Communication method, device and communication equipment

Abstract

The invention discloses a communication method and device and communication equipment, and belongs to the technical field of communication, and the communication method comprises the steps that a terminal receives first indication information sent by first core network equipment or second indication information sent by first access network equipment; wherein the first core network equipment and the first access network equipment belong to a first network, and the first indication information or the second indication information is used for indicating that the terminal enters a connection state in a second network; and the terminal enters a connection state in the second network according to the first indication information or the second indication information.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a communication method, apparatus and communication equipment. Background Art

[0002] In the related art, in order to solve the problem of poor signal quality and slow switching of user equipment (UE) at the edge of a network, a dual registration solution is proposed, that is, the UE is registered in two networks at the same time and uses the two networks for data transmission at the same time.

[0003] However, when the UE is registered in two networks at the same time (ie, the UE is in a dual registration state), it needs to monitor paging messages of the two networks at the same time, which will increase the power consumption of the UE, reduce the standby time, and cause a poor user experience. Summary of the invention

[0004] The embodiments of the present application provide a communication method, an apparatus and a communication device, which can solve the problem that when a terminal is in a dual registration state, it needs to monitor paging messages of two networks at the same time, which increases the power consumption of the UE.

[0005] In a first aspect, a communication method is provided, comprising:

[0006] The terminal receives first indication information sent by a first core network device or second indication information sent by a first access network device; wherein the first core network device and the first access network device belong to a first network, and the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network;

[0007] The terminal enters a connected state in the second network according to the first indication information or the second indication information.

[0008] In a second aspect, a communication method is provided, comprising:

[0009] The first core network device sends first indication information to the terminal or sends second indication information to the terminal through the first access network device or sends third indication information to the first access network device, wherein the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network, and the third indication information is used to indicate that the terminal is redirected or switched to the second network;

[0010] Among them, the first core network device and the first access network device belong to the first network.

[0011] In a third aspect, a communication method is provided, comprising:

[0012] The second core network device sends a third message to the first core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network;

[0013] The first core network device belongs to a first network, and the second core network device belongs to a second network.

[0014] In a fourth aspect, a communication device is provided, including:

[0015] A first receiving module, used to receive first indication information sent by a first core network device or second indication information sent by a first access network device; wherein the first core network device and the first access network device belong to a first network, and the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network;

[0016] A processing module is used to enter a connection state in the second network according to the first indication information or the second indication information.

[0017] In a fifth aspect, a communication device is provided, including:

[0018] A first sending module, used to send first indication information to the terminal or send second indication information to the terminal through the first access network device or send third indication information to the first access network device, wherein the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network, and the third indication information is used to indicate that the terminal is redirected or switched to the second network;

[0019] Among them, the first core network device and the first access network device belong to the first network.

[0020] In a sixth aspect, a communication device is provided, including:

[0021] A second sending module is used to send a third message to the first core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network;

[0022] The first core network device belongs to the first network, and the second core network device belongs to the second network.

[0023] In a seventh aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0024] In an eighth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive first indication information sent by a first core network device or second indication information sent by a first access network device; wherein the first core network device and the first access network device belong to a first network, and the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network; and the processor is used to enter a connected state in the second network according to the first indication information or the second indication information.

[0025] In the ninth aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect or the third aspect are implemented.

[0026] In a tenth aspect, a network side device is provided, comprising a processor and a communication interface, wherein the communication interface is used to send a first indication information to a terminal or send a second indication information to the terminal through a first access network device or send a third indication information to the first access network device, the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network, the third indication information is used to indicate that the terminal is redirected or switched to the second network, or is used to send a third message to the first core network device, the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network;

[0027] The first core network device belongs to the first network, and the second core network device belongs to the second network.

[0028] In the eleventh aspect, a communication system is provided, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect or the third aspect.

[0029] In the twelfth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0030] In the thirteenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0031] In the fourteenth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0032] In an embodiment of the present application, a terminal receives a first indication message sent by a first core network device or a second indication message sent by a first access network device; wherein, the first core network device and the first access network device belong to a first network, and the first indication message or the second indication message is used to indicate that the terminal enters a connected state in a second network; the terminal enters a connected state in the second network according to the first indication message or the second indication message. Through the above scheme, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor the paging in the first network, without having to monitor the paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A structural diagram showing a communication system to which the embodiments of the present application can be applied;

[0034] Figure 2 A schematic diagram showing the process of receiving paging by a terminal in a 4G network;

[0035] Figure 3 A schematic diagram showing the process of receiving paging by a terminal in a 5G network;

[0036] Figure 4 A schematic diagram showing a flow chart of a communication method according to an embodiment of the present application;

[0037] Figure 5 A second flowchart of the communication method according to an embodiment of the present application is shown;

[0038] Figure 6 One of the interactive schematic diagrams showing the communication method according to the embodiment of the present application;

[0039] Figure 7 A second interactive schematic diagram showing the communication method according to an embodiment of the present application;

[0040] Figure 8 A third interactive schematic diagram showing the communication method according to an embodiment of the present application;

[0041] Fig. 9 A fourth interactive schematic diagram showing the communication method according to an embodiment of the present application;

[0042] Fig.10 A fifth interactive diagram showing the communication method according to an embodiment of the present application;

[0043] Fig.11 A sixth interactive schematic diagram showing the communication method according to an embodiment of the present application;

[0044] Fig.12 A third flowchart of the communication method according to an embodiment of the present application is shown;

[0045] Fig.13 A seventh interactive diagram showing a communication method according to an embodiment of the present application;

[0046] Fig.14 An eighth interactive schematic diagram showing the communication method according to an embodiment of the present application;

[0047] Fig.15 One of the module schematic diagrams showing the communication device according to an embodiment of the present application;

[0048] Fig.16 A second schematic diagram showing a module of a communication device according to an embodiment of the present application;

[0049] Fig.17 A third schematic diagram showing a module of a communication device according to an embodiment of the present application;

[0050] Fig.18 A structural block diagram showing a communication device according to an embodiment of the present application;

[0051] Fig.19 A structural block diagram showing a terminal according to an embodiment of the present application;

[0052] Fig. 20 A structural block diagram showing a network side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0054] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0055] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0056] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as other systems and radio technologies. The following description describes a new radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as 6th Generation (6G) communication systems.

[0057] Figure 1A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal Computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. In addition to the above-mentioned terminal devices, it can also be a chip in the terminal, such as a modem chip, a system-on-chip (System on Chip, SoC). It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (AccessPoint, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NodeB, NB), an evolved Node B (Evolved Node B, eNB), a next generation Node B (the next generation Node B, gNB), a New Radio Node B (New Radio Node B, NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic Service Set (Basic Service Set, BSS), an Extended Service Set (Extended Service Set, ESS), a home Node B (home evolved Node B, HNB), a home evolved Node B (home evolved Node B), a Transmission Reception Point (Transmission Reception Point, TRP) or other appropriate terms in the relevant field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0058] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0059] In order to enable those skilled in the art to better understand the embodiments of the present application, the following description is first made.

[0060] (1) The process of UE receiving paging in 4G network.

[0061] like Figure 2 As shown, the process includes:

[0062] 1. The Packet Data Network Gate Way (PGW) receives the downlink data packet sent to the UE and forwards the data packet to the Serving Gate Way (SGW);

[0063] 2. SGW sends a downlink data notification message to MME;

[0064] 3. The MME sends a paging message to all base stations in the area where the UE is located;

[0065] 4. The base station pages the UE within its coverage area.

[0066] (2) The process of UE receiving paging in 5G network.

[0067] like Figure 3 As shown, the process includes:

[0068] 1. UPF receives the data packet sent to UE;

[0069] 2. UPF sends a data notification message to SMF;

[0070] 3. SMF sends a N1N2 message forwarding (Namf_Communication_N1N2MessageTransfer) message to AMF to request to send downlink data to the UE;

[0071] 4. AMF sends a paging message to all base stations in the area where the UE is located;

[0072] 5. The base station pages the UE within its coverage area.

[0073] The communication method provided in the embodiment of the present application is described in detail below through some embodiments and their application scenarios in combination with the accompanying drawings.

[0074] like Figure 4 As shown, an embodiment of the present application provides a communication method, including:

[0075] Step 401: The terminal receives first indication information sent by a first core network device or second indication information sent by a first access network device; wherein, the first core network device and the first access network device belong to a first network, and the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network.

[0076] Optionally, the first network corresponds to a first radio access technology (RAT), and the second network corresponds to a second RAT, and the first RAT and the second RAT are different, that is, the terminal is in a registered state in two different RAT networks. Optionally, the first network in the embodiment of the present application is a 5G network, and the second network is a 4G network; or, the first network is a 4G network, and the second network is a 5G network;

[0077] Of course, the first network mentioned above can also be a 6G network, and the second network can be a 5G network or a 4G network; or, the first network mentioned above can be a 4G network, and the second network can be a 5G network or a 6G network.

[0078] Assuming that the above-mentioned first network is a 5G network and the above-mentioned second network is a 4G network, the above-mentioned first core network device is AMF and the above-mentioned second core network device is MME.

[0079] Optionally, the first access network device may specifically be a base station.

[0080] Optionally, when the second core network device requests the first core network device to trigger the terminal to enter a connected state in the second network, the first core network device sends a first indication message to the terminal or sends a second indication message to the terminal through the first access network device or sends a third indication message to the first access network device.

[0081] Step 402: The terminal enters a connected state in the second network according to the first indication information or the second indication information.

[0082] Here, the terminal enters a connected state in the second network according to the first indication information or the second indication information, so as to monitor paging messages only in the second network, thereby saving power consumption of the terminal.

[0083] In an embodiment of the present application, a terminal receives a first indication message sent by a first core network device or a second indication message sent by a first access network device; wherein, the first core network device and the first access network device belong to a first network, and the first indication message or the second indication message is used to indicate that the terminal enters a connected state in a second network; the terminal enters a connected state in the second network according to the first indication message or the second indication message. Through the above scheme, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor the paging in the first network, without having to monitor the paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0084] Optionally, the first indication information includes at least one of the following:

[0085] The radio access technology RAT corresponding to the second network, such as the RAT corresponding to the second network is 4G technology; indicating through the RAT corresponding to the second network that the terminal needs to enter a connected state in the second network corresponding to the RAT;

[0086] indication information used to indicate the second network;

[0087] Dual registration indication information, where the dual registration indication information is used to indicate that the terminal is in a registered state in the first network and the second network at the same time, and when receiving the dual registration indication information sent by the first core network device, the dual registration indication information is used to indicate that the terminal needs to enter a connected state in the second network;

[0088] Dual steer indication information, which is used to indicate the simultaneous use of the first network and the second network for data transmission. When the dual steer indication information sent by the first core network device is received, the dual steer indication information implicitly indicates that the terminal needs the second network to enter a connected state.

[0089] In an embodiment of the present application, the RAT corresponding to the second network, the indication information used to indicate the second network, the dual registration indication information or the dual transmission indication information sent by the first core network device indicates that the terminal enters a connected state in the second network.

[0090] Optionally, the terminal receives first indication information sent by the first core network device, including:

[0091] The terminal receives a non-access layer message sent by a first core network device, where the non-access layer message includes the first indication information.

[0092] In one implementation of the embodiment of the present application, the first indication information is carried via a non-access stratum (NAS).

[0093] Specifically, when the second core network device requests the first core network device to trigger the terminal to enter a connected state in the second network, if the first core network device determines that the terminal is in a connected state in the first network, it sends a first indication information to the terminal through a NAS message, so that the terminal enters a connected state in the second network based on the NAS message.

[0094] Optionally, the terminal receives second indication information sent by the first access network device, including:

[0095] The terminal receives a first paging message sent by the first access network device, where the first paging message includes the second indication information.

[0096] Optionally, the second indication information includes at least one of the following:

[0097] The radio access technology RAT corresponding to the second network, such as the RAT corresponding to the second network is 4G technology;

[0098] Information used to indicate that a low-priority network triggers the first paging message, where the low-priority network is a network with a lower priority between the first network and the second network;

[0099] Dual registration indication information, the dual registration indication information is used to indicate that the terminal is in a registered state in the first network and the second network at the same time, and when the dual registration indication information sent by the first access network device is received, the dual registration indication information is used to indicate that the terminal needs to enter a connected state in the second network;

[0100] Dual transmission indication information, the dual transmission indication information is used to indicate the simultaneous use of the first network and the second network for data transmission. When the dual transmission indication information sent by the first access network device is received, the dual transmission indication information implicitly indicates that the terminal needs the second network to enter a connected state.

[0101] In an embodiment of the present application, when the second core network device requests the first core network device to trigger the terminal to enter a connected state in the second network, if the first core network device determines that the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first core network device sends a third paging message to the first access network device, and the first access network device sends the above-mentioned first paging message to the terminal based on the third paging message, so that the terminal enters a connected state in the second network based on the first paging message.

[0102] Optionally, the third paging message includes fourth indication information, and the fourth indication information is used to instruct the first access network device to send the second indication information to the terminal through the first paging message.

[0103] As an example, the fourth indication information includes at least one of the following:

[0104] The radio access technology RAT corresponding to the second network;

[0105] Information used to instruct the low priority network to trigger the first paging message;

[0106] Double transmission indication information.

[0107] It should be noted that the second indication information and the third indication information may be the same or different.

[0108] Optionally, the method of the embodiment of the present application further includes at least one of the following:

[0109] Sending a first message to the first core network device, where the first message includes first identification information or network priority information, where the first identification information is used to determine the second core network device that provides services for the terminal in the second network, and the network priority information is used to indicate a priority relationship between the first network and the second network;

[0110] A second message is sent to the second core network device, the second message includes second identification information or the network priority information, the second identification information is used to determine the first core network device that provides services to the terminal in the first network, the network priority information is used to indicate the priority relationship between the first network and the second network, and the second core network device belongs to the second network.

[0111] In an embodiment of the present application, the first indication information or the second indication information is sent according to the network priority information or the connection status of the terminal in the first network.

[0112] For example, when the terminal is in a connected state in the first network, the first core network device sends the first indication information to the terminal; or, when the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first core network device sends the first indication information to the terminal, or sends the second indication information to the terminal through the first access network device.

[0113] In addition, the terminal sends the first identification information to the first core network device, so that the first core network device can determine the second core network device providing services for the terminal based on the first identification information, thereby facilitating subsequent interaction with the second core network device.

[0114] The terminal sends the second identification information to the second core network device, so that the second core network device can determine the first core network device providing services for the terminal based on the second identification information, thereby facilitating subsequent interaction with the first core network device.

[0115] As an optional implementation manner, the first identification information includes a globally unique temporary terminal identifier, or a globally unique second core network device identifier;

[0116] Alternatively, the second identification information includes a globally unique temporary terminal identifier, or a globally unique first core network device identifier.

[0117] For example, when the first network is a 5G network and the second network is a 4G network, the first identification information includes a 4G globally unique temporary UE identity (Globally Unique Temporary UE Identity, GUTI) or a 4G globally unique MME identity (Globally Unique MME Identity, GUMMEI); the second identification information includes a 5GGUTI or a 5G globally unique AMF identity (Globally Unique AMF Identity, GUAMI).

[0118] As an implementation method, the method of the embodiment of the present application further includes:

[0119] Receive network priority information sent by the first core network device or the second core network device, where the network priority information is used to indicate a priority relationship between the first network and the second network.

[0120] In an embodiment of the present application, the network priority information may be determined by the terminal and sent to the first core network device or the second core network device, or the network side may determine the network priority information and send it to the terminal.

[0121] In an embodiment of the present application, a terminal receives a first indication message sent by a first core network device or a second indication message sent by a first access network device; wherein, the first core network device and the first access network device belong to a first network, and the first indication message or the second indication message is used to indicate that the terminal enters a connected state in a second network; the terminal enters a connected state in the second network according to the first indication message or the second indication message. Through the above scheme, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor the paging in the first network, without having to monitor the paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0122] like Figure 5 As shown, an embodiment of the present application provides a communication method, including:

[0123] Step 501: The first core network device sends first indication information to the terminal or sends second indication information to the terminal through the first access network device or sends third indication information to the first access network device, wherein the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network, and the third indication information is used to indicate that the terminal is redirected or switched to the second network;

[0124] Among them, the first core network device and the first access network device belong to the first network.

[0125] In the embodiment of the present application, the first network corresponds to a first radio access technology (Radio Access Technology, RAT), and the second network corresponds to a second RAT, and the first RAT and the second RAT are different.

[0126] Optionally, the first network in the embodiment of the present application is a 5G network, and the second network is a 4G network; or, the first network is a 4G network, and the second network is a 5G network;

[0127] Of course, the first network mentioned above can also be a 6G network, and the second network can be a 5G network or a 4G network; or, the first network mentioned above can be a 4G network, and the second network can be a 5G network or a 6G network.

[0128] Assuming that the above-mentioned first network is a 5G network and the above-mentioned second network is a 4G network, the above-mentioned first core network device is AMF.

[0129] Optionally, the first access network device may specifically be a base station.

[0130] In an embodiment of the present application, the first core network device sends a first indication message to the terminal or sends a second indication message to the terminal through the first access network device or sends a third indication message to the first access network device, the first indication message or the second indication message is used to indicate that the terminal enters a connected state in the second network, and the third indication message is used to indicate that the terminal is redirected or switched to the second network. Through the above scheme, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor the paging in the first network, without having to monitor the paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0131] Optionally, the first core network device sending the first indication information to the terminal or sending the second indication information to the terminal through the first access network device or sending the third indication information to the first access device includes:

[0132] The first core network device sends first indication information to the terminal or sends second indication information to the terminal through the first access network device or sends third indication information to the first access network device according to the connection status of the terminal in the first network or network priority information, and the network priority information is used to indicate the priority relationship between the first network and the second network.

[0133] The above connection state includes a connected state or an idle state. As an optional implementation, the first core network device sends a first indication message to the terminal or sends a second indication message to the terminal through the first access network device or sends a third indication message to the first access device according to the connection state of the terminal in the first network or the network priority information, including at least one of the following:

[0134] When the terminal is in a connected state in the first network, the first core network device sends the first indication information to the terminal;

[0135] When the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first core network device sends the first indication information to the terminal, or sends the second indication information to the terminal through the first access network device, or sends third indication information to the first access network device.

[0136] In the embodiment of the present application, when the terminal is in a connected state in the first network, the first core network device sends the first indication information to the terminal, further compares the priorities of the first network and the second network when the terminal is in an idle state in the first network, and notifies the terminal to enter a connected state in the second network through the high-priority network. The high-priority network is predetermined by the network side or the terminal side, thus achieving the purpose of paging the terminal through the predetermined high-priority network in the two networks.

[0137] As an optional implementation manner, when the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first core network device sends the first indication information to the terminal, including:

[0138] When the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first core network device sends a second paging message to the terminal, and after the terminal enters a connected state, sends a non-access layer message to the terminal, wherein the non-access layer message includes the first indication information.

[0139] Here, when the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the terminal first enters a connected state in the first network, and then the first core network device notifies the terminal to enter a connected state in the second network through a non-access layer message, and the terminal enters a connected state in the second network based on the non-access layer message.

[0140] Assume that the first network is a 5G network, the second network is a 4G network, and the first core network device is AMF. Figure 6 As shown, the implementation includes:

[0141] Step 1: AMF sends a paging message to all base stations in the area where the UE is located.

[0142] This step is Figure 3 Same as step 4 in .

[0143] Step 2: The base station pages the UE within its coverage area.

[0144] This step is Figure 3 Same as step 5 in .

[0145] Step 3: The terminal enters the connected state in the 5G network through a service request.

[0146] Step 4: AMF sends the above-mentioned non-access layer message to the UE, where the non-access layer message includes the above-mentioned first indication information.

[0147] The terminal enters a connected state in the 4G network according to the first indication information.

[0148] As an optional implementation manner, the sending the second indication information to the terminal through the first access network device includes:

[0149] The first core network device sends a third paging message to the first access network device, where the third paging message includes fourth indication information, and the fourth indication information is used to instruct the first access network device to send the second indication information to the terminal through the first paging message.

[0150] Optionally, the second indication information includes at least one of the following:

[0151] The radio access technology RAT corresponding to the second network;

[0152] Information used to instruct the low priority network to trigger the first paging message;

[0153] Dual registration instructions;

[0154] Double transmission indication information.

[0155] The second indication information has been described in detail in the terminal side method claim and will not be repeated here.

[0156] Optionally, the fourth indication information includes at least one of the following:

[0157] The radio access technology RAT corresponding to the second network;

[0158] Information used to instruct the low priority network to trigger the first paging message;

[0159] Dual registration instructions;

[0160] Double transmission indication information.

[0161] The fourth indication information may be the same as or different from the second indication information.

[0162] Assume that the first network is a 5G network, the second network is a 4G network, the first core network device is an AMF, and the first access network device is a gNB. Figure 7 As shown, the implementation includes:

[0163] Step 1: AMF sends a third paging message to gNB.

[0164] Step 2: The gNB sends a fourth paging message to the UE according to the third paging message.

[0165] The terminal enters a connected state in the second network based on the second indication information in the fourth paging message.

[0166] As an implementation manner, when the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first core network device sends third indication information to the first access network device to trigger the terminal to enter a connected state in the second network, such as Figure 8 As shown (assuming that the first network is a 5G network, the second network is a 4G network, the first core network device is an AMF, and the first access network device is a gNB), including:

[0167] Step 1: AMF sends a paging message to all base stations in the area where the UE is located.

[0168] This step is Figure 3 Same as step 4 in .

[0169] Step 2: The base station pages the UE within its coverage area.

[0170] This step is Figure 3 Same as step 5 in .

[0171] Step 3: The UE enters the connected state in the 5G network through a service request;

[0172] Step 4: AMF sends third indication information to the base station to instruct the base station to redirect the UE to the 4G network or switch to the 4G network.

[0173] Step 5: The base station initiates a redirection or handover process.

[0174] Optionally, the method of the embodiment of the present application further includes:

[0175] The first core network device receives a third message sent by the second core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network;

[0176] The second core network device belongs to the second network.

[0177] In an embodiment of the present application, after the first core network device receives the third message sent by the second core network device, it sends the first indication information to the terminal or sends the second indication information to the terminal through the first access network device or sends the third indication information to the first access device.

[0178] As an implementation manner, the third message includes fourth indication information, and the fourth indication information is used to indicate paging the terminal.

[0179] Optionally, the method of the embodiment of the present application further includes:

[0180] When the terminal is in an idle state in the first network and the priority of the first network is lower than the priority of the second network, the first core network device sends a fourth message to the second core network device, and the fourth message is used to reject the third message or to indicate that the terminal is in an idle state in the first network.

[0181] In an embodiment of the present application, when the terminal is in an idle state in the first network and the priority of the first network is lower than the priority of the second network, the first core network device sends a fourth message to the second core network device, so that the second core network device sends a fourth paging message to the terminal based on the fourth message, that is, the second core network device enters a connected state in the second network through the terminal.

[0182] Optionally, the first indication information includes at least one of the following:

[0183] The radio access technology RAT corresponding to the second network;

[0184] indication information used to indicate the second network;

[0185] Dual registration instructions;

[0186] Double transmission indication information.

[0187] The first indication information has been described in detail in the method claim on the terminal side and will not be repeated here.

[0188] Optionally, the method of the embodiment of the present application further includes:

[0189] A first core network device receives a first message sent by a terminal, wherein the first message includes first identification information or the network priority information, wherein the first identification information is used to determine a second core network device providing service for the terminal in a second network, and the network priority information is used to indicate a priority relationship between the first network and the second network.

[0190] Optionally, the first identification information includes a globally unique temporary terminal identifier, or a globally unique second core network device identifier.

[0191] For example, when the first network is a 5G network and the second network is a 4G network, the first identification information includes a 4G globally unique temporary UE identity (Globally Unique Temporary UE Identity, GUTI) or a 4G globally unique MME identity (Globally Unique MME Identity, GUMMEI).

[0192] Here, the terminal sends the first identification information to the first core network device, so that the first core network device can determine the second core network device providing services for the terminal based on the first identification information, thereby facilitating subsequent interaction with the second core network device.

[0193] Optionally, the method of the embodiment of the present application further includes:

[0194] The first core network device sends a fifth message to the second core network device based on the first identification information, and the fifth message includes the identification of the first core network device, network priority information or the identification of the terminal.

[0195] Here, the fifth message is sent to the second core network device so that the second core network device can determine the first core network device providing services for the terminal and network priority information.

[0196] Optionally, the method of the embodiment of the present application further includes:

[0197] Receive identification information of the second core network device sent by the second core network device.

[0198] Assuming that the first network is a 5G network, the second network is a 4G network, the first core network device is AMF, the second core network device is MME, and the first access network device is gNB, the process of AMF or MME obtaining the other party's address or network priority information is described below in combination with Scheme 1 and Scheme 2.

[0199] Solution 1: If Fig. 9 As shown, including:

[0200] Step 1: The UE sends a first message to the AMF through the 5G network. The first message includes at least one of the following:

[0201] The identifier of the 4G network is used by the AMF to determine the MME that provides services for the UE through the 4G network. The identifier of the 4G network includes at least one of the following: 4G GUTI; 4G GUMMEI;

[0202] Network priority information.

[0203] Optionally, the first message is a NAS message.

[0204] Step 2: The AMF sends a fifth message to the MME according to the identifier of the 4G network. The fifth message includes at least one of the following:

[0205] The identifier of AMF, where the identifier of AMF includes: a globally unique AMF identifier (Globally Unique AMFIdentifier, GUAMI), an IP address of AMF, or a fully qualified domain name (Fully Qualified Domain Name, FQDN) of AMF;

[0206] Network priority information.

[0207] Step 3 (optional): The MME returns the MME identifier to the AMF.

[0208] The identifier of the MME includes at least one of the following: GUMMEI; IP address of the MME; FQDN of the MME.

[0209] The AMF records the MME identifier to facilitate subsequent communication with the MME.

[0210] It should be noted that when the AMF changes, the new AMF re-executes the above step 2.

[0211] Of course, the above solution can also be: UE sends a first message to MME through the 4G network; MME sends a fifth message to AMF; AMF returns the AMF identifier.

[0212] Option 2: If Fig.10 As shown, including:

[0213] Step 1: The UE sends a first message to the AMF through the 5G network. The first message includes at least one of the following:

[0214] The identifier of the 4G network is used by the AMF to determine the MME that provides services for the UE through the 4G network. The identifier of the 4G network includes at least one of the following: 4G GUTI; 4G GUMMEI;

[0215] Network priority information.

[0216] Optionally, the first message is a NAS message.

[0217] Step 2: The UE sends a second message to the MME via the 4G network.

[0218] The second message includes at least one of the following:

[0219] The identifier of the 5G network is used by the MME to determine the AMF that the 5G network provides services for the UE. The identifier of the 5G network may include 5G GUTI or 5G GUAMI;

[0220] Network priority information.

[0221] This step 2 can be performed before or after the above step 1, or can be performed simultaneously with the above step 1.

[0222] Optionally, the method of the embodiment of the present application further includes:

[0223] The first core network device sends network priority information to the terminal, where the network priority information is determined by the first core network device itself or obtained from a third core network device.

[0224] Exemplarily, the third core network device is a PCF.

[0225] In an embodiment of the present application, the terminal can decide which network has a higher paging priority and send the result of the UE decision (network priority information) to the network, or the network side can decide which network has a higher paging priority and send the decision result (network priority information) to the terminal.

[0226] like Fig.11 As shown, the solution for deciding the paging priority by the network side includes:

[0227] Step 1 (optional): PCF sends a UE policy container to AMF, which contains network priority information.

[0228] Step 2: AMF sends network priority information to the UE.

[0229] In an embodiment of the present application, if the AMF receives the UE policy container in step 1, the AMF forwards the UE policy container to the UE; alternatively, the AMF determines which network to use first for sending paging based on the operator's configuration or the UE's contract information, and sends network priority information to the UE through a NAS message.

[0230] In addition, in an embodiment of the present application, the MME may also determine which network to use first for sending paging based on the operator's configuration or the UE's subscription information, and send network priority information to the UE via a NAS message.

[0231] In an embodiment of the present application, the first core network device sends a first indication message to the terminal or sends a second indication message to the terminal through the first access network device or sends a third indication message to the first access network device, the first indication message or the second indication message is used to indicate that the terminal enters a connected state in the second network, and the third indication message is used to indicate that the terminal is redirected or switched to the second network. Through the above scheme, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor the paging in the first network, without having to monitor the paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0232] like Fig.12 As shown, the embodiment of the present application also provides a communication method, including:

[0233] Step 1201: The second core network device sends a third message to the first core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network.

[0234] Optionally, after receiving the fourth message sent by the first core network device, the second core network device sends a fourth paging message to the terminal, where the fourth message is used to reject the third message or the fourth message is used to indicate that the terminal is in an idle state in the second network;

[0235] The first core network device belongs to a first network, and the second core network device belongs to a second network.

[0236] In an embodiment of the present application, the second core network device sends a third message to the first core network device, and the third message is used to request the second core network device to trigger the terminal to enter a connected state in the second network; after receiving the fourth message sent by the first core network device, the second core network device sends a fourth paging message to the terminal, and the fourth message is used to reject the third message or the fourth message is used to indicate that the terminal is in an idle state in the second network. Through the above scheme, when the second network pages the terminal, the second core network device can request the first core network device to trigger the terminal to enter a connected state in the second network, so that when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor paging in the first network, without having to monitor paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0237] Optionally, the method of the embodiment of the present application further includes:

[0238] A second message sent by a receiving terminal includes second identification information or network priority information, the second identification information is used to determine the first core network device in the first network that provides services to the terminal, and the network priority information is used to indicate the priority relationship between the first network and the second network.

[0239] Optionally, the second identification information includes a globally unique temporary terminal identifier, or a globally unique first core network device identifier.

[0240] It should be noted that the second message has been described in detail in the above-mentioned terminal side method embodiment and will not be repeated here.

[0241] Optionally, the method of the embodiment of the present application further includes:

[0242] Obtain a fifth message sent by the first core network device, where the fifth message includes an identifier of the first core network device, network priority information, or an identifier of the terminal.

[0243] Optionally, the method of the embodiment of the present application further includes:

[0244] Send identification information of the second core network device to the first core network device.

[0245] Optionally, the third message includes fifth indication information, and the fifth indication information is used to indicate paging the terminal.

[0246] It should be noted that the method executed by the above-mentioned second core network device is a method corresponding to the method executed by the above-mentioned first core network device or terminal, and will not be repeated here.

[0247] In an embodiment of the present application, the second core network device sends a third message to the first core network device, and the third message is used to request the second core network device to trigger the terminal to enter a connected state in the second network; after receiving the fourth message sent by the first core network device, the second core network device sends a fourth paging message to the terminal, and the fourth message is used to reject the third message or the fourth message is used to indicate that the terminal is in an idle state in the second network. Through the above scheme, when the second network pages the terminal, the second core network device can request the first core network device to trigger the terminal to enter a connected state in the second network, so that when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor paging in the first network, without having to monitor paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0248] The communication method of the present application is described below in conjunction with Example 1 and Example 2.

[0249] Embodiment 1:

[0250] like Fig.13 As shown, including:

[0251] Step 1: PGW receives a downlink data packet sent to UE and forwards the data packet to SGW;

[0252] Step 2: SGW sends a downlink data notification message to MME.

[0253] Step 3: The MME sends a third message to the AMF that provides services for the UE, where the third message is used to request the AMF to trigger the UE to enter a connected state in the 4G network.

[0254] Optionally, the third message includes fourth indication information, and the fourth indication information is used to indicate paging the terminal.

[0255] Step 4a: When the AMF determines that the UE is in a connected state, it sends a first indication message to the UE, where the first indication message is used to indicate that the terminal enters a connected state in the 4G network.

[0256] The first indication information may be carried via a NAS notification message.

[0257] The first indication information includes at least one of the following:

[0258] 4G RAT;

[0259] Indication information for indicating a 4G network;

[0260] Dual registration instructions;

[0261] Double transmission indication information.

[0262] Step 4b: When AMF determines that the UE is in idle state and the priority of the 5G network is high, AMF triggers the UE to enter the connected state in the 4G network.

[0263] The process of AMF triggering UE to enter the connected state in the 4G network can be referred to Figure 6 , Figure 7 or Figure 8 The scheme shown.

[0264] Embodiment 2:

[0265] like Fig.14 As shown, including:

[0266] Step 1: UPF receives the data packet sent to UE;

[0267] Step 2: UPF sends a data notification message to SMF;

[0268] Step 3: SMF sends a N1N2 message forwarding (Namf_Communication_N1N2MessageTransfer) message to AMF to request to send downlink data to the UE;

[0269] Step 4: The AMF sends a third message to the MME providing services for the UE, where the third message is used to request the MME to trigger the UE to enter a connected state in the 5G network;

[0270] Step 5a: The MME determines that the UE is in a connected state and sends a first indication message to the UE, where the first indication message is used to instruct the terminal to enter a connected state in the 5G network.

[0271] The first indication information may be carried via a NAS notification message or a 4G RAT notification message.

[0272] The first indication information includes at least one of the following:

[0273] 5G RAT;

[0274] Indication information for indicating a 5G network;

[0275] Dual registration instructions;

[0276] Double transmission indication information.

[0277] Step 5b: If the MME determines that the UE is in an idle state and the priority of 5G is high, the MME sends a rejection message to the AMF, which optionally carries an indication that the UE is in an idle state.

[0278] Step 6b: AMF sends a paging message to all base stations in the area where the UE is located

[0279] Step 7b: The base station pages the UE within its coverage area.

[0280] Through the solution of the present application, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can monitor the paging only on the first network, without having to monitor the paging on the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0281] The communication method provided in the embodiment of the present application can be executed by a communication device. In the embodiment of the present application, the communication device provided in the embodiment of the present application is described by taking the communication device executing the communication method as an example.

[0282] like Fig.15As shown, the embodiment of the present application provides a communication device 1500, including:

[0283] The first receiving module 1501 is used to receive first indication information sent by a first core network device or second indication information sent by a first access network device; wherein the first core network device and the first access network device belong to a first network, and the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network;

[0284] The processing module 1502 is used to enter a connected state in the second network according to the first indication information or the second indication information.

[0285] Optionally, the first indication information includes at least one of the following:

[0286] The radio access technology RAT corresponding to the second network;

[0287] indication information used to indicate the second network;

[0288] Dual registration instructions;

[0289] Double transmission indication information.

[0290] Optionally, the first receiving module is used to receive a non-access layer message sent by a first core network device, and the non-access layer message includes the first indication information.

[0291] Optionally, the first receiving module is used to receive a first paging message sent by the first access network device, and the first paging message includes the second indication information.

[0292] Optionally, the second indication information includes at least one of the following:

[0293] The radio access technology RAT corresponding to the second network;

[0294] Information used to instruct the low priority network to trigger the first paging message;

[0295] Dual registration instructions;

[0296] Double transmission indication information.

[0297] Optionally, the device of the embodiment of the present application further includes:

[0298] The third sending module is configured to perform at least one of the following:

[0299] Sending a first message to the first core network device, where the first message includes first identification information or network priority information, where the first identification information is used to determine the second core network device that provides services for the terminal in the second network, and the network priority information is used to indicate a priority relationship between the first network and the second network;

[0300] A second message is sent to a second core network device, wherein the second message includes second identification information or the network priority information, the second identification information is used to determine the first core network device that provides services to the terminal in the first network, the network priority information is used to indicate the priority relationship between the first network and the second network, and the second core network device belongs to the second network.

[0301] Optionally, the first identification information includes a globally unique temporary terminal identifier, or a globally unique second core network device identifier;

[0302] Alternatively, the second identification information includes a globally unique temporary terminal identifier, or a globally unique first core network device identifier.

[0303] Optionally, the device of the embodiment of the present application further includes:

[0304] The second receiving module is used to receive network priority information sent by the first core network device or the second core network device, where the network priority information is used to indicate the priority relationship between the first network and the second network.

[0305] In an embodiment of the present application, a first indication message sent by a first core network device or a second indication message sent by a first access network device is received; wherein, the first core network device and the first access network device belong to a first network, and the first indication message or the second indication message is used to indicate that the terminal enters a connected state in the second network; the terminal enters a connected state in the second network according to the first indication message or the second indication message. Through the above scheme, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor the paging in the first network, without having to monitor the paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0306] like Fig.16 As shown, the embodiment of the present application provides a communication device 1600, including:

[0307] The first sending module 1601 is used to send first indication information to the terminal or send second indication information to the terminal through the first access network device or send third indication information to the first access network device, wherein the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network, and the third indication information is used to indicate that the terminal is redirected or switched to the second network;

[0308] Among them, the first core network device and the first access network device belong to the first network.

[0309] Optionally, the first sending module is used to:

[0310] According to the connection status of the terminal in the first network or the network priority information, the first indication information is sent to the terminal, the second indication information is sent to the terminal through the first access network device, or the third indication information is sent to the first access network device, and the network priority information is used to indicate the priority relationship between the first network and the second network.

[0311] Optionally, the first sending module is used to perform at least one of the following:

[0312] When the terminal is in a connected state in the first network, sending the first indication information to the terminal;

[0313] When the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first indication information is sent to the terminal, or the second indication information is sent to the terminal through the first access network device, or the third indication information is sent to the first access network device.

[0314] Optionally, the first sending module is used to:

[0315] When the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, a second paging message is sent to the terminal, and after the terminal enters a connected state, a non-access layer message is sent to the terminal, wherein the non-access layer message includes the first indication information.

[0316] Optionally, the first sending module is used to:

[0317] A third paging message is sent to the first access network device, where the third paging message includes fourth indication information, and the fourth indication information is used to instruct the first access network device to send the second indication information to the terminal through the first paging message.

[0318] Optionally, the second indication information includes at least one of the following:

[0319] The radio access technology RAT corresponding to the second network;

[0320] Information used to instruct the low priority network to trigger the first paging message;

[0321] Dual registration instructions;

[0322] Double transmission indication information.

[0323] Optionally, the device of the embodiment of the present application further includes:

[0324] A third receiving module, used to receive a third message sent by the second core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network;

[0325] The second core network device belongs to the second network.

[0326] Optionally, the third message includes fifth indication information, and the fifth indication information is used to indicate paging the terminal.

[0327] Optionally, the device of the embodiment of the present application further includes:

[0328] The fourth sending module is used to send a fourth message to the second core network device when the terminal is in an idle state in the first network and the priority of the first network is lower than the priority of the second network. The fourth message is used to reject the third message or to indicate that the terminal is in an idle state in the first network.

[0329] Optionally, the first indication information includes at least one of the following:

[0330] The radio access technology RAT corresponding to the second network;

[0331] indication information used to indicate the second network;

[0332] Dual registration instructions;

[0333] Double transmission indication information.

[0334] Optionally, the device of the embodiment of the present application further includes:

[0335] The fourth receiving module is used to receive a first message sent by the terminal, the first message includes first identification information or the network priority information, the first identification information is used to determine the second core network device in the second network that provides services for the terminal, and the network priority information is used to indicate the priority relationship between the first network and the second network.

[0336] Optionally, the first identification information includes a globally unique temporary terminal identifier, or a globally unique second core network device identifier.

[0337] Optionally, the device of the embodiment of the present application further includes:

[0338] The fifth sending module is used to send a fifth message to the second core network device according to the first identification information, and the fifth message includes the identification of the first core network device, network priority information or the identification of the terminal.

[0339] Optionally, the device of the embodiment of the present application further includes:

[0340] The fifth receiving module is used to receive the identification information of the second core network device sent by the second core network device.

[0341] Optionally, the device of the embodiment of the present application further includes:

[0342] The sixth sending module is used to send network priority information to the terminal, where the network priority information is determined by the first core network device itself or obtained from the third core network device.

[0343] In an embodiment of the present application, the first core network device sends a first indication message to the terminal or sends a second indication message to the terminal through the first access network device or sends a third indication message to the first access network device, the first indication message or the second indication message is used to indicate that the terminal enters a connected state in the second network, and the third indication message is used to indicate that the terminal is redirected or switched to the second network. Through the above scheme, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor the paging in the first network, without having to monitor the paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0344] like Fig.17 As shown, the embodiment of the present application provides a communication device 1700, including:

[0345] The second sending module 1701 is used to send a third message to the first core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network;

[0346] The first core network device belongs to the first network, and the second core network device belongs to the second network.

[0347] Optionally, the device of the embodiment of the present application further includes:

[0348] The sixth receiving module is used to receive a second message sent by the terminal, the second message includes second identification information or network priority information, the second identification information is used to determine the first core network device in the first network that provides services to the terminal, and the network priority information is used to indicate the priority relationship between the first network and the second network.

[0349] Optionally, the second identification information includes a globally unique temporary terminal identifier, or a globally unique first core network device identifier.

[0350] Optionally, the device of the embodiment of the present application further includes:

[0351] The seventh receiving module is used to obtain the fifth message sent by the first core network device, and the fifth message includes the identifier of the first core network device, network priority information or the identifier of the terminal.

[0352] Optionally, the device of the embodiment of the present application further includes:

[0353] The seventh sending module is used to send the identification information of the second core network device to the first core network device.

[0354] Optionally, the third message includes fifth indication information, and the fifth indication information is used to indicate paging the terminal.

[0355] In an embodiment of the present application, the second core network device sends a third message to the first core network device, and the third message is used to request the second core network device to trigger the terminal to enter a connected state in the second network; after receiving the fourth message sent by the first core network device, the second core network device sends a fourth paging message to the terminal, and the fourth message is used to reject the third message or the fourth message is used to indicate that the terminal is in an idle state in the second network. Through the above scheme, when the second network pages the terminal, the second core network device can request the first core network device to trigger the terminal to enter a connected state in the second network, so that when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor paging in the first network, without having to monitor paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0356] The communication device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. For example, the terminal may include but is not limited to the types of the terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0357] The communication device provided in the embodiment of the present application can achieve Figures 4 to 14 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0358] Optional, such as Fig.18 As shown, the embodiment of the present application also provides a communication device 1800, including a processor 1801 and a memory 1802, and the memory 1802 stores a program or instruction that can be run on the processor 1801. For example, when the communication device 1800 is a terminal, the program or instruction is executed by the processor 1801 to implement the various steps of the communication method embodiment executed by the above terminal, and can achieve the same technical effect. When the communication device 1800 is a network side device, the program or instruction is executed by the processor 1801 to implement the various steps of the method embodiment executed by the first core network device or the second core network device, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0359] An embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is used to receive a first indication message sent by a first core network device or a second indication message sent by a first access network device; wherein the first core network device and the first access network device belong to a first network, and the first indication message or the second indication message is used to indicate that the terminal enters a connected state in the second network; the processor is used to enter a connected state in the second network according to the first indication message or the second indication message. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, Fig.19 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0360] The terminal 1900 includes but is not limited to: a radio frequency unit 1901, a network module 1902, an audio output unit 1903, an input unit 1904, a sensor 1905, a display unit 1906, a user input unit 1907, an interface unit 1908, a memory 1909 and at least some of the components of the processor 1910.

[0361] Those skilled in the art will appreciate that the terminal 1900 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 1910 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.19 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0362] It should be understood that in the embodiment of the present application, the input unit 1904 may include a graphics processing unit (GPU) 19041 and a microphone 19042, and the graphics processor 19041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1906 may include a display panel 19061, and the display panel 19061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1907 includes a touch panel 19071 and at least one of other input devices 19072. The touch panel 19071 is also called a touch screen. The touch panel 19071 may include two parts: a touch detection device and a touch controller. Other input devices 19072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0363] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 1901 can transmit the data to the processor 1910 for processing; in addition, the RF unit 1901 can send uplink data to the network side device. Generally, the RF unit 1901 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0364] The memory 1909 can be used to store software programs or instructions and various data. The memory 1909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 1909 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 1909 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0365] The processor 1910 may include one or more processing units; optionally, the processor 1910 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1910.

[0366] The radio frequency unit 1901 is used to receive first indication information sent by a first core network device or second indication information sent by a first access network device; wherein the first core network device and the first access network device belong to a first network, and the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network;

[0367] Processor 1910 is configured to enter a connected state in the second network according to the first indication information or the second indication information.

[0368] Optionally, the first indication information includes at least one of the following:

[0369] The radio access technology RAT corresponding to the second network;

[0370] indication information used to indicate the second network;

[0371] Dual registration instructions;

[0372] Double transmission indication information.

[0373] Optionally, the radio frequency unit 1901 is further used to receive a non-access layer message sent by the first core network device, where the non-access layer message includes the first indication information.

[0374] Optionally, the radio frequency unit 1901 is further used to receive a first paging message sent by the first access network device, where the first paging message includes the second indication information.

[0375] Optionally, the second indication information includes at least one of the following:

[0376] The radio access technology RAT corresponding to the second network;

[0377] Information used to instruct the low priority network to trigger the first paging message;

[0378] Dual registration instructions;

[0379] Double transmission indication information.

[0380] Optionally, the radio frequency unit 1901 is further configured to perform at least one of the following:

[0381] Sending a first message to the first core network device, where the first message includes first identification information or network priority information, where the first identification information is used to determine the second core network device that provides services for the terminal in the second network, and the network priority information is used to indicate a priority relationship between the first network and the second network;

[0382] A second message is sent to the second core network device, wherein the second message includes second identification information or the network priority information, the second identification information is used to determine the first core network device that provides services to the terminal in the first network, and the network priority information is used to indicate the priority relationship between the first network and the second network.

[0383] Optionally, the first identification information includes a globally unique temporary terminal identifier, or a globally unique second core network device identifier;

[0384] Alternatively, the second identification information includes a globally unique temporary terminal identifier, or a globally unique first core network device identifier.

[0385] Optionally, the radio frequency unit 1901 is also used to receive network priority information sent by the first core network device or the second core network device, where the network priority information is used to indicate a priority relationship between the first network and the second network.

[0386] In an embodiment of the present application, a terminal receives a first indication message sent by a first core network device or a second indication message sent by a first access network device; wherein, the first core network device and the first access network device belong to a first network, and the first indication message or the second indication message is used to indicate that the terminal enters a connected state in the second network; the terminal enters a connected state in the second network according to the first indication message or the second indication message. Through the above scheme, when the second network pages the terminal, the first network can trigger the terminal to enter a connected state in the second network, that is, the second network can page the terminal through the first network, so that the terminal can only monitor the paging in the first network, without having to monitor the paging in the first network and the second network at the same time, thereby effectively saving the power consumption of the terminal and increasing the standby time of the terminal.

[0387] The embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is used to send a first indication information to the terminal or send a second indication information to the terminal through a first access network device or send a third indication information to the first access network device, the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network, the third indication information is used to indicate that the terminal is redirected or switched to the second network or is used to send a third message to the first core network device, the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network. This network side device embodiment corresponds to the above-mentioned method embodiment on the first core network device side or the second core network device side, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this network side device embodiment and can achieve the same technical effect.

[0388] Specifically, the embodiment of the present application also provides a network side device. Fig. 20 As shown, the network side device 2000 includes: a processor 2001, a network interface 2002 and a memory 2003. The network interface 2002 is, for example, a common public radio interface (CPRI).

[0389] Specifically, the network side device 2000 of the embodiment of the present invention further includes: an instruction or program stored in the memory 2003 and executable on the processor 2001, and the processor 2001 calls the instruction or program in the memory 2003 to execute Fig.16 or Fig.17 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0390] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned communication method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0391] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0392] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned communication method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0393] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0394] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium and is executed by at least one processor to implement the various processes of the above-mentioned communication method embodiment and can achieve the same technical effect. To avoid repetition, it will not be described here.

[0395] An embodiment of the present application also provides a communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the communication method executed by the terminal as described above, and the network side device can be used to execute the steps of the communication method executed by the first core network device or the second core network device as described above.

[0396] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0397] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0398] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A communication method, characterized in that: include: The terminal receives first indication information sent by a first core network device or second indication information sent by a first access network device; wherein the first core network device and the first access network device belong to a first network, and the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network; The terminal enters a connected state in the second network according to the first indication information or the second indication information.

2. The method according to claim 1, characterized in that The first indication information includes at least one of the following: The radio access technology RAT corresponding to the second network; indication information used to indicate the second network; Dual registration instructions; Double transmission indication information.

3. The method according to claim 1 or 2, characterized in that: The terminal receives first indication information sent by a first core network device, including: The terminal receives a non-access layer message sent by a first core network device, where the non-access layer message includes the first indication information.

4. The method according to claim 1 or 2, characterized in that: The terminal receives second indication information sent by the first access network device, including: The terminal receives a first paging message sent by the first access network device, where the first paging message includes the second indication information.

5. The method according to claim 1 or 4, characterized in that: The second indication information includes at least one of the following: The radio access technology RAT corresponding to the second network; Information used to indicate that the low priority network triggers the first paging message; Dual registration instructions; Double transmission indication information.

6. The method according to any one of claims 1 to 5, characterized in that: Also includes at least one of the following: Sending a first message to the first core network device, where the first message includes first identification information or network priority information, where the first identification information is used to determine a second core network device in the second network that provides services for the terminal, and the network priority information is used to indicate a priority relationship between the first network and the second network; A second message is sent to a second core network device, wherein the second message includes second identification information or the network priority information, the second identification information is used to determine the first core network device that provides services to the terminal in the first network, the network priority information is used to indicate the priority relationship between the first network and the second network, and the second core network device belongs to the second network.

7. The method according to claim 6, characterized in that The first identification information includes a globally unique temporary terminal identifier, or a globally unique second core network device identifier; Alternatively, the second identification information includes a globally unique temporary terminal identifier, or a globally unique first core network device identifier.

8. The method according to any one of claims 1 to 6, characterized in that: Also includes: Receive network priority information sent by the first core network device or the second core network device, where the network priority information is used to indicate a priority relationship between the first network and the second network.

9. A communication method, characterized in that: include: The first core network device sends first indication information to the terminal or sends second indication information to the terminal through the first access network device or sends third indication information to the first access network device, wherein the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network, and the third indication information is used to indicate that the terminal is redirected or switched to the second network; Among them, the first core network device and the first access network device belong to the first network.

10. The method according to claim 9, characterized in that The first core network device sends first indication information to the terminal, or sends second indication information to the terminal through the first access network device, or sends third indication information to the first access device, including: The first core network device sends first indication information to the terminal or sends second indication information to the terminal through the first access network device or sends third indication information to the first access network device according to the connection status of the terminal in the first network or network priority information, and the network priority information is used to indicate the priority relationship between the first network and the second network.

11. The method according to claim 10, characterized in that The first core network device sends first indication information to the terminal or sends second indication information to the terminal through the first access network device or sends third indication information to the first access device according to the connection state of the terminal in the first network or network priority information, including at least one of the following: When the terminal is in a connected state in the first network, the first core network device sends the first indication information to the terminal; When the terminal is in an idle state in the first network and the priority of the first network is higher than that of the second network, the first core network device sends the first indication information to the terminal, or sends the second indication information to the terminal through the first access network device, or sends third indication information to the first access network device.

12. The method according to claim 11, characterized in that When the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first core network device sends the first indication information to the terminal, including: When the terminal is in an idle state in the first network and the priority of the first network is higher than the priority of the second network, the first core network device sends a second paging message to the terminal, and after the terminal enters a connected state, sends a non-access layer message to the terminal, wherein the non-access layer message includes the first indication information.

13. The method according to any one of claims 9 to 12, characterized in that: The sending the second indication information to the terminal through the first access network device includes: The first core network device sends a third paging message to the first access network device, where the third paging message includes fourth indication information, and the fourth indication information is used to instruct the first access network device to send the second indication information to the terminal through the first paging message.

14. The method according to claim 13, characterized in that The second indication information includes at least one of the following: The radio access technology RAT corresponding to the second network; Information used to instruct the low priority network to trigger the first paging message; Dual registration instructions; Double transmission indication information.

15. The method according to any one of claims 9 to 14, characterized in that: The method further comprises: The first core network device receives a third message sent by the second core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network; The second core network device belongs to the second network.

16. The method according to claim 15, characterized in that The third message includes fifth indication information, and the fifth indication information is used to instruct paging the terminal.

17. The method according to claim 15 or 16, characterized in that Also includes: When the terminal is in an idle state in the first network and the priority of the first network is lower than the priority of the second network, the first core network device sends a fourth message to the second core network device, and the fourth message is used to reject the third message or to indicate that the terminal is in an idle state in the first network.

18. The method according to any one of claims 9 to 17, characterized in that The first indication information includes at least one of the following: The radio access technology RAT corresponding to the second network; indication information used to indicate the second network; Dual registration instructions; Double transmission indication information.

19. The method according to any one of claims 9 to 18, characterized in that: Also includes: A first core network device receives a first message sent by a terminal, wherein the first message includes first identification information or the network priority information, wherein the first identification information is used to determine a second core network device in a second network that provides services for the terminal, and the network priority information is used to indicate a priority relationship between the first network and the second network.

20. The method according to claim 19, characterized in that The first identification information includes a globally unique temporary terminal identifier, or a globally unique second core network device identifier.

21. The method according to claim 19 or 20, characterized in that The method further comprises: The first core network device sends a fifth message to the second core network device based on the first identification information, and the fifth message includes the identification of the first core network device, network priority information or the identification of the terminal.

22. The method according to claim 21, characterized in that Also includes: Receive identification information of the second core network device sent by the second core network device.

23. The method according to any one of claims 9 to 22, characterized in that Also includes: The first core network device sends network priority information to the terminal, where the network priority information is determined by the first core network device itself or obtained from a third core network device.

24. A communication method, characterized in that: include: The second core network device sends a third message to the first core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network; The first core network device belongs to a first network, and the second core network device belongs to a second network.

25. The method according to claim 24, characterized in that Also includes: A second message sent by a receiving terminal includes second identification information or network priority information, the second identification information is used to determine the first core network device in the first network that provides services to the terminal, and the network priority information is used to indicate the priority relationship between the first network and the second network.

26. The method according to claim 25, characterized in that The second identification information includes a globally unique temporary terminal identifier, or a globally unique first core network device identifier.

27. The method according to claim 25 or 26, characterized in that Also includes: Obtain a fifth message sent by the first core network device, where the fifth message includes an identifier of the first core network device, network priority information, or an identifier of the terminal.

28. The method according to claim 27, characterized in that Also includes: Send identification information of the second core network device to the first core network device.

29. The method according to any one of claims 24 to 28, characterized in that The third message includes fifth indication information, and the fifth indication information is used to instruct paging the terminal.

30. A communication device, characterized in that: include: A first receiving module, used to receive first indication information sent by a first core network device or second indication information sent by a first access network device; wherein the first core network device and the first access network device belong to a first network, and the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network; A processing module is used to enter a connection state in the second network according to the first indication information or the second indication information.

31. A communication device, characterized in that: include: A first sending module, used to send first indication information to the terminal or send second indication information to the terminal through the first access network device or send third indication information to the first access network device, wherein the first indication information or the second indication information is used to indicate that the terminal enters a connected state in the second network, and the third indication information is used to indicate that the terminal is redirected or switched to the second network; Among them, the first core network device and the first access network device belong to the first network.

32. A communication device, characterized in that: include: A second sending module is used to send a third message to the first core network device, where the third message is used to request the first core network device to trigger the terminal to enter a connected state in the second network; The first core network device belongs to the first network, and the second core network device belongs to the second network.

33. A terminal, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the communication method according to any one of claims 1 to 8 are implemented.

34. A network side device, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the communication method as described in any one of claims 9 to 23, or implements the steps of the communication method as described in any one of claims 24 to 29.

35. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the steps of the communication method as described in any one of claims 1 to 8, or implements the steps of the communication method as described in any one of claims 9 to 23, or implements the steps of the communication method as described in any one of claims 24 to 29.

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