WO2018058876A1

WO2018058876A1 - Network handoff method and apparatus

Info

Publication number: WO2018058876A1
Application number: PCT/CN2017/073040
Authority: WO
Inventors: 王聪亮
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-09-27
Filing date: 2017-02-07
Publication date: 2018-04-05
Also published as: CN107872858A

Abstract

A network handoff method and apparatus. A method executed by a user equipment comprises: obtaining available network information after registration with a 3GPP network; reporting the available network information to a core network device, and receiving information of a designated Non-3GPP network returned by the core network device according to the available network information; and during network handoff, if handoff to a Non-3GPP network is determined, handing off from the 3GPP network to the designated Non-3GPP network according to the information of the designated Non-3GPP network. A method executed by a core network device comprises: receiving available network information reported by a user equipment; determining network quality information of each Non-3GPP network according to information of the Non-3GPP network; selecting a Non-3GPP network for designation according to the network quality information of each Non-3GPP network; and sending information of the designated Non-3GPP network to the user equipment.

Description

Network switching method and device

Technical field

This application relates to, but is not limited to, the field of communication technology.

Background technique

With the rapid development of services such as VOWIFI (Voice over Wireless Fidelity), some services (such as voice services) of the 3GPP (3rd Generation Partnership Project) mobile network have been rapidly extended to Non-3GPP (non-3GPP). ) The network is coming.

The 3GPP network includes, for example, LTE (Long Term Evolution), WCDMA (Wideband Code Division Multiple Access), and TD-SCDMA (Time Division-Synchronous Code Division Multiple Access). And GSM (Global System for Mobile Communication) network.

The Non-3GPP network includes, for example, WLAN (Wireless Local Area Networks), HRPD (High Rate Packet Data), and WiMAX (Worldwide Interoperability for Microwave Access).

In the related art, the s2b interface is applied to the interworking between the non-trusted domain network and the EPC (4G core network), and the WLAN network accesses the PDN GW (Packet Data Network Gateway) through the ePDG (evolutionPacket Data Gateway). Data gateway), through ePDG to achieve interworking between the non-trusted domain access network and the EPC. The handover performed in the s2b mode is based on the handover of the user equipment, and the core network side does not measure the Non-3GPP network, and the user equipment performs measurement according to a preset handover rule or according to a network signal threshold value acquired from the network side. The service is switched between 3GPP and Non-3GPP networks. However, for a non-trusted Non-3GPP network, such as a WLAN, the user equipment can only obtain the user equipment to the ePDG. The quality of the link from the ePDG to the core network cannot be known. Therefore, the user equipment cannot be viewed from a global perspective. In order to select the optimal Non-3GPP network, when switching, the handover success rate is difficult to control, and the continuity and quality of the service cannot be guaranteed.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The present invention provides a network switching method and apparatus, which can not guarantee the success rate of handover when the user equipment in the related art switches the link quality information of the ePDG to the core network, and cannot guarantee the continuation of the service. Sexual and quality issues.

A network switching method is performed by a user equipment, and the method includes:

Acquiring available network information after registering with the 3rd Generation Partnership Project 3GPP network; wherein the available network information includes information of one or more available non-3rd Generation Partnership Project Non-3GPP networks;

And reporting the available network information to the core network device, and receiving information of the specified Non-3GPP network returned by the core network device according to the available network information;

When performing network handover, if it is determined to switch to a Non-3GPP type network, the 3GPP network is handed over to the designated Non-3GPP network according to the information of the designated Non-3GPP network.

Optionally, the reporting the available network information to the core network device includes:

The available network information is reported to the core network device by measurement report signaling.

Optionally, the determining to switch to the Non-3GPP network includes:

Perform network search when performing network switching;

In the searched network, if only the searched Non-3GPP network is available, or if the searched Non-3GPP network has the highest preset priority, it is determined to switch to the Non-3GPP type network.

Optionally, the types of the Non-3GPP network include: a trusted Non-3GPP network and a non-trusted Non-3GPP network.

A network switching method is performed by a core network device, and the method includes:

Receiving available network information reported by the user equipment; wherein the available network information includes one Information on one or more available non-3rd Generation Partnership Program Non-3GPP networks;

Determining network quality information of each of the Non-3GPP networks according to information of each of the Non-3GPP networks;

Selecting a designated Non-3GPP network according to network quality information of each of the Non-3GPP networks;

Sending information of the specified Non-3GPP network to the user equipment.

Optionally, the receiving, by the user equipment, the available network information, including:

Receiving measurement report signaling reported by the user equipment;

Extracting the available network information in the measurement report signaling.

A network switching device is disposed in a user equipment, where the device includes:

An obtaining module, configured to: after registering to the 3rd Generation Partnership Project 3GPP network, obtain available network information; wherein the available network information includes one or more available non-3rd Generation Partnership Project Non-3GPP networks Information;

a communication module, configured to: report the available network information acquired by the acquiring module to a core network device, and receive information of the specified Non-3GPP network returned by the core network device according to the available network information;

a switching module, configured to: when performing network switching, if it is determined to switch to a Non-3GPP type network, switch the 3GPP network to the according to the information of the specified Non-3GPP network received by the communication module Specify the Non-3GPP network.

Optionally, the communication module reports the available network information acquired by the acquiring module to the core network device, including:

The available network information acquired by the acquiring module is reported to the core network device by using measurement report signaling.

Optionally, the switching module determines to switch to a Non-3GPP type network, including:

Perform network search when performing network switching;

In the searched network, if only the searched Non-3GPP network is available, or if search The selected Non-3GPP network has the highest preset priority, and then determines the network handover to the Non-3GPP type.

A network switching device is disposed in a core network device, where the device includes:

a receiving module, configured to: receive available network information reported by the user equipment, where the available network information includes information of one or more available non-3rd generation partner program Non-3GPP networks;

a determining module, configured to: determine network quality information of each of the Non-3GPP networks according to information about each of the Non-3GPP networks received by the receiving module;

a selection module, configured to: select a designated Non-3GPP network according to network quality information of each of the Non-3GPP networks determined by the determining module;

And a sending module, configured to: send information of the specified Non-3GPP network selected by the selecting module to the user equipment.

Optionally, the receiving module receives the available network information reported by the user equipment, including:

Receiving measurement report signaling reported by the user equipment;

The network switching method and device provided by the embodiment of the present invention, the user equipment autonomously reports the information of the available Non-3GPP network, and the core network device does not need to deliver the command for measuring the Non-3GPP network, and the core network device according to the reported Non-3GPP network. The information is determined by the optimal Non-3GPP network. When the user equipment needs to switch to the Non-3GPP network, the network switching can be performed only according to the preferred Non-3GPP network determined by the core network device. The technical solution increases the autonomy and flexibility of the user equipment, and avoids the problem caused by the user equipment switching in the s2b mode when the link quality information of the ePDG to the core network device is unknown.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

FIG. 1 is a flowchart of a network switching method according to an embodiment of the present invention;

2 is a flowchart of another network switching method according to an embodiment of the present invention;

FIG. 3 is a flowchart of still another network switching method according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a network switching apparatus according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of another network switching apparatus according to an embodiment of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments herein may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system in accordance with a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

In the s2b mode, the user equipment of the embodiment of the present invention actively reports the information of the available Non-3GPP network to the core network device, so that the core network device determines the optimal Non-3GPP network according to the information of the Non-3GPP network, and The optimal Non-3GPP network informs the user equipment that when the user equipment needs to handover to the Non-3GPP network, it directly switches to the optimal Non-3GPP network.

The core network device of the embodiment of the present invention does not need to send a command for measuring the Non-3GPP network, and the user equipment independently reports the information of the (available) Non-3GPP network with good network conditions, and the core network device performs global decision to determine the user. The device-optimized Non-3GPP network can perform network switching according to the decision of the core network device when the user equipment needs to switch to the Non-3GPP network, thereby increasing the autonomy and flexibility of the user equipment, and avoiding the user equipment being in the right The problem caused by the handover when the link quality information of the ePDG to the core network device is unknown is improved, the handover success rate is improved, and the continuity and quality of the service are ensured.

The network switching method and apparatus provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings and some embodiments. It is to be understood that the embodiments described herein are merely illustrative of the invention and are not limiting of the invention.

The embodiment of the present invention provides a network switching method, where the execution subject of the embodiment of the present invention is a user equipment. FIG. 1 is a flowchart of a network switching method according to an embodiment of the present invention. The method provided by the embodiment of the present invention may include the following steps, that is, S110-S130:

S110. Acquire available network information after registering to the 3GPP network, where the available network information includes information of one or more available Non-3GPP networks.

Types of networks include: 3GPP type and Non-3GPP type. The 3GPP type network includes, for example, a 3GPP network such as an LTE network, a GSM network, and the like, and the Non-3GPP type network includes, for example, a Non-3GPP network such as a WLAN network, an HRPD network, or the like.

Optionally, in the embodiment of the present invention, the types of the Non-3GPP network include: a trusted Non-3GPP network and a non-trusted Non-3GPP network. The trusted Non-3GPP network refers to the Trusted Non-3GPP network, and the generally trusted Non-3GPP network is a WLAN network set up by the operator; the non-trusted Non-3GPP network refers to the Untrusted Non-3GPP network, which is usually not The Non-3GPP network of the letter is a WLAN network set up by non-operators. In practical applications, user equipment can often search for multiple WLAN networks.

Optionally, in the embodiment of the present invention, the available Non-3GPP network refers to a Non-3GPP network whose network quality meets the preset Non-3GPP network access conditions. The network quality is for example the signal strength. The Non-3GPP network access condition is, for example, that the signal strength of the Non-3GPP network is greater than a preset Non-3GPP network signal strength threshold.

Optionally, in the embodiment of the present invention, the information of the Non-3GPP network includes, but is not limited to, a name of the Non-3GPP network, an SSID (Service Set Identifier), and a password corresponding to the SSID.

S120: Report the available network information to the core network device, and receive information about the specified Non-3GPP network returned by the core network device according to the available network information.

Optionally, in the embodiment of the present invention, the core network device may be, for example, an MME (Mobility Management Entity Function) device, an SGSN (Serving GPRS Support Node), or an eNB (evolved Node B, Evolved base station).

Optionally, in the embodiment of the present invention, the user equipment may use the available network periodically or in real time. The information is reported to the core network device.

Optionally, in the embodiment of the present invention, the method for reporting the available network information to the core network device may be: reporting the available network information to the core network device by using measurement report signaling. In another implementation manner of the embodiment of the present invention, a message may be added, and the available network information is reported to the core network device by using the new message.

S130. When performing network handover, if it is determined to switch to a Non-3GPP type network, the 3GPP network is handed over to the designated Non-3GPP network according to the information of the designated Non-3GPP network.

When the handover threshold is reached, the network switching starts; when the network handover is performed, the user equipment performs a network search; in the searched network, according to the network quality and the preset handover rule, it is determined to switch to or from the 3GPP type network. Non-3GPP type network switching.

Optionally, in the embodiment of the present invention, the network quality may include: a signal strength.

Optionally, in the embodiment of the present invention, the handover rule includes: when performing network handover, the user equipment performs a network search; if only the searched Non-3GPP network is available, determining to switch to a Non-3GPP type network; or If the searched Non-3GPP network has the highest preset priority, it is determined to switch to the Non-3GPP type network. In practical applications, the corresponding priority may be set for the type of the network, and the corresponding priority may be set for each Non-3GPP network and each 3GPP network. For example, the Non-3GPP type is set to high priority and the 3GPP type is low priority. Another example is: setting the WLAN network as the high priority, the LTE network as the secondary priority, and the GSM network as the low priority.

In the process of network switching, you can include the following three steps:

In step 1, the corresponding priority is set in advance for the type of the network.

The priority of the Non-3GPP type can be set higher than the priority of the 3GPP type. For example, the switching threshold of the Non-3GPP network is low.

Step 2: In the searched network, select an available network according to the signal strength of each network.

Available networks include: available Non-3GPP networks and available 3GPP networks.

The available Non-3GPP network refers to a Non-3GPP network whose network quality conforms to the preset Non-3GPP network access conditions.

The available 3GPP network refers to 3GPP whose network quality conforms to the preset 3GPP network access conditions. The internet. For example, the signal strength of the 3GPP network is greater than a preset 3GPP network signal strength threshold.

Step 3: Determine the target network type of the handover according to the network quality and priority of the available network.

In the case where the available networks are both Non-3GPP networks, the handover to the Non-3GPP type network is determined, and the handover is selected to the Non-3GPP network designated by the core network device.

In the case where the available networks are all 3GPP networks, the 3GPP type network with the best network quality is selected for handover. For example: Select the 3GPP network with the highest signal strength.

In the case where the available network includes both the Non-3GPP network and the 3GPP network, if the priority of the 3GPP type network is higher than the priority of the Non-3GPP type network, the 3GPP type network with the best network quality is selected. Handover; if the priority of the Non-3GPP type network is higher than the priority of the 3GPP type network, then the network handover to the Non-3GPP type is determined, and the Non-3GPP network designated by the core network device is selected for handover.

The network switching method provided by the embodiment of the present invention, the user equipment autonomously reports the information of the available Non-3GPP network through the user equipment, and the core network device does not need to deliver the command for measuring the Non-3GPP network, and the core network device reports the reported Non-3GPP according to the core network device. The information of the network determines the optimal Non-3GPP network. When the user equipment needs to switch to the Non-3GPP network, the network switching can be performed only according to the preferred Non-3GPP network determined by the core network device. The user equipment in the s2b mode can solve the problem that the user equipment cannot grasp the overall link quality of the non-trusted Non-3GPP network, and the handover fails or the service quality is degraded. The user equipment in the embodiment of the present invention reports the Non-3GPP network autonomously. The information is limited by the network, and the user equipment can switch more autonomously and flexibly, thereby improving the handover success rate and ensuring better service quality.

The embodiment of the invention provides a network switching method. The execution entity of the embodiment of the present invention is a core network device. FIG. 2 is a flowchart of another network switching method according to an embodiment of the present invention. The method provided by the embodiment of the present invention may include the following steps, that is, S210-S240:

S210. Receive available network information reported by the user equipment, where the available network information includes information of one or more available Non-3GPP networks.

Optionally, in the embodiment of the present invention, receiving the available network information reported by the user equipment The method may include: receiving measurement report signaling reported by the user equipment; and extracting available network information in the measurement report signaling. In another implementation manner of the embodiment of the present invention, if the user equipment reports the available network information to the core network device by adding a message, the core network device device receives the new message, and extracts the available network in the new message. information.

S220. Determine network quality information of each Non-3GPP network according to information of each Non-3GPP network.

Optionally, in the embodiment of the present invention, the network quality information includes, but is not limited to, a signal strength, a packet loss rate, a network delay, and a history switching success rate. The network quality information of the Non-3GPP network can be measured, obtained, or queried by other network devices.

The packet loss rate and network delay can be measured by means of the Ping packet. The historical handover success rate can be obtained by querying the number of successful handovers of the Non-3GPP network and the total number of handovers.

S230. Select, according to network quality information of each Non-3GPP network, a designated Non-3GPP network.

Optionally, in the embodiment of the present invention, the designated Non-3GPP network is a Non-3GPP network whose network quality meets preset handover conditions. The switching condition is, for example, that the signal strength is greater than the first threshold, the packet loss rate is less than the second threshold, the network delay is less than the third threshold, and/or the historical handover success rate is greater than the fourth threshold.

Optionally, in the embodiment of the present invention, if the information about the Non-3GPP network is included in the available network information, it is determined whether the network quality of the Non-3GPP network meets the handover condition, and if the handover condition is met, the Non- The 3GPP network acts as a designated Non-3GPP network. In another implementation manner, the Non-3GPP network may also be directly used as the designated Non-3GPP network.

Optionally, in the embodiment of the present invention, if the information of the multiple Non-3GPP networks is included in the available network information, the Non-3GPP network whose network quality meets the handover condition is first determined, and if the network quality is determined to meet the handover condition, Non- The number of 3GPP networks is plural, and the Non-3GPP network with the best network quality is selected among the plurality of Non-3GPP networks as the designated 3GPP network. If there is no Non-3GPP network that meets the preset handover condition, one of the plurality of Non-3GPP networks may select one of the best network quality Non-3GPP networks as the designated Non-3GPP network.

For example, in multiple Non-3GPP networks, the selected signal strength is greater than the first threshold (eg, 65 dBm) The Non-3GPP network is a designated Non-3GPP network. If there are multiple Non-3GPP networks whose signal strength is greater than the first threshold, then in the Non-3GPP network where the signal strength is greater than the first threshold, the packet loss rate is selected to be smaller than the second. a threshold (eg, 10%) of the Non-3GPP network as the designated Non-3GPP network; if there are multiple Non-3GPP networks with a packet loss rate less than the second threshold, in a Non-3GPP network where the packet loss rate is less than the second threshold Selecting a Non-3GPP network whose network delay is less than a third threshold (for example, 50 ms) as the designated Non-3GPP network, if there are multiple Non-3GPP networks whose network delay is less than the third threshold, then the selection history switching success rate is greater than the first A four-threshold (eg, 95%) Non-3GPP network is designated as the Non-3GPP network.

S240. Send information of the designated Non-3GPP network to the user equipment.

According to the embodiment of the present invention, the core network device may determine link quality information of the non-trusted Non-3GPP network according to the information of the non-trusted Non-3GPP network, that is, the core network device may determine the ePDG to the core network. Link quality information on the side.

The user equipment can perform handover according to the specified Non-3GPP network selected by the core network device in the embodiment of the present invention, which can improve the handover success rate and ensure the continuity and quality of the service.

In the following, the user equipment and the core network device are used as the main body, and an embodiment is provided to describe the network switching method provided by the embodiment of the present invention. In this embodiment, the 3GPP network is an LTE network, and the Non-3GPP network is a WLAN network.

FIG. 3 is a flowchart of still another network switching method according to an embodiment of the present invention. The method provided by the embodiment of the present invention may include the following steps, that is, S310 to S380:

S310: The user equipment is powered on, performs network search, and registers with the LTE network.

In the case where the priority of the LTE network is higher than that of the WLAN network. After the user equipment is powered on, the network search is performed, and the LTE network has a higher priority than the WLAN network, and is registered to the LTE network to establish a wireless and wired bearer.

S320. The user equipment initiates a VOLTE (Voice over LTE) call.

S330. The user equipment forms available network information according to the currently available WLAN network.

During the call, the user equipment performs a network search, and in the searched WLAN network, determines an available WLAN network, and obtains information of available WLAN networks, according to available WLAN networks. The network information forms available network information.

The user equipment periodically reports available network information. Optionally, in the embodiment of the present invention, if the currently available WLAN network is the same as the last available WLAN network, the formed available network information may be a null value.

S340: The user equipment reports available network information.

Optionally, in the embodiment of the present invention, the user equipment may report the available network information autonomously by using measurement report signaling.

S350. The core network device receives the available network information, and determines whether the available network information is a null value; if yes, proceeds to S350; if not, executes S360.

In the embodiment of the present invention, if the user equipment reports the available network information through the measurement report signaling in S340, in this step, the core network device receives the measurement report signaling, and extracts the available network information in the measurement report signaling.

S360: The core network device switches the success rate according to the history of each WLAN network, and selects a WLAN network as the designated WLAN network.

Optionally, in the embodiment of the present invention, the core network device may switch the success rate according to the history of each WLAN network, and select a WLAN network whose history is switched to a rate greater than a fourth threshold as the designated WLAN network.

S370. The core network device sends information about the designated WLAN network to the user equipment.

S380. After the signal strength of the LTE network is lower than the handover threshold, the user equipment switches the LTE network to the designated WLAN network.

After the signal strength of the LTE network is lower than the handover threshold, in order to ensure the call quality, network handover is required. At this time, the available network searched by the user equipment is only the WLAN network, and then the handover is performed according to the WLAN network specified by the core network device.

The user equipment performs authentication and encryption on the specified WLAN network, and the bearer is established, and then the LTE network bearer is released, and the network handover is completed.

Since the WLAN network is a Non-3GPP network, and the link quality of the user equipment to the ePDG to the core network device is unknown, the core network device evaluates the quality of the available WLAN network, and selects a WLAN network with the best network quality as the designated WLAN network. Notify user equipment, user equipment Simply switch to the WLAN network specified by the core network device.

Embodiments of the present invention provide a network switching apparatus that is disposed in a user equipment. FIG. 4 is a schematic structural diagram of a network switching apparatus according to an embodiment of the present invention. The apparatus provided by the embodiment of the present invention is configured in a user equipment, where the network switching apparatus may include: an obtaining module 410, a communication module 420, and a switching module 430.

The obtaining module 410 is configured to: after registering to the 3GPP network, acquire available network information; where the available network information includes information of one or more available Non-3GPP networks.

Optionally, in the embodiment of the present invention, the type of the Non-3GPP network includes: a trusted Non-3GPP network and a non-trusted Non-3GPP network.

The communication module 420 is configured to report the available network information acquired by the obtaining module 410 to the core network device, and receive information of the designated Non-3GPP network returned by the core network device according to the available network information.

The switching module 430 is configured to: when performing network switching, if it is determined to switch to the Non-3GPP type network, switch the 3GPP network to the designated Non-3GPP network according to the information of the specified Non-3GPP network received by the communication module 420. .

Optionally, in an embodiment of the present invention, the implementation manner of the communication module 420 reporting the available network information acquired by the obtaining module 410 to the core network device may include: obtaining the available information acquired by the obtaining module 410 by using measurement report signaling. The network information is reported to the core network device.

Optionally, in another embodiment of the present invention, the switching module 430 determines an implementation manner of switching to a Non-3GPP type network, and may include: performing network search when performing network switching; in the searched network, If only the searched Non-3GPP network is available, it is determined to switch to the Non-3GPP type network, or if the preset priority of the Non-3GPP network is the highest, then the network handover to the Non-3GPP type is determined.

The functions of the device in the embodiment of the present invention have been described in the method embodiments shown in FIG. 1 and FIG. 3. Therefore, the description of the network switching device provided by the embodiment of the present invention is not exhaustive. The relevant descriptions in the examples are not described here.

Embodiments of the present invention provide a network switching apparatus that is disposed in a core network device. FIG. 5 is a schematic structural diagram of another network switching apparatus according to an embodiment of the present disclosure. The apparatus provided by the embodiment of the present invention is configured in a core network device, where the network switching apparatus may include: a receiving module 510, a determining module 520, and a selecting module. 530 and a sending module 540.

The receiving module 510 is configured to: receive available network information reported by the user equipment, where the available network information includes information of one or more available Non-3GPP networks.

Optionally, in the embodiment of the present invention, the types of the Non-3GPP network include: a trusted Non-3GPP network and a non-trusted Non-3GPP network.

The determining module 520 is configured to: determine network quality information of each Non-3GPP network according to information of each Non-3GPP network received by the receiving module 510.

The selecting module 530 is configured to: select the designated Non-3GPP network according to the network quality information of each Non-3GPP network determined by the determining module 520.

The sending module 540 is configured to: send information of the designated Non-3GPP network selected by the selecting module 530 to the user equipment.

Optionally, in an embodiment of the present invention, the receiving module 510 receives the implementation of the available network information that is reported by the user equipment, and may include: receiving the measurement report signaling reported by the user equipment, and extracting the measurement report signaling in the measurement report signaling. Available network information.

Although a plurality of alternative embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are also possible. Therefore, the scope of the present invention should not be limited to the above embodiments. .

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium on a corresponding hardware platform (according to The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented using an integrated circuit. The steps may be separately fabricated into individual integrated circuit modules, or a plurality of modules or steps may be fabricated into a single integrated circuit module.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

In the embodiment of the present invention, the information of the available Non-3GPP network is reported by the user equipment, and the core network device does not need to deliver the command for measuring the Non-3GPP network, and the core network device determines the optimal Non according to the information of the reported Non-3GPP network. -3GPP network, when the user equipment needs to switch to the Non-3GPP network, the network switching can be performed only according to the preferred Non-3GPP network determined by the core network device; the technical solution provided by the embodiment of the present invention increases the user equipment. The autonomy and flexibility avoids the problem caused by the user equipment switching in the s2b mode when the link quality information of the ePDG to the core network device is unknown.

Claims

A network switching method is performed by a user equipment, and the method includes:

Acquiring available network information after registering with the 3rd Generation Partnership Project 3GPP network; wherein the available network information includes information of one or more available non-3rd Generation Partnership Project Non-3GPP networks;

And reporting the available network information to the core network device, and receiving information of the specified Non-3GPP network returned by the core network device according to the available network information;

When performing network handover, if it is determined to switch to a Non-3GPP type network, the 3GPP network is handed over to the designated Non-3GPP network according to the information of the designated Non-3GPP network.
The method of claim 1, wherein the reporting the available network information to the core network device comprises:

The available network information is reported to the core network device by measurement report signaling.
The method of claim 1, wherein the determining to switch to a Non-3GPP type network comprises:

Perform network search when performing network switching;

In the searched network, if only the searched Non-3GPP network is available, or if the searched Non-3GPP network has the highest preset priority, it is determined to switch to the Non-3GPP type network.
The method of any of claims 1-3, wherein the type of the Non-3GPP network comprises: a trusted Non-3GPP network and a non-trusted Non-3GPP network.
A network switching method is performed by a core network device, and the method includes:

Receiving available network information reported by the user equipment; wherein the available network information includes information of one or more available non-3rd Generation Partnership Project Non-3GPP networks;

Determining network quality information of each of the Non-3GPP networks according to information of each of the Non-3GPP networks;

Selecting a designated Non-3GPP network according to network quality information of each of the Non-3GPP networks;

Sending information of the specified Non-3GPP network to the user equipment.
The method of claim 5, wherein the receiving the available network information reported by the user equipment comprises:

Receiving measurement report signaling reported by the user equipment;

Extracting the available network information in the measurement report signaling.
The method according to claim 5 or 6, wherein the type of the Non-3GPP network comprises: a trusted Non-3GPP network and a non-trusted Non-3GPP network.
A network switching device is disposed in a user equipment, where the device includes:

An obtaining module, configured to: after registering to the 3rd Generation Partnership Project 3GPP network, obtain available network information; wherein the available network information includes one or more available non-3rd Generation Partnership Project Non-3GPP networks Information;

a communication module, configured to: report the available network information acquired by the acquiring module to a core network device, and receive information of the specified Non-3GPP network returned by the core network device according to the available network information;

a switching module, configured to: when performing network switching, if it is determined to switch to a Non-3GPP type network, switch the 3GPP network to the according to the information of the specified Non-3GPP network received by the communication module Specify the Non-3GPP network.
The device according to claim 8, wherein the communication module reports the available network information acquired by the obtaining module to the core network device, including:

The available network information acquired by the acquiring module is reported to the core network device by using measurement report signaling.
The apparatus of claim 8, wherein the handover module determines to switch to a Non-3GPP type network, comprising:

Perform network search when performing network switching;

In the searched network, if only the searched Non-3GPP network is available, or if the searched Non-3GPP network has the highest preset priority, it is determined to switch to the Non-3GPP type network.
The apparatus of any of claims 8-10, wherein the type of the Non-3GPP network comprises a trusted Non-3GPP network and a non-trusted Non-3GPP network.
A network switching device is disposed in a core network device, where the device includes:

a receiving module, configured to: receive available network information reported by the user equipment, where the available network information includes information of one or more available non-3rd generation partner program Non-3GPP networks;

a determining module, configured to: determine network quality information of each of the Non-3GPP networks according to information about each of the Non-3GPP networks received by the receiving module;

a selection module, configured to: select a designated Non-3GPP network according to network quality information of each of the Non-3GPP networks determined by the determining module;

And a sending module, configured to: send information of the specified Non-3GPP network selected by the selecting module to the user equipment.
The device according to claim 12, wherein the receiving module receives the available network information reported by the user equipment, including:

Receiving measurement report signaling reported by the user equipment;

Extracting the available network information in the measurement report signaling.
The apparatus of claim 12 or 13, wherein the type of the Non-3GPP network comprises: a trusted Non-3GPP network and a non-trusted Non-3GPP network.