CN114760643A - Data transmission method and communication system - Google Patents
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Abstract
The application discloses a data transmission method and a communication system, wherein the method is applied to a communication network, the communication network comprises an access network node, a transmission network node and a core network node, and the method comprises the following steps: the access network node receives target data to be transmitted, which is sent by a data sender, and sends the target data to the transmission network node; the transmission network node sends the target data to the core network node through a transmission channel corresponding to the service class according to the service class corresponding to the target data; and the core network node receives the target data and sends the target data to a data receiver. In the data transmission process, different service data are decoupled by identifying the service types of different data, and corresponding data transmission channels are allocated to different service types, so that the influence on the transmission of other services when a certain service data transmission fault occurs is avoided, and the data transmission efficiency can be improved.
Description
Technical Field
The present disclosure relates to the field of wireless communication technologies, and in particular, to a data transmission method and a communication system.
Background
In the field of rail transit, a train cluster dispatching system can be generally used, and a train is dispatched through a ground control center, namely a dispatching desk is communicated with a train driver or a platform worker, so that the train operation efficiency is improved.
Please refer to fig. 1, which is a schematic diagram of a conventional train cluster dispatching system. As shown in fig. 1, in a conventional train trunking dispatching system, when a platform staff or a train driver communicates with a ground control center, that is, a dispatching desk, through a trunking handheld terminal, a data transmission method generally includes: receiving data sent by the cluster handheld terminal by the base station; sending the data to a core network via a transport network; the core network checks the control plane service signaling in the data and sends the user plane data in the data to the dispatching server; the data is then sent by the dispatch server to the ground control center.
In the process of implementing the present application, the inventor finds that, in the process of transmitting data by using the above method, service data in the system is not subdivided, but all data are transmitted by using a uniform bandwidth, that is, cluster service and other services are closely coupled, and when a certain service flow has a fault, the cluster service flow may be preempted, thereby affecting the transmission efficiency of the cluster service data.
Disclosure of Invention
It is an object of the embodiments of the present disclosure to provide a new technical solution for data transmission.
In a first aspect of the present disclosure, a data transmission method is provided, where the method is applied to a communication network, where the communication network includes an access network node, a transmission network node, and a core network node, and the method includes:
the access network node receives target data to be transmitted, which is sent by a data sender, and sends the target data to the transmission network node;
the transmission network node sends the target data to the core network node through a transmission channel corresponding to the service type according to the service type corresponding to the target data;
and the core network node receives the target data and sends the target data to a data receiver.
Optionally, the transmission channel is obtained by:
acquiring a total bandwidth corresponding to the transmission network node;
obtaining a target bandwidth quota corresponding to a service class according to a preset corresponding relation between the service class and the bandwidth quota;
and splitting the total bandwidth by a flexible Ethernet technology according to the target bandwidth quota to obtain the transmission channel.
Optionally, when the access network node sends the target data to the transmission network node, the access network node is configured to:
generating a target resource block for bearing the target data, wherein a preset number of blank resource blocks are arranged between the target resource block and other resource blocks at intervals, the other resource blocks are resource blocks bearing other data, and the other data comprise data to be transmitted, which are received by the access network node at a time other than the current time;
and sending the target resource block to the transmission network node.
Optionally, the target data comprises target control plane data and target user plane data; the core network node comprises a control plane data processing sub-node and a user plane data processing sub-node;
before the step of the transmission network node executing the service class corresponding to the target data and sending the target data to the core network node through the transmission channel corresponding to the service class, the transmission network node is further configured to:
and under the condition that the data receiving party is initially accessed, sending the target control surface data to the control surface data processing sub-node.
Optionally, when the transmission network node sends the target data to the core network node through the transmission channel corresponding to the service class according to the service class corresponding to the target data, the transmission network node is configured to:
and sending the target user plane data to the user plane data processing sub-node through the transmission channel.
Optionally, when receiving the target data and sending the target data to a data receiver, the core network node is configured to:
receiving the target control surface data through the control surface data processing sub-node, and performing access check on the target control surface data;
receiving the target user plane data through the user plane data processing sub-node;
and under the condition that the access verification is passed, the user plane data processing sub-node receives data forwarding routing information sent by the control plane data processing sub-node and sends the target user plane data to the data receiving party according to the data forwarding routing information.
Optionally, the core network node includes a plurality of user plane data processing sub-nodes;
when the transmission network node sends the target user plane data to the user plane data processing sub-node through the transmission channel, the transmission network node is configured to:
acquiring the position information of the data sender;
according to the position information, determining a target user plane data processing sub-node which is within a preset distance from the position of the data sender from the plurality of user plane data processing sub-nodes;
and sending the target user plane data to the target user plane data processing sub-node through the transmission channel.
Optionally, the access check comprises at least one of: authority verification, charging verification and admission verification.
Optionally, when the transmission network node sends the target data to the core network node through the transmission channel corresponding to the service class according to the service class corresponding to the target data, the transmission network node is configured to:
determining the transmission channel according to the service class corresponding to the target data, and determining the transmission priority of the target data;
and sending the target data to the core network node through the transmission channel according to the transmission priority.
Optionally, the method is applied to a train cluster scheduling system, and the data sender and the data receiver include a mobile terminal device and a train scheduling server.
In a second aspect of the present disclosure, there is also provided a communication system, including an access network node, a transmission network node, and a core network node;
the access network node comprises: a first memory for storing first executable instructions; a first processor configured to execute the access network node according to the control of the first instruction to perform the steps implemented by the access network node in the method of the first aspect of the disclosure;
the transmission network node comprises: a second memory for storing second executable instructions; a second processor for operating the transmission network node according to the control of the second instruction to perform the steps implemented by the transmission network node in the method of the first aspect of the disclosure;
the core network node comprises: a third memory for storing third executable instructions; a third processor configured to execute the transport network node according to the control of the third instruction to perform the steps implemented by the core network node in the method of the first aspect of the disclosure.
The method has the beneficial effects that when the method is used for data transmission, the access network node, such as a base station, receives target data to be transmitted sent by a data sender and sends the data to the transmission network node; then, the transmission network node receives the target data and transmits the target data to the core network node through a transmission channel corresponding to the service class according to the service class corresponding to the target data; and the core network node forwards the target data to a data receiver. In the data transmission process, different service data are decoupled by identifying the service types of different data, and corresponding data transmission channels are allocated to different service types, so that the influence on the transmission of other services when a certain service data transmission fault occurs is avoided, and the data transmission efficiency can be improved.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1a is a schematic diagram of a conventional train cluster scheduling system.
Fig. 1b is a schematic diagram illustrating processing of control plane data and user plane data in a conventional train trunking dispatching system.
Fig. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram of data transmission by an access network node according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram illustrating a transmission channel split according to an embodiment of the present disclosure.
Fig. 5 is a schematic configuration diagram of a core network node according to an embodiment of the present disclosure.
Fig. 6 is a schematic processing diagram of control plane data and user plane data in a train cluster scheduling system provided by an embodiment of the present disclosure.
Fig. 7 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
< method examples >
Fig. 2 is a schematic flowchart of a data transmission method provided in an embodiment of the present disclosure, where the method is applied to a communication network, and may be specifically implemented by a communication node in the communication network, where the communication node is a node in the communication network for sending, receiving, or forwarding data, and the communication node may be a modem, a hub, a bridge, a switch, a data terminal device, and other devices.
In the specific implementation, the communication network implementing the method may specifically include an access network node, a transmission network node, and a core network node, and first, the access network, the transmission network, the core network, and their corresponding nodes are briefly described below.
AN Access Network (AN) is composed of a series of transmission entities between Service Node Interfaces (SNI) and User Node Interfaces (UNI), and is AN implementation system providing the required transmission bearing capacity for transmitting telecommunication services, and is configured and managed through a Q3 Interface. The access technology of the access network can be generally divided into wired access and wireless access, wherein the wired access generally refers to an optical fiber access technology and a digital subscriber line access technology based on a telephone line; wireless access generally includes fixed wireless access technology, mobile wireless access technology, cellular wireless access technology, satellite wireless access technology, wireless local area network access, and the like; in this embodiment, if there is no special description, the access network node is taken as a wireless access network node for example, and the wireless access network node may be a communication Base Station, that is, a Base Station (Base Station).
A Transmission Network (TN, Transmission Network), also called a bearer Network, is generally used to provide a channel for information Transmission between devices that need information interaction; in a broad sense, a transmission network provides a path between network switching devices connecting various terminal devices; whereas from a narrow perspective, a transmission network generally comprises only transmission equipment and transmission lines; the transmission network node may generally be an optoelectronic transceiver, a Multi-Service Transport Platform (MSTP), and the like, and generally does not include a router and a network switch, and the transmission line thereof may generally include an optical cable, a pipeline, a rod, and the like.
A Core Network (CN), which is the most Core part of a communication Network and is mainly responsible for processing and routing data; the core network node may be, for example, a Mobility Management Entity (MME), a Serving Gateway (SGW), a Packet data network Gateway (PGW), and other devices.
It should be noted that, since the detailed description of the access network, the transmission network, the core network and the corresponding nodes thereof is related to the prior art, the detailed description is omitted here.
As shown in fig. 2, the method of the present embodiment may include the following steps S2100-S2300, which will be described in detail below.
In step S2100, the access network node receives target data to be transmitted, which is sent by a data sender, and sends the target data to the transmission network node.
The target data may be data generated by the mobile terminal device and corresponding to a service of a system, for example, the target data may be data transmitted by the user through the mobile terminal device to confirm whether to execute the scheduling instruction to the scheduling server.
The data sender may be an electronic device, such as a mobile phone, a walkie-talkie, or the like, configured to generate service data and transmit the service data to a data receiver, such as a server, via a communication network. Correspondingly, the data receiving party in the subsequent step S1300 may be an electronic device at the other end of the communication network, and the data receiving party may be a mobile phone, an interphone, or may also be a server.
In this embodiment, the communication network is taken as a communication network applied to the rail transit field, and the train cluster scheduling system applied to the rail transit field of the method is taken as an example for explanation; of course, in the implementation, the method may be applied to other communication systems in other fields, and is not limited specifically here. When the method is applied to a train cluster scheduling system in the field of rail transit, a data sender and a data receiver can be mobile terminal devices, namely a cluster handheld terminal and a train scheduling server, and particularly, the data sender and the data receiver can be referred to relatively, that is, in one data transmission process, one end initiating data transmission can be the data sender, and the other end initiating the data transmission can be referred to as the data receiver.
As described in the background art, in the process of transmitting data by using a communication network, the existing train trunking dispatching system does not subdivide service data in the system, but all data are transmitted by using a uniform bandwidth, that is, trunking services are tightly coupled with other services, so that when a certain service fails to transmit equipment data acquired by a data acquisition service, and a transmission network is blocked, trunking service traffic may be seized, and the reliability and transmission efficiency of trunking service data transmission are affected. In addition, all services in the cluster scheduling system use the same bandwidth and traffic for transmission, and there is also a problem that accurate control cannot be achieved on each service in the cluster, thereby causing inefficient use of traffic and bandwidth.
To solve the problem, the method provided in this embodiment may configure corresponding data transmission policies in each communication node of the communication network, so that each node in the communication network can distinguish transmission data of different systems and different services, and transmit the transmission data of different systems and different services using corresponding bandwidths and limiting flows, which will be described in detail below.
In this step, the access network node, for example, the base station, when sending the target data to the transmission network node, may be configured to: generating a target resource block for bearing the target data, wherein a preset number of blank resource blocks are arranged between the target resource block and other resource blocks at intervals, the other resource blocks are resource blocks bearing other data, and the other data comprise data to be transmitted, which are received by the access network node at a time other than the current time; and sending the target resource block to the transmission network node.
Generally, in the communication field, in the Time domain, the smallest resource granularity is an Orthogonal Frequency Division Multiplexing (OFDM) symbol; on the Frequency Domain (Frequency Domain), the smallest resource granularity is one subcarrier; one OFDM symbol and one subcarrier constitute one time-frequency Resource Element (RE), and when the physical layer performs Resource mapping, the RE is generally used as a basic unit. All OFDM symbols in a time slot (Timeslot) and 12 subcarriers in the frequency domain may form a Resource Block (RB), and when data is transmitted in a communication network, that is, Resource scheduling is performed, scheduling is usually performed using the Resource Block as a basic unit.
Please refer to fig. 3, which is a schematic diagram of an access network node for transmitting data according to an embodiment of the present disclosure. Specifically, in this embodiment, in order to enable each communication node in the communication network to distinguish different transmission data so that they do not interfere with each other, so that the communication nodes can transmit target data by using corresponding transmission channels, when the access network node sends data, a preset number of blank resource blocks may be set between resource blocks carrying data to be transmitted at different times, for example, RB resource 1 and RB resource 2 shown in fig. 3, so that they do not interfere with each other, so that the transmission network node and other nodes in the communication network can conveniently identify data corresponding to different systems and different services.
After step S2100, step S2200 is executed, in which the transmission network node sends the target data to the core network node through a transmission channel corresponding to the service type according to the service type corresponding to the target data.
Specifically, when receiving data sent by an access network node, a transmission network node may identify data corresponding to different systems and different services according to a policy configured by the access network node, so as to obtain the target data sent by the access network node, and obtain a service class corresponding to the target data from the target data; and sending the target data to the core network node through the transmission channel corresponding to the service type according to the service type.
In this embodiment, the transmission channel may be a communication channel logically split from a fixed limit, for example, a bandwidth channel of 50Gbps, and used for transmitting data of a preset service, where the transmission channel may be obtained by: acquiring a total bandwidth corresponding to the transmission network node; obtaining a target bandwidth quota corresponding to a service class according to a preset corresponding relation between the service class and the bandwidth quota; and splitting the total bandwidth by using a Flexible Ethernet technology (Flexe, Flexible Ethernet) according to the target bandwidth quota to obtain the transmission channel.
Please refer to fig. 4, which is a schematic diagram illustrating a transmission channel splitting according to an embodiment of the disclosure. As shown in fig. 4, taking a cluster scheduling system in the rail transit field as an example, in a specific implementation, for a total bandwidth 50Gbps corresponding to a transmission network node, transmission channels corresponding to different systems or different services, that is, a FlexE a, a FlexE B, and a FlexE C, may be respectively divided therein by using a time slot-based FlexE technique, where the FlexE a may be Service data for which transmission delay is insensitive, for example, data sent by Service1, Service2, and Service 3; the FlexE B and the FlexE C may be used to transmit delay-sensitive service data, for example, the FlexE B may be used to transmit video data, and the FlexE C may be used to transmit broadcast station live data, so as to perform accurate bandwidth control on different systems and different services.
In addition, in specific implementation, when the transmission network node sends the target data to the core network node through the transmission channel corresponding to the service class according to the service class corresponding to the target data, the transmission network node may be further configured to: determining the transmission channel according to the service class corresponding to the target data, and determining the transmission priority of the target data; and sending the target data to the core network node through the transmission channel according to the transmission priority.
That is, in the transmission channels divided by the flexible ethernet technology, the transmission priority may be also divided in advance according to the transmission channels used by different users or services, so as to perform bandwidth control more flexibly. For example, in a train cluster scheduling system in the field of rail transit, a scheduling station is responsible for coordinating the operation of all trains according to service characteristics, and therefore, the priority of the scheduling system can be generally higher than that of a cluster hand-held terminal used by a platform operator or a train driver.
After the above processing, the transmission network node interface transmits the target data to the core network node through the corresponding transmission channel according to the service class of the target data.
It should be noted that, although the above implements accurate bandwidth allocation for each service, the influence on the transmission of other services when a certain service data transmission fails is avoided, and the reliability and transmission efficiency of data transmission in the communication network can be improved to a certain extent; however, in practice, data transmitted in the communication network, that is, target data, may be further subdivided into target control plane data and target user plane data, where the control plane data may generally be routing information and may be control data used for performing permission check, charging check, and admission check on a data sender or a data receiver; the user plane data may be data to be actually transmitted by a user, and specifically may be service system data; when the train cluster scheduling system in the prior art transmits data, the control plane data and the user plane data in the data are often not transmitted in a distinguishing manner, which may cause the problems of high data transmission delay and slow system response.
Please refer to fig. 1b, which is a schematic diagram illustrating the processing of control plane data and user plane data in the conventional train trunking dispatching system. That is, when the system transmits data, only one tightly coupled central core network node is often provided, and therefore control plane data and user plane data are not processed in a targeted manner, which causes that when a data forwarding layer of a core network node needs to forward user plane data, the transmission network node generally needs to transmit the control plane data and the user plane data to a total core network node, and after the total core network node obtains corresponding routing forwarding information according to the control plane data and performs the corresponding check, the node forwards the user plane data to a data receiver, that is, the flow directions of the control plane data and the user plane data in the existing trunking scheduling system are generally unified as follows: cluster hand-held terminal- > access network node- > transmission network node- > core network node- > dispatching desk; however, in practice, the data volume of the control plane data is often much smaller than that of the user plane data, and therefore, the user plane data and the control plane data are simultaneously transmitted to the core network node, which often causes the problems of high system delay and low system response speed.
Please refer to fig. 5, which is a schematic diagram illustrating a configuration of a core network node according to an embodiment of the disclosure. In this embodiment, to further reduce the system delay and improve the system response speed, for a core Network node, a physical resource of a conventional physical device may be divided into a plurality of resource blocks by a Network Function Virtualization (NFV) technique, where each resource block is independent to each other, so as to implement full decoupling; meanwhile, Network arrangement is performed by combining a Software Defined Network (SDN) technology, that is, a tightly coupled Network architecture of a traditional Network device is split into three layers of application, forwarding and control, and complete decoupling of the three layers is realized, wherein the application layer can be responsible for deployment and installation of core Network application Software; the control plane is deployed as an independent control plane data processing child node, which can be used for control of authority verification, charging verification, admission verification and the like of control plane data; and deploying the forwarding plane as a separate user plane data processing sub-node, which can be used for data forwarding of the user plane data.
That is, in the present embodiment, the target data includes target control plane data and target user plane data; the core network node may include a control plane data processing sub-node and a user plane data processing sub-node; in a specific implementation, before the step of the transmission network node executing the service class corresponding to the target data and sending the target data to the core network node through the transmission channel corresponding to the service class, the transmission network node is further configured to: and under the condition that the data receiving party is initially accessed, sending the target control surface data to the control surface data processing sub-node.
That is, in the process of initially establishing a network connection channel for data transmission by a data sender and a data receiver, only target control plane data in the target data may be sent to a control plane data processing sub-node in a core network node to obtain forwarding routing information of the target user plane data, and checks such as permission check, charging check, and admission check may be performed on access of the data sender.
Correspondingly, when the transmission network node sends the target data to the core network node through the transmission channel corresponding to the service class according to the service class corresponding to the target data, the transmission network node may be configured to: and sending the target user plane data to the user plane data processing sub-node through the transmission channel.
After step S2200, step S2300 is executed, in which the core network node receives the target data and sends the target data to a data receiving party.
Please refer to fig. 6, which is a schematic diagram illustrating processing of control plane data and user plane data in a cluster scheduling system according to an embodiment of the present disclosure. In specific implementation, when the core network node receives the target data and sends the target data to a data receiver, the core network node is configured to: receiving the target control surface data through the control surface data processing sub-node, and performing access check on the target control surface data; receiving the target user plane data through the user plane data processing sub-node; and under the condition that the access verification is passed, the user plane data processing sub-node receives data forwarding routing information sent by the control plane data processing sub-node, and sends the target user plane data to the data receiving party according to the data forwarding routing information.
As shown in fig. 6, in this embodiment, after receiving target data sent by an access network node, a transmission network node may send only control plane data, that is, target control plane data, to a control plane data processing sub-node in a core network node instead of sending both user plane data and control plane data in the target data to one core network node when a data sender is initially accessed, so as to perform access check on this access of the data sender, that is, perform permission check, charging check, and admission check, so as to improve data check speed and reduce data transmission delay; and when the access verification passes, the control plane data processing sub-node may provide forwarding routing information of the target data, which is obtained according to the stored routing table after the access verification passes, to a user plane data processing sub-node in the core network node, so that the user plane data processing sub-node may forward the target user plane data to a data receiver according to the forwarding routing information.
It should be further noted that, in specific implementation, for a core network node in the prior art, only one central core network node is often provided, but not having an edge calculation function, in this embodiment, the core network node may include a plurality of user plane data processing sub-nodes, and the plurality of user plane data processing sub-nodes may be sub-nodes corresponding to different geographic locations, so as to provide an edge calculation function according to location information of a data sender.
That is, when the transmission network node sends the target user plane data to the user plane data processing child node through the transmission channel, the transmission network node is configured to: acquiring the position information of the data sender; according to the position information, determining a target user plane data processing sub-node which is within a preset distance from the position of the data sender from the plurality of user plane data processing sub-nodes; and sending the target user plane data to the target user plane data processing sub-node through the transmission channel.
Taking a train cluster scheduling system in the field of rail transit as an example, in specific implementation, the data forwarding function of a core network node can be sunk to a side close to a cluster service, so that the traditional network structure is simplified, the transmission delay of service data is reduced, and the cluster scheduling is more flexible; on this basis, can also combine car networking technology, for example, car-to-car communication technology, further promote train operation efficiency.
As can be seen from the above, when data transmission is performed in the method provided in the embodiment of the present disclosure, first, an access network node, for example, a base station, receives target data to be transmitted, which is sent by a data sender, and sends the data to a transmission network node; then, the transmission network node receives the target data and transmits the target data to the core network node through a transmission channel corresponding to the service class according to the service class corresponding to the target data; and the core network node forwards the target data to a data receiver. In the data transmission process, different service data are decoupled by identifying the service types of different data, and different data transmission channels are allocated to different service types, so that the influence on the transmission of other services when a certain service data transmission fault occurs is avoided, and the data transmission efficiency can be improved; in addition, in this embodiment, the functions of the core network are separated based on the network orchestration technology, so that hard isolation between different services can be realized, and the security and reliability of data transmission are improved; meanwhile, an edge calculation function can be provided, so that data transmission delay can be further reduced, and data transmission efficiency is improved.
< System embodiment >
Corresponding to the above method embodiments, in this embodiment, a communication system is further provided, and as shown in fig. 7, the communication system 7000 may include an access network node 7100, a transmission network node 7200, and a core network node 7300.
The access network node comprises a first memory 7101 and a first processor 7102, the first memory 7101 for storing executable first instructions; the first processor 7102 is configured to execute the steps performed by the access network node in any embodiment of the present disclosure by operating the access network node 7100 according to the control of the first instruction.
The transmission network node 7200 comprises a second memory 7201 and a second processor 7202, the second memory 7201 for storing executable second instructions; the second processor 7202, configured to execute the transmission network node 7200 according to the control of the second instruction, to perform the steps implemented by the transmission network node in any of the embodiments of the present disclosure.
The core network node 7300 includes a third memory 7301 and a third processor 7302, the third memory 7301 being configured to store third executable instructions; the third processor 7302 is configured to execute, according to the control of the third instruction, the core network node 7300 to perform the steps implemented by the core network node in any embodiment of the disclosure.
The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A data transmission method, characterized in that the method is applied to a communication network comprising an access network node, a transport network node and a core network node, the method comprising:
the access network node receives target data to be transmitted, which is sent by a data sender, and sends the target data to the transmission network node;
the transmission network node sends the target data to the core network node through a transmission channel corresponding to the service type according to the service type corresponding to the target data;
and the core network node receives the target data and sends the target data to a data receiver.
2. The method according to claim 1, characterized in that said transmission channel is obtained by:
acquiring a total bandwidth corresponding to the transmission network node;
obtaining a target bandwidth quota corresponding to a service class according to a preset corresponding relation between the service class and the bandwidth quota;
and splitting the total bandwidth by a flexible Ethernet technology according to the target bandwidth quota to obtain the transmission channel.
3. The method of claim 1, wherein the access network node, when sending the target data to the transport network node, is configured to:
generating a target resource block for bearing the target data, wherein a preset number of blank resource blocks are arranged between the target resource block and other resource blocks, the other resource blocks are resource blocks bearing other data, and the other data comprise data to be transmitted which are received by the access network node at a time other than the current time;
and sending the target resource block to the transmission network node.
4. The method of claim 3, wherein the target data comprises target control plane data and target user plane data; the core network node comprises a control plane data processing sub-node and a user plane data processing sub-node;
before the step of the transmission network node executing the service class corresponding to the target data and sending the target data to the core network node through the transmission channel corresponding to the service class, the transmission network node is further configured to:
and under the condition that the data receiving party is initially accessed, sending the target control plane data to the control plane data processing sub-node.
5. The method according to claim 4, wherein the transmission network node, when sending the target data to the core network node through the transmission channel corresponding to the traffic class according to the traffic class corresponding to the target data, is configured to:
and sending the target user plane data to the user plane data processing sub-node through the transmission channel.
6. The method of claim 5, wherein the core network node, when receiving the target data and sending the target data to a data receiver, is configured to:
receiving the target control plane data through the control plane data processing sub-node, and performing access check on the target control plane data;
receiving the target user plane data through the user plane data processing sub-node;
and under the condition that the access verification is passed, the user plane data processing sub-node receives data forwarding routing information sent by the control plane data processing sub-node, and sends the target user plane data to the data receiving party according to the data forwarding routing information.
7. The method of claim 5, wherein the core network node comprises a plurality of user plane data processing sub-nodes;
when the transmission network node sends the target user plane data to the user plane data processing sub-node through the transmission channel, the transmission network node is configured to:
acquiring the position information of the data sender;
according to the position information, determining a target user plane data processing sub-node which is within a preset distance from the position of the data sender from the plurality of user plane data processing sub-nodes;
and sending the target user plane data to the target user plane data processing sub-node through the transmission channel.
8. The method according to claim 3, wherein the transmission network node, when sending the target data to the core network node through the transmission channel corresponding to the traffic class according to the traffic class corresponding to the target data, is configured to:
determining the transmission channel according to the service class corresponding to the target data, and determining the transmission priority of the target data;
and sending the target data to the core network node through the transmission channel according to the transmission priority.
9. The method according to claim 1, wherein the method is applied to a train cluster scheduling system, and the data sender and the data receiver comprise a mobile terminal device and a train scheduling server.
10. A communication system comprising an access network node, a transport network node and a core network node;
the access network node comprises:
a first memory for storing first executable instructions;
a first processor for operating the access network node to perform the steps of the method according to any one of claims 1-9, as implemented by the access network node, according to the control of the first instruction;
the transmission network node comprises:
a second memory for storing second executable instructions;
a second processor for operating the transport network node to perform the steps of the method as claimed in any one of claims 1 to 9, as controlled by the second instructions;
the core network node comprises:
a third memory for storing third executable instructions;
a third processor for operating the transport network node to perform the steps of the method according to any of claims 1-9 as implemented by a core network node under the control of the third instructions.
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