CN117641611A

CN117641611A - Communication method, device, terminal and network equipment

Info

Publication number: CN117641611A
Application number: CN202210977274.0A
Authority: CN
Inventors: 陈宁宇; 刘亮; 徐晓东
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2024-03-01

Abstract

The application provides a communication method, a communication device, a communication terminal and network equipment. The method comprises the following steps: activating a mapping bearer according to an activation command of a second network node under the condition that a terminal receives a switching instruction sent by a first network node and/or the terminal meets a first condition; transmitting data to be transmitted on the first network node through the mapping bearer; wherein the mapped bearer is a mapping of the first bearer of the first network node in the second network node; the first network node is a network node of a first format and the second network node is a network node of a second format. According to the embodiment of the application, the terminal can transmit network data of one communication system, and the data transmission of the first network node can be ensured to be normally transmitted when the first network node is switched or a link failure and the like occur, so that the interruption of the data transmission is avoided.

Description

Communication method, device, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a communications method, an apparatus, a terminal, and a network device.

Background

In the prior art, the access of a terminal to networks of different systems includes two modes: mode one: the terminal is independently connected with the network of each system; mode two: the terminal uses dual connectivity to connect two communication modes simultaneously. For example: the prior art introduces a 6G network, shares a core network with a 5G network, and the 6G network supports more service types than the 5G network.

In the prior art, a terminal cannot transmit network data of one communication system, so that if a handover or a link failure occurs, the data may be lost.

Disclosure of Invention

The purpose of the application is to provide a communication method, a device, a terminal and network equipment, which solve the problem that the data loss is possibly caused by the conditions of switching or link failure and the like in the prior art.

To achieve the above object, an embodiment of the present application provides a communication method, which is applied to a terminal, including:

activating a mapping bearer according to an activation command of a second network node under the condition that a terminal receives a switching instruction sent by a first network node and/or the terminal meets a first condition;

transmitting data to be transmitted on the first network node through the mapping bearer;

wherein the mapped bearer is a mapping of a first bearer of the first network node in the second network node; the first network node is a network node of a first system, and the second network node is a network node of a second system.

Optionally, the first condition includes at least one of:

the terminal meets the switching condition of the conditional switching CHO;

And the connection link failure occurs between the terminal and the first network node.

Optionally, the method further comprises:

sending an activation request message of the mapping bearer to the second network node;

and/or the number of the groups of groups,

and sending the activation request message of the mapping bearer to the first network node, wherein the first network node is used for forwarding the activation request message to the second network node or the core network node.

Optionally, the foregoing further includes:

and receiving an activation command of the mapping bearer sent by the second network node.

Optionally, the activation request message includes at least one of the following information:

requesting an activated session identification;

requesting the identifier of the first bearer corresponding to the activated mapping bearer;

packet data convergence protocol (Packet Data Convergence Protocol, PDCP) status report;

PDCP Sequence Number (SN);

bit map.

Optionally, the activation command includes:

an activated session identification;

the activated mapped bearer corresponds to the identity of the first bearer.

Optionally, the transmitting the data to be transmitted on the first network node through the mapping bearer includes:

sending uplink data to the second network node through the mapping bearer, wherein the uplink data is data to be transmitted on the first network node;

And/or the number of the groups of groups,

and receiving downlink data sent by the second network node on the mapping bearer, wherein the downlink data is data to be transmitted on the first network node.

Optionally, the method further comprises:

transmitting a response message to the first network node and/or the second network node;

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

To achieve the above object, an embodiment of the present application provides a communication method, applied to a second network node, including:

establishing a mapping bearer according to a first bearer establishment message sent by a core network node;

Optionally, the first bearer setup message includes at least one of:

quality of service identifier (5G Quality of Service Identifier,5QI) information for the fifth generation mobile communication technology;

a session identifier;

And the bearer mapping identifier is used for indicating the identifier of the first bearer corresponding to the mapped bearer.

Optionally, the method further comprises:

receiving an activation request message of the mapping bearer;

the activation request message is used for requesting to activate the mapping bearer and transmitting data through the mapping bearer.

Optionally, the receiving the activation request message of the mapping bearer includes one of the following:

receiving the activation request message sent by the terminal;

receiving the activation request message sent by a first network node;

and receiving the activation request message sent by the core network node.

requesting an activated session identification;

PDCP status reporting;

PDCP SN；

bit map.

Optionally, before transmitting the data to be transmitted on the first network node over the mapping bearer, the method further comprises:

and sending the activation command of the mapping bearer to the terminal.

Optionally, the activation command includes:

an activated session identification;

the activated mapped bearer corresponds to the identity of the first bearer.

Optionally, the method further comprises:

receiving a response message sent by the terminal;

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

receiving uplink data sent by a terminal on the mapping bearer, wherein the uplink data is data to be transmitted on the first network node;

and/or the number of the groups of groups,

and sending downlink data to the terminal through the mapping bearer, wherein the downlink data is data to be transmitted on the first network node.

To achieve the above object, an embodiment of the present application further provides a communication method, which is applied to a core network node, including:

sending a first bearer establishment message to a second network node, and sending a second bearer establishment message to the first network node;

the second bearer establishment message is used for indicating the first network node to establish a first bearer; the first bearer establishment message is used for indicating the second network node to establish a mapping bearer, wherein the mapping bearer is the mapping of the first bearer of the first network node in the second network node;

The first network node is a network node of a first system, and the second network node is a network node of a second system.

Optionally, the first bearer setup message includes at least one of:

5QI information;

a session identifier;

Optionally, the second bearer setup message includes at least one of:

5QI information;

a session identifier;

and the bearer mapping information is used for indicating a mapping bearer corresponding to the first bearer.

To achieve the above object, an embodiment of the present application further provides a communication device, which is applied to a terminal, including:

the first processing module is used for activating the mapping bearer according to the activation command of the second network node under the condition that a switching instruction sent by the first network node is received and/or the terminal meets a first condition;

a second processing module, configured to transmit data to be transmitted on the first network node through the mapping bearer;

To achieve the above object, an embodiment of the present application further provides a communication device, applied to a second network node, including:

the third processing module is used for establishing a mapping bearer according to the first bearer establishment message sent by the core network node;

a fourth processing module, configured to transmit data to be transmitted on the first network node through the mapping bearer;

To achieve the above object, an embodiment of the present application further provides a communication device, applied to a core network node, including:

a fifth processing module, configured to send a first bearer establishment message to a second network node, and send a second bearer establishment message to the first network node;

To achieve the above object, embodiments of the present application further provide a terminal, including a processor and a transceiver;

the transceiver is used for: activating a mapping bearer according to an activation command of a second network node when a switching instruction sent by the first network node is received and/or the terminal meets a first condition;

the processor is configured to: transmitting data to be transmitted on the first network node through the mapping bearer;

To achieve the above object, embodiments of the present application further provide a network device, which may be a second network node, including a processor and a transceiver;

the processor is configured to: establishing a mapping bearer according to a first bearer establishment message sent by a core network node;

the processor is further configured to: transmitting data to be transmitted on the first network node through the mapping bearer;

To achieve the above object, embodiments of the present application further provide a network device, which may be a core network node, including a processor and a transceiver;

the transceiver is used for: sending a first bearer establishment message to a second network node, and sending a second bearer establishment message to the first network node;

To achieve the above object, embodiments of the present application further provide a readable storage medium having stored thereon a program or instructions which when executed by a processor implement the steps of the communication method described above.

The beneficial effects of the technical scheme of the application are as follows:

in the embodiment of the application, when a terminal receives a switching instruction sent by a first network node and/or the terminal meets a first condition, a mapping bearer is activated according to an activation command of a second network node; the data to be transmitted on the first network node is transmitted through the mapping bearer, so that the terminal can transmit network data of another system under one communication system, and the data transmission of the first network node can be ensured to be normally transmitted when the first network node is switched or a link failure and the like occur, and the interruption of the data transmission is avoided.

Drawings

Fig. 1 is a schematic flow chart of a communication method according to an embodiment of the present application;

FIG. 2 is a second flow chart of a communication method according to an embodiment of the present disclosure;

FIG. 3 is a third flow chart of a communication method according to an embodiment of the present disclosure;

fig. 4 is a block diagram of a wireless communication system provided in an embodiment of the present application;

fig. 5 is a schematic diagram of a communication device applied to a terminal according to an embodiment of the present application;

fig. 6 is a schematic diagram of a communication device applied to a second network node according to an embodiment of the present application;

fig. 7 is a schematic diagram of a communication device applied to a core network node according to an embodiment of the present application;

Fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application;

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

fig. 10 is one of schematic structural diagrams of a network device according to an embodiment of the present application;

fig. 11 is a second schematic structural diagram of a network device according to an embodiment of the present application;

fig. 12 is a third schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present application more apparent, the following detailed description will be given with reference to the accompanying drawings and the specific embodiments.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present application, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In addition, the terms "system" and "network" are often used interchangeably herein.

In the examples provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

A Terminal (UE), also known as a Mobile Terminal (Mobile Equipment), a Mobile User Equipment (UE), etc., may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the User Equipment may be Mobile terminals, such as Mobile phones (or "cellular" phones) and computers with Mobile terminals, for example, portable, pocket, hand-held, computer-built-in or vehicle-mounted Mobile devices, which exchange voice and/or data with the radio access network.

As shown in fig. 1, an embodiment of the present application provides a communication method, which is applied to a terminal, including:

step 101, when a terminal receives a switching instruction sent by a first network node and/or the terminal meets a first condition, activating a mapping bearer according to an activation command of a second network node; the mapped bearer is a mapping of a first bearer of the first network node in the second network node; the first network node is a network node of a first system, and the second network node is a network node of a second system. For example: the first network node is a 5G network node and the second network node is a 6G network node; alternatively, the first network node is a 6G network node and the second network node is a 5G network node. It should be noted that the first network node and the second network node may also be network nodes of other standards, which is not limited herein.

Step 102, transmitting data to be transmitted on the first network node through the mapping bearer.

Optionally, before step 101 of the embodiment of the present application, the first network node receives a second bearer setup message sent by the core network node to establish a bearer (for example, the first bearer described above); the second network node receives a first bearer establishment message sent by the core network node and establishes a mapping bearer; the bearer established by the first network node and the mapped bearer established by the second network node have a corresponding relationship, i.e. the mapped bearer of the second network node is a mapping of the bearer of the first network node.

For example, when the first network node is a fifth generation mobile communication (5G) node and the second network node is a sixth generation mobile communication (6G) node, a mapping bearer is established: the core network node respectively sends a bearer establishment message to the 5G network node and the 6G network node; the method comprises the steps that a 5G network node and a 6G network node respectively receive a bearer establishment message, the 5G network node establishes a bearer, and the 6G network node establishes a mapping bearer of the bearer; or, the 6G network node establishes a bearer, and the 5G network node establishes a mapping bearer of the bearer.

Optionally, when the terminal is in a connection state with the first network node, if network switching is required, the first network node may send a switching instruction to the terminal, and after receiving the switching instruction, the terminal switches the first network node; alternatively, in the case where the terminal satisfies the first condition, for example: a link failure is sent by the connection with the first network node; at this time, in order to avoid interruption of data transmitted at the first network node, the terminal activates a mapping bearer according to the activation command of the second network node, and data that would otherwise need to be transmitted at the first network node is transmitted through the mapping bearer. And realizing the transmission of the data to be transmitted of the first network node by the second network node. Wherein the activation command is used to activate the mapping bearer of the second network node.

For example, the 6G network node establishes a mapped bearer for the terminal, which is a mapping of bearers of the 5G network node in the 6G network node. That is, when the core network sends 5G service data to the terminal, the 5G service data may be directly sent to the 5G network node through the bearer of the 5G network node, where the 5G network node sends the 5G service data to the terminal, or may send the 5G service data to the 6G network node through the 6G mapping bearer, where the 5G network node sends the 5G service data to the terminal.

The link failure of the network node can cause the terminal to initiate a reestablishment flow or cause interruption of data transmission when switching scenes. In the embodiment of the application, when receiving the switching instruction sent by the first network node and/or the terminal meets the first condition, the terminal can initiate the connection restoration or reconstruction of the first network node through the second network node, and simultaneously, continue to transmit the data to be transmitted on the first network node on the mapping bearer of the second network node, so as to avoid data interruption.

Alternatively, in the embodiment of the present application, the first network node may be a fifth generation mobile communication (5G) node, and the second network node may be a sixth generation mobile communication (6G) node; alternatively, the first network node may be a 6G network node and the second network node may be a 5G network node; but the first network node and the second network node are different. The first network node and the second network node may also be other network nodes, which are not limited herein.

Optionally, the first condition in the embodiment of the present application includes at least one of:

1) The terminal satisfies a switching condition of conditional switching (Conditional Handover, CHO); optionally, if the function set of the preset communication mode includes CHO, the preset communication mode includes CHO; in another implementation, the set of functions of the predetermined communication mode includes CHO and the CHO function is indicated as on/off by a function parameter. The preset communication mode may be an idle state or an inactive state or a connected state.

It should be noted that, in the CHO mechanism, the first network node issues a handover command to the UE in advance, where the handover command includes the condition configuration information. And the UE executes switching according to the switching command received before when the configured condition is met.

2) And the connection link failure occurs between the terminal and the first network node. Wherein link failure may also trigger to cause CHO.

According to the embodiment of the application, under the condition that the first condition that continuous communication cannot be realized is met, the terminal activates the mapping bearer of the second network node and realizes the transmission of the data to be transmitted on the first network node by using the mapping bearer of the second network node, so that communication interruption is avoided.

Optionally, in an embodiment of the present application, the method further includes:

step 103, sending an activation request message of the mapping bearer to the second network node;

and/or the number of the groups of groups,

step 104, sending an activation request message of the mapping bearer to the first network node, where the first network node is configured to forward the activation request message to the second network node or a core network node.

In this embodiment, when the terminal receives a handover instruction sent by the first network node and/or the terminal satisfies a first condition, the terminal sends an activation request message of the mapping bearer to the second network node, so that the mapping bearer of the second network node is activated; or sending the activation request message to the first network node, so that the first network node forwards the activation request message to the second network node; or forwarding the activation request message to the second network node via a core network node.

For example, when the first network node is a 5G network node and the second network node is a 6G network node, step 103, the terminal sends the activation request message to the 6G network node when the terminal receives a handover instruction sent by the 5G network node and/or the terminal satisfies a first condition; or, step 104, the terminal sends the activation request message to the 5G network node, and the 5G network node directly sends the activation request message to the 6G network node; alternatively, the activation request message is forwarded to the 6G network node via the core network node.

Optionally, in an embodiment of the present application, the activation request message is used to request the second network node to activate the mapping bearer and transmit data. The activation request message includes at least one of the following information:

1) Requesting an activated session identification; the session identifier is used to indicate which session is requested to be activated by the terminal, for example, session identifier a, which indicates that the terminal requests to activate the session corresponding to session identifier a.

2) Requesting the identifier of the first bearer corresponding to the activated mapping bearer; the identifier of the first bearer corresponding to the mapping bearer activated by the request is used for indicating: the terminal requests which first bearer corresponds to the activated mapping bearer. For example, the identifier of the first bearer corresponding to the mapping bearer requested to be activated is identifier a, which indicates that the terminal requests to activate the mapping bearer corresponding to the identifier a.

3) Packet data convergence protocol PDCP status report; for indicating PDCP status reports that have been received correctly at present, and/or indicating PDCP status reports that have not been received correctly;

4) PDCP sequence number SN; for indicating PDCP SNs that have currently been correctly received, and/or indicating PDCP SNs that have not been correctly received;

5) A bit map; for indicating that a bit map has been received correctly at present and/or indicating that a bit map has not been received correctly.

In some embodiments, after receiving the handover command sent by the first network node, the UE may determine that the configuration information is a PDCP SN in a communication system (e.g., LTE system) or an extended PDCP SN according to bearer configuration information of the first network node. The length of the extended PDCP SN is greater than that of the PDCP SN as in the LTE system).

step 105, receiving an activation command of the mapping bearer sent by the second network node.

In this embodiment, when the terminal needs to use the mapping bearer to transmit the data to be transmitted at the first network node, an activation request message may be sent to the second network node; and the second network node determines the mapping bearer to be activated according to the activation request message, so as to send an activation command to the terminal. And after receiving the activation command of the mapping bearer, the terminal activates the mapping bearer indicated by the activation command, and receives or transmits the data to be transmitted on the first network node on the mapping bearer.

Optionally, in the embodiment of the present application, when the terminal receives a handover command sent by the first network node, or when the terminal meets a 5G CHO handover condition, or when a link failure occurs in a 5G connection of the terminal, if the terminal receives an activation command (a message for activating a mapping bearer) sent by the first network node or the second network node, the terminal may activate the corresponding mapping bearer according to the activation command.

Optionally, the activation command includes:

1) An activated session identification; in this embodiment, the activated session identifier indicates an identifier of a session that the second network node indicates that the terminal activates, for example, the 6G network node sends the activation command, where the activation command includes: and the session identifier B indicates that the terminal activates the session corresponding to the session identifier B. By activating the session under the 6G network node through the activation command, the 6G network node can be enabled to continue transmitting data which is not transmitted by the 5G network node.

2) The activated mapped bearer corresponds to the identity of the first bearer.

In this embodiment, the identifier of the first bearer corresponding to the activated mapping bearer is used to indicate the identifier of the first bearer of the first network node corresponding to the activated mapping bearer, that is: indicating which of the first bearer's mapped bearers is to be activated. For example: and if the identifier of the first bearer corresponding to the activated mapping bearer is the identifier A, the second network node indicates the terminal to activate the mapping bearer corresponding to the identifier A.

Optionally, in an embodiment of the present application, step 102 includes:

step 106, sending uplink data to the second network node through the mapping bearer, wherein the uplink data is data to be transmitted on the first network node;

And/or the number of the groups of groups,

step 107, receiving downlink data sent by the second network node on the mapping bearer, where the downlink data is data to be transmitted on the first network node.

In this embodiment, when the terminal receives a handover instruction sent by a first network node and/or the terminal satisfies a first condition, if the terminal has incomplete transmission of uplink data to the first network node, the terminal may send the uplink data to the second network node through the mapping bearer, so that data to be transmitted on the first network node continues to be transmitted, and the second network node transmits the data to be transmitted of the first network node to a core network; or if the first network node has incomplete transmission of the downlink data, the downlink data can be sent to the terminal through the mapping bearer, so that the data to be transmitted on the first network node can continue to be transmitted, and the terminal can receive or send the data through the mapping bearer.

For example: the terminal may send uplink data originally transmitted on the 5G network node to the mapping bearer of the 6G network node, and may also receive downlink data originally received on the 5G network node bearer from the mapping bearer of the 6G network node.

For example, when the first network node is a 5G network node and the second network node is a 6G network node, step 106 may specifically be: and under the condition that the 5G network node sends a switching instruction and/or the terminal meets a first condition, the terminal needs to send uplink data to the network side equipment, at this time, the terminal can activate a mapping bearing on the 6G network node, and send the uplink data to the 6G network node through the mapping bearing, so that the 6G network node sends the uplink data which is originally transmitted on the 5G network node to a core network.

In another specific embodiment, when the first network node is a 5G network node and the second network node is a 6G network node, step 107 may specifically be: under the condition that the 5G network node sends a switching instruction and/or the terminal meets a first condition, the network side equipment needs to send downlink data to the terminal, at this time, the terminal can activate a mapping bearer on the 6G network node, and the 6G network node can send the downlink data which should be originally transmitted on the 5G network node on the mapping bearer.

It should be noted that, the selection of the two methods in step 106 or step 107 depends on whether the currently initiated service is uplink data transmission or downlink data transmission.

step 108, sending a response message to the first network node and/or the second network node;

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

It should be noted that, the PDCP status report or PDCP SN number or bit map is used to indicate that the terminal has correctly received the PDCP status report or PDCP SN number or bit map currently, and/or indicate that the PDCP status report or PDCP SN number or bit map has not been correctly received.

In this embodiment, after the terminal activates the mapping bearer according to the activation command, a response message may be sent to the first network node and/or the second network node to notify that the mapping bearer corresponding to the first network node and/or the second network node is activated.

Optionally, after the terminal transmits the data to be transmitted on the first network node through the mapping bearer, in order for the network side to know whether the data to be transmitted is successfully transmitted, the terminal may send a response message to the second network node; or, the terminal may send a response message to the first network node; alternatively, the terminal may send a response message to the first network node and the second network node, respectively. For example, when the first network node is a 5G network node and the second network node is a 6G network node, after transmitting data to be transmitted on the 5G network node through the mapping bearer, a response message may be sent to the 5G network node; or, the terminal may send a response message to the 5G network node; alternatively, the terminal may send response messages to the 5G network node and the 6G network node, respectively. The manner of selecting the transmission of the response message in the present application is not particularly limited herein.

As shown in fig. 2, an embodiment of the present application provides a communication method, which is applied to a second network node, and includes:

step 201, a mapping bearer is established according to a first bearer establishment message sent by a core network node;

step 202, transmitting data to be transmitted on a first network node through the mapping bearer;

In this embodiment, the core network node sends a first bearer establishment message to the second network node, so as to instruct the second network node to establish a mapping bearer of a first bearer of the first network node, that is, under the configuration of the core network, the second network node establishes a mapping bearer of the first bearer, and when the connection between the first network node and the terminal is disconnected or the link fails or is switched, data to be transmitted on the first network node can be continuously transmitted through the mapping bearer of the second network node, so as to avoid interruption of data transmission.

Optionally, in an embodiment of the present application, the first bearer setup message includes at least one of:

1) 5QI information; alternatively, 5QI information may be used to determine the priority level.

2) A session identifier; the session identity may indicate an identity of a session that the second network node needs to establish.

3) And the bearer mapping identifier is used for indicating the identifier of the first bearer corresponding to the mapped bearer. I.e. the identity of the first bearer corresponding to the mapped bearer established by the second network node. The bearer mapping identity is an identity corresponding to a bearer establishment message sent to a first network node bearer, where the bearer may be a session. For example: the bearer mapping identifier is an identifier a, and is used for indicating that the mapped bearer established by the second network node is a bearer mapping corresponding to the identifier a.

For example, the bearer mapping identifier of the first bearer establishment message is an identifier M, and the session identifier is N, which indicates that data communication of the member N is performed under the bearer M.

step 203, receiving an activation request message of the mapping bearer;

In this embodiment, when the terminal receives a handover instruction sent by a first network node and/or the terminal satisfies a first condition, in order to ensure that incomplete data on the first network node can be transmitted on a basic basis, the terminal sends an activation request message to the second network node, requests to activate a mapping bearer of the second network node, and continues to perform data transmission through the activated mapping bearer, so that continuity of data transmission can be ensured.

Optionally, in an embodiment of the present application, step 203 includes one of:

1) Receiving the activation request message sent by the terminal;

2) Receiving the activation request message sent by a first network node;

3) And receiving the activation request message sent by the core network node.

In one embodiment, the second network node (e.g., a 6G network node) directly receives the activation request message sent by the terminal; in one embodiment, the terminal may send an activation request message to the first network node (such as the 5G network node), and the 5G network node sends an activation request message to the 6G network node again, that is, the 6G network node receives the activation request message sent by the 5G network node; one embodiment may also be to receive an activation request message sent via a core network node.

According to the embodiment of the application, the corresponding implementation mode for receiving the activation request message is selected according to a specific scene, and activation of the second network cell mapping bearer is achieved.

Optionally, in an embodiment of the present application, the activation request message includes at least one of the following information:

requesting an activated session identification;

PDCP status reporting;

PDCP SN；

bit map.

Optionally, in an embodiment of the present application, before step 202, the method further includes:

step 204, sending the activation command of the mapping bearer to the terminal.

In this embodiment of the present application, when the terminal receives a handover command sent by the first network node, or when the terminal meets a CHO handover condition, or when the terminal fails in a link at the first network node, the second network node sends an activation command of the mapping bearer to the terminal, and activates the mapping bearer of the second network node according to the activation command.

Optionally, when both the 5G and the 6G of the terminal are in a connection state, in order to reduce service interruption caused by handover, the mapping bearer is a mapping of the 5G bearer in the 6G, and when the second network node is a 6G network node, an activation command of the 6G mapping bearer is sent through the 6G network node; symmetrically, the mapping bearer is the mapping of the 6G bearer in the 5G, and when the second network node is the 5G network node, an activation command of the 5G mapping bearer is sent through the 5G network node.

Optionally, in an embodiment of the present application, the activation command includes:

an activated session identification;

the activated mapped bearer corresponds to the identity of the first bearer.

step 205, receiving a response message sent by the terminal;

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

In this embodiment, after the terminal activates the mapping bearer according to the activation command, a response message may be sent to the second network node to notify the second network node that the corresponding mapping bearer is activated.

Optionally, after the terminal transmits the data to be transmitted on the first network node through the mapping bearer, in order for the network side to know whether the data to be transmitted is successfully transmitted, the terminal may send a response message to the second network node; or, the terminal may send a response message to the first network node; alternatively, the terminal may send a response message to the first network node and the second network node, respectively. When the first network node is a 5G network node and the second network node is a 6G network node, after the data to be transmitted on the 5G network node is transmitted through mapping bearing, the 6G network node can directly receive a response message sent by the terminal; the terminal sends the response message to the 5G network node and forwards the response message to the 6G network node, wherein the 6G network node receives the forwarded response message. The manner of selection of receiving the response message in the present application is not particularly limited herein.

Optionally, in an embodiment of the present application, in step 202, the method includes:

step 206, receiving uplink data sent by a terminal on the mapping bearer, wherein the uplink data is data to be transmitted on the first network node;

and/or the number of the groups of groups,

step 207, sending downlink data to the terminal through the mapping bearer, where the downlink data is data to be transmitted on the first network node.

For example, when the first network node is a 5G network node and the second network node is a 6G network node, step 206 may specifically be: the network side equipment receives the uplink data, at this time, the terminal can activate a mapping bearer on the 6G network node, and send the uplink data to the 6G network node through the mapping bearer, so that the 6G network node sends the uplink data which is originally transmitted on the 5G network node to the core network.

In another specific embodiment, when the first network node is a 5G network node and the second network node is a 6G network node, step 207 may specifically be: the network side equipment needs to send downlink data to the terminal, at this time, the terminal can activate a mapping bearer on the 6G network node, and the 6G network node can send the downlink data which should be originally transmitted on the 5G network node on the mapping bearer.

It should be noted that, the selection of the two methods in step 206 or step 207 depends on whether the currently initiated service is uplink data transmission or downlink data transmission.

In the embodiment of the present application, the second network node establishes a mapping bearer according to a first bearer establishment message sent by the core network node, and uses the mapping bearer to transmit data to be transmitted on the first network node. The method can realize the transmission of network data of one system under the other system, and ensure that the data transmission of the first network node can be normally transmitted when the first network node is switched or the condition of link failure and the like occurs, thereby avoiding the interruption of the data transmission.

As shown in fig. 3, an embodiment of the present application provides a communication method, which is applied to a core network node, including:

step 301, sending a first bearer establishment message to a second network node, and sending a second bearer establishment message to the first network node;

In the embodiment of the application, a core network node sends a bearer establishment message to a first network node and a second network node respectively; the method comprises the steps that a second bearer establishment message is sent to a first network node, wherein the second bearer establishment message can carry at least one of 5QI (5G QoS) information, a session identifier and a mapping bearer identifier (used for indicating a 6G mapping bearer corresponding to the 5G bearer); a first bearer establishment message sent to a second network node, where the first bearer establishment message may include at least one of 5QI information, a session identifier, and a 5G bearer mapping identifier; the first network node and the second network node respectively receive the bearer establishment message and respectively establish a bearer and a mapping bearer.

In one embodiment, optionally, under the configuration of the core network, the 6G network node establishes a mapping bearer corresponding to a specific bearer in the 5G network node, and is configured to continue transmitting the 5G data through the mapping bearer of the 6G when the 5G bearer is disconnected, or when the link fails, or when the link is switched, so as to avoid interruption of data transmission.

In another embodiment, optionally, the establishment of the mapping bearer is known, and the 6G network establishes the mapping bearer for the terminal, where the mapping bearer is a mapping of the 5G bearer in the 6G. Namely, the 5G service issued by the core network to the terminal can be directly issued to the 5G network node through the 5G bearer, or can be issued to the 6G network node through the 6G mapping bearer, and the 6G network node issues the 5G service to the terminal.

5QI information;

a session identifier;

and the bearer mapping identifier is used for indicating the identifier of the first bearer corresponding to the mapped bearer. I.e. the identity of the first bearer corresponding to the mapped bearer established by the second network node. The bearer mapping identity is an identity corresponding to a bearer establishment message sent to a first network node bearer, where the bearer may be a session. For example: the bearer mapping identifier is an identifier a, and is used for indicating that the mapped bearer established by the second network node is a bearer mapping corresponding to the identifier a.

Optionally, the bearer mapping identifier in the first bearer establishment message may be a first bearer identifier of the first network node generated by the bearer mapping, or may be a first bearer identifier generated by requesting the UE or the first network node, and the identifier of the first bearer corresponds to the bearer mapping identifier. The application is specific to the particular situation.

For example, the bearer mapping identifier is identifier C, and the identifier of the corresponding first bearer may be generated according to the identifier C mapping, such as identifier D; the identity D of the first bearer may also be determined by the UE or the first network node.

Optionally, in an embodiment of the present application, the second bearer setup message includes at least one of:

5QI information;

a session identifier;

and the bearer mapping information is used for indicating a mapping bearer corresponding to the first bearer. I.e. indicating a mapped bearer corresponding to the first bearer established by the first network node, e.g.: the bearer mapping information may represent a 6G mapped bearer corresponding to a 5G bearer. When the 5G bearer is disconnected, data is transmitted by the mapping bearer of the 6G network node.

In this embodiment, in order to ensure normal operation of an intersystem handover between a 5G network node and a 6G network node, communication is not interrupted. After the first bearer is determined, for subsequent communication processing, bearer mapping information after mapping is required to be obtained to determine a bearer context, that is, a mapped bearer corresponding to the first bearer is determined according to the allocated first bearer and is processed.

For example, the first bearer may cause updating of a temporarily set dedicated bearer flag or the like. The context of the first bearer may specifically include identification information of each bearer, tunnel endpoint information of the bearer, and 5QI information parameters of the bearer, etc.

It should be noted that, according to the first bearer establishment message, the parameter information between the bearer mapping identifier and the corresponding identifier of the first bearer, or according to the second bearer establishment message, the parameter information between the first bearer and the corresponding mapping bearer is determined, so as to provide data support for the mapping bearer of the subsequent second network node to continue transmitting the data of the first network node.

As shown in fig. 4, the embodiment of the present application further provides a wireless communication system, where the wireless communication system includes a terminal 41, a network side device and a core network node 44, and the network side device includes a first network node 42 and a second network node 43. For example, in the case where the first network node 42 is a 5G network node and the second network node 43 is a 6G network node, the following description is given to fig. 4:

a) Both the 5G network node and the 6G network node access a 5GC core network (core network node 43);

b) The terminal 41 can access the 5G network node and the 6G network node simultaneously;

c) The terminal 41 may maintain RRC connections with both the 5G network node and the 6G network node, the two RRC connections being independent of each other;

d) The terminal 41 maintains two sets of RRC states, namely, a 5G RRC state (including connected, inactive, idle), a 6G RRC state (e.g., connected, inactive, power-saving, idle);

e) The terminal 41 maintains only one set of core network states. When both RRC connections are in idle state, the core network state is idle state. If one of the two RRC connections is in a connected state or inactive, the core network state is a connected state.

Optionally, in the embodiment of the present application, the terminal actively triggers a service, and further includes:

1. when a terminal initiates a service;

2. if the triggered service is the service supported by the 5G network node only, the terminal initiates a connection establishment request at the 5G network node, namely, the terminal initiates a connection suggestion request when the terminal is operated by the service;

4. if the service is the service supported by the 6G network node only, the terminal initiates a connection establishment request at the 6G network node;

5. if the service is supported by both the 5G network node and the 6G network node, the terminal selects according to a preset rule, for example, the 6G network node signal is better than a certain condition, the 6G network node is preferentially used, and otherwise, the 5G network node is used; or the terminal defaults to being initiated at the 5G network node or the 6G network node. Or the terminal autonomously selects to initiate at the 5G network node or the 6G network node. Or the terminal initiates at both the 6G network node and the 5G network node.

In an embodiment of the present application, optionally, the method further includes:

step 410, sending a connection establishment request to a first target network node supporting a first service in case the terminal has the first service to be transmitted.

Optionally, step 410 described above includes one of:

and a step a of sending the connection establishment request to the first network node if the first service is a service supported by the first network node.

B, if the first service is a service supported by the second network node, sending the connection establishment request to the second network node;

step c, if the first service is a service supported by both the first network node and the second network node, selecting the first target network node according to a first rule, and sending the connection establishment request to the first target network node; the first rule is for example: selecting a network node with better signal quality as the first target network node; or, the default first network node is the first target network node; alternatively, the default second network node is the first target network node.

And d, if the first service is the service supported by the first network node and the second network node, respectively sending the connection establishment request to the first network node and the second network node.

For example: the traffic supported by the first network node represents traffic supported by the 5G network node and the traffic supported by the second network node represents traffic supported by the 6G network node. In step a, when a service is initiated by the terminal, if the first service is a service supported by the 5G network node only, the connection establishment request is sent to the 5G network node. In step b, when the terminal has service initiation, if the first service is a service supported by the 6G network node only, the connection establishment request is sent to the 6G network node.

In step c, when the terminal has a service initiation, if the first service is a service supported by both the 5G network node and the 6G network node, the terminal selects according to a predetermined rule (first rule), for example, the 5G signal is better than a certain condition (for example, greater than a threshold value), and preferentially selects the 5G network node to establish connection, otherwise, selects the 6G network node to establish connection. Alternatively, the terminal defaults to being initiated at the 5G network node or the 6G network node, or the terminal autonomously selects to be initiated at the 5G network node or the 6G network node.

In step d, when the terminal has service initiation, if the first service is a service supported by both the 5G network node and the 6G network node, the terminal initiates connection at the 6G network node and the 5G network node respectively and simultaneously, and the 5G network node is the 5G network node.

In this embodiment of the present application, optionally, in a case where the terminal is in a dual idle state (idle), the method further includes:

411, receiving paging configuration information, wherein the paging configuration information comprises a paging identifier;

step 412, receiving a paging message sent by the core network according to the paging identifier;

step 413, accessing to the corresponding network node according to the paging message.

In this embodiment, the terminal receives paging configuration information, where the paging configuration information carries an identifier for receiving a paging message (i.e. the paging identifier), which may be the paging configuration information sent by the first network node and/or the second network node, or may be the paging configuration information sent by the core network, which is not specifically limited herein. For example, the 5G network node sends a paging identity for 5G network access to the terminal, and the 6G network node sends a paging identity for 6G network access to the terminal. And the terminal receives the paging message under the 5G network node or the 6G network node according to the paging identification. Step 412 to step 413, the terminal implements access to the corresponding network node according to the received paging message. For example, after receiving the paging message, the terminal performs 5G cell access or 6G cell access according to the paging message.

In this embodiment of the present application, optionally, the paging message includes at least one of the following information:

1) The system information corresponding to the paging message; the system information is used for indicating the network system corresponding to the paging message, for example, for indicating at least one of the following items corresponding to the paging message: 5G paging, 6G paging.

2) Network identification information corresponding to the paging message; the network identification information is used to distinguish between the first network node identification or the second network node identification, for example, it may be a 5G identification or a 6G identification.

3) Service type information; the service type information is used to represent the type of service supported by the network node, e.g. to determine whether the current node supports 5G services or 6G services.

4) Slice information. For example, slice information includes, but is not limited to: slice identification, slices supporting traffic of the first network node and/or the second network node, etc.

In this embodiment, after receiving the paging message, the terminal may determine an access network node according to the paging message, for example: the paging message comprises a 5G cell identifier, and a 5G cell indicated by the 5G cell identifier supports a first service, so that the terminal accesses a 5G cell corresponding to the 5G cell identifier; or the paging message includes a 6G cell identifier, and if the 6G cell indicated by the 6G cell identifier supports the first service, the terminal accesses the 6G cell corresponding to the 6G cell identifier.

In one embodiment, when the terminal is in the dual idle state, in the embodiment of the present application, the terminal receives paging configuration information sent by the network side, where the paging configuration information carries an identifier for receiving paging. Specifically, the 5G network node sends a paging identifier for the 5G network node to the terminal, and the 6G network node sends a paging identifier for the 6G network node to the terminal. And the terminal receives the paging message under the 5G network node or the 6G network node by using the paging identification.

Wherein the paging message indicates that the MT service is from a 5G network node or a 6G network node, a type of service, a slice, etc.; the MT service request is a service request actively triggered by the service platform.

After receiving the paging message, the terminal goes to 5G or 6G cell for access. If two cells need to be accessed simultaneously. The terminal listens to paging RNTI (Radio Network Temporary Identifier ) of two cells simultaneously, and two base stations negotiate to avoid paging collision.

In this embodiment of the present application, in a case where the terminal is in a connection state of the first network node and is in an inactive state of the second network node, the method optionally further includes:

Step 414, receiving second service data sent by the first network node;

in this embodiment, when the terminal is in the connection state of the first network node and in the inactive state of the second network node, it may be understood that when the terminal 5G network node is in the connection state and there is a service arrival of the 6G network node, the current terminal is in the inactive state of the 6G network node; or when the terminal 6G network node is in a connected state and there is a service of the 5G network node arriving, the current terminal is in an inactive (inactive) state of the 5G network node.

In the above case, the terminal may directly receive the second service data sent by the first network node. For example: when the terminal is in a 5G network node connection state, receiving second service data of the 6G network node at the 5G network node; or when the terminal 6G network node is in a connection state, receiving second service data of the 5G network node at the 6G network node.

Or, in the case that the terminal is in a connection state of the first network node and is in an inactive state of the second network node, the method further includes:

Step 415, receiving a radio resource control RRC message sent by the first network node, where the RRC message is generated by triggering by the second network node;

step 416, initiating access to the second network node according to the RRC message;

step 417, receiving the second service data in case of establishing a connection with the second network node;

wherein the second service data is related data of a second service supported by the second network node.

In this embodiment, the second network node is in an inactive state, at this time, the second network node triggers to generate an RRC message, and the RRC message is forwarded by the first network node to the terminal, and according to the RRC message, the terminal initiates access to the second network node, establishes connection, and after the establishment is successful, receives second service data sent by the second network node.

For example; when the 6G service arrives, if the current terminal is in an inactive state at the 6G network node, the 6G network node can trigger an RRC message instead of forwarding service data, and the RRC message is forwarded to the terminal through the 5G network node to request the terminal to initiate access to the 6G network node.

Optionally, the selection of the above-mentioned step 414, or the two processing manners from step 415 to step 417 depends on whether the currently initiated service data is carried on the first network node or the second network node.

In this embodiment of the present application, optionally, the first network node and the second network node are both master stations, and each network node has RRC capability, and may be configured separately for the terminal. Each network node may communicate with a core network. Optionally, the method further comprises: capability negotiation is performed between the first network node and the second network node, and handover related information may be negotiated, for example: and negotiating whether the 6G is synchronously switched if the 5G is switched.

For example, an a cell under 5G is associated with an a cell under 6G, and a B cell under 5G is associated with a B cell under 6G. If the terminal reselects from the first network node (e.g., a cell under 5G) to a third network node (e.g., B cell under 5G), it is determined whether the second network node (e.g., a cell under 6G) reselects to the fourth network node (e.g., B cell under 6G) according to capability negotiation between the two network nodes.

It should be noted that, compared to the 6G network node, the 5G network node operates in a lower frequency band, and has a narrower bandwidth than the 6G network node, so that power is saved. When the terminal has low service requirement or 5G network node service requirement, the terminal uses 5G network node, and when the terminal has higher bandwidth requirement or 6G network node service requirement, the terminal uses 6G network node for communication.

In this embodiment of the present application, optionally, the RRC is lightly connected, and the user plane anchor point is heavy. The RRC may connect at a 5G network node or a 6G network node, and select the corresponding network node when the network nodes are connected.

In this embodiment of the present application, optionally, a manner of terminal access includes at least one of the following:

first, the terminal initiates random access to a first network node (such as a 5G network node) and carries an RRC connection setup request,

and secondly, when the terminal has the service initiation of a second network node (such as a 6G network node), the terminal initiates access to the second network node. And the terminal measures the strongest signal cell of the second network node, and resides in the inactive state after being accessed to the second network node.

Thirdly, when any one of the first network node and the second network node is in a Connected state, the state of the core network node is in a Connected state (CM Connected).

As shown in fig. 5, an embodiment of the present application further provides a communication device, which is applied to a terminal, including:

a first processing module 501, configured to activate a mapping bearer according to an activation command of a second network node when a terminal receives a handover command sent by the first network node and/or the terminal satisfies a first condition;

A second processing module 502, configured to transmit data to be transmitted on the first network node through the mapping bearer;

In an embodiment of the present application, optionally, the first condition includes at least one of:

the terminal meets the switching condition of the conditional switching CHO;

In an embodiment of the present application, optionally, the foregoing apparatus further includes:

a first sending module, configured to send an activation request message of the mapping bearer to the second network node;

and/or the number of the groups of groups,

and the second sending module is used for sending the activation request message of the mapping bearer to the first network node, and the first network node is used for forwarding the activation request message to the second network node or the core network node.

and the first receiving module is used for receiving the activation command of the mapping bearer sent by the second network node.

requesting an activated session identification;

packet data convergence protocol PDCP status report;

PDCP sequence number SN;

bit map.

In this embodiment of the present application, optionally, the activation command includes:

an activated session identification;

the activated mapped bearer corresponds to the identity of the first bearer.

In this embodiment of the present application, optionally, the second processing module 502 includes:

a first processing unit, configured to send uplink data to the second network node through the mapping bearer, where the uplink data is data to be transmitted on the first network node;

and/or the number of the groups of groups,

and the second processing unit is used for receiving downlink data sent by the second network node on the mapping bearer, wherein the downlink data is data to be transmitted on the first network node.

a third sending module, configured to send a response message to the first network node and/or the second network node;

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

It should be noted that, the above device provided in the embodiment of the present application can implement all the method steps implemented by the embodiment of the communication method, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the embodiment of the method in the embodiment are omitted herein.

As shown in fig. 6, the embodiment of the present application further provides a communication apparatus, which is applied to a second network node, including:

a third processing module 601, configured to establish a mapping bearer according to a first bearer establishment message sent by a core network node;

a third processing module 602, configured to transmit data to be transmitted on the first network node through the mapping bearer;

In this embodiment of the present application, optionally, the first bearer setup message includes at least one of the following:

5QI information;

a session identifier;

the second receiving module is used for receiving the activation request message of the mapping bearer;

In an embodiment of the present application, optionally, the second receiving module includes one of the following:

the first receiving unit is used for receiving the activation request message sent by the terminal;

a second receiving unit, configured to receive the activation request message sent by the first network node;

and the third receiving unit is used for receiving the activation request message sent by the core network node.

In this embodiment of the present application, optionally, the activation request message includes at least one of the following information:

requesting an activated session identification;

PDCP status reporting;

PDCP SN；

bit map.

and the fourth sending module is used for sending the activation command of the mapping bearer to the terminal.

an activated session identification;

The activated mapped bearer corresponds to the identity of the first bearer.

the third receiving module is used for receiving the response message sent by the terminal;

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

In this embodiment of the present application, optionally, the third processing module 602 includes:

a third processing unit, configured to receive uplink data sent by a terminal on the mapping bearer, where the uplink data is data to be transmitted on the first network node;

and/or the number of the groups of groups,

and the fourth processing unit is used for sending downlink data to the terminal through the mapping bearer, wherein the downlink data is data to be transmitted on the first network node.

As shown in fig. 7, the embodiment of the present application further provides a communication device, which is applied to a core network node, including:

A fifth processing module 701, configured to send a first bearer establishment message to a second network node, and send a second bearer establishment message to the first network node;

5QI information;

a session identifier;

In this embodiment of the present application, optionally, the second bearer setup message includes at least one of the following:

5QI information;

a session identifier;

As shown in fig. 8, to achieve the above object, an embodiment of the present application further provides a terminal 800, including a processor 810 and a transceiver 820;

the transceiver 820 is configured to: activating a mapping bearer according to an activation command of a second network node under the condition that a terminal receives a switching instruction sent by a first network node and/or the terminal meets a first condition;

the processor 810 is configured to: transmitting data to be transmitted on the first network node through the mapping bearer;

Optionally, the first condition includes at least one of:

the terminal meets the switching condition of the conditional switching CHO;

Optionally, the transceiver 820 is further configured to:

and/or the number of the groups of groups,

Optionally, the transceiver 820 is further configured to:

requesting an activated session identification;

packet data convergence protocol PDCP status report;

PDCP sequence number SN;

bit map.

Optionally, the activation command includes:

an activated session identification;

the activated mapped bearer corresponds to the identity of the first bearer.

Optionally, the processor 810 is further configured to:

and/or the number of the groups of groups,

Optionally, the transceiver 820 is further configured to:

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

It should be noted that, the above terminal provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the communication method applied to the terminal, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the embodiment of the method in the embodiment are omitted herein.

A terminal according to another embodiment of the present application, as shown in fig. 9, includes a transceiver 910, a processor 900, a memory 920, and a program or instructions stored on the memory 920 and executable on the processor 900; the processor 900 implements the communication method applied to the terminal described above when executing the program or instructions.

The transceiver 910 is configured to receive and transmit data under the control of the processor 900.

Wherein in fig. 9, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 900 and various circuits of memory represented by memory 920, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 910 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 930 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 900 in performing operations.

Referring to fig. 10, the embodiment of the present application further provides a network device 1000, where the network device 1000 is a second network node, and includes a processor 1010 and a transceiver 1020;

the processor 1010 is configured to: establishing a mapping bearer according to a first bearer establishment message sent by a core network node;

the processor 1010 is further configured to: transmitting data to be transmitted on the first network node through the mapping bearer;

Optionally, the first bearer setup message includes at least one of:

5QI information;

a session identifier;

Optionally, the transceiver 1020 is configured to:

receiving an activation request message of the mapping bearer;

Optionally, the transceiver 1020 is further specifically configured to include one of the following:

receiving the activation request message sent by the terminal;

receiving the activation request message sent by a first network node;

and receiving the activation request message sent by the core network node.

requesting an activated session identification;

PDCP status reporting;

PDCP SN；

bit map.

Optionally, the transceiver 1020 is further configured to:

and sending the activation command of the mapping bearer to the terminal.

Optionally, the activation command includes:

an activated session identification;

the activated mapped bearer corresponds to the identity of the first bearer.

Optionally, the transceiver 1020 is further configured to:

receiving a response message sent by the terminal;

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

Optionally, the processor 1010 is further configured to:

and/or the number of the groups of groups,

It should be noted that, the network device provided in this embodiment of the present application can implement all the method steps implemented by the embodiment of the method of the second network node, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiment in this embodiment are omitted.

Referring to fig. 11, to achieve the above objective, an embodiment of the present application further provides a network device 1100, where the network device 1100 may be a core network node, and includes a processor 1110 and a transceiver 1120;

the transceiver 1120 is configured to: sending a first bearer establishment message to a second network node, and sending a second bearer establishment message to the first network node;

Optionally, the first bearer setup message includes at least one of:

5QI information;

a session identifier;

Optionally, the second bearer setup message includes at least one of:

5QI information;

a session identifier;

It should be noted that, the network device provided in fig. 11 can implement all steps of the network device implemented by the network device embodiment applied to the core network node, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the network device embodiment in this embodiment are omitted.

The network device according to another embodiment of the present application may be a second network node or a core network node, as shown in fig. 12, including a transceiver 1210, a processor 1200, a memory 1220, and a program or an instruction stored in the memory 1220 and executable on the processor 1200; the processor 1200 implements the dual resident processes described above when executing the programs or instructions.

The transceiver 1210 is configured to receive and transmit data under the control of the processor 1200.

Wherein in fig. 12, a bus architecture may comprise any number of interconnected buses and bridges, and in particular, one or more processors represented by processor 1200 and various circuits of memory represented by memory 1220, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1210 may be a number of elements, i.e. include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 in performing operations.

It should be noted that, the network device provided in the embodiment of the present application can implement all the method steps implemented in the embodiment of the communication method applied to the network device, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the embodiment of the method in the embodiment are omitted herein.

The readable storage medium of the embodiments of the present application stores a program or an instruction, where the program or the instruction implements the steps in the communication method described above when being executed by a processor, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted here.

Wherein the processor is a processor in the electronic device 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.

It is further noted that the electronic devices described in this specification include, but are not limited to, smartphones, tablets, etc., and that many of the functional components described are referred to as modules in order to more particularly emphasize their implementation independence.

In the present embodiment, the modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be organized as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.

Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices.

Where a module may be implemented in software, taking into account the level of existing hardware technology, a module may be implemented in software, and one skilled in the art may, without regard to cost, build corresponding hardware circuitry, including conventional Very Large Scale Integration (VLSI) circuits or gate arrays, and existing semiconductors such as logic chips, transistors, or other discrete components, to achieve the corresponding functions. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.

The exemplary embodiments described above are described with reference to the drawings, many different forms and embodiments are possible without departing from the spirit and teachings of the present application, and therefore, the present application should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will convey the scope of the disclosure to those skilled in the art. In the drawings, the size of the elements and relative sizes may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Unless otherwise indicated, a range of values includes the upper and lower limits of the range and any subranges therebetween.

While the foregoing is directed to the preferred embodiments of the present application, it should be noted that modifications and adaptations to those embodiments may occur to one skilled in the art and that such modifications and adaptations are intended to be comprehended within the scope of the present application without departing from the principles set forth herein.

Claims

1. A communication method applied to a terminal, comprising:

2. The method of claim 1, wherein the first condition comprises at least one of:

the terminal meets the switching condition of the conditional switching CHO;

3. The method according to claim 1, wherein the method further comprises:

and/or the number of the groups of groups,

4. A method according to claim 1 or 3, characterized in that the method further comprises:

5. A method according to claim 3, characterized in that the activation request message comprises at least one of the following information:

requesting an activated session identification;

packet data convergence protocol PDCP status report;

PDCP sequence number SN;

bit map.

6. The method of claim 1, wherein the activate command comprises:

an activated session identification;

the activated mapped bearer corresponds to the identity of the first bearer.

7. The method of claim 1, wherein the transmitting the data to be transmitted on the first network node over the mapped bearer comprises:

and/or the number of the groups of groups,

8. The method according to claim 1, wherein the method further comprises:

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

9. A communication method applied to a second network node, comprising:

10. The method of claim 9, wherein the first bearer setup message comprises at least one of:

5QI information;

a session identifier;

11. The method according to claim 9, wherein the method further comprises:

receiving an activation request message of the mapping bearer;

12. The method of claim 11, wherein the receiving the activation request message of the map bearer comprises one of:

receiving the activation request message sent by the terminal;

receiving the activation request message sent by a first network node;

and receiving the activation request message sent by the core network node.

13. The method of claim 11, wherein the activation request message includes at least one of the following information:

requesting an activated session identification;

PDCP status reporting;

PDCP SN；

bit map.

14. The method of claim 9, wherein prior to transmitting data to be transmitted on the first network node over the mapped bearer, the method further comprises:

And sending the activation command of the mapping bearer to the terminal.

15. The method of claim 14, wherein the activate command comprises:

an activated session identification;

the activated mapped bearer corresponds to the identity of the first bearer.

16. The method according to claim 9, wherein the method further comprises:

receiving a response message sent by the terminal;

the response message carries at least one of the following information:

PDCP status reporting;

PDCP SN；

bit map.

17. The method of claim 9, wherein transmitting data to be transmitted on the first network node over the mapped bearer comprises:

and/or the number of the groups of groups,

18. A communication method applied to a core network node, comprising:

19. The method of claim 18, wherein the first bearer setup message comprises at least one of:

5QI information;

a session identifier;

20. The method of claim 18, wherein the second bearer setup message comprises at least one of:

5QI information;

a session identifier;

21. A communication device applied to a terminal, comprising:

the first processing module is used for activating the mapping bearer according to the activation command of the second network node under the condition that the switching instruction sent by the first network node is received and/or the terminal meets the first condition;

22. A communications apparatus for use with a second network node, comprising:

23. A communication device for use in a core network node, comprising:

24. A terminal comprising a processor and a transceiver;

the transceiver is used for: under the condition that a switching instruction sent by a first network node is received and/or a terminal meets a first condition, activating a mapping bearing according to an activation command of a second network node;

25. A network device comprising a processor and a transceiver;

wherein the mapped bearer is a mapping of a first bearer of the first network node in a second network node; the first network node is a network node of a first system, and the second network node is a network node of a second system.

26. A network device comprising a processor and a transceiver;

27. A readable storage medium having stored thereon a program or instructions, which when executed by a processor, implements the steps of the communication method according to any of claims 1-8, or the steps of the communication method according to any of claims 9-17, or the steps of the communication method according to any of claims 18-20.