CN116709571A - Wireless elastic networking method and system for mobile carrier - Google Patents
Wireless elastic networking method and system for mobile carrier Download PDFInfo
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- CN116709571A CN116709571A CN202310583967.6A CN202310583967A CN116709571A CN 116709571 A CN116709571 A CN 116709571A CN 202310583967 A CN202310583967 A CN 202310583967A CN 116709571 A CN116709571 A CN 116709571A
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- 238000004891 communication Methods 0.000 claims abstract description 21
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- 238000012790 confirmation Methods 0.000 claims description 20
- 238000004364 calculation method Methods 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 10
- 239000000969 carrier Substances 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 5
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
Abstract
The invention discloses a wireless elastic networking method and system for a mobile carrier, and relates to the field of networks. Mapping the service data flow between access nodes (source node and destination node) into a virtual connection; after the access node is accessed to the network, firstly registering virtual connection with the relay node, the relay node constructs an end-to-end path for the relay node in advance according to different service requirements, and reserves communication network resources such as time slots, bandwidths, caches and the like on each relay node through which the path passes so as to ensure high-reliability transmission of sensitive data.
Description
Technical Field
The present invention relates to the field of networks, and in particular, to a wireless elastic networking method and system for mobile carriers.
Background
In industrial sites, as well as in cabins of aircrafts, ships, vehicles and the like, data buses such as ARINC 429, 1553B, ARINC 629, CAN, AFDX (ARINC 664part 7), FC-AE 1553, STANAG 3910, IEEE 139B and the like are generally used for realizing data interaction among information systems, electronic equipment, hardware boards and personnel.
With the progress of manufacturing technology, more and more devices and boards are deployed in industrial sites, and the internal composition of vehicles such as aircrafts, ships, vehicles and the like is also more and more complex, and the information interaction mode based on wired media (cable) presents serious defects, and is mainly represented by: (1) The cable layout is complex, and once burst faults such as protective layer fracture, wire breakage and the like occur, the maintenance difficulty is high in a narrow and compact enclosed space, and serious safety accidents are easy to cause. (2) The large number of couplers and connectors are introduced, so that the probability of safety faults is further increased, the labor cost of cable installation and cable maintenance is increased, the design complexity is increased, the system upgrading is difficult, and the deployment of new equipment is not facilitated. (3) The weight of the vehicle can be greatly increased, and studies have shown that the weight of the cable and connector can generally be 2% to 5% of the total weight of the vehicle, which can result in more fuel consumption.
Disclosure of Invention
In order to solve the above-mentioned problems, the embodiments of the present invention provide a wireless elastic networking technology based on virtual connection, which maps the service data flow between access nodes (source node and destination node) into a virtual connection; after the access node is accessed to the network, firstly registering virtual connection with the relay node, the relay node constructs an end-to-end path for the relay node in advance according to different service requirements, and reserves communication network resources such as time slots, bandwidths, caches and the like on each relay node through which the path passes so as to ensure high-reliability transmission of sensitive data.
Some embodiments of the present disclosure provide a wireless elastic networking method for a mobile carrier, including:
the source node and the destination node complete a wireless network access process, the source node is connected to a network through a first relay node, and the destination node is connected to the network through a second relay node;
the first relay node and the second relay node broadcast the association relation between the source node and the first relay node and the association relation between the destination node and the second relay node to the whole network respectively;
the source node sends virtual connection registration information to a first relay node associated with the source node through a wireless access link, wherein the virtual connection registration information comprises a source node identifier, a destination node identifier, a service identifier and a service quality requirement, the virtual connection registration is completed, and the registered virtual connection is identified by the virtual connection identifier;
the first relay node allocates local communication network resources for the virtual connection according to the service quality requirement, and performs route calculation according to the mastered global topology information to obtain a next hop relay node through calculation;
the next-hop relay node calculates the next-hop relay node according to the calculation method of the first relay node, and repeats the process until reaching the second relay node associated with the destination node;
a second relay node associated with the destination node allocates local communication network resources for the virtual connection and sends confirmation information to the upper-level relay node to indicate that the path is established;
after receiving the confirmation information, the upper-level relay node sends the confirmation information to the upper-level relay node until the confirmation information reaches the first relay node associated with the source node, and the virtual connection is established.
In some embodiments, the virtual connection identification is generated by the source node or the first relay node.
In some embodiments, the virtual connection identifier includes a connection domain, the source node identifier, the destination node identifier, and the service identifier are connected into a bit sequence, and the bit sequence is input into a hash function, and the output obtains the connection domain.
In some embodiments, the virtual connection identifier further comprises a service field, the service field comprising an indication field, or the service field comprising an indication field and a quality of service requirement field, the indication field being used to indicate whether the quality of service requirement field will occur.
Some embodiments of the present disclosure propose a wireless elastic networking system for mobile carriers, comprising:
one or more relay nodes, a source node and a destination node,
the access node and the relay node communicate through a wireless access link, the different relay nodes communicate through a relay link, the relay link adopts a wired or wireless communication mode,
the source node and the destination node are access nodes, are user nodes in the network, are a sender and a receiver of data, have different access requirements,
the relay node is configured to: coordinating network access and network exit requirements of different access nodes, and distributing access links with certain service quality guarantee for the access nodes; aggregating and forwarding data generated by the access node; forwarding data delivered by other relay nodes; when a node or link failure occurs, the transmission path is recalculated.
In some embodiments, a source node and a destination node are used for completing a wireless network access procedure, the source node is connected to a network through a first relay node, and the destination node is connected to the network through a second relay node;
the first relay node and the second relay node are used for broadcasting the association relation between the source node and the first relay node and the association relation between the destination node and the second relay node to the whole network respectively;
the source node is used for sending virtual connection registration information to the first relay node associated with the source node through the wireless access link, wherein the virtual connection registration information comprises a source node identifier, a destination node identifier, a service identifier and a service quality requirement, the virtual connection registration is completed, and the registered virtual connection is identified by the virtual connection identifier;
the first relay node is used for distributing local communication network resources for the virtual connection according to the service quality requirement, and performing route calculation according to the mastered global topology information to obtain a next-hop relay node through calculation;
the next-hop relay node is used for calculating a next-hop relay node according to the calculation method of the first relay node, and repeating the process until reaching a second relay node associated with the destination node;
the second relay node associated with the destination node is used for distributing local communication network resources for the virtual connection and sending confirmation information to the upper relay node to indicate that the path is established;
and the upper-level relay node is used for sending the confirmation information to the upper-level relay node after receiving the confirmation information until the confirmation information reaches the first relay node associated with the source node, and the virtual connection is established.
In some embodiments, the source node or the first relay node is configured to generate a virtual connection identification.
In some embodiments, the virtual connection identifier includes a connection domain, the source node identifier, the destination node identifier, and the service identifier are connected into a bit sequence, and the bit sequence is input into a hash function, and the output obtains the connection domain.
In some embodiments, the virtual connection identifier further comprises a service field, the service field comprising an indication field, or the service field comprising an indication field and a quality of service requirement field, the indication field being used to indicate whether the quality of service requirement field will occur.
Some embodiments of the present disclosure propose a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of a wireless resilient networking method for mobile carriers.
Drawings
Fig. 1 shows a schematic diagram of a wireless elastic networking system and a virtual connection establishment procedure.
Fig. 2 shows a schematic diagram of a virtual connection identification.
Detailed Description
System composition
A wireless elastic networking system based on virtual connections may be used for mobile carriers. Mobile carriers include, but are not limited to, aircraft, ships, vehicles, and the like.
As shown in fig. 1, the whole network mainly comprises two network elements, namely a relay node and an access node, and two links, namely a relay link and an access link. The relay node has one or more. Wherein (1) access nodes are user nodes in the network, which are senders and receivers of data, and different types of access nodes have different access requirements, including, for example, rate, delay, packet loss rate, etc. In fig. 1, both the source node and the destination node are access nodes. (2) relay nodes, mainly responsible for the operation of aspect 4: (1) coordinating network access and network exit requirements of different access nodes, and distributing access links with a certain service quality guarantee (such as bandwidth, time delay, packet loss rate and the like) for the access nodes; (2) aggregating and forwarding data generated by the access node; (3) and forwarding data delivered by other relay nodes. (4) When a node/link failure occurs, the transmission path is recalculated. In fig. 1, C, D, E are relay nodes. (3) The access link adopts a wireless communication mode and is responsible for transmitting service data between the access node and the relay node. (4) The relay link can adopt a wired communication mode or a wireless communication mode and is responsible for transmitting service data between relay nodes.
Construction of virtual connections
After the source node is connected to the network, a virtual connection needs to be constructed for the data stream to be sent. The specific process is as follows:
1) After the source node and the destination node are powered on, the standard wireless network access process is finished first. In practical application, networks of different technical systems have different network access protocol flows, and the method of the embodiment does not require modification of the network access flows. The source node is connected to the network through a first relay node, and the destination node is connected to the network through a second relay node. And the first relay node and the second relay node broadcast the association relation between the source node and the first relay node and the association relation between the destination node and the second relay node to the whole network respectively. Assuming that the source node is connected to the network through the relay node C and the destination node is connected to the network through the relay node E, the node C and the node E need to broadcast the association relationship between the source node and the relay node C and the association relationship between the destination node and the relay E to the whole network, respectively.
2) The source node sends virtual connection registration information to the first relay node associated with the source node through a wireless access link, wherein the virtual connection registration information comprises a source node identifier, a destination node identifier, a service identifier and a service quality requirement, the virtual connection registration is completed, and the registered virtual connection is identified by the virtual connection identifier. The virtual connection identity is generated by the source node or the first relay node. For example, the source node sends information such as virtual connection identifier, source node identifier, destination node identifier, service identifier, quality of service (QoS, quality ofService) requirement, etc. to its associated relay node (relay node C in fig. 1), and completes virtual connection registration.
3) And the first relay node associated with the source node allocates local communication network resources for the virtual connection according to the service quality requirement, and performs route calculation according to the mastered global topology information to obtain the next-hop relay node through calculation. For example, the relay node C associated with the source node allocates local communication network resources such as bandwidth, buffer, time slot, etc. for the virtual connection, and performs route calculation according to the global topology information grasped by the local communication network resources, so as to calculate and obtain the next-hop relay node D.
4) The relay node C sends a path request to the next hop relay node D.
And the next-hop relay node calculates the next-hop relay node according to the calculation method of the first relay node, and repeats the process until reaching the second relay node associated with the destination node.
5) And (3) repeatedly executing the step (3) by the next-hop relay node D), namely distributing local communication network resources for the virtual connection by the next-hop relay node D according to the service quality requirement, and executing route calculation according to the mastered global topology information to obtain the next-hop relay node by calculation until reaching a second relay node (such as a relay node E) associated with the destination node.
6) The relay node D sends a path request to the next hop relay node E.
7) A second relay node (e.g., relay node E) associated with the destination node allocates local communication network resources, such as bandwidth, buffers, time slots, etc., for the virtual connection based on the quality of service requirements,
8) And a second relay node (such as a relay node E) associated with the destination node allocates local communication network resources such as bandwidth, cache, time slot and the like for the virtual connection, and then sends confirmation information to a higher-level relay node (such as a relay node D) to indicate that the path establishment is completed.
9) After receiving the confirmation information, the upper-level relay node sends the confirmation information to the upper-level relay node until the confirmation information reaches the first relay node associated with the source node, and the virtual connection is established. For example, after receiving the acknowledgement information, the relay node D sends the acknowledgement information to the relay node C at the higher level until the acknowledgement information reaches the relay node C associated with the source node, and the virtual connection is established.
First embodiment
The source node identification and the destination node identification depend on the specific technical system adopted by the network. For example, if the network employs IPv4 technology, the source node identification and destination node identification may be IPv4 addresses of the nodes; if the network employs IPv6 technology, the source node identification and the destination node identification may be IPv6 addresses of the nodes.
Second embodiment
The virtual connection identifier may be generated by the source node or by a relay node associated with the source node, and fig. 2 shows an implementation method of the virtual connection identifier.
The virtual connection identifier comprises two components of a connection domain and a service domain. The connection domain is a mandatory option and the service domain is an optional option.
(1) Connection domain
The length of the connection field may be preset according to the network size, for example, an integer multiple of 8 bits. The method for generating the connection domain comprises the following steps:
firstly, a source node identifier, a destination node identifier and a service identifier are connected into a bit sequence, and the format of the service identifier can be determined according to a specific technical system adopted by a network. In a TCP/IP network, the traffic identification is, for example, a port number.
Then, the bit sequence generated in the previous step is input into a function g (), and the connection domain data is output by the function. The function g (), which is a hash function of the network selection, such as MD5, SHA-1, SHA256, SHA-512, etc., may also be constructed in a standard method ISO/IEC 10118-2 using the symmetric cryptosystem AES.
(2) Service domain
The service domain includes an indication field and a quality of service requirement field, the indication field is a mandatory option, the quality of service requirement field is an optional option, and the quality of service requirement field includes fields such as bandwidth, delay requirement, and the like.
The indication field is used to indicate whether a quality of service requirement field will appear. I.e. an indication field for indicating whether an optional field of bandwidth, latency requirements etc. will occur. The indication field may use bitmap technology, and each bit represents an optional field, when the value of the bit is 1, it represents that the optional field exists, and when the value of the bit is 0, it represents that the optional field does not exist.
Third embodiment
When the virtual connection is constructed, the relay node can execute classical routing algorithms such as Dijkstra and the like to obtain the next-hop relay node.
It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more non-transitory computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer program code embodied therein.
The foregoing description of the preferred embodiments of the present disclosure is not intended to limit the disclosure, but rather to enable any modification, equivalent replacement, improvement or the like, which fall within the spirit and principles of the present disclosure.
Claims (10)
1. A wireless elastic networking method for mobile carriers, comprising:
the source node and the destination node complete a wireless network access process, the source node is connected to a network through a first relay node, and the destination node is connected to the network through a second relay node;
the first relay node and the second relay node broadcast the association relation between the source node and the first relay node and the association relation between the destination node and the second relay node to the whole network respectively;
the source node sends virtual connection registration information to a first relay node associated with the source node through a wireless access link, wherein the virtual connection registration information comprises a source node identifier, a destination node identifier, a service identifier and a service quality requirement, the virtual connection registration is completed, and the registered virtual connection is identified by the virtual connection identifier;
the first relay node allocates local communication network resources for the virtual connection according to the service quality requirement, and performs route calculation according to the mastered global topology information to obtain a next hop relay node through calculation;
the next-hop relay node calculates the next-hop relay node according to the calculation method of the first relay node, and repeats the process until reaching the second relay node associated with the destination node;
a second relay node associated with the destination node allocates local communication network resources for the virtual connection and sends confirmation information to the upper-level relay node to indicate that the path is established;
after receiving the confirmation information, the upper-level relay node sends the confirmation information to the upper-level relay node until the confirmation information reaches the first relay node associated with the source node, and the virtual connection is established.
2. The method of claim 1, the virtual connection identification being generated by the source node or the first relay node.
3. The method of claim 1, wherein the virtual connection identifier comprises a connection domain,
connecting the source node identifier, the destination node identifier and the service identifier into a bit sequence, inputting the bit sequence into a hash function, and outputting to obtain a connection domain.
4. The method of claim 3, wherein the virtual connection identifier further comprises a service domain,
the service domain includes an indication field, or alternatively, the service domain includes an indication field and a quality of service requirement field,
the indication field is used to indicate whether a quality of service requirement field will appear.
5. A wireless elastic networking system for mobile carriers, comprising:
one or more relay nodes, a source node and a destination node,
the access node and the relay node communicate through a wireless access link, the different relay nodes communicate through a relay link, the relay link adopts a wired or wireless communication mode,
the source node and the destination node are access nodes, are user nodes in the network, are a sender and a receiver of data, have different access requirements,
the relay node is configured to: coordinating network access and network exit requirements of different access nodes, and distributing access links with certain service quality guarantee for the access nodes; aggregating and forwarding data generated by the access node; forwarding data delivered by other relay nodes; when a node or link failure occurs, the transmission path is recalculated.
6. The system of claim 5, wherein:
the source node and the destination node are used for completing a wireless network access process, the source node is connected to the network through the first relay node, and the destination node is connected to the network through the second relay node;
the first relay node and the second relay node are used for broadcasting the association relation between the source node and the first relay node and the association relation between the destination node and the second relay node to the whole network respectively;
the source node is used for sending virtual connection registration information to the first relay node associated with the source node through the wireless access link, wherein the virtual connection registration information comprises a source node identifier, a destination node identifier, a service identifier and a service quality requirement, the virtual connection registration is completed, and the registered virtual connection is identified by the virtual connection identifier;
the first relay node is used for distributing local communication network resources for the virtual connection according to the service quality requirement, and performing route calculation according to the mastered global topology information to obtain a next-hop relay node through calculation;
the next-hop relay node is used for calculating a next-hop relay node according to the calculation method of the first relay node, and repeating the process until reaching a second relay node associated with the destination node;
the second relay node associated with the destination node is used for distributing local communication network resources for the virtual connection and sending confirmation information to the upper relay node to indicate that the path is established;
and the upper-level relay node is used for sending the confirmation information to the upper-level relay node after receiving the confirmation information until the confirmation information reaches the first relay node associated with the source node, and the virtual connection is established.
7. The system of claim 6, wherein the source node or the first relay node is configured to generate a virtual connection identification.
8. The system of claim 6, wherein the virtual connection identifier comprises a connection domain,
connecting the source node identifier, the destination node identifier and the service identifier into a bit sequence, inputting the bit sequence into a hash function, and outputting to obtain a connection domain.
9. The system of claim 8, wherein the virtual connection identifier further comprises a service domain,
the service domain includes an indication field, or alternatively, the service domain includes an indication field and a quality of service requirement field,
the indication field is used to indicate whether a quality of service requirement field will appear.
10. A non-transitory computer readable storage medium having stored thereon a computer program which when executed by a processor implements the steps of the wireless elastic networking method for a mobile carrier of any of claims 1-4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310583967.6A CN116709571A (en) | 2023-05-23 | 2023-05-23 | Wireless elastic networking method and system for mobile carrier |
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| CN202310583967.6A CN116709571A (en) | 2023-05-23 | 2023-05-23 | Wireless elastic networking method and system for mobile carrier |
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