WO2016058118A1 - 业务优化方法、传输网控制器、客户控制器及系统 - Google Patents

业务优化方法、传输网控制器、客户控制器及系统 Download PDF

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Publication number
WO2016058118A1
WO2016058118A1 PCT/CN2014/088473 CN2014088473W WO2016058118A1 WO 2016058118 A1 WO2016058118 A1 WO 2016058118A1 CN 2014088473 W CN2014088473 W CN 2014088473W WO 2016058118 A1 WO2016058118 A1 WO 2016058118A1
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Prior art keywords
optimization
service
policy
instruction
requirement
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PCT/CN2014/088473
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English (en)
French (fr)
Inventor
郑好棉
刘宏
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华为技术有限公司
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Priority to PCT/CN2014/088473 priority Critical patent/WO2016058118A1/zh
Priority to CN201480077872.6A priority patent/CN106464609B/zh
Priority to EP14904040.4A priority patent/EP3197111B1/en
Publication of WO2016058118A1 publication Critical patent/WO2016058118A1/zh
Priority to US15/486,056 priority patent/US10715390B2/en

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    • 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
    • H04L45/302—Route determination based on requested QoS
    • H04L45/306—Route determination based on the nature of the carried application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0893—Assignment of logical groups to network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/326—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the transport layer [OSI layer 4]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0894—Policy-based network configuration management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12—Discovery or management of network topologies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12—Discovery or management of network topologies
    • H04L41/122—Discovery or management of network topologies of virtualised topologies, e.g. software-defined networks [SDN] or network function virtualisation [NFV]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels

Definitions

  • the present invention relates to the field of communications, and more particularly to a service optimization method and apparatus.
  • a CC Client Controller
  • a TC Transport Controller
  • the CC is equivalent to the tenant, and the physical network resources are divided into virtual network topologies by the TC according to the tenant requirements, and then provided to the tenant (CC).
  • the TC maintains physical network resource allocation and global network topology information, and puts resources that are not allocated to any CC into the resource pool for unified scheduling management.
  • CC can control and manage its own virtual network topology resources. For example, CC1 can allocate path 1 in the virtual network topology resource to carry service 1, and allocation path 2 carries service 2. Resources that are not allocated to any service are placed in the resource pool of the CC, and are uniformly scheduled and managed by the CC.
  • the inventors have found that in many cases, the CC needs to optimize the service online, for example, to adjust a service from the original path to another path.
  • the available virtual network resources managed by the CC are insufficient, the process of first building and then disassembling cannot be completed, and thus the network service cannot be optimized without interrupting the service.
  • the purpose of the embodiments of the present invention is to provide a service optimization method, a transmission network controller, a client controller, and a system, so as to reduce service interruption in the service optimization process.
  • the embodiment of the present invention provides the following technical solutions:
  • a service optimization method including:
  • the transport network controller TC receives an optimization request from the client controller CC, where the optimization request carries the identification information of the service and the routing information that the service needs to pass;
  • the TC When the TC determines that the idle resource in the resource pool can meet the optimization requirement of the CC, the TC sends a response message to the CC, where the response message carries the identification information of the service and an optimization strategy that meets the optimization requirement of the CC. ;
  • the TC optimizes the service identified in the optimization instruction according to an optimization policy in the optimization instruction.
  • the optimization policy that meets the optimization requirements of the CC is used to indicate that the first build is performed.
  • the optimization request further includes a specific service-based interrupt policy
  • the method further includes: determining, by the TC, that the idle resource in the resource pool cannot meet the Sending, to the CC, a response message carrying the identification information of the service and the optimization policy conforming to the interruption policy, and the TC receiving an optimization instruction of the CC, where the optimization instruction carries a service The identification information and the corresponding optimization policy that meets the interruption policy; the TC optimizes the service identified in the optimization instruction according to the optimization policy in the optimization instruction.
  • the optimization instruction received by the TC includes identifier information of a single service, and The optimization strategy of the service, the TC, according to the optimization policy in the optimization instruction, optimizing the identifier service in the optimization instruction, specifically: the TC optimizes the single service according to an optimization policy in the optimization instruction .
  • the TC received the optimized instruction includes identifier information of multiple services, and
  • the TC for the optimization policy of the multiple services, the TC, according to the optimization policy in the optimization instruction, optimizing the identification service in the optimization instruction, specifically includes: the TC is optimized according to the The optimization strategy in the instruction optimizes the plurality of services.
  • the routing information carries node information of a node that the service passes through, where the node includes a start
  • determining, by the TC, whether the idle resource in the resource pool can meet the optimization requirement of the CC includes: determining whether the idle resource between the start node and the end point in the resource pool satisfies the The optimization needs of CC.
  • a service optimization method including:
  • the transport network controller TC receives an optimization request from the client controller CC, where the optimization request carries the identification information of the service, the routing information that the service needs to pass, and the authorization information, where the authorization information is used to authorize the TC to directly complete Business optimization
  • the TC When the TC determines that the idle resource in the resource pool can meet the optimization requirement of the CC, the TC optimizes the service identified in the optimization request according to an optimization policy that meets the optimization requirement of the CC.
  • the optimizing the service identified in the optimization request according to an optimization policy that meets an optimization requirement of the CC includes: using idle in the resource pool The resource adjusts the service identified in the optimization instruction to the route to be traversed without interruption.
  • the optimization policy that meets the optimization requirement of the CC is used to indicate that the first build is performed.
  • the optimization request further includes a specific service-based interrupt policy
  • the method further includes: determining, by the TC, that the idle resource in the resource pool cannot satisfy the
  • the service identified in the optimization request is optimized according to an optimization strategy that conforms to the interruption policy.
  • the optimizing the service identified in the optimization request according to the optimization policy that meets the interruption policy includes: the TC The specific service is interrupted according to the interrupt policy to release the network resource; the TC adjusts the uninterrupted service to the route to be traversed without interruption.
  • the optimizing the service identified in the optimization request according to the optimization policy that meets the interruption policy further includes: The TC establishes a route for the service that has been interrupted.
  • a service optimization method including:
  • the client controller CC sends an optimization request to the transport network controller TC;
  • the optimization request carries the identification information of the service and the routing information that the service needs to pass;
  • the optimization policy carried by the response message and the optimization strategy carried by the optimization instruction are optimization strategies that meet the optimization requirements of the CC. .
  • the optimization request further carries a specific service-based interrupt policy; when the TC determines that the idle resource in the resource pool cannot meet the optimization requirement of the CC
  • the optimization policy carried by the response message and the optimization policy carried by the optimization instruction are all optimization strategies that comply with the interruption policy.
  • a transport network controller including:
  • a first data receiver configured to receive an optimization request from the client controller CC, where the optimization request carries the identification information of the service and the routing information that the service needs to pass;
  • a data transmitter configured to send a response message to the CC when the processor determines that the idle resource in the resource pool can meet the optimization requirement of the CC, where the response message carries the identification information of the service and the corresponding optimization policy;
  • a second data receiver configured to receive an optimization instruction of the CC, where the optimization instruction carries identification information of a service and a corresponding optimization policy;
  • a processor configured to optimize, according to an optimization policy in the optimization instruction, a service identified in the optimization instruction
  • the optimization strategy carried by the response message and the optimization strategy carried by the optimization instruction are all optimized according to the optimization requirement of the CC. Strategy.
  • the optimization request further includes an interrupt policy for a specific service; when the TC determines that the idle resource in the resource pool cannot meet the optimization requirement of the CC
  • the optimization policy carried by the response message and the optimization policy carried by the optimization instruction are all optimization strategies that comply with the interruption policy.
  • a transport network controller including:
  • a data receiver configured to receive an optimization request from the client controller CC, where the optimization request carries identification information of the service, routing information that the service needs to pass, and authorization information, where the authorization information is used to authorize the TC Complete business optimization directly;
  • the processor is configured to optimize the service identified in the optimization request according to an optimization policy that meets the optimization requirement of the CC, when the idle resource in the resource pool can meet the optimization requirement of the CC.
  • a client controller including:
  • a first data transmitter configured to send an optimization request to the connected transport network controller TC, where the optimization request carries the identification information of the service and the routing information that the service needs to pass;
  • a data receiver configured to receive a response message carrying the service identification information and the optimization policy from the TC;
  • a second data transmitter configured to send an optimization instruction to the TC, where the optimization instruction carries identification information of a service and a corresponding optimization policy; the optimization instruction is used by the TC according to an optimization strategy in the optimization instruction Optimizing the service identified in the optimization instruction;
  • the optimization policy carried by the response message and the optimization strategy carried by the optimization instruction are optimization strategies that meet the optimization requirements of the CC. .
  • a service optimization system including a transport network controller TC and a client controller CC;
  • the CC is configured to send an online optimization request to the TC, where the optimization request carries the identification information of the service and the routing information that the service needs to pass; receiving the identification information of the service carried by the TC and conforming to the CC And optimising the response message of the optimization strategy; and sending an optimization instruction to the TC, where the optimization instruction carries the identification information of the service and an optimization strategy that meets the optimization requirement of the CC;
  • the TC is configured to send the response message to the CC when determining that the resource in the resource pool can meet the optimization requirement of the CC, and identify the identifier in the optimization instruction according to an optimization policy in the optimization instruction.
  • Business is optimized.
  • the CC may send an optimization request to the TC, so as to use idle network resources in the TC resource pool.
  • the TC performs an optimization strategy that meets the optimization requirements of the CC to help the CC realize the non-disruptive optimization of the service, thereby reducing the service in the service optimization process. Interruption.
  • FIG. 1 is a schematic diagram of a structure of a transport network according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an actual network topology according to an embodiment of the present invention.
  • Figure 3-4 is a schematic diagram of a virtual network topology according to an embodiment of the present invention.
  • FIG. 5 is a service distribution diagram according to an embodiment of the present invention.
  • 6-7 are diagrams showing an example of service optimization according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a network virtual topology according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of interaction according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an actual network topology according to an embodiment of the present invention.
  • FIG. 11 is another flow chart of interaction according to an embodiment of the present invention.
  • FIG. 12 is a flowchart of still another interaction between a CC and a TC according to an embodiment of the present invention.
  • FIG. 13 is a flowchart of still another interaction between a CC and a TC according to an embodiment of the present invention.
  • FIG. 14 is a network virtual topology diagram of CC1 management according to an embodiment of the present invention.
  • FIG. 15 is a flowchart of still another interaction between a CC and a TC according to an embodiment of the present invention.
  • FIG. 16 is a flowchart of still another interaction between a CC and a TC according to an embodiment of the present invention.
  • FIG. 17 is a network virtual topology diagram of CC1 management according to an embodiment of the present invention.
  • 18a, 18b, 19a, 19b, 20, and 21 are flowcharts of a service optimization method according to an embodiment of the present invention.
  • 22 and 23 are diagrams respectively showing an example of a structure of a transmission network controller according to an embodiment of the present invention.
  • FIG. 24 is a diagram showing an example of a structure of a client controller according to an embodiment of the present invention.
  • the CC Client Controller
  • TC Transport Controller
  • the CC is equivalent to the tenant.
  • the physical resources are divided into virtual network topologies by the TC according to the tenant requirements, and then provided to the tenant (CC).
  • the resources of different CCs are independent of each other and do not feel the existence of each other.
  • the actual (physical) network topology is shown in Figure 2, the chain between node A and node B.
  • the bandwidth of the road AB is 10M
  • the node A and the node B can also be connected through the node C and the node D, and the bandwidths of the link AC, the link BC, the link AD, and the link BD are all 10M.
  • the network resources allocated by the TC to CC1 are as follows: link AB: 5M; link AC: 5M; link BC: 5M.
  • the virtual network topology seen by CC1 is shown in Figure 3.
  • the network resources allocated by the TC to CC2 are as follows: link AC: 5M; link BC: 5M; link AD: 7M; link BD: 7M. Then the virtual network topology seen by CC2 is shown in Figure 4.
  • the CC can control and manage its own virtual network topology resources. For example, CC1 can allocate path A-C-B bearer service 1, and assign path A-B bears service 2. CC also has the ability to create/delete/change/query its virtual network topology resources. Resources that are not allocated to any service are placed in the resource pool of the CC, and are uniformly scheduled and managed by the CC.
  • the TC In addition to maintaining the physical network resource allocation and global network topology information, and allocating resources that are not allocated to any CC into the resource pool for unified scheduling management, the TC also records the current virtual network resource allocation of each CC. For example, the CC1 allocates the path A-C-B bearer service 1 and the assignment path A-B bears the service 2, and the TC also records the bandwidth occupied by the service 1 and the service 2 respectively.
  • both service 1 and service 2 are from node A to node B, service 1 takes path A-B, and service 2 takes path A-C-B (assuming that services 1 and 2 occupy the same bandwidth, both are 10M).
  • Online optimization based on user requirements requires that service 1 change path A-C-B and service 2 change path A-B.
  • the online optimization can be achieved by the following pre-built and post-disassembly processes as follows:
  • the CC establishes a path for the service A to be routed to the A-D-B, and then removes the route of the service 1 as the path of the A-B; thus, the route whose route is A-B is released;
  • CC establishes a route for service 2 to be A-B, and then removes the route of service 2 as the path of A-C-B;
  • the CC establishes a path for the service 1 to be routed to the A-C-B, and then removes the route of the service 1 as the path of the A-D-B.
  • the service 1 can be changed to take the path A-C-B, and the service 2 is changed. Path A-B.
  • the resources in the resource pool managed by the CC are insufficient (when the bandwidth of the A-D-B is only 5M), the first build and then the split cannot be performed, so that the network service cannot be optimized without interrupting the service.
  • the service 1 route is cut off to the A-B path (or the service 2 route is routed to A-C-B);
  • the path for the service 2 is routed to the A-B, and then the route of the service 2 is the path of the A-C-B; (or the route of the service A is established as the route of the A-C-B, and then the route of the service 1 is removed as the path of the A-B);
  • the service 1 is established on the path where the route released by the service 2 is A-C-B (or the service 2 is established on the path where the route released by the service 1 is A-B).
  • the embodiment of the present invention provides a service optimization solution to reduce service interruption in the service optimization process.
  • the core of the service optimization solution provided by the embodiment of the present invention is that the CC sends an optimization request to the TC to request temporary resources in the TC resource pool, and the TC allocates temporary resources as much as possible to help the CC implement service uninterrupted optimization.
  • the service optimization solution provided by the embodiment of the present invention can be adapted to the following scenarios.
  • the network virtual topology of CC1 is shown in Figure 8. It consists of three nodes (A, B, C) and two services (Service 1 and Service 2), assuming that the two services have the same bandwidth. Both service 1 and service 2 are from node A to node B, service 1 takes path A-B, and service 2 takes path A-C-B.
  • CC1 After checking all the virtual resources of its own, CC1 judges that if CC1 completes online optimization of services on the virtual topology (for example, the reconciliation between service 1 and service 2), at least one of the services needs to be interrupted (that is, CC1 itself is available for virtual use). Resources cannot adjust Service 1 and Service 2 without interruption to the path/route that needs to pass.
  • the following may be between CC1 and TC. Interaction process (see Figure 9):
  • S901 CC1 sends an optimization request to the TC.
  • the optimization request may carry identification information (such as a service ID) of the service and routing information that the service needs to pass.
  • identification information such as a service ID
  • the routing information may carry node information of a node through which the service passes, the node including a starting node (source node) and an endpoint (sink node).
  • the optimization request can include the following:
  • Service 1 (the route that service 1 needs to pass) A-C-B;
  • Service 2 (the route that service 2 needs to pass) A-B.
  • the optimization request may include a partial route in the route that the service needs to go to adjust with respect to the current path.
  • the optimization request may not include the current route (path) of the service, and the TC may know the current route of the service identified in the optimization request by looking up the record.
  • the optimization request may also include a current route (path) of the service. This way TC does not have to look up records.
  • S902 The TC checks the resource pool to determine whether the idle resource in the resource pool can meet the optimization requirement of the CC.
  • the foregoing resource pool may include a TC resource pool and a CC resource pool.
  • the idle resource may include an idle resource (a path and a bandwidth of the path) between the source and sink nodes.
  • the optimization request includes "service 1, (the route to be traversed by the service) ACB; service 2, (the route to be traversed by the service) AB", for example, the TC detects the path between the source and sink nodes A and B, and the bandwidth of the path. .
  • determining whether the idle resource in the resource pool can meet the optimization requirement of the CC may include: determining whether the idle resource between the start node and the end point in the resource pool satisfies the optimization requirement of the CC.
  • the optimization requirement of the CC may specifically include: adjusting the service identified in the optimization request without interruption to the route that the service needs to pass.
  • S903 The TC finds that there is still idle resource on the route between the source and sink nodes of service 1, and can be used for helping.
  • Help CC1 complete the non-disruptive online optimization (that is, the idle resources in the resource pool can meet the optimization requirements of the CC), and then send a response message to CC1.
  • the response message may carry identification information of the service and an optimization strategy that meets the optimization requirements of the CC.
  • the above optimization strategy may include a path demolition order indication for at least one service.
  • the TC finds that the path between the source and sink nodes of the service 1 is A-E-B is idle (the route that is routed to the A-E-B belongs to the idle resource in the TC resource pool), and the response message sent by the TC to the CC1 may include:
  • the TC route carrying service 1 is removed.
  • the path routed to A-E-B is not the path in the virtual network topology of CC1. Therefore, the response message does not need to include the path of the route A-E-B, but simply replace it with "TC routing" (or other equivalent term).
  • the optimization instruction carries identification information of the service and an optimization strategy that meets the optimization requirements of the CC.
  • the optimization strategy in the optimization instruction is consistent with the optimization strategy in the response message, and can indicate the path demolition order of at least one service.
  • S905 The TC optimizes the service identified in the optimization instruction according to an optimization strategy in the optimization instruction.
  • the idle resources in the resource pool are used to adjust the services identified in the optimization instruction to the route to be traversed without interruption.
  • the optimization instruction received by the TC may include an identification letter of a single service.
  • the interest rate and the optimization strategy for the single service, the "TC optimizes the identification service in the optimization instruction according to the optimization strategy in the optimization instruction" may specifically include:
  • the TC optimizes a single service according to the optimization strategy in the optimization instruction.
  • the optimization instruction received by the TC may also include identification information of multiple services and an optimization policy for the multiple services, and the “TC optimizes the identification service in the optimization instruction according to the optimization policy in the optimization instruction”. Specifically include:
  • the TC optimizes the multiple services according to the optimization strategy in the optimization instruction.
  • the foregoing steps S904 and S905 may be further refined into a multi-step interaction process.
  • the interaction process between CC1 and TC can be as follows:
  • 1CC1 initiates an optimization instruction, instructing the TC to "establish a TC route carrying the service 1" (the TC route establishing the bearer service 1 is an optimization policy).
  • the 2TC uses the idle resource in the TC resource pool as a temporary resource to establish a path for service 1 to be A-E-B. After the TC is completed, a completion message is sent to CC1.
  • CC1 does not know that the TC uses the path with the route A-E-B as the temporary resource. CC1 only needs to instruct the TC to establish a TC route for service 1, and the TC decides which path to use.
  • 3CC1 After receiving the completion message, 3CC1 initiates an optimization instruction, instructing the TC to "remove the A-B route carrying the service 1".
  • the 4TC removes the route of service 1 into the path of A-B in the virtual network leased by CC1. After the TC is completed, a completion message is sent to CC1.
  • the current idle resource in the resource pool of the CC1 is refreshed to include the route with the route A-B.
  • the 5CC1 After receiving the completion message, the 5CC1 initiates an optimization instruction to instruct the TC to "establish an A-B route carrying the service 2".
  • the TC After receiving the optimization instruction indicating "establishing the A-B route of the bearer service 2", the TC uses the resources in the network leased by the CC1 (that is, uses the idle resources in the CC1 resource pool) to establish a path for the service 2 to be routed to A-B. After the TC is completed, a completion message is sent to CC1.
  • 7CC1 After receiving the completion message, 7CC1 initiates an optimization instruction again, instructing the TC to "remove the A-C-B route carrying the service 2".
  • the 8TC removes the route of service 2 into the path of A-C-B in the network leased by CC1. After the TC is completed, a completion message is sent to CC1.
  • the current idle resource in the resource pool of the CC1 is refreshed to include the path of the route A-C-B.
  • 9CC1 After receiving the completion message, 9CC1 initiates an optimization instruction again, instructing the TC to "establish A-C-B route carrying service 1";
  • the 10TC uses the resources in the network leased by CC1 (that is, uses the idle resources in the CC1 resource pool) to establish a path for the service 1 to be routed to A-C-B. After the TC is completed, a completion message is sent to CC1.
  • CC1 After receiving the completion message, CC1 initiates an optimization instruction again, instructing the TC to "remove the TC route carrying the service 1";
  • the route of the TC teardown service 1 is the path of the AEB (that is, the temporary resources are reclaimed). After the TC is completed, a completion message is sent to CC1.
  • steps S903-S905 are performed when the idle resources in the resource pool can meet the optimization requirements of the CC. If the idle resources in the resource pool cannot meet the optimization requirements of the CC, the TC may return an optimization failure message.
  • the corresponding interaction process can be seen in Figure 11.
  • the optimization request may further include authorization information, where the authorization information is used to authorize the transport network controller to directly perform service optimization.
  • authorization information is used to authorize the transport network controller to directly perform service optimization.
  • the authorization flag may be set in the above optimization request by indicating whether the authorization flag positions 0 and 1 are licensable. For example, setting 0 indicates no authorization, setting 1 indicates authorization, or setting 0 indicates authorization, and setting 1 indicates no authorization.
  • the authorization information is included in the optimization request, please refer to FIG. 12.
  • the following interaction process may be performed between the CC1 and the TC:
  • S1201: CC1 sends an optimization request to the TC.
  • the optimization request carries a service ID and a service. Routing and authorization information to pass.
  • Step S1201 is similar to step S901, and is not described herein.
  • the TC checks the resource pool to determine whether the idle resources in the resource pool can meet the optimization requirements of the CC.
  • Step S1202 is similar to step S902, and is not described herein.
  • S1203 The TC finds that the idle resource in the resource pool can meet the optimization requirement of the CC, and optimizes the service identified in the optimization request according to an optimization policy that meets the optimization requirement of the CC.
  • the foregoing “optimizing the service identified in the optimization request according to the optimization policy that meets the optimization requirement of the CC” may include: using the idle resource in the resource pool to interrupt the service identified in the optimization request. Adjust to the route that needs to pass.
  • the 1TC uses the resources in the TC resource pool as a temporary resource to establish a path for the service A to be routed to the A-E-B. Then, the TC removes the route of the service 1 into the path of the A-B in the virtual network leased by the CC1.
  • the 2TC uses the resources in the network leased by the CC1 to establish a path for the service 2 to be routed to the A-B. Then, the TC removes the route of the service 2 into the path of the A-C-B in the network leased by the CC1.
  • the 3TC uses the resources in the network leased by the CC1 to establish a path for the service A to be routed to the A-C-B, and then the route of the TC to remove the service 1 is the path of the A-E-B (that is, the temporary resource is reclaimed). After the TC is completed, an adjustment success message is sent to CC1.
  • step S1203 is performed when the idle resources in the resource pool can meet the optimization requirements of the CC. If the idle resources in the resource pool cannot meet the optimization requirements of the CC, the TC may return an optimization failure message.
  • the CC may send an optimization request to the TC, so as to use idle network resources in the TC resource pool.
  • the TC performs an optimization strategy that meets the optimization requirements of the CC to help the CC realize the non-disruptive optimization of the service, thereby reducing the service in the service optimization process. Interruption.
  • the TC will return an optimization failure message.
  • the optimization request may further include an interrupt policy for a specific service, where the interrupt policy is used to indicate that the service identified by the optimization request is allowed to be interrupted (which may be simply referred to as an interrupt service).
  • the TC can rediscover the business optimization plan that meets the CC requirements according to the interruption strategy.
  • the interrupt policy is further used to indicate an interrupt sequence of the at least two interruptible services.
  • D1-D5 there are 5 services D1-D5, where D1-D3 are interruptible services
  • the interrupt policy can also indicate the interrupt sequence of D1-D3. If the interrupt sequence is D2, D3, D1, the subsequent TC can follow D2- The order of >D3->D1 interrupts these three services.
  • CC can consider various requirements when formulating an outage strategy. Taking the common rules of the industry as an example, CC can formulate an outage strategy according to the following principles:
  • the service with a lower priority of the service priority is interrupted
  • Priority is given to interrupting services that occupy critical paths in services with the same service priority
  • Priority is given to interrupting services with large bandwidth in services with the same service priority and occupying the same critical path;
  • the services that occupy more resources are preferentially interrupted.
  • the interrupt priority can be used to indicate the interrupt sequence. For example, if the interrupt priority of D1-D3 is D2>D3>D1, then D2 is prioritized.
  • the following takes another scenario as an example to describe that the resources in the resource pool cannot meet the optimization requirements of the CC, and how the TC searches for a service optimization solution that meets the CC requirements according to the interruption policy.
  • Figure 14 shows the virtual network topology managed by CC1.
  • the virtual network topology has five links.
  • the bandwidth of each link is: 1-2 and 2-3 are respectively 7G; links 1-4, 1-3, and 4-3 are 10G.
  • D1-D3 there are three services D1-D3 in the network, of which D1 (route is 1-2-3) occupies 3G bandwidth.
  • D2 (Route 1-3) occupies 10G of bandwidth, and D3 (Route 1-4-3) occupies 7G of bandwidth.
  • the routes that D1 and D3 need to pass are 1-3, and the route that D2 needs to pass is 1-4-3.
  • the following interaction process may be performed between CC1 and the TC:
  • S1501 CC1 sends an optimization request to the TC.
  • the optimization request carries a service ID, routing information, authorization information, and an interrupt policy.
  • the service ID carried in the optimization request and the corresponding route to be traversed include:
  • Service D1 (the route that the service needs to pass) 1-3;
  • Service D2 (the route that the service needs to pass) 1-3-4;
  • Service D3 (the route that the service needs to pass) 1-3.
  • the interrupt priority order in the interrupt strategy is D2, D3, and D1.
  • the TC determines that the idle resource in the resource pool cannot meet the optimization requirement of the CC, and optimizes the service identified in the optimization request according to the optimization policy that meets the interruption policy.
  • the foregoing implementation manner of “optimizing the service identified in the optimization request according to the optimization policy that meets the interruption policy” may include:
  • the TC interrupts specific services according to the interrupt policy to release network resources
  • the TC adjusts the uninterrupted service to the route that needs to pass without interruption.
  • the TC may interrupt the specific service in sequence according to the interrupt sequence indicated by the interrupt policy until the non-interrupt optimization condition is met, or until all interruptible services have been interrupted. The above non-disruptive optimization conditions are still not met.
  • the foregoing non-disruptive optimization condition may include: “the idle network resource in the resource pool supports at least one service without interruption to the route to be traversed”.
  • the TC can preferentially interrupt service D2 according to the interrupt policy. After the service D2 is interrupted, the 10G bandwidth of the link 1-3 can be released, and the idle network resource in the resource pool of the CC1 can support at least one service (services D1 and D3) to be uninterrupted to the route to be traversed, thereby satisfying the above requirements. No interruption optimization conditions.
  • the TC uses the idle resources in the resource pool to build the unopened industry through the first build and then the split.
  • the services ie, services D1 and D3 are uninterrupted to the route to be traversed.
  • the service D1 is first built and then removed, and the route is adjusted from 1-2-3 to 1-3;
  • the TC uses the resources in the network leased by the CC (links 1-3) to establish a path of 1-3 for the service D1, and then the TC removes the route of the service D1 from the CC leased network to 1-2. -3 path.
  • the service D3 is first built and then removed, and the route is adjusted from 1-4-3 to 1-3.
  • the TC uses the resources in the network leased by the CC (service link 1-3) to establish a path of 1-3 for the service D1, and then the TC removes the route of the service D3 from the network leased by the CC to be 1- 4-3 path.
  • the service optimization performed by the TC may include: establishing a route to be traversed for the service that has been interrupted.
  • the TC removes the service D2. After the service D1 and D3 are completed and then removed, the route is 1-4-3. The TC establishes the route 1-4-3 for the service D2. Routing.
  • S1502-S1503 can also be summarized as follows: When the TC determines that the current idle resource in the resource pool cannot meet the optimization requirement of the CC, but satisfies the non-disruptive optimization condition after interrupting the specific service according to the interruption policy, according to the optimization strategy that complies with the interruption strategy, The service identified in the optimization request is optimized.
  • the service interruption can be completed between the TC and the CC1 through the response message and the optimization instruction for the scenario shown in FIG. Reconstruct the business that has been interrupted, etc.
  • the optimization strategy carried by the response message is an optimization strategy that complies with the interrupt policy.
  • the response message returned by the TC to CC1 can carry the following content:
  • the CC will initiate the corresponding optimization instruction according to the response message.
  • the CC will initiate the corresponding optimization instruction according to the response message.
  • the TC may return an optimization failure message if the TC interrupts all interruptible services and cannot satisfy the non-interrupt optimization condition.
  • the TC returns an optimization failure message when it determines that the current idle resource in the resource pool cannot satisfy the optimization requirement of the CC and does not satisfy the non-interruption optimization condition after interrupting the specific service according to the interruption policy.
  • FIG. 17 is a virtual network topology managed by CC1 in this embodiment.
  • the virtual network topology has five links.
  • the bandwidth of each link is: link 1-3, 1-4, and 3-4 link bandwidth is 10G; links 1-2 and 2-3 are two links.
  • the bandwidth is 7G.
  • D1 bandwidth 6G: current path 1-2-3, route 1-3 that the service needs to pass after optimization;
  • D2 bandwidth 3G: current path 1-3; route 1-4-3 that the service needs to pass after optimization;
  • D3 bandwidth 4G: current path 1-4-3; route 1-3 that the service needs to pass after optimization;
  • D4 bandwidth 7G: current path 1-3; route 1-2-3 that the service needs to pass after optimization.
  • the following interaction process may be performed between the CC1 and the TC:
  • Step 1701 CC1 sends an optimization request to the TC.
  • the optimization request carries a service ID, routing information, authorization information, and an interrupt policy.
  • Step 1702 The TC checks the idle resources in the resource pool to determine whether the idle resources in the resource pool can meet the optimization requirements of the CC.
  • Resource X is not visible to CC1.
  • Step 1703 The TC uses the resource X as a temporary resource, and performs online optimization on at least one service (services D2 and D3) by first constructing and then disassembling.
  • 1TC will first build and then disassemble the service D3 and carry it on the temporary resource X.
  • the 2TC uses the resources in the network leased by the CC1 to establish a path of the route 1-4-3 for the service D2. Then, the TC removes the path of the original route D1 of the service D2 in the network leased by the CC1.
  • Step 1704 The TC checks the idle resources in the resource pool to determine whether the above-mentioned non-disruptive optimization condition is met.
  • Step 1705 The TC finds that the non-disruptive optimization condition is not met, and the service is interrupted according to the interrupt policy to release the network resource.
  • link 1-3 is idle 3G
  • link 1-3-4 is idle 1G
  • link 1-2-3 is idle 1G.
  • D1 occupies 6G bandwidth
  • D4 occupies 7G bandwidth
  • the current idle network resources are insufficient to support any service without interruption to the route to be traversed. Therefore, TC interrupts service D1 and releases route 1 according to the interrupt sequence in the interrupt policy.
  • Step 1706 The TC checks the idle resources in the resource pool to determine whether the non-interrupt optimization condition is met.
  • Step 1707 The TC finds that the above-mentioned non-disruptive optimization condition is satisfied, and uses at least one service (service D4) to perform online optimization by using the idle network resource.
  • service D4 at least one service
  • the link 1-3 is idle 3G
  • the path 1-4-3 is idle 1G
  • the path 1-2-3 is idle 7G
  • the route D4 can be adjusted. Therefore, the service D4 is adjusted to the route with the route 1-2-3, and the original route of the service D4 is 1-3.
  • the TC adjusts the service D3 carried on the temporary resource X to the route 1-3 by first constructing and then disassembling.
  • Step 1708 For the service that has been interrupted (service D1), the TC establishes a corresponding route to be traversed (establishing route 1-3 for service D1).
  • the service interruption can be completed between the TC and the CC1 through the response message and the optimization instruction for the scenario shown in FIG. Rebuild the business that has been interrupted, etc.
  • the TC can predict the idle network resources after the first construction and the post-disassembly and the interruption of the service, so as to formulate a complete set of removal sequence.
  • the response message sent by the TC may include :
  • the CC will initiate the corresponding optimization instruction according to the response message.
  • the CC will initiate the corresponding optimization instruction according to the response message.
  • the communication between the CC and the TC may be based on a PCE (Path Computation Element) and a PCC (Path Computation Client) protocol - PCEP (PCE Protocol).
  • PCE Path Computation Element
  • PCC Path Computation Client
  • PCEP PCEP
  • the communication between the CC and the TC can also be done based on other communication protocols.
  • the PCE and the PCC can also implement service optimization in a manner similar to the above embodiment.
  • the service optimization method performed by the TC side may include the following steps:
  • the optimization request may be triggered by the CC when the available virtual resources cannot adjust the service to the route that the service needs to pass.
  • the above optimization request carries at least the service identifier and the route that the service needs to pass.
  • the TC sends a response message to the CC when the idle resource in the resource pool can meet the optimization requirement of the CC, and the response message carries the identification information of the service and an optimization policy that meets the optimization requirement of the CC.
  • the TC receives the optimization instruction of the CC, where the optimization instruction carries the identification information of the service and an optimization policy that meets the optimization requirement of the CC.
  • the foregoing TC optimizes the service identified in the optimization instruction according to an optimization strategy in the foregoing optimization instruction.
  • the service optimization method performed by the TC side may include the following steps:
  • the optimization request carries the identification information of the service, the routing information that the foregoing service needs to pass, and the authorization information, and the authorization information is used to authorize the TC to directly complete the service optimization.
  • the service optimization method performed by the TC side may further include:
  • the TC sends a response message carrying the identification information of the service and the optimization policy that meets the foregoing interrupt policy to the CC when determining that the idle resource in the resource pool cannot meet the optimization requirement of the foregoing CC.
  • the TC determines that the idle resource in the resource pool cannot meet the optimization requirement of the foregoing CC, but after the interrupt service is interrupted, the non-disruptive optimization condition can be satisfied, and the identifier information carrying the service is sent to the CC and meets the above requirements.
  • the response message of the optimization strategy of the interrupt policy is not limited to the above requirements.
  • the TC receives the optimization instruction of the CC, where the optimization instruction carries the identification information of the service and an optimization strategy that meets the interruption policy.
  • the TC optimizes the service identified in the optimization instruction according to an optimization strategy in the foregoing optimization instruction.
  • the service optimization method performed by the TC side may include the following steps:
  • the TC when determining that the idle resource in the resource pool cannot meet the optimization requirement of the foregoing CC, optimizes the service identified in the optimization request according to an optimization policy that meets the foregoing interrupt policy.
  • the TC determines that the idle resource in the resource pool cannot meet the optimization requirements of the foregoing CC, but when the interrupt service is interrupted and the specific service can satisfy the non-interruption optimization condition, the optimization request is performed according to the optimization strategy that meets the above interrupt policy.
  • the business identified in the middle is optimized.
  • the foregoing optimizing the service identified in the optimization request according to the optimization strategy that meets the foregoing interruption policy may include:
  • the TC interrupts the specific service according to the foregoing interrupt policy to release network resources
  • the above TC adjusts the uninterrupted service to the route to be traversed without interruption.
  • the “optimizing the service identified in the optimization request according to the optimization policy that meets the foregoing interruption policy” may also include:
  • the above TC is a route that needs to pass through the service that has been interrupted.
  • the service optimization method performed by the TC side may further include: returning an optimization failure message, when the foregoing non-disruptive optimization condition is still not satisfied after all the interruptible services are interrupted.
  • Figure 20 depicts the process of the business optimization method from another perspective.
  • the service optimization method performed by the CC side may include the following steps:
  • the CC sends an optimization request to the TC, where the optimization request carries the identification information of the service and the routing information that the foregoing service needs to pass;
  • the CC receives the response message returned by the TC, where the response message carries the identification information of the service and the corresponding optimization policy.
  • the foregoing CC sends an optimization instruction to the TC, where the optimization instruction carries the identification information of the service and the corresponding optimization policy.
  • the optimization instruction is used by the TC to perform the service identified in the optimization instruction according to the optimization policy in the optimization instruction. optimization.
  • the optimization strategy carried by the response message and the optimization strategy carried by the optimization instruction are optimization strategies that meet the optimization requirements of the CC.
  • the optimization request may also carry an interrupt policy for a specific service.
  • the optimization policy carried by the response message and the optimization strategy carried by the optimization instruction are all optimization strategies that meet the foregoing interrupt policy.
  • the TC determines that the idle resource in the resource pool cannot meet the optimization requirement of the foregoing CC, but the optimization policy carried by the response message and the optimization instruction carried by the above-mentioned optimization instruction are carried out when the interrupt service is interrupted by the interrupt policy.
  • the optimization strategy is an optimization strategy that complies with the above interrupt strategy.
  • the embodiment of the invention also claims a transport network controller (TC).
  • TC transport network controller
  • the above TC may include:
  • the first data receiver 2201 is configured to receive an optimization request from the client controller CC, where the optimization request carries the identification information of the service and the routing information that the service needs to pass;
  • the data transmitter 2202 is configured to: when the processor 2204 determines that the idle resource in the resource pool can meet the optimization requirement of the CC, send a response message to the CC, where the response message carries the identification information of the service and the corresponding optimization policy;
  • the second data receiver 2203 is configured to receive an optimization instruction of the CC, where the optimization instruction carries the identification information of the service and the corresponding optimization policy;
  • the processor 2204 is configured to optimize the service identified in the optimization instruction according to an optimization strategy in the foregoing optimization instruction.
  • the optimization strategy carried by the response message and the optimization strategy carried by the optimization instruction are optimization strategies that meet the optimization requirements of the CC.
  • the optimization request in all the foregoing embodiments may also carry an interrupt policy for a specific service. Then, when the processor 2204 determines that the idle resource in the resource pool cannot meet the optimization requirement of the CC, the optimization strategy carried by the response message and the optimization strategy carried by the optimization instruction are all optimization strategies that meet the foregoing interrupt policy.
  • the processor 2204 determines that the idle resource in the resource pool cannot meet the optimization requirement of the CC, but the interrupt policy carries the optimization policy and the optimization instruction carried in the response message when the interrupt service is interrupted according to the interrupt policy.
  • the optimization strategy carried is an optimization strategy that complies with the above interrupt strategy.
  • FIG. 23 it is another structure of the foregoing transmission network controller, which may include:
  • the data receiver 2301 is configured to receive an optimization request from the client controller CC, where the optimization request carries the identification information of the service, the routing information that the service needs to pass, and the authorization information, where the authorization information is used to authorize the TC to directly complete Business optimization
  • the processor 2302 is configured to optimize the service identified in the optimization request according to an optimization policy that meets the optimization requirement of the CC when determining that the idle resource in the resource pool can meet the optimization requirement of the CC.
  • the optimization request in all the foregoing embodiments may also carry an interrupt policy for a specific service.
  • the processor 2302 may be further configured to: when determining that the idle resource in the resource pool cannot meet the optimization requirement of the CC, optimize the service identified in the optimization request according to an optimization policy that meets the interrupt policy.
  • the embodiment of the invention also claims a customer controller (CC).
  • CC customer controller
  • the above CC may include:
  • the first data transmitter 2401 is configured to send an optimization request to the connected TC, where the optimization request carries the identification information of the service and the routing information that the service needs to pass;
  • a data receiver 2402 configured to receive a response message carrying the service identification information and the optimization policy from the TC;
  • a second data transmitter 2403 configured to send an optimization instruction to the TC, where the optimization instruction carries the identification information of the service and the corresponding optimization strategy; the optimization instruction is used by the TC according to the optimization strategy in the optimization instruction The business identified in the middle is optimized.
  • the optimization strategy carried by the response message and the optimization strategy carried by the optimization instruction are all optimized according to the optimization requirement of the CC. Strategy.
  • the optimization request in all the foregoing embodiments may also carry an interrupt policy for a specific service.
  • the optimization strategy carried by the response message and the optimization strategy carried by the optimization instruction are all optimization strategies that meet the foregoing interrupt policy.
  • the TC determines that the idle resource in the resource pool cannot meet the optimization requirement of the foregoing CC, but the optimization policy carried by the response message and the optimization instruction carried by the above-mentioned optimization instruction are carried out when the interrupt service is interrupted by the interrupt policy.
  • the optimization strategy is an optimization strategy that complies with the above interrupt strategy.
  • the embodiment of the present invention also requires a service optimization system, including a transport network controller (TC) and a client controller (CC).
  • TC transport network controller
  • CC client controller
  • the foregoing CC is configured to send an online optimization request to the TC, where the optimization request carries the identification information of the service and the routing information that the service needs to pass; and receives the identifier information of the service carried by the TC and the response message of the corresponding optimization policy; Sending an optimization instruction to the TC, where the optimization instruction carries the identification information of the service and the corresponding optimization strategy;
  • the foregoing TC is configured to send the response message to the CC when determining that the resource in the resource pool can meet the optimization requirement of the CC, and optimize the service identified in the optimization instruction according to the optimization policy in the optimization instruction.
  • the optimization strategy carried by the response message and the optimization strategy carried by the optimization instruction are all optimized according to the optimization requirement of the CC. Strategy.
  • the optimization request in all the foregoing embodiments may also carry an interrupt policy for a specific service.
  • the optimization strategy carried by the response message and the optimization strategy carried by the optimization instruction are all optimization strategies that meet the foregoing interrupt policy.
  • the TC determines that the idle resource in the resource pool cannot meet the optimization requirement of the foregoing CC, but the optimization policy carried by the response message and the optimization instruction carried by the above-mentioned optimization instruction are carried out when the interrupt service is interrupted by the interrupt policy.
  • the optimization strategy is an optimization strategy that complies with the above interrupt strategy.
  • the present invention can be implemented by means of software plus necessary general hardware including general-purpose integrated circuits, general-purpose CPUs, general-purpose memories, general-purpose components, and the like.
  • general-purpose integrated circuits general-purpose CPUs
  • general-purpose memories general-purpose components
  • dedicated hardware including an application specific integrated circuit, a dedicated CPU, a dedicated memory, a dedicated component, etc., but in many cases, the former is a better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product, which may be stored in a readable storage medium, such as a USB flash drive.
  • a computer device which may be a personal computer, server, or network device, etc. performs the methods of various embodiments of the present invention.

Abstract

本发明实施例公开了业务优化方法、传输网控制器、客户控制器及系统。该方法包括：TC接收来自CC的优化请求；TC在判断资源池中的空闲资源能满足CC的优化需求时，向CC发送应答消息，应答消息携带有业务的标识信息和符合所述CC的优化需求的优化策略；TC接收CC的优化指令，优化指令携带有业务的标识信息以及相应的符合所述CC的优化需求的优化策略；TC按照优化指令中的优化策略对优化指令中标识的业务进行优化。可见，在本发明实施例中，CC可向TC发送优化请求，在资源池中的空闲网络资源能满足CC的优化需求时，TC会执行符合所述CC的优化需求的优化策略，从而减少了业务优化过程中的业务中断现象。

Description

业务优化方法、传输网控制器、客户控制器及系统 技术领域
本发明涉及通信领域，更具体地说，涉及业务优化方法及装置。
背景技术
在传送网中，CC(Client Controller，客户控制器)管理传送子网，TC(Transport Controller，传送网控制器)管辖一个或多个CC。CC相当于租户，物理网络资源被TC根据租户需求划分成虚拟的网络拓扑，然后提供给租户(CC)。TC会维护物理网络资源分配情况以及全局网络拓扑信息，并将未分配给任何CC的资源放入资源池统一进行调度管理。
CC可控制和管理自己的虚拟网络拓扑资源。例如，CC1可分配虚拟网络拓扑资源中的路径1承载业务1，分配路径2承载业务2。未分配给任何业务的资源会放入CC的资源池，由CC统一进行调度管理。
在实施本发明创造时，发明人发现，很多情况下，CC需要对业务进行在线优化，例如将某业务由原路径调整至另一路径。在进行在线优化时，可以使用先建后拆的方式：CC使用其管理的资源池内的可用虚拟资源建立一条优化路径来承载某业务并达到某种性能优化(包括但不限于时延，跳数，成本等)，当连接建立通信成功后，切断该业务原有的业务路径，由此可以无需中断业务完成在线优化。然而，当CC所管理的可用虚拟网络资源不足时，则无法完成先建后拆的流程，因此无法在不中断业务的情况下优化网络业务。
发明内容
有鉴于此，本发明实施例的目的在于提供业务优化方法、传输网控制器、客户控制器及系统，以减少业务优化过程中的业务中断现象。
为实现上述目的，本发明实施例提供如下技术方案：
根据本发明实施例的第一方面，提供一种业务优化方法，包括：
传送网控制器TC接收来自客户控制器CC的优化请求，所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；
所述TC在判断资源池中的空闲资源能满足所述CC的优化需求时，向所述CC发送应答消息，所述应答消息携带有业务的标识信息和符合所述CC的优化需求的优化策略；
所述TC接收所述CC的优化指令，所述优化指令携带有业务的标识信息以及相应的符合所述CC的优化需求的优化策略；
所述TC按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化。
结合第一方面，在第一种可能的实现方式中，所述符合所述CC的优化需求的优化策略，用于指示先建后拆。
结合第一方面，在第二种可能的实现方式中，所述优化请求中还携带有针对具体业务的中断策略，所述方法还包括：所述TC在判断资源池中的空闲资源不能满足所述CC的优化需求时，向所述CC发送携带有业务的标识信息和符合所述中断策略的优化策略的应答消息；所述TC接收所述CC的优化指令，所述优化指令携带有业务的标识信息以及相应的符合所述中断策略的优化策略；所述TC按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化。
结合第一方面第一种可能的实现方式或第二种可能的实现方式，在第三种可能的实现方式中，所述TC接收的优化指令中包含单条业务的标识信息、以及针对所述单条业务的优化策略，则所述TC按照所述优化指令中的优化策略对所述优化指令中标识业务进行优化具体包括：所述TC按照所述优化指令中的优化策略对所述单条业务进行优化。
结合第一方面的第一种可能的实现方式或第二种可能的实现方式，在第四种可能的实现方式中，所述TC接收的优化指令中包含多条业务的标识信息、以及针对所述多条业务的优化策略，则所述TC按照所述优化指令中的优化策略对所述优化指令中标识业务进行优化具体包括：所述TC按照所述优化 指令中的优化策略对所述多条业务进行优化。
结合第一方面至第四种可能的实现方式中任意一项，在第五种可能的实现方式中，所述路由信息携带有所述业务所经过的节点的节点信息，所述节点包括起始节点和终结点；所述TC判断资源池中的空闲资源是否能满足所述CC的优化需求具体包括：判断所述资源池中所述起始节点和终结点之间的空闲资源是否满足所述CC的优化需求。
根据本发明实施例的第二方面，提供一种业务优化方法，包括：
传送网控制器TC接收来自客户控制器CC的优化请求，所述优化请求携带有业务的标识信息、所述业务需经过的路由信息以及授权信息，所述授权信息用于授权所述TC直接完成业务优化；
所述TC在判断资源池中的空闲资源能满足所述CC的优化需求时，按照符合所述CC的优化需求的优化策略，对所述优化请求中标识的业务进行优化。
结合第二方面，在第一种可能的实现方式中，所述按照符合所述CC的优化需求的优化策略，对所述优化请求中标识的业务进行优化包括：使用所述资源池中的空闲资源将所述优化指令中标识的业务无中断调整至所述需经过的路由。
结合第二方面或第二方面的第一种可能的实现方式，在第二种可能的实现方式中，所述符合所述CC的优化需求的优化策略用于指示先建后拆。
结合第二方面，在第三种可能的实现方式中，所述优化请求中还携带有针对具体业务的中断策略，所述方法还包括：所述TC在判断资源池中的空闲资源不能满足所述CC的优化需求时，按照符合所述中断策略的优化策略，对所述优化请求中标识的业务进行优化。
结合第二方面第三种可能的实现方式，在第四种可能的实现方式中，所述按照符合所述中断策略的优化策略，对所述优化请求中标识的业务进行优化包括：所述TC按照所述中断策略中断具体业务，以释放网络资源；所述TC将未被中断的业务，无中断调整至需经过的路由。
结合第二方面第四种可能的实现方式，在第五种可能的实现方式中，所述按照符合所述中断策略的优化策略，对所述优化请求中标识的业务进行优化还包括：所述TC为已被中断的业务建立需经过的路由。
根据本发明实施例的第三方面，提供一种业务优化方法，包括：
客户控制器CC向传送网控制器TC发送优化请求；所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；
所述CC接收所述TC返回的应答消息，所述应答消息携带有业务的标识信息和相应的优化策略；
所述CC向所述TC发送优化指令，所述优化指令携带有业务的标识信息以及相应的优化策略；所述优化指令用于所述TC按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化；
在所述TC判断资源池中的空闲资源能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
结合第三方面，在第一种可能的实现方式中，所述优化请求中还携带有针对具体业务的中断策略；在所述TC判断资源池中的空闲资源不能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述中断策略的优化策略。
根据本发明实施例的第四方面，提供一种传输网控制器，包括：
第一数据接收器，用于接收来自客户控制器CC的优化请求，所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；
数据发送器，用于在处理器判断资源池中的空闲资源能满足所述CC的优化需求时，向所述CC发送应答消息，所述应答消息携带有业务的标识信息和相应的优化策略；
第二数据接收器，用于接收所述CC的优化指令，所述优化指令携带有业务的标识信息以及相应的优化策略；以及
处理器，用于按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化；
在所述处理器判断资源池中的空闲资源能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
结合第四方面，在第一种可能的实现方式中，所述优化请求中还携带有针对具体业务的中断策略；在所述TC判断资源池中的空闲资源不能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述中断策略的优化策略。
根据本发明实施例的第五方面，提供一种传输网控制器，包括：
数据接收器，用于接收来自客户控制器CC的优化请求，所述优化请求携带有业务的标识信息、所述业务需经过的路由信息，以及授权信息，所述授权信息用于授权所述TC直接完成业务优化；
处理器，用于在判断资源池中的空闲资源能满足所述CC的优化需求时，按照符合所述CC的优化需求的优化策略，对所述优化请求中标识的业务进行优化。
根据本发明实施例的第六方面，提供一种客户控制器，包括：
第一数据发送器，用于向所连接的传输网控制器TC发送优化请求，所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；
数据接收器，用于接收来自所述TC的携带有业务的标识信息和优化策略的应答消息；以及
第二数据发送器，用于向所述TC发送优化指令，所述优化指令携带有业务的标识信息以及相应的优化策略；所述优化指令用于所述TC按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化；
在所述TC判断资源池中的空闲资源能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
根据本发明实施例的第七方面，提供一种业务优化系统，包括传输网控制器TC以及客户控制器CC；
所述CC，用于向所述TC发送在线优化请求，所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；接收所述TC携带有业务的标识信息和符合所述CC的优化需求的优化策略的应答消息；以及向所述TC发送优化指令，所述优化指令携带有业务的标识信息以及符合所述CC的优化需求的的优化策略；
所述TC，用于在判断资源池中的资源能满足所述CC的优化需求时向所述CC发送所述应答消息，以及按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化。
可见，在本发明实施例中，CC可向TC发送优化请求，以期借助TC资源池内的空闲网络资源。而在资源池中的空闲网络资源能满足CC的优化需求时，TC会执行符合所述CC的优化需求的优化策略，以帮助CC实现业务的无中断优化，从而减少了业务优化过程中的业务中断现象。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的传送网结构示例图；
图2为本发明实施例提供的实际网络拓扑图；
图3-4为本发明实施例提供的虚拟网络拓扑图；
图5为本发明实施例提供的业务分布图；
图6-7为本发明实施例提供的业务优化示例图；
图8为本发明实施例提供的网络虚拟拓扑图；
图9为本发明实施例提供的交互流程图；
图10为本发明实施例提供的网络实际拓扑图；
图11为本发明实施例提供的另一交互流程图；
图12为本发明实施例提供的CC与TC之间的又一交互流程图；
图13为本发明实施例提供的CC与TC之间的又一交互流程图；
图14为本发明实施例提供的CC1管理的网络虚拟拓扑图；
图15为本发明实施例提供的CC与TC之间的又一交互流程图；
图16为本发明实施例提供的CC与TC之间的又一交互流程图；
图17为本发明实施例提供的CC1管理的网络虚拟拓扑图；
图18a、18b、19a、19b、20、21分别为本发明实施例提供的业务优化方法流程图；
图22、23分别为本发明实施例提供的传输网控制器结构示例图；
图24为本发明实施例提供的客户控制器结构示例图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在传送网中，请参见图1，CC(Client Controller，客户控制器)管理传送子网，TC(Transport Controller，传送网控制器)管辖一个或多个CC。
在传送网中，CC相当于租户，物理资源被TC根据租户需求划分成虚拟的网络拓扑，然后提供给租户(CC)，不同CC之间资源互相独立，不会感受到彼此的存在。
例如，实际的(物理)网络拓扑如图2所示，节点A和节点B之间的链 路AB的带宽为10M，节点A和节点B还可通过节点C、节点D相连，并且，链路AC、链路BC、链路AD、链路BD的带宽均为10M。
TC为CC1分配的网络资源如下：链路AB：5M；链路AC：5M；链路BC：5M。则CC1看到的虚拟网络拓扑如图3所示。
TC为CC2分配的网络资源如下：链路AC：5M；链路BC：5M；链路AD：7M；链路BD：7M。则CC2看到的虚拟网络拓扑如图4所示。
CC可控制和管理自己的虚拟网络拓扑资源，例如，CC1可分配路径A-C-B承载业务1，分配路径A-B承载业务2。CC同时具有建立/删除/改变/查询其虚拟网络拓扑资源的能力。未分配给任何业务的资源会放入CC的资源池，由CC统一进行调度管理。
除了维护物理网络资源分配情况以及全局网络拓扑信息，并将未分配给任何CC的资源放入资源池统一进行调度管理外，TC上还记录了各CC当前的虚拟网络资源分配情况。例如，TC上记录了CC1分配路径A-C-B承载业务1，分配路径A-B承载业务2，并且，TC还记录业务1和业务2各自占用的带宽。
在很多情况下，CC需要对业务进行在线优化。
例如，请参见图5，业务1和业务2均从节点A至节点B，业务1走路径A-B，业务2走路径A-C-B(假定业务1和2占用带宽相同，均为10M)。根据用户需求进行在线优化，要求业务1改走路径A-C-B，业务2改走路径A-B。
假定在CC的资源池内路径A-D-B空闲，并且带宽为11M，则请参见图6，可通过如下先建后拆流程来实现在线优化如下：
①，CC为业务1建立路由为A-D-B的路径，之后拆除业务1的路由为A-B的路径；这样，路由为A-B的路径被释放；
②，CC为业务2建立路由为A-B的路径，之后拆除业务2的路由为A-C-B的路径；
③，CC为业务1建立路由为A-C-B的路径，之后拆除业务1的路由为A-D-B的路径。
这样，通过三次先建后拆，可实现业务1改走路径A-C-B，业务2改走 路径A-B。
然而，如果CC所管理的资源池内的资源不足时(当A-D-B的带宽仅为5M时)，则无法进行先建后拆，从而无法在不中断业务的情况下优化网络业务。
此时，请参见图7，现有方式可做如下处理：
①，切断业务1路由为A-B的路径(或切断业务2路由为A-C-B的路径)；
②，为业务2建立路由为A-B的路径，之后拆除业务2的路由为A-C-B的路径；(或为业务1建立路由为A-C-B的路径，之后拆除业务1的路由为A-B的路径)；
③，在业务2释放的路由为A-C-B的路径上建立业务1(或在业务1释放的路由为A-B的路径上建立业务2)。
但图7所示的处理，造成了业务中断。
为此，本发明实施例提供业务优化方案，以减少业务优化过程中的业务中断现象。
本发明实施例所提供的业务优化方案的核心是：CC向TC发送优化请求以期请求TC资源池内的临时资源，TC尽可能分配临时资源帮助CC实现业务无中断优化。
本发明实施例提供的业务优化方案可适应于下述场景。
CC1的网络虚拟拓扑如图8所示，共包含三个节点(A、B、C)和两条业务(业务1和业务2)，假设两业务带宽相同。业务1和业务2均从节点A至节点B，业务1走路径A-B，业务2走路径A-C-B。
现在，根据用户需求进行在线优化，要求业务1改走路径A-C-B，业务2改走路径A-B。
CC1在检查了自己的所有虚拟资源后，判断出如果由CC1在虚拟拓扑上完成业务在线优化(例如，业务1和业务2的对调)，需要中断其中至少一条业务(也即，CC1自身可用虚拟资源无法将业务1和业务2无中断调整至需经过的路径/路由)。则本发明实施例提供的业务优化方案中，CC1与TC之间可有如下 交互流程(请参见图9)：
S901：CC1向TC发送优化请求。
优化请求可携带业务的标识信息(例如业务ID)和业务需经过的路由信息。
更具体的，路由信息可携带有业务所经过的节点的节点信息，该节点包括起始节点(源节点)和终结点(宿节点)。
例如，对于本场景，优化请求可包括如下内容：
业务1，(业务1需经过的路由)A-C-B；
业务2，(业务2需经过的路由)A-B。
在仅需要调整部分路由时，在本发明其他实施例中，上述优化请求可包括业务需经过的路由中相对于当前路径做出调整的部分路由。
前已述及，TC上记录了各CC当前的虚拟网络资源分配情况，因此，优化请求可不包括业务的当前路由(路径)，TC可通过查找记录来得知优化请求中标识的业务的当前路由。
或者，为了节省TC的时间，提高效率，在本发明其他实施例中，上述优化请求也可包括业务的当前路由(路径)。这样TC就不用查找记录了。
S902：TC检查资源池，判断资源池内的空闲资源是否能满足CC的优化需求。
上述资源池可包括TC资源池和CC资源池。
其中，空闲资源可包括源宿节点之间的空闲资源(路径以及路径的带宽)。以优化请求包括“业务1，(业务需经过的路由)A-C-B；业务2，(业务需经过的路由)A-B”为例，TC会检测源宿节点A、B之间的路径，以及路径的带宽。
相应的，判断资源池内的空闲资源是否能满足CC的优化需求可具体包括：判断资源池中起始节点和终结点之间的空闲资源是否满足CC的优化需求。
而CC的优化需求可具体包括：将优化请求中标识的业务无中断调整至业务需经过的路由。
S903：TC发现在业务1的源宿节点间的路由上仍有资源空闲，可以用于帮 助CC1完成无中断在线优化(也即资源池内的空闲资源能满足CC的优化需求)，于是向CC1发送应答消息。
应答消息可携带有业务的标识信息，以及，符合所述CC的优化需求的优化策略。
更具体的，上述优化策略可包括对至少一项业务的路径拆建顺序指示。
假定，请参见图10，TC发现业务1的源宿节点间有路由为A-E-B的路径空闲(路由为A-E-B的路径属于TC资源池内的空闲资源)，则TC向CC1发送的应答消息中可包括：
建立承载业务1的TC路由；
拆除承载业务1的(现有)A-B路由；
建立承载业务2的A-B路由；
拆除承载业务2的(现有)A-C-B路由；
建立承载业务1的A-C-B路由；
拆除承载业务1的TC路由。
需要说明的是，以图10为例，由于路由为A-E-B的路径并非是CC1的虚拟网络拓扑中的路径。所以，应答消息里并不需要包含路由为A-E-B的路径，而简单地用“TC路由”(或其他等价术语)代替。
S904：CC1接受到应答消息后，向TC发起优化指令。
该优化指令携带有业务的标识信息以及符合所述CC的优化需求的优化策略。
优化指令中的优化策略是与应答消息中的优化策略相一致的，可对至少一项业务的路径拆建顺序指示。
S905：TC按照该优化指令中的优化策略对该优化指令中标识的业务进行优化。
更具体的，是使用资源池中的空闲资源将优化指令中标识的业务无中断调整至需经过的路由。
在本发明其他实施例中，TC接收的优化指令中可包含单条业务的标识信 息、以及针对该单条业务的优化策略，则“TC按照该优化指令中的优化策略对该优化指令中标识业务进行优化”可具体包括：
TC按照优化指令中的优化策略对单条业务进行优化。
此外，TC接收的优化指令中也可包含多条业务的标识信息、以及针对该多条业务的优化策略，则“TC按照该优化指令中的优化策略对该优化指令中标识业务进行优化”可具体包括：
TC按照该优化指令中的优化策略对该多条业务进行优化。
如优化指令中携带单条业务的标识信息、以及针对该单条业务的优化策略，则上述步骤S904和S905可进一步细化为多步交互流程。
仍以图10为例，则CC1与TC之间的交互流程可如下：
①CC1发起优化指令，指示TC“建立承载业务1的TC路由”(建立承载业务1的TC路由即为优化策略)。
②TC使用TC资源池里的空闲资源作为临时资源，为业务1建立路由为A-E-B的路径。TC完成后，向CC1发送完成消息。
需要说明的是，CC1是不知道TC使用路由为A-E-B的路径作为临时资源的。CC1只需要指示TC对业务1建立TC路由，由TC决定使用哪一路径。
③CC1接收到完成消息后，发起优化指令，指示TC“拆除承载业务1的A-B路由”。
④TC在CC1租用的虚拟网络中拆除业务1的路由为A-B的路径。TC完成后，向CC1发送完成消息。
在拆除业务1的路由为A-B的路径后，CC1的资源池内当前的空闲资源刷新为包含路由为A-B的路径。
⑤CC1接收到完成消息后，再次发起优化指令，指示TC“建立承载业务2的A-B路由”。
⑥接收到指示“建立承载业务2的A-B路由”的优化指令后，TC使用CC1租用的网络中的资源(也即使用CC1资源池内的空闲资源)，为业务2建立路由为A-B的路径。TC完成后，向CC1发送完成消息。
⑦CC1接收到完成消息后，再次发起优化指令，指示TC“拆除承载业务2的A-C-B路由”。
⑧TC在CC1租用的网络中拆除业务2的路由为A-C-B的路径。TC完成后，向CC1发送完成消息。
而在拆除业务2的路由为A-C-B的路径后，CC1的资源池内当前的空闲资源刷新为包含路由为A-C-B的路径。
⑨CC1接收到完成消息后，再次发起优化指令，指示TC“建立承载业务1的A-C-B路由”；
⑩TC使用CC1租用的网络中的资源(也即使用CC1资源池内的空闲资源)，为业务1建立路由为A-C-B的路径。TC完成后，向CC1发送完成消息。
Figure PCTCN2014088473-appb-000001
CC1接收到完成消息后，再次发起优化指令，指示TC“拆除承载业务1的TC路由”；
Figure PCTCN2014088473-appb-000002
TC拆除业务1的路由为A-E-B的路径(也即，收回临时资源)。TC完成后，向CC1发送完成消息。
先建后拆的具体实现方式可以参考现有技术，在此不作赘述。
可见，通过上述交互，业务1和业务2都不需要中断即可完成优化。
当然，上述步骤S903-S905是在资源池内的空闲资源能满足CC的优化需求时才执行的。若资源池内的空闲资源不能满足CC的优化需求，TC可返回优化失败消息。其对应的交互流程可参见图11。
或者，在本发明其他实施例中，上述优化请求中还可包括授权信息，该授权信息用于授权传送网控制器直接完成业务优化。这样，TC与CC之间则不需要交互应答消息和优化指令来完成在线优化。
更具体的，上述优化请求中可设置授权标志位，通过对授权标志位置0和1表明是否可授权。例如，置0表明不授权，置1表示授权，或者，置0表明授权，置1表明不授权。
则在优化请求中包括授权信息的情况下，请参见图12，在本发明实施例提供的业务优化方案中，CC1与TC之间可有如下交互流程：
S1201：CC1向TC发送优化请求。该优化请求中携带有包括业务ID、业务 需经过的路由和授权信息。
步骤S1201与步骤S901相类似，在此不作赘述。
S1202：TC检查资源池，判断资源池内的空闲资源是否能满足CC的优化需求。
步骤S1202与步骤S902相类似，在此不作赘述。
S1203：TC发现资源池内的空闲资源能满足CC的优化需求，按照符合所述CC的优化需求的优化策略，对该优化请求中标识的业务进行优化。
更具体的，上述“按照符合所述CC的优化需求的优化策略，对该优化请求中标识的业务进行优化”可包括：使用该资源池中的空闲资源将该优化请求中标识的业务无中断调整至该需经过的路由。
在图8和图10所示场景下，TC进行的在线优化如下：
①TC使用TC资源池里的资源作为临时资源，为业务1建立路由为A-E-B的路径，之后TC在CC1租用的虚拟网络中拆除业务1的路由为A-B的路径。
②TC使用CC1租用的网络中的资源，为业务2建立路由为A-B的路径，之后TC在CC1租用的网络中拆除业务2的路由为A-C-B的路径。
③TC使用CC1租用的网络中的资源，为业务1建立路由为A-C-B的路径，之后TC拆除业务1的路由为A-E-B的路径(也即，收回临时资源)。TC完成后，向CC1发送调整成功消息。
先建后拆的具体实现方式可以参考现有技术，在此不作赘述。
通过上述交互，业务1和业务2都不需要中断即可完成优化。
需要指出的是，上述步骤S1203是在资源池内的空闲资源能满足CC的优化需求时才执行的。若资源池内的空闲资源不能满足CC的优化需求，则TC可返回优化失败消息。
可见，在本发明实施例中，CC可向TC发送优化请求，以期借助TC资源池内的空闲网络资源。而在资源池中的空闲网络资源能满足CC的优化需求时，TC会执行符合所述CC的优化需求的优化策略，以帮助CC实现业务的无中断优化，从而减少了业务优化过程中的业务中断现象。
在上述所有实施例中，若资源池内的空闲资源不能满足CC的优化需求，请参见图13，则TC将返回优化失败消息。
在本发明下述实施例中，优化请求还可包括针对具体业务的中断策略，该中断策略用于指示优化请求标识的业务中允许被中断的业务(可简称为中断业务)。TC可根据中断策略，重新寻找符合CC要求的业务优化方案。
进一步的，当有至少两项可中断业务时，上述中断策略还用于指示上述至少两项可中断业务的中断顺序。
例如，共有5项业务D1-D5，其中的D1-D3为可中断业务，则中断策略还可指示D1-D3的中断顺序，假定中断顺序为D2、D3、D1，则后续TC可按照D2->D3->D1的顺序中断这三项业务。
CC在制定中断策略，可考虑多方面要求。以考虑业界常见的规则为例，CC可按照下述原则制定中断策略：
业务如果有业务优先级，优先中断业务优先级低的业务；
在同业务优先级的业务中，优先中断占用关键路径的业务；
在同业务优先级、占用相同关键路径的业务中，优先中断带宽大的业务；
在前述条件相同的情况下，优先中断占用资源(如跳数)多的业务。
更具体的，可以用中断优先级来表示中断顺序。例如，D1-D3的中断优先级为D2>D3>D1，则优先中断D2。
当然，在制定中断策略时，还可考虑其他方面，本发明对中断策略的制定规则不作限定。
下面将以另一场景为例，介绍在资源池中的资源不能满足该CC的优化需求，TC如何根据中断策略，重新寻找符合CC要求的业务优化方案。
请考虑如下场景：图14为CC1管理的虚拟网络拓扑。上述虚拟网络拓扑共有五条链路，各链路的带宽分布为：链路1-2、2-3分别为7G；链路1-4、1-3、4-3分别为10G。
目前网络中有三条业务D1-D3，其中，D1(路由为1-2-3)占用带宽3G， D2(路由1-3)占用带宽10G，D3(路由1-4-3)占用带宽7G。
CC1期望优化后，D1与D3需经过的路由为1-3，D2需经过的路由为1-4-3。
在优化请求携带中断策略的情况下，请参见图15，本发明实施例提供的业务优化方案中，CC1与TC之间可有如下交互流程：
S1501：CC1向TC发送优化请求。该优化请求中携带业务ID、路由信息、授权信息以及中断策略。
如沿用前例，优化请求中所携带的业务ID和相应的需经过的路由包括：
业务D1：(业务需经过的路由)1-3；
业务D2：(业务需经过的路由)1-4-3；
业务D3：(业务需经过的路由)1-3。
而中断策略中的中断优先顺序为D2、D3、D1。
S1502：TC判断资源池中的空闲资源不能满足该CC的优化需求，按照符合该中断策略的优化策略，对该优化请求中标识的业务进行优化。
上述“按照符合该中断策略的优化策略，对该优化请求中标识的业务进行优化”的具体实现方式可包括：
TC按照该中断策略中断具体业务，以释放网络资源；
TC将未被中断的业务，无中断调整至需经过的路由。
需要说明的是，当中断策略指示了业务的中断顺序时，TC可按中断策略所指示的中断顺序，依次中断具体业务，直至满足无中断优化条件，或直至所有可中断业务均已被中断但仍无法满足上述无中断优化条件。
其中，上述无中断优化条件可包括“资源池内的空闲网络资源支持至少一项业务无中断调整至需经过的路由”。
仍沿用前例，请参见图14，TC可遵照中断策略优先中断业务D2。中断业务D2后，可释放链路1-3的10G带宽，则CC1的资源池中的空闲网络资源可支持至少一项业务(业务D1和D3)无中断调整至需经过的路由，从而满足上述无中断优化条件。
之后，TC使用资源池中的空闲资源通过先建后拆方式，将未被中断的业 务(也即业务D1和D3)无中断调整至需经过的路由。
TC中断了业务D2后，所进行的先建后拆包括：
①对业务D1进行先建后拆，其路由从1-2-3调整为1-3；
更具体的，TC使用CC租用的网络中的资源(链路1-3)，为业务D1建立路由为1-3的路径，之后TC在CC租用的网络中拆除业务D1的路由为1-2-3的路径。
②对业务D3进行先建后拆，路由由1-4-3调整为1-3。
更具体的，TC使用CC租用的网络中的资源(业务链路1-3)，为业务D1建立路由为1-3的路径，之后TC在CC租用的网络中拆除业务D3的路由为1-4-3的路径。
S1503：对于已被中断的业务(业务D2)，TC所进行的业务优化可包括：为已被中断的业务建立需经过的路由。
沿用前例，由于TC拆除了业务D2，则在业务D1和D3完成先建后拆后(此时路由为1-4-3的路径已释放)，TC为业务D2建立路由为1-4-3的路由。
S1502-S1503也可总结为：TC在判断资源池中的当前空闲资源不能满足该CC的优化需求、但按照中断策略中断具体业务后满足无中断优化条件时，按照符合中断策略的优化策略，对该优化请求中标识的业务进行优化。
在本发明其他实施例中，如优化请求中未包含授权信息，则针对图14所示场景，TC与CC1之间可通过应答消息和优化指令，完成业务中断(拆除)，先建后拆，重建已被中断的业务等。
只是在本实施例中，应答消息所携带的优化策略为符合中断策略的优化策略。
仍沿用前例，TC向CC1返回的应答消息中可携带如下内容：
拆除承载业务D2的路由1-3；
建立承载业务D1的路由1-3；
拆除承载业务D1的(现有)路由1-2-3；
建立承载业务D3的路由1-3；
拆除承载业务D3的(现有)路由1-4-3；
建立承载业务D2的路由1-4-3。
CC则会依据应答报文发起相应的优化指令。具体细节请参见本文前述记载，在此不作赘述。
此外，在本发明其他实施例中，请参见图16，若TC中断所有可中断业务后仍无法满足无中断优化条件时，TC可返回优化失败消息。
或者也可说，TC在判断资源池中的当前空闲资源不能满足该CC的优化需求、并且按照中断策略中断具体业务后仍不满足无中断优化条件时，返回优化失败消息。
本发明实施例下面将提供更为复杂的业务优化方案，在该方案中，可将一部分业务进行无中断优化，而对另一部分业务中断后重建。
例如，图17为本实施例中CC1管理的虚拟网络拓扑。上述虚拟网络拓朴共有五条链路，各链路的带宽分布为：链路1-3、1-4、3-4链路带宽为10G；链路1-2、2-3两条链路带宽分别为7G。
虚拟网络共中有四条业务，其中各业务的当前路径和所期望优化后业务需经过的路由如下：
D1(带宽6G):当前路径1-2-3，优化后业务需经过的路由1-3；
D2(带宽3G):当前路径1-3；优化后业务需经过的路由1-4-3；
D3(带宽4G):当前路径1-4-3；优化后业务需经过的路由1-3；
D4(带宽7G):当前路径1-3；优化后业务需经过的路由1-2-3。
在优化请求包括中断策略的场景下，本发明实施例提供的业务优化方案中，CC1与TC之间可有如下交互流程：
步骤1701：CC1向TC发送优化请求。该优化请求中携带业务ID、路由信息、授权信息以及中断策略。
假定，中断策略指示的中断顺序为D1、D2、D3、D4。
步骤1702：TC检查资源池内的空闲资源，判断资源池内的空闲资源是否能满足CC的优化需求。
假定，TC发现TC资源池在源宿节点之间的路径1-4-3上有4G资源，其他位置均无资源。为方便起见后续称这份资源为资源X。资源X对于CC1是不可见的。
步骤1703：TC使用资源X作为临时资源，通过先建后拆方式对至少一项业务(业务D2和D3)进行在线优化。
TC进行的在线优化如下：
①TC将业务D3先建后拆，承载在临时资源X上。
②TC使用CC1租用的网络中的资源，为业务D2建立路由为1-4-3的路径，之后TC在CC1租用的网络中拆除业务D2原路由为1-3的路径。
步骤1704：TC检查资源池内的空闲资源，判断是否满足上述无中断优化条件。
步骤1705：TC发现不满足无中断优化条件，按照中断策略中断业务以释放网络资源。
在完成步骤1703后，链路1-3空闲3G，链路1-4-3空闲1G，链路1-2-3空闲1G。而D1要占用6G带宽，D4要占用7G带宽，当前空闲网络资源不足以支持任一业务无中断调整至需经过的路由，因此TC遵照中断策略中的中断顺序，中断业务D1，释放路由为1-2-3的路径的6G带宽。
步骤1706：TC检查资源池内的空闲资源，判断是否满足无中断优化条件。
步骤1707：TC发现满足上述无中断优化条件，使用空闲网络资源通过先建后拆方式对至少一项业务(业务D4)进行在线优化。
在将业务D1中断后，链路1-3上面空闲3G，路径1-4-3上面空闲1G，路径1-2-3上面空闲7G，可以调整D4至需经过的路由。于是先建后拆将业务D4调整至路由为1-2-3的路由，并释放业务D4原路由为1-3的路径。
之后，TC通过先建后拆，将承载在临时资源X上的业务D3调整至路由1-3。
步骤1708：对于已被中断的业务(业务D1)，TC为其建立相应的需经过的路由(为业务D1建立路由1－3)。
在本发明其他实施例中，如优化请求中未包含授权信息，则针对图17所示场景，TC与CC1之间，可通过应答消息和优化指令，完成业务中断(拆除)，先建后拆，重建已被中断的业务等。
在通过应答消息和优化指令完成在线优化时，TC可预测先建后拆以及中断某业务后的空闲网络资源，从而制定出一整套的拆除顺序，针对本场景，TC下发的应答消息可包括：
建立承载业务D3的TC路由；
拆除承载业务D3的(现有)1-4-3路由；
建立承载业务D2的1-4-3路由；
拆除承载业务D2的(现有)1-3路由；
拆除承载业务D1的(现有)1-2-3路由；
建立承载业务D4的1-2-3路由；
拆除承载业务D4的(现有)1-3路由；
建立承载业务D3的1-3路由；
拆除承载业务D3的TC路由；
建立承载业务D1的1-3路由。
CC则会依据应答报文发起相应的优化指令。相关细节请参考本文前述记载，在此不作赘述。
以上所有实施例中，CC与TC之间的通信可基于PCE(Path Computation Element，路径计算单元)与PCC(Path Computation Client，路径计算客户)的协议—PCEP(PCE Protocol，路径计算单元协议)来实现。当然，CC与TC之间的通信还可基于其他通信协议来完成。
而PCE与PCC之间，也可采用与以上实施例相类似的方式来实现业务优化。
综合以上的实施例，在本发明其他实施例中，参见图18a，由TC侧执行的业务优化方法可包括如下步骤：
S1、接收优化请求；
其中，优化请求可以是CC在自身可用虚拟资源无法将业务无中断调整至业务需经过的路由时触发发送的。
上述优化请求至少携带业务标识和业务需经过的路由。
S2、上述TC在判断资源池中的空闲资源能满足上述CC的优化需求时，向上述CC发送应答消息，上述应答消息携带有业务的标识信息和符合所述CC的优化需求的优化策略。
S3、上述TC接收上述CC的优化指令，上述优化指令携带有业务的标识信息以及符合所述CC的优化需求的优化策略；
S4、上述TC按照上述优化指令中的优化策略对上述优化指令中标识的业务进行优化。
在本发明其他实施例中，若优化请求中还携带有授权信息，参见图18b，则由TC侧执行的业务优化方法可包括如下步骤：
S1、接收优化请求；
上述优化请求携带有业务的标识信息、上述业务需经过的路由信息以及授权信息，上述授权信息用于授权上述TC直接完成业务优化。
S2’、上述TC在判断资源池中的空闲资源能满足上述CC的优化需求时，按照符合所述CC的优化需求的优化策略，对上述优化请求中标识的业务进行优化。
若优化请求中包括中断策略(中断策略相关内容可参见本文前述记载)，请参见图19a，由TC侧执行的业务优化方法还可包括：
S5、上述TC在判断资源池中的空闲资源不能满足上述CC的优化需求时，向上述CC发送携带有业务的标识信息和符合上述中断策略的优化策略的应答消息。
更具体的，TC在判断资源池中的空闲资源不能满足上述CC的优化需求，但按中断策略中断具体业务后可满足无中断优化条件时，向上述CC发送携带有业务的标识信息和符合上述中断策略的优化策略的应答消息。
S6、上述TC接收上述CC的优化指令，上述优化指令携带有业务的标识信息以及符合中断策略的优化策略；
S7、上述TC按照上述优化指令中的优化策略对上述优化指令中标识的业务进行优化。
在本发明其他实施例中，若优化请求中还携带有授权信息和中断策略，则请参见图19b，则由TC侧执行的业务优化方法可包括如下步骤：
S3’、上述TC在判断资源池中的空闲资源不能满足上述CC的优化需求时，按照符合上述中断策略的优化策略，对上述优化请求中标识的业务进行优化。
更具体的，TC在判断资源池中的空闲资源不能满足上述CC的优化需求，但按中断策略中断具体业务后可满足无中断优化条件时，按照符合上述中断策略的优化策略，对上述优化请求中标识的业务进行优化。
更具体的，上述按照符合上述中断策略的优化策略，对上述优化请求中标识的业务进行优化可包括：
上述TC按照上述中断策略中断具体业务，以释放网络资源；
上述TC将未被中断的业务，无中断调整至需经过的路由。
在本发明其他实施例中，上述所有实施例中“按照符合上述中断策略的优化策略，对上述优化请求中标识的业务进行优化”还可包括：
上述TC为已被中断的业务建立需经过的路由。
而在中断所有的可中断业务后仍不满足前述无中断优化条件时，由TC侧执行的业务优化方法还可包括：返回优化失败消息。
图20从另一角度描述了业务优化方法的过程。
具体细节请参见本文前述记载，在此不作赘述。
与之对应，请参见图21，由CC侧执行的业务优化方法可包括如下步骤：
S211、CC向TC发送优化请求；上述优化请求携带有业务的标识信息和上述业务需经过的路由信息；
S212、上述CC接收上述TC返回的应答消息，上述应答消息携带有业务的标识信息和相应的优化策略；
S213、上述CC向上述TC发送优化指令，上述优化指令携带有业务的标识信息以及相应的优化策略；上述优化指令用于上述TC按照上述优化指令中的优化策略对上述优化指令中标识的业务进行优化。
在上述TC判断资源池中的空闲资源能满足上述CC的优化需求时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
在本发明其他实施例中，上述优化请求中还可携带有针对具体业务的中断策略。则在上述TC判断资源池中的空闲资源不能满足上述CC的优化需求时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合上述中断策略的优化策略。
更具体的，在TC判断资源池中的空闲资源不能满足上述CC的优化需求，但按中断策略中断具体业务后可满足无中断优化条件时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合上述中断策略的优化策略。
与之对应，本发明实施例还要求保护传输网控制器(TC)。请参见图22，上述TC可包括：
第一数据接收器2201，用于接收来自客户控制器CC的优化请求，上述优化请求携带有业务的标识信息和上述业务需经过的路由信息；
数据发送器2202，用于在处理器2204判断资源池中的空闲资源能满足上述CC的优化需求时，向上述CC发送应答消息，上述应答消息携带有业务的标识信息和相应的优化策略；
第二数据接收器2203，用于接收上述CC的优化指令，上述优化指令携带有业务的标识信息以及相应的优化策略；以及
处理器2204，用于按照上述优化指令中的优化策略对上述优化指令中标识的业务进行优化。
在上述处理器2204判断资源池中的空闲资源能满足上述CC的优化需求时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
在本发明其他实施例中，上述所有实施例中的优化请求中还可携带有针对具体业务的中断策略。则在上述处理器2204判断资源池中的空闲资源不能满足上述CC的优化需求时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合上述中断策略的优化策略。
更具体的，在处理器2204判断资源池中的空闲资源不能满足上述CC的优化需求，但按中断策略中断具体业务后可满足无中断优化条件时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合上述中断策略的优化策略。
具体细节请参见本文前述记载，在此不作赘述。
请参见图23，为上述传输网控制器的另一种结构，其可包括：
数据接收器2301，用于接收来自客户控制器CC的优化请求，上述优化请求携带有业务的标识信息、上述业务需经过的路由信息以及授权信息，所述授权信息用于授权所述TC直接完成业务优化；
处理器2302，用于在判断资源池中的空闲资源能满足上述CC的优化需求时，按照符合所述CC的优化需求的优化策略，对上述优化请求中标识的业务进行优化。
在本发明其他实施例中，上述所有实施例中的优化请求中还可携带有针对具体业务的中断策略。则上述处理器2302还可用于，在判断资源池中的空闲资源不能满足上述CC的优化需求时，按照符合中断策略的优化策略，对上述优化请求中标识的业务进行优化。
具体细节请参见本文前述记载，在此不作赘述。
与之对应，本发明实施例还要求保护客户控制器(CC)。请参见图24，上述CC可包括：
第一数据发送器2401，用于向所连接的TC发送优化请求，上述优化请求携带有业务的标识信息和上述业务需经过的路由信息；
数据接收器2402，用于接收来自上述TC的携带有业务的标识信息和优化策略的应答消息；以及
第二数据发送器2403，用于向上述TC发送优化指令，上述优化指令携带有业务的标识信息以及相应的优化策略；上述优化指令用于上述TC按照上述优化指令中的优化策略对上述优化指令中标识的业务进行优化。
需要说明的是，在上述TC判断资源池中的空闲资源能满足上述CC的优化需求时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
在本发明其他实施例中，上述所有实施例中的优化请求中还可携带有针对具体业务的中断策略。则在TC判断资源池中的空闲资源不能满足上述CC的优化需求时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合上述中断策略的优化策略。
更具体的，在TC判断资源池中的空闲资源不能满足上述CC的优化需求，但按中断策略中断具体业务后可满足无中断优化条件时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合上述中断策略的优化策略。
具体细节请参见本文前述记载，在此不作赘述。
与之对应，本发明实施例还要求保护业务优化系统，包括传输网控制器(TC)以及客户控制器(CC)。
上述CC，用于向上述TC发送在线优化请求，上述优化请求携带有业务的标识信息和上述业务需经过的路由信息；接收上述TC携带有业务的标识信息和相应的优化策略的应答消息；以及向上述TC发送优化指令，上述优化指令携带有业务的标识信息以及相应的优化策略；
上述TC，用于在判断资源池中的资源能满足上述CC的优化需求时向上述CC发送上述应答消息，以及按照上述优化指令中的优化策略对上述优化指令中标识的业务进行优化。
需要说明的是，在上述TC判断资源池中的空闲资源能满足上述CC的优化需求时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
在本发明其他实施例中，上述所有实施例中的优化请求中还可携带有针对具体业务的中断策略。则在TC判断资源池中的空闲资源不能满足上述CC的优化需求时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合上述中断策略的优化策略。
更具体的，在TC判断资源池中的空闲资源不能满足上述CC的优化需求，但按中断策略中断具体业务后可满足无中断优化条件时，上述应答消息携带的优化策略和上述优化指令携带的优化策略均为符合上述中断策略的优化策略。
具体细节请参见本文前述记载，在此不作赘述。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例提供的装置而言，由于其与实施例提供的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。
还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、 “包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到本发明可借助软件加必需的通用硬件的方式来实现，通用硬件包括通用集成电路、通用CPU、通用存储器、通用元器件等，当然也可以通过专用硬件包括专用集成电路、专用CPU、专用存储器、专用元器件等来实现，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在可读取的存储介质中，如U盘、移动存储介质、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储软件程序代码的介质，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例的方法。
对所提供的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所提供的原理和新颖特点相一致的最宽的范围。

Claims (19)

  1. 一种业务优化方法，其特征在于，包括：
    传送网控制器TC接收来自客户控制器CC的优化请求，所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；
    所述TC在判断资源池中的空闲资源能满足所述CC的优化需求时，向所述CC发送应答消息，所述应答消息携带有业务的标识信息和符合所述CC的优化需求的优化策略；
    所述TC接收所述CC的优化指令，所述优化指令携带有业务的标识信息以及相应的符合所述CC的优化需求的优化策略；
    所述TC按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化。
  2. 如权利要求1所述的方法，其特征在于，所述符合所述CC的优化需求的优化策略，用于指示先建后拆。
  3. 如权利要求1所述的方法，其特征在于，所述优化请求中还携带有针对具体业务的中断策略，所述方法还包括：
    所述TC在判断资源池中的空闲资源不能满足所述CC的优化需求时，向所述CC发送携带有业务的标识信息和符合所述中断策略的优化策略的应答消息；
    所述TC接收所述CC的优化指令，所述优化指令携带有业务的标识信息以及相应的符合所述中断策略的优化策略；
    所述TC按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化。
  4. 如权利要求2或3所述的方法，其特征在于，所述TC接收的优化指令中包含单条业务的标识信息、以及针对所述单条业务的优化策略，则所述TC按照所述优化指令中的优化策略对所述优化指令中标识业务进行优化具体包括：
    所述TC按照所述优化指令中的优化策略对所述单条业务进行优化。
  5. 如权利要求2或3所述的方法，其特征在于，所述TC接收的优化指令中包含多条业务的标识信息、以及针对所述多条业务的优化策略，则所述TC按照所述优化指令中的优化策略对所述优化指令中标识业务进行优化具体包括：
    所述TC按照所述优化指令中的优化策略对所述多条业务进行优化。
  6. 如权利要求1-5任意一项所述的方法，其特征在于，所述路由信息携带有所述业务所经过的节点的节点信息，所述节点包括起始节点和终结点；所述TC判断资源池中的空闲资源是否能满足所述CC的优化需求具体包括：判断所述资源池中所述起始节点和终结点之间的空闲资源是否满足所述CC的优化需求。
  7. 一种业务优化方法，其特征在于，包括：
    传送网控制器TC接收来自客户控制器CC的优化请求，所述优化请求携带有业务的标识信息、所述业务需经过的路由信息以及授权信息，所述授权信息用于授权所述TC直接完成业务优化；
    所述TC在判断资源池中的空闲资源能满足所述CC的优化需求时，按照符合所述CC的优化需求的优化策略，对所述优化请求中标识的业务进行优化。
  8. 如权利要求7所述的方法，其特征在于，所述按照符合所述CC的优化需求的优化策略，对所述优化请求中标识的业务进行优化包括：
    使用所述资源池中的空闲资源将所述优化指令中标识的业务无中断调整至所述需经过的路由。
  9. 如权利要求7或8所述的方法，其特征在于，所述符合所述CC的优化需求的优化策略用于指示先建后拆。
  10. 如权利要求7所述的方法，其特征在于，所述优化请求中还携带有针对具体业务的中断策略，所述方法还包括：
    所述TC在判断资源池中的空闲资源不能满足所述CC的优化需求时，按照符合所述中断策略的优化策略，对所述优化请求中标识的业务进行优化。
  11. 如权利要求10所述的方法，其特征在于，所述按照符合所述中断策略的优化策略，对所述优化请求中标识的业务进行优化包括：
    所述TC按照所述中断策略中断具体业务，以释放网络资源；
    所述TC将未被中断的业务，无中断调整至需经过的路由。
  12. 如权利要求11所述的方法，其特征在于，所述按照符合所述中断策略的优化策略，对所述优化请求中标识的业务进行优化还包括：
    所述TC为已被中断的业务建立需经过的路由。
  13. 一种业务优化方法，其特征在于，包括：
    客户控制器CC向传送网控制器TC发送优化请求；所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；
    所述CC接收所述TC返回的应答消息，所述应答消息携带有业务的标识信息和相应的优化策略；
    所述CC向所述TC发送优化指令，所述优化指令携带有业务的标识信息以及相应的优化策略；所述优化指令用于所述TC按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化；
    在所述TC判断资源池中的空闲资源能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
  14. 如权利要求13所述方法，其特征在于，
    所述优化请求中还携带有针对具体业务的中断策略；
    在所述TC判断资源池中的空闲资源不能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述中断策略的优化策略。
  15. 一种传输网控制器，其特征在于，包括：
    第一数据接收器，用于接收来自客户控制器CC的优化请求，所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；
    数据发送器，用于在处理器判断资源池中的空闲资源能满足所述CC的优化需求时，向所述CC发送应答消息，所述应答消息携带有业务的标识信息和相应的优化策略；
    第二数据接收器，用于接收所述CC的优化指令，所述优化指令携带有业务的标识信息以及相应的优化策略；以及
    处理器，用于按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化；
    在所述处理器判断资源池中的空闲资源能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
  16. 如权利要求15所述的传输网控制器，其特征在于，
    所述优化请求中还携带有针对具体业务的中断策略；
    在所述TC判断资源池中的空闲资源不能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述中断策略的优化策略。
  17. 一种传输网控制器，其特征在于，包括：
    数据接收器，用于接收来自客户控制器CC的优化请求，所述优化请求携带有业务的标识信息、所述业务需经过的路由信息以及授权信息，所述授权信息用于授权所述TC直接完成业务优化；
    处理器，用于在判断资源池中的空闲资源能满足所述CC的优化需求时，按照符合所述CC的优化需求的优化策略，对所述优化请求中标识的业务进行优化。
  18. 一种客户控制器，其特征在于，包括：
    第一数据发送器，用于向所连接的传输网控制器TC发送优化请求，所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；
    数据接收器，用于接收来自所述TC的携带有业务的标识信息和优化策略的应答消息；以及
    第二数据发送器，用于向所述TC发送优化指令，所述优化指令携带有业务的标识信息以及相应的优化策略；所述优化指令用于所述TC按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化；
    在所述TC判断资源池中的空闲资源能满足所述CC的优化需求时，所述应答消息携带的优化策略和所述优化指令携带的优化策略均为符合所述CC的优化需求的优化策略。
  19. 一种业务优化系统，其特征在于，包括传输网控制器TC以及客户控制器CC；
    所述CC，用于向所述TC发送在线优化请求，所述优化请求携带有业务的标识信息和所述业务需经过的路由信息；接收所述TC携带有业务的标识信息和符合所述CC的优化需求的优化策略的应答消息；以及向所述TC发送优化指令，所述优化指令携带有业务的标识信息以及符合所述CC的优化需求的的优化策略；
    所述TC，用于在判断资源池中的资源能满足所述CC的优化需求时向所述CC发送所述应答消息，以及按照所述优化指令中的优化策略对所述优化指令中标识的业务进行优化。
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