CN110650503A - Network access method, device, system and computer readable storage medium - Google Patents

Network access method, device, system and computer readable storage medium Download PDF

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Publication number
CN110650503A
CN110650503A CN201810675107.4A CN201810675107A CN110650503A CN 110650503 A CN110650503 A CN 110650503A CN 201810675107 A CN201810675107 A CN 201810675107A CN 110650503 A CN110650503 A CN 110650503A
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China
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service
slice
unmatched
entity
network
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CN201810675107.4A
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CN110650503B (en
Inventor
谢沛荣
陈洁
龙彪
李文苡
刘柳
刘佳一凡
王庆扬
曹磊
赵晔
王波
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/06—Access restriction performed under specific conditions based on traffic conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic

Abstract

The disclosure relates to a network access method, a device, a system and a computer readable storage medium, and relates to the technical field of mobile communication. The method comprises the following steps: the PCF entity issues a slice selection strategy configured according to the service requirement to a UPF entity in the network slice so that the UPF entity can detect whether the network slice carries unmatched services or not; reallocating target network slices for unmatched services reported by the UPF entity according to the slice selection strategy; and sending the slice reselection information to a terminal corresponding to the unmatched service so that the terminal can access the unmatched service to the target network slice, wherein the slice reselection information comprises the identifier of the target network slice and the identifier or quintuple information of the unmatched service. The technical scheme disclosed by the invention can adapt to a complex and changeable network environment, so that the service requirement can be met by the service-accessed network slice.

Description

Network access method, device, system and computer readable storage medium
Technical Field
The present disclosure relates to the field of mobile communications technologies, and in particular, to a network access method, a network access apparatus, a network access system, and a computer-readable storage medium.
Background
The concept of network slices is introduced into the 5G system, and each network slice can have different mobility, safety, time delay, reliability and even charging modes, so that wide connection service is provided for various industries better.
In the related art, when a terminal initiates a service, the terminal determines which network slice the service is loaded on according to a slice selection policy issued in advance by a network side.
Disclosure of Invention
The inventors of the present disclosure found that the following problems exist in the above-described related art: the selection strategy of the network slice cannot adapt to a dynamic and complex network environment, so that the network slice bearing the service cannot meet the service requirement.
In view of this, the present disclosure provides a network access technical solution, which enables a network slice bearing a service to meet service requirements.
According to some embodiments of the present disclosure, there is provided a network access method, including: a PCF (Policy Control Function) entity issues a slice selection Policy configured according to a service requirement to a UPF (User Plane Function) entity in a network slice, so that the UPF entity detects whether the network slice carries an unmatched service; reallocating target network slices for the unmatched services reported by the UPF entity according to the slice selection strategy; and sending slice reselection information to a terminal corresponding to the unmatched service so that the terminal can access the unmatched service to the target network slice, wherein the slice reselection information comprises an identifier of the target network slice and an identifier or quintuple information of the unmatched service.
In some embodiments, the PCF entity configures the slice selection policy according to a service requirement uploaded by a user through a Network capability Exposure Function (NEF) entity, where the slice selection policy includes an identifier or quintuple information of a service and an identifier of a Network slice corresponding to the service.
In some embodiments, the PCF entity generates a traffic detection policy according to the slice selection policy, the traffic detection policy comprising an identification of traffic that does not match the network slice; and issuing the service detection strategy to the UPF entity so that the UPF detects whether the unmatched service is carried in the network slice according to the service detection strategy.
In some embodiments, the unmatched traffic is detected by the UPF entity using a deep packet inspection method.
In some embodiments, the unmatched service is reported to the PCF entity by the UPF entity through a session management function, SMF, entity.
In some embodiments, the UPF entity issues the slice reselection information to the terminal through an Access and Mobility Management Function (AMF) entity.
According to further embodiments of the present disclosure, there is provided a network access apparatus including: the processor is used for distributing target network slices for unmatched services reported by the UPF entity according to the slice selection strategy; and the transmitter is used for transmitting the slice selection strategy configured according to service requirements to the UPF entity in the network slice so that the UPF entity can detect whether the network slice bears the unmatched service or not, and is also used for transmitting slice reselection information to a terminal corresponding to the unmatched service so that the terminal can access the unmatched service to the target network slice, wherein the slice reselection information comprises the identifier of the target network slice and the identifier or quintuple information of the unmatched service.
In some embodiments, the processor configures the slice selection policy according to a service requirement uploaded by a user through an NEF entity, where the slice selection policy includes an identifier or quintuple information of a service and an identifier of a network slice corresponding to the service.
In some embodiments, the processor generates a traffic detection policy from the slice selection policy, the traffic detection policy including an identification of traffic that does not match the network slice; and the transmitter transmits the service detection strategy to the UPF entity so that the UPF detects whether the unmatched service is carried in the network slice according to the service detection strategy.
According to still other embodiments of the present disclosure, there is provided a network access apparatus including: a memory; and a processor coupled to the memory, the processor configured to perform one or more steps of the network access method in any of the above embodiments based on instructions stored in the memory device.
According to still further embodiments of the present disclosure, there is provided a network access system including: a PCF entity for performing the network access method in any of the above embodiments; the UPF entity is used for detecting whether the network slice bears unmatched services or not and reporting the unmatched services to the PCF entity; and the terminal is used for accessing the unmatched service into the target network slice.
According to still further embodiments of the present disclosure, there is provided a network access method including: PCF entity sends slice selection strategy configured according to service requirement to UPF entity in network slice; the UPF entity detects whether the network slice bears unmatched services or not; under the condition that the network slice bears unmatched services, the UPF entity reports the unmatched services to the PCF entity; the PCF entity redistributes a target network slice for the unmatched service according to the slice selection strategy; the PCF entity sends slice reselection information to a terminal corresponding to the unmatched service, wherein the slice reselection information comprises an identifier of the target network slice and an identifier or quintuple information of the unmatched service; and the terminal accesses the unmatched service to the target network slice.
According to still further embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements one or more steps of a network access method in any of the above embodiments.
In the above embodiment, the access network slice of the service can be dynamically adjusted in real time according to the slice selection policy issued by the PCF entity, so that the selection of the network slice can adapt to a complex and changeable network environment, and the network slice accessed by the service can meet the service requirement.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
fig. 1 illustrates a flow diagram of some embodiments of a network access method of the present disclosure;
FIG. 2 illustrates a flow diagram of some embodiments of step 110 of FIG. 1;
fig. 3 illustrates a signaling diagram of some embodiments of the network access method of the present disclosure;
fig. 4 illustrates a block diagram of some embodiments of a network access device of the present disclosure;
fig. 5 shows a block diagram of further embodiments of a network access device of the present disclosure;
fig. 6 illustrates a block diagram of still further embodiments of the network access device of the present disclosure;
fig. 7 illustrates a block diagram of some embodiments of a network access system of the present disclosure;
fig. 8 shows a flow diagram of further embodiments of the network access method of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 illustrates a flow diagram of some embodiments of a network access method of the present disclosure.
As shown in fig. 1, the method includes: step 110, issuing a slice selection strategy; step 120, reallocating the target network slices; and step 130, issuing slice reselection information.
In step 110, the PCF entity issues a slice selection policy configured according to the service requirement to the UPF entity in the network slice, so that the UPF entity detects whether the network slice carries an unmatched service.
In some embodiments, a user may upload a user's requirement for a network slice to a PCF entity via a NEF entity through a third-party application, and a network side may pre-configure a slice selection policy for a service related to the user on the PCF entity. For example, the slice selection policy may include an identifier or five-tuple information of the service and an identifier of the network slice corresponding to the service.
Therefore, the network side can adjust the slice selection strategy of the user in real time according to the service requirement uploaded by the user, thereby realizing the dynamic allocation of the network slices and leading the network slices accessed by the user to be capable of really meeting the current service requirement.
In some embodiments, the PCF entity may issue the slice selection policy to the UPF via the SMF of the corresponding network slice, and the UPF monitors according to the slice selection policy to determine whether the network slice carries an unmatched service. Step 110 may be implemented, for example, by the steps in fig. 2.
FIG. 2 illustrates a flow diagram of some embodiments of step 110 of FIG. 1.
As shown in fig. 2, step 110 includes: 1101, generating a service monitoring strategy according to the slice selection strategy; and step 1102, issuing a service detection strategy.
In step 1101, the PCF entity generates a service detection policy according to the slice selection policy, the service detection policy including an identifier of a service that cannot be carried in the network slice.
In step 1102, a service detection policy is issued to the UPF entity, so that the UPF detects whether the network slice carries an unmatched service according to the service detection policy.
In some embodiments, the PCF entity issues the service detection policy to the SMF entity of the corresponding network slice, and then controls the UPF entity through the SMF entity to perform deep packet inspection according to the slice selection policy, so as to determine whether the network slice carries an unmatched service.
For example, if the UPF entity does not detect that unmatched traffic is carried in the network slice, it continues to perform tasks through the network slice; and if the UPF entity detects that the network slice carries unmatched service, reporting the detected unmatched service to the PCF entity. For example, the UPF entity may report the unmatched traffic to the PCF entity through the SMF entity.
Therefore, the UPF entity can detect whether the network slice can meet the requirement of the current loaded service in real time, so as to make corresponding adjustment in time and improve the service execution efficiency.
The PCF entity, after receiving the unmatched service report, may continue processing through steps 120 and 130 in fig. 1.
In step 120, the target network slice is reallocated for the unmatched service reported by the UPF entity according to the slice selection policy. For example, the PCF entity may generate slice reselection information for non-matching traffic, including an identification of the non-matching traffic or quintuple information, and an identification of a target network slice suitable for the traffic.
In step 130, the slice reselection information is sent to the terminal corresponding to the unmatched service, so that the terminal accesses the unmatched service to the target network slice. For example, the UPF entity may issue the slice reselection information to the terminal through the AMF entity.
Therefore, the network slice for bearing the service can be dynamically adjusted in real time according to the real requirement of the user, so that the selection of the network slice can adapt to a complex and changeable network environment, and the network slice for accessing the service can meet the service requirement.
In some embodiments, in the 5G standard, a terminal may access multiple network slices at the same time, and the multiple network slices respectively carry different services of the terminal. Under the condition, the terminal judges whether the terminal has accessed the target network slice currently according to the received slice reselection information. If the access is already carried out, accessing the service corresponding to the slice reselection information to the target network slice for bearing; if not, the terminal firstly accesses the target network slice, and then accesses the service corresponding to the slice reselection information to the target network slice for bearing.
In order to make the technical solution of the present disclosure clearer, the network access method of the present disclosure is explained below by a signaling diagram of some embodiments in fig. 3.
Fig. 3 illustrates a signaling diagram of some embodiments of the network access method of the present disclosure.
As shown in fig. 3, in event 301, the network side pre-configures a slice selection policy in the PCF entity 33. For example, the slice selection policy may include one or more slice selection configurations, and each configuration may include a correspondence between an identifier (or five-tuple information) of one service and an identifier of a target network slice.
In event 302, the user initially accesses the network slice 34 through the terminal 31.
In event 303, PCF entity 33 generates a traffic detection policy according to the slice selection policy and issues it to SMF entity 3401 in network slice 34. For example, the PCF entity 33 may put all traffic that should not be carried in the network slice 34 in a traffic detection policy.
At event 304, SMF entity 3401 forwards the traffic detection policy to UPF entity 3402.
In event 305, the UPF entity 3402 installs the received service detection policy and performs deep packet inspection on the service carried by the network slice 34 according to the service detection policy.
In event 306, the UPF entity detects a service in the service detection policy, and reports the service detection information to SMF entity 3401, where the service detection information includes information of the service in the service detection policy detected by the UPF entity.
At event 307, SMF entity 3401 forwards the traffic detection information to PCF entity 33.
In event 308, the PCF entity 33 generates slice reselection information based on the received traffic detection information and the pre-configured slice selection policy.
In event 309, the PCF entity 33 sends the slice reselection information to the AMF entity 32.
In event 310, the AMF entity 32 forwards the slice reselection information to the terminal 31.
In event 311, the terminal 31 may update its own stored slice selection policy according to the received slice reselection information. The event 311 is an optional event, and the terminal 31 may directly execute the event 312.
In event 312, the terminal 31 accesses the network slice 35 according to the slice reselection information and carries the relevant traffic in the slice reselection information on the network slice 35.
In the above embodiment, the access network slice of the service can be dynamically adjusted in real time according to the slice selection policy issued by the PCF entity, so that the selection of the network slice can adapt to a complex and changeable network environment, and the network slice accessed by the service can meet the service requirement.
Fig. 4 illustrates a block diagram of some embodiments of a network access device of the present disclosure.
As shown in fig. 4, the network access device 4 includes a processor 41 and a transmitter 42.
The processor 41 allocates a target network slice to the unmatched service reported by the UPF entity according to the slice selection policy. For example, processor 41 configures the slice selection policy according to the traffic demand uploaded by the user through the NEF entity. The slice selection policy includes an identifier or quintuple information of the service and an identifier of a network slice corresponding to the service.
The transmitter 42 issues the slice selection policy configured according to the service requirement to the UPF entity in the network slice, so that the UPF entity detects whether the network slice carries an unmatched service.
The transmitter 42 is further configured to send slice reselection information to the terminals corresponding to the unmatched services, so that the terminals access the unmatched services to the target network slice. The slice reselection information comprises an identifier of unmatched service or quintuple information and an identifier of a target network slice.
In some embodiments, processor 41 generates a traffic detection policy according to the slice selection policy. The traffic detection policy includes an identification of traffic that cannot be carried in the network slice. The transmitter 42 issues a service detection policy to the UPF entity, so that the UPF entity detects whether the network slice carries unmatched services according to the service detection policy.
Fig. 5 shows a block diagram of further embodiments of the network access device of the present disclosure.
As shown in fig. 5, the network access apparatus 5 of this embodiment includes: a memory 51 and a processor 52 coupled to the memory 51, the processor 52 being configured to perform one or more steps of the network access method in any one of the embodiments of the present disclosure based on instructions stored in the memory 51.
The memory 51 may include, for example, a system memory, a fixed nonvolatile storage medium, and the like. The system memory stores, for example, an operating system, an application program, a Boot Loader (Boot Loader), a database, and other programs.
Fig. 6 illustrates a block diagram of still further embodiments of the network access device of the present disclosure.
As shown in fig. 6, the network access device 6 of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610, the processor 620 being configured to perform the network access method of any of the foregoing embodiments based on instructions stored in the memory 610.
The memory 610 may include, for example, system memory, fixed non-volatile storage media, and the like. The system memory stores, for example, an operating system, an application program, a Boot Loader (Boot Loader), and other programs.
Network access device 6 may also include input-output interface 630, network interface 640, storage interface 650, and the like. These interfaces 630, 640, 650 and the connections between the memory 610 and the processor 620 may be through a bus 660, for example. The input/output interface 630 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 640 provides a connection interface for various networking devices. The storage interface 640 provides a connection interface for external storage devices such as an SD card and a usb disk.
In the above embodiment, the access network slice of the service can be dynamically adjusted in real time according to the slice selection policy issued by the PCF entity, so that the selection of the network slice can adapt to a complex and changeable network environment, and the network slice accessed by the service can meet the service requirement.
Fig. 7 illustrates a block diagram of some embodiments of a network access system of the present disclosure.
As shown in fig. 7, the network access system 7 includes a PCF entity 71, a UPF entity 72, and a midterminal 73.
The PCF entity 71 is adapted to perform the network access method in any of the embodiments described above. The UPF entity 72 is configured to detect whether the network slice carries an unmatched service, and report the unmatched service to the PCF entity 71. The terminal 73 is used for unmatched traffic to access the target network slice.
In the above embodiment, the access network slice of the service can be dynamically adjusted in real time according to the slice selection policy issued by the PCF entity, so that the selection of the network slice can adapt to a complex and changeable network environment, and the network slice accessed by the service can meet the service requirement.
Fig. 8 shows a flow diagram of further embodiments of the network access method of the present disclosure.
As shown in fig. 8, the method includes: step 810, issuing a slice selection strategy; step 820, detecting whether unmatched services are carried; step 830, reporting unmatched service; step 840, continue processing the service; step 850, reallocating the target network slices; step 860, issuing slice reselection information; and step 870, accessing the target network slice.
In step 810, the PCF entity issues the slice selection policy configured according to the service requirement to the UPF entity in the network slice;
in step 820, the UPF entity detects whether the network slice carries unmatched traffic. If so, perform step 830; if not, step 840 is performed.
In step 830, the UPF entity reports the unmatched service to the PCF entity.
In step 840, each network slice continues to process the traffic carried by each.
In step 850, the PCF entity reallocates the target network slice for the unmatched traffic according to the slice selection policy.
In step 860, the PCF entity issues slice reselection information to the terminal corresponding to the unmatched service, where the slice reselection information includes the identifier of the target network slice and the identifier or quintuple information of the unmatched service.
In step 870, the terminal accesses the unmatched traffic to the target network slice.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
So far, a network access method, a network access apparatus, a network access system, and a computer-readable storage medium according to the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
The method and system of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (13)

1. A network access method, comprising:
a policy control function PCF entity issues a slice selection policy configured according to service requirements to a user plane function UPF entity in a network slice so that the UPF entity detects whether the network slice carries unmatched services;
reallocating target network slices for the unmatched services reported by the UPF entity according to the slice selection strategy;
and sending slice reselection information to a terminal corresponding to the unmatched service so that the terminal can access the unmatched service to the target network slice, wherein the slice reselection information comprises an identifier of the target network slice and an identifier or quintuple information of the unmatched service.
2. The network access method of claim 1, wherein
And the PCF entity configures the slice selection strategy according to the service requirement uploaded by the user through the NEF entity, wherein the slice selection strategy comprises service identification or quintuple information and network slice identification corresponding to the service.
3. The network access method of claim 1, wherein
The PCF entity generates a service detection strategy according to the slice selection strategy, wherein the service detection strategy comprises an identifier of a service which is not matched with the network slice;
and issuing the service detection strategy to the UPF entity so that the UPF entity can detect whether the unmatched service is carried in the network slice or not according to the service detection strategy.
4. Network access method according to any of claims 1-3, wherein
And the unmatched service is detected by the UPF entity by using a deep packet inspection method.
5. Network access method according to any of claims 1-3, wherein
And the unmatched service is reported to the PCF entity by the UPF entity through a Session Management Function (SMF) entity.
6. Network access method according to any of claims 1-3, wherein
And the PCF entity sends the slice reselection information to the terminal through an access and mobility management function AMF entity.
7. A network access device, comprising:
the processor is used for distributing target network slices for unmatched services reported by the UPF entity according to the slice selection strategy;
a transmitter for
The slice selection strategy configured according to the service requirement is issued to the UPF entity in the network slice so that the UPF entity can detect whether the unmatched service is carried in the network slice,
and sending slice reselection information to a terminal corresponding to the unmatched service so that the terminal can access the unmatched service to the target network slice, wherein the slice reselection information comprises an identifier or quintuple information of the unmatched service and an identifier of the target network slice.
8. The network access device of claim 7, wherein
The processor configures the slice selection strategy according to service requirements uploaded by a user through a network capability openness function (NEF) entity, wherein the slice selection strategy comprises service identification or quintuple information and network slice identification corresponding to the service.
9. The network access device of claim 7, wherein
The processor generates a service detection strategy according to the slice selection strategy, wherein the service detection strategy comprises an identifier of a service which is not matched with the network slice;
and the sender issues the service detection strategy to the UPF entity so that the UPF entity can detect whether the unmatched service is carried in the network slice or not according to the service detection strategy.
10. A network access device, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform one or more steps of the network access method of any of claims 1-6 based on instructions stored in the memory device.
11. A network access system, comprising:
a policy control function, PCF, entity for performing the network access method of any of claims 1-6;
the user plane function UPF entity is used for detecting whether the network slice bears unmatched services or not and reporting the unmatched services to the PCF entity;
and the terminal is used for accessing the unmatched service into the target network slice.
12. A network access method, comprising:
the policy control function PCF entity issues a slice selection policy configured according to the service requirement to a user plane function UPF entity in a network slice;
the UPF entity detects whether the network slice bears unmatched services or not;
under the condition that the network slice bears unmatched services, the UPF entity reports the unmatched services to the PCF entity;
the PCF entity redistributes a target network slice for the unmatched service according to the slice selection strategy;
the PCF entity sends slice reselection information to a terminal corresponding to the unmatched service, wherein the slice reselection information comprises an identifier of the target network slice and an identifier or quintuple information of the unmatched service;
and the terminal accesses the unmatched service to the target network slice.
13. A computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs one or more steps of the network access method of any of claims 1-6.
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