message and send to node D, this second link information is collected message and is carried second Linktype that said service bandwidth and node C determine.
Concrete, when the idle number of time slot of the UNI between node C, the D during less than said maximum number of time slot, node C returns the notice message of routing again to node A.
Node D, F repeat the comparison of Node B and the process of the Linktype that renewal link information collection message is carried, and node E, G repeat the comparison of node C and the process of the Linktype that renewal link information collection message is carried.
The processing procedure of end-node H is following:
After node H receives the link information collection message from node G; Collect service bandwidth and the Linktype that message is carried according to this link information; Determine the number of time slot that needs reservation; And return the time interval resource reserving message of carrying the said number of time slot of need reserving step by step to the direction of node A, this time interval resource reserving message is specially RESV message.
Each node among the OTN is the professional time interval resource of reserving respective number of ODUflex after receiving the time interval resource reserving message.
Need to prove that the implementation that the link information among the implementation of the link information collection message in the present embodiment and the embodiment of Fig. 1 correspondence is collected message is identical.
Corresponding to top method embodiment, the application also provides a kind of time interval resource inking device.
See also Fig. 6, this device comprises: message sink unit 610, second Linktype are confirmed unit 620, message sending unit 630 and time slot resource reservation unit 640, wherein:
Second Linktype is confirmed unit 620; Be used for according to said service bandwidth and Linktype; And the Linktype of link between current time slots device for allocating resources and next the time interval resource inking device; Confirm second Linktype, said second Linktype is the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype between first time interval resource inking device to said next time interval resource inking device.
Concrete; This second Linktype is confirmed unit 630; Can pass through more said first Linktype, and the Linktype of link between current time slots device for allocating resources and next time interval resource inking device, the Linktype that the transmission rate rank is lower is confirmed as second Linktype.
Preferably; This message sending unit 630 is used for; When the idle number of time slot of link is not less than the number of time slot of said second Linktype needs between current time slots device for allocating resources and next time interval resource inking device, sends second link information to said next time interval resource inking device and collect message.
Time interval resource is reserved unit 640; After being used to receive the RESV that carries the number of time slot that needs reservation; Be the professional idle time interval resource of reserving respective number of said ODUflex, and be the professional time interval resource of reserving respective number of said ODUflex on the link between current time slots device for allocating resources and said next time interval resource inking device.
Preferably; Referring to Fig. 6; Said time interval resource inking device also comprises: the notification unit 650 that links to each other with message sending unit 630, and this notification unit is used for the idle number of time slot of link when between current time slots device for allocating resources and next time interval resource inking device; During less than maximum number of time slot of the said ODUflex service needed of the link transmission of said second Linktype, send the notice message of routing again to first time interval resource inking device.
The time interval resource inking device that present embodiment provides; Collect Linktype and the idle number of time slot that message is collected each link through link information, thereby determine the professional required maximum number of time slot of transmission ODUflex, finally accomplish the time interval resource layoutprocedure; This device guarantees that ODUflex business shared number of time slot in each link is consistent; Can dynamically adjust the bandwidth of ODUflex, and this device utilizes signaling message to accomplish the time interval resource layoutprocedure automatically; Allocative efficiency is high, and is difficult for makeing mistakes.
To introduce second Linktype among the corresponding device embodiment of Fig. 6 below and confirm the concrete structure of unit; As shown in Figure 7; This second Linktype confirms that the unit comprises: first number of time slot confirms that subelement 621, second number of time slot confirm subelement 622 and comparing unit 623, wherein:
First number of time slot is confirmed subelement 621, according to said service bandwidth and said first Linktype, calculates first number of time slot.
Second number of time slot is confirmed subelement 622, is used for the Linktype according to link between said service bandwidth and current time slots device for allocating resources and said next time interval resource inking device, calculates second number of time slot.
Comparing unit 623 is used to contrast said first number of time slot and said second number of time slot, and the number of time slot link corresponding type that numerical value is maximum is confirmed as second Linktype.
For above-mentioned method embodiment; For simple description; So it all is expressed as a series of combination of actions, but it will be recognized by those skilled in the art that the present invention does not receive the restriction of described sequence of movement; Because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art should be understood that also the embodiment described in the specification all belongs to preferred embodiment, and related action might not be that the present invention is necessary.
For above-mentioned device embodiment, because it is basically similar in appearance to method embodiment, so describe fairly simplely, relevant part gets final product referring to the part explanation of method embodiment.Device embodiment described above only is schematic; Wherein said unit as the separating component explanation can or can not be physically to separate also; The parts that show as the unit can be or can not be physical locations also; Promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can realize the purpose of present embodiment scheme according to the needs selection some or all of module wherein of reality.Those of ordinary skills promptly can understand and implement under the situation of not paying creative work.
Need to prove; In this article; Relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint relation or the order that has any this reality between these entities or the operation.And; Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability; Thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements; But also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Under the situation that do not having much more more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises said key element and also have other identical element.
The above only is the application's a embodiment; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the application's protection range.
Claims (12)
1. a time interval resource collocation method is characterized in that, comprising:
Present node receives from first link information of a last node and collects message; Said first link information is collected the professional service bandwidth and first Linktype of Optical Channel Data Unit-k ODUflex that message is carried flexible bandwidth, the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype headed by said first Linktype between node to the present node;
Present node is according to the Linktype of link between said service bandwidth, present node and next node; And said first Linktype; Confirm second Linktype, said second Linktype is the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype between said first node to the said next node;
Present node sends second link information to said next node and collects message, and said second link information is collected message and carried said service bandwidth and said second Linktype;
Present node receives the time interval resource reserving message from said next node; Said time interval resource reserving message carries the number of time slot information that needs reservation, and is the professional time interval resource of reserving respective number of said ODUflex on the link between present node and said next node.
2. method according to claim 1; It is characterized in that; Said present node sends second link information collection message to said next node and is specially: when the idle number of time slot of link between present node and said next node was not less than the number of time slot of said second Linktype needs, present node sent second link information to said next node and collects message.
3. method according to claim 1 is characterized in that, said definite second Linktype specifically comprises:
According to said service bandwidth and said first Linktype, calculate first number of time slot, node to present node transmits the number of time slot of said ODUflex service needed headed by this first number of time slot;
Linktype according to link between said service bandwidth and present node and said next node calculates second number of time slot, and this second number of time slot is the professional required maximum number of time slot of transmission ODUflex between present node and said next node;
More said first number of time slot and said second number of time slot, and the number of time slot link corresponding type that numerical value is maximum is confirmed as second Linktype.
4. method according to claim 1 is characterized in that, said definite second Linktype specifically comprises:
More said first Linktype, and the Linktype of link between present node and next node, the Linktype that the transmission rate rank is lower is confirmed as second Linktype.
5. method according to claim 1 is characterized in that, when the link between said present node and the said next node was a link, the Linktype of link was the Linktype of this link between present node and the said next node.
6. method according to claim 1; It is characterized in that; When present node and said next node are respectively adjacent in the adjacent control domain two territory boundary nodes; The Linktype of link does between present node and the said next node, the Linktype of the User Network Interface UNI between present node and said next node;
When present node and said next node are respectively two territory boundary nodes in the same control domain; And when comprising multilink in the said control domain, the Linktype between present node and the said next node is the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the said control domain.
7. according to each described method of claim 1-6, it is characterized in that, also comprise:
The idle number of time slot of link when between present node and said next node when transmitting the number of time slot of said ODUflex service needed less than said second Linktype, sends the notice message of routing again to first node.
8. a time interval resource inking device is characterized in that, comprising:
The message sink unit; Be used to receive first link information collection message that a time slot device for allocating resources sends; This first link information is collected message and is carried the professional service bandwidth of ODUflex, and the maximum Linktype of number of time slot that transmits said ODUflex service needed in the Linktype between first time interval resource device to the current time slots resource devices;
Second Linktype is confirmed the unit; Be used for according to said service bandwidth, first Linktype; And the Linktype of link between current time slots device for allocating resources and next the time interval resource inking device; Confirm second Linktype, said second Linktype is the maximum Linktype of the said ODUflex service needed number of time slot of transmission in the Linktype between first time interval resource inking device to said next time interval resource inking device;
Message sending unit is used for a downward time slot device for allocating resources and sends second link information collection message, and said second link information is collected message and carried said service bandwidth and said second Linktype;
Time interval resource is reserved the unit; Be used to receive time interval resource reserving message from said next time interval resource inking device; Said time interval resource reserving message carries the number of time slot information that needs reservation, and is the professional time interval resource of reserving respective number of said ODUflex on the link between current time slots device for allocating resources and said next time interval resource inking device.
9. device according to claim 8; It is characterized in that; Said message sending unit is further used for: when the idle number of time slot of link is not less than the number of time slot of said second Linktype needs between current time slots device for allocating resources and next time interval resource inking device, sends second link information to said next time interval resource inking device and collect message.
10. device according to claim 8 is characterized in that, said second Linktype confirms that the unit comprises:
First number of time slot is confirmed subelement; Be used for according to said service bandwidth and said first Linktype; Calculate first number of time slot, this first number of time slot is maximum number of time slot of the said ODUflex service needed of link transmission in first time interval resource inking device to the current time slots device for allocating resources;
Second number of time slot is confirmed subelement; Be used for Linktype according to link between said service bandwidth and current time slots device for allocating resources and said next time interval resource inking device; Calculate second number of time slot, this second number of time slot is the number of time slot of the said ODUflex service needed of transmission in the link between current time slots device for allocating resources and next time interval resource inking device;
Comparing unit is used to contrast said first number of time slot and said second number of time slot, and the number of time slot link corresponding type that numerical value is maximum is confirmed as second Linktype.
11. device according to claim 8; It is characterized in that; Said second Linktype confirms that the unit is further used for; More said first Linktype, and the Linktype of link between current time slots device for allocating resources and next time interval resource inking device, the Linktype that the transmission rate rank is lower is confirmed as second Linktype.
12. device according to claim 8 is characterized in that, also comprises:
Notification unit; The idle number of time slot that is used for link when between current time slots device for allocating resources and next time interval resource inking device; During the number of time slot that needs less than said second Linktype, send the notice message of routing again to first time interval resource inking device.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2011/080009 WO2012149760A1 (en) | 2011-09-22 | 2011-09-22 | Method and device for configuring time slot resources |
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| CN102439921A true CN102439921A (en) | 2012-05-02 |
| CN102439921B CN102439921B (en) | 2014-02-19 |
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| WO2019237904A1 (en) * | 2018-06-12 | 2019-12-19 | 华为技术有限公司 | Resource reservation method and apparatus |
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| CN108390744A (en) * | 2018-02-11 | 2018-08-10 | 广东美的厨房电器制造有限公司 | Data transmission method, device, electronic equipment, program product and storage medium |
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| WO2019237904A1 (en) * | 2018-06-12 | 2019-12-19 | 华为技术有限公司 | Resource reservation method and apparatus |
| CN110601999A (en) * | 2018-06-12 | 2019-12-20 | 华为技术有限公司 | Method and device for reserving resources |
| CN110601999B (en) * | 2018-06-12 | 2022-03-04 | 华为技术有限公司 | Method and device for reserving resources |
| CN112787924A (en) * | 2020-09-28 | 2021-05-11 | 中兴通讯股份有限公司 | Time slot cross path configuration method, computer device and readable medium |
| CN112787924B (en) * | 2020-09-28 | 2022-02-18 | 中兴通讯股份有限公司 | Time slot cross path configuration method, computer device and readable medium |
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| CN102439921B (en) | 2014-02-19 |
| WO2012149760A1 (en) | 2012-11-08 |
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