CN103098416A - Protection resource allocation method, device and system - Google Patents
Protection resource allocation method, device and system Download PDFInfo
- Publication number
- CN103098416A CN103098416A CN2011800018211A CN201180001821A CN103098416A CN 103098416 A CN103098416 A CN 103098416A CN 2011800018211 A CN2011800018211 A CN 2011800018211A CN 201180001821 A CN201180001821 A CN 201180001821A CN 103098416 A CN103098416 A CN 103098416A
- Authority
- CN
- China
- Prior art keywords
- business
- link
- node
- protection resource
- preset protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
Abstract
An embodiment of the present invention discloses a protection resource allocation method. A first node and a second node have a first link therebetween; both a protection path of a first service and a protection path of a second service pass through the first link. The method comprises: a first node saving preset protection resources of a first service on a first link and preset protection resources of a second service on the first link; the first node receiving a protection switching request of the first service and occupying the preset protection resources of the first service on the first link; and if the preset protection resources of the second service on the first link and the preset protection resources of the first service on the first link share a common part, the first node reallocating the preset resources of the second service on the first link, and saving the reallocated preset protection resources of the second service on the first link. The first node timely allocates the present resources of the protection path according to the real-time usage of the protection resources in the first link, thereby making full use of the protection resources on the first link.
Description
One kind protection resource allocation methods, device and system technical field
The present invention relates to communication technical field, more particularly to a kind of protection resource allocation methods, device and system.Background technology
Transmit network and connection is provided, for data to be sent into another node from a node.Network may break down, and such as optical fiber link failure caused by reason by being dug disconnected, node power down, after network breaks down, the connection in network can fail, and cause data-transmission interruptions.In order to recover connection as early as possible after network failure, the break period of data transfer is reduced, it is necessary to provide protection/Restoration Mechanism for the connection in network.
Common protection mechanism has 1+1 protection.1+1 protection, configuration work connection and protection connection, data are simultaneously in two connection transmission.Under normal circumstances, destination node from selecting the good connection of a bars to receive data between the two.Work connecting fault after, then from protection connection receive data.The protection connection of 1+1 protection is special, that is, is only a work connection and provides protection.Therefore, the resume speed of 1+1 protection is fast, but the resource taken is more., can be using shared protection in order to improve resource utilization.The mode of shared protection, different Protection paths can share protection resource, therefore improve the resource utilization of network.
In existing shared protection technique, the protection resource of every Protection path is fixed.Because protection resource can be shared to a plurality of Protection path, therefore after protection resource is taken by certain Protection path, even if available free protection resource can use, other Protection paths for sharing the protection resource are lost protective capability.The content of the invention
, can be fully using protection resource the embodiments of the invention provide one kind protection resource allocation methods, device and system.
Resource allocation methods are protected the embodiments of the invention provide one kind, between first node and Section Point
Including the first link, the Protection path of the Protection path of the first business and the second business passes through the first link, including：
First node preserves preset protection resource of first business on the first link, preset protection resource of second business on the first link；
First node receives the pretection switch request of the first business, takes preset protection resource of first business on the first link；
If there is shared part in preset protection resource of preset protection resource and first business of second business on the first link on the first link; first node redistributes preset protection resource of second business on the first link, preserves preset protection resource of the second business redistributed on the first link.
Resource allocation node is protected the embodiments of the invention provide one kind; the protection resource allocation node is first node; including the first link between first node and Section Point, the Protection path of the Protection path of the first business and the second business passes through the first link, and first node includes：
Storage unit, for preserving preset protection resource of first business on the first link, preset protection resource of second business on the first link；
Pretection switch unit, the pretection switch for receiving the first business is asked, and takes preset protection resource of first business on the first link；
Protect resource allocation unit; if there is shared part for preset protection resource of preset protection resource and first business of second business on the first link on the first link; preset protection resource of second business on the first link is redistributed, preset protection resource of the second business redistributed on the first link is preserved.
Resource allocation system, including first node and Section Point are protected the embodiments of the invention provide one kind, including the first link between first node and Section Point, the Protection path of the Protection path of the first business and the second business passes through the first link, including：
First node is used to preserve preset protection resource of first business on the first link; preset protection resource of second business on the first link; receive the pretection switch request of the first business; preset protection resource of first business on the first link is taken, if preset protection resource of second business on the first link
There is shared part with preset protection resource of first business on the first link; redistribute preset protection resource of second business on the first link; preserve preset protection resource of the second business redistributed on the first link, preset protection resource notification Section Point of the second business that first node is redistributed on the first link；
Section Point is used to preserve preset protection resource of first business on the first link; preset protection resource of second business on the first link; the preset protection resource of the second business that first node redistributes on the first link is received, preset protection resource of the second business redistributed on the first link is preserved.
In the embodiment of the present invention, first node preserves preset protection resource of first business on the first link, preset protection resource of second business on the first link, first node receives the pretection switch request of the first business, take preset protection resource of first business on the first link, if there is shared part in preset protection resource of preset protection resource and first business of second business on the first link on the first link, first node redistributes preset protection resource of second business on the first link, preserve preset protection resource of the second business redistributed on the first link.First node can be according to the real-time service condition that resource is protected in the first link, in the case of shared resource is occupied, the preset protection resource of Protection path is redistributed in time, can be fully using the protection resource on the first link, pretection switch fails caused by preventing resource contention, there is provided and be effectively protected for shared protection business, in addition, the preset protection resource of Protection path can be upgraded in time, when needing to switch, quickly pretection switch can be provided using the preset protection resource of Protection path for shared protection business, save the time of pretection switch.Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, cylinder will be made to the required accompanying drawing used in embodiment or description of the prior art below singly to introduce, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of protection resource allocation methods in the embodiment of the present invention；
Fig. 2 is network diagram in the embodiment of the present invention；
Fig. 3 is a kind of structural representation of protection resource allocation node in the embodiment of the present invention；
Fig. 4 is a kind of schematic diagram of protection resource allocation system in the embodiment of the present invention.Embodiment
The embodiment to the present invention is illustrated below in conjunction with the accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of protection resource allocation methods in the embodiment of the present invention, in the present embodiment, includes the first link between first node and Section Point, and the Protection path of the Protection path of the first business and the second business passes through the first link.
5101, first node preserves preset protection resource of first business on the first link, preset protection resource of second business on the first link.
Preset protection resource of first business on the first link can be that the first node of the Protection path of the first business is distributed and notifies first node; can be that first node is voluntarily distributed and preserved; can also be that webmaster distributes and notifies first node; it is of course also possible to by other node distributions and notify first node.
Preset protection resource of second business on the first link can be that the first node of the Protection path of the second business is distributed and notifies first node; can be that first node is voluntarily distributed and preserved; can also be that webmaster distributes and notifies first node; it is of course also possible to by other node distributions and notify first node.
5102, first node receives pretection switch request, takes preset protection resource of first business on the first link.
First node receives the pretection switch request of the first business from Section Point；Or, first node receives the pretection switch request of the first business of another adjacent node on the Protection path from the first business, or
First node receives the pretection switch request from webmaster.
5103; if there is shared part in preset protection resource of preset protection resource and first business of second business on the first link on the first link; preset protection resource of second business on the first link is redistributed, preset protection resource of the second business redistributed on the first link is preserved.
In the embodiment of the present invention, it can also include：
Section Point preserves preset protection resource of first business on the first link, preset protection resource of second business on the first link；
The first node redistributes preset protection resource of second business on the first link, and the second business that preservation first node is redistributed also includes after the preset protection resource on the first link：
Preset protection resource notification Section Point of the second business that first node redistributes first node on the first link so that preset protection resource of the second business that Section Point preservation first node is redistributed on the first link.
In the embodiment of the present invention, it can also include：
First node preserves protection resource pool of first business on the first link, protection resource pool of second business on the first link；
The first node redistributes preset protection resource of second business on the first link, specifically includes：
First node redistributes preset protection resource of second business on the first link according to protection resource pool of second business on the first link.
In the embodiment of the present invention, it can also include：
The first node receives the pretection switch request of the first business, specifically includes：
First node receives the pretection switch request of the first business from Section Point；Or, first node receives the pretection switch request of the first business of another adjacent node on the Protection path from the first business.
In the embodiment of the present invention, it can also include：
The first node also includes before receiving the pretection switch request of the first business：
Configuration first node is host node, and configuration Section Point is that preset protection resource of the second business that the preservation is redistributed on the first link is specifically included from node：Preset protection resource of the second business that preservation first node is redistributed on the first link.
In the embodiment of the present invention, it can also include：
First node receives the Section Point from Section Point and redistributes preset protection resource of second business on the first link; if the node serial number of first node is bigger than Section Point, the preset protection resource for preserving the second business redistributed on the first link is specifically included：Preset protection resource of the second business that preservation first node is redistributed on the first link, if the node serial number of first node is smaller than Section Point, the preset protection resource for preserving the second business redistributed on the first link is specifically included：Preset protection resource of the second business that preservation Section Point is redistributed on the first link；Or,
First node receives the Section Point from Section Point and redistributes preset protection resource of second business on the first link; if the node serial number of first node is smaller than Section Point, the preset protection resource for preserving the second business redistributed on the first link is specifically included：Preset protection resource of the second business that preservation first node is redistributed on the first link, if the node serial number of first node is bigger than Section Point, the preset protection resource for preserving the second business redistributed on the first link is specifically included：Preset protection resource of the second business that preservation Section Point is redistributed on the first link.
In the embodiment of the present invention, it can also include：The protection resource is that time slot protects resource or bandwidth protection resource.
In the embodiment of the present invention, it can also include：
First link also includes for the second sidelinks methods described of first node：
First node preserves first side preset protection resource of first business in first node; preset protection resource of first business on the first link is second side preset protection resource of first business in first node; the first node receives the pretection switch request of the first business; preset protection resource of first business on the first link is taken, is specifically included：
Configure first side preset protection resource bearing first business of first business in first node; configure second side preset protection resource bearing first business of first business in first node; interconnection is configured, preset protection resource of first business on the first link is taken.
First node is the end node of the first business, and first business is in the Trail termination resource that the preset protection resource in the first side of first node is the first business.
In the embodiment of the present invention, first node preserves preset protection resource of first business on the first link, preset protection resource of second business on the first link, first node receives the pretection switch request of the first business, take preset protection resource of first business on the first link, if there is shared part in preset protection resource of preset protection resource and first business of second business on the first link on the first link, first node redistributes preset protection resource of second business on the first link, preserve preset protection resource of the second business redistributed on the first link.First node can be according to the real-time service condition that resource is protected in the first link, in the case of shared resource is occupied, the preset protection resource of Protection path is redistributed in time, can be fully using the protection resource on the first link, pretection switch fails caused by preventing resource contention, there is provided and be effectively protected for shared protection business, in addition, the preset protection resource of Protection path can be upgraded in time, when needing to switch, quickly pretection switch can be provided using the preset protection resource of Protection path for shared protection business, save the time of pretection switch.
The embodiment of the present invention can apply in circuit network, in circuit network, and each node typically connects the circuit in different links using circuit cross-overs, for example, optical transfer network（Optical Transport Network, OTN Optical Channel Data Unit-k (Optical channel Data Unit) are used in network, ODU) circuit cross-overs are connected, SDH (uses virtual container in Synchronous Digital Hierarchy, SDH networks（Virtual container, VC) circuit cross-overs connection, illustrated below by taking the 0DU business in OTN networks as an example, the VC business used in SDH network is similar.
In 0TN networks, the 0DU of a variety of rate levels is defined, labeled as ODUj, wherein j value is different, represents different rate levels.For example, ODU0 speed is probably lGbps, 0DU1 speed is probably 2.5Gbps, and 0DU2 speed is probably lOGbps, and 0DU3 speed is probably 40Gbps, and 0DU4 speed is probably 100Gbps.The ODUj (hereinafter referred to as low order ODU) of multiple low rate ranks can be placed on ODUk (hereinafter referred to as high-order ODU) (j of a high-speed rank<K) transmitted in.Now, an ODUk is divided into multiple time slots, and each time slot big 4 had both been 1.25Gbps, and multiple ODUj are multiplexed into 0DUk by taking ODUk one or more time slots.Illustrate that the least unit that low order ODU resource pool is shared in guard method, protection resource pool is a time slot below.A part of time slot is divided in link as protection resource pool, can be shared to the Protection path of different 0DU business.In the embodiment of the present invention, protection resource is time interval resource,
In other embodiments, protection resource can be ODU resources, VC resources, bandwidth resources or other resources.Fig. 2 is the network diagram in the embodiment of the present invention.
As shown in Fig. 2 including seven nodes of A, B, C, D, E, F, G, eight links of AB, BC, AD, CE, DE, DF, EG, FG, node realizes low order ODU interconnection, and link includes two kinds of Linktypes：0DU2 links and 0DU3 links.0DU2 links the total speed of link be lOGbps, be divided into 8 1.25 Gbps time slot, time-gap number is l# -8#;ODU3 links the total speed of link be 40Gbps, be divided into 32 1.25 Gbps time slot, time-gap number is the 32# of 1# mono-.
Below by taking Fig. 2 network as an example, illustrate a kind of protection resource allocation methods, actual network is likely more complexity, but the principle of protection resource allocation is identical.
For the sake of cylinder list, totally two business in the present embodiment：Business 1 and business 2, business 1 is from interface 1 to interface 5, and type of service is for 0DU1, it is necessary to take two time slots, and business 2 is from interface 16 to interface 19, and type of service is ODU0, it is necessary to take 1 time slot.The operating path and Protection path of business 1 and business 2, which can be planned, to be drawn.
Program results can include：Time interval resource in node, link and link that the operating path of business 1 passes through；Preset protection resource of the node, link, the protection resource pool in link and business 1 that the Protection path of business 1 passes through in protection resource pool；Time interval resource in node, link and link that the operating path of business 2 passes through；Preset protection resource of the node, link, the protection resource pool in link and business 1 that the Protection path of business 2 passes through in protection resource pool.Time interval resource wherein in protection resource pool can be shared to the Protection path of a plurality of business.
Planning algorithm can be realized with Constraint Shortest Path First (constraint shortest path first, CSPF) algorithm.CSPF algorithm can calculate the path for meeting setting constraint, for example, calculate operating path, the Protection path for obtaining A-C, and meet constraints of the signal type for 0DU1, operating path and Protection path separation；It is similar to calculate operating path, the Protection path for obtaining F-H, and meet constraints of the signal type for ODU0, operating path and Protection path separation.Because the operating path and Protection path of two business are separated, their Protection path can share time interval resource in the part of coincidence, therefore can be industry in the preset protection resource 2#/3# time slots of Protection path distribution of the interface 9 of interface 8/ for business 1
The preset protection resource 2# time slots of Protection path distribution of business 2.Assuming that the program results of the present embodiment is when the interface 9 of interface 8/ also has 4#/5#：
The operating path of business 1：1-interface of interface 2 _ (1 # time slots, 2# time slots）3 _ interface of-interface 4 _ (5# time slots, 6# time slots）20-interface of-interface 5.
The Protection path of business 1：1-interface of interface 6-(preset protection resource：2# time slots, 5# time slots；Protect resource pool：2# time slots, 5# time slots）7-interface of-interface 8-(preset protection resource：2# time slots, 3# time slots；Protect resource pool：2# time slots, 3# time slots, 4# time slots, 5# time slots）(the preset protection resource of 9-interface of-interface 10：4# time slots, 5# time slots）11-interface of-interface 5.
The operating path of business 2：16-interface of interface 17-(1# time slots）18-interface of-interface 19.The Protection path of business 2：16-interface of interface 14-(preset protection resource：2# time slots；Protect resource pool：2# time slots）12-interface of-interface 8-(preset protection resource：2# time slots；Protect resource pool：2# time slots, 3# time slots, 4# time slots, 5# time slots）9-interface of-interface 1 3-(preset protection resource：4# time slots）15-interface of-interface 19.
Cook up after business 1 and business 2, it is necessary to according to the operating path of each business of program results configuration, and Protection path, specifically include：
On the node that the operating path of business 1 passes through, configure interconnection, take the time interval resource for each link that program results is indicated, the operating path of the business 1 obtained according to planning, 0DU1 interconnection is configured in 4, B, C node, take the 1# time slots and 2# time slots of A-B links, the 5# time slots and 6# time slots of B-C links；On the node that the operating path of business 2 passes through, configuration interconnection, the time interval resource for each link that occupancy program results is indicated, i.e., the operating path of the business 2 obtained according to planning,, H nodes configure ODU0 interconnection, take F-H links 1# time slots.
On the node that the Protection path of business 1 passes through, protection path information is preserved in advance, but does not configure interconnection, that is, is not take up time interval resource, and the information of preservation can include the information such as Protection path numbering, preset protection resource, protection resource pool；On the node that the Protection path of business 2 passes through, protection path information is preserved in advance, but does not configure interconnection, that is, is not take up time interval resource, and the information of preservation can include protection road
The information such as footpath numbering, preset protection resource, protection resource pool.
For the Protection path of business 1, protection path information is preserved in node A, D, E, C.For non-end node, Protection path numbering, signal type are preserved, whether end node, the preset protection resource of the link of line side 1, the link link of line side 1 protect resource pool, the preset protection resource of the link link of line side 2, the protection resource pool of the link link of line side 2.For end node, preserve Protection path numbering, signal type, whether end node, Trail termination resource, the preset protection resource of the link link of line side 2, the protection resource pool of the link link of line side 2.
For the Protection path of business 2, protection path information is preserved in node F, D, E, H.For non-end node, Protection path numbering, signal type are preserved, whether end node, the preset protection resource of the link of line side 1, the link link of line side 1 protect resource pool, the preset protection resource of the link link of line side 2, the protection resource pool of the link link of line side 2.For end node, preserve Protection path numbering, signal type, whether end node, Trail termination resource, the preset protection resource of the link link of line side 2, the protection resource pool of the link link of line side 2.In node A, C, D, E, F, the information that H is preserved is as shown in table 1- tables 6, illustrated by taking node D as an example, node D preserves the protection path information of business 1 and business 2, for business 1, Protection path numbering is 1, signal type is 0DU1, it is not the end node of business 1, what the Trail termination of line side 1/ was preserved is the resource of the link of line side 1, specially interface index is 7, preset protection resource is 2# and 5#, protection resource pool is 2# and 5#, what line side 2 was preserved is the resource of the link of line side 2, specially interface index is 8, preset protection resource is 2# and 3#, protection resource pool is 2#, 3#, 4# and 5#, certainly, the preservation of the protection resource of this both sides can be set according to demand, the resource of the link of line side 2 can be for example preserved in the Trail termination of line side 1/, what is preserved in line side 2 is the resource of the link of line side 1.For business 2; Protection path numbering is 2, and signal type is ODU0, is not the end node of business 2; what the Trail termination of line side 1/ was preserved is the resource of the link of line side 1; specially interface index is 12, and preset protection resource is 2#, and protection resource pool is 2#; what line side 2 was preserved is the resource of the link of line side 2; specially interface index is 8, and preset protection resource is 2#, and protection resource pool is 2#, 3#, 4# and 5#.
For end node, illustrated by taking node A as an example, Protection path numbering is 1, and signal type is 0DU1, be the end node of business 1, what the Trail termination of line side 1/ was preserved is the resource of the link of line side 1, is specially
Interface index is 1, and preset protection resource is 1# and 2#, and protection resource pool is 1# and 2#, and what line side 2 was preserved is the resource of the link of line side 2, and specially interface index is 6, and preset protection resource is 2# and 5#, and protection resource pool is 2# and 5#.The Trail termination resource that the Trail termination of line side 1/ is preserved, is the resource of the terminal of business 1.Table 1:Node A relaying configuration information
Table 2:Node C relaying configuration information
Table 3:Node D relaying configuration information
Table 4:Node E relaying configuration information
The tables 5 of 2 ODUO no 922,3,4,5 13 44:Node F relaying configuration information
Table 6:Node H relaying configuration information
Under normal condition, the data of business 1 and business 2 utilize its respective operating path transmission.
In this implementation; the operating path of business 2 breaks down; such as link between F-H is interrupted; APS agreement is then utilized, the Protection path of business 2 takes preset protection resource, sets up ODU0 interconnections; and from Protection path sending and receiving data; it is of course also possible to business is switched into Protection path from operating path because of other reasonses, such as the demand of the network planning.Detailed pretection switch process can be as follows：
1st, the end points F of business 2 detects the working path failure of business 2, the data-transmission interruptions of business 2.
2nd, the end points F trigger protection switching actions of business 2, look into the table 5 of this node preservation, and the interface into the link of line side 2 sends specified services in APS message, message and numbered（2), request activation（Preset protection resource is taken, sets up and intersects）Protection path 2.
3rd, node D receives APS message from interface 12; know to activate Protection path 2; look into the table 3 of this node preservation; learn the protection resource of Protection path 2; because node D is not the end node of business 2; therefore the preset protection resource in line side 1, the preset protection resource in line side 2 are respectively configured as carrying ODU0 signals, and above-mentioned two ODU0 signal cross is connected, that is, take business 2 in the preset of link D-E
Resource is protected, to another interface（Interface 8) forward specified services in APS message, message to number, request activation Protection path 2.
In the present embodiment; protection resource is the time interval resource of link; resource number in i.e. preset protection resource and protection resource pool is the resource number of time slot; then configuration interconnection is into 0DU bearer services by the protection resource distribution in two line sides; 0DU protection resources are obtained, and by two 0DU interconnections.
In other embodiments, if protection resource is the 0DU resources of link, i.e., the resource number in preset protection resource and protection resource pool is 0DU resource number, then it is by the protection resource interconnection in two line sides to configure interconnection.In other embodiments, if protection resource is VC resources, configuration interconnection is to configure the interconnection that VC protects resource.
4th, node D, which tables look-up, 3 learns; Protection path 2 needs to take the 2# time slots in interface 8; and 2# time slots are also the preset protection resource of Protection path 1 simultaneously, therefore, node D protection resource pools of Protection path 1 from interface 8 reselect two time slots（3#, 4#) as the preset protection resource of Protection path 1, reconfigure table 3, and to the sending time slots assignment messages of interface 8, specified services are numbered in message（1), preset protection resource（ 3#, 4# )；
5th, node E receives APS message from interface 9; know to activate Protection path 2; look into the table 4 of this node preservation; learn the protection resource of Protection path 2; because node E is not the end node of business 2; therefore the preset protection resource in line side 1, the preset protection resource in line side 2 are respectively configured as carrying ODU0 signals; and connect above-mentioned two ODU0 signal cross; preset protection resource of the business 2 in link D-E is taken, to another interface（Interface 13) forward specified services numbering request activation Protection path 2 in APS message, message;
6th, node E receives the time slot assignment message of Protection path 1 from interface 9, using the preset protection resource specified in message as Protection path 1 interface 9 preset protection resource, configure in table 4.
7th, node H receives APS message from interface 15; know to activate Protection path 2; look into the table 6 of this node preservation; learn the protection resource of Protection path 2; because node E is the end node of business 2; therefore it is carrying ODU0 signals by the preset protection resource distribution in line side, and is sent to Protection path from interface
19 0DUQ signals, receive 0DUQ signals from Protection path and send interface 19 to；
8th, node H returns to specified services in APS message, message to interface 15 and numbered（2), request activation Protection path 2;
9th, node E receives APS message from interface 13, because Protection path 2 has been activated, therefore to another interface（Interface 9) forwarding APS message；
10, node D receives APS message from interface 8, because Protection path 2 has been activated, therefore to another interface（2) interface 1 forwards APS message；
11, node F receives APS message from interface 14; table look-up 5; it is carrying ODU0 signals that the preset protection resource distribution in resource 2, which will be protected; and send the ODU0 signals from interface 16 to Protection path; 0DUQ signals are received from Protection path and send interface 16 to; so far, the data transfer of business 2 is recovered.
In above-mentioned steps 4 and step 6, node D redistributes preset protection resource of the business 1 in link F-H, then node E is notified, the preset protection resource of business 1 that node D redistributes in link F-H is preserved in node D and node E, in other embodiments, may also node E redistribute preset protection resource of the business 1 in link F-H, then node D is notified, the preset protection resource of business 1 that node E redistributes in link F-H is preserved in node D and node E, may also node D and node E all carried out redistributing preset protection resource of the business 1 in link F-H, now need to provide a kind of method with so that the preset protection resource consistence that node D and node are finally preserved.
Two end nodes F, H of the operating path of business 2 may be detected simultaneously by failure; trigger protection is switched simultaneously; now node D and node E may redistribute preset protection resource of the business 1 in link F-H simultaneously, and to opposite end sending time slots assignment messages.Node D may be different with the preset protection resource that node E is redistributed, for example, node D distributes # 3/#4 time slots, node E distributes #4/#5 time slots, then two ends distribution is inconsistent.The present embodiment provides two methods and ensures that node D is consistent in link F-H preset protection money with the business 1 that node E is finally preserved.
Mode one, both link ends node is respectively configured as host node and from node in advance, host node is responsible for redistributing preset protection resource, and notifies from node.For example, for the link between node D and node E, node D is configured into host node; node E is configured to from node; when needing to redistribute preset protection resource for the link between D-E, distribution is responsible for by node D, and node ￡ is notified using time slot assignment message.
Mode two, node serial number, the big configuration take-effective of node serial number are carried in time slot assignment message.For example, node D node serial number is less than node E node serial number, then when to opposite end time slot assignment message occurs for node D/ nodes E simultaneously, node D is received after the time slot assignment message of node E transmissions, the time slot allocative decision in application message.
The preset protection resource redistributed between interior joint of embodiment of the present invention D and node E is transmitted by time slot assignment message, and time slot assignment message can be realized using the expense of 0DU links, can also be realized using the band outer control passage between node.0DU links can transmit 0DU frames, 0DU frame definitions expense and quiet lotus.Time slot assignment message is transmitted using 0DU expenses, for example, 0DU GCC1 expenses can be used, by time slot assignment message（Message content includes Protection path numbering, the time-gap number of preset protection resource）Encapsulated using HDLC, be sent to opposite end.Time slot assignment message band outer control passage, such as when ethernet link is realized, time slot assignment message can be encapsulated into I P bags, and be sent to opposite end by ethernet link.
In the embodiment of the present invention, the preset protection resource of Protection path can be upgraded in time, when needing to switch, and quickly can be provided pretection switch for shared protection business using the preset protection resource of Protection path, be saved the time of pretection switch.
As shown in Fig. 3; for a kind of protection resource allocation node provided in an embodiment of the present invention; the protection resource allocation node is first node; include the first link between first node and Section Point; the Protection path of first business and the Protection path of the second business pass through the first link; characterized in that, first node includes：
Storage unit 301, for preserving preset protection resource of first business on the first link, preset protection resource of second business on the first link；
Pretection switch unit 302, the pretection switch for receiving the first business is asked, and takes preset protection resource of first business on the first link；
Protect resource allocation unit 303; if there is shared part for preset protection resource of preset protection resource and first business of second business on the first link on the first link; preset protection resource of second business on the first link is redistributed, preset protection resource of the second business redistributed on the first link is preserved.
Section Point preserves preset protection resource of first business on the first link, and preset protection resource of second business on the first link, first node also includes：
Notification unit, for the preset protection resource notification Section Point of the second business for redistributing first node on the first link so that Section Point preserves the preset protection resource of the second business that first node redistributes on the first link.
Storage unit 301 is additionally operable to preserve protection resource pool of first business on the first link, protection resource pool of second business on the first link；
Resource allocation unit 303 is protected specifically for redistributing preset protection resource of second business on the first link according to protection resource pool of second business on the first link.
In the embodiment of the present invention, in addition to：
Pretection switch unit 302 is specifically included：Pretection switch for receiving the first business from Section Point is asked；Or,
Pretection switch unit 302 is specifically included：For the pretection switch request for the first business for receiving another adjacent node on the Protection path from the first business.
In the embodiment of the present invention, in addition to：
Dispensing unit, for configuring first node for host node；
Protection resource allocation unit 303 is specifically for preserving preset protection resource of the second business redistributed of first node on the first link.
In the embodiment of the present invention, in addition to：
Protection resource allocation unit 303 redistributes preset protection resource of second business on the first link specifically for receiving the Section Point from Section Point; if the node serial number of first node is bigger than Section Point; preset protection resource of the second business that then preservation first node is redistributed on the first link; if the node serial number of first node is smaller than Section Point, preset protection resource of the second business that preservation Section Point is redistributed on the first link；Or,
Protection resource allocation unit 303 redistributes preset protection resource of second business on the first link specifically for receiving the Section Point from Section Point, if the node serial number of first node compares second section
Point is small; preset protection resource of the second business that then preservation first node is redistributed on the first link; if the node serial number of first node is bigger than Section Point, preset protection resource of the second business that preservation Section Point is redistributed on the first link.
In the embodiment of the present invention, in addition to：
First link is the second sidelinks of first node, including：
Storage unit is additionally operable to preserve first side preset protection resource of first business in first node, and preset protection resource of first business on the first link is second side preset protection resource of first business in first node；
Pretection switch unit is specifically for configuring first side preset protection resource bearing first business of first business in first node; configure second side preset protection resource bearing first business of first business in first node; interconnection is configured, preset protection resource of first business on the first link is taken.
In the embodiment of the present invention; first node can be according to the real-time service condition that resource is protected in the first link; in the case of shared resource is occupied; the preset protection resource of Protection path is redistributed in time; can be fully using the protection resource on the first link; pretection switch fails caused by preventing resource contention, provides and is effectively protected for shared protection business.
As shown in Figure 4; one kind protection resource allocation system, including first node 401 and Section Point 402, include the first link between first node and Section Point; the Protection path of first business and the Protection path of the second business pass through the first link, including：
First node 401 is used to preserve preset protection resource of first business on the first link, preset protection resource of second business on the first link, receive the pretection switch request of the first business, take preset protection resource of first business on the first link, if there is shared part in preset protection resource of preset protection resource and first business of second business on the first link on the first link, redistribute preset protection resource of second business on the first link, preserve preset protection resource of the second business redistributed on the first link, preset protection resource notification Section Point of the second business that first node is redistributed on the first link；
Section Point 402 is used to preserve preset protection resource of first business on the first link, the second industry
It is engaged in preset protection resource on the first link, receives the preset protection resource of the second business that first node redistributes on the first link, preserve preset protection resource of the second business redistributed on the first link.
In the embodiment of the present invention; first node can be according to the real-time service condition that resource is protected in the first link; in the case of shared resource is occupied; the preset protection resource of Protection path is redistributed in time; can be fully using the protection resource on the first link; pretection switch fails caused by preventing resource contention, provides and is effectively protected for shared protection business.
Through the above description of the embodiments, those skilled in the art can be understood that the embodiment of the present invention can add the mode of required general hardware platform to realize by software, naturally it is also possible to be implemented by hardware.Understood based on such, the part that the technical scheme of the embodiment of the present invention substantially contributes to prior art in other words can be embodied in the form of software product, the computer software product is stored in a storage medium, including some instructions are to cause a computer equipment（Can be personal computer, server, or network equipment etc.）Perform the method described in each embodiment of the invention.
Disclosed above is only presently preferred embodiments of the present invention, can not limit the interest field of the present invention, therefore the equivalent variations made according to the claims in the present invention with this certainly, still belongs to the scope that the present invention is covered.
Claims (1)
1st, a kind of protection resource allocation methods, including the first link between first node and Section Point, the Protection path of the Protection path of the first business and the second business passes through the first link, it is characterised in that including：First node preserves preset protection resource of first business on the first link, preset protection resource of second business on the first link；
First node receives the pretection switch request of the first business, takes preset protection resource of first business on the first link；
If there is shared part in preset protection resource of preset protection resource and first business of second business on the first link on the first link; first node redistributes preset protection resource of second business on the first link, preserves preset protection resource of the second business redistributed on the first link.
2nd, protection resource allocation methods according to claim 1, it is characterised in that methods described also includes：
Section Point preserves preset protection resource of first business on the first link, preset protection resource of second business on the first link；
The first node redistributes preset protection resource of second business on the first link, and the second business that preservation first node is redistributed also includes after the preset protection resource on the first link：
Preset protection resource notification Section Point of the second business that first node redistributes first node on the first link so that preset protection resource of the second business that Section Point preservation first node is redistributed on the first link.
3rd, protection resource allocation methods according to claim 1, it is characterised in that methods described also includes：
First node preserves protection resource pool of first business on the first link, protection resource pool of second business on the first link；
The first node redistributes preset protection resource of second business on the first link, specifically includes：First node redistributes preset protection resource of second business on the first link according to protection resource pool of second business on the first link.
4th, protection resource allocation methods according to claim 1, it is characterised in that the first node receives the pretection switch request of the first business, specifically includes：
First node receives the pretection switch request of the first business from Section Point；Or,
First node receives the pretection switch request of the first business of another adjacent node on the Protection path from the first business.
5th, protection resource allocation methods according to claim 1, it is characterised in that the first node also includes before receiving the pretection switch request of the first business：
Configuration first node is host node, and configuration Section Point is that preset protection resource of the second business that the preservation is redistributed on the first link is specifically included from node：Preset protection resource of the second business that preservation first node is redistributed on the first link.
6th, protection resource allocation methods according to claim 2, it is characterised in that methods described also includes：
First node receives the Section Point from Section Point and redistributes preset protection resource of second business on the first link; if the node serial number of first node is bigger than Section Point, the preset protection resource for preserving the second business redistributed on the first link is specifically included：Preset protection resource of the second business that preservation first node is redistributed on the first link, if the node serial number of first node is smaller than Section Point, the preset protection resource for preserving the second business redistributed on the first link is specifically included：Preset protection resource of the second business that preservation Section Point is redistributed on the first link；Or,
First node receives the Section Point from Section Point and redistributes preset protection resource of second business on the first link; if the node serial number of first node is smaller than Section Point, the preset protection resource for preserving the second business redistributed on the first link is specifically included：Preset protection resource of the second business that preservation first node is redistributed on the first link, if the node serial number of first node is bigger than Section Point, the preset protection resource for preserving the second business redistributed on the first link is specifically included：Preset protection resource of the second business that preservation Section Point is redistributed on the first link.
7th, protection resource allocation methods according to claim 6, it is characterised in that first node, which is received before the Section Point from Section Point redistributes preset protection resource of second business on the first link, also to be included：Section Point receives the pretection switch request of the first business, takes preset protection resource of first business on the first link.
8th, according to any described protection resource allocation methods of claim 11, it is characterised in that including：The protection resource is that time slot protects resource or bandwidth protection resource.
9th, protection resource allocation methods according to claim 1, it is characterised in that the first link is the second sidelinks of first node, methods described also includes：
First node preserves first side preset protection resource of first business in first node; preset protection resource of first business on the first link is second side preset protection resource of first business in first node; the first node receives the pretection switch request of the first business; preset protection resource of first business on the first link is taken, is specifically included：
Configure first side preset protection resource bearing first business of first business in first node; configure second side preset protection resource bearing first business of first business in first node; interconnection is configured, preset protection resource of first business on the first link is taken.
10th, protection resource allocation methods according to claim 9, it is characterised in that first node is the end node of the first business, and first business is in the Trail termination resource that the preset protection resource in the first side of first node is the first business.
11st, a kind of protection resource allocation node; the protection resource allocation node is first node, including the first link between first node and Section Point, and the Protection path of the Protection path of the first business and the second business passes through the first link; characterized in that, first node includes：
Storage unit, for preserving preset protection resource of first business on the first link, preset protection resource of second business on the first link；
Pretection switch unit, the pretection switch for receiving the first business is asked, and takes preset protection resource of first business on the first link；
Protect resource allocation unit; if there is shared part for preset protection resource of preset protection resource and first business of second business on the first link on the first link; preset protection resource of second business on the first link is redistributed, preset protection resource of the second business redistributed on the first link is preserved.
12nd, node according to claim 11, it is characterised in that Section Point preserves preset protection resource of first business on the first link, preset protection resource of second business on the first link, first node also includes：
Notification unit, for the preset protection resource notification Section Point of the second business for redistributing first node on the first link so that Section Point preserves the preset protection resource of the second business that first node redistributes on the first link.
13rd, node according to claim 11, it is characterised in that including：
Storage unit is additionally operable to preserve protection resource pool of first business on the first link, and the second business is the
Protection resource pool on one link；
Resource allocation unit is protected specifically for redistributing preset protection resource of second business on the first link according to protection resource pool of second business on the first link.
14th, node according to claim 11, it is characterised in that including：
Pretection switch unit is specifically included：Pretection switch for receiving the first business from Section Point is asked；Or,
Pretection switch unit is specifically included：For the pretection switch request for the first business for receiving another adjacent node on the Protection path from the first business.
15th, node according to claim 11, it is characterised in that also include：
Dispensing unit, for configuring first node for host node；
Protection resource allocation unit is specifically for preserving preset protection resource of the second business redistributed of first node on the first link.
16th, node according to claim 11, it is characterised in that including：
Protection resource allocation unit redistributes preset protection resource of second business on the first link specifically for receiving the Section Point from Section Point; if the node serial number of first node is bigger than Section Point; preset protection resource of the second business that then preservation first node is redistributed on the first link; if the node serial number of first node is smaller than Section Point, preset protection resource of the second business that preservation Section Point is redistributed on the first link；Or,
Protection resource allocation unit redistributes preset protection resource of second business on the first link specifically for receiving the Section Point from Section Point; if the node serial number of first node is smaller than Section Point; preset protection resource of the second business that then preservation first node is redistributed on the first link; if the node serial number of first node is bigger than Section Point, preset protection resource of the second business that preservation Section Point is redistributed on the first link.
17th, node according to claim 11, it is characterised in that the first link is the second sidelinks of first node, including：
Storage unit is additionally operable to preserve first side preset protection resource of first business in first node, and preset protection resource of first business on the first link is second side preset protection resource of first business in first node；
First side preset protection resource of the pretection switch unit specifically for the first business of configuration in first node is held
The first business is carried, the first business of configuration configures interconnection, take preset protection resource of first business on the first link in the preset protection business of resource bearing first in the second side of first node.
18th, a kind of protection resource allocation system, including first node and Section Point, including the first link between first node and Section Point, the Protection path of the Protection path of the first business and the second business passes through the first link, it is characterised in that including：
First node is used to preserve preset protection resource of first business on the first link, preset protection resource of second business on the first link, receive the pretection switch request of the first business, take preset protection resource of first business on the first link, if there is shared part in preset protection resource of preset protection resource and first business of second business on the first link on the first link, redistribute preset protection resource of second business on the first link, preserve preset protection resource of the second business redistributed on the first link, preset protection resource notification Section Point of the second business that first node is redistributed on the first link；Section Point is used to preserve preset protection resource of first business on the first link; preset protection resource of second business on the first link; the preset protection resource of the second business that first node redistributes on the first link is received, preset protection resource of the second business redistributed on the first link is preserved.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/079162 WO2013029248A1 (en) | 2011-08-31 | 2011-08-31 | Protection resource allocation method, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103098416A true CN103098416A (en) | 2013-05-08 |
| CN103098416B CN103098416B (en) | 2016-08-03 |
Family
ID=47755206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180001821.1A Active CN103098416B (en) | 2011-08-31 | 2011-08-31 | A kind of protection resource allocation methods, device and system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103098416B (en) |
| WO (1) | WO2013029248A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018053716A1 (en) * | 2016-09-21 | 2018-03-29 | 华为技术有限公司 | Protection switching method and node |
| CN110447294A (en) * | 2017-03-23 | 2019-11-12 | 英特尔公司 | Vehicle to vehicle (V2V) sidelinks communicate in prioritized messages and resource selection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626527A (en) * | 2009-08-19 | 2010-01-13 | 烽火通信科技股份有限公司 | Recoverable shared restoration method for optimizing spare routing by automatic switched optical network (ASON) |
| CN101969382A (en) * | 2010-09-25 | 2011-02-09 | 中兴通讯股份有限公司 | Method and device for sharing service protection in mesh network |
| CN102143065A (en) * | 2011-02-09 | 2011-08-03 | 华为技术有限公司 | Fault protection method and equipment |
-
2011
- 2011-08-31 WO PCT/CN2011/079162 patent/WO2013029248A1/en active Application Filing
- 2011-08-31 CN CN201180001821.1A patent/CN103098416B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626527A (en) * | 2009-08-19 | 2010-01-13 | 烽火通信科技股份有限公司 | Recoverable shared restoration method for optimizing spare routing by automatic switched optical network (ASON) |
| CN101969382A (en) * | 2010-09-25 | 2011-02-09 | 中兴通讯股份有限公司 | Method and device for sharing service protection in mesh network |
| CN102143065A (en) * | 2011-02-09 | 2011-08-03 | 华为技术有限公司 | Fault protection method and equipment |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018053716A1 (en) * | 2016-09-21 | 2018-03-29 | 华为技术有限公司 | Protection switching method and node |
| CN109155740A (en) * | 2016-09-21 | 2019-01-04 | 华为技术有限公司 | Pretection switch method and node |
| EP3499813A4 (en) * | 2016-09-21 | 2019-06-19 | Huawei Technologies Co., Ltd. | Protection switching method and node |
| US10735090B2 (en) | 2016-09-21 | 2020-08-04 | Huawei Technologies Co., Ltd. | Protection switching method and node |
| US11251863B2 (en) | 2016-09-21 | 2022-02-15 | Huawei Technologies Co., Ltd. | Protection switching method and node |
| CN110447294A (en) * | 2017-03-23 | 2019-11-12 | 英特尔公司 | Vehicle to vehicle (V2V) sidelinks communicate in prioritized messages and resource selection |
| US11553503B2 (en) | 2017-03-23 | 2023-01-10 | Apple Inc. | Prioritized messaging and resource selection in vehicle-to-vehicle (V2V) sidelink communication |
| CN110447294B (en) * | 2017-03-23 | 2023-06-09 | 苹果公司 | Priority message and resource selection in vehicle-to-vehicle (V2V) side link communications |
| US11877314B2 (en) | 2017-03-23 | 2024-01-16 | Apple Inc. | Prioritized messaging and resource selection in vehicle-to-vehicle (V2V) sidelink communication |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103098416B (en) | 2016-08-03 |
| WO2013029248A1 (en) | 2013-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10771177B2 (en) | Method for transmitting client signal in optical transport network, and optical transport device | |
| US10425153B2 (en) | Generalized service protection systems and methods | |
| US8259733B2 (en) | Systems and methods for rapid optical transport network circuit provisioning | |
| US8934479B2 (en) | Super optical channel transport unit signal supported by multiple wavelengths | |
| EP3454489B1 (en) | Service transmission method and first transmission device | |
| US8958701B2 (en) | Methods and systems of preserving client overhead bytes in optical transport network tunneling applications | |
| JP5883509B2 (en) | Network elements for switching time division multiplexed signals | |
| CN101873517B (en) | Signal transmission method, device and communication system for optical transport network | |
| CN102763355A (en) | Traffic differentiation in a transport network | |
| US20210152898A1 (en) | Transmission network system, data switching and transmission method, apparatus and equipment | |
| EP1391068A1 (en) | Restoration protection in communication networks | |
| US9825696B2 (en) | Ethernet link state signaling for packet flows mapped into optical transport network with generic framing procedure | |
| CN100521620C (en) | Method and network management system for determining a path in an integrated telecommunication network | |
| US7145882B2 (en) | Multiplexed automatic protection switching channels | |
| US20040085954A1 (en) | Out-of-band signalling apparatus and method for an optical cross connect | |
| US20040221058A1 (en) | Nested protection switching in a mesh connected communications network | |
| CN103547338B (en) | The multi-carrier spectrum moving method of lossless business and device | |
| KR101530561B1 (en) | Signaling control method and system for service establishment based on g.709 | |
| CN102143410B (en) | Path computing method and unit in optical network | |
| CN103098416A (en) | Protection resource allocation method, device and system | |
| CN106470085B (en) | Communication means based on synchronous digital system SDH and SDH equipment | |
| JP2013141082A (en) | Switching device | |
| EP3057269B1 (en) | Control channel establishment method, apparatus and system | |
| CN104247315A (en) | Optical-layer multipath protection for optical network | |
| US20150249874A1 (en) | Optical communication apparatus and optical communication method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |