CN111181675A - Emergency broadcast multi-path concurrent communication method, device and system - Google Patents
Emergency broadcast multi-path concurrent communication method, device and system Download PDFInfo
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- CN111181675A CN111181675A CN202010038387.5A CN202010038387A CN111181675A CN 111181675 A CN111181675 A CN 111181675A CN 202010038387 A CN202010038387 A CN 202010038387A CN 111181675 A CN111181675 A CN 111181675A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
Abstract
The invention relates to the technical field of emergency broadcast communication, in particular to an emergency broadcast multi-path concurrent communication method, device and system. The method is applied to a communication system and comprises the following steps: receiving data information sent by a sending end, and writing a data packet into a first memory; acquiring communication information of a receiving end, and writing the communication information into a first memory; reading the data packet in the first memory and writing the data packet into the first buffer according to the reading parameters of the first memory and the first buffer; reading the data packet in the first buffer, marking an identifier, packaging to obtain a communication data packet and sending the communication data packet; and repeatedly reading the first buffer, and generating and transmitting the communication data packet. The invention has universality, is simple to realize, does not need a large amount of cache, can effectively reduce the complexity of realization and the occupancy rate of resources, accelerates the transmission speed of emergency broadcasting, reduces the number of upper-level transmitting ends, and greatly saves the cost of the emergency broadcasting.
Description
Technical Field
The invention relates to the technical field of emergency broadcast communication, in particular to an emergency broadcast multi-path concurrent communication method, device and system.
Background
The emergency broadcast can provide a rapid and quick message transmission channel, and is usually used by docking upper and lower platforms in a use scene to perform control stage by stage. Information interaction between the upper and lower levels is generally performed using IP communication. Although the hierarchy is obvious, sometimes there are cases where the number of lower platforms or terminals that a single upper control platform interfaces with is large, for example, there are not a few village-level adapters corresponding to county-level adapters, and because of the specificity and timeliness of emergency broadcast use, if the upper platform does not properly process the instructions or data of multiple lower platforms or terminals, the delay between the data or instructions received by some lower platforms or terminals may be too large, and finally the time for completing the whole system may be too long, and the consequences thereof may be very serious.
For this situation, currently, there is no method or device in the industry that can quickly complete the uplink and downlink communication of emergency broadcast, and a common method is to add multiple upper platforms and process lower platforms at the same time, so as to speed up the transmission, but doing so will lead to a sharp increase in the cost of the whole system, and the operating and management costs will also increase accordingly.
Disclosure of Invention
The present invention provides an emergency broadcast multi-path concurrent communication method, apparatus and system to overcome at least one of the above-mentioned drawbacks (shortcomings) of the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an emergency broadcast multi-path concurrent communication method is applied to a communication system, and comprises the following steps:
receiving data information sent by a sending end, processing the data information to obtain a data packet, and writing the data packet into a first memory;
acquiring communication information of a receiving end, and writing the communication information into a first memory;
reading the data packet in the first memory and writing the data packet into the first buffer according to the reading parameters of the first memory and the first buffer;
reading a data packet in the first buffer, marking an identifier, packaging the data packet and corresponding communication information to obtain a communication data packet and sending the communication data packet;
and repeatedly reading the first buffer according to the number of the receiving ends, and generating and sending the communication data packet.
Further, after writing the data packet and the communication information into the first memory, the method further includes:
and writing the communication information in the first memory into the second buffer according to the reading parameters of the first memory and the second buffer.
Further, the receiving data information sent by the sending end, processing the data information to obtain a data packet, and writing the data packet into the first memory includes:
receiving data information sent by a sending end;
analyzing the data information to obtain effective information;
splitting the effective information to obtain a data packet with a fixed size;
the data packet is written to a first memory.
Further, the reading the data in the first memory and writing the data into the first buffer according to the read parameters of the first memory and the first buffer includes:
judging whether to read data according to the reading parameters of the first memory and the first buffer;
if yes, reading the data packet in the first memory;
writing the data packet into a first buffer;
if not, carrying out re-judgment after a preset time interval.
Further, the reading the data packet in the first buffer and marking an identifier, and encapsulating the data packet and the corresponding communication information to obtain a communication data packet and sending the communication data packet includes:
reading the data packet in the first buffer, and performing identification processing on the data packet;
distributing according to the identification information of the data packet, and encapsulating the data packet and the corresponding communication information to obtain a communication data packet;
and sending the communication data packet to a receiving end platform.
Further, the repeatedly reading the first buffer according to the number of the receiving ends, generating and sending the communication data packet includes
Comparing the repeated reading parameters with the number of the receiving ends, and judging whether to continue reading;
if yes, reading the data packet in the first memory;
and repeating the writing and reading in the first buffer, the packaging of the data packet and the sending of the communication data packet.
The invention also provides an emergency broadcast multi-path concurrent communication device which is applied to a communication system and comprises a processor, a first memory, a first buffer and a packaging unit, wherein the processor is electrically connected with the first memory, the first buffer and the packaging unit;
the processor calls the first memory, the first buffer and the encapsulation unit to perform the steps of:
receiving data information sent by a sending end, processing the data information to obtain a data packet, and writing the data packet into a first memory;
acquiring communication information of a receiving end, and writing the communication information into a first memory;
reading the data packet in the first memory and writing the data packet into the first buffer according to the reading parameters of the first memory and the first buffer;
reading a data packet in the first buffer, marking an identifier, packaging the data packet and corresponding communication information to obtain a communication data packet and sending the communication data packet;
and repeatedly reading the first buffer according to the number of the receiving ends, and generating and sending the communication data packet.
Further, the method also comprises the following steps:
and the second buffer is used for writing and reading according to the instruction of the processor and is used for buffering the communication data of the receiving end.
Further, the first memory is a DDR, and the first buffer is a RAM.
The invention also provides an emergency broadcast multi-path concurrent communication system, which comprises:
the sending end sends data and instructions to be broadcasted;
the receiving end receives data and instructions sent by the superior sending end; and
the communication device is used for receiving the data sent by the sending end, processing the data and distributing the data to the lower receiving end.
The invention has universality and can be used in the situation of one-path data multi-path concurrence; meanwhile, the method is simple to implement, a large amount of cache is not needed, the implementation complexity and the resource occupancy rate can be effectively reduced, the transmission speed of the emergency broadcast is increased, the number of the upper-level transmitting terminals is reduced, and therefore the cost of the emergency broadcast is greatly saved.
Drawings
Fig. 1 is a flowchart illustrating an implementation of a communication method according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a step 101 of a communication method according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating a step 103 of a communication method according to an embodiment of the present invention.
Fig. 4 is a flowchart illustrating a step 104 of a communication method according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating a step 105 of a communication method according to an embodiment of the present invention.
Fig. 6 is a block diagram of a communication device according to an embodiment of the invention.
Fig. 7 is a block diagram of a communication system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a flow of implementing an emergency broadcast multi-path concurrent communication method according to an embodiment of the present application is shown.
As shown in fig. 1, the emergency broadcast multi-path concurrent communication method is applied to a communication system, and specifically includes:
101. and receiving the data information sent by the sending end, processing the data information to obtain a data packet, and writing the data packet into the first memory.
The sending end specifically refers to a platform for sending instructions at a higher level, and data information is processed and put into a memory of the communication device in order to be quickly sent to a plurality of lower receiving ends after data is sent. For example, the received data information is IP information, the header of the IP information is removed, and the header is analyzed to remove invalid information, thereby obtaining valid information.
Specifically, when the valid information is placed in the first memory, the valid information needs to be split into a plurality of data packets with fixed sizes, and then the data packets are written into the first memory for subsequent retrieval processing. The size of the fixed data packet is used for facilitating the processing of subsequent data.
102. And acquiring communication information of the receiving end, and writing the communication information into the first memory.
The acquired communication information can be acquired through external software in order to ensure that the data can be accurately and quickly transmitted to the corresponding lower-level receiving end. For example, the IP header information of the lower receiving end is obtained by the IP header obtaining software.
103. And reading the data packet in the first memory and writing the data packet into the first buffer according to the reading parameters of the first memory and the first buffer.
In this embodiment, the reading parameter of the first memory is defined as PNUM0, PNUM0 is used to indicate the number of cache packets in the first memory, and the number is automatically increased or decreased when the first memory receives a read/write request from the processor, for example, when writing data, when PNUM0 is 0, the processor starts to write data to the first memory, and adds PNUM0 by one until all the data packets are written.
Similarly, the read/write parameter of the first buffer is defined as PNUM 1.
The maximum number of buffered packets in the first buffer may be 2, or of course, may be adjusted as needed. And judging whether the writing in of the first buffer is started or not according to the maximum buffer packet number of the first buffer. For example, in reading a packet in the first memory and writing to the first buffer, when PNUM0 is not 0 and PUNM1 is not 2, the first memory packet is read and written to the first buffer. After the process is finished, PNUM0 is decreased by one, and PNNM 1 is increased by one.
104. And reading the data packet in the first buffer, marking an identifier, packaging the data packet and corresponding communication information to obtain a communication data packet and sending the communication data packet.
When the PUNM1 is not 0, the data packet in the first buffer is read and processed for identification, the identification is used for distinguishing, and the data packet is encapsulated with corresponding communication information according to the identification information, and after the process, the PNUM1 is reduced by one. Of course, the identification information may be eliminated after the encapsulation is completed.
Specifically, the communication data packet is sent to the lower receiving end in the form of IP.
105. And repeatedly reading the first buffer according to the number of the receiving ends, and generating and sending the communication data packet.
In this embodiment, the number of the receiving terminals is defined as N, the number of times of reading the first buffer is defined as M, and M is initially 0, when the first buffer is read once, M is incremented, and whether to continue reading is determined according to the number M, N, thereby implementing repeated reading of the first buffer and communication between the sending terminal and the plurality of lower receiving terminals.
For example, when PUNM1 is not 0, the reading of the packet in the first buffer is repeated until when M = N. And when M = N, finishing the communication of the data packet of the current address of the first memory, resetting each parameter, adjusting the reading address of the first memory, and continuously sending the data packet of the next address of the first memory. And further complete the communication transmission of a whole section of effective data.
In some embodiments, the method further comprises, after writing the data packet and the communication information to the first memory:
and writing the communication information in the first memory into the second buffer according to the reading parameters of the first memory and the second buffer.
During packaging, the processor can call the communication information through the second buffer to accelerate the calling speed of the communication information, and certainly, the processor can also directly call the communication information through the first memory to package the communication information.
Preferably, the first Memory is a DDR (Double Data Rate SDRAM), and the first buffer is a RAM (Random Access Memory).
Referring to fig. 2, a flow chart of receiving data information sent by a sending end, processing the data information to obtain a data packet, and writing the data packet into a first memory according to the embodiment of the present application is shown.
As shown in fig. 2, an implementation procedure for receiving data information sent by a sending end, processing the data information to obtain a data packet, and writing the data packet into a first memory includes:
201. and receiving data information sent by a sending end.
Specifically, the data information may be an IP packet.
202. And analyzing the data information to obtain effective information.
The analysis process comprises taking out the IP packet head and screening out the invalid information so as to obtain the valid information
203. And splitting the effective information to obtain a data packet with a fixed size.
Preferably, the size of the data packet may be set to 384 bytes.
204. The data packet is written to a first memory.
Referring to fig. 3, a flow chart of reading data in the first memory and writing the data into the first buffer according to the read parameters of the first memory and the first buffer according to the embodiment of the present application is shown.
As shown in fig. 3, reading data in the first memory and writing the data into the first buffer according to the read parameters of the first memory and the first buffer includes:
301. and judging whether to read data according to the reading parameters of the first memory and the first buffer.
In this embodiment, the number of packets that can be stored by DDR is 256, and the number of packets that can be stored by RAM is 2, so the maximum values of PUNM0 and PUNM1 are 256 and 2, respectively. Specifically, when determining that PUNM0 is not 0 and PUNM1 is not 2, that is, when there is a packet in the first memory and there is a space in the first buffer where data can be written, data is read.
302. If yes, reading the data packet in the first memory.
303. The data packet is written to the first buffer.
The processor calls the data packet in the first memory and writes the data packet into the first buffer, so that the subsequent packaging speed is increased.
More specifically, in order to improve efficiency, in the process of repeatedly reading a data packet in the first memory, when the data packet is read for the first time, subsequent reading may be performed without re-invoking by the processor, and the data packet may be directly written into the first buffer according to a command or an interface change stored in the first memory, for example, after the condition of step 301 is satisfied, the data packet in the first memory may be unconditionally read and written into the first buffer, without intervention of the processor.
304. If not, carrying out re-judgment after a preset time interval.
Specifically, in order to improve the processing efficiency, the preset time may be adjusted to 0, that is, if the processor determines that the processing is not performed, the processing returns to perform the re-determination.
Referring to fig. 4, a flow for reading a data packet in a first buffer, marking the data packet, encapsulating the data packet and corresponding communication information, obtaining a communication data packet, and sending the communication data packet is shown in this embodiment of the present application.
As shown in fig. 4, reading the data packet in the first buffer and marking an identifier, encapsulating the data packet and the corresponding communication information to obtain a communication data packet, and sending the communication data packet, including:
401. and reading the data packet in the first buffer, and identifying the data packet.
The identification processing is mainly used for distinguishing the data packets so as to facilitate subsequent packaging.
402. And distributing according to the identification information of the data packet, and encapsulating the data packet and the corresponding communication information to obtain the communication data packet.
403. And sending the communication data packet to a receiving end platform.
After the encapsulation is finished, the communication data packet is sent to the receiving end in an IP form, and the original data packet is processed, so that the communication data packet can quickly reach the corresponding receiving end, and the stability and reliability of communication are ensured.
Referring to fig. 5, an implementation manner of repeatedly reading the first buffer according to the number of receiving ends, generating and sending a communication data packet according to the embodiment of the present application is shown.
As shown in fig. 5, the repeatedly reading the first buffer according to the number of the receiving ends, and generating and sending the communication data packet includes:
501. and comparing the repeated reading parameters with the number of the receiving ends to judge whether to continue reading.
The number of receiving ends for the butt joint of the transmitting end can be 500-2000, wherein, in order to ensure the communication speed, the number of the receiving ends is preferably 1000.
502. If yes, reading the data packet in the first memory.
503. And repeating the writing and reading in the first buffer, the packaging of the data packet and the sending of the communication data packet.
Specifically, because the first buffer is provided with a plurality of spaces for buffering data packets, the writing and reading of the first buffer can be simultaneously carried out, and the communication speed of the first buffer is ensured. For example, the maximum number of buffer packets in the first buffer is 2, and in the buffer space, another data packet is written in the data packet stored in the first buffer in the process of reading out the data packet, so that continuous and repeated reading of the first buffer is realized.
And comparing the reading times M of the first buffer with the number N of the receiving ends to determine whether to continue reading, and specifically, repeating the steps 103-105 when M is less than N to complete the communication between the sending end and the plurality of receiving ends.
For better use experience, a specific embodiment of this embodiment is provided, specifically, the valid data packets are set to be parsed into 384 bytes, the first memory adopts DDR, and the number of packets that can be stored in the first memory is 256, that is, the maximum number of PNUM0 is 256. The first buffer is a RAM, which can store 2 packets, i.e. the PUNM1 is 2 at the maximum, and the system operating clock is 125M. The read-write clock of DDR is 100M. The number of the lower receiving ends butted by the upper sending end is 1000.
The preset speed of distributing a data packet to each subordinate receiving end is as follows: since the system operating clock is 125M with a period of 8ns, assuming that 1 byte of data is processed per clock cycle, 8ns 384 is required for the RAM to read one 384 byte without calculating the packet interval, which is 384 x 8ns 1000=3072000ns =3.072ms for 1000 reads. And due to the DDR and the intermediate processing delay, the delay of integrally reading one data packet is in the order of milliseconds, so that the time requirement of an emergency broadcasting system can be met.
The method has the specific advantages that the method for realizing the multipath concurrence of the emergency broadcast has universality and can be used in the situation of multipath concurrence of one path of data; meanwhile, the method is simple to implement, a large amount of cache is not needed, the implementation complexity and the resource occupancy rate can be effectively reduced, the transmission speed of the emergency broadcast is increased, the number of the upper-level transmitting terminals is reduced, and therefore the cost of the emergency broadcast is greatly saved.
Referring to fig. 6, a block diagram of an emergency broadcast multi-path concurrent communication device according to an embodiment of the present application is shown.
As shown in fig. 6, the embodiment further provides an emergency broadcast multi-path concurrent communication device, which is applied to and used in a communication system, comprising
The processor 601 is configured to receive information from a sending end, process data, and send an encapsulated communication data packet to a lower-level receiving end;
the first memory 602 is used for caching data and instructions of the sending end, so that subsequent calling is facilitated;
the first buffer 603 is used for buffering the data packet and realizing fast writing and reading of the data packet;
the encapsulating unit 604 is configured to encapsulate the data packet and the communication information of the receiving end.
Specifically, the processor directly calls the first memory and the encapsulation unit, and the calling relationship between the first buffer and the processor can realize interaction through the first memory. For example, the processor sends instructions and data to the first memory and sends communication information to the encapsulation module, and the first memory is not directly associated with the processor, but directly interfaces with the first memory through instructions of the first memory.
Wherein, the processor 601 is electrically connected to the first memory 602, the first register 603 and the packaging unit 604;
the processor 601 calls the first memory 602, the first buffer 603 and the encapsulation unit 604 to perform the following steps:
receiving data information sent by a sending end, processing the data information to obtain a data packet, and writing the data packet into a first memory 602;
acquiring communication information of a receiving end, and writing the communication information into a first memory 602;
reading the data packet in the first memory 602 and writing the data packet into the first buffer 603 according to the reading parameters of the first memory 602 and the first buffer 603;
reading the data packet in the first buffer 603, marking an identifier, encapsulating the data packet and corresponding communication information to obtain a communication data packet, and sending the communication data packet;
the first buffer 603 is repeatedly read according to the number of receiving ends, and generates and transmits a communication packet.
For the implementation of the above steps, reference may be made to multiple embodiments of the emergency broadcast multi-path concurrent communication method shown in fig. 1 to 5, which are not described herein again.
Referring to fig. 7, a block diagram of an emergency broadcast multi-path concurrent communication system according to an embodiment of the present application is shown.
As shown in fig. 7, an embodiment of the present application further provides an emergency broadcast multi-path concurrent communication system, including:
a sending terminal 701, which sends data and instructions to be broadcasted;
a receiving end 702 that receives data and instructions sent by an upper-level sending end 701; and
the communication device 600 in the above embodiment is configured to receive data sent by the sending end 701, process the data, and distribute the data to the lower receiving end 702.
In the emergency broadcast multi-path concurrent communication system, a sending terminal 701 rapidly processes data through a communication device 600 and distributes the data to a plurality of receiving terminals 702, thereby completing rapid communication of emergency broadcast.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. An emergency broadcast multi-path concurrent communication method is applied to a communication system, and the method comprises the following steps:
receiving data information sent by a sending end, processing the data information to obtain a data packet, and writing the data packet into a first memory;
acquiring communication information of a receiving end, and writing the communication information into a first memory;
reading the data packet in the first memory and writing the data packet into the first buffer according to the reading parameters of the first memory and the first buffer;
reading a data packet in the first buffer, marking an identifier, packaging the data packet and corresponding communication information to obtain a communication data packet and sending the communication data packet;
and repeatedly reading the first buffer according to the number of the receiving ends, and generating and sending the communication data packet.
2. The emergency broadcast multi-path concurrent communication method according to claim 1, wherein writing the data packet and the communication information into the first memory further comprises:
and writing the communication information in the first memory into the second buffer according to the reading parameters of the first memory and the second buffer.
3. The emergency broadcast multi-path concurrent communication method according to claim 1, wherein the receiving the data information sent by the sending end, processing the data information to obtain a data packet, and writing the data packet into the first memory comprises:
receiving data information sent by a sending end;
analyzing the data information to obtain effective information;
splitting the effective information to obtain a data packet with a fixed size;
the data packet is written to a first memory.
4. The emergency broadcast multi-path concurrent communication method according to claim 1, wherein the reading the data in the first memory and writing the data into the first buffer according to the read parameters of the first memory and the first buffer comprises:
judging whether to read data according to the reading parameters of the first memory and the first buffer;
if yes, reading the data packet in the first memory;
writing the data packet into a first buffer;
if not, carrying out re-judgment after a preset time interval.
5. The emergency broadcast multi-path concurrent communication method according to claim 1 or 2, wherein the reading and marking the data packet in the first buffer, and encapsulating the data packet and the corresponding communication information to obtain the communication data packet and sending the communication data packet comprises:
reading the data packet in the first buffer, and performing identification processing on the data packet;
distributing according to the identification information of the data packet, and encapsulating the data packet and the corresponding communication information to obtain a communication data packet;
and sending the communication data packet to a receiving end platform.
6. The emergency broadcast multi-path concurrent communication method according to claim 1, wherein the repeatedly reading the first buffer according to the number of the receiving ends and generating and transmitting the communication data packet comprises
Comparing the repeated reading parameters with the number of the receiving ends, and judging whether to continue reading;
if yes, reading the data packet in the first memory;
and repeating the writing and reading in the first buffer, the packaging of the data packet and the sending of the communication data packet.
7. The emergency broadcast multi-path concurrent communication device is applied to a communication system and comprises a processor, a first memory, a first buffer and an encapsulation unit, wherein the processor is electrically connected with the first memory, the first buffer and the encapsulation unit;
the processor calls the first memory, the first buffer and the encapsulation unit to perform the steps of:
receiving data information sent by a sending end, processing the data information to obtain a data packet, and writing the data packet into a first memory;
acquiring communication information of a receiving end, and writing the communication information into a first memory;
reading the data packet in the first memory and writing the data packet into the first buffer according to the reading parameters of the first memory and the first buffer;
reading a data packet in the first buffer, marking an identifier, packaging the data packet and corresponding communication information to obtain a communication data packet and sending the communication data packet;
and repeatedly reading the first buffer according to the number of the receiving ends, and generating and sending the communication data packet.
8. The emergency broadcast multi-path concurrent communication device according to claim 7, further comprising:
and the second buffer is used for writing and reading according to the instruction of the processor and is used for buffering the communication data of the receiving end.
9. The emergency broadcast multi-path concurrent communication device according to claim 7, wherein the first memory is DDR and the first buffer is RAM.
10. An emergency broadcast multi-path concurrent communication system, comprising:
the sending end sends data and instructions to be broadcasted;
the receiving end receives data and instructions sent by the superior sending end; and
the communication device according to any of claims 7-9, configured to receive data sent by a sending end, process the data, and distribute the data to a receiving end of a next level.
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| JP2006279529A (en) * | 2005-03-29 | 2006-10-12 | Toshiba Corp | Device and method for generating terrestrial digital teletext signal |
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Application publication date: 20200519 |