CN110351889B

CN110351889B - Connection establishing method and equipment

Info

Publication number: CN110351889B
Application number: CN201810291464.0A
Authority: CN
Inventors: 金巴
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-04-03
Filing date: 2018-04-03
Publication date: 2022-02-01
Anticipated expiration: 2038-04-03
Also published as: CN110351889A

Abstract

The embodiment of the application provides a connection establishment method and equipment, relates to the technical field of communication, and aims to solve the problem that the connection between an MN and an SN cannot be established through the existing method in a DC network. The method comprises the following steps: acquiring an identifier of second access network equipment, wherein the second access network equipment is access network equipment to be connected with the first access network equipment; sending a first connection request message to the second access network device according to the identifier of the second access network device, wherein the first connection request message is used for requesting to establish connection with the second access network device; and receiving a first connection response message sent by the second access network device, wherein the first connection response message is used for confirming the establishment of the connection with the first access network device. The embodiment of the application is used for establishing the connection between the MN and the SN.

Description

Connection establishing method and equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a connection establishment method and device.

Background

The introduction of carrier aggregation enables one terminal device to simultaneously receive and transmit data on a plurality of carriers, and the theoretical peak downloading speed of the terminal device is greatly improved due to the development of a multi-antenna technology. A typical carrier aggregation scheme is to connect a macro cell and one or more small cells together via an Ideal Backhaul (Ideal Backhaul). The frequency spectrum configured on the small cell is fast in signal attenuation along with the increase of the distance, so that the coverage area of a single cell is very limited, and if carrier aggregation is to be provided in a large range, a large number of small base stations are required to be configured; with the development of high frequency technology, such networks are gradually developed into high density multilayer networks. The high-density multi-layer network has a very high requirement for the backward Backhaul between the base stations, and the numerous backward backhauls also consume a large amount of labor and material costs, so that a Dual Connectivity (DC) technology established on the basis of the Non-ideal backward Backhaul has been promoted.

The DC technique is carrier aggregation under a non-ideal backhaul, and particularly means that one terminal device can be connected to two base stations for data communication through the non-ideal backhaul at the same time. Typical architectures for DC technology include: a Mobility Management Entity (MME), a Master base station (MN), a Secondary base Station (SN), and a terminal device. The MN and the SN are connected through an X2 interface, the MN and the MME are connected through an S1 interface, and the SN and the MME are not connected or only establish user plane connection. That is, in the network architecture of the DC technology, there is no control plane interface between the SN and the MME, so in the process of constructing the DC network, the connection between the MN and the SN cannot be established by the existing method, and the MN and the SN cannot implement the DC without establishing the X2 connection.

Disclosure of Invention

The embodiment of the application provides a connection establishment method and equipment, which are used for solving the problem that the connection between MN and SN cannot be established through the existing method in a DC network.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a connection establishment method, which is applied to a first access network device, and the method includes:

acquiring an identifier of second access network equipment, wherein the second access network equipment is access network equipment to be connected with the first access network equipment;

sending a first connection request message to the second access network device according to the identifier of the second access network device, wherein the first connection request message is used for requesting to establish connection with the second access network device;

and receiving a first connection response message sent by the second access network device, wherein the first connection response message is used for confirming the establishment of the connection with the first access network device.

In a second aspect, an embodiment of the present application provides a connection establishment method, which is applied to a second access network device, and the method includes:

receiving a first connection request message sent by first access network equipment, wherein the first connection request message is used for requesting to establish connection with second access network equipment;

and sending a first connection response message to the first access network device, wherein the first connection response message is used for confirming the establishment of the connection with the first access network device.

In a third aspect, an embodiment of the present application provides a connection establishment method, which is applied to a core network device, and the method includes:

receiving a second connection request message sent by the first access network equipment; the second connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a user plane connection with the second access network device;

sending a third connection request message to the second access network equipment according to the identifier of the second access network equipment; the third request message is used for requesting to establish user plane connection with the second access network equipment;

and receiving a third connection response message sent by the second access network device, where the third connection response message is used to confirm establishment of a user plane connection with the core network device.

In a fourth aspect, an embodiment of the present application provides a connection establishment method, which is applied to a terminal device, and the method includes:

receiving indication information sent by first access network equipment, wherein the indication information is used for indicating the terminal equipment to report a measurement report of a first cell, the first cell is a cell providing service for second access network equipment, and the second access network equipment is access network equipment to be connected with the first access network equipment;

acquiring a measurement report of the first cell; the measurement report of the first cell includes an identification of the second access network device;

sending a measurement report of the first cell to the first access network device.

In the connection establishing method provided in the foregoing embodiment, after acquiring the identifier of the second access network device, the first access network device first sends a first connection request message to the second access network device according to the identifier of the second access network device, and then receives a first connection response message sent by the second access network device, so as to establish connection with the second access network device.

In a fifth aspect, an embodiment of the present application provides a connection establishment method, which is applied to a first access network device, and the method includes:

sending a first connection request message to core network equipment; the first connection request message includes an identifier of the second access network device, and is used for requesting the core network device to establish a control plane connection with the second access network device;

receiving a first connection response message sent by the core network device, where the first connection response message is used to indicate that the core network device and the second access network device have established a control plane connection;

sending a second connection request message to the second access network device through the core network device, where the second connection request message is used to request to establish a connection with the second access network device;

and receiving, by the core network device, a second connection response message sent by the second access network device, where the second connection response message is used to confirm that a connection is established with the first access network device.

In a sixth aspect, an embodiment of the present application provides a connection establishment method, which is applied to a core network device, and the method includes:

receiving a first connection request message sent by first access network equipment; the first connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a control plane connection with the second access network device;

sending a third connection request to the second access network device according to the identifier of the second access network device, where the third connection request message is used to request establishment of a control plane connection with the second access network device;

receiving a third connection response message sent by the second access network device, where the third connection response message is used to confirm establishment of a control plane connection with the second access network device;

sending a first connection response message to the first access network device, where the first connection response message is used to indicate that the core network device has established a control panel connection with the second access network device;

forwarding a second connection request message sent by the first access network device to the second access network device; the second connection request message is used for requesting to establish connection with the second access network equipment;

forwarding a second connection response message sent by the second access network device to the first access network device; the connection second response message is used to confirm the establishment of the connection with the first access network device.

In a seventh aspect, an embodiment of the present application provides a connection establishment method, which is applied to a second access network device, and the method includes:

receiving a third connection request message sent by core network equipment, wherein the third connection request message is used for requesting to establish control plane connection with the core network equipment;

sending a third connection response message to the core network device, where the third connection response message is used to confirm establishment of a control plane connection with the core network device;

receiving a second connection request message sent by first access network equipment through the core network; the second connection request message is used for requesting to establish connection with the second access network equipment;

sending a second connection response message to the first access network equipment through the core network; the connection second response message is used to confirm the establishment of the connection with the first access network device.

In the connection establishing method provided in the foregoing embodiment, after acquiring the identifier of the second access network device, the first access network device first sends a first connection request message to the core network device, and then receives a first connection response message sent by the core network device, so that the core network device establishes a control plane connection with the second access network device, and then sends a second connection request message to the second access network device through the core network device, and receives a second connection response message sent by the second access network device through the core network device, so as to establish a connection with the second access network device, because the first access network device first establishes a control plane connection between the core network device and the second access network device before establishing a connection with the second access network device, the connection establishing method provided in the foregoing embodiment can establish a connection between the first access network device and the second access network device through the core network device, the problem that the connection between the MN and the SN cannot be established through the existing method in the DC network is solved.

In the process of establishing understanding between the first access network device and the second access network device, the control plane connection between the second access network device and the core network device is avoided, so the embodiment can solve the problem that the connection between the MN and the SN cannot be established in the DC network by the existing method.

In an eighth aspect, an embodiment of the present application provides an access network device, including:

an obtaining unit, configured to obtain an identifier of a second access network device, where the second access network device is an access network device to be connected to the access network device;

a sending unit, configured to send a first connection request message to the second access network device according to the identifier of the second access network device, where the first connection request message is used to request to establish a connection with the second access network device;

a receiving unit, configured to receive a first connection response message sent by the second access network device, where the first connection response message is used to confirm that a connection is established with the access network device.

In a ninth aspect, an embodiment of the present application provides an access network device, including:

a receiving unit, configured to receive a first connection request message sent by a first access network device, where the first connection request message is used to request to establish a connection with the access network device;

a sending unit, configured to send a first connection response message to the first access network device, where the first connection response message is used to confirm that a connection is established with the first access network device.

In a tenth aspect, an embodiment of the present application provides a core network device, including:

a receiving unit, configured to receive a second connection request message sent by a first access network device; the second connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a user plane connection with the second access network device;

a sending unit, configured to send a third connection request message to the second access network device according to the identifier of the second access network device; the third request message is used for requesting to establish user plane connection with the second access network equipment;

the receiving unit is further configured to receive a third connection response message sent by the second access network device, where the third connection response message is used to confirm establishment of a user plane connection with the core network device.

In an eleventh aspect, an embodiment of the present application provides a terminal device, including:

a receiving unit, configured to receive indication information sent by a first access network device, where the indication information is used to indicate that a terminal device reports a measurement report of a first cell, the first cell is a cell that provides a service for a second access network device, and the second access network device is an access network device that is to establish a connection with the first access network device;

an obtaining unit, configured to obtain a measurement report of the first cell; the measurement report of the first cell includes an identification of the second access network device;

a sending unit, configured to send a measurement report of the first cell to the first access network device.

In a twelfth aspect, an embodiment of the present application provides an access network device, including:

an obtaining unit, configured to obtain an identifier of a second access network device, where the second access network device is an access network device to establish a connection with the first access network device;

a sending unit, configured to send a first connection request message to a core network device; the first connection request message includes an identifier of the second access network device, and is used for requesting the core network device to establish a control plane connection with the second access network device;

a receiving unit, configured to receive a first connection response message sent by the core network device, where the first connection response message is used to indicate that the core network device and the second access network device have established a control plane connection;

the sending unit is further configured to send a second connection request message to the second access network device through the core network device, where the second connection request message is used to request to establish a connection with the second access network device;

the receiving unit is further configured to receive, by the core network device, a second connection response message sent by the second access network device, where the second connection response message is used to confirm that a connection is established with the access network device.

In a thirteenth aspect, an embodiment of the present application provides a core network device, including: a receiving unit, configured to receive a first connection request message sent by a first access network device; the first connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a control plane connection with the second access network device;

a sending unit, configured to send a third connection request to the second access network device according to the identifier of the second access network device, where the third connection request message is used to request establishment of a control plane connection with the second access network device;

the receiving unit is further configured to receive a third connection response message sent by the second access network device, where the third connection response message is used to confirm establishment of a control plane connection with the second access network device;

the sending unit is further configured to send a first connection response message to the first access network device, where the first connection response message is used to indicate that the core network device has established a control panel connection with the second access network device;

the sending unit is further configured to forward a second connection request message sent by the first access network device to the second access network device, and forward a second connection response message sent by the second access network device to the first access network device; the second connection request message is used for requesting to establish connection with the second access network equipment; the connection second response message is used to confirm the establishment of the connection with the first access network device.

In a fourteenth aspect, an embodiment of the present application provides an access network device, including:

a receiving unit, configured to receive a third connection request message sent by a core network device, where the third connection request message is used to request a control plane connection to be established with the core network device;

a sending unit, configured to send a third connection response message to the core network device, where the third connection response message is used to confirm establishment of a control plane connection with the core network device;

the receiving unit is further configured to receive, through the core network, a second connection request message sent by the first access network device; the second connection request message is used for requesting to establish connection with the second access network equipment;

the sending unit is further configured to send a second connection response message to the first access network device through the core network; the connection second response message is used to confirm the establishment of the connection with the first access network device.

In a fifteenth aspect, an embodiment of the present application provides an access network device, including: a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the connection establishment method according to any one of the first, second, fifth and seventh aspects.

In a sixteenth aspect, an embodiment of the present application provides a core network device, including: a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the connection establishment method of any one of the third and sixth aspects.

In a seventeenth aspect, an embodiment of the present application provides a terminal device, including: a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the connection establishment method according to the fourth aspect.

In an eighteenth aspect, embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the connection establishment method according to any one of the first to seventh aspects.

Drawings

Fig. 1 is a schematic diagram of a possible structure of a communication system according to an embodiment of the present application;

fig. 2 is a flowchart of a connection establishment method according to an embodiment of the present application;

fig. 3 is a second step diagram of a connection establishment method according to an embodiment of the present application;

fig. 4 is a third step diagram of a connection establishment method according to an embodiment of the present application;

fig. 5 is a fourth step diagram of a connection establishment method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an access network device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of another access network device provided in the embodiment of the present application;

fig. 8 is a schematic structural diagram of a core network device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

fig. 10 is a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present application;

fig. 11 is a schematic hardware structure diagram of an access network device according to an embodiment of the present application;

fig. 12 is a schematic hardware structure diagram of a core network device according to an embodiment of the present application;

fig. 13 is a second schematic diagram of a hardware structure of a terminal device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division". The term "plurality" herein means two or more, unless otherwise specified.

For the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, the terms "first" and "second" are used to distinguish the same items or similar items with basically the same functions or actions, and those skilled in the art can understand that the terms "first" and "second" are not limited to the quantity and execution order.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion. In the embodiments of the present application, the meaning of "a plurality" means two or more unless otherwise specified.

The DC technique is carrier aggregation under a non-ideal backhaul, and particularly means that one terminal device can be connected to two base stations for data communication through the non-ideal backhaul at the same time. Typical architectures for DC technology include: MME, a main base station (MN), a secondary base Station (SN) and a terminal device. The MN and the SN are connected through an X2 interface, the MN and the MME are connected through an S1 interface, and the SN and the MME are not connected or only establish user plane connection. That is, in the network architecture of the DC technology, there is no control plane interface between the SN and the MME, so in the process of constructing the DC network, the connection between the MN and the SN cannot be established by the existing method, and the MN and the SN cannot implement the DC without establishing the X2 connection.

In order to solve the above problem, the embodiment of the present application provides the following two technical solutions:

in the scheme 1, after acquiring the identifier of the second access network device, the first access network device first sends a first connection request message to the second access network device according to the identifier of the second access network device, and then receives a first connection response message sent by the second access network device, so as to establish connection with the second access network device.

In scheme 2, after acquiring the identifier of the second access network device, the first access network device first sends a first connection request message to the core network device, and then receives a first connection response message sent by the core network device, so that the core network device establishes a control plane connection with the second access network device, and then sends a second connection request message to the second access network device through the core network device, and receives a second connection response message sent by the second access network device through the core network device, so as to establish a connection with the second access network device, because the first access network device first establishes a control plane connection between the core network device and the second access network device before establishing a connection with the second access network device, the connection establishment method provided in the above embodiment can establish a connection between the first access network device and the second access network device through the core network device, the problem that the connection between the MN and the SN cannot be established through the existing method in the DC network is solved.

The technical scheme provided by the application can be applied to various communication systems, such as a 5G communication system, a future evolution system or a plurality of communication convergence systems and the like. A variety of application scenarios may be included, for example, scenarios such as Machine to Machine (M2M), D2M, macro and micro Communication, enhanced Mobile Broadband (eMBB), ultra high reliability and ultra Low Latency Communication (urrllc), and mass internet of things Communication (mtc). These scenarios include, but are not limited to: communication between the UE and the UE, communication between the network side device and the network side device, or communication between the network side device and the UE. The embodiment of the application can be applied to communication between network side equipment and UE, or communication between UE and UE, or communication between network side equipment and network side equipment in a 5G communication system.

Fig. 1 shows a schematic diagram of a possible structure of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system may include: a core network device 11, a first access network device 12, a second access network device 13, and a terminal device 14. The first access network device 12 and the second access network device 13 configure carrier aggregation respectively, the first access network device 12 is connected to the second access network device 13 through an X2 interface, and the first access network device 12 is connected to the core network device 11 through an S1 interface. In addition, in order to reduce the connection complexity of the core network device 11 and reduce the number of S1 connections of the core network device 11, in the communication system applied in the embodiment of the present application, the core network device 11 includes only one S1 connection, and the opposite end of the S1 connection is the first access network device 12, so that the core network device 11 cannot directly send the control signaling to the second access network device, and the interaction process of the logical signaling layer can be implemented through the forwarding of the first access network device 12. Similarly, in order to avoid the influence on the terminal device 14, a Radio Resource Control (RRC) link is not established between the second access network device 13 and the terminal device 14, and the signaling interaction between the second access network device 13 and the terminal device 14 can be realized only by forwarding the first access network device 12.

The first access network device 12 and/or the second access network device 13 may be a base station, a Transmission and Reception node (TRP), a relay station, an access Point, or the like. The first Access network device 12 and/or the second Access network device 13 may be a Base Transceiver Station (BTS) in a Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA) network, may also be an nb (nodeb) in a Wideband Code Division Multiple Access (WCDMA), and may also be an eNB or enodeb (evolved nodeb) in LTE. The first Access Network device 12 and/or the second Access Network device 13 may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The network side device 100 may also be a network side device in a 5G communication system or a network side device in a future evolution network. The terminology, however, is not intended to be limiting of the application.

The core network devices 11 may include control plane devices and user plane devices. The control plane device may include a Mobility Management Entity (MME), and the user plane device may include a Serving Gateway (S-GW), a Packet Data Network Gateway (PDN-GW), and the like. The MME may be used for mobility management, session management, network element selection, and user bearer information storage. The S-GW has functions of session management, routing and data forwarding, quality of service control, charging, and storing information, etc. The PDN-GW may be used for Internet Protocol (IP) address allocation, session management, routing, data forwarding, quality of service control, charging, policy and charging enforcement, and the like.

The terminal device 14 may be a wireless UE, which may be a device that provides voice and/or other traffic data connectivity to a user, a handheld device, computing device, or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a UE in a future 5G network or a UE in a future evolved PLMN network, etc., or may be a wired UE. A Wireless UE may communicate with one or more core networks via a Radio Access Network (RAN), and may be a Mobile terminal, such as a Mobile phone (or "cellular" phone) and a computer with a Mobile terminal, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile device, which exchanges languages and/or data with the RAN, and Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like, and the Wireless terminal may also be a Mobile device, a UE terminal, an Access terminal, a Wireless Communication device, a terminal unit, a Station, a Mobile Station (Mobile Station), or a vehicle-mounted Mobile device, A Remote Station (Remote Station), a Remote Station, a Remote Terminal (Remote Terminal), a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a User Agent (User Agent), a Terminal device, and the like. As an example, in the embodiment of the present application, fig. 1 illustrates that the terminal device is a mobile phone.

The first embodiment,

An embodiment of the present application provides a connection establishment method, as shown in fig. 2, the connection establishment method includes:

s21, the first access network device acquires the identification of the second access network device.

The second access network device is an access network device to be connected with the first access network device.

Optionally, as shown in fig. 3, in the step S21, the obtaining, by the first access network device, the identifier of the second access network device may specifically be implemented by the following steps:

and S31, the first access network equipment sends the indication information to the terminal equipment.

Correspondingly, the terminal device receives the indication information sent by the first access network device.

The indication information is used to indicate the terminal device to report a measurement report of a first cell, where the first cell is a cell that provides service for the second access network device, and the second access network device is an access network device to establish a connection with the first access network device.

S32, the terminal device obtains the measurement report of the first cell. Wherein the measurement report of the first cell includes an identification of the second access network device.

Specifically, the terminal device may obtain a measurement report of the first cell by measuring the first cell.

S33, the terminal device sends the measurement report of the first cell to the first access network device.

Correspondingly, the first access network device receives the measurement report of the first cell sent by the terminal device.

Further optionally, in the foregoing embodiment, the identifier of the second access network device includes: one or more of an identity Identifier (ID) of the second Access Network device, a Tracking Area Code (TAC) of the second Access Network device, a Radio Access Network Notification Area Code (RANAC) of the second Access Network device, a Public Land Mobile Network (PLMN) of the second Access Network device, and Radio Access Technology (RAT) information of the second Access Network device.

It should be noted that, on the basis of the foregoing embodiment, the second access network device in the connection establishment method provided in the embodiment of the present application may also be other information, as long as the identifier can uniquely identify the second access network device.

And S22, the first access network device sends a first connection request message to the second access network device according to the identifier of the second access network device.

Correspondingly, the second access network device receives the first connection request message sent by the first access network device.

Wherein the first connection request message is for requesting to establish a connection with the second access network device

It should be noted that, in step S22, the first access network device needs to send a message to the second access network device according to the identifier of the first access network device, and therefore the first access network device in this embodiment of the present application needs to have a function of acquiring the network address of the corresponding access network device according to the identifier of the access network device.

Illustratively, the first access network device may be configured with addressing functionality of the core network device.

In addition, the function of the first access network device obtaining the network address of the corresponding access network device according to the identifier of the access network device may be configured by Operation Administration and Maintenance (OAM), or in a self-starting function of the first access network device.

S23, the second access network device sends a first connection response message to the first access network device.

Correspondingly, the first access network device receives the first connection response message sent by the second access network device.

Wherein the first connection reply message is used to confirm establishment of a connection with the first access network device.

Further, referring to fig. 4, the connection request method provided in the foregoing embodiment further includes:

s24, the first access network device sends a second connection request message to the core network device.

Correspondingly, the core network device receives the second connection request message sent by the first access network device.

The second connection request message includes an identifier of the second access network device, and is used to request the core network device to establish a user plane connection and/or a control plane connection with the second access network device.

Optionally, the identifier of the second access network device in the foregoing embodiment includes: one or more of an ID of the second Access Network device, a TAC of the second Access Network device, a RANAC of the second Access Network device, a Public Land Mobile Network (PLMN) of the second Access Network device, and Radio Access Technology (RAT) information of the second Access Network device.

Similarly, on the basis of the foregoing embodiment, the second access network device in the connection establishment method provided in the embodiment of the present application may also be other information, as long as the identifier can uniquely identify the second access network device.

S25, the core network device sends a third connection request message to the second access network device according to the identifier of the second access network device.

Correspondingly, the second access network device receives the third connection request message sent by the core network device.

Wherein the third request message is used for requesting to establish a user plane connection and/or a control plane connection with the second access network device.

And S26, the second access network equipment sends a third connection response message to the core network equipment.

Correspondingly, the core network device receives the third connection response message sent by the second access network device.

Optionally, after the step S26, the method further includes:

s27, the core network device sends a second response message to the first access network device, and/or S28, the second access network device sends a second response message to the first access network device.

Correspondingly, the first access network device receives a second response message sent by the core network device and/or receives a second response message sent by the second access network device.

Wherein the second response message is used to indicate that the core network device and the second access network device have established a user plane connection and/or a control plane connection.

Specifically, the sending, by the core network device, the second response message to the first access network device may specifically be: and the core network equipment sends a second response message to the first access network equipment through the connection established between the core network equipment and the first access network equipment.

Specifically, the sending, by the second access network device, the second response message to the first access network device may specifically be: and the second access network equipment sends a second response message to the first access network equipment through the connection established between the second access network equipment and the first access network equipment.

Further, the connection establishment method provided by the above embodiment can be applied to the cases of EN-DC, NGEN-DC, and NE-DC.

When applied to the case of EN-DC, NGEN-DC, the first access network device may be: in a base station eNB or an lte eNB in the fourth generation mobile communication system, the second access network device may be: in a base station gbb in a fifth generation mobile communication system, the core network device may be: MME or Authentication Management Function (AFM), so that the connection established between the first access network device and the second access network device is X2 or Xn connection, and the user plane connection established between the core network device and the second access network device may be S1 connection or NG connection.

When applied to the case of NE-DC, the first access network device may be: the base station gNB second access network device in the fifth generation mobile communication system may be: a base station eNB in a fourth generation mobile communication system, a core network device is: the AFM, and thus the connection established between the first access network device and the second access network device is an X2 or Xn connection, and the user plane connection established between the core network device and the second access network device may be an NG connection.

Example II,

An embodiment of the present application provides a connection establishment method, as shown in fig. 5, the connection establishment method includes:

and S51, acquiring the identification of the second access network equipment.

Similarly, referring to fig. 3, in the step S51, the obtaining, by the first access network device, the identifier of the second access network device may be specifically implemented by the following steps:

S52, the first access network device sends a first connection request message to the core network device.

Correspondingly, the core network device receives a first connection request message sent by the first access network device.

The first connection request message includes an identifier of the second access network device, and is used to request the core network device to establish a control plane connection with the second access network device.

And S53, the core network device sends a third connection request to the second access network device according to the identifier of the second access network device.

Correspondingly, the second access network device receives the third connection request sent by the core network device.

Wherein the third connection request message is used to request establishment of a control plane connection with the second access network device.

And S54, the second access network equipment sends a third connection response message to the core network equipment.

Correspondingly, the core network device receives a third connection response message sent by the second access network device.

Wherein the third connection response message is used to confirm establishment of a control plane connection with the core network device.

S55, the core network device sends a first connection response message to the first access network device.

Correspondingly, the first access network device receives the first connection response message sent by the core network device.

Wherein the first connection response message is used to indicate that the core network device has established a control panel connection with the second access network device.

S56, the first access network device sends a second connection request message to the second access network device through the core network device.

Correspondingly, the core network equipment forwards a second connection request message sent by the first access network equipment to the second access network equipment; and the second access network equipment receives a second connection request message sent by the first access network equipment through the core network.

Wherein the second connection request message is used to request to establish a connection with the second access network device.

S57, the second access network device sends a second connection response message to the first access network device through the core network.

Correspondingly, the core network device forwards a second connection response message sent by the second access network device to the first access network device; and the first access network equipment receives a first connection response message sent by the second access network equipment through the core network.

Wherein the connection second response message is used to confirm establishment of a connection with the first access network device.

Optionally, the first connection request message is further configured to request the core network device to establish a user plane connection with the second access network device.

Because the first connection request message is also used for requesting the core network device to establish the user plane connection with the second access network device, the third connection request message sent by the core network device to the second access network device is also used for requesting to establish the user plane connection with the second access network device, and the third connection response message sent by the second access network device to the core network is also used for confirming the establishment of the user plane connection with the second access network device; the first connection response message sent by the core network device to the first access network device is further used to indicate that the core network device has established a user plane connection with the second access network device.

Further, in the communication system to which the connection establishment method provided in the embodiment of the present application is applied, the second access network device does not establish a control panel connection with the current network device, and therefore, optionally, after step S57, the method further includes:

and the core network disconnects the control plane connection established with the second access network equipment, and/or the second access network equipment disconnects the control plane connection established with the core network.

When applied to the case of EN-DC, NGEN-DC, the first access network device may be: in a base station eNB or an lte eNB in the fourth generation mobile communication system, the second access network device may be: in a base station gbb in a fifth generation mobile communication system, the core network device may be: MME or Authentication Management Function (AFM), so that the connection established between the first access network device and the second access network device is X2 or Xn connection, and the user plane connection established between the core network device and the second access network device may be S1-U connection or NG-U connection or S1 connection or NG connection.

When applied to the case of NE-DC, the first access network device may be: the base station gNB second access network device in the fifth generation mobile communication system may be: a base station eNB in a fourth generation mobile communication system, a core network device is: the AFM, and thus the connection established between the first access network device and the second access network device is an X2 or Xn connection, and the user plane connection established between the core network device and the second access network device may be an NG-U connection or an NG connection.

Example III,

An embodiment of the present invention provides an access network device, and referring to fig. 6, the access network device 600 includes:

an obtaining unit 61, configured to obtain an identifier of a second access network device, where the second access network device is an access network device to establish a connection with the access network device;

a sending unit 62, configured to send a first connection request message to the second access network device according to the identifier of the second access network device, where the first connection request message is used to request to establish a connection with the second access network device;

a receiving unit 63, configured to receive a first connection response message sent by the second access network device, where the first connection response message is used to confirm that a connection is established with the access network device.

Optionally, the sending unit 62 is further configured to send a second connection request message to the core network device; the second connection request message includes an identifier of the second access network device, and is used for requesting the core network device to establish a user plane connection with the second access network device;

the receiving unit 63 is further configured to receive a second response message sent by the core network device and/or the second access network device; the second response message is used to indicate that the core network device and the second access network device have established a user plane connection.

Optionally, the obtaining unit 61 is specifically configured to send instruction information to a terminal device, and receive a measurement report of the first cell sent by the terminal device;

the indication information is used for indicating the terminal equipment to report a measurement report of a first cell, and the first cell provides service for the second access network equipment; the measurement report of the first cell includes an identification of the second access network device.

Optionally, the identifier of the second access network device includes: one or more of an identity number, ID, of the second access network device, a tracking area code of the second access network device, a radio access network announcement area code, RANAC, of the second access network device, a public land mobile network, PLMN, of the second access network device, and radio access technology information of the second access network device.

An embodiment of the present invention provides an access network device, and referring to fig. 7, the access network device 700 includes:

a receiving unit 71, configured to receive a first connection request message sent by a first access network device, where the first connection request message is used to request to establish a connection with the access network device;

a sending unit 72, configured to send a first connection response message to the first access network device, where the first connection response message is used to confirm that a connection is established with the first access network device.

Optionally, the receiving unit 71 is further configured to receive a third connection request message sent by the core network device; the third request message is used for requesting to establish user plane connection with the access network equipment;

the sending unit 72 is further configured to send a third connection response message to the core network device, where the third connection response message is used to confirm that the user plane connection is established with the core network device.

Optionally, the sending unit 72 is further configured to send a second response message to the first access network device; the second response message is used to indicate that the core network device and the access network device have established a user plane connection.

An embodiment of the present invention provides a core network device, and referring to fig. 8, an access network device 800 includes:

a receiving unit 81, configured to receive a second connection request message sent by a first access network device; the second connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a user plane connection with the second access network device;

a sending unit 82, configured to send a third connection request message to the second access network device according to the identifier of the second access network device; the third request message is used for requesting to establish user plane connection with the second access network equipment;

the receiving unit 81 is further configured to receive a third connection response message sent by the second access network device, where the third connection response message is used to confirm that a user plane connection is established with the core network device.

Optionally, the sending unit 82 is further configured to send a first response message to the first access network device; the first response message is used for indicating that the core network device and the second access network device have established a user plane connection.

An embodiment of the present invention provides a terminal device, and referring to fig. 9, an access network device 900 includes:

a receiving unit 91, configured to receive indication information sent by a first access network device, where the indication information is used to indicate that the terminal device reports a measurement report of a first cell, the first cell is a cell that provides a service for a second access network device, and the second access network device is an access network device that is to establish a connection with the first access network device;

an obtaining unit 92, configured to obtain a measurement report of the first cell; the measurement report of the first cell includes an identification of the second access network device;

a sending unit 93, configured to send a measurement report of the first cell to the first access network device.

In the above embodiment, after acquiring the identifier of the second access network device, the first access network device first sends the first connection request message to the second access network device according to the identifier of the second access network device, and then receives the first connection response message sent by the second access network device, so as to establish connection with the second access network device.

Example four,

an obtaining unit 61, configured to obtain an identifier of a second access network device, where the second access network device is an access network device to establish a connection with the first access network device;

a sending unit 62, configured to send a first connection request message to a core network device; the first connection request message includes an identifier of the second access network device, and is used for requesting the core network device to establish a control plane connection with the second access network device;

a receiving unit 63, configured to receive a first connection response message sent by the core network device, where the first connection response message is used to indicate that the core network device and the second access network device have established a control plane connection;

the sending unit 62 is further configured to send a second connection request message to the second access network device through the core network device, where the second connection request message is used to request to establish a connection with the second access network device;

the receiving unit 63 is further configured to receive, by the core network device, a second connection response message sent by the second access network device, where the second connection response message is used to confirm that a connection is established with the access network device.

Optionally, the first connection request message is further configured to request the core network device to establish a user plane connection with the second access network device;

the first response message is used for indicating that the core network device and the second access network device have established a user plane connection.

Optionally, the identification information of the second access network device includes: one or more of an identification number ID of the second access network device, a tracking area code of the second access network device, a radio access network access controller RANAC of the second access network device, a public land mobile network PLMN of the second access network device, and radio access technology information of the second access network device.

An embodiment of the present invention provides a core network device, and as shown in fig. 8, the core network device 800 includes:

a receiving unit 81, configured to receive a first connection request message sent by a first access network device; the first connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a control plane connection with the second access network device;

a sending unit 82, configured to send a third connection request to the second access network device according to the identifier of the second access network device, where the third connection request message is used to request establishment of a control plane connection with the second access network device;

the receiving unit 81 is further configured to receive a third connection response message sent by the second access network device, where the third connection response message is used to confirm that a control plane connection is established with the second access network device;

the sending unit 82 is further configured to send a first connection response message to the first access network device, where the first connection response message is used to indicate that the core network device has established a control panel connection with the second access network device;

the sending unit 82 is further configured to forward a second connection request message sent by the first access network device to the second access network device, and forward a second connection response message sent by the second access network device to the first access network device; the second connection request message is used for requesting to establish connection with the second access network equipment; the connection second response message is used to confirm the establishment of the connection with the first access network device.

Optionally, the first connection request message is further configured to request establishment of a user plane connection with the second access network device;

the third connection request message is also used for requesting to establish user plane connection with the second access network equipment;

the third connection response message is also used for confirming the establishment of the user plane connection with the second access network equipment;

the first connection response message is further used to indicate that the core network device has established a user plane connection with the second access network device.

Optionally, the core network device further includes: a control unit;

and the processing unit is configured to disconnect the control plane connection established with the second access network device.

a receiving unit 71, configured to receive a third connection request message sent by a core network device, where the third connection request message is used to request to establish a control plane connection with the core network device;

a sending unit 72, configured to send a third connection response message to the core network device, where the third connection response message is used to confirm establishment of a control plane connection with the core network device;

the receiving unit 71 is further configured to receive, through the core network, a second connection request message sent by the first access network device; the second connection request message is used for requesting to establish connection with the second access network equipment;

the sending unit 72 is further configured to send a second connection response message to the first access network device through the core network; the connection second response message is used to confirm the establishment of the connection with the first access network device.

Optionally, the access network device further includes: a control unit;

and the control unit is used for disconnecting the control plane connection established with the core network.

An embodiment of the present invention provides a terminal device, and as shown in fig. 9, the terminal device 900 includes:

In the above embodiment, after acquiring the identifier of the second access network device, the first access network device first sends a first connection request message to the core network device, and then receives a first connection response message sent by the core network device, so that the core network device establishes a control plane connection with the second access network device, and then sends a second connection request message to the second access network device through the core network device, and receives a second connection response message sent by the second access network device through the core network device, so as to establish a connection with the second access network device, because the first access network device first establishes a control plane connection between the core network device and the second access network device before establishing a connection with the second access network device, the connection establishment method provided in the above embodiment can establish a connection between the first access network device and the second access network device through the core network device, the problem that the connection between the MN and the SN cannot be established through the existing method in the DC network is solved.

Example V,

Fig. 10 is a schematic diagram of a hardware structure of a terminal device for implementing an embodiment of the present invention, where the terminal device 100 includes, but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 10 is not intended to be limiting, and that terminal devices may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present application, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 101 is configured to receive indication information sent by a first access network device, where the indication information is used to indicate that the terminal device reports a measurement report of a first cell, the first cell is a cell that provides service for a second access network device, and the second access network device is an access network device to establish a connection with the first access network device;

a processor 110 configured to obtain a measurement report of the first cell; the measurement report of the first cell includes an identification of the second access network device;

the radio frequency unit 101 is further configured to send a measurement report of the first cell to the first access network device.

It should be understood that, in the embodiment of the present application, the radio frequency unit 101 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 can also communicate with a network and other devices through a wireless communication system.

The terminal device provides wireless broadband internet access to the user through the network module 102, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the terminal device 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used to receive an audio or video signal. The input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the Graphics processor 1041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. The microphone 1042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode.

The terminal device 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or the backlight when the terminal device 100 is moved to the ear. As one type of motion sensor, an accelerometer sensor can detect the magnitude of acceleration in multiple directions (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. Touch panel 1071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 1071 (e.g., operations by a user on or near touch panel 1071 using a finger, stylus, or any suitable object or attachment). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Specifically, other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 1071 may be overlaid on the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although in fig. 10, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the terminal device, and is not limited herein.

The interface unit 108 is an interface for connecting an external device to the terminal apparatus 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 100 or may be used to transmit data between the terminal apparatus 100 and the external device.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the terminal device, connects various parts of the entire terminal device using various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the terminal device. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The terminal device 100 may further include a power supply 111 (such as a battery) for supplying power to the plurality of components, and preferably, the power supply 111 may be logically connected to the processor 110 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system.

In addition, the terminal device 100 includes some functional modules that are not shown, and are not described in detail here.

An embodiment of the present application further provides an access network device, and as shown in fig. 11, the access network device 110 includes: a processor 111, a memory 112, a computer program stored on the memory 112 and executable on the processor 111, the computer program implementing the steps of the frequency band determination method in the above embodiments when executed by the processor 111.

An embodiment of the present application further provides a core network device, and as shown in fig. 12, the core network device 120 includes: a processor 121, a memory 122, a computer program stored on the memory 122 and executable on the processor 121, the computer program implementing the steps of the frequency band determination method in the above embodiments when executed by the processor 121.

An embodiment of the present application further provides a terminal device, and as shown in fig. 13, the terminal device 130 includes: the processor 131, the memory 132, and a computer program stored in the memory 132 and executable on the processor 131, when the computer program is executed by the processor 131, implement the steps of the beam failure recovery request sending method in the first embodiment.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements multiple processes of the connection establishment method in the foregoing embodiments, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present application or portions thereof contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (e.g., a mobile phone, a computer, a server, an air conditioner, or a network-side device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method for establishing a connection, the method being applied to a first access network device, the method comprising:

acquiring a network address of the second access network device according to the identifier of the second access network device, and sending a first connection request message to the second access network device, where the first connection request message is used to request to establish an X2 connection or an Xn connection with the second access network device;

receiving a first connection response message sent by the second access network device, where the first connection response message is used to confirm that an X2 connection or an Xn connection is established with the first access network device;

sending a second connection request message to the core network equipment; the second connection request message includes an identifier of the second access network device, and is used for requesting the core network device to establish a user plane connection and/or a control plane connection with the second access network device;

receiving a second response message sent by the core network device and/or the second access network device; the second response message is used to indicate that the core network device and the second access network device have established a user plane connection and/or a control plane connection;

the obtaining the identifier of the second access network device includes:

sending indication information to a terminal device, wherein the indication information is used for indicating the terminal device to report a measurement report of a first cell, and the first cell provides service for the second access network device;

and receiving a measurement report of the first cell sent by the terminal equipment, wherein the measurement report of the first cell comprises the identifier of the second access network equipment.

2. The method of claim 1, wherein the identification of the second access network device comprises: one or more of an identity number, ID, of the second access network device, a tracking area code of the second access network device, a radio access network announcement area code, RANAC, of the second access network device, a public land mobile network, PLMN, of the second access network device, and radio access technology information of the second access network device.

3. A method for establishing a connection, the method being applied to a second access network device, the method comprising:

receiving a first connection request message sent by a first access network device, where the first connection request message is used to request to establish an X2 connection or an Xn connection with the second access network device;

sending a first connection response message to the first access network device, where the first connection response message is used to confirm that an X2 connection or an Xn connection is established with the first access network device;

receiving a third connection request message sent by the core network equipment; the third connection request message is used for requesting to establish user plane connection and/or control plane connection with the second access network equipment;

and sending a third connection response message to the core network device, where the third connection response message is used to confirm establishment of user plane connection and/or control plane connection with the core network device.

4. The method of claim 3, wherein after sending the third connection response message to the core network device, the method further comprises:

sending a second response message to the first access network device; the second response message is used to indicate that the core network device and the second access network device have established a user plane connection and/or a control plane connection.

5. A connection establishment method is applied to a core network device, and the method comprises the following steps:

receiving a second connection request message sent by the first access network equipment; the second connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a user plane connection and/or a control plane connection with the second access network device;

sending a third connection request message to the second access network equipment according to the identifier of the second access network equipment; the third connection request message is used for requesting to establish user plane connection and/or control plane connection with the second access network equipment;

and receiving a third connection response message sent by the second access network device, where the third connection response message is used to confirm establishment of user plane connection and/or control plane connection with the core network device.

6. The method of claim 5, wherein after receiving the third connection reply message sent by the second access network device, the method further comprises:

sending a first connection response message to the first access network device; the first connection response message is used to indicate that the core network device and the second access network device have established a user plane connection and/or a control plane connection.

7. A connection establishing method is applied to terminal equipment, and the method comprises the following steps:

acquiring a measurement report of the first cell; the measurement report of the first cell includes an identifier of the second access network device, where the identifier of the second access network device is used for the first access network device to send a first connection request message to the second access network device, and is used for the first access network device to send a second connection request message to a core network device, where the first connection request message is used to request to establish an X2 connection or an Xn connection with the second access network device, and the second connection request message is used to request the core network device to establish a user plane connection and/or a control plane connection with the second access network device;

8. A method for establishing a connection, the method being applied to a first access network device, the method comprising:

9. The method of claim 8,

the first connection request message is further used for requesting the core network device to establish a user plane connection with the second access network device;

the first connection response message is used to indicate that the core network device and the second access network device have established a user plane connection.

10. The method of claim 8 or 9, wherein the identification information of the second access network device comprises: one or more of an identification number ID of the second access network device, a tracking area code of the second access network device, a radio access network access controller RANAC of the second access network device, a public land mobile network PLMN of the second access network device, and radio access technology information of the second access network device.

11. A connection establishment method is applied to a core network device, and the method comprises the following steps:

sending a third connection request message to the second access network device according to the identifier of the second access network device, where the third connection request message is used to request establishment of a control plane connection with the second access network device;

12. The method of claim 11, wherein the first connection request message is further used for requesting the core network to establish a user plane connection with the second access network device;

13. The method of claim 11, wherein after forwarding the second connection reply message sent by the second access network device to the first access network device, the method further comprises:

and disconnecting the control plane connection established with the second access network equipment.

14. A method for establishing a connection, the method being applied to a second access network device, the method comprising:

15. The method of claim 14, wherein after sending a second connection acknowledgement message to the first access network device through the core network, the method further comprises:

and disconnecting the control plane connection established with the core network.

16. An access network device, comprising:

a sending unit, configured to obtain a network address of the second access network device according to the identifier of the second access network device, and send a first connection request message to the second access network device, where the first connection request message is used to request to establish an X2 connection or an Xn connection with the second access network device;

a receiving unit, configured to receive a first connection response message sent by the second access network device, where the first connection response message is used to confirm that an X2 connection or an Xn connection is established with the access network device;

the sending unit is further configured to send a second connection request message to the core network device; the second connection request message includes an identifier of the second access network device, and is used for requesting the core network device to establish a user plane connection and/or a control plane connection with the second access network device;

the receiving unit is further configured to receive a second response message sent by the core network device and/or the second access network device; the second response message is used to indicate that the core network device and the second access network device have established a user plane connection and/or a control plane connection;

the acquiring unit is specifically configured to send indication information to a terminal device, and receive a measurement report of a first cell sent by the terminal device;

17. The access network device of claim 16, wherein the identification of the second access network device comprises: one or more of an identity number, ID, of the second access network device, a tracking area code of the second access network device, a radio access network announcement area code, RANAC, of the second access network device, a public land mobile network, PLMN, of the second access network device, and radio access technology information of the second access network device.

18. An access network device, comprising:

a receiving unit, configured to receive a first connection request message sent by a first access network device, where the first connection request message is used to request to establish an X2 connection or an Xn connection with the access network device;

a sending unit, configured to send a first connection response message to the first access network device, where the first connection response message is used to confirm that an X2 connection or an Xn connection is established with the first access network device;

the receiving unit is further configured to receive a third connection request message sent by the core network device; the third connection request message is used for requesting to establish user plane connection and/or control plane connection with the access network equipment;

the sending unit is further configured to send a third connection response message to the core network device, where the third connection response message is used to confirm establishment of user plane connection and/or control plane connection with the core network device.

19. The access network apparatus of claim 18,

the sending unit is further configured to send a second response message to the first access network device; the second response message is used to indicate that the core network device and the access network device have established a user plane connection and/or a control plane connection.

20. A core network device, comprising:

a receiving unit, configured to receive a second connection request message sent by a first access network device; the second connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a user plane connection and/or a control plane connection with the second access network device;

a sending unit, configured to send a third connection request message to the second access network device according to the identifier of the second access network device; the third connection request message is used for requesting to establish user plane connection and/or control plane connection with the second access network equipment;

the receiving unit is further configured to receive a third connection response message sent by the second access network device, where the third connection response message is used to confirm establishment of a user plane connection and/or a control plane connection with the core network device.

21. Core network device according to claim 20,

the sending unit is further configured to send a first connection response message to the first access network device; the first connection response message is used to indicate that the core network device and the second access network device have established a user plane connection and/or a control plane connection.

22. A terminal device, comprising:

a receiving unit, configured to receive indication information sent by a first access network device, where the indication information is used to indicate that a terminal device reports a measurement report of a first cell, the first cell is a cell that provides service for a second access network device, and the second access network device is an access network device that is to establish a connection with the first access network device;

an obtaining unit, configured to obtain a measurement report of the first cell; the measurement report of the first cell includes an identification of the second access network device; the identifier of the second access network device is used for the first access network device to send a first connection request message to the second access network device, and is used for the first access network device to send a second connection request message to a core network device, where the first connection request message is used to request to establish an X2 connection or an Xn connection with the second access network device, and the second connection request message is used to request the core network device to establish a user plane connection and/or a control plane connection with the second access network device;

23. An access network device, comprising:

an obtaining unit, configured to obtain an identifier of a second access network device, where the second access network device is an access network device to establish a connection with a first access network device;

24. The access network device of claim 23,

25. The access network device of claim 23 or 24, wherein the identification information of the second access network device comprises: one or more of an identification number ID of the second access network device, a tracking area code of the second access network device, a radio access network access controller RANAC of the second access network device, a public land mobile network PLMN of the second access network device, and radio access technology information of the second access network device.

26. A core network device, comprising:

a receiving unit, configured to receive a first connection request message sent by a first access network device; the first connection request message includes an identifier of a second access network device, and is used for requesting the core network device to establish a control plane connection with the second access network device;

27. Core network device according to claim 26,

the first connection request message is also used for requesting to establish user plane connection with the second access network equipment;

28. The core network device of claim 26, wherein the core network device further comprises: a control unit;

the control unit is configured to disconnect a control plane connection established with the second access network device.

29. An access network device, comprising:

the receiving unit is further configured to receive, through the core network, a second connection request message sent by the first access network device; the second connection request message is used for requesting to establish connection with second access network equipment;

30. The access network device of claim 29, wherein the access network device further comprises: a control unit;

31. An access network device, comprising: processor, memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the connection establishment method according to any one of claims 1 or 2, or 3 or 4, or 8-10, or 14, 15.

32. A core network device, comprising: processor, memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the connection establishment method according to any one of claims 5, 6, or 11-13.

33. A terminal device, comprising: processor, memory and a computer program stored on the memory and executable on the processor, which computer program, when being executed by the processor, carries out the steps of the connection establishment method as claimed in claim 7.

34. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the connection establishment method according to any one of claims 1 to 15.