CN109905332B - Data sub-packaging and packet-fusing method and system based on multi-channel fusion communication - Google Patents
Data sub-packaging and packet-fusing method and system based on multi-channel fusion communication Download PDFInfo
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Abstract
A data sub-packaging and packet-fusing method and system based on multi-channel fusion communication are disclosed, wherein the method comprises the following steps: constructing a packetization mechanism according to the ratio of the bandwidths of a plurality of channels for converged communication; packetizing the sending data according to the bandwidth of the current communication channel and the packetizing mechanism; and performing packet fusing operation on the packet data according to the identification codes sequentially coded in the transmission message obtained by the sub-packet. The system comprises: a source terminal and a destination terminal, wherein the source terminal includes: a link monitoring device, a fusion subpackaging device, a multiplexing device and a fusion confirming device; the destination terminal comprises: and a channel fusion response device. The invention can flexibly carry out message conversion among multiple channels; and a multi-channel transmission mechanism is optimized in real time, so that the real-time performance of data transmission in a multi-channel network is improved, and the reliability of data transmission is improved.
Description
Technical Field
The invention relates to the field of communication methods or communication systems, in particular to a data sub-packaging and packet-fusing method and system based on multi-channel fusion communication.
Background
Data communication under a narrow-band network environment mostly adopts a data transmission mode based on a single channel; even if a plurality of communication channels coexist, data transmission between the channels is independent of each other, as shown in fig. 1.
For example, chinese utility model patent publication No. CN206350172U discloses a synthesize multichannel and insert adapter equipment, include the power module for the equipment power supply, still include main control chip, main control chip is connected with interface circuit, interface circuit includes signal channel mouth, remote control mouth, LAN mouth, three serial ports, minipCIE interface, and chain module and short wave transmission module are built to two serial ports connection shortwaves wherein, interface circuit's third serial ports still is connected with wired transmission module, interface circuit's LAN mouth is connected with wiFi route exchange module, interface circuit's minipCIE interface connection has wireless communication module.
For another example, chinese utility model patent publication No. CN204557780U discloses a wireless data transmission module of low-power consumption multichannel, including microprocessor chip, power control chip, communication module subassembly, the communication module subassembly includes mobile communication module, big dipper communication module, communication module between the local area network includes zigBee communication module, WIFI communication module, bluetooth communication module, infrared communication module. The microprocessor chip is connected with each module in the communication module assembly, and simultaneously controls the on-off of the power supply of each module in the communication module assembly through the power supply control chip. And the microprocessor chip is in communication connection with external terminal equipment and the communication module assembly through a serial data communication interface.
The existing transmission mode has the following problems:
1) when the single channel communication fails or is interrupted, the cross-channel transmission conversion needs manual intervention, system switching and other assistance, so that the data transmission is delayed and not real-time;
2) the problems of packet loss and repackage exist in the data transmission of the cross-channel, and the reliability cannot be guaranteed;
3) when the communication of the main channel is recovered, manual judgment and manual intervention are required, and the communication returns to the original channel for transmission;
disclosure of Invention
The invention aims to provide a data sub-packaging and packet-fusing method and system based on multi-channel fusion communication, which are realized by the following technical scheme. The method for packetizing and fusing data based on multi-channel fusion communication according to one aspect of the present invention includes: a data sub-packaging and packet-fusing method based on multi-channel fusion communication is characterized by comprising the following steps: constructing a subpackage mechanism according to the bandwidth ratio of a plurality of channels for converged communication; packetizing the sending data according to the bandwidth of the current communication channel and the packetizing mechanism; and performing packet fusing operation on the packet data according to the identification codes sequentially coded in the sending message obtained by the sub-packet.
Further, the bandwidth ratio is calculated by:
wherein, max (f)n) Maximum communication bandwidth, symbol for nth type narrow band communication
Denotes d's of'nAre corresponding integer ratios.
Further, the packet length of the packetized data packet is as follows:
where M (x) is the message length, phixFor maximum data transfer volume in channel X, fx' is the maximum communication bandwidth after the current communication channel specification.
Further, the plurality of channels all use a narrowband communication mode, including: low bandwidth satellite communication channel, shortwave channel and big dipper channel.
According to another aspect of the invention the system comprises: a source terminal and a destination terminal, wherein the source terminal includes: a link monitoring device, a fusion subpackaging device, a multiplexing device and a fusion confirming device; the destination terminal comprises: a channel fusion response means; the source terminal performs sub-packet on the sending data according to the bandwidth of the current channel and a sub-packet mechanism; after generating a sending message, inserting an identification code with a sequence number into the sending message and sending the sending message to a destination end; and after demodulating the received sending message, the destination performs packet fusion according to the sequence number of the corresponding identification code, thereby completing the multi-channel fusion communication process.
Preferably, the fusion packetizing means performs the steps of: inserting an identification code with a sequence number into a transmission message of a current channel after the transmission message is generated; when the current channel communication is abnormal, performing sub-packaging according to the switched bandwidth of the multiplexing channel and a sub-packaging mechanism; wherein the packetization process comprises:
wherein, max (f)n) Maximum communication bandwidth, symbol for nth type narrow band communicationDenotes d's of'nIs a corresponding integer ratio; m (x) is the message length, phixFor maximum data transfer volume in channel X, fx' is the maximum communication bandwidth after the current communication channel specification.
Preferably, the multiplexing device performs the steps of: receiving a sending message and an identification code thereof from the fusion subpackaging device; sending the sending message and the identification code thereof to a destination end, and sending a verification character or a character string to the destination end through one or more multiplexing channels each time according to a set frequency; obtaining the feedback rate and the feedback speed of one or more multiplexing channel destination terminals according to the feedback condition from the link monitoring device; sorting the multiplexing channels according to the feedback rate and the feedback speed of the destination end of the multiplexing channel or the destination ends of the multiplexing channels; the multiplex channel is a standby switching channel when the current communication channel has communication faults.
Preferably, the link monitoring device performs the following steps: monitoring the abnormal condition of the current communication channel state; and receiving feedback conditions of the plurality of multiplexing channels to the verification characters or the character strings, and sending the feedback conditions to the multiplexing device.
Preferably, the channel fusion response device executes the following steps: demodulating the received sending message and extracting effective information; converting effective information obtained through one or more channels into unique effective information through a corresponding conversion rule; fusing the unique effective information obtained through one or more channels according to the serial number of the identification code; and sending the fusion confirmation information to the source end.
Preferably, the fusion confirmation apparatus performs the steps of: if the fusion confirmation information is received, controlling to continue to communicate through the current channel; and if the fusion confirmation information is not received, controlling to switch to a multiplexing channel for communication.
The invention has the advantages that:
(1) a multi-channel fused data sub-packaging and packet fusing method is provided, and message conversion among multiple channels can be flexibly carried out.
(2) The technical scheme of multi-channel fusion data transmission is provided, a multi-channel transmission mechanism is optimized in real time, the real-time performance of data transmission in a multi-channel network is improved, and the reliability of data transmission is improved.
(3) The link state of each channel is intelligently maintained, quality attributes such as priority, reliability and the like are set for each channel, automatic maintenance and automatic switching of the channel link are provided, manual intervention is not needed, and the instantaneity of channel state discrimination is improved;
(4) the data transmission provides response confirmation, overtime retransmission and fault retransmission mechanisms, and the reliability of data transmission is guaranteed; the response confirmation mechanism is supported by crossing channels and is not limited to a single channel, so that the bandwidth is saved to the maximum extent, and the reliability of data transmission is ensured;
(5) in the multi-channel fusion communication environment, multiple channels are supported, and a certain channel also supports multiple channels, so that multiplexing of a single channel is realized, and the transmission frequency and the transmission quantity of the single channel are improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a flow chart of a data packet dividing and merging method based on multi-channel merging communication according to an embodiment of the invention.
Fig. 2 is a schematic diagram illustrating a multi-channel convergence-based communication system according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating an operation of a communication system based on multi-channel convergence according to an embodiment of the present invention.
Fig. 4 shows a flowchart of the operation of the fusion packetizing apparatus according to the embodiment of the present invention.
Fig. 5 shows a flow chart of the operation of a link monitoring device according to an embodiment of the invention.
Fig. 6 shows a flow chart of the operation of the multiplexing device according to an embodiment of the invention.
Fig. 7 shows a flow chart of the operation of the channel fusion answering device according to the embodiment of the invention.
Fig. 8 shows a flow chart of the operation of the fusion confirmation apparatus according to the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Fig. 1 is a flowchart of a data packetization and packet fusion method based on multi-channel fusion communication according to an embodiment of the present invention. Wherein the method comprises the following steps: constructing a packetization mechanism according to the ratio of the bandwidths of a plurality of channels for converged communication; packetizing the sending data according to the bandwidth of the current communication channel and the packetizing mechanism; and performing packet fusing operation on the packet data according to the identification codes sequentially coded in the transmission message obtained by the sub-packet. Wherein, a plurality of channels all adopt the narrowband communication mode, include: low bandwidth satellite communication channel, shortwave channel and big dipper channel. The method of the present invention is further explained below by taking the above three narrowband communication mode multi-channel converged communication systems as examples.
Specifically, the method for obtaining the ratio of the bandwidths of the multiple channels used for the converged communication includes:
wherein, max (f)1) Maximum communication bandwidth, max (f), for low bandwidth satellite communication channels2) Maximum bandwidth for short-wave channels, max (f)3) Maximum bandwidth, sign for the Beidou channel
Denotes d's of'1、 f′2And f'3The integer ratios are respectively corresponding to the last three narrowband communication modes.
The process is used for switching to another channel for communication if a current communication channel fails in the process of utilizing multiple channels for communication, and different channels (different channel types or different channel bandwidths) have different bandwidths, so that after packetization, an obtained message cannot be communicated through a narrower channel, and at the moment, the message needs to be packetized again. Therefore, the length of the message is determined according to the integral multiple of the bandwidths of the plurality of channels, so that the frequent packetization and packet fusion processes are facilitated. The length of the message can be determined by a formula:
wherein M (x) is the length of the message, phixIs the maximum data transfer amount, f 'in channel X'xThe bandwidth after the current communication channel specification, in this example, x ∈ (1,2,3) is the current communication channel; wherein, 1 is low bandwidth satellite communication channel, 2 is the shortwave channel, and 3 is big dipper channel. However, it should be noted that the present invention is not limited to the above three narrowband communication manners, the number of the multiple channels is not limited to three, and other narrowband communication manners and the corresponding number of channels are also within the protection scope of the present invention.
By the method of the formula (1) and the formula (2), the data can be flexibly subjected to sub-packaging and packet-fusing operations. In addition, the packet loss condition can be judged according to the continuity of the sequence numbers; namely, if the serial number is not continuous, the packet loss is considered to be released. The feedback rate is the ratio of the number of times of receiving feedback of the corresponding channel to the number of times of sending the verification character or the character string through the channel.
According to the data sub-packaging and packet-merging method based on multi-channel merging communication, the invention also designs a corresponding multi-channel merging communication system, and the specific content is disclosed as follows:
fig. 2 is a schematic diagram illustrating a multi-channel convergence-based communication system according to an embodiment of the present invention. Wherein, the communication system includes: a source terminal and a destination terminal, wherein the source terminal includes: a link monitoring device, a fusion subpackaging device, a multiplexing device and a fusion confirming device; the destination terminal comprises: a channel fusion response means; the source terminal performs sub-packaging on the target data according to the characteristics of the current channel and a sub-packaging mechanism; after generating a sending message, inserting an identification code with a sequence number into the sending message and sending the sending message to a destination end; and after demodulating the received sending message, the destination performs packet fusion according to the sequence number of the corresponding identification code, thereby completing the fusion of the received data.
Fig. 3 is a flowchart illustrating an operation of a communication system based on multi-channel convergence according to an embodiment of the present invention. Wherein the workflow comprises: sub-packaging the sending data by the fusion sub-packaging device according to the bandwidth of the current communication channel and a sub-packaging mechanism to obtain the data to be sent (sending message); then, response receiving is carried out through a fusion confirmation device, if the fusion confirmation device does not receive fusion confirmation information from a destination end, the current communication channel is switched, the multiplexing channel is switched to carry out communication, at the moment, the prepared channel is used as the current channel, and the switched channel is added into a multiplexing channel list; then, sub-packaging the sending data according to the bandwidth of the current communication channel and a sub-packaging mechanism to obtain a sending message, and sending the sending message to a destination end through a multiplexing device, in the process, re-sending the sending message according to set delay, if the sending is carried out twice, the destination end obtains the data to be sent, demodulating the data to be sent, carrying out a packet fusing operation, and then sending fusion confirmation information; and if the fusion confirmation device of the source end does not receive the fusion confirmation information sent by the destination end after the two transmissions, switching the channel to the multiplexing channel for communication.
Fig. 4 is a flowchart illustrating the operation of the fusion packetizing apparatus according to the embodiment of the present invention. Wherein, the work flow of the fusion subpackage device comprises: inserting an identification code with a sequence number into a transmission message of a current channel after the transmission message is generated; when the current channel communication is abnormal, performing sub-packaging according to the multiplexing channel bandwidth and a sub-packaging mechanism; when the current channel communication is normal, continuously performing sub-packaging according to the current channel bandwidth and a sub-packaging mechanism; wherein the packetization process comprises: solving the ratio of the maximum bandwidth of a plurality of channels, and rounding the ratio downwards; and performing sub-packaging according to the ratio of the current channel to the multiplexing channel after being rounded downwards. The algorithm involved in the sub-packaging process comprises the following steps:
wherein, max (f)1) Maximum communication bandwidth, max (f), for low bandwidth satellite communication channels2) Maximum bandwidth for short-wave channels, max (f)3) Maximum bandwidth, sign for the Beidou channel
Denotes rounding down, f1′、 f′2And f'3The integer ratios are respectively corresponding to the last three narrowband communication modes.
The process is used for switching to another channel for communication if a current communication channel fails in the process of utilizing multiple channels for communication, and different channels (different channel types or different channel bandwidths) have different bandwidths, so that after packetization, an obtained message cannot be communicated through a narrower channel, and at the moment, the message needs to be packetized again. Therefore, the length of the message is determined according to the integral multiple of the bandwidths of the plurality of channels, so that the frequent packetization and packet fusion processes are facilitated. The length of the message can be determined by a formula:
wherein M (x) is the length of the message, phixFor maximum data transfer volume in channel X, fx' is the bandwidth after the current communication channel specification, in this case, x ∈ (1,2,3) is the current communication channel; wherein, 1 is low bandwidth satellite communication channel, 2 is the shortwave channel, and 3 is big dipper channel. However, it should be noted that the present invention is not limited to the above three narrowband communication manners, the number of the multiple channels is not limited to three, and other narrowband communication manners and the corresponding number of channels are also within the protection scope of the present invention.
Fig. 5 is a flowchart illustrating an operation of a link monitoring apparatus according to an embodiment of the present invention. Wherein, the work flow of the link monitoring device comprises: monitoring the abnormal condition of the current communication channel state; and receiving feedback conditions of the plurality of multiplexing channels to the verification characters or the character strings, and sending the feedback conditions to the multiplexing device.
Wherein the abnormal condition comprises: the fusion confirmation device does not receive fusion confirmation information from the fusion response device
Fig. 6 is a flowchart illustrating the operation of the multiplexing apparatus according to the embodiment of the present invention. Wherein the work flow of the multiplexing device comprises: receiving a sending message and an identification code thereof from the fusion subpackaging device; sending the sending message and the identification code thereof to a destination end, and sending a verification character or a character string to the destination end through one or more multiplexing channels each time according to a set frequency; obtaining feedback rates and feedback speeds of destination terminals passing through a plurality of multiplexing channels according to feedback conditions from a link monitoring device; then, sorting the multiplexing channels according to the feedback rates and the feedback speeds of the multiplexing channels; the multiplex channel is a standby switching channel when the current communication channel has communication faults.
Specifically, the calculation formula of the feedback rate is as follows:
wherein, P is the feedback rate,
total number of times, n, that a verification character or string is transmitted for a link monitoring device over channel xxThe number of feedbacks of the verification character or string for channel x.
The ordering of the multiplexed channels comprises: respectively carrying out weighted summation on the feedback rate and the feedback speed; and sorting the multiplexing channels according to the weighted sum result, and then storing the multiplexing channels in a multiplexing channel list. In addition, a plurality of channels of the same type can be transmitted together by the multiplexing device.
Fig. 7 is a flowchart illustrating the operation of the channel fusion response apparatus according to the embodiment of the present invention. The working process of the channel fusion response device comprises the following steps: demodulating the received sending message and extracting effective information; converting effective information obtained through one or more channels into unique effective information through a corresponding conversion rule; and fusing the unique effective information obtained through different channels according to the serial numbers of the identification codes, and then sending fusion confirmation information to the source end.
Fig. 8 is a flowchart illustrating the operation of the fusion verification apparatus according to the embodiment of the present invention. Wherein, the workflow of the fusion confirmation device comprises: if the fusion confirmation information is received, continuing to communicate through the current channel; if the fusion confirmation information is not received, the sequencing of the multiplexing channels in the multiplexing channel list is obtained, and then the communication is tried to be established in sequence from high to low; if the response is overtime, switching to the next multiplexing channel; until after its communication is established, the communication is performed by the multiplexed channel of the acknowledgement. At this time, the multiplexed channel serves as the current communication channel.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. A data sub-packaging and packet-fusing method based on multi-channel fusion communication is characterized by comprising the following steps:
constructing a subpackage mechanism according to the bandwidth ratio of a plurality of channels for converged communication;
packetizing the sending data according to the bandwidth of the current communication channel and the packetizing mechanism;
performing packet fusing operation on the packet data according to the identification codes sequentially coded in the sending message obtained by the sub-packet; wherein
The calculation method of the bandwidth ratio comprises the following steps:
wherein, max (f)n) Maximum communication bandwidth, symbol for nth type narrow band communication
Denotes d's of'nIs a corresponding integer ratio;
the packet length of the packet is as follows:
where M (x) is the message length, phixFor maximum data transfer volume in channel X, fx' is the maximum communication bandwidth after the current communication channel is standardized, and x belongs to (1,2,3) as the current communication channel; wherein, 1 is low bandwidth satellite communication channel, 2 is the shortwave channel, and 3 is big dipper channel.
2. A communication system using the data packetization and fusion method according to claim 1, the communication system comprising: a source terminal and a destination terminal, wherein the source terminal includes: a link monitoring device, a fusion subpackaging device, a multiplexing device and a fusion confirming device; the destination terminal comprises: a channel fusion response means;
the source terminal performs sub-packet on the sending data according to the bandwidth of the current channel and a sub-packet mechanism; after generating a sending message, inserting an identification code with a sequence number into the sending message and sending the sending message to a destination end; after demodulating the received sending message, the destination performs packet fusion according to the sequence number of the corresponding identification code, thereby completing the multi-channel fusion communication process; wherein,
the fusion subpackaging device executes the following steps:
inserting an identification code with a sequence number into a transmission message of a current channel after the transmission message is generated;
when the current channel communication is abnormal, performing sub-packaging according to the switched bandwidth of the multiplexing channel and a sub-packaging mechanism; wherein the packetization process comprises:
wherein, max (f)n) Maximum communication bandwidth, symbol for nth type narrow band communication
Denotes d's of'nIs a corresponding integer ratio; m (x) is the message length, phixFor maximum data transfer volume in channel X, fx' is the maximum communication bandwidth after the current communication channel is standardized;
the multiplexing device performs the steps of:
receiving a sending message and an identification code thereof from the fusion subpackaging device;
sending the sending message and the identification code thereof to a destination end, and sending a verification character or a character string to the destination end through one or more multiplexing channels each time according to a set frequency;
obtaining the feedback rate and the feedback speed of one or more multiplexing channel destination terminals according to the feedback condition from the link monitoring device;
sorting the multiplexing channels according to the feedback rate and the feedback speed of the destination end of the multiplexing channel or the destination ends of the multiplexing channels; wherein,
the multiplexing channel is a standby switching channel when the current communication channel has communication faults;
the calculation formula of the feedback rate is as follows:
wherein, P is the feedback rate,
total number of times, n, that a verification character or string is transmitted for a link monitoring device over channel xxThe number of feedbacks of the verification character or string for channel x.
3. The system according to claim 2, wherein the link monitoring device performs the following steps:
monitoring the abnormal condition of the current communication channel state;
and receiving feedback conditions of the plurality of multiplexing channels to the verification characters or the character strings, and sending the feedback conditions to the multiplexing device.
4. The communication system based on multi-channel fusion of claim 2, wherein the channel fusion response means performs the following steps:
demodulating the received sending message and extracting effective information;
converting effective information obtained through one or more channels into unique effective information through a corresponding conversion rule;
fusing the unique effective information obtained through one or more channels according to the serial number of the identification code;
and sending the fusion confirmation information to the source end.
5. The system according to claim 2, wherein the convergence check device performs the following steps:
if the fusion confirmation information is received, controlling to continue to communicate through the current channel;
and if the fusion confirmation information is not received, controlling to switch to a multiplexing channel for communication.
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