Handover method and device

Abstract

The present application relates to a handover method and a device. The handover method comprises: a terminal device sends a first message to an access node, the first message being used for the access node to determine a target access node other than a first access node corresponding to a first access network . The present application can solve the problem of handover in multi-access scenarios.

Description

Handover method and device TECHNICAL FIELD

[0001] The present application relates to the field of communication, and more particularly, to a handover method and device. BACKGROUND

[0002] In the current handover mechanism, for a multi-access scenario, the source access node is unaware of the association relationship between the two access networks of the terminal device. When the source access node receives the measurement information reported by the terminal device, it may select the same target access network (AN) as another associated AN due to the measurement signal, resulting in the two accesses of the UE being switched to the same AN, and thus losing the gain of multi-access. Alternatively, it may select a target AN that uses the same RAT as another associated AN, resulting in the two accesses of the UE being switched to the AN of the same RAT, and thus losing the gain of multi-access. It can be seen that how to perform handover in a multi-access scenario is a technical problem to be solved.

[0003] SUMMARY

[0004] Embodiments of the present application provide a handover method and device.

[0005] Embodiments of the present application provide a handover method, comprising:

[0006] The terminal device sends a first message to the access node, the first message being used by the access node to exclude a first access node corresponding to a first access network when determining a target access node.

[0007] Embodiments of the present application provide a handover method, comprising:

[0008] The access node receives a first message sent by the terminal device;

[0009] The access node excludes a first access node corresponding to a first access network when determining a target access node according to the first message.

[0010] Embodiments of the present application provide a handover method, comprising:

[0011] The first network element sends first indication information to the access node, the first indication information being used to instruct the access node to exclude a first access node corresponding to a first access network when determining a target access node.

[0012] Embodiments of the present application provide a terminal device, comprising:

[0013] The first transceiver module is configured to send a first message to the access node, the first message being used by the access node to exclude a first access node corresponding to a first access network when determining a target access node.

[0014] The embodiment of the present application provides an access node, comprising:

[0015] The second transceiver is configured to receive a first message sent by the terminal device.

[0016] The first processing module is configured to exclude a first access node corresponding to the first access network when determining the target access node according to the first message.

[0017] The embodiment of the present application provides a first network element, comprising:

[0018] The third transceiver is configured to send first indication information to the access node, wherein the first indication information is used for indicating the access node to exclude the first access node corresponding to the first access network when determining the target access node.

[0019] The embodiment of the present application provides a terminal device, comprising a transceiver, a processor and a memory. The memory is configured to store a computer program, the transceiver is configured to communicate with other devices, and the processor is configured to call and run the computer program stored in the memory, so that the terminal device executes the switching method.

[0020] The embodiment of the present application provides a network device, comprising a transceiver, a processor and a memory. The memory is configured to store a computer program, the transceiver is configured to communicate with other devices, and the processor is configured to call and run the computer program stored in the memory, so that the network device executes the switching method.

[0021] The embodiment of the present application provides a chip, which is used for implementing the switching method.

[0022] Specifically, the chip comprises a processor configured to call and run a computer program from a memory, so that a device installed with the chip executes the switching method.

[0023] The embodiment of the present application provides a computer readable storage medium, which is used for storing a computer program, and when the computer program is run by a device, the device executes the switching method.

[0024] The embodiment of the present application provides a computer program product, comprising computer program instructions, and the computer program instructions make a computer execute the switching method.

[0025] The embodiment of the present application provides a computer program, which, when running on a computer, makes the computer execute the switching method.

[0026] In an embodiment of the present application, the terminal device sends a first message to the access node, the first message being used for the access node to exclude a first access node corresponding to a first access network when determining a target access node, so as to avoid switching one of the access networks to the same AN or RAT as another access network in the switching process in a multi-access scenario. BRIEF DESCRIPTION OF DRAWINGS

[0027] FIG. 1 illustrates a communication system 100.

[0028] FIG. 2 is a schematic diagram of a 5G network architecture.

[0029] FIG. 3A is a schematic diagram of a multi-access network.

[0030] FIG. 3B is a schematic diagram of a multi-access network.

[0031] FIG. 4 is a schematic diagram of a switching mechanism.

[0032] FIG. 5 is a schematic flowchart of a switching method 500 according to an embodiment of the present application.

[0033] FIG. 6 is a schematic flowchart of a switching method 600 according to an embodiment of the present application.

[0034] FIG. 7 is a schematic flowchart of a switching method 700 according to an embodiment of the present application.

[0035] FIG. 8 is an implementation flowchart according to an embodiment of the present application.

[0036] FIG. 9 is an implementation flowchart according to an embodiment of the present application.

[0037] FIG. 10 is an implementation flowchart according to an embodiment of the present application.

[0038] FIG. 11 is an implementation flowchart according to an embodiment of the present application.

[0039] FIG. 12 is a schematic block diagram of a terminal device 1200 according to an embodiment of the present application.

[0040] FIG. 13 is a schematic block diagram of an access node 1300 according to an embodiment of the present application.

[0041] FIG. 14 is a schematic block diagram of a first network element 1400 according to an embodiment of the present application.

[0042] FIG. 15 is a schematic block diagram of a communication device 1500 according to an embodiment of the present application.

[0043] FIG. 16 is a schematic block diagram of a chip 1600 according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0045] The technical solutions in the embodiments of the present application can be applied to various communication systems, for example, a Long Term Evolution (LTE) system, an Advanced long term evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, a LTE-based access to unlicensed spectrum (LTE-U) system, a NR-based access to unlicensed spectrum (NR-U) system, a Non-Terrestrial Networks (NTN) system, a Universal Mobile Telecommunication System (UMTS), a Wireless Local Area Networks (WLAN), a Wireless Fidelity (WiFi), a 5th-Generation (5G) system, or other communication systems, etc.

[0046] Generally, a conventional communication system supports a limited number of connections, and is easy to implement. However, with the development of communication technology, a mobile communication system will not only support conventional communication, but also support, for example, Device to Device (D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0047] In an implementation manner, the communication system in the embodiments of the present application can be applied to a Carrier Aggregation (CA) scenario, can also be applied to a Dual Connectivity (DC) scenario, and can also be applied to a Standalone (SA) network deployment scenario.

[0048] In an implementation, the communication system in embodiments of the present application can be applied to unlicensed spectrum, which can also be considered as shared spectrum, or applied to licensed spectrum, which can also be considered as unshared spectrum.

[0049] Embodiments of the present application describe various embodiments in combination with network devices and terminal devices, wherein the terminal device can also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc.

[0050] The terminal device can be a station (STA) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device having wireless communication function, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0051] In embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable, or in-vehicle; can also be deployed on water surface (such as ships, etc.); and can also be deployed in the air (such as airplanes, balloons, and satellites, etc.).

[0052] In embodiments of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, or a wireless terminal device in smart home, etc.

[0053] By way of example and not limitation, in embodiments of the present application, the terminal device can also be a wearable device. The wearable device can also be referred to as a wearable smart device, which is a general term for devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothing, and shoes. The wearable device is a portable device that is directly worn on the body or integrated into the clothes or accessories of the user. The wearable device is not only a hardware device, but also a device that realizes powerful functions through software support and data interaction and cloud interaction. The broad sense of wearable smart devices includes devices with full functions and large sizes that can realize complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and devices that focus on a certain type of application function and need to be used in cooperation with other devices, such as smart phones, such as various smart wristbands and smart jewelry for monitoring vital signs.

[0054] In embodiments of the present application, the network device can be a device for communicating with the mobile device, and the network device can be an access point (Access Point, AP) in a WLAN, an evolved node B (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or an access point, or a vehicle-mounted device, a wearable device, and a network device in an NR network (gNB) or a future evolved PLMN network or a network device in an NTN network, etc.

[0055] By way of example and not limitation, in embodiments of the present application, the network device can have mobile characteristics, for example, the network device can be a mobile device. Alternatively, the network device can be a satellite, a balloon station. For example, the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geostationary earth orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, etc. Alternatively, the network device can also be a base station arranged at a position on land, water, etc.

[0056] In the embodiments of the present application, the network device can serve a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell. The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell (Small cell). The small cell can include a metro cell, a micro cell, a pico cell, a femto cell, and the like. The small cell has the characteristics of small coverage and low transmit power, and is suitable for providing high-speed data transmission services.

[0057] FIG. 1 illustrates a communication system 100. The communication system includes one network device 110 and two terminal devices 120. In an embodiment, the communication system 100 can include multiple network devices 110, and each network device 110 can include other numbers of terminal devices 120 within its coverage, which is not limited in the embodiments of the present application.

[0058] In an embodiment, the communication system 100 can further include a mobility management entity (MME), an access and mobility management function (AMF), and other network entities, which are not limited in the embodiments of the present application.

[0059] The network device can include an access network device and a core network device. That is, the wireless communication system further includes multiple core networks for communicating with the access network device. The access network device can be an evolved node B (eNB or e-NodeB) macro base station, a micro base station (also referred to as a “small base station”), a pico base station, an access point (AP), a transmission point (TP), or a new generation Node B (gNodeB) in a long-term evolution (LTE) system, a next radio (NR) system, or an authorized auxiliary access long-term evolution (LAA-LTE) system.

[0060] It should be understood that the devices with communication function in the network / system in the embodiments of the present application can be referred to as communication devices. For example, the communication system shown in FIG. 1, the communication devices can include network devices and terminal devices with communication function, which can be specific devices in the embodiments of the present application, and will not be described here. The communication devices can also include other devices in the communication system, such as network controllers, mobile management entities and other network entities, which are not limited in the embodiments of the present application.

[0061] It should be understood that the terms "system" and "network" are often used interchangeably in this paper. The term "and / or" in this paper is only used to describe the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " generally represents an "or" relationship between the associated objects before and after it.

[0062] It should be understood that the "indication" mentioned in the embodiments of the present application can be direct indication, indirect indication, or can represent an associated relationship. For example, A indicates B, which can mean that B can be obtained through A, or A indirectly indicates B, for example, A indicates C, and B can be obtained through C, or A and B have an associated relationship.

[0063] In the description of the embodiments of the present application, the term "corresponding" can represent a direct or indirect corresponding relationship between the two, or an associated relationship between the two, or an indication and being indicated, configuration and being configured, etc.

[0064] In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described as follows, which can be combined with the technical solutions of the embodiments of the present application in any way as optional schemes, and all belong to the protection scope of the embodiments of the present application.

[0065] Figure 2 is a schematic diagram of a 5G architecture. In the figure, a UE accesses an access network (AN) through a Uu interface to perform access layer connection and exchange access layer messages and wireless data transmission. The UE accesses an access and mobility management function (AMF) through an N1 interface to perform non-access stratum (NAS) connection and exchange NAS messages. The AMF is a mobility management function in a core network, and the SMF is a session management function in the core network. The AMF is responsible for forwarding session management related messages between the UE and the SMF in addition to mobility management of the UE. The PCF is a policy management function in the core network, and is responsible for formulating policies related to mobility management, session management, charging, and the like of the UE. The UPF is a user plane function in the core network, and performs data transmission with an external data network through an N6 interface and data transmission with the AN through an N3 interface.

[0066] Currently, in order to fully utilize the network resources and spectrum of multiple access networks, multiple 3GPP access networks (such as 4G networks, 5G networks, 6G networks, NTN networks, non-3GPP networks, and the like) cooperate to achieve flexible offloading and switching of data traffic between two or more access networks, and multiple access technologies are introduced. The anchor point of the data traffic is in the core network, and there is no requirement for direct connection or data transmission between access nodes of different ANs. Specifically, two possible architectures of multiple access services are shown in Figures 3A and 3B.

[0067] The scenario shown in Figure 3A is that a multiple access node (which can be a UE, a terminal device, or other multiple access nodes) simultaneously accesses different radio access technology (RAT) access networks, but different RATs access the same core network. As shown in Figure 3A, the multiple access node is connected to an access node of AN1 and accesses the core network through the access node of AN1. At the same time, the multiple access node is connected to an access node of AN2 and accesses the core network through the access node of AN2. In addition, the access node of AN1 and the access node of AN2 do not require direct connection or data transmission.

[0068] Figure 3B shows a scenario where the multi-access node (possibly a UE, terminal device or other multi-access node) simultaneously accesses different access networks of different RATs, and the different RATs access different core networks. As shown in Figure 3B, the multi-access node is connected to the access node of AN1 and accesses core network 1 through the access node of AN1; at the same time, the multi-access node is connected to the access node of AN2 and accesses core network 2 through the access node of AN2; and / or, the access node of AN1 and the access node of AN2 do not require direct connection or data transmission.

[0069] To ensure the multi-access gain of the same device, it is necessary to avoid switching one of the access networks to the same AN or RAT as the other access network during the handover process. For example, a device (Divice) simultaneously accesses two access networks, including AN1 and AN2; when the device sends measurement information to the access node corresponding to AN1, it is necessary to avoid the access node corresponding to AN1 switching the access of the device to AN2, or switching the access of the device to another AN using the same radio access technology (such as RAT2 in Figures 3A or 3B) as AN2.

[0070] The existing handover mechanism is shown in Figure 4, and the main handover steps include:

[0071] Step 0: The AMF configures the mobile control information to the source access node (Source gNB), which may include, among other things, roaming information and access restriction information; the access restriction information may include prohibited RAT information, prohibited area information, service area restriction information, etc.

[0072] Step 1: The Source gNB configures the measurement reporting control information of the UE, which may include, among other things, an excluded cell list or an allowed cell list, and may also include center frequency information of neighboring cells, etc. The UE reports measurement information to the Source gNB according to the measurement reporting control information of the Source gNB, which may include power information of the measured cells, corresponding measurement configuration ID, etc.

[0073] Step 2: The Source gNB decides to perform handover according to the measurement results reported by the UE, and determines the target access node (Target gNB).

[0074] Step 3: The Source gNB sends handover request information to the Target gNB, which may include, among other things, target cell identification (Cell ID) information, etc.

[0075] Step 4: The Target gNB receives the handover request and performs admission control, which mainly includes which sessions can be handed over, etc.

[0076] Step 5: Target gNB feeds back the handover response information to Source gNB.

[0077] Step 6: Subsequent handover procedure.

[0078] It can be seen that the selection of the Target gNB and the selection of the Target Cell are both determined by the Source gNB according to the measurement information reported by the UE. The measurement information reported by the UE is measured according to the configuration of the Source gNB, and further, the measurement control information is determined by the Source gNB according to some limit information configured by the AMF.

[0079] In the current handover mechanism, for a multi-access scenario, the source access node does not know the association relationship between the two access networks of the terminal device. When the source access node receives the measurement information reported by the terminal device, it may select the same target AN as another associated access network (AN) due to the measurement signal, resulting in that the two accesses of the UE are switched to the same AN, and thus the gain of multi-access is lost. Or, it may select a target AN that uses the same RAT as another associated AN, resulting in that the two accesses of the UE are switched to the AN of the same RAT, and thus the gain of multi-access is lost.

[0080] Since the current handover mechanism does not have corresponding optimization adjustment for the multi-access scenario, if the existing handover mechanism is reused, the originally independent two accesses may be switched to the same AN or the AN of the same RAT, resulting in the loss of the gain of multi-access.

[0081] Embodiments of the present application propose a handover method, which is applicable to a multi-access scenario and can avoid the above problems.

[0082] FIG. 5 is a schematic flowchart of a handover method 500 according to an embodiment of the present application. The method can be applied to any of the systems shown in FIGS. 1 to 4, but is not limited thereto. The method includes at least part of the following content.

[0083] S510, the terminal device sends a first message to the access node, the first message being used to exclude the first access node corresponding to the first access network by the access node when determining a target access node.

[0084] In some embodiments, the terminal device can be a multi-access node containing a plurality of terminal devices, or a terminal device containing a plurality of Subscriber Identification Modules (SIMs) or network cards, or a single terminal device.

[0085] In some examples, the first message is sent when the terminal device is in multi-access service. Based on the first message, the access node receiving the first message can exclude the first access node corresponding to the first access network when determining the target access node, i.e., not taking the first access node corresponding to the first access network as the target access node, so as to avoid switching to the same access network as another access network (i.e., the first access network) of the terminal device.

[0086] In some embodiments, before the terminal device sends the first message to the access node, the terminal device further performs at least one of the following:

[0087] The terminal device sends indication information of multi-access service to the core network;

[0088] The terminal device receives response information of multi-access service sent by the core network;

[0089] The terminal device sends an activation request of multi-access service to the core network;

[0090] The terminal device receives an activation response of multi-access service from the core network.

[0091] Through the above process, the terminal device enters multi-access service, and then can send the first message under multi-access service.

[0092] In some embodiments, the multi-access service includes that the terminal device accesses at least two access networks simultaneously. The access node in the above step S510 does not belong to the first access network.

[0093] For example, the terminal device sends a first message to an access node (such as the access node of AN1 in FIGS. 3A / 3B) to indicate that the access node of AN1 excludes the access node corresponding to the first access network (such as AN2 in FIGS. 3A / 3B) when determining the target access node; wherein the access node corresponding to AN2 can include the access node of AN2, and can also include the access node of another access network using RAT2.

[0094] Through the above process, the terminal device confirms that it is in multi-access service; in this case, the terminal device can send a first message to the access node to indicate that the access node avoids switching access to the first access node corresponding to the first access network.

[0095] The terminal device sends a measurement report to the access node after receiving the measurement configuration information sent by the access node; wherein the measurement configuration information can contain AN / RAT related cell information that needs to be measured and reported by the terminal device. According to the measurement configuration information, the terminal device can report the measurement report to the access node, which contains the measurement information of all cells indicated in the measurement configuration information that need to be measured and reported. If the measurement report contains the measurement information of the cell signal related to the first access network, the terminal device can instruct the access node to exclude the first access node corresponding to the first access network when determining the target access node. Alternatively, according to the measurement configuration information, the terminal device can report the measurement report to the access node, which contains other measurement information except the measurement information of the cell signal related to the first access network, thereby avoiding the access node selecting the first access node corresponding to the first access network when determining the target access node.

[0096] Specifically, the embodiments of the present application at least propose the following ways:

[0097] Way one:

[0098] The terminal device receives the measurement configuration information sent by the access node, which requires the terminal device to report a plurality of cell measurement information, including the measurement information of the cell signal related to the first access network; the terminal device sends a measurement report to the access node, which excludes the measurement information of the cell signal related to the first access network. Specifically, the terminal device can perform normal measurement estimation according to the measurement configuration information received from the access node when measuring; and when reporting the measurement report, it excludes the measurement information of the cell signal related to the first access network and only reports the measurement information of the cell signal not related to the first access network. Alternatively, the terminal device can not measure the cell signal related to the first access network when measuring, only measure the cell signal not related to the first access network indicated in the measurement configuration information, and report the measurement information to the access node. In this example, the first message sent by the terminal device to the access node includes the measurement report.

[0099] In this way, the terminal device can report the measurement signal not related to the first access network to the access node, so that the access node can avoid switching to the first access node corresponding to the first access network when switching.

[0100] For example, in the scenario shown in FIG. 3A / 3B, in the initial state, the terminal device accesses two access networks, including AN1 and AN2; the access node of AN1 sends measurement configuration information to the terminal device, according to which the terminal device sends a measurement report to the access node of AN1, which excludes the measurement information of the cell signal related to AN2, thereby avoiding the access node of AN1 switching the current access to the access node corresponding to AN2. The access node corresponding to AN2 can include the access node of AN2 and the access node of other ANs using the same RAT as AN2.

[0101] Method two:

[0102] The terminal device sends a measurement report to the access node, which contains the measurement information of the cell signal related to the first access network, and also carries first indication information, which is used to instruct the access node to exclude the first access node corresponding to the first access network when determining the target access node. In this example, the first message sent by the terminal device to the access node includes the measurement report.

[0103] In an example, the first indication information can include multiple marking information, each of which is used to mark the measurement information of a cell signal related to the first access network.

[0104] Specifically, the terminal device can perform normal measurement estimation according to the measurement configuration information received from the access node when measuring, and report all the measurement information to the access node. If the reported measurement information includes the measurement information of the cell signal related to the first access network, the measurement report can also carry the first indication information, which includes multiple marking information.

[0105] In an example, each measurement information included in the measurement report corresponds to a marking information, which takes a first value (such as 1, or other values) when marking that the corresponding measurement information is the measurement information of the cell signal related to the first access network; and takes a second value (such as 0, or other values) when marking that the corresponding measurement information is not the measurement information of the cell signal related to the first access network.

[0106] In another example, each measurement information of the cell signals related to the first access network in the measurement report corresponds to a marking information. If a certain measurement information in the measurement report has a corresponding marking information, it means that the measurement information is the measurement information of the cell signal related to the first access network; if a certain measurement information in the measurement report does not have a corresponding marking information, it means that the measurement information is not the measurement information of the cell signal related to the first access network. Alternatively, a reverse manner can also be used, for example, if a certain measurement information has a corresponding marking information, it means that the measurement information is not the measurement information of the cell signal related to the first access network; if a certain measurement information does not have a corresponding marking information, it means that the measurement information is the measurement information of the cell signal related to the first access network.

[0107] In this way, the terminal device can indicate to the access node which measurement information in the measurement report is related to the first access network, so that the access node can avoid selecting these measurement information related to the first access network when performing handover, and thus can avoid handover to the first access node corresponding to the first access network.

[0108] Taking the scenario shown in FIG. 3A / 3B as an example, in the initial state, the terminal device accesses two access networks, including AN1 and AN2; the access node of AN1 sends measurement configuration information to the terminal device, and according to the measurement configuration information, the terminal device sends a measurement report to the access node of AN1, the measurement report contains measurement information of the cell signals related to AN2, and the measurement information of the cell signals related to AN2 is marked, according to the marking, the access node of AN1 can avoid handover to the access node corresponding to AN2 when performing handover. The access node corresponding to AN2 can include the access node of AN2 and the access node of other ANs using the same RAT as AN2.

[0109] Method three:

[0110] In some examples, the first message sent by the terminal device to the access node can include a measurement report. For example, the terminal device sends a measurement report to the access node, the measurement report contains measurement information of the cell signals related to the first access network, and the measurement report also carries first indication information, which is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

[0111] Alternatively, in some examples, the first message sent by the terminal device to the access node can include a measurement report and first indication information. For example, the terminal device sends a measurement report and another message to the access node, the measurement report contains measurement information of the cell signals related to the first access network, and the other message carries the first indication information.

[0112] In an example, the first indication information can comprise at least one of:

[0113] an indication that the terminal device is in multi-access service;

[0114] an identity of a RAT used by the first access network;

[0115] an identity of a first access node corresponding to the first access network;

[0116] an identity of a cell of the first access node corresponding to the first access network;

[0117] an identity of an access node corresponding to another access network using the same RAT as the first access network;

[0118] an identity of a cell of the access node corresponding to the another access network using the same RAT as the first access network.

[0119] Specifically, the terminal device performs normal measurement estimation according to the measurement configuration information received from the access node when performing measurement, and reports all the measurement information to the access node. If the measurement information reported contains measurement information of a cell signal related to the first access network, the measurement report can also carry the first indication information; or the terminal device can send another message carrying the first indication information.

[0120] If the first indication information is an indication that the terminal device is in multi-access service, the access node can know from the first indication information that the terminal device is in multi-access service, and then the access node can query another associated access network (i.e. the first access network) to exclude the first access node corresponding to the first access network when determining the target access node.

[0121] Or, if the first indication information is an identity of a RAT used by the first access network, the access node can exclude the access nodes corresponding to the access networks using the RAT (including the first access network and possibly other access networks) according to the first indication information.

[0122] Or, if the first indication information comprises at least one of an identity of a first access node corresponding to the first access network, an identity of a cell of the first access node corresponding to the first access network, an identity of an access node corresponding to another access network using the same RAT as the first access network, and an identity of a cell of the access node corresponding to the another access network using the same RAT as the first access network, the access node can determine the first access node corresponding to the first access network according to the aforementioned identities, and thus exclude the first access node corresponding to the first access network and the access nodes corresponding to the another access network using the same RAT as the first access network.

[0123] For example, in the scenario shown in FIG. 3A / 3B, in the initial state, the terminal device accesses two access networks simultaneously, including AN1 and AN2; the access node of AN1 sends measurement configuration information to the terminal device, according to the measurement configuration information, the terminal device sends a measurement report to the access node of AN1, the measurement report contains measurement information of the cell signal related to AN2, and the measurement report also carries first indication information, the specific content of the first indication information is as described above. According to the measurement report, when performing handover, the access node of AN1 can avoid handover to the access node corresponding to AN2. The access node corresponding to AN2 can include the access node of AN2 and the access node of other AN using the same RAT as AN2.

[0124] Method four:

[0125] In this example, the first message sent by the terminal device to the access node includes a measurement report.

[0126] The terminal device receives the first measurement configuration information sent by the access node, which is used to instruct the terminal device not to report the measurement information of the cell signal related to the first access network; the terminal device can perform normal measurement estimation according to the first measurement configuration information, and report a measurement report to the access node, which contains the measurement information of all cell signals required by the access node to be measured and reported by the terminal device. It can be seen that in this way, the access node excludes the measurement configuration of some cell signals when performing measurement configuration, which are related to the first access network.

[0127] In some examples, the first measurement configuration information does not contain the identification information of the cell related to the first access network.

[0128] For example, in the scenario shown in FIG. 3A / 3B, in the initial state, the terminal device accesses two access networks simultaneously, including AN1 and AN2; the access node of AN1 sends first measurement configuration information to the terminal device, which does not contain the identification information of the cell related to AN2; according to the first measurement configuration information, the measurement report reported by the terminal device does not contain the measurement information of the cell signal related to AN2, thereby avoiding the access node of AN1 switching the current access to the access node corresponding to AN2. The access node corresponding to AN2 can include the access node of AN2 and the access node of other AN using the same RAT as AN2.

[0129] In some examples, the first measurement configuration information contains an exclusion list, which contains the identification information of the cell related to the first access network.

[0130] For example, in the scenario shown in FIG. 3A / 3B, in the initial state, the terminal device accesses two access networks simultaneously, including AN1 and AN2; the access node of AN1 sends first measurement configuration information to the terminal device, the first measurement configuration information including the identification information of the cell related to AN2 and the identification information of other cells; the first configuration information also includes an exclusion list, which includes the identification information of the cell related to AN2. According to the first measurement configuration information, the terminal device does not include the measurement information of the cell signal related to AN2 in the measurement report, and only includes the measurement information of the cell signal configured by the first measurement configuration information. Thus, the access node of AN1 avoids switching the current access to the access node corresponding to AN2. The access node corresponding to AN2 can include the access node of AN2 and the access node of other ANs using the same RAT as AN2.

[0131] For example, the first measurement configuration information includes 5 cell information, such as the identification of 5 cells, including Cell 1, Cell 2, Cell 3, Cell 4 and Cell 5; the first measurement configuration information also includes an exclusion list, which includes the identification information of the cell related to AN2, such as Cell 1 and Cell 2. Then, the terminal device can report the measurement information of Cell 3, Cell 4 and Cell 5 to the access node according to the first measurement configuration information, so that the access node can only select the target access node from the access nodes of Cell 3, Cell 4 and Cell 5, excluding the access nodes of Cell 1 and Cell 2.

[0132] Alternatively, the first measurement configuration information can include a reporting list, which includes the identification information of the cell not related to the first access network. For example, the first measurement configuration information includes 5 cell information, such as the identification of 5 cells, including Cell 1, Cell 2, Cell 3, Cell 4 and Cell 5; the first measurement configuration information also includes a reporting list, which includes the identification information of the cell not related to AN2, such as Cell 3, Cell 4 and Cell 5. Then, the terminal device can report the measurement information of Cell 3, Cell 4 and Cell 5 to the access node according to the first measurement configuration information, so that the access node can only select the target access node from the access nodes of Cell 3, Cell 4 and Cell 5, excluding the access nodes of Cell 1 and Cell 2.

[0133] The premise of the scheme is: the access node knows that the terminal device is in multi-access service, and knows other access networks (i.e. another associated access network) currently accessed by the terminal device. In order to make the access node know the foregoing, the terminal device can send first indication information to the access node before receiving the first measurement configuration information sent by the access node, the first indication information being used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node; or, the first indication information can be sent by the network device to the access node before the terminal device receives the first measurement configuration information sent by the access node, the first indication information being used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node. The network device can include a core network device, such as an Access and Mobility Management Function (AMF) or a Mobility Management Entity (MME).

[0134] The first indication information can contain at least one of the following:

[0135] An indication that the terminal device is in multi-access service;

[0136] An identity of the RAT used by the first access network;

[0137] An identity of the first access node corresponding to the first access network;

[0138] An identity of a cell of the first access node corresponding to the first access network;

[0139] An identity of an access node corresponding to another access network using the same RAT as the first access network;

[0140] An identity of a cell of the access node corresponding to another access network using the same RAT as the first access network.

[0141] Before the terminal device sends the first indication information, the terminal device can also receive second measurement configuration information sent by the access node, the second measurement configuration information containing identity information of a cell related to the first access network.

[0142] In an example, taking the scenario shown in FIG. 3A / 3B as an example, in an initial state, the terminal device accesses two access networks simultaneously, including AN1 and AN2; the access node of AN1 sends second measurement configuration information to the terminal device, the second measurement configuration information containing the identification information of the cell of AN2 and the identification information of other cells; for example, the second measurement configuration information contains 5 cell information, such as the identification of 5 cells, including Cell 1, Cell 2, Cell 3, Cell 4 and Cell 5, and the terminal device is required to report the measurement information of the 5 cells.

[0143] The terminal device sends first indication information to the access node, the first indication information containing the identification of the cell of AN2, such as containing Cell 1 and Cell 2. Or, the first indication information contains an indication that the terminal device is in multi-access service, and the access node can query the identification of the cell of another associated access network (i.e. the first access network), i.e. Cell 1 and Cell 2. The access node of AN1 re-sends first measurement configuration information to the terminal device according to the first indication information, the first measurement configuration information excluding the identification information of the cell of AN2, i.e. excluding Cell 1 and Cell 2, and containing only Cell 3, Cell 4 and Cell 5. The terminal device can report the measurement information of Cell 3, Cell 4 and Cell 5 to the access node according to the first measurement configuration information, so that the access node can only select the target access node among the access nodes of Cell 3, Cell 4 and Cell 5, excluding the access nodes of Cell 1 and Cell 2.

[0144] In an example, taking the scenario shown in FIG. 3A / 3B as an example, in an initial state, the terminal device simultaneously accesses two access networks, including AN1 and AN2; the core network device of AN1 sends first indication information to the access node of AN1, and the first indication information is used to instruct the access node of AN1 to exclude the access nodes corresponding to AN2 when determining the target access node. The first indication information can include the identities of the cells related to AN2, such as Cell 1 and Cell 2. Alternatively, the first indication information can include an indication that the terminal device is in a multi-access service, and the access node of AN1 can query the cell identities related to another associated access network (i.e., the first access network), i.e., Cell 1 and Cell 2. According to the first indication information, the access node of AN1 sends first measurement configuration information to the terminal device, and the first measurement configuration information excludes the identity information of the cells related to AN2, i.e., excludes Cell 1 and Cell 2, such as Cell 3, Cell 4 and Cell 5. According to the first measurement configuration information, the terminal device can report the measurement information of Cell 3, Cell 4 and Cell 5 to the access node, so that the access node can only select the target access node from among the access nodes of Cell 3, Cell 4 and Cell 5, and exclude the access nodes of Cell 1 and Cell 2.

[0145] The application embodiment further provides a handover method. FIG. 6 is a schematic flowchart of a handover method 600 according to an application embodiment. The method can be applied to any system shown in FIGS. 1 to 4, but is not limited thereto. The method includes at least part of the following contents.

[0146] S610, the access node receives the first message sent by the terminal device.

[0147] S620, the access node excludes the first access node corresponding to the first access network when determining the target access node according to the first message.

[0148] In some embodiments, the terminal device can be a multi-access node including a plurality of terminal devices, or a terminal device including a plurality of SIM cards or network cards, or a single terminal device.

[0149] In some embodiments, the terminal device is in a multi-access service, and the multi-access service includes that the terminal device simultaneously accesses at least two access networks. In the above process, the access node does not belong to the first access network.

[0150] In some embodiments, the access node receives the first message sent by the terminal device, including: the access node receives a measurement report sent by the terminal device, wherein the measurement report excludes measurement information of a cell signal related to the first access network. In this example, the first message is the measurement report.

[0151] In some embodiments, the access node receives the first message sent by the terminal device, including: the access node receives a measurement report sent by the terminal device, wherein the measurement report includes measurement information of a cell signal related to the first access network, and the measurement report also carries first indication information, which is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node. In this example, the first message is the measurement report.

[0152] In some embodiments, the first indication information includes a plurality of marking information, each of which is used to mark the measurement information of a cell signal related to the first access network.

[0153] In some embodiments, the access node receives the first message sent by the terminal device, including: the access node receives a measurement report sent by the terminal device, wherein the measurement report includes measurement information of a cell signal related to the first access network; the access node receives first indication information sent by the terminal device, which is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node. In this example, the first message includes the measurement report and the first indication information. In this example, the first message received by the access node includes the measurement report and the first indication information.

[0154] In some embodiments, before the access node receives the measurement report sent by the terminal device, it further includes:

[0155] The access node sends first measurement configuration information to the terminal device, which is used to instruct the terminal device not to report measurement information of a cell signal related to the first access network.

[0156] In some embodiments, the first measurement configuration information does not include identification information of a cell related to the first access network.

[0157] In some embodiments, the first measurement configuration information includes an exclusion list, which includes identification information of a cell related to the first access network.

[0158] In some embodiments, before the access node sends the first measurement configuration information to the terminal device, it further includes:

[0159] The access node sends second measurement configuration information to the terminal device, which includes identification information of a cell related to the first access network.

[0160] The access node receives first indication information sent by the terminal device, the first indication information being used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

[0161] In some embodiments, before the access node sends the first measurement configuration information to the terminal device, the method further includes:

[0162] The access node receives first indication information sent by the first network element, the first indication information being used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

[0163] In some embodiments, the first indication information contains at least one of the following:

[0164] An indication that the terminal device is in multi-access service;

[0165] An identity of a RAT used by the first access network;

[0166] An identity of the first access node of the first access network;

[0167] An identity of a cell of the first access node of the first access network;

[0168] An identity of an access node of another access network using the same RAT as the first access network;

[0169] An identity of a cell of an access node of another access network using the same RAT as the first access network.

[0170] Specific examples of the access node performing the method 600 of the present embodiment can be found in the above description of the method 500 with respect to the access node, and for brevity, will not be described here again.

[0171] The application also proposes a handover method, and FIG. 7 is a schematic flowchart of a handover method 700 according to an embodiment of the application. The method can be applied to any of the systems shown in FIGS. 1 to 4, but is not limited thereto. The method includes at least part of the following content.

[0172] S710. The first network element sends first indication information to the access node, the first indication information being used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

[0173] The first network element can include a core network element, such as an Access and Mobility Management Function (AMF) or a Mobility Management Entity (MME).

[0174] In some embodiments, the access node does not belong to the first access network.

[0175] In some embodiments, the first indication information includes at least one of the following:

[0176] An indication that the terminal device is in a multi-access service;

[0177] An identity of a RAT used by the first access network;

[0178] An identity of an access node of the first access network;

[0179] An identity of a cell of the access node of the first access network;

[0180] An identity of an access node of another access network that uses the same RAT as the first access network;

[0181] An identity of a cell of the access node of the other access network that uses the same RAT as the first access network.

[0182] Specific examples of the access node performing the method 700 of the present embodiment can be found in the above description of the method 500 with respect to the first network element, and will not be described again here for brevity.

[0183] The embodiments will be described in detail below with reference to the accompanying drawings.

[0184] Embodiment One

[0185] In the present embodiment, the terminal device (such as a UE) is configured to report only measurement information that is not related to another access. The UE first accesses and registers with two accesses, and after determining to activate a multi-access service, when receiving measurement configuration information from an access node and performing measurement, the UE excludes cell information related to another access network and then reports, thereby ensuring that the UE does not switch to an AN that is the same as another access.

[0186] Taking the scenario shown in FIGS. 3A / 3B as an example, the UE accesses both AN1 and AN2. After determining to activate a multi-access service of the UE, when receiving measurement configuration information sent by an access node of AN1, the UE excludes cell information related to AN2 and then reports, thereby ensuring that the access node of AN1 does not switch to an AN that is the same as another access (i.e., the access of the UE to AN2) when selecting a target access node.

[0187] Figure 8 is a flow chart according to the first embodiment of the present application. As shown in Figure 8, the specific implementation process of this embodiment is as follows:

[0188] S800, the device (such as UE) accesses two ANs respectively through the registration process of multi-access.

[0189] Among them, the UE can send the indication information of multi-access service to the core network, which is used to inform the core network that the UE has multi-access capability; the core network can send the indication information of multi-access service to the UE, which is used to inform the UE that the UE has multi-access capability. The above-mentioned indication information of multi-access service can implicitly indicate the activation or start of use of multi-access service.

[0190] Or, other information can also be used to explicitly indicate the activation or start of use of multi-access service. For example, the UE sends an activation request of multi-access service to the core network, and the core network sends an activation response of multi-access service to the UE. The activation request and / or the activation response are used to explicitly indicate the activation or start of use of multi-access service.

[0191] S801, the access node of AN1 sends measurement configuration information to the UE, which contains a plurality of cell information that needs to be measured and reported by the UE, for example, contains the Cell information related to AN2 / RAT2, that is, the UE needs to measure and report the Cell information related to AN2 / RAT2.

[0192] S802, the UE measures according to the measurement configuration information sent by the access node of AN1, which can stop measuring the Cell signal related to AN2 / RAT2 according to the current Cell information of AN2 / RAT2, or can not be improved, and still measure normally according to the measurement configuration information sent by the access node of AN1.

[0193] S803, the UE sends a measurement report (Measurement Report) to the access node of AN1, which excludes the measurement information of the Cell related to AN2 / RAT2.

[0194] S804, the access node of AN1 determines the target AN (Target AN) according to the Measurement Report reported by the UE, and since it does not contain the measurement information of AN2 / RAT2, it will not select the Cell / AN corresponding to AN2 / RAT2 as the Target AN. For example, according to the measurement report reported by the UE, the access node of AN1 selects the access node of the cell with the best measurement result as the target access node.

[0195] S805, subsequent handover process.

[0196] Through the embodiment, based on the UE side implementation, the UE can report the measurement information of the associated AN / RAT, thereby avoiding the problem of multi-access failure caused by switching two accesses to the same access network.

[0197] Embodiment two:

[0198] In the embodiment, the UE indicates the related Cell / AN information of another access. The UE reports the related Cell / AN information of another access to the current AN before switching, which can be reported through an independent signaling stream or by adding the information of another related Cell / AN in the reported measurement report. After receiving the information of the related access, the current AN avoids selecting the same Target AN as the another access.

[0199] For example, in the scenario shown in FIG. 3A / 3B, the UE accesses AN1 and AN2 simultaneously. The UE reports the related Cell / AN information of another access (such as the ID of the access node of AN2 or the cell ID) to the access node of AN1 before switching. After receiving the information of the related access, the AN1 avoids selecting the same Target AN as the another access (i.e., the access of the UE to AN2).

[0200] FIG. 9 is a flowchart of the implementation according to embodiment two of the present application. As shown in FIG. 9, the specific implementation process of the embodiment is as follows:

[0201] S900, the device (such as UE) accesses two ANs through the registration process of multi-access respectively.

[0202] The UE can send the indication information of the multi-access service to the core network, and the indication information is used to inform the core network that the UE has multi-access capability; the core network can send the indication information of the multi-access service to the UE, and the indication information is used to inform the UE that the UE has multi-access capability. The above-mentioned indication information of the multi-access service can implicitly indicate that the multi-access service is activated or starts to be used.

[0203] Alternatively, other information can also be used to explicitly indicate that the multi-access service is activated or starts to be used. For example, the UE sends an activation request of the multi-access service to the core network, and the core network sends an activation response of the multi-access service to the UE. The activation request and / or the activation response are used to explicitly indicate that the multi-access service is activated or starts to be used.

[0204] S901, the access node of AN1 sends the measurement configuration information to the UE, which contains a plurality of cell information that needs to be measured and reported by the UE, for example, contains the Cell information related to AN2 / RAT2, that is, the UE needs to measure and report the Cell information related to AN2 / RAT2.

[0205] S902, the UE performs measurement according to the measurement configuration information sent by the access node of AN1.

[0206] S903a, the UE sends a measurement report (Measurement Report) to the access node of AN1, which contains measurement information of the Cell associated with AN2 / RAT2, and also contains indication information corresponding to AN2 / RAT2. Specifically, the indication information can be in the form of an indicator, which marks the corresponding measurement information and indicates that the measurement information is related to another access (such as the access of the UE to AN2). The measurement report can also separately carry the ID information of the access node of AN2 / RAT2 (or the associated Cell) or the ID information of the related cell, etc., for indicating the associated measurement information.

[0207] The above S903a is a reporting mode.

[0208] Another mode can include: the UE sends a measurement report (Measurement Report) to the access node of AN1, which contains measurement information of the Cell associated with AN2 / RAT2; the UE also sends another message to the access node of AN1, which carries the ID information of the access node of AN2 / RAT2 (or the associated Cell) or the ID information of the related cell, etc., for indicating the associated measurement information. Such as step S903b.

[0209] S903b, the UE sends a message to the access node of AN1, which can be in the form of UE assistance information (UE Assistance Information) or other forms. The message carries the ID information of the access node of AN2 / RAT2 (or the associated Cell) or the ID information of the related cell, etc.

[0210] S904, the access node of AN1 determines the target AN according to the information reported by the UE. Since the associated AN2 / RAT2 information is known through 3a or 3b, the Cell / AN corresponding to AN2 / RAT2 will not be selected as the target AN. For example, according to the measurement report reported by the UE, the access node of AN1 selects the access node of the cell with the best measurement result as the target access node.

[0211] S905, subsequent handover process.

[0212] Through the embodiment, based on the interaction between the UE and the AN, the current AN can know the information of the associated AN / RAT, thereby avoiding switching the two accesses to the same access network due to handover, and avoiding the problem of multi-access failure.

[0213] Embodiment Three

[0214] In this embodiment, the UE reports the association information, and the AN updates the measurement configuration information. The UE reports the AN2 / RAT2 related Cell information to the AN, and the AN determines / updates the measurement configuration information according to the received information.

[0215] For example, in the scenario shown in FIG. 3A / 3B, the UE accesses both AN1 and AN2. After determining to activate the multi-access service of the UE, the UE reports the association information to the access node of AN1, i.e., reports the currently accessed AN of the UE; the access node of AN1 determines the measurement configuration information according to the received association information, and the measurement configuration information excludes the cell information of AN2 / RAT2.

[0216] FIG. 10 is a flowchart of the implementation according to Embodiment Three of the present application. As shown in FIG. 10, the specific implementation process of this embodiment is as follows:

[0217] S1000, the device (e.g., UE) accesses two ANs through the multi-access registration process respectively.

[0218] The UE can send the indication information of the multi-access service to the core network, and the indication information is used to inform the core network that the UE has the multi-access capability; the core network can send the indication information of the multi-access service to the UE, and the indication information is used to inform the UE that the UE has the multi-access capability. The above indication information of the multi-access service can implicitly indicate the activation or start of use of the multi-access service.

[0219] Alternatively, other information can also be used to explicitly indicate the activation or start of use of the multi-access service. For example, the UE sends the activation request of the multi-access service to the core network, and the core network sends the activation response of the multi-access service to the UE. The activation request and / or the activation response are used to explicitly indicate the activation or start of use of the multi-access service.

[0220] S1001, the access node of AN1 sends the measurement configuration information to the UE, which contains the AN2 / RAT2 related Cell information, i.e., the UE needs to measure and report the AN2 / RAT2 related Cell information. This step is optional. Before the access node of AN1 sends the measurement configuration information to the UE, the UE can have sent the information in step S1002 to the access node of AN1, and then this step will not occur.

[0221] S1002, the UE sends a message to the access node of AN1, which can be in the form of UE Assistance Information or other forms. The message carries the ID information of the access node of AN2 / RAT2 (or the associated Cell) or the ID information of the related cell, etc.

[0222] S1003, the access node of AN1 sends measurement configuration information to the UE, wherein the AN2 / RAT2 related Cell information is excluded, i.e. the UE does not need to measure and report the AN2 / RAT2 related Cell information. Specifically, the measurement configuration information can not contain the AN2 / RAT2 related Cell information; or the measurement configuration information can contain the AN2 / RAT2 related Cell information, and the AN2 / RAT2 related Cell information is contained in the exclusion list, i.e. the UE is prohibited to measure and report the AN2 / RAT2 related Cell information.

[0223] S1004, the UE measures according to the measurement configuration information sent by the access node of AN1.

[0224] S1005, the UE sends a measurement report (Measurement Report) to AN1, wherein the measurement information of the AN2 / RAT2 related Cell is not contained.

[0225] S1006, the access node of AN1 determines the target AN according to the Measurement Report reported by the UE. Since the measurement information of the AN2 / RAT2 related Cell is not contained in the measurement report, the Cell / AN corresponding to AN2 / RAT2 will not be selected as the target AN. For example, according to the measurement report reported by the UE, the access node of AN1 selects the access node of the cell with the best measurement result as the target access node.

[0226] S1007, subsequent handover process.

[0227] This scheme mainly reports the association information by the UE, and the AN issues / updates the measurement configuration information according to the association information, thereby avoiding the UE to report the measurement information of the associated RAT / AN, and avoiding the multiple access fallback caused by handover.

[0228] Embodiment Four:

[0229] In this embodiment, the core network configures the restriction area and RAT of the UE, and excludes the Cell area related to another RAT. The core network configures the context information of the UE for the current AN, and simultaneously configures the Cell / gNB related to another access network as the restriction area, or another RAT as the restriction RAT. The current AN issues the measurement configuration information of the UE according to the restriction information configured by the core network, and additionally configures the Cell information related to another RAT as the prohibited information, thereby avoiding the UE to report the measurement information related to another RAT, and thereby avoiding the handover to the same Cell / AN.

[0230] For example, in the scenario shown in FIG. 3A / 3B, the UE accesses both AN1 and AN2. The core network of AN1 configures the access node of AN1 with restriction information, configures the Cell / gNB related to AN2 as a restricted area, or configures RAT2 used by AN2 as a restricted RAT. The access node of AN1 sends the UE measurement configuration information according to the restriction information, and the measurement configuration information includes the Cell information related to AN2 / RAT as prohibited information, so as to avoid the UE reporting the measurement information related to AN2 / RAT2 and switching to the access node related to AN2 / RAT2.

[0231] FIG. 11 is a flowchart of an implementation according to Embodiment Four of the present application. As shown in FIG. 11, the specific implementation process of this embodiment is as follows:

[0232] S1100, the device (such as UE) accesses two ANs respectively through a multi-access registration process.

[0233] The UE can send indication information of multi-access service to the core network, which is used to inform the core network that the UE has multi-access capability; the core network can send indication information of multi-access service to the UE, which is used to inform the UE that the UE has multi-access capability. The above-mentioned indication information of multi-access service can implicitly indicate that the multi-access service is activated or starts to be used.

[0234] Alternatively, other information can also be used to explicitly indicate that the multi-access service is activated or starts to be used. For example, the UE sends an activation request of multi-access service to the core network, and the core network sends an activation response of multi-access service to the UE. The activation request and / or the activation response are used to explicitly indicate that the multi-access service is activated or starts to be used.

[0235] S1101, the network element (such as AMF / MME, etc.) of the core network 1 configures the access node of AN1 with mobility control information (may also be other messages, here taking the mobility control message as an example), which contains information related to AN2 / RAT2.

[0236] S1002, the access node of AN1 generates measurement configuration information according to the information sent by the core network, which can include AN2 / RAT2 related Cells as an exclusion list, or when configuring an optional measurement list, does not include AN2 / RAT2 related Cells.

[0237] S1103, the access node of AN1 sends the UE measurement configuration information, which does not include AN2 / RAT2 related Cell information, or includes AN2 / RAT2 related Cell information in the exclusion list, i.e. prohibits the UE from measuring and reporting AN2 / RAT2 related Cell information.

[0238] S1104, the UE performs measurement according to the measurement configuration information sent by the access node of AN1.

[0239] S1105, the UE sends a Measurement Report to AN1, wherein the Measurement Report does not contain measurement information of the Cell of AN2 / RAT2.

[0240] S1106, the access node of AN1 determines a target AN according to the Measurement Report reported by the UE, and since the Measurement Report does not contain measurement information of AN2 / RAT2, the access node of AN2 / RAT2 will not be selected as the target AN. For example, according to the Measurement Report reported by the UE, the access node of AN1 selects the access node of the cell with the best measurement result as the target access node.

[0241] S1107, subsequent handover process.

[0242] The present scheme mainly configures the AN through the core network, informs the association information of AN2 / RAT2, and then the AN can exclude the Cell related to AN2 / RAT2 when generating the measurement configuration information.

[0243] Embodiments of the present application also provide a terminal device. FIG. 12 is a schematic block diagram of a terminal device 1200 according to an embodiment of the present application. The terminal device 1200 can include:

[0244] A first transceiver module 1210 is configured to send a first message to an access node, wherein the first message is used by the access node to exclude a first access node corresponding to a first access network when determining a target access node.

[0245] In some embodiments, the first transceiver module 1210 is further configured to perform at least one of the following:

[0246] send indication information of the multi-access service to the core network;

[0247] receive indication information of the multi-access service sent by the core network;

[0248] send an activation request of the multi-access service to the core network;

[0249] receive an activation response of the multi-access service from the core network.

[0250] In some embodiments, the multi-access service includes that the terminal device simultaneously accesses at least two access networks.

[0251] The access node does not belong to the first access network.

[0252] In some embodiments, the first transceiver 1210 is configured to send a measurement report to the access node, the measurement report excluding measurement information of a cell signal associated with the first access network.

[0253] In some embodiments, the first transceiver 1210 is configured to send a measurement report to the access node, the measurement report including measurement information of a cell signal associated with the first access network, the measurement report further carrying first indication information, the first indication information indicating that the access node excludes a first access node corresponding to the first access network when determining a target access node.

[0254] In some embodiments, the first indication information includes a plurality of marking information, each marking information being used to mark measurement information of a cell signal associated with the first access network.

[0255] In some embodiments, the first transceiver 1210 is configured to send a measurement report to the access node, the measurement report including measurement information of a cell signal associated with the first access network; and the access node sends first indication information, the first indication information indicating that the access node excludes a first access node corresponding to the first access network when determining a target access node.

[0256] In some embodiments, the first transceiver 1210 is further configured to receive first measurement configuration information sent by the access node, the first measurement configuration information indicating that the terminal device does not report measurement information of a cell signal associated with the first access network.

[0257] In some embodiments, the first measurement configuration information does not include identification information of a cell associated with the first access network.

[0258] In some embodiments, the first measurement configuration information includes an exclusion list, the exclusion list including identification information of a cell associated with the first access network.

[0259] In some embodiments, the first transceiver 1210 is further configured to send first indication information to the access node, the first indication information indicating that the access node excludes a first access node corresponding to the first access network when determining a target access node.

[0260] In some embodiments, the first transceiver 1210 is further configured to receive second measurement configuration information sent by the access node, the second measurement configuration information including identification information of a cell associated with the first access network.

[0261] In some embodiments, the first indication information includes at least one of:

[0262] An indication that the terminal device is in multi-access service;

[0263] an identity of a RAT used by the first access network;

[0264] an identity of a first access node corresponding to the first access network;

[0265] an identity of a cell of the first access node corresponding to the first access network;

[0266] an identity of an access node corresponding to another access network using the same RAT as the first access network;

[0267] an identity of a cell of the access node corresponding to the another access network using the same RAT as the first access network.

[0268] The terminal device 1200 of the embodiment of the present application can realize the corresponding functions of the terminal device in the foregoing method embodiments. The processes, functions, implementation manners, and beneficial effects of the various modules (sub-modules, units, or components, etc.) in the terminal device 1200 can be referred to the corresponding descriptions in the foregoing method embodiments, which will not be described here. It should be noted that the functions described with respect to the various modules (sub-modules, units, or components, etc.) in the terminal device 1200 of the embodiment of the present application can be realized by different modules (sub-modules, units, or components, etc.), or can be realized by the same module (sub-module, unit, or component, etc.).

[0269] The embodiment of the present application also proposes an access node. FIG. 13 is a schematic block diagram of an access node 1300 according to an embodiment of the present application. The access node 1300 can include:

[0270] a second transceiver module 1310 configured to receive a first message sent by a terminal device;

[0271] a first processing module 1320 configured to exclude a first access node corresponding to the first access network when determining a target access node according to the first message.

[0272] In some embodiments, the access node does not belong to the first access network.

[0273] In some embodiments, the second transceiver module 1310 is configured to receive a measurement report sent by the terminal device, and the measurement report excludes measurement information of a cell signal related to the first access network.

[0274] In some embodiments, the second transceiver module 1310 is configured to receive a measurement report sent by the terminal device, and the measurement report includes measurement information of a cell signal related to the first access network. The measurement report also carries first indication information, and the first indication information is used to indicate that the access node excludes a first access node corresponding to the first access network when determining a target access node.

[0275] In some embodiments, the first indication information comprises a plurality of marking information, each of which is used for marking measurement information of a cell signal related to the first access network.

[0276] In some embodiments, the second transceiver 1310 is further configured to receive a measurement report sent by the terminal device, the measurement report comprising measurement information of a cell signal related to the first access network; and receive first indication information sent by the terminal device, the first indication information being used for indicating that the access node excludes a first access node corresponding to the first access network when determining a target access node.

[0277] In some embodiments, the second transceiver 1310 is further configured to send first measurement configuration information to the terminal device, the first measurement configuration information being used for instructing the terminal device not to report measurement information of a cell signal related to the first access network.

[0278] In some embodiments, the first measurement configuration information does not comprise identification information of a cell related to the first access network.

[0279] In some embodiments, the first measurement configuration information comprises an exclusion list, the exclusion list comprising identification information of a cell related to the first access network.

[0280] In some embodiments, the second transceiver 1310 is further configured to send second measurement configuration information to the terminal device, the second measurement configuration information comprising identification information of a cell related to the first access network; and receive first indication information sent by the terminal device, the first indication information being used for indicating that the access node excludes a first access node corresponding to the first access network when determining a target access node.

[0281] In some embodiments, the second transceiver 1310 is further configured to receive first indication information sent by a first network element, the first indication information being used for indicating that the access node excludes a first access node corresponding to the first access network when determining a target access node.

[0282] In some embodiments, the first indication information comprises at least one of:

[0283] an indication that the terminal device is in multi-access service;

[0284] identification of a RAT used by the first access network;

[0285] identification of an access node of the first access network;

[0286] identification of a cell of an access node of the first access network;

[0287] identification of an access node of another access network using the same RAT as the first access network;

[0288] an identity of a cell of an access node of another access network using a same RAT as the first access network.

[0289] The access node 1300 of the embodiments of the present application can realize the corresponding functions of the access node in the foregoing method embodiments. The corresponding processes, functions, implementation manners and beneficial effects of each module (sub-module, unit or component, etc.) in the access node 1300 can be referred to the corresponding description in the foregoing method embodiments, which will not be described here. It should be noted that the functions described with respect to each module (sub-module, unit or component, etc.) in the access node 1300 of the embodiments of the present application can be realized by different modules (sub-modules, units or components, etc.), or can be realized by the same module (sub-module, unit or component, etc.).

[0290] The embodiments of the present application also propose a first network element. FIG. 14 is a schematic block diagram of a first network element 1400 according to an embodiment of the present application. The first network element 1400 can include:

[0291] a third transceiver module 1410 configured to send first indication information to the access node, the first indication information being used to instruct the access node to exclude a first access node corresponding to a first access network when determining a target access node.

[0292] In some embodiments, the access node does not belong to the first access network.

[0293] In some embodiments, the first indication information includes at least one of the following:

[0294] an indication that the terminal device is in multi-access service;

[0295] an identity of a RAT used by the first access network;

[0296] an identity of an access node of the first access network;

[0297] an identity of a cell of an access node of the first access network;

[0298] an identity of an access node of another access network using a same RAT as the first access network;

[0299] an identity of a cell of an access node of another access network using a same RAT as the first access network.

[0300] The first network element 1400 of the embodiments of the present application can realize the corresponding functions of the first network element in the method embodiments. The processes, functions, implementation manners and beneficial effects of each module (sub-module, unit or component, etc.) in the first network element can be referred to the corresponding description in the method embodiments, which will not be repeated here. It should be noted that the functions described with respect to each module (sub-module, unit or component, etc.) in the first network element 1400 of the embodiments of the present application can be realized by different modules (sub-modules, units or components, etc.), or by the same module (sub-module, unit or component, etc.).

[0301] FIG. 15 is a schematic structural diagram of a communication device 1500 according to the embodiments of the present application. The communication device 1500 includes a processor 1510. The processor 1510 can invoke and run a computer program from a memory to enable the communication device 1500 to implement the methods in the embodiments of the present application.

[0302] In an implementation manner, the communication device 1500 can further include a memory 1520. The processor 1510 can invoke and run a computer program from the memory 1520 to enable the communication device 1500 to implement the methods in the embodiments of the present application.

[0303] The memory 1520 can be a separate device independent of the processor 1510, or can be integrated in the processor 1510.

[0304] In an implementation manner, the communication device 1500 can further include a transceiver 1530. The processor 1510 can control the transceiver 1530 to communicate with other devices. Specifically, the transceiver 1530 can send information or data to other devices, or receive information or data sent by other devices.

[0305] The transceiver 1530 can include a transmitter and a receiver. The transceiver 1530 can further include an antenna, and the number of antennas can be one or more.

[0306] In an implementation manner, the communication device 1500 can be the access node and the first network element of the embodiments of the present application, and the communication device 1500 can realize the corresponding processes in the methods of the embodiments of the present application realized by the network device. For brevity, details are not repeated here.

[0307] In an implementation manner, the communication device 1500 can be the terminal device of the embodiments of the present application, and the communication device 1500 can realize the corresponding processes in the methods of the embodiments of the present application realized by the terminal device. For brevity, details are not repeated here.

[0308] FIG. 16 is a schematic structural diagram of a chip 1600 according to an embodiment of the present application. The chip 1600 includes a processor 1610, which can invoke and run a computer program from a memory to implement the method in the embodiments of the present application.

[0309] In an embodiment, the chip 1600 can further include a memory 1620. The processor 1610 can invoke and run a computer program from the memory 1620 to implement the method performed by the terminal device or the network device in the embodiments of the present application.

[0310] The memory 1620 can be a separate device independent of the processor 1610, or can be integrated in the processor 1610.

[0311] In an embodiment, the chip 1600 can further include an input interface 1630. The processor 1610 can control the input interface 1630 to communicate with other devices or chips, and specifically, can acquire information or data sent by other devices or chips.

[0312] In an embodiment, the chip 1600 can further include an output interface 1640. The processor 1610 can control the output interface 1640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

[0313] In an embodiment, the chip can be applied to the access node and the first network element in the embodiments of the present application, and the chip can implement the corresponding procedures in the methods of the embodiments of the present application performed by the access node and the first network element. For brevity, details are not described herein.

[0314] In an embodiment, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding procedures in the methods of the embodiments of the present application performed by the terminal device. For brevity, details are not described herein.

[0315] The chip applied to the network device and the terminal device can be the same chip or different chips.

[0316] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system-on-chip, a system chip, a chip system or a system-on-chip, etc.

[0317] The aforementioned processor can be a general processor, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC) or other programmable logic device, a transistor logic device, a discrete hardware component, etc. Among them, the aforementioned general processor can be a microprocessor or any conventional processor, etc.

[0318] The aforementioned memory can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable ROM (PROM), an erasable PROM (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM).

[0319] It should be understood that the aforementioned memory is an exemplary but not a limiting description, for example, the memory in the embodiments of the present application can also be a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM) and a direct memory bus RAM (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable type of memory.

[0320] In the above embodiments, the processes can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the processes can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed by a computer, the computer instructions generate the processes or functions in the embodiments of the present application in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. containing one or more available media sets. The available medium can be a magnetic medium (for example, floppy disk, hard disk, magnetic tape), an optical medium (for example, DVD), or a semiconductor medium (for example, solid state disk (SSD)), etc.

[0321] It should be understood that the size of the sequence number of each process described above in various embodiments of the present application does not mean the order of execution, and the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0322] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0323] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A handover method, comprising: a terminal device sending a first message to an access node, the first message being used for the access node to exclude a first access node corresponding to a first access network when determining a target access node.

2. The method of claim 1, wherein, Before the terminal device sends the first message to the access node, the method further comprises at least one of: the terminal device sending indication information of a multi-access service to a core network; the terminal device receiving indication information of a multi-access service sent by the core network; the terminal device sending an activation request of a multi-access service to the core network; the terminal device receiving an activation response of a multi-access service from the core network. 3.The method of claim 2, wherein: the multi-access service comprises the terminal device accessing at least two access networks simultaneously; the access node does not belong to the first access network.

4. The method of any one of claims 1-3, wherein, The terminal device sending the first message to the access node comprises: the terminal device sending a measurement report to the access node, the measurement report excluding measurement information of a cell signal related to the first access network.

5. The method of any one of claims 1-3, wherein, The terminal device sending the first message to the access node comprises: the terminal device sending a measurement report to the access node, the measurement report containing measurement information of a cell signal related to the first access network, and the measurement report further carrying first indication information, the first indication information being used to instruct the access node to exclude the first access node corresponding to the first access network when determining the target access node.

6. The method of claim 5, wherein, The first indication information comprises a plurality of marking information, each of the marking information being used to mark measurement information of a cell signal related to the first access network.

7. The method of any one of claims 1-3, wherein, The terminal device sending the first message to the access node comprises: the terminal device sending a measurement report to the access node, the measurement report containing measurement information of a cell signal related to the first access network; and the terminal device sending first indication information to the access node, the first indication information being used to instruct the access node to exclude the first access node corresponding to the first access network when determining the target access node. 8.The method of claim 4, before the terminal device sends the measurement report to the access node, the method further comprises: the terminal device receiving first measurement configuration information sent by the access node, the first measurement configuration information being used to instruct the terminal device not to report measurement information of a cell signal related to the first access network.

9. The method of claim 8, wherein, The first measurement configuration information does not contain identification information of a cell related to the first access network.

10. The method of claim 8, wherein, The first measurement configuration information contains an exclusion list, the exclusion list containing identification information of a cell related to the first access network. 11.The method of any one of claims 8-10, before the terminal device receives the first measurement configuration information sent by the access node, the method further comprises: the terminal device sending first indication information to the access node, the first indication information being used to instruct the access node to exclude the first access node corresponding to the first access network when determining the target access node.

12. The method of claim 11, wherein the terminal device further comprises, before sending the first indication information to the access node: receiving, by the terminal device, second measurement configuration information sent by the access node, wherein the second measurement configuration information comprises identification information of a cell associated with the first access network.

13. The method of claim 5, 7, 11, or 12, wherein, The first indication information comprises at least one of: an indication that the terminal device is in multi-access service; an identification of a radio access technology (RAT) used by the first access network; an identification of the first access node corresponding to the first access network; an identification of a cell of the first access node corresponding to the first access network; an identification of an access node corresponding to another access network using the same RAT as the first access network; an identification of a cell of the access node corresponding to another access network using the same RAT as the first access network.

14. A handover method, comprising: receiving, by an access node, a first message sent by a terminal device; excluding, by the access node, a first access node corresponding to a first access network when determining a target access node based on the first message.

15. The method of claim 14, wherein, The access node does not belong to the first access network.

16. The method of claim 14 or 15, wherein, receiving, by the access node, a first message sent by a terminal device, comprising: receiving, by the access node, a measurement report sent by the terminal device, wherein the measurement report excludes measurement information of a cell signal associated with the first access network.

17. The method of claim 14 or 15, wherein, receiving, by the access node, a first message sent by a terminal device, comprising: receiving, by the access node, a measurement report sent by the terminal device, wherein the measurement report comprises measurement information of a cell signal associated with the first access network, and the measurement report further carries first indication information, wherein the first indication information is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

18. The method of claim 17, wherein, The first indication information comprises a plurality of marking information, and each marking information is used to mark a measurement information of a cell signal associated with the first access network.

19. The method of claim 14 or 15, wherein, receiving, by the access node, a first message sent by a terminal device, comprising: receiving, by the access node, a measurement report sent by the terminal device, wherein the measurement report comprises measurement information of a cell signal associated with the first access network; receiving, by the access node, first indication information sent by the terminal device, wherein the first indication information is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

20. The method of claim 16, wherein the access node further comprises, before receiving the measurement report sent by the terminal device: sending, by the access node, first measurement configuration information to the terminal device, wherein the first measurement configuration information is used to instruct the terminal device not to report measurement information of a cell signal associated with the first access network.

21. The method of claim 20, wherein the first measurement configuration information does not comprise identification information of a cell associated with the first access network.

22. The method of claim 16, wherein the first measurement configuration information comprises an exclusion list, and the exclusion list comprises identification information of cells associated with the first access network.

23. The method of any of claims 20-22, wherein before the access node sends the first measurement configuration information to the terminal device, the method further comprises: the access node sending second measurement configuration information to the terminal device, the second measurement configuration information comprising identification information of cells associated with the first access network; the access node receiving first indication information from the terminal device, the first indication information indicating that the access node excludes the first access node corresponding to the first access network when determining the target access node.

24. The method of any of claims 20-22, wherein before the access node sends the first measurement configuration information to the terminal device, the method further comprises: the access node receiving first indication information from a first network element, the first indication information indicating that the access node excludes the first access node corresponding to the first access network when determining the target access node.

25. The method of claim 17, 19, 23, or 24, wherein, the first indication information comprising at least one of: an indication that the terminal device is in a multi-access service; an identification of a RAT used by the first access network; an identification of an access node of the first access network; an identification of a cell of an access node of the first access network; an identification of an access node of another access network using the same RAT as the first access network; an identification of a cell of an access node of another access network using the same RAT as the first access network.

26. A handover method, comprising: a first network element sending first indication information to an access node, the first indication information indicating that the access node excludes the first access node corresponding to the first access network when determining a target access node.

27. The method of claim 26, wherein, the access node not belonging to the first access network.

28. The method of claim 26 or 27, wherein, the first indication information comprising at least one of: an indication that a terminal device is in a multi-access service; an identification of a RAT used by the first access network; an identification of an access node of the first access network; an identification of a cell of an access node of the first access network; an identification of an access node of another access network using the same RAT as the first access network; an identification of a cell of an access node of another access network using the same RAT as the first access network.

29. A terminal device, comprising: a first transceiver module configured to send a first message to an access node, the first message indicating that the access node excludes the first access node corresponding to the first access network when determining a target access node.

30. The terminal device of claim 29, wherein, the first transceiver module is further configured to at least one of: send an indication of a multi-access service to a core network; receive an indication of a multi-access service sent by a core network; send an activation request of a multi-access service to a core network; receive an activation response of a multi-access service from a core network.

31. The terminal device of claim 30, wherein, The multi-access service comprises that the terminal device simultaneously accesses at least two access networks; The access node does not belong to the first access network.

32. The terminal device of any one of claims 29-31, wherein, The first transceiving module is configured to send a measurement report to the access node, wherein the measurement report excludes measurement information of a cell signal related to the first access network.

33. The terminal device of any one of claims 29-31, wherein, The first transceiving module is configured to send a measurement report to the access node, wherein the measurement report includes measurement information of a cell signal related to the first access network, and the measurement report further carries first indication information, wherein the first indication information is used to instruct the access node to exclude the first access node corresponding to the first access network when determining the target access node.

34. The terminal device of claim 33, wherein, The first indication information includes a plurality of marking information, and each marking information is used to mark measurement information of a cell signal related to the first access network.

35. The terminal device of any one of claims 29-31, wherein, The first transceiving module is configured to send a measurement report to the access node, wherein the measurement report includes measurement information of a cell signal related to the first access network; and the access node sends first indication information, wherein the first indication information is used to instruct the access node to exclude the first access node corresponding to the first access network when determining the target access node.

36. The terminal device of claim 32, wherein, The first transceiving module is further configured to receive first measurement configuration information sent by the access node, wherein the first measurement configuration information is used to instruct the terminal device not to report measurement information of a cell signal related to the first access network.

37. The terminal device of claim 36, wherein, The first measurement configuration information does not include identification information of a cell related to the first access network.

38. The terminal device of claim 36, wherein, The first measurement configuration information includes an exclusion list, and the exclusion list includes identification information of a cell related to the first access network.

39. The terminal device of any one of claims 36-38, wherein, The first transceiving module is further configured to send first indication information to the access node, wherein the first indication information is used to instruct the access node to exclude the first access node corresponding to the first access network when determining the target access node.

40. The terminal device of claim 39, wherein, The first transceiving module is further configured to receive second measurement configuration information sent by the access node, wherein the second measurement configuration information includes identification information of a cell related to the first access network.

41. The terminal device of any one of claims 33, 35, 39 or 40, wherein, The first indication information includes at least one of the following: An indication that the terminal device is in multi-access service; Identification of a RAT used by the first access network; Identification of a first access node corresponding to the first access network; Identification of a cell of the first access node corresponding to the first access network; Identification of an access node corresponding to another access network using the same RAT as the first access network; Identification of a cell of an access node corresponding to another access network using the same RAT as the first access network.

42. An access node, comprising: A second transceiving module configured to receive a first message sent by a terminal device; A first processing module configured to exclude a first access node corresponding to a first access network when determining a target access node according to the first message.

43. The access node of claim 42, wherein, The access node does not belong to the first access network.

44. The access node of claim 42 or 43, wherein, The second transceiver module is configured to receive a measurement report sent by the terminal device, and the measurement report excludes measurement information of a cell signal associated with the first access network.

45. The access node of claim 42 or 43, wherein, The second receiving module is configured to receive a measurement report sent by the terminal device, and the measurement report includes measurement information of a cell signal associated with the first access network, and the measurement report further carries first indication information, which is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

46. The access node of claim 45, wherein, The first indication information includes a plurality of marking information, and each marking information is used to mark measurement information of a cell signal associated with the first access network.

47. The access node of claim 42 or 43, wherein, The second transceiver module is configured to receive a measurement report sent by the terminal device, and the measurement report includes measurement information of a cell signal associated with the first access network. The first indication information is received, and the first indication information is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

48. The access node of claim 44, wherein the second transceiver module is further configured to send first measurement configuration information to the terminal device, and the first measurement configuration information is used to indicate that the terminal device does not report measurement information of a cell signal associated with the first access network.

49. The access node of claim 48, wherein the first measurement configuration information does not include identification information of a cell associated with the first access network.

50. The access node of claim 44, wherein the first measurement configuration information includes an exclusion list, and the exclusion list includes identification information of a cell associated with the first access network.

51. The access node of any one of claims 48-50, wherein the second transceiver module is further configured to send second measurement configuration information to the terminal device, and the second measurement configuration information includes identification information of a cell associated with the first access network; and receive first indication information sent by the terminal device, and the first indication information is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

52. The access node of any one of claims 48-50, wherein the second transceiver module is further configured to receive first indication information sent by a first network element, and the first indication information is used to indicate that the access node excludes the first access node corresponding to the first access network when determining the target access node.

53. The access node of any of claims 45, 47, 51, or 52, wherein, The first indication information includes at least one of the following: an indication that the terminal device is in multi-access service; identification of a RAT used by the first access network; identification of an access node of the first access network; identification of a cell of an access node of the first access network; identification of an access node of another access network using the same RAT as the first access network; identification of a cell of an access node of another access network using the same RAT as the first access network. 54.A first network element, comprising: a third transceiver configured to send first indication information to an access node, the first indication information being used to instruct the access node to exclude a first access node corresponding to a first access network when determining a target access node.

55. The first network element of claim 54, wherein, The access node does not belong to the first access network.

56. The first network element of claim 54 or 55, wherein, The first indication information comprises at least one of: an indication that a terminal device is in a multi-access service; an identity of a RAT used by the first access network; an identity of an access node of the first access network; an identity of a cell of an access node of the first access network; an identity of an access node of another access network using the same RAT as the first access network; and an identity of a cell of an access node of another access network using the same RAT as the first access network.

57. A terminal device comprising: a transceiver configured to communicate with other devices, a processor configured to invoke and run a computer program stored in a memory to cause the terminal device to perform the method of any one of claims 1 to 13.

58. A network device comprising: a transceiver configured to communicate with other devices, a processor configured to invoke and run a computer program stored in a memory to cause the network device to perform the method of any one of claims 14 to 28.

59. A chip comprising: a processor configured to invoke and run a computer program stored in a memory to cause a device in which the chip is installed to perform the method of any one of claims 1 to 28. 60.A computer readable storage medium storing a computer program which, when run by a device, causes the device to perform the method of any one of claims 1 to 28. 61.A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 28. 62.A computer program which causes a computer to perform the method of any one of claims 1 to 28.

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