CN115348624A

CN115348624A - Switching method, device, chip and module equipment

Info

Publication number: CN115348624A
Application number: CN202110527765.0A
Authority: CN
Inventors: 曹春燕
Original assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Current assignee: Spreadtrum Semiconductor Nanjing Co Ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2022-11-15

Abstract

The application discloses a switching method, a switching device, a chip and module equipment, wherein the method comprises the following steps: the method comprises the steps that terminal equipment receives a conditional switch instruction sent by a source access point, wherein the conditional switch instruction comprises conditional switch (CHO) configuration information of at least one access point to be selected; and the terminal equipment is switched to a target access point in the at least one access point to be selected according to the CHO configuration information of the at least one access point to be selected. By adopting the method described in the application, the terminal equipment can recover the connection with the data network more quickly after the access point and the wireless core network are disconnected.

Description

Switching method, device, chip and module equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a method, an apparatus, a chip, and a module device for switching.

Background

With the development of the times, more and more users begin to use fifth generation mobile communication technology (5 g) networks. The terminal device can Access the 5G network through an Access Point (AP) deployed indoors.

Currently, a terminal device may be connected to a wireless core network through an AP and connected to a data network, thereby implementing normal data communication. However, the connection between the AP and the wireless core network may be disconnected due to environmental factors or human factors, which results in disconnection between the terminal device and the data network, thereby causing an abnormal communication between the terminal device and the data network. Therefore, how to recover the connection with the data network after the connection between the AP and the wireless core network is disconnected by the terminal device is an urgent problem to be solved.

Disclosure of Invention

The application provides a switching method, a switching device, a switching chip and a switching module device, which are beneficial to enabling terminal equipment to recover the connection of a data network more quickly after an access point and a wireless core network are disconnected.

In a first aspect, the present application provides a handover method, including: the method comprises the steps that terminal equipment receives a conditional switch instruction sent by a source access point, wherein the conditional switch instruction comprises conditional switch (CHO) configuration information of at least one access point to be selected; and the terminal equipment is switched to a target access point in the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

By the method described in the first aspect, after the connection between the source access point and the wireless core network is disconnected, the terminal device is triggered to execute the condition switching through the condition switching instruction sent by the source access point, so that the connection with the data network is quickly recovered, the disconnection with the data network for a long time is avoided, and the user experience is reduced.

In one possible implementation, the CHO configuration information includes: the identification of the access point to be selected and the switching condition of the access point to be selected.

In one possible implementation, before the terminal device receives the conditional switch indication sent by the source access point,

in one possible implementation, the method further includes: the terminal equipment receives a conditional switching configuration sent by the source access point, wherein the conditional switching configuration comprises CHO configuration information of the at least one access point to be selected

In one possible implementation, the terminal device sends terminal capability information to the source access point, where the terminal capability information is used to indicate that the terminal device supports connecting to the wireless core network.

In a possible implementation manner, the terminal device receives a disconnection indication sent by the source access point, where the disconnection indication is used to indicate disconnection between the source access point and the wireless core network.

In a possible implementation manner, after the terminal device receives the disconnection indication sent by the source access point, the method further includes: the terminal device stops sending uplink data through the first link, and the first link is a link established through the wireless core network.

In one possible implementation, the source access point is connected to a wired core network; after the terminal device receives the disconnection indication sent by the source access point, the method further includes: the terminal device stops transmitting uplink data through a first link, which is a link established through the wireless core network, and transmits the uplink data using a second link, which is a link established through the wired core network.

In a possible implementation manner, when the terminal device is executed to switch to a target access point in the at least one candidate access point according to the CHO configuration information of the at least one candidate access point, the step specifically includes: the terminal device measures signals of N access points to be selected in the at least one access point to be selected to obtain signal measurement results of the N access points to be selected, the signal measurement result of each access point to be selected in the N access points to be selected is used for indicating the signal quality and/or the signal strength of the access point to be selected, N is a positive integer, and the value of N is not greater than the total number of the at least one access point to be selected; and the terminal equipment is switched to the target access point according to the signal measurement results of the N access points to be selected and the CHO configuration information of the N access points to be selected, wherein the target access point is one access point to be selected of the N access points to be selected, and the signal measurement result of the access point to be selected meets the CHO configuration information.

In a possible implementation manner, the target access point is a candidate access point with an optimal signal measurement result among M candidate access points, and the M candidate access points are candidate access points that satisfy CHO configuration information among the N candidate access points.

In a possible implementation manner, after the terminal device receives the disconnection indication sent by the source access point, the method further includes:

in one possible implementation, the terminal device disconnects from the source access point; the terminal device measures signals of at least one nearby access point; the terminal device selects one nearby access point from the at least one nearby access point based on the signal measurement result of the at least one nearby access point, and accesses the nearby access point.

In the second aspect, a source access point acquires conditional switch (CHO) configuration information of at least one access point to be selected;

the source access point sends a conditional switch instruction to the terminal equipment, wherein the conditional switch instruction comprises conditional switch CHO configuration information of at least one candidate access point.

In a possible implementation manner, when the source access point sends a conditional handover instruction to the terminal device, the step specifically includes: and the source access point detects that the connection with the wireless core network is disconnected and sends the conditional switching instruction to the terminal equipment.

In one possible implementation, the CHO configuration information includes: the identifier of the access point to be selected and the switching condition of the access point to be selected.

In one possible implementation manner, the source access point sends a disconnection indication to the terminal device, where the disconnection indication is used for indicating disconnection between the source access point and the wireless core network.

In a possible implementation manner, the source access point sends a conditional handover configuration to the terminal device, where the conditional handover configuration includes: CHO configuration information of the at least one candidate access point.

In a possible implementation manner, before the source access point sends the conditional handover configuration to the terminal device, the method further includes: and the source access point receives terminal capability information sent by the terminal equipment, wherein the terminal capability information is used for indicating that the terminal equipment supports connection to a wireless core network.

In a third aspect, the present application provides a communication device, including a communication unit and a processing unit, wherein: the communication unit is used for receiving a conditional switching instruction sent by a source access point, wherein the conditional switching instruction comprises conditional switching (CHO) configuration information of at least one access point to be selected; the processing unit is configured to switch to a target access point of the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

In a fourth aspect, the present application provides a communication device comprising a communication unit and a processing unit, wherein: the processing unit is used for acquiring conditional access point (CHO) configuration information of at least one access point to be selected; the communication unit is configured to send a conditional handover instruction to the terminal device, where the conditional handover instruction includes conditional handover CHO configuration information of at least one candidate access point.

In a fifth aspect, the present application provides a communication device comprising a processor, a memory, and a transceiver for receiving signals or transmitting signals; the memory for storing program code; the processor is configured to call the program code from the memory to perform the method according to the first aspect or the second aspect and any possible implementation manner thereof.

In a sixth aspect, the present application provides a chip, where the chip is configured to obtain conditional access point (CHO) configuration information of at least one candidate access point; the chip is used for sending a conditional switch instruction to the terminal equipment, wherein the conditional switch instruction comprises conditional switch CHO configuration information of at least one access point to be selected.

In a seventh aspect, the present application provides a chip, where the chip is configured to obtain conditional access point (CHO) configuration information of at least one candidate access point; the chip is used for sending a condition switching instruction to the terminal equipment, wherein the condition switching instruction comprises condition switching CHO configuration information of at least one access point to be selected.

In an eighth aspect, the present application provides a module device, which includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or is used for carrying out communication between the module equipment and external equipment; this chip module is used for: receiving a conditional switching instruction sent by a source access point, wherein the conditional switching instruction comprises conditional switching (CHO) configuration information of at least one access point to be selected; and switching to a target access point in the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

In a ninth aspect, the present application provides a module device, which includes a communication module, a power module, a storage module, and a chip module, wherein: the power module is used for providing electric energy for the module equipment; the storage module is used for storing data and instructions; the communication module is used for carrying out internal communication of the module equipment or is used for carrying out communication between the module equipment and external equipment; this chip module is used for: acquiring conditional switch (CHO) configuration information of at least one access point to be selected; and sending a conditional switching indication, wherein the conditional switching indication comprises conditional switching CHO configuration information of at least one candidate access point.

In a tenth aspect, the present application provides a computer-readable storage medium having stored thereon computer-readable instructions that, when executed on a communication apparatus, cause the communication apparatus to perform the method of the first or second aspect and any possible implementation manner thereof.

In an eleventh aspect, the present application provides a computer program or computer program product comprising code or instructions which, when run on a computer, cause the computer to perform the method as in the first or second aspect and any possible implementation thereof.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic flowchart of configuration condition switching according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a network architecture provided in an embodiment of the present application;

fig. 3 is a schematic diagram of four connection modes of the terminal device accessing the data network;

fig. 4 is a schematic flowchart of a handover method according to an embodiment of the present application;

fig. 5 is a schematic flowchart of another handover method provided in the embodiment of the present application;

fig. 6 is a schematic flowchart of another configuration condition switching provided in an embodiment of the present application;

fig. 7 is a schematic flowchart of another handover method provided in the embodiment of the present application;

fig. 8 is a schematic flowchart of another handover method provided in the embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a module apparatus according to an embodiment of the present application.

Detailed Description

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

The terminology used in the following embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in the specification of the present application and the appended claims, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the listed items.

It should be noted that the terms "first," "second," "third," and the like in the description and claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

First, some terms referred to in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

1. The terminal equipment:

terminal equipment refers to various forms of User Equipment (UE), access terminal, subscriber unit, subscriber station, mobile Station (MS), remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computer device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.

2. The access point:

an Access Point (AP) may be a small cell base station or a home base station or a non-public network cell base station. A base station is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, the device providing the Base Station function in the 2G network includes a Base Transceiver Station (BTS), the device providing the Base Station function in the 3G network includes a node B (NodeB), the device providing the Base Station function in the 4G network includes an Evolved node B (eNB), the device providing the Base Station function in the 5G New Radio (New Radio, NR) includes a gNB, and a node B continuing to evolve (ng-eNB), where the gNB and the terminal communicate using an NR technology, the ng-eNB and the terminal communicate using an Evolved Universal Terrestrial Radio Access (E-UTRA) technology, and both the gNB and the ng-eNB may be connected to the 5G core network. The access point in the embodiment of the present application also includes a device and the like that provide an access network function in a future new communication system.

The access point may be one device or may be divided into two parts. In a possible implementation manner, when the access point is a device, the access point has a complete access network function. In another possible implementation manner, when the Access point is divided into two parts, the two parts are an enhanced home Gateway (edrg) and a home Radio Access Point (PRAS), respectively. The eRG is connected with the core network, has partial core network functions and is mainly responsible for data interaction with core network equipment. The PRAS is connected to the terminal device, may have a complete base station function, or may only have a partial base station function, and is mainly responsible for data interaction with the terminal device. In this embodiment of the present application, the PRAS is configured to send a condition switching instruction to the terminal device after the ehg is disconnected from the link of the wireless core network, and instruct the terminal device to perform condition switching. The PRAS may determine that the link between the eRG and the wireless core network is disconnected in two ways, one is that the PRAS detects that data sent to the wireless core network through the eRG is not successfully sent, and for example, after the PRAS sends the data to the wireless core network through the eRG, response information replied by the wireless core network through the eRG is still not received after a preset time; another is that the eRG sends information to the PRAS indicating that the eRG is disconnected from the wireless core network.

In the embodiment of the application, the access points can be divided into the source access point and the target access point according to the network switching process of the terminal device. The source access point is a connection access point of the terminal equipment before switching, and is mainly used for configuring condition switching for the terminal equipment, and sending a condition switching instruction to the terminal equipment after detecting that a link between the source access point and a wireless core network is disconnected, and indicating the terminal equipment to execute the condition switching; and the target access point is the access point connected after the terminal equipment performs network switching.

3. Conditional Handover (CHO):

the condition is switched to a switching performed by the terminal device when one or more switching execution conditions are satisfied. The terminal device starts evaluating the execution condition when receiving the condition switching configuration, and stops evaluating the execution condition when performing the switching. The conditional switching can avoid that the terminal equipment cannot successfully receive the switching command of the source access point to cause the failure of a wireless link when the signal quality of the terminal equipment and the source access point is poor. The source access point is connected with the terminal equipment and used for providing data connection for the terminal equipment.

The process of condition switching is as follows: when the communication signal between the terminal equipment and the source access point is good, the source access point configures condition switching for the terminal equipment and sends the condition switching configuration to the terminal equipment, wherein the condition switching configuration comprises the identification of at least one access point to be selected, configuration information generated by at least one access point to be selected and switching conditions corresponding to at least one access point to be selected generated by the source access point. And when the terminal equipment determines that the access point to be selected meets the switching condition, the terminal equipment triggers the switching autonomously and is connected to the network of the access point to be selected meeting the switching condition.

Switching conditions corresponding to the access points to be selected are as follows: one or two trigger conditions may be included, for example, a Signal parameter of the candidate access point is required to be greater than a preset threshold, for example, the Signal parameter may be Reference Signal Received Power (RSRP), reference Signal Receiving Quality (RSRQ), signal to Interference plus Noise Ratio (SINR), and the like, and the Signal parameter is used to evaluate a handover condition of the candidate access point, and if all the candidate access points do not satisfy the handover condition, or the terminal device receives a handover command that does not include a CHO configuration, the terminal device switches the network in a hard handover manner, and does not switch in a CHO manner.

The source access point configures a CHO specific process for the terminal device, as shown in fig. 1. Fig. 1 includes the following steps:

101. the terminal device measures signal parameters of at least one access point (which may include, for example, a first access point, a second access point, and a third access point).

After the terminal device establishes a connection with the source access point, the terminal device measures a signal parameter of at least one access point, and the access point measured by the terminal device is usually an access point near the terminal device.

For example, a signal parameter of an access point is used to characterize signal quality and/or signal strength between a terminal device and the access point. Illustratively, the signal parameters may include any one or more of RSRP, RSRQ, or SINR parameters.

102. And the terminal equipment sends the measurement result corresponding to the at least one access point to the source access point.

The measurement result includes the signal parameter of the access point measured by the terminal device in step 101 and the identifier corresponding to the access point.

103. And the source access point determines the access point meeting the preset condition in the at least one access point as the access point to be selected according to the measurement result corresponding to the at least one access point.

The preset condition may be that the signal parameter of the access point is required to be within a preset value range. For example, if the signal parameter magnitudes of the first access point and the second access point are within a preset value range, the source access point determines that the first access point and the second access point are candidate access points; and if the signal parameter of the third access point is out of the preset numerical range, the source access point judges that the third access point cannot be used as the candidate access point.

104. The source access point sends a CHO request to at least one candidate access point (taking the first access point and the second access point as an example).

105. After the first access point and the second access point receive the CHO requests, the first access point and the second access point respectively send CHO responses to the source access point, wherein the CHO responses comprise configuration information of the corresponding candidate access points.

The configuration information of the access point to be selected includes public configuration information of a cell corresponding to the access point to be selected, and when the terminal device needs to access the cell where the access point to be selected is located, the terminal device can access a network corresponding to the access point to be selected based on the configuration information.

106. And the source access point generates CHO configuration information corresponding to the at least one access point to be selected according to the CHO response sent by the at least one access point to be selected.

The CHO configuration information includes the identifier of the access point to be selected, the configuration information and the handover condition.

107. A source access point sends a Radio Resource Control Reconfiguration (rrcrconfiguration) message to a terminal device, where the rrcrconfiguration carries a conditional handover configuration, and the conditional handover configuration includes CHO configuration information corresponding to a first access point and CHO configuration information corresponding to a second access point.

108. The terminal device completes the CHO configuration according to the RRCReconfiguration message, and sends a Radio Resource Control Reconfiguration Complete (RRCReconfiguration Complete) message to the source access point.

In the application, after receiving the reported capability information of the terminal, the source access point determines whether the terminal equipment has the capability of connecting with the wireless access point according to the capability information of the terminal, and if the terminal has the capability of connecting with the wireless core network, the source access point configures CHO for the terminal equipment. Under the condition that a link between a source access point and a wireless core network is disconnected, the source access point sends a condition switching instruction to the terminal equipment, and the terminal equipment is triggered to execute condition switching in time after the link is disconnected, so that the condition switching is prevented from being influenced when the terminal equipment is in a network disconnection state for a long time.

The embodiment of the present application may be applied to the network architecture schematic diagram shown in fig. 2, where the network architecture shown in fig. 2 is a network architecture of a wireless communication system, the network architecture generally includes a terminal device and a source access point, and the number and the form of the respective devices do not constitute a limitation to the embodiment of the present application. The terminal device is connected with the source access point, and the terminal device can acquire data network services through the source access point, wherein the source access point can provide communication services for a plurality of terminal devices. In the embodiment of the application, a unidirectional communication link from a source access point to a terminal device is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; and the unidirectional communication link from the terminal device to the source access point is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is called uplink direction.

In the embodiment of the application, the terminal device can be connected with the core network device through the source access point to access the data network. The core network equipment comprises wired core network equipment and wireless core network equipment, the wireless core network equipment can be connected with the source access point in a wired connection mode or a wireless connection mode, and the wired core network equipment can only be connected with the source access point in a wired connection mode.

As shown in fig. 3, there are four connection modes for the terminal device to access the data network through the source access point. The first connection mode is as follows: the terminal equipment is connected with the source access point, and the source access point is connected with the wireless core network equipment through wired connection and then connected with the data network. The second connection mode is as follows: the terminal equipment is connected with a source access point, and the source access point equipment is accessed to the wireless core network equipment through an NR/Long Term Evolution (LTE) wireless access network and then is accessed to a data network. The third connection mode is as follows: the terminal equipment is connected with a source access point, the source access point can be connected with wireless core network equipment through an NR/LTE wireless access network to access a data network, and can be connected with wired core network equipment through a wired access network to access the data network, wherein the source access point can be connected with only one core network equipment (an active-standby mode) or two core network equipment (a shunting mode) at a certain moment. The fourth connection mode is as follows: the terminal equipment is connected with the source access point, and the source access point is accessed to the wired core network equipment through wired connection and then is accessed to the data network.

Based on the above, a handover method provided in the embodiment of the present application is described below, referring to fig. 4, where fig. 4 is a flowchart of a handover method provided in the embodiment of the present application, and the handover method includes steps 401 to 402. Wherein:

401. the source access point sends a conditional switch indication to the terminal device.

In the embodiment of the present application, the conditional handover instruction is used to instruct the terminal device to perform conditional handover, where the conditional handover instruction includes CHO configuration information of at least one candidate access point. The CHO configuration information includes the identifier of the access point to be selected and the switching conditions, and the switching conditions corresponding to different access points to be selected may be different. By the method, the terminal equipment can execute condition switching more timely, disconnection with a data network for a long time is avoided, and user experience is reduced.

The CHO configuration information may further include configuration information of an access point to be selected. The configuration information of the access point to be selected includes the public configuration information of the cell corresponding to the access point to be selected, and when the terminal equipment needs to access the cell where the access point to be selected is located, the terminal equipment can access the cell network corresponding to the access point to be selected based on the configuration information.

When the source access point judges that the connection between the source access point and the wireless core network is disconnected, the source access point sends a condition switching instruction to the terminal equipment and instructs the terminal equipment to perform condition switching.

The CHO configuration information of at least one candidate access point contained in the conditional handover instruction is the same as the CHO configuration information of at least one candidate access point contained in the conditional handover configuration sent by the source access point. The conditional switch is configured to configure the information carried by the rrcreeconfiguration message when the source access point sends the rrcreeconfiguration message to the terminal device, which may be specifically shown in fig. 1 and is not described herein again.

In some embodiments, after obtaining the CHO configuration information of at least one candidate access point, the source access point sends a conditional handover indication to the terminal device. For example, the CHO configuration information obtained by the source access point from the at least one candidate access point may be obtained in the process of configuring the conditional handover for the terminal device, which may be specifically shown in fig. 1 and is not described herein again.

402. And the terminal equipment is switched to a target access point in the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

In the embodiment of the application, the target access point is one of the candidate access points which meet the switching condition. Optionally, the terminal device may determine the target access point from at least one candidate access point by using different methods, for example, the terminal device may select, as the target access point, a candidate access point with the largest RSRP from a plurality of candidate access points that satisfy the handover condition, or randomly select the candidate access point from the plurality of candidate access points that satisfy the handover condition, and so on. Based on the mode, the terminal equipment can switch the access point more quickly, and meanwhile, the more suitable access point can be selected through conditional switching.

Referring to fig. 5, fig. 5 is a flowchart of a handover method provided in an embodiment of the present application, where the handover method includes steps 501 to 507. Step 506 and step 507 are a specific implementation manner of step 402, and a specific implementation manner of step 505 is the same as that of step 401, which is not described herein again in this embodiment of the present application.

501. The terminal device sends terminal capability information to the source access point.

In this embodiment, the terminal capability information is used to indicate whether the terminal device supports connection to a wireless core network. The source access point may determine whether to configure the CHO for the terminal device based on the capability information of the terminal device. And if the source access point judges that the terminal equipment supports connecting the wireless core network according to the terminal capability information, the source access point configures CHO for the terminal equipment.

For example, the terminal device may send the terminal capability information in two scenarios: one scenario is that after the terminal device establishes connection with a source access point, the terminal device sends terminal capability information to the source access point; in another scenario, after the capability of the terminal device is updated, the terminal device sends the terminal capability information to the source access point.

502. And the source access point performs conditional switch configuration on the terminal equipment.

Fig. 1 is a diagram illustrating a specific process of performing conditional handover configuration on a terminal device by a source access point, which is not described herein again in this embodiment of the present application.

In this embodiment, if the terminal capability information sent by the terminal device indicates that the terminal device supports connection to the wireless core network, the source access point configures a CHO for the terminal device.

503. The source access point sends a disconnection indication to the terminal device.

In this embodiment, the disconnection indication is used to indicate disconnection between the source access point and the wireless core network. The disconnected connection may be a wired connection corresponding to the wireless core network device, or may be a wireless connection.

In the embodiment of the application, when the source access point detects that the connection with the wireless network is disconnected, the source access point sends the disconnection indication to the terminal equipment.

In a possible implementation manner, after receiving the disconnection indication, if the source access point is connected to the wireless core network and also connected to the wired core network at the same time, the terminal device stops sending the uplink data through the first link, and sends the uplink data through the second link, where the first link is a link established through the wireless core network and the second link is a link established through the wired core network. Exemplarily, in the third connection manner shown in fig. 2, the first link is a link corresponding to data interaction between the terminal device and the data network through the source access point and the wireless core network device, and the second link is a link corresponding to data interaction between the terminal device and the data network through the source access point and the wired core network device. Based on the mode, the terminal device does not need to switch, when the link between the source access point and the core network is recovered, the source access point restores the connection state of the link to the original connection state, and sends information to inform the terminal device, wherein the indication information is used for indicating that the link is recovered.

By using a specific example, as shown in a third connection mode shown in fig. 2, if a source access point initially uses a mode of simultaneously connecting two core network devices (split mode), that is, the source access point is connected to a wireless core network device and also connected to a wired core network device, and a terminal device performs data transmission with a data network, the source access point may simultaneously transmit data through a first link and a second link, and when the source access point detects that the first link is disconnected, that is, the link between the source access point and the wireless core network device is disconnected, the source access point transfers all data traffic of the terminal device to the second link, and when the first link is recovered, the source access point recovers the link state to a connection state of simultaneously connecting two core network devices (split mode), and sends information to notify the terminal device, where the indication information is used to indicate that the link has been recovered.

In a possible implementation manner, after the terminal device receives the disconnection indication, the terminal device may also switch the network in a hard handover manner, that is, the terminal device directly disconnects from the source access point, performs signal measurement on at least one nearby access point, and selects one nearby access point from the at least one nearby access point to access the nearby access point based on a signal measurement result of the at least one nearby access point. The method can be applied to an application scenario in which the terminal device does not receive the condition switching instruction after waiting for a preset time after receiving the disconnection instruction, an application scenario in which the terminal device determines that all relevant parameters of the access points to be selected do not meet the corresponding switching conditions, or an application scenario in which the condition switching instruction received by the terminal device does not contain the CHO configuration.

504. And after receiving the disconnection indication, the terminal equipment stops sending the uplink data through the first link.

In this embodiment of the application, the first link may be a link established through the wireless core network, that is, a link corresponding to data interaction between the terminal device and the data network through the source access point and the wireless core network, and corresponds to a link between the terminal device and the data network in the second connection manner in fig. 2. The first link may also be a link established between the source access point and the wireless core network device through a wired link connection, which corresponds to a link between the first connection mode terminal device and the data network in fig. 2. Based on the mode, the terminal equipment can stop sending data in time, and waste of resources is avoided.

505. The source access point sends a conditional switch indication to the terminal device.

In this embodiment, the sequence of executing step 504 and step 505 is not limited in this application. Step 505 may be executed first and then step 504 may be executed, or step 504 and step 505 may be executed simultaneously.

506. And the terminal equipment performs signal measurement on N access points to be selected in the at least one access point to be selected to obtain signal measurement results of the N access points to be selected.

In the embodiment of the application, after the terminal device receives the condition switching instruction, the terminal device performs signal measurement on the access point to be selected. And the signal measurement result obtained by the terminal equipment is used for indicating the signal quality and/or the signal strength of the access point to be selected. Illustratively, the signal measured parameters may include one or more of RSRP, RSRQ, or SINR. The N is a positive integer, and the value of the N is not more than the total number of the at least one access point to be selected.

507. And the terminal equipment is switched to the target access point according to the signal measurement results of the N access points to be selected and the CHO configuration information of the N access points to be selected.

In this embodiment, the target access point is one candidate access point of the N candidate access points whose signal measurement result satisfies the corresponding handover condition.

In a possible implementation manner, the target access point is one of the candidate access points that satisfy the handover condition and that are randomly selected by the terminal device.

In another possible implementation manner, the target access point is a candidate access point with an optimal signal measurement result among candidate access points satisfying the handover condition. The access point to be selected with the optimal signal measurement result is the access point with the best communication signal quality and/or the largest signal strength between the terminal device and the selected access point, and the access point which is most favorable for the terminal device to perform data transmission can be selected based on the mode.

The specific process of the terminal device determining the candidate access point with the optimal signal measurement result may be as follows: the terminal equipment determines M access points to be selected which meet the switching condition from the N access points to be selected, wherein M is less than or equal to N; the terminal equipment calculates preset priority values of the M access points to be selected according to the signal parameters of the M access points to be selected and a preset formula; and the terminal equipment selects the access point to be selected with the maximum preset priority value from the M access points to be selected as the target access point.

Illustratively, the terminal device determines M candidate access points satisfying a handover condition from the N candidate access points, and calculates a preset priority value according to M candidate access point signal parameters SINR, RSRQ and a preset formula, where the preset formula is a sum of SINR and RSRQ, where SINR refers to a ratio of a received strength of a useful signal to a received strength of an interference signal, and a larger SINR represents a smaller interference signal, RSRQ represents LTE reference signal reception quality, and a larger RSRQ represents a better reference signal reception quality, and therefore, a larger preset priority value calculated based on the preset formula is, that is, a corresponding candidate access point is better for a terminal device signal. Thus, the terminal device can select a more appropriate target access point in this manner.

In another possible implementation manner, if the source access point determines that the terminal device does not support connection to the wireless core network according to the terminal capability information, the source access point does not consider configuring the CHO for the terminal device. Based on the mode, the access point does not need to configure CHO for the terminal equipment which does not support wireless network connection, thereby being beneficial to avoiding resource waste.

In the embodiment of the present application, the access point may be one device or may be divided into two parts. Fig. 1, fig. 4 and fig. 7 are described above with reference to a source access point as one device. The source access point may also be divided into two parts, PRAS and errg, respectively. The eRG is connected with the core network, has partial core network functions and is mainly responsible for data interaction with core network equipment. The PRAS is connected to the terminal device, and may have a complete base station function or only a partial base station function, and is mainly responsible for data interaction with the terminal device. The procedure for configuring conditional handover for the terminal device by the PRAS may refer to fig. 6. Except that the execution main body is changed from the source access point to the PRAS, the specific implementation manners of step 601 to step 603 are the same as those of step 101 to step 103, and the specific implementation manners of step 606 to step 608 are the same as those of step 106 to step 108, which is not described herein again in this embodiment of the present application.

601. The terminal device measures signal parameters of at least one access point (which may include, for example, a first access point, a second access point, and a third access point).

602. And the terminal equipment sends the measurement result corresponding to the at least one access point to the PRAS.

The measurement result includes the signal parameter of the access point measured by the terminal device in step 601 and the identifier corresponding to the access point.

603. And the PRAS determines the access point meeting the preset condition in the at least one access point as the access point to be selected according to the measuring result corresponding to the at least one access point.

The preset condition may be that the signal parameter of the access point is required to be within a preset value range. Exemplarily, if the signal parameter magnitudes of the first access point and the second access point are within a preset value range, the PRAS determines that the first access point and the second access point are to-be-selected access points; and if the signal parameter of the third access point is out of the preset value range, the PRAS judges that the third access point can not be used as the candidate access point.

604. The PRAS sends a CHO request to at least one candidate access point (exemplified by the first access point and the second access point) via the errg.

Wherein, the eRG only forwards the CHO request without performing other processing.

605. After the first access point and the second access point respectively receive the CHO requests, the first access point and the second access point respectively send CHO responses to the PRAS through the eRG.

Wherein, the eRG only forwards the CHO response and does not perform other processing.

606. And the PRAS generates CHO configuration information corresponding to the at least one access point to be selected according to the CHO response sent by the at least one access point to be selected.

607. The PRAS sends a Radio Resource Control Reconfiguration (RRCReconfiguration) message to the terminal device, where the RRCReconfiguration carries a condition switching configuration, and the condition switching configuration includes CHO configuration information corresponding to the first access point and CHO configuration information corresponding to the second access point.

608. The terminal equipment completes the CHO configuration according to the RRCReconfiguration message, and transmits a Radio Resource Control Reconfiguration Complete (RRCReconfiguration Complete) message to the PRAS.

Another handover method provided in the embodiment of the present application is described below based on fig. 6, please refer to fig. 7. Except that the execution main body is changed from the source access point to the PRAS, the specific implementation manners of step 701 and step 702 are the same as those of step 401 and step 402, and details are not described herein in the embodiments of the present application.

701. PRAS sends a conditional switch instruction to the terminal device.

In the embodiment of the application, after the PRAS judges that the eRG is disconnected with the wireless core network link, the PRAS sends a condition switching instruction to the terminal equipment to instruct the terminal equipment to perform condition switching. The PRAS determines that the link between the eRG and the wireless core network is disconnected in two ways, one is that the PRAS detects that the data sent to the wireless core network through the eRG is not sent successfully, and illustratively, after the data sent to the wireless core network through the eRG by the PRAS, the PRAS does not receive the response information sent by the wireless core network after exceeding a preset time; another is for the eRG to send information to the PRAS indicating that the eRG is disconnected from the link of the wireless core network.

702. And the terminal equipment is switched to a target access point in the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

Referring to fig. 8, fig. 8 is a schematic diagram illustrating another handover method according to an embodiment of the present application. Except that the execution subject is changed from the source access point to the PRAS, the specific implementation manners of steps 801 to 807 are the same as those of steps 501 to 507, and the embodiments of the present application are not described herein again.

801. And the terminal equipment sends the terminal capability information to the PRAS.

802. And the PRAS performs conditional switch configuration on the terminal equipment.

Specifically, the process of switching the configuration condition of the PRAS for the terminal device is shown in fig. 6, which is not described herein again in this embodiment of the present application.

803. The PRAS sends a disconnection indication to the terminal device.

After PRAS judges that the eRG is disconnected with the wireless core network link, PRAS sends a disconnection indication to the terminal equipment and indicates the terminal equipment to stop sending uplink data through the first link. The PRAS judges that the eRG and the wireless core network are disconnected in two ways, one way is that the PRAS detects that the data sent to the wireless core network by the eRG is not successfully sent, namely after the PRAS sends the data to the wireless core network by the eRG, the PRAS does not receive the response information sent by the wireless core network after exceeding the preset time; another is for the eRG to send information to the PRAS indicating that the eRG is disconnected from the link of the wireless core network.

804. And after receiving the disconnection indication, the terminal equipment stops sending the uplink data through the first link.

805. PRAS sends a conditional switch instruction to the terminal device.

In this embodiment, the sequence of executing step 804 and step 805 is not limited in this application. Step 805 may be performed first and then step 804 may be performed, or step 804 and step 805 may be performed simultaneously.

806. And the terminal equipment performs signal measurement on N access points to be selected in the at least one access point to be selected to obtain signal measurement results of the N access points to be selected.

807. And the terminal equipment is switched to the target access point according to the signal measurement results of the N access points to be selected and the CHO configuration information of the N access points to be selected.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication apparatus shown in fig. 9 may be used to perform part or all of the functions of the terminal device in fig. 2. The apparatus may be a terminal device, an apparatus in the terminal device, or an apparatus capable of being used in cooperation with the terminal device. Wherein, the communication device can also be a chip system. The communication apparatus shown in fig. 9 may include a communication unit 901 and a processing unit 902. The processing unit 902 is configured to perform data processing. A communication unit 901 configured to communicate with other devices. The communication unit 901 is integrated with a receiving unit and a transmitting unit. The communication unit 901 may also be referred to as a transceiving unit. Alternatively, communication section 901 may be divided into a reception section and a transmission section. The processing unit 902 and the communication unit 901 are the same, and are not described in detail below.

Wherein:

the communication unit 901 is configured to receive a conditional handover instruction sent by a source access point, where the conditional handover instruction includes conditional handover CHO configuration information of at least one access point to be selected; the processing unit 902 is configured to switch to a target access point of the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

Optionally, the CHO configuration information includes: the identifier of the candidate access point and the switching condition of the candidate access point.

In a possible implementation manner, before the communication unit 901 is configured to receive the conditional handover indication sent by the source access point, the communication unit 901 is further configured to receive a conditional handover configuration sent by the source access point, where the conditional handover configuration includes CHO configuration information of the at least one candidate access point.

In a possible implementation manner, the communication unit 901 is further configured to send terminal capability information to the source access point, where the terminal capability information is used to indicate that the terminal device supports connecting to the wireless core network.

In a possible implementation manner, the communication unit 901 is further configured to send a disconnection indication by the source access point, where the disconnection indication is used to indicate that the connection between the source access point and the wireless core network is disconnected.

In a possible implementation manner, after the communication unit 901 is configured to receive the disconnection indication sent by the source access point, the processing unit 902 is further configured to stop sending uplink data through the first link, where the first link is a link established through the wireless core network.

In a possible implementation manner, after the communication unit 901 is configured to receive the disconnection indication sent by the source access point, the communication unit 901 is further configured to stop sending uplink data through a first link, and send the uplink data using a second link, where the first link is a link established through the wireless core network, and the second link is a link established through the wired core network.

In a possible implementation manner, when the processing unit 902 is configured to switch to a target access point in the at least one access point to be selected according to the CHO configuration information of the at least one access point to be selected, the processing unit 902 is specifically configured to perform signal measurement on N access points to be selected in the at least one access point to be selected, so as to obtain signal measurement results of the N access points to be selected, where the signal measurement result of each access point to be selected in the N access points to be selected is used to indicate signal quality and/or signal strength of the access point to be selected, N is a positive integer, and a value of N is not greater than a total number of the at least one access point to be selected; the processing unit 902 is further specifically configured to switch to the target access point according to the signal measurement results of the N candidate access points and the CHO configuration information of the N candidate access points, where the target access point is one of the N candidate access points whose signal measurement results satisfy the CHO configuration information.

In a possible implementation manner, after the communication unit 901 is configured to receive a connection disconnection indication sent by the source access point, the processing unit 902 is further configured to disconnect the connection with the source access point; the processing unit 902 is further configured to make signal measurements of at least one nearby access point; the processing unit 902 is further configured to select one nearby access point from the at least one nearby access point for accessing the nearby access point based on the signal measurement result of the at least one nearby access point.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device shown in fig. 9 may be used to perform some or all of the functions of the source access point in any of the method embodiments described above. The apparatus may be a source access point, an apparatus in the source access point, or an apparatus capable of being used with the source access point. The communication apparatus shown in fig. 9 may include a communication unit 901 and a processing unit 902. Wherein:

the processing unit 902 is configured to obtain conditional access point CHO configuration information of at least one candidate access point; the communication unit 901 is configured to send a conditional handover indication to the terminal device, where the conditional handover indication includes conditional handover CHO configuration information of at least one candidate access point.

In a possible implementation manner, when the communication unit 901 is configured to send a conditional handover instruction to a terminal device, the communication unit 901 is specifically configured to detect that a connection with a wireless core network is disconnected, and send the conditional handover instruction to the terminal device.

Optionally, the CHO configuration information includes: the identifier of the access point to be selected and the switching condition of the access point to be selected.

In a possible implementation manner, the communication unit 901 is further configured to send a disconnection indication to the terminal device, where the disconnection indication is used to indicate that the connection between the source access point and the wireless core network is disconnected.

In a possible implementation manner, the communication unit 901 is further configured to send a conditional handover configuration to the terminal device, where the conditional handover configuration includes: CHO configuration information of the at least one candidate access point.

In a possible implementation manner, before the communication unit 901 is configured to send the conditional handover configuration to the terminal device, the communication unit 901 is further configured to receive terminal capability information sent by the terminal device, where the terminal capability information is used to indicate that the terminal device supports connection to the wireless core network.

The embodiment of the present application further provides a chip, where the chip may perform relevant steps of the terminal device in the foregoing method embodiment. The chip is used for:

the chip is used for receiving a conditional switch instruction sent by a source access point, wherein the conditional switch instruction comprises conditional switch CHO configuration information of at least one access point to be selected; the chip is further configured to switch to a target access point of the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

In a possible implementation manner, before the chip is configured to receive a conditional handover indication sent by a source access point, the chip is further configured to receive a conditional handover configuration sent by the source access point, where the conditional handover configuration includes CHO configuration information of the at least one candidate access point.

In a possible implementation manner, the chip is further configured to send terminal capability information to the source access point, where the terminal capability information is used to indicate that the terminal device supports connecting to a wireless core network.

In a possible implementation manner, the chip is further configured to send a disconnection indication, where the disconnection indication is used to indicate that the connection between the source access point and the wireless core network is disconnected.

In a possible implementation manner, after the chip is used for the terminal device to receive the disconnection indication sent by the source access point, the chip is further used to stop sending uplink data through the first link, where the first link is a link established through the wireless core network.

In a possible implementation manner, after the chip is configured to receive the disconnection indication sent by the source access point, the chip is further configured to stop sending uplink data through a first link, and send the uplink data using a second link, where the first link is a link established through the wireless core network, and the second link is a link established through the wired core network.

In a possible implementation manner, when the chip is used to switch to a target access point in the at least one access point to be selected according to CHO configuration information of the at least one access point to be selected, the chip is specifically configured to perform signal measurement on N access points to be selected in the at least one access point to be selected, so as to obtain signal measurement results of the N access points to be selected, the signal measurement result of each access point to be selected in the N access points to be selected is used to indicate signal quality and/or signal strength of the access point to be selected, the N is a positive integer, and a value of the N is not greater than a total number of the at least one access point to be selected; the chip is further specifically configured to switch to the target access point according to the signal measurement results of the N candidate access points and the CHO configuration information of the N candidate access points, where the target access point is one of the N candidate access points whose signal measurement results satisfy the CHO configuration information.

In a possible implementation manner, after the chip is configured to receive a connection disconnection indication sent by the source access point, the chip is further configured to disconnect the connection with the source access point; the chip is also used for measuring signals of at least one nearby access point; the chip is also used for selecting one nearby access point from the at least one nearby access point and accessing the nearby access point based on the signal measurement result of the at least one nearby access point.

The embodiment of the present application further provides a chip, where the chip may perform the relevant steps of the source access point in the foregoing method embodiments.

The chip is used for acquiring conditional access (CHO) configuration information of at least one access point to be selected; the chip is used for sending a conditional switch instruction to the terminal equipment, wherein the conditional switch instruction comprises conditional switch CHO configuration information of at least one access point to be selected.

In a possible implementation manner, when the chip is configured to send a conditional switching instruction to the terminal device, the chip is specifically configured to detect that the connection with the wireless core network is disconnected, and send the conditional switching instruction to the terminal device.

In a possible implementation manner, the chip is further configured to send a disconnection indication to the terminal device, where the disconnection indication is used to indicate disconnection between the source access point and the wireless core network.

In a possible implementation manner, the chip is further configured to send a conditional switching configuration to the terminal device, where the conditional switching configuration includes: CHO configuration information of the at least one candidate access point.

In a possible implementation manner, before the chip is configured to send the conditional switch configuration to the terminal device, the chip is further configured to receive terminal capability information sent by the terminal device, where the terminal capability information is used to indicate that the terminal device supports connection to the wireless core network.

Fig. 10 shows a communication apparatus 100 according to an embodiment of the present application, which is used for implementing the functions of the terminal device. The apparatus may be a terminal device or an apparatus for a terminal device. The means for the terminal device may be a system of chips or a chip within the terminal device. The chip system may be composed of a chip, or may include a chip and other discrete devices.

Or, the communication device 100 is configured to implement the function of the source access point. The apparatus may be a source access point or an apparatus for a source access point. The means for the source access point may be a system-on-chip or a chip within the source access point.

The communication apparatus 100 includes at least one processor 1020, which is configured to implement the data processing function of the terminal device in the method provided by the embodiment of the present application. The apparatus 100 may further include a communication interface 1010, configured to implement transceiving operations of a terminal device in the method provided in this embodiment. In embodiments of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, communication interface 1010 enables an apparatus in apparatus 100 to communicate with other devices. The processor 1020 transmits and receives data using the communication interface 1010 and is configured to implement the method described above with respect to the method embodiment of fig. 2.

The apparatus 100 may also include at least one memory 1030 for storing program instructions and/or data. A memory 1030 is coupled to the processor 1020. The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The processor 1020 may operate in conjunction with the memory 1030. Processor 1020 may execute program instructions stored in memory 1030. At least one of the at least one memory may be included in the processor.

When the device 100 is powered on, the processor 1020 can read the software program in the memory 1030, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 1020 outputs a baseband signal to a radio frequency circuit (not shown) after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through an antenna. When there is data to be transmitted to the apparatus 100, the rf circuit receives an rf signal through the antenna, converts the rf signal into a baseband signal, and outputs the baseband signal to the processor 1020, and the processor 1020 converts the baseband signal into data and processes the data.

In another implementation, the rf circuitry and antenna may be provided independently of the processor 1020 for baseband processing, for example in a distributed scenario, the rf circuitry and antenna may be in a remote arrangement independent of the communication device.

The specific connection medium among the communication interface 1010, the processor 1020 and the memory 1030 is not limited in the embodiments of the present application. In the embodiment of the present application, the memory 1030, the processor 1020, and the communication interface 1010 are connected by a bus 1040 in fig. 10, the bus is represented by a thick line in fig. 10, and the connection manner between other components is merely illustrative and not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.

When the apparatus 100 is specifically used in a terminal device, for example, when the apparatus 100 is specifically a chip or a chip system, the output or the reception of the communication interface 1010 may be a baseband signal. When the apparatus 100 is specifically a terminal device, the output or the reception of the communication interface 1010 may be a radio frequency signal. In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or execute the methods, operations, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The operations of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor.

As shown in fig. 11, fig. 11 is a schematic structural diagram of a module device according to an embodiment of the present disclosure. The module device 110 can perform the steps related to the terminal device in the foregoing method embodiments, and the module device 110 includes: a communication module 1101, a power module 1102, a memory module 1103, and a chip module 1104.

The power module 1102 is configured to provide power for the module device; the storage module 1103 is configured to store data and instructions; the communication module 1101 is configured to perform internal communication of a module device, or perform communication between the module device and an external device.

The chip module 1104 is configured to receive a conditional switch instruction sent by a source access point, where the conditional switch instruction includes conditional switch CHO configuration information of at least one access point to be selected; the chip module 1104 is further configured to switch to a target access point of the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

In a possible implementation manner, before the chip module 1104 is configured to receive a conditional switching instruction sent by a source access point, the chip module 1104 is further configured to receive a conditional switching configuration sent by the source access point, where the conditional switching configuration includes CHO configuration information of the at least one candidate access point.

In a possible implementation manner, the chip module 1104 is further configured to send terminal capability information to the source access point, where the terminal capability information is used to indicate that the terminal device supports connecting to a wireless core network.

In a possible implementation manner, the chip module 1104 is further configured to send a disconnection indication by the source access point, where the disconnection indication is used to indicate that the connection between the source access point and the wireless core network is disconnected.

In a possible implementation manner, after the chip module 1104 is configured to receive, by the terminal device, a connection disconnection indication sent by the source access point, the chip module 1104 is further configured to stop sending uplink data through a first link, where the first link is a link established through the wireless core network.

In a possible implementation manner, after the chip module 1104 is configured to receive the disconnection indication sent by the source access point, the chip module 1104 is further configured to stop sending uplink data through a first link, and send the uplink data using a second link, where the first link is a link established through the wireless core network, and the second link is a link established through the wired core network.

In a possible implementation manner, when the chip module 1104 is configured to switch to a target access point in the at least one candidate access point according to CHO configuration information of the at least one candidate access point, the chip module 1104 is specifically configured to perform signal measurement on N candidate access points in the at least one candidate access point to obtain signal measurement results of the N candidate access points, where the signal measurement result of each candidate access point in the N candidate access points is used to indicate signal quality and/or signal strength of the candidate access point, N is a positive integer, and a value of N is not greater than a total number of the at least one candidate access point; the chip module 1104 is further specifically configured to switch to the target access point according to the signal measurement result of the N candidate access points and the CHO configuration information of the N candidate access points, where the target access point is one of the N candidate access points whose signal measurement result meets the CHO configuration information.

In a possible implementation manner, after the chip module 1104 is configured to receive a connection disconnection instruction sent by the source access point, the chip module 1104 is further configured to disconnect the source access point; the chip module 1104 is further configured to perform signal measurement on at least one nearby access point; the chip module 1104 is further configured to select a nearby access point from the at least one nearby access point to access the nearby access point based on the signal measurement result of the at least one nearby access point.

As shown in fig. 11, fig. 11 is a schematic structural diagram of a module device according to an embodiment of the present disclosure. The module device 110 can perform the steps related to the access point in the foregoing method embodiments, and the module device 110 includes: a communication module 1101, a power module 1102, a memory module 1103, and a chip module 1104.

The power module 1102 is configured to provide power for the module device; the storage module 1103 is configured to store data and instructions; the communication module 1101 is configured to perform module device internal communication, or perform module device communication with an external device.

The chip module 1104 is configured to obtain conditional access (CHO) configuration information of at least one candidate access point; the chip module 1104 is configured to send a conditional switch instruction to the terminal device, where the conditional switch instruction includes conditional switch CHO configuration information of at least one candidate access point.

In a possible implementation manner, when the chip module 1104 is configured to send a condition switching instruction to the terminal device, the chip module 1104 is specifically configured to detect that the connection with the wireless core network is disconnected, and send the condition switching instruction to the terminal device.

In a possible implementation manner, the chip module 1104 is further configured to send a disconnection indication to the terminal device, where the disconnection indication is used to indicate that the connection between the source access point and the wireless core network is disconnected.

In a possible implementation manner, the chip module 1104 is further configured to send a conditional switching configuration to the terminal device, where the conditional switching configuration includes: CHO configuration information of the at least one candidate access point.

In a possible implementation manner, before the chip module 1104 is configured to send the conditional switch configuration to the terminal device, the chip module 1104 is further configured to receive terminal capability information sent by the terminal device, where the terminal capability information is used to indicate that the terminal device supports connection to a wireless core network.

Embodiments of the present application further provide a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium is executed on a processor, the method flow of the above method embodiments is implemented.

Embodiments of the present application further provide a computer program product, where when the computer program product runs on a processor, the method flow of the above method embodiments is implemented.

It is noted that, for simplicity of explanation, the foregoing method embodiments are described as a series of acts or combination of acts, but those skilled in the art will appreciate that the present application is not limited by the order of acts, as some acts may, in accordance with the present application, occur in other orders and/or concurrently. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.

The descriptions of the embodiments provided in the present application may refer to each other, and the descriptions of the embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments. For convenience and simplicity of description, for example, the functions and operations performed by each device and apparatus provided in the embodiments of the present application may refer to the relevant description of the method embodiments of the present application, and may also be referred to, combined with or incorporated into each other among the method embodiments and the device embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of handover, the method comprising:

the method comprises the steps that terminal equipment receives a conditional switching instruction sent by a source access point, wherein the conditional switching instruction comprises conditional switching (CHO) configuration information of at least one access point to be selected;

and the terminal equipment is switched to a target access point in the at least one access point to be selected according to the CHO configuration information of the at least one access point to be selected.

2. The method of claim 1, wherein the CHO configuration information comprises: and the identification of the access point to be selected and the switching condition of the access point to be selected.

3. The method according to claim 1 or 2, wherein before the terminal device receives the conditional handover indication sent by the source access point, the method further comprises:

and the terminal equipment receives a conditional switching configuration sent by the source access point, wherein the conditional switching configuration comprises CHO configuration information of the at least one access point to be selected.

4. The method of claim 3, further comprising:

and the terminal equipment sends terminal capability information to the source access point, wherein the terminal capability information is used for indicating that the terminal equipment supports connection to a wireless core network.

5. The method according to any of claims 1-4, further comprising:

and the terminal equipment receives a disconnection instruction sent by the source access point, wherein the disconnection instruction is used for indicating the disconnection between the source access point and the wireless core network.

6. The method according to claim 5, wherein after the terminal device receives the disconnection indication sent by the source access point, the method further comprises:

and the terminal equipment stops sending uplink data through a first link, wherein the first link is established through the wireless core network.

7. The method of claim 5, wherein the source access point is connected to a wired core network;

after the terminal device receives the disconnection indication sent by the source access point, the method further includes:

the terminal device stops sending uplink data through a first link, and sends the uplink data through a second link, wherein the first link is a link established through the wireless core network, and the second link is a link established through the wired core network.

8. The method according to any one of claims 1 to 7, wherein the handing over, by the terminal device, to a target access point of the at least one candidate access point according to the CHO configuration information of the at least one candidate access point comprises:

the terminal device measures signals of N access points to be selected in the at least one access point to be selected to obtain signal measurement results of the N access points to be selected, the signal measurement result of each access point to be selected in the N access points to be selected is used for indicating the signal quality and/or the signal strength of the access point to be selected, N is a positive integer, and the value of N is not greater than the total number of the at least one access point to be selected;

and the terminal equipment is switched to the target access point according to the signal measurement results of the N access points to be selected and the CHO configuration information of the N access points to be selected, wherein the target access point is one access point to be selected of the N access points to be selected, the signal measurement result of which meets the CHO configuration information.

9. The method of claim 8, wherein the target access point is a candidate access point with a best signal measurement result among M candidate access points, and the M candidate access points are candidate access points satisfying CHO configuration information among the N candidate access points.

10. The method according to claim 5, wherein after the terminal device receives the disconnection indication sent by the source access point, the method further comprises:

the terminal equipment disconnects from the source access point;

the terminal equipment measures signals of at least one nearby access point;

the terminal device selects one nearby access point from the at least one nearby access point based on the signal measurement result of the at least one nearby access point, and accesses the nearby access point.

11. A method of handover, the method comprising:

the method comprises the steps that a source access point obtains conditional switch (CHO) configuration information of at least one access point to be selected;

the source access point sends a conditional switch instruction to the terminal equipment, wherein the conditional switch instruction comprises conditional switch CHO configuration information of at least one access point to be selected.

12. The method of claim 11, wherein the source access point sends a conditional switch indication to the terminal device, and wherein the conditional switch indication comprises:

and the source access point detects that the connection with the wireless core network is disconnected and sends the conditional switching instruction to the terminal equipment.

13. The method according to claim 11 or 12, wherein the CHO configuration information comprises: the access point identifier to be selected and the switching condition of the access point to be selected.

14. The method according to any one of claims 11 to 13, further comprising:

and the source access point sends a disconnection indication to the terminal equipment, wherein the disconnection indication is used for indicating the disconnection between the source access point and the wireless core network.

15. The method according to any one of claims 11 to 14, further comprising:

the source access point sends a conditional switching configuration to the terminal equipment, wherein the conditional switching configuration comprises: CHO configuration information of the at least one candidate access point.

16. The method of claim 15, wherein before the source access point sends the conditional handover configuration to the terminal device, the method further comprises:

and the source access point receives terminal capability information sent by the terminal equipment, wherein the terminal capability information is used for indicating that the terminal equipment supports connection to a wireless core network.

17. A communication apparatus, characterized in that the communication apparatus comprises a communication unit and a processing unit, wherein:

the communication unit is used for receiving a conditional handover instruction sent by a source access point, wherein the conditional handover instruction comprises Conditional Handover (CHO) configuration information of at least one access point to be selected;

the processing unit is configured to switch to a target access point of the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

18. A communication apparatus, characterized in that the communication apparatus comprises a communication unit and a processing unit, wherein:

the processing unit is used for acquiring conditional switch (CHO) configuration information of at least one access point to be selected;

the communication unit is configured to send a conditional handover instruction to a terminal device, where the conditional handover instruction includes conditional handover CHO configuration information of at least one candidate access point.

19. A communication device comprising a processor, a memory, and a transceiver;

the transceiver is used for receiving channels or signals or sending channels or signals;

the memory for storing a computer program;

the processor for invoking the computer program from the memory to perform the method of any of claims 1-16.

20. A chip, characterized in that,

the chip is used for receiving a conditional switch instruction sent by a source access point, wherein the conditional switch instruction comprises conditional switch (CHO) configuration information of at least one access point to be selected;

the chip is further configured to switch to a target access point of the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

21. A chip, characterized in that,

the chip is used for acquiring conditional access point (CHO) configuration information of at least one access point to be selected;

the chip is used for sending a condition switching instruction to the terminal equipment, wherein the condition switching instruction comprises condition switching CHO configuration information of at least one access point to be selected.

22. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

the power supply module is used for providing electric energy for the module equipment;

the storage module is used for storing data and instructions;

the communication module is used for carrying out internal communication of module equipment or is used for carrying out communication between the module equipment and external equipment;

the chip module is used for:

receiving a conditional switching instruction sent by a source access point, wherein the conditional switching instruction comprises conditional switching (CHO) configuration information of at least one access point to be selected;

and switching to a target access point in the at least one candidate access point according to the CHO configuration information of the at least one candidate access point.

23. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

the storage module is used for storing data and instructions;

the chip module is used for:

acquiring conditional access point (CHO) configuration information of at least one access point to be selected;

sending a conditional handover indication, wherein the conditional handover indication comprises Conditional Handover (CHO) configuration information of at least one access point to be selected.

24. A computer-readable storage medium, in which a computer program is stored which, when run on a communication apparatus, causes the communication apparatus to perform the method of any one of claims 1 to 16.