CN112399505B

CN112399505B - Auxiliary base station switching method of terminal equipment and base station

Info

Publication number: CN112399505B
Application number: CN201910765944.0A
Authority: CN
Inventors: 彭聪; 曹李宁; 姚潇辛
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2022-06-21
Anticipated expiration: 2039-08-19
Also published as: CN112399505A

Abstract

The invention discloses an auxiliary base station switching method and a base station of terminal equipment, wherein when the auxiliary base station of the terminal equipment is determined to be switched, a main base station judges whether a source auxiliary base station and a target auxiliary base station have coupling connection or not according to coupling information, if so, first release request information is sent to the source auxiliary base station, so that the source auxiliary base station can directly carry out data forwarding with the target auxiliary base station through a forwarding data receiving port of the target auxiliary base station, and the main base station is not required to be used as a transfer station, thereby solving the technical problems of network congestion and main base station load overload caused by the fact that the main base station occupies main base station resources as the transfer station.

Description

Auxiliary base station switching method of terminal equipment and base station

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for assisting a base station to switch in a terminal device and a base station.

Background

With the fifth generation mobile network (5)^thgeneration mobile networks, 5G), and the application of the 5G technology has gradually increased the schedule. In the early development of 5G, the coverage of 5G is low, and the need for a fourth generation mobile network (4) is still needed^thgeneration mobile networks, 4G) networks cooperate to provide services to end users. The frequency band of 4G is relatively low and the construction time is long, so 4G is a mature wide coverage network, and has good mobility. And the frequency band of 5G is high, the coverage area of a cell is small, and the important point is to solve the problem of high throughput in a hot spot area. Therefore, according to the traffic demand of the terminal user, the dual connection of 4G and 5G can be realized, the dual connection improves the coverage and solves the mobility problem by means of the 4G control plane, and the 5G can also improve the throughput, thereby better meeting the capacity demand and the coverage demand of the user.

At present, there are two network models of 4G and 5G dual-connection, including a 4G base station as a main base station, a 5G base station as an auxiliary base station, a 5G base station as a main base station, and a 4G base station as an auxiliary base station. When the X2 interface connection is established between the 4G base station and the 5G base station, the X2 establishment message sent between the 4G base station and the 5G base station carries information such as the ID of the base station, the serving cell of the base station, and the neighboring cell of the serving cell of the base station. After a terminal accesses to a main base station, if the signal strength of the serving cell of the auxiliary base station is large enough and the service characteristics of the terminal are suitable for establishing dual connectivity, the main base station will decide that the terminal simultaneously accesses to the auxiliary base station, i.e. receives the services of two base stations, but the control plane signaling flow, resource allocation, handover decision, etc. of the terminal are still controlled by the main base station.

In an actual network coverage scenario, one main base station is usually connected to multiple auxiliary base stations, so that when a terminal moves between coverage areas of different auxiliary base stations covered by the same main base station, a network side needs to initiate a handover procedure of the auxiliary base stations of the terminal, where the network side includes the main base station and the auxiliary base stations, that is, the handover procedure is initiated by the current auxiliary base station or the main base station of the terminal. However, the information interaction related to the terminal is not performed between the two assisting base stations, the handover between the assisting base stations is completely decided and controlled by the main base station, and in the handover process of the existing assisting base station, the source assisting base station may use the main base station as a relay station, and send the terminal data buffered in the source assisting base station to the target assisting base station through the main base station, and if the source assisting base station and the target assisting base station are connected by the X2/Xn interface, the source assisting base station may also directly forward the terminal data buffered in the source assisting base station to the target assisting base station.

In the prior art, in order to ensure that the handover of the auxiliary base station of the terminal device is normally completed, the main base station transfers the forwarded data by itself. The data forwarding efficiency in the forwarding mode is low, which affects the switching speed and the interruption delay of the terminal data, resulting in poor switching performance. And the main base station is used as a transfer station to occupy the resources of the main base station, which causes the problems of network congestion, overload of the load of the main base station and the like.

Disclosure of Invention

The embodiment of the invention provides an auxiliary base station switching method and a base station of terminal equipment, which are used for solving the technical problems of network congestion and overload of a main base station caused by the fact that the main base station is used as a transfer station to occupy resources of the main base station in the prior art.

In a first aspect, an embodiment of the present invention provides a method for switching an auxiliary base station of a terminal device, which is applied to a main base station, where a coverage area of the main base station includes multiple auxiliary base stations, the multiple auxiliary base stations include a source auxiliary base station and a target auxiliary base station to be switched, the source auxiliary base station is an auxiliary base station connected to the terminal device, and the method includes:

the main base station determines whether to switch the auxiliary base station of the terminal equipment;

when the auxiliary base station of the terminal equipment is determined to be switched, the main base station judges whether coupling connection exists between the source auxiliary base station and the target auxiliary base station or not according to coupling information stored in the main base station;

and if the judgment result is yes, the main base station sends first release request information to the source auxiliary base station so that the source auxiliary base station directly forwards the data of the terminal equipment with the target auxiliary base station through a forwarded data receiving port of the target auxiliary base station, wherein the first release request information carries the information of the forwarded data receiving port of the target auxiliary base station.

Optionally, when the coupling information between the assisting base stations includes the coupling information between the source assisting base station and the target assisting base station, a coupling connection exists between the source assisting base station and the target assisting base station;

the coupling information is sent to the main base station by the auxiliary base station in the process of establishing a connection interface between the auxiliary base station and the main base station or after establishing the connection interface, and the main base station stores the coupling information.

Optionally, after the master base station determines whether a coupled connection exists between the source assisting base station and the target assisting base station, the method further includes:

and if the judgment result is negative, the main base station establishes a forwarding data transfer channel in the main base station and sends second release request information to the source auxiliary base station, so that the source auxiliary base station forwards the data of the terminal equipment with the target auxiliary base station through the forwarding data transfer channel according to the second release request information, wherein the forwarding data transfer channel comprises a forwarding data receiving port, and the second release request information carries the information of the forwarding data receiving port of the main base station.

Optionally, the determining, by the master base station, whether to switch the secondary base station of the terminal device includes:

the main base station detects the signal quality of the source auxiliary base station, wherein when the signal quality does not meet the requirement of the terminal equipment, the main base station determines to switch the auxiliary base station of the terminal equipment, and when the signal quality meets the requirement of the terminal equipment, the main base station determines not to switch the auxiliary base station of the terminal equipment; alternatively, the first and second electrodes may be,

and the main base station receives auxiliary base station switching request information sent by the source auxiliary base station, wherein the switching request information is sent when the source auxiliary base station detects that the signal quality of the main base station does not meet the requirements of the terminal equipment, and the main base station determines to switch the auxiliary base station of the terminal equipment when receiving the switching request.

In this embodiment, the main base station may obtain the signal quality of the source assisting base station in two ways, so as to determine whether to switch the assisting base station of the terminal device, thereby improving the flexibility of the method.

In a second aspect, an embodiment of the present invention provides a method for switching an auxiliary base station of a terminal device, where the method is applied to a source auxiliary base station, the source auxiliary base station is an auxiliary base station connected to the terminal device in a plurality of auxiliary base stations included in a coverage area of a main base station, and the plurality of auxiliary base stations further include a target auxiliary base station to be switched, and the method includes:

the source auxiliary base station receives first release request information sent by the main base station;

the source auxiliary base station directly forwards the data of the terminal equipment with the target auxiliary base station through a forwarding data receiving port of the target auxiliary base station, and the first release request information carries the information of the forwarding data receiving port of the target auxiliary base station.

Optionally, the method further comprises:

the source auxiliary base station receives second release request information sent by the main base station;

and the source auxiliary base station forwards the data of the terminal equipment with the target auxiliary base station through a forwarded data forwarding channel in the main base station according to the second release request information, wherein the forwarded data forwarding channel comprises a forwarded data receiving port, and the second release request information carries the information of the forwarded data receiving port of the main base station.

Optionally, before the source assisting base station receives the first release request information or the second release request information, the method further includes:

the source auxiliary base station detects the signal quality of the source auxiliary base station;

and when the signal quality does not meet the requirement of the terminal equipment, the source auxiliary base station sends auxiliary base station switching request information to the main base station, wherein the auxiliary base station switching request information is used for indicating the main base station to switch the auxiliary base station of the terminal equipment.

Optionally, in a process of establishing a connection interface between the source assisting base station and the main base station, the source assisting base station sends, to the main base station, coupling information between the source assisting base station and an assisting base station other than the source assisting base station, so that the main base station stores the coupling information; alternatively, the first and second electrodes may be,

after the connection interface between the source auxiliary base station and the main base station is established, the source auxiliary base station sends coupling information between the source auxiliary base station and auxiliary base stations except the source auxiliary base station in the plurality of auxiliary base stations to the main base station, so that the main base station stores the coupling information.

In a third aspect, an embodiment of the present invention provides a main base station, where a coverage area of the main base station includes multiple assisting base stations, where the multiple assisting base stations include a source assisting base station and a target assisting base station to be handed over, the source assisting base station is an assisting base station connected to a terminal device, and the main base station further includes:

a memory to store instructions;

a processor for reading the instructions in the memory, performing the following processes:

determining whether to switch the auxiliary base station of the terminal equipment;

and if so, sending first release request information to the source auxiliary base station so that the source auxiliary base station directly forwards the data of the terminal equipment with the target auxiliary base station through a forwarded data receiving port of the target auxiliary base station, wherein the first release request information carries the information of the forwarded data receiving port of the target auxiliary base station.

Optionally, when the coupling information between the assisting base stations includes the coupling information between the source assisting base station and the target assisting base station, it is determined that a coupling connection exists between the source assisting base station and the target assisting base station;

Optionally, the processor is configured to:

after judging whether a coupling connection exists between a source auxiliary base station and a target auxiliary base station, if the judgment result is negative, the main base station establishes a forwarding data transfer channel in the main base station and sends second release request information to the source auxiliary base station, so that the source auxiliary base station forwards data of the terminal equipment with the target auxiliary base station through the forwarding data transfer channel according to the second release request information, the forwarding data transfer channel comprises a forwarding data receiving port, and the second release request information carries information of the forwarding data receiving port of the main base station.

Optionally, the processor is specifically configured to:

detecting the signal quality of the source auxiliary base station, wherein when the signal quality does not meet the requirement of the terminal equipment, the auxiliary base station for switching the terminal equipment is determined, and when the signal quality meets the requirement of the terminal equipment, the auxiliary base station for not switching the terminal equipment is determined; alternatively, the first and second electrodes may be,

and receiving auxiliary base station switching request information sent by the source auxiliary base station, wherein the switching request information is sent when the source auxiliary base station detects that the signal quality of the source auxiliary base station does not meet the requirement of the terminal equipment, and the auxiliary base station for switching the terminal equipment is determined when the switching request is received.

In a fourth aspect, an embodiment of the present invention provides a source assisting base station, where the source assisting base station is an assisting base station connected to a terminal device in multiple assisting base stations included in a coverage area of a main base station, the multiple assisting base stations further include a target assisting base station to be switched, and the source assisting base station includes:

a memory to store instructions;

receiving first release request information sent by the main base station;

and directly forwarding terminal equipment data through the forwarding data receiving port of the target auxiliary base station and the target auxiliary base station, wherein the first release request information carries information of the forwarding data receiving port of the target auxiliary base station.

Optionally, the processor is further configured to,

receiving second release request information sent by the main base station;

and forwarding terminal equipment data with the target auxiliary base station through a forwarded data forwarding channel in the main base station according to the second release request information, wherein the forwarded data forwarding channel comprises a forwarded data receiving port, and the second release request information carries information of the forwarded data receiving port of the main base station.

Optionally, the processor is configured to:

detecting the signal quality of the self;

and when the signal quality does not meet the requirement of the terminal equipment, sending auxiliary base station switching request information to the main base station, wherein the auxiliary base station switching request information is used for indicating the main base station to switch the auxiliary base station of the terminal equipment.

Optionally, the processor is specifically configured to:

transmitting coupling information between the source auxiliary base station and auxiliary base stations except the source auxiliary base station in the connection interface establishment process of the source auxiliary base station and the main base station to the main base station; alternatively, the first and second electrodes may be,

after the connection interface between the source assisting base station and the main base station is established, coupling information between the source assisting base station and an assisting base station other than the source assisting base station in the plurality of assisting base stations is transmitted to the main base station.

In a fifth aspect, an embodiment of the present invention provides a master base station, where a coverage area of the master base station includes multiple assisting base stations, where the multiple assisting base stations include a source assisting base station and a target assisting base station to be switched, and the source assisting base station is an assisting base station connected to a terminal device, and the master base station includes:

a determining module, configured to determine whether to switch an assisting base station of the terminal device;

the judging module is used for judging whether coupling connection exists between the source auxiliary base station and the target auxiliary base station or not according to coupling information stored by the main base station when the auxiliary base station of the terminal equipment is determined to be switched;

and the sending module is used for sending first release request information to the source auxiliary base station when the judgment result is yes, so that the source auxiliary base station directly forwards the data of the terminal equipment with the target auxiliary base station through a forwarded data receiving port of the target auxiliary base station, and the first release request information carries the information of the forwarded data receiving port of the target auxiliary base station.

In a sixth aspect, an embodiment of the present invention provides a source assisting base station, where the source assisting base station is an assisting base station connected to a terminal device in multiple assisting base stations included in a coverage area of a main base station, the multiple assisting base stations further include a target assisting base station to be switched, and the source assisting base station includes:

a receiving module, configured to receive first release request information sent by the master base station;

and the data transmission module is used for directly forwarding the data of the terminal equipment with the target auxiliary base station through a forwarding data receiving port of the target auxiliary base station, and the first release request information carries the information of the forwarding data receiving port of the target auxiliary base station.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, on which computer instructions are stored, which, when executed by a processor, implement the steps of the method according to any one of the above first aspects.

In an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which computer instructions are stored, which, when executed by a processor, implement the steps of the method according to any one of the above second aspects.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

in the embodiment of the invention, when the auxiliary base station of the terminal equipment is determined to be switched, the main base station judges whether the source auxiliary base station and the target auxiliary base station have coupling connection or not according to the coupling information, if so, the main base station sends first release request information to the source auxiliary base station, so that the source auxiliary base station can directly carry out data forwarding with the target auxiliary base station through a forwarding data receiving port of the target auxiliary base station without using the main base station as a transfer base station, thereby solving the technical problems of network congestion and main base station load overload caused by the fact that the main base station occupies the resources of the main base station as the transfer base station, achieving the technical effects of reducing the load of the main base station and avoiding the network congestion.

Drawings

Fig. 1 is a flowchart of an assisting base station handover method of a terminal device according to an embodiment of the present invention;

fig. 2 is a schematic flowchart of establishing an interface between base stations according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of establishing an interface between base stations according to another embodiment of the present invention;

fig. 4 is a flowchart illustrating a main base station controlling a terminal device to switch an auxiliary base station according to an embodiment of the present invention;

fig. 5 is a flowchart of an auxiliary base station handover method for a terminal device according to another embodiment of the present invention;

fig. 6 is a schematic physical structure diagram of a main base station according to an embodiment of the present invention;

fig. 7 is a schematic physical structure diagram of a source assisted base station according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a main base station according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a source assisted base station according to an embodiment of the present invention.

Detailed Description

In order to solve the technical problem, the technical scheme in the embodiment of the invention has the following general idea:

the method is applied to a main base station, the coverage area of the main base station comprises a plurality of auxiliary base stations, the plurality of auxiliary base stations comprise a source auxiliary base station and a target auxiliary base station to be switched, the source auxiliary base station is an auxiliary base station connected with the terminal equipment, and the method comprises the following steps:

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments. In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.

It should be noted that the terminal device in the embodiment of the present invention includes a device for providing voice and/or data connectivity to a user, and specifically includes a device for providing voice to a user, or includes a device for providing data connectivity to a user, or includes a device for providing voice and data connectivity to a user. For example, may include a handheld device having wireless connection capability, or a processing device connected to a wireless modem. The terminal device may communicate with the core network via the radio access network, exchange voice or data with the RAN, or interact with the radio access network. The terminal device may include a user device, a wireless terminal device, a mobile terminal device, a device-to-device communication terminal device, a car-to-all terminal device, a machine-to-machine/machine type communication terminal device, an internet of things terminal device, a subscriber unit, a subscriber station, a mobile station, a remote station, an access point, a remote terminal, an access terminal, a user agent, or user equipment, etc. For example, mobile telephones (or so-called "cellular" telephones), computers with mobile terminal equipment, portable, pocket, hand-held, computer-included mobile devices, and the like may be included. Such as personal communication service telephones, cordless telephones, session initiation protocol phones, wireless local loop stations, personal digital assistants, and the like. Also included are constrained devices, such as devices that consume less power, or devices that have limited storage capabilities, or devices that have limited computing capabilities, etc. Including, for example, bar codes, radio frequency identification, sensors, global positioning systems, laser scanners, etc.

In the embodiment of the present invention, the terminal device may further include a relay (relay). Or, it is understood that any device capable of data communication with a base station may be considered a terminal device.

The base station in the embodiment of the invention refers to a device which is in the access network and communicates with the wireless terminal device through one or more cells in the air interface. The switching method in the embodiment of the invention is suitable for a double-connection scene, namely a network model consisting of two different base stations, wherein a main base station in the network model is a 4G base station, and an auxiliary base station in the network model is a 5G base station, or the main base station is the 5G base station and the auxiliary base station is the 4G base station. The coverage area of the main base station and the serving cell under the main base station can comprise a plurality of auxiliary base stations, so that after a terminal device is connected to the main base station, if the signal intensity of the serving cell of the auxiliary base station is large enough and the terminal device can establish double connection, the main base station can enable the terminal device to be connected to the main base station and simultaneously connected to one auxiliary base station, and simultaneously receive services provided by two base stations.

Referring to fig. 1, an embodiment of the present invention provides a method for switching an auxiliary base station of a terminal device, which is applied to a main base station, where a coverage area of the main base station includes multiple auxiliary base stations, the multiple auxiliary base stations include a source auxiliary base station and a target auxiliary base station to be switched, the source auxiliary base station is an auxiliary base station connected to the terminal device, and the method includes the following steps:

s101, the main base station determines whether to switch the auxiliary base station of the terminal equipment;

s102, when determining to switch the auxiliary base station of the terminal equipment, the main base station judges whether a coupling connection exists between the source auxiliary base station and the target auxiliary base station according to coupling information stored by the main base station;

when the coupling information between the auxiliary base stations comprises the coupling information between the source auxiliary base station and the target auxiliary base station, judging that coupling connection exists between the source auxiliary base station and the target auxiliary base station, wherein the coupling information is sent to the main base station by the auxiliary base station in the process of establishing a connection interface between the auxiliary base station and the main base station or after establishing the connection interface, and the main base station stores the coupling information.

And S103, when the judgment result is yes, the main base station sends first release request information to the source auxiliary base station, so that the source auxiliary base station directly forwards the data of the terminal equipment with the target auxiliary base station through the forwarding data receiving port of the target auxiliary base station, wherein the first release request information carries the information of the forwarding data receiving port of the target auxiliary base station.

The embodiment of the invention relates to an application scenario of dual connectivity, in order to establish a network model of dual connectivity, an X2 interface needs to be established between a main base station and an auxiliary base station, an X2 interface is an interface between e-nodebs and supports transmission between data and signaling, and an X2 interface or an Xn interface can be established between the auxiliary base stations, for example, if the auxiliary base station is a 4G base station, the interface between the auxiliary base stations is an X2 interface, and if the auxiliary base station is a 5G base station, the interface between the auxiliary base stations is an Xn interface. Further, since the main base station and the subsidiary base station are base stations supporting two different communication technologies, an X2 interface is established between the main base station and the subsidiary base station, for example, the main base station is a 5G base station, and although the 5G supports an Xn interface, the 4G base station is a 4G base station as the subsidiary base station, and the 4G base station does not support the Xn interface, so that the main base station and the subsidiary base station establish an X2 interface supported by both 4G and 5G.

The method for establishing the interface between the base stations in the embodiment of the invention comprises the following two modes:

in the mode 1, an X2 or Xn interface between the secondary base stations is established first, and then an X2 interface between the primary base station and the secondary base stations is established.

Mode 2, an X2 interface between the main base station and the auxiliary base station is established first, and then an X2 or Xn interface between the auxiliary base stations is established.

Referring to fig. 2, the main base station in fig. 2 is a 4G base station, and the auxiliary base station is a 5G base station, and fig. 2 exemplarily shows an implementation of the above-described mode 1, which includes the following steps:

step S201, establishing an Xn interface between the auxiliary base station 1 and the auxiliary base station 2;

step S202, the main base station sends first request information for establishing an X2 interface to the auxiliary base station 2;

step S203, the auxiliary base station 2 establishes an X2 interface between the main base station and the auxiliary base station 2 according to the first request information, and sends first response information of the established X2 interface to the main base station, wherein the first response information carries coupling information between the auxiliary base station 2 and other auxiliary base stations;

step S204, the main base station sends second request information for establishing an X2 interface to the auxiliary base station 1;

step S205, the assisting base station 1 establishes an X2 interface between the main base station and the assisting base station 1 according to the second request information, and sends second response information of the established X2 interface to the main base station, where the second response information carries coupling information between the assisting base station 1 and other assisting base stations.

It should be noted that the assisting base station 1 and the assisting base station 2 in fig. 2 do not represent only two assisting base stations, but may include 3 or more assisting base stations, and the operations of the other assisting base stations are the same as those of the assisting base stations 1 and 2, and therefore the other assisting base stations are not shown in the drawing.

Step S201 is first executed to establish an Xn interface between the assisting base station 1 and the assisting base station 2, and the establishing manner of the Xn interface can be referred to in the prior art and is not described in detail herein. It should be noted that the establishment of the Xn interface between the assisting base station 1 and the assisting base station 2 is initiated by the assisting base station 1 or the assisting base station 2, which indicates that the assisting base station 1 needs to establish an interface with the assisting base station 2, and if there is no communication need between the assisting base station 1 and the assisting base station 2, the Xn interface does not need to be established between the assisting base station 1 and the assisting base station 2. For example, there are 10 assisting base stations in total, and if an Xn interface needs to be established between every two assisting base stations, there need to be 45 Xn interfaces in total, but actually there may be only 5 pairs of assisting base stations with communication requirements, and only 5 Xn interfaces need to be established.

After step S201 is executed, step S202 is executed, and the main base station transmits the first request information to the assisting base station 2, so that the assisting base station 2 executes step S203 after receiving the information. It should be noted that the first response information sent by the assisting base station 2 to the main base station carries coupling information between the assisting base station 2 and other assisting base stations, where other assisting base stations include not only the assisting base station 1 but also other assisting base stations that establish coupling connection with the assisting base station 2, and the main base station may also store the received coupling information. The association in this embodiment is Stream Control Transmission Protocol (SCTP) association, and the association information includes an association identifier of an auxiliary base station that establishes the association, a start sequence number of signaling transmission control, information of an X2 or Xn port between the auxiliary base stations, an IP address of the auxiliary base station, and the like.

It should be noted that step S202 is actually the main base station initiating the request for establishing the interface, and the auxiliary base station 2 may also initiate the request for establishing the interface to the main base station, that is, the auxiliary base station 2 sends the request information for establishing the X2 interface to the main base station.

After step S203 is executed, step S204 and step S205 are executed in sequence, and the execution method of step S204 and step S205 can refer to step S202 to step S203, which are not described herein again.

Referring to fig. 3, the main base station in fig. 3 is a 5G base station, and the auxiliary base station is a 4G base station, and fig. 3 shows a possible implementation of the above-mentioned method 2, which includes the following steps:

step S301, the main base station sends first request information for establishing an X2 interface to the auxiliary base station 2;

step S302, the auxiliary base station 2 establishes an X2 interface between the main base station and the auxiliary base station 2 according to the first request information, and sends third response information of the completion of the establishment of the X2 interface to the main base station;

step S303, the main base station sends second request information for establishing the X2 interface to the assisting base station 1;

step S304, the auxiliary base station 1 establishes an X2 interface between the main base station and the auxiliary base station 1 according to the second request information, and sends fourth response information of the completion of the establishment of the X2 interface to the main base station;

step S305, establishing an X2 interface between the auxiliary base station 1 and the auxiliary base station 2;

step S306, the auxiliary base station 1 sends first updating information to the main base station, and the first updating information carries coupling information between the auxiliary base station 1 and other auxiliary base stations;

step S307, the auxiliary base station 2 sends second updating information to the main base station, wherein the second updating information carries coupling information between the auxiliary base station 2 and other auxiliary base stations;

step S308, the main base station sends first updating response information used for representing the coupling information of the auxiliary base station 1 saved by the main base station to the auxiliary base station 1;

in step S309, the main base station transmits second update response information indicating that the main base station has saved the coupling information of the subsidiary base station 2 to the subsidiary base station 2.

The network model in fig. 3 is similar to the network model in fig. 2, and although only the assisting base station 1 and the assisting base station 2 are shown in fig. 3, the network model may include 3 or more assisting base stations, which is not described herein again.

It should be noted here that steps S301 to S304 are performed in a similar manner to steps S202 to S205, except that the third response information and the fourth response information do not carry the coupling information of the assisting base station; the execution manner of step S305 is similar to that of step S201, and is not described herein again.

After steps S301 to S305 are performed in this order, step S306 is performed. After the connection coupling relationship between the assisting base station 1 and other assisting base stations is changed, the assisting base station 1 sends first updating information to the main base station, wherein the first updating information carries the connection coupling information between the assisting base station 1 and other assisting base stations. The first update information may further include coupling connection change information, for example, the assisting base station 1 and the assisting base station 2 establish an X2 interface, the assisting base station 1 also deletes an X2 interface with the assisting base station 3, so that the first update information includes coupling information between the assisting base station 1 and the assisting base station 2 and information for indicating that the coupling connection between the assisting base station 1 and the assisting base station 3 has been deleted, and the main base station saves the coupling information between the assisting base station 1 and the assisting base station 2 after receiving the first update information and deletes the coupling information between the assisting base station 1 and the assisting base station 3 stored in the main base station.

Step S307 is executed in a similar manner to step S306, and is not described herein again. After step S307 is executed, step S308 and step S309 are executed, specifically, after receiving and saving the first update information or the second update information, the primary base station transmits responsive first update response information or second update response information to the secondary base station 1 or the secondary base station 2, indicating that the primary base station has stored the latest coupling information of the secondary base station.

With the above mode 1 and the above mode 2, the assisting base station may transmit the coupling information between the assisting base stations to the main base station in the process of establishing the X2 interface with the main base station. The secondary base station may also send update information to the primary base station after the X2 interface has been established with the primary base station, after a change in the secondary base station's coupling connection has occurred. Or, the assisting base station may send the coupling information between the assisting base stations to the main base station in the process of establishing the X2 interface with the main base station, but the coupling connection of the assisting base station is changed later, and the assisting base station may also send the update information to the main base station.

After the interface between the base stations is established, step S101 is executed, that is, the main base station determines whether to switch the auxiliary base station of the terminal device.

Specifically, the auxiliary base station of the terminal device refers to a base station to which the terminal device is currently connected, that is, a source auxiliary base station, and the main base station may determine whether to switch the auxiliary base station of the terminal device by the following manners, including:

mode 3, the master base station detects the signal quality of the source auxiliary base station, wherein when the signal quality does not meet the requirement of the terminal device, the master base station determines to switch the auxiliary base station of the terminal device, and when the signal quality meets the requirement of the terminal device, the master base station determines not to switch the auxiliary base station of the terminal device;

mode 4, the master base station receives the auxiliary base station handover request information sent by the source auxiliary base station, where the handover request information is sent when the source auxiliary base station detects that the signal quality of the source auxiliary base station does not meet the requirement of the terminal device, and when the master base station receives the handover request, the master base station determines to handover the auxiliary base station of the terminal device.

With respect to the mode 3, the main base station may actively detect the signal quality of the serving cell in which the terminal device in the source-assisting base station is located, for example, the main base station detects the signal quality of the source-assisting base station once every 1 minute. And then judging whether the signal quality of the source auxiliary base station meets the requirement of the terminal equipment, wherein the requirement can be acquired by the main base station from the terminal equipment or different signal quality requirements preset by the main base station for different types of terminal equipment. When the signal quality does not meet the requirements of the terminal equipment, the auxiliary base station for switching the terminal equipment is determined.

As for the method 4, the assisting base station actively detects the signal quality of itself, and determines whether the current signal quality meets the requirement of the terminal device, where the requirement may be a requirement acquired by the source assisting base station from the terminal device, actively transmitted by the terminal device to the source assisting base station, or preset by the source assisting base station. Thus, when the signal quality is determined not to satisfy the terminal device, the source auxiliary base station transmits an auxiliary base station switching request to the main base station, so that the main base station determines the auxiliary base station which switches the terminal device.

It should be noted that, when the main base station determines to switch the auxiliary base station of the terminal device, the main base station switches the terminal device from the connection source auxiliary base station to the terminal device to connect to the target auxiliary base station, the target auxiliary base station is an auxiliary base station whose signal quality meets the requirement of the terminal device and whose terminal device is currently located in the serving cell of the target auxiliary base station, the main base station first sends an auxiliary base station addition request message to the target auxiliary base station meeting the condition, and the target auxiliary base station feeds back an addition response message carrying information of the forwarding data receiving port of the target auxiliary base station to the main base station, so that the main base station obtains information of the forwarding data receiving port of the target auxiliary base station. The specific method for determining the target assisting base station can also be referred to in the prior art, and is not limited herein.

After step S101 is executed, step S102 is executed, that is, when determining to switch the assisting base station of the terminal device, the main base station determines whether a coupling connection exists between the source assisting base station and the target assisting base station according to coupling information between the assisting base stations stored by the main base station, wherein when the coupling information between the assisting base stations includes coupling information between the source assisting base station and the target assisting base station, it is determined that a coupling connection exists between the source assisting base station and the target assisting base station, the coupling information is sent to the main base station by the assisting base station during or after a connection interface is established between the assisting base station and the main base station, and the main base station stores the coupling information.

In the embodiment of the present invention, after an interface is established between the assisting base stations, coupling information between the assisting base stations is sent to the main base station, and the main base station stores the coupling information, that is, the coupling information between the assisting base stations is sent to the main base station by the assisting base stations during or after a connection interface is established between the assisting base stations and the main base station, and the main base station stores the coupling information. Therefore, the main base station can determine whether the coupling connection exists between the target auxiliary base station and the source auxiliary base station by using the coupling information between the auxiliary base stations stored by the main base station, in a simple way, the main base station can store the coupling information between a plurality of pairs of auxiliary base stations, and therefore the coupling connection exists between the source auxiliary base station and the target auxiliary base station as long as the coupling information between the auxiliary base stations comprises the coupling information between the source auxiliary base station and the target auxiliary base station. For example, the master base station may search for coupling information through the identification information of the source subsidiary base station and the identification information of the target subsidiary base station.

After step S102 is executed, step S103 is executed, that is, when the determination result is yes, the primary base station sends first release request information to the source auxiliary base station, so that the source auxiliary base station directly performs data forwarding on the terminal device with the target auxiliary base station through a forwarding data receiving port of the target auxiliary base station, where the first release request information carries information of the forwarding data receiving port of the target auxiliary base station.

Specifically, when the source assisting base station and the target assisting base station have a coupled connection, the source assisting base station and the target assisting base station can directly perform data forwarding. The main base station sends first release request information to the source auxiliary base station, wherein the information carries information of a forwarding data receiving port of the target auxiliary base station, so that the source auxiliary base station can directly forward terminal equipment data with the target auxiliary base station by using the forwarding data receiving port of the target auxiliary base station, and the information of the forwarding data receiving port comprises an IP address, a port number and the like. It should be noted that data forwarding can be referred to in the prior art, and will not be described in detail here.

In this embodiment, the source assisting base station can directly forward data with the target assisting base station, so that the network resources of the main base station and the resource loss of the local processor and the storage space can be reduced, and the effect of avoiding network congestion can be achieved. In addition, because the data forwarding is directly carried out, the time delay of the data forwarding and the time delay of switching the auxiliary base station can be reduced, the switching efficiency of the auxiliary base station is improved, the data interruption time is shortened, and the switching performance and the user experience are greatly improved.

Further, when the determination result is negative, the main base station establishes a forwarding data forwarding channel in the main base station, and sends second release request information to the source auxiliary base station, so that the source auxiliary base station performs forwarding of the terminal device data with the target auxiliary base station through the forwarding data forwarding channel according to the second release request information, the forwarding data forwarding channel includes a forwarding data receiving port, and the second release request information carries information of the forwarding data receiving port of the main base station.

Specifically, when there is no coupling connection between the source assisting base station and the target assisting base station, in order to ensure that the terminal device is normally switched to the target assisting base station, the main base station may establish a forwarding data forwarding channel and send second release request information to the source assisting base station, where the second release request information includes information of a forwarding data receiving port of the forwarding data forwarding channel, so that the source assisting base station can perform data forwarding with the target assisting base station through the forwarding data receiving port of the forwarding data forwarding channel. For example, the source auxiliary base station first uses the forwarding data receiving port of the forwarding channel to complete data forwarding between the source auxiliary base station and the forwarding channel, and the main base station then performs data forwarding between the main base station and the target auxiliary base station through the forwarding data receiving port of the target auxiliary base station, thereby completing data forwarding from the source auxiliary base station to the target auxiliary base station.

In this embodiment, when the auxiliary base station of the terminal device is to be switched, there is a judgment basis for whether to establish the forwarding data transfer channel in the main base station, and there is no need for human configuration or fixed selection of a data forwarding mode, which improves the flexibility of the method.

As shown in fig. 4, a flow of the main base station performing the method for switching the secondary base station of the terminal device is shown in fig. 4, and includes the following steps:

step S401, the main base station determines an auxiliary base station for switching the terminal equipment;

and when the main base station detects that the signal quality of the source auxiliary base station does not meet the requirement of the terminal equipment or the main base station receives an auxiliary base station switching request sent by the source auxiliary base station, determining the auxiliary base station for switching the terminal equipment.

Step S402, the main base station sends auxiliary base station increasing request information to the target auxiliary base station;

step S403, the main base station receives the addition response information fed back by the target auxiliary base station, and the addition corresponding information carries the forward data receiving port information of the target auxiliary base station;

the manner of executing steps S402-S403 may refer to the description of the main base station sending the supplementary base station addition request information when step S101 is executed, and is not described herein again.

Step S404, the main base station judges whether a coupling connection exists between the source auxiliary base station and the target auxiliary base station;

if the determination result is yes, step S405 is executed, and if the determination result is no, step S406 is executed.

Step S405, the main base station puts the forwarded data receiving port information in the first release request information and sends the first release request information to the source auxiliary base station;

step S406, the main base station establishes a forwarding data transfer channel in the main base station;

step S407, the primary base station places the forwarded data receiving port information of the forwarded data relay channel in the second release request information, and sends the second release request information to the source auxiliary base station.

The execution manner of steps S405-S407 can refer to the description of step S103, which is not repeated herein.

Referring to fig. 5, a second embodiment of the present invention provides a method for switching an auxiliary base station of a terminal device, where the method is applied to a source auxiliary base station, where the source auxiliary base station is an auxiliary base station connected to the terminal device in a plurality of auxiliary base stations included in a coverage area of a main base station, and the plurality of auxiliary base stations further include a target auxiliary base station to be switched, and the method includes the following steps:

step S501, the source auxiliary base station receives first release request information sent by the main base station;

step S502, the source assisting base station directly performs data forwarding with the target assisting base station through the forwarding data receiving port of the target assisting base station, and the first release request information carries information of the forwarding data receiving port of the target assisting base station.

The method comprises the steps that since the process of switching the auxiliary base station by the terminal equipment is substantially completed by the cooperation of a main base station, a source auxiliary base station and a target auxiliary base station, the establishment process of a network model of the base station is also participated by the source auxiliary base station, and in the establishment process of a connection interface between the source auxiliary base station and the main base station, the source auxiliary base station sends coupling information between the source auxiliary base station and auxiliary base stations except the source auxiliary base station in a plurality of auxiliary base stations to the main base station so that the main base station can store the coupling information; alternatively, the first and second liquid crystal display panels may be,

For a specific method for establishing a network model of a base station, reference may be made to the description in the first embodiment, and details are not described herein again.

Further, before determining an assisting base station to switch the terminal device, the source assisting base station detects the signal quality of itself; and when the signal quality does not meet the requirement of the terminal equipment, the source auxiliary base station sends auxiliary base station switching request information to the main base station, wherein the auxiliary base station switching request information is used for indicating the main base station to switch the auxiliary base station of the terminal equipment.

As can be seen from the description of the first embodiment, since the coupled connection does not necessarily exist between the source assisting base station and the target assisting base station, the main base station may send the first release request information or the second release request information to the source assisting base station. After the main base station transmits the first release request information, the source assisting base station performs step S501.

The source assisting base station performs step S502 after receiving the first release request information. Specifically, the source assisting base station may directly forward the data of the terminal device with the target assisting base station through the forwarded data receiving port of the target assisting base station according to the information of the forwarded data receiving port of the target assisting base station in the first release request information.

If the main base station sends second release request information to the source auxiliary base station, the source auxiliary base station receives the second release request information sent by the main base station; and the source auxiliary base station forwards the data of the terminal equipment with the target auxiliary base station through a forwarded data forwarding channel in the main base station according to the second release request information, wherein the forwarded data forwarding channel comprises a forwarded data receiving port, and the second release request information carries the information of the forwarded data receiving port of the main base station.

It should be noted that, regardless of whether the source assisting base station receives the first release request message or the second release request message, the source assisting base station actually performs data forwarding with the target assisting base station through the forwarding data receiving port according to the information of the forwarding data receiving port in the release request message, except that the forwarding data receiving port may be of the target assisting base station or of the main base station.

Referring to fig. 6, a third embodiment of the present invention provides a main base station 60, where a coverage area of the main base station 60 includes a plurality of auxiliary base stations, where the plurality of auxiliary base stations include a source auxiliary base station and a target auxiliary base station to be handed over, the source auxiliary base station is an auxiliary base station connected to a terminal device, and the main base station 60 further includes:

a memory 601 for storing instructions;

a processor 602, configured to read the instructions in the memory, and execute the following processes:

and if so, sending first release request information to the source auxiliary base station so that the source auxiliary base station directly forwards the data of the terminal equipment with the target auxiliary base station through a forwarding data receiving port of the target auxiliary base station, wherein the first release request information carries information of the forwarding data receiving port of the target auxiliary base station.

Optionally, when the coupling information between the auxiliary base stations includes the coupling information between the source auxiliary base station and the target auxiliary base station, it is determined that a coupling connection exists between the source auxiliary base station and the target auxiliary base station, where the coupling information is sent by the auxiliary base station to the main base station during or after a connection interface is established between the auxiliary base station and the main base station, and the main base station stores the coupling information.

The memory 601 is connected to the processor 602 in a wired or wireless manner. The memory 601 stores instructions executable by the processor 602, and the processor 602 performs the steps of the method as described in the above-described method embodiments by executing the instructions stored by the memory 601.

Optionally, the processor 602 may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), one or more integrated circuits for controlling program execution, a hardware circuit developed by using a Field Programmable Gate Array (FPGA), and a baseband processor.

Optionally, processor 602 may include at least one processing core.

Alternatively, the memory 601 may include Read Only Memory (ROM), Random Access Memory (RAM), and disk storage. The memory 601 is also used for storing data required by the processor 602 during operation.

Optionally, the processor is configured to:

Optionally, the processor is specifically configured to:

detecting the signal quality of the source auxiliary base station, wherein when the signal quality does not meet the requirement of the terminal equipment, the auxiliary base station for switching the terminal equipment is determined, and when the signal quality meets the requirement of the terminal equipment, the auxiliary base station for not switching the terminal equipment is determined; alternatively, the first and second liquid crystal display panels may be,

As shown in fig. 7, a fourth embodiment of the present invention provides a source assisting base station 70, where the source assisting base station 70 is an assisting base station connected to a terminal device in multiple assisting base stations included in a coverage area of a main base station, the multiple assisting base stations further include a target assisting base station to be switched, and the source assisting base station 70 includes:

a memory 701 for storing instructions;

a processor 702, configured to read the instructions in the memory, and execute the following processes:

receiving first release request information sent by the main base station;

and directly forwarding the data of the terminal equipment with the target auxiliary base station through a forwarding data receiving port of the target auxiliary base station, wherein the first release request information carries the information of the forwarding data receiving port of the target auxiliary base station.

The memory 701 is connected to the processor 702 in a wired or wireless manner. The memory 701 stores instructions executable by the processor 702, and the processor 702 performs the steps of the method as described in the above-described method embodiments by executing the instructions stored by the memory 701.

Optionally, the processor 702 may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), one or more integrated circuits for controlling program execution, a hardware circuit developed by using a Field Programmable Gate Array (FPGA), and a baseband processor.

Optionally, the processor 702 may include at least one processing core.

Alternatively, memory 701 may include Read Only Memory (ROM), Random Access Memory (RAM), and disk storage. The memory 701 is also used for storing data required by the processor 702 during operation.

Optionally, the processor is further configured to,

receiving second release request information sent by the main base station;

and forwarding the data of the terminal equipment with the target auxiliary base station through a forwarded data forwarding channel in the main base station according to the second release request information, wherein the forwarded data forwarding channel comprises a forwarded data receiving port, and the second release request information carries information of the forwarded data receiving port of the main base station.

Optionally, the processor is configured to:

detecting the signal quality of the self;

Optionally, the processor is specifically configured to:

in the process of establishing a connection interface between the source auxiliary base station and the main base station, sending coupling information between the source auxiliary base station and auxiliary base stations except the source auxiliary base station in the plurality of auxiliary base stations to the main base station so that the main base station stores the coupling information; alternatively, the first and second liquid crystal display panels may be,

after the connection interface between the source auxiliary base station and the main base station is established, transmitting coupling information between the source auxiliary base station and auxiliary base stations except the source auxiliary base station in the plurality of auxiliary base stations to the main base station, so that the main base station stores the coupling information.

Referring to fig. 8, a fifth embodiment of the present invention provides a main base station 80, where a coverage area of the main base station 80 includes multiple auxiliary base stations, where the multiple auxiliary base stations include a source auxiliary base station and a target auxiliary base station to be handed over, the source auxiliary base station is an auxiliary base station connected to a terminal device, and the main base station 80 includes:

a determining module 801, configured to determine whether to handover an assisting base station of the terminal device;

a determining module 802, configured to determine, when determining to switch the assisting base station of the terminal device, whether a coupling connection exists between the source assisting base station and the target assisting base station according to coupling information stored in the main base station;

a sending module 803, configured to send, when the determination result is yes, first release request information to the source assisting base station, so that the source assisting base station directly performs data forwarding for the terminal device with the target assisting base station through the forwarding data receiving port of the target assisting base station, where the first release request information carries information of the forwarding data receiving port of the target assisting base station.

Optionally, when the coupling information between the auxiliary base stations includes the coupling information between the source auxiliary base station and the target auxiliary base station, it is determined that there is a coupling connection between the source auxiliary base station and the target auxiliary base station, where the coupling information is sent to the main base station by the auxiliary base station during or after a connection interface is established between the auxiliary base station and the main base station, and the main base station stores the coupling information.

Optionally, the main base station further includes a channel establishing module, configured to establish a forwarding data forwarding channel in the main base station and send second release request information to the source auxiliary base station when the determination result is negative, so that the source auxiliary base station performs, according to the second release request information, forwarding of the terminal device data with the target auxiliary base station through the forwarding data forwarding channel, where the forwarding data forwarding channel includes a forwarding data receiving port, and the second release request information carries information of the forwarding data receiving port of the main base station.

Optionally, the determining module is specifically configured to detect signal quality of the source assisting base station, where when the signal quality does not meet the requirement of the terminal device, the determining module determines to switch the assisting base station of the terminal device, and when the signal quality meets the requirement of the terminal device, the determining module determines not to switch the assisting base station of the terminal device; alternatively, the first and second electrodes may be,

Optionally, the determining module is specifically configured to determine whether a coupling connection exists between the source auxiliary base station and the target auxiliary base station according to coupling information stored in the determining module, where when the coupling information between the auxiliary base stations includes the coupling information between the source auxiliary base station and the target auxiliary base station, the determining module determines that the coupling connection exists between the source auxiliary base station and the target auxiliary base station.

Optionally, the coupling information between the auxiliary base stations is sent by the auxiliary base station to the main base station during or after the connection interface is established between the auxiliary base station and the main base station, and the main base station stores the coupling information.

As shown in fig. 9, a sixth embodiment of the present invention provides a source assisting base station 90, where the source assisting base station 90 is an assisting base station connected to a terminal device in a plurality of assisting base stations included in a coverage area of a main base station, and the plurality of assisting base stations further include a target assisting base station to be switched, and the source assisting base station 90 includes:

a receiving module 901, configured to receive first release request information sent by the master base station;

a data transmission module 902, configured to directly forward the data of the terminal device with the target assisting base station through the forward data receiving port of the target assisting base station, where the first release request information carries information of the forward data receiving port of the target assisting base station.

Optionally, the data transmission module is further configured to receive second release request information sent by the master base station;

Optionally, the source assisting base station further includes a detection module, configured to detect signal quality of the source assisting base station;

Optionally, the source assisting base station further includes a sending module, configured to send, to the main base station, coupling information between the source assisting base station and an assisting base station, except the source assisting base station, in the process of establishing a connection interface between the source assisting base station and the main base station, so that the main base station stores the coupling information; alternatively, the first and second electrodes may be,

after the connection interface between the source auxiliary base station and the main base station is established, transmitting coupling information between the source auxiliary base station and auxiliary base stations except the source auxiliary base station to the main base station, so that the main base station stores the coupling information.

A seventh embodiment of the present invention provides a computer-readable storage medium, including:

the computer readable storage medium has stored thereon computer instructions which, when executed by a processor, carry out the steps of the method as described above in the first implementation.

An eighth embodiment of the present invention provides a computer-readable storage medium, including:

the computer readable storage medium has stored thereon computer instructions which, when executed by a processor, implement the steps of the method as described in implementation two above.

The technical scheme in the embodiment of the invention at least has the following technical effects or advantages:

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for switching auxiliary base stations of a terminal device is applied to a main base station, the coverage area of the main base station includes a plurality of auxiliary base stations, the plurality of auxiliary base stations include a source auxiliary base station and a target auxiliary base station to be switched, the source auxiliary base station is an auxiliary base station connected with the terminal device, and the method includes:

establishing an Xn interface between a first auxiliary base station and a second auxiliary base station, sending request information for establishing an X2 interface to the first auxiliary base station or the second auxiliary base station, and receiving response information of completing establishment of an X2 interface sent to a main base station after the first auxiliary base station or the second auxiliary base station establishes an X2 interface with the main base station according to the request information; wherein the response information carries coupling information between the corresponding auxiliary base station and other auxiliary base stations; alternatively, the first and second electrodes may be,

the main base station sends request information for establishing an X2 interface to the first auxiliary base station or the second auxiliary base station, and receives response information sent by the first auxiliary base station or the second auxiliary base station for completing establishment of an X2 interface after establishing an X2 interface with the main base station according to the request information; establishing an Xn interface between the first auxiliary base station and the second auxiliary base station, and receiving update information sent by the first auxiliary base station or the second auxiliary base station; wherein the update information carries coupling information between the corresponding assisting base station and other assisting base stations;

2. The method of claim 1, wherein when the coupling information between the assisting base stations includes coupling information between the source assisting base station and the target assisting base station, then a coupled connection exists between the source assisting base station and the target assisting base station;

3. The method of claim 1, wherein after the master base station determines whether a coupled connection exists between a source assisting base station and a target assisting base station, the method further comprises:

4. The method of claim 1 or 3, wherein the master base station determining whether to switch the secondary base station of the terminal device comprises:

5. A method for switching an auxiliary base station of a terminal device is applied to a source auxiliary base station, wherein the source auxiliary base station is an auxiliary base station connected with the terminal device in a plurality of auxiliary base stations included in a coverage area of a main base station, and the plurality of auxiliary base stations further include a target auxiliary base station to be switched, and the method comprises the following steps:

receiving request information for establishing an X2 interface sent by the main base station, and sending response information for completing establishment of an X2 interface to the main base station after establishing an X2 interface with the main base station according to the request information; wherein the response information carries coupling information between the source assisting base station and other assisting base stations; alternatively, the first and second electrodes may be,

receiving request information for establishing an X2 interface sent by the main base station, and sending response information for completing the establishment of an X2 interface to the main base station after establishing an X2 interface with the main base station according to the request information; after an Xn interface established between other auxiliary base stations, sending update information to the main base station; wherein the update information carries coupling information between the source assisting base station and other assisting base stations;

6. The method of claim 5, wherein the method further comprises:

7. The method of claim 6, wherein the source assisting base station, prior to receiving the first release request information or the second release request information, further comprises:

8. The method according to claim 5 or 6, wherein during the connection interface establishment procedure between the source-assisting base station and the main base station, the source-assisting base station transmits coupling information between the source-assisting base station and an assisting base station other than the source-assisting base station among the plurality of assisting base stations to the main base station, so that the main base station holds the coupling information; alternatively, the first and second electrodes may be,

9. A master base station, wherein a coverage area of the master base station includes a plurality of secondary base stations, the plurality of secondary base stations include a source secondary base station and a target secondary base station to be handed over, the source secondary base station is a secondary base station connected to a terminal device, and the master base station further includes:

a memory to store instructions;

when the auxiliary base station of the terminal equipment is determined to be switched, judging whether a coupling connection exists between the source auxiliary base station and the target auxiliary base station or not according to coupling information stored in the auxiliary base station;

10. The master base station of claim 9, wherein when the coupling information between the assisting base stations includes the coupling information between the source assisting base station and the target assisting base station, it is determined that a coupled connection exists between the source assisting base station and the target assisting base station;

11. The master base station of claim 9, wherein the processor is to:

after judging whether a coupling connection exists between a source auxiliary base station and a target auxiliary base station, if the judging result is negative, the main base station establishes a forwarded data transfer channel in the main base station and sends second release request information to the source auxiliary base station so that the source auxiliary base station forwards data of the terminal equipment with the target auxiliary base station through the forwarded data transfer channel according to the second release request information, wherein the forwarded data transfer channel comprises a forwarded data receiving port, and the second release request information carries information of the forwarded data receiving port of the main base station.

12. The master base station of claim 9 or 11, wherein the processor is specifically configured to:

13. A source assisting base station, wherein the source assisting base station is an assisting base station connected to a terminal device in a plurality of assisting base stations included in a coverage area of a main base station, the plurality of assisting base stations further include a target assisting base station to be switched, and the source assisting base station includes:

a memory to store instructions;

receiving request information for establishing an X2 interface sent by the main base station, and sending response information for completing establishment of an X2 interface to the main base station after establishing an X2 interface with the main base station according to the request information; after an Xn interface established between other auxiliary base stations, sending update information to the main base station; wherein the update information carries coupling information between the source assisting base station and other assisting base stations;

receiving first release request information sent by the main base station;

and directly forwarding terminal equipment data with the target auxiliary base station through a forwarding data receiving port of the target auxiliary base station, wherein the first release request information carries information of the forwarding data receiving port of the target auxiliary base station.

14. The source assisted base station of claim 13, wherein the processor is further configured to,

receiving second release request information sent by the main base station;

15. A source assisted base station according to claim 13 or 14, wherein the processor is operable to:

detecting the signal quality of the self;

16. A source assisted base station according to claim 13 or 14, wherein the processor is specifically configured to:

in the process of establishing a connection interface between the source auxiliary base station and the main base station, sending coupling information between the source auxiliary base station and auxiliary base stations except the source auxiliary base station in the plurality of auxiliary base stations to the main base station so that the main base station stores the coupling information; alternatively, the first and second electrodes may be,

17. A master base station, wherein a coverage area of the master base station includes a plurality of secondary base stations, the plurality of secondary base stations include a source secondary base station and a target secondary base station to be handed over, the source secondary base station is a secondary base station connected to a terminal device, and the master base station includes:

a determining module, configured to establish an Xn interface between a first assisting base station and a second assisting base station, send request information for establishing an X2 interface to the first assisting base station or the second assisting base station, and receive response information that is sent to the main base station after the first assisting base station or the second assisting base station establishes an X2 interface with the main base station according to the request information and then completes establishment of an X2 interface; wherein the response information carries coupling information between the corresponding auxiliary base station and other auxiliary base stations; or the main base station sends request information for establishing an X2 interface to the first auxiliary base station or the second auxiliary base station, and receives response information sent by the first auxiliary base station or the second auxiliary base station for completing the establishment of an X2 interface after the first auxiliary base station or the second auxiliary base station establishes an X2 interface with the main base station according to the request information; establishing an Xn interface between the first auxiliary base station and the second auxiliary base station, and receiving update information sent by the first auxiliary base station or the second auxiliary base station; wherein the update information carries coupling information between the corresponding assisting base station and other assisting base stations; and the number of the first and second groups,

18. A source assisting base station, wherein the source assisting base station is an assisting base station connected to a terminal device in a plurality of assisting base stations included in a coverage area of a main base station, the plurality of assisting base stations further include a target assisting base station to be switched, and the source assisting base station includes:

a receiving module, configured to receive request information for establishing an X2 interface sent by the master base station, and send response information indicating that establishment of an X2 interface is completed to the master base station after establishing an X2 interface with the master base station according to the request information; wherein the response information carries coupling information between the source assisting base station and other assisting base stations; or receiving request information for establishing an X2 interface sent by the main base station, and sending response information for completing the establishment of an X2 interface to the main base station after establishing an X2 interface with the main base station according to the request information; after an Xn interface established between other auxiliary base stations, sending update information to the main base station; wherein the update information carries coupling information between the source assisting base station and other assisting base stations; receiving first release request information sent by the main base station;

19. A computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method according to any one of claims 1-4.

20. A computer-readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method according to any one of claims 5-8.