CN110022581B - A method, device, network unit and terminal supporting network bearer control - Google Patents

Abstract

The invention provides a method, a device, a network unit and a terminal for supporting network bearer control, and belongs to the technical field of communication. The method for supporting network bearer control is applied to a first network unit and comprises the following steps: acquiring carried information; determining the priority information of the bearer according to the acquired bearer information; the priority information is used for bearer control, and the bearer control comprises at least one of the following: selecting an activated bearer, selecting a bearer requesting activation, selecting a switched bearer, whether an activated bearer is requested, whether a switched bearer, selecting a released bearer, whether the bearers are released. The technical scheme of the invention supports the interoperation between the extended bearer network and the non-extended bearer network, and better meets the increasing business demands.

Description

A method, device, network unit and terminal supporting network bearer control

technical field

The present invention relates to the field of communication technology, in particular to a method, device, network unit and terminal supporting network bearer control.

Background technique

At present, the maximum number of bearers (EPS Bearers) established for UE (User Equipment, user terminal) supported in 3G and 4G networks is 8. Due to the increase of services, the demand for the number of bearers of the UE is increasing. The number of bearers supported in 5G is very likely to be more than 8. In order to support the interoperability between the 4G network and the 5G network, it is necessary to expand the number of bearers supported in the 4G network.

Currently, it is unclear how to support interoperability between extended bearer networks and those that do not.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method, device, network unit, and terminal that support network bearer control, support interoperability between extended bearer networks and networks that do not support extended bearer networks, and better meet increasing business needs .

In order to solve the above technical problems, embodiments of the present invention provide technical solutions as follows:

In a first aspect, an embodiment of the present invention provides a method for supporting network bearer control, which is applied to a first network unit, including:

Obtain the carried information;

Determine the priority information of the bearer according to the acquired bearer information.

In a second aspect, an embodiment of the present invention provides a method for supporting network bearer control, which is applied to a second network element or terminal, including:

Obtain the priority information of the bearer;

Bearer control is performed according to the priority information, and the bearer control includes at least one of the following: selecting a bearer for activation, selecting a bearer for requesting activation, selecting a bearer for switching, whether to activate the bearer, or whether to request the activation of the bearer , whether to switch the bearer, choose to release the bearer, and whether to release the bearer.

In a third aspect, an embodiment of the present invention provides an apparatus for supporting network bearer control, which is applied to a first network unit, including:

The first obtaining module is used to obtain the bearer information;

The first processing module is configured to determine the priority information of the bearer according to the acquired bearer information.

In a fourth aspect, an embodiment of the present invention provides a device for supporting network bearer control, which is applied to a second network unit or terminal, including:

The second obtaining module is used to obtain the priority information of the bearer;

The second processing module is configured to perform bearer control according to the priority information, where the bearer control includes at least one of the following: a bearer selected for activation, a bearer selected for activation, a bearer selected for switching, the bearer activated or not, Whether to request activation of the bearer, whether to switch the bearer, select to release the bearer, and whether to release the bearer.

In the fifth aspect, the embodiment of the present invention provides a first network unit, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, when the computer program is executed by the processor The steps of the method for supporting network bearer control as described above are implemented.

In a sixth aspect, an embodiment of the present invention provides a second network unit, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, when the computer program is executed by the processor The steps of the method for supporting network bearer control as described above are implemented.

In the seventh aspect, an embodiment of the present invention provides a terminal, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, and the computer program is executed by the processor to achieve the above-mentioned Steps in the method for supporting network bearer control described above.

In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method as described above is implemented A step of.

Embodiments of the present invention have the following beneficial effects:

In the above solution, the first network unit obtains the bearer information, determines the priority information of the bearer according to the obtained bearer information, and the priority information is used for bearer control. The second network unit or terminal obtains the priority information of the bearer, and controls the bearer according to the priority information. Through the technical solution of the present invention, it is possible to support the interoperability between the extended bearer network and the non-extended bearer network, and better meet the increasing service requirements.

Description of drawings

FIG. 1 is a schematic flowchart of a method for supporting network bearer control applied to a first network element according to an embodiment of the present invention;

FIG. 2 is a schematic flowchart of a method for supporting network bearer control applied to a second network element or terminal according to an embodiment of the present invention;

3-7 are schematic diagrams of signaling interaction of a method for supporting network bearer control according to an embodiment of the present invention;

FIG. 8 is a structural block diagram of an apparatus for supporting network bearer control applied to a first network unit according to an embodiment of the present invention;

FIG. 9 is a structural block diagram of an apparatus for supporting network bearer control applied to a second network element or terminal according to an embodiment of the present invention;

FIG. 10 is a structural block diagram of a first network unit or a second network unit according to an embodiment of the present invention;

FIG. 11 is a structural block diagram of a terminal according to an embodiment of the present invention.

Detailed ways

In a network that does not support extended bearer (such as a 3G network or an existing 4G network), the legal value of the EPS Bearer ID (non-extended bearer ID) is any value from 5 to 15, that is, a total of 11 values, and the maximum can be The number of established bearers is 8.

But there are following problems in prior art:

Problem 1: When the UE needs to access a target network that does not support the extended bearer, for the bearer assigned the extended bearer identifier, the extended bearer identifier cannot be identified by the network that does not support the extended bearer, so it cannot be switched or activated. For a bearer allocated with a non-extended bearer identifier, the bearer identifier can be identified by a network that does not support the extended bearer. However, there are 11 non-extended bearer identifiers. If all of them are switched or activated, it will be regarded as an error by the target network that does not support the extended bearer.

Question 2: When the UE is in the connected state, the source radio access network node needs to switch the UE to a network that does not support extended bearer (such as 3G), and needs to prepare the contents of the Source To Target Container (source to target container), including up to 8 carried information. When the bearer identifiers of the UE's existing bearers include non-extended bearer identifiers and the number of non-extended bearer identifiers exceeds 8, the source radio access network node still lacks information to determine which bearer to select for handover.

Question 3: In a network that supports extended bearers (such as a 4G network), when the UE's existing bearer identifiers include non-extended bearer identifiers and the number of non-extended bearer identifiers exceeds 8. Subsequently, the UE enters the idle state and moves to a network that does not support extended bearers (such as a 3G network). When the UE requests to activate the bearer, the UE still lacks information to determine which bearer to activate.

In the 5G network, in order to support the interoperability to 4G, it is also necessary to assign bearer identifiers. Since UE switches from 5G to 4G network, it may continue to switch to 3G network or 4G network that does not support extended bearer, so it also faces similar problems. If the high-priority service established in 5G is assigned an extended bearer identifier, after switching to the 4G network, it cannot be switched to the 3G network subsequently.

In the present invention, the core network network unit may include at least one of the following: core network equipment, core network node, core network function, core network unit, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), serving gateway (serving GW, SGW), PDN gateway (PDN GateWay, PDN gateway), policy control function ( Policy Control Function, PCF), Policy and Charging Rules Function (PCRF), Serving GPRS Support Node (Serving GPRS Support Node, SGSN), Gateway GPRS Support Node (Gateway GPRS Support Node, GGSN) wireless access network equipment,

In the present invention, the radio access network unit may include at least one of the following: radio access network equipment, radio access network node, radio access network function, radio access network unit, 3GPP radio access network, non- 3GPP radio access network, centralized unit (Centralized Unit, CU), distributed unit (Distributed Unit, DU), base station, eNB, gNB, RNC, NodeB, non-3GPP interworking function (Non-3GPP InterWorking Function, N3IWF), An access control (Access Controller, AC) node, an access point (Access Point, AP) device, or a wireless local area network (Wireless Local Area Networks, WLAN) node.

The base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional NodeB) in LTE and 5G The base station (gNB) is not limited in the present invention, but for the convenience of description, the following embodiments take the gNB as an example for illustration.

In the present invention, the non-extended bearer identifier may refer to the legal value of the existing bearer identifier before extension, such as any value from 5 to 15. The extended bearer identifier may refer to legal values of the extended bearer identifier. For example, any value from 1 to 4 or greater than 15, there are 11 values in total.

In the present invention, the network that does not support the extended bearer may be a network element that supports the existing non-extended bearer identifier but does not support the non-extended bearer identifier. Such as 3G network (such as UTRAN), non-upgraded 4G network (EUTRAN, EPC, etc.).

In the present invention, the network supporting the extended bearer may support both the existing non-extended bearer identifier and the network element of the non-extended bearer identifier.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

An embodiment of the present invention provides a method for supporting network bearer control, which is applied to a first network unit, as shown in FIG. 1 , including:

Step 101: Obtain bearer information;

Step 102: Determine the priority information of the bearer according to the acquired bearer information.

The priority information may be used for bearer control, and the bearer control may include at least one of the following: select a bearer for activation, select a bearer for activation request, select a bearer for handover, activate a bearer, request for activation, whether The bearer to be switched, the bearer to be released, and whether to release the bearer.

In one embodiment, the bearer selected for activation, the bearer selected for activation request, the bearer selected for handover, and the bearer selected for release may generally refer to the bearer selected according to the priority information among several existing bearers of the terminal. bearer. In another implementation manner, whether to activate the bearer, whether to request activation of the bearer, whether to switch the bearer, and whether to release the bearer among the bearers may be operations of the bearer corresponding to the priority information.

In this embodiment, the first network unit may perform bearer control according to the determined priority information (the bearer control is as described above, and will not be repeated here). Alternatively, the first network unit may send the determined priority information of the bearer to the second network unit or the terminal, so that the second network unit or the terminal performs the bearer control (the bearer control is as described above, and will not be repeated here. ). Through the technical solution of the present invention, it is possible to support the interoperability between the extended bearer network and the non-extended bearer network, and better meet the increasing business requirements. Increasing business demands.

Further, before the step of determining the priority information of the bearer, the method may obtain the information of the bearer through at least one of the following:

receiving a bearer identifier allocation request of the bearer;

receiving the establishment request of the bearer;

receiving a packet data network PDN connection establishment request for the bearer;

A packet data unit PDU session establishment request for the bearer is received.

Further, the bearer information may include at least one of the following: bearer QoS information, bearer-mapped QoS flow information, bearer-mapped PDU session information, bearer service information, bearer identification information, bearer identification type Information, operator's strategy.

The bearer QoS information may include at least one of the following: bearer QCI, GBR bearer QoS parameters, and bearer ARP;

The information of the QoS flow of the bearer mapping may include at least one of the following: the identifier of the QoS flow, the QoS profile (context) of the bearer mapped QoS flow, the 5QI of the bearer mapped QoS flow, and the ARP of the bearer mapped QoS flow;

The information of the bearer mapping PDU session may include at least one of the following: the identifier of the bearer mapping PDU session, the slice identification information (such as S-NSSAI) of the bearer mapping session;

The service information carried includes at least one of the following: multimedia priority service, high priority access.

The identification type information of the bearer may include at least one of the following: whether it is an extended bearer identification, whether it is a non-extended bearer identification;

The bearer identification information includes at least one of the following: an extended bearer ID and a non-extended bearer ID.

In an implementation manner, the priority information of the bearer is the ARP of the bearer or the ARP of the QoS flow to which the bearer is mapped. When multiple QoS flows are mapped to a bearer, the ARP with the highest priority is selected as the ARP of the bearer.

In one implementation manner, it can be known from the bearer identifier whether the identifier type of the bearer is an extended bearer identifier or a non-extended bearer identifier. In another implementation manner, it may be known from the bearer identifier type information whether the bearer identifier type is an extended bearer identifier or a non-extended bearer identifier.

Further, the step of determining the priority information of the bearer may specifically include at least one of the following items: when the identification type information of the bearer is a non-extended bearer identification, determining the priority information of the bearer; when the When the identifier type information of the bearer is an extended bearer identifier, the priority information of the bearer may not be determined. It is easy to understand that the extended bearer identifier cannot be identified by a network that does not support the extended bearer. In one embodiment, the bearer whose extended bearer identifier is confirmed cannot be directly transferred to a target network that does not support the extended bearer. Therefore, these bearers may not need the priority information of the bearers. In contrast, the non-extended bearer identifier can be identified by a network that does not support the extended bearer. However, the maximum number of non-extended bearer identifiers (such as M) is greater than the maximum number of bearers that can be established in a network that does not support extended bearers (such as N). When the number of bearers with non-extended bearer identifiers of the terminal is greater than N, priority information of a bearer is needed to determine which bearer can be transferred to a target network that does not support extended bearers.

Further, the priority information is used to perform bearer control according to the priority information when the terminal moves into a target network that does not support extended bearer, and the bearer control includes at least one of the following: selecting an activated bearer, selecting a request for activation The bearer selected, the bearer selected for switching, the bearer activated or not, the bearer requested for activation or not, the bearer switched over, the bearer selected for release, and whether the bearer was released or not.

Further, the bearer may include one of the following: a default bearer for a packet data gateway (PDN) connection, a dedicated bearer for a PDN connection, an evolved packet system (EPS) bearer, a packet data protocol (PDP) context, a protocol data unit (PDU ) session-mapped bearer, data radio bearer (DRB), and logical channel.

Further, the priority information may be used to perform the bearer control according to the priority information when the terminal moves into a target network that does not support extended bearer.

The moving of the terminal into the target network that does not support the extended bearer may include switching the terminal to the target network that does not support the extended bearer or accessing the terminal to the target network that does not support the extended bearer. In one embodiment, the terminal is handed over to a target network that does not support extended bearers, and the network can select the bearer to be switched according to the priority information of the bearers. In another implementation manner, when the terminal in an idle state accesses a target network that does not support extended bearers, the terminal may select the bearer to request activation according to the priority and information of the bearers. The network may also select an activated bearer according to the priority information of the bearer. In another implementation manner, when the terminal accesses a target network that does not support extended bearers, if the network receives a downlink data notification from the bearer, it may also decide whether to activate the bearer according to the priority information of the bearer.

Further, when the terminal moves into a target network that does not support extended bearer, the step of performing bearer control according to the priority information may include at least one of the following:

When it is necessary to switch the terminal to a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for switching according to the priority information of the bearers;

When the terminal needs to be handed over to a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected for switching according to the priority information of the bearers ;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select high-priority bearers for activation according to the priority information of the bearers;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers requested by the terminal to be activated exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers;

When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers requested to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer to request activation according to the priority information of the bearers;

When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers that need to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal or the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, select a low-priority bearer according to the priority information of the bearer The bearer is released or remains inactive;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal requests to activate or the number of bearers that the terminal requests to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority of the bearers The message selects a low-priority bearer for release or keeps it inactive;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate or the number of bearers that the terminal needs to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority information of the bearers A bearer with a lower priority is selected for release or remains inactive.

Further, in an implementation manner, the bearers that are not selected for handover, activation, or activation request may be released or kept in an inactive state.

Further, in an implementation manner, preferentially selecting a bearer with a high priority according to the priority information of the bearer may refer to selecting a bearer with one or several highest priorities according to the priority of the bearer. Preferentially selecting a bearer with a low priority according to the priority information of the bearer may refer to selecting a bearer with one or several lowest priorities according to the priority of the bearer. In another implementation manner, preferentially selecting a bearer with a high priority according to the priority information of the bearer may refer to selecting a bearer with a priority indication.

For example, in a handover-related scenario, preferentially selecting a bearer with a high priority according to the priority information of the bearer may be selecting a bearer with a priority indication and/or with a priority activation indication.

For example, in a related scenario of requesting to activate a bearer, preferentially selecting a high-priority bearer according to the priority information of the bearer may be selecting a bearer with a priority indication and/or with a priority request activation indication. Relevant scenarios for requesting bearer activation include a terminal accessing a network that does not support extended bearer (such as a 3G network), and initiating a routing area update request to activate the bearer.

For example, in a related scenario of activating bearers, according to the priority information of the bearers, a bearer with a priority indication and/or a bearer with a priority activation indication may be selected. In the relevant scenarios of activating the bearer, for example, receiving the downlink data notification of the bearer.

Further, after the step of determining the priority information of the bearer, the method may further include at least one of the following:

Send the priority information of the bearer to at least one of the following: UE, the second network element;

Sending the bearer information to at least one of the following: UE, second network element.

In an implementation manner, the first network unit may determine the priority information and send it to the second network unit, and the second network unit directly performs bearer control based on the obtained priority information. In another implementation manner, the first network unit may also send the bearer information to the second network unit, and the second network unit determines the priority information of the bearer according to the bearer information, and then performs bearer control.

Further, the first network unit may include at least one of the following: a first radio access network unit and a first core network unit.

Optionally, the core network unit may include at least one of the following: core network device, core network node, core network function, core network unit, AMF, SMF, UPF, PCF, MME, SGW, PGW, PCRF, SGSN, GGSN .

Optionally, the radio access network unit may include at least one of the following: a radio access network device, a radio access network node, a radio access network functional unit, a 3GPP radio access network, a non-3GPP radio access network, a CU, DU, base station, eNB, gNB, RNC, NodeB, N3IWF, AC, AP, WLAN.

Further, the second network unit includes at least one of the following: a second radio access network network unit and a second core network network unit. The details of the radio access network unit are as described above, and will not be repeated here. The network elements of the core network are as described above, and will not be repeated here.

The embodiment of the present invention also provides a method for supporting network bearer control, which is applied to a second network unit or terminal, as shown in FIG. 2 , including:

Step 201: Obtain the priority information of the bearer;

Step 202: Perform bearer control according to the priority information, and the bearer control may include at least one of the following: select a bearer to be activated, select a bearer to be activated, select a bearer to switch, activate a bearer, or request to activate a bearer , whether to switch the bearer, choose to release the bearer, and whether to release the bearer.

In one embodiment, the bearer selected for activation, the bearer selected for activation request, the bearer selected for handover, and the bearer selected for release may generally refer to the bearer selected according to the priority information among several existing bearers of the terminal. bearer. In another implementation manner, whether to activate the bearer, whether to request activation of the bearer, whether to switch the bearer, and whether to release the bearer among the bearers may be operations of the bearer corresponding to the priority information.

In this embodiment, the second network unit or the terminal obtains the priority information of the bearer, and may perform bearer control according to the priority information (the bearer control is as described above, and will not be repeated here). Through the technical solution of the present invention, it is possible to support the interoperability between the extended bearer network and the non-extended bearer network, and better meet the increasing business requirements.

Further, the priority information may include at least one of the following: priority indication, priority handover indication, priority request activation indication, priority activation indication, and priority level. In one embodiment, priority indications can be further divided into: priority handover indications, priority request activation indications, and priority activation indications, so as to be applied to different bearer control scenarios, such as handover scenarios, bearer activation scenarios, and request activation bearer scenarios.

Further, the step of carrying out bearer control according to the priority information may include at least one of the following:

select a bearer with a priority activation indication or a priority indication for activation;

Selecting a bearer with a priority activation request indication or a priority indication to request activation;

Selecting a bearer with a priority handover indication or a priority indication for handover;

According to the priority level, the bearer with high priority is selected for activation, activation request or handover.

According to the priority levels, the bearers with one or several highest priorities are selected for activation, activation request or handover.

Further, the step of obtaining the priority information of the bearer may include one of the following:

The priority information of the bearer is acquired by receiving the priority information of the bearer sent by the first network unit.

The priority information of the bearer is determined by acquiring the bearer information.

Further, the bearer information may include at least one of the following: bearer QoS information, bearer-mapped QoS flow information, bearer-mapped PDU session information, bearer service information, bearer identification information, bearer identification type Information, operator's strategy.

The bearer QoS information may include at least one of the following: bearer QCI, GBR bearer QoS parameters, and bearer ARP;

The information of the QoS flow of the bearer mapping may include at least one of the following: the identification of the QoS flow, the QoS profile (context) of the bearer mapped QoS flow, the 5QI of the bearer mapped QoS flow, and the ARP of the bearer mapped QoS flow;

The information of the bearer mapping PDU session may include at least one of the following: the identifier of the bearer mapping PDU session, the slice identification information (such as S-NSSAI) of the bearer mapping session;

The service information carried includes at least one of the following: multimedia priority service, high priority access.

The identification type information of the bearer may include at least one of the following: whether it is an extended bearer identification, whether it is a non-extended bearer identification;

The bearer identification information includes at least one of the following: an extended bearer ID and a non-extended bearer ID.

In an implementation manner, the priority information of the bearer is the ARP of the bearer or the ARP of the QoS flow to which the bearer is mapped. When multiple QoS flows are mapped to a bearer, the ARP with the highest priority is selected as the ARP of the bearer.

Further, the step of performing bearer control according to the priority information may include: performing bearer control according to the priority information when the terminal moves into a target network that does not support extended bearer.

Further, when the terminal moves into a target network that does not support extended bearer, the step of performing bearer control according to the priority information may include at least one of the following:

When it is necessary to switch the terminal to a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for switching according to the priority information of the bearers;

When the terminal needs to be handed over to a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected for switching according to the priority information of the bearers ;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select high-priority bearers for activation according to the priority information of the bearers;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers requested by the terminal to be activated exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers;

When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers requested to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer to request activation according to the priority information of the bearers;

When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers that need to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal or the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, select a low-priority bearer according to the priority information of the bearer The bearer is released or remains inactive;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal requests to activate or the number of bearers that the terminal requests to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority of the bearers The message selects a low-priority bearer for release or keeps it inactive;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate or the number of bearers that the terminal needs to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority information of the bearers A bearer with a lower priority is selected for release or remains inactive.

Further, in an implementation manner, preferentially selecting a bearer with a high priority according to the priority information of the bearer may refer to selecting a bearer with one or several highest priorities according to the priority of the bearer. Preferentially selecting low-priority bearers according to the priority information of the bearers refers to selecting bearers with one or several lowest priorities according to the priority levels of the bearers;

In another implementation manner, preferentially selecting a bearer with a high priority according to the priority information of the bearer may refer to selecting a bearer with a priority indication.

For example, in a handover-related scenario, preferentially selecting a bearer with a high priority according to the priority information of the bearer may be selecting a bearer with a priority indication and/or with a priority activation indication.

For example, in a related scenario of requesting to activate a bearer, preferentially selecting a high-priority bearer according to the priority information of the bearer may be selecting a bearer with a priority indication and/or with a priority request activation indication. Relevant scenarios for requesting bearer activation include a terminal accessing a network that does not support extended bearer (such as a 3G network), and initiating a routing area update request to activate the bearer.

For example, in a related scenario of activating bearers, according to the priority information of the bearers, a bearer with a priority indication and/or a bearer with a priority activation indication may be selected. In the relevant scenarios of activating the bearer, for example, receiving the downlink data notification of the bearer.

Further, the first network unit may include at least one of the following: a first radio access network unit and a first core network unit.

Optionally, the core network unit may include at least one of the following: core network device, core network node, core network function, core network unit, AMF, SMF, UPF, PCF, MME, SGW, PGW, PCRF, SGSN, GGSN .

Optionally, the radio access network unit may include at least one of the following: a radio access network device, a radio access network node, a radio access network functional unit, a 3GPP radio access network, a non-3GPP radio access network, a CU, DU, base station, eNB, gNB, RNC, NodeB, N3IWF, AC, AP, WLAN.

Further, the second network unit includes at least one of the following: a second radio access network network unit and a second core network network unit. The details of the radio access network unit are as described above, and will not be repeated here. The network elements of the core network are as described above, and will not be repeated here.

The method for supporting network bearer control of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments:

Specific embodiment one

In this embodiment, when the PDN connection is established, the core network network unit (such as MME, AMF) confirms the priority information of the bearer for the default bearer of the PDN connection.

Specifically, as shown in FIG. 3, the method for supporting network bearer control in this embodiment includes the following steps:

Step 1, a core network unit (such as MME) receives a PDN connection establishment request message.

In step 2, the MME assigns priority information to the default bearer of the PDN connection.

The priority information is as described in steps 101 and 102, and will not be repeated here. The priority information may be used for bearer control, and the bearer control is as described in step 101 and step 102, which will not be repeated here. For example, it can be used for one of the following: when the UE accesses a network that does not support the extended bearer, it is used to determine the priority of activating the bearer; when the wireless access network switches the UE to a target network that does not support the extended bearer, it is used to determine the priority of switching the bearer .

In an implementation manner, only the bearer assigned with the non-extended bearer identifier needs to confirm the priority information. In step 3, the SGW sends a session creation request message to the PGW. The message may indicate priority information of the bearer.

Depending on the information received, the PGW may perform at least one of the following:

An activated bearer is determined according to the priority information.

In step 4, the PGW sends a session creation response message to the SGW. The message may indicate priority information of the bearer.

Depending on the information received, the PGW may perform at least one of the following:

An activated bearer is determined according to the priority information.

In step 5, the SGW sends a session creation response message to the MME.

In step 6, the MME sends a bearer establishment request message to the RAN node, and the message may indicate at least one of the following: priority information of the created bearer, and NAS data packets.

The NAS data packet may include a NAS message such as a session creation response message or a bearer context creation message, and the NAS message may indicate at least one of the following: priority information of the created bearer.

The MME may send the priority of sending the bearer to the UE in at least two ways as follows.

The RAN can be notified through the S1 message, and the RAN notifies the UE AS layer through the RRC message. The AS layer of the UE may inform the upper layers of the UE of the received bearer priority information.

The MME may also send the bearer priority information to the UE through a NAS message.

Based on the information received, the RAN node may perform at least one of the following:

Save the context of the bearer, including the priority information of the bearer;

When the UE is handed over to the target network that does not support the extended bearer, the priority of the handover bearer is determined. For example, there are 11 bearers with non-extended bearer identifiers, and at most 8 bearers need to be selected for switching according to the bearer priority information.

In step 7, the RAN node sends an RRC message to the UE, and the message may indicate at least one of the following: priority information of the created bearer, NAS data packet.

Based on the information received, the UE may perform at least one of the following:

Save the context of the bearer, including the priority information of the bearer;

When the UE accesses a network that does not support the extended bearer, it determines the priority of activating the bearer. For example, there are 11 bearers with non-extended bearer identifiers, and at most 8 bearers need to be selected for activation according to the bearer priority information. Through the above PDN connection establishment process, the priority information of the default bearer of the PDN connection is stored in the PGW, SGW, MME, radio access network, and UE as the bearer context respectively. In a network that supports extended bearers, the subsequent network can update the priority information of the bearers.

Step 8, the UE sends an RRC message to the RAN node.

Step 9: The RAN node sends a bearer establishment response message to the MME.

Step 10, the MME and the SGW modify the bearer.

Specific embodiment two

In this embodiment, when the dedicated bearer is established, the core network network unit (such as MME, AMF) confirms the bearer priority information for the dedicated bearer.

Specifically, as shown in FIG. 4, the method for supporting network bearer control in this embodiment includes the following steps:

In step 1, the PGW sends a bearer creation request message to the SGW.

In step 2, the SGW sends a bearer creation request message to the MME.

In step 3, the MME confirms the bearer priority information for the created bearer.

The priority information is as described in step 101 and step 102, which will not be repeated here. The priority information may be used for bearer control, and the bearer control is as described in step 101 and step 102, which will not be repeated here. For example, the priority can be used for one of the following: it is used to determine the priority of activating the bearer when the UE accesses the network that does not support the extended bearer, and it is used to determine the handover when the radio access network switches the UE to a target network that does not support the extended bearer Bearer priority.

In an implementation manner, only the bearers allocated with the non-extended bearer ID need to confirm the priority information.

The MME sends a bearer establishment request message to the RAN node.

The message may indicate at least one of the following: priority information of the created bearer, and NAS data packets.

The NAS data packet may include a NAS message such as a session creation response message or a bearer context creation message, and the NAS message may indicate at least one of the following: priority information of the created bearer.

The MME may send the priority of sending the bearer to the UE in at least two ways as follows.

The RAN node can be notified through the S1 message, and the RAN node can then notify the UE AS layer through the RRC message. The AS layer of the UE may inform the upper layers of the UE of the received bearer priority information.

The MME may also send the bearer priority information to the UE through a NAS message.

Based on the information received, the RAN node may perform at least one of the following:

Save the context of the bearer, including the priority information of the bearer;

When the UE is handed over to the target network that does not support the extended bearer, the priority of the handover bearer is determined. For example, there are 11 bearers with non-extended bearer identifiers, and at most 8 bearers need to be selected for switching according to the bearer priority information.

Step 4, the radio access network sends an RRC message (such as an RRC reconfiguration request message) to the UE. The message may indicate at least one of the following: priority information of the created bearer, and NAS data packets.

Based on the information received, the UE may perform at least one of the following:

Save the context of the bearer, including the priority information of the bearer;

When the UE accesses a network that does not support the extended bearer, it determines the priority of activating the bearer. For example, there are 11 bearers with non-extended bearer identifiers, and at most 8 bearers need to be selected for activation according to the bearer priority information. In step 5, the UE returns an RRC message (such as an RRC reconfiguration response message) to the radio access network.

Step 6, the radio access network sends a bearer establishment response message to the MME.

In step 7, the UE sends an uplink transmission message to the RAN node.

Step 8, the RAN node sends an uplink transmission message to the MME.

In step 9, the MME returns a create bearer response message to the SGW. The message may indicate priority information of the bearer.

Depending on the information received, the PGW may perform at least one of the following:

An activated bearer is determined according to the priority information.

In step 10, the SGW sends a create bearer response message to the PGW. The message may indicate default bearer priority information.

The message may indicate priority information of the bearer.

Depending on the information received, the PGW may perform at least one of the following:

An activated bearer is determined according to the priority information.

Specific embodiment three

In this embodiment, when establishing or adding a QoS flow for a PDU session, the SMF determines the mapped bearer, and the core network network unit (such as MME, AMF) confirms the priority information for the mapped bearer.

Specifically, as shown in FIG. 5, the method for supporting network bearer control in this embodiment includes the following steps:

In step 1, the UE sends a PDU session establishment request message to the AMF.

In step 2, the AMF sends a session context creation request message to the AMF.

In step 3, the SMF returns a session context creation response message to the AMF.

Step 4: The SMF maps a bearer (such as an EPS bearer) for the PDU session, and requests the AMF to allocate a bearer identifier (such as an EBI) for the mapped bearer. The SMF sends an EBI allocation request message to the AMF.

The AMF confirms the priority information for the requested bearer. The priority information is as described in step 101, which will not be repeated here. The priority information may be used for bearer control, and the bearer control is as described in step 101, which will not be repeated here. For example, the priority can be used for one of the following: it is used to determine the priority of activating the bearer when the UE accesses the network that does not support the extended bearer, and it is used to determine the handover when the radio access network switches the UE to a target network that does not support the extended bearer Bearer priority. In an implementation manner, only the bearers allocated with the non-extended bearer ID need to confirm the priority information. In step 5, the AMF sends an EBI allocation response message to the SMF. At least one of the following may be indicated in the message: priority information carried by the PDU session mapping.

In step 6, the SMF sends a N1N2 message transfer message to the AMF. The message may indicate at least one of the following: N1 session container, N2 session message.

The N1 session container or the N2 session message includes at least one of the following: priority information carried by the PDU session mapping.

In step 7, the AMF sends a PDU session resource establishment request message to the RAN node. The message may indicate at least one of the following: priority information carried by the PDU session mapping, and NAS data packets.

The NAS data packet may include NAS messages such as creating a session response message or modifying a session message, and the NAS message may indicate at least one of the following: priority information carried by the PDU session mapping.

The AMF may send the priority information of sending the PDU session mapping bearer to the UE in at least two ways as follows.

The RAN node can be notified through the S1 message, and the RAN node can then notify the UE AS layer through the RRC message. The AS layer of the UE may inform the upper layer of the UE of the priority information carried by the received PDU session mapping.

The MME may also send the priority information carried by the PDU session mapping to the UE through the NAS message.

Based on the information received, the RAN node may perform at least one of the following:

Save the context of the bearer, including the priority information of the bearer;

When the UE is handed over to the target network that does not support the extended bearer, the priority of the handover bearer is determined. For example, there are 11 bearers with non-extended bearer identifiers, and at most 8 bearers need to be selected for switching according to the bearer priority information.

Step 8, the radio access network sends an RRC message (such as an RRC reconfiguration request message) to the UE. The message may indicate at least one of the following: priority information carried by the PDU session mapping, and NAS data packets.

Based on the information received, the UE may perform at least one of the following:

Save the context of the bearer, including the priority information of the bearer;

When the UE accesses a network that does not support the extended bearer, it determines the priority of activating the bearer. For example, there are 11 bearers with non-extended bearer identifiers, and at most 8 bearers need to be selected for activation according to the bearer priority information.

In step 9, the UE returns an RRC message (such as an RRC reconfiguration response message) to the radio access network.

Step 10, the wireless access network unit returns a PDU session resource establishment response message to the AMF.

In step 11, the AMF sends an update session context request message to the SMF.

In step 12, the SMF sends a session modification request message to the UPF. The message may indicate at least one of the following: the identifier of the bearer mapped to the PDU session includes a first bearer identifier and/or a second bearer identifier.

Depending on the information received, the UPF may perform at least one of the following:

Save the priority information of the mapping bearer.

An activated bearer is determined according to the priority information. For example, when the UE accesses a network that does not support extended bearers, the UPF needs to determine the activated bearers according to the priority level information.

In step 13, the UPF sends a session modification response message to the SMF.

Step 14, the SMF sends an update session context bearer response message to the AMF.

Specific embodiment four

In this embodiment, when the UE switches from a network that supports extended bearers (such as 4G) to a network that does not support extended bearers (such as a 3G network), the source wireless access network node determines the bearers that can be switched based on the priority information of the bearers. .

Specifically, as shown in FIG. 6, the method for supporting network bearer control in this embodiment includes the following steps:

Step 1, the 4G radio access network network unit (also referred to as LTE, UTRAN, etc.) receives the measurement report reported by the UE. A toggle event occurs.

In step 2, the 4G radio access network unit discovers that the target network is a network that does not support extended bearers (such as a 3G network). Optionally, the 4G radio access network unit only switches bearers with non-extended bearer identifiers, including but not limited to at least one of the following:

When the terminal is handed over to a target network that does not support extended bearer, the 4G radio access network network unit determines the bearer control according to the priority information of the bearer, such as selecting the bearer to be handed over. The bearer control is as described in step 202, which will not be repeated here. For example, there are 11 bearers with non-extended bearer identifiers, and at most 8 bearers need to be selected for switching according to the bearer priority information.

The network element of the 4G radio access network sends a handover request message to the MME. The message includes the EPS bearer context of the selected bearer.

Network bearer control step 3. The MME sends a redirection request message to the target SGSN (Serving GPRS Support Node, GPRS serving support node). The redirection request message includes at least the EPS bearer context.

Step 4. The target SGSN sends a session context creation request message to the target SGW, and the session context creation request message includes at least the EPS bearer context.

Step 5. The target SGW sends a session context creation request message to the PGW, and the session context creation request message includes at least the EPS bearer context.

Step 6: The PGW sends a session context creation response message to the target SGW.

Step 7: The target SGW sends a create session context response message to the target SGSN.

Step 8. The target SGSN sends a relocation request message to the target RAN node, and the relocation request message includes at least the EPS bearer context.

Step 9: The target RAN node sends a relocation request confirmation message to the target SGSN.

Step 10, the target SGSN establishes an indirect data forwarding channel with the target SGW.

Step 11, the target SGSN sends a redirection response message to the MME.

Step 12, the MME confirms the data forwarding address with the source SGW.

Step 13, the MME sends a handover command to the source RAN node.

Step 14, the source RAN node sends an RRC reconfiguration request message to the UE;

Step 15, the UE sends an RRC reconfiguration response message or a handover to UTRAN message to the target RAN node.

Step 16, the target RAN node sends a redirection completion notification to the target SGSN.

Step 17, the target SGSN forwards a redirection completion notification to the MME.

Step 18, the target SGSN sends a modify bearer request message to the target SGW.

Step 19, the target SGW sends a modify bearer request message to the PGW.

Step 20, the PGW sends a modify bearer response message to the target SGW.

Step 21, the target SGW sends a modify bearer response message to the target SGSN.

Embodiment five

Specifically, as shown in FIG. 7, in this embodiment, the method for supporting network bearer control includes the following steps:

Step 1, the UE moves into the 3G network, and sends a location update request message (such as a routing area update request message) to the SGSN. When the UE accesses the bearer that is activated according to the priority of the bearer. The UE determines the bearer control according to the priority information of the bearer, for example, selects the bearer for activation request. The bearer control is as described in step 202, which will not be repeated here. For example, there are 11 bearers with non-extended bearer identifiers, and at most 8 bearers need to be selected for activation according to the bearer priority information.

The UE sends a location update request message (such as a routing area update request) message to the target SGSN through the RAN node, and the message may indicate the bearer to be activated.

Step 2, the target SGSN sends an acquisition context message to the MME/or SGSN;

Step 3: The SGSN sends an update PDP context request message to the PGW/or GGSN.

The PGW determines bearer control according to the priority information of the bearer, such as selecting an activated bearer. The bearer control is as described in step 202, which will not be repeated here.

Step 3, the PGW/or GGSN sends an update PDP context response message to the SGSN;

Step 4. The SGSN sends a location update response message to the UE.

Step 5. The SGSN sends a location update response message to the UE.

The embodiment of the present invention also provides a device for supporting network bearer control, which is applied to the first network unit, as shown in FIG. 8 , including:

The first acquiring module 31 is configured to acquire bearer information;

The first processing module 32 is configured to determine the priority information of the bearer according to the acquired bearer information;

The priority information may be used for bearer control, and the bearer control includes at least one of the following: select a bearer to be activated, select a bearer to be activated, select a bearer to switch, whether to activate a bearer, whether to request to activate a bearer, whether to switch bearer, the bearer selected to be released, and whether to release the bearer.

In this embodiment, the first network unit may perform bearer control according to the determined priority information (the bearer control is as described above, and will not be repeated here). Alternatively, the first network unit may send the determined priority information of the bearer to the second network unit or the terminal, so that the second network unit or the terminal performs the bearer control (the bearer control is as described above, and will not be repeated here. ). Through the technical solution of the present invention, it is possible to support the interoperability between the extended bearer network and the non-extended bearer network, and better meet the increasing business requirements. Increasing business demands

Further, the priority information includes at least one of the following: priority indication, priority handover indication, priority request activation indication, priority activation indication, and priority level.

Further, the bearer includes one of the following: a default bearer for a PDN connection, a dedicated bearer for a PDN connection, an EPS bearer, a PDP context, a bearer mapped to a PDU session, a DRB, and a logical channel.

Further, the device also includes:

A sending module that can be used to perform at least one of the following:

The priority information of the bearer may be sent to at least one of the following: UE, the second network element;

The bearer information may be sent to at least one of the following: UE, second network element.

Further, the second network unit includes at least one of the following: a second radio access network network unit and a second core network network unit. The radio access network unit is as described in the steps in Figure 1, and will not be repeated here. The network unit of the core network is as described in the steps in Figure 1, and will not be repeated here.

Further, the first acquisition module is specifically configured to perform at least one of the following:

receiving a bearer identifier allocation request of the bearer;

receiving the establishment request of the bearer;

receiving a packet data network PDN connection establishment request for the bearer;

A packet data unit PDU session establishment request for the bearer is received.

Further, the bearer information may include at least one of the following: bearer QoS information, bearer-mapped QoS flow information, bearer-mapped PDU session information, bearer service information, bearer identification information, bearer identification type Information, operator's strategy.

The bearer QoS information may include at least one of the following: bearer QCI, GBR bearer QoS parameters, and bearer ARP;

The information of the QoS flow of the bearer mapping may include at least one of the following: the identifier of the QoS flow, the QoS profile (context) of the bearer mapped QoS flow, the 5QI of the bearer mapped QoS flow, and the ARP of the bearer mapped QoS flow;

The information of the bearer mapping PDU session may include at least one of the following: the identifier of the bearer mapping PDU session, the slice identification information (such as S-NSSAI) of the bearer mapping session;

The service information carried includes at least one of the following: multimedia priority service, high priority access.

The identification type information of the bearer may include at least one of the following: whether it is an extended bearer identification, whether it is a non-extended bearer identification;

The bearer identification information includes at least one of the following: an extended bearer ID and a non-extended bearer ID.

In an implementation manner, the priority information of the bearer is the ARP of the bearer or the ARP of the QoS flow to which the bearer is mapped. When multiple QoS flows are mapped to a bearer, the ARP with the highest priority is selected as the ARP of the bearer.

Further, the first processing module is specifically configured to determine the priority information of the bearer when the identification type information of the bearer is a non-extended bearer identification.

Further, the priority information is used to perform bearer control according to the priority information when the terminal moves into a target network that does not support extended bearers, and the bearer control may include at least one of the following: selecting an activated bearer, selecting a request Activated bearer, selected bearer to be switched, whether to activate the bearer, whether to request activation of the bearer, whether to switch the bearer, selected to release the bearer, and whether to release the bearer.

Further, the first network unit includes at least one of the following: a first radio access network network unit and a first core network network unit. The radio access network unit is as described in the steps in Figure 1, and will not be repeated here. The network unit of the core network is as described in the steps in Figure 1, and will not be repeated here.

The first processing module is configured to perform the bearer control according to the priority information when the terminal moves into a target network that does not support extended bearers.

The first processing module may be specifically configured to perform at least one of the following:

When it is necessary to switch the terminal to a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for switching according to the priority information of the bearers;

When the terminal needs to be handed over to a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected for switching according to the priority information of the bearers ;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select high-priority bearers for activation according to the priority information of the bearers;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers requested by the terminal to be activated exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers;

When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers requested to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer to request activation according to the priority information of the bearers;

When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers that need to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal or the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, select a low-priority bearer according to the priority information of the bearer The bearer is released or remains inactive;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal requests to activate or the number of bearers that the terminal requests to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority of the bearers The message selects a low-priority bearer for release or keeps it inactive;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate or the number of bearers that the terminal needs to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority information of the bearers A bearer with a lower priority is selected for release or remains inactive.

The embodiment of the present invention also provides a device for supporting network bearer control, which is applied to a second network unit or terminal, as shown in FIG. 9 , including:

The second acquiring module 41 is configured to acquire the priority information of the bearer;

The second processing module 42 is configured to perform bearer control according to the priority information, and the bearer control includes at least one of the following: a bearer selected for activation, a bearer selected for activation, a bearer selected for switching, a bearer activated or not, whether The bearer to be activated, the bearer to be switched, the bearer to be released, and the bearer to be released.

In this embodiment, the second network unit or the terminal obtains the priority information of the bearer, and may perform bearer control according to the priority information (the bearer control is as described above, and will not be repeated here). Through the technical solution of the present invention, it is possible to support the interoperability between the extended bearer network and the non-extended bearer network, and better meet the increasing service requirements.

The bearer includes one of the following: a default bearer for a PDN connection, a dedicated bearer for a PDN connection, an EPS bearer, a PDP context, a bearer mapped to a PDU session, a DRB, and a logical channel.

Further, the priority information includes at least one of the following: priority indication, priority handover indication, priority request activation indication, priority activation indication, and priority level.

Further, the second processing module is specifically configured to perform at least one of the following:

select a bearer with a priority activation indication or a priority indication for activation;

Selecting a bearer with a priority activation request indication or a priority indication to request activation;

Selecting a bearer with a priority handover indication or a priority indication for handover;

Select a bearer with high priority for activation, request activation or handover according to the priority level;

According to the priority levels, the bearers with one or several highest priorities are selected for activation, activation request or handover.

Further, the second obtaining module may be specifically configured to perform one of the following:

The priority information of the bearer is acquired by receiving the priority information of the bearer sent by the first network unit.

The priority information of the bearer is determined by acquiring the bearer information.

Further, the bearer information may include at least one of the following: bearer QoS information, bearer-mapped QoS flow information, bearer-mapped PDU session information, bearer service information, bearer identification information, bearer identification type Information, operator's strategy.

The bearer QoS information may include at least one of the following: bearer QCI, GBR bearer QoS parameters, and bearer ARP;

The information of the QoS flow of the bearer mapping may include at least one of the following: the identifier of the QoS flow, the QoS profile (context) of the bearer mapped QoS flow, the 5QI of the bearer mapped QoS flow, and the ARP of the bearer mapped QoS flow;

The information of the bearer mapping PDU session may include at least one of the following: the identifier of the bearer mapping PDU session, the slice identification information (such as S-NSSAI) of the bearer mapping session;

The service information carried includes at least one of the following: multimedia priority service, high priority access.

The identification type information of the bearer may include at least one of the following: whether it is an extended bearer identification, whether it is a non-extended bearer identification;

The bearer identification information includes at least one of the following: an extended bearer ID and a non-extended bearer ID.

In an implementation manner, the priority information of the bearer is the ARP of the bearer or the ARP of the QoS flow to which the bearer is mapped. When multiple QoS flows are mapped to a bearer, the ARP with the highest priority is selected as the ARP of the bearer.

Further, the second processing module may be specifically configured to perform bearer control according to the priority information when the terminal moves into a target network that does not support extended bearer. The bearer control may include at least one of the following: select a bearer to activate, select a bearer to request activation, select a bearer to switch, whether to activate a bearer, whether to request activation of a bearer, whether to switch a bearer, select a bearer to release, whether to release The bearer.

Further, the second processing module may be specifically configured to perform at least one of the following:

When it is necessary to switch the terminal to a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for switching according to the priority information of the bearers;

When the terminal needs to be handed over to a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected for switching according to the priority information of the bearers ;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select high-priority bearers for activation according to the priority information of the bearers;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers requested by the terminal to be activated exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers;

When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers requested to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer to request activation according to the priority information of the bearers;

When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers that need to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal or the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, select a low-priority bearer according to the priority information of the bearer The bearer is released or remains inactive;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal requests to activate or the number of bearers that the terminal requests to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority of the bearers The message selects a low-priority bearer for release or keeps it inactive;

When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate or the number of bearers that the terminal needs to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority information of the bearers A bearer with a lower priority is selected for release or remains inactive.

Further, in an implementation manner, preferentially selecting a bearer with a high priority according to the priority information of the bearer may refer to selecting a bearer with one or several highest priorities according to the priority of the bearer. Preferentially selecting low-priority bearers according to the priority information of the bearers refers to selecting bearers with one or several lowest priorities according to the priority levels of the bearers;

In another implementation manner, preferentially selecting a bearer with a high priority according to the priority information of the bearer may refer to selecting a bearer with a priority indication.

For example, in a handover-related scenario, preferentially selecting a bearer with a high priority according to the priority information of the bearer may be selecting a bearer with a priority indication and/or with a priority activation indication.

For example, in a related scenario of requesting to activate a bearer, preferentially selecting a high-priority bearer according to the priority information of the bearer may be selecting a bearer with a priority indication and/or with a priority request activation indication. Relevant scenarios for requesting bearer activation include a terminal accessing a network that does not support extended bearer (such as a 3G network), and initiating a routing area update request to activate the bearer.

For example, in a related scenario of activating bearers, according to the priority information of the bearers, a bearer with a priority indication and/or a bearer with a priority activation indication may be selected. In the relevant scenarios of activating the bearer, for example, receiving the downlink data notification of the bearer.

Further, the second network unit includes at least one of the following: a second radio access network network unit and a second core network network unit. The radio access network unit is as described in the steps in Figure 1, and will not be repeated here. The network unit of the core network is as described in the steps in Figure 1, and will not be repeated here.

An embodiment of the present invention also provides a first network unit, including: a memory, a processor, and a computer program stored in the memory and operable on the processor. When the computer program is executed by the processor, the above-mentioned Steps in the method for supporting network bearer control described above.

An embodiment of the present invention also provides a second network unit, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, when the computer program is executed by the processor, the above-mentioned Steps in the method for supporting network bearer control described above.

Please refer to FIG. 10 . FIG. 10 is a structural diagram of the first network unit or the second network unit applied in the embodiment of the present invention, which can realize the details of the method for supporting network bearer control in the above embodiments and achieve the same effect. As shown in Figure 10, the first network unit or the second network unit 500 includes: a processor 501, a transceiver 502, a memory 503, a user interface 504 and a bus interface, wherein:

In the embodiment of the present invention, the first network unit 500 further includes: a computer program stored in the memory 503 and operable on the processor 501. When the computer program is executed by the processor 501, the following steps are implemented: acquiring bearer information;

Determine the priority information of the bearer according to the acquired bearer information;

The priority information is used to determine at least one of the following: a bearer to be activated, a bearer to be activated, a bearer to be switched, a bearer to be activated, a bearer to be activated, a bearer to be switched, a bearer to be released, Whether to release the bearer.

In FIG. 10 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 501 and various circuits of memory represented by memory 503 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 502 may be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other devices over transmission media. For different user devices, the user interface 504 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but are not limited to keypads, displays, speakers, microphones, and joysticks.

The processor 501 is responsible for managing the bus architecture and general processing, and the memory 503 can store data used by the processor 501 when performing operations.

In the embodiment of the present invention, the second network unit 500 further includes: a computer program stored on the memory 503 and operable on the processor 501, and the computer program is executed by the processor 501 to implement the following steps: obtain the priority of the bearer information;

Bearer control is performed according to the priority information, and the bearer control includes at least one of the following: selecting a bearer for activation, selecting a bearer for requesting activation, selecting a bearer for switching, whether to activate the bearer, or whether to request the activation of the bearer , whether to switch the bearer, choose to release the bearer, and whether to release the bearer.

In FIG. 10 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 501 and various circuits of memory represented by memory 503 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 502 may be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other devices over transmission media. For different user devices, the user interface 504 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but are not limited to keypads, displays, speakers, microphones, and joysticks.

The processor 501 is responsible for managing the bus architecture and general processing, and the memory 503 can store data used by the processor 501 when performing operations.

An embodiment of the present invention also provides a terminal, including: a memory, a processor, and a computer program stored on the memory and operable on the processor. When the computer program is executed by the processor, the above-mentioned support network The steps of the method that hosts the control.

Please refer to FIG. 11 . FIG. 11 is a structural diagram of a terminal applied in an embodiment of the present invention, which can realize the details of the method for supporting network bearer control in the above embodiments and achieve the same effect. As shown in Figure 11, the terminal 600 includes: a processor 604, an antenna 601, a radio frequency device 602, a baseband device 603, a memory 605, a network interface 606, and a bus interface, wherein:

In the embodiment of the present invention, the terminal 600 further includes: a computer program stored in the memory 605 and operable on the processor 604. When the computer program is executed by the processor 604, the following steps are implemented: obtaining the priority information of the bearer; The priority information performs bearer control, and the bearer control includes at least one of the following: select a bearer to be activated, select a bearer to request activation, select a bearer to switch, whether to activate the bearer, whether to request the activation of the bearer, Whether to switch the bearer, choose to release the bearer, and whether to release the bearer.

In FIG. 11 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 604 and various circuits of memory represented by memory 605 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. The network interface 606 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but not limited to keypads, monitors, speakers, microphones, joysticks, and the like.

The processor 604 is responsible for managing the bus architecture and general processing, and the memory 605 may store data used by the processor 604 when performing operations.

An embodiment of the present invention also provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for supporting network bearer control as described above are implemented.

It should be understood that the embodiments described herein may be implemented by hardware, software, firmware, middleware, microcode or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSP Device, DSPD), programmable logic Device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller, microprocessor, other electronic units for performing the functions described in this application or a combination thereof.

For a software implementation, the techniques described herein can be implemented through modules (eg, procedures, functions, and so on) that perform the functions described herein. Software codes can be stored in memory and executed by a processor. Memory can be implemented within the processor or external to the processor.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, devices, or computer program products. Accordingly, embodiments of the invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowcharts and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing terminal equipment to produce a machine such that instructions executed by the computer or processor of other programmable data processing terminal equipment Produce means for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing terminal to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the The instruction means implements the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded into a computer or other programmable data processing terminal equipment, so that a series of operational steps are performed on the computer or other programmable terminal equipment to produce computer-implemented processing, thereby The instructions executed above provide steps for implementing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

Having described preferred embodiments of embodiments of the present invention, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, the appended claims are intended to be interpreted to cover the preferred embodiment and all changes and modifications which fall within the scope of the embodiments of the present invention.

It should also be noted that in this article, relational terms such as first and second etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations Any such actual relationship or order exists between. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or terminal equipment comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements identified, or also include elements inherent in such a process, method, article, or terminal equipment. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

What has been described above is a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principles described in the present invention. within the scope of protection of the invention.

Claims (32)

1. A method for supporting network bearer control, comprising: The CN network unit of the first core network acquires bearer information; The first CN network unit determines the priority information of the bearer according to the acquired bearer information; The first CN network element sends the priority information of the bearer to the terminal and/or the second network element; Wherein, the priority information is used to perform bearer control according to the priority information when the terminal moves into a target network that does not support extended bearer, and the bearer control includes at least one of the following: selecting a bearer for activation, selecting a bearer for activation request bearer, whether to activate the bearer, and whether to request to activate the bearer. 2. The method for supporting network bearer control according to claim 1, characterized in that, The priority information includes at least one of the following: a priority indication, a priority request activation indication, a priority activation indication, and a priority level. 3. The method for supporting network bearer control according to claim 1, wherein the bearer includes one of the following: a default bearer for a PDN connection of a packet data gateway, a dedicated bearer for a PDN connection, an Evolved Packet System EPS bearer, a packet Data protocol PDP context, protocol data unit PDU session mapping bearer, data radio bearer DRB, logical channel. 4. The method for supporting network bearer control according to claim 1, wherein, before the step of determining the priority information of the bearer, the method obtains the information of the bearer by at least one of the following: receiving a bearer identifier allocation request of the bearer; receiving the establishment request of the bearer; receiving a packet data network PDN connection establishment request for the bearer; A packet data unit PDU session establishment request for the bearer is received. 5. The method for supporting network bearer control according to claim 1, wherein the bearer information includes at least one of the following: bearer quality of service (QoS) information, bearer-mapped QoS flow information, bearer-mapped PDU Session information, bearer service information, bearer identification information, bearer identification type information, and operator policies. 6. The method for supporting network bearer control according to claim 5, characterized in that, The QoS information of the bearer includes at least one of the following: the QoS category identifier QCI of the bearer, the QoS parameters carried by the guaranteed bit rate GBR, and the address resolution protocol ARP of the bearer; The information of the QoS flow of the bearer mapping includes at least one of the following: the identification of the QoS flow, the QoS context profile of the bearer mapped QoS flow, the 5QI of the bearer mapped QoS flow, and the ARP of the bearer mapped QoS flow; The information of the bearer mapping PDU session includes at least one of the following: the identification of the bearer mapping PDU session, and the slice identification information of the bearer mapping session; The service information carried includes at least one of the following: multimedia priority service, high priority access; The identification type information of the bearer includes at least one of the following: whether it is an extended bearer identification, whether it is a non-extended bearer identification; The bearer identification information includes at least one of the following: an extended bearer ID and a non-extended bearer ID. 7. The method for supporting network bearer control according to claim 6, wherein the step of determining the priority information of the bearer specifically comprises: When the identifier type information of the bearer is a non-extended bearer identifier, determine the priority information of the bearer. 8. The method for supporting network bearer control according to claim 1, characterized in that, after the step of determining the priority information of the bearer according to the acquired bearer information, the method comprises: When the terminal moves into a target network that does not support extended bearers, the bearer control is performed according to the priority information. 9. The method for supporting network bearer control according to claim 8, wherein when the terminal moves into a target network that does not support extended bearer, the step of performing the bearer control according to the priority information includes the following At least one of: When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers; When the terminal accesses a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, preferentially select high-priority bearers for activation according to the priority information of the bearers; When the terminal accesses a target network that does not support extended bearers, and the number of bearers requested by the terminal to be activated exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer for activation according to the priority information of the bearers; When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers requested to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate; When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate exceeds the maximum number of bearers supported by the target network, preferentially select a high-priority bearer to request activation according to the priority information of the bearers; When a terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers that need to be activated exceeds the maximum number of bearers supported by the target network, a high-priority bearer is preferentially selected according to the priority information of the bearers to activate; When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal or the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, select a low-priority bearer according to the priority information of the bearer Bearer remains inactive; When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal requests to activate or the number of bearers that the terminal requests to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority of the bearers Information selects low priority bearers to remain inactive; When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate or the number of bearers that the terminal needs to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, according to the priority information of the bearers Bearers selected with low priority remain inactive. 10. A method for supporting network bearer control, comprising: The second network unit or terminal obtains bearer priority information, and the priority information is used to perform bearer control according to the priority information when the terminal moves into a target network that does not support extended bearer; the second network unit Or, the terminal performs bearer control according to the priority information, and the bearer control includes at least one of the following: selecting a bearer to activate, selecting a bearer to request activation, whether to activate the bearer, or whether to request activation of the bearer; Wherein, the second network unit includes: a radio access network RAN network unit and a second CN network unit. 11. The method for supporting network bearer control according to claim 10, characterized in that, The priority information includes at least one of the following: a priority indication, a priority request activation indication, a priority activation indication, and a priority level. 12. The method for supporting network bearer control according to claim 10, characterized in that: The bearer includes one of the following: the default bearer of the packet data gateway PDN connection, the dedicated bearer of the PDN connection, the Evolved Packet System EPS bearer, the packet data protocol PDP context, the bearer of the protocol data unit PDU session mapping, the data radio bearer DRB, logic channel. 13. The method for supporting network bearer control according to claim 11, wherein the step of performing bearer control according to the priority information includes at least one of the following: select a bearer with a priority activation indication or a priority indication for activation; Selecting a bearer with a priority activation request indication or a priority indication to request activation; Select the bearer with high priority for activation and request activation according to the priority level; According to the priority levels, the bearers with one or several highest priorities are selected for activation and request for activation. 14. The method for supporting network bearer control according to claim 10, wherein the step of obtaining bearer priority information comprises one of the following: Acquiring the priority information of the bearer by receiving the priority information of the bearer sent by the first network unit; The priority information of the bearer is determined by acquiring the bearer information. 15. The method for supporting network bearer control according to claim 14, wherein the bearer information includes at least one of the following: bearer quality of service (QoS) information, bearer-mapped QoS flow information, bearer-mapped PDU Session information, bearer service information, bearer identification information, bearer identification type information, and operator policies. 16. The method for supporting network bearer control according to claim 15, wherein the bearer QoS information includes at least one of the following: bearer QoS category identifier QCI, guaranteed bit rate (GBR) bearer QoS parameters, bearer address resolution protocol ARP; The information of the bearer-mapped QoS flow includes at least one of the following: the identifier of the QoS flow, the QoS context profile of the bearer-mapped QoS flow, the 5QI of the bearer-mapped QoS flow, and the ARP of the bearer-mapped QoS flow; The information of the bearer mapping PDU session includes at least one of the following: the identification of the bearer mapping PDU session, and the slice identification information of the bearer mapping session; The service information carried includes at least one of the following: multimedia priority service, high priority access; The identification type information of the bearer includes at least one of the following: whether it is an extended bearer identification, whether it is a non-extended bearer identification; The bearer identification information includes at least one of the following: an extended bearer ID and a non-extended bearer ID. 17. The method for supporting network bearer control according to claim 10, wherein the step of performing bearer control according to the priority information comprises: When the terminal moves into a target network that does not support extended bearers, bearer control is performed according to the priority information. 18. The method for supporting network bearer control according to claim 17, wherein when the terminal moves into a target network that does not support extended bearer, the step of performing bearer control according to the priority information includes at least one of the following item: When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal exceeds the maximum number of bearers supported by the target network, the RAN network unit preferentially selects high-priority bearers for activation according to the priority information of the bearers; When the terminal accesses a target network that does not support extended bearers, and the number of bearers with non-extended bearer identifiers of the terminal exceeds the maximum number of bearers supported by the target network, the RAN network unit preferentially selects a high priority according to the priority information of the bearers to activate the bearer; When the terminal accesses a target network that does not support extended bearers, and the number of bearers requested by the terminal to be activated exceeds the maximum number of bearers supported by the target network, the RAN network element preferentially selects high-priority bearers according to the priority information of the bearers to activate; When the terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers requested to be activated exceeds the maximum number of bearers supported by the target network, the RAN network unit preferentially selects the bearer according to the priority information of the bearer High priority bearers are activated; When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate exceeds the maximum number of bearers supported by the target network, the terminal preferentially selects a high-priority bearer to request activation according to the priority information of the bearers ; When the terminal accesses a target network that does not support extended bearers, and the terminal has a non-extended bearer identifier and the number of bearers that need to be activated exceeds the maximum number of bearers supported by the target network, the RAN network unit preferentially selects the bearer according to the priority information of the bearer High priority bearers are activated; When the terminal accesses a target network that does not support extended bearers, and the number of bearers of the terminal or the number of bearers with non-extended bearer identifiers exceeds the maximum number of bearers supported by the target network, the terminal or the second CN network element According to the priority information of the bearer, the low priority bearer is selected to remain inactive; When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal requests to activate or the number of bearers that the terminal requests to activate and have a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, the terminal or the The second CN network unit selects a low-priority bearer according to the priority information of the bearer to keep it inactive; When the terminal accesses a target network that does not support extended bearers, and the number of bearers that the terminal needs to activate or the number of bearers that the terminal needs to activate and has a non-extended bearer identifier exceeds the maximum number of bearers supported by the target network, the terminal or the The second CN network element selects a low-priority bearer according to the priority information of the bearer and keeps it inactive. 19. The method for supporting network bearer control according to claim 18, wherein the prior selection of a high-priority bearer according to the priority information of the bearer comprises at least one of the following: Preferentially selecting a high-priority bearer according to the priority information of the bearer refers to selecting a bearer with one or several highest priorities according to the priority of the bearer; Preferentially selecting low-priority bearers according to the priority information of the bearers refers to selecting bearers with one or several lowest priorities according to the priority levels of the bearers; Preferentially selecting a high-priority bearer according to the priority information of the bearer refers to selecting a bearer with a priority indication; In the related scenario of requesting to activate a bearer, preferentially selecting a high-priority bearer according to the priority information of the bearer refers to selecting a bearer with a priority indication and/or with a priority request activation indication; In a related scenario of activating a bearer, preferentially selecting a high-priority bearer according to the priority information of the bearer refers to selecting a bearer with a priority indication and/or with a priority activation indication. 20. A device supporting network bearer control, comprising: The first obtaining module is used for the first CN network unit to obtain bearer information; The first processing module is used for the first CN network unit to determine the priority information of the bearer according to the obtained bearer information; a sending module, configured for the first CN network unit to send the priority information of the bearer to the terminal and/or the second network unit; Wherein, the priority information is used to perform bearer control according to the priority information when the terminal moves into a target network that does not support extended bearer, and the bearer control includes at least one of the following: selecting a bearer for activation, selecting a bearer for activation request bearer, whether to activate the bearer, and whether to request to activate the bearer. 21. The device supporting network bearer control according to claim 20, characterized in that, The priority information includes at least one of the following: a priority indication, a priority request activation indication, a priority activation indication, and a priority level. 22. The device supporting network bearer control according to claim 20, wherein the first obtaining module is specifically configured to perform at least one of the following: receiving a bearer identifier allocation request of the bearer; receiving the establishment request of the bearer; receiving a packet data network PDN connection establishment request for the bearer; A packet data unit PDU session establishment request for the bearer is received. 23. The device supporting network bearer control according to claim 20, wherein the first processing module is configured to perform the bearer according to the priority information when the terminal moves into a target network that does not support extended bearer control. 24. A device supporting network bearer control, comprising: The second obtaining module is used for the second network unit or the terminal to obtain the priority information of the bearer, and the priority information is used to control the bearer according to the priority information when the terminal moves into a target network that does not support the extended bearer ; The second processing module is used for the second network unit or the terminal to perform bearer control according to the priority information, and the bearer control includes at least one of the following: selecting a bearer to activate, selecting a bearer to request activation, and whether to activate the bearer, whether to request activation of the bearer; Wherein, the second network unit includes: a RAN network unit and a second CN network unit. 25. The device supporting network bearer control according to claim 24, characterized in that, The priority information includes at least one of the following: a priority indication, a priority request activation indication, a priority activation indication, and a priority level. 26. The device supporting network bearer control according to claim 25, wherein the second processing module is specifically configured to perform at least one of the following: select a bearer with a priority activation indication or a priority indication for activation; Selecting a bearer with a priority activation request indication or a priority indication to request activation; Select the bearer with high priority for activation and request activation according to the priority level; According to the priority levels, the bearers with one or several highest priorities are selected for activation and request for activation. 27. The device supporting network bearer control according to claim 24, wherein the second acquiring module is specifically configured to perform one of the following: Acquiring the priority information of the bearer by receiving the priority information of the bearer sent by the first network unit; The priority information of the bearer is determined by acquiring the bearer information. 28. The device supporting network bearer control according to claim 24, wherein the second processing module is specifically configured to perform bearer control according to the priority information when the terminal moves into a target network that does not support extended bearer . 29. A first CN network unit, characterized by comprising: a memory, a processor, and a computer program stored on the memory and operable on the processor, when the computer program is executed by the processor, the The steps of the method for supporting network bearer control described in any one of claims 1-9. 30. A second network unit, characterized by comprising: a memory, a processor, and a computer program stored on the memory and operable on the processor, when the computer program is executed by the processor, the computer program according to claim Steps in the method for supporting network bearer control described in any one of 10-19. 31. A terminal, characterized by comprising: a memory, a processor, and a computer program stored in the memory and operable on the processor, when the computer program is executed by the processor, the computer program according to claims 10-19 can be realized The steps of any one of the methods for supporting network bearer control. 32. A computer-readable storage medium, characterized in that, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the support described in any one of claims 1 to 9 is realized. The steps of the method for network bearer control or the steps for implementing the method for supporting network bearer control according to any one of claims 10 to 19.

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