Summary of the invention
The disclosure technical problem to be solved is to provide a kind of network slice selection method and system, enables to endSuitable LTE network slice is selected when end is from NR network switching to LTE network for terminal.
On the one hand according to the disclosure, a kind of network slice selection method is proposed, comprising: access multiple new nothings in response to terminalLine access technology NR network slice, accessing with mobile management function to ps domain AMF is that the currently used NR network slice setting of terminal is excellentFirst grade；Service mobility management entity MME receives switching request of the terminal from NR network to LTE network, is used based on terminalNR network slice priority judgement be currently accessed LTE network slice whether be terminal optimal network slice；If currently connecingThe LTE network slice entered is not the optimal network slice of terminal, and service MME is then sliced corresponding target to the optimal network of terminalMME initiates redirection request to complete to switch, otherwise, it determines switching is completed.
Further, which is sliced selection method, further includes: AMF is according to the predetermined plan of terminal unit contractual parameter and operatorAt least one NR network slice setting priority currently used for terminal slightly in the two.
Further, which is sliced selection method, further includes: service MME is sliced based on the NR network that terminal usesWhether priority is eventually according to the LTE network slice that the corresponding relationship judgement of NR network slice and LTE network slice is currently accessedThe optimal network at end is sliced.
Further, which is sliced selection method, further includes: service MME is sliced according to NR network slice with LTE networkCorresponding relationship determine the optimal network slice of terminal, and be sliced corresponding target MME to optimal network and initiate redirection request.
Further, service MME makes according to the interface of service MME and AMF or according to the switching request of terminal acquisition terminalThe priority of NR network slice；It wherein, include the precedence information for the NR network slice that terminal uses in switching request.
According to another aspect of the present disclosure, it is also proposed that a kind of network slice selection system, comprising: access and mobile managementFunction AMF is the currently used NR network of terminal for being sliced in response to the multiple new wireless access technology NR networks of terminal accessSlice setting priority；Service mobility management entity MME, for receiving switching request of the terminal from NR network to LTE network,The LTE network slice that the priority judgement of the NR network slice used based on terminal is currently accessed whether be terminal optimal networkSlice is sliced to the optimal network of terminal and corresponds to if the LTE network slice being currently accessed is not the optimal network slice of terminalTarget MME initiate redirection request to complete to switch, otherwise, it determines switching complete.
Further, AMF works as according at least one in both terminal unit contractual parameter and operator's predetermined policy for terminalThe preceding NR network slice setting priority used.
Further, the priority for the NR network slice that service MME is used to use based on terminal, according to NR network slice withLTE network slice corresponding relationship judgement be currently accessed LTE network slice whether be terminal optimal network slice.
Further, service MME is used to determine terminal most according to NR network slice and the corresponding relationship of LTE network sliceExcellent network slice, and be sliced corresponding target MME to optimal network and initiate redirection request.
Further, service MME is used to obtain eventually according to the interface of service MME and AMF or according to the switching request of terminalHold the priority of the NR network slice used；It wherein, include the priority letter for the NR network slice that terminal uses in switching requestBreath.
According to another aspect of the present disclosure, it is also proposed that a kind of network slice selection system, comprising: memory；And couplingTo the processor of memory, processor is configured as the network slice selection for example above-mentioned based on the instruction execution for being stored in memoryMethod.
According to another aspect of the present disclosure, it is also proposed that a kind of computer readable storage medium is stored thereon with computer journeyThe step of sequence instruction, which realizes above-mentioned network slice selection method when being executed by processor.
When the disclosure enables to terminal from NR network switching to LTE network, priority is sliced according to the NR network of userTo select suitable LTE network slice for terminal, the user experience is improved, and reduces NR network and LTE network interoperability pairThe influence of terminal traffic.
By the detailed description referring to the drawings to the exemplary embodiment of the disclosure, the other feature of the disclosure and itsAdvantage will become apparent.
Specific embodiment
The various exemplary embodiments of the disclosure are described in detail now with reference to attached drawing.It should also be noted that unless in addition havingBody explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originallyScope of disclosure.
Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to realityProportionate relationship draw.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the disclosureAnd its application or any restrictions used.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitableIn the case of, the technology, method and apparatus should be considered as authorizing part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, withoutIt is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang YiIt is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and referenceThe disclosure is further described in attached drawing.
Fig. 1 is the flow diagram of one embodiment that disclosure network is sliced selection method.This method includes following stepIt is rapid:
In step 110, multiple NR networks are accessed in response to terminal and are sliced, AMF (Access and MobilityManagement Function, access and mobile management function to ps domain) it is that the currently used NR network slice setting of terminal is preferentialGrade.I.e. user accesses multiple 5G network slices simultaneously, and the AMF of network side is that the currently used 5G network slice setting of the user is excellentFirst grade, and be stored in the contextual information of user of the AMF.
Wherein, due to user's movement or current 5G wireless signal strength reduction etc., user can be initiated from 5G networkTo the switching of 4G network.
In step 120, services MME (Mobility Management Entity, mobility management entity) and receive terminalFrom NR network to the switching request of LTE network.
In step 130, services the priority that MME is sliced based on the NR network that terminal uses and judge the LTE net being currently accessedWhether network slice is the optimal network slice of terminal, if so, thening follow the steps 140, otherwise, executes step 150.User accesses 4GAfter network, the MME of current service is sliced priority according to the 5G network of the user received from AMF, and configured in MME in advanceThe corresponding relationship of 5G network slice and 4G network slice judges whether the slice being currently accessed is the optimal network slice of user.
In step 140, services MME and determine that switching is completed.
In step 150, MME is serviced to the optimal network of terminal and is sliced corresponding target MME initiation redirection request with completeAt switching.Wherein, service MME can be sliced the optimal network that terminal is determined with the corresponding relationship of 4G network slice according to 5G networkSlice, and be sliced corresponding target MME to optimal network and initiate redirection request.
In this embodiment, it accesses multiple NR networks in response to terminal to be sliced, AMF is that the currently used NR network of terminal is cutPriority is arranged in piece；It services MME and receives switching request of the terminal from NR network to LTE network, the NR network used based on terminalSlice priority judgement be currently accessed LTE network slice whether be terminal optimal network slice；If the LTE being currently accessedNetwork slice is not the optimal network slice of terminal, and service MME is then sliced corresponding target MME to the optimal network of terminal and initiatesRedirection request is to complete to switch, otherwise, it determines switching is completed, which enables to terminal from NR network switching to LTEPriority is sliced to be sliced for the suitable corresponding LTE network of terminal selection according to the NR network of user when network, improves useFamily experience, and reduce the influence of NR network and LTE network interoperability to customer service.
Fig. 2 is the flow diagram for another embodiment that disclosure network is sliced selection method.Wherein, number of users is mergedTerminal is preserved in the signing information of NR network and LTE network according to library.
In step 210, terminal accesses NR network, and simultaneously using NR network slice -1 and NR network slice -2.
In step 220, AMF is that the currently used NR network of terminal is cut according to user's signing parameter, operator's predetermined policyPriority is arranged in piece, for example, the highest priority of NR network slice -2 can be set.It wherein, can according to operator's predetermined policyTo determine that the NR network that terminal can be used is sliced, in addition, AMF is also conceivable to terminal when NR network is arranged and is sliced priorityThe service conditions used.
In step 230, the mobile network coverage area NR of terminal is initiated to the switching request of LTE network.Wherein, terminal defaultAccess LTE network slice -1.
Priority, NR network slice and LTE network are sliced according to the NR network of terminal in the MME of step 240, current serviceThe corresponding relationship and corresponding strategies of slice determine and should be terminal selection access LTE network slice -2.Wherein, service MME can lead toThe priority of the interface between MME and AMF or the switching request message indirect gain terminal NR network slice via terminal is crossed,In, it include the precedence information for the NR network slice that terminal uses in switching request.Furthermore it is possible to which NR is configured in MME in advanceThe corresponding relationship of network slice and LTE network slice, in this embodiment, such as the corresponding NR network of configuration LTE network slice -1Slice -1, the corresponding NR network slice -2 of LTE network slice -2.
In step 250, MME is serviced according to NR network slice and determines the optimal of terminal with the corresponding relationship that LTE network is slicedNetwork is sliced corresponding target MME, and initiates redirection request to target MME, for example, target MME is LTE net in the embodimentService MME in network slice -2.
In step 260, terminal completes MME gravity treatment, and completes the switching of NR network to LTE network, is linked into LTE network and cutsIn piece -2.
In this embodiment, terminal accesses multiple NR network slices simultaneously；Network side is that the terminal currently uses simultaneouslySlice setting priority；Terminal initiates the switching of NR network to LTE network；MME judges whether current slice is that the terminal is optimalNetwork slice；If so, then switching completion；If not, initiating the redirection being sliced to optimal network, and complete to switch, thusWhen terminal is from NR network switching to LTE network, suitable LTE network slice is selected for terminal.
Fig. 3 is the structural schematic diagram of one embodiment that disclosure network is sliced selection system.The system includes AMF 310With MME 320, in which:
AMF 310 is used to access multiple NR networks in response to terminal and be sliced, and sets for the currently used NR network slice of terminalSet priority.I.e. user accesses multiple 5G network slices simultaneously, and the AMF of network side is the currently used 5G network slice of the userPriority is set, and is stored in the contextual information of user of the AMF.Wherein, AMF 310 is according to terminal unit contractual parameter and fortuneSeek the NR network slice setting priority currently used for terminal of at least one in quotient's predetermined policy the two.
The MME 320 of current service is used for receiving switching request of the terminal from NR network to LTE network based on terminalNR network slice priority judgement be currently accessed LTE network slice whether be terminal optimal network slice, if currentlyThe LTE network slice of access is not the optimal network slice of terminal, then is sliced corresponding target MME hair to the optimal network of terminalRedirection request is played to complete to switch, otherwise, it determines switching is completed.
Wherein, the MME 320 of current service can be according to the interface of service MME and AMF or according to the switching request of terminalObtain the priority for the NR network slice that terminal uses, wherein include the excellent of the NR network slice that terminal uses in switching requestFirst grade information.Service MME 320 is also based on the priority for the NR network slice that terminal uses, according to NR network slice withLTE network slice corresponding relationship judgement be currently accessed LTE network slice whether be terminal optimal network slice, if notIt is then to determine that the optimal network of terminal is sliced according to the corresponding relationship of NR network slice and LTE network slice, and to optimal networkIt is sliced corresponding target MME and initiates redirection request.
The embodiment enable to LTE network according to the NR network of user be sliced priority come for terminal selection it is suitable rightThe LTE network slice answered, the user experience is improved, and reduces the influence of NR network and LTE network interoperability to business.
Fig. 4 is the structural schematic diagram for another embodiment that disclosure network is sliced selection system.Wherein, in the systemEach unit entity can include memory 410 and processor 420.Wherein: memory 410 can be disk, flash memory or otherAny non-volatile memory medium.Memory is used to store Fig. 1, the instruction in embodiment corresponding to 2.Processor 420 is coupled toMemory 410 can be used as one or more integrated circuits to implement, such as microprocessor or microcontroller.The processor 420For executing the instruction stored in memory.
It in one embodiment, can be as shown in figure 5, each unit entity in the system 500 can include storageDevice 510 and processor 520.Processor 520 is coupled to memory 510 by BUS bus 530.The system 500 can also be by depositingStorage interface 540 is connected to external memory 550 to call external data, can also be connected to net by network interface 560Network or an other computer system (not shown), no longer describe in detail herein.
In this embodiment, it is instructed by memory stores data, then above-metioned instruction is handled by processor, can promotedUser experience, and reduce the influence of NR network and LTE network interoperability to business.
In another embodiment, a kind of computer readable storage medium, is stored thereon with computer program instructions, this refers toEnable and realize Fig. 1 when being executed by processor, method in embodiment corresponding to 2 the step of.It should be understood by those skilled in the art that,Embodiment of the disclosure can provide as method, apparatus or computer program product.Therefore, complete hardware reality can be used in the disclosureApply the form of example, complete software embodiment or embodiment combining software and hardware aspects.Moreover, the disclosure can be used oneIt is a or it is multiple wherein include computer usable program code computer can with non-transient storage medium (including but not limited toMagnetic disk storage, CD-ROM, optical memory etc.) on the form of computer program product implemented.
The disclosure is reference according to the method for the embodiment of the present disclosure, the flow chart of equipment (system) and computer program productAnd/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructionsAnd/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer toEnable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generateOne machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizingThe device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spyDetermine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram orThe function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that countingSeries of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer orThe instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram oneThe step of function of being specified in a box or multiple boxes.
So far, the disclosure is described in detail.In order to avoid covering the design of the disclosure, it is public that this field institute is not describedThe some details known.Those skilled in the art as described above, completely it can be appreciated how implementing technology disclosed hereinScheme.
Although being described in detail by some specific embodiments of the example to the disclosure, the skill of this fieldArt personnel it should be understood that above example merely to be illustrated, rather than in order to limit the scope of the present disclosure.The skill of this fieldArt personnel are it should be understood that can modify to above embodiments in the case where not departing from the scope of the present disclosure and spirit.This public affairsThe range opened is defined by the following claims.