CN113766533B - Slice processing method and device based on co-construction sharing and storage medium - Google Patents

Abstract

The embodiment of the invention provides a slice processing method, a slice processing device and a storage medium based on co-construction sharing, wherein the method comprises the following steps: selecting a core network for the terminal based on a pre-established PLMN slice information coincidence list of the current cell where the terminal is located; and/or when the PDU conversation establishment or modification process is triggered, if the slice information under the PDU conversation is determined to be in the PLMN slice information coincidence list, the PDU conversation is processed; the PLMN slice information superposition table comprises cell and core network slice superposition information under all PLMNs of the current cell. By creating the PLMN slice information coincidence list in advance, the embodiment of the invention reduces the complexity and the time consumption degree when the processing terminal selects the core network and other processes trigger PDU session establishment or modification, greatly improves the processing efficiency of the co-building sharing and slicing functions, reduces the processing time delay and ensures the service stability.

Description

Slice processing method and device based on co-construction sharing and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a slice processing method, apparatus, and storage medium based on co-construction sharing.

Background

In the latest fifth generation new air interface (5G NR,the 5th Generation New Radio) communication, in order to enable more refined management and wider coverage of the current communication technology, the protocol introduces two important concepts, one is co-building sharing, and the second is slicing. Co-building sharing refers to: under a co-established shared architecture, multiple participating operators are allowed to share resources under a shared network in common under a negotiation and admission-based allocation principle. The network is referred to herein as a radio access network, and the resources are referred to as radio resources. Slicing refers to: different configurations are configured for different network slices to achieve the function that different slices possess different performance. Since slices are based on protocol data unit PDU (Protocol data unit) session functionality, different PDU sessions may possess different slice characteristics.

The two functions are important application functions in 5G NR, and the service efficiency of network side equipment and the personalized setting capability of a user are improved in mutual influence, so that the method is an important index for detecting the communication performance of the 5G NR at present, and is also the development direction of key requirements of operators. Therefore, most of the network side devices and core network devices need to implement both functions at present. The protocol also requires in this respect that, according to the description of the protocol, when the user selects the core network during the access procedure, if the user carries slice information, the core network needs to be selected according to the slice information. Meanwhile, when the PDU session is processed in important processes such as switching and reestablishing of a user, whether the slice is supported or not needs to be judged, and different bottom layer parameters are configured according to different slices so as to achieve the purpose of personalized setting.

When the above functions are implemented, existing slices need to be screened. The radio resources of the network side equipment are distributed according to the cells, the same cell of the network side equipment needs to support different operators, and the network side equipment comprises PLMNs (Public Land Mobile Network, public land mobile networks) of different operators, and different slicing information is planned under the PLMNs of different operators. Because the slicing is set in the same operator, on the premise of co-building sharing, each time the slicing is selected, the operator is selected first, and then the slicing is selected according to the operator. This procedure greatly increases the complexity and time-consuming level of the network side device when the processing terminal selects the core network and other procedures trigger PDU session establishment and modification. Therefore, it is important to improve the processing efficiency of the co-building sharing and slicing functions.

Disclosure of Invention

In order to solve or at least partially solve the above problems, an embodiment of the present invention provides a slice processing method, apparatus and storage medium based on co-building sharing.

In a first aspect, an embodiment of the present invention provides a slice processing method based on co-construction sharing, including:

selecting a core network for the terminal based on a pre-established Public Land Mobile Network (PLMN) slice information coincidence list of the current cell where the terminal is located; and/or the number of the groups of groups,

When a protocol data unit PDU session establishment or modification process is triggered, if the slice information under the PDU session is determined to be in a PLMN slice information coincidence list of the current cell, processing the PDU session;

the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

Optionally, the step of creating the PLMN slice information coincidence table of the current cell specifically includes:

and when the cell is established, NG is established or NG configuration is updated, circulating through all PLMNs of the current cell:

for the current PLMN, inquiring all core networks containing the current PLMN in the core networks connected with the network side equipment;

screening all slice information corresponding to a current PLMN under a core network containing the current PLMN;

comparing the slice information corresponding to the current PLMN under the core network containing the current PLMN with the slice information under the current PLMN of the current cell to obtain the cell under the current PLMN and core network slice superposition information;

after all PLMNs of the current cell are traversed circularly, obtaining the cell and core network slice superposition information under all PLMNs of the current cell, and establishing a PLMN slice superposition table of the current cell.

Optionally, the selecting a core network for the terminal based on a pre-created public land mobile network PLMN slice information coincidence table of the current cell where the terminal is located specifically includes:

when receiving an attachment request sent by a terminal, determining a target PLMN according to a PLMN selected by the terminal;

searching the superposition information of the cell and the core network slice under the target PLMN based on the PLMN slice superposition table of the current cell;

inquiring whether slice information carried by a terminal is in the superposition information of the cell and the core network slice under the target PLMN, if so, carrying out weight dimension reduction sequencing on the core network corresponding to the inquired slice information;

and selecting the attached core network for the terminal based on the weight dimension reduction sequencing result.

Optionally, after the step when the protocol data unit PDU session establishment or modification procedure is triggered, the method further includes:

and if the slice information under the PDU session is not in the PLMN slice information coincidence list of the current cell, refusing the establishment or modification of the PDU session.

In a second aspect, an embodiment of the present invention provides a slice processing apparatus based on co-building sharing, including:

the first processing module is used for selecting a core network for the terminal based on a pre-established PLMN slice information coincidence list of the current cell where the terminal is located; and/or the number of the groups of groups,

The second processing module is used for processing the PDU session if the slice information under the PDU session is determined to be in the PLMN slice information coincidence list of the current cell when the establishment or modification process of the PDU session is triggered;

the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

In a third aspect, an embodiment of the present invention provides a network side device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements the following steps when executing the computer program:

selecting a core network for the terminal based on a pre-established Public Land Mobile Network (PLMN) slice information coincidence list of the current cell where the terminal is located; and/or the number of the groups of groups,

when a protocol data unit PDU session establishment or modification process is triggered, if the slice information under the PDU session is determined to be in a PLMN slice information coincidence list of the current cell, processing the PDU session;

the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

Optionally, the step of creating the PLMN slice information coincidence table of the current cell specifically includes:

and when the cell is established, NG is established or NG configuration is updated, circulating through all PLMNs of the current cell:

for the current PLMN, inquiring all core networks containing the current PLMN in the core networks connected with the network side equipment;

screening all slice information corresponding to a current PLMN under a core network containing the current PLMN;

comparing the slice information corresponding to the current PLMN under the core network containing the current PLMN with the slice information under the current PLMN of the current cell to obtain the cell under the current PLMN and core network slice superposition information;

after all PLMNs of the current cell are traversed circularly, obtaining the cell and core network slice superposition information under all PLMNs of the current cell, and establishing a PLMN slice superposition table of the current cell.

Optionally, the selecting a core network for the terminal based on a pre-created public land mobile network PLMN slice information coincidence table of the current cell where the terminal is located specifically includes:

when receiving an attachment request sent by a terminal, determining a target PLMN according to a PLMN selected by the terminal;

searching the superposition information of the cell and the core network slice under the target PLMN based on the PLMN slice superposition table of the current cell;

Inquiring whether slice information carried by a terminal is in the superposition information of the cell and the core network slice under the target PLMN, if so, carrying out weight dimension reduction sequencing on the core network corresponding to the inquired slice information;

and selecting the attached core network for the terminal based on the weight dimension reduction sequencing result.

Optionally, after the step when the protocol data unit PDU session establishment or modification procedure is triggered, the method further includes:

and if the slice information under the PDU session is not in the PLMN slice information coincidence list of the current cell, refusing the establishment or modification of the PDU session.

In a fourth aspect, embodiments of the present invention provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the co-construction sharing based slice processing method as provided in the first aspect.

According to the slice processing method, device and storage medium based on the co-construction sharing, the PLMN slice information coincidence list is created in advance before the terminal is accessed into the cell, the core network is selected for the terminal based on the PLMN slice information coincidence list created in advance, PDU session admission confirmation of service establishment, switching, recovery, reestablishment and other processes is carried out, complexity and time consumption degree of network side equipment when the processing terminal selects the core network and other processes trigger PDU session establishment and modification are reduced, processing efficiency of the co-construction sharing and slicing functions is greatly improved, processing time delay is reduced, service stability is guaranteed, and 5G mass user requirements can be met.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a slice screening flow in a terminal attachment process in the prior art;

fig. 2 is a schematic diagram of a PDU session related process flow of service establishment, handover, recovery and reestablishment in the prior art;

FIG. 3 is a schematic flow chart of a slice processing method based on co-building sharing according to an embodiment of the present invention;

fig. 4 is a schematic flow chart of creating a PLMN slice information coincidence table of the current cell according to an embodiment of the present invention;

fig. 5 is a schematic flow chart of selecting a core network for a terminal based on a public land mobile network PLMN slice information coincidence table of a current cell where the terminal is located, which is created in advance according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a PDU session related process flow of service establishment, handover, recovery and re-establishment provided in the embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a slice processing device based on co-building sharing according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a network side device according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

One of the great features of 5G NR is low latency and high reliability, which affect the experience perception of the user in the important processes of user access, handover, re-establishment, etc., while co-building sharing and slicing affect these processes. Therefore, the invention provides a co-building shared slice optimization scheme on the premise of not violating a communication protocol on the basis of the realization of the prior art. The invention aims to improve the efficiency of the network side equipment, reduce the time delay of each process of a user, increase the fault tolerance rate of the network side equipment, simplify the related process of the user and improve the perception of the user.

The network side device refers to a radio access network device including a base station, which may be used for access of a terminal device.

The 5G NR related protocol provides that when the terminal is accessed, the network side equipment needs to select a proper core network for the terminal according to a certain rule (including a slicing rule); when the terminal generates the flows of service establishment, switching, recovery (Resume), reestablishment and the like, and triggers one or more PDU sessions to be established and modified, the network side equipment needs to match the corresponding slices and provide corresponding configuration.

When a terminal is accessed, the protocol flow is specifically as follows: if the terminal carries a Temp ID (temporary ID), the network side equipment directly selects the core network according to the parameter Temp ID; if the terminal does not carry the Temp ID, but carries slice information, the network side equipment selects a core network which supports terminal slice and network side equipment slice simultaneously according to the slice information provided by the terminal; if the terminal does not carry slice information, a default core network is selected.

Fig. 1 is a schematic diagram of a slice screening flow in a terminal attachment process in the prior art. As shown in fig. 1, the slice screening process in the terminal attachment process specifically includes:

S100, after the RRC connection is established;

s101, when the network side equipment receives an attachment request sent by a terminal, judging whether the attachment request carries slice information, if so, executing a step S102, otherwise, executing a step S110;

s102, screening PLMN of a current cell of network side equipment according to PLMN selected by a terminal, and taking the PLMN as the current PLMN;

s103, searching slice information supported under the current PLMN;

s104, judging whether the slice information carried by the terminal is coincident with the slice information supported under the current PLMN, namely screening slices supported under the current PLMN according to the slice information carried by the terminal, and storing the intersection of the two slice information, if the intersection is empty, indicating that the slice information carried by the terminal is not coincident with the slice information supported under the current PLMN, jumping to the step S110, otherwise, executing the step S105;

s105, searching all core networks supporting the current PLMN in the core networks connected with the current network side equipment;

s106, screening slice information of each core network supporting the current PLMN under the current PLMN range;

s107, screening out a core network corresponding to the slice information with the intersection with the slice information stored in S104 from the slice information obtained in S106;

S108, on the basis of the core network obtained in S107, performing core network weight dimension reduction sequencing.

S109, selecting the most suitable core network for attachment connection;

s110, attaching by using a default core network.

In order to intuitively feel the specific situation of the slice screening flow in the existing terminal attachment process, the invention defines several parameters to measure the current scheme. Is provided with

Ncp: the number of PLMNs in a cell is 144 at maximum

Nps: the number of slices under one PLMN is 1024 at maximum

Nga: the number of core networks under a network side device is 12 at maximum

Nap: the number of PLMNs contained in a core network is 256

Nt: the number of loops of the core network is selected. Nt=ncp+ Nps + (Nga Nap Nps)

In the current implementation scheme, the network side equipment searches a core network with a suitable slice for one terminal, the upper limit of the required cycle number Nt is 3146896, the processing amount is huge, the time consumption is long, and the occupied resources are large.

When other processes trigger PDU session establishment and modification occur at the terminal, the protocol process is specifically: according to the slice information of each PDU session in the message, the network side equipment current wireless resource and the slice information of the core network connected by the network side equipment select the PDU session accepting the intersection of the three slices for post-processing, and reject the rest. Fig. 2 is a schematic diagram of a PDU session related process flow of service establishment, handover, recovery and reestablishment in the prior art, including:

S200, the network side equipment receives the request for establishing and modifying PDU session in the flows of service establishment, switching, recovery, reestablishment and the like;

s201, checking slice information under a current PLMN of a current cell;

s202, confirming whether slice information under PDU session is supported under the current PLMN of the current cell, if so, executing step S203, otherwise, executing step S204;

s203, performing required PDU session operation;

s204, rejecting the current PDU session.

According to the existing flow, the specific situation of the number of slice confirmation cycles (Nto) required by the flow such as current processing and switching can be realized: anto=ncp+ Nps. The upper limit of the current Nto is 1168.

The existing process only checks the slice supported by the PLMN in the current cell, and cannot ensure that the core network supports the slice, so that service interruption is possibly caused, terminal connection is unstable, and terminal use experience is poor.

Therefore, in order to improve the slice screening flow of the existing terminal attachment process and the flow of triggering PDU session establishment and modification, the invention improves the processing efficiency, reduces the time delay and the energy consumption, and increases the stability of the user data service, and provides the slice processing method based on the co-construction sharing.

Fig. 3 is a flow chart of a slice processing method based on co-construction sharing according to an embodiment of the present invention, including:

S300, selecting a core network for a terminal based on a pre-established PLMN slice information coincidence list of a current cell where the terminal is located;

the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

Specifically, in this embodiment, before the terminal attaches to access, the network side device first creates a public land mobile network PLMN slice information coincidence table of the current cell where the terminal is located in advance.

In the embodiment of the invention, one cell contains Ncp PLMNs, nps slices are supported under one PLMN, the number of core networks under one network side device is Nga, and the number of PLMNs contained in one core network is Nap.

The PLMN slice information superposition table of the current cell where the terminal is located consists of slice superposition information of cells under all PLMNs and core networks within the range of the cell where the terminal is located. Comparing the slice information supported by each PLMN in the current cell with the slice information supported by the corresponding PLMN in the core network connected with the network side equipment, and reserving the intersection of the two slice information to obtain the slice coincidence information of the cells under all PLMNs in the cell range of the terminal and the core network.

Before the cell is activated and used, a PLMN slice information coincidence list is created in advance, and network side equipment can use the PLMN slice information coincidence list to inquire every time the need to check whether a slice under the PLMN selected by the terminal accords with the cell and the core network in the cell range.

The network side equipment selects a core network for the terminal based on a pre-established PLMN slice information coincidence table of the current cell and slice information carried by the terminal, specifically, the network side equipment searches slice coincidence information of a cell corresponding to the PLMN selected by the terminal and the core network in the PLMN slice information coincidence table of the current cell according to the PLMN selected by the terminal, then searches whether slice information carried by the terminal is contained in the slice coincidence information of the cell corresponding to the PLMN selected by the terminal and the core network, if the corresponding slice information can be found, selects a proper core network for the terminal in the core network corresponding to the searched slice information, and accesses the terminal into the core network.

And/or the number of the groups of groups,

s301, when a protocol data unit PDU session establishment or modification process is triggered, if the slice information under the PDU session is determined to be in a PLMN slice information coincidence list of the current cell, processing the PDU session;

The PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

Specifically, when the protocol data unit PDU session establishment or modification process is triggered, the network side device determines whether the slice information under the PDU session is in the PLMN slice information coincidence table of the current cell by using the PLMN slice information coincidence table of the current cell, if the slice information under the PDU session is in the PLMN slice information coincidence table of the current cell, it indicates that the slice information under the PDU session is the intersection of the current radio resource and the slice information of the core network connected by the network side device, and the slice can be doubly supported by the cell and the core network, and then performs PDU session related processing such as service establishment, switching, recovery and the like according to the slice, so that service is ensured not to be interrupted, terminal connection is stable, and terminal use experience is improved.

According to the slice processing method based on the co-construction sharing, which is provided by the embodiment of the invention, before the terminal is accessed into the cell, the PLMN slice information coincidence list is created in advance, the core network is selected for the terminal based on the PLMN slice information coincidence list created in advance, PDU session admission confirmation of service establishment, switching, recovery, reestablishment and other processes is carried out, the complexity and the time consumption degree of network side equipment when the processing terminal selects the core network and other processes trigger PDU session establishment and modification are reduced, the processing efficiency of the co-construction sharing and slicing functions is greatly improved, the processing time delay is reduced, the service stability is ensured, and the 5G mass user requirements can be met.

On the basis of the foregoing embodiments, fig. 4 is a schematic flow chart of creating a PLMN slice information superposition table of the current cell according to the embodiment of the present invention, where, as shown in fig. 4, creating the PLMN slice information superposition table of the current cell specifically includes:

s400, circularly traversing all PLMNs of the current cell when the cell is established, NG is established or NG configuration is updated:

specifically, when the cell is established, NG is established or NG is configured to be updated, a PLMN slice information superposition table is created, steps S401 to S403 are circularly executed until all PLMNs of the current cell are traversed, wherein,

s401, inquiring all core networks containing the current PLMN in the core networks connected with the network side equipment aiming at the current PLMN;

and taking any PLMN in all PLMNs of the current cell as the current PLMN, and finding all core networks containing the current PLMN in the core networks connected by the network side equipment.

S402, screening out slice information corresponding to a current PLMN under a core network containing the current PLMN;

and screening out slice information supported under the current PLMN under the current core network for each core network containing the current PLMN, and finally obtaining slice information corresponding to the current PLMN under the core network containing the current PLMN.

S403, comparing the slice information corresponding to the current PLMN under the core network containing the current PLMN with the slice information under the current PLMN of the current cell to obtain the cell under the current PLMN and core network slice superposition information;

specifically, comparing the slice information corresponding to the current PLMN under the core network containing the current PLMN with the slice information supported under the current PLMN of the current cell, finding the slice information supported by both the cell and the core network, i.e. reserving the intersection of the two slice information, and obtaining the superposition information of the cell under the current PLMN and the core network slice.

The above steps S401 to S403 are performed for each PLMN of the current cell until all PLMNs of the current cell are traversed.

S404, after all PLMNs of the current cell are traversed circularly, obtaining the cell and core network slice superposition information under all PLMNs of the current cell, and establishing a PLMN slice superposition table of the current cell.

Specifically, according to the superposition information of the cells under all PLMNs of the current cell and the core network slice, a PLMN slice information superposition table of the current cell is established, and then the superposition information of the cells under the corresponding PLMNs and the core network slice can be searched according to the PLMNs, so that the slice information supported by the cells and the core network can be obtained.

According to the above steps, it can be understood that the number of cycles required for the procedure of obtaining the PLMN slice information coincidence list of the current cell where the terminal is located is specifically:

Nt1＝Ncp*(Nps+Nga*Nap*Nps)

as already mentioned in the above embodiments, ncp is the number of PLMNs in one cell; nps is the number of slices under one PLMN; nga is the number of core networks under one network side device; nap is the number of PLMNs contained in a core network.

Most of the situations occur when the network side equipment is just started and only once before/during each cell is activated because of the flow of acquiring the PLMN slice information coincidence list of the current cell where the terminal is located, and the terminal cannot sense. So Nt1 may not account for subsequent calculations.

The slice processing method based on the co-construction sharing provided by the embodiment of the invention creates the PLMN slice information superposition table in advance for the subsequent procedures, reduces the complexity and the time consumption degree of network side equipment when the processing terminal selects the core network and other procedures trigger PDU session establishment and modification, reduces the processing time delay and ensures that the user perception is good.

Based on the above embodiment, the selecting a core network for a terminal based on a pre-created public land mobile network PLMN slice information coincidence table of a current cell where the terminal is located specifically includes:

When receiving an attachment request sent by a terminal, determining a target PLMN according to a PLMN selected by the terminal;

searching the coincidence information of the cell and the core network slice under the target PLMN based on the PLMN slice information coincidence table of the current cell;

inquiring whether slice information carried by a terminal is in the superposition information of the cell and the core network slice under the target PLMN, if so, carrying out weight dimension reduction sequencing on the core network corresponding to the inquired slice information;

and selecting the attached core network for the terminal based on the weight dimension reduction sequencing result.

Specifically, fig. 5 is a schematic flow chart of selecting a core network for a terminal based on a pre-created public land mobile network PLMN slice information coincidence table of a current cell where the terminal is located, as shown in fig. 5, and selecting the core network for the terminal based on the pre-created public land mobile network PLMN slice information coincidence table of the current cell where the terminal is located specifically includes:

s500, after the RRC connection is established, when the network side equipment receives an attachment request sent by a terminal, determining whether the attachment request carries slice information or not, if so, executing a step S501, otherwise, executing a step S506;

S501, determining a PLMN corresponding to a current cell according to a PLMN selected by a terminal, and taking the PLMN corresponding to the current cell as a target PLMN;

s502, searching the coincidence information of the cell and the core network slice under the target PLMN based on the PLMN slice information coincidence table of the current cell;

s503, inquiring whether the slice information carried by the terminal is in the superposition information of the cell under the target PLMN and the core network slice, if so, executing the step S504, otherwise, executing the step S506;

s504, performing weight dimension reduction sequencing on the core network corresponding to the queried slice information;

wherein, the weight dimension-reducing sorting of the core network relates to a specific core network selection algorithm, and the invention is not limited to the specific core network selection algorithm;

s505, selecting a core network for the terminal to attach to based on the weight dimension reduction sequencing result;

it can be understood that the weight dimension reduction sequencing result is a factor mainly considered in selecting a core network for the terminal, and on the basis of considering the weight dimension reduction sequencing result, the most suitable core network can be selected for attachment connection for the terminal based on other factors, such as load balancing.

S506, attaching connection is carried out by using a default core network.

And if the slice information carried by the terminal is not in the superposition information of the cell under the target PLMN and the core network slice, using a default core network to carry out attachment connection for the terminal.

In the terminal access process provided by the embodiment of the invention, the required cycle number is Nt2, and then the following formula can be adopted:

Nt2＝Ncp+Nps

the number of the chip screening cycles is only Nt2 when one terminal is accessed. From the calculation, the maximum value of Nt2 is 1138 times. Compared with 3146896 times of the cycle number Nt of slice screening when the terminal is accessed in the prior art, the value is greatly improved, and the improvement effect is 2765 times. The time delay of terminal access is greatly reduced, the efficiency of network side equipment is improved, and the energy consumption is reduced.

On the basis of the above embodiment, after the step when the protocol data unit PDU session establishment or modification procedure is triggered, the method further includes:

and if the slice information under the PDU session is not in the PLMN slice information coincidence list of the current cell, refusing the establishment or modification of the PDU session.

Specifically, fig. 6 is a schematic diagram of a PDU session related process flow for service establishment, handover, recovery and reestablishment provided in an embodiment of the present invention, and as shown in fig. 6, the PDU session related process flow for service establishment, handover, recovery and reestablishment specifically includes:

s600, the network side equipment receives the request for establishing and modifying PDU session in the processes of establishing, switching, recovering and reestablishing the service related to the terminal;

S601, checking a PLMN slice information superposition table of a current cell;

s602, confirming whether slice information under the PDU session exists in a PLMN slice information superposition table of the current cell, if so, executing a step S603, otherwise, executing a step S604;

s603, performing required PDU session operation;

s604, refusing the establishment or modification of the current PDU session.

The optimized process of service establishment, switching, recovery, reestablishment and the like changes the slicing judgment flow of PDU session into a PLMN slicing information coincidence list, and the number of times of circulation needed by the flow is Nto2, so that the following formula can be obtained:

Nto2＝Ncp+Nps

from the calculation, the maximum value of Nto2 is 1138 times. Compared with the PDU session related processing flow of service establishment, switching, recovery and reestablishment in the prior art, the PDU session related processing flow of service establishment, switching, recovery and reestablishment after optimization has unchanged circulation times, but simultaneously ensures the support of the current cell and core network of the network side equipment to the slice. On the premise of unchanged complexity and unchanged energy consumption, the business stability of a plurality of processes is increased, and the user experience is greatly improved.

Fig. 7 is a schematic structural diagram of a slice processing apparatus based on co-building sharing according to an embodiment of the present invention, including: a first processing module 710 and/or a second processing module 720, wherein,

A first processing module 710, configured to select a core network for a terminal based on a pre-created PLMN slice information coincidence list of a current cell in which the terminal is located;

specifically, the first processing module 710 is configured to obtain, before attachment access of the terminal, a PLMN slice information coincidence list of a current cell in which the terminal is located.

In the embodiment of the invention, one cell contains Ncp PLMNs, nps slices are supported under one PLMN, the number of core networks under one network side device is Nga, and the number of PLMNs contained in one core network is Nap.

The PLMN slice information superposition table of the current cell where the terminal is located consists of slice superposition information of cells under all PLMNs and core networks within the range of the cell where the terminal is located. Comparing the slice information supported by each PLMN in the current cell with the slice information supported by the corresponding PLMN in the core network connected with the network side equipment, and reserving the intersection of the two slice information to obtain the slice coincidence information of the cells under all PLMNs in the cell range of the terminal and the core network.

The first processing module 710 creates a PLMN slice information coincidence table in advance before the cell is activated for use, and can use this PLMN slice information coincidence table for query whenever it is required to check in the cell range whether a slice under the PLMN selected by the terminal is both cell and core network compliant.

The first processing module 710 selects a core network for the terminal according to the PLMN slice information coincidence table of the current cell and slice information carried by the terminal, specifically, the first processing module 710 searches, in the PLMN slice information coincidence table of the current cell, slice coincidence information of a cell corresponding to the PLMN selected by the terminal and the core network according to the PLMN selected by the terminal, then searches whether slice information carried by the terminal is included in slice coincidence information of the cell corresponding to the PLMN selected by the terminal and the core network, if the corresponding slice information can be found, selects a proper core network for the terminal in the core network corresponding to the found slice information, and accesses the terminal to the core network.

And a second processing module 720, configured to, when the protocol data unit PDU session establishment or modification procedure is triggered, process the PDU session if it is determined that the slice information under the PDU session is in the PLMN slice information coincidence table of the current cell.

Specifically, when the protocol data unit PDU session establishment or modification process is triggered, the second processing module 720 determines whether the slice information under the PDU session is in the PLMN slice information coincidence table of the current cell by using the PLMN slice information coincidence table of the current cell, if the slice information under the PDU session is in the PLMN slice information coincidence table of the current cell, it indicates that the slice information under the PDU session is the intersection of the current radio resource and the slice information of the core network connected by the network side device, and this slice can be supported by the cell and the core network, and then performs PDU session related processing such as service establishment, switching, recovery and the like according to this slice, so that it can be ensured that the service is not interrupted, the terminal connection is stable, and the terminal use experience is improved.

The slice processing device based on the co-construction sharing provided by the embodiment of the invention creates the PLMN slice information coincidence list in advance before the terminal accesses the cell, selects the core network for the terminal based on the PLMN slice information coincidence list created in advance, performs PDU session admission confirmation of service establishment, switching, recovery, reestablishment and other processes, reduces the complexity and time consumption degree of network side equipment when the processing terminal selects the core network and other processes trigger PDU session establishment and modification, greatly improves the processing efficiency of the co-construction sharing and slicing functions, reduces the processing time delay, ensures the service stability, and can meet the requirement of 5G mass users.

On the basis of the above embodiment, the first processing module 710 is specifically configured to:

and when the cell is established, NG is established or NG configuration is updated, circulating through all PLMNs of the current cell:

for the current PLMN, inquiring all core networks containing the current PLMN in the core networks connected with the network side equipment;

screening all slice information corresponding to a current PLMN under a core network containing the current PLMN;

comparing the slice information corresponding to the current PLMN under the core network containing the current PLMN with the slice information under the current PLMN of the current cell to obtain the cell under the current PLMN and core network slice superposition information;

After all PLMNs of the current cell are traversed circularly, obtaining the cell and core network slice superposition information under all PLMNs of the current cell, and establishing a PLMN slice superposition table of the current cell.

On the basis of the above embodiment, the first processing module 710 is specifically configured to:

when receiving an attachment request sent by a terminal, determining a target PLMN according to a PLMN selected by the terminal;

searching the coincidence information of the cell and the core network slice under the target PLMN based on the PLMN slice information coincidence table of the current cell;

inquiring whether slice information carried by a terminal is in the superposition information of the cell and the core network slice under the target PLMN, if so, carrying out weight dimension reduction sequencing on the core network corresponding to the inquired slice information;

and selecting the attached core network for the terminal based on the weight dimension reduction sequencing result.

On the basis of the above embodiment, the second processing module 720 is further configured to:

and if the slice information under the PDU session is not in the PLMN slice information coincidence list of the current cell, refusing the establishment or modification of the PDU session.

The slice processing device based on co-building sharing provided in the embodiment of the present invention is used to implement the slice processing method embodiment based on co-building sharing, so that the descriptions and definitions in the foregoing method embodiments may be used for understanding each functional module in the embodiment of the present invention, and are not repeated herein.

Fig. 8 is a schematic structural diagram of a network side device according to an embodiment of the present invention, as shown in fig. 8, the network side device 800 may include at least one processor 810, a memory 820, at least one user interface 830, and a transceiver 840. The various components in network-side device 800 are coupled together by bus system 850. It is to be appreciated that bus system 850 is employed to facilitate connective communication between these components. The bus system 850 includes a power bus, a control bus, and a status signal bus in addition to the data bus. The various buses are labeled in fig. 8 as a bus system 850, which may include any number of interconnected buses and bridges, and in particular one or more processors, represented by processor 810, and various circuits of the memory, represented by memory 820, all of which are linked together for clarity. The bus system may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., all as are well known in the art and, therefore, further description of embodiments of the present invention will not be provided. The bus interface provides an interface. Transceiver 840 may be a plurality of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 830 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

It will be appreciated that the memory 820 in embodiments of the invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 820 described in connection with embodiments of the present invention includes, but is not limited to, these and any other suitable types of memory.

The processor 810 is responsible for managing the bus system and general processing, and the memory 820 may store computer programs or instructions that the processor 810 uses in performing the operations, and in particular, in one embodiment, the processor performs the following steps:

selecting a core network for the terminal based on a pre-established PLMN slice information coincidence list of the current cell where the terminal is located; and/or the number of the groups of groups,

when a protocol data unit PDU session establishment or modification process is triggered, if the slice information under the PDU session is determined to be in a PLMN slice information coincidence list of the current cell, processing the PDU session;

the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

Specifically, in this embodiment, before the terminal attaches to access, the processor 810 first obtains the PLMN slice information coincidence list of the current cell in which the terminal is located.

The PLMN slice information superposition table of the current cell where the terminal is located consists of slice superposition information of cells under all PLMNs and core networks within the range of the cell where the terminal is located. Comparing the slice information supported by each PLMN in the current cell with the slice information supported by the corresponding PLMN in the core network connected with the network side equipment, and reserving the intersection of the two slice information to obtain the slice coincidence information of the cells under all PLMNs in the cell range of the terminal and the core network.

Before the cell is activated for use, a PLMN slice information coincidence table is created in advance, and the processor 810 can use this PLMN slice information coincidence table to query whenever it is required to check in the cell range whether a slice under the PLMN selected by the terminal is both cell and core network compliant.

The processor 810 selects a core network for the terminal according to the PLMN slice information coincidence list of the current cell and slice information carried by the terminal, specifically searches the cell corresponding to the PLMN selected by the terminal and the slice coincidence information of the core network in the PLMN slice information coincidence list of the current cell according to the PLMN selected by the terminal, searches whether the cell corresponding to the PLMN selected by the terminal and the slice coincidence information of the core network contain the slice information carried by the terminal, and if the corresponding slice information can be found, selects a proper core network for the terminal in the core network corresponding to the searched slice information, and accesses the terminal into the core network.

When the protocol data unit PDU session establishment or modification process is triggered, the processor 810 determines whether the slice information under the PDU session is in the PLMN slice information coincidence list of the current cell by using the PLMN slice information coincidence list of the current cell, if the slice information under the PDU session is in the PLMN slice information coincidence list of the current cell, it indicates that the slice information under the PDU session is the intersection of the current radio resource and the slice information of the core network connected by the network side device, and the slice can obtain dual support of the cell and the core network, and then performs PDU session related processing such as service establishment, handover, recovery and the like according to the slice, so that the service is ensured not to be interrupted, the terminal connection is stable, and the terminal use experience is improved.

The method steps disclosed in the embodiments of the present invention may be applied to the processor 810 or implemented by the processor 810. The processor 810 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry in hardware or instructions in software in processor 810. The processor 810 may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. Which is located in a memory 820, and a processor 810 reads information in the memory 820 and performs the steps of the above method in combination with its hardware.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP devices, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in embodiments of the application. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The network side equipment provided by the embodiment of the application establishes the PLMN slice information coincidence list in advance before the terminal accesses the cell, selects the core network for the terminal based on the PLMN slice information coincidence list established in advance, performs PDU session admission confirmation of service establishment, switching, recovery, reestablishment and other processes, reduces the complexity and the time consumption degree of the network side equipment when the processing terminal selects the core network and other processes trigger PDU session establishment and modification, greatly improves the processing efficiency of the co-establishment sharing and slicing functions, reduces the processing time delay, ensures the service stability and can meet the requirements of 5G mass users.

On the basis of the foregoing embodiment, the step of creating the PLMN slice information coincidence table of the current cell specifically includes:

and when the cell is established, NG is established or NG configuration is updated, circulating through all PLMNs of the current cell:

for the current PLMN, inquiring all core networks containing the current PLMN in the core networks connected with the network side equipment;

screening all slice information corresponding to a current PLMN under a core network containing the current PLMN;

comparing the slice information corresponding to the current PLMN under the core network containing the current PLMN with the slice information under the current PLMN of the current cell to obtain the cell under the current PLMN and core network slice superposition information;

after all PLMNs of the current cell are traversed circularly, obtaining the cell and core network slice superposition information under all PLMNs of the current cell, and establishing a PLMN slice superposition table of the current cell.

Based on the above embodiment, the selecting a core network for a terminal based on a pre-created public land mobile network PLMN slice information coincidence table of a current cell where the terminal is located specifically includes:

when receiving an attachment request sent by a terminal, determining a target PLMN according to a PLMN selected by the terminal;

Searching the coincidence information of the cell and the core network slice under the target PLMN based on the PLMN slice information coincidence table of the current cell;

inquiring whether slice information carried by a terminal is in the superposition information of the cell and the core network slice under the target PLMN, if so, carrying out weight dimension reduction sequencing on the core network corresponding to the inquired slice information;

and selecting the attached core network for the terminal based on the weight dimension reduction sequencing result.

On the basis of the above embodiment, after the step when the protocol data unit PDU session establishment or modification procedure is triggered, the method further includes:

and if the slice information under the PDU session is not in the PLMN slice information coincidence list of the current cell, refusing the establishment or modification of the PDU session.

The network side device in the embodiment of the present invention executes the slice processing method based on the co-building sharing provided in the foregoing method embodiments, so the description and the definition in the foregoing method embodiments may be used for understanding the network side device in the embodiment of the present invention, and are not repeated herein.

The embodiments of the present invention further provide a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the slice processing method based on co-building sharing provided in the above method embodiments, for example, including: selecting a core network for the terminal based on a pre-established Public Land Mobile Network (PLMN) slice information coincidence list of the current cell where the terminal is located; and/or when the protocol data unit PDU session establishment or modification process is triggered, if the slice information under the PDU session is determined to be in the PLMN slice information coincidence list of the current cell, processing the PDU session; the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The slice processing method based on co-construction sharing is characterized by comprising the following steps of:

selecting a core network for the terminal based on a pre-established Public Land Mobile Network (PLMN) slice information coincidence list of the current cell where the terminal is located; and/or the number of the groups of groups,

when a protocol data unit PDU session establishment or modification process is triggered, if the slice information under the PDU session is determined to be in a PLMN slice information coincidence list of the current cell, processing the PDU session;

the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

2. The slice processing method based on co-construction sharing according to claim 1, wherein the step of creating the PLMN slice information coincidence table of the current cell specifically comprises:

and when the cell is established, NG is established or NG configuration is updated, circulating through all PLMNs of the current cell:

for the current PLMN, inquiring all core networks containing the current PLMN in the core networks connected with the network side equipment;

screening all slice information corresponding to a current PLMN under a core network containing the current PLMN;

comparing the slice information corresponding to the current PLMN under the core network containing the current PLMN with the slice information under the current PLMN of the current cell to obtain the cell under the current PLMN and core network slice superposition information;

after all PLMNs of the current cell are traversed circularly, obtaining the cell and core network slice superposition information under all PLMNs of the current cell, and establishing a PLMN slice superposition table of the current cell.

3. The slice processing method based on co-construction sharing according to claim 2, wherein the selecting a core network for a terminal based on a public land mobile network PLMN slice information coincidence table of a current cell where the terminal is located, specifically comprises:

When receiving an attachment request sent by a terminal, determining a target PLMN according to a PLMN selected by the terminal;

searching the superposition information of the cell and the core network slice under the target PLMN based on the PLMN slice superposition table of the current cell;

inquiring whether slice information carried by a terminal is in the superposition information of the cell and the core network slice under the target PLMN, if so, carrying out weight dimension reduction sequencing on the core network corresponding to the inquired slice information;

and selecting the attached core network for the terminal based on the weight dimension reduction sequencing result.

4. The slice processing method based on co-construction sharing according to claim 1, wherein after the step when a protocol data unit PDU session establishment or modification procedure is triggered, further comprising:

and if the slice information under the PDU session is not in the PLMN slice information coincidence list of the current cell, refusing the establishment or modification of the PDU session.

5. A slice processing apparatus based on co-construction sharing, comprising:

the first processing module is used for selecting a core network for the terminal based on a pre-established Public Land Mobile Network (PLMN) slice information coincidence list of the current cell where the terminal is located; and/or the number of the groups of groups,

The second processing module is used for processing the PDU session if the slice information under the PDU session is determined to be in the PLMN slice information coincidence list of the current cell when the establishment or modification process of the PDU session is triggered;

the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

6. A network side device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the computer program when executed by the processor performs the steps of:

selecting a core network for the terminal based on a pre-established Public Land Mobile Network (PLMN) slice information coincidence list of the current cell where the terminal is located; and/or the number of the groups of groups,

when a protocol data unit PDU session establishment or modification process is triggered, if the slice information under the PDU session is determined to be in a PLMN slice information coincidence list of the current cell, processing the PDU session;

the PLMN slice information superposition table of the current cell includes cell and core network slice superposition information under all PLMNs of the current cell.

7. The network side device according to claim 6, wherein the step of creating the PLMN slice information coincidence table of the current cell specifically includes:

and when the cell is established, NG is established or NG configuration is updated, circulating through all PLMNs of the current cell:

for the current PLMN, inquiring all core networks containing the current PLMN in the core networks connected with the network side equipment;

screening all slice information corresponding to a current PLMN under a core network containing the current PLMN;

comparing the slice information corresponding to the current PLMN under the core network containing the current PLMN with the slice information under the current PLMN of the current cell to obtain the cell under the current PLMN and core network slice superposition information;

after all PLMNs of the current cell are traversed circularly, obtaining the cell and core network slice superposition information under all PLMNs of the current cell, and establishing a PLMN slice superposition table of the current cell.

8. The network side device according to claim 6, wherein the selecting a core network for the terminal based on the pre-created public land mobile network PLMN slice information coincidence list of the current cell in which the terminal is located specifically includes:

when receiving an attachment request sent by a terminal, determining a target PLMN according to a PLMN selected by the terminal;

Searching the superposition information of the cell and the core network slice under the target PLMN based on the PLMN slice superposition table of the current cell;

inquiring whether slice information carried by a terminal is in the superposition information of the cell and the core network slice under the target PLMN, if so, carrying out weight dimension reduction sequencing on the core network corresponding to the inquired slice information;

and selecting the attached core network for the terminal based on the weight dimension reduction sequencing result.

9. The network side device according to claim 6, wherein after the step when the protocol data unit PDU session establishment or modification procedure is triggered, further comprising:

and if the slice information under the PDU session is not in the PLMN slice information coincidence list of the current cell, refusing the establishment or modification of the PDU session.

10. A non-transitory computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the co-construction sharing based slice processing method according to any one of claims 1 to 4.