CN111817957A - Multi-channel cooperative communication device, communication system and communication method - Google Patents
Multi-channel cooperative communication device, communication system and communication method Download PDFInfo
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- CN111817957A CN111817957A CN202010603098.5A CN202010603098A CN111817957A CN 111817957 A CN111817957 A CN 111817957A CN 202010603098 A CN202010603098 A CN 202010603098A CN 111817957 A CN111817957 A CN 111817957A
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- 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
- H04L45/24—Multipath
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/63—Routing a service request depending on the request content or context
Abstract
The invention provides a multi-channel cooperative communication device, a communication system and a communication method, wherein the multi-channel transmission and the multi-channel reception of data are realized through the multi-channel cooperative communication device; a binding relation table of a plurality of data transmission links and sessions is arranged in the multi-path cooperative communication device; when data is sent, according to the destination address of an IP data packet to be sent, searching a data transmission link with a link state being available from the binding relation table, packaging and sending out through the data transmission link; and after receiving the packet, judging whether the IP data packet in the packet is the first IP data packet or not according to the binding relation table, and if so, sending the IP data packet out. Therefore, through multi-channel transmission and reception of data, the data to be sent can reach the target device in each communication.
Description
Technical Field
The invention relates to the field of mobile internet communication, in particular to a multi-channel cooperative communication device, a multi-channel cooperative communication system and a multi-channel cooperative communication method.
Background
With the rapid development of the mobile internet technology, the service system is docked through the mobile internet, so that the environment deployment of users is facilitated. However, in a closed and complex environment such as a subway, the signal strength in different areas is different due to the influence of network coverage of an operator, so that the communication information sent by a sender cannot necessarily reach a destination address; the existing solution is to realize signal coverage of three operators simultaneously in a closed and complex environment such as a subway, and when a signal of one operator is weak, a sender can quickly identify and automatically switch a strong operator network, thereby ensuring signal connection of a train.
However, in this case, in order to realize real-time identification of the network signal strength of the operator, the sender needs to continuously perform network traffic with the receiver, thereby occupying a large amount of network resources of the operator; meanwhile, because the network coverage of the operator is dynamically changed, the situation that the data cannot be reached on time or cannot be reached due to the fact that the network signal of the operator is strong before the data is sent and the network signal of the operator is weak in the data sending process easily occurs.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a multi-path cooperative communication device, a communication system and a communication method.
In order to achieve the purpose, the invention adopts the technical scheme that: a multi-way cooperative communication apparatus comprising:
each access port is provided with a plurality of IP addresses, and each IP address corresponds to one path of data transmission link and is used for realizing data receiving and transmitting;
the session management module is connected with the access port and internally provided with a binding relation table of the link states and the session numbers of the multi-channel data transmission link; the binding relation table comprises a session number corresponding to each data transmission link, a link state, and port numbers and IP addresses of access ports at two ends of the link, wherein the link state comprises three states of availability, waiting and disconnection;
when the session management module sends data, executing: receiving an IP data packet to be sent, wherein the IP data packet comprises a message number and a destination IP address; according to the destination IP address of the IP data packet to be sent and the binding relation table, searching a link state from the binding relation table to be an available data transmission link, packaging the IP data packet into an IP packet according to the available data transmission link, and then sending the IP packet out through the data transmission link;
when the session management module receives the data, executing: receiving the IP packet to be received through the data transmission link, and returning a receiving response through the data transmission link; searching whether an IP data packet with the same message number exists according to the message number of the IP data packet in the IP packet, if not, judging that the IP data packet is a first IP data packet, and sending out the first IP data packet;
the receiving and sending management module is connected with the session management module and used for sending an IP data packet to the session management module and receiving the IP data packet sent by the session management module.
Based on the above, the IP packet includes link statuses of multiple data transmission links;
and after receiving the first IP data packet, the session management module updates the link states of the multiple data transmission links in the binding relation table according to the received link states of the multiple data transmission links.
Based on the above, after receiving the first IP data packet by the data transmission link, the session management module searches for a data transmission link with a link state that is available from the updated binding relationship table according to the source IP and the port of the data transmission link corresponding to the first IP data packet, and determines whether the data transmission link with the link state that is available does not receive the IP packet within a preset time, and if so, updates the link state of the data transmission link to be unavailable.
Based on the above, after the session management module sends the IP packet through the data transmission link, it is determined whether the data transmission link receives a reception response within a preset time, and if not, the link status of the data transmission link is updated to be unavailable.
Based on the above, the session management module updates the binding relationship table at regular time.
Based on the above, the session management module reorders the acquired IP data packets according to the message number.
A second aspect of the present invention provides a multi-path cooperative communication system, which includes a service server and at least one service client, where the service server and the service client are both provided with a gateway device and the multi-path cooperative communication device;
the service server side and the service client side are both connected with the multi-channel cooperative communication devices through the gateway equipment, and any two multi-channel cooperative communication devices are in communication connection through multi-channel data transmission links.
Based on the above, the gateway device of the service server side is a VPN server, and the gateway device of the service client side is a VPN client side.
The third aspect of the present invention provides a communication method applied to the above-mentioned multi-path cooperative communication system, including the following steps:
the service server side and the service client side are a transmitting side and a receiving side;
a sender sends a service message to gateway equipment of the sender; the gateway equipment of the sender encapsulates the service message to obtain an IP data packet and sends the IP data packet to the multi-channel cooperative communication device of the sender, wherein the IP data packet comprises a target IP address and a message number;
after receiving the IP data packet, the multi-path cooperative communication device of the sender searches for an available data transmission link in the link state from the binding relation table according to the destination IP address of the IP data packet to be sent, encapsulates the IP data packet into an IP packet according to the available data transmission link, and then sends the IP packet to the multi-path cooperative communication device of the receiver through the data transmission link;
the multi-channel cooperative communication device of the receiver receives the IP packet to be received through the data transmission link, searches whether an IP data packet with the same message number exists according to the message number of the IP data packet in the IP packet, and judges that the IP data packet is a first IP data packet if the IP data packet does not exist, and sends the first IP data packet to the gateway equipment of the receiver;
and after the gateway equipment of the receiver decapsulates the IP data packet, obtaining a service message and sending the service message to the receiver.
Based on the above, after the multi-path cooperative communication device of the sender sends the IP packet through the data transmission link, it is determined whether the data transmission link receives a reception response within a preset time, and if not, the link status of the data transmission link is updated to be unavailable;
after receiving the first IP packet through the data transmission link, the multi-path cooperative communication device of the receiver updates the link states of the multi-path data transmission links in the binding relation table according to the received link states of the multi-path data transmission links;
and searching for a data transmission link with an available link state from the updated binding relation table according to the source IP and the port of the data transmission link corresponding to the first IP data packet, judging whether the data transmission link with the available link state does not receive the IP packet set within preset time, and if so, updating the link state of the data transmission link to be unavailable.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and particularly, the invention establishes a plurality of data transmission links and a binding relation table of the session in a session management module in a multi-path cooperative communication device; when data is sent, according to the destination IP address of an IP data packet to be sent, searching a data transmission link with a link state being available from the binding relation table, packaging the IP data packet into an IP packet according to the available data transmission link, and then sending the IP packet out through the data transmission link; when receiving data, receiving the IP packet to be received through the data transmission link, and returning a receiving response through the data transmission link; searching whether an IP data packet with the same message number exists according to the message number of the IP data packet in the IP packet, if not, judging that the IP data packet is a first IP data packet, and sending the first IP data packet out; therefore, through multi-channel transmission and reception of data, the data to be sent can reach the target device in each communication.
The invention also constructs a multi-channel cooperative communication system, realizes the multi-channel simultaneous transmission of data by the multi-channel cooperative communication devices arranged at the service server end and the service client end, and selects a complete data packet which is reached at first to be fastened when receiving the data; because the same data packet can be transmitted simultaneously through a plurality of data transmission links, the signal attenuation of a single data transmission link does not influence the continuity of communication information, thereby providing network layer redundancy for both data transceivers and ensuring the reliability of each communication; and the process does not need real-time interaction of a sender and a receiver to confirm whether the network is reachable, thereby reducing the occupation of network resources of operators.
The invention puts the multi-link transmission which is originally realized in the application layer to the link layer through the gateway equipment arranged at the service server end and the service client end, reduces the storage space which is originally needed to be opened up in the memory by the application layer to buffer the out-of-order data packets sent by different data transmission links, and improves the utilization rate of the memory.
Drawings
FIG. 1 is a schematic block diagram of embodiment 1 of the present invention
Fig. 2 is a schematic block diagram of embodiment 2 of the present invention.
FIG. 3 is a schematic flow chart of embodiment 3 of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
As shown in fig. 1, a multi-path cooperative communication apparatus includes:
each access port is provided with a plurality of IP addresses, and each IP address corresponds to one path of data transmission link and is used for realizing data receiving and transmitting; the data transmission link includes but is not limited to a telecommunication wired channel, a mobile wired channel, a communication wired channel, a telecommunication wireless channel, a mobile wireless channel, and a communication wireless channel;
the session management module is connected with the access port and internally provided with a binding relation table of the link states and the session numbers of the multi-channel data transmission link; the binding relation table comprises a session number corresponding to each data transmission link, a link state, and port numbers and IP addresses of access ports at two ends of the link, wherein the link state comprises three states of availability, waiting and disconnection;
when the session management module sends data, executing: receiving an IP data packet to be sent, wherein the IP data packet comprises a message number and a destination IP address; according to the destination IP address of the IP data packet to be sent and the binding relation table, searching a link state from the binding relation table to be an available data transmission link, packaging the IP data packet into an IP packet according to the available data transmission link, and then sending the IP packet out through the data transmission link;
when the session management module receives the data, executing: receiving the IP packet to be received through the data transmission link, and returning a receiving response through the data transmission link; searching whether an IP data packet with the same message number exists according to the message number of the IP data packet in the IP packet, if not, judging that the IP data packet is a first IP data packet, and sending out the first IP data packet;
the receiving and sending management module is connected with the session management module and used for sending an IP data packet to the session management module and receiving the IP data packet sent by the session management module.
Specifically, the multi-path cooperative communication device further includes a link management module, where the link management module is connected to the access port and is used to establish, maintain, and cancel a data transmission link corresponding to each IP address.
In a specific implementation process, the IP group package further includes link statuses of multiple data transmission links.
Further, after receiving the first IP data packet, the session management module updates the link states of the multiple data transmission links in the binding relationship table according to the received link states of the multiple data transmission links.
Further, after receiving the first IP data packet by the data transmission link, the session management module searches for a data transmission link with a link status of available from the updated binding relationship table according to the source IP and the port of the data transmission link corresponding to the first IP data packet, and determines whether the data transmission link with the link status of available does not receive the IP packet within a preset time, and if so, updates the link status of the data transmission link to unavailable.
In a specific implementation process, after the session management module sends the IP packet through the data transmission link, it is determined whether the data transmission link receives a reception response within a preset time, and if not, the link status of the data transmission link is updated to be unavailable.
The above-mentioned mode makes sender and receiver can upgrade the link state of the multi-channel data transmission link in the binding relation table according to the real-time communication situation, further ensure the accessibility of the message.
Specifically, the session management module updates the binding relationship table at regular time to obtain the latest link state of the multiple data transmission links, which is beneficial for both communication parties to obtain the latest link state when communication is not performed for a long time, and ensures that the message can be reached.
Specifically, the session management module reorders the acquired IP data packets according to the message numbers to achieve ordered transceiving of the IP data packets.
Example 2
A second aspect of the present invention provides a multi-path cooperative communication system, as shown in fig. 2, including a service server and at least one service client, where the service server is provided with a first gateway device and a first multi-path cooperative communication device, and the service clients are provided with a second gateway device and a second multi-path cooperative communication device; the first multi-path cooperative communication device and the second multi-path cooperative communication device are both the aforementioned multi-path cooperative communication device.
The service server side is connected with the first multi-channel cooperative communication device through the first gateway equipment, and the service client side is connected with the second multi-channel cooperative communication device through the second gateway equipment; the first multi-path cooperative communication device and the second multi-path cooperative communication device are in communication connection through a multi-path data transmission link.
In a specific implementation process, as required, the first gateway device of the service server may be set as a VPN server, and the second gateway device of the service client may be set as a VPN client. The VPN server and the VPN client can provide encryption service for business information while putting down multilink transmission which is originally realized in an application layer to a link layer.
Example 3
A third aspect of the present invention provides a communication method applied to the above-mentioned multi-path cooperative communication system, wherein the service server and the service client are both a transceiver; as shown in fig. 3, when the service server is a sender and the service client is a receiver, the communication method includes the following steps:
the service server side sends a service message to the first gateway device; the first gateway equipment encapsulates the service message to obtain an IP data packet and sends the IP data packet to the multi-channel cooperative communication device of the sender, wherein the IP data packet comprises a target IP address and a message number;
after receiving the IP data packet, the first multi-channel cooperative communication device searches for an available data transmission link in the link state from the binding relation table according to a target IP address of the IP data packet to be sent, encapsulates the IP data packet into an IP packet according to the available data transmission link, and then sends the IP packet to a second multi-channel cooperative communication device through the data transmission link;
the second multi-path cooperative communication device receives the IP packet to be received through the data transmission link, searches whether an IP data packet with the same message number exists according to the message number of the IP data packet in the IP packet, and judges that the IP data packet is a first IP data packet if the IP data packet does not exist, and sends the first IP data packet to the second gateway equipment;
and after the second gateway equipment unpacks the IP data packet, obtaining a service message and sending the service message to a service client.
When the service client is the sender and the service server is the receiver, the communication method is the reverse process of the above communication method, which is not described herein again.
In a specific implementation process, after the multi-path cooperative communication device of the sender sends the IP packet through the data transmission link, whether the data transmission link receives a receiving response within a preset time is judged, and if the data transmission link does not receive the receiving response, the link state of the data transmission link is updated to be unavailable;
after receiving the first IP packet through the data transmission link, the multi-path cooperative communication device of the receiver updates the link states of the multi-path data transmission links in the binding relation table according to the received link states of the multi-path data transmission links;
and searching for a data transmission link with an available link state from the updated binding relation table according to the source IP and the port of the data transmission link corresponding to the first IP data packet, judging whether the data transmission link with the available link state does not receive the IP packet set within preset time, and if so, updating the link state of the data transmission link to be unavailable.
The sender and the receiver update the link states of the multiple data transmission links in the binding relation table according to the real-time communication condition, and the message can be further ensured to be reachable.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. A multi-way cooperative communication apparatus, characterized in that: comprises that
Each access port is provided with a plurality of IP addresses, and each IP address corresponds to one path of data transmission link and is used for realizing data receiving and transmitting;
the session management module is connected with the access port and internally provided with a binding relation table of the link states and the session numbers of the multi-channel data transmission link; the binding relation table comprises a session number corresponding to each data transmission link, a link state, and port numbers and IP addresses of access ports at two ends of the link, wherein the link state comprises three states of availability, waiting and disconnection;
when the session management module sends data, executing: receiving an IP data packet to be sent, wherein the IP data packet comprises a message number and a destination IP address; according to the destination IP address of the IP data packet to be sent and the binding relation table, searching a link state from the binding relation table to be an available data transmission link, packaging the IP data packet into an IP packet according to the available data transmission link, and then sending the IP packet out through the data transmission link;
when the session management module receives the data, executing: receiving the IP packet to be received through the data transmission link, and returning a receiving response through the data transmission link; searching whether an IP data packet with the same message number exists according to the message number of the IP data packet in the IP packet, if not, judging that the IP data packet is a first IP data packet, and sending out the first IP data packet;
the receiving and sending management module is connected with the session management module and used for sending an IP data packet to the session management module and receiving the IP data packet sent by the session management module.
2. The multi-way cooperative communication apparatus according to claim 1, wherein: the IP group package also comprises link states of a plurality of data transmission links;
and after receiving the first IP data packet, the session management module updates the link states of the multiple data transmission links in the binding relation table according to the received link states of the multiple data transmission links.
3. The multi-way cooperative communication apparatus according to claim 2, wherein: and after receiving the first IP data packet through the data transmission link, the session management module searches for the data transmission link with the link state being available from the updated binding relationship table according to the source IP and the port of the data transmission link corresponding to the first IP data packet, judges whether the data transmission link with the link state being available does not receive the IP group packet within preset time, and updates the link state of the data transmission link into unavailable if the data transmission link with the link state being available does exist.
4. The multi-way cooperative communication device according to any one of claims 1 to 3, wherein: and after the session management module sends the IP packet through the data transmission link, judging whether the data transmission link receives a receiving response within preset time, and if not, updating the link state of the data transmission link to be unavailable.
5. The multi-way cooperative communication device according to any one of claims 1 to 3, wherein: and the session management module updates the binding relation table at regular time.
6. The multi-way cooperative communication device according to any one of claims 1 to 3, wherein: and the session management module reorders the acquired IP data packets according to the message numbers.
7. A multi-path cooperative communication system, characterized by: the multi-path cooperative communication device comprises a service server side and at least one service client side, wherein the service server side and the service client side are both provided with gateway equipment and the multi-path cooperative communication device as claimed in any one of claims 1 to 6;
the service server side and the service client side are both connected with the multi-channel cooperative communication devices through the gateway equipment, and any two multi-channel cooperative communication devices are in communication connection through multi-channel data transmission links.
8. A multi-path cooperative communication system according to claim 8, wherein: the gateway device of the service server side is a VPN server, and the gateway device of the service client side is a VPN client side.
9. A communication method applied to the multiplex cooperative communication system according to claim 7 or 8, characterized in that: the service server side and the service client side are a transmitting side and a receiving side;
a sender sends a service message to gateway equipment of the sender; the gateway equipment of the sender encapsulates the service message to obtain an IP data packet and sends the IP data packet to the multi-channel cooperative communication device of the sender, wherein the IP data packet comprises a target IP address and a message number;
after receiving the IP data packet, the multi-path cooperative communication device of the sender searches for an available data transmission link in the link state from the binding relation table according to the destination IP address of the IP data packet to be sent, encapsulates the IP data packet into an IP packet according to the available data transmission link, and then sends the IP packet to the multi-path cooperative communication device of the receiver through the data transmission link;
the multi-channel cooperative communication device of the receiver receives the IP packet to be received through the data transmission link, searches whether an IP data packet with the same message number exists according to the message number of the IP data packet in the IP packet, and judges that the IP data packet is a first IP data packet if the IP data packet does not exist, and sends the first IP data packet to the gateway equipment of the receiver;
and after the gateway equipment of the receiver decapsulates the IP data packet, obtaining a service message and sending the service message to the receiver.
10. The communication method of the multi-path cooperative communication system according to claim 9, characterized in that: after the multi-channel cooperative communication device of the sender sends the IP packet through the data transmission link, whether the data transmission link receives a receiving response within preset time is judged, and if the data transmission link does not receive the receiving response, the link state of the data transmission link is updated to be unavailable;
after receiving the first IP packet through the data transmission link, the multi-path cooperative communication device of the receiver updates the link states of the multi-path data transmission links in the binding relation table according to the received link states of the multi-path data transmission links;
and searching for a data transmission link with an available link state from the updated binding relation table according to the source IP and the port of the data transmission link corresponding to the first IP data packet, judging whether the data transmission link with the available link state does not receive the IP packet set within preset time, and if so, updating the link state of the data transmission link to be unavailable.
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