CN105307282A - Method and device for preventing access collision of multiple user terminals - Google Patents
Method and device for preventing access collision of multiple user terminals Download PDFInfo
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- CN105307282A CN105307282A CN201510439354.0A CN201510439354A CN105307282A CN 105307282 A CN105307282 A CN 105307282A CN 201510439354 A CN201510439354 A CN 201510439354A CN 105307282 A CN105307282 A CN 105307282A
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- 230000005540 biological transmission Effects 0.000 claims description 26
- 230000004044 response Effects 0.000 claims description 17
- 238000003780 insertion Methods 0.000 claims description 8
- 230000037431 insertion Effects 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000002779 inactivation Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
- H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
- H04W74/0875—Non-scheduled access, e.g. ALOHA using a dedicated channel for access with assigned priorities based access
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Abstract
The invention discloses a method and device for preventing access collision of multiple user terminals. The method comprises the following steps: a specific user ID is allocated for each user terminal working in a time division mode in advance; when multiple user terminals working in a time division mode are activated at the same time and access a network, each user terminal determines a corresponding network access time slot according to the allocated user ID so that the user terminals activated at the same time forms an access queue for accessing the network; and each user terminal in the access queue accesses the network in sequence according to the determined time slot and sends data frames. The method has the advantages of largely reducing access collision and improving the use rate of channels when multiple user terminals are activated at the same time and need network access.
Description
Technical field
The present invention relates to micropower Internet of Things field, particularly a kind of method and device preventing multiple users access interference.
Background technology
Modern World is a high-speed automated world, and various equipment, can also be interconnected except can with except computer interconnection, and the simplest automation on-line mode uses serial communication exactly.Nowadays, compared with cable technology, wireless technology have cost low, easy to carry, without the need to advantages such as wirings, be widely used in various equipment and system, such as handheld device, battery supply set, industrial data acquisition system, wireless remote-control system, intelligent residential district no-stop charging system etc.The quality of wireless communication protocol is directly connected to the speed of the fail safe of system, the error rate and system cloud gray model, and therefore, in various wireless system applications, wireless communication protocol seems and is even more important.
The agreement being used for processing point to multi--point data communication occurred the earliest is the ALOHA agreement of the U.S., and there is frequency division multiple access (FrequencyDivisionMultipleAccess successively, FDMA), time division multiple access (TimeDivisionMultipleAccess, TDMA), code division multiple access (CodeDivisionMultipleAccess, and the communication mode of the multiple technologies such as space division multiple access (SpaceDivisionMultipleAccess, SDMA) CDMA).The mode sharing of common channel that multiple user may lead to a conflict with certain, the result produced is mutual conflict, occurs the problem that data communication bit error rates improves, channel utilization rate declines.Operation principle and the feature of pure ALOHA agreement are as follows:
Operation principle: as long as website produces frame (namely needing the data sent), receive response at the appointed time if be just sent on channel immediately, then represent and send successfully, otherwise retransmit;
Retransmission policy: website waits for one section of random time, then retransmits, if again conflict, then waits for one section of random time, again until retransmit successfully.
Operation principle and the feature of CDMA slotted ALOHA agreement are as follows:
Operation principle: channel time is divided into discrete time slot, the transmitting time of flute length needed for a frame, each website just can only allow when time slot starts to send, and other processes are identical with pure ALOHA agreement.That is, by the time is divided into discrete timeslice, the pure ALOHA of continuous print is made just to become discrete CDMA slotted ALOHA, like this, user can not send data at once as pure ALOHA agreement, but next timeslice could start to send data by the time, thus avoid the randomness that user sends data, as shown in Table 1 and Table 2, the hazardous area decreased average of conflict is the half of pure ALOHA, and channel utilization brings up to the twice of pure ALOHA agreement.
Table 1-ALOHA protocol violation probability tables
| RTU quantity | Collision probability | Communication efficiency is assessed |
| 1 | 0 | Normally |
| 3 | >80％ | Make mistakes |
| 5 | 100％ | Unavailable |
| 10 | 100％ | Unavailable |
| 30 | 100％ | Unavailable |
Table 2-CDMA slotted ALOHA protocol violation probability tables
| RTU quantity | Collision probability | Communication efficiency is assessed |
| 1 | 0 | Normally |
| 3 | >50％ | Normally |
| 5 | 100％ | Make mistakes |
| 10 | 100％ | Unavailable |
| 30 | 100％ | Unavailable |
The object of working out agreement mainly reduces collision probability, improves communication efficiency.For have a central station and negligible amounts remote terminal system for, ALOHA agreement can manage conflict problem completely effectively, but along with the increase of remote terminal quantity, system communication efficiency can decline to a great extent, and there will be obstruction time serious.For the problem of managing conflict, the multiple remote terminal of CDMA slotted ALOHA protocol requirement is synchronous, and specify that a remote terminal is during a time slot carries out data frame transfer, other remote terminal can not communicate, and only has and just can carry out next channel competition at the end of a time slot.CDMA slotted ALOHA agreement makes the probability conflicted have decline by a relatively large margin, but for wireless identification tag identification system, because remote terminal quantity greatly to tens, hundreds of are even thousands of, trigger condition identical (namely simultaneously having data to need communication), need to process all label datas in finite time (such as in a few second), from table 1 and table 2, pure ALOHA agreement and CDMA slotted ALOHA agreement effectively can not reduce larger amt remote terminal and almost send data and the collision problem that produces simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of method and the device that prevent multiple users access interference, the problem reducing access interference when multiple users is activated simultaneously can be solved better.
According to an aspect of the present invention, provide a kind of method preventing multiple users access interference, comprising:
Distinctive user identifier ID is distributed in advance for each user terminal working in time division mode;
When multiple user terminal working in time division mode is simultaneously activated and carries out network insertion, each described user terminal is according to distributed user identifier ID, determine the time slot of its access network, thus make the multiple user terminals simultaneously activated line up the access queue of access network;
The time slot that each user terminal in described access queue is determined according to it, successively access network send Frame.
Preferably, described distribute distinctive user identifier ID for each user terminal working in time division mode in advance after, the user identifier ID of each user terminal is carried out packet transaction, to make multiple user terminals of activation line up the access queue of access network by group.
Preferably, the time slot that each user terminal in described access queue is determined according to it, access network the step sending Frame comprise successively:
Each user terminal in described access queue, when the time slot of the access network that it is determined arrives, is intercepted data transmission channel in default time of intercept;
If do not listen to preceding user terminal to take described data transmission channel and carry out data frame transfer in described default time of intercept, then access network send Frame;
If listen to preceding user terminal to take described data transmission channel and carry out data frame transfer in described default time of intercept, then stop access network, and redefine the time slot of its access network.
Preferably, the time slot that each user terminal in described access queue is determined according to it, successively access network after sending Frame, also comprising:
The user terminal wait-receiving mode having sent Frame carrys out the response of automatic network;
If the user terminal having sent Frame receives the response of automatic network, then described user terminal enters inactivated state;
If the user terminal having sent Frame does not receive the response of automatic network, then described user terminal is by redefining the time slot of its access network, and access network also sends Frame again.
Preferably, described user terminal generates random number, and according to described random number, redefines the time slot of its access network.
According to a further aspect in the invention, provide a kind of device preventing multiple users access interference, comprising:
ID arranges module, for distributing distinctive user identifier ID for each user terminal working in time division mode in advance;
Time slot determination module, for when multiple user terminal working in time division mode is simultaneously activated and carries out network insertion, according to the user identifier ID distributing to each described user terminal, determine the time slot of each described accessing user terminal to network, thus make the multiple user terminals simultaneously activated line up the access queue of access network;
Network access module, for the time slot of the access network according to each user terminal in determined described access queue, access network send Frame successively.
Preferably, described ID arrange module also for described distribute distinctive user identifier ID for each user terminal working in time division mode in advance after, the user identifier ID of each user terminal is carried out packet transaction, to make multiple user terminals of activation line up the access queue of access network by group.
Preferably, when the time slot of each accessing user terminal to network of described network access module in determined access queue arrives, in default time of intercept, data transmission channel is intercepted, if do not listen to preceding user terminal to take described data transmission channel in described default time of intercept, then access network send Frame, otherwise stopping access network, and the time slot again being determined described accessing user terminal to network by described time slot determination module.
Preferably, described network access module is also at access network and after sending Frame, wait-receiving mode carrys out the response of automatic network, if receive the response of automatic network, then inactivation process is carried out to described user terminal, make it enter inactivated state, otherwise, redefine the time slot of the access network of described user terminal, make its access network send Frame again.
Preferably, described time slot determination module also for generating random number, and according to described random number, redefines the time slot of accessing user terminal to network.
Compared with prior art, beneficial effect of the present invention is:
The present invention, when multiple users is simultaneously activated and needs to carry out network insertion, significantly can reduce access interference, improves channel utilization rate.
Accompanying drawing explanation
Fig. 1 is the first pass figure preventing multiple users access interference that the embodiment of the present invention provides;
Fig. 2 is the second flow chart preventing multiple users access interference that the embodiment of the present invention provides;
Fig. 3 is the device block diagram preventing multiple users access interference that the embodiment of the present invention provides;
Fig. 4 is the system block diagram preventing multiple users access interference that the embodiment of the present invention provides.
Embodiment
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Fig. 1 is the method flow diagram preventing multiple users access interference that the embodiment of the present invention provides, and as shown in Figure 1, step comprises:
Step S101: distribute distinctive user identifier ID for each user terminal working in time division mode in advance.
Further, when the quantity of user terminal is larger, the user identifier ID of each user terminal can be carried out packet transaction, to make multiple user terminals of activation line up the access queue of access network by group.Such as user terminal is divided into two groups, the first component group radix is 0xxH, and second component group radix is 0yyH, a general 0yyH magnitude less of 0xxH.
Step S102: when multiple user terminal working in time division mode is simultaneously activated and carries out network insertion, each described user terminal is according to distributed user identifier ID, determine the time slot of its access network, thus make the multiple user terminals simultaneously activated line up the access queue of access network.
The transmission cycle of tentation data frame is T, and user terminal quantity is 0zzH.
If divide into groups, then the time slot of accessing user terminal to network is id*0zzH*T;
If divide into groups, then for the user terminal of first group, the time slot of its access network is id*0xxH*T, and for the user terminal of second group, the time slot of its access network is 0xxH*T+id*0yyH*T.
Step S103: the time slot that each user terminal in described access queue is determined according to it, successively access network send Frame.
Further, when user terminal cannot carry out the whole network synchronous time, in order to avoid conflict, user terminal can transmission Frame before, data transmission channel is intercepted.Specifically, each user terminal in described access queue is when the time slot of the access network that it is determined arrives, in default time of intercept, (such as 2ms) intercepts data transmission channel, if do not listen to preceding user terminal to take described data transmission channel and carry out data frame transfer in described default time of intercept, then access network send Frame, otherwise stopping access network, and the time slot redefining its access network.
For the user terminal needing the time slot redefining access network, the time slot of access network can be redefined by following two kinds of modes:
1, user terminal is according to user identifier ID, grouping radix, transmission cycle T, redefines the time slot of its access network.
2, user terminal generates a random number, and according to generated random number, redefines the time slot of its access network.Wherein, the size of described random number is greater than the quantity of user terminal.
Fig. 2 is the second flow chart preventing multiple users access interference that the embodiment of the present invention provides, and as shown in Figure 2, step comprises:
Step 201: distribute distinctive user identifier ID for each user terminal working in time division mode in advance.
Further, when the quantity of user terminal is larger, the user identifier ID of each user terminal can be carried out packet transaction, to make multiple user terminals of activation line up the access queue of access network by group.Such as, suppose to there is 50H user terminal, it can be first group and second group by the user identifier ID packet transaction of a described 50H user terminal, wherein, first component group radix is 40H, preceding for user identifier ID 64 user terminals can be assigned as first group, and the second grouping radix is 20H, posterior for user identifier ID 16 user terminals can be assigned as second group.
Step S202: when multiple user terminal working in time division mode is simultaneously activated and carries out network insertion, each described user terminal is according to distributed user identifier ID, determine the time slot of its access network, thus make the multiple user terminals simultaneously activated line up the access queue of access network.
The transmission cycle of tentation data frame is T, and user terminal quantity is 50H.
If divide into groups, then the time slot of accessing user terminal to network is id*50H*T;
If divide into groups, be then first group of 40H for grouping radix, the time slot of the access network of user terminal is id*40H*T, and be second group of 20H for grouping radix, the time slot of the access network of user terminal is 40H*T+id*20H*T.
Step S103: the time slot that each user terminal in described access queue is determined according to it, successively access network send Frame.
Step S104: the user terminal wait-receiving mode having sent Frame carrys out the response of automatic network.
Step S105: if the user terminal having sent Frame receives the response of automatic network, then described user terminal enters inactivated state, otherwise described user terminal is by redefining the time slot of its access network, and access network also sends Frame again.
Similarly, for the user terminal needing the time slot redefining access network, the time slot of access network can be redefined by following two kinds of modes:
1, user terminal is according to user identifier ID, grouping radix, transmission cycle T, redefines the time slot of its access network.
2, user terminal generates a random number, and according to generated random number, redefines the time slot of its access network.Wherein, the size of described random number is greater than the quantity of user terminal.
Fig. 3 is the system block diagram preventing multiple users access interference that the embodiment of the present invention provides, and as shown in Figure 3, comprises ID and arranges module 10, time slot determination module 20 and network access module 30.
ID arranges module 10 for distributing distinctive user identifier ID for each user terminal working in time division mode in advance.When user terminal quantity is larger, the user identifier ID of each user terminal can be carried out packet transaction, such as, be divided into two groups, now, a grouping radix magnitude less of first group of general second group.
Time slot determination module 20 is for when multiple user terminal working in time division mode is simultaneously activated and carries out network insertion, according to the user identifier ID distributing to each described user terminal, determine the time slot of each described accessing user terminal to network, thus make the multiple user terminals simultaneously activated line up the access queue of access network.The grouping situation of module 10 is set according to ID, time slot determination module 20 carries out the time slot allocation of different modes, such as, when user terminal quantity is 0xxH, do not divide into groups if ID arranges module 10, then time slot determination module 20 determines that the time slot of the access network of each user terminal is id*0zzH*T, and wherein T is the transmission cycle of Frame; If ID arranges second group that user terminal is divided into grouping radix to be first group of 0xxH and grouping radix being 0yyH by module 10, then for the user terminal of first group, the time slot of access network is id*0xxH*T, and for the user terminal of second group, the time slot of access network is 0xxH*T+id*0yyH*T.
Network access module 30 is for the time slot of the access network according to each user terminal in determined described access queue, access network send Frame successively, and at access network and after sending Frame, wait-receiving mode carrys out the response of automatic network, if receive the response of automatic network, then carries out inactivation process to described user terminal, it is made to enter inactivated state, otherwise, redefine the time slot of the access network of described user terminal, make its access network send Frame again.
It should be noted that, for avoiding at front user terminal data transmission delay and the time slot taken at rear user terminal, leading to a conflict.When the time slot of each accessing user terminal to network of described network access module in determined access queue arrives, in default time of intercept, data transmission channel is intercepted, if do not listen to preceding user terminal to take described data transmission channel in described default time of intercept, then access network send Frame, otherwise stopping access network, and the time slot again being determined described accessing user terminal to network by described time slot determination module.
The above-mentioned mode redefining the time slot of accessing user terminal to network includes but not limited to following two kinds:
1, time slot determination module 20 is according to user identifier ID, grouping radix, transmission cycle T, redefines the time slot of its access network;
2, time slot determination module 20 generates random number, and according to described random number, redefines the time slot of accessing user terminal to network, and wherein, the size of random number is greater than user terminal quantity.
Fig. 4 is the system block diagram preventing multiple users access interference that the embodiment of the present invention provides, in wireless identification tag identification (as personnel) application system, when being activated at one time more than 10 RTU, and need to complete at short notice in identity and give the correct time, because access interference significantly increases, channel utilization lowers, corrupted data or loss situation serious, the application system of free requirement similar to Figure 4 cannot be met, namely utilize existing communications protocol cannot identify a large amount of mobile personnels in Fig. 4 system at short notice.And the present embodiment can solve multiple spot (more than 10 RTU) to a bit (MTU) data communication collision problem, be applicable to free requirement and the application system that the RTU quantity of access network is large simultaneously, can not loss of data be caused.
As shown in Figure 4, n user carries user terminal and the remote terminal (RemoteTerminalUnit that has specific user identifier respectively, RTU), and pass through gate inhibition, RTU1, RTU2 ... RTUn is after passing through gate control system, access network also sends Frame to central station (MasterTerminalUnit, MTU).
Gate control system comprises:
Code sender, is used for generating A coded signal and B coded signal;
Antenna A, is arranged on inside doorframe, for launching A coded signal;
Antenna B, is arranged on outside doorframe, for launching B coded signal.
Wherein, code sender circulation generates A coded signal and B coded signal, and launch A coded signal and B coded signal successively by antenna A and antenna B in a time division manner, such as, the T1 moment launches A coded signal, and the T1+a moment launches B coded signal, and the T1+2a moment launches A coded signal, the T1+3a moment launches B coded signal, by that analogy.A>0, concrete value can be arranged as required, such as, can be set to 1ms, 2ms etc.
Specific works flow process is as follows:
Step 1: be each the user terminal RTU1 working in time division mode, RTU2 ... RTUn distributes distinctive user identifier ID.
Can according to the demand adjustment packet parameters of actual RTU quantity, when RTU quantity is larger, grouping radix also corresponding adjustment is about 2/3rds of RTU quantity, if not high by time requirement, can larger the adjustment of grouping numerical value, the actual needs of concrete viewing system and determining.
Step 2: work as RTU1, RTU2 ... RTUn is close to gate control system and when entering the magnetic induction district of gate control system, RTU1, RTU2 ... RTUn is simultaneously activated.
Step 3: for some user terminal RTU, when user carries RTU from inside to outside by gate inhibition, RTU receives the A coded signal of described antenna A transmitting and the B coded signal of described antenna B transmitting successively, and arrange according to time of reception after received A coded signal and B coded signal are decoded, formed formed by A code and B code first judge code sequence, and utilize described first to judge code sequence, determine that the turnover direction of the user carrying described user terminal is direction of going out; And when user carries RTU ecto-entad by gate inhibition, RTU receives the B coded signal of described antenna B transmitting and the A coded signal of described antenna A transmitting successively, and arrange according to time of reception after received B coded signal and A coded signal are decoded, formed formed by B code and A code second judge code sequence, and utilize described second to judge code sequence, determine that the turnover direction of the user carrying described user terminal is direction of entering.
Step 4:RTU1, RTU2 ... RTUn, according to distributed user identifier ID, determines the time slot of its access network, thus makes the multiple user terminals simultaneously activated line up the access queue of access network.
Step 5: the RTU1 in access queue, RTU2 ... the time slot that RTUn determines according to it, intercepts data transmission channel, if do not have data frame transfer in described data transmission channel, then access network also sends the Frame comprising turnover directional information and user identifier ID.
Step 6: the RTU1 having sent Frame, RTU2 ... RTUn wait-receiving mode within the default stand-by period carrys out the response of automatic network.
Step 7: if sent the response of RTU at default stand-by period adduction arrival automatic network of Frame, then this RTU enters inactivated state, otherwise by redefining the time slot of its access network, access network also comprises the Frame passing in and out directional information and user identifier ID again described in transmission.
After adopting technical scheme provided by the invention, collision probability table is as shown in table 3, and when by adjustment packet parameters (comprising number of packet and grouping radix), RTU quantity is 50, collision probability declines on the contrary.
Table 3-collision probability table of the present invention
| RTU quantity | Collision probability | Communication efficiency is assessed |
| 1 | 0 | Normally |
| 3 | <5％ | Normally |
| 5 | <10％ | Normally |
| 10 | <15％ | Normally |
| 20 | <20％ | Normally |
| 30 | <25％ | Normally |
| 50 | <15％ | Normally |
In sum, the present invention has following technique effect:
By adopting technical scheme provided by the invention, can effectively reduce multiple users simultaneously access network time produce the probability of conflict, substantially increase channel utilization, improve communication efficiency.
Although above to invention has been detailed description, the present invention is not limited thereto, those skilled in the art of the present technique can carry out various amendment according to principle of the present invention.Therefore, all amendments done according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (10)
1. prevent a method for multiple users access interference, it is characterized in that, comprising:
Distinctive user identifier ID is distributed in advance for each user terminal working in time division mode;
When multiple user terminal working in time division mode is simultaneously activated and carries out network insertion, each described user terminal is according to distributed user identifier ID, determine the time slot of its access network, thus make the multiple user terminals simultaneously activated line up the access queue of access network;
The time slot that each user terminal in described access queue is determined according to it, successively access network send Frame.
2. method according to claim 1, it is characterized in that, described distribute distinctive user identifier ID for each user terminal working in time division mode in advance after, the user identifier ID of each user terminal is carried out packet transaction, to make multiple user terminals of activation line up the access queue of access network by group.
3. method according to claim 1, is characterized in that, the time slot that each user terminal in described access queue is determined according to it, and access network the step sending Frame comprise successively:
Each user terminal in described access queue, when the time slot of the access network that it is determined arrives, is intercepted data transmission channel in default time of intercept;
If do not listen to preceding user terminal to take described data transmission channel and carry out data frame transfer in described default time of intercept, then access network send Frame;
If listen to preceding user terminal to take described data transmission channel and carry out data frame transfer in described default time of intercept, then stop access network, and redefine the time slot of its access network.
4. the method according to claim 1-3 any one, is characterized in that, the time slot that each user terminal in described access queue is determined according to it, successively access network after sending Frame, also comprising:
The user terminal wait-receiving mode having sent Frame carrys out the response of automatic network;
If the user terminal having sent Frame receives the response of automatic network, then described user terminal enters inactivated state;
If the user terminal having sent Frame does not receive the response of automatic network, then described user terminal is by redefining the time slot of its access network, and access network also sends Frame again.
5. method according to claim 4, is characterized in that, described user terminal generates random number, and according to described random number, redefines the time slot of its access network.
6. prevent a device for multiple users access interference, it is characterized in that, comprising:
ID arranges module, for distributing distinctive user identifier ID for each user terminal working in time division mode in advance;
Time slot determination module, for when multiple user terminal working in time division mode is simultaneously activated and carries out network insertion, according to the user identifier ID distributing to each described user terminal, determine the time slot of each described accessing user terminal to network, thus make the multiple user terminals simultaneously activated line up the access queue of access network;
Network access module, for the time slot of the access network according to each user terminal in determined described access queue, access network send Frame successively.
7. device according to claim 6, it is characterized in that, described ID arrange module also for described distribute distinctive user identifier ID for each user terminal working in time division mode in advance after, the user identifier ID of each user terminal is carried out packet transaction, to make multiple user terminals of activation line up the access queue of access network by group.
8. device according to claim 6, it is characterized in that, when the time slot of each accessing user terminal to network of described network access module in determined access queue arrives, in default time of intercept, data transmission channel is intercepted, if do not listen to preceding user terminal to take described data transmission channel in described default time of intercept, then access network send Frame, otherwise stopping access network, and the time slot again being determined described accessing user terminal to network by described time slot determination module.
9. the device according to claim 6-8 any one, it is characterized in that, described network access module is also at access network and after sending Frame, wait-receiving mode carrys out the response of automatic network, if receive the response of automatic network, then carries out inactivation process to described user terminal, it is made to enter inactivated state, otherwise, redefine the time slot of the access network of described user terminal, make its access network send Frame again.
10. device according to claim 9, is characterized in that, described time slot determination module also for generating random number, and according to described random number, redefines the time slot of accessing user terminal to network.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604409A (en) * | 2016-12-30 | 2017-04-26 | 成都怡康科技有限公司 | Wireless communication method applied to mobile population communication |
| CN107041010A (en) * | 2017-06-13 | 2017-08-11 | 海能达通信股份有限公司 | A kind of method for realizing service access, base station and mobile terminal |
| CN109905197A (en) * | 2019-01-31 | 2019-06-18 | 江苏金智科技股份有限公司 | A kind of wireless anti-interference method and fault detector retransmitted based on random number |
| CN112788778A (en) * | 2019-11-01 | 2021-05-11 | 苏州千米电子科技有限公司 | Data sending method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080198815A1 (en) * | 2007-02-21 | 2008-08-21 | Itt Manufacturing Enterprises, Inc. | Nearly Collision-Free Channel Access System and Method |
| WO2011161152A1 (en) * | 2010-06-23 | 2011-12-29 | Ml-C Mobilelocation-Company Gmbh | Sending a message from a telecommunication device to a mobile telecommunication network |
| CN103228019A (en) * | 2012-08-28 | 2013-07-31 | 陈波 | Wireless channel access method applicable to railway operation and other scenes |
| CN103477697A (en) * | 2011-04-02 | 2013-12-25 | 阿尔卡特朗讯 | Slotted access for wireless communication devices and control thereof |
-
2015
- 2015-07-23 CN CN201510439354.0A patent/CN105307282B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080198815A1 (en) * | 2007-02-21 | 2008-08-21 | Itt Manufacturing Enterprises, Inc. | Nearly Collision-Free Channel Access System and Method |
| WO2011161152A1 (en) * | 2010-06-23 | 2011-12-29 | Ml-C Mobilelocation-Company Gmbh | Sending a message from a telecommunication device to a mobile telecommunication network |
| CN103477697A (en) * | 2011-04-02 | 2013-12-25 | 阿尔卡特朗讯 | Slotted access for wireless communication devices and control thereof |
| CN103228019A (en) * | 2012-08-28 | 2013-07-31 | 陈波 | Wireless channel access method applicable to railway operation and other scenes |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604409A (en) * | 2016-12-30 | 2017-04-26 | 成都怡康科技有限公司 | Wireless communication method applied to mobile population communication |
| CN106604409B (en) * | 2016-12-30 | 2020-02-21 | 成都怡康科技有限公司 | Wireless communication method applied to mobile group communication |
| CN107041010A (en) * | 2017-06-13 | 2017-08-11 | 海能达通信股份有限公司 | A kind of method for realizing service access, base station and mobile terminal |
| CN109905197A (en) * | 2019-01-31 | 2019-06-18 | 江苏金智科技股份有限公司 | A kind of wireless anti-interference method and fault detector retransmitted based on random number |
| CN112788778A (en) * | 2019-11-01 | 2021-05-11 | 苏州千米电子科技有限公司 | Data sending method and device |
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| Publication number | Publication date |
|---|---|
| CN105307282B (en) | 2016-11-09 |
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