CN108540274A - A kind of data transmission method and device based on NB-iot - Google Patents
A kind of data transmission method and device based on NB-iot Download PDFInfo
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- CN108540274A CN108540274A CN201810070200.2A CN201810070200A CN108540274A CN 108540274 A CN108540274 A CN 108540274A CN 201810070200 A CN201810070200 A CN 201810070200A CN 108540274 A CN108540274 A CN 108540274A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/04—Error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of data transmission method and device based on NB iot.The method includes：In current transmission period, if detecting for the first time, transmission failure occurs for the data to be transmitted for being sent to the base stations NB iot, and the data to be transmitted is stored in memory；According to default re-transmission period, the data to be transmitted in memory is retransmitted.The present invention proposes a kind of data transmission method based on cellular narrowband Internet of Things NB iot, if equipment fails to the base stations NB iot transmission data, then the data first by transmission failure are stored in memory, data are retransmitted according still further to default re-transmission period, ensure that data transmission is not lost, the data that equipment is sent can be sent to the base stations NB iot until central server.
Description
Technical field
The present invention relates to narrowband Internet of Things field, more particularly, to a kind of data transmission method based on NB-iot and
Device.
Background technology
It is mutual to become all things on earth based on cellular narrowband Internet of Things (Narrow Band Internet of Things, NB-IoT)
One important branch of networking network.NB-IoT is implemented in cellular network, only consumes the bandwidth of about 180KHz, can be deployed directly into
GSM network, UMTS network or LTE network, to reduce lower deployment cost, realize smooth upgrade.NB-IoT is that one, the fields IoT are emerging
Technology, support low power consuming devices to be connected in the cellular data of wide area network, also referred to as low-power consumption wide area network (LPWAN).NB-
IoT supports stand-by time length, the efficient connection to network connectivity requirements higher device.
Currently, combustible gas monitor is the wireless monitoring device for urban underground space, traditional wireless transmission skill
For art since penetrability is limited, the signal in underground is difficult guaranteed, so emerging one after another the case where loss of data.It is used at present
The Radio Transmission Technology of NB-iot can substantially solve the data loss problem of combustible gas monitor, however signal problem is also
It is that will appear once in a while.If server is not online in transmission process in addition, then the loss of data is also resulted in.And NB-iot
Base station can only allow the connection transmission of 12 equipment simultaneously, if it is greater than 12 pipeline equipments, even if NB-iot network signal intensities are very
It is good, it also will appear the problem of equipment does not connect base station.
Invention content
The present invention provides a kind of number based on NB-iot for overcoming the above problem or solving the above problems at least partly
According to transmission method and device.
According to an aspect of the present invention, a kind of transmission side data based on cellular narrowband Internet of Things NB-iot is provided
Method, including：
In current transmission period, if detecting for the first time, the data to be transmitted for being sent to the base stations NB-iot occurs transmission and loses
It loses, then the data to be transmitted is stored in memory；
According to default re-transmission period, the data to be transmitted in memory is retransmitted.
Further, the method further includes：
Fail if to the data to be transmitted in memory retransmit in current transmission period, it will be described
Data to be transmitted and the data to be transmitted of next transmission cycle are sent to the base stations NB-iot simultaneously.
Further, the method further includes：
According to preset period of time or preset data amount threshold value, the historical data in the memory is exported, it is described to go through
History data are that the data to be transmitted of failure is transmitted in the historic transmission period.
Further, described in current transmission period, if detecting the data to be transmitted for being sent to the base stations NB-iot for the first time
Transmission failure occurs, then the data to be transmitted is stored in memory, specifically included：
If detecting the failure of the base stations access NB-iot, the data to be transmitted is stored in memory；Or
The data to be transmitted is sent to the base stations NB-iot, if in preset duration, corresponding feedback signal is not detected,
The data to be transmitted is then stored in memory.
Further, described that the data to be transmitted in memory is retransmitted according to default re-transmission period, it is specific to wrap
It includes：
If accessing the base stations the NB-iot failure, after the base stations NB-iot success described in reconnection, obtain in the memory
The data to be transmitted, and send the data to be transmitted to the base stations NB-iot；Or
If in preset duration, corresponding feedback signal is not detected, according to the default re-transmission period, described in acquisition
The data to be transmitted in memory, and send the data to be transmitted to the base stations NB-iot.
Further, described according to default re-transmission period, the data to be transmitted in memory is retransmitted, is also wrapped
It includes：
In current transmission period, if retransmitting failure, n times re-transmissions are at most carried out, wherein N is positive integer, and N<5.
Specifically, the transmission failure, specifically includes：The failure of the base stations access NB-iot, the base stations NB-iot are sent to center
Server failure, central server do not transmit and receive the feedback signal of data correctly and do not receive the anti-of central server transmission
Feedback signal.
According to another aspect of the present invention, a kind of data transmission based on cellular narrowband Internet of Things NB-iot is also provided
Device, including：
Memory module is used in current transmission period, if detecting the number to be transmitted for being sent to the base stations NB-iot for the first time
According to transmission failure occurs, then the data to be transmitted is stored in memory；
Retransmission module, for according to default re-transmission period, being retransmitted to the data to be transmitted in memory.
According to another aspect of the present invention, the pre- measurement equipment of index quantification of wireless network covering is also provided, including：
At least one processor；And
At least one processor being connect with the processor communication, wherein：
The memory is stored with the program instruction that can be executed by the processor, and the processor calls described program to refer to
It enables and is able to carry out that the present invention is based on the data transmission method of cellular narrowband Internet of Things NB-iot and its any alternative embodiments
Method.
According to another aspect of the present invention, a kind of non-transient computer readable storage medium is provided, which is characterized in that institute
Non-transient computer readable storage medium storage computer instruction is stated, the computer instruction makes the computer execute the present invention
The method of data transmission method and its any alternative embodiment based on cellular narrowband Internet of Things NB-iot.
The present invention proposes a kind of data transmission method based on cellular narrowband Internet of Things NB-iot, if equipment is to NB-iot
Base station transmission data failure then first carries out data the data deposit memory of transmission failure according still further to default re-transmission period
It retransmits, it is ensured that data transmission is not lost, and the data that equipment is sent can be sent to the base stations NB-iot until central server.
Description of the drawings
Fig. 1 is data transmission network schematic diagram of the embodiment of the present invention based on NB-iot；
Fig. 2 is a kind of data transmission method flow diagram based on NB-iot of the embodiment of the present invention；
Fig. 3 is the block schematic illustration of a kind of electronic equipment of the embodiment of the present invention.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
Fig. 1 is data transmission network schematic diagram of the embodiment of the present invention based on NB-iot, referring to FIG. 1, described be based on NB-
The data transmission network of iot includes at least one electronic equipment, memory, the base stations NB-iot and central server.One NB-
The base stations iot can only connect No. 12 electronic equipments simultaneously, if the electronic equipment is more than 12, extra electronic equipment will be unable to
It is connected into the base stations NB-iot.The successful complete procedure of signal transmission is：Electronic equipment sends data to the base stations NB-iot, NB-iot bases
Station forwards the data to center to server, and central server receives to be passed a feedback signal back after data and give NB-iot bases again
It stands, feedback signal is sent to electronic equipment by the base stations NB-iot again.
Fig. 2 is a kind of data transmission method flow diagram based on NB-iot of the embodiment of the present invention, as shown in Figure 2 one
Data transmission method of the kind based on cellular narrowband Internet of Things NB-iot, including：
S100, in current transmission period, if detecting for the first time, the data to be transmitted for being sent to the base stations NB-iot passes
The data to be transmitted is then stored in memory by defeated failure；
The executive agent of the embodiment of the present invention is the electronic equipment communicated based on NB-iot networks, including fuel gas
Monitor etc..If electronic equipment detects transmission failure for the first time after sending transfer device to be passed, data to be transmitted is deposited
Reservoir.Still fail if continuing after execution after step is retransmitted, memory need not be stored in again.
S200 retransmits the data to be transmitted in memory according to default re-transmission period.
The embodiment of the present invention is detecting data biography to solve the problems, such as that existing jitter leads to loss of data
After defeated failure, the data to be transmitted to being stored in memory retransmits；It so retransmits and needs according to certain re-transmission period.One
In a transmission cycle, the data of transmission failure are retransmitted according to default re-transmission period.Specifically, default re-transmission period can be with
It is arranged according to actual demand, it is not limited in the embodiment of the present invention.
The embodiment of the present invention propose the data transmission method based on cellular narrowband Internet of Things NB-iot, if equipment to
The base stations NB-iot transmission data failure, then first by the data deposit memory of transmission failure, according still further to default re-transmission period logarithm
According to being retransmitted, it is ensured that data transmission is not lost, and the data that equipment is sent can be sent to the base stations NB-iot until center
Server.
In an alternative embodiment, the method further includes：
S300 fails if to the data to be transmitted in memory retransmit in current transmission period,
The data to be transmitted of the data to be transmitted and next transmission cycle is sent to the base stations NB-iot simultaneously.
Specifically, the data of equipment transmission in need in each transmission cycle, lose when being transmitted in a transmission cycle
The data lost still do not succeed by retransmitting, and next transmission cycle has arrived, then by the data of transmission failure under
One transmission cycle needs the data transmitted while sending.That is, in each transmission cycle, equipment is in addition to sending current transmission
Data to be transmitted in period can also send the data of transmission failure in a transmission week simultaneously.
The embodiment of the present invention passes through the mechanism, it is ensured that transmitting the data of failure can have attempted to transmit, until success
It is sent to the base stations NB-iot and central server, and receives correct feedback signal.
In an alternative embodiment, the method further includes：
S400 exports the historical data in the memory, institute according to preset period of time or preset data amount threshold value
It is that the data to be transmitted of failure is transmitted in the historic transmission period to state historical data.
Specifically, can be exported the historical data in memory according to preset period of time, such as with one day for the period
Or a week is to be exported in period etc.；Or the historical data in memory can be led according to preset data amount threshold value
Go out, for example when the data volume in memory reaches certain amount of storage, is exported.Because the capacity of memory is limited,
It is exported in due course, the memory capacity of memory can be reduced in due course, ensure that memory can long-term normal use.
Specifically, preset period of time or preset data amount threshold value can depending on actual demand and memory capacity,
It is not limited in the embodiment of the present invention.
The embodiment of the present invention devises a set of transmission mechanism based on NB-iot, and the data that will be unable to once smoothly transmit are deposited
Storage is got off, and retransmit and is reissued；Historical data can also be exported simultaneously, the historical data includes correctly sending
Reason can analyze the reason of transmission fails, to be improved by derived historical data.
In an alternative embodiment, step S100, it is described in current transmission period, it is sent to if detecting for the first time
Transmission failure occurs for the data to be transmitted of the base stations NB-iot, then the data to be transmitted is stored in memory, specifically included：
If detecting the failure of the base stations access NB-iot, the data to be transmitted is stored in memory；Or
The data to be transmitted is sent to the base stations NB-iot, if in preset duration, corresponding feedback signal is not detected,
The data to be transmitted is then stored in memory.
Transmission failure includes mainly two major classes in the embodiment of the present invention, and one kind, which is equipment, can not access the base stations NB-iot and lead
Cause transmission failure；Another kind of to be equipment can access the base stations NB-iot, and equipment also sends data, but in data transmission procedure
Failure has occurred, leads to data transmission fails as long as having in the entire circuit of transmission and there is a problem at one.Specifically, described
Transmission failure, specifically includes：The failure of the base stations access NB-iot, the base stations NB-iot are sent to central server failure, center service
Device does not transmit and receive the feedback signal of data correctly and equipment does not receive the feedback signal etc. that central server is sent.
Fail to determine whether transmitting specifically, equipment is the feedback signal by checking central server.
If specifically, receiving the feedback signal of central server in preset duration, data transmission success is confirmed；If
It is not received by the feedback signal of central server in preset duration, then confirms data transmission fails.
Specifically, preset duration is the time-out time of equipment detection feedback signal, it can be specific according to message transmission rate etc.
Depending on factor, the embodiment of the present invention is not construed as limiting this.
Based on above-described embodiment, step S200 is described according to default re-transmission period, to the number to be transmitted in memory
According to being retransmitted, specifically include：
If accessing the base stations the NB-iot failure, after the base stations NB-iot success described in reconnection, obtain in the memory
The data to be transmitted, and send the data to be transmitted to the base stations NB-iot；Or
If in preset duration, corresponding feedback signal is not detected, according to the default re-transmission period, described in acquisition
The data to be transmitted in memory, and send the data to be transmitted to the base stations NB-iot.
The embodiment of the present invention is retransmitted for two class situations of transmission failure, if equipment accesses the base stations NB-iot
Failure then carries out the connection of equipment and the base stations NB-iot, is retransmitted after successful connection first, and the data of re-transmission come to be passed for the first time
Data to be transmitted stored in memory after defeated failure；If the failure in transmission process, then according to the default re-transmission week
Phase carries out repeating transmission, until success or retransmit after current transmission period and still fail, the data of re-transmission are confessed one's crime
Data to be transmitted stored in memory after secondary transmission failure.
Based on above-described embodiment, step S200 is described according to default re-transmission period, to the number to be transmitted in memory
According to being retransmitted, further include：
In current transmission period, if retransmitting failure, n times re-transmissions are at most carried out, wherein N is positive integer, and N<5.
The embodiment of the present invention provides a kind of multiple retransmission mechanism, in a transmission cycle, if primary retransmit failure,
Second is carried out to retransmit；If second retransmits, third time re-transmission is carried out；If third time retransmits, the 4th re-transmission is carried out；If
4th re-transmission, then carry out the 5th re-transmission etc..
Preferably, the embodiment of the present invention at most carries out 4 re-transmissions in single transmission cycle；If 4 re-transmissions are unsuccessful
Then sent simultaneously with the data of next transmission cycle.
In conclusion an embodiment of the present invention provides the data transmission method based on NB-iot in one, will be unable to primary suitable
The data of profit transmission store, and retransmit and reissue；Transmission failure can be analyzed by the historical data of storage simultaneously
Reason has good advantageous effect to be improved.
The present invention also provides a kind of data transmission devices based on cellular narrowband Internet of Things NB-iot, including：
Memory module is used in current transmission period, if detecting the number to be transmitted for being sent to the base stations NB-iot for the first time
According to transmission failure occurs, then the data to be transmitted is stored in memory；
Retransmission module, for according to default re-transmission period, being retransmitted to the data to be transmitted in memory.
In an alternative embodiment, described device further includes while sending module, described while sending module are used for：
Fail if to the data to be transmitted in memory retransmit in current transmission period, it will be described
Data to be transmitted and the data to be transmitted of next transmission cycle are sent to the base stations NB-iot simultaneously.
In an alternative embodiment, described device further includes historical data export module, the historical data export
Module is used for：
According to preset period of time or preset data amount threshold value, the historical data in the memory is exported, it is described to go through
History data are that the data to be transmitted of failure is transmitted in the historic transmission period.
The device of the embodiment of the present invention can be used for executing the number shown in Fig. 2 based on cellular narrowband Internet of Things NB-iot
According to the technical solution of transmission method embodiment, implementing principle and technical effect are similar, and details are not described herein again.
Fig. 3 shows the block schematic illustration of electronic equipment of the embodiment of the present invention.
Reference Fig. 3, the equipment, including：Processor (processor) 601, memory (memory) 602 and bus
603；Wherein, the processor 601 and memory 602 complete mutual communication by the bus 603；
The processor 601 is used to call the program instruction in the memory 602, to execute above-mentioned each method embodiment
The method provided, such as including：In current transmission period, if detecting the number to be transmitted for being sent to the base stations NB-iot for the first time
According to transmission failure occurs, then the data to be transmitted is stored in memory；According to default re-transmission period, described in memory
Data to be transmitted is retransmitted.
Another embodiment of the present invention discloses a kind of computer program product, and the computer program product is non-including being stored in
Computer program in transitory computer readable storage medium, the computer program include program instruction, when described program refers to
When order is computer-executed, computer is able to carry out the method that above-mentioned each method embodiment is provided, such as including：Working as forward pass
In the defeated period, if detecting for the first time, transmission failure occurs for the data to be transmitted for being sent to the base stations NB-iot, will be described to be transmitted
Data are stored in memory；According to default re-transmission period, the data to be transmitted in memory is retransmitted.
Another embodiment of the present invention provides a kind of non-transient computer readable storage medium, and the non-transient computer is readable
Storage medium stores computer instruction, and the computer instruction makes the computer execute what above-mentioned each method embodiment was provided
Method, such as including：In current transmission period, if detecting for the first time, the data to be transmitted for being sent to the base stations NB-iot passes
The data to be transmitted is then stored in memory by defeated failure；According to default re-transmission period, to the number to be transmitted in memory
According to being retransmitted.
One of ordinary skill in the art will appreciate that：Realize that above equipment embodiment or embodiment of the method are only schematic
, wherein can be that physically separate component may not be physically separated for the processor and the memory, i.e.,
A place can be located at, or may be distributed over multiple network units.It can select according to the actual needs therein
Some or all of module achieves the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creative labor
In the case of dynamic, you can to understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It is realized by the mode of software plus required general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be expressed in the form of software products in other words, should
Computer software product can store in a computer-readable storage medium, such as ROM/RAM, magnetic disc, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of data transmission method based on cellular narrowband Internet of Things NB-iot, which is characterized in that including：
In current transmission period, if detecting for the first time, transmission failure occurs for the data to be transmitted for being sent to the base stations NB-iot,
The data to be transmitted is stored in memory；
According to default re-transmission period, the data to be transmitted in memory is retransmitted.
2. according to the method described in claim 1, it is characterized in that, the method further includes：
Fail if to the data to be transmitted in memory retransmit in current transmission period, it will be described to be passed
The data to be transmitted of transmission of data and next transmission cycle is sent to the base stations NB-iot simultaneously.
3. method according to claim 1 or 2, which is characterized in that the method further includes：
According to preset period of time or preset data amount threshold value, the historical data in the memory is exported, the history number
According to transmit the data to be transmitted of failure in the historic transmission period.
4. according to the method described in claim 1, it is characterized in that, described in current transmission period, if detecting hair for the first time
It send the data to be transmitted to the base stations NB-iot that transmission failure occurs, then the data to be transmitted is stored in memory, specifically included：
If detecting the failure of the base stations access NB-iot, the data to be transmitted is stored in memory；Or
The data to be transmitted is sent to the base stations NB-iot, it, will if in preset duration, corresponding feedback signal is not detected
The data to be transmitted is stored in memory.
5. according to the method described in claim 4, it is characterized in that, described according to default re-transmission period, to the institute in memory
It states data to be transmitted to be retransmitted, specifically include：
If accessing the base stations the NB-iot failure, after the base stations NB-iot success described in reconnection, the institute in the memory is obtained
Data to be transmitted is stated, and the data to be transmitted is sent to the base stations NB-iot；Or
If in preset duration, corresponding feedback signal is not detected, according to the default re-transmission period, the storage is obtained
The data to be transmitted in device, and send the data to be transmitted to the base stations NB-iot.
6. according to the method described in claim 5, it is characterized in that, described according to default re-transmission period, to the institute in memory
It states data to be transmitted to be retransmitted, further includes：
In current transmission period, if retransmitting failure, n times re-transmissions are at most carried out, wherein N is positive integer, and N<5.
7. according to the method described in claim 1, it is characterized in that, transmission failure, specifically includes：Access the base stations NB-iot
Failure, the base stations NB-iot be sent to central server failure, central server correctly transmit and receive data feedback signal with
And the feedback signal of central server transmission is not received.
8. a kind of data transmission device based on cellular narrowband Internet of Things NB-iot, which is characterized in that including：
Memory module, in current transmission period, the data to be transmitted for being sent to the base stations NB-iot to be sent out if detecting for the first time
Raw transmission failure, then be stored in memory by the data to be transmitted；
Retransmission module, for according to default re-transmission period, being retransmitted to the data to be transmitted in memory.
9. a kind of electronic equipment, which is characterized in that including：
At least one processor；And
At least one processor being connect with the processor communication, wherein：
The memory is stored with the program instruction that can be executed by the processor, and the processor calls described program to instruct energy
Enough methods executed as described in claim 1 to 7 is any.
10. a kind of non-transient computer readable storage medium, which is characterized in that the non-transient computer readable storage medium is deposited
Computer instruction is stored up, the computer instruction makes the computer execute the method as described in claim 1 to 7 is any.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109347989A (en) * | 2018-12-11 | 2019-02-15 | 武汉盛帆电子股份有限公司 | Meter design method, apparatus and system design method based on NB-IoT Internet of Things |
| CN110336648A (en) * | 2019-08-15 | 2019-10-15 | 江苏萌发物联网科技有限公司 | A kind of Data Handling Equipment And Method based on NB-IOT |
| CN114375019A (en) * | 2022-01-18 | 2022-04-19 | 北京智联安科技有限公司 | NB-IoT mobile state data retransmission method and system |
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| CN102571451A (en) * | 2012-02-16 | 2012-07-11 | 大唐移动通信设备有限公司 | Network element and method for uploading MR (Measure Report) messages by network element |
| US9356737B2 (en) * | 2014-03-26 | 2016-05-31 | Keysight Technologies, Inc. | Retry buffer and method of performing retry operation using retry buffer |
| CN107612661A (en) * | 2017-09-07 | 2018-01-19 | 四川九洲北斗导航与位置服务有限公司 | Data communication method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109347989A (en) * | 2018-12-11 | 2019-02-15 | 武汉盛帆电子股份有限公司 | Meter design method, apparatus and system design method based on NB-IoT Internet of Things |
| CN109347989B (en) * | 2018-12-11 | 2021-08-13 | 武汉盛帆电子股份有限公司 | Meter design method, device and system design method based on NB-IoT (network B-IoT) Internet of things |
| CN110336648A (en) * | 2019-08-15 | 2019-10-15 | 江苏萌发物联网科技有限公司 | A kind of Data Handling Equipment And Method based on NB-IOT |
| CN114375019A (en) * | 2022-01-18 | 2022-04-19 | 北京智联安科技有限公司 | NB-IoT mobile state data retransmission method and system |
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