CN101997580B - Information receiving and transmitting mode for avoiding wireless transmission storm - Google Patents
Information receiving and transmitting mode for avoiding wireless transmission storm Download PDFInfo
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- CN101997580B CN101997580B CN2010105586618A CN201010558661A CN101997580B CN 101997580 B CN101997580 B CN 101997580B CN 2010105586618 A CN2010105586618 A CN 2010105586618A CN 201010558661 A CN201010558661 A CN 201010558661A CN 101997580 B CN101997580 B CN 101997580B
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Abstract
The invention discloses an information receiving and transmitting mode for avoiding wireless transmission storm, which is used in a field of wireless communication. In the mode, information on a code bit label and a round bit label is added in a signal transmitted by the main controller; when feeding a signal back to the main controller, wireless receiving and transmitting equipment calculates return information transmission delay time according to a calculation rule formed by the information on the code bit label and round bit label in the received signal, so it is ensured that only one set of wireless receiving and transmitting equipment returns information at one moment; and the return information carries a time label for informing the main controller of the generation time of the return information of each wireless receiving and transmitting information. The method of the invention solves the problems of data stack and loss and the like caused by a rush of a large volume of return information to a receiving terminal in a short time period, which is likely to happen when one main controller communicates with a plurality of sets of wireless receiving and transmitting equipment at the same time.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of information transmit-receive mode of avoiding the wireless transmission storm.
Background technology
Control many wireless transmitting-receiving equipments by a main controller and carry out the common technique that work is wireless communication field, exist a problem can cause the problems such as data stacking, loss when the wireless transmitting-receiving equipments while when main controller sends information exactly in this technology, such as, in modernization interactive teaching process, teacher uses interactive education system to give lessons online, set a question online, the student uses the online answer of wireless device for answering question, completes interactive teaching.For improving the enthusiasm of Students ' Learning, in the interactive teaching process, the teacher often tends to out some and robs answer, enlivens classroom atmosphere on the one hand, can check on the other hand the student to the grasp situation of knowledge point.At this moment, as each class, 80 device for answering questions are arranged, or more (consider in the future extensive use), teacher's beginning answer of issuing an order is not got rid of and Most students occurred and almost press simultaneously the situation that device for answering question is raced to be the first to answer a question, or races to be the first to answer a question simultaneously.Consider Wi-Fi transmission and the many-sided factor of electronic element, have a large amount of information of racing to be the first to answer a question to pour into simultaneously receiving terminal (main controller) within the very short time period, very possible many information take a communication link simultaneously, cause information to stop up.And communication link can only send an information in a time point, and so probably some information has just been lost.Even continue to repeat, the time has just lagged behind so, does not reach the purpose of racing to be the first to answer a question.
Summary of the invention
The object of the present invention is to provide a kind of avoiding to send simultaneously the information transmit-receive mode of the problems such as the networking communication that wireless information transfer storm that return information causes causes has some setbacks, return information loss to main controller at a plurality of wireless transmitting-receiving equipments, information transmit-receive mode of the present invention can also further solve prior art can't correctly record the problem of return information time.
To achieve these goals, the technical solution used in the present invention is as follows:
The information transmit-receive mode of avoiding the wireless transmission storm of the present invention comprises the following steps:
With the wireless transmitting-receiving equipments number consecutively;
Main controller sends information with a numbering position label, round position label with certain transmission frequency to each wireless transmitting-receiving equipments, the value X of described numbering position label is from 1 to numerical value K, wherein numerical value K is the quantity of wireless transmitting-receiving equipments corresponding to main controller, the value Y of described round position label is from 1 to numerical value L, wherein L determines according to transmission frequency and the numerical value K of main controller, and three's relation is numerical value L* numerical value K=transmission frequency; When described main controller sends article one information, the value of numbering position label and round position label is 1, every information value of numbering a label adds 1 afterwards, the value of round position label is constant, until the value of a numbering label is numerical value K, at this moment, described main controller is numbered the position label again since 1 when sending next information, and the numerical value of round position label adds 1, by that analogy, until the value of round position label is numerical value L, when the value of numbering position label was numerical value K simultaneously, zero clearing was waited for and being restarted;
Described wireless transmitting-receiving equipments generates a return information;
Described wireless transmitting-receiving equipments is after receiving the signal that main controller sends, calculate answer time of delay according to the value of the numbering position label of the signal of receiving, round position label and the computation rule of inserting in advance, described computation rule need to satisfy each and constantly only have a wireless transmitting-receiving equipments sending return information; If described wireless transmitting-receiving equipments is received the signal that a more than main controller sends, distinguish the computing relay time, and be arranged in order according to the length of time of delay;
Described wireless transmitting-receiving equipments sends described return information to described main controller when arrive in first time of delay;
After described main controller receives the return information of wireless transmitting-receiving equipments transmission, send confirmation to wireless transmitting-receiving equipments,
If wireless transmitting-receiving equipments is not received confirmation after sending return information, again send return information after reaching next time of delay, until after receiving described confirmation, then receive no longer reaction after the information that main controller sends.
Preferably, when the return information of described wireless transmitting-receiving equipments generates according to user instruction, add a time tag after this return information, the rise time of this time tag recording user instruction, described main controller obtains the rise time of this wireless transmitting-receiving equipments return information according to its time tag that carries after receiving described return information.
Preferably, described computation rule is as follows:
When the value X of numbering position label numbers greater than wireless transmitting-receiving equipments, according to the following formula computing relay time:
{ (Y-1) * K+ (X-wireless transmitting-receiving equipments numbering) } * transmission lag unit
When the value X of numbering position label numbers less than wireless transmitting-receiving equipments, according to the following formula computing relay time:
{ (Y-1) * K+ (K+X-wireless transmitting-receiving equipments numbering) } * transmission lag unit
Preferably, described computation rule is as follows:
{ Y*K+ (X-wireless transmitting-receiving equipments numbering) } * transmission lag unit
Preferred, the tranmitting frequency of described main controller is 2KHz, and described transmission lag unit is 3.125us.
Preferably, described wireless transmitting-receiving equipments is device for answering question.
Beneficial effect of the present invention is as follows:
the information transmit-receive mode of avoiding the wireless transmission storm of the present invention, by adding a numbering label in the signal that sends at main controller, the information of round position label, wireless transmitting-receiving equipments is numbered a position label in the basis signal that receives when answer, the return information transmission lag time that the computation rule that round position label and self numbering form calculates the machine, thereby be difficult to ensure that the card synchronization only has a wireless transmitting-receiving equipments return information, simultaneously by making main controller know the return information time of each wireless transmitting-receiving equipments at the mid-angle of incidence label of return information, this model application is when online answer, guarantee that all device for answering question data can be received by main controller on the one hand, can not cause loss of data, on the other hand, the time tag that carries according to information, the judgement answer successively, accuracy is high.
Description of drawings
Fig. 1 is the system construction drawing that a specific embodiment of the present invention is used;
Fig. 2 is the information frame structural scheme of mechanism of middle formation embodiment illustrated in fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is further set forth.
Referring to accompanying drawing 1, be a specific embodiment that is applied in the interactive teaching process of the present invention, in this embodiment, allot a main controller, 80 device for answering questions for each classroom, and be numbered respectively 1～80 to device for answering question, during application, main controller with very fast speed to the device for answering question transmitted signal, transmission frequency is that 2KHz namely sends 2000 times a second, and the signal of transmission comprises all signals such as handshake and answer signal, and the stage that the type of signal is carried out according to the answer activity is determined.The send mode of signal is that every bars information comprises a numbering position label, is numbered from 1～80, and simultaneously, every information comprises a round position label, is 1～25, and the information frame structure is referring to accompanying drawing 2.
begin upper class hour, main controller sends handshake or answer signal in the manner described above to each device for answering question, due to radio communication and communication distance, signal is strong and weak, the factors such as electronic devices and components are relevant, device for answering question receives that the signal that main controller sends has successively, may receive the information of different numberings, receive that as No. 1 device for answering question round is 1, the numbering position is 2 information, device for answering question 2 receive for round be 1, be numbered 1 information, device for answering question 3 receive for round be 2, be numbered 1 information, device for answering question 5 receive for round be 1, be numbered 2 information, etc., and a device for answering question may successively be received different numberings, the information of different rounds, add round position label in method of the present invention in every information that main controller sends, and be also in order to guarantee that each device for answering question can receive signal by the purpose that round repeats to send.
The signal process of transmitting of the below during take answer in school describes as example.
Be a teacher when announcing the beginning answer, the instruction main controller sends the answer signal, after device for answering question is received the answer signal, the student presses the device for answering question answer in own hand, device for answering question is according to referring to that student's instruction generates answering information, and add a time tag, the rise time of this time tag recording user instruction after this information; After each device for answering question receives that answer signal that main controller sends generates inverse signal, for example receive when being numbered 10 signal when each device for answering question the return information time of delay of calculating the machine, according to the machine time of delay of following rule calculating:
When the value X of numbering position label numbers greater than device for answering question, according to the following formula computing relay time:
{ (Y-1) * K+ (X-device for answering question numbering) } * transmission lag unit
When the value X of numbering position label numbers less than device for answering question, according to the following formula computing relay time:
{ (Y-1) * K+ (K+X-device for answering question numbering) } * transmission lag unit
concrete outcome is referring to table 1, wherein (X-device for answering question numbering) or (K+X-device for answering question numbering) is known as transmitting time coefficient rule, its value is called the transmitting time coefficient, the time sequencing that the device for answering question that this transmitting time coefficient has directly reacted different sends at the return information of receiving same information, be 1 such as be numbered 1 device for answering question in transmission table 1 receiving round, when being numbered 10 signal, its transmitting time coefficient is 9, show that it is coming the 9th transmission time information, it is 9*3.125us with respect to the time of delay that receives first transmission return information device for answering question of this information.
Table 1
In each round, the moment of each device for answering question inverse signal is different as can be seen from Table 1, has avoided the situation of the dropout that transmission simultaneously can bring.
After main controller receives the answering information of device for answering question, according to the sequencing of the time tag that carries in information judgement answer, if race to be the first to answer a question, once as whose first foundation after whom, and be shown to the teacher that attends class.
Device for answering question receives the computation rule that calculates transmission lag after the signal of main controller can also be as follows:
{ (Y-1) * K+ (K+X-device for answering question numbering) } * transmission lag unit
Concrete result of calculation is referring to table 2.
Table 2
A problem is arranged as can be seen from Table 2 here, be exactly each take turns time of inverse signal all can be than late 10*3.125us of the time of transmitted signal, but also can find out in each round, the moment of each device for answering question inverse signal is also different, can avoid sending simultaneously equally the situation of the dropout that can bring.
Claims (6)
1. information transmit-receive mode of avoiding the wireless transmission storm is characterized in that: comprise the following steps:
With the wireless transmitting-receiving equipments number consecutively;
Main controller sends information with a numbering position label, round position label with certain transmission frequency to each wireless transmitting-receiving equipments, the value X of described numbering position label is from 1 to numerical value K, wherein numerical value K is the quantity of wireless transmitting-receiving equipments corresponding to main controller, the value Y of described round position label is from 1 to numerical value L, wherein L determines according to transmission frequency and the numerical value K of main controller, and three's relation is numerical value L* numerical value K=transmission frequency; When described main controller sends article one information, the value of numbering position label and round position label is 1, every information value of numbering a label adds 1 afterwards, the value of round position label is constant, until the value of a numbering label is numerical value K, at this moment, described main controller is numbered the position label again since 1 when sending next information, and the numerical value of round position label adds 1, by that analogy, until the value of round position label is numerical value L, when the value of numbering position label was numerical value K simultaneously, zero clearing was waited for and being restarted;
Described wireless transmitting-receiving equipments generates a return information;
Described wireless transmitting-receiving equipments is after receiving the signal that main controller sends, calculate answer time of delay according to the value of the numbering position label of the signal of receiving, round position label and the computation rule of inserting in advance, described computation rule need to satisfy each and constantly only have a wireless transmitting-receiving equipments sending return information; If described wireless transmitting-receiving equipments is received the signal that a more than main controller sends, distinguish the computing relay time, and be arranged in order according to the length of time of delay;
Described wireless transmitting-receiving equipments sends described return information to described main controller when arrive in first time of delay;
After described main controller receives the return information of wireless transmitting-receiving equipments transmission, send confirmation to wireless transmitting-receiving equipments, if wireless transmitting-receiving equipments is not received confirmation after sending return information, again send return information after reaching next time of delay, until after receiving described confirmation, then receive no longer reaction after the information that main controller sends.
2. information transmit-receive mode according to claim 1, it is characterized in that: when the return information of described wireless transmitting-receiving equipments generates according to user instruction, add a time tag after this return information, the rise time of this time tag recording user instruction, described main controller obtains the rise time of this wireless transmitting-receiving equipments return information according to its time tag that carries after receiving described return information.
3. information transmit-receive mode according to claim 1, it is characterized in that: described computation rule is as follows:
When the value X of numbering position label numbers greater than wireless transmitting-receiving equipments, according to the following formula computing relay time:
{ (Y-1) * K+ (X-wireless transmitting-receiving equipments numbering) } * transmission lag unit
When the value X of numbering position label numbers less than wireless transmitting-receiving equipments, according to the following formula computing relay time:
{ (Y-1) * K+ (K+X-wireless transmitting-receiving equipments numbering) } * transmission lag unit.
4. information transmit-receive mode according to claim 1, it is characterized in that: described computation rule is as follows:
{ Y*K+ (X-wireless transmitting-receiving equipments numbering) } * transmission lag unit.
5. according to claim 3 or 4 described information transmit-receive modes, it is characterized in that: the tranmitting frequency of described main controller is 2KHz, described transmission lag unit is 3.125us.
According to claim 1 to 4 arbitrary described information transmit-receive mode, it is characterized in that: described wireless transmitting-receiving equipments is device for answering question.
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| CN2010105586618A CN101997580B (en) | 2010-11-25 | 2010-11-25 | Information receiving and transmitting mode for avoiding wireless transmission storm |
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| CN2010105586618A CN101997580B (en) | 2010-11-25 | 2010-11-25 | Information receiving and transmitting mode for avoiding wireless transmission storm |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105118198B (en) * | 2015-09-02 | 2018-09-25 | 广州视睿电子科技有限公司 | Realize method, apparatus, server and the system raced to be the first to answer a question |
| CN109743402B (en) * | 2019-01-31 | 2020-07-07 | 深圳云合科技有限公司 | Processing method, transmission method, receiver and answering machine of answering information |
| CN111311857A (en) * | 2020-01-17 | 2020-06-19 | 重庆工业职业技术学院 | Computer multimedia competition answering device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1770223A (en) * | 2004-11-04 | 2006-05-10 | 王跃军 | Monitoring system |
| CN201522789U (en) * | 2009-10-22 | 2010-07-07 | 大连联达科技有限公司 | Interactive answer system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001016335A (en) * | 1999-06-28 | 2001-01-19 | Forval Corp | Communication prize system and terminal device thereof, and communication market research system and terminal device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1770223A (en) * | 2004-11-04 | 2006-05-10 | 王跃军 | Monitoring system |
| CN201522789U (en) * | 2009-10-22 | 2010-07-07 | 大连联达科技有限公司 | Interactive answer system |
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| JP特开2001-16335A 2001.01.19 |
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