WO2018201305A1

WO2018201305A1 - Method for selecting radio access technology type, and access network node

Info

Publication number: WO2018201305A1
Application number: PCT/CN2017/082787
Authority: WO
Inventors: 王远; 娄崇
Original assignee: 华为技术有限公司
Priority date: 2017-05-02
Filing date: 2017-05-02
Publication date: 2018-11-08

Abstract

Disclosed in the embodiments of the present invention is a method for selecting a radio access technology type, comprising: an access network node receiving a first service type required by user equipment, and acquiring a first radio access technology type, the first radio access technology type being used for supporting the first service type required by the user equipment; the access network node acquiring a first cell supporting the first radio access technology type; and the access network node sending to the user equipment the identifier of the first cell, the identifier of the first cell being used for instructing the user equipment to access the first cell according to the identifier of the first cell. In addition, further disclosed in the embodiments of the present invention is a device for selecting a radio access technology type. The embodiments of the present invention can enable a user to flexibly access an RAT Type, satisfying the user's requirement for diversification of Service Type.

Description

Method for selecting wireless access technology type and access network node

Technical field

The present invention relates to the field of radio access, and in particular, to a method for selecting a radio access technology type and an access network node.

Background technique

In the future 3GPP network, there are at least three different types of radio access technology types (Radio Access Technology Types, RAT Types), including legacy Long Time Evolution (Legacy LTE), and evolved evolved technology (evolved). Long Time Evolution (eLTE) and the 5th-Generation New Radio (5G NR). Legacy LTE belongs to the 4th Generation Evolved Packet System (4G EPS), and the legacy LTE radio access network node (RAN Node) can only access the evolved packet core network (Evolved Packet). Core, EPC); eLTE, as an evolutionary technology of legacy LTE, can simultaneously access EPC and the fifth generation new core network (5-Generation New Core, 5G New Core). 5G NR can access 5G New Core.

Due to the limitation of RAT capabilities such as spectrum, bandwidth, and air interface technology, different RAT types are likely to provide different services in actual deployment, and there is a correspondence between RAT Type and Service Type. Before accepting the wireless service service, the user equipment (UE) needs to access the corresponding RAT Type to start the normal service process.

In the prior art solution, due to the RAT type currently accessed by the user equipment, it is very likely that the new service that the user equipment needs to initiate is not supported, which may result in the failure to provide new service services for the user, resulting in poor user experience.

Summary of the invention

The embodiment of the invention provides a method for selecting a wireless access technology type and an access network node, which allows the user to flexibly access the RAT Type and meet the user's demand for the service type diversification.

An embodiment of the present invention provides a method for selecting a radio access technology type, including: an access network node receiving a first service type required by a user equipment, acquiring a first radio access technology type, and the first radio connection The first type of the service type is used to support the user equipment requirement; the access network node acquires the first cell that supports the first radio access technology type; and the access network node sends the first cell to the user equipment a cell identifier, where the first cell identifier is used to indicate that the user equipment accesses the first cell according to the first cell identifier.

In the embodiment of the present invention, the access network node obtains the first radio access technology type by receiving the first service type required by the user equipment, and then obtains and supports the first radio access technology according to the first radio access technology type. The first cell of the type is sent to the user equipment, so that the user equipment can access the first cell according to the first cell identifier. It can be seen that the embodiment of the present invention enables the user to flexibly access the RAT Type according to the service requirement, and satisfies the user's demand for the service type diversification.

In a possible design, the access network node receives the first service type required by the user equipment, and the obtaining the first radio access technology type acquisition includes: receiving, by the access network node, a first service type required by the user equipment; The access network node forwards the first service type to a core network; the access network node receives the core network according to the first The first type of radio access technology sent by the service type.

In the embodiment of the present invention, the access network node receives the first service type required by the user equipment, and acquires the first type of the radio access technology, and the implementation manner is: forwarding the first service type required by the user equipment to the core The network, through the core network, senses the correspondence between the service type and the type of the wireless access technology; and then receives the first type of the wireless access technology sent by the core network. It can be seen that, in the embodiment of the present invention, the core network can sense the correspondence between the perceived service type and the type of the wireless access technology.

In a possible design, the first service type that the access network node receives the user equipment requirement includes: the access network node receives an access layer message sent by the user equipment, where the access layer message includes: Carrying a packet data network PDN session establishment request of the first service type;

The forwarding, by the access network node, the first service type to the core network, includes: the access network forwarding, to the core network, the PDN session establishment request that carries the first service type;

Receiving, by the access network node, the first radio access technology type that is sent by the core network according to the first service type, where the access network receives a user plane establishment request sent by the core network, where the user plane The establishing request includes the first radio access technology type obtained by the core network according to the first service type, and the access network node acquires the first radio access technology type from the user plane establishment request .

In the embodiment of the present invention, the first service type may be sent to the access network node in the form of an access layer message, and then the access network node sends a PDN session establishment request carrying the first service type in the access layer message to the access network node. a core network, the core network determines a first type of radio access technology corresponding to the first service type, and sends a user plane setup request carrying the first radio access technology type to the core network, where the access network can pass the user plane The establishment request acquires the first type of wireless access technology.

In a possible design, the access network node receives the first service type required by the user equipment, and the acquiring the first radio access technology type includes: receiving, by the access network node, a first service type required by the user equipment; The access network node queries the correspondence between the service type and the radio access technology type according to the first service type, and acquires the first radio access technology type corresponding to the first service type.

In the embodiment of the present invention, the access network node receives the first service type required by the user equipment, and acquires the first radio access technology type, and another implementation manner is: the access network node itself queries the service type and the wireless A corresponding type of the access technology type, and acquiring a first radio access technology type corresponding to the first service type. In the embodiment of the present invention, the access network side can also sense the correspondence between the service type and the type of the radio access technology.

In a possible design, the first service type that the access network node receives the user equipment requirement includes: the access network node receives an access layer message that is sent by the user equipment and carries the first service type.

In the embodiment of the present invention, the access network node receives the first service type, which may be implemented by receiving an access layer message that is sent by the user equipment and carrying the first service type. In this case, the access is performed. The network can query the corresponding relationship between the service type and the wireless access technology type, and obtain the first wireless access technology type corresponding to the first service type.

In a possible design, the acquiring, by the access network node, the first cell that supports the first radio access network technology type includes:

The access network node acquires a type of radio access technology supported by other access network nodes; the access network node supports the first access technology type and the other access network nodes according to the user location Type of wireless access technology, Determining a first access network node supporting the first type of radio access technology; the access network node acquiring, as the first cell, a cell supporting the first access technology type in the first access network node a cell.

In the embodiment of the present invention, when the access network node cannot support the first radio access technology type, the access network node needs to first acquire the first access network node that supports the first radio access technology type. And the first access network node supports a cell supporting the first access technology type as the first cell.

In one possible design, the method further includes:

Sending, by the access network node, the first type of radio access technology to the first access network node, requesting to establish a connection with the first access network node, and jointly providing the first Wireless access technology type of service.

In the embodiment of the present invention, the access network node sends a connection to the first access network node by using the first radio access technology type to the first access network node, and jointly establishes a connection with the first access network node. The device provides the first wireless access technology type of service. Optionally, the access network node may perform the step after acquiring the first cell, in order to establish a connection with the first access network node; the access network node may also perform the step while acquiring the first cell, The specific implementation manner is: the access network node requests to establish a connection with the first access network node, and then receives a reply from the first access network node, where the reply message may include a first cell identifier, and the access network node The first cell is obtained through the foregoing implementation manner, and a connection is established with the first access network node.

In one possible design, the method further includes:

Receiving, by the access network node, a tunnel identifier allocated by the core network; the access network node transmitting, to the first access network node, a tunnel identifier allocated by the core network; and the access network node receiving the first access a tunnel identifier assigned by the network node; the access network node sends the tunnel identifier allocated by the first access network node to the core network.

In the embodiment of the present invention, when the access network node itself cannot support the first radio access technology type, and needs to acquire the first cell in the first access network node supporting the first radio access technology type, the present application The session tunnel between the first access network node and the core network can be established, which improves the efficiency of service data transmission.

In a possible design, the accessing the network to obtain the first cell supporting the first radio access network technology type includes:

The access network node determines the first cell from a cell that supports the first radio access technology type according to a configuration of a radio access technology type.

In the embodiment of the present invention, if the access network node supports the first radio access technology type, the first cell may be determined from the cell that supports the first radio access technology type according to the configuration of the radio access technology type. .

In a possible design, the user establishment request includes: the first service type, and the method includes:

The access network node allocates network resources to services corresponding to the first service type according to the first service type.

In the embodiment of the present invention, the access network node allocates the network resource to the service corresponding to the first service type according to the first service type, and the first service type may be delivered by the user plane establishment request, and is learned by the access network node. Be able to prepare resources for the user's business in advance to ensure the normal operation of the business process.

In a possible design, the user setup request includes: a first cause value, where the first cause value is used to indicate that the user plane setup request needs to be established by using a corresponding first radio access technology type, The method also includes:

And determining, by the access network node, the step of acquiring the first cell that supports the first radio access network technology type according to the cause value.

In the embodiment of the present invention, the access point may determine, by using the cause value, the step of acquiring the first cell that supports the first radio access network technology type, simplifying the operation procedure, and improving the wireless access of the user equipment. speed.

In a possible design, the sending, by the access network node, the first cell identifier to the user equipment includes:

The access network node initiates an RRC reconfiguration process to the user equipment. In the RRC reconfiguration process, the access network node sends the first cell identifier to the user equipment.

In the embodiment of the present invention, the access network node initiates an RRC reconfiguration process, in which the access network node transmits the first cell identifier to the user equipment in the reconfiguration process; in addition, in the reconfiguration process, the access network node further Configuration information can be sent to the user device.

A second aspect of the embodiments of the present invention discloses a method for selecting a type of a wireless access technology, including:

Receiving, by the first access network node, a request sent by the second access network node, where the request includes a first type of radio access technology; and the first access network node establishes a connection with the second access network node; The first access network node receives an access request sent by the user equipment by using a first radio access technology type, where the access request carries a first cell identifier; and the first access network node establishes the first cell and An air interface channel between the user equipments.

In the embodiment of the present invention, the first access network node supporting the first radio access technology type can establish a connection with the second access network node according to the request of the second access network node, and implement the connection with the user equipment. The air interface between the two provides a service for the user equipment, meets the diversified needs of the user, and improves the user experience.

In one possible design, the method further includes:

The first access network node determines the first cell according to the first type of radio access technology; the first access network node sends the first cell identifier to the second access network node.

In the embodiment of the present invention, when the original radio access network node connected by the user equipment cannot support the first radio technology access type, the first access network node can be configured according to the first radio access sent by the original radio access network node. The technology type determines the first cell, the first cell supports the first radio access technology type, and sends the first cell identifier to the original radio access network node.

In one possible design, the method further includes:

Receiving, by the first access network node, a core network side tunnel identifier sent by the second access network node; and sending, by the first access network node, the first access network node to the second access network node or the core network The tunnel identifier, the core network side tunnel identifier and the tunnel identifier of the first access network node are used to establish a session tunnel between the first access network node and the core network.

The application can establish a session tunnel of the first access network node supporting the first radio access technology type and the core network, thereby improving the efficiency of service data transmission.

In a third aspect, an embodiment of the present invention discloses an access network node, including a processing unit and a communication unit:

The communication unit is configured to receive a first service type required by the user equipment;

The processing unit is configured to acquire a first radio access technology type, where the first radio access technology type is used to support a first service type required by the user equipment, and is further configured to obtain and support the first radio access technology. The first cell of the type;

The communication unit is configured to send a first cell identifier to the user equipment, where the first cell identifier is used to indicate that the user equipment accesses the first cell according to the first cell identifier.

In a possible design, the communication unit is specifically configured to: forward the first service type to a core network; and receive a first radio access technology type sent by the core network according to the first service type.

In a possible design, the communication unit is specifically configured to: receive an access layer message sent by the user equipment, where the access layer message includes: a packet data network PDN session establishment request carrying the first service type Transmitting, to the core network, the PDN session establishment request carrying the first service type; receiving a user plane establishment request sent by the core network, where the user plane establishment request includes the core network according to the first The first radio access technology type obtained by the service type; the processing unit is specifically configured to: acquire the first radio access technology type from the user plane setup request.

In a possible design, the communication unit is specifically configured to: receive a first service type required by the user equipment; the processing unit is specifically configured to: query the service type according to the first service type of the receiving unit Corresponding relationship of the wireless access technology type, acquiring the first wireless access technology type corresponding to the first service type.

In a possible design, the communication unit is specifically configured to: receive an access layer message that is sent by the user equipment and that carries the first service type.

In a possible design, the processing unit is specifically configured to: acquire a type of radio access technology supported by other access network nodes; and according to a user location, the first access technology type and the other access network node Determining, by the type of the radio access technology, the first access network node supporting the first radio access technology type; acquiring the cell in the first access network node supporting the first access technology type as The first cell.

In one possible design, the communication unit is also used to:

Transmitting the first type of radio access technology to the first access network node, requesting to establish a connection with the first access network node, and jointly providing the user equipment with the first radio access technology type service.

In a possible design, the communication unit is further configured to: receive a tunnel identifier allocated by the core network; send the tunnel identifier allocated by the core network to the first access network node; and receive the first access network node assignment a tunnel identifier; sending, to the core network, a tunnel identifier assigned by the first access network node.

In a possible design, the processing unit is further configured to determine the first cell from a cell that supports the first wireless node access technology type according to a configuration of a radio access technology type.

In a possible design, the user establishment request includes: the first service type, and the processing unit is further configured to allocate a network resource to the service corresponding to the first service type according to the first service type.

In a possible design, the user setup request includes: a first cause value, where the first cause value is used to indicate that the user plane setup request needs to be established by using a corresponding first radio access technology type, The processing unit is further configured to: according to the cause value, determine to perform the step of acquiring the first cell that supports the first radio access network technology type.

In a possible design, the communication unit is specifically configured to: initiate an RRC reconfiguration process to the user equipment, where the access network node sends the first cell to the user equipment in an RRC reconfiguration process Logo.

In a fourth aspect, an embodiment of the present invention discloses an access network node, including a processing unit and a communication unit:

The communication unit is configured to receive a request sent by a second access network node, where the request includes a first type of radio access technology;

The processing unit is configured to establish a connection with the second access network node;

The communication unit is further configured to receive an access request sent by the user equipment by using a first radio access technology type, where the access request carries a first cell identifier;

The communication unit is further configured to establish an air interface channel between the first cell and the user equipment.

In a possible design, the processing unit is configured to determine the first cell according to the first type of radio access technology, and the communication unit is configured to send the First cell identity.

In a possible design, the communication unit is further configured to receive a core network side tunnel identifier sent by the second access network node, and send the first access network node to the second access network node or the core network. The tunnel identifier, the core network side tunnel identifier and the tunnel identifier of the first access network node are used to establish a session tunnel between the first access network node and the core network.

In a fifth aspect, an embodiment of the present invention provides an access network node, where the access network node has a function of implementing an access network node behavior in the foregoing method example. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible design, the structure of the access network node includes a processing unit and a communication unit, the processing unit being configured to support the access network node to perform the corresponding function in the above method. The communication unit is configured to support communication between an access network node and other devices. The access network node may also include a storage unit for coupling with the processing unit, which stores program instructions and data necessary for accessing the network node. As an example, the processing unit can be a processor, the communication unit can be a transceiver, and the storage unit can be a memory.

In another possible design, the structure of the access network node includes a receiving unit, a first obtaining unit, a second acquiring unit, a sending unit, and a processing unit, and the units may perform corresponding functions in the foregoing method examples, for details. The detailed description in the method examples will not be described again.

In a sixth aspect, an embodiment of the present invention provides a communication system, where the system includes the access network node of the foregoing aspect. In another possible design, the system may further include other network elements that interact with the access network node in the solution provided by the embodiment of the present invention.

In a seventh aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used by the access network node, including a program designed to perform the above aspects.

In an eighth aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods described in the various aspects above.

Compared with the prior art, in the solution provided by the embodiment of the present invention, the first RAT Type corresponding to the first Service Type required by the UE is determined through the core network or the access network, and then the first RAT is supported by the RAN Node. The first cell of the type, and the first cell identifier is sent to the UE, where the first cell identifier is used to indicate that the UE accesses the first cell according to the first cell identifier, and finally the UE accesses the first cell. It can be seen that the embodiment of the present invention can flexibly select the corresponding RAT type according to the Service Type and implement access, which can meet the requirements of the user for the diversification of the Service Type.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

FIG. 1 is a schematic structural diagram of a network architecture according to an embodiment of the present disclosure;

FIG. 1 is a correspondence table between a Service Type and a RAT Type according to an embodiment of the present invention;

2 is a method for selecting a type of radio access technology according to an embodiment of the present invention;

FIG. 3 is a method for selecting another type of radio access technology according to an embodiment of the present invention;

4 is a method for selecting another type of radio access technology according to an embodiment of the present invention;

FIG. 5 is a method for selecting another type of radio access technology according to an embodiment of the present invention;

FIG. 6 is still another method for selecting a wireless access technology type according to an embodiment of the present invention;

FIG. 7 is still another method for selecting a wireless access technology type according to an embodiment of the present invention;

FIG. 8 is a device for selecting a wireless access technology type according to an embodiment of the present invention;

FIG. 9 is a selection device of another type of wireless access technology according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of an access network node according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another access network node according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic structural diagram of a network architecture according to an embodiment of the present invention. The network structure includes the following network elements: Next Generation Core (NextGen Core), and wireless access. A network node (Radio Access Network Node, RAN Node) and a UE.

Optionally, in the embodiment of the present invention, the network architecture may be applied to a 5G New Core, and the New Core generally refers to a network element or a network function in a core network or a core network. The embodiment of the present invention is exemplified by a network element or a network function in a core network or a core network defined by 5G, but is not limited thereto. This application uses the NextGen Core as an example for 5G New Core, but not limited to this.

Optionally, the RAN Node refers to a radio access network node. In the embodiment of the present invention, a radio access network node supporting eLTE and/or 5G NR is taken as an example, but not limited to this.

Both eLTE and 5G NR can independently access the 5G New Core. Both eLTE and 5G NR have separate signaling planes and user plane interfaces. The signaling plane is used to run the signaling process, and the user plane is used for running and user services. related data.

Optionally, eLTE and 5G NRs are likely to provide different services in actual deployment due to RAT capabilities, such as spectrum, bandwidth, and air interface technology. Operators can deploy both eLTE and 5G NR in the same area. Among them, some business scenarios that require high coverage and high reliability, such as voice calls, inter-vehicle communication, industrial control, etc., are provided by eLTE; others require high-bandwidth and low-latency service scenarios, such as 4K/8K HD. Video transmission, virtual reality (VR) or Augmented Reality (AR), etc., is provided by 5G NR.

Optionally, in the embodiment of the present invention, the UE is a user equipment defined in 3GPP. The UE has the ability to simultaneously connect eLTE and 5G NR. When the UE is in the idle state, the eLTE or 5G NR can be accessed through the existing solution in the background technology to establish an RRC connection, and the normal service flow between the UE and the RAN Node and the New Core is performed.

In the normal running process of the service, the uplink data is sent by the UE to the RAN Node, and then sent to the NextGen Core via the RAN Node; the downlink data is sent to the RAN Node by the NextGen Core. Then sent to the UE via the RAN Node.

Referring to FIG. 1-b, FIG. 1-b is a correspondence table between the network side maintenance service type and the RAT type according to the embodiment of the present invention. Optionally, eLTE and 5G NRs are likely to provide different services in actual deployment due to RAT capabilities, such as spectrum, bandwidth, and air interface technologies, as shown in the table: Service type 1 and Service Type 2 correspond to RATs. Type is eLTE. When the network side requests Service type1 and Service Type 2, it is provided by eLTE. Service type1 and Service Type 2 may specifically be voice call, inter-vehicle communication, and service type corresponding to industrial control service; Service type 3 and Service Type 4 corresponds to the RAT Type of 5G NR. When the network side requests Service type 3 and Service Type 4, it is provided by 5G NR.

Optionally, the Service Type may be a Slice Type, for example, an Enhanced Mobile Broadband Type (eMBB Type), a Mobile Internet Of Things Type (mIoT Type), or the like.

Referring to FIG. 2, FIG. 2 is a method for selecting a type of radio access technology according to an embodiment of the present invention, where the method includes but is not limited to the following steps:

S201. The RAN Node receives the first Service Type of the user equipment requirement, and acquires the first RAT Type.

In the foregoing step S201, the first RAT Type is used to support the first Service Type required by the UE. For example: 4K/8K HD video transmission, service type corresponding to VR or AR service. In the example of the present application, the first RAT Type is exemplified by the 5G NR. In the present application, the first RAT Type is exemplified by the 5G NR, and of course, other RAT types may be used. The first Service Type may be any one of Service Types provided by the 5G NR, and may be Service Type 3 or Service Type 4 in Figure 1-b. Of course, in the actual application, the first Service Type may also be other Service Types provided by the first RAT Type, and not limited to this.

As an optional implementation manner, the RAN Node receives the first service type required by the user equipment, and acquires the first RAT Type, including: the first service type that the RAN Node receives the user equipment requirement; and the access network node forwards the information to the core network. a service type; the RAN Node receives a first radio access technology type that the core network sends according to the first service type.

In the embodiment of the present invention, the RAN Node receives the first service type required by the user equipment, and obtains the first RAT Type, and the specific implementation manner may be:

The RAN Node receives an access layer message that is sent by the user equipment according to the service requirement of the first service type, where the access layer message includes: a packet data network (Packet Data Network, which carries the first Service Type, PDN) a session establishment request, the PDN session establishment request is used to establish a user plane for a service requirement of the first Service Type of the user equipment; the RAN Node forwards the PDN session establishment request to a core network; The RAN Node receives a user plane setup request sent by the core network according to the PDN session establishment request; the RAN Node acquires the first RAT Type from the user plane setup request.

Optionally, the foregoing user plane establishment request includes: the first service type, the RAN Node allocates network resources according to the service type corresponding to the first service type, so that the RAN Node is the first service. The Type service is prepared to ensure the normal operation of the business data.

Optionally, the RAN Node receives the first cause value sent by the core network, where the first cause value can be established in the user plane. The first request value is used to indicate that the user plane establishment request needs to be established by using the corresponding first RAT Type, and after the RAN Node obtains the cause value, determining to perform the step S102 to obtain the support. The operation of the first cell of a RAT Type.

In this implementation manner, the implementation principle of the RAN Node acquiring the first RAT type is: New Core can sense the correspondence between the Service Type and the RAT Type, for example, in Figure 1-b, the Service type 1 and the Service Type 2 correspond to the RAT Type. For eLTE, Service Type 3 and Service Type 4 correspond to a RAT Type of 5G NR, which can maintain a correspondence table between Service Type and RAT Type, and the UE sends a PDN session establishment request to the New Core through the RAN Node. The PDN session establishment request includes: Service Type, then New Core queries the correspondence table between the Service Type and the RAT Type, wherein the correspondence table can be pre-configured in the local database, or the corresponding relationship table can be stored in other databases, and is not specifically limited herein. The New Core then sends the first RAT Type corresponding to the first Service Type to the RAN Node, so that the RAN Node finds a cell supporting the first RAT Type for UE access.

As an optional implementation manner, the RAN Node receives the first service type of the user equipment requirement, and obtains the first RAT type, and the implementation manner further includes:

The RAN Node receives a first Service Type of the user equipment requirement; the RAN Node queries a correspondence between the Service Type and the RAT Type according to the first Service Type, where the correspondence table may be pre-configured in a local database, or The correspondence table may be stored in another database, and is not specifically limited herein; the RAN Node acquires the first RAT Type corresponding to the first Service Type.

The RAN Node receives the first service type required by the user equipment, and specifically includes: the RAN Node receives an access layer message that is sent by the user equipment and carries the first Service Type.

In this implementation manner, the RAN Node obtains the first RAT Type implementation principle: the RAN Node can sense the correspondence between the Service Type and the RAT Type, for example, in FIG. 1-b, the Service type 1 and the Service Type 2 correspond to the RAT Type. For eLTE, Service Type 3 and Service Type 4 correspond to a RAT Type of 5G NR, which can maintain a correspondence table between the Service Type and the RAT Type, and the UE sends an access layer message carrying the first service type to the RAN Node, and the RAN Node queries the Service. a correspondence table between the Type and the RAT Type, thereby determining the first RAT Type corresponding to the first Service Type.

S202. The RAN Node acquires a first cell that supports the first RAT Type.

The first cell that the RAN Node obtains to support the first RAT type may be: acquiring the first cell that supports the first RAT Type, or acquiring the first cell that the other RAN Node supports the first RAT Type.

As an optional implementation manner, in a technical scenario in which the RAN Node does not support the first RAT Type,

The RAN Node obtains the first cell that supports the first RAT type, and the specific implementation manner includes:

The RAN Node acquires a RAT Type supported by the other RAN Node; the RAN Node determines, according to the user location, the first Service Type, and the RAT Type supported by the other RAN Node, the first RAN Node supporting the first RAT Type. The RAN Node acquires, in the first RAN Node, a cell supporting the first RAT Type as the first cell.

Optionally, the RAN Node acquires the cell that supports the first RAT Type in the first RAN Node as the first cell, and specifically includes two implementation manners:

The first implementation manner is that the RAN Node queries other configurations according to the user location and the first RAT Type. Obtaining, by the RAN, the RAT Type and the information of the corresponding cell, the first cell that supports the first RAT Type in the first RAN Node, in the implementation manner, after the RAN Node acquires the first cell, the first RAN The Node sends an add request, and requests to establish a connection with the first RAN Node, and jointly provides the first service type service service for the user equipment.

The second implementation manner is that the RAN Node sends an add request to the first RAN Node, where the add request includes: a first RAT Type, configured to request to acquire a cell supporting the first RAT Type, and then the first RAN Node sends a request according to the add request. The RAN Node sends the first cell identifier, and the RAN Node acquires the first cell.

In the above two specific implementation manners, the RAN Node determines that the specific implementation principle of the first cell that supports the first RAT type is: the RAN Node itself cannot support the first RAN Type, and the RAN Node acquisition can support the first First cell of another RAN Node of a RAT Type

As an optional implementation manner, in a technical scenario that the RAN Node can support the first RAT type, the RAN Node acquires a first cell that supports the first radio access network technology type, and the specific implementation manner includes :

The RAN Node determines the first cell from a cell that supports the first RAT Type by itself according to a configuration of a RAT Type. Optionally, the RAN Node may further acquire the first cell according to the location of the user. Because if the RAN Node itself can support the first RAT Type, only one cell that can be supported needs to be selected, and the first cell can be acquired.

S203. The RAN Node sends a first cell identifier to the UE, where the first cell identifier is used to indicate that the UE accesses the first cell according to the first cell identifier.

S204. The RAN Node receives a message that the UE accesses the first cell.

As an optional implementation manner, the RAN Node sends a first cell identifier to the UE, and the UE accesses the first cell according to the first cell identifier, and sends a response to the RAN Node, where the response is used to notify the RAN Node that the RAN Node is connected. First cell.

In the method described in FIG. 2, the method further includes:

Sending, by the RAN Node, an add request to the first RAN Node, where the add request includes: the first RAT Type, the add request is used to request to establish a connection with the first RAN Node, and jointly serve the UE Providing the service of the first RAT Type. Optionally, the foregoing adding request further includes: configuration information, for example, informing the UE to open a wireless (NR) switch, notifying the UE to perform resource reservation, and the like. This embodiment is applied to the technical scenario in which the RAN Node acquires the first cell in which the other RAN Node supports the first RAT Type.

In the method described in FIG. 2, if a session tunnel between the first RAN Node and the New Core needs to be established, the method further includes:

The RAN Node receives the tunnel identifier allocated by the core network; the RAN Node sends the tunnel identifier allocated by the core network to the first RAN Node; and the RAN Node receives the tunnel identifier allocated by the first RAN Node point; The RAN Node sends the tunnel identifier allocated by the first RAN Node to the core network. Optionally, the tunnel identifier that is allocated by the core network may be sent by the user plane establishment request, or may be sent to the access network node in other forms, which is not specifically limited herein.

In the embodiment of the present invention, the first RAT Type corresponding to the first Service Type required by the UE is determined by the core network or the access network, and then the first cell supporting the first RAT Type is determined by the RAN Node, and sent to the UE. The first cell identifier, where the first cell identifier is used to indicate that the UE accesses the first cell according to the first cell identifier, Finally, the UE accesses the first cell. It can be seen that the embodiment of the present invention can flexibly select the corresponding RAT type according to the Service Type and implement the access, which can meet the user's demand for the service type diversification and improve the user experience.

Based on the embodiment of FIG. 2, FIG. 3 is a method for selecting a type of radio access technology according to an embodiment of the present invention. The method for selecting a radio access technology type in FIG. 2 can be described in detail. Referring to FIG. 3, in the embodiment of the present invention, the method is applied to the first RAT Type and the second RAT Type respectively supported by two different RAN Nodes, and the first service type that is perceived by the core network side and the user equipment needs. Corresponding technical scenario of the first RAT Type, the method includes but is not limited to the following steps:

S301. The UE is connected to a second RAN Node in the access network that supports the second RAT Type.

Optionally, the second RAT Type in the foregoing step S301 is used to support a second Service Type of the user equipment requirement. For example, a service type corresponding to a service such as a voice call, an inter-vehicle communication, and an industrial control. The second RAT type may be a default RAT type pre-configured by the UE, or may be a RAT Type randomly accessed by the UE, or may be otherwise used because of service requirements. The RAT Type of the access. . In the present application, the second RAT Type takes eLTE as an example. eLTE can be used to support some business scenarios that require high coverage and high reliability, such as voice calls, inter-vehicle communication, industrial control, and so on. Of course, in practical applications, the second RAT Type may also be other RAT Types, not limited to this.

Optionally, in the foregoing step, the second RAN Node can support the second RAT Type, but cannot support the first RAT Type corresponding to the first Service Type, because the self-configuration does not support the first RAT Type, or for other reasons. Unable to support the first RAT Type. In the present application, the first RAT Type is exemplified by a 5G NR, and may of course be other RAT Types, not limited to this. Although in the embodiments of the present invention, the terms "first", "second", and the like may be used to describe various types of radio access technologies, these types of radio access technologies should not be limited by these terms, and these terms are only used. It is only to distinguish one wireless access technology type from another wireless access technology type. For example, the first radio access technology type may be the second radio access technology type, and the second radio access technology type may be the first radio access technology type, without departing from the scope of the exemplary embodiments. . In addition, the first radio access technology type and the second radio access technology type may respectively include multiple objects, and the “first” and “second” do not have a specific number of restrictions. The second RAN Node may include at least one cell for supporting the second RAT type, wherein the second cell is any one of the at least one cell.

As an optional implementation, the UE is connected to the second node in the access network that supports the second RAT type, and specifically includes:

The UE is connected to the second cell supporting the second RAT type in the second RAN Node, and obtains the second Service Type service supported by the second RAT Type from the second cell. The second service type may be any one of the service types provided by the second RAT type, and may be the Service Type 1 or the Service Type 2 provided by the eLTE in FIG. 2, and the second service type in FIG. 3 in the embodiment of the present invention. An exemplary description is made for Service Type 1 in FIG. 2. Of course, in practical applications, it can also be other Service Types provided by eLTE, not limited to this.

As an optional implementation manner, the UE selects and accesses the second RAT type (ie, eLTE), and the specific implementation manner includes: the UE accesses the pre-configured RAT type on the network side, selects a default RAT type, and implements access to the RAT. Type: Since the second RAT Type is the RAT Type pre-configured by the UE in the embodiment of the present invention, the UE can directly access the second RAT Type. However, the technical solution cannot flexibly select the corresponding RAT Type according to the Service Type, and cannot satisfy the user pair. When the service type is diversified, when the UE accesses the RAT Type that does not correspond to the Service Type, the service cannot be provided to the user. This creates a problem of low user experience.

As an optional implementation manner, the UE selects and accesses the second RAT type (ie, eLTE), and the specific implementation manner includes: the RAN Node broadcasts the supported RAT Type to the UE in a System Information Broadcast (SIB) message. And the corresponding Service Type. If the RAN Node supports multiple RAT Types, a list of RAT Types and corresponding service types is broadcast. When the UE initiates a Radio Resource Control (RRC) access, the UE selects a corresponding RAT Type according to the service type initiated by the UE, and initiates an access request to the RAN Node according to the RAT Type, and the UE establishes an RRC with the RAN Node. connection.

However, this implementation has certain technical defects. The correspondence between the RAT Node broadcast RAT Type and the service type may cause information leakage of the network service deployment. In addition, the solution may solve the problem that the UE initiates service selection corresponding to the RAT Type from the idle state. For the UE in the connected state, if the UE is currently connected to the RAT Type 1 and obtains the service, but the UE simultaneously applies for a service corresponding to the RAT Type 2, the UE needs to disconnect the RAT Type 1 and re-initiate the RAT Type. 2 connections, resulting in the interruption of the original business, reducing the user experience. This causes the problem that the original service is interrupted and the user experience is low when the connected UE requests to obtain a service type that does not correspond to the original RAT Type.

As an optional implementation manner, the UE selects and accesses the second RAT type (ie, eLTE), which may be implemented by using step S201 to step S203 in FIG. 2 . The embodiment of the present invention can flexibly select a corresponding RAT type and implement access according to the service type in the method of selecting the type of the wireless access technology in FIG. 2, which can meet the user's demand for the service type diversification and improve the user experience.

S302. The UE initiates a service requirement of the first Service Type.

The RAT Type corresponding to the first Service Type in the foregoing step S302 is the first RAT Type. In the example of the present application, the first RAT Type may be 5G NR, and the first Service Type may be in the Service Type provided by the 5G NR. Any one of them may be Service Type 3 or Service Type 4 in Figure 1-b, for example, 4K/8K HD video transmission service, VR/AR service, and the like. An embodiment of the present invention is exemplarily described in FIG. 3 with Service Type 3 supported by the first Service Type as 5G NR. Of course, in practical applications, the first Service Type can also be other Service Types provided by the 5G NR, not limited to this.

As an optional implementation manner, the UE initiates a service requirement of the first service type, and specifically, when the UE is in the second RAT type, the UE starts an application (Application, APP) that requires the first service type.

S303. The UE sends an access layer message to the second RAN Node of the access network, where the access layer message includes a Packet Data Network (PDN) session establishment request.

The PDN session establishment request in the foregoing step S303 includes: a first service type, where the PDN session establishment request is used to establish a user plane for the service requirement of the first service type of the user equipment.

S304. The second node sends a PDN session establishment request to the core network (New Core).

S305. The New Core determines, according to the PDN session establishment request, a RAT Type corresponding to the first Service Type.

As an optional implementation manner, the New Core determines, according to the PDN session establishment request, the RAT Type corresponding to the first Service Type, including: the New Core queries the correspondence between the Service Type and the RAT Type according to the PDN session establishment request, and determines A first RAT Type corresponding to the first Service Type. The corresponding relationship table may be pre-configured in a local database, or may be stored in another database, and is not specifically limited herein. S306, The New Core sends a user plane setup request to the second RAN Node, the request including: first RAT type information.

The user plane establishment request in the above step S306 is used to establish a user plane, and the user plane is used to run the service data of the first Service Type. The user plane establishment request includes: first RAT Type information, where the first RAT Type information is used to indicate that the user plane establishment request needs to be established by using a RAT Type corresponding to the first Service Type, because the first in the embodiment of the present invention The RAT Type corresponding to the Service Type is 5G NR, which is used to indicate that the user plane setup request needs to be established using the 5G NR.

As an optional implementation manner, the user plane establishment request includes a cause value, where the cause value is used to indicate that the second node the user plane establishment request needs to be established by using the first RAT Type. After the second RAN Node identifies the cause value, it can be determined that the user plane setup request needs to find another RAN Node capable of supporting the first RAT Type to support, but cannot establish itself.

S307. The second RAN Node obtains the first cell of the first RAN Node supporting the first RAT Type according to the user plane establishment request.

In the above step S307, the first RAN Node is configured to support the RAT Type corresponding to the first Service Type, that is, support 5G NR.

The second RAN Node obtains the first cell that supports the first node of the first RAT type, and may refer to step 202. In this embodiment, the following is an example:

The second RAN Node queries the RAT Type supported by the other RAN Nodes and the information of the corresponding cell according to the user location and the first RAT Type, and acquires the first cell identifier of the first RAN Node that supports the first RAT Type. In this implementation manner, after acquiring the first cell, the second RAN Node performs the operation of step S308, that is, sends an add request to the first RAN Node, requesting to establish a connection with the first RAN Node, and jointly provide the user equipment with the first A Service Type business service.

S308. The second RAN Node sends an add request to the first RAN Node.

As an optional implementation manner, the second RAN Node sends an add request to the first RAN Node, where the request includes: a first RAT type, where the add request is used to request to establish a connection with the first RAN Node, and jointly serve the user The device provides the service of the first RAT type.

As an optional implementation manner, the second RAN Node sends an add request to the first RAN Node, where the add request includes: a first service type, and the RAN Node allocates a network according to the service type corresponding to the first service type according to the first service type. A resource, or an operation corresponding to the first Service Type, for example, resource scheduling, traffic statistics, and the like.

S309. The first RAN Node sends a response to the second RAN Node.

As an optional implementation manner, after the second RAN Node sends an add request to the first RAN Node, the first RAN Node sends a response to the second RAN Node.

S310. The second RAN Node performs RRC reconfiguration with the UE.

As an optional implementation manner, the second RAN Node performs RRC reconfiguration with the UE, and the second RAN Node sends the first cell identifier to the UE in the RRC reconfiguration process.

As an optional implementation manner, the second RAN Node performs RRC reconfiguration with the UE. In the RRC reconfiguration process, the second RAN Node transmits configuration information to the UE, for example, informing the UE to open the wireless switch, and notifying the UE to fund Source reservation, etc.

S311. The UE completes the RRC reconfiguration process and sends an acknowledgement message to the second RAN Node.

S312. The second RAN Node notifies that the RRC reconfiguration of the first RAN Node and the UE is completed.

S313. The UE initiates a random access channel (RACH) access to the first RAN Node, and completes establishment of an air interface channel between the UE and the first RAN Node.

In the above step S313, the RACH is an uplink transmission channel, and the RACH is received in the entire cell, and is commonly used for PAGING reply and MS call/login access.

As an optional implementation manner, the UE sends a RACH access request to the first RAN Node, where the UE sends a RACH access request according to the first cell identifier, where the RACH access request is used to establish the first cell and the user equipment. Air interface between the air ports.

As an optional implementation manner, after the UE initiates the RACH access request to the first RAN Node, the first RAN Node responds to the RACH access request, indicating that the air interface channel between the first cell and the user equipment has been established.

S314. The second RAN Node sends a user plane setup response to the New Core, where the response is used to notify the New Core that the user plane setup is complete.

S315. The New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed.

As an optional implementation manner, the New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed, and the first service type can be started between the New Core, the access network, and the UE. The normal service flow, the uplink user plane data of the first service type passes through the first RAN Node to the second RAN Node and then to the New Core, and the downlink user plane data passes through the second RAN Node to the first RAN Node and then to the UE.

In the method described in FIG. 3, when the UE connects to the second RAN Node supporting the second RAT type, the UE initiates a service requirement of the first Service Type, and the UE sends the first service to the core network by using the currently connected second RAN Node. a PDN session establishment request of the Type, the core network determines a first RAT Type corresponding to the first service type according to the PDN session establishment request, and sends a user plane setup request carrying the first RAT Type to the second RAN Node, the second RAN Node Determining, according to the first RAT Type, a first cell in the first RAN Node that can support the first RAT Type, and sending an add request to the first RAN Node and receiving a response, and then the second RAN Node performs RRC reconfiguration with the UE, and sends the RRC to the UE. a first cell identifier, after the RRC reconfiguration is completed, establishing an air interface channel between the UE and the first RAN Node, and then the second RAN Node sends a user plane setup response to the New Core, and the New Core sends a response to the UE to notify the UE of the response. The PDN session establishment request has been completed. It can be seen that, in the embodiment of the present invention, the UE in the connected state can access the RAN Node of different RAT types at the same time and obtain the service, which can avoid the interruption of the RAT type of the original connection, thereby causing the corresponding service interruption and improving the user experience.

Based on the embodiment of FIG. 2, please refer to FIG. 4. FIG. 4 is a method for selecting a radio access technology type according to an embodiment of the present invention, which can implement the method for selecting a radio access technology type in FIG. Description of the process. In the embodiment of the present invention, the method is applied to the first RAT Type and the second RAT Type respectively supported by two different RAN Nodes, and the first RAT Type corresponding to the first Service Type required by the user equipment is perceived by the core network. And a technical scenario of establishing a session tunnel between the first RAN Node and the core network, where the first RAN Node may be a RAN Node supporting the first RAT Type, and the method for selecting the type of the wireless access technology includes but not Limit In the following steps:

S401. The UE is connected to a second RAN Node in the access network that supports the second RAT Type.

Optionally, the definition and explanation of the related nouns in the above step S401 are the same as in FIG. 3.

As an optional implementation manner, the UE is connected to the second RAN Node that supports the second RAT type in the access network, and specifically includes: the UE is connected to the second cell in the second RAN Node that supports the second RAT type, Obtaining a service of the second RAT Type from the second cell.

As an optional implementation manner, the UE is currently connected to the second RAN Node in the access network that supports the second RAT Type, and the UE is obtaining the service of the second Service Type through the eLTE. The definition and explanation of the second Service Type are the same as in FIG.

As an optional implementation manner, the specific implementation manner in which the UE selects and accesses the second RAT Type is the same as that in FIG. 3.

S402. The UE initiates a service requirement of the first Service Type.

The definition and explanation of the first Service Type in the above step S402 are the same as in FIG.

S403. The UE sends an access layer message to the second RAN Node of the access network, where the access layer message includes a Public Data Network (PDN) session establishment request.

The PDN session establishment request in the above step S403 includes: a first service type, the PDN session establishment request is used to establish a user plane for the service requirement of the first service type of the user equipment.

S404. The second RAN Node sends a PDN session establishment request to the New Core.

S405. The New Core determines, according to the PDN session establishment request, a RAT Type corresponding to the second Service Type.

As an optional implementation manner, the New Core determines, according to the PDN session establishment request, that the RAT type corresponding to the first service type includes: the New Core queries the correspondence between the Service Type and the RAT Type according to the PDN session establishment request. The first RAT Type corresponding to the first service type is determined, and the second RAN Node currently connected by the UE can only support the first RAT Type, and the UE determines that the second RAN Node cannot support the first Service Type requested by the UE. The corresponding relationship table may be pre-configured in a local database, or may be stored in another database, and is not specifically limited herein.

S406. The New Core sends a user plane establishment request to the second RAN Node, where the request includes: a second RAT type information and a core network tunnel identifier.

The definition and explanation of the user plane establishment request in the above step S406 are the same as in FIG.

As an optional implementation manner, the user plane establishment request includes a cause value, where the cause value is used to indicate that the user plane needs to be established by the first RAT type, and the user plane needs to use the RAN capable of supporting the first RAT Type. The session tunnel of the Node and the core network, and the second RAN Node can determine that the user plane cannot be established after obtaining the cause value, and needs to find another RAN Node that can support the first RAT type.

S407. The second RAN Node acquires a first cell that supports the first RAN Node of the first RAT Type according to the user plane establishment request.

The definition and explanation of the first RAN Node in the above step S407 are the same as in FIG. In the foregoing step S407, the second RAN Node obtains the first cell of the first RAN Node supporting the first RAT Type according to the user plane establishment request, and the specific implementation manner is the same as that in FIG. 3 .

S408. The second RAN Node sends an add request to the first RAN Node.

As an optional implementation, the second RAN Node sends an add request to the first RAN Node, where the request includes: a core network side tunnel identifier, where the core network tunnel identifier is used to indicate that the access network establishes the A session tunnel between a RAN Node and the core network.

As an optional implementation manner, the second RAN Node sends an add request to the first RAN Node, where the add request includes the first service type information, and the first RAN Node is the service corresponding to the first service type according to the first Service Type. Allocating network resources, or performing operations corresponding to the first service type, such as resource scheduling, traffic statistics, and the like.

S409. The first RAN Node sends a response to the second RAN Node.

S410. The second RAN Node performs RRC reconfiguration with the UE.

As an optional implementation manner, the second RAN Node performs RRC reconfiguration with the UE. In the RRC reconfiguration process, the second RAN Node transmits configuration information to the UE, for example, informing the UE to open a new radio (New radio, NR) The switch notifies the UE to do resource reservation.

S411. The UE completes the RRC reconfiguration process and sends an acknowledgement message to the second RAN Node.

S412. The second RAN Node notifies that the RRC reconfiguration of the first RAN Node and the UE is completed.

S413. The UE initiates a random access channel (RACH) access to the first RAN Node, and completes establishment of an air interface channel between the UE and the first node.

In the above step S413, the RACH is an uplink transmission channel, and the RACH is received in the entire cell, and is commonly used for PAGING answering and MS calling/login access.

S414. The first RAN Node sends a user plane setup response to the New Core, where the response is used to notify the New Core that the user plane setup is complete.

As an optional implementation manner, the first RAN Node sends a user plane setup response to the New Core, where the response is used to notify the New Core that the user plane establishment is complete, and the response includes: a tunnel identifier of the first RAN Node; Establishing a session tunnel between the first RAN Node and the core network according to the core network side tunnel identifier and the tunnel identifier of the first RAN Node.

S415. The New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed.

As an optional implementation manner, the New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed, and the first service type can be started between the New Core, the access network, and the UE. In the normal process, the uplink user plane data of the first service type is directly sent to the New Core through the first RAN Node, and the downlink user plane data is directly sent to the UE through the first RAN Node, without the relay of the second RAN Node.

In the method described in FIG. 4, when the UE initiates the service requirement of the first Service Type, the UE sends a PDN session establishment request carrying the first Service Type to the core network through the currently connected second RAN Node, and the core network establishes a request according to the PDN session. Determining a first RAT Type corresponding to the first service type, and sending a user plane setup request carrying the first RAT Type and the core network side tunnel identifier to the second RAN Node of the access network, where the second RAN Node is according to the first RAT The Type determines the first cell in the first RAN Node that can support the first RAT Type, and sends an add request to the first RAN Node and receives the response, and then the second RAN Node performs RRC reconfiguration with the UE, and sends the first cell identifier to the UE. After the RRC reconfiguration is completed, the air interface channel between the UE and the first RAN Node is established, and then the first RAN Node sends a user plane setup response to the New Core, and New sends a response to the UE to notify the UE that the PDN session establishment request has been carry out.

It can be seen that, in the embodiment of the present invention, the UE in the connected state can access the cells of different RAT types at the same time and obtain the service, which can avoid the interruption of the RAT type of the original connection, thereby causing the corresponding service interruption, and can improve the user experience. In the meantime, the method described in FIG. 4 can establish a session tunnel between the first RAN Node and the core network, and the uplink and downlink user plane data does not need to be transited by the second RAN Node.

Based on the embodiment of FIG. 2, please refer to FIG. 5. FIG. 5 is a method for selecting a wireless access technology type according to an embodiment of the present invention, which can perform detailed selection of the wireless access technology type selection method in FIG. Description. In the embodiment of the present invention, the method is applied to the technical scenario of the first RAT Type, where the first RAT Type and the second RAT Type are supported by the same RAN Node, and the first RAT Type corresponding to the first service type required by the user equipment is perceived by the core network. The selection method of the wireless access technology type includes but is not limited to the following steps:

S501. The UE is connected to a second cell in the RAN Node that supports the second RAT Type.

The definition and explanation of the second RAT Type in the above step S501 are the same as in FIG.

Optionally, the RAN Node in the foregoing step includes: at least one cell supporting the second RAT Type and at least one cell supporting the first RAT Type, where the second cell is any one of at least one cell supporting the second RAT Type. The first RAT Type may specifically be a 5G NR in the example of the present application.

As an optional implementation manner, the UE is connected to the second cell of the second RAT type, and the UE is connected to the second cell supporting the second RAT type, and is obtained from the second cell. The second Service Type service supported by the second RAT Type. The second service type may be any one of the service types provided by the second RAT type, and may be the Service Type 1 or the Service Type 2 provided by the eLTE in FIG. 2, and the second service type in FIG. 3 in the embodiment of the present invention. An exemplary description is made for Service Type 1 in FIG. 2. Of course, in practical applications, it can also be other Service Types provided by eLTE, not limited to this.

S502. The UE initiates a service requirement of the first Service Type.

The definition and explanation of the first Service Type in the above step S502 are the same as in FIG.

As an optional implementation manner, the UE initiates a service requirement of the first service type, and specifically, when the UE is connected to the second RAT Type, the UE starts an application (Application, APP) that requires the first Service Type.

S503. The UE sends an access layer message to the RAN Node, where the access layer message includes: a PDN session establishment request.

S504. The RAN Node sends a PDN session establishment request to the New Core.

S505. The New Core determines, according to the PDN session establishment request, a RAT Type corresponding to the first Service Type.

As an optional implementation manner, the New Core determines, according to the PDN session establishment request, the RAT Type corresponding to the first Service Type, including: the New Core queries the correspondence between the Service Type and the RAT Type according to the PDN session establishment request, and determines A first RAT Type corresponding to the first Service Type.

S506. The New Core sends a user plane establishment request to the RAN Node, where the request includes: second RAT type information.

The user plane establishment request in the above step S506 is used to establish a user plane, and the user plane is used to run the service data of the second Service Type. The user plane establishment request includes: first RAT Type information, where the first RAT Type information is used to indicate that the user plane establishment request needs to be established by using a RAT Type corresponding to the first Service Type.

As an optional implementation manner, the user plane establishment request includes a cause value, where the cause value is used to indicate that the second RAN Node needs to establish the user plane establishment request by using the first RAT Type. After the second RAN Node identifies the cause value, it can be determined that the user plane setup request needs to find another RAN Node capable of supporting the first RAT Type to support, but cannot establish itself.

As an optional implementation manner, the user plane establishment request includes a second service type information, where the information is used to indicate that the RAN Node allocates network resources according to the service type corresponding to the first service type according to the first service type, or performs the first The operation corresponding to the Service Type, for example, resource scheduling, traffic statistics, and so on.

S507. The RAN Node acquires a first cell that supports the first RAT Type.

As an optional implementation manner, the RAN Node acquires a first cell that supports the first radio access network technology type, and the specific implementation manner includes:

S508. The RAN Node initiates an RRC reconfiguration to the UE.

As an optional implementation manner, the RAN Node initiates an RRC reconfiguration to the UE. In the RRC reconfiguration process, the second cell transmits the first cell identifier to the UE.

As an optional implementation manner, the RAN Node initiates RRC reconfiguration to the UE. In the RRC reconfiguration process, the second cell transmits configuration information to the UE, for example, informing the UE to open a new radio (NR) switch, and notifying the UE. Do resource reservations, etc.

S509. The UE completes the RRC reconfiguration process and sends an acknowledgement message to the RAN Node.

S510. The UE initiates RACH access to the first cell according to the first cell identifier, and the UE completes the air interface with the first cell. The establishment of the Tao.

S511. The RAN Node sends a user plane setup response to the New Core, where the response is used to notify the New Core that the user plane is established.

S512. The New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed.

As an optional implementation manner, the New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed, and the first service type can be started between the New Core, the access network, and the UE. The normal business process.

In the method described in FIG. 5, the RAN Node may simultaneously provide the first RAT Type and the second RAT type, and when the UE connects to the second cell of the RAN Node supporting the second RAT type, the UE initiates a service requirement of the first Service Type, The core network receives the PDN session establishment request that is sent by the UE and carries the first service type, determines the first RAT type corresponding to the first service type, and sends a user plane setup request carrying the first RAT Type to the access network. The second cell to which the UE is connected, the RAN Node determines, according to the first RAT Type, the first cell in the second RAN Node that can support the first RAT Type, and then the RAN Node performs RRC reconfiguration with the UE, and sends the first cell identifier to the UE. After the RRC reconfiguration is completed, the air interface channel between the UE and the first cell is established, and then the RAN Node sends a user plane setup response to the New Core, and the New Core sends a response to the UE to notify the UE that the PDN session establishment request has been completed. It can be seen that, in the embodiment of the present invention, the UE in the connected state can access the cells of different RAT types at the same time and obtain the service, which can avoid the interruption of the RAT type of the original connection, thereby causing the corresponding service interruption and improving the user experience.

Based on the embodiment of FIG. 2, please refer to FIG. 6. FIG. 6 is another method for selecting a wireless access technology type according to an embodiment of the present invention, which can perform detailed selection of a wireless access technology type selection method in FIG. Description. In the embodiment of the present invention, the method is applied to a technology in which the first RAT Type and the second RAT Type are respectively supported by two different RAN Nodes, and the RAT Type corresponding to the Service Type of the user equipment requirement is perceived by the access network side. Scenario, the method includes but is not limited to the following steps:

S601. The UE is connected to a second RAN Node in the access network that supports the second RAT Type.

The definition and explanation of the second RAT Type and the second RAN Node in the above step S601 are the same as in FIG.

As an optional implementation manner, the UE is connected to the second RAN Node that supports the second RAT type in the access network, and specifically includes: the UE is connected to the second cell in the second RAN Node that supports the second RAT type, Obtaining a second Service Type service supported by the second RAT Type from the second cell. The definition and explanation of the second Service Type are the same as in FIG.

As an optional implementation manner, a specific implementation manner in which the UE selects and accesses the second RAT Type (ie, eLTE) is the same as that in FIG. 3.

S602. The UE initiates a service requirement of the first Service Type.

The first Service Type in the foregoing step S602 corresponds to the first RAT Type. In the example of the present application, the first RAT Type may be 5G NR, and the second Service Type may be any one of the Service Types provided by the 5G NR. Specifically, it may be Service Type 3 or Service Type 4 in FIG. 2, for example, 4K/8K high-definition video transmission service, VR/AR service, and the like. The embodiment of the present invention supports the first Service Type as 5G NR in FIG. The Service Type 3 is an exemplary description. Of course, in practical applications, the first Service Type can also be other Service Types provided by the 5G NR, not limited to this.

As an optional implementation manner, the UE initiates a service requirement of the second service type, and specifically, when the UE is connected to the second RAT Type, the UE synchronously starts an application (Application, APP) that requires the second service type.

S603. The UE sends an access layer message to the second RAN Node of the access network, where the access layer message includes: a first Service Type.

In the foregoing step S603, the access layer message includes two parts, one part is the first service type, the first service type can be identified by the RAN node, and the other part is a non-access stratum message, specifically, a PDN session establishment request, and the non-access stratum The message cannot be recognized by the RAN Node, and the RAN Node will forward it directly to New Core after receiving it.

S604. The second RAN Node determines a first RAT Type corresponding to the first Service Type.

As an optional implementation manner, the second RAN Node determines the first RAT type corresponding to the first service type, where the second RAN Node queries the correspondence table between the Service Type and the RAT Type according to the first Service Type, and determines The RAT Type first RAT Type corresponding to the first Service Type. In the embodiment of the present invention, the first RAT type may be a 5G NR. The actual RAT Type may also be another RAT type, which is not limited herein.

S605. The second RAN Node acquires a first cell of the first RAN Node that supports the first RAT Type.

The second RAN Node obtains the first cell that supports the first node of the first RAT type, and may refer to step 202. In this embodiment, the following describes an example: the second RAN Node queries the pre-configuration according to the user location and the first RAT Type. The RAT Type supported by the other RAN Nodes and the information of the corresponding cell acquires the first cell identifier of the first RAN Node that supports the first RAT Type. In this implementation manner, after acquiring the first cell, the second RAN Node performs the operation of step S606, that is, sends an add request to the first RAN Node, requesting to establish a connection with the first RAN Node, and jointly provide the user equipment with the first A Service Type business service.

S606. The second RAN Node sends an add request to the first RAN Node.

As an optional implementation manner, the second RAN Node sends an add request to the first RAN Node, where the add request includes the first service type information, and the RAN Node allocates a network according to the service type corresponding to the first service type. A resource, or an operation corresponding to the first Service Type, for example, resource scheduling, traffic statistics, and the like.

S607. The first RAN Node sends a response to the second RAN Node.

S608. The second RAN Node performs RRC reconfiguration with the UE.

As an optional implementation manner, the second RAN Node performs RRC reconfiguration with the UE. In the RRC reconfiguration process, the second RAN Node transmits configuration information to the UE, for example, informing the UE to open the NR switch, and notifying the UE to make resources. Reserved and so on.

S609. The UE completes the RRC reconfiguration process and sends an acknowledgement message to the second RAN Node.

S610. The second RAN Node notifies that the RRC reconfiguration of the first RAN Node and the UE is completed.

S611. The UE initiates a random access channel (RACH) access to the first RAN Node, and completes establishment of an air interface channel between the UE and the first RAN Node.

In the above step S613, the RACH is an uplink transmission channel, and the RACH is received in the entire cell, and is commonly used for PAGING reply and MS call/login access.

S612. The second RAN Node forwards, to the New Core, a PDN session establishment request in the access layer message, where the PDN session establishment request is used to establish a user plane for the service requirement of the first Service Type of the user equipment.

S613. The New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed.

In the method described in FIG. 6, when the UE connects to the second RAN Node supporting the second RAT type, the UE initiates a service requirement of the first Service Type, and sends an access layer message to the second RAN Node, where the access layer message includes a first service type, the access layer determines a first RAT type corresponding to the service type, and determines, according to the energy and topology of the neighboring RAN Node, the first cell of the first RAN Node supporting the first RAT Type, and adds the first A RAN Node is configured to serve the UE in common, and then the second RAN Node and the UE perform RRC reconfiguration, send a first cell identifier to the UE, the UE establishes an air interface connection with the first cell, and then the second RAN Node forwards the PDN session to the New Core. The request is established, and the UE, the second RAN Node, and the New Core complete the user plane establishment. It can be seen that, in the embodiment of the present invention, the UE in the connected state can access the cells of different RAT types at the same time and obtain the service, which can avoid the interruption of the RAT type of the original connection, thereby causing the corresponding service interruption and improving the user experience.

Based on the embodiment of FIG. 2, please refer to FIG. 7. FIG. 7 is another method for selecting a wireless access technology type according to an embodiment of the present invention, which can perform detailed selection of a wireless access technology type selection method in FIG. Description. In the embodiment of the present invention, the method shown in FIG. 7 is applied to the first RAT Type and the second RAT Type supported by the same RAN Node, and the access network side senses the first service type corresponding to the user equipment requirement. A RAT Type technical scenario, the method for selecting the type of the wireless access technology includes but is not limited to the following steps:

S701. The UE is connected to a second cell in the RAN Node that supports the second RAT Type.

The definition and explanation of the second RAT Type in the above step S701 are the same as in FIG.

Optionally, the foregoing step RAN Node includes: at least one cell supporting the second RAT Type and at least one cell supporting the first RAT Type, where the second cell is any one of at least one cell supporting the second RAT Type. The first RAT Type may specifically be a 5G NR in the example of the present application.

As an optional implementation, the second cell connected to the second RAT type is connected to the second cell of the RAN Node, and the UE is connected to the second cell supporting the second RAT type in the RAN Node, and the second cell is connected to the second cell. Obtain a second Service Type service supported by the second RAT Type. The second service type may be any one of the service types provided by the second RAT type, and may be the Service Type 1 or the Service Type 2 provided by the eLTE in FIG. 2, and the second service type in the embodiment of the present invention is as shown in FIG. Service Type 1 is an example. Of course, in actual applications, it may also be other Service Types provided by the second RAT Type, and not limited to this.

S702. The UE initiates a service requirement of the first Service Type.

The definition and explanation of the first Service Type in the above step S702 are the same as in FIG.

S703. The UE sends an access layer message to the RAN Node, where the access layer message includes: a first Service Type.

The access layer message in the foregoing step S703 includes two parts, one part is the first service type, the first service type can be identified by the RAN node, and the other part is a non-access stratum message, which can be a PDN session establishment request, and a non-access stratum. The message cannot be recognized by the RAN Node, and the RAN Node will forward it directly to New Core after receiving it.

S704. The RAN Node acquires a first RAT Type corresponding to the first Service Type.

As an optional implementation manner, the RAN Node obtains the first RAT type corresponding to the first service type, and the RAN node queries the correspondence between the Service Type and the RAT Type according to the first Service Type, and determines the first relationship. RAT Type First RAT Type corresponding to the Service Type. In the embodiment of the present invention, the first RAT type may be a 5G NR. The actual RAT Type may also be another RAT type, which is not limited herein.

S705. The RAN Node acquires a first cell that supports the first RAT Type.

As an optional implementation manner, the RAN Node obtains the first cell that supports the first RAT Type, and the specific implementation manner includes:

S706. The RAN Node initiates an RRC reconfiguration to the UE.

As an optional implementation manner, the RAN Node initiates RRC reconfiguration to the UE. In the RRC reconfiguration process, the RAN Node delivers the first cell identity information to the UE.

As an optional implementation manner, the RAN Node initiates RRC reconfiguration to the UE, in the RRC reconfiguration process, The RAN Node transmits the configuration information to the UE, for example, notifying the UE to open the NR switch, notifying the UE to perform resource reservation, and the like.

S707. The UE completes the RRC reconfiguration process and sends an acknowledgement message to the RAN Node.

S708. The UE initiates RACH access to the first cell according to the first cell identifier, and the UE completes the establishment of the air interface channel with the first cell.

S709. The RAN Node forwards the PDN session establishment request in the access layer to the New Core, where the PDN session establishment request is used to establish a user plane for the service requirement of the first Service Type of the user equipment.

S710. The New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed.

As an optional implementation manner, the New Core sends a response message to the UE, where the response message is used to notify the UE that the PDN session establishment request has been completed, and the first service type can be started between the New Core, the access network, and the UE. In the normal business process, the user plane data is aggregated to the RAN Node and then to the New Core through carrier aggregation, and the downlink user plane data is sent to the UE through the RAN Node.

In the method described in FIG. 7, when the UE connects to the second cell of the RAN Node supporting the second RAT type, the UE initiates a service requirement of the first Service Type, and sends an access layer message to the RAN Node, where the access layer message includes a first service type and a PDN session establishment request, the access layer determines a first RAT type corresponding to the service type, and the RAN Node determines, according to the first RAT Type, a first cell in the second RAN Node that can support the first RAT Type, and then The RAN Node performs RRC reconfiguration with the UE, and sends a first cell identifier to the UE. After the RRC reconfiguration is completed, the air interface channel between the UE and the first cell is established, and the PDN session establishment request is forwarded to the New Core to establish the UE. User plane between RAN Node and New Core. It can be seen that, in the embodiment of the present invention, the UE in the connected state can access the cells of different RAT types at the same time and obtain the service, which can avoid the interruption of the RAT type of the original connection, thereby causing the corresponding service interruption and improving the user experience.

FIG. 8 is a schematic diagram showing a possible structure of a radio access technology type selecting apparatus, which can implement the selection of the radio access technology type shown in FIG. 2 to FIG. The function of the access network node or the second access network node in the method.

Referring to FIG. 8, the line access technology type selection device 800 includes: a receiving unit 801, a first obtaining unit 802, a second obtaining unit 803, a sending unit 804, and a processing unit 805, wherein the units can perform the above method. The corresponding function in the example, for example, the receiving unit 801 is configured to receive a first service type required by the user equipment; the first obtaining unit 802 is configured to acquire a first radio access technology type, where the first radio access technology type is used. a first service type that supports a user equipment requirement; a second acquisition order 803, configured to acquire a first cell that supports the first radio access technology type; and a sending unit 804, configured to send a first cell identifier to the user equipment The first cell identifier is used to indicate that the user equipment accesses the first cell according to the first cell identifier.

Optionally, the first obtaining unit 802 is specifically configured to: forward the first service type to the core network; and receive the first wireless access technology type that is sent by the core network according to the first service type.

Optionally, the receiving unit 801 is configured to receive an access layer message that is sent by the user equipment, where the access layer message includes: a packet data network PDN session establishment request that carries the first service type;

The first obtaining unit 802 is configured to forward the PDN session establishment request that carries the first service type to a core network, and receive a user plane establishment request sent by the core network, where the user plane establishment request includes The core The network accesses the first radio access technology type from the user plane establishment request according to the first radio access technology type obtained by the first service type.

Optionally, the receiving unit 801 is specifically configured to: receive an access layer message that is sent by the user equipment and that carries the first service type.

Optionally, the second obtaining unit 803 is specifically configured to: acquire a type of the radio access technology supported by the other access network node; and according to the user location, the first access technology type and the other access network node Determining, by the type of the radio access technology, the first access network node supporting the first radio access technology type; acquiring the cell in the first access network node supporting the first access technology type as The first cell.

Optionally, the sending unit 804 is further configured to send the first radio access technology type to the first access network node, request to establish a connection with the first access network node, and jointly The user equipment provides the service of the first radio access technology type.

Optionally, the receiving unit 801 is further configured to receive a tunnel identifier that is allocated by the core network, where the sending unit 804 is further configured to send, to the first access network node, a tunnel identifier that is allocated by the core network; The receiving unit 801 is further configured to receive a tunnel identifier that is allocated by the first access network node, and the sending unit 804 is further configured to send, to the core network, a tunnel identifier that is allocated by the first access network node.

Optionally, the second obtaining unit 803 is further configured to: determine, according to a configuration of a radio access technology type, the first cell from a cell that supports the first radio node access technology type.

Optionally, the user establishment request includes: the first service type, the device further includes: a processing unit 805, configured to allocate, according to the first service type, a network resource for a service corresponding to the first service type. .

Optionally, the user setup request includes: a first cause value, where the first cause value is used to indicate that the user plane setup request needs to be established by using a corresponding first radio access technology type, where the apparatus further includes The processing unit 805 is configured to determine, according to the cause value, a step of performing acquiring the first cell that supports the first radio access network technology type.

Optionally, the sending unit 804 is specifically configured to: initiate an RRC reconfiguration process to the user equipment, where the access network node sends the first cell identifier to the user equipment in an RRC reconfiguration process.

FIG. 9 is a schematic diagram showing a possible structure of a wireless access technology type selection device, which can implement the wireless access technology type shown in FIG. 2 to FIG. The function of the first access network node in the selection method.

Referring to FIG. 9, the line access technology type selection device 900 includes: a receiving unit 901, configured to receive a request sent by a second access network node, where the request includes a first type of radio access technology; and a connection unit 902 And the receiving unit 901 is further configured to receive an access request sent by the user equipment by using the first radio access technology type, where the access request carries the first cell. And an establishing unit 903, configured to establish an air interface channel between the first cell and the user equipment.

Optionally, the line access technology type selection device 900 further includes: a determining unit 904, configured to determine the first cell according to the first radio access technology type; and a sending unit 905, configured to The second access network node sends the first cell identifier.

Optionally, the line access technology type selection device 900 further includes: the receiving unit 901, and is further configured to receive a core network side tunnel identifier sent by the second access network node; the sending unit 905 is further configured to send, to the second access network node or the core network, a tunnel identifier of the first access network node, where the core network The side tunnel identifier and the tunnel identifier of the first access network node are used to establish a session tunnel between the first access network node and the core network.

It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner. Each functional unit in the embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. For example, in the above embodiment, the first obtaining unit and the second obtaining unit may be the same unit and different units. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

FIG. 10 shows another possible structural diagram of the access network node involved in the foregoing embodiment, and the access network node 1000 can also implement the same as shown in FIG. 2 to FIG. 7 . The function of the access network node.

The access network node 1000 includes a processing unit 1002 and a communication unit 1003. The processing unit 1002 is configured to perform control management on the actions of the access network node, for example, the processing unit 1002 is configured to support any of the steps described in FIG. 2 to FIG. 7 of the access network node, and/or used for the description herein. Other processes of technology. The communication unit 903 is configured to support communication of the access network node with other network entities, such as communication with the user equipment, the access network node, and the core network illustrated in Figures 2-7. The access network node may further include a storage unit 1001 for storing program codes and data of the access network node.

The processing unit 1002 may be a processor or a controller, such as a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. Communication unit 1003 can be a transceiver. The storage unit 1001 may be a memory.

When the processing unit 1002 is a processor, the communication unit 1003 is a transceiver, and the storage unit 1001 is a memory, the access network node involved in the embodiment of the present invention may be the access network node shown in FIG. 2 to FIG.

Referring to FIG. 11, the access network node includes a processor 1102, a transceiver 1103, a memory 1101, and a bus 1104. The transceiver 1103, the processor 1102, and the memory 1101 are connected to each other through a bus 1104. The bus 1104 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA). ) Bus, etc. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 11, but it does not mean that there is only one bus or one type of bus.

The steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions. The software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM, EPROM), Electrically Erasable Programmable Read Only Memory (EEPROM), Register, Hard Disk, Mobile Hard Disk, Only A compact disc (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a core network interface device. Of course, the processor and the storage medium may also exist as discrete components in the core network interface device.

Those skilled in the art will appreciate that in one or more examples described above, the functions described herein can be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. The scope of the protection, any modifications, equivalent substitutions, improvements, etc., which are made on the basis of the technical solutions of the present invention, are included in the scope of the present invention.

Claims

A method for selecting a type of wireless access technology, comprising:

The access network node receives the first service type required by the user equipment, and acquires a first type of radio access technology, where the first radio access technology type is used to support a first service type required by the user equipment;

Obtaining, by the access network node, a first cell that supports the first radio access technology type;

The access network node sends a first cell identifier to the user equipment, where the first cell identifier is used to indicate that the user equipment accesses the first cell according to the first cell identifier.
The method according to claim 1, wherein the access network node receives the first service type required by the user equipment, and obtaining the first radio access technology type acquisition comprises:

Receiving, by the access network node, a first service type required by the user equipment;

Transmitting, by the access network node, the first service type to a core network;

The access network node receives a first radio access technology type that is sent by the core network according to the first service type.
The method of claim 2 wherein:

Receiving, by the access network node, the first service type that is required by the user equipment, the access network node receiving the access layer message sent by the user equipment, where the access layer message includes: carrying the first service type Packet data network PDN session establishment request;

The forwarding, by the access network node, the first service type to the core network, includes: the access network forwarding, to the core network, the PDN session establishment request that carries the first service type;

Receiving, by the access network node, the first radio access technology type that is sent by the core network according to the first service type, where the access network receives a user plane establishment request sent by the core network, where the user plane The establishing request includes the first radio access technology type obtained by the core network according to the first service type, and the access network node acquires the first radio access technology type from the user plane establishment request .
The method according to claim 1, wherein the access network node receives the first service type required by the user equipment, and the acquiring the first radio access technology type comprises:

Receiving, by the access network node, a first service type required by the user equipment;

The access network node searches for the corresponding relationship between the service type and the radio access technology type according to the first service type, and obtains the first radio access technology type corresponding to the first service type.
The method according to claim 4, wherein the first service type that the access network node receives the user equipment requirement comprises:

The access network node receives an access layer message that is sent by the user equipment and carries the first service type.
The method according to any one of claims 1 to 5, wherein the access network node acquires the support The first cell of the first radio access network technology type includes:

The access network node acquires a type of radio access technology supported by other access network nodes;

The access network node determines, according to the user location, the first access technology type, and the type of radio access technology supported by the other access network nodes, to support the first connection of the first radio access technology type. Incoming network node;

The access network node acquires, as the first cell, a cell that supports the first access technology type in the first access network node.
The method of claim 6 wherein the method further comprises:

Sending, by the access network node, the first type of radio access technology to the first access network node, requesting to establish a connection with the first access network node, and jointly providing the first Wireless access technology type of service.
The method of claim 6 wherein the method further comprises:

The access network node receives a tunnel identifier allocated by the core network;

Transmitting, by the access network node, the tunnel identifier allocated by the core network to the first access network node;

Receiving, by the access network node, a tunnel identifier allocated by the first access network node;

The access network node sends the tunnel identifier allocated by the first access network node to the core network.
The method according to any one of claims 1-5, wherein the obtaining, by the access network, the first cell supporting the first radio access network technology type comprises:

The access network node determines the first cell from a cell that supports the first radio access technology type according to a configuration of a radio access technology type.
The method according to any one of claims 1 to 7, wherein the user establishment request comprises: the first service type, and the method comprises:

The access network node allocates network resources to services corresponding to the first service type according to the first service type.
The method according to any one of claims 3-6, wherein the user establishment request comprises: a first cause value, wherein the first cause value is used to indicate that the user plane establishment request needs to use a corresponding The first type of wireless access technology is established, and the method further includes:

And determining, by the access network node, the step of acquiring the first cell that supports the first radio access network technology type according to the cause value.
The method according to any one of claims 1-10, wherein the sending, by the access network node, the first cell identifier to the user equipment comprises:

The access network node initiates an RRC reconfiguration process to the user equipment. In the RRC reconfiguration process, the access network node sends the first cell identifier to the user equipment.
A method for selecting a type of wireless access technology, comprising:

Receiving, by the first access network node, a request sent by the second access network node, where the request includes a first type of radio access technology;

Establishing a connection between the first access network node and the second access network node;

Receiving, by the first access network node, an access request sent by the user equipment by using the first radio access technology type, where the access request carries the first cell identifier;

The first access network node establishes an air interface channel between the first cell and the user equipment.
The method of claim 13 wherein the method further comprises:

Determining, by the first access network node, the first cell according to the first type of radio access technology;

The first access network node sends the first cell identifier to the second access network node.
The method of claim 13 or 14, further comprising:

Receiving, by the first access network node, a core network side tunnel identifier sent by the second access network node;

And the first access network node sends the tunnel identifier of the first access network node to the second access network node or the core network, where the core network side tunnel identifier and the tunnel of the first access network node The identifier is used to establish a session tunnel between the first access network node and the core network.
An access network node, comprising: a processing unit and a communication unit:

The communication unit is configured to receive a first service type required by the user equipment;

The processing unit is configured to acquire a first radio access technology type, where the first radio access technology type is used to support a first service type required by the user equipment, and is further configured to obtain and support the first radio access technology. The first cell of the type;

The communication unit is configured to send a first cell identifier to the user equipment, where the first cell identifier is used to indicate that the user equipment accesses the first cell according to the first cell identifier.
The access network node according to claim 16, wherein the communication unit is specifically configured to:

Forwarding the first service type to the core network;

Receiving, by the core network, a first type of radio access technology sent according to the first service type.
The access network node of claim 17 wherein:

The communication unit is specifically configured to: receive an access layer message sent by the user equipment, where the access layer message includes: a packet data network PDN session establishment request carrying the first service type; forwarding the Receiving the PDN session establishment request of the first service type, and receiving a user plane establishment request sent by the core network, where the user plane establishment request includes the first part obtained by the core network according to the first service type a type of wireless access technology;

The processing unit is specifically configured to: acquire the first type of radio access technology from the user plane establishment request.
The access network node of claim 16 wherein:

The communication unit is specifically configured to: receive a first service type required by the user equipment;

The processing unit is specifically configured to: according to the first service type of the receiving unit, query a correspondence between a service type and a wireless access technology type, and acquire the first wireless connection corresponding to the first service type. Enter the type of technology.
The access network node according to claim 19, wherein the communication unit is specifically configured to:

Receiving, by the user equipment, an access stratum message carrying the first service type.
The access network node according to any one of claims 16 to 20, wherein the processing unit is specifically configured to:

Obtaining the types of wireless access technologies supported by other access network nodes;

Determining, according to the user location, the first access technology type and the type of radio access technology supported by the other access network node, the first access network node supporting the first radio access technology type;

Obtaining, in the first access network node, a cell supporting the first access technology type as the first cell.
The access network node according to claim 21, wherein the communication unit is further configured to:

Transmitting the first type of radio access technology to the first access network node, requesting to establish a connection with the first access network node, and jointly providing the user equipment with the first radio access technology type service.
The access network node according to claim 21, wherein the communication unit is further configured to:

Receiving a tunnel identifier assigned by the core network;

Transmitting, to the first access network node, a tunnel identifier allocated by the core network;

Receiving a tunnel identifier assigned by the first access network node;

Transmitting, to the core network, a tunnel identifier allocated by the first access network node.
The access network node according to any one of claims 16 to 20, wherein the processing unit is further configured to:

According to the configuration of the radio access technology type, the first cell is determined from a cell that supports the first radio access technology type.
The access network node according to any one of claims 16-22, wherein the user establishment request comprises: the first service type, and the processing unit is further configured to: according to the first The service type allocates network resources for the service corresponding to the first service type.
The access network node according to any one of claims 19 to 21, wherein the user establishment request comprises: a first cause value, wherein the first cause value is used to indicate the user plane establishment request The processing unit is further configured to: determine, according to the cause value, the step of performing acquiring the first cell supporting the first radio access network technology type according to the cause value .
The access network node according to any one of claims 16 to 26, wherein the communication unit is specific Used for:

Initiating an RRC reconfiguration process to the user equipment, in the RRC reconfiguration process, the access network node sends the first cell identifier to the user equipment.
An access network node, comprising: a processing unit and a communication unit:

The communication unit is configured to receive a request sent by a second access network node, where the request includes a first type of radio access technology;

The processing unit is configured to establish a connection with the second access network node;

The communication unit is further configured to receive an access request sent by the user equipment by using a first radio access technology type, where the access request carries a first cell identifier;

The communication unit is further configured to establish an air interface channel between the first cell and the user equipment.
The access network node of claim 28, wherein

The processing unit is configured to determine the first cell according to the first type of radio access technology;

The communication unit is configured to send the first cell identifier to the second access network node.
An access network node according to claim 28 or 29, characterized in that

The communication unit is further configured to receive a core network side tunnel identifier sent by the second access network node, and send a tunnel identifier of the first access network node to the second access network node or the core network, where the core network The side tunnel identifier and the tunnel identifier of the first access network node are used to establish a session tunnel between the first access network node and the core network.