CN108429631A - A kind of method and device of network service instantiation - Google Patents

Abstract

The embodiment of the present invention provides a kind of method and device of network service instantiation, it is related to field of communication technology, it can ensure the resource requirement of high-priority network business as far as possible in the case of inadequate resource, improve the quality of service of high-priority network business in NFV systems.This method includes：OSS receives the request to create of the first NS examples to be created, which is used to indicate the preempting priority of the first NS examples；When creating the inadequate resource needed for the first NS examples, OSS determines the 2nd NS examples for allowing to be preempted resource according to the preempting priority of the first NS examples；OSS sends the capacity reducing request of the 2nd NS examples to NFVO, and capacity reducing request is used to indicate the resource that NFVO pairs of the 2nd NS example occupies and executes capacity reducing operation, to use the first NS examples of asset creation discharged after the 2nd NS example capacity reducings.

Description

A kind of method and device of network service instantiation

Technical field

The present embodiments relate to the method and devices that field of communication technology more particularly to a kind of network service instantiate.

Background technology

As shown in Figure 1, virtualizing (network function virtualization, NFV) system for network function Organization Chart, the NFV systems include：Network function virtualizes scheduling node (network function virtualization Orchestrator, NFVO), virtual network function management node (virtualized network function manager, VNFM), virtual machine infrastructure management node (virtualized infrastructure manager, VIM), operation support System (operations support system, OSS) or business support system (business support system, BSS), NE management node (element manager, EM), virtual network function (virtualized network Function, VNF) node, virtual network function infrastructure (network function virtualization Infrastructure, NFVI) etc. functional nodes.

In NFV systems, NFVO, VNFM and VIM node constitute the management composer (NFV of NFV systems Management and orchestration, NFV-MANO), wherein NFVO is referred to as network function virtualization layout Person.Specifically, VNFM is responsible for the life cycle management of VNF examples, such as instantiation, expansion/contraction, inquiry, update and termination； VIM is the administration portal of infrastructure and resource, and resource management is provided for VNF examples, including is that VNF examples are provided infrastructures The functions such as the configuring maintenance of related hardware and virtualization resource, monitoring resource, alarm, performance management；And NFVO can hold VIM Row management and coordinate etc. operations, NFVO in NFV systems all VIM and VNFM be connected.

One network service (network service, NS) example is usually real by multiple VNF with specific connection relation Example composition, and during creating NS examples (i.e. a NS instantiation), NFVO nodes need corresponding by VNFM applications Resource disposes VNF examples, and defers to the principle of " first come, first served " when VNFM distribution resources, i.e., is received according to VNFM each The sequence of NS instantiation requests is followed successively by different NS example allocations resources, then, in the case of inadequate resource, VNFM can be to NFVO feedback resources application failure news causes NS examples to create failure.So, for important tenant or business NS instance creation process, the method for this NS instantiation will be unable to that its network servicequality is effectively ensured.

Invention content

The application provides a kind of method and device of network service instantiation, can as far as possible be protected in the case of inadequate resource The resource requirement of high-priority network business is demonstrate,proved, the quality of service of high-priority network business in NFV systems is improved.

In order to achieve the above objectives, the application adopts the following technical scheme that：

In a first aspect, a kind of method of network service instantiation is provided, including：OSS receives the first NS examples to be created Request to create, which is used to indicate the preempting priority of the first NS examples；Needed for the first NS examples of establishment Inadequate resource when, OSS can determine the 2nd NS examples that allow to be preempted resource according to the preempting priority of the first NS examples, The preempting priority of 2nd NS examples is less than the preempting priority of the first NS examples；OSS sends the 2nd NS realities to NFVO The capacity reducing request of example, capacity reducing request are used to indicate NFVO and execute capacity reducing operation to the resource that the 2nd NS examples occupy.

Subsequently, after OSS receives the message that the capacity reducing operations of the 2nd NS examples of NFVO transmissions is completed, OSS can be to NFVO sends the instantiation request of the first NS examples, and instantiation request is used to indicate NFVO and executes instantiation operation, to create Above-mentioned first NS examples.

That is, in the higher first NS examples of instantiation preempting priority, if creating the money of the first NS examples It, can be by the lower 2nd NS examples of capacity reducing preempting priority, to discharge a part for the 2nd NS examples occupancy when the deficiency of source Resource creates the first NS examples thereby using the resource of this part release, can not only improve resource utilization, can also use up The possible resource requirement for ensureing high-priority network business, to improve the business of high-priority network business in NFV systems Quality.

In a kind of possible design method, which includes the traffic type information and tenant's letter of the first NS examples Breath；Resource preemptive policy is stored in the OSS, which includes the type of service priority of the first NS examples, rents Correspondence between family priority and preempting priority；Wherein, the establishment for the first NS examples to be created being received in OSS is asked After asking, further include：The OSS according to the traffic type information of the first NS examples, tenant's information and the resource preemptive policy, Determine the type of service priority and tenant's priority of the first NS examples；The OSS is excellent according to the type of service of the first NS examples First grade, tenant's priority and the resource preemptive policy, determination are excellent with the type of service priority of the first NS examples and tenant The corresponding preempting priority of first grade is the preempting priority of the first NS examples.

In a kind of possible design method, which further includes preempting priority and seizes between permission Correspondence；Wherein, which determines that the 2nd NS for allowing to be preempted resource is real according to the preempting priority of the first NS examples Example, including：The OSS searches the preempting priority that preempting priority is less than the first NS examples in the resource preemptive policy, and It is the target service type priority grade for allowing to be preempted and target tenant's priority to seize permission；The OSS will meet the target industry One NS example of service type priority and target tenant's priority, as the 2nd NS examples.

In a kind of possible design method, which further includes preemptive condition, and the preemptive condition is for referring to Show that the NS examples for allowing to be preempted need the performance indicator met；Wherein, the OSS will meet the target service type priority grade and One NS example of target tenant's priority, as the 2nd NS examples, including：The OSS will meet the target service type At least one NS examples of priority and target tenant's priority are as target NS examples；The OSS determines that each target NS is real Whether example meets the preemptive condition；The OSS determined from the target NS examples for meet the preemptive condition NS example be this Two NS examples.

That is, by increasing preemptive condition in resource preemptive policy, it can further limit and be preempted resource The condition of 2nd NS examples causes the quality of service of the 2nd NS examples that can not ensure after avoiding the 2nd NS examples of excessive capacity reducing Problem

In a kind of possible design method, the capacity reducing request of the 2nd NS examples includes resource change mark, the money Source change mark is used to indicate the reason of executing capacity reducing operation to the 2nd NS examples：The resource of 2nd NS examples is robbed It accounts for.

The resource information preservation that the NFVO of capacity reducing request occupies current 2nd NS examples is received in this way, can trigger Get off.After the completion of follow-up first NS examples create, NFVO can also restore the 2nd NS examples according to above-mentioned resource information and be preempted Resource.

In a kind of possible design method, after OSS sends the capacity reducing request of the 2nd NS examples to NFVO, also wrap It includes：OSS sends the dilatation request of the 2nd NS examples to NFVO, and dilatation request is used to indicate NFVO and restores the 2nd NS examples The resource being preempted.

Second aspect provides a kind of method of network service instantiation, including：NFVO receives Operation Support System OSS hairs The capacity reducing of the 2nd NS examples sent is asked, and the preempting priority of the 2nd NS examples is less than the preemptive priority of the first NS examples Grade；NFVO executes capacity reducing operation to the resource that the 2nd NS examples occupy, to use the money discharged after the 2nd NS example capacity reducings Source creates the first NS examples.

In a kind of possible design method, capacity reducing is executed to the resource that the 2nd NS examples occupy in NFVO and operates it Afterwards, further include：NFVO receives the instantiation request for the first NS examples that OSS is sent；NFVO executes instantiation operation, to create First NS examples.

In a kind of possible design method, before NFVO receives the capacity reducing request for the 2nd NS examples that OSS is sent, also Including：NFVO receives the first NS examples that OSS is sent and seizes mark, this seizes mark, and to be used to indicate the first NS example fair Permitted to seize other occupied resources of NS examples；NFVO determines the inadequate resource created needed for the first NS examples；NFVO should The session of first NS examples retains preset time period.

In a kind of possible design method, NFVO executes instantiation operation, to create the first NS examples, including： NFVO executes instantiation operation according to the session of the first NS examples of reservation, to create the first NS examples.

Since the resource of other NS examples can be seized when creating the first NS examples, NFVO is without creating this The meeting hair of first NS examples discharges, but can the session of the first NS examples be retained preset time period.If when preset Between the resource that creates in section needed for the first NS examples it is sufficient, NFVO can use the session of the first reserved NS examples straight Execution instantiation operation is connect, so as to shorten the creation time of the first NS examples.

In a kind of possible design method, the capacity reducing request of the 2nd NS examples includes resource change mark, the money Source change mark is used to indicate the reason of executing capacity reducing operation to the 2nd NS examples：The resource of 2nd NS examples is robbed It accounts for；Wherein, before the resource that NFVO occupies the 2nd NS examples executes capacity reducing operation, further include：NFVO record this second The resource information that NS examples occupy；Wherein, execute instantiation operation in NFVO further includes after creating the first NS examples： NFVO receives the dilatation request for the 2nd NS examples that OSS is sent；The resource that NFVO is occupied according to the 2nd NS examples of record Information restores the resource that the 2nd NS examples are preempted.

The third aspect provides a kind of OSS, including：Acquiring unit, the establishment for receiving the first NS examples to be created are asked It asks, which is used to indicate the preempting priority of the first NS examples；Determination unit, for when the first NS examples of establishment When required inadequate resource, the 2nd NS examples for allowing to be preempted resource are determined according to the preempting priority of the first NS examples, The preempting priority of 2nd NS examples is less than the preempting priority of the first NS examples；Transmission unit is used for network function Virtualization scheduling node NFVO sends the capacity reducing request of the 2nd NS examples, and capacity reducing request is used to indicate NFVO to the 2nd NS The resource that example occupies executes capacity reducing operation, to use the first NS of asset creation discharged after the 2nd NS example capacity reducings real Example.

In a kind of possible design method, which is additionally operable to receive the 2nd NS examples of NFVO transmissions Capacity reducing operation complete message；The transmission unit is additionally operable to send the instantiation request of the first NS examples to the NFVO, should Instantiation request is used to indicate the NFVO and executes instantiation operation, to create the first NS examples.

In a kind of possible design method, which includes traffic type information and the tenant of the first NS examples Information；Resource preemptive policy is stored in the OSS, the resource preemptive policy include the first NS examples type of service priority, Correspondence between tenant's priority and preempting priority；The determination unit is additionally operable to the industry according to the first NS examples Service type information, tenant's information and resource preemptive policy determine that the type of service priority of the first NS examples and tenant are excellent First grade；According to the type of service priority, tenant's priority and resource preemptive policy of the first NS examples, determine and the first NS The type of service priority and the corresponding preempting priority of tenant's priority of example are the preempting priority of the first NS examples.

In a kind of possible design method, which further includes preempting priority and seizes between permission Correspondence；The determination unit, is specifically used for：Preempting priority is searched in the resource preemptive policy is less than the first NS examples Preempting priority, and it is the target service type priority grade for allowing to be preempted and target tenant's priority to seize permission；It will expire One NS example of foot the target service type priority grade and target tenant's priority, as the 2nd NS examples.

In a kind of possible design method, which further includes preemptive condition, and the preemptive condition is for referring to Show that the NS examples for allowing to be preempted need the performance indicator met；The determination unit, is specifically used for：The target service class will be met At least one NS examples of type priority and target tenant's priority are as target NS examples；Determining each target NS examples is It is no to meet the preemptive condition；Determine that one is the 2nd NS examples from the target NS examples for meet the preemptive condition.

In a kind of possible design method, which is additionally operable to send the dilatation of the 2nd NS examples to NFVO Request, dilatation request are used to indicate NFVO and restore the resource that the 2nd NS examples are preempted.

Fourth aspect provides a kind of NFVO, including：Acquiring unit, the capacity reducing of the 2nd NS examples for receiving OSS transmissions Request, the preempting priority of the 2nd NS examples are less than the preempting priority of the first NS examples；Capacity reducing unit, for this The resource that two NS examples occupy executes capacity reducing operation.

In a kind of possible design method, which further includes instantiating unit, the acquiring unit, is additionally operable to receive and be somebody's turn to do The instantiation request for the first NS examples that OSS is sent；The instantiating unit, for executing instantiation operation, with create this One NS examples.

In a kind of possible design method, NFVO further includes determination unit and execution unit, which is additionally operable to It receives the first NS examples that OSS is sent and seizes mark, this, which is seized mark and is used to indicate the first NS examples, allows to seize it His occupied resource of NS examples；The determination unit, for determining the inadequate resource created needed for the first NS examples；The execution Unit, for the session of the first NS examples to be retained preset time period.

In a kind of possible design method, which is specifically used for according to the first NS examples of reservation Session executes instantiation operation, to create the first NS examples.

In a kind of possible design method, the capacity reducing request of the 2nd NS examples includes resource change mark, the money Source change mark is used to indicate the reason of executing capacity reducing operation to the 2nd NS examples：The resource of 2nd NS examples is robbed It accounts for；NFVO further includes recording unit and dilatation unit, the recording unit, the resource letter for recording the 2nd NS examples occupancy Breath；The acquiring unit is additionally operable to receive the dilatation request for the 2nd NS examples that OSS is sent；The dilatation unit, for according to note The resource information that 2nd NS examples of record occupy, restores the resource that the 2nd NS examples are preempted.

5th aspect, provides a kind of OSS, including：Processor, memory, bus and communication interface；The memory is for depositing Computer executed instructions are stored up, which is connect with the memory by the bus, and when the OSS is run, which executes Computer executed instructions of memory storage, so that the OSS is executed as the NS of any one of first aspect is instantiated Method.

6th aspect, provides a kind of NFVO, including：Processor, memory, bus and communication interface；The memory is used for Computer executed instructions are stored, which is connect with the memory by the bus, and when the NFVO is run, which holds Computer executed instructions of row memory storage, so that the NFVO executes the NS instantiations such as any one of second aspect Method.

7th aspect, provides a kind of computer readable storage medium, instruction is stored in the computer readable storage medium, When it runs on above-mentioned NFVO or OSS so that the method that the NFVO or OSS executes the NS instantiations of above-mentioned various aspects.

Eighth aspect provides a kind of computer program, which includes instruction, when the computer program is calculated When machine executes so that the method that computer can execute the NS instantiations of above-mentioned various aspects.

In the embodiment of the present invention, the name of above-mentioned OSS and NFVO do not constitute equipment itself restriction, in practical realization In, these equipment can occur with other titles.As long as the function of each equipment is similar with the embodiment of the present invention, that is, belong to this hair Within the scope of bright claim and its equivalent technologies.

In addition, technique effect caused by any design method can be found in first aspect in second aspect to eighth aspect Technique effect caused by middle different designs mode, details are not described herein again.

These aspects or other aspects of the embodiment of the present invention can more straightforwards in the following description.

Description of the drawings

Fig. 1 is the structural schematic diagram of NFV systems in the prior art；

Fig. 2 is a kind of interaction schematic diagram one of the method for NS instantiations provided in an embodiment of the present invention；

Fig. 3 is a kind of interaction schematic diagram two of the method for NS instantiations provided in an embodiment of the present invention；

Fig. 4 is a kind of interaction schematic diagram three of the method for NS instantiations provided in an embodiment of the present invention；

Fig. 5 is a kind of structural schematic diagram of OSS provided in an embodiment of the present invention；

Fig. 6 is a kind of structural schematic diagram of NFVO provided in an embodiment of the present invention；

Fig. 7 is a kind of hardware architecture diagram one of OSS (or NFVO) provided in an embodiment of the present invention；

Fig. 8 is a kind of hardware architecture diagram two of OSS (or NFVO) provided in an embodiment of the present invention.

Specific implementation mode

Hereinafter, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more this feature.In the description of the embodiment of the present invention, unless otherwise indicated, " multiples' " contains Justice is two or more.

The embodiment of the present invention provides a kind of method of NS instantiations, can be applicable in NFV systems as shown in Figure 1.

Wherein, OSS can be the different priority of different business configurations, i.e. type of service priority in advance, for example, can With the type of service priority of configuration service A for high isopreference level (can be expressed as H), the type of service priority of business B is High medium priority (can be expressed as M), and the type of service priority of business C is low priority (can be expressed as L).

Also, tenant, when ordering a NS example, can be contracted the priority of itself, i.e. tenant's priority by BSS, For example, tenant's priority of tenant 1 is high isopreference level (H), tenant's priority of tenant 2 is high medium priority (M), and tenant 3 Tenant's priority be low priority (L).The information such as tenant's priority can be stored in database (DB, data base).

And OSS can configure the preempting priority of NS examples according to type of service priority and/or tenant's priority, seize Permission and preemptive condition (optional) etc. form resource preemptive policy.The preemptive condition is used to indicate：It is to allow quilt to seize permission The NS examples seized need the performance indicator met.

Illustratively, as shown in table 1, it is a kind of example of resource preemptive policy provided in an embodiment of the present invention.In table 1 In, when tenant's priority is H, and type of service priority is H, preempting priority highest can be configured, i.e. preempting priority is 1, at this point, the NS examples resource of itself is not allowed to be preempted；It, can be with when tenant's priority is H, and type of service priority is M It is 2 to configure preempting priority, at this point, the NS examples resource of itself is not allowed to be preempted yet；When tenant's priority is M, service class When type priority is M, it is 4 that can configure preempting priority, allows the resource of NS examples itself to be preempted at this time, but need to meet Memory is more than the preemptive condition of 1G；……；When tenant's priority is L, and type of service priority is L, it can configure to rob and be dominant First grade is minimum, i.e., preempting priority is 6, allows the resource of NS examples itself to be preempted at this time, and does not have preemptive condition.

Table 1

Permission is seized corresponding to different preempting priorities that is, being indicated in resource preemptive policy, for example, table 1 Shown in include preempting priority, service priority, tenant's priority, preemptive condition in resource preemptive policy and seize power Correspondence between limit.

It should be noted that above-mentioned permission of seizing can also be that tenant configures together in the priority of signing itself, The embodiment of the present invention is not restricted this.

Subsequently, as shown in Fig. 2, when needing to create a NS example, for example, when the first NS examples, BSS sends to OSS and creates The request to create of the first NS examples is built, which may be used to indicate the preempting priority of the first NS examples, be asked for example, creating The type of service priority and tenant's priority of the first NS examples can be carried in asking；In turn, OSS can be interacted with NFVO, with true Whether the resource created needed for the first NS examples surely is sufficient, when OSS, which is determined, creates the inadequate resource needed for the first NS examples, OSS can allow to be preempted resource according to the preempting priority of the first NS examples indicated in above-mentioned request to create, determination 2nd NS examples (preempting priority of the 2nd NS examples is less than the preempting priority of the first NS examples), for example, OSS can basis Above-mentioned type of service priority and tenant's priority determine the preempting priority of the first NS examples, and then are provided according to shown in table 1 Source preemptive policy, it is to allow to be preempted and expire to determine that preempting priority is less than the preempting priority of the first NS examples, seizes permission The NS examples of sufficient preemptive condition are the 2nd NS examples.

In turn, OSS can further send the capacity reducing request of the 2nd NS examples to NFVO, that is, indicate NFVO pairs of the 2nd NS example The resource of occupancy executes capacity reducing operation, and the part resource that the 2nd NS examples are occupied discharges, in this way, the resource that this part is released It can be used for creating above-mentioned first NS examples, then, when creating the resource abundance needed for the first NS examples, OSS is sent to NFVO The instantiation of first NS examples is asked, that is, is indicated that NFVO executes instantiation operation, be finally created that above-mentioned first NS examples.

That is, in the higher first NS examples of instantiation preempting priority, if creating the money of the first NS examples It, can be by the lower 2nd NS examples of capacity reducing preempting priority, to discharge a part for the 2nd NS examples occupancy when the deficiency of source Resource creates the first NS examples thereby using the resource of this part release, can not only improve resource utilization, can also use up The possible resource requirement for ensureing high-priority network business.

In addition, by increasing preemptive condition in resource preemptive policy, it can further limit and be preempted the second of resource The condition of NS examples, after avoiding the 2nd NS examples of excessive capacity reducing, the problem of causing the quality of service of the 2nd NS examples that can not ensure.

It should be noted that in embodiments of the present invention, in above-mentioned NFV systems any one involved functional node or Network element, for example, OSS, BSS, NFVO, VNFM, VIM and VNF, may be realized by an entity device, it is also possible to by multiple entities Equipment realizes that multiple functional nodes in NFV systems may be realized by different entity devices respectively, it is also possible to all by same jointly One entity device is realized.It is understood that any one functional node in NFV systems all may be in entity device One logic functional block a, it is also possible to logic functional block being made of multiple entity devices.

In addition, in embodiments of the present invention, above-mentioned NFV systems can be applied to the 5th following third-generation mobile communication (5rd- Generation, 5G) system, in long term evolution (long term evolution, LTE) communication system, it can also be applied to In the evolution communication systems of LTE, in LTE-A (long term evolution advanced) system, it can also be applied to The 3G (Third Generation) Moblies such as WCDMA (3rd-Generation, 3G) system is medium, and the embodiment of the present invention is not restricted.

In following embodiment of the present invention, in order to more clearly introduce the side of NS instantiations provided in an embodiment of the present invention Method is hereinafter illustrated using logic functional block as executive agent, it will be understood by those skilled in the art that logic function Module need to be dependent on the hardware resource on the entity device where it when implementing.

The method of a kind of NS instantiations provided in an embodiment of the present invention, as shown in figure 3, this method includes：

301, OSS receives the request to create of the first NS examples to be created.

For example, OSS can receive the request to create of the first NS examples to be created of BSS transmissions.

Wherein, which is used to indicate the preempting priority of the first NS examples.For example, can be wrapped in the request to create Traffic type information containing the first NS examples and tenant's information.

There is different type of service priority since OSS is different business configurations in advance, OSS can be according to upper The type of service priority that traffic type information determines the first NS examples is stated, for example, the type of service priority of the first NS examples For high isopreference level (H).

In addition, OSS can also be according to the above-mentioned tenant's information received, for example, tenant ID, checks in OSS whether store There is tenant's priority of the tenant.If it is not, OSS can obtain tenant's priority corresponding with the tenant ID from DB, For example, tenant's priority is high medium priority (M).

In this way, type of service priority and tenant priority of the OSS according to the first NS examples, resource is robbed shown in table 1 It accounts in strategy the preempting priority for determining the first NS examples and seizes permission, i.e., the preempting priority of the first NS examples is 3, and is robbed It is not allow to be preempted to account for permission.

302, OSS sends the first instantiation request of the first NS examples to NFVO, which includes robbing Account for mark.

In step 302, after OSS receives the requests to create of the first NS examples, the of the first NS examples is sent to NFVO One instantiation request, that is, it is the first NS example application resources to trigger NFVO, and executes instantiation operation and create the first NS examples.

At this point, the first instantiation request includes seizing mark, this is seized mark and is used to indicate whether the first NS examples are permitted Permitted to seize other occupied resources of NS examples.For example, when this is seized and is identified as " on ", that is, when allowing to create the first NS examples Other occupied resources of NS examples are seized, when this, which is seized, is identified as " off ", i.e., do not allow to seize when creating the first NS examples Other occupied resources of NS examples.

Subsequently illustrated for allowing the when of creating the first NS examples to seize other occupied resources of NS examples.

303, NFVO determines whether the resource created needed for the first NS examples is sufficient.

NFVO receive it is above-mentioned carry seize mark first instantiation request after, mark can be seized according to above-mentioned, It determines that when creating the first NS examples other occupied resources of NS examples can be seized.

In turn, NFVO can be interacted according to existing NS examples visioning procedure with VNFM, and the first NS examples institute is created to determine Whether the resource needed is sufficient.

If the resource created needed for the first NS examples is sufficient, NFVO can be executed according to existing NS examples visioning procedure NS instantiation operations are finally created that above-mentioned first NS examples.

If creating the inadequate resource needed for the first NS examples, following step 304-312 is executed.

If the inadequate resource needed for the first NS examples 304, is created, when the session of the first NS examples is retained preset by NFVO Between section.

In step 304, if the inadequate resource needed for the first NS examples is created, since NFVO seizes mark by above-mentioned Know and know that the when of creating the first NS examples can seize the resources of other NS examples, therefore, NFVO is without directly by this establishment the The meeting of one NS examples is released, but can the session of the first NS examples be retained preset time period.

For example, NFVO can start a timer, in this way, if creating the within the preset time period of timer setting Resource needed for one NS examples is sufficient, and NFVO can receive the instantiation request of the first NS examples of OSS transmissions again, then, NFVO can use the session of the first reserved NS examples directly to execute instantiation operation, real without obtaining the first NS again The session of example, so as to shorten the creation time of the first NS examples.

Certainly, if still can not be money of the first NS examples application to abundance within the preset time period of timer setting Source, then, the information such as the session of above-mentioned first NS examples can be discharged after timer expiry automatically.

305, NFVO sends response to OSS, and response is used to indicate the resource needed for the first NS examples of establishment not Foot.

Due to creating the inadequate resource needed for the first NS examples, after step 303, NFVO is answered to what OSS was sent It answers and carries that above-mentioned first instantiation is asked in response as a result, creating the inadequate resource needed for the first NS examples.It needs Bright, the embodiment of the present invention does not execute sequence between conditioning step 304 and step 305.

Furthermore it is also possible to which the mark that the session for carrying the first NS examples in above-mentioned response continues, such OSS are received After the mark continued to the session, it can know that NFVO does not discharge the session of the first NS examples.

Optionally, the resource size created needed for the first NS examples can also be carried in above-mentioned response.For example, wound It is 50G to build the total resources needed for the first NS examples, and currently available resource size is 40G；Alternatively, will can directly remove current Outside available resource size, the resource size that the first NS is also needed to is created, i.e. 10G is carried in above-mentioned response.

306, OSS is according to the preempting priority of the first NS examples, and lookup preempting priority is less than in resource preemptive policy The preempting priority of first NS examples, and it is that the target service type priority grade for allowing to be preempted and target tenant are excellent to seize permission First grade.

307, OSS will meet the NS examples of target service type priority grade and target tenant's priority, as at least one Target NS examples.

Due in step 301, OSS according to the traffic type information carried in the request to create of the first NS examples and Tenant's information determines the preempting priority of the first NS examples and seizes permission.So, in order to successfully create the first NS examples, It needs to further determine that the resource that the first NS examples are seized, subsequently to create the first NS examples using the resource seized.

Specifically, in step 306-307, OSS can seize plan according to the preempting priority of the first NS examples in resource The preempting priority less than the first NS examples is searched in slightly, and it is the target service type priority grade for allowing to be preempted to seize permission With target tenant's priority.In turn, the NS examples that can will meet target service type priority grade and target tenant's priority, as At least one target NS examples.

Illustratively, as shown in table 1, it is still illustrated for 3 with the preempting priority of the first NS examples.First, according to table 1 Shown in resource preemptive policy, OSS can determine that the preempting priority less than preempting priority 3 is：4,5 and 6.Also, work as Preempting priority is：4,5 or 6 when, it is to allow to be preempted to seize permission.

That is, tenant's priority is M, and the arbitrary NS examples that type of service priority is M (do not include the first NS real Example) it can be used as target NS examples；Tenant's priority is M, and the arbitrary NS examples that type of service priority is L can be made For target NS examples；Tenant's priority is L, and the arbitrary NS examples that type of service priority is L can be used as target NS real Example.

Since record has the type of service priority and tenant's priority of each NS example of establishment in OSS, OSS can determine above-mentioned target NS examples according to the type of service priority and tenant's priority of each NS example of record.

308, OSS determines the 2nd NS examples from above-mentioned at least one target NS examples.

First, if resource preemptive policy includes preemptive condition, OSS further determines that above-mentioned at least one target NS Whether each target NS examples in example meet corresponding preemptive condition.

For example, as shown in table 1, tenant's priority of target NS examples 1 is M, and type of service priority is M, then, target The preemptive condition of NS examples 1 is：When the memory of target NS examples 1 is more than 1G, allow the resource for seizing target NS examples 1.This When, OSS can further inquire the memory size of target NS examples 1, can be by it if the memory of target NS examples 1 is more than 1G It, cannot be as the 2nd NS examples if the memory of target NS examples 1 is less than or equal to 1G as the 2nd NS examples.

Further, due to meet the target NS examples of preemptive condition may have it is multiple, at this point, OSS can be according to these The preempting priority of target NS examples, using the minimum target NS examples of preempting priority as above-mentioned 2nd NS examples.Certainly, OSS can also randomly choose the above-mentioned 2nd NS examples of a conduct in these targets NS examples, the embodiment of the present invention to this not It imposes any restrictions.

In addition, if carrying the resource size created needed for the first NS examples in the response obtained in step 305. So, OSS can also further obtain the resource size of these targets NS examples, and then calculating each target NS examples can be with The size of the resource of release finally according to the size for the resource that each target NS examples can discharge, will meet establishment One or more target NS examples of resource size needed for one NS examples are as the 2nd NS examples.In this way, OSS can directly be First NS examples are determined to meet the 2nd NS examples of its resource requirement, and accurately calculate the 2nd NS examples and subsequently hold The resource size that row capacity reducing discharges when operating.

309, OSS sends the capacity reducing request of the 2nd NS examples to NFVO, and it is real that capacity reducing request is used to indicate NFVO couples of the 2nd NS The resource that example occupies executes capacity reducing operation.

At this point, if the 2nd NS examples that OSS is determined have it is multiple, OSS can be directed to each the 2nd NS example, to NFVO sends capacity reducing request.

310, the resource that NFVO pairs of the 2nd NS example occupies executes capacity reducing operation.

After OSS determines the 2nd NS examples being preempted, the capacity reducing request of the 2nd NS examples is sent to NFVO, with instruction Receive the resource execution capacity reducing operation that NFVO pairs of the 2nd NS example of capacity reducing request occupies.

In one possible implementation, since NS examples are all by network service descriptor (network Service descriptor, NSD) file created, pass through deploy flavour (deployment specification) ID in NSD files The specification of the resource capacity of NS examples is described, for example, the maximum specification of the occupancy resource of NS examples 1 is 100G, minimum gauge For 50G.And the Deploy Flavour ID of all NS examples created are recorded in OSS, therefore, OSS can be by searching for The Deploy Flavour ID of 2nd NS examples, determine the minimum gauge of the resource capacity of the 2nd NS examples.

So, the resource that the 2nd NS examples can be carried in the capacity reducing request for the 2nd NS examples that OSS is sent to NFVO is held The minimum gauge of amount.In this way, NFVO can be operated by capacity reducing by the minimum gauge of the 2nd NS examples capacity reducing to its resource capacity. It can ensure the normal operation of the 2nd NS examples in this way.

In alternatively possible realization method, if in step 308, OSS has calculated the 2nd NS examples and has held The resource size that row capacity reducing discharges when operating, then, which can be carried into the request of above-mentioned capacity reducing and be sent to by OSS NFVO operates release resource identical with above-mentioned resource size by NFVO by capacity reducing.

Further, resource change mark, resource change can also be carried in the capacity reducing request of above-mentioned 2nd NS examples Mark is used to indicate is to the reason of the 2nd NS examples execution capacity reducing operation：The resource of 2nd NS examples is preempted.

In this way, under the NFVO for receiving capacity reducing request can preserve the resource information that current 2nd NS examples occupy Come, for example, current 2nd NS examples occupy the resource of 80G.So, after the completion of follow-up first NS examples create, NFVO may be used also To restore the resource that the 2nd NS examples are preempted according to above-mentioned resource information.

311, OSS sends the second instantiation request of the first NS examples to NFVO, is created needed for the first NS examples with determining Resource it is whether sufficient.

After the resource that NFVO pairs of the 2nd NS example occupies executes capacity reducing operation, the message that capacity reducing operation is completed is sent to OSS, After capacity reducing operation being executed due to the resource that NFVO pairs of the 2nd NS example occupies, a part of resource occupied originally by the 2nd NS examples Therefore release after OSS receives the message that above-mentioned capacity reducing operation is completed, can continue to attempt to send the first NS examples to NFVO The second instantiation request, determine whether the resource created at this time needed for the first NS example sufficient by NFVO, and will determine As a result OSS is fed back to.

If the resource created needed for the first NS examples at this time is still insufficient, repeats and execute above-mentioned steps 304-310, until Until creating the resource abundance needed for the first NS examples.

If the resource created at this time needed for the first NS examples is sufficient, following step 312 is executed.

If the resource 312, created needed for the first NS examples is sufficient, NFVO executes the instantiation operation of the first NS examples, To create the first NS examples.

301-312 can be seen that in the higher first NS examples of instantiation preempting priority through the above steps, if It, can be by the lower 2nd NS examples of capacity reducing preempting priority, to discharge second when creating the inadequate resource of the first NS examples A part of resource that NS examples occupy creates the first NS examples thereby using the resource of this part release, can not only improve Resource utilization can also ensure the resource requirement of high-priority network business as far as possible.

Further, after successfully creating the first NS examples, in order to not interfere be preempted resource to greatest extent The normal operation of two NS examples.As shown in figure 4, also the money that the 2nd NS examples are preempted can be restored by following step 401-402 Source.

401, OSS sends the dilatation request of the 2nd NS examples to NFVO.

402, the resource information that NFVO is occupied according to the 2nd NS examples of record executes the dilatation operation of the 2nd NS examples.

403, NFVO sends the message that dilatation operation is completed to OSS.

In step 401, there are two types of the scenes that OSS is asked to the dilatation of NFVO the 2nd NS examples of transmission.

One is, if without storing each real-time occupation condition of NS examples in OSS, OSS can not be determined Available resource size in current NFV systems, therefore, the dilatation that OSS can periodically send the 2nd NS examples to NFVO are asked It asks, determines whether available resource restores the resource that the 2nd NS examples are preempted, the dilatation enough in current NFV systems by NFVO The mark of the 2nd NS examples is carried in request.

Another kind is, if being stored with each real-time occupation condition of NS examples in OSS, OSS can basis Each real-time occupation condition of NS examples, determines in current NFV systems whether available resource size is greater than or equal to the The two occupied resource sizes of NS examples, then, if available resource size is greater than or equal to the 2nd NS realities in current NFV systems The occupied resource size of example then can trigger the dilatation request that OSS sends the 2nd NS examples to NFVO, also be taken in dilatation request Mark with the 2nd NS examples.

Certainly, above-mentioned resource change mark, the embodiment of the present invention can also be carried in the dilatation of the 2nd NS examples request This is not restricted.

Due in the step 310, resource information that NFVO will occupy the 2nd NS examples before executing capacity reducing operation It saves, therefore, in step 402, after NFVO receives the dilatation request of the 2nd NS examples, if in current NFV systems Available resource size is greater than or equal to the 2nd occupied resource size of NS examples, then NFVO can be according to the 2nd NS examples The resource information that identifier lookup is occupied to the 2nd NS examples preserved, then, the resource that NFVO is occupied according to the 2nd NS examples Information, execute the 2nd NS examples dilatation operation, by the 2nd NS examples occupy resource capacity expansion to the 2nd non-capacity reducing of NS examples it Preceding capacity specifications.

After NFVO completes the dilatation operation of the 2nd NS examples, in step 403, sends dilatation operation to OSS and complete Message.

It is above-mentioned that mainly scheme provided in an embodiment of the present invention is described from the angle of interaction between each network element.It can With understanding, in order to realize above-mentioned function, it comprises execute each corresponding hardware configuration of function by above-mentioned OSS, NFVO etc. And/or software module.Those skilled in the art should be readily appreciated that, described in conjunction with the examples disclosed in this document each Exemplary unit and algorithm steps, the embodiment of the present invention can be come real with the combining form of hardware or hardware and computer software It is existing.Some functions is executed in a manner of hardware or computer software driving hardware actually, depends on the specific of technical solution Using and design constraint.Professional technician can be described to be realized using distinct methods to each specific application Function, but it is this realize it is not considered that beyond the embodiment of the present invention range.

The embodiment of the present invention can carry out OSS, NFVO etc. according to the above method example division of function module, for example, Each function can be corresponded to and divide each function module, two or more functions can also be integrated in a processing mould In block.The form that hardware had both may be used in above-mentioned integrated module is realized, can also be realized in the form of software function module. It should be noted that be schematical, only a kind of division of logic function to the division of module in the embodiment of the present invention, it is practical There may be another division manner when realization.

In the case where dividing each function module using corresponding each function, Fig. 5 shows involved in above-described embodiment And OSS a kind of possible structural schematic diagram, which includes：Acquiring unit 51, determination unit 52 and transmission unit 53.

Acquiring unit 51 is for supporting OSS to execute the process 501-503 in process 301 and Fig. 5 in Fig. 3；It determines single Member 52 is for supporting NFVO to execute the process 306-308 in Fig. 3；Transmission unit 53 is for supporting NFVO to execute the process in Fig. 3 302, the process 401 in 309,311 and Fig. 4.Wherein, all related contents for each step that above method embodiment is related to The function description of corresponding function module can be quoted, details are not described herein.

In the case where dividing each function module using corresponding each function, Fig. 6 shows involved in above-described embodiment And NFVO a kind of possible structural schematic diagram, which includes：Acquiring unit 61, capacity reducing unit 62, instantiating unit 63, Dilatation unit 64, determination unit 65, execution unit 66 and recording unit 67.

Capacity reducing unit 62 is for supporting NFVO to execute the process 310 in Fig. 3；Instantiating unit 63 is for supporting NFVO to execute Process 312 in Fig. 3；Dilatation unit 64 is for supporting NFVO to execute the process 402 in Fig. 4；Determination unit 65 is for supporting NFVO executes the process 303 in Fig. 3；Execution unit 66 is for supporting NFVO to execute the process 304 in Fig. 3；Acquiring unit 61 is used In supporting NFVO to receive the capacity reducing request for the 2nd NS examples that OSS is sent, the preempting priority of the 2nd NS examples is less than the first NS The preempting priority of example；If the resource created needed for the first NS examples is sufficient, the reality of the first NS examples of OSS transmissions is received Exampleization is asked；It receives the first NS examples that OSS is sent and seizes mark, this, which is seized mark and is used to indicate the first NS examples, allows to rob Account for other occupied resources of NS examples；Receive the dilatation request for the 2nd NS examples that OSS is sent；Recording unit 67 is for supporting NFVO records the resource information that the 2nd NS examples occupy.Wherein, all phases for each step that above method embodiment is related to are inside the Pass The function description of corresponding function module can be quoted by holding, and details are not described herein.

Using integrated unit, Fig. 7 shows the one of OSS (or NFVO) involved in above-described embodiment The possible structural schematic diagram of kind.OSS (or NFVO) includes：Processing module 72 and communication module 73.Processing module 72 is used for OSS The action of (or NFVO) carries out control management, for example, processing module 72 is used to support the process that OSS (or NFVO) is executed in Fig. 3 Process 401-403 in 301-312 and Fig. 4, and/or other processes for techniques described herein.Communication module 73 Communication for supporting OSS (or NFVO) and other network entities.OSS (or NFVO) can also include memory module 71, be used for Store the program code and data of OSS (or NFVO).

Wherein, processing module 72 can be processor or controller, such as can be central processing unit (Central Processing Unit, CPU), general processor, digital signal processor (Digital Signal Processor, DSP), Application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), field programmable gate array It is (Field Programmable Gate Array, FPGA) or other programmable logic device, transistor logic, hard Part component or its arbitrary combination.It may be implemented or execute the various examples in conjunction with described in disclosure of the embodiment of the present invention The logic block of property, module and circuit.The processor can also be to realize the combination of computing function, such as include one or more The combination etc. of a micro processor combination, DSP and microprocessor.Communication module 73 can be transceiver, transmission circuit or communication Interface etc..Memory module 61 can be memory.

When processing module 72 is processor, communication module 73 is transceiver, and when memory module 71 is memory, the present invention is real It can be OSS shown in Fig. 8 (or NFVO) to apply the OSS (or NFVO) involved by example.

As shown in fig.8, the OSS (or NFVO) includes：Processor 82, transceiver 81, memory 83 and bus 84.Its In, transceiver 81, processor 82 and memory 83 are connected with each other by bus 84；Bus 84 can be Peripheral Component Interconnect mark Accurate (Peripheral Component Interconnect, PCI) bus or expanding the industrial standard structure (Extended Industry Standard Architecture, EISA) bus etc..The bus can be divided into address bus, data/address bus, Controlling bus etc..For ease of indicating, only indicated with a thick line in Fig. 8, it is not intended that an only bus or a type Bus.

Further, the embodiment of the present invention also provides a kind of computer program, which includes instruction, when the meter When calculation machine program is computer-executed, computer can be allow to execute above-mentioned steps 301-312 or step 401-403 In relevant NS instantiation method.

Further, the embodiment of the present invention also provides a kind of computer readable storage medium, the computer-readable storage medium Instruction is stored in matter, when run on a computer so that computer executes the instantiations of the NS in above-mentioned any embodiment Method.

In the above-described embodiments, all or part of can be come in fact by software, hardware, firmware or its arbitrary combination It is existing.When being realized using software program, can entirely or partly occur in the form of a computer program product.The computer Program product includes one or more computer instructions.When loading on computers and executing the computer program instructions, entirely Portion is partly generated according to the flow or function described in the embodiment of the present invention.The computer can be all-purpose computer, specially With computer, computer network or other programmable devices.The computer instruction can be stored in computer-readable storage In medium, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the meter Calculation machine instruction can from a web-site, computer, server or data center by it is wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, service Device or data center's transmission.The computer readable storage medium can be any usable medium that computer can access or It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be Magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state disk Solid State Disk (SSD)) etc..

The above, the only specific implementation mode of the application, but the protection domain of the application is not limited thereto, it is any Change or replacement in the technical scope that the application discloses, should all cover within the protection domain of the application.Therefore, this Shen Protection domain please should be based on the protection scope of the described claims.

Claims (25)

1. a kind of method of network service NS instantiations, which is characterized in that including：

Operation Support System OSS receives the request to create of the first NS examples to be created, and the request to create is used to indicate described The preempting priority of first NS examples；

When creating the inadequate resource needed for the first NS examples, the OSS is according to the preemptive priorities of the first NS examples Grade determines that the 2nd NS examples for allowing to be preempted resource, the preempting priority of the 2nd NS examples are less than the first NS examples Preempting priority；

The OSS sends the capacity reducing request of the 2nd NS examples, the capacity reducing to network function virtualization scheduling node NFVO Request is used to indicate the NFVO and executes capacity reducing operation to the resource that the 2nd NS examples occupy, to use the 2nd NS real First NS examples described in the asset creation discharged after example capacity reducing.

2. according to the method described in claim 1, it is characterized in that, virtualizing scheduling node to network function in the OSS After NFVO sends the capacity reducing request of the 2nd NS examples, further include：

The OSS receives the message that the capacity reducing operation for the 2nd NS examples that the NFVO is sent is completed；

The OSS sends the instantiation request of the first NS examples to the NFVO, and the instantiation request is used to indicate institute It states NFVO and executes instantiation operation, to create the first NS examples.

3. method according to claim 1 or 2, which is characterized in that the request to create includes the first NS examples Traffic type information and tenant's information；Resource preemptive policy is stored in the OSS, the resource preemptive policy includes described Correspondence between the type of service priority of one NS examples, tenant's priority and preempting priority；

Wherein, after the request to create that the first NS examples to be created are received in OSS, further include：

The OSS is determined according to the traffic type information, tenant's information and the resource preemptive policy of the first NS examples The type of service priority and tenant's priority of the first NS examples；

The OSS according to the type of service priority, tenant's priority and the resource preemptive policy of the first NS examples, Determine that preempting priority corresponding with the type of service priority of the first NS examples and tenant's priority is the first NS The preempting priority of example.

4. according to the method described in claim 3, it is characterized in that, the resource preemptive policy further includes preempting priority and rob Account for the correspondence between permission；

Wherein, the OSS determines the 2nd NS examples for allowing to be preempted resource according to the preempting priority of the first NS examples, Including：

The OSS searches the preempting priority that preempting priority is less than the first NS examples in the resource preemptive policy, And it is the target service type priority grade for allowing to be preempted and target tenant's priority to seize permission；

The OSS will meet a NS example of the target service type priority grade and the target tenant priority, as The 2nd NS examples.

5. described according to the method described in claim 4, it is characterized in that, the resource preemptive policy further includes preemptive condition Preemptive condition is used to indicate the NS examples for allowing to be preempted and needs the performance indicator met；

Wherein, the OSS will meet a NS example of the target service type priority grade and the target tenant priority, As the 2nd NS examples, including：

The OSS makees at least one NS examples for meeting the target service type priority grade and the target tenant priority For target NS examples；

The OSS determines whether each target NS examples meet the preemptive condition；

The OSS determines a conduct the 2nd NS examples from the target NS examples for meet the preemptive condition.

6. method according to any one of claims 1-5, which is characterized in that in the capacity reducing request of the 2nd NS examples It changes and identifies including resource, the resource change mark is used to indicate the reason of executing capacity reducing operation to the 2nd NS examples For：The resource of the 2nd NS examples is preempted.

7. according to the method described in any one of claim 1-6, which is characterized in that send described the to NFVO in the OSS After the capacity reducing request of two NS examples, further include：

The OSS sends the dilatation request of the 2nd NS examples to the NFVO, and the dilatation request is used to indicate described NFVO restores the resource that the 2nd NS examples are preempted.

8. a kind of method of network service NS instantiations, which is characterized in that including：

When creating the inadequate resource needed for the first NS examples, network function virtualizes scheduling node NFVO and receives operation support system The capacity reducing request for the 2nd NS examples that system OSS is sent, the preempting priority of the 2nd NS examples are less than the first NS examples Preempting priority；

The NFVO executes capacity reducing operation to the resource that the 2nd NS examples occupy, after using the 2nd NS example capacity reducings First NS examples described in the asset creation of release.

9. according to the method described in claim 8, it is characterized in that, the resource occupied to the 2nd NS examples in the NFVO After executing capacity reducing operation, further include：

The NFVO receives the instantiation request for the first NS examples that the OSS is sent；

The NFVO executes instantiation operation, to create the first NS examples.

10. according to the method described in claim 9, it is characterized in that, receiving the capacity reducing for the 2nd NS examples that OSS is sent in NFVO Before request, further include：

What the NFVO received the first NS examples that the OSS is sent seizes mark, and the mark of seizing is used to indicate institute Stating the first NS examples allows to seize other occupied resources of NS examples；

The NFVO determines the inadequate resource created needed for the first NS examples；

The session of the first NS examples is retained preset time period by the NFVO.

11. according to the method described in claim 10, it is characterized in that, the NFVO executes instantiation operation, described in establishment First NS examples, including：

The NFVO executes instantiation operation according to the session of the first NS examples of reservation, real to create the first NS Example.

12. according to the method described in any one of claim 8-11, which is characterized in that the capacity reducing of the 2nd NS examples is asked Include resource change mark, the resource change mark is used to indicate the reason of executing capacity reducing operation to the 2nd NS examples For：The resource of the 2nd NS examples is preempted；

Wherein, before the resource that the NFVO occupies the 2nd NS examples executes capacity reducing operation, further include：

The NFVO records the resource information that the 2nd NS examples occupy；

Wherein, execute instantiation operation in the NFVO further includes after creating the first NS examples：

The NFVO receives the dilatation request for the 2nd NS examples that the OSS is sent；

The resource information that the NFVO is occupied according to the 2nd NS examples of record restores what the 2nd NS examples were preempted Resource.

13. a kind of Operation Support System OSS, which is characterized in that including：

Acquiring unit, the request to create for receiving the first NS examples to be created, the request to create are used to indicate described The preempting priority of one NS examples；

Determination unit is used for when creating the inadequate resource needed for the first NS examples, according to robbing for the first NS examples It accounts for priority and determines that the 2nd NS examples for allowing to be preempted resource, the preempting priority of the 2nd NS examples are less than described first The preempting priority of NS examples；

Transmission unit, the capacity reducing request for sending the 2nd NS examples to network function virtualization scheduling node NFVO, institute It states capacity reducing request and is used to indicate the resource that the NFVO occupies the 2nd NS examples and executes capacity reducing and operate, to use described the First NS examples described in the asset creation discharged after two NS example capacity reducings.

14. OSS according to claim 13, which is characterized in that

The acquiring unit is additionally operable to receive the message that the capacity reducing operation for the 2nd NS examples that the NFVO is sent is completed；

The transmission unit is additionally operable to send the instantiation request of the first NS examples to the NFVO, and the instantiation is asked It asks and is used to indicate the NFVO execution instantiation operation, to create the first NS examples.

15. the OSS according to claim 13 or 14, which is characterized in that the request to create includes the first NS examples Traffic type information and tenant's information；Resource preemptive policy is stored in the OSS, the resource preemptive policy includes first Correspondence between the type of service priority of NS examples, tenant's priority and preempting priority；

The determination unit is additionally operable to traffic type information, tenant's information and the resource according to the first NS examples Preemptive policy determines the type of service priority and tenant's priority of the first NS examples；According to the business of the first NS examples Type priority grade, tenant's priority and the resource preemptive policy, determination are preferential with the type of service of the first NS examples Grade preempting priority corresponding with tenant's priority is the preempting priority of the first NS examples.

16. OSS according to claim 15, which is characterized in that the resource preemptive policy further include preempting priority with Seize the correspondence between permission；

The determination unit, is specifically used for：It is real less than the first NS that preempting priority is searched in the resource preemptive policy The preempting priority of example, and it is the target service type priority grade for allowing to be preempted and target tenant's priority to seize permission；It will A NS example for meeting the target service type priority grade and the target tenant priority, as the 2nd NS realities Example.

17. OSS according to claim 16, which is characterized in that the resource preemptive policy further includes preemptive condition, described Preemptive condition is used to indicate the NS examples for allowing to be preempted and needs the performance indicator met；

The determination unit, is specifically used for：The target service type priority grade and the target tenant priority will be met At least one NS examples are as target NS examples；Determine whether each target NS examples meet the preemptive condition；From meeting It states and determines a conduct the 2nd NS examples in the target NS examples of preemptive condition.

18. according to the OSS described in any one of claim 13-17, which is characterized in that

The transmission unit is additionally operable to send the dilatation request of the 2nd NS examples to the NFVO, and the dilatation request is used Restore the resource that the 2nd NS examples are preempted in the instruction NFVO.

19. a kind of network function virtualization scheduling node NFVO, which is characterized in that including：

Acquiring unit, for when creating the inadequate resource needed for the first NS examples, receiving that Operation Support System OSS sends The capacity reducing of two NS examples is asked, and the preempting priority of the 2nd NS examples is less than the preempting priority of the first NS examples；

Capacity reducing unit, the resource for being occupied to the 2nd NS examples executes capacity reducing operation, to use the 2nd NS examples First NS examples described in the asset creation discharged after capacity reducing.

20. NFVO according to claim 19, which is characterized in that the NFVO further includes instantiating unit, the acquisition Unit is additionally operable to receive the instantiation request for the first NS examples that the OSS is sent；

The instantiating unit, for executing instantiation operation, to create the first NS examples.

21. NFVO according to claim 20, which is characterized in that the NFVO further includes determination unit and execution unit,

The acquiring unit is additionally operable to receive the mark of seizing of the first NS examples of the OSS transmissions, described to seize mark Being used to indicate the first NS examples allows to seize other occupied resources of NS examples；

The determination unit, for determining the inadequate resource created needed for the first NS examples；

The execution unit, for the session of the first NS examples to be retained preset time period.

22. NFVO according to claim 21, which is characterized in that

The instantiating unit is specifically used for executing instantiation operation according to the session of the first NS examples of reservation, with wound Build the first NS examples.

23. according to the NFVO described in any one of claim 19-22, which is characterized in that the capacity reducing of the 2nd NS examples is asked It includes resource change mark to ask, and the resource change mark is used to indicate the original that capacity reducing operation is executed to the 2nd NS examples Because：The resource of the 2nd NS examples is preempted；The NFVO further includes recording unit and dilatation unit,

The recording unit, the resource information occupied for recording the 2nd NS examples；

The acquiring unit is additionally operable to receive the dilatation request for the 2nd NS examples that the OSS is sent；

It is real to restore the 2nd NS for the dilatation unit, the resource information for being occupied according to the 2nd NS examples of record The resource that example is preempted.

24. a kind of computer readable storage medium, instruction is stored in the computer readable storage medium, which is characterized in that When described instruction is run on the Operation Support System OSS as described in any one of claim 13-18 so that the OSS The method for executing the network service NS instantiations.

25. a kind of computer readable storage medium, instruction is stored in the computer readable storage medium, which is characterized in that When described instruction is run on the network function virtualization scheduling node NFVO as described in any one of claim 19-23, So that the method that the NFVO executes the network service NS instantiations.