WO2016197620A1

WO2016197620A1 - Method, device, core network, system and media for terminal switching between base stations

Info

Publication number: WO2016197620A1
Application number: PCT/CN2016/073788
Authority: WO
Inventors: 宋涛; 陈鑫
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-06-12
Filing date: 2016-02-15
Publication date: 2016-12-15
Also published as: CN106304220B; CN106304220A

Abstract

Provided are a method, a device, a core network and a system for terminal switching between base stations in an LTE system. The method for terminal switching between base stations in an LTE system comprises: when detecting that a terminal switches from a source base station to a target base station and determining that the terminal fails to switch from the source base station to the target base station, generating a link keep-alive notification between the source base station and the terminal; and sending the link keep-alive notification to the source base station so as to keep a link between the source base station and the terminal. Also provided is a computer storage medium.

Description

Method, device, core network, system and medium for switching terminals between base stations

Technical field

The present invention relates to the field of data communication in an LTE mobile communication system, and in particular, to a method, an apparatus, a core network, a system, and a storage medium for a terminal to switch between base stations in an LTE system.

Background technique

In the LTE mobile communication system, the S1 handover is a service processing method for performing service migration between the base stations by means of the core network element. After the normal S1 handover is complete, the core network notifies the source-side base station to initiate the context release. If the S1 handover fails, the core network may notify the source side to initiate the context release, or the source-side base station actively releases the information.

The above processing method of switching the failure scenario is problematic. Most of the handover scenarios occur not because the source side signal is weak, but because the destination base station signal is stronger and reaches the handover threshold. That is to say, the user performs the service under the source side base station signal, because the handover fails to initiate the context release. It is equivalent to active call drop, which is not good for the user. For other scenarios, if the core network does not have any notification, in general, the source-side base station is still considered to be in the handover process because it lacks understanding of the operating state of the core network and the target base station, because it does not know the handover situation of the terminal at the destination base station, and is a resource. Recycling is safe, and it will initiate a contextual release, which is still equivalent to active dropped calls.

Summary of the invention

An embodiment of the present invention is to provide a method, an apparatus, a core network, a system, and a computer storage medium for a terminal to switch between base stations in an LTE system, so as to at least partially solve the problem that the user performs the service under the signal of the source side base station, because the handover is performed. Failure to initiate a context release is equivalent to an active call drop.

The embodiment of the invention provides a method for a terminal to switch between base stations in an LTE system, including:

Detecting that the terminal switches from the source base station to the target base station, and determines that the terminal fails to switch from the source base station to the target base station, and generates a link keep-alive notification between the source base station and the terminal;

Transmitting the link keep-alive notification to the source base station to maintain the link between the source base station and the terminal.

The step of detecting that the terminal switches from the source base station to the target base station includes:

Obtaining a measurement report reported by the terminal through the source base station;

The terminal is detected to switch from the source base station to the target base station according to the measurement report.

The step of determining that the terminal fails to switch from the source base station to the target base station includes:

When it is detected that the terminal fails to establish a link on the target base station side, it is determined that the terminal fails to switch from the source base station to the target base station.

The step of sending the link keep-alive notification to the source base station includes:

The link keep-alive notification is sent to the source base station through the new interface.

After the sending the link keep-alive notification to the source base station, the method further includes:

Notifying the target base station to release the context of the link switch.

The switching of the terminal from the source base station to the target base station is based on switching of the S1 interface between the source base station and the target base station.

The embodiment of the invention further provides a device for switching between terminals in an LTE system, which is applied to the core network side, and includes:

The detecting module is configured to detect that the terminal switches from the source base station to the target base station, and determines that the terminal fails to switch from the source base station to the target base station, and generates a link keep-alive notification between the source base station and the terminal;

The sending module is configured to send a link keep-alive notification to the source base station, so that the link between the source base station and the terminal is maintained.

The detection module includes:

Obtaining a sub-module, configured to obtain a measurement report reported by the terminal through the source base station;

The first detecting submodule is configured to detect, according to the measurement report, that the terminal switches from the source base station to the target base station.

The detection module further includes:

The second detecting submodule is configured to detect that the terminal fails to establish a link on the target base station side, and determines that the terminal fails to switch from the source base station to the target base station.

The sending module is configured to send the link keep-alive notification to the source base station by using a new interface.

The sending module further includes:

The link release notification module is configured to notify the target base station to release the context of the link handover.

The embodiment of the present invention further provides a core network, including: a device for switching a terminal between base stations according to the foregoing embodiment.

The embodiment of the present invention further provides a system for a terminal to switch between base stations in an LTE system, including: a source base station, a target base station, and a core network, where the core network is the core network described in the foregoing embodiment.

The embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to perform a method for switching a terminal between base stations in the LTE system.

In the LTE system of the embodiment of the present invention, in a method, an apparatus, a core network, a system, and a computer storage medium for handover between base stations, a source base station to be generated by a core network is determined when a handover failure is determined from a source base station to a target base station. The link keep-alive notification between the terminals is sent to the source base station, thereby realizing the maximum privilege of the user LTE service after the handover fails, improving the user experience, enhancing the stability of the base station system, and reducing the unnecessary service release process.

DRAWINGS

FIG. 1 is a basic step of a method for a terminal to switch between base stations in an LTE system according to an embodiment of the present invention; Schematic diagram

FIG. 2 is a schematic structural diagram of a device for switching between terminals in an LTE system according to an embodiment of the present invention.

detailed description

The embodiment of the present invention is directed to the problem that the user performs the service under the signal of the source side base station in the prior art, but the context is released because the handover fails, which is equivalent to the active call drop, which makes the user feel bad, and provides an LTE. The method, device, core network and system for the terminal to switch between the base stations in the system, when the handover from the source base station to the target base station fails to be determined, the link keepalive notification between the source base station and the terminal generated by the core network is sent to The source base station realizes the maximum privilege of the user LTE service after the handover fails, improves the user experience, enhances the stability of the base station system, and reduces unnecessary service release processes.

The detailed description of the preferred embodiments of the present invention is intended to It is not intended to limit the invention.

As shown in FIG. 1 , an embodiment of the present invention provides a method for a terminal to switch between base stations in an LTE system, including:

Step 11: When detecting that the terminal switches from the source base station to the target base station, and determines that the terminal fails to switch from the source base station to the target base station, the link keep-alive notification between the source base station and the terminal is generated;

Step 12: Send the link keep-alive notification to the source base station, so that the link between the source base station and the terminal is maintained.

In the LTE system, the method, the device, the core network, and the system for switching between the base stations in the LTE system, when the handover from the source base station to the target base station fails, the source network base station and the terminal generated by the core network are The link keep-alive notification is sent to the source base station, thereby realizing the maximum privilege of the user LTE service after the handover fails, improving the user experience, enhancing the stability of the base station system, and reducing the unnecessary service release process.

In the above embodiment of the present invention, the handover of the terminal from the source base station to the target base station is based on switching of the S1 interface between the source base station and the target base station.

Optionally, when detecting that the terminal is handed over from the source base station to the target base station, and determining that the terminal fails to switch from the source base station to the target base station, the link between the source base station and the terminal is generated. In the method of the notification, the detecting that the terminal switches from the source base station to the target base station in step 11 may include:

Step 111: Acquire a measurement report reported by the terminal through the source base station.

Step 112: According to the measurement report, detecting that the terminal switches from the source base station to the target base station.

The step of determining that the terminal fails to switch from the source base station to the target base station in step 11 may include:

Step 113: When it is detected that the terminal fails to establish a link on the target base station side, it is determined that the handover of the terminal from the source base station to the target base station fails.

Specifically, the handover failure scenario in step 113 is not limited to the scenario in which the terminal fails to establish a link on the target base station side, and other handover scenarios are also applicable.

Optionally, in the method for sending the link keep-alive notification to the source base station, and maintaining the link between the source base station and the terminal, the step 12 may include:

Step 121: Send the link keep-alive notification to the source base station by using a new interface. The processing mode of the link keepalive notification in step 121 is not limited to the newly added interface. The core network of the other link keepalive notification processing mode is also supported.

Optionally, after the link keepalive notification is sent to the source base station, the method further includes:

In step 13, the target base station is notified to release the context of the link handover.

According to the foregoing method provided by the embodiment of the present invention, when the handover from the source base station to the target base station fails, the link keepalive notification between the source base station and the terminal generated by the core network is sent to the source base station, thereby implementing the handover. After the failure, the LTE service of the user is maximized, the user experience is improved, the stability of the base station system is enhanced, and the unnecessary service release process is reduced.

As shown in FIG. 2, an embodiment of the present invention further provides an apparatus for switching a terminal between base stations in an LTE system, including:

The detecting module 21 is configured to detect that the terminal switches from the source base station to the target base station, and determines that the terminal fails to switch from the source base station to the target base station, and generates a link keep-alive notification between the source base station and the terminal;

The sending module 22 is configured to send a link keep-alive notification to the source base station, so that the link between the source base station and the terminal is maintained.

The detecting module 21 of the embodiment of the present invention may correspond to a processor or a processing circuit; the processor may include a processing structure such as a central processing unit, a digital signal processor, a microprocessor or a programmable array; and the processing circuit may include dedicated integrated circuit. The sending module 22 may correspond to a communication interface, and may correspond to an air interface in the base station in this embodiment.

The apparatus for switching between the base stations in the LTE system in this embodiment may be applied to the core network element.

In some embodiments, in the foregoing embodiment of the present invention, the handover of the terminal from the source base station to the target base station is based on switching of the S1 interface between the source base station and the target base station.

In other embodiments, the detecting module 21 described in the foregoing embodiment of the present invention includes:

Specifically, the detecting module 21 described in the foregoing embodiment of the present invention further includes:

Specifically, the handover failure scenario in the second detection sub-module of the detection module 21 in the foregoing embodiment of the present invention is not limited to the scenario in which the terminal fails to establish a link on the target base station side, and other handover scenarios are also applicable.

Specifically, the sending module 22 in the foregoing embodiment of the present invention is configured to send the link keep-alive notification to the source base station by using a new interface.

Specifically, the processing manner of the keep-alive notification in the sending module 22 in the foregoing embodiment of the present invention is not limited to the newly added interface, and the processing manner of the other link keep-alive notification core network is also supported.

Specifically, the sending module 22 in the foregoing embodiment of the present invention further includes:

It should be noted that the device is a device corresponding to the above method, and all implementation embodiments of the above method are applicable to the embodiment of the device, and the same technical effects can be achieved.

An embodiment of the present invention further provides a core network, including the apparatus for switching between terminals in a terminal according to the foregoing embodiment.

The embodiment of the invention further provides a system for handover between terminals in an LTE system, comprising: a source base station, a target base station, and a core network.

Specifically, the core network is a core network as described in the foregoing embodiment.

The embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, where the computer executable instructions are used to perform the method for switching a terminal between base stations in the LTE system, for example, Executing the computer executable instructions can perform the method illustrated in FIG.

The computer storage medium of the embodiment may be a storage medium such as an optical disk, a hard disk, or a magnetic disk. For example, the computer storage medium in this embodiment may be a non-transitory storage medium.

The above is a preferred embodiment of the present invention, and it should be noted that modifications made in accordance with the principles of the present invention are understood to fall within the scope of the present invention.

Claims

A method for switching a terminal between base stations in a long term evolution LTE system includes:

Detecting that the terminal switches from the source base station to the target base station, and determines that the terminal fails to switch from the source base station to the target base station, and generates a link keep-alive notification between the source base station and the terminal;

Transmitting the link keep-alive notification to the source base station to maintain the link between the source base station and the terminal.
The method for switching between terminals in a base station according to claim 1, wherein the step of detecting that the terminal switches from the source base station to the target base station comprises:

Obtaining a measurement report reported by the terminal through the source base station;

The terminal is detected to switch from the source base station to the target base station according to the measurement report.
The method for switching between terminals in a base station according to claim 1, wherein the step of determining that the terminal fails to switch from the source base station to the target base station comprises:

When it is detected that the terminal fails to establish a link on the target base station side, it is determined that the terminal fails to switch from the source base station to the target base station.
The method for switching a terminal between base stations according to claim 1, wherein the step of transmitting the link keep-alive notification to the source base station comprises:

The link keep-alive notification is sent to the source base station through the new interface.
The method for the terminal to switch between the base stations according to claim 1, wherein after the transmitting the link keep-alive notification to the source base station, the method further includes:

Notifying the target base station to release the context of the link switch.
The method for handover between base stations according to any one of claims 1 to 5, wherein the handover of the terminal from the source base station to the target base station is based on handover of an S1 interface between the source base station and the target base station.
A device for switching between terminals in a long-term evolution LTE system is applied to a core network side, and includes:

a detecting module configured to detect that the terminal switches from the source base station to the target base station, and determines the terminal The handover from the source base station to the target base station fails, and a link keep-alive notification between the source base station and the terminal is generated;

The sending module is configured to send a link keep-alive notification to the source base station, so that the link between the source base station and the terminal is maintained.
The apparatus for switching between terminals in a base station according to claim 7, wherein the detecting module comprises:

Obtaining a sub-module, configured to obtain a measurement report reported by the terminal through the source base station;

The first detecting submodule is configured to detect, according to the measurement report, that the terminal switches from the source base station to the target base station.
The apparatus for switching between the base stations by the terminal according to claim 8, wherein the detecting module further comprises:

The second detecting submodule is configured to detect that the terminal fails to establish a link on the target base station side, and determines that the terminal fails to switch from the source base station to the target base station.
The apparatus for switching between base stations according to claim 7, wherein the sending module is configured to send the link keep-alive notification to the source base station through a new interface.
The apparatus for switching between base stations according to claim 10, wherein the sending module further comprises:

The link release notification module is configured to notify the target base station to release the context of the link handover.
The apparatus for switching between base stations according to any one of claims 7 to 11, wherein the handover of the terminal from the source base station to the target base station is based on switching of the S1 interface between the source base station and the target base station.
A core network, comprising: means for switching a terminal between base stations according to any one of claims 7 to 12.
A system for switching a terminal between base stations in a long term evolution LTE system, comprising: a source base station, a target base station, and a core network, wherein the core network is the core network according to claim 13.
A computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 1 to 6.