CN110830600B

CN110830600B - Address acquisition method, address sending method and device

Info

Publication number: CN110830600B
Application number: CN201810911026.XA
Authority: CN
Inventors: 李大鹏; 高音
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-08-10
Filing date: 2018-08-10
Publication date: 2022-08-19
Anticipated expiration: 2038-08-10
Also published as: CN110830600A; WO2020029784A1

Abstract

The invention provides an address acquisition method, an address sending method and an address sending device, wherein the address acquisition method comprises the following steps: receiving an interface message sent by a proxy base station connected with the core network or sent by the core network, wherein the interface message carries a transport layer address of a second base station, and the second base station is connected with the proxy base station and is not directly connected with the core network; and acquiring the transport layer address of the second base station carried in the interface message. The invention solves the problem that the base station node connected with the core network in the related technology can not obtain the transmission layer address information of the base station node which is not connected with the core network. The effect of improving the connectivity between network elements in the network architecture is achieved.

Description

Address acquisition method, address sending method and device

Technical Field

The present invention relates to the field of communications, and in particular, to an address acquisition method, an address sending method, and an address sending device.

Background

In some network architectures, there are base station nodes that establish a control plane connection with the core network, and there are also base station nodes that do not establish a control plane connection with the core network. For those base station nodes that do not establish a control plane connection with the core Network, although the base station node that establishes a control plane connection with the core Network may obtain name information or identification information (such as a gNB ID) of the base station node through an Automatic Neighbor relation function (ANR), it cannot obtain Transport Layer address information (TNL address) of the base station node. Because some connections, such as Stream Control Transmission Protocol (SCTP) connections, require both sides to know the transport layer address of the other side, when other base station nodes cannot know the transport layer address of the other side, the other base station nodes cannot establish a connection with the other side; accordingly, the base station nodes which do not establish control plane connection with the core network cannot obtain the transport layer address information of other base station nodes, and further cannot establish connection between the base station nodes and the core network.

Disclosure of Invention

The embodiment of the invention provides an address acquisition method, an address sending method and an address sending device, which are used for at least solving the problem that a base station node connected with a core network in the related art cannot acquire the transport layer address information of the base station node not connected with the core network.

According to an embodiment of the present invention, there is provided an address obtaining method applied to a first base station connected to a core network, including:

receiving an interface message sent by a proxy base station connected with the core network or sent by the core network, wherein the interface message carries a transport layer address of a second base station, and the second base station is connected with the proxy base station and is not directly connected with the core network;

and acquiring the transport layer address of the second base station carried in the interface message.

Optionally, receiving an interface message sent by a proxy base station connected to the core network or sent by the core network includes at least one of:

receiving the interface message transmitted by the core network when a transport layer address of the second base station is stored on the core network, wherein the transport layer address is transmitted to the core network by the second base station through the proxy base station;

receiving the interface message sent by the proxy base station when a transport layer address of the second base station is stored on the proxy base station, wherein the transport layer address is communicated to the proxy base station by the second base station;

and when the transport layer address of the second base station is stored on the second base station, receiving the interface message sent by the second base station through a proxy base station connected with the core network or sent by the core network.

Optionally, the method comprises at least one of:

when the transport layer address of the second base station is stored on the core network, before receiving the interface message sent by the core network, the method further includes: sending an address request message to the core network, where the address request message is used to request to acquire a transport layer address of the second base station, and the address request message carries an identifier of the second base station;

when the transport layer address of the second base station is stored on the proxy base station, prior to receiving the interface message sent by the proxy base station, the method further comprises: sending an address request message to the proxy base station, where the address request message is used to request to acquire a transport layer address of the second base station, and the address request message carries an identifier of the second base station;

when the transport layer address of the second base station is stored on the second base station, before receiving the interface message sent by the second base station through a proxy base station connected to the core network or sent through the core network, the method further includes: sending an address request message to the proxy base station or the core network, where the address request message is used to request to acquire a transport layer address of the second base station, where the address request message carries an identifier of the second base station, and the address request message is used to instruct the proxy base station to acquire the transport layer address of the second base station from the second base station or instruct the core network to acquire the transport layer address of the second base station from the second base station through the proxy base station.

Optionally, before sending the address request message to the proxy base station, the method further includes: receiving the identifier of the proxy base station sent by the proxy base station, the identifier of the second base station connected with the proxy base station, and the corresponding relationship between the second base station and the proxy base station, or receiving the identifier of the proxy base station sent by the proxy base station, the identifier of the second base station connected with the proxy base station, the corresponding relationship between the second base station and the proxy base station, and the storage state of the transport layer address of the second base station, wherein the storage state is used for indicating whether the transport layer address of the second base station is stored on the proxy base station.

According to an embodiment of the present invention, there is provided a method for sending an address, applied to a proxy base station connected to a core network, including:

and sending a first interface message to a first base station connected with the core network or sending a first interface message to the core network, wherein the first interface message carries a transport layer address of a second base station, the first interface message is sent to the core network to indicate the core network to send a second interface message to the first base station, the second interface message carries the transport layer address of the second base station acquired by the core network from the first interface message, and the second base station is connected with the proxy base station and is not directly connected with the core network.

Optionally, before sending the first interface message to the first base station connected to the core network or sending the first interface message to the core network, the method further includes: receiving a third interface message sent by the second base station; and acquiring the transport layer address of the second base station carried in the third interface message.

Optionally, before receiving the third interface message sent by the second base station, the method further includes: and sending a first address request message to the second base station, wherein the first address request message is used for requesting to acquire a transport layer address of the second base station.

Optionally, before sending the first interface message to the first base station connected to the core network or sending the first interface message to the core network, the method further includes: receiving a second address request message sent by the first base station or sent by the core network, where the second address request message is used to request to acquire a transport layer address of the second base station, where the second address request message carries an identifier of the second base station, where the identifier of the second base station carried in the second address request message sent by the core network is acquired by the core network from the first base station, and the second address request message is used to indicate at least one of:

instructing the proxy base station to send the first interface message to the first base station;

instructing the proxy base station to send the first interface message to the core network;

instructing the proxy base station to send the first interface message to the first base station after acquiring the transport layer address of the second base station from the second base station;

instructing the proxy base station to send the first interface message to the core network after acquiring the transport layer address of the second base station from the second base station.

According to an embodiment of the present invention, there is provided a method for sending an address, which is applied to a second base station, and includes: sending a first interface message to a proxy base station, wherein the first interface message carries a transport layer address of the second base station, the first interface message is used for indicating the proxy base station to send to a first base station connected with a core network or send a second interface message to the core network, the second interface message carries the transport layer address of the second base station acquired by the proxy base station from the first interface message, the proxy base station is connected with the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network.

Optionally, before sending the first interface message to the proxy base station, the method further includes: and receiving a first address request message sent by the proxy base station, wherein the first address request message is used for requesting to acquire a transport layer address of the second base station.

According to an embodiment of the present invention, there is provided a method for acquiring an address, applied to a second base station, including: receiving a first interface message sent by a proxy base station connected with a core network, wherein the first interface message carries a transport layer address of a first base station connected with the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network; and acquiring the transport layer address of the first base station carried in the first interface message.

Optionally, before receiving the first interface message sent by the proxy base station, the method further includes:

sending a first address request message to the proxy base station, where the first address request message is used to request to acquire a transport layer address of the first base station, where the first address request message carries an identifier of the first base station, and the first address request message is used to instruct the proxy base station to acquire the transport layer address of the first base station from the first base station or to instruct the proxy base station to send the interface message to the second base station after acquiring the transport layer address of the first base station through the core network.

According to an embodiment of the present invention, there is provided a method for sending an address, applied to a proxy base station connected to a core network, including: and sending a first interface message to a second base station, wherein the first interface message carries a transport layer address of the first base station connected with the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network.

Optionally, before sending the first interface message to the second base station, the method further includes: receiving a second interface message sent by the first base station or sent by the core network, wherein the second interface message carries a transport layer address of the first base station, and the transport layer address of the first base station carried in the second interface message sent by the core network is acquired from the first base station by the core network; and acquiring the transport layer address of the first base station carried in the second interface message.

Optionally, before receiving the second interface message sent by the first base station or sent by the core network, the method further includes: sending a first address request message to the first base station or sending the first address request message to the core network, where the first address request message is used to obtain transport layer address information of the first base station, where the first address request message carries an identifier of the first base station, sending the first address request message to the first base station to instruct the first base station to send a second interface message to the proxy base station, and sending the first address request message to the core network to instruct the core network to send the second interface message to the proxy base station.

Optionally, before sending the first interface message to the second base station, the method further includes: receiving a first address request message sent by the second base station, where the first address request message is used to request to acquire a transport layer address of the first base station, and the first address request message carries an identifier of the first base station.

According to an embodiment of the present invention, there is provided a method for sending an address, which is applied to a first base station connected to a core network, and includes: sending a first interface message to the core network or sending a first interface message to a proxy base station connected with the core network, where the first interface message carries a transport layer address of the first base station, where the first interface message sent to the core network is used to instruct the core network to send a second interface message carrying the transport layer address of the first base station obtained by the core network to the proxy base station, and the first interface message sent to the proxy base station is used to instruct the proxy base station to send a third interface message carrying the transport layer address of the first base station obtained by the proxy base station to a second base station, and the second base station is connected with the proxy base station and has no direct connection with the core network.

Optionally, before sending the first interface message to the core network or sending the first interface message to a proxy base station connected to the core network, the method further includes:

receiving a first address request sent by the core network or sent by the proxy base station, where the first address request is used to obtain a transport layer address of the first base station, and the first address request is used to instruct the first base station to send the first interface message to the proxy base station or to instruct the first base station to send the first interface message to the core network.

According to another embodiment of the present invention, there is provided a first base station, which is connected to a core network, including: a receiving module, configured to receive an interface message sent by a proxy base station connected to the core network or sent by the core network, where the interface message carries a transport layer address of a second base station, and the second base station is connected to the proxy base station and is not directly connected to the core network;

and the acquisition module is used for acquiring the transport layer address of the second base station carried in the interface message.

According to another embodiment of the present invention, there is provided a proxy base station, which is connected to a core network, including:

a sending module, configured to send a first interface message to a first base station connected to the core network or to send the first interface message to the core network, where the first interface message carries a transport layer address of a second base station, the first interface message is sent to the core network to instruct the core network to send a second interface message to the first base station, the second interface message carries the transport layer address of the second base station, which is obtained by the core network from the first interface message, and the second base station is connected to the proxy base station and is not directly connected to the core network.

According to another embodiment of the present invention, there is provided a second base station including:

a sending module, configured to send a first interface message to a proxy base station, where the first interface message carries a transport layer address of the second base station, and the first interface message is used to instruct the proxy base station to send to a first base station connected to a core network or send to the core network a second interface message, where the second interface message carries the transport layer address of the second base station that is obtained by the proxy base station from the first interface message, the proxy base station is connected to the core network, and the second base station is connected to the proxy base station and has no direct connection with the core network.

a receiving module, configured to receive a first interface message sent by a proxy base station connected to a core network, where the first interface message carries a transport layer address of a first base station connected to the core network, and the second base station is connected to the proxy base station and is not directly connected to the core network;

an obtaining module, configured to obtain the transport layer address of the first base station carried in the first interface message.

a sending module, configured to send a first interface message to a second base station, where the first interface message carries a transport layer address of a first base station connected to the core network, and the second base station is connected to the proxy base station and is not directly connected to the core network.

According to another embodiment of the present invention, there is provided a first base station, which is connected to a core network, including:

a sending module, configured to send a first interface message to the core network or to a proxy base station connected to the core network, where the first interface message carries a transport layer address of the first base station, where the first interface message sent to the core network is used to instruct the core network to send, to the proxy base station, a second interface message that carries the transport layer address of the first base station obtained by the core network, and the first interface message sent to the proxy base station is used to instruct the proxy base station to send, to a second base station, a third interface message that carries the transport layer address of the first base station obtained by the proxy base station, where the second base station is connected to the proxy base station and has no direct connection with the core network.

According to a further embodiment of the present invention, there is provided a system including a core network, further including a first base station as described above, a proxy base station as described above, and a second base station as described above.

According to a further embodiment of the present invention, there is provided a system comprising a core network, further comprising a second base station as described above, a proxy base station as described above and a first base station as described above.

According to a further embodiment of the invention, there is provided an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.

According to the invention, the core network or the proxy base station sends the transport layer address information of the second base station node which is not connected with the core network to the base station node which is connected with the core network, so that the node which is connected with the core network obtains the transport layer address information of the second base station which is not connected with the core network, and therefore, the problem that the base station node which is connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is not connected with the core network can be solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

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

fig. 2 is a flowchart of an address acquisition method according to an embodiment of the present invention;

fig. 3 is a flowchart of a method of transmitting an address according to an embodiment of the present invention;

FIG. 4 is a flow diagram of the sending of an address according to an embodiment of the invention;

fig. 5 is a flowchart of an address acquisition method according to an embodiment of the present invention;

FIG. 6 is a flow diagram of the sending of an address according to an embodiment of the invention;

FIG. 7 is a flow diagram of the transmission of an address according to an embodiment of the invention;

fig. 8 is a block diagram of a first base station according to an embodiment of the present invention;

fig. 9 is a block diagram of a proxy base station according to an embodiment of the present invention;

fig. 10 is a block diagram of a second base station according to an embodiment of the present invention;

fig. 11 is a block diagram of a second base station according to an embodiment of the present invention;

fig. 12 is a block diagram of a proxy base station according to an embodiment of the present invention;

fig. 13 is a block diagram of a first base station according to an embodiment of the present invention;

FIG. 14 is a block diagram of a network architecture according to an embodiment of the present invention;

FIG. 15 is a block diagram of a network architecture according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of a network architecture according to an embodiment of the present invention.

Detailed Description

The invention will be described in detail hereinafter with reference to the drawings and embodiments. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In addition, in the following description, "base station" and "base station node" refer to the same object, that is, both refer to a certain base station. The "first base station" in the embodiment of the present invention does not refer to a specific base station, and may be any base station connected to the core network, and similarly, the "proxy base station" may be any base station connected to the core network, and the "second base station" may be any base station that is not directly connected to the core network and is connected to the proxy base station.

The embodiment of the present application may operate on the network architecture shown in fig. 1, as shown in fig. 1, the network architecture includes: the mobile terminal comprises a core network, a first base station, a proxy base station and a second base station, wherein the first base station and the proxy base station are respectively connected with the core network, the second base station is connected with the proxy base station, and the second base station is not directly connected with the core network.

Example 1

In this embodiment, a method for acquiring an address operating in the network architecture is provided, which is applied to a first base station, and fig. 2 is a flowchart of the method for acquiring an address according to the embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:

step S202, receiving an interface message sent by a proxy base station connected with a core network or sent by the core network, wherein the interface message carries a transport layer address of a second base station obtained by the proxy base station or obtained by the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network;

step S204, the transmission layer address of the second base station carried in the interface message is obtained.

Through the steps, the core network or the proxy base station sends the transport layer address information of the second base station node which is not connected with the core network to the base station node which is connected with the core network, so that the node which is connected with the core network obtains the transport layer address information of the second base station which is positioned in the core network and establishes connection, and the problem that the base station node which is connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is not connected with the core network can be solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

It should be noted that the connection between the proxy base station and the core network may be a direct connection or an indirect connection, and the connection type may be a control plane connection.

Alternatively, the main body of the above steps may be a base station, etc., but is not limited thereto.

Optionally, receiving an interface message sent by a proxy base station connected to the core network or sent by the core network, includes at least one of:

receiving an interface message transmitted by a core network when a transport layer address of a second base station is stored on the core network, wherein the transport layer address is transmitted to the core network by the second base station through a proxy base station;

receiving an interface message sent by the proxy base station when a transport layer address of the second base station is stored on the proxy base station, wherein the transport layer address is transferred to the proxy base station by the second base station;

and when the transport layer address of the second base station is stored on the second base station, receiving an interface message sent by the second base station through a proxy base station connected with the core network or sent through the core network.

Optionally, when the transport layer address of the second base station is stored on the core network, before receiving the interface message sent by the core network, the method further includes: sending an address request message to a core network, wherein the address request message is used for requesting to acquire a transport layer address of the second base station, and the address request message carries an identifier of the second base station;

optionally, when the transport layer address of the second base station is stored on the proxy base station, before receiving the interface message sent by the proxy base station, the method further includes: sending an address request message to the proxy base station, wherein the address request message is used for requesting to acquire a transport layer address of the second base station, and the address request message carries an identifier of the second base station;

optionally, when the transport layer address of the second base station is stored on the second base station, before receiving an interface message sent by the second base station through a proxy base station connected to the core network or sent through the core network, the method further includes: and sending an address to the proxy base station or the core network, wherein the address request message is used for requesting to acquire a transport layer address of the second base station, and the address request message carries an identifier of the second base station, and the address request message is used for indicating the proxy base station to acquire the transport layer address of the second base station from the second base station or indicating the core network to acquire the transport layer address of the second base station from the second base station through the proxy base station.

Optionally, before sending the address request message to the proxy base station, the method further includes: and receiving the identification of the proxy base station sent by the proxy base station, the identification of the second base station connected with the proxy base station and the corresponding relation between the second base station and the proxy base station or receiving the storage states of the identification of the proxy base station sent by the proxy base station, the identification of the second base station connected with the proxy base station, the corresponding relation between the second base station and the proxy base station and the transport layer address of the second base station, wherein the storage states are used for indicating whether the transport layer address of the second base station is stored on the proxy base station or not.

In this embodiment, a method for sending an address operating in the network architecture is further provided, and is applied to a proxy base station, and fig. 3 is a flowchart of a method for obtaining an address according to an embodiment of the present invention, as shown in fig. 3, the flowchart includes the following steps:

step S302, a first interface message is sent to a first base station connected with a core network or sent to the core network, wherein the first interface message carries a transport layer address of a second base station obtained by a proxy base station, the first interface message is sent to the core network to indicate the core network to send a second interface message to the first base station, the second interface message carries a transport layer address of the second base station obtained by the core network from the first interface message, and the second base station is connected with the proxy base station and is not directly connected with the core network.

Through the steps, the problem that the base station node connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is not connected with the core network is solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

Optionally, before sending the first interface message to the first base station connected to the core network or sending the first interface message to the core network, the method further includes: receiving a third interface message sent by a second base station; and acquiring the transport layer address of the second base station carried in the third interface message.

Optionally, before receiving the third interface message sent by the second base station, the method further includes: and sending a first address request message to the second base station, wherein the first address request message is used for requesting to acquire the transport layer address of the second base station.

instructing the proxy base station to send a first interface message to the first base station;

instructing the proxy base station to send a first interface message to a core network;

instructing the proxy base station to send a first interface message to the first base station after acquiring the transport layer address of the second base station from the second base station;

and instructing the proxy base station to send the first interface message to the core network after acquiring the transport layer address of the second base station from the second base station.

In this embodiment, a method for sending an address operating in the network architecture is further provided, which is applied to a second base station, and fig. 4 is a flowchart of a method for obtaining an address according to an embodiment of the present invention, as shown in fig. 4, the flowchart includes the following steps:

step S402, a first interface message is sent to the proxy base station, wherein the first interface message carries a transport layer address of a second base station, the first interface message is used for indicating the proxy base station to send to the first base station connected with the core network or send to the core network a second interface message, wherein the second interface message carries the transport layer address of the second base station acquired by the proxy base station from the first interface message, the proxy base station is connected with the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network.

Optionally, the main body for executing the above steps may be a base station, etc., but is not limited thereto.

Optionally, before sending the first interface message to the proxy base station, the method further includes:

and receiving a first address request message sent by the proxy base station, wherein the first address request message is used for requesting to acquire a transport layer address of the second base station.

In this embodiment, a method for sending an address operating in the network architecture is further provided, which is applied to a second base station, and fig. 5 is a flowchart of a method for obtaining an address according to an embodiment of the present invention, as shown in fig. 5, the flowchart includes the following steps:

step S502, receiving a first interface message sent by a proxy base station connected with a core network, wherein the first interface message carries a transport layer address of the first base station connected with the core network and obtained by the proxy base station, and a second base station is connected with the proxy base station and is not directly connected with the core network;

step S504, a transport layer address of the first base station carried in the first interface message is obtained.

Through the steps, the problem that the base station node which is not connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is connected with the core network is solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

Optionally, the main body of the above steps may be a base station.

Optionally, before receiving the first interface message sent by the proxy base station, the method further includes: and sending a first address request message to the proxy base station, wherein the first address request message is used for requesting to acquire a transport layer address of the first base station, the first address request message carries an identifier of the first base station, and the first address request message is used for indicating the proxy base station to acquire the transport layer address of the first base station from the first base station or indicating the proxy base station to send an interface message to the second base station after acquiring the transport layer address of the first base station through a core network.

In this embodiment, a method for sending an address operating in the network architecture is further provided, where the method is applied to a proxy base station, and fig. 6 is a flowchart of a method for obtaining an address according to an embodiment of the present invention, where as shown in fig. 6, the flowchart includes the following steps:

step S602, sending a first interface message to a second base station, where the first interface message carries a transport layer address of the first base station connected to the core network, where the transport layer address is obtained by the proxy base station, and the second base station is connected to the proxy base station and is not directly connected to the core network.

Optionally, before sending the first interface message to the second base station, the method further includes: receiving a second interface message sent by the first base station or sent by a core network, wherein the second interface message carries a transport layer address of the first base station, and the transport layer address of the first base station carried in the second interface message sent by the core network is acquired from the first base station by the core network; and acquiring the transport layer address of the first base station carried in the second interface message.

Optionally, before receiving the second interface message sent by the first base station or sent by the core network, the method further includes: and sending a first address request message to the first base station or sending the first address request message to the core network, wherein the first address request message is used for acquiring the transport layer address information of the first base station, the first address request message carries an identifier of the first base station, the first address request message is sent to the first base station and used for indicating the first base station to send a second interface message to the proxy base station, and the first address request message is sent to the core network and used for indicating the core network to send a second interface message to the proxy base station.

Optionally, before sending the first interface message to the second base station, the method further includes: and receiving a first address request message sent by the second base station, wherein the first address request message is used for requesting to acquire a transport layer address of the first base station, and the first address request message carries an identifier of the first base station.

In this embodiment, a method for sending an address operating in the network architecture is further provided, where the method is applied to a first base station, and fig. 7 is a flowchart of a method for obtaining an address according to an embodiment of the present invention, and as shown in fig. 7, the flowchart includes the following steps:

step S702, a first interface message is sent to the core network or sent to a proxy base station connected with the core network, wherein the first interface message sent to the core network is used for indicating the core network to send a second interface message carrying the transport layer address of the first base station obtained by the core network to the proxy base station, the first interface message sent to the proxy base station is used for indicating the proxy base station to send a third interface message carrying the transport layer address of the first base station obtained by the proxy base station to the second base station, and the second base station is connected with the proxy base station and has no direct connection with the core network.

Optionally, before sending the first interface message to the core network or to a proxy base station connected to the core network, the method further includes: receiving a first address request sent by a core network or sent by a proxy base station, wherein the first address request is used for acquiring a transport layer address of a first base station, and the first address request is used for instructing the first base station to send a first interface message to the proxy base station or instructing the first base station to send the first interface message to the core network.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

Example 2

In this embodiment, a first base station is provided, and fig. 8 is a schematic structural diagram of the first base station according to an embodiment of the present invention, and as shown in fig. 8, the structure includes:

a receiving module 81, configured to receive an interface message sent by a proxy base station connected to a core network or sent by the core network, where the interface message carries a transport layer address of a second base station obtained by the proxy base station or obtained by the core network, and the second base station is connected to the proxy base station and is not directly connected to the core network;

the obtaining module 83 is configured to obtain the transport layer address of the second base station carried in the interface message.

Through the structure, the problem that the base station node connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is not connected with the core network is solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

Optionally, the receiving module comprises at least one of:

a first receiving submodule, configured to receive an interface message sent by a core network when a transport layer address of a second base station is stored on the core network, where the transport layer address is sent to the core network by the second base station through a proxy base station;

the second receiving submodule is used for receiving the interface message sent by the proxy base station when the transport layer address of the second base station is stored in the proxy base station, wherein the transport layer address is transmitted to the proxy base station by the second base station;

and the third receiving submodule is used for receiving the interface message sent by the second base station through the proxy base station connected with the core network or sent through the core network when the transport layer address of the second base station is stored on the second base station.

Optionally, the sending module includes at least one of:

the first sending submodule is used for sending an address request message to the core network before receiving an interface message sent by the core network when the transport layer address of the second base station is stored on the core network, wherein the address request message is used for requesting to acquire the transport layer address of the second base station, and the address request message carries the identifier of the second base station;

the second sending submodule is used for sending an address request message to the proxy base station before receiving an interface message sent by the proxy base station when the transport layer address of the second base station is stored in the proxy base station, wherein the address request message is used for requesting to acquire the transport layer address of the second base station, and the address request message carries the identifier of the second base station;

and a third sending submodule, configured to send, when a transport layer address of the second base station is stored in the second base station, an address to the proxy base station or the core network before receiving an interface message sent by the second base station through the proxy base station connected to the core network or sent through the core network, where the address request message is used to request to acquire the transport layer address of the second base station, and the address request message carries an identifier of the second base station and is used to instruct the proxy base station to acquire the transport layer address of the second base station from the second base station or instruct the core network to acquire the transport layer address of the second base station from the second base station through the proxy base station.

Optionally, the first base station further includes an identifier receiving module, configured to receive, before sending the address request message to the proxy base station, an identifier of the proxy base station sent by the proxy base station, an identifier of a second base station connected to the proxy base station, a correspondence between the second base station and the proxy base station, or a storage state of the identifier of the proxy base station sent by the proxy base station, the identifier of the second base station connected to the proxy base station, the correspondence between the second base station and the proxy base station, and a transport layer address of the second base station, where the storage state is used to indicate whether the transport layer address of the second base station is stored on the proxy base station.

In this embodiment, a proxy base station is further provided, and fig. 9 is a schematic structural diagram of a first base station according to an embodiment of the present invention, as shown in fig. 9, the structure includes:

a sending module 91, configured to send a first interface message to a first base station connected to a core network or send the first interface message to the core network, where the first interface message carries a transport layer address of a second base station obtained by a proxy base station, the first interface message is sent to the core network and is used to instruct the core network to send a second interface message to the first base station, the second interface message carries a transport layer address of the second base station obtained by the core network from the first interface message, and the second base station is connected to the proxy base station and is not directly connected to the core network.

Optionally, the proxy base station further includes: a receiving module, configured to receive a third interface message sent by a second base station before sending the first interface message to a first base station connected to a core network or sending the first interface message to the core network;

and the obtaining module is used for obtaining the transport layer address of the second base station carried in the third interface message.

Optionally, the proxy base station further includes: and a request sending module, configured to send a first address request message to the second base station before receiving a third interface message sent by the second base station, where the first address request message is used to request to acquire a transport layer address of the second base station.

Optionally, the proxy base station further includes: a request receiving module, configured to receive, before sending a first interface message to a first base station connected to a core network or sending a first interface message to the core network, a second address request message sent by the first base station or sent by the core network, where the second address request message is used to request to acquire a transport layer address of a second base station, where the second address request message carries an identifier of the second base station, and the identifier of the second base station carried in the second address request message sent by the core network is acquired by the core network from the first base station, and the second address request message is used to indicate at least one of:

In this embodiment, a second base station is further provided, and fig. 10 is a schematic structural diagram of a first base station according to an embodiment of the present invention, as shown in fig. 10, the structure includes:

a sending module 101, configured to send a first interface message to a proxy base station, where the first interface message carries a transport layer address of a second base station, and the first interface message is used to instruct the proxy base station to send to a first base station connected to a core network or send to the core network a second interface message, where the second interface message carries the transport layer address of the second base station that is obtained by the proxy base station from the first interface message, and the proxy base station is connected to the core network, and the second base station is connected to the proxy base station and has no direct connection with the core network.

Optionally, the second base station further includes a receiving module, configured to receive a first address request message sent by the proxy base station before sending the first interface message to the proxy base station, where the first address request message is used to request to acquire a transport layer address of the second base station.

In this embodiment, a second base station is further provided, and fig. 11 is a schematic structural diagram of the first base station according to the embodiment of the present invention, as shown in fig. 11, the structure includes:

a receiving module 111, configured to receive a first interface message sent by a proxy base station connected to a core network, where the first interface message carries a transport layer address of the first base station connected to the core network and obtained by the proxy base station, and a second base station is connected to the proxy base station and is not directly connected to the core network;

the obtaining module 113 is configured to obtain a transport layer address of the first base station carried in the first interface message.

By the structure, the problem that the base station node which is not connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is connected with the core network is solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

Optionally, the second base station further includes: the first address request message is used for indicating the proxy base station to acquire the transport layer address of the first base station from the first base station or indicating the proxy base station to acquire the transport layer address of the first base station through a core network and then sending the interface message to the second base station.

In this embodiment, a proxy base station is further provided, and fig. 12 is a schematic structural diagram of a first base station according to an embodiment of the present invention, and as shown in fig. 12, the structure includes:

a sending module 121, configured to send a first interface message to a second base station, where the first interface message carries a transport layer address of the first base station connected to the core network and obtained by the proxy base station, and the second base station is connected to the proxy base station and is not directly connected to the core network.

Through the structure, the problem that the base station node which is not connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is connected with the core network is solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

Optionally, the proxy base station further includes a receiving module, configured to receive, before sending the first interface message to the second base station, a second interface message sent by the first base station or sent by the core network, where the second interface message carries a transport layer address of the first base station, and the transport layer address of the first base station, which is carried in the second interface message sent by the core network, is obtained by the core network from the first base station;

and the acquisition module is used for acquiring the transport layer address of the first base station carried in the second interface message.

Optionally, the proxy base station further includes a request sending module, configured to send a first address request message to the first base station or send the first address request message to the core network before receiving a second interface message sent by the first base station or sent by the core network, where the first address request message is used to obtain transport layer address information of the first base station, where the first address request message carries an identifier of the first base station, and the first address request message is sent to the first base station and used to instruct the first base station to send the second interface message to the proxy base station, and the first address request message is sent to the core network and used to instruct the core network to send the second interface message to the proxy base station.

Optionally, the proxy base station further includes a request receiving module, configured to receive a first address request message sent by the second base station before sending the first interface message to the second base station, where the first address request message is used to request to acquire a transport layer address of the first base station, and the first address request message carries an identifier of the first base station.

In this embodiment, a first base station is further provided, and fig. 13 is a schematic structural diagram of the first base station according to the embodiment of the present invention, as shown in fig. 13, the structure includes:

a sending module 131, configured to send a first interface message to a core network or to a proxy base station connected to the core network, where the first interface message carries a transport layer address of the first base station, where the first interface message sent to the core network is used to instruct the core network to send, to the proxy base station, a second interface message carrying the transport layer address of the first base station obtained by the core network, and the first interface message sent to the proxy base station is used to instruct the proxy base station to send, to the second base station, a third interface message carrying the transport layer address of the first base station obtained by the proxy base station, and the second base station is connected to the proxy base station and has no direct connection with the core network.

Optionally, the first base station further includes a receiving module, configured to receive a first address request sent by the core network or sent by a proxy base station connected to the core network before sending the first interface message to the core network or sending the first interface message to the proxy base station, where the first address request is used to obtain a transport layer address of the first base station, and the first address request is used to instruct the first base station to send the first interface message to the proxy base station or instruct the first base station to send the first interface message to the core network. It is noted that as used above, the term "module" may refer to a combination of software and/or hardware that performs a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware or a combination of software and hardware is also possible and contemplated.

It should be noted that the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are located in different processors in any combination.

Example 3

This embodiment provides a system, which includes a core network, and further includes the first base station, the proxy base station, and the second base station in the first three embodiments in embodiment 2.

By the structure of the system, the problem that the base station node connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is not connected with the core network is solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

In this embodiment, a system is further provided, which includes a core network, and further includes the first base station, the proxy base station, and the second base station in the last three embodiments in embodiment 2.

By the structure of the system, the problem that the base station node which is not connected with the core network in the related technology can not obtain the transport layer address information of the base station node which is connected with the core network is solved. The effect of improving the connectivity between network elements in the network architecture is achieved.

Example 4

An embodiment of the present invention further provides a storage medium, where a computer program is stored in the storage medium, where the computer program is configured to execute, when running, the steps in any one of the method embodiments in embodiment 1, and details are not described herein again.

Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:

s1, receiving an interface message sent by a proxy base station connected with a core network or sent by the core network, wherein the interface message carries a transport layer address of a second base station obtained by the proxy base station or obtained by the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network;

and S2, acquiring the transport layer address of the second base station carried in the interface message.

Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.

Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.

Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.

Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

The following embodiments are respectively based on three architectures to explain the content of the embodiments of the present invention, and it should be noted that, in the following embodiments, the second base station node refers to a base station that has no control plane connection (for example, S1 connection or NG connection) with the core network; the proxy base station is a base station which has control plane connection (for example, S1 connection or NG connection) with the core network, and is also connected with a second base station; the first base station, the proxy base station, and the second base station may be any one of a gNB, an en-gNB, an eNB, or an ng-eNB, and are not limited thereto.

It should be noted that, under the condition of no conflict, the method for acquiring the TNL address of the second base station according to the first base station described in the following embodiments may be a method for reversely acquiring the TNL address of the first base station by the second base station, and the reversely acquired method is also within the protection scope of this patent, and except for the specifically mentioned portions in this patent document, the reverse method is not described in the following embodiments again.

The first embodiment is as follows:

the first embodiment describes a method in which the core network stores the TNL address information of the second base station, and the core network feeds back the stored TNL address information of the second base station to the first base station based on the address request of the first base station.

Fig. 14 is a schematic network structure diagram of a first embodiment of the present invention, and the following explains a first alternative embodiment of the present invention by taking the architecture shown in fig. 14 as an example, and as shown in fig. 14, the architecture of the embodiment of the present invention includes an LTE core network EPC, a first base station eNB2, a proxy base station proxy eNB, and a second base station en-gNB. Wherein, the EPC comprises MME/SGW; the eNB2 and proxy eNB can respectively establish an S1 interface with the EPC; the proxy eNB may establish an X2 interface with a second base station en-gNB and eNB2, respectively, with the proxy eNB.

eNB2 may obtain the transport layer address of the en-gNB by:

step 1: the second base station (en-gNB) sends the transmission layer address information and the base station identification of the second base station to a proxy base station (proxy eNB) through an X2 interface message; the transmission layer address information of the second base station is used for establishing SCTP connection between the second base station and other base stations;

step 2, the proxy base station (proxy eNB) sends the received transport layer address information of the second base station (en-gNB) connected with the proxy eNB and the base station identification (en-gNB ID) of the second base station (en-gNB) to the MME through an S1 interface;

then, the eNB2 may obtain transport layer address information of the second base station (en-gNB) through an address discovery method, and the eNB2 may further obtain a second base station identity (en-gNB ID) through an automatic neighbor relation function (ANR), where the address discovery method includes the following steps:

step 1: the eNB2 sends a request message to the core network to request the TNL address of the second base station en-gNB, wherein the request message carries the identifier of the second base station. The request message may be an eNB CONFIGURATION TRANSFER message of the S1 interface.

Step 2: the core network MME returns a response message to the eNB2 based on the transport layer address information of the second base station (en-gNB) and the base station identifier stored therein, wherein the response message includes the TNL address of the en-gNB and the en-gNB ID of the en-gNB.

The architecture of the embodiment of the present invention may also be the architecture shown in fig. 15, and as shown in fig. 15, the architecture of the embodiment of the present invention includes a core network AMF/UPF, a base station gNB1, a base station NG-eNB1, a proxy base station proxy NG-eNB, and a second base station gNB, where the base station gNB1, the base station NG-eNB1, and the proxy base station proxy NG-eNB may establish NG interfaces with the core network, respectively; the base station ng-eNB1 can establish an XN interface with the base station gNB1 and the proxy base station proxy ng-eNB respectively; the proxy base station proxy ng-eNB may establish an XN interface with the base station gNB1 and the second base station gNB, respectively.

The base station gNB1 or the base station ng-eNB1 may obtain the TNL address of the second base station gNB by:

step 1: the second base station gNB transmits a transport layer address (TNL address) and a base station identifier of the second base station gNB to the proxy base station proxy en-gNB through an XN interface message;

step 2: the Proxy base station Proxy NG-eNB sends the gNBID of the second base station and the one or more transport layer addresses of the second base station gNB to the core network via an NG interface message.

Then, the base station gNB1 or the base station ng-eNB1 may obtain the transport layer address information of the second base station (gNB) through an address discovery method, and the base station gNB1 or the base station ng-eNB1 may further obtain the second base station identity (gNB ID) through an automatic neighbor relation function (ANR), where the address discovery method includes the following steps:

step 1: and the base station gNB1 or the base station ng-eNB1 sends a request message to the core network to request the TNL address of the second base station gNB, wherein the request message carries the identifier of the second base station.

And 2, step: and the core network returns a response message to the base station gNB1 or the base station ng-eNB1 based on the transport layer address information and the base station identification of the second base station (en-gNB) stored by the core network, wherein the response message comprises the TNL address of the second base station and the base station identification of the second base station.

The architecture of the embodiment of the present invention may also be the architecture shown in fig. 16, and as shown in fig. 16, the architecture of the embodiment of the present invention includes a core network AMF/UPF, a base station gNB1, a base station ng-eNB1, a proxy base station proxy gNB, and a second base station ng-eNB;

the base station gNB1, the base station NG-eNB1 and the proxy base station proxy gNB can respectively establish NG interfaces with a core network; the base station ng-eNB1 can respectively establish an XN interface with the base station gNB1 and the proxy base station proxy gNB; the proxy base station gNB may establish an XN interface with base station gNB1 and a second base station ng-eNB, respectively.

The base station gNB1 or the base station ng-eNB1 may obtain the TNL address of the second base station ng-eNB by:

step 1: the ng-eNB transmits the transport layer address (TNL address) and the base station identification of the second base station to the proxy base station proxy gNB through the XN interface message;

step 2: the proxy base station proxy gNB sends the NG-eNB ID of the second base station and one or more transport layer addresses of the NG-eNB of the second base station to the core network via NG interface messages.

Then, the base station gNB1 or the base station ng-eNB1 may obtain the transport layer address information of the second base station (ng-eNB) through an address discovery method, and the base station gNB1 or the base station ng-eNB1 may further obtain the second base station identity (ng-eNB ID) through an automatic neighbor relation function (ANR), where the address discovery method includes the following steps:

step 1: the base station gNB1 or the base station NG-eNB1 sends a request message to the core network to request the TNL address of the NG-eNB of the second base station, wherein the request message carries the identifier of the second base station, and the request message may be an NG interface message;

and 2, step: the core network returns a response message to the base station gNB1 or the base station NG-eNB1 based on the transport layer address information and the base station identifier of the second base station (en-gNB) stored by the core network, wherein the response message includes the TNL address of the second base station and the base station identifier of the second base station, and the response message may be an NG interface message.

It should be noted that, in a specific embodiment, the method for transmitting the transport layer address (TNL address) and/or the base station identifier of the second base station to the proxy base station may be that the second base station actively sends an interface message carrying the TNL address and the base station identifier of the second base station to the proxy base station, or that the proxy base station requests these contents from the second base station through the interface message, and then the second base station feeds back the contents to the proxy base station through the interface message. In addition, in the first embodiment, the proxy base station itself may or may not store the TNL address information and the base station identifier of the second base station that the proxy base station itself receives.

The second embodiment is as follows:

in addition to the address discovery method described in the first embodiment, the address discovery method may also be implemented by: that is, after the second base station in the first embodiment transfers its own transport layer address (TNL address) to the proxy base station, the proxy base station directly sends the transport layer address and the base station identifier of the second base station to other base stations.

Specifically, taking the architecture shown in fig. 14 as an example, the address discovery method may be:

step 1, the proxy base station sends the TNL address information of the second base station connected with the proxy base station and the base station identification of the second base station to an eNB2 through an X2 interface message.

Through this step 1, the other base station, i.e. eNB2 in fig. 14, can obtain the TNL address information of the second base station.

It should be noted that, the above-mentioned address discovery function enables some or all base stations that can establish a connection with the proxy base station to passively obtain TNL address information of the second base station and a base station identifier of the second base station, and even can passively obtain TNL address information and base station identifiers of all second base stations that are connected with the proxy base station, and as to whether the base station uses these information and identifiers to establish a connection with the second base station, this embodiment is not limited, and it can immediately use these information to establish an SCTP connection with the second base station, and can also be used when there is a connection demand.

In addition to the above manner that the proxy base station stores the TNL address and the base station identifier of the second base station, and the proxy base station actively sends the TNL address information and the base station identifier of the second base station to the first base station, the TNL address information of the second base station may also be obtained in a manner that the first base station directly sends a request message to the proxy base station, but this manner requires that the first base station needs to determine whether a target base station (second base station) with which it wants to establish an SCTP connection is registered on the proxy base station, that is, needs to determine a target proxy base station for sending the request first, and specifically includes the following steps:

step 1: the proxy base station sends the base station identification of the second base station connected with the proxy base station to other base stations connected with the proxy base station, wherein the other base stations comprise the first base station;

step 2: after the first base station receives the second base station identifier, it may determine whether a target base station (second base station) with which it wants to establish an SCTP connection is registered on the proxy base station or on which proxy base station, and after determining the target proxy base station that sends the request, the first base station may send a first request message to the target proxy base station, requesting a TNL address of the second base station, where the first request message carries its own first base station identifier and the base station identifier of the second base station;

and 3, step 3: after the proxy base station receives the first request message, if the proxy base station stores the TNL information of the second base station corresponding to the second base station identifier carried in the first request message, the TNL information is sent to the first base station corresponding to the first base station identifier carried in the first request message in the form of a first response message;

if the TNL information of the second base station is not stored in the proxy base station, the proxy base station determines the second base station corresponding to the second base station identifier through the second base station identifier carried in the first request, and sends a second request message to the second base station to request the TNL address of the second base station, wherein the second request message at least carries the first base station identifier and also can carry the base station identifier of the second base station;

and 4, step 4: after receiving the second request message, the second base station sends a second response message to the proxy base station, wherein the second response message carries the first base station identifier, the second base station identifier and one or more TNL addresses of the second base station;

and 5: and after receiving the second response message, the proxy base station sends a third response message to the first base station corresponding to the first base station identifier according to the first base station identifier carried in the second response message, wherein the third response message at least carries the second base station identifier and one or more TNL addresses of the second base station.

It should be noted that, in addition to the above steps, the first base station may obtain the TNL address information of the second base station in the form of sending a request message to the proxy base station in the following manner:

step 1: the proxy base station sends the base station identification of the second base station connected with the proxy base station and the TNL address storage state of the second base station to other base stations connected with the proxy base station, wherein the other base stations comprise the first base station; wherein the address storage state may indicate whether a TNL address of a certain second base station connected to the proxy base station is stored on the proxy base station;

step 2: after receiving the second base station identifier and the TNL address storage state, the first base station may determine whether a target base station (second base station) with which the first base station wants to establish an SCTP connection is registered on the proxy base station and whether TNL address information of the second base station is stored on the proxy base station, and if the second base station is registered on the proxy base station and the TNL address is also stored on the proxy base station, the first base station may send a first request message to the proxy base station to request a TNL address of the second base station, where the first request message carries the base station identifier of the second base station and the base station identifier of the first base station;

and step 3: and after receiving the first request message, the proxy base station sends the TNL address of the second base station corresponding to the second base station identifier carried in the first request message to the first base station corresponding to the first base station identifier carried in the first request message in the form of a first response message.

In this way, the first base station may know whether a target base station (second base station) that the first base station wants to establish an SCTP connection is registered on the proxy base station, and may also know whether the TNL address of the second base station is stored on the proxy base station.

It should be noted that the first request message, the second request message, the first response message, the second response message, the third response message, and the like, may all be X2 interface messages.

In addition, taking fig. 15 and 16 as an example, in the network architecture shown in fig. 15 and 16, a method for the first base station gNB1 or the first base station ng-eNB1 to obtain the TNL address information of the second base station gNB or ng-eNB through the proxy base station is substantially the same as the above method, and is not repeated here. It should be noted that, in the two architectures, the message forms of each send message, each request message, and each response message are different from the above message forms, and XN interface messages are used in the two architectures.

Detailed description of the invention

In this embodiment, the third embodiment describes a method for a base station to obtain a TNL address of a second base station, and the third embodiment is mainly different from the first embodiment and the second embodiment in that, in the third embodiment, neither the proxy base station nor the core network stores TNL address information of the second base station, and the TNL address information of the second base station is still stored in the second base station.

Taking the architecture shown in fig. 14 as an example, the method for the base station to obtain the TNL address information of the second base station is:

step 1: a proxy base station (proxy eNB) obtains a base station identification of a second base station (en-gNB) through an X2 interface;

and 2, the proxy base station (proxy eNB) sends the corresponding relation between the base station identification of the proxy eNB and the base station identification of the second base station (en-gNB) connected with the proxy eNB to the core network MME through an S1 interface.

Through the steps 1 and 2, the proxy base station obtains the base station identifier of the second base station connected with the proxy base station, and the core network obtains the base station identifier of the proxy base station connected with the core network, the base station identifiers of all the second base stations connected with the proxy base station and the corresponding relation between the proxy base station and the second base stations.

Then, the other base station may obtain the TNL address information of the second base station through an address discovery method. The other base stations can also acquire the second base station identity (en-gNB ID) through an automatic neighbor relation function (ANR).

It should be noted that, the address discovery method described in the third embodiment is different from the address discovery methods in the first embodiment and the second embodiment, and the address discovery method in the third embodiment is specifically as follows:

step 1: a first base station (eNB 2) sends a first request message to a core network to request a TNL address of a second base station en-gNB, wherein the first request message carries a base station identifier of the first base station eNB2, an identifier of the second base station and request content (TNL address request), and can also carry transport layer address information of the first base station eNB2 for establishing SCTP connection; the request message may be an S1 interface message, such as an eNB CONFIGURATION TRANSFER message of an S1 interface;

step 2: after receiving the first request message, the core network sends a second request message to the proxy base station, where the second request message also includes a base station identifier of the first base station eNB2, an identifier of the second base station, and request content carried in the request message;

in this step, the core network reads the identifier of the second base station carried in the request message, matches the identifier of the second base station with the information, such as the base station identifiers of the proxy base station connected to the core network, the base station identifiers of all the second base stations connected to the proxy base station, the corresponding relationship between the proxy base station and the second base station, and the like, which are already stored by the core network, and obtains the second base station registered in the proxy base station proxy eNB by addressing, so that the transmission target of the request content is determined. The second request message may be an S1 interface message, such as an MME CONFIGURATION TRANSFER message;

and step 3: after receiving the second request message, the proxy base station sends the base station identifier of the first base station eNB2, the identifier of the second base station and the request content carried in the second request message to the second base station en-gNB through a third request message. Wherein, the third request message may be an X2 interface message or other message form;

in this step, the Proxy base station Proxy eNB determines that the base station identifier is not the Proxy base station identifier by checking the base station identifier in the destination address included in the second request message, matches the base station identifier with the base station identifiers of all second base stations connected to the Proxy base station Proxy eNB, which are stored in the Proxy base station Proxy eNB, and determines that the transmission destination of the third request message is the second base station en-gNB.

And 4, step 4: the second base station en gNB receives the third request message and returns a first response message to the proxy base station proxy eNB; the first response message includes the ID of the second base station en gbb corresponding to the request content in the third request message and one or more TNL addresses of the second base station for establishing the SCTP connection, and the target address of the first response message further includes the ID of the first base station identifier eNB2 carried in the third request message. The first response message may be an X2 interface message or other message form.

And 5: and after receiving the first response message, the proxy base station sends the content carried in the first response message to the core network MME in the form of a second response message. The second response message includes the first base station identifier, the second base station en gbb ID corresponding to the request content in the third request message, and one or more second base station TNL addresses for establishing the SCTP connection. The second response message may be an S1 interface message or other message form, for example, an eNB CONFIGURATION TRANSFER message of an S1 interface.

Step 6: and the core network MME sends the content in the received second response message to the eNB2 in the form of a third response message, wherein the third response message comprises the TNL address of the second base station en-gNB and the identification of the second base station en-gNB.

Through the steps, the first base station can obtain the TNL address information of the second base station, so that the SCTP connection can be established with the first base station.

Taking fig. 15 and 16 as an example, in the network architecture shown in fig. 15 and 16, a method for the first base station gNB1 or the first base station ng-eNB1 to obtain the TNL address information of the second base station gNB or ng-eNB through the core network and the proxy base station is substantially the same as the above method, and is not repeated here. It should be noted that, in the two architectures, the message formats of each request message, each forwarding message, and each response message are different from the above message format, and in this embodiment, an NG interface message format or an XN interface message format is adopted.

Detailed description of the invention

The fourth embodiment is different from the above three embodiments, where the above three embodiments describe a process in which the first base station obtains the TNL address information of the second base station, and the fourth embodiment describes a process in which the second base station obtains the TNL address information of the first base station. It should be noted that, for consistency of the foregoing description, in the fourth embodiment, names of base stations of the foregoing three embodiments are still continued. In addition, in the fourth embodiment, the TNL address information of the base station is stored in the base station itself.

Taking the architecture shown in fig. 14 as an example, the fourth embodiment adopts the same steps as the third embodiment, so that the proxy base station obtains the base station identifier of the second base station connected to the fourth embodiment, and the core network obtains the base station identifiers of the proxy base station connected to the core network, the base station identifiers of all the second base stations connected to the proxy base station, and the corresponding relationship between the proxy base station and the second base stations, and detailed steps are not repeated.

Then, the second base station may obtain TNL address information of the first base station through an address discovery method. The second base station may also obtain the first base station identity (eNB2 ID) by an automatic neighbor relation function (ANR).

The address discovery method in the fourth embodiment includes:

step 1: the second base station en gNB sends a first request message to the proxy base station proxy eNB for requesting the TNL address of the first base station eNB2, wherein the first request message carries the identifier of the first base station eNB2 and the identifier of the second base station en gNB. The SCTP connection establishing method also can carry the address information of a transmission layer of a second base station en gNB for establishing the SCTP connection; the first request message may be an X2 interface message or other message form;

and 2, step: the proxy base station proxy eNB sends a second request message to the core MME based on the received first request message to request the TNL address information of the first base station; the second request message includes the identifier of the first base station and the identifier of the second base station en gbb.

When the Proxy base station Proxy eNB checks that the target base station identifier in the first request message is not the base station identifier of the Proxy eNB, the Proxy base station sends a second request message to a core network MME to request the address information of the first base station.

The second request message may be an S1 interface message or other form of message, for example, it may be an eNB CONFIGURATION TRANSFER message of an S1 interface.

And 3, step 3: after receiving the second request message, the core network MME sends a third request message to the eNB2 based on the second request message, where the third request message includes the first base station identifier eNB2 ID and the second base station identifier en-gNB ID.

And 4, step 4: after receiving the third request message, the first base station eNB2 returns a first response message to the core network MME according to the request content (request for the first base station TNL address) in the third request message; the first response message includes the first base station eNB2 ID and the TNL address information of the first base station used for establishing the SCTP connection, and the target address in the first response message includes the ID of the second base station identifier en gbb. The first response message may be an S1 interface message or other form of message, for example, an eNB CONFIGURATION TRANSFER message which may be an S1 interface message;

and 5: after receiving the first response message, the core network MME sends a second response message to the proxy base station proxy eNB based on the first response message; the second response message also includes the first base station eNB2 ID in the first response message, the TNL address information of the first base station for establishing the SCTP connection, and the identifier of the second base station;

in this step, the core network MME matches the second base station identifier with the base station identifier of the proxy base station connected to the core network, the base station identifiers of all the second base stations connected to the proxy base station, and the correspondence between the proxy base station and the second base station, which are stored in the core network MME, by reading the identifier of the second base station carried in the first response message, addresses the second base station and registers on the proxy base station proxy eNB, and thus determines to send the second response message to the proxy base station proxy eNB;

the second response message may be an S1 interface message or other form of message, for example, an MME CONFIGURATION TRANSFER message of an S1 interface.

Step 6: after receiving the second response message, the proxy base station proxy eNB sends a third response message to the second base station en-gNB based on the second response message, where the third response message also includes the first base station eNB2 ID in the second response message, the TNL address information of the first base station for establishing the SCTP connection, and the identifier of the second base station;

in this step, when the Proxy base station Proxy eNB determines that the base station identifier in the target address in the second response message is not the self base station identifier through checking, the base station identifier in the target address is matched with the base station identifier of the second base station connected to the Proxy base station Proxy eNB, and the transmission target of the third response message is determined to be the second base station.

Through the steps, the second base station can obtain the TNL address information of the first base station, so that the SCTP connection can be established with the second base station.

In addition, optionally, taking fig. 15 and fig. 16 as an example, in the network architecture shown in fig. 15 and fig. 16, a method for the second base station gNB or ng-eNB to obtain the TNL address information of the first base station gNB1 or the first base station ng-eNB1 through the proxy base station and the core network is substantially the same as the above method, and is not repeated here. In both of these architectures, the message format of each request message and each response message is different from the above message format, and in this embodiment, an NG interface message or an XN interface message is used.

Detailed description of the invention

The fifth embodiment describes a process of acquiring the TNL address information of the first base station by the second base station, and in the fifth embodiment, the TNL address information of the base station is stored in the base station itself. The fifth embodiment is different from the fourth embodiment in that, first:

step 1: the proxy base station (proxy eNB) obtains the base station identification of the second base station (en-gNB) through an X2 interface;

and 2, the proxy base station (proxy eNB) sends the corresponding relation between the base station identification of the proxy eNB and the base station identification of the second base station (en-gNB) connected with the proxy eNB to the first base station eNB2 through an S1 interface.

Through the steps 1 and 2, the proxy base station obtains the base station identifier of the second base station connected with the proxy base station, and the first base station obtains the base station identifier of the proxy base station connected with the core network, the base station identifiers of all the second base stations connected with the proxy base station and the corresponding relation between the proxy base station and the second base stations.

Then, the second base station may obtain TNL address information of the first base station through an address discovery method. The second base station may also obtain the first base station identity (eNB2 ID) by an automatic neighbor relation function (ANR). The address discovery method in the fifth embodiment includes:

step 1: the second base station en gNB sends a first request message to the proxy base station proxy eNB to request the TNL address of the first base station eNB2, wherein the first request message carries an identifier of the first base station eNB2, an identifier of the second base station en gNB and also can carry address information of a transmission layer of the second base station en gNB for establishing SCTP connection; the first request message may be an X2 interface message.

Step 2: the proxy base station proxy eNB sends a second request message to the first base station eNB2 based on the first request message received by the proxy base station proxy eNB, where the second request message carries an identifier of the first base station eNB2 and an identifier of the second base station en gbb, and the second request message may be an X2 interface message;

and step 3: after receiving the second request message, the first base station eNB2 returns a first response message to the proxy base station proxy eNB, where the first response message carries the ID of the first base station eNB2, one or more TNL transport layer addresses of the first base station, and the en-gbb ID of the second base station; the first response message may be an X2 interface message;

in this step, since the first base station itself stores the base station identifier of the proxy base station connected to the core network, the base station identifiers of all the second base stations connected to the proxy base station, and the correspondence between the proxy base station and the second base stations, the first base station can match the second base station identifier in the second request message with the correspondence stored by itself to obtain the reception target (proxy base station) of the first response message;

and 4, step 4: the proxy base station proxy eNB sends a second response message to the second base station en-gNB based on the received first response message, wherein the second response message carries the ID of the first base station eNB2, one or more TNL address information for establishing SCTP connection of the first base station, and a second base station identifier; the second response message may be an X2 interface message;

Optionally, taking fig. 15 and 16 as an example, in the network architecture shown in fig. 15 and 16, a method for the second base station gNB or ng-eNB to obtain the TNL address information of the first base station gNB1 or the first base station ng-eNB1 through the proxy base station and the core network is substantially the same as the above method, and is not repeated here. It should be noted that, in the two architectures, the message format of each request message and each response message is different from the message format described above, and in this embodiment, an NG interface message or an XN interface message is used.

It should be noted that, when the second base station sends the first request message to the proxy base station, it needs to be determined that the first base station is connected to the proxy base station. The determining method may be that the proxy base station sends the base station identifier of the second base station to which the proxy base station is connected to other base stations to which the proxy base station is connected, where the proxy base station also includes the first base station, and then the first base station may determine that the second base station is connected to the proxy base station according to the received information.

The above embodiments include two general aspects:

firstly, if the target base station (the first base station or the second base station) does not send the TNL address information of the target base station to other main bodies (the agent base station and the core network), the TNL address information of the target base station can be obtained in a mode that the TNL address information of the target base station is transmitted between the first base station and the second base station through the agent base station and the core network or only through the agent base station through a request message or a response message;

secondly, the target base station (second base station) sends the address of the target base station to the proxy base station or sends the address to the core network through the proxy base station, and then the proxy base station can send the address information to the demand base station or the demand base station requests the address information from the core network or the proxy base station.

It should be noted that, in an optional embodiment, when the first base station requests the TNL address of the second base station from another main body by sending a request message, and the request message may also carry transport layer address information of the first base station itself, in this way, the TNL address information may be transferred to the second base station following the request message, and thus, the second base station obtains the TNL address information of the first base station. Vice versa, when the second base station wants to request the TNL address of the first base station from another entity by sending a request message, the TNL address information of the second base station may also be carried in the request message, and the information is transferred to the first base station along with the request message, and the first base station obtains the TNL address of the second base station.

In addition, it should be noted that, in each embodiment of the present invention, the X2 interface message may be in the form of an X2 interface setup message, a base station update message, or a customized X2 interface message, but no matter what the message format or form is, the X2 interface message in this embodiment must be able to carry transport layer address information and/or a base station identifier and/or an address storage status of the second base station; similarly, the XN interface message may be an XN interface setup message, a base station update message, or a customized XN interface message, but no matter what the message format or form is, the XN interface message in this embodiment must be able to carry transport layer address information and/or a base station identifier and/or an address storage state of the second base station; the S1 interface message may be in the form of an S1 interface setup message, a bs update message, or a customized S1 interface message, but no matter what the format or form of the message is, the S1 interface message must be able to carry transport layer address information of the second bs and/or a bs id of the second bs; similarly, the NG interface message may be in the form of an NG interface setup message, a base station configuration update message, or a customized NG interface message, but regardless of the message format or form, the NG interface message must be capable of carrying the base station identifier of the second base station and/or one or more transport layer address information of the base station identifier base station;

in summary, various messages in the embodiment of the present invention need to satisfy the requirement for implementing the embodiment, that is, various information in the method of the embodiment can be carried.

In addition, it should be noted that, in the embodiment of the present invention, no matter what the request messages, the response messages, or the interface messages, the base station identifiers and/or the TNL address information of the base stations are carried by the request messages, the response messages, or the interface messages, may be one or more, one set, or multiple sets, may be carried by using a custom field in the message, and may also use the custom field, a number, a special identifier, and the like to distinguish these carried contents.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized in a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a memory device and executed by a computing device, and in some cases, the steps shown or described may be executed out of order, or separately as individual integrated circuit modules, or multiple modules or steps thereof may be implemented as a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An address obtaining method is applied to a first base station connected with a core network, and is characterized by comprising the following steps:

acquiring a transport layer address of the second base station carried in the interface message;

wherein, when the transport layer address of the second base station is stored on the proxy base station, before receiving the interface message sent by the proxy base station, the method further comprises: sending an address request message to the proxy base station, where the address request message is used to request to acquire a transport layer address of the second base station, and the address request message carries an identifier of the second base station;

wherein the transport layer address of the second base station carried in the interface message sent by the core network is sent to the core network by the proxy base station after obtaining the transport layer address of the second base station.

2. The method of claim 1, wherein receiving the interface message sent by the proxy base station connected to the core network or sent by the core network comprises at least one of:

3. The method of claim 2, comprising at least one of:

when the transport layer address of the second base station is stored on the second base station, prior to receiving the interface message sent by the second base station through a proxy base station connected to the core network or sent through the core network, the method further includes: sending an address request message to the proxy base station or the core network, where the address request message is used to request to acquire a transport layer address of the second base station, where the address request message carries an identifier of the second base station, and the address request message is used to instruct the proxy base station to acquire the transport layer address of the second base station from the second base station or instruct the core network to acquire the transport layer address of the second base station from the second base station through the proxy base station.

4. The method of claim 1, wherein prior to sending the address request message to the proxy base station, the method further comprises: receiving the identifier of the proxy base station sent by the proxy base station, the identifier of the second base station connected with the proxy base station, and the corresponding relationship between the second base station and the proxy base station, or receiving the identifier of the proxy base station sent by the proxy base station, the identifier of the second base station connected with the proxy base station, the corresponding relationship between the second base station and the proxy base station, and the storage state of the transport layer address of the second base station, wherein the storage state is used for indicating whether the transport layer address of the second base station is stored on the proxy base station.

5. A method for sending an address is applied to a proxy base station connected with a core network, and is characterized by comprising the following steps:

sending a first interface message to a first base station connected with the core network or sending the first interface message to the core network, wherein the first interface message carries a transport layer address of a second base station, the first interface message is sent to the core network to indicate the core network to send a second interface message to the first base station, the second interface message carries the transport layer address of the second base station acquired by the core network from the first interface message, and the second base station is connected with the proxy base station and is not directly connected with the core network;

wherein, before transmitting the first interface message to the first base station connected to the core network or transmitting the first interface message to the core network, the method further comprises:

receiving a second address request message sent by the first base station, where the second address request message is used to request to acquire a transport layer address of the second base station, and the second address request message carries an identifier of the second base station.

6. The method of claim 5, wherein before sending the first interface message to the first base station connected to the core network or sending the first interface message to the core network, the method further comprises:

receiving a third interface message sent by the second base station;

and acquiring the transport layer address of the second base station carried in the third interface message.

7. The method of claim 6, wherein before receiving the third interface message transmitted by the second base station, the method further comprises:

and sending a first address request message to the second base station, wherein the first address request message is used for requesting to acquire a transport layer address of the second base station.

8. The method of claim 5, wherein before sending the first interface message to the first base station connected to the core network or sending the first interface message to the core network, the method further comprises:

receiving a second address request message sent by the core network, where the second address request message is used to request to acquire a transport layer address of the second base station, where the second address request message carries an identifier of the second base station, where the identifier of the second base station carried in the second address request message sent by the core network is acquired by the core network from the first base station, and the second address request message is used to indicate at least one of:

9. A method for sending an address is applied to a second base station, and is characterized by comprising the following steps:

sending a first interface message to a proxy base station, wherein the first interface message carries a transport layer address of the second base station, the first interface message is used for indicating the proxy base station to send the first base station connected with a core network or send a second interface message to the core network, wherein the second interface message carries the transport layer address of the second base station acquired by the proxy base station from the first interface message, the proxy base station is connected with the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network;

when the transport layer address of the second base station is stored in the proxy base station, the second interface message is sent to the first base station by the proxy base station after the first base station sends a second address request message to the proxy base station, where the second address request message is used to request to acquire the transport layer address of the second base station, and the second address request message carries an identifier of the second base station.

10. The method of claim 9, wherein prior to sending the first interface message to a proxy base station, the method further comprises:

11. An address acquisition method applied to a second base station is characterized by comprising the following steps:

receiving a first interface message sent by a proxy base station connected with a core network, wherein the first interface message carries a transport layer address of a first base station connected with the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network;

acquiring a transport layer address of the first base station carried in the first interface message;

wherein prior to receiving the first interface message sent by the proxy base station, the method further comprises:

12. A method for sending an address is applied to a proxy base station connected with a core network, and is characterized by comprising the following steps:

sending a first interface message to a second base station, wherein the first interface message carries a transport layer address of the first base station connected with the core network, and the second base station is connected with the proxy base station and is not directly connected with the core network;

wherein, before sending the first interface message to the second base station, the method further comprises:

receiving a first address request message sent by the second base station, where the first address request message is used to request to acquire a transport layer address of the first base station, and the first address request message carries an identifier of the first base station.

13. The method of claim 12, wherein prior to sending the first interface message to the second base station, the method further comprises:

receiving a second interface message sent by the first base station or sent by the core network, where the second interface message carries a transport layer address of the first base station, and the transport layer address of the first base station carried in the second interface message sent by the core network is obtained from the first base station by the core network;

and acquiring the transport layer address of the first base station carried in the second interface message.

14. The method of claim 13, wherein prior to receiving the second interface message sent by the first base station or sent by the core network, the method further comprises:

sending a first address request message to the first base station or sending the first address request message to the core network, where the first address request message is used to obtain transport layer address information of the first base station, where the first address request message carries an identifier of the first base station, sending the first address request message to the first base station to instruct the first base station to send a second interface message to the proxy base station, and sending the first address request message to the core network to instruct the core network to send the second interface message to the proxy base station.

15. A method for sending an address is applied to a first base station connected with a core network, and is characterized by comprising the following steps:

sending a first interface message to the core network or to a proxy base station connected to the core network, where the first interface message carries a transport layer address of the first base station, where the first interface message sent to the core network is used to instruct the core network to send a second interface message to the proxy base station, where the second interface message carries the transport layer address of the first base station obtained by the core network, and the first interface message sent to the proxy base station is used to instruct the proxy base station to send a third interface message to a second base station, where the third interface message carries the transport layer address of the first base station obtained by the proxy base station, and the second base station is connected to the proxy base station and has no direct connection with the core network; the third interface message is sent to the second base station by the proxy base station after the second base station sends a second address request message to the proxy base station, where the second address request message is used to request to acquire a transport layer address of the first base station, and the second address request message carries an identifier of the first base station.

16. The method of claim 15, wherein before sending the first interface message to the core network or to a proxy base station connected to the core network, the method further comprises:

17. A first base station, the first base station being connected to a core network, comprising:

a receiving module, configured to receive an interface message sent by a proxy base station connected to the core network or sent by the core network, where the interface message carries a transport layer address of a second base station, and the second base station is connected to the proxy base station and is not directly connected to the core network;

an obtaining module, configured to obtain a transport layer address of the second base station carried in the interface message;

wherein, when the transport layer address of the second base station is stored on the proxy base station, the first base station is further configured to: before receiving the interface message sent by the proxy base station, sending an address request message to the proxy base station, where the address request message is used to request to acquire a transport layer address of the second base station, and the address request message carries an identifier of the second base station.

18. A proxy base station, the proxy base station being connected to a core network, comprising:

a sending module, configured to send a first interface message to a first base station connected to the core network or to send a first interface message to the core network, where the first interface message carries a transport layer address of a second base station, and the first interface message is sent to the core network and used to instruct the core network to send a second interface message to the first base station, where the second interface message carries a transport layer address of the second base station that is obtained by the core network from the first interface message, and the second base station is connected to the proxy base station and is not directly connected to the core network;

wherein, the proxy base station is further configured to: before sending a first interface message to a first base station connected with the core network or sending a first interface message to the core network, receiving a second address request message sent by the first base station, where the second address request message is used to request to acquire a transport layer address of the second base station, and the second address request message carries an identifier of the second base station.

19. A second base station, comprising:

a sending module, configured to send a first interface message to a proxy base station, where the first interface message carries a transport layer address of the second base station, and the first interface message is used to instruct the proxy base station to send a second interface message to a first base station connected to a core network or to send the second interface message to the core network, where the second interface message carries the transport layer address of the second base station that is obtained by the proxy base station from the first interface message, the proxy base station is connected to the core network, and the second base station is connected to the proxy base station and is not directly connected to the core network;

when the transport layer address of the second base station is stored in the proxy base station, the second interface message is sent from the proxy base station to the first base station after the first base station sends a second address request message to the proxy base station, where the second address request message is used to request to acquire the transport layer address of the second base station, and the second address request message carries an identifier of the second base station.

20. A second base station, comprising:

an obtaining module, configured to obtain a transport layer address of the first base station carried in the first interface message;

wherein the second base station is further configured to: before receiving a first interface message sent by the proxy base station, sending a first address request message to the proxy base station, where the first address request message is used to request to acquire a transport layer address of the first base station, where the first address request message carries an identifier of the first base station, and the first address request message is used to instruct the proxy base station to acquire the transport layer address of the first base station from the first base station or to instruct the proxy base station to acquire the transport layer address of the first base station through the core network, and then sending the interface message to the second base station.

21. A proxy base station, the proxy base station being connected to a core network, comprising:

a sending module, configured to send a first interface message to a second base station, where the first interface message carries a transport layer address of a first base station connected to the core network, and the second base station is connected to the proxy base station and has no direct connection to the core network;

wherein, the proxy base station is further configured to: before sending a first interface message to a second base station, receiving a first address request message sent by the second base station, where the first address request message is used to request to acquire a transport layer address of the first base station, and the first address request message carries an identifier of the first base station.

22. A first base station, the first base station being connected to a core network, comprising:

a sending module, configured to send a first interface message to the core network or to a proxy base station connected to the core network, where the first interface message carries a transport layer address of the first base station, where the first interface message sent to the core network is used to instruct the core network to send, to the proxy base station, a second interface message carrying the transport layer address of the first base station obtained by the core network, and the first interface message sent to the proxy base station is used to instruct the proxy base station to send, to a second base station, a third interface message carrying the transport layer address of the first base station obtained by the proxy base station, where the second base station is connected to the proxy base station and is not directly connected to the core network; the third interface message is sent to the second base station by the proxy base station after the second base station sends a second address request message to the proxy base station, where the second address request message is used to request to acquire a transport layer address of the first base station, and the second address request message carries an identifier of the first base station.

23. An address transmission system comprising a core network, further comprising a first base station according to claim 17, a proxy base station according to claim 18 and a second base station according to claim 19.

24. An address transmission system comprising a core network, further comprising a second base station according to claim 20, a proxy base station according to claim 21 and a first base station according to claim 22.

25. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any one of claims 1 to 4, 5 to 8, 9 to 10, 11, 12 to 14, or 15 to 16.