CN111182580A

CN111182580A - Service transmission method, terminal and network side equipment

Info

Publication number: CN111182580A
Application number: CN201811372259.3A
Authority: CN
Inventors: 康艳超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-11-16
Filing date: 2018-11-16
Publication date: 2020-05-19
Anticipated expiration: 2038-11-16
Also published as: CN111182580B

Abstract

The embodiment of the invention provides a service transmission method, a terminal and network side equipment, wherein the method comprises the following steps: when a terminal accesses a second network through a first network and transmits the service of the second network, transmitting a control plane signaling of the second network through a first QoS stream, and transmitting the service data of the second network through the second QoS stream; the first QoS flow and the second QoS flow are different QoS flows on a protocol data unit session PDU session in the first network. The invention adopts different QoS flows to respectively transmit the control plane signaling and the service data, thereby ensuring the QoS of the service data from the terminal to the second network through the PDU session in the first network.

Description

Service transmission method, terminal and network side equipment

Technical Field

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

Background

With the development of communication technology, a requirement for service continuity between a Non-Public Network (NPN) and a Public Land Mobile Network (PLMN) is proposed in the research process of a wireless Network. The specific description is as follows:

services provided by the PLMN, such as voice services and the like, can be accessed by accessing an NPN network;

services provided by the NPN network can be accessed by accessing the PLMN;

service continuity of services provided by the PLMN between the NPN and the PLMN is ensured;

service continuity of services provided by the NPN network between the NPN and the PLMN is ensured;

when New Radio (NR) is deployed in both PLMN and NPN, it can be guaranteed that the UE is registered to the PLMN (using the PLMN certificate) and to the NPN (using the NPN certificate) at the same time.

In the research discussion, when the terminal accesses the second network service through the first network, the control plane signaling and the service Data from the terminal to the second network are carried through a Protocol Data unit session (PDU session) in the first network. However, the prior art does not provide a specific scheme how to guarantee Quality of Service (QoS) of Service data from the terminal to the second network through the pdu usage in the first network.

Disclosure of Invention

Embodiments of the present invention provide a service transmission method, a terminal, and a network side device, so as to solve a problem how to guarantee QoS of service data from the terminal to a second network through a PDU session in a first network.

In a first aspect, an embodiment of the present invention provides a service transmission method, applied to a terminal, including: when a terminal accesses a second network through a first network and transmits the service of the second network, transmitting a control plane signaling of the second network through a first QoS stream, and transmitting the service data of the second network through the second QoS stream; the first QoS flow and the second QoS flow are different QoS flows on a protocol data unit session PDU session in the first network.

In a second aspect, an embodiment of the present invention provides a service transmission method, which is applied to a network side device in a first network, and includes:

transmitting control plane signaling of a second network on a first quality of service (QoS) flow, and transmitting service data of the second network on a second QoS flow;

the first QoS flow and the second QoS flow are different QoS flows on a protocol data unit session PDU in the first network.

In a third aspect, an embodiment of the present invention provides a service transmission method, which is applied to a network side device in a second network, and includes:

sending a first GTP packet and a second GTP packet to a first network, wherein the first GTP packet is used for transmitting control plane signaling of the second network, and the second GTP packet is used for transmitting service data of the second network;

the first network is used for transmitting a control plane signaling of a second network on a first QoS flow according to the first GTP packet and transmitting service data of the second network on a second QoS flow according to a second GTP packet; the first QoS flow and the second QoS flow are different QoS flows on a protocol data unit session PDU session in the first network.

In a fourth aspect, a service transmission method in an embodiment of the present invention is applied to a network side device in a first network, and includes:

sending a notification message to a terminal, wherein the notification message is used for notifying the terminal to establish a parameter of a PDU session to the second network; the notification message is a message sent by the network side equipment in a mode of configuration message or terminal routing policy URSP;

when the terminal accesses a second network through a first network and transmits the service of the second network, transmitting a control plane signaling of the second network through a first quality of service (QoS) stream, and transmitting the service data of the second network through the second QoS stream; the first QoS flow and the second QoS flow are different QoS flows on the PDU session, and the PDU session is the PDU session on the first network.

In a fifth aspect, an embodiment of the present invention provides a terminal, including:

the first transmission module is used for transmitting a control plane signaling of the second network through the first QoS stream and transmitting service data of the second network through the second QoS stream when the terminal accesses the second network through the first network and transmits the service of the second network;

In a sixth aspect, an embodiment of the present invention provides a network side device, including:

a second transmission module, configured to transmit a control plane signaling of a second network on the first QoS flow, and transmit service data of the second network on the second QoS flow;

In a seventh aspect, an embodiment of the present invention provides a network side device, including:

the first sending module is configured to send a first GTP packet and a second GTP packet to a first network, where the first GTP packet is used to transmit a control plane signaling of a second network, and the second GTP packet is used to transmit service data of the second network;

In an eighth aspect, an embodiment of the present invention provides a network side device, including:

a second sending module, configured to send a notification message to a terminal, where the notification message is used to notify the terminal to establish a parameter of a PDU session to the second network; the notification message is a message sent by the network side equipment in a mode of configuration message or terminal routing policy URSP;

In a ninth aspect, an embodiment of the present invention provides a terminal, including: the service transmission method comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the program realizes the steps of the service transmission method when being executed by the processor.

In a tenth aspect, an embodiment of the present invention provides a network-side device, including: the service transmission method comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the program realizes the steps of the service transmission method when being executed by the processor.

In an eleventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program, when executed by a processor, implements the steps of the service transmission method on the network side device side, or the computer program, when executed by the processor, implements the steps of the service transmission method on the terminal side.

In the embodiment of the invention, when the terminal accesses the second network through the first network and transmits the service of the second network, the control plane signaling of the second network is transmitted through the first QoS flow, and the service data of the second network is transmitted through the second QoS flow. Because different QoS flows are adopted to respectively transmit control plane signaling and service data, QoS of the service data from the terminal to the second network can be guaranteed through the PDSession in the first network.

Drawings

Fig. 1 is a block diagram of a network system to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart of a service transmission method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of AT-command transmission performed by an application layer and an NAS layer of a terminal in a service transmission method according to an embodiment of the present invention;

fig. 4 is a schematic diagram illustrating QoS flow corresponding to PLMN control plane signaling transmission and QoS flow corresponding to PLMN service data transmission when a terminal accesses a PLMN through an NPN and transmits a PLMN service in a service transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the application NPN and NAS NPN layers of FIG. 4 transporting AT-command;

fig. 6 is a schematic diagram illustrating QoS flow corresponding to NPN control surface signaling transmission and QoS flow corresponding to NPN service data transmission when a terminal accesses an NPN through a PLMN and transmits an NPN service in a service transmission method according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the application _ PLMN and NAS _ PLMN layers of fig. 6 for transmitting AT-command;

fig. 8 is one of the service transmission flow charts of a service transmission method according to the embodiment of the present invention;

fig. 9 is a second service transmission flow chart of a service transmission method according to an embodiment of the present invention;

fig. 10 is a flowchart of another service transmission method according to an embodiment of the present invention;

fig. 11 is a flowchart of another service transmission method according to an embodiment of the present invention;

fig. 12 is a flowchart of another service transmission method according to an embodiment of the present invention;

fig. 13 is a block diagram of a terminal according to an embodiment of the present invention;

fig. 14 is a structural diagram of a network side device according to an embodiment of the present invention;

fig. 15 is a block diagram of another network-side device according to an embodiment of the present invention;

fig. 16 is a block diagram of another network-side device provided in the embodiment of the present invention;

fig. 17 is a block diagram of another terminal provided in an embodiment of the present invention;

fig. 18 is a block diagram of another network-side device according to an embodiment of the present invention;

fig. 19 is a block diagram of another network-side device according to an embodiment of the present invention;

fig. 20 is a block diagram of another network-side device according to an embodiment of the present invention.

Detailed Description

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

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

Embodiments of the present invention are described below with reference to the accompanying drawings. The service transmission method, the network side equipment and the terminal provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a 5G system, an Evolved Long Term Evolution (lte) system, or a subsequent lte communication system.

Referring to fig. 1, fig. 1 is a structural diagram of a network system to which an embodiment of the present invention is applicable, and as shown in fig. 1, the network system includes a terminal 11, a first network 12, and a second network 13, where a network-side device may access the second network 13 through the first network 12 and may transmit a service of the second network 13. The first network 12 may be a non-public network or a public land mobile network, and the second network 13 may be a public land mobile network or the second network is the non-public network. Specifically, the first network 12 and the second network 13 are different networks, for example, the first network is a non-public network, and the second network is a public land mobile network; or, the first network is the public land mobile network, and the second network is the non-public network. The terminal 11 may be a user terminal or other terminal-side device, for example: a terminal side Device such as a Mobile phone, a Tablet personal Computer (Tablet personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), it should be noted that a specific type of the terminal 11 is not limited in the embodiment of the present invention.

Referring to fig. 2, fig. 2 is a flowchart of a service transmission method according to an embodiment of the present invention, where the method is applied to a terminal, and as shown in fig. 2, the method includes the following steps:

step 201, when a terminal accesses a second network through a first network and transmits a service of the second network, transmitting a control plane signaling of the second network through a first quality of service (QoS) stream, and transmitting service data of the second network through the second QoS stream;

In this embodiment, the first network and the second network are different networks, for example, the first network is a non-public network, and the second network is a public land mobile network; or, the first network is the public land mobile network, and the second network is the non-public network. That is to say, in this embodiment, the service that the terminal accesses the second network through the first network includes a scheme 1 and a scheme 2, where the scheme 1 is that the terminal accesses the PLMN through the NPN and transmits the PLMN service, and the scheme 2 is that the terminal accesses the NPN through the PLMN and transmits the NPN service.

Specifically, there may be multiple QoS flows in a PDU session, specifically, the 5QI corresponding to the first QoS flow may be a standardized 5QI value agreed in advance, that is, the first QoS flow is a QoS flow corresponding to the standardized 5QI value agreed in advance, and the size of the 5QI may be set according to actual needs, for example, in this embodiment, the 5QI value may be set to 5. In addition, the 5QI value may be a 5QI value corresponding to a default QoS rule (QoS rule) on the PDU session, that is, the first QoS flow is a QoS flow corresponding to a default QoS rule on the first network PDU session, that is, the first QoS flow is a default QoS flow.

For example, in this embodiment, the first QoS flow and the second QoS flow are located in the same PDU session of the first network, or the first QoS flow and the second QoS flow are located in different PDU sessions of the first network.

In addition, it should be noted that, when there are service data transmissions with different QoS requirements in the second network, the terminal may establish multiple corresponding QoS streams for the first network, or may establish one QoS stream to transmit all the service data. Specifically, the service data may have a plurality of different QoS requirements, each QoS requirement corresponds to a type of QoS parameter, and when the service data has different QoS requirements, the number of the second QoS flows may be greater than or equal to 1. That is, the service data with different QoS requirements may be transmitted on the same QoS flow or different QoS flows.

Specifically, in an embodiment, all the service data with different QoS requirements may be transmitted on the QoS flows corresponding to different QoS parameters. Specifically, when the number of the second QoS is greater than 1, each of the second QoS flows is located on different PDU sessions of the first network or each of the second QoS flows is located on the same PDU session of the first network. In this embodiment, the QoS parameter corresponding to the second QoS flow is a QoS parameter required for transmitting service data of the second network, and the QoS parameter corresponding to the second QoS flow includes 5 QI.

In another embodiment, all the service data with different QoS requirements can be transmitted on the QoS flow corresponding to the same QoS parameter. Specifically, when the number of the second QoS flows is 1 and the QoS parameters required for transmitting the service data of the second network include at least two different QoS parameters, the QoS parameter corresponding to the second QoS flow is any one of the at least two different QoS parameters.

It should be noted that, in the internal protocol stack of the terminal registered to the first network, the AT-command between the application layer and the NAS layer of the terminal needs to be extended to support the QoS of the second network control plane signaling and the QoS of the second network traffic data.

Specifically, as shown in fig. 3, the application layer is an application layer, that is, an application layer _1, when the UE is registered in the first network, and the NAS layer is an NAS layer, that is, an NAS _1, when the UE is registered in the first network. And in the internal protocol stack of the terminal registered to the first network, the application layer of the terminal transmits the QoS parameters corresponding to the first QoS flow of the first network and the QoS parameters corresponding to the second QoS flow of the first network to a Non-Access Stratum (NAS) layer of the terminal through an AT-command.

As shown in fig. 4, for the above scheme 1, a protocol layer diagram of the terminal registering in the NPN network is 401, and a protocol layer diagram of the terminal registering in the PLMN is 402, where a dotted line is service data of the PLMN network, and a solid line is control plane signaling. In fig. 4, AT-command between the application layer _ NPN to the NAS _ NPN needs to extend QoS parameters supporting transmission of PLMN control plane signaling and PLMN traffic data, as specifically shown in fig. 5.

As shown in fig. 6, for the above scheme 2, a schematic diagram of a protocol layer for the terminal to register in the PLMN is 601, a schematic diagram of a protocol layer for the terminal to register in the NPN network is 602, where a dotted line is service data of the NPN network, and a solid line is control plane signaling. In fig. 6, AT-command between the application layer _ PLMN and the NAS _ PLMN needs to extend QoS parameters supporting transmission of NPN control plane signaling and QoS parameters of NPN traffic data, as shown in fig. 7 in particular.

Further, the QoS parameter corresponding to the first QoS flow includes a port number of a terminal side of a packet filter, where the port number is a pre-agreed port number value; the port number corresponds to a source port number of an uplink data packet or a destination port number of a downlink data packet.

In this embodiment, when the service data is uplink data, the port number corresponds to a source port number of an uplink data packet, the mapping of the service data may perform data transmission according to the mechanism in the embodiment, when the service data is downlink data, the port number corresponds to a destination port number of a downlink data packet, and the network side device further needs to perform data transmission according to the following mechanism.

Specifically, the network side device in the second network encapsulates the control plane signaling and the service data of the second network in an IP packet or a GPRS Tunneling Protocol (GTP) packet and sends the IP packet or the GPRS tunneling Protocol to the first network. And then mapping, by the first network, the control plane signaling of the second network and the traffic data of the second network to transmit the control plane signaling of the second network through the first QoS stream and to transmit the traffic data of the second network through the second QoS stream.

In an optional embodiment, if the control plane signaling and the service data of the second network are encapsulated in an IP packet, a source IP of a source IP packet of the IP packet is an IP address of the second network, and a destination IP of the IP packet is an IP address allocated to the terminal by the first network. The target IP is obtained from a User Plane Function (UPF) of the first network, and for an IP packet encapsulating control Plane signaling of the second network, a source port number and a destination port number are predetermined port number values.

In another optional embodiment, if the control plane signaling and the service data of the second network are encapsulated in the GTP packet, the network side device of the first network further needs to perform the following steps: establishing a GTP tunnel to a UPF of a first network;

receiving a first GTP packet and a second GTP packet sent by a second network, wherein the first GTP packet is used for transmitting a control plane signaling of the second network, and the second GTP packet is used for transmitting service data of the second network;

wherein the 5QI value in the header of the first GTP packet is used for indicating the QFI of the first QoS flow, and the 5QI value in the header of the second GTP packet is used for indicating the QFI of the second QoS flow.

Wherein the 5QI value in the header of the first GTP packet and the 5QI value in the header of the second GTP packet are used for representing a QoS flow identifier QFI value. The 5QI value in the header of the first GTP packet is a standardized 5QI value agreed in advance; and the 5QI value in the header of the second GTP packet is the 5QI value used for transmitting the service data of the second network.

Specifically, in a 5G system, a QoS Flow ID (QFI) is used to identify a QoS flow; the service data with the same QFI in the PDU session will obtain the same forwarding process (e.g. the same scheduling, the same admission threshold, etc.); the QFI is only required in one PDU session, namely, one PDU session can have a plurality of (at most 64) QoS flows, but the QFI of each QoS flow is different (the value range is 0-63); QFI may be dynamically configured or equal to 5 QI. When a standardized 5QI value is used, the QFI may be set to 5QI, i.e. 5QI and used as QFI, where 5QI is used to indicate QFI.

Further, the 5QI value in the header of the GTP packet corresponding to the control plane signaling of the second network is the predetermined standardized 5QI value; and the 5QI value in the header of the GTP packet corresponding to the service data of the second network is the 5QI value used for transmitting the service data in the second network.

Further, based on the foregoing embodiment, in this embodiment, before the foregoing step 201, the method further includes:

receiving a notification message sent by a network side device of a first network, where the notification message is used to notify the terminal of establishing a parameter of a PDU session to the second network, and the notification message is sent by the network side device in a manner of a configuration message or a terminal Route Selection Policy (UE Route Selection Policy, URSP).

Wherein the configuration message or a traffic description traffic descriptor in the URSP includes a second network connection indication, and the second network connection indication is used to indicate that the required PDU session is a PDU session provided to the second network connection.

In this embodiment, the notification message may be configured by a Policy and Charging Function (PCF), and forwarded to the terminal through another network entity (e.g., an access network) in the first network.

Specifically, the second network connection indication may include a signaling connection indication for indicating a second network control plane signaling connection and/or a data connection indication for indicating a second network user plane data connection. Wherein the second network connection indication describes one or two values of connection capabilities under the traffic description.

In the existing protocol, the traffic descriptor includes the following parameters:

a traffic descriptor,including either:

1)match all traffic descriptor；or

2)at least one of the followings:

A)application identifier(s)；

B)IP 3 tuple(s)as defined in 3GPP TS 23.503[2]；

C)non-IP descriptor(s)；

D)DNN(s)；and

E)one or more connection capabilities；and

in the existing protocol, the values of connection capabilities are as follows:

Bits

8 7 6 5 4 3 2 1

0 0 0 0 0 0 0 1 IMS

0 0 0 0 0 0 1 0 MMS

0 0 0 0 0 1 0 0 SUPL

0 0 0 0 1 0 0 0 Internet

All other values are reserved。

the implementation manners of the second network connection indication include the following manners.

In the method 1, the second network connection indication may be set as a parameter parallel to connectivity capabilities under a traffic descriptor, specifically, the parameter of the traffic descriptor is an a traffic descriptor, an including:

1)match all traffic descriptor；or

2)at least one of the followings:

A)application identifier(s)；

B)IP 3 tuple(s)as defined in 3GPP TS 23.503[2]；

C)non-IP descriptor(s)；

D)DNN(s)；and

E)one or more connection capabilities；and

F) second network connection indication

In the mode 2, the second network connection indication is used as a value of the connection capabilities, that is, a value of the new connection capabilities, and the value of the connection capabilities is specifically represented as follows:

Bits

8 7 6 5 4 3 2 1

0 0 0 0 0 0 0 1 IMS

0 0 0 0 0 0 1 0 MMS

0 0 0 0 0 1 0 0 SUPL

0 0 0 0 1 0 0 0 Internet

00010000 second network connection indication

All other values are reserved；

Mode 3, which represents the second network connection instruction using the IP address information of the second network as IP 3 tuple(s);

mode 4, the second network connection instruction is expressed by using the network name of the second network as DNN.

Further, the configuration message or the traffic description in the URSP further includes a protocol Data unit Session attribute established by the terminal to the second network, where the protocol Data unit Session attribute includes at least one of a Session and Service Continuity Mode (SSC Mode), a network fragment identification (S-NSSAI), a Data Network Name (DNN), a protocol Data unit Session type PDU Session type, and an IP address of the second network.

For a better understanding of the invention, the following detailed description is given by way of two different examples.

Referring to fig. 8, in an embodiment, a terminal accesses a PLMN through an NPN and transmits a PLMN service, where the service transmission flow is as follows:

step 1, a terminal firstly discovers, selects and connects to an NPN network, and then obtains IP connection through NPN;

step 2, the terminal has a Non-3GPP InterWorking Function (N3 IWF) selection strategy for configuring the PLMN, and adopts a relevant mechanism to discover the N3IWF of the PLMN;

and 3, establishing a PDU session to the N3IWF in the NPN, and when the terminal establishes the PDU session for registering to the PLMN, determining a used session and service continuous mode, a network fragment identifier, a data network name, a protocol data unit session type and an IP address of a second network by using a configuration message or URSP. The 5QI in the default QoSrule of the PDU session is 5QI specified by the standard, and is specifically dedicated to transmitting the 5QI specified by the second network (here, PLMN) control plane signaling, for example, the 5QI value may be specified as 5. The port number used is the port number agreed to be allocated for the delivery of control plane signalling of the second network (here the PLMN).

Step 4, the terminal uses PLMN certificate and registration process of non-credit non-3GPP to register to 5G core network of PLMN;

step 5, establishing PDU session of 5GC to PLMN;

and 6, establishing a new QoS flow in the NPN to transmit the service data in the PLMN network. The QoS rule corresponding to the QoS flow is a QoS rule provided by the application that the UE triggers the PDU session establishment in the PLMN in step 5, and includes parameters such as 5 QI.

It should be noted that, when there are data transmissions with different QoS requirements in the PLMN, the UE may repeat step 5 to establish multiple corresponding QoS flows for the PLMN. Optionally, the UE may also establish a QoS flow in the NPN for transmitting service data with different QoS requirements in the PLMN, where the QoS of the QoS flow is a type of QoS requirement among multiple different QoS requirements. An extension to the AT command for terminal application layer and transport in NAS can be as shown in fig. 5. Further, this step 6 may be performed before step 5.

Referring to fig. 9, in another embodiment, the terminal accesses the NPN through the PLMN and transmits the NPN service, and the service transmission flow is as follows:

step 1, a terminal finds, selects and connects to a PLMN, and then obtains an IP connection through the PLMN;

step 2, the terminal discovers the N3IWF of the NPN network according to the configured N3IWF discovery information of the NPN network;

and 3, establishing a PDU session to the N3IWF in the PLMN, wherein when the PDU session is established, the terminal determines the used session and service continuous mode, the network fragment identification, the data network name, the protocol data unit session type and the IP address of the second network by using the configuration message or the URSP for registering to the NPN. The 5QI in the default QoSrule of the PDU session is 5QI specified by the standard, and is specifically 5QI specified for transmitting the second network (here, NPN) control plane signaling, for example, the 5QI value may be specified as 5. The port number used is the port number agreed to be allocated for the transfer of control plane signalling of the second network (here NPN).

Step 4, the terminal uses the NPN certificate and the registration process of the non-credit non-3GPP to register in the NPN network;

and step 5, the terminal establishes a PDU session to the NPN.

And 6, establishing a new QoS flow in the PLMN to transmit service data in the NPN, wherein a QoS rule corresponding to the QoS flow is a QoS rule provided by the application established by the terminal in the NPN trigger PDU session in the step 5, and the QoS rule comprises parameters such as 5 QI.

It should be noted that, when there are data transmissions with different QoS requirements in the NPN, the UE may repeat step 6 to establish a plurality of corresponding QoS flows for the PLMN. Optionally, the UE may also establish a QoS flow in the PLMN, where the QoS flow is used to transmit service data with different QoS requirements in the NPN, and the QoS of the QoS flow at this time is one of the QoS requirements of multiple different QoS requirements. An extension to the AT command for terminal application layer and transport in NAS can be as shown in fig. 7. Further, this step 6 may be performed before step 5.

In the embodiment of the invention, when the terminal accesses the second network through the first network and transmits the service of the second network, the control plane signaling of the second network is transmitted through the first QoS flow, and the service data of the second network is transmitted through the second QoS flow. Because different QoS flows are adopted to respectively transmit control plane signaling and service data, the QoS of the service data from the terminal to the second network can be ensured through PDU session in the first network. In addition, only by extending the AT-command to transmit the QoS parameters of the control plane signaling of the second network and the QoS parameters of the traffic data of the second network, no new control signaling is needed to be added, so that the QoS support for the traffic data transmission of the second network can be completed with less signaling cost and AT-command extension.

Referring to fig. 10, fig. 10 is a flowchart of another method for indicating a service transmission method according to an embodiment of the present invention, where the method is applied to a network side device in a first network, and as shown in fig. 10, the method includes the following steps:

step 1001, transmitting a control plane signaling of a second network on a first quality of service (QoS) flow, and transmitting service data of the second network on a second QoS flow;

Optionally, the first QoS flow and the second QoS flow are located in the same PDU session of the first network, or in different PDU sessions of the first network.

Optionally, the number of the second QoS flows is greater than or equal to 1.

Optionally, when the number of the second QoS flows is greater than 1, each of the second QoS flows is located in a different PDU session of the first network or each of the second QoS flows is located in the same PDU session of the first network.

Optionally, the QoS parameter corresponding to the second QoS flow is a QoS parameter required for transmitting service data of the second network, and the QoS parameter corresponding to the second QoS flow includes 5 QI.

Optionally, when the number of the second QoS flows is 1 and the QoS parameters required for transmitting the service data of the second network include at least two different QoS parameters, the QoS parameter corresponding to the second QoS flow is any one of the at least two different QoS parameters.

Optionally, the 5QI corresponding to the first QoS flow is a standardized 5QI value agreed in advance.

Optionally, the QoS parameter corresponding to the first QoS flow includes a port number at a terminal side of a packet filter, where the port number is a pre-agreed port number value; the port number corresponds to a source port number of an uplink data packet or a destination port number of a downlink data packet.

Optionally, the first network is a non-public network, and the second network is a public land mobile network;

or, the first network is a public land mobile network, and the second network is a non-public network.

Optionally, when the second network encapsulates the control-plane signaling of the second network and the traffic data of the second network through a GTP packet, the transmitting the control-plane signaling of the second network on the first QoS flow further includes, before transmitting the traffic data of the second network on the second QoS flow:

establishing a GTP tunnel to a first network UPF;

Optionally, the 5QI value in the header of the first GTP packet and the 5QI value in the header of the second GTP packet are used to indicate the QoS flow identifier QFI value.

Optionally, the 5QI value in the header of the first GTP packet is a standardized 5QI value agreed in advance; and the 5QI value in the header of the second GTP packet is the 5QI value used for transmitting the service data of the second network.

It should be noted that, this embodiment is used as an implementation of the network-side device of the first network corresponding to the embodiment shown in fig. 2, and specific implementations thereof may refer to the relevant description of the embodiment shown in fig. 2 and achieve the same beneficial effects, and are not described herein again to avoid repeated descriptions. In this embodiment, the network side device may be a UPF in the first network.

Referring to fig. 11, fig. 11 is a flowchart of another method for indicating a service transmission method according to an embodiment of the present invention, where the method is applied to a network side device in a second network, and as shown in fig. 11, the method includes the following steps:

step 1101, sending a first GTP packet and a second GTP packet to a first network, where the first GTP packet is used for transmitting a control plane signaling of a second network, and the second GTP packet is used for transmitting service data of the second network;

Optionally, a 5QI value in the header of the first GTP packet is used to indicate the QFI of the first QoS flow, and a 5QI value in the header of the second GTP packet is used to indicate the QFI of the second QoS flow.

The terminal comprises a transmission module, a first QoS flow and a second QoS flow, wherein the transmission module is used for transmitting a control plane signaling of the second network through the first QoS flow and transmitting the service data of the second network through the second QoS flow when the terminal accesses the second network through the first network and transmits the service data of the second network;

It should be noted that, this embodiment is used as an implementation of the network-side device of the second network corresponding to the embodiment shown in fig. 2, and specific implementations thereof may refer to the relevant description of the embodiment shown in fig. 2 and achieve the same beneficial effects, and are not described herein again to avoid repeated descriptions. In this embodiment, the network-side device may be an N3IWF in the second network.

Referring to fig. 12, fig. 12 is a flowchart of another method for indicating a service transmission method according to an embodiment of the present invention, where the method is applied to a network side device in a first network, and as shown in fig. 12, the method includes the following steps:

step 1201, sending a notification message to a terminal, where the notification message is used to notify the terminal to establish a parameter of a PDU session to the second network; the notification message is a message sent by the network side equipment in a mode of configuration message or terminal routing policy URSP;

Optionally, the configuration message or the traffic description traffic descriptor in the URSP includes a second network connection indication, where the second network connection indication is used to indicate that the required PDU session is a PDU session provided to the second network connection.

Optionally, the second network connection indication includes a signaling connection indication for indicating a second network control plane signaling connection and/or a data connection indication for indicating a second network user plane data connection.

Optionally, the second network connection indication describes one or two values of connection capability for the traffic.

Optionally, the configuration message or the traffic description in the URSP further includes a protocol data unit session attribute that the terminal establishes to the second network, where the protocol data unit session attribute includes at least one of a session and service continuity mode, a network fragment identifier, a data network name, a protocol data unit session type, and an IP address of the second network.

It should be noted that, this embodiment is used as an implementation of the network-side device of the second network corresponding to the embodiment shown in fig. 2, and specific implementations thereof may refer to the relevant description of the embodiment shown in fig. 2 and achieve the same beneficial effects, and are not described herein again to avoid repeated descriptions. In this embodiment, the network side device may be a PCF in a first network.

Referring to fig. 13, fig. 13 is a structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 13, a terminal 1300 includes:

a first transmission module 1301, configured to transmit a control plane signaling of a second network through a first QoS stream and transmit service data of the second network through a second QoS stream when a terminal accesses the second network through a first network and transmits the service data of the second network;

Optionally, the number of the second QoS flows is greater than or equal to 1.

Optionally, when the number of the second QoS flows is greater than 1, each of the second QoS flows is located in a different PDU session of the first network or in the same PDU session of the first network.

Optionally, in the internal protocol stack in which the terminal is registered in the first network, the application layer of the terminal transmits, to the NAS layer of the terminal, the QoS parameter corresponding to the first QoS flow of the first network and the QoS parameter corresponding to the second QoS flow of the first network through an AT-command.

Optionally, the first transmission module 1301 is further configured to receive a notification message sent by a network side device of the first network, where the notification message is used to notify the terminal to establish a parameter of a PDU session to the second network, and the notification message is sent by the network side device through a configuration message or a terminal routing policy, URSP.

Optionally, the configuration message or the traffic description in the URSP includes a second network connection indication, where the second network connection indication is used to indicate that the required PDU session is a PDU session provided to the second network connection.

or, the first network is a public land mobile network, and the second network is the non-public network.

Optionally, the first QoS flow is a QoS flow corresponding to a default QoS rule on the first network PDU session.

The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the method embodiment of fig. 2, and is not described here again to avoid repetition.

Referring to fig. 14, fig. 14 is a structural diagram of a network side device according to an embodiment of the present invention, and as shown in fig. 14, a network side device 1400 includes:

a second transmission module 1401, configured to transmit a control plane signaling of the second network on the first QoS flow, and transmit service data of the second network on the second QoS flow;

Optionally, the number of the second QoS flows is greater than or equal to 1.

Optionally, in a case that the second network encapsulates the control plane signaling of the second network and the service data of the second network through a GTP packet, the network side device further includes:

a transmission establishing module for establishing a GTP tunnel to a first network UPF;

the second transmission module is further configured to 1401 receive a first GTP packet and a second GTP packet sent by a second network, where the first GTP packet is used to transmit a control plane signaling of the second network, and the second GTP packet is used to transmit service data of the second network;

The network side device provided in the embodiment of the present invention can implement each process implemented by the network side device in the method embodiment of fig. 10, and is not described here again to avoid repetition. It should be noted that the first network includes an access network, a UPF, and a PCF, and the network-side device is a UPF.

Referring to fig. 15, fig. 15 is a structural diagram of a network side device according to an embodiment of the present invention, and as shown in fig. 15, a network side device 1500 includes:

a first sending module 1501, configured to send a first GTP packet and a second GTP packet to a first network, where the first GTP packet is used to transmit a control plane signaling of a second network, and the second GTP packet is used to transmit service data of the second network;

The network side device provided in the embodiment of the present invention can implement each process implemented by the network side device in the method embodiment of fig. 11, and is not described herein again to avoid repetition. It should be noted that the second network includes an access network and a core network, the network-side device is an access network, and the access network may be an N3 IWF.

Referring to fig. 16, fig. 16 is a structural diagram of a network side device according to an embodiment of the present invention, and as shown in fig. 16, a network side device 1600 includes:

a second sending module 1601, configured to send a notification message to a terminal, where the notification message is used to notify the terminal to establish a parameter of a PDU session to the second network; the notification message is a message sent by the network side equipment in a mode of configuration message or terminal routing policy URSP;

The network side device provided in the embodiment of the present invention can implement each process implemented by the network side device in the method embodiment of fig. 12, and is not described herein again to avoid repetition. It should be noted that the first network includes an access network, a UPF, and a PCF, and the network-side device is a PCF.

Fig. 17 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention.

The terminal 1700 includes, but is not limited to: radio frequency unit 1701, network module 1702, audio output unit 1703, input unit 1704, sensor 1705, display unit 1706, user input unit 1707, interface unit 1708, memory 1709, processor 1710, and power supply 1711. Those skilled in the art will appreciate that the terminal configuration shown in fig. 17 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

A radio frequency unit 1701, configured to transmit a control plane signaling of a second network through a first QoS stream and transmit service data of the second network through a second QoS stream when a terminal accesses the second network through a first network and transmits the service data of the second network;

Optionally, the number of the second QoS flows is greater than or equal to 1.

Optionally, the radio frequency unit 1701 is further configured to receive a notification message sent by a network side device of the first network, where the notification message is used to notify the terminal to establish a parameter of a PDU session to the second network, and the notification message is sent by the network side device in a manner of a configuration message or a terminal routing policy URSP.

It should be understood that, in the embodiment of the present invention, the rf unit 1701 may be configured to receive and transmit signals during a message transmission or a call, and specifically, receive downlink data from a base station and then process the received downlink data to the processor 1710; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 1701 includes, but is not limited to, an antenna, at least one amplifier, transceiver, coupler, low noise amplifier, duplexer, and the like. The radio frequency unit 1701 may also communicate with a network and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user via the network module 1702, such as to assist the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.

The audio output unit 1703 may convert audio data received by the radio frequency unit 1701 or the network module 1702 or stored in the memory 1709 into an audio signal and output as sound. Also, the audio output unit 1703 may provide audio output related to a specific function performed by the terminal 1700 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 1703 includes a speaker, a buzzer, a receiver, and the like.

Input unit 1704 is used to receive audio or video signals. The input Unit 1704 may include a Graphics Processing Unit (GPU) 17041 and a microphone 17042, the Graphics processor 17041 Processing image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 1706. The image frames processed by the graphics processor 17041 may be stored in the memory 1709 (or other storage medium) or transmitted via the radio frequency unit 1701 or the network module 1702. The microphone 17042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 1701 in the case of the phone call mode.

Terminal 1700 also includes at least one sensor 1705, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 17061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 17061 and/or a backlight when the terminal 1700 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 1705 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 1706 is used to display information input by the user or information provided to the user. The Display unit 1706 may include a Display panel 17061, and the Display panel 17061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 1707 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 1707 includes a touch panel 17071 and other input devices 17072. Touch panel 17071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on touch panel 17071 or near touch panel 17071 using a finger, stylus, or any other suitable object or attachment). The touch panel 17071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1710, and receives and executes commands sent by the processor 1710. In addition, the touch panel 17071 can be implemented by various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to touch panel 17071, user input unit 1707 may include other input devices 17072. In particular, the other input devices 17072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.

Further, the touch panel 17071 can be overlaid on the display panel 17061, and when the touch panel 17071 detects a touch operation on or near the touch panel, the touch operation is transmitted to the processor 1710 to determine the type of the touch event, and then the processor 1710 provides a corresponding visual output on the display panel 17061 according to the type of the touch event. Although the touch panel 17071 and the display panel 17061 are shown in fig. 17 as two separate components to implement the input and output functions of the terminal, in some embodiments, the touch panel 17071 may be integrated with the display panel 17061 to implement the input and output functions of the terminal, which is not limited herein.

Interface unit 1708 is an interface for connecting an external device to terminal 1700. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. Interface unit 1708 may be used to receive input from an external device (e.g., data information, power, etc.) and transmit the received input to one or more elements within terminal 1700 or may be used to transmit data between terminal 1700 and an external device.

The memory 1709 may be used to store software programs as well as various data. The memory 1709 may mainly include a program storage area and a data storage area, where the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 1709 may include high speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid state storage device.

The processor 1710 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 1709 and calling data stored in the memory 1709, thereby integrally monitoring the terminal. Processor 1710 may include one or more processing units; preferably, the processor 1710 can integrate an application processor, which primarily handles operating systems, user interfaces, application programs, etc., and a modem processor, which primarily handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 1710.

Terminal 1700 may also include a power supply 1711 (e.g., a battery) for powering the various components, and preferably, power supply 1711 may be logically coupled to processor 1710 via a power management system that provides functionality for managing charging, discharging, and power consumption.

In addition, the terminal 1700 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 1710, a memory 1709, and a computer program stored in the memory 1709 and capable of running on the processor 1710, where the computer program, when executed by the processor 1710, implements each process of the service transmission method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.

Referring to fig. 18, fig. 18 is a block diagram of another network-side device according to an embodiment of the present invention, and as shown in fig. 18, the network-side device 1800 includes: a processor 1801, a transceiver 1802, a memory 1803, and a bus interface, wherein:

the transceiver 1802 is configured to transmit control plane signaling of a second network on a first quality of service QoS flow, and transmit service data of the second network on a second QoS flow;

Optionally, the number of the second QoS flows is greater than or equal to 1.

Optionally, in a case that the second network encapsulates the control plane signaling of the second network and the traffic data of the second network through a GTP packet, the processor 1801 is configured to: establishing a GTP tunnel to a first network UPF;

the transceiver 1802 is further configured to: receiving a first GTP packet and a second GTP packet sent by a second network, wherein the first GTP packet is used for transmitting a control plane signaling of the second network, and the second GTP packet is used for transmitting service data of the second network;

In fig. 18, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1801 and various circuits of memory represented by memory 1803 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1802 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1804 may also be an interface to externally interface with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1803 may store data used by the processor 1801 in performing operations.

Preferably, an embodiment of the present invention further provides a network-side device, which includes a processor 1801, a memory 1803, and a computer program stored in the memory 1803 and capable of running on the processor 1801, where the computer program, when executed by the processor 1801, implements each process of the foregoing service transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Referring to fig. 19, fig. 19 is a structural diagram of another network-side device according to an embodiment of the present invention, and as shown in fig. 19, the network-side device 1900 includes: a processor 1901, a transceiver 1902, a memory 1903, and a bus interface, wherein:

the transceiver 1902 is configured to send, to a first network, a first GTP packet and a second GTP packet, where the first GTP packet is used to transmit control plane signaling of a second network, and the second GTP packet is used to transmit service data of the second network;

In FIG. 19, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1901, and various circuits, represented by memory 1903, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1902 may be a plurality of elements including a transmitter and a receiver providing a means for communicating with various other apparatus over a transmission medium. The user interface 1904 may also be an interface capable of interfacing with a desired device externally for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1901 is responsible for managing the bus architecture and general processing, and the memory 1903 may store data used by the processor 1901 in performing operations.

Preferably, an embodiment of the present invention further provides a network-side device, which includes a processor 1901, a memory 1903, and a computer program that is stored in the memory 1903 and is capable of running on the processor 1901, and when the computer program is executed by the processor 1901, the computer program implements each process of the foregoing service transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Referring to fig. 20, fig. 20 is a structural diagram of another network-side device according to an embodiment of the present invention, and as shown in fig. 20, the network-side device 2000 includes: a processor 2001, a transceiver 2002, a memory 2003, and a bus interface, wherein:

the transceiver 2002 is configured to send a notification message to a terminal, where the notification message is used to notify the terminal to establish a parameter of a PDU session to the second network; the notification message is a message sent by the network side equipment in a mode of configuration message or terminal routing policy URSP;

when the terminal accesses a second network through a first network and transmits the service of the second network, transmitting a control plane signaling of the second network through a first quality of service (QoS) stream, and transmitting the service data of the second network through the second QoS stream; the first QoS flow and the second QoS flow are different QoS flows on a protocol data unit session PDU session in the first network.

In fig. 20, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 2001, and various circuits of memory, represented by memory 2003, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 2002 may be a plurality of elements including a transmitter and a receiver providing a means for communicating with various other apparatus over a transmission medium. The user interface 2004 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 2001 is responsible for managing a bus architecture and general processing, and the memory 2003 may store data used by the processor 2001 in performing operations.

Preferably, an embodiment of the present invention further provides a network side device, which includes a processor 2001, a memory 2003, and a computer program stored in the memory 2003 and capable of running on the processor 2001, where the computer program is executed by the processor 2001 to implement each process of the foregoing service transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the service transmission method on the network side device side provided in the embodiment of the present invention, or when the computer program is executed by a processor, the computer program implements each process of the embodiment of the service transmission method on the terminal side provided in the embodiment of the present invention, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a base station) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A service transmission method is applied to a terminal, and is characterized by comprising the following steps:

when a terminal accesses a second network through a first network and transmits the service of the second network, transmitting a control plane signaling of the second network through a first QoS stream, and transmitting the service data of the second network through the second QoS stream;

the first QoS flow and the second QoS flow are different QoS flows on a protocol data unit session PDU session in the first network.

2. The method of claim 1, wherein the first QoS flow and the second QoS flow are located on a same PDU session of the first network or on different PDU sessions of the first network.

3. The method of claim 1, wherein the number of second QoS flows is greater than or equal to 1.

4. The method of claim 3, wherein when the number of the second QoS flows is greater than 1, each of the second QoS flows is located in a different PDU session of the first network or each of the second QoS flows is located in a same PDU session of the first network.

5. The method of claim 3, wherein the QoS parameter corresponding to the second QoS flow is a QoS parameter required for transmitting the traffic data of the second network, and the QoS parameter corresponding to the second QoS flow comprises 5 QI.

6. The method according to claim 3, wherein in case that the number of the second QoS flows is 1 and the QoS parameters required for transmitting the traffic data of the second network include at least two different QoS parameters, the QoS parameter corresponding to the second QoS flow is any one of the at least two different QoS parameters.

7. The method according to claim 1, wherein in the internal protocol stack where the terminal is registered to the first network, the application layer of the terminal transmits the QoS parameters corresponding to the first QoS flow of the first network and the QoS parameters corresponding to the second QoS flow of the first network to the NAS layer of the terminal through an AT-command.

8. The method of claim 1, wherein the 5QI corresponding to the first QoS flow is a pre-agreed standardized 5QI value.

9. The method according to claim 1, wherein the QoS parameter corresponding to the first QoS flow includes a port number on a terminal side of a packet filter, and the port number is a pre-agreed port number value; the port number corresponds to a source port number of an uplink data packet or a destination port number of a downlink data packet.

10. The method of claim 1, wherein before the terminal transmits the control plane signaling of the second network through the first QoS flow and transmits the traffic data of the second network through the second QoS flow when accessing the traffic of the second network through the first network, the method further comprises:

receiving a notification message sent by a network side device of a first network, where the notification message is used to notify the terminal to establish a parameter of a PDU session to the second network, and the notification message is sent by the network side device in a manner of a configuration message or a terminal routing policy, URSP.

11. The method of claim 10, wherein the configuration message or a traffic description traffic descriptor in the URSP comprises a second network connection indication indicating that the required PDU session is a PDU session provided to the second network connection.

12. The method according to claim 11, wherein the second network connection indication comprises a signaling connection indication indicating a second network control plane signaling connection and/or a data connection indication indicating a second network user plane data connection.

13. The method of claim 11 wherein the second network connection indication describes one or both values of connectivity under the traffic description.

14. The method of claim 10, wherein the configuration message or the traffic description in the URSP further comprises protocol data unit session attributes for the terminal to establish to the second network, the protocol data unit session attributes comprising at least one of session and service continuity mode, network fragment identification, data network name, protocol data unit session type, and IP address of the second network.

15. The method of claim 1, wherein the first network is a non-public network and the second network is a public land mobile network;

16. The method of claim 1, wherein the first QoS flow is a QoS flow corresponding to a default QoS rule on the first network pdu usage.

17. A service transmission method is applied to a network side device in a first network, and is characterized by comprising the following steps:

18. The method of claim 17, wherein the first QoS flow and the second QoS flow are located on a same PDU session of the first network or on different PDU sessions of the first network.

19. The method of claim 17, wherein the number of second QoS flows is greater than or equal to 1.

20. The method of claim 19, wherein when the number of the second QoS flows is greater than 1, each of the second QoS flows is located in a different PDU session of the first network or each of the second QoS flows is located in a same PDU session of the first network.

21. The method of claim 19, wherein the QoS parameter corresponding to the second QoS flow is a QoS parameter required for transmitting the traffic data of the second network, and wherein the QoS parameter corresponding to the second QoS flow comprises 5 QI.

22. The method of claim 19, wherein if the number of the second QoS flows is 1 and the QoS parameters required for transmitting the traffic data of the second network include at least two different QoS parameters, the QoS parameter corresponding to the second QoS flow is any one of the at least two different QoS parameters.

23. The method of claim 17, wherein the 5QI corresponding to the first QoS flow is a standardized 5QI value agreed in advance.

24. The method of claim 17, wherein the QoS parameter corresponding to the first QoS flow includes a port number on a terminal side of a packet filter, and the port number is a pre-agreed port number value; the port number corresponds to a source port number of an uplink data packet or a destination port number of a downlink data packet.

25. The method of claim 17, wherein the first network is a non-public network and the second network is a public land mobile network;

26. The method of claim 17, wherein in a case that the second network encapsulates the control plane signaling of the second network and the traffic data of the second network through a GTP packet, the transmitting the control plane signaling of the second network on the first QoS flow further comprises, before transmitting the traffic data of the second network on the second QoS flow transmission:

establishing a GTP tunnel to a first network User Plane Function (UPF);

27. The method of claim 26, wherein a 5QI value in the header of the first GTP packet and a 5QI value in the header of the second GTP packet are used to indicate a QoS flow identification QFI value.

28. The method of claim 26, wherein the 5QI value in the header of the first GTP packet is a predefined standardized 5QI value; and the 5QI value in the header of the second GTP packet is the 5QI value used for transmitting the service data of the second network.

29. A service transmission method is applied to network side equipment in a second network, and is characterized by comprising the following steps:

30. The method of claim 29, wherein a 5QI value in the header of the first GTP packet is used to indicate QFI of the first QoS flow, and wherein a 5QI value in the header of the second GTP packet is used to indicate QFI of the second QoS flow.

31. The method of claim 29, wherein the 5QI value in the header of the first GTP packet is a predefined standardized 5QI value; and the 5QI value in the header of the second GTP packet is the 5QI value used for transmitting the service data of the second network.

32. A service transmission method is applied to a network side device in a first network, and is characterized in that,

sending a notification message to a terminal, wherein the notification message is used for notifying the terminal to establish a parameter of a PDScess to a second network; the notification message is a message sent by the network side equipment in a mode of configuration message or terminal routing policy URSP;

33. The method of claim 32, wherein the configuration message or a traffic description traffic descriptor in the URSP comprises a second network connection indication indicating that the required PDU session is a PDU session provided to the second network connection.

34. The method according to claim 33, wherein the second network connection indication comprises a signaling connection indication indicating a second network control plane signaling connection and/or a data connection indication indicating a second network user plane data connection.

35. The method of claim 33 wherein the second network connection indication describes one or both values of connectivity under the traffic description.

36. The method of claim 32, wherein the configuration message or the traffic description in the URSP further comprises protocol data unit session attributes for the terminal to establish to the second network, the protocol data unit session attributes comprising at least one of session and service continuity mode, network fragment identification, data network name, protocol data unit session type, and IP address of the second network.

37. A terminal, comprising:

the terminal comprises a first transmission module, a second transmission module and a third transmission module, wherein the first transmission module is used for transmitting a control plane signaling of a second network through a first QoS stream and transmitting the service data of the second network through a second QoS stream when the terminal accesses the second network through a first network and transmits the service data of the second network;

38. A network-side device, comprising:

39. A network-side device, comprising:

40. A network-side device, comprising:

41. A terminal, comprising: memory, processor and program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the traffic transmission method according to any of claims 1 to 16.

42. A network-side device, comprising: memory, processor and program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the traffic transmission method according to any of claims 17 to 36.

43. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of a traffic transmission method according to one of the claims 1 to 16, or which computer program, when being executed by a processor, carries out the steps of a traffic transmission method according to one of the claims 17 to 36.