CN110875886B - Data transmission method, device and system for transmission network - Google Patents

Data transmission method, device and system for transmission network Download PDF

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Publication number
CN110875886B
CN110875886B CN201811011993.7A CN201811011993A CN110875886B CN 110875886 B CN110875886 B CN 110875886B CN 201811011993 A CN201811011993 A CN 201811011993A CN 110875886 B CN110875886 B CN 110875886B
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data
data transmission
node
network
channel
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CN110875886A (en
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钱凯
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Alibaba Group Holding Ltd
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Alibaba Group Holding Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/74—Address processing for routing

Abstract

The application discloses a data transmission method for a transmission network, and additionally provides a data transmission device and a system for the transmission network. Wherein the method comprises the following steps: the method comprises the steps of receiving a first data transmission request containing data requested to be transmitted, a destination address of the data and a data transmission requirement through a first node, determining routing information according to channel information of a network channel and the first data transmission request, determining a next node where the data arrives and a used network channel according to the routing information, generating a second data transmission request according to the first data transmission request and the routing information, and sending the second data transmission request by using the determined next node and the network channel. The method can select at least one network channel from the mixed data network channels to carry out data transmission under the condition of meeting the data transmission requirement and meeting the transmission cost requirement, thereby improving the stability of data transmission and reducing the data transmission cost.

Description

Data transmission method, device and system for transmission network
Technical Field
The present application relates to the field of data transmission, and in particular, to a data transmission method for a transmission network.
Background
Data transmission refers to a communication process of transmitting data from one place to another place, and a data transmission system generally comprises a network channel for transmitting data and data terminal equipment at two ends of the network channel. The network channel for transmitting data can be a special network channel or a traditional public network, and in the existing data transmission process, when the data transmission distance is far, the direct selection is often influenced by network delay and stability through the traditional public network transmission, so that the data transmission efficiency is low and the stability is poor.
The inventor of the present application finds in a research process that, in order to solve the above problems, a technical scheme generally adopted in the prior art is to establish a network topology structure with a dedicated line as a core, select a plurality of nodes in a global scope, connect the nodes together through the dedicated line, and transmit data to surrounding secondary nodes in a star-shaped manner with the nodes as a center, thereby solving to some extent the problem that data transmission is affected by network conditions and the transmission efficiency is low, but the prior art scheme has very high cost and poor elasticity, and thus cannot solve the problem of data transmission stability, and the dedicated line is used to send data transmission at a high cost.
Disclosure of Invention
The application provides a data transmission method for a transmission network to solve the problems of high cost and poor stability of the existing data transmission. The application further provides a data transmission device and system for the transmission network.
The application provides a data transmission method for a transmission network, wherein the transmission network comprises a plurality of nodes and network channels used for transmitting data among the nodes, and the method comprises the following steps:
a first node receives a first data transmission request, wherein the first data transmission request comprises data requested to be transmitted, a destination address of the data and a data transmission requirement;
when the first data transmission request does not carry routing information and the first node is not a node corresponding to the destination address, the first node determines the routing information according to channel information of the network channel, the destination address of the data and the data transmission requirement, wherein the routing information at least indicates a next node where the data arrives and the network channel used by the first node for transmitting the data to the next node;
the first node generates a second data transmission request according to the first data transmission request and the routing information;
and the first node sends the second data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information.
Optionally, the step of determining a network channel used by the first node to transmit the data to the next node includes:
and selecting a network channel meeting the data transmission requirement from network channels between the first node and the next node according to channel information of the network channels, wherein the channel information comprises available network bandwidth and transmission delay.
Optionally, the channel information further includes a priority of the network channel; the step of determining the network channel used by the first node to transmit the data to the next node comprises:
at least one network channel with higher priority is selected from the network channels meeting the data transmission requirement.
Optionally, the priorities include a first type of priority classified according to transmission cost and/or a second type of priority classified according to transmission effect.
Optionally, the step of sending the second data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information includes:
splitting data into a plurality of data blocks;
different data blocks are transmitted using different network channels and/or different data blocks are transmitted concurrently using the same network channel.
Optionally, the data transmission requirement includes a data transmission requirement of a data block, and the step of using different network channels to transmit different data blocks and/or using the same network channel to concurrently transmit different data blocks includes: the data block is transmitted using a network channel that satisfies the data transmission requirements of the data block.
Optionally, when the first data transmission request does not carry the routing information and the first node is a node corresponding to the destination address, the first node sends the first data transmission request to the destination address.
Optionally, before the first node sends the first data transmission request to the destination address, merging the split data blocks to obtain data.
Optionally, when the first data transmission request carries the routing information, the first node sends the first data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information.
Optionally, the data transmission requirement includes at least one of the following:
time requirements for transmitting data;
packet loss rate requirements of transmission data;
the type of network channel used to transmit the data requires it.
Optionally, the network channel includes at least one of the following types of network channels: the protocol optimization network channel, the public network channel, the intranet channel and the private line channel.
Accordingly, the present application also provides a data transmission apparatus for a transmission network, the transmission network including a plurality of nodes and network channels for transmitting data between the nodes, the apparatus comprising:
a receiving unit, configured to receive a first data transmission request at a first node, where the first data transmission request includes data requested to be transmitted, a destination address of the data, and a data transmission requirement;
a determining unit, configured to determine, at the first node, routing information according to channel information of the network channel, a destination address of the data, and the data transmission requirement, where the routing information at least indicates a next node where the data arrives and a network channel used by the first node to transmit the data to the next node, where the routing information is not carried in the first data transmission request, and the first node is not a node corresponding to the destination address;
a generating unit, configured to generate, at a first node, a second data transmission request according to the first data transmission request and the routing information;
a sending unit, configured to send, at the first node, the second data transmission request to the next node indicated by the routing information using the corresponding network channel indicated by the routing information.
Optionally, the determining unit is further configured to select, from network channels between the first node and the next node, a network channel that meets the data transmission requirement according to channel information of the network channel, where the channel information includes an available network bandwidth and a transmission delay.
Optionally, the channel information further includes a priority of the network channel; the determining unit is further configured to select at least one network channel with a higher priority from the network channels satisfying the data transmission requirement.
Optionally, the priorities include a first type of priority classified according to transmission cost and/or a second type of priority classified according to transmission effect.
Optionally, the sending unit is further configured to
Splitting data into a plurality of data blocks;
different data blocks are transmitted using different network channels and/or different data blocks are transmitted concurrently using the same network channel.
Optionally, the data transmission requirement includes a data transmission requirement of a data block, and the sending unit is further configured to transmit the data block using a network channel that meets the data transmission requirement of the data block.
Optionally, when the first data transmission request does not carry the routing information and the first node is a node corresponding to the destination address, the sending unit is further configured to send the first data transmission request to the destination address at the first node.
Optionally, before the first node sends the first data transmission request to the destination address, the sending unit is further configured to merge the split data blocks to obtain data.
Optionally, when the first data transmission request carries the routing information, the sending unit is further configured to send the first data transmission request to the next node indicated by the routing information at the first node by using the corresponding network channel indicated by the routing information.
Optionally, the data transmission requirement includes at least one of the following:
time requirements for transmitting data;
packet loss rate requirements of transmission data;
the type of network channel used to transmit the data requires.
Optionally, the network channel includes at least one of the following types of network channels: the protocol optimization network channel, the public network channel, the intranet channel and the private line channel.
Correspondingly, the present application also provides a transmission network comprising: a node and a network channel for transmitting data between nodes, wherein the node comprises the data transmission device for transmitting network according to any technical scheme.
Correspondingly, the present application also provides an electronic device, comprising:
a processor; and
a memory for storing a program of the data transmission method for the transmission network according to any one of the above, the device being powered on and executing the program of the data transmission method for the transmission network according to any one of the above by the processor, and then executing the data transmission method for the transmission network according to any one of the above.
Accordingly, the present application also provides a storage device storing a program of the data transmission method for the transmission network according to any one of the above, the program being executed by a processor to execute the data transmission method for the transmission network according to any one of the above.
Compared with the prior art, the method has the following advantages:
the application provides a data transmission method for a transmission network, in particular to a data transmission method for a transmission network using a plurality of data transmission channels in a mixed manner, wherein the transmission network comprises a plurality of nodes and network channels used for transmitting data among the nodes, and the data transmission method for the transmission network comprises the following steps: a first node receives a first data transmission request, wherein the first data transmission request comprises data requested to be transmitted, a destination address of the data and a data transmission requirement; when the first data transmission request does not carry routing information and the first node is not a node corresponding to a destination address, the first node determines the routing information according to the channel information of the network channel, the destination address of the data and the data transmission requirement, wherein the routing information at least indicates the next node where the data arrives and the network channel used by the first node for transmitting the data to the next node; and generating a second data transmission request according to the first data transmission request and the routing information, and sending the second data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information. The data transmission method for the transmission network can select at least one network channel from the mixed data network channels to transmit data under the condition of meeting the data transmission requirement and meeting the transmission cost requirement, thereby improving the stability of data transmission and reducing the data transmission cost.
Drawings
Fig. 1 is a flow chart of an embodiment of a data transmission method for a transmission network according to the present application;
FIG. 2 is a schematic diagram of an embodiment of a data transmission device for a transmission network according to the present application;
fig. 3 is a schematic diagram of an embodiment of a data transmission method for a transmission network according to the present application;
fig. 4 is a flowchart illustrating an implementation of an embodiment of a data transmission method for a transmission network according to the present application;
fig. 5 is a schematic diagram of an embodiment of an electronic device for data transmission of a transmission network according to the present application.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. In addition, this application is capable of implementation in many other ways than those specifically set forth herein and will suggest themselves to those skilled in the art without departing from the spirit and scope of this application. Therefore, the present application is not limited to the particular embodiments disclosed below.
In order to make those skilled in the art better understand the solution of the present application, the following describes an embodiment of a data transmission method for a transmission network in detail based on the present application. In addition, in the following description, each step of the method will be described in detail. Please refer to fig. 1, which is a flowchart illustrating an embodiment of a data transmission method for a transmission network according to the present application.
In this embodiment, data transmission refers to a communication process of data transmitted from one place (i.e. a source end, the source end has a source address, and may be generally implemented as a client) to another place (i.e. a destination end, the destination end has a destination address, and may be generally implemented as a server), and the data transmission is generally completed by using a transmission network. A transport network is generally composed of network channels for transporting data and nodes at both ends of the network channels (the nodes may be generally implemented as data terminal devices). The nodes may use network channels to transmit data. The node may be a data source, a data sink, or both. The network channels for transmitting data may include at least one type of network channel, wherein each type of network channel may include a plurality of channels. In one embodiment, the type of network channel may include at least one of: the protocol optimization network channel, the public network channel, the private line channel and the intranet channel. The public network is mainly referred to as a data switching network, a telephone switching network or other types of switching networks.
It will be appreciated that data may be transmitted from a source to a destination in turn via at least one node comprised in the transport network, and that the at least one node via which the data is passed in turn may constitute a complete transmission path for the data in the transport network. That is, the complete transmission path includes all nodes and node sequences through which data is transmitted from the source peer to the destination peer. The first node in the complete transmission path is a node corresponding to the source address, the node corresponding to the source address can directly receive the data to be transmitted from the source end, and then the data can be transmitted in the transmission network according to the complete transmission path until the last node in the complete transmission path is reached. The last node in the complete transmission path is a node corresponding to the destination address, and the node corresponding to the destination address can directly send the data to the destination end, so that the data transmission is completed. The source address corresponding node and the destination address corresponding node may be the same node.
The transmission network has a corresponding network topology structure, and in an embodiment provided by the present invention, the transmission network may be divided into a plurality of large areas, for example, the transmission network may include large areas such as a chinese large area and a U.S. large area. Each major region can be divided into a plurality of regions, for example, the chinese major region can include regions such as the hangzhou region, the beijing region, the shanghai region, and the shenzhen region. The division of the large area and the region may be made according to geographical locations.
Each zone is arranged with at least one node, which may be referred to as a zone node. Network channels for transmitting data are arranged among different area nodes contained in a large area, and the network channels can be called as same-area hybrid network channels. For example, a same-region hybrid network channel is arranged between region nodes of the Hangzhou region and the Beijing region. The regional node may transmit data to another regional node using a co-regional hybrid network channel.
In addition, the main district may also use one or more area nodes included in the main district as the main node of the main district, for example, the main district of china may use an area node of the shanghai area (or two area nodes of the shanghai area and beijing area) as the main node of the main district of china, and the main district of united states may use an area node of the eastern united states area as the main node of the main district of united states.
Network channels for transmitting data are arranged among the main nodes in different large areas, and the network channels can be called as cross-area hybrid network channels. For example, a cross-regional hybrid network channel is arranged between the main node of the Chinese district and the main node of the American district. The master node of a large area can use a cross-area hybrid network channel to transmit data to another master node of the large area.
The mixed network channel of the same district comprises at least one network channel of a protocol optimization network channel, a public network channel and an intranet channel, the mixed network channel of the cross district comprises at least one network channel of a protocol optimization network channel, a public network channel and a private line channel, and each type of network channel can be composed of a plurality of network channels of the type.
In this embodiment, the client, that is, the source end first sends data to a source address corresponding node, where the source address corresponding node is an area node of an area where the source address is located in a large area where the source address is located (hereinafter, referred to as a source end large area) (it is assumed that the large area where the source end is located is an a large area, and an area node of the area where the source address is located is an area node a of the a large area). Finally, the destination address corresponding node sends the data to the destination address, and the destination address corresponding node is a region node of a region where the destination address is located in a large region where the destination end is located (hereinafter, referred to as a destination end large region) (assuming that the large region where the destination end is located is a B large region, and the region node of the region where the destination address is located is a region node B of the B large region). Wherein, the complete transmission path of the data in the transmission network is a path from the source end large area node a to the destination end large area node b.
Specifically, in this embodiment, according to the source address of the source end and the destination address of the destination end, the data transmission process of the data in the transmission network can be divided into two cases, one case is data transmission across large areas (i.e. the source address and the destination address are located in different large areas), and the other case is data transmission in the same large area (i.e. the source address and the destination address are located in the same large area).
Under the condition of cross-district data transmission (namely, a big district and a big district B are different districts), a complete transmission path of data in a transmission network specifically comprises a co-district path of a source big district (a path from a big district regional node a to a big district main node, if the regional node a is the A big district main node, the co-district path does not exist), a cross-district path (a path from the A big district main node to the B big district main node, nodes included in the path are all big district main nodes), and a co-district path of a destination big district (a path from the B big district main node to a B big district regional node B, if the B big district main node is the regional node B, the co-district path does not exist).
In the case of data transmission in the same domain (i.e. a domain and B domain are the same domain), the complete transmission path of data in the transmission network includes the same domain path of the source domain: a path from regional node a of the a-campus to regional node B of the B-campus. Of course, the area node a may be the same node as the area node b.
The nodes in the complete transmission path may plan at least part of the complete transmission path according to a preset planning rule. Specifically, in the embodiment provided in the present application, a first planning rule is preset: the regional nodes of the non-main nodes can only plan the same-region path of the large region in which the regional nodes are located. The main node can plan not only the same-region path of the large region where the main node is located, but also a cross-region path. Therefore, under the first planning rule, the area node a of the area A plans the same-area path of the source-end large area, the main node of the area A plans the cross-large-area path, and the main node of the area B plans the same-area path of the target-end large area.
In a preferred embodiment provided by the present application, the second planning rule is preset: both the regional nodes and the main nodes of the non-main nodes can plan the same-region path of the large region in which the regional nodes and the main nodes are positioned, and can also plan the path across the large region. Therefore, under the second planning rule, the regional node a directly plans a complete transmission path including the same-region path and the cross-region path.
It should be noted that, when planning a path, a node also plans a network channel used by each node in the path. Therefore, if the planning rule is the first preset rule, the area node needs to store the network channel information of all the nodes in the same large area, and the main node in the large area stores the network channel information between the main nodes in all the large areas besides the network channel information in the same large area. If the planning rule is the second planning rule, each node (including the area node and the master node) needs to store not only the network channel information of the same large area, but also the network channel information of all the master nodes in the large area.
Please refer to fig. 3, which is a schematic diagram illustrating an embodiment of a data transmission method for a transmission network according to the present invention, wherein a local area network topology with regional nodes in the large area such as beijing, hangzhou, suzhou, shanghai, etc. is established in china. For another example, a regional node in the continental united states has a same-region network topology with the eastern region of the united states and the western region of the united states as major regions. It should be noted that the local area network topology is a network topology structure that establishes a data transmission network channel in the same large area, and the network channel connecting each area node in the local area network topology is a local area hybrid network channel, and the local area hybrid network channel mainly includes: the intranet channel, the protocol optimization network channel, the intranet channel and the like, wherein the intranet channel can determine whether to be established according to the specific data transmission condition. In addition, a cross-regional network topology can be established among a plurality of regions, and the east region of the united states of the shanghai and the inland of the united states of china are respectively selected as main nodes of the regions, and cross-regional hybrid network channels are established among the main nodes, and the cross-regional hybrid network channels mainly comprise: the system comprises a private line channel, a protocol optimization network channel, a public network channel and the like, wherein the private line channel can also be established or not according to the specific situation of data transmission, the protocol optimization network channel specifically comprises at least one network channel for selecting a transmission protocol of an application layer according to the specific situation to carry out data transmission optimization, and the public network channel can be selected as the data transmission channel when the network channels can not complete data transmission. It should be noted that the hybrid network path includes multiple types of network paths between nodes, and there may be multiple types of network paths for each type of network path.
In this embodiment, an embodiment of a data transmission method for a transmission network includes the following steps:
step S101: a first node receives a first data transfer request comprising data requested to be transferred, a destination address of the data, and a data transfer requirement.
The first node is a node of the transmission network, and may specifically be a regional node that is not a master node in a certain large area in the transmission network or a master node in a certain large area. The first data transfer request may be a data transfer request from the source peer or other node, typically an HTTP or HTTPs request.
The carried destination address indicates a destination end of data transmission, and the destination address may be located in the same area or different areas of the same large area in the transmission network with the first node, or may be located in different large areas in the transmission network.
The carried data transmission requirement is a requirement that needs to be met in a data transmission process, and may generally include at least one of a time requirement that needs to be met by data transmission (for example, the time requirement may be a predetermined time length, and the time length used for data transmission needs not to be greater than the predetermined time length), a packet loss rate requirement that needs to be met by data transmission (for example, the packet loss rate requirement may be a predetermined packet loss rate, and the packet loss rate in data transmission needs not to be greater than the predetermined packet loss rate), and a type requirement of a network channel that needs to be met by data transmission (for example, the network channel requirement may be a specified network channel type, and the network channel used for data transmission needs to be the specified network channel type).
Step S102: and when the first data transmission request does not carry routing information and the first node is not a node corresponding to the destination address, the first node determines the routing information according to channel information of the network channel, the destination address of the data and the data transmission requirement, wherein the routing information at least indicates a next node where the data arrives and a network channel used by the first node for transmitting the data to the next node.
After receiving the first data transmission request, the first node may determine whether the first data transmission request includes routing information, where the routing information may generally include at least a part of a transmission path (e.g., a complete transmission path or a part of a complete transmission path) of data in the transmission network and a network channel used by a node included in the at least a part of the transmission path. Then, the first node may determine whether the first node is a node corresponding to the destination address. If the first data transmission request does not include any routing information, it is impossible to include routing information indicating at least a next node to which the data arrives and a network path used by the first node to transmit the data to the next node, and thus it can be determined that the first data transmission request is a request from the source end, the first node being a node corresponding to the source address.
At this time, if the first node is not a node corresponding to the destination address, the first node may determine the routing information according to a preset planning rule, channel information of a network channel, the destination address of the data, and the data transmission requirement. The routing information indicates at least a next node to which the data arrives and a network path used by the first node to transmit the data to the next node.
Specifically, if the planning rule is the second planning rule, the first node may directly determine, according to the channel information of the network channel, the destination address of the data, and the data transmission requirement, a complete transmission path from the first node to the node corresponding to the destination address and a network channel used by the node in the complete transmission path.
If the planning rule is the first planning rule, the first node may determine whether the destination address and the first node are located in different large areas or the same large area. If the destination address and the first node are located in different districts, the first node may determine a co-district path (i.e., a path from the first node to a district master node where the first node is located) and a corresponding network channel of the source-side district in the complete transmission path, in the case that the first node is not the master node. Under the condition that the first node is the main node, the first node determines a cross-district path (namely, a path from the first node to the main node of the district corresponding to the destination address) and a corresponding network channel in the complete transmission path. If the destination address is in the same area as the first node, the first node may determine a complete transmission path and a corresponding network channel from the first node to the node corresponding to the destination address.
If the first data transmission request includes the routing information, the first data transmission request may be considered as a request from another node, and it is continuously determined whether a transmission path included in the routing information indicates a next node to which data is to arrive.
If the transmission path included in the carried routing information does not indicate the next node, that is, the first node is the last node of the transmission path, the first data transmission request does not include routing information at least indicating the next node where the data arrives and a network channel used by the first node to transmit the data to the next node. At this time, if the first node is not the node corresponding to the destination address, the preset planning rule may not be the second planning rule (if the second planning rule is the second planning rule, the transmission path carried by the first data transmission request is necessarily a complete transmission path, and the last node is the node corresponding to the destination address). If the planning rule is the first preset rule, the source address and the destination address are necessarily located in different large areas (if the source address and the destination address are located in the same large area, the transmission path carried by the first data transmission request is necessarily a complete transmission path, and the last node of the first data transmission request is a node corresponding to the destination address), and the transmission path carried by the first data transmission request is also not a same-area path of a destination large area in the complete transmission path (if the transmission path carried by the first data transmission request is the same-area path of the destination large area, the last node of the first data transmission request is a node corresponding to the destination address), so the transmission path carried by the first data transmission request is the same-area path of the source large area or a path across the large area. Since the last node of the same zone path or the cross-zone path of the source end large zone is necessarily the master node under the condition of cross-zone data transmission, the first node is the master node at this time. The first node may determine routing information indicating at least a next node where the data arrives and a network channel used by the first node to transmit the data to the next node, that is, may determine a path across a large area (i.e., a path from the first node to a main node of a large area where a destination address is located) and a corresponding network channel in a complete transmission path, or a path in the same area of a large area at a destination end (i.e., a path from the first node to a node corresponding to the destination address) and a corresponding network channel.
After determining that the routing information carried by the first data transmission request does not indicate a next node and determining that the first node is not a node corresponding to the destination address, it may also be determined whether the first node and the destination address are located in the same large area. If yes, the first node is the main node of the large area where the destination address is located, and then the same-area path (namely the path from the first node to the node corresponding to the destination address) and the corresponding network channel of the large area of the destination end in the complete transmission path are determined. If not, the first node is the main node of the large area where the source address is located, and then a large area crossing path (namely, a path from the first node to the main node of the large area where the destination address is located) and a corresponding network channel in the complete transmission path are determined.
For example, the first node may be a master node of a destination large area, and the cross-large area transmission path carried by the first data transmission request has no next node, but the master node of the destination large area needs to plan a path to an area node of an area corresponding to the destination address. If the first data transmission request does not at least indicate the next node where the data arrives and the routing information of the network channel used by the first node to transmit the data to the next node, but if the first node is the node corresponding to the destination address, the first node can directly send the first data transmission request to the destination address. The first node does not need to determine the routing information at this point.
For example, the first data transfer request may be a request from a client without routing information. However, the first node is also exactly a regional node of the region in which the destination address is located, and the first node may directly send the first data transmission request to the destination address. For example, if the first node is a master node of a large area of the destination and is also an area node of an area where the destination address is located, the first node may directly send the first data transmission request to the destination address without planning a peer-to-peer path of the next large area of the destination.
In addition, if the first data transmission request carries routing information at least indicating a next node where the data arrives and a network channel used by the first node to transmit the data to the next node, the first node may send the first data transmission request to the next node indicated by the routing information by using a corresponding network channel indicated by the routing information. For example, the first node may be a master node of a large area located between the source-end large-area master node and the destination-end large-area master node in the cross-large-area path, and at this time, the first node may directly forward the first data transmission request to the next master node according to the cross-large-area path carried by the first data transmission request.
Specifically, the step of determining a network channel used by the node (e.g., a network channel used by the first node to transmit data to the next node) may include: in the network channels between the node and the next node, selecting the network channel meeting the data transmission requirement according to the channel information of the network channel, wherein the channel information comprises at least one of available network bandwidth and transmission delay.
In addition, the channel information may further include priorities of the network channels, and after the network channels meeting the data transmission requirement are selected, at least one network channel with a higher priority may be selected from the network channels meeting the data transmission requirement. Wherein the priority comprises a first type of priority classified according to transmission cost or a second type of priority classified according to transmission effect. In this embodiment, the first class of priorities classified according to the transmission cost may specifically be a priority order established according to a principle of reducing the transmission cost as much as possible: the specific network channel is selected from the group consisting of a protocol optimization network channel, a public network channel, an internal network channel and a private line channel.
If the priority comprises a first type priority and a second type priority, the channel information further comprises a judgment order of the first type priority and the second type priority. The selection according to the second type of priority may also be continued, for example after the selection according to the first type of priority. When the same type of network channel is selected, the transmission effect is preferably selected. For example, a protocol optimized network channel is selected according to the first type of priority. And if a plurality of protocols optimize the network channel, selecting the second type with high priority from the network channel.
It should be further noted that the priority of the same-zone hybrid network channel may be different from the priority of the cross-zone hybrid network channel. For example, the first type of priority of the intra-network channel in the co-regional hybrid network channel is the highest, and the first type of priority of the protocol optimization network channel in the cross-regional hybrid network channel is the highest. Generally, different types of network channels have different first-type priorities, and the same type of network channel has different second-type priorities.
Step S103: and the first node generates a second data transmission request according to the first data transmission request and the routing information.
In this embodiment, the second data transmission request may include the data requested to be transmitted, a destination address of the data, a data transmission requirement, and the routing information determined by the first node in step S102. In one embodiment, a node a1 in a certain area of a source end large area (a large area) receives a first data transmission request sent by a client, where the first data transmission request includes request transmission data, a destination address of the data, and a transmission requirement of the data. If the destination address of the data is the area node a2 in the area A, the area node a1 determines routing information according to the destination address and the transmission requirement of the data, encapsulates the routing information for the first data transmission request to obtain a second data transmission request, the routing information comprises a path from the area node a1 in the area A to the area node a2 in the area A and a used network channel, sends the second data transmission request to the node a2 in the area corresponding to the destination address of the area A through the corresponding network channel, and then sends the second data transmission request to the destination address by the area node a 2.
If the destination address of the data is a node B in a certain area in a destination large area (a large area B different from the large area a), the area node a1 sends a first data transmission request to a master node of a source large area (a large area), the master node of the source large area (a large area) determines the next routing information according to the destination address and the transmission requirement of the data, encapsulates the routing information for the first data transmission request to obtain a second data transmission request, the routing information comprises a path from the master node of the a large area to the master node of the B large area and a used network channel, sends the second data transmission request to the master node of the B large area through the second network channel, the master node of the B large area continues to determine the next routing information according to the destination address and the transmission requirement, the routing information comprises a path from the master node B of the B large area to the area corresponding to the destination address and the used network channel, encapsulates the next routing information for the second data transmission request to obtain a third data transmission request, sends the third data transmission request to the area B through the corresponding network channel, and sends the area B to the area node B and then sends the area node B to the area node B.
Another preferred embodiment is that the node a1 in a certain area of the source-end large area (a large area) receives a first data transmission request sent by the client, where the first data transmission request includes request transmission data, a destination address of the data, and a transmission requirement of the data. If the destination address of the data is the area A, the area node a1 encapsulates routing information for the first data transmission request to obtain a second data transmission request, wherein the routing information comprises an area node a2 in the area A which the area node a1 in the area A needs to reach and a used network channel, the second data transmission request is sent to the node a2 in the area corresponding to the destination address of the area A through the network channel, and the area node a2 sends the second data transmission request to the destination address. If the destination address of the data is a node B in a certain area in a destination-side large area (B large area), the area node a1 directly determines complete routing information, the routing information comprises an A large-area main node needing to reach from the area node a1 in the A large area, a used first network channel, a B large-area main node needing to reach, a used second network channel, an area node B in the B large area needing to reach and a used third network channel, a second data transmission request is sent to the main node of the A large area through the first network channel, the main node of the A large area sends the second data transmission request to the B large area through the second network channel, the B large-area main node sends the second data transmission request to the node B in the area corresponding to the destination address through the third network channel, and the area node B sends the second data transmission request to the destination address again.
Step S104: and the first node sends the second data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information.
In the process of transmitting data by using a network channel, the present application further provides another preferred embodiment, where data is split into a plurality of data blocks, and different data blocks are transmitted by using different network channels included in the same-zone or cross-zone hybrid network channel or different data blocks are concurrently transmitted by using the same network channel. It should be noted that the different network channels and the same network channel are not referred to as a type, but as a bar. The plurality of network channels respectively transmit different blocks, and the plurality of network channels may be of the same type or of different types. In this embodiment, the data transmission requirement includes a data transmission requirement of a data block, and the step of using different network channels to transmit different data blocks or using the same network channel to concurrently transmit different data blocks includes: the data block is transmitted using a network channel that satisfies the data transmission requirements of the data block.
It should be noted that, if data is split into multiple data blocks during transmission, before the first node sends the first data transmission request to the destination address, the first node needs to merge the data blocks to obtain the data.
Specifically, in this embodiment, after the client sends the data to be transmitted to the area node where the client is located, the data transmission from the area node to the area node where the data receiving device is located may be implemented through the following steps, please refer to fig. 4, which is a specific implementation flowchart of an embodiment of the data transmission method for a transmission network according to the present application.
The method comprises the steps that a regional node of a region where a data sending client is located receives data which are sent by the data sending client and request for transmission, a routing protocol for packaging the data which are sent by the data sending client is analyzed, whether a data receiving device end and the data sending client are located in the same large region is judged according to the routing protocol, if yes, at least one network channel is selected from a protocol optimization channel, a public network channel and an intranet channel to be used as a same-region mixed network channel for data transmission under the condition that the regional node of the region where the data sending client is located meets the data transmission requirement, the data are transmitted to the regional node of the region where the data receiving device end is located through the same-region mixed network channel according to the principle of low cost, and then the data are transmitted to the data receiving device end through the node, so that the data transmission in the same large region is completed; and if not, transmitting the data requested to be transmitted to the main node of the local area from the area node of the area where the data sending client is located through the local area hybrid network channel, and selecting at least one network channel from the protocol optimization channel, the public network channel and the private line channel as a cross-area hybrid network channel for data transmission according to the principle of lowest cost under the condition that the main node of the local area meets the data transmission requirement. The protocol optimization channel has the minimum transmission cost, the public network channel has the transmission cost higher than that of the protocol optimization channel and lower than that of the intranet channel, the intranet channel has the transmission cost higher than that of the public network channel and lower than that of the special line channel, the special line channel has the maximum transmission cost, and when the same type of network channel is selected, the network channel with the better transmission effect is preferentially selected for data transmission. The large-area main node routes the data requested to be transmitted to the large-area main node where the data receiving equipment end is located according to the selected cross-area mixed network channel containing at least one network channel, and then the data is transmitted to the area node where the data receiving equipment end is located through the large-area main node and further transmitted to the data receiving equipment end.
The data transmission method for the transmission network comprises the following steps: a first node receives a first data transmission request, wherein the first data transmission request comprises data requested to be transmitted, a destination address of the data and a data transmission requirement; when the first data transmission request does not carry routing information and the first node is not a node corresponding to a destination address, the first node determines the routing information according to the channel information of the network channel, the destination address of the data and the data transmission requirement, wherein the routing information at least indicates the next node where the data arrives and the network channel used by the first node for transmitting the data to the next node; and generating a second data transmission request according to the first data transmission request and the routing information, and sending the second data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information. The data transmission method for the transmission network can select at least one network channel from the mixed data network channels to carry out data transmission under the conditions of meeting the data transmission requirement and meeting the transmission cost requirement, thereby improving the stability of data transmission and reducing the data transmission cost.
Corresponding to the above-mentioned data transmission method for a transmission network, the present application also provides a data transmission apparatus for a transmission network, which may be arranged in a node of the transmission network. Referring to fig. 2, which is a schematic diagram of an embodiment of a data transmission apparatus for a transmission network according to the present application, since the apparatus embodiment is substantially similar to the method embodiment, it is described relatively simply, and reference may be made to partial description of the method embodiment for relevant points. The application provides a data transmission device for a transmission network, which comprises the following parts:
a receiving unit 201, configured to receive a first data transmission request at a first node, where the first data transmission request includes data requested to be transmitted, a destination address of the data, and a data transmission requirement.
In this embodiment, the first node may be an area node and a large area master node. The first data transmission request is a data transmission request sent by the client or other nodes. In this embodiment, the entire data transmission network is divided into a plurality of large areas, an area suitable for serving as an intranet is divided into one large area according to the distance, and the data transmission process is divided into two cases, one is data transmission across the large area, and the other is data transmission in the same large area.
A determining unit 202, configured to, when the first data transmission request does not carry routing information and the first node is not a node corresponding to the destination address, determine, at the first node, the routing information according to channel information of the network channel, the destination address of the data, and the data transmission requirement, where the routing information at least indicates a next node where the data arrives and a network channel used by the first node to transmit the data to the next node.
In this embodiment, the first data transmission request includes two cases, one case is that the first data transmission request does not carry any routing information, and the other case is that the routing information carried in the first data transmission request does not indicate a next node.
The nodes comprise area nodes and a large area main node, wherein if the planning rule is a first planning rule, the area nodes store network channel information of all the nodes in the same large area, and the large area main node also stores the network channel information among the main nodes in all the large areas besides the network channel information in the same large area. In addition, the embodiment of the present application further provides a preferred embodiment, where the planning rule is a second planning rule, and each node (including the area node and the master node) not only stores the network channel information of the same large area, but also stores the network channel information of all the master nodes in the large area.
It should be noted that, when determining the network channel used by the first node to transmit the data to the next node, the determining unit may select, from the network channels between the first node and the next node, a network channel that meets the data transmission requirement according to channel information of the network channel, where the channel information includes at least one of an available network bandwidth and a transmission delay. In addition, the channel information further includes priorities of the network channels, and the determining unit selects at least one network channel with a higher priority from the network channels satisfying the data transmission requirement. Wherein the priority comprises a first type of priority divided according to transmission cost and/or a second type of priority divided according to transmission effect. In this embodiment, the priority class classified according to the transmission cost, specifically, the priority order established according to the principle of reducing the transmission cost as much as possible:
when a network channel of the same type is selected, the protocol optimization network channel, a public network channel, an internal network channel and a private line channel are preferentially selected to have good transmission effect. The data transmission requirement comprises at least one of a time requirement for transmitting data, a packet loss rate requirement for transmitting data and a type requirement of a network channel used for transmitting data. The network channel comprises at least one of the following types of network channels: the protocol optimization network channel, the public network channel, the intranet channel and the private line channel.
The data transmission requirement includes a data transmission requirement of the data block, and the sending unit may transmit the data block using a network channel that satisfies the data transmission requirement of the data block. The sending unit may further send the first data transmission request to the destination address at the first node, when the first data transmission request does not carry the routing information and the first node is a node corresponding to the destination address. For example, the first data transfer request may be a request from a client without routing information. But the first node is just also the area node of the area where the destination address is located. For another example, the first node is a master node of a large area of the destination terminal and is also an area node of an area where the destination address is located, so that the subsequent same-area path does not need to be planned. In a case that the first data transmission request carries the routing information, the sending unit may further send, at the first node, the first data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information. For example, the first node may be a master node of an intermediate large area in the path across the large area, and at this time, the first node may be directly forwarded to the next master node according to the routing information.
A generating unit 203, configured to generate a second data transmission request according to the first data transmission request and the routing information.
A sending unit 204, configured to send the second data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information.
In an implementation manner provided by this embodiment, in the case of trans-regional transmission, the planning rule is a first planning rule, and data is to be transmitted from the regional node a in the large area a to the regional node B in another large area B. If the first node is an area node a of an area where a source address in a source-end large area (a large area) is located, the routing information determined by the first node includes all nodes from the area node a in the a large area to a main node of the a large area and channels used by the nodes. If the first node is a source end large area A main node, the routing information determined by the first node comprises all main nodes from the main node of the area A to the main node of the area B and channels used by the main nodes. If the first node is a master node in the B big area, the routing information determined by the first node comprises all nodes from the master node in the B big area to a node B in the B big area and channels used by all the nodes. Under the condition of same-region transmission, if the first node is a node corresponding to the source address, the determined routing information comprises all nodes from the node corresponding to the source address to the node corresponding to the destination address and channels used by the nodes.
In a preferred implementation manner provided by this embodiment, the planning rule is a second planning rule, and when the same-domain transmission and the cross-domain transmission are performed, the determined routing information includes all nodes and channels used by the nodes between the first node and the area node in the area corresponding to the destination address, regardless of whether the first node is an area node or a main node in the large domain, as long as the first node is a node corresponding to the source address. The network channel is determined according to the destination address and the transmission requirement of the data, the network channel may include at least one type of network channel among a protocol optimization network channel, a public network channel, an intranet channel and a private line channel, and the second data transmission request is transmitted to the next node according to a different network channel included in the routing information under different conditions.
In the foregoing embodiments, embodiments of a data transmission method and apparatus for a transmission network are provided, and correspondingly, the present application further provides a transmission network. The present embodiment is similar to the foregoing embodiments, and details are not repeated herein, please refer to corresponding parts in the foregoing method embodiments. The node in the transmission network provided by the present application includes the data transmission apparatus for the transmission network according to any one of the above technical solutions.
Corresponding to the above-mentioned data transmission method for the transmission network, an embodiment of the present application further provides an electronic device, please refer to fig. 5, which is a schematic diagram illustrating an embodiment of an electronic device for data transmission of the transmission network according to the present application.
An electronic device provided by an embodiment of the application includes the following parts:
a processor 501; and
a memory 502 for storing a program of a data transmission method for a transmission network, the device being powered on and executing the program of the data transmission method for the transmission network by the processor, the data transmission method for the transmission network as described in the above method embodiments.
It should be noted that, for the detailed description of the electronic device provided in the embodiment of the present application, reference may be made to the related description of the data transmission method for the transmission network provided in the embodiment of the present application, and details are not repeated here.
Corresponding to the data transmission method for the transmission network, the embodiment of the application further provides a storage device. A storage device provided in an embodiment of the present application stores a program for a data transmission method for a transmission network, where the program is executed by a processor to execute the data transmission method for the transmission network according to the above method embodiment
It should be noted that, for the detailed description of the storage device provided in the embodiment of the present application, reference may be made to the related description of the data transmission method for the transmission network provided in the embodiment of the present application, and details are not repeated here.
Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application, and those skilled in the art can make variations and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application should be determined by the claims that follow.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include non-transitory computer readable media (transient media), such as modulated data signals and carrier waves.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

Claims (26)

1. A data transmission method for a transmission network comprising a plurality of nodes and network tunnels between the nodes for transmitting data, the method comprising:
a first node receives a first data transmission request, wherein the first data transmission request comprises data requested to be transmitted, a destination address of the data and a data transmission requirement;
when the first data transmission request does not carry routing information and the first node is not a node corresponding to the destination address, the first node determines the routing information according to channel information of the network channel, the destination address of the data and the data transmission requirement, wherein the routing information at least indicates a next node where the data arrives and the network channel used by the first node for transmitting the data to the next node;
the first node generates a second data transmission request according to the first data transmission request and the routing information;
and the first node sends the second data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information.
2. The data transmission method for a transmission network according to claim 1, wherein the step of determining a network channel used by the first node to transmit the data to the next node comprises:
and selecting a network channel meeting the data transmission requirement from network channels between the first node and the next node according to channel information of the network channels, wherein the channel information comprises at least one of available network bandwidth and transmission delay.
3. The data transmission method for a transmission network according to claim 2, wherein the channel information further includes a priority of a network channel, and the step of determining the network channel used by the first node to transmit the data to the next node includes:
at least one network channel with higher priority is selected from the network channels meeting the data transmission requirement.
4. A data transmission method for a transmission network according to claim 3, wherein the priorities comprise a first type of priority classified according to transmission cost and/or a second type of priority classified according to transmission effectiveness.
5. The data transmission method for the transmission network according to claim 1, wherein the step of the first node sending the second data transmission request to the next node indicated by the routing information using the corresponding network channel indicated by the routing information comprises:
splitting the data into a plurality of data blocks;
different data blocks are transmitted using different network channels and/or different data blocks are transmitted concurrently using the same network channel.
6. The data transmission method for the transmission network according to claim 5, wherein the data transmission requirement includes a data transmission requirement of a data block, and the step of the first node transmitting a different data block using a different network channel and/or concurrently transmitting a different data block using the same network channel includes:
the data block is transmitted using a network channel that satisfies the data transmission requirements of the data block.
7. Data transmission method for a transmission network according to claim 5, wherein the method comprises:
and under the condition that the first data transmission request does not carry the routing information and the first node is the node corresponding to the destination address, the first node sends the first data transmission request to the destination address.
8. Data transmission method for a transmission network according to claim 7, wherein the method comprises:
merging the split data blocks to obtain the data before the first node sends the first data transmission request to the destination address.
9. The data transmission method for a transport network according to claim 1, wherein the method further comprises:
and under the condition that the first data transmission request carries the routing information, the first node sends the first data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information.
10. The data transmission method for a transport network of claim 1, wherein the data transmission requirements include at least one of:
time requirements for transmitting data;
packet loss rate requirements of transmission data;
the type of network channel used to transmit the data requires.
11. The data transmission method for a transmission network according to claim 1, wherein the network tunnels comprise at least one of the following types of network tunnels: the protocol optimization network channel, the public network channel, the intranet channel and the private line channel.
12. A data transmission apparatus for a transmission network comprising a plurality of nodes and network channels between the nodes for transmitting data, the apparatus comprising:
a receiving unit, configured to receive a first data transmission request at a first node, where the first data transmission request includes data requested to be transmitted, a destination address of the data, and a data transmission requirement;
a determining unit, configured to determine, at the first node according to channel information of the network channel, a destination address of the data, and the data transmission requirement, routing information that at least indicates a next node where the data arrives and a network channel used by the first node to transmit the data to the next node, where the routing information is not carried in the first data transmission request and the first node is not a node corresponding to the destination address;
a generating unit, configured to generate a second data transmission request according to the first data transmission request and the routing information;
a sending unit, configured to send the second data transmission request to the next node indicated by the routing information by using the corresponding network channel indicated by the routing information.
13. The data transmission apparatus for a transport network according to claim 12, wherein the determining unit is configured to:
and selecting a network channel meeting the data transmission requirement from network channels between the first node and the next node according to channel information of the network channels, wherein the channel information comprises at least one of available network bandwidth and transmission delay.
14. The data transmission apparatus for a transmission network according to claim 13, wherein the channel information further includes priorities of the network channels, and the determination unit is further configured to select at least one network channel with a higher priority from the network channels satisfying the data transmission requirement.
15. Data transmission apparatus for a transmission network according to claim 14, wherein the priorities comprise a first class of priorities divided according to transmission cost and/or a second class of priorities divided according to transmission effectiveness.
16. The data transmission apparatus for a transport network of claim 12, wherein the sending unit is further configured to:
splitting data into a plurality of data blocks;
different data blocks are transmitted using different network channels and/or different data blocks are transmitted concurrently using the same network channel.
17. The data transmission apparatus for a transport network of claim 16, wherein the data transmission requirements include data transmission requirements of a data block, and the sending unit is further configured to transmit the data block using a network channel that satisfies the data transmission requirements of the data block.
18. The data transmission apparatus for a transport network according to claim 16, wherein in a case that the first data transmission request does not carry the routing information and the first node is a node corresponding to the destination address, the sending unit is further configured to send the first data transmission request to the destination address at the first node.
19. The data transmission apparatus for a transmission network according to claim 18, wherein the sending unit is further configured to merge the split data blocks to obtain data before the first node sends the first data transmission request to the destination address.
20. The data transmission apparatus for the transmission network according to claim 12, wherein, in a case that the first data transmission request carries the routing information, the sending unit is further configured to send, at the first node, the first data transmission request to the next node indicated by the routing information by using a corresponding network tunnel indicated by the routing information.
21. A data transmission arrangement for a transmission network according to claim 12, wherein the data transmission requirements include at least one of:
time requirements for transmitting data;
packet loss rate requirements of transmission data;
the type of network channel used to transmit the data requires.
22. A data transmission arrangement for a transmission network according to claim 12, wherein the network channels comprise at least one of the following types of network channels: the protocol optimization network channel, the public network channel, the intranet channel and the private line channel.
23. A transport network comprising:
a plurality of nodes comprising the data transmission arrangement for a transmission network of any of the preceding claims 12-22; and network channels for transmitting data between the nodes.
24. The transmission network according to claim 23, wherein the transmission network comprises a plurality of large areas, wherein each large area comprises at least one node, and one or more nodes of the nodes contained in the large area are used as the master nodes of the large area, and each node contained in the large area corresponds to each area of the large area.
25. An electronic device, comprising:
a processor; and
a memory for storing a program of the data transmission method for the transmission network according to any one of claims 1 to 11, the apparatus being powered on and executing the program of the data transmission method for the transmission network according to any one of claims 1 to 11 by the processor to execute the data transmission method for the transmission network according to any one of claims 1 to 11.
26. A storage device in which a program for a data transmission method for a transmission network according to any one of claims 1 to 11 is stored, the program being executed by a processor to execute the data transmission method for a transmission network according to any one of claims 1 to 11.
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