CN115550877A

CN115550877A - Communication system, data processing system and Internet of vehicles

Info

Publication number: CN115550877A
Application number: CN202211097900.3A
Authority: CN
Inventors: 郝文杰; 方翟
Original assignee: Alibaba China Co Ltd
Current assignee: Alibaba China Co Ltd
Priority date: 2022-09-08
Filing date: 2022-09-08
Publication date: 2022-12-30

Abstract

The embodiment of the invention provides a communication system, a data processing system and a vehicle networking, wherein the communication system comprises: a generating device and a first processing subsystem located in a first network, and a receiving device and a second processing subsystem located in a second network. The first processing subsystem firstly carries out protocol conversion on a first data packet which is generated by the generation equipment, supports a first connection-oriented protocol and is limited in cross-network transmission so as to convert the first data packet into a second data packet which supports a second connection-oriented protocol and is not limited in cross-network transmission. Then, the first processing subsystem sends the second data packet to the second processing subsystem by using the long connection between the two processing subsystems so as to realize the cross-network transmission of the data packet. Finally, the second processing subsystem in the second network also restores the second data packet into a first data packet supporting the first connection-oriented protocol, and forwards the first data packet to the receiving device, thereby successfully completing the cross-network transmission of the data packet.

Description

Communication system, data processing system and Internet of vehicles

Technical Field

The invention relates to the technical field of communication, in particular to a communication system, a data processing system and an internet of vehicles.

Background

With the development of the fifth Generation Mobile Communication Technology (5G), the 5G Communication system has been applied to various fields. Such as various application programs installed on the terminal equipment, can provide better service experience for users by means of the 5G communication system. For another example, the vehicle, the drive test system, the vehicle-mounted system and the 5G communication system can form a vehicle networking, and a better automatic driving experience can be provided for a driver by means of the vehicle networking.

In the prior art, in order to reduce the time delay of the terminal device for acquiring data, a User Plane Function (UPF) network element in the 5G communication system may be deployed in a distributed manner, and a Control Plane Function (CPF) network element in the 5G communication system may be deployed in a centralized manner. The deployment mode enables the UPF network element and the CPF network element to operate in different networks, and at the moment, the data packet generated by the UPF network element or the CPF network element needs to be transmitted across networks.

In practice, the transmission of data packets across the network is often limited, resulting in a failure in the transmission of data packets. Therefore, how to implement the cross-network transmission of the data packet becomes an urgent problem to be solved.

Disclosure of Invention

In view of this, embodiments of the present invention provide a communication system, a data processing system, and an internet of vehicles, so as to implement cross-network transmission of data packets.

In a first aspect, an embodiment of the present invention provides a communication system, including: a generating device and a first processing subsystem located in a first network, and a receiving device and a second processing subsystem located in a second network;

the generating device is used for generating a first data packet supporting a first connection-oriented protocol;

the first processing subsystem is used for converting the first data packet to obtain a second data packet supporting a second connection-oriented protocol; sending the second data packet to the second processing subsystem using a long connection established between the first processing subsystem and the second processing subsystem based on the second connection-oriented protocol;

the second processing subsystem is used for restoring the second data packet into the first data packet;

the receiving device is configured to receive the first data packet sent by the second processing subsystem.

In a second aspect, an embodiment of the present invention provides a data processing system, including a first processing subsystem and a second processing subsystem located in different networks;

the first processing subsystem is used for acquiring a first data packet supporting a first connection-oriented protocol; converting the first data packet to obtain a second data packet supporting a second connection-oriented protocol; sending the second data packet to the second processing subsystem using a long connection established between the first processing subsystem and the second processing subsystem based on the second connection-oriented protocol;

and the second processing subsystem is used for restoring the second data packet into the first data packet so that the receiving equipment which is positioned in the same network with the second processing subsystem responds to the first data packet.

In a third aspect, an embodiment of the present invention provides a car networking, including: an in-vehicle system and a communication system; the communication system comprises a first processing subsystem, a second processing subsystem and a control plane function network element, wherein the first processing subsystem and the vehicle-mounted system are positioned in the same network, and the second processing subsystem and the control plane function network element are positioned in different networks;

the vehicle-mounted system is used for generating a first data packet supporting a first connection-oriented protocol;

and the control plane function network element is configured to receive the first data packet sent by the second processing subsystem.

The communication system provided by the embodiment of the invention comprises a generating device and a first processing subsystem which are positioned in a first network, and a receiving device and a second processing subsystem which are positioned in a second network.

Based on the above system, for the first packet generated by the generating device and supporting the first connection-oriented protocol, the first processing subsystem may perform protocol conversion on the first packet to obtain a second packet supporting the second connection-oriented protocol. The first processing subsystem then sends the second data packet to the second processing subsystem, again using the long connection between the two processing subsystems, which is established based on the second connection-oriented protocol. The second processing subsystem may then convert the second packet to a first packet supporting the first connection-oriented protocol and forward the first packet to the receiving device.

Due to the characteristics of the first connection-oriented protocol, a first data packet supporting the protocol is easily limited in the process of transmitting from the first network to the second network (i.e. in the process of cross-network transmission), so that the cross-network transmission of the data packet fails. To this end, the first data packet can be converted into a second data packet supporting the second connection-oriented protocol by means of the protocol conversion capability of the first processing subsystem. Due to the characteristic of the second connection-oriented protocol, the second data packet is not limited in the cross-network transmission process, and at the moment, the second data packet can be transmitted to the second network by virtue of the long connection established between the two processing subsystems, namely, the unlimited cross-network transmission of the data packet is realized.

In addition, since the receiving device can process the data packet supporting the first connection-oriented protocol, the second data packet can be restored to the first data packet supporting the first connection-oriented protocol by using the protocol conversion capability of the second processing subsystem, so that the first data packet can be received and processed by the receiving device, and at this time, the successful cross-network transmission of the data packet is finally completed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a communication system that can be implemented according to an embodiment of the present invention;

fig. 2 is an architecture diagram of a core network in the communication system shown in fig. 1;

fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a complete communication system that can be implemented according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another communication system according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another communication system according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another communication system according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another communication system according to an embodiment of the present invention;

fig. 9 is a schematic diagram of a communication system and a data processing system according to an embodiment of the present invention to implement downlink cross-network transmission of data packets;

fig. 10 is a schematic diagram of a communication system and a data processing system implementing uplink cross-network transmission of data packets according to an embodiment of the present invention;

fig. 11 is a schematic diagram of a communication system and a data processing system according to an embodiment of the present invention, implementing downlink cross-network transmission of a data packet;

fig. 12 is a schematic diagram of a communication system and a data processing system according to an embodiment of the present invention, implementing uplink cross-network transmission of data packets;

FIG. 13 is a block diagram of a data processing system according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a car networking provided in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, but 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 terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and "a" and "an" generally include at least two, but do not exclude at least one, unless the context clearly dictates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a recognition", depending on the context. Similarly, the phrases "if determined" or "if identified (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when identified (a stated condition or event)" or "in response to an identification (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a good or system that comprises the element.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The features of the embodiments and examples described below may be combined with each other without conflict between the embodiments. In addition, the sequence of steps in each method embodiment described below is only an example and is not strictly limited. Before describing the communication system and the service system provided by the embodiments of the present invention in detail, the reason for the failure of the packet transmission across networks may be explained.

Fig. 1 is a communication system that can be implemented, and may specifically include a Radio Access Network (RAN), a core Network, and a Data Network (DN). A terminal device, that is, a User Equipment (UE for short), may access a core network by using an access device in a radio access network, and further implement bidirectional data interaction with a data network. Alternatively, the access device may be a 5G base station (gNB).

Alternatively, the network architecture of the core network in the communication system shown in fig. 1 may also be as shown in fig. 2. The core network may include: a Network Slice Selection Function (NSSF) Network element, a Network Exposure Function (NEF) Network element, a Network Repository Function (NRF) Network element, a Policy Control Function (PCF) Network element, a Unified Data Management (UDM) Network element, an Authentication service Function (AUSF) Network element, an Access and Mobility Management Function (AMF) Network element, a Session Management Function (SMF) Network element, and a Mobility Management Function (MMF) Network element. Each of the above network elements may be referred to as a CPF network element. The core network may also include UPF network elements.

In order to shorten the time delay for the UE to acquire data, as mentioned in the background art, in practice, the access device and the UPF network element in the RAN may be deployed in a distributed manner, that is, the access device and the UPF network element are located in one network, and the CPF network element is located in another network. The access device and the UPF network element may be located at the edge of the network, such as in an internal network of an industrial park, while the CPF network element may be located at a hub, such as in a public cloud network.

And based on the communication system shown in fig. 2, the cross-network transmission of the data packet may generally exist between the access device and the AMF network element, or between the UPF network element and the SMF network element.

The access device and the AMF network element may implement bidirectional Transmission of a data packet by using an N2 interface therebetween, that is, both the access device and the AMF network element support a communication Protocol corresponding to the N2 interface, for example, a first connection-oriented Protocol such as Stream Control Transmission Protocol (SCTP), next Generation Application Protocol (NGAP), and the like, and the data packet supporting the preset Protocol may implement bidirectional Transmission between the access device and the AMF network element. Similarly, the UPF network element and the SMF network element may implement bidirectional transmission of a data packet by using an N4 interface therebetween, that is, both the UPF network element and the SMF network element support a communication Protocol corresponding to the N4 interface, such as a Packet Filter Control Protocol (PFCP), a Session notification Protocol (SAP), and the like, and the data packet supporting the communication Protocol may implement bidirectional transmission therebetween.

Since the data packet transmission between the network element and the access device is bidirectional, the access device, the AMF network element, the SMF network element, and the UPF network element may be respectively used as the generating device and the receiving device in the following embodiments of the present invention. And what these generating devices and receiving devices can handle is a data packet that supports the first connection-oriented protocol.

More specifically, when the generating device is an access device, the corresponding receiving device may be an AMF network element, and at this time, a data packet generated by the access device and supporting the SCTP protocol or the NGAP protocol may be transmitted to the AMF network element as an uplink data packet. Conversely, when the generating device is an AMF network element, the corresponding receiving device may be an access device, and at this time, transmission of the data packet generated by the AMF network element is actually downlink transmission of data. Uplink and downlink data transmission between the AMF network element and the access device is usually performed in a process of accessing the UE to the core network or in a process of maintaining connection after the UE accesses the network.

When the generating device is a UPF network element, the corresponding receiving device may be an SMF network element, and at this time, a data packet generated by the UPF network element, a data packet supporting a PFCP protocol or an SAP protocol may be transmitted to the SMF network element as an uplink data packet. Conversely, when the generating device is an SMF network element, the corresponding receiving device may be a UPF network element, and at this time, the transmission of the data packet generated by the SMF network element is actually downlink transmission of data. Uplink and downlink data transmission between the UPF network element and the SMF network element is commonly found in a connection maintenance process after the UE accesses the network, or in a process of establishing, deleting, and modifying session connection for the UE.

Due to the above mentioned characteristic of the first connection-oriented protocol, after the generating device generates the data packet supporting the first connection-oriented protocol each time, each communication device participating in data packet transmission in the communication system needs to establish a transmission link in real time, and each communication device on the transmission link needs to store the quintuple information of the generating device and the receiving device corresponding to the data packet, so that cross-network transmission of the data packet can be realized according to the quintuple information. However, the storage of a large amount of quintuple information may occupy the memory and processing resources of the communication device, thereby affecting the normal processing of data packets supporting other protocols (such as the second connection-oriented protocol) by the communication device. This effect is particularly noticeable when the packet processing pressure of the entire communication system is too great, and can even lead to a breakdown of the communication system.

In practice, more data packets supporting the second connection-oriented protocol need to be processed by the communication system than data packets supporting the first connection-oriented protocol, so that when the processing pressure of the data packets of the communication system is high, after receiving the data packets supporting the first connection-oriented protocol, the communication device in the communication system can choose to discard or delay the processing of the data packets, thereby ensuring the normal processing of the data packets supporting the second connection-oriented protocol and ensuring the normal operation of the communication system. However, at this time, the data packet supporting the first connection-oriented protocol cannot be normally transmitted from the generating device located in one network to the receiving device located in another network, that is, a failure of cross-network transmission of the data packet occurs.

Common second connection-oriented protocols may include Transmission Control Protocol (TCP), fast UDP network Connections (QUIC), and so on. And for clarity of the following description, the network in which the generating device is located may be referred to as a first network, and the network in which the receiving device is located may be referred to as a second network, which may be, for example, a public network or a private network as described above.

To solve the above problem of transmission failure across networks, fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present invention. The communication system includes: a generating device and a first processing subsystem located in a first network, and a receiving device and a second processing subsystem located in a second network. The generating device, the two processing subsystems and the receiving device are all in communication connection.

The working process of the communication system can be described as follows as a whole: the generating device may generate and send a first data packet supporting a first connection-oriented protocol to a first processing subsystem in the communication system. The first processing subsystem may then perform a protocol conversion on the first packet to obtain a second packet supporting a second connection-oriented protocol. The first processing subsystem then sends the second data packet to a second processing subsystem located in a second network using a long connection established based on a second connection-oriented protocol (e.g., a TCP long connection) between the two processing subsystems. At this time, the transmission of the data packet across the network is completed.

However, since the generating device and the receiving device in the communication system can process the data packet supporting the first connection-oriented protocol, the second data packet transmitted to the second processing subsystem cannot be directly sent to the receiving device, and the second processing subsystem needs to perform a second protocol conversion on the second data packet, that is, the second data packet is restored to the first data packet supporting the first connection-oriented protocol, and finally the first data packet is forwarded to the receiving device, so that the whole transmission process of the data packet is completed.

For example, if the generating device is an access device in the RAN, the first processing subsystem may convert a first data packet supporting the SCTP protocol into a second data packet supporting the TCP protocol, and transmit the second data packet supporting the TCP protocol to the second processing subsystem via a TCP long link. And the second processing subsystem carries out protocol reduction on the second data packet to obtain a first data packet supporting the SCTP protocol again, and finally, the first data packet is sent to the AMF network element, namely, the uplink transmission of the data packet is realized. The downstream transmission of data packets is also similar.

If the generating device is a UPF network element, the first processing subsystem may convert the first data packet supporting the PFCP protocol into a second data packet supporting the TCP protocol, and the second processing subsystem may restore the protocol supported by the second data packet and finally send the first data packet to the SMF network element, thereby implementing uplink transmission of the data packet.

In this embodiment, for a first data packet supporting a first connection-oriented protocol, the first processing subsystem may perform protocol conversion on the first data packet to obtain a second data packet supporting a second connection-oriented protocol. The first processing subsystem then sends the second data packet to the second processing subsystem using the long connection. The second processing subsystem further performs data packet restoration and transmits the restored first data packet to the receiving device.

Due to the characteristics of the first connection-oriented protocol, a first data packet supporting the protocol is easily limited in the process of sending from the first network to the second network (i.e. in the process of cross-network transmission), so that the cross-network transmission fails. For this purpose, the first data packet can be converted into a second data packet supporting the second connection-oriented protocol by means of the protocol conversion capability of the first processing subsystem. Due to the characteristic of the second connection-oriented protocol, the second data packet is not limited in the cross-network transmission process, so that the second data packet can be transmitted to the second network by virtue of the long connection established between the two processing subsystems, namely, the unlimited cross-network transmission of the data packet is realized.

In addition, since the receiving device can process the data packet supporting the first connection-oriented protocol, the second data packet can be restored to the first data packet supporting the first connection-oriented protocol by using the protocol conversion capability of the second processing subsystem, so that the first data packet can be finally received and processed by the receiving device, and at this time, the successful transmission of the data packet is realized.

It should be noted that, alternatively, when the generating device and the receiving device are in the user mode, cross-network transmission of the data packet may be implemented by using the system provided by each of the above and below embodiments of the present invention. When the generating device or the receiving device is in the kernel mode, the generating device or the receiving device needs to be switched to the user mode before the communication system provided by the embodiments of the present invention can be used to realize the cross-network transmission of the data packet.

In practice, there may be transmission of data packets between a generating device and at least one receiving device in a communication system. For example, one SMF element may have packet transmission with multiple UPF elements, and one AMF element may also have packet transmission with multiple access devices. And the first data packet mentioned in the embodiments of the present invention may be pure data content not containing a destination address. Therefore, the first processing subsystem needs to determine which receiving device of the multiple receiving devices the converted data packet needs to be sent to while performing protocol conversion on the first data packet, that is, to determine a target receiving device that receives the first data packet, so as to implement accurate distribution of the data packet.

Fig. 4 is a schematic structural diagram of another communication system according to an embodiment of the present invention. The communication system includes: a generating device and a first processing subsystem located in a first network, and a receiving device and a second processing subsystem located in a second network.

The first processing subsystem in this embodiment may specifically include: the device comprises a first forwarding component in one-to-one correspondence with the receiving device and a protocol conversion component connected with the first forwarding component in communication. And the protocol conversion component also provides at least one interface, and the ports are in one-to-one correspondence with the first forwarding components.

The specific procedure of the communication system can be described as: when the first data packet is generated, the corresponding destination address of the first data packet can be determined. The destination address is a network address of a destination forwarding group receiving the first packet in the first network, and the destination forwarding component is any one of the first forwarding components. Then, the generating device may send the first packet to the target forwarding component having the destination address according to the destination address through the physical port provided by the generating device. Then, the destination forwarding component may send the first data packet to the protocol conversion component according to the assigned destination port provided by the protocol conversion component, so that the protocol conversion component performs protocol conversion on the first data packet received through the destination port, thereby obtaining a second data packet. Finally, the second data packet may be further transmitted to the second processing subsystem, so that the second processing subsystem restores the second data packet to the first data packet and sends the first data packet to the target receiving device.

Alternatively, the destination address may be determined by: if the generating device knows the target device identifier of the target receiving device that receives the first data packet when generating the first data packet, the generating device may determine, in the first forwarding component, a target forwarding component that also has the device identifier according to the target device identifier. If the receiving device and the first forwarding component can be regarded as a node in the communication system, the device identifier can be regarded as a node name. And then determining the network address of the target forwarding component in the first network, namely the destination address, according to the pre-established association relationship between the device identifier of the first forwarding component and the network address of the first forwarding component in the first network.

Wherein, the first forwarding component and the receiving device having the same identification device may also be considered to have a corresponding relationship. The network address and the port of the first forwarding component may be allocated when the first forwarding component is created, and the device identifier of the first forwarding component may also be set according to the device identifier of the receiving device when the first forwarding component is created, so that the first forwarding component and the receiving device having the corresponding relationship have the same device identifier. After the first forwarding component is created, the generating device may further establish an association relationship between the device identifier and the network address of the first forwarding component. The specific creation process of the first forwarding component can be referred to the related description in the following embodiments.

Optionally, the specific conversion process of the protocol conversion component on the first data packet may be: the protocol conversion component may locally store a corresponding relationship between the attribute identifier of the receiving device and the interface provided by the protocol conversion component. After the protocol conversion component acquires the first data packet through the target port, on one hand, protocol conversion can be carried out on the first data packet to obtain a conversion result; on the other hand, the target attribute identification of the target receiving device can also be determined according to the corresponding relation stored locally. Finally, the second data packet may be formed by the target attribute identification and the conversion result of the first data packet.

The attribute identifier of any receiving device including the target receiving device may include a device identifier of the receiving device and a cluster identifier of a device cluster to which the receiving device belongs, and then the target attribute identifier of the target receiving device may include a target device identifier and a target cluster identifier. The device identification and the cluster identification of the receiving device respectively have a corresponding relationship with the port provided by the assigned protocol conversion component.

As for the cluster to which the receiving device belongs, as can be known from the above description, the second processing subsystem may provide the protocol recovery and forwarding service of the data packet for a plurality of receiving devices, and then the plurality of receiving devices may form at least one cluster, and the receiving devices in the same cluster have the same cluster identifier. Optionally, the second processing subsystem and the cluster of receiving devices may be in a one-to-one relationship or a one-to-many relationship.

Optionally, for the number of the protocol conversion components, since different receiving devices and generating devices support different first connection-oriented protocols in the core network, a special protocol conversion component may be set in the communication system for each first connection-oriented protocol. Alternatively, a protocol conversion module having a plurality of protocol conversion capabilities may be provided.

It should be noted that, for clarity of description, a corresponding relationship between the device identifier of the receiving device and the assigned port may be referred to as a first corresponding relationship, and a corresponding relationship between the attribute identifier of the receiving device and the assigned port may be referred to as a second corresponding relationship, and it is noted that the second corresponding relationship includes the first corresponding relationship. And the above-mentioned corresponding relation can be updated in real time when the receiving device is added or deleted in the communication system.

In this embodiment, the generating device may determine a destination address corresponding to the first data packet while generating the first data packet, and send the destination address to the target forwarding component according to the destination address. The destination forwarding component then forwards the first packet to the protocol conversion component using the assigned destination port. The protocol conversion component can add an attribute identifier to the converted first data packet according to a second corresponding relationship between the pre-stored port and the attribute identifier of the receiving device while performing protocol conversion on the first data packet received from the target port, wherein the attribute identifier is the target device identifier and the target cluster identifier of the target receiving device receiving the first data packet, so as to obtain a second data packet. Therefore, the second processing subsystem can realize accurate forwarding of the data packet based on the target cluster identification and the target device identification.

That is, in this embodiment, the protocol conversion component may add, to the first packet after the protocol conversion, the target attribute identifier of the target receiving device corresponding to the target port according to the correspondence between the locally stored port and the attribute identifier of the receiving device, so as to generate the second packet. The second packet may be considered to contain the destination address (i.e., the destination attribute identifier of the destination receiving device) as compared to the first packet, and therefore, the second processing subsystem may accurately forward the packet to the destination receiving device according to the destination attribute identifier in the second packet.

According to the embodiment shown in fig. 4, the first forwarding component may send the first data packet to the protocol conversion component by using the destination port, so that the protocol conversion component adds the destination attribute identifier according to the destination port, thereby implementing accurate forwarding of the data packet.

It can be seen that, the first forwarding component in the first processing subsystem is an important component for implementing accurate forwarding of the data packet, and for the creation of the first forwarding component, optionally, on the basis of the embodiment shown in fig. 4, the communication system may further include: a container orchestration tool for creating a first forwarding component.

In particular, the container orchestration tool may randomly assign a network address in the first network to the first forwarding components, while also assigning a corresponding port to each first forwarding component based on a first correspondence between the device identification of the receiving device and the port. Optionally, the first correspondence may be stored locally in the container orchestration tool, or the container orchestration tool may obtain the first correspondence from the protocol forwarding component. Alternatively, the container arrangement tool may specifically be kubernets, docker Swarm, openShift, or the like.

In this embodiment, the creation of the first forwarding component may be implemented by using a container arrangement tool deployed in the communication system, so that the first forwarding component is used to implement accurate transmission of the first data packet.

The following may be understood for the attribute identifier, the device identifier, and the cluster identifier mentioned in the embodiment shown in fig. 4: the attribute identification includes a device identification and a cluster identification. The device identification may be a device ID, an identification to uniquely identify the device identity. Similarly, the cluster identifier may be a cluster ID of a cluster to which the device belongs, and is an identifier for uniquely identifying the cluster identity. For example, when the receiving device is a UPF network element, an AMF network element, or an SMF network element, the device identifier may be embodied as a UPF ID, an AMF ID, or an SMF ID, respectively. The cluster identities may be embodied as UP ID, CP1 ID, CP2 ID, respectively.

In practice, the communication system may comprise at least one of the generating device, the first processing subsystem, the receiving device and the second processing subsystem. They may have complex correspondences, for example a first processing subsystem may process data packets generated by at least one generating device. The second processing subsystem may also provide a protocol recovery and forwarding service for the packet for at least one receiving device, that is, the protocol recovery may be performed on the packet sent by the first processing subsystem and the packet may be further forwarded to any one of the plurality of receiving devices. There may also be transmission of data packets between a generating device and at least one receiving device.

In an actual 5G communication system, alternatively, a communication system having the above-described complex correspondence relationship may be as shown in fig. 5. Of course, fig. 5 is merely an exemplary communication system.

In fig. 5, one UPF network element may send a data packet to at least one SMF network element, or one access device may also send a data packet to at least one AMF network element, thereby implementing uplink transmission of the data packet. In the uplink transmission process, the edge processing subsystem in fig. 5 is the first processing subsystem in the above embodiment, and the central processing subsystem in fig. 5 is the second processing subsystem in the above embodiment.

Also in fig. 5, one SMF network element may also send a data packet to at least one UPF network element, or one AMF network element may send a data packet to at least one access device, thereby implementing downlink transmission of the data packet. In the downlink transmission process, the central processing subsystem in fig. 5 is the first processing subsystem, and the edge processing subsystem in fig. 5 is the second processing subsystem.

It should be noted that, in practice, for a complete communication system capable of implementing bidirectional packet transmission across networks, the number of each device in the system may be set according to actual requirements. The communication system provided in the embodiments of the present invention only shows a part of devices in the complete communication system, that is, shows devices necessary for implementing uplink transmission or downlink transmission of data packets.

With the first processing subsystem in the embodiment shown in fig. 4 described above, the first data packet has been able to be transmitted from the generating device to the protocol conversion component, and the second data packet is generated by the protocol conversion component. The process is suitable for uplink transmission and downlink transmission of data packets. Further, the second data packet may be transmitted across the network. However, since the uplink transmission procedure and the downlink transmission procedure of the second packet are different, they will be described separately below.

For the downlink transmission process of the second data packet, the first processing subsystem in the same network as the generating device is the central processing subsystem in the system shown in fig. 5, and the second processing subsystem in the same network as the receiving device is the edge processing subsystem in the system shown in fig. 5.

Based on this, fig. 6 is a schematic structural diagram of another communication system according to an embodiment of the present invention. On the basis of the embodiment shown in fig. 4, the first processing subsystem in the communication system may further include: a second forwarding component.

For the communication system with a complex correspondence relationship shown in fig. 5, a central processing subsystem (i.e., the first processing subsystem in fig. 6) may have communication connections with different edge processing subsystems (i.e., other second processing subsystems and the target second processing subsystem in fig. 6), respectively, and then in the downlink transmission process of the data packet, in order to ensure that the second data packet can be transmitted to the corresponding edge processing subsystem (i.e., the target second processing subsystem in fig. 6), the second forwarding component in the central processing subsystem may forward the second data packet according to the cluster identifier in the second data packet.

Specifically, the second forwarding component may obtain a subscribed identifier stored locally, and if the cluster identifier in the second data packet is different from the subscribed identifier, it indicates that the second forwarding component does not provide a forwarding service for the receiving device having the cluster identifier, and the second data packet is not forwarded. If the cluster identifier in the second data packet is the same as the subscribed identifier, indicating that the second forwarding component is configured to provide a forwarding service for the receiving device having the cluster identifier, the second forwarding component may send the second data packet to the edge processing subsystem corresponding to the cluster identifier included in the second data packet according to a correspondence between the cluster identifier and the edge processing subsystem. The corresponding relation between the cluster identifier and the edge processing subsystem can be obtained when the central processing subsystem and the edge processing subsystem establish communication connection.

Optionally, the second connection-oriented protocol may be a TCP protocol, and correspondingly, the second forwarding component may also be embodied as a TCP server, and the TCP server implements transmission of the second data packet by using a TCP connection between itself and the second processing subsystem.

Optionally, the central processing subsystem (i.e. the first processing subsystem in fig. 6) may further include: message middleware communicatively coupled to the protocol conversion component.

The second data packet generated by the protocol conversion component may be sent to a message middleware, where the message middleware includes multiple data packet queues, and the second data packets having the same cluster identifier belong to the same data packet queue. The second forwarding component may read the packet queue containing the second packet, identified by the cluster as a subscribed identification, directly from the message middleware. The second forwarding component may forward the entire packet queue containing the second packet.

The use of the message middleware can realize the decoupling between the second forwarding component and the protocol conversion component, and the second forwarding component does not need to acquire the second data packet by calling the port of the protocol conversion component in real time.

In this embodiment, for the first processing subsystem (i.e., the central processing subsystem) in the downlink transmission process, the first processing subsystem may further include a second forwarding component. In the downlink transmission process, even if a one-to-many relationship exists between the central processing subsystem and the edge processing subsystem, the second forwarding component can send the second data packet to the corresponding second processing subsystem according to the subscribed identifier, that is, cross-network transmission of the second data packet is realized. In addition, the first processing subsystem can also comprise message middleware, so that the protocol conversion component and the second forwarding component in the first processing subsystem are decoupled, and the protocol conversion and the data packet forwarding are ensured to be carried out quickly without mutual interference. In addition, the contents and the technical effects that are not described in detail in this embodiment can also refer to the related descriptions in the above embodiments, and are not described again here.

For the uplink transmission process of the second data packet, the first processing subsystem in the same network as the generating device is the edge processing subsystem in the system shown in fig. 5, and the second processing subsystem in the same network as the receiving device is the central processing subsystem in the system shown in fig. 5.

Based on this, fig. 7 is a schematic structural diagram of another communication system according to an embodiment of the present invention. On the basis of the embodiment shown in fig. 5, the first processing subsystem in the communication system may further include: a second forwarding component.

For the communication system with complex correspondence shown in fig. 5, during the uplink transmission of the data packet, one edge processing subsystem (i.e., the first processing subsystem in fig. 7) may have a communication connection with one central processing subsystem (i.e., the second processing subsystem in fig. 7), and at this time, the second forwarding component in the edge processing subsystem may directly send the second data packet to the central processing subsystem with a communication connection.

In this embodiment, the first processing subsystem (i.e., the edge processing subsystem) in the uplink transmission process may further include a second forwarding component. In the above-mentioned line transmission process of the data packet, because the edge processing subsystem corresponds to one central processing subsystem, the second forwarding component may directly send the second data packet to the corresponding second processing subsystem (i.e. the central processing subsystem). In addition, the contents and the technical effects that are not described in detail in the embodiment can also be referred to the related description in the above embodiments, and are not described again here.

According to the embodiments shown in fig. 4 to 7 described above, the second data packet has been transmitted across the network by the generating device in the first network to the second processing subsystem in the second network. The following may continue to describe in detail how the second data subsystem may reduce the second data packet to the first data packet for eventual transmission to the target receiving device. And the process of transmitting the data packet from the second transmission network to the target receiving device is the same regardless of the uplink transmission and the downlink transmission of the data packet.

Optionally, fig. 8 is a schematic structural diagram of another communication system according to an embodiment of the present invention. The communication system includes: a generating device and a first processing subsystem located in a first network, and a receiving device and a second processing subsystem located in a second network.

The second processing subsystem in this embodiment may specifically include: a third forwarding component and a protocol restoration component.

Optionally, a second packet supporting the second connection-oriented protocol may be first sent by the first processing subsystem to a third forwarding component in the second processing subsystem. The third forwarding component forwards the second data packet to the protocol restoring component. The protocol reduction component is used for reducing the second data packet into the first data packet, namely, performing protocol conversion on data contents except the target attribute identifier in the second data packet to reduce the first data packet. And then, the protocol reduction component sends the reduced first data packet to the target receiving equipment with the target equipment identification according to the target equipment identification in the second data packet.

Optionally, when the second connection-oriented protocol supported by the second packet is a TCP protocol, the corresponding third forwarding component may also be embodied as a TCP server.

In this embodiment, after the second data packet is transmitted to the second processing subsystem, since the target receiving device can only process the data packet that supports the first connection-oriented protocol, and the second data packet does not support the protocol, the second processing subsystem may further forward the second data packet to the corresponding protocol restoration component according to the third forwarding component included in the second processing subsystem, so that the protocol restoration component performs protocol restoration. Finally, the protocol reduction component sends the reduced first data packet to the target receiving equipment with the target equipment identification according to the target equipment identification in the second data packet. In addition, the contents and the technical effects that are not described in detail in the embodiment can also be referred to the related description in the above embodiments, and are not described again here.

Optionally, in practice, the generating devices may be different functional network elements or access devices, and therefore, the first connection-oriented protocols supported by the first data packets generated by different generating devices may be different, such as the SCTP protocol, the NGAP protocol, or the PFCP protocol mentioned in the foregoing embodiment, and the first data packets supporting different protocols may be subjected to protocol conversion by using different protocol conversion components, and may also be subjected to protocol recovery by using different protocol recovery components. Therefore, optionally, after receiving the first data packet, the first forwarding component may parse the data packet to obtain a type of the data packet, where the type indicates a protocol type supported by the first data packet, and forward the first data packet to the corresponding protocol conversion component according to the type of the data packet, so that the protocol conversion component performs protocol conversion.

Similarly, after receiving the second data packet, the third forwarding component may also parse the data packet to obtain a type of the data packet, where the type indicates a protocol type supported by the first data packet before the second data packet is converted, and forward the second data packet to the corresponding protocol restoration component according to the type of the data packet, so that the protocol restoration component performs protocol restoration.

As described above, in practice, the actual uplink and downlink transmission of the data packet may occur between the AMF network element and the gNB or between the SMF network element and the UPF network element. And the data packet transmission between the AMF network element and the gNB is commonly found in the process of accessing the core network by the UE. Data packet transmission between the SMF network element and the UPF network element is commonly used in the process of establishing a session connection for the UE. After the data packet transmission, the UE realizes the access of the core network and the establishment of the session connection, and at this time, the UE can realize different services, such as traffic internet access, or a live broadcast service mentioned in the background art, and the like.

For convenience of understanding, the following may take a downlink transmission process of a data packet between an SMF network element and a UPF network element as an example, and describe a specific operation process of the communication system provided in the foregoing embodiments.

For the downlink transmission process of the data packet, the generating device is an SMF network element, the receiving device is an UPF network element, the SMF network element and the UPF network element can process the data packet supporting the PFCP protocol, that is, the first data packet generated by the SMF network element supports the PFCP protocol, the first processing subsystem is a central processing subsystem, the second processing subsystem is an edge processing subsystem, and the two processing subsystems communicate with each other through the TCP protocol. Wherein, the central processing subsystem may further include: a first forwarding component, a protocol conversion component, message middleware and a TCP server 1; the edge processing subsystem may further include: TCP server 2 and protocol recovery components. TCP server 1 may also be referred to as a central TCP server and TCP server 2 may also be referred to as an edge TCP server. The protocol conversion component and the protocol recovery component are used for carrying out mutual conversion between the PFCP and the TCP.

Based on the communication system, after the SMF network element generates the first data packet supporting the PFCP protocol, the SMF network element sends the first data packet to the target forwarding component having the same network address as the destination address in the central processing subsystem according to the destination address of the first data packet. The process of determining the destination address may refer to the related description in the embodiment shown in fig. 4, and is not described herein again. The central processing subsystem comprises a plurality of first forwarding components, the number of the first forwarding components is the same as that of UPF network elements connected with the SMF network elements, and the target forwarding component is any one of the first forwarding components.

The target forwarding component then sends the first data packet to the protocol conversion component in the central processing subsystem, reusing the target port assigned at the time of creation. After receiving the first data packet through the target port, the protocol conversion component converts the first data packet from the PFCP protocol into the TCP protocol, and simultaneously determines the target attribute identifier of the target UPF network element corresponding to the target port according to the corresponding relationship between the port and the attribute identifier of the UPF network element, so that the target attribute identifier and the data packet after protocol conversion form a second data packet. The target attribute identification comprises a target cluster identification and a target device identification.

Optionally, the second data packet may also be stored in the message middleware in the form of a queue according to the target cluster identifier included in the second data packet. The TCP server 1 in the central processing subsystem may read the second packet from the message middleware and perform further cross-network forwarding.

Because one SMF network element can perform downlink transmission of data packets with any one UPF network element in a plurality of UPF network element clusters, different UPF network element clusters can respectively belong to different edge processing subsystems,

therefore, after receiving the second data packet, the TCP server 1 may further determine a target edge processing subsystem from the multiple edge processing subsystems according to the target cluster identifier in the second data packet, and forward the second data packet to the TCP server 2 in the target edge processing subsystem, and the TCP server 2 then sends the second data packet to the protocol recovery component in the target edge processing subsystem, so that the component may perform protocol recovery on the second data packet to recover and obtain the first data packet. Finally, the protocol restoration component may send the restored first data packet to the UPF network element having the target device identifier according to the target device identifier in the second data packet.

The downlink transmission process described above can be understood in conjunction with fig. 9.

For the uplink transmission process of the data packet, the receiving device is an SMF network element, the generating device is an UPF network element, the SMF network element and the UPF network element can process the data packet supporting the PFCP protocol, that is, the first data packet generated by the UPF network element supports the PFCP protocol, the first processing subsystem is an edge processing subsystem, the second processing subsystem is a central processing subsystem, and the two processing subsystems communicate with each other through the TCP protocol. Wherein, the edge processing subsystem may further include: a first forwarding component, a protocol conversion component and a TCP server 1; the central processing subsystem may further include: TCP server 2 and protocol recovery components. TCP server 1 may also be referred to as an edge TCP server and TCP server 2 may also be referred to as a central TCP server. The protocol conversion component and the protocol recovery component are used for converting the PFCP and the TCP protocol to each other.

Based on the communication system, after the UPF network element generates the first data packet supporting the PFCP protocol, the UPF network element sends the first data packet to the target forwarding component with the same network address and the same destination address in the edge processing subsystem according to the destination address of the first data packet. The process of determining the destination address may refer to the related description in the embodiment shown in fig. 4, and is not described herein again. The edge processing subsystem comprises a plurality of first forwarding components, the number of the first forwarding components is the same as that of the SMF network elements connected with the UPF network elements, and the target forwarding component is any one of the first forwarding components.

The destination forwarding component then sends the first packet to the protocol conversion component in the edge processing subsystem, reusing the destination port assigned at the time of creation. After receiving the first data packet through the target port, the protocol conversion component converts the first data packet from the PFCP protocol into the TCP protocol, and simultaneously determines the target attribute identification of the target SMF network element corresponding to the target port according to the corresponding relation between the port and the attribute identification of the SMF network element, so that the target attribute identification and the data packet after protocol conversion form a second data packet. The target attribute identification comprises a target cluster identification and a target device identification.

Because a connection relationship exists between one edge processing subsystem and one central processing subsystem, after receiving a second data packet, the TCP server 1 can directly send the data packet to the TCP server 2 in the target central processing subsystem corresponding to the target cluster identifier according to the target cluster identifier, and then the TCP server 2 sends the second data packet to the protocol recovery component in the target central processing subsystem, so that the component can perform protocol recovery on the second data packet to recover and obtain the first data packet. Finally, the protocol restoration component may send the restored first data packet to the SMF network element having the target device identifier according to the target device identifier in the second data packet.

The downlink transmission process described above can be understood in conjunction with fig. 10.

When bidirectional transmission of data packets occurs between the access device gNB and the AMF network element, the specific transmission process is similar to the uplink and downlink transmission process shown in fig. 9 and 10, that is, the generation device and the reception device may be replaced by the gNB or the AMF network element.

In addition, the downlink transmission of the data packet between the SMF network element and the UPF network element, and the downlink transmission process of the data packet between the gNB and the AMF network element can be understood by referring to fig. 11. In fig. 11, for the PFCP protocol and the SCTP protocol, a corresponding protocol transfer component and a corresponding protocol restoration component are provided. Similarly, the uplink transmission process of the data packet between the SMF network element and the UPF network element, and between the gNB and the AMF network element can be understood by referring to fig. 12

According to the system embodiments, the two processing subsystems in each communication system are used for performing protocol conversion, distribution and protocol restoration on the data packet, so that smooth cross-network transmission of the data packet is realized. On this basis, the two processing subsystems in the communication system may also form a data processing system separately, and fig. 13 is a schematic structural diagram of a processing system according to an embodiment of the present invention. The processing system comprises: a first processing subsystem and a second processing subsystem located in different networks.

The first processing subsystem firstly acquires a first data packet supporting a first connection-oriented protocol, and then performs protocol conversion on the first data packet to obtain a second data packet supporting a second connection-oriented protocol. And then, a second data packet is sent to the second processing subsystem by utilizing the long connection established between the first processing subsystem and the second processing subsystem based on the second connection-oriented protocol.

The second processing subsystem reduces the second data packet to a first data packet and further forwards the first data packet to the receiving device, so that the receiving device responds to the first data packet. And the receiving equipment and the second processing subsystem are positioned in the same network.

Due to the characteristics of the first connection-oriented protocol, a first data packet supporting the protocol is easily limited in the process of being sent from the first network to the second network, so that the cross-network transmission fails. For this purpose, the first data packet can be converted into a second data packet supporting the second connection-oriented protocol by means of the protocol conversion capability of the first processing subsystem. Due to the characteristic of the second connection-oriented protocol, the second data packet is not limited in the cross-network transmission process, so that the second data packet can be transmitted to the second network by virtue of the long connection established between the two processing subsystems, namely, the unlimited cross-network transmission of the data packet is realized.

And because the receiving device can process the data packet supporting the first connection oriented protocol, the second data packet can be reduced to the first data packet supporting the first connection oriented protocol by the protocol conversion capability of the second processing subsystem, so that the first data packet can be finally received and processed by the receiving device, and the successful transmission of the data packet is realized at this time.

In addition, the contents and the technical effects that are not described in detail in the embodiment can also be referred to the related description in the above embodiments, and are not described again here.

Optionally, specific components included in the two processing subsystems and functions of each component may be referred to in the related description of the above system embodiments, and are not described herein again. These two processing subsystems can also be used in the processes shown in fig. 9-12.

As mentioned in the background, a better automated driving experience can be provided for the driver by means of a car networking comprising a 5G communication system. For such a scenario, fig. 14 is a schematic structural diagram of a car networking according to an embodiment of the present invention. This car networking can include: an in-vehicle system and a communication system.

The communication system may specifically include a first processing subsystem located in the same network as the vehicle-mounted system, and a second processing subsystem and a control plane function network element located in a different network from the vehicle. Since the first processing subsystem and the on-board system are located in the same network, the first processing subsystem in this embodiment may also be regarded as the edge processing subsystem mentioned in the above embodiments. Similarly, the second processing subsystem in this embodiment may also be considered as the central processing sub-network mentioned in the above embodiments. Optionally, specific structures of the central processing subsystem and the edge processing subsystem may refer to the related descriptions in the above embodiments, and are not described herein again.

The uplink and downlink transmission of data packets can be realized between a vehicle-mounted system installed on a vehicle in the internet of vehicles and a control surface function network element in a communication system. Such bidirectional transmission is often used in connection maintenance procedures after a vehicle is connected to a vehicle network, or in session connection establishment, deletion, and modification procedures for a vehicle equipped with an onboard system.

Specifically, for an upstream transmission process of a data packet, the in-vehicle system may generate a first data packet supporting the first connection-oriented protocol, and then the data packet may be transmitted to the first processing subsystem. The first processing subsystem performs protocol conversion on the first data packet to obtain a second data packet supporting a second connection-oriented protocol. And then, a second data packet is sent to the second processing subsystem by utilizing the long connection established between the first processing subsystem and the second processing subsystem based on the second connection-oriented protocol. And the second processing subsystem performs protocol reduction on the received second data packet, namely, reduces the first data packet, and forwards the first data packet to the control plane function network element. Therefore, uplink transmission of data packets between the vehicle-mounted system and the control plane function network element is realized.

For the uplink transmission process of the data packet, the control plane functional network element may generate a third data packet supporting the first connection-oriented protocol, and send the third data packet to the second processing subsystem. The second processing subsystem is used for carrying out protocol conversion on the third data packet to obtain a fourth data packet supporting a second connection-oriented protocol. And sending a fourth data packet to the first processing subsystem using a long connection established between the first processing subsystem and the second processing subsystem based on a second connection-oriented protocol. And finally, the first processing subsystem carries out protocol reduction on the fourth data packet, namely, a third data packet is reduced, and the third data packet is sent to the vehicle-mounted system. Thus, the downlink transmission of the data packet between the vehicle-mounted system and the control plane functional network element is realized.

For the contents not described in detail in this embodiment and the technical effects that can be achieved, reference may be made to the related description in the foregoing embodiments, and details are not repeated herein.

In practice, the session connection establishment and connection maintenance can be implemented by the vehicle-mounted system and the control plane functional network element performing the uplink and downlink transmission process of the data packet shown in fig. 14. On the basis that the vehicle and the vehicle are in session connection, various data collected by a vehicle-mounted system and a drive test system in the internet of vehicles can be sent to a cloud server by means of a communication system for the vehicle with the automatic driving mode, so that the cloud server determines driving data of the vehicle, and the communication system feeds the driving data back to the vehicle, and automatic driving of the vehicle is achieved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A communication system, comprising: the system comprises a generating device and a first processing subsystem which are positioned in a first network, and a receiving device and a second processing subsystem which are positioned in a second network;

2. The system of claim 1, wherein the first processing subsystem comprises: the first forwarding assemblies correspond to the receiving equipment one by one;

the generation device is configured to send the first data packet to a target forwarding component in the first forwarding component, where the target forwarding component having a correspondence relationship and a target receiving device that receives the first data packet have the same device identifier.

3. The system of claim 2, wherein the first processing subsystem further comprises a protocol conversion component communicatively coupled to the first forwarding component, and wherein the protocol conversion component provides ports in one-to-one correspondence with the first forwarding component;

the target forwarding component is configured to send the first data packet to the protocol conversion component according to the allocated target port of the protocol conversion component;

the protocol conversion component is used for performing protocol conversion on the first data packet sent by the target forwarding component.

4. The system of claim 3, wherein the communication system further comprises: a container orchestration tool to create the target forwarding component; assigning a network address to the target forwarding component; and allocating the target port for the target forwarding component according to the first corresponding relation between the equipment identifier of the receiving equipment and the port provided by the protocol conversion component.

5. The system according to claim 3, wherein the protocol conversion component is configured to determine a target attribute identifier of the target receiving device according to a second correspondence between the attribute identifier of the receiving device and a port provided by the protocol conversion component;

and determining a conversion result and the target attribute identifier as the second data packet, wherein the target attribute identifier comprises a target device identifier of the target receiving device and a target cluster identifier of a device cluster to which the target receiving device belongs.

6. The system of claim 5, wherein the generating device comprises a control plane function network element in a core network, the receiving device comprises a user plane function network element in the core network or an access device in an access network, and the first data packet and the second data packet are downlink data.

7. The system of claim 6, wherein the first processing subsystem further comprises: and the second forwarding component is used for sending the second data packet of which the target cluster identifier is the subscribed identifier to the second processing subsystem corresponding to the target cluster identifier.

8. The system of claim 7, wherein the first processing subsystem comprises: message middleware for receiving the second data packet sent by the protocol conversion component; establishing a data packet queue containing the second data packet according to the cluster identifier in the second data packet;

the second forwarding component is configured to obtain the subscribed identifier stored locally; and acquiring a data packet queue containing the second data packet from the message middleware.

9. The system of claim 5, wherein the generating device comprises a user plane function network element in a core network or an access device in an access network, the receiving device comprises a control plane function network element in the core network, and the first data packet and the second data packet are uplink data;

the first processing subsystem further comprises: a second forwarding component for sending the second data packet to the second processing subsystem.

10. The system of claim 7 or 9, wherein the second processing subsystem comprises: a third forwarding component and a protocol restoration component;

the third forwarding component is configured to receive the second data packet sent by the second forwarding component; sending the second data packet to the protocol recovery component;

the protocol restoring component is used for restoring the second data packet into the first data packet; and sending the first data packet to the target receiving equipment according to the target equipment identification.

11. The system of claim 1, wherein the generating device and the receiving device operate in a user mode.

12. A data processing system, comprising: a first processing subsystem and a second processing subsystem located in different networks;

13. A vehicle networking, comprising: an in-vehicle system and a communication system; the communication system comprises a first processing subsystem, a second processing subsystem and a control plane function network element, wherein the first processing subsystem and the vehicle-mounted system are positioned in the same network, and the second processing subsystem and the control plane function network element are positioned in different networks;

14. The internet of vehicles of claim 13, wherein: the control plane functional network element is configured to generate a third data packet supporting a first connection-oriented protocol;

the second processing subsystem is used for converting the third data packet to obtain a fourth data packet supporting a second connection-oriented protocol; sending the fourth data packet to the first processing subsystem using a long connection established between the first processing subsystem and the second processing subsystem based on the second connection-oriented protocol;

the first processing subsystem is configured to restore the fourth data packet to the third data packet;

and the vehicle-mounted system is used for receiving the third data packet sent by the first processing subsystem.