CN114302464B

CN114302464B - QoS mapping method and device, storage medium and electronic equipment

Info

Publication number: CN114302464B
Application number: CN202111642843.8A
Authority: CN
Inventors: 曹亚平; 孙颖; 郑洁莹; 王飞飞; 张会肖
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2023-11-07
Anticipated expiration: 2041-12-29
Also published as: CN114302464A; WO2023124043A1

Abstract

The disclosure provides a QoS mapping method, a device, a storage medium and electronic equipment, relates to the technical field of communication, and aims to solve the problem of how to determine QoS parameters by 5G business fallback 4G in the related technology. The related QoS mapping method comprises the following steps: the AMF of the first core network and the MME of the second core network interact based on the fallback information of the target terminal, wherein the fallback information comprises session information of the target terminal; the SMF of the first core network receives the fallback information sent by the MME; the SMF obtains the user information of the target terminal according to the session information, and inquires a target QoS mapping strategy after the target terminal is switched to the target network from a pre-stored QoS mapping strategy according to the user information; and the SMF issues a target QoS mapping strategy to the target terminal. According to the embodiment of the disclosure, the QoS parameters matched with the target network can be effectively obtained after the target terminal is switched to the target network, so that the QoS characteristics of the target terminal under different networks are satisfied.

Description

QoS mapping method and device, storage medium and electronic equipment

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to a QoS mapping method, a QoS mapping device, a storage medium, and an electronic device.

Background

At present, with the continuous maturity of 5G (5 th Generation Mobile Communication Technology, fifth generation mobile communication technology) technology, application effects of the technology on various industries are increasingly obvious, and many vertical industries have been practically applied, such as police service industry, medical industry, traffic industry, court industry and the like. However, the current 5G base station cannot realize full coverage, so that the 5G service falls back to 4G is a necessary requirement, especially for some applications with strong mobility, the situation of moving from the 5G coverage area to the 4G (the 4th Generation Mobile Communication Technology, fourth generation mobile communication technology) coverage area is as good as everything. Since some of the characteristics of large bandwidth, low latency, etc. defined by 5G are mainly represented by QoS (Quality of Service ) characteristics, mainly represented by 5QI (quality of service identifier) defined by 5G and a corresponding set of characteristics, and the number of QCIs (QoS Class Identifier ) defined in the 4G QoS model and the characteristics thereof are different from those of 5G, qoS mapping after 5G traffic falls back to 4G is a problem that must be solved. The current solutions to the problem by different manufacturers are different, which may cause abnormal problems, and even some manufacturers do not have solutions to the problem, so that the 5G service cannot be normally used after falling back to 4G, and the use and perception of customers are seriously affected.

Disclosure of Invention

The disclosure provides a QoS mapping method, a QoS mapping device, a storage medium, and an electronic device, which at least overcome the problem of how to determine QoS parameters by 5G service fallback 4G in the related art to a certain extent.

According to a first aspect of the present disclosure, there is provided a QoS mapping method, comprising: the method comprises the steps that an access and mobility management function AMF of a first core network interacts with a mobility management entity MME of a second core network based on fallback information of a target terminal, wherein the fallback information comprises session information of the target terminal; the session management function SMF of the first core network receives the fallback information sent by the MME; the SMF obtains the user information of the target terminal according to the session information, and inquires a target QoS mapping strategy after the target terminal is switched to the target network from a pre-stored QoS mapping strategy according to the user information; and the SMF issues the target QoS mapping strategy to the target terminal.

Optionally, the interaction between the access and mobility management function AMF of the first core network and the mobility management entity MME of the second core network based on fallback information of the target terminal includes: if the target terminal is in a connection state, the AMF sends a fallback notification of the target terminal to the MME, wherein the fallback notification comprises the fallback information; the AMF receives a fallback response message sent by the MME; if the target terminal is in an idle state, the AMF receives a fallback request of the target terminal sent by the MME, wherein the fallback request comprises the fallback information; the AMF sends a fallback response message back to the MME.

Optionally, the fallback information at least includes one of the following information: the SMF information of the connection, the context information of the user, and the bearer information.

Optionally, the user information includes: a data network name DNN, an international mobile subscriber identity IMSI, and a quality of service identity.

Optionally, the pre-stored QoS mapping policy includes a correspondence between each QoS parameter before the terminal performs network switching and each QoS parameter after the terminal performs network switching.

Optionally, the QoS parameters include at least one of: quality of service identification, address resolution protocol ARP, preemption attributes, preempted attributes, and upstream and downstream bit rate information.

Optionally, the pre-stored QoS mapping policy is classified according to the service type.

Optionally, the service types include: the bit rate GBR type is guaranteed and the bit rate Non-GBR type is not guaranteed.

According to a second aspect of the present disclosure, there is provided a QoS mapping apparatus, comprising: the mobile management system comprises an access and mobility management function (AMF) of a first core network and a Session Management Function (SMF), wherein the AMF is used for interaction between the access and mobility management function (AMF) of the first core network and a Mobility Management Entity (MME) of a second core network based on fallback information of a target terminal, and the fallback information comprises session information of the target terminal; the SMF is used for receiving the fallback information sent by the MME, obtaining the user information of the target terminal according to the session information, inquiring the target QoS mapping strategy after the target terminal is switched to the target network from the pre-stored QoS mapping strategy according to the user information, and sending the target QoS mapping strategy to the target terminal by the SMF.

Optionally, the QoS mapping device further includes: and the QoS mapping module is used for storing the QoS mapping strategy and transmitting the QoS mapping strategy to the SMF according to the user information provided by the SMF.

According to a third aspect of the present disclosure, there is provided an electronic device comprising: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform any one of the QoS mapping methods provided by the embodiments of the present disclosure via execution of the executable instructions.

According to a fourth aspect 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 any one of the QoS mapping methods provided by the embodiments of the present disclosure.

According to the QoS mapping method, the device, the storage medium and the electronic equipment of one or more embodiments of the present disclosure, when a target terminal needs to be switched from a current network to a target network, interaction is performed between an AMF of a first core network and an MME of a second core network based on fallback information of the target terminal, so that the MME of the second core network reports the fallback information of the target terminal to an SMF of the first core network, and therefore the SMF of the first core network determines a target QoS mapping strategy after the target terminal is switched to the target network according to a pre-stored QoS mapping strategy, and sends the target QoS mapping strategy to the target terminal, so that QoS parameters matched with the target network can be effectively obtained after the target terminal is switched to the target network, and QoS characteristics of the target terminal under different networks are satisfied.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 is a flow diagram of a QoS mapping method in accordance with one or more embodiments of the present disclosure;

fig. 2 is an overall control plane signaling flow for initial registration and session establishment of a terminal in a 5G SA environment in accordance with one or more embodiments of the present disclosure;

FIG. 3 is a schematic diagram of a communication architecture in accordance with one or more embodiments of the present disclosure;

fig. 4 is a flow diagram of 5G traffic fallback 4G in accordance with one or more embodiments of the present disclosure;

fig. 5 is a schematic diagram of a QoS mapping apparatus according to one or more embodiments of the present disclosure; and

fig. 6 is a schematic structural diagram of an electronic device according to one or more embodiments of the present disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.

Fig. 1 is a flow diagram of a QoS mapping method, as shown in fig. 1, in accordance with one or more embodiments of the present disclosure, the method comprising:

step S102: the AMF (Access and Mobility Management Function ) of the first core network interacts with the MME (Mobility Management Entity ) of the second core network based on fallback information of a target terminal, wherein the fallback information comprises session information of the target terminal;

optionally, the optional MME may learn that the target terminal is about to be switched from the current network to the target network according to the location change condition of the target terminal represented by the session information of the target terminal.

Step S104: -the SMF (Session Management Function ) of the first core network receiving the fallback information sent by the MME;

optionally, after acquiring the fallback information of the target terminal, the MME may report the fallback information to the SMF of the first core network after determining that the target terminal is about to be switched from the current network to the target network according to the fallback information.

Step S106: the SMF obtains the user information of the target terminal according to the session message, and inquires the target QoS mapping strategy after the target terminal is switched to the target network from the pre-stored QoS mapping strategy according to the user information;

optionally, the QoS mapping policy may be pre-stored in the first core network, for example, a QoS mapping module may be added in the first core network, where the QoS mapping requirement data of the user is signed, so as to issue the QoS mapping policy to the SMF based on the QoS query request (also called mapping information) of the SMF. If the QoS mapping module obtains the query request of the SMF, a database query may be performed to query the target QoS mapping policy of the user of the target terminal under the target network, and the target QoS mapping policy is issued to the SMF of the first core network. The QoS mapping policy includes, but is not limited to, a correspondence between QoS parameters before and after network switching by the terminal. Under the 5G service fallback 4G scene, the requirement that the high QoS characteristic falls back to the 4G under the 5G still requires the high QoS characteristic can be met, and the requirement that the high QoS characteristic falls back to the 4G under the 5G only requires the continuous connection but no longer requires the high QoS characteristic can also be met.

Optionally, the user information may include a user identifier, and the QoS mapping policy corresponding to the specified user under the target network may be queried in the pre-stored QoS mapping policy according to the user identifier. Therefore, different QoS mapping strategies can be mapped for different users during network switching, and the network switching requirements of user diversification are met.

Step S108: and the SMF issues the target QoS mapping strategy to the target terminal.

Optionally, the SMF of the first core network may send the target QoS mapping policy to the target terminal through the MME of the second core network and the base station of the second core network, so that the target terminal may perform traffic flow transmission based on the received target QoS mapping policy.

According to the QoS mapping method, when the target terminal is required to be switched to the target network from the current network, the AMF of the first core network and the MME of the second core network interact based on the fallback information of the target terminal, so that the MME of the second core network reports the fallback information of the target terminal to the SMF of the first core network, the SMF of the first core network determines a target QoS mapping strategy after the target terminal is switched to the target network according to a pre-stored QoS mapping strategy, and the target QoS mapping strategy is sent to the target terminal, so that QoS parameters matched with the target network can be effectively obtained after the target terminal is switched to the target network, and the QoS characteristics of the target terminal under different networks are met.

In addition, the QoS mapping method of the embodiment of the present disclosure can mask the abnormal problems caused by different QoS mapping policies of different manufacturers, and can solve the fallback problem caused by the differentiated requirements of users in the industry of 2B (also called B2B, which means that both the supply and demand parties for performing e-commerce transactions are merchants (or enterprises or companies)), so as to satisfy the normal fallback requirements of users in a connection state and an idle state.

In one or more embodiments of the present disclosure, the interaction between the access and mobility management function AMF of the first core network and the mobility management entity MME of the second core network based on fallback information of the target terminal may include:

if the target terminal is in a connection state, the AMF sends a fallback notification of the target terminal to the MME, wherein the fallback notification comprises the fallback information;

the AMF receives a fallback response message sent by the MME;

if the target terminal is in an idle state, the AMF receives a fallback request of the target terminal sent by the MME, wherein the fallback request comprises the fallback information;

the AMF sends a fallback response message back to the MME.

In an exemplary implementation scenario of the present disclosure, a target terminal is moved from a 5G coverage area to a 4G coverage area, and needs to fall back from a 5G service to a 4G, so that, based on the QoS mapping method of the embodiment of the present disclosure, a terminal in a connection state after the 5G service falls back to the 4G may not fall off, and a terminal in an idle state may be normally accessed, so that the terminal may still be normally used within an acceptable QoS characteristic range, and user experience is improved.

In one or more embodiments of the present disclosure, the fallback information may include at least one of the following information:

the SMF information of the connection, the context information of the user, and the bearer information.

Optionally, the AMF or MME may determine that the terminal needs to be switched from the current network to the target network according to the change of the location of the terminal in the user context information. And secondly, after the SMF receives the fallback information, the SMF can acquire the current session ID according to the session information in the fallback information, so that the user information can be determined based on the session ID, and the target QoS mapping strategy of the target terminal can be queried according to the user information.

In one or more embodiments of the present disclosure, the user information may include:

DNN (Data Net Name), IMSI (International Mobile Subscriber Identity ), quality of service identity.

For example, in the case that the target terminal falls back by the 5G service by 4G, the quality of service identifier in the user information may be 5QI.

Optionally, the user information may further include: uplink and downlink bit rate information, which may include UL (uplink) -GFBR (Guaranteed Flow Bit Rate, guaranteed traffic bit rate), DL (downlink) -GFBR, UL-MFBR (Maximum Flow Bit Rate, maximum stream bit rate), DL-MFBR, DL-AMBR (Aggregated Maximum Bit Rate, combined maximum bit rate), and UL-AMBR.

Optionally, the target QoS mapping policy corresponding to the designated user and the designated service under the target network can be queried based on the information, so that different QoS mapping policies can be mapped for different users and different services during network switching, and the network switching requirement of user diversification can be further met.

In one or more embodiments of the present disclosure, the pre-stored QoS mapping policy may include a correspondence between QoS parameters before the terminal performs the network handover and QoS parameters after the network handover, where the QoS parameters include at least one of the following:

quality of service identity, ARP (Address Resolution Protocol ), preemption attribute, preempted attribute, and upstream and downstream bit rate information.

For example, in the case that the target terminal falls back by the 5G service by 4G, the quality of service identifier corresponding to the 5G in the QoS mapping policy may be 5qi, and the quality of service identifier corresponding to the 4G may be QCI.

For example, the network handover performed by the target terminal takes the 5G service fallback 4G as an example, and the following table 1 shows a QoS mapping policy template of the 5G service fallback 4G, where QoS parameters corresponding to the 5G and the 4G may be filled in according to the information of the first column to obtain a QoS mapping policy.

TABLE 1

Based on the QoS mapping policy template shown in the table 1, when creating the QoS mapping policy, a mapping relation between QoS parameters corresponding to 5G and QoS parameters corresponding to 4G can be built one by one according to the field of the first column in the table 1, so as to obtain the QoS mapping policy of 5G service fallback 4G. Exemplary, the QoS mapping policy for 5G traffic fallback 4G may be as shown in table 2 below.

TABLE 2

In one or more embodiments of the present disclosure, the pre-stored QoS mapping policies may be classified according to service types, and illustratively, when a target terminal is switched from a 5G service to a 4G service, a mechanism and a manner of mapping to QoS characteristics of the 4G may be distinguished according to service types of target terminal users, so that a service-level QoS mapping function may be implemented, and different QoS mapping policies may be set for different industries, different users, and different services, so as to effectively meet diversified requirements of a 5G-enabled vertical industry.

In one or more embodiments of the present disclosure, the service types may include: GBR (Guaranteed Bit Rate ) type and Non-GBR type. Still taking table 2 as an example, the service type corresponding to 5G is GBR, and the service type corresponding to the mapped service type after 4G is Non-GBR.

Illustratively, the business aspect traffic types may include: 5G dedicated line, directional traffic, MEC, data splitting, etc. While from a technical point of view, the traffic types may include: GBR type and Non-GBR type of bit rate are not guaranteed. Therefore, in one or more embodiments of the present disclosure, the purpose of differentiating QoS mapping policies according to traffic types may be achieved by dividing traffic types from a technical level.

In order to facilitate understanding of the QoS mapping method according to one or more embodiments of the present disclosure, an overall control plane signaling flow of initial registration and session establishment of a terminal in a 5G SA (stand alone networking) environment is briefly described below with reference to fig. 2, where the SMF is responsible for issuing QoS policy information to the terminal and the UPF (User Port Function ) sides (it should be noted that the QoS policy information is different from the QoS mapping policy pre-stored in the present disclosure), and based on this, the QoS mapping method according to one or more embodiments of the present disclosure is improved on the bulk flow shown in fig. 2. As shown in fig. 2, the process includes:

step S201: the UE (User Equipment) sends a registration request to the gNB (5G base station);

step S202: gNB selects AMF by default or according to NSSAI (Network Slice Selection Assistance Information );

step S203: the AMF selects AUSF (Authentication Service Function authentication service function) based on the IMSI of the user, and performs user access authentication;

step S204: AMF obtains user signing strategy (including slice and DNN) to check NSSAI is legal;

step S205: the AMF requests the PCF (Policy Control Function ) for access policies;

step S206: the UE sends a session establishment request (carrying DNN and slice information) to the gNB;

step S207: AMF selects SMF;

step S208: the SMF acquires session parameter information of subscription from UDM (Unified Data Management, unified data management function) or AUSF;

step S209: the SMF selects UPF to perform session authorization and authentication;

step S210: the SMF selects PCF to acquire PCC (Policy Control and Charging ) policy;

step S211: the SMF transmits session information and policy information to the UPF (User Plane Function );

step S212: SMF sends a session establishment acceptance response to AMF and issues QoS mapping strategy information;

step S213: the AMF informs the base station gNB to establish a radio bearer;

step S214: gNB establishes radio bearers;

step S215: the SMF transmits the wirelessly assigned tunnel information to the UPF.

Other parts referred to in fig. 2 are NRF (Network Repository Function, network warehousing function), H-NRF (Home-NF Repository Function, global NRF), DN (Data Network).

The steps S201 to S205 are initial registration procedures of the UE, and the steps S206 to S215 are session establishment procedures. The QoS mapping method according to one or more embodiments of the present disclosure may be performed when the UE is in a connected state after the session is established, or may be performed when the UE is in an idle state.

The initial registration procedure and session establishment procedure of the UE are briefly described above with reference to fig. 2, and on this basis, the procedure of the UE falling back to 4G from the 5G service is exemplarily described below with reference to fig. 3 and 4.

As shown in fig. 3, the 5G core network relates to AMF, SMF … UPF network elements, the 4G core network relates to MME network elements, LDNS (Local Domain Name System ), and the 5G base stations and the 4G base stations are connected to the 5G core network and the 4G core network through IP RANs (Radio Access Network, radio access networks), respectively. The newly added QoS mapping module is disposed in the 5G core network, and fig. 3 shows the entity interaction relationship between the newly added QoS mapping module and other standard network elements. Based on the entity interaction relationship between the QoS mapping module shown in fig. 3 and other standard network elements, as shown in fig. 4, the flow of the UE falling back to 4G from the 5G service may include the following steps:

step S401: the UE initiates an activation request to the SMF network element through the base station gNB and the AMF to request to establish a session;

step S402: the SMF sends an activation request to the UPF request to allocate an IP address for the UE;

step S403: UPF issues user IP address for UE, UE activation is successful, user plane channel between base station and UPF is established successfully;

if the UE is in the connected state, the following steps S404 and S405 are executed;

step S404: under the condition of a connection state, if the UE moves from a 5G coverage area to a 4G coverage area, a fallback notification of the 4G MME network element UE is notified by an AMF network element under 5G SA, and context information of a user, connected SMF network element information and bearing related information are issued to the MME in the fallback notification;

step S405: the MME sends a fallback response message back to the AMF;

if the UE is in idle state, the following steps S406 and S407 are performed;

step S406: the MME sends a fallback request message to the AMF, where the fallback request message may carry context information of the user and information such as SMF.

Step S407: the AMF sends a fallback response message to the MME, wherein the fallback response message can carry SMF and other information.

Step S408: the MME receives a fall-back notification of the UE and reports the fall-back notification to the SMF;

step S409: after receiving the fall-back notification of the UE, the SMF sends a 4G/5G QoS mapping request to the QoS mapping module;

after receiving the fall-back notification of the UE, the SMF may carry information about the user, such as DNN, IMSI, 5QI, bit rate, etc., and query the QoS mapping module for QoS parameters of the user after mapping to 4G, such as QCI, ARP, and uplink and downlink bit rate, etc.

Step S410: after receiving the QoS mapping request, the QoS mapping module acquires a new QoS mapping strategy of the user and then sends the new QoS mapping strategy to the SMF, wherein the new QoS mapping strategy can comprise information such as QCI mapped by 5QI, mapped ARP, uplink and downlink bit rate and the like;

after receiving the mapping request of the SMF, the QoS mapping module performs database query to query the QoS parameters of the current user, such as QCI, ARP, and uplink and downlink bit rates.

Step S411: the SMF issues the acquired new QoS mapping strategy (which is an example of the target QoS mapping strategy) to the UE through the AMF and the eNB (4G base station);

step S412: the UE carries the new QoS mapping strategy such as QCI and the like to send the service message.

Fig. 5 is a schematic structural diagram of a QoS mapping apparatus according to one or more embodiments of the present disclosure, and as shown in fig. 5, the apparatus 510 includes:

the AMF 512 and the SMF 513 of the first core network are configured to interact with a mobility management entity MME of the second core network based on fallback information of a target terminal, where the fallback information includes session information of the target terminal, and the fallback information includes session information of the target terminal;

the SMF is used for receiving the fallback information sent by the MME, obtaining the user information of the target terminal according to the session information, inquiring the target QoS mapping strategy after the target terminal is switched to the target network from the pre-stored QoS mapping strategy according to the user information, and sending the target QoS mapping strategy to the target terminal by the SMF.

In one or more embodiments of the present disclosure, the AMF is particularly useful for:

the AMF receives a fallback response message sent by the MME;

the AMF sends a fallback response message back to the MME.

Wherein, the fallback information at least comprises one of the following information: the SMF information of the connection, the context information of the user, and the bearer information.

In one or more embodiments of the present disclosure, the user information may include: a data network name DNN, an international mobile subscriber identity IMSI, and a quality of service identity.

In one or more embodiments of the present disclosure, the pre-stored QoS mapping policy includes a correspondence between QoS parameters before the terminal performs the network handover and QoS parameters after the terminal performs the network handover.

In one or more embodiments of the present disclosure, the QoS parameters include at least one of: quality of service identification, address resolution protocol ARP, preemption attributes, preempted attributes, and upstream and downstream bit rate information.

In one or more embodiments of the present disclosure, the pre-stored QoS mapping policies are classified by traffic type.

In one or more embodiments of the present disclosure, the service types include: the bit rate GBR type is guaranteed and the bit rate Non-GBR type is not guaranteed.

In one or more embodiments of the present disclosure, the QoS mapping apparatus may further include: the QoS mapping module is used for storing QoS mapping strategies, the QoS mapping strategies are divided according to service types, the QoS mapping strategies comprise corresponding relations between all QoS parameters before network switching and all QoS parameters after network switching of a terminal, and the QoS parameters at least comprise one of the following information: quality of service identification, address resolution protocol ARP, preemption attributes, preempted attributes, and upstream and downstream bit rate information.

Alternatively, as described above, the QoS mapping module may be provided in the 5G core network, in particular, the module may be provided in a currently existing 5G network element, for example, in each 5G network element as shown in fig. 3, or may be separately provided in the 5G core network independent of the currently existing 5G network element, i.e. in the case shown in fig. 3.

One or more embodiments of the present disclosure also provide an electronic device including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to perform any one of the QoS mapping methods provided by the embodiments of the present disclosure via execution of the executable instructions.

One or more embodiments of the present disclosure also provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements any of the QoS mapping methods provided by the embodiments of the present disclosure.

An electronic device 600 according to this embodiment of the application is described below with reference to fig. 6. The electronic device 600 shown in fig. 6 is merely an example, and should not be construed as limiting the functionality and scope of use of embodiments of the present application.

As shown in fig. 6, the electronic device 600 is in the form of a general purpose computing device. Components of electronic device 600 may include, but are not limited to: the at least one processing unit 610, the at least one memory unit 620, and a bus 630 that connects the various system components, including the memory unit 620 and the processing unit 610.

Wherein the storage unit stores program code that is executable by the processing unit 610 such that the processing unit 610 performs steps according to various exemplary embodiments of the present application described in the above-described "exemplary methods" section of the present specification. For example, the processing unit 610 may perform S102 shown in fig. 1, where the access and mobility management function AMF of the first core network interacts with the mobility management entity MME of the second core network based on fallback information of the target terminal, where the fallback information includes session information of the target terminal; s104, the session management function SMF of the first core network receives the fallback information sent by the MME; s106, the SMF obtains the user information of the target terminal according to the session information, and queries a target QoS mapping strategy after the target terminal is switched to the target network from a pre-stored QoS mapping strategy according to the user information; step S108: and the SMF issues the target QoS mapping strategy to the target terminal.

The storage unit 620 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 6201 and/or cache memory unit 6202, and may further include Read Only Memory (ROM) 6203.

The storage unit 620 may also include a program/utility 6204 having a set (at least one) of program modules 6205, such program modules 6205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.

Bus 630 may be a local bus representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or using any of a variety of bus architectures.

The electronic device 600 may also communicate with one or more external devices 700 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 800, and/or any device (e.g., router, modem, etc.) that enables the electronic device 600 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 650. Also, electronic device 600 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 660. As shown, network adapter 660 communicates with other modules of electronic device 600 over bus 630. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 600, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.

In an exemplary embodiment of the present disclosure, a computer-readable storage medium having stored thereon a program product capable of implementing the method described above in the present specification is also provided. In some possible embodiments, the various aspects of the application may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the application as described in the "exemplary methods" section of this specification, when said program product is run on the terminal device.

A program product for implementing the above method according to an embodiment of the present application is described, which may employ a portable compact disc read-only memory (CD-ROM) and comprise program code and may be run on a terminal device, such as a personal computer. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).

It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.

Furthermore, although the steps of the methods in the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order or that all illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.

From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A QoS mapping method, comprising:

the network access and control function of the first core network and the mobility management function of the second core network interact based on the fallback information of the target terminal, wherein the fallback information comprises session information of the target terminal;

the session management function receives the fallback information sent by the mobility management function;

the session management function obtains user information of the target terminal according to the session information, and queries a target QoS mapping strategy after the target terminal is switched to a target network from a pre-stored QoS mapping strategy according to the user information;

the session management function issues the target QoS mapping policy to the target terminal.

2. The method of claim 1, wherein the network access and control function of the first core network interacts with the mobility management function of the second core network based on fallback information of the target terminal, comprising:

if the target terminal is in a connection state, the network access and control function sends a fallback notification of the target terminal to the mobility management function, wherein the fallback notification comprises the fallback information;

the network access and control function receives a fallback response message sent by the mobility management function;

if the target terminal is in an idle state, the network access and control function receives a fallback request of the target terminal sent by the mobility management function, wherein the fallback request comprises the fallback information;

the network access and control function sends a fallback response message to the mobility management function.

3. The method of claim 1, wherein the fallback information comprises at least one of the following information:

session management function information of the connection, context information of the user, and bearer information.

4. The method of claim 1, wherein the user information comprises:

a data network name DNN, an international mobile subscriber identity IMSI, and a quality of service identity.

5. The method according to claim 1, wherein the pre-stored QoS mapping policy includes a correspondence between QoS parameters before network handover and QoS parameters after network handover.

6. The method of claim 1, wherein the QoS parameters include at least one of:

quality of service identification, address resolution protocol ARP, preemption attributes, preempted attributes, and upstream and downstream bit rate information.

7. The method of claim 1, wherein the pre-stored QoS mapping policies are classified by traffic type.

8. The method of claim 7, wherein the traffic type comprises:

the bit rate GBR type is guaranteed and the bit rate Non-GBR type is not guaranteed.

9. A QoS mapping apparatus, comprising:

the mobile terminal comprises a network access and control function and a session management function of a first core network, wherein the network access and control function is used for interacting with a mobility management function of a second core network based on fallback information of a target terminal, and the fallback information comprises session information of the target terminal;

the network access and control function is used for receiving the fallback information sent by the mobility management function, obtaining the user information of the target terminal according to the session information, inquiring the target QoS mapping strategy after the target terminal is switched to the target network from the pre-stored QoS mapping strategy according to the user information, and the session management function issues the target QoS mapping strategy to the target terminal.

10. The apparatus of claim 9, wherein the QoS mapping means further comprises:

and the QoS mapping module is used for storing the QoS mapping strategy and transmitting the QoS mapping strategy to the session management function according to the user information provided by the session management function.

11. An electronic device, comprising:

a processor; and

a memory for storing executable instructions of the processor;

wherein the processor is configured to perform the QoS mapping method of any of claims 1-8 via execution of the executable instructions.

12. A computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the QoS mapping method of any of claims 1-8.