CN114501487B

CN114501487B - Communication transfer method, terminal and network equipment

Info

Publication number: CN114501487B
Application number: CN202011271000.7A
Authority: CN
Inventors: 谢振华; 柯小婉; 杨晓东
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2024-06-04
Anticipated expiration: 2040-11-13
Also published as: CN114501487A; WO2022100640A1

Abstract

The application discloses a communication transfer method, a terminal and network side equipment, and belongs to the technical field of wireless communication. The method comprises the following steps: the first terminal sends a first communication transfer instruction to a core network function; and/or transmitting the target transfer information to the second terminal.

Description

Communication transfer method, terminal and network equipment

Technical Field

The application belongs to the technical field of wireless communication, and particularly relates to a communication transfer method, a terminal and network side equipment.

Background

In the related art, during the process of using a user terminal such as a smart phone, for example, playing video, playing music, working online, etc., if a new service such as an audio-video call is entered, the currently used application (such as video playing, music playing, etc.) of the user is interrupted, which affects the user experience.

Disclosure of Invention

The embodiment of the application provides a communication transfer method, a terminal and network side equipment, which can solve the problem of terminal application interruption caused by new audio and video access and improve user experience.

In a first aspect, a method for communication transfer is provided, performed by a first terminal, the method comprising: sending a first communication transfer instruction to a core network function; and/or transmitting the target transfer information to the second terminal.

In a second aspect, there is provided a method of communication transfer, performed by a second terminal, the method comprising: sending the second user identification and the first transfer information to a core network function; the first transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing QoS flow identification of the transfer; a service data matching rule for allowing the transfer service; token information for transfer verification.

In a third aspect, a communication transfer method is provided, performed by a first core network function, the method comprising: receiving a second user identification and first transfer information sent by a second terminal; transmitting the second user identification and second transfer information to a second core network function; wherein the first transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing transfer of the identity of the QoS flow; a service data matching rule for allowing the transfer service; token information for transfer verification; the second transfer information includes at least one of: the first user identification; an identification of the allowed transfer session; an identification of the allowed transfer QoS flow; and the service data allowing the transfer of the service matches the rule.

In a fourth aspect, a communication transfer method is provided, performed by a second core network function, the method comprising: receiving a second user identification and second transfer information; indicating a third core network function to forward target communication data to a second terminal based on the second transfer information, wherein the target communication data is determined according to the second transfer information; the second transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing transfer of the identity of the QoS flow; the traffic data of the transfer traffic is allowed to match the rules.

In a fifth aspect, there is provided an apparatus for communication transfer, the apparatus comprising: a first sending module, configured to send a first communication transfer instruction to a core network function; and/or transmitting the target transfer information to the second terminal.

In a sixth aspect, there is provided an apparatus for communication transfer, the apparatus comprising: the second sending module is used for sending the second user identification and the first transfer information to the core network function; the first transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing QoS flow identification of the transfer; a service data matching rule for allowing the transfer service; token information for transfer verification.

In a seventh aspect, there is provided a communication transfer apparatus, comprising: the first receiving module is used for receiving a second user identification and first transfer information sent by the second terminal; a third sending module, configured to send the second user identifier and second transfer information to a second core network function; wherein the first transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing transfer of the identity of the QoS flow; a service data matching rule for allowing the transfer service; token information for transfer verification; the second transfer information includes at least one of: the first user identification;

An identification of the allowed transfer session; an identification of the allowed transfer QoS flow; and the service data allowing the transfer of the service matches the rule.

In an eighth aspect, there is provided a communication transfer apparatus, the apparatus comprising: the second receiving module is used for receiving a second user identifier and second transfer information; the indication module is used for indicating a third core network function to forward target communication data to a second terminal based on the second transfer information, and the target communication data is determined according to the second transfer information; the second transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing transfer of the identity of the QoS flow; the traffic data of the transfer traffic is allowed to match the rules.

In a ninth aspect, there is provided a terminal comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first or second aspect.

In a tenth aspect, there is provided a network side device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the third or fourth aspect.

In an eleventh aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method as described in the first aspect, or performs the steps of the method as described in the second aspect, or performs the steps of the method as described in the third aspect, or performs the steps of the method as described in the fourth aspect.

In a twelfth aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to run a network side device program or instructions, to implement the steps of the method according to the first aspect, or to implement the steps of the method according to the second aspect, or to implement the steps of the method according to the third aspect, or to implement the steps of the method according to the fourth aspect.

In a thirteenth aspect, there is provided a computer program product comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first aspect or implementing the steps of the method according to the second aspect or implementing the steps of the method according to the third aspect or implementing the steps of the method according to the fourth aspect.

In the embodiment of the application, a first terminal transmits a first communication transfer instruction to a core network function; and/or, the target transfer information is sent to the second terminal, so that the core network function forwards the communication data corresponding to the first communication transfer instruction or the target transfer information to the second terminal, thereby avoiding the problem of terminal application interruption caused by the existence of new audio and video access and effectively improving user experience.

Drawings

Fig. 1 is a block diagram of a wireless communication system provided in an exemplary embodiment of the present application.

Fig. 2 is a flow chart of a method for communication transfer according to an exemplary embodiment of the present application.

Fig. 3 is a flow chart of a method for communication transfer according to another exemplary embodiment of the present application.

Fig. 4 is a flow chart of a method for communication transfer according to still another exemplary embodiment of the present application.

Fig. 5 is a flow chart of a method for communication transfer according to still another exemplary embodiment of the present application.

Fig. 6 is a flow chart of a method for communication transfer according to still another exemplary embodiment of the present application.

Fig. 7 is a flow chart of a method for communication transfer according to still another exemplary embodiment of the present application.

Fig. 8a is a schematic diagram of an interaction flow for communication transfer provided by an exemplary embodiment of the present application.

Fig. 8b is a schematic diagram of an interactive flow of communication transfer provided by another exemplary embodiment of the present application.

Fig. 8c is a schematic diagram of a user plane data flow model according to an exemplary embodiment of the present application.

Fig. 9 is a block diagram of an apparatus for communication transfer provided by an exemplary embodiment of the present application.

Fig. 10 is a block diagram of an apparatus for communication transfer provided by another exemplary embodiment of the present application.

Fig. 11 is a block diagram of an apparatus for communication transfer provided by yet another exemplary embodiment of the present application.

Fig. 12 is a block diagram of an apparatus for communication transfer provided by yet another exemplary embodiment of the present application.

Fig. 13 is a block diagram of a terminal provided in an exemplary embodiment of the present application.

Fig. 14 is a block diagram of a network side device according to an exemplary embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate, such that embodiments of the application may be practiced otherwise than as specifically illustrated and described herein, and that the "first" and "second" distinguishing between objects generally being of the same type, and not necessarily limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. However, the following description describes a New Radio (NR) system for exemplary purposes, and NR terminology is used in much of the following description, although these techniques may also be applied to applications other than NR system applications, such as the 6 th Generation (6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a terminal device or a User Equipment (UE), and the terminal 11 may be a terminal-side device such as a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer) or a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an ultra-Mobile Personal Computer (ultra-Mobile Personal Computer, UMPC), a Mobile internet device (Mobile INTERNET DEVICE, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), and the wearable device includes: a bracelet, earphone, glasses, etc. 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 be a base station or a core network, where the base station may be called a node B, an evolved node B, an access Point, 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 node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access Point, a WiFi node, a transmission and reception Point (TRANSMITTING RECEIVING Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that, in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The technical scheme provided by the embodiment of the application is described in detail through specific embodiments and application scenes thereof by combining the accompanying drawings.

As shown in fig. 2, a flowchart of a method 200 for transferring communications according to an exemplary embodiment of the present application is provided, where the method 200 may be, but is not limited to being, performed by a first terminal, and in particular may be performed by software and/or hardware installed in the first terminal, and the method may include at least the following steps.

S210, sending a first communication transfer instruction to a core network function; and/or transmitting the target transfer information to the second terminal.

The core network functions may be, but are not limited to, access and mobility management functions (ACCESS AND Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane management functions (User Plane Function, UPF), etc. The first communication transfer instruction is used for indicating service related information that a core network function needs to be transferred, and correspondingly, the first transfer instruction can carry service related information that needs to be transferred, such as terminal identification information indicating which protocol data units (Protocol Data Unit, PDU) sessions can be transferred and indicating which terminals can transfer the PDU sessions, etc.

As one possible implementation manner, the first communication transfer instruction may carry at least one of the following (1) - (5).

(1) And a permission transfer instruction (IuT instruction) for instructing the core network function to perform a transfer operation, such as transferring communication data sent to the first terminal to the second terminal, so as to avoid interrupting the service being started by the first terminal, such as video playing, music playing, and the like.

(2) And the identification of the allowed transfer session, such as IuT session, etc., which is used for bearing the service needing to be transferred, etc.

(3) Allowing the transfer of the identity of the quality of service (Quality of Service, qoS) flow.

(4) And allowing the business data of the transfer business to match the rule, wherein the business data match the rule is used for determining/filtering the communication data needing to be transferred, such as communication data corresponding to unimportant incoming calls, and the like.

(5) Transferring authorization information. The transfer authorization information may include one or more user identifiers, where the one or more user identifiers at least include a first user identifier corresponding to the first terminal allowed to be transferred and/or a second user identifier corresponding to the second terminal allowed to accept transfer.

In one implementation, the first communication transfer instruction may be sent when the first terminal requests to establish a PDU session from the core network function, or may be carried in a PDU session establishment (PDU Session Establishment) message and sent to the core network function. It is understood that the PDU session is used for transmitting data between the first terminal and the core network.

The target transfer information is used for indicating service related information that the second terminal needs to transfer, and enabling the second terminal to initiate a communication transfer flow to a core network function based on the target transfer information. The target transfer information may be sent by the first terminal to the second terminal, or may be fed back to the second terminal after the first terminal receives the service information request sent by the second terminal, which is not limited in this embodiment.

The target transfer information may include at least one of the following (1) - (7), for example.

(1) A first user identification.

(2) Application (Application) information allowing transfer of services is used for the second terminal to start an Application program corresponding to the Application information and used for receiving the transfer information.

(3) Allowing transfer of cookie information corresponding to the service;

(4) Allowing the identification of the transfer session.

(5) The identification of the QoS flows that are allowed to be transferred.

(6) Traffic data matching rules that allow traffic to be diverted, such as flow information that requires a diversion operation, typically include information on source address, source port, destination address, destination port, protocol type, etc.

(7) Token information for transfer verification. The token information may be generated based on a secret key shared between the first terminal and the core network function, or may be generated based on a secret key of the first terminal, which is not limited in this embodiment.

In one implementation manner, data (such as target service information) transmission may be implemented between the first terminal and the second terminal based on close-range communication, for example, sidelink technology, wifi technology, bluetooth technology, and the like.

Based on the foregoing description, a communication transfer flow is briefly described below.

When a user watches a video through a first terminal such as a mobile phone, the user does not want to interrupt the video playing by a non-important call, and then the mobile phone receives an IMS call request, and can not ring the non-important call according to a call filtering rule, but requests a second terminal (such as a watch and the like) to divide a user plane of a telephone service on the watch, and answer the call through the watch ring, so that the requirement of application synchronization is met, but the requirement can be met through a short-distance communication relay IMS process simply, and at the moment, the important phone rings the watch of the mobile phone, and the non-important phone rings only the watch, so that the terminal use experience of the user can be effectively ensured.

In the foregoing embodiment, the first terminal transmits the first communication transfer instruction to the core network function; and/or the first terminal sends the target transfer information to the second terminal, so that the core network function forwards the communication data corresponding to the first communication transfer instruction or the target transfer information to the second terminal, thereby avoiding the problem of interruption of current terminal application on the first terminal caused by the existence of new audio/video access and effectively improving user experience.

As shown in fig. 3, a flowchart of a method 300 for transferring communications according to an exemplary embodiment of the present application is provided, where the method 300 may be, but is not limited to being, performed by a second terminal, and in particular may be performed by software and/or hardware installed in the second terminal, and the method 300 may include at least the following steps.

And S310, sending the second user identification and the first transfer information to the core network function.

Wherein the core network function may be, but is not limited to AMF, SMF, UPF, etc. The second user identifier may be an identifier of a second terminal that receives the communication transfer, and the first transfer information is used to instruct the core network function to transfer the service that needs to be transferred on the first terminal to the second terminal, where in this embodiment, the first transfer information includes at least one of the following (1) - (5).

(1) The first user identification is a user identification corresponding to the first terminal.

(2) Allowing the identification of the transfer session.

(3) Allowing for QoS flow identification of the transfer.

(4) The traffic data of the transfer traffic is allowed to match the rules.

(5) Token information for transfer verification.

The detailed descriptions of (1) - (5) may refer to the related descriptions in S210, and are not repeated here.

It should be noted that, the first terminal and the second terminal may belong to the same AMF, or may belong to different AMFs, such as AMF1 and AMF2, and then the implementation process of S310 may include: and the second terminal sends the second user identification and the first transfer information to the AMF2, and the AMF2 forwards the second user identification and the first transfer information to other functions in the core network functions so as to transfer the service to be transferred on the first terminal to the first terminal.

In addition, when the second terminal sends the first transfer information to the core network function, the second terminal may also send a PDU session establishment message or a PDU session activation message to the core network function, for example, send a Service Request message or PDU Session Establishment message to establish a PDU session, so as to implement data transmission between the second terminal and the core network, for example, communication data to be transferred, and so on.

In this embodiment, the second terminal forwards the second user identifier and the first transfer information to the core network function, so that the core network function forwards the communication data corresponding to the first transfer information and the second user identifier to the second terminal, thereby avoiding the problem of terminal application interruption caused by new audio/video access, and effectively improving user experience.

As shown in fig. 4, a flowchart of a method 400 for transferring communications according to an exemplary embodiment of the present application is provided, where the method 400 may be, but is not limited to being, performed by a second terminal, and in particular may be performed by software and/or hardware installed in the second terminal, and the method may include at least the following steps.

S410, receiving target transfer information sent by the first terminal.

Wherein the target transfer information includes at least one of the following (1) - (7).

(1) A first user identification;

(2) Application information allowing transfer of the service;

(3) Allowing transfer of cookie information corresponding to the service;

(4) An identification of a permitted transfer session;

(5) Allowing transfer of the identity of the QoS flow;

(6) A service data matching rule for allowing the transfer service;

(7) Token information for transfer verification.

The detailed description of the target transfer information can be referred to the related description in S210, and the detailed description is omitted herein to avoid repetition.

S420, the second user identification and the first transfer information are sent to the core network function.

For the specific implementation process in S420, reference may be made to the foregoing detailed description of S310, and in order to avoid repetition, the detailed description is omitted here. In addition, it is understood that the first transfer information may be determined based on the target transfer information, or may be determined based on pre-configured transfer information, which is not limited herein.

In this embodiment, the second terminal sends the second user identifier and the first transfer information to the core network function based on the target transfer information sent by the first terminal, so that the reliable performance of the communication transfer flow can be further ensured.

As shown in fig. 5, a flowchart of a method 500 for transferring communications according to an exemplary embodiment of the present application, the method 500 may be, but is not limited to being, performed by a first core network function, which may be, but is not limited to, an AMF, etc., and the method 500 may include at least the following steps.

S510, receiving a second user identification and first transfer information sent by a second terminal.

Wherein the first transfer information includes at least one of the following (1) - (5).

(1) The first user identification is a user identification corresponding to the first terminal;

(2) Allowing the identification of the transfer session.

(3) Allowing transfer of the identity of the QoS flow.

(4) The traffic data of the transfer traffic is allowed to match the rules.

(5) Token information for transfer verification.

The first transfer information may refer to the related description in S310, and will not be described herein.

And S520, the second user identification and the second transfer information are sent to a second core network function.

The second core network function may be, but is not limited to, SMF, etc., and in this embodiment, the second transfer information is used to instruct the second core network function (such as SMF, etc.) to forward the communication data corresponding to the second transfer to the second terminal, where in this embodiment, the second transfer information includes at least one of the following (1) - (4).

(1) The first user identification.

(2) And the identification of the allowed transfer session.

(3) The identification of the allowed transfer QoS flow.

(4) And the service data allowing the transfer of the service matches the rule.

In this embodiment, when the first core network function receives the second user identifier and the first transfer information, the first core network function sends the second transfer information and the second user identifier to the second core network function, so as to instruct the second core network function to forward the communication data corresponding to the second transfer to the second terminal, thereby avoiding the problem of terminal application interruption caused by the existence of new audio and video access, and effectively improving user experience.

As shown in fig. 6, a flowchart of a method 600 for transferring communications according to an exemplary embodiment of the present application, the method 600 may be performed by, but not limited to, a first core network function, which may be, but not limited to, an AMF, etc., and the method 600 may include at least the following steps.

S610, receiving a second user identification and first transfer information sent by a second terminal.

For the specific implementation of S610, reference may be made to the description of S510, which is not repeated here,

And S620, sending the second transfer information to a second core network function under the condition that transfer is allowed.

Wherein, to ensure the reliability of the transfer process, after receiving the first transfer information, the first core network function may verify whether the transfer needs to be allowed based on the first transfer information and the context corresponding to the first user identifier, and in a possible implementation manner, may determine that the transfer needs to be allowed if at least one of the following (1) - (7) is satisfied.

(1) The subscription information of the first user identifier meets preset subscription information. The predetermined subscription information may be configured as a subscription and stored in the first core network function, and the type of the predetermined subscription information is not limited herein.

(2) And the session type corresponding to the session identifier in the first transfer information meets the preset session type.

(3) Verifying success of the token information based on the context of the first user identification;

(4) The context corresponding to the first user identifier contains an allowed transfer instruction.

(5) And the identifier of the allowed transfer session contained in the context corresponding to the first user identifier contains the session identifier in the second transfer information.

(6) And the identifier of the allowed transfer QoS flow contained in the context corresponding to the first user identifier contains the QoS flow identifier in the second transfer information.

(7) And the matching rule of the business data allowed to be transferred, which is contained in the context corresponding to the first user identifier, covers the business data matching rule in the second transfer information.

It will be appreciated that in the actual verification process, the constitution may be based on any one of the foregoing (1) to (7), but is not limited thereto. In addition, in case at least one of the above is not satisfied, it may be determined that transfer is not allowed, and the check result is fed back to the second terminal.

In one implementation, assuming that the first core network function is AMF and the second core network function is SMF, if the first terminal and the second terminal belong to different first core network functions, that is, if the first terminal corresponds to the core network functions AMF1 and SMF1 and the second terminal corresponds to the core network functions AMF2 and SMF2, if the AMF2 receives the second user identifier and the first transfer information sent by the second terminal, the AMF2 may send transfer check information to AMF1, where AMF1 performs the check based on the foregoing (1) - (7), if the check passes (allows the transfer), AMF1 feeds back a context corresponding to the first user identifier to AMF2 (or AMF1 does not perform the check, directly feeds back a context corresponding to the first user identifier to AMF 2), and AMF2 sends second transfer information to SMF2, so as to implement the communication data transfer between the first terminal and the second terminal through the interaction between SMF2 and SMF 1.

In this embodiment, the first core network function can further improve the reliability of the communication transfer process by checking the transfer process.

As shown in fig. 7, a flowchart of a method 700 for transferring communications according to an exemplary embodiment of the present application is provided, where the method 700 may be performed by, but not limited to, a second core network function, which may be, but not limited to, SMF, etc., and the method 700 may include at least the following steps.

S710, receiving a second user identification and second transfer information.

Wherein the second transfer information includes at least one of the following (1) - (4).

(2) Allowing the identification of the transfer session.

(3) Allowing transfer of the identity of the QoS flow.

(4) The traffic data of the transfer traffic is allowed to match the rules.

The detailed description of the second transfer information may refer to the related description in S520, and is not repeated here.

In one implementation, assuming that the first core network function is AMF and the second core network function is SMF, in the case that the first terminal and the second terminal belong to different first core network functions, that is, the first terminal corresponds to AMF1 and SMF1, and the second terminal corresponds to AMF2 and SMF2, the implementation process of S710 may include that SMF2 receives the second subscriber identity and the second transfer information sent by AMF2 or SMF 1.

And S720, indicating a third core network function to forward the target communication data to the second terminal based on the second transfer information.

The third core network function may be a UPF or the like, and the target communication data is determined according to the second transfer information.

As a possible implementation manner, the second core network function indicates at least one of the following through S720:

(1) And indicating the third core network function to mark the data flow corresponding to the first user identifier, wherein the mark is used for indicating to send the target communication data to the second terminal.

(2) And indicating the third core network function to mark the data flow corresponding to the identifier of the allowed transfer session, wherein the mark is used for indicating to send the target communication data to the second terminal.

(3) And indicating the third core network function to mark the data flow corresponding to the identifier of the allowed transfer QoS flow, wherein the mark is used for indicating the target communication data to be sent to the second terminal.

(4) And indicating the third core network function mark to meet the data flow of the service data matching rule, wherein the mark is used for indicating to send the target communication data to the second terminal.

In this embodiment, the second core network function instructs the third core network function to forward the target communication data corresponding to the second transfer information to the second terminal according to the received second user identifier and the second transfer information, so that the problem of terminal application interruption caused by the existence of new audio and video can be avoided, and user experience is effectively improved.

Based on the foregoing description of the method of communication transfer, the following describes the interaction flow involved in the communication transfer process in connection with fig. 8a, 8b, 8 c.

As shown in fig. 8a, assuming that the core network functions include a first core network function (such as AMF), a second core network function (such as SMF), and a third core network function (such as UPF, etc.), the first terminal (UE 1) and the second terminal (UE 2) belong to the same AMF, an interaction procedure involved in the communication transfer procedure includes the following steps.

(1) The UE1 sends a PDU session establishment message to the AMF, and the AMF forwards a PDU session establishment request to the SMF to establish a PDU session between the UE1 and the core network, and the procedure for establishing the PDU session is not described herein;

(2) UE1 sends a first communication transfer indication (i.e., iuT indication) to the AMF and sends target transfer information to the UE2;

(3) The UE2 sends a second user identification and first transfer information to the AMF, wherein the first transfer information is determined according to the target transfer information;

in addition, UE2 may also send a PDU session setup message or a PDU session activation message to the AMF;

(4) The AMF checks whether transfer is allowed;

(5) In case transfer is allowed, the AMF sends a second user identification and second transfer information to the SMF.

(6) The SMF instructs the UPF to forward the target communication data to the UE2 based on the second transfer information.

(7) The UPF forwards the target communication data to the UE2.

It should be noted that the communication transfer process may include, but is not limited to, all or part of the steps in (1) - (7), and further, the detailed descriptions of (1) - (7) may be referred to the detailed descriptions of the method embodiments, so that the detailed descriptions are omitted here for avoiding repetition.

As shown in fig. 8b, assuming that the core network functions include a first core network function (such as AMF), a second core network function (such as SMF), and a third core network function (such as UPF), the first terminal (UE 1) and the second terminal (UE 2) are affiliated to different AMFs, that is, the first terminal corresponds to AMF1, SMF2, UPF1, and the second terminal corresponds to AMF2, SMF2, UPF2, the interaction procedure involved in the communication transfer procedure may include the following steps.

(1) UE1 sends a PDU session setup message to AMF1 and sends a first communication transfer indication (i.e., iuT indication) to AMF1, AMF1 forwards the PDU session setup message to SMF1, and SMF1 creates a PDU session with UE 1;

(2) UE1 sends target transfer information to UE2;

(3) The UE2 sends a PDU session establishment request or a PDU session activation request to the AMF2, and the SMF2 creates a PDU session or activates the PDU session;

(4) The UE2 sends the first transfer information and the second user identification to the AMF2 according to the target transfer information.

(5) AMF2 sends a transfer check request to AMF1 when receiving the second user identification and the first transfer information.

(6) AMF1 feeds context back to AMF2; or alternatively

AMF1 checks the transfer check request, and feeds back a context to AMF2 in the case that the check passes (i.e. transfer is allowed);

(7) AMF2 sends a second user identification and second transfer information to SMF2;

(8) Under the condition that the SMF2 receives the second user identification and the second transfer information sent by the AMF2, the SMF2 and the UPF2 establish an uplink transmission channel;

(9) SMF2 sends communication transfer information to SMF1;

(10) Under the condition that the SMF1 receives an uplink receiving address corresponding to the UPF2 and communication transfer information, the SMF1 establishes a data uplink channel with the UPF1 and sends a resource transfer instruction to the UPF 1;

(11) SMF1 sends an uplink receiving address corresponding to UPF1 to SMF2 so as to establish an uplink channel of UE 2;

(12) The AMF2 performs data interaction with the UE2 through the base station system to acquire a downlink receiving address of the base station system to which the UE2 belongs, and sends the downlink receiving address of the base station system to the SMF2;

(13) SMF2 interacts with UPF2 to establish a downlink channel based on a downlink receiving address of the base station system;

(14) SMF2 sends a downlink receiving address corresponding to UPF2 to SMF1;

(15) The SMF1 sends the transfer data to the UPF1 when the communication data to be transferred is identified according to the transfer information;

(16) UPF1 forward target communication data based on UPF2 downlink receiving address to UPF2

(17) UPF2 forwards the transfer data to UE2 based on the downlink receiving address of the base station system to which the UE2 belongs;

(18) After the transfer is completed, the SMF1 sends a transfer completion message to the SMF2;

(19) SMF2 sends a transfer completion message to AMF 2;

(20) AMF2 after receiving the transfer completion acknowledgement message from SMF2, AMF2 notifies AMF1 of the completion of the transfer;

(21) AMF1 may release resources for transmitting transferred data, such as release IuT session resources or modify IuT session resources.

It should be noted that the flow of the communication transfer may include, but is not limited to, all or part of the steps in (1) to (21), and further, the detailed description of (1) to (21) may refer to the detailed description in the foregoing method embodiments, which is not repeated herein.

Further, referring to fig. 8c in combination, in the communication transfer interaction procedure (including the transfer procedure and after the transfer is completed) given in the foregoing method embodiments, the application service (Application Server, AS) always considers that the terminal UE1 interacts with the subscriber 1 (USIM card owner on UE 1) (IP address is the IP address of UE 1), but actually interacts with the AS11 … … AS1n is UE2 (network is distinguished by a UPF of PDU session of UE1 or UE2 to tunnel of gNB1, or by PDU session of UE 1), and interacts with the AS21 … … AS2m is UE2 (network is distinguished by a UPF of PDU session of UE1 or UE2 to tunnel of gNB2, or by PDU session of UE 2), while UE2 may have its own card, and the owner of the card on UE2 (subscriber 2) may perform its own service using UE2 (not related to the present application). On the user plane, for two UEs (or multiple UEs), there may be two PDU sessions respectively, or one PDU session has two tunnels to different gnbs respectively. There may be one more UPF between the UPF and the gNB, i.e. the tunnel may be piecewise connected. In particular cases, gNB1 and gNB2 are the same gNB.

Note that A1 in fig. 8c represents a data radio bearer (Data Radio Bearer, DRBs) corresponding to UE1, A2 represents DR Bs corresponding to UE2, and B1 and B2 represent PDU session tunnels (tunnels).

It should be noted that, in the method 200-700 for transferring a communication device provided in the embodiment of the present application, the execution subject may be a device for transferring a communication device, or a control module for executing the method for transferring a communication device in the device for transferring a communication device. In the following section, the embodiment of the present application will be described with reference to a method for executing a communication device transfer by a communication device transfer apparatus as an example.

As shown in fig. 9, a block diagram of an apparatus 900 for communication transfer according to an exemplary embodiment of the present application includes a first sending module 910 configured to send a first communication transfer instruction to a core network function; and/or transmitting the target transfer information to the second terminal.

As a possible implementation manner of the present application, the first communication transfer instruction carries at least one of the following: allowing a transfer indication; an identification of a permitted transfer session; allowing transfer of the identity of the QoS flow; a service data matching rule for allowing the transfer service; transferring authorization information.

As a possible implementation manner in the present application, the transfer authorization information includes one or more user identifiers, where the one or more user identifiers at least include a first user identifier corresponding to the first terminal allowed to be transferred and/or a second user identifier corresponding to a second terminal allowed to accept transfer.

As a possible implementation manner of the present application, the target transfer information includes at least one of the following: a first user identification; application information allowing transfer of the service; allowing transfer of cookie information corresponding to the service; an identification of a permitted transfer session; an identification of QoS flows that allow transfer; a service data matching rule for allowing the transfer service; token information for transfer verification.

In the foregoing embodiment, the first terminal transmits the first communication transfer instruction to the core network function; and/or, the target transfer information is sent to the second terminal, so that the core network function forwards the communication data corresponding to the first communication transfer instruction or the target transfer information to the second terminal, thereby avoiding the problem of terminal application interruption caused by the existence of new audio and video access and effectively improving user experience.

As shown in fig. 10, a block diagram of an apparatus 1000 for communication transfer according to an exemplary embodiment of the present application includes a second sending module 1010 configured to send a second user identifier and first transfer information to a core network function; the first transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing QoS flow identification of the transfer; a service data matching rule for allowing the transfer service; token information for transfer verification.

As a possible implementation manner of the present application, the apparatus further includes: a first receiving module 1020, configured to receive target transfer information sent by the first terminal; the target transfer information includes at least one of: a first user identification; application information allowing transfer of the service; allowing transfer of cookie information corresponding to the service; an identification of a permitted transfer session; allowing transfer of the identity of the QoS flow; a service data matching rule for allowing the transfer service; token information for transfer verification.

As shown in fig. 11, a block diagram of an apparatus for transferring communication according to an exemplary embodiment of the present application includes a second receiving module 1110, configured to receive a second user identifier and first transfer information sent by a second terminal; a third sending module 1120, configured to send the second user identifier and the second transfer information to a second core network function; wherein the first transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing transfer of the identity of the QoS flow; a service data matching rule for allowing the transfer service; token information for transfer verification;

The second transfer information includes at least one of: the first user identification; an identification of the allowed transfer session; an identification of the allowed transfer QoS flow; and the service data allowing the transfer of the service matches the rule.

As a possible implementation manner of the present application, the apparatus further includes: the third sending module is configured to perform the step of sending the second transfer information to the second core network function when the transfer is allowed.

As a possible implementation of the present application, the determination of the allowable transition is made if at least one of the following is satisfied: the subscription information of the first user identifier meets preset subscription information; the session type corresponding to the session identifier in the first transfer information meets the preset session type; verifying success of the token information based on the context of the first user identification; the context corresponding to the first user identifier comprises an allowed transfer instruction; the identifier of the allowed transfer session contained in the context corresponding to the first user identifier contains the session identifier in the second transfer information; the identifier of the allowed transfer QoS flow contained in the context corresponding to the first user identifier contains the QoS flow identifier in the second transfer information; and the matching rule of the business data allowed to be transferred, which is contained in the context corresponding to the first user identifier, covers the business data matching rule in the second transfer information.

As shown in fig. 12, a block diagram of an apparatus 1200 for communication transfer according to an exemplary embodiment of the present application is provided, where the apparatus 1200 for communication transfer includes a third receiving module 1210 configured to receive a second user identifier and second transfer information; an indication module 1220, configured to instruct, based on the second transfer information, a third core network function to forward target communication data to a second terminal, where the target communication data is determined according to the second transfer information; the second transfer information includes at least one of: the first user identification is a user identification corresponding to the first terminal; an identification of a permitted transfer session; allowing transfer of the identity of the QoS flow; the traffic data of the transfer traffic is allowed to match the rules.

As a possible implementation manner of the present application, the indication module is configured to at least one of the following: instructing the third core network function to mark a data stream corresponding to the first user identifier, where the mark is used to instruct to send the target communication data to the second terminal; instructing the third core network function to mark a data flow corresponding to the identifier of the session allowed to be transferred, wherein the mark is used for instructing the target communication data to be sent to the second terminal; instructing the third core network function to mark a data flow corresponding to the identifier of the allowed transfer QoS flow, where the mark is used to instruct to send the target communication data to the second terminal; and indicating the third core network function mark to meet the data flow of the service data matching rule, wherein the mark is used for indicating to send the target communication data to the second terminal.

The device for communication transfer in the foregoing embodiments may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device may be a mobile terminal or a non-mobile terminal. By way of example, mobile terminals may include, but are not limited to, the types of terminals 11 listed above, and non-mobile terminals may be servers, network attached storage (Network Attached Storage, NAS), personal computers (personal computer, PCs), televisions (TVs), teller machines, self-service machines, etc., and embodiments of the present application are not limited in particular.

The device for transferring communication in the embodiment of the present application may be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, and the embodiment of the present application is not limited specifically.

The device for transferring communication provided by the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 2 to fig. 7, fig. 8a, fig. 8b, and fig. 8c, and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

Fig. 13 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1300 includes, but is not limited to: radio frequency unit 1301, network module 1302, audio output unit 1303, input unit 1304, sensor 1305, display unit 1306, user input unit 1307, interface unit 1308, memory 1309, and processor 1310.

Those skilled in the art will appreciate that the terminal 1300 may further include a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 1310 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system. The terminal structure shown in fig. 13 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1304 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 13042, the graphics processor 13041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1307 includes a touch panel 13071 and other input devices 13072. Touch panel 13071, also referred to as a touch screen. The touch panel 13071 may include two parts, a touch detection device and a touch controller. Other input devices 13072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 1301 processes the downlink data with the processor 1310; in addition, the uplink data is sent to the network side equipment. Typically, the radio unit 1301 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1309 may be used to store software programs or instructions and various data. The memory 1309 may mainly include a storage program or instruction area that may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and a storage data area. In addition, the Memory 1309 may include a high-speed random access Memory, and may also include a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable EPROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

The processor 1310 may include one or more processing units; alternatively, processor 1310 may integrate an application processor that primarily processes operating systems, user interfaces, and applications or instructions, etc., with a modem processor that primarily processes wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1310.

The processor 1310 is configured to invoke instructions or programs in the memory 1309 to execute the methods executed by the modules shown in fig. 9 or fig. 10, and achieve the same technical effects, so that repetition is avoided and thus a detailed description is omitted.

As shown in fig. 14, the embodiment of the present application further provides a network side device 140, where the network device 140 includes: antenna 141, radio frequency device 142, baseband device 143. The antenna 141 is connected to the radio frequency device 142. In the uplink direction, the radio frequency device 142 receives information via the antenna 141, and transmits the received information to the baseband device 143 for processing. In the downlink direction, the baseband device 143 processes information to be transmitted, and transmits the processed information to the radio frequency device 142, and the radio frequency device 142 processes the received information and transmits the processed information through the antenna 141.

The above-described band processing means may be located in the baseband apparatus 143, and the method performed by the network-side device in the above embodiment may be implemented in the baseband apparatus 143, where the baseband apparatus 143 includes the processor 144 and the memory 145.

The baseband device 143 may, for example, include at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 14, where one chip, for example, a processor 144, is connected to the memory 145 to invoke a program in the memory 145 to perform the network device operations shown in the above method embodiment.

The baseband device 143 may also include a network interface 146, such as a common public radio interface (common public radio interface, CPRI for short), for interacting with the radio frequency device 142.

Specifically, the network side device of the embodiment of the present application further includes: instructions or programs stored in the memory 145 and executable on the processor 144, the processor 144 invokes the instructions or programs in the memory 145 to perform the methods performed by the modules shown in fig. 11 or fig. 12, and achieve the same technical effects, and are not repeated here.

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above-mentioned communication transfer method embodiment, and can achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a network side equipment program or instruction, the processes of the communication transfer method embodiment can be realized, the same technical effects can be achieved, and the repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiment of the application further provides a computer program product, which comprises a processor, a memory, and a program or an instruction stored in the memory and capable of running on the processor, wherein the program or the instruction realizes each process of the above communication transfer method embodiment when being executed by the processor, and can achieve the same technical effect, and for avoiding repetition, the description is omitted here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method of communication transfer, performed by a first terminal, the method comprising:

a first communication diversion indication is sent to the core network function, and/or,

Transmitting target transfer information to a second terminal, so that the core network function forwards communication data corresponding to the first communication transfer instruction or the target transfer information to the second terminal;

The first communication transfer instruction and the target transfer information carry service data matching rules allowing the transfer of service, and the service data matching rules are used for determining or filtering communication data to be transferred.

2. The method of claim 1, wherein the first communication transfer indication further carries at least one of:

Allowing a transfer indication;

an identification of a permitted transfer session;

An identification allowing transfer of quality of service QoS flows;

transferring authorization information.

3. The method according to claim 2, wherein the transfer authorization information comprises one or more user identities, and the one or more user identities at least comprise a first user identity corresponding to the first terminal allowed to be transferred and/or a second user identity corresponding to a second terminal allowed to accept transfer.

4. The method of claim 1, wherein the target transfer information further comprises at least one of:

a first user identification;

application information allowing transfer of the service;

Allowing transfer of cookie information corresponding to the service;

an identification of a permitted transfer session;

An identification of quality of service QoS flows that allow transfer;

Token information for transfer verification.

5. A method of communication transfer, performed by a second terminal, the method comprising:

Transmitting a second user identifier and first transfer information to a core network function, wherein the first transfer information is used for indicating the core network function to transfer a service to be transferred on a first terminal to a second terminal;

the first transfer information includes a service data matching rule allowing transfer of a service, and at least one of the following:

The first user identification is a user identification corresponding to the first terminal;

an identification of a permitted transfer session;

quality of service QoS flow identification allowing transfer;

Token information for transfer verification;

The business data matching rule is used for determining or filtering communication data needing to be transferred.

6. The method of claim 5, wherein prior to sending the second subscriber identity and the first transfer information to the core network function, the method further comprises:

receiving target transfer information sent by the first terminal; the target transfer information includes at least one of:

a first user identification;

application information allowing transfer of the service;

Allowing transfer of cookie information corresponding to the service;

an identification of a permitted transfer session;

Allowing transfer of the identity of the QoS flow;

A service data matching rule for allowing the transfer service;

Token information for transfer verification.

7. A method of communication transfer performed by a first core network function, the method comprising:

Receiving a second user identifier and first transfer information sent by a second terminal, wherein the first transfer information is used for indicating a core network function to transfer a service to be transferred on a first terminal to the second terminal;

the second user identification and second transfer information are sent to a second core network function, and the second transfer information is used for indicating the second core network function to forward communication data corresponding to the second transfer information to the second terminal;

wherein the first transfer information includes a service data matching rule allowing transfer of a service, and at least one of the following:

an identification of a permitted transfer session;

An identification allowing transfer of quality of service QoS flows;

Token information for transfer verification;

The second transfer information includes the service data matching rule of the allowed transfer service, and at least one of the following is included:

the first user identification;

an identification of the allowed transfer session;

An identification of the allowed transfer QoS flow;

8. The method of claim 7, wherein the sending the second transfer information to a second core network function comprises:

and sending the second transfer information to a second core network function under the condition that the transfer is allowed.

9. The method of claim 8, wherein the determination to allow transfer is made if at least one of:

The subscription information of the first user identifier meets preset subscription information;

the session type corresponding to the session identifier in the first transfer information meets the preset session type;

Verifying success of the token information based on the context of the first user identification; the context corresponding to the first user identifier comprises an allowed transfer instruction;

the identifier of the allowed transfer session contained in the context corresponding to the first user identifier contains the session identifier in the second transfer information;

The identifier of the allowed transfer QoS flow contained in the context corresponding to the first user identifier contains the QoS flow identifier in the second transfer information;

and the matching rule of the business data allowed to be transferred, which is contained in the context corresponding to the first user identifier, covers the business data matching rule in the second transfer information.

10. A method of communication transfer performed by a second core network function, the method comprising:

Receiving a second user identifier and second transfer information, wherein the second user identifier and the second transfer information are sent to a second core network function by a first core network function when the second user identifier and the first transfer information are received, the first transfer information is used for indicating the core network function to transfer a service needing to be transferred on a first terminal to a second terminal, and the second transfer information is used for indicating the second core network function to transfer communication data corresponding to the second transfer information to the second terminal;

Indicating a third core network function to forward target communication data to a second terminal based on the second transfer information, wherein the target communication data is determined according to the second transfer information;

the second transfer information includes a service data matching rule allowing transfer of the service, and at least one of the following:

an identification of a permitted transfer session;

An identification allowing transfer of quality of service QoS flows;

11. The method of claim 10, wherein the indicating the third core network function to forward the target communication data to the second terminal based on the second transfer information comprises at least one of:

Instructing the third core network function to mark a data stream corresponding to the first user identifier, where the mark is used to instruct to send the target communication data to the second terminal;

Instructing the third core network function to mark a data flow corresponding to the identifier of the session allowed to be transferred, wherein the mark is used for instructing the target communication data to be sent to the second terminal;

Instructing the third core network function to mark a data flow corresponding to the identifier of the allowed transfer QoS flow, where the mark is used to instruct to send the target communication data to the second terminal;

And indicating the third core network function mark to meet the data flow of the service data matching rule, wherein the mark is used for indicating to send the target communication data to the second terminal.

12. An apparatus for communication transfer, the apparatus comprising:

A first sending module, configured to send a first communication transfer instruction to a core network function, and/or,

13. The apparatus of claim 12, wherein the first communication transfer indication further carries at least one of:

Allowing a transfer indication;

an identification of a permitted transfer session;

Allowing transfer of the identity of the QoS flow;

transferring authorization information.

14. The apparatus of claim 13, wherein the transfer authorization information comprises one or more user identities including at least a first user identity corresponding to a first terminal permitted to be transferred and/or a second user identity corresponding to a second terminal permitted to accept transfer.

15. The apparatus of claim 12, wherein the target transfer information further comprises at least one of:

a first user identification;

application information allowing transfer of the service;

Allowing transfer of cookie information corresponding to the service;

an identification of a permitted transfer session;

An identification of QoS flows that allow transfer;

Token information for transfer verification.

16. An apparatus for communication transfer, the apparatus comprising:

The second sending module is used for sending a second user identifier and first transfer information to the core network function, wherein the first transfer information is used for indicating the core network function to transfer the service needing to be transferred on the first terminal to the second terminal;

an identification of a permitted transfer session;

allowing QoS flow identification of the transfer;

Token information for transfer verification;

17. The apparatus of claim 16, wherein the apparatus further comprises:

the first receiving module is used for receiving the target transfer information sent by the first terminal; the target transfer information includes at least one of:

a first user identification;

application information allowing transfer of the service;

Allowing transfer of cookie information corresponding to the service;

an identification of a permitted transfer session;

Allowing transfer of the identity of the QoS flow;

A service data matching rule for allowing the transfer service;

Token information for transfer verification.

18. A communication transfer apparatus, the apparatus comprising:

The second receiving module is used for receiving a second user identifier and first transfer information sent by a second terminal, and the first transfer information is used for indicating a core network function to transfer a service needing to be transferred on a first terminal to the second terminal;

A third sending module, configured to send the second user identifier and second transfer information to a second core network function, where the second transfer information is used to instruct the second core network function to forward communication data corresponding to the second transfer information to the second terminal;

an identification of a permitted transfer session;

Allowing transfer of the identity of the QoS flow;

Token information for transfer verification;

the first user identification;

an identification of the allowed transfer session;

An identification of the allowed transfer QoS flow;

19. The apparatus of claim 18, wherein the apparatus further comprises:

The third sending module is configured to perform the step of sending the second transfer information to the second core network function when the transfer is allowed.

20. The apparatus of claim 19, wherein the determination to allow transfer is made if at least one of:

21. A communication transfer apparatus, the apparatus comprising:

The third receiving module is configured to receive a second user identifier and second transfer information, where the second user identifier and the second transfer information are sent by the first core network function to the second core network function when the second user identifier and the first transfer information are received, the first transfer information is used to instruct the core network function to transfer a service that needs to be transferred on the first terminal to the second terminal, and the second transfer information is used to instruct the second core network function to forward communication data corresponding to the second transfer information to the second terminal;

the indication module is used for indicating a third core network function to forward target communication data to a second terminal based on the second transfer information, and the target communication data is determined according to the second transfer information;

an identification of a permitted transfer session;

An identification allowing transfer of quality of service QoS flows;

22. The apparatus of claim 21, wherein the indication module is to at least one of:

23. A terminal comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method of communication transfer as claimed in any one of claims 1 to 4 or the steps of the method of communication transfer as claimed in any one of claims 5 to 6.

24. A network side device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method of communication transfer as claimed in any one of claims 7 to 9 or performs the steps of the method of communication transfer as claimed in any one of claims 10 to 11.

25. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the method of communication transfer according to any one of claims 1-4, or the steps of the method of communication transfer according to any one of claims 5 to 6, or the steps of the method of communication transfer according to any one of claims 7 to 9; or steps of a method of effecting a communication transfer as claimed in any one of claims 10 to 11.