CN103458531A - Data transmitting method and relevant device - Google Patents
Data transmitting method and relevant device Download PDFInfo
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- CN103458531A CN103458531A CN2013103473290A CN201310347329A CN103458531A CN 103458531 A CN103458531 A CN 103458531A CN 2013103473290 A CN2013103473290 A CN 2013103473290A CN 201310347329 A CN201310347329 A CN 201310347329A CN 103458531 A CN103458531 A CN 103458531A
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Abstract
The invention discloses a data transmitting method and a relevant device. The method comprises the step of allowing a first terminal to have access to an AP device if the first terminal requests to have access to the AP device serving as an access point and the total flow of the AP device does not reach the upper limit value; the step of distributing a transmitting time frame to the first terminal according to received measurement data sent by the first terminal and informing the first terminal, wherein the transmitting time frame of the first terminal is used for transmitting the data of the first terminal; the step of transmitting the data for the first terminal according to the transmitting time frame allocated to the first terminal. The data transmitting method can ensure the performance of the whole network.
Description
Technical field
The present invention relates to communication technical field, espespecially a kind of data transmission method and relevant apparatus.
Background technology
WLAN (wireless local area network) (Wireless Local Area Networks, WLAN) be data transmission network very easily, it utilizes radio frequency (Radio Frequency, RF) technology, replace traditional LAN that copper twisted pairs was formed with wireless mode, work in 2.4GHz or 5.8GHz frequency range.
In recent years after the fast development of having experienced the WLAN technology, because the advantages such as its performance is high, dispose flexibly, cost is low make it become the preferred network access way of last kilometer application.And video monitoring is exactly an exemplary, the core architecture of video monitoring as shown in Figure 1, comprise network system 1 and video monitoring system 2, network system 1 comprises server 10, wireless controller 11, switch 12 and access point (Access Point, AP) 13, video monitoring system 2 comprises multipair terminal and IP Camera, is designated as CPE200, IP Camera 210, CPE201, IP Camera 211......CPE205, IP Camera 215, wherein, terminal means with CPE.
The video data that IP Camera arrives at front-end collection, be transferred to terminal with wired mode, and terminal is converted to wireless signal by wire signal again and sends AP to directional antenna, and AP delivers to the video data transmitting of each terminal in network.Wherein, the video data of IP Camera collection transmits with the frame of video of fixing, and the size of frame of video is fixed, and the time interval of collection is also fixed.Such as the camera of a 1080p, per second transmits 25 frames, only can send out a frame of video in this camera 40ms so in other words, distributes the next frame of video of the collection to be sent such as rear.
In WLAN, the A node can be seen by the B node, still but can not be seen by the C node with the B node communication, and the A node is concealed nodes for the C node so.
Suppose, CPE200 is concealed nodes for CPE201,, because CPE201 can't hear CPE200, transmit when transmitting data as CPE200, also can want to transmit, now AP will receive the stack of two signals and cause can't demodulation simultaneously, cause all bust thiss of CPE200 and CPE201, because video flowing is real-time, so they all will be given out a contract for a project again, if exist to disturb always, will make whole network in paralyzed state, can't transmit any data.Visible, the existence of concealed nodes causes whole network performance to descend, and even causes whole network to communicate by letter.
Summary of the invention
The embodiment of the present invention provides a kind of data transmission method and relevant apparatus, in order to solve the existence of concealed nodes in prior art, causes whole network performance to descend, the problem that even causes whole network to communicate by letter.
Therefore, according to one embodiment of the invention, provide a kind of data transmission method, comprising:
If have the total flow of first terminal request access access point AP equipment and described AP equipment not arrive higher limit, allow described first terminal to access described AP equipment;
The test data sent according to the described first terminal received is that described first terminal distributes the transmission period, and notifies described first terminal, and the transmission period of described first terminal is for transmitting the data of described first terminal;
According to the transmission period of distributing to described first terminal, be that described first terminal transmits data.
Data transmission method in this scheme can distribute the transmission period for the terminal of each access AP equipment, terminal is transmitted data according to the transmission period of distributing, even there is concealed nodes to exist, because each terminal has transmission time of the bandwidth of exclusively enjoying, two terminals situation of transmitted signal simultaneously can not occur again, reduced the probability mutually collided between terminal, air interference reduces greatly, and can improve the stability of terminal transmission data, bandwidth availability ratio has also obtained greatly improving, and guarantees the performance of whole network.
Concrete, the test data sent according to the described first terminal received is that described first terminal distributes the transmission period, specifically comprises:
After receiving the described test data of described first terminal transmission, determine the time of the described test data of transmission;
According to the time of transmitting described test data, be that described first terminal distributes the transmission period.
According to time of transmitting test data can be according to the transmission period that accurately is defined as first terminal and distributes.
Preferably, also comprise:
If definite the second terminal is left described AP equipment, be released to the transmission period of described the second terminal distribution.
Preferably, after being released to the transmission period of described the second terminal distribution, also comprise:
Again transmit the period for the terminal distribution of the described AP equipment of access.
Leave AP equipment once define terminal, be released to the transmission time of this terminal distribution, and be better transmission period of office terminal in all terminal distribution transmission times of access AP again.
The embodiment of the present invention also provides a kind of data transmission method, comprising:
Send access request to access point AP equipment, and receive the access response that described AP equipment returns;
Send test data to described AP equipment, and receive the transmission period that described AP equipment returns;
According to the described transmission period to described AP equipment transmission data.
The transmission period that data transmission method in this scheme returns at reception AP equipment, transmit data according to the transmission period received, because each terminal has transmission time of the bandwidth of exclusively enjoying, two terminals situation of transmitted signal simultaneously can not occur again, reduced the probability mutually collided between terminal, air interference reduces greatly, and can improve the stability of terminal transmission data, bandwidth availability ratio has also obtained greatly improving, and guarantees the performance of whole network.
The embodiment of the present invention also provides a kind of data transmission device, comprising:
Access unit, if do not arrive higher limit for the total flow that first terminal request access access point AP equipment and described AP equipment are arranged, allow described first terminal to access described AP equipment;
Allocation units, the test data sent for the described first terminal according to receiving is that described first terminal distributes the transmission period, and notifies described first terminal, the transmission period of described first terminal is for transmitting the data of described first terminal;
Transmission unit is that described first terminal transmits data for the transmission period according to distributing to described first terminal.
Data transmission device in this scheme can distribute the transmission period for the terminal of each access AP equipment, terminal is transmitted data according to the transmission period of distributing, even there is concealed nodes to exist, because each terminal has transmission time of the bandwidth of exclusively enjoying, two terminals situation of transmitted signal simultaneously can not occur again, reduced the probability mutually collided between terminal, air interference reduces greatly, and can improve the stability of terminal transmission data, bandwidth availability ratio has also obtained greatly improving, and guarantees the performance of whole network.
Concrete, described transmission unit, specifically for:
After receiving the described test data of described first terminal transmission, determine the time of the described test data of transmission;
According to the time of transmitting described test data, be that described first terminal distributes the transmission period.
According to time of transmitting test data can be according to the transmission period that accurately is defined as first terminal and distributes.
Preferably, described allocation units, also for:
If definite the second terminal is left described AP equipment, be released to the transmission period of described the second terminal distribution.
Preferably, described allocation units, also for:
After being released to the transmission period of described the second terminal distribution, again for the terminal distribution of the described AP equipment of access, transmit the period.
Leave AP equipment once define terminal, be released to the transmission time of this terminal distribution, and be better transmission period of office terminal in all terminal distribution transmission times of access AP again.
The embodiment of the present invention also provides a kind of data transmission device, comprises transmitting element and receiving element, wherein:
Described transmitting element, for sending access request to access point AP equipment; After described receiving element receives the access response that described AP equipment returns, to described AP equipment, send test data; After described receiving element receives the transmission period that described AP equipment returns, according to the described transmission period to described AP equipment transmission data;
Described receiving element, for receiving described access response and described transmission period.
After the transmission period that data transmission device in this scheme returns at reception AP equipment, transmit data according to the transmission period received, because each terminal has transmission time of the bandwidth of exclusively enjoying, two terminals situation of transmitted signal simultaneously can not occur again, reduced the probability mutually collided between terminal, air interference reduces greatly, and can improve the stability of terminal transmission data, bandwidth availability ratio has also obtained greatly improving, and guarantees the performance of whole network.
The embodiment of the present invention also provides a kind of network equipment, comprises above-mentioned arbitrary data transmission device.
The network equipment in this scheme can distribute the transmission period for the terminal of each access AP equipment, terminal is transmitted data according to the transmission period of distributing, even there is concealed nodes to exist, because each terminal has transmission time of the bandwidth of exclusively enjoying, two terminals situation of transmitted signal simultaneously can not occur again, reduced the probability mutually collided between terminal, air interference reduces greatly, and can improve the stability of terminal transmission data, bandwidth availability ratio has also obtained greatly improving, and guarantees the performance of whole network.
The embodiment of the present invention also provides a kind of terminal, comprises above-mentioned arbitrary data transmission device.
After the transmission period that terminal in this scheme is returned at reception AP equipment, transmit data according to the transmission period received, because each terminal has transmission time of the bandwidth of exclusively enjoying, two terminals situation of transmitted signal simultaneously can not occur again, reduced the probability mutually collided between terminal, air interference reduces greatly, and can improve the stability of terminal transmission data, bandwidth availability ratio has also obtained greatly improving, and guarantees the performance of whole network.
The accompanying drawing explanation
The schematic diagram that Fig. 1 is the core architecture of video monitoring in prior art;
The flow chart that Fig. 2 is the first data transmission method in the embodiment of the present invention;
The flow chart that Fig. 3 is the second data transmission method in the embodiment of the present invention;
The structural representation that Fig. 4 is the first data transmission device in the embodiment of the present invention;
The structural representation that Fig. 5 is the second data transmission device in the embodiment of the present invention.
Embodiment
Existence for concealed nodes in prior art causes whole network performance to descend, the problem that even causes whole network to communicate by letter, and the embodiment of the present invention provides two kinds of data transmission methods, and the flow process of first method is as shown in Figure 2.AP equipment can be divided into fat AP equipment and thin AP equipment at present, so-called fat AP equipment is not rely on access controller (Access Controller, AC) equipment and the AP equipment that independently manages, debug and control, thin AP equipment refers to the AP equipment that needs AC equipment to manage, debug and control, the executive agent of the method can be fat AP equipment, can be also AC equipment, concrete execution step be as follows:
S20: if there is the total flow of first terminal request access AP equipment and AP equipment not arrive higher limit, allow first terminal access AP equipment.
When receiving the access request of first terminal, at first determine whether the total flow of AP equipment has arrived higher limit, if arrived higher limit, AP equipment can't be other Terminal Service again, refuses first terminal access AP equipment; If the higher limit of arrival, can allow first terminal access AP equipment.Wherein, higher limit can be according to the maximum bandwidth setting of network system, can be set to be less than or equal to the arbitrary value of the maximum bandwidth of network system.
S21: the test data sent according to the first terminal received is that first terminal distributes the transmission period, and the notice first terminal, and the transmission period of first terminal is for transmitting the data of first terminal.
After first terminal learns that AP equipment allows access, the data that send to AP equipment for the first time are as test data, and test data can be the data that first terminal need to send, and can be also to be used for specially determining the data that the transmission period arranges.AP equipment or AC equipment can be by unappropriated idle period notice first terminals, then receive the data that first terminal sends for the first time in unappropriated idle period, and the test data using these data as first terminal, then according to the test data received, be that first terminal distributes the transmission time, the form of test data can be frame of video, message etc.
S22: be that first terminal transmits data according to the transmission period of distributing to first terminal.
This scheme can be distributed the transmission period for the terminal of each access AP equipment, terminal is transmitted data according to the transmission period of distributing, even there is concealed nodes to exist, because each terminal has transmission time of the bandwidth of exclusively enjoying, two terminals situation of transmitted signals simultaneously can not occur again, reduced between terminal the probability of collision mutually, air interference reduces greatly, and can improve the stability of terminal transmission data, bandwidth availability ratio has also obtained greatly improving, and guarantees the performance of whole network.
Specifically, the test data sent according to the first terminal received in above-mentioned S21 is that first terminal distributes the transmission period, specifically comprises: after receiving the test data of first terminal transmission, determine the time of transmitting test data; According to time of transmitting test data, be that first terminal distributes the transmission period.
For frame of video, fixed-size message, test data can be frame of video, message arbitrarily; For the message differed in size, test data can be maximum message, and the transmission period tested out like this can be guaranteed follow-up each message can being sent.Time by transmitting test data just can be distributed the transmission period for first terminal.
The transmission period of all terminals of time shaft record access AP equipment can be adopted, the alternate manner record can certainly be adopted.During the period, can, using the time interval of terminal transmission data as one-period, be distributed to all terminals of access AP equipment the time in one-period in the transmission that adopts time shaft to record all terminals that access AP equipment.The timing mode in cycle has multiple, below enumerate two kinds of modes and remember row explanation into: a kind ofly be, after each end cycle, all, again since 0 timing constantly, assumption period is 40ms, and the transmission period of distributing for the terminal 1 of access AP equipment is 0～3ms, the moment on each time shaft is while arriving 0ms, for terminal 1 transmission data, after within the 4th second, receiving, be next terminal transmission data; Another kind of, can adopt the mode of accumulation timing, assumption period is 40ms, be reflected on time shaft is exactly to be that 0-39ms, second period are that 40～79ms, the 3rd cycle are 80～119ms...... in first cycle, the transmission period of distributing for the terminal 1 of access AP equipment is the ms of 0～3ms, 40～43ms, 80～83ms......40n～(40n+3), each cycle within first 4 seconds, be terminal 1 transmission data, after the 4th second finishes, be next terminal transmission data.
Preferably, above-mentioned data transmission method also comprises: if definite the second terminal is left AP equipment, be released to the transmission period of the second terminal distribution.
Preferably, after the above-mentioned transmission period that is released to the second terminal distribution, also comprise: be terminal distribution transmission period of access AP equipment again.
After having terminal to leave AP equipment, can be released to the transmission period of this terminal distribution, after release, may appear at the situations such as two free time between terminal is very long, for the transmission period of saving resource and reasonable distribution terminal, can again for the terminal distribution of access AP equipment, transmit the period, and notify corresponding terminal.
Concrete, the above-mentioned transmission period comprises start time point and time span, or start time point and termination time point.
Based on same inventive concept, the embodiment of the present invention provides the second data transmission method, and as shown in Figure 3, executive agent can be terminal to the flow process of the method, and concrete execution step is as follows:
S30: send access request to AP equipment, and receive the access response that AP equipment returns.
S31: send test data to AP equipment, and receive the transmission period that AP equipment returns.
Terminal equipment can send test data at the idle period of AP equipment.
S32: according to transmitting the period to the AP equipment transmission data.
After receiving the transmission period that AP equipment returns, follow-up data can be transmitted in this transmits the period.
Concrete, the above-mentioned transmission period comprises start time point and time span, or start time point and termination time point.
Based on same inventive concept, for the first data transmission method, the embodiment of the present invention provides a kind of data transmission device, and this device can be arranged in the network equipments such as AP equipment, AC equipment, and structure as shown in Figure 4, comprising:
Concrete, above-mentioned transmission unit 42, specifically for:
After receiving the test data of first terminal transmission, determine the time of transmitting test data;
According to time of transmitting test data, be that first terminal distributes the transmission period.
Preferably, above-mentioned allocation units 41, also for:
If definite the second terminal is left AP equipment, be released to the transmission period of the second terminal distribution.
Preferably, above-mentioned allocation units 41, also for after being released to the transmission period of the second terminal distribution, transmit the period for the terminal distribution of access AP equipment again.
Based on same inventive concept, for the second data transmission method, the embodiment of the present invention provides a kind of data transmission device, and this device is arranged in terminal, and structure as shown in Figure 5, comprises transmitting element 50 and receiving element 51, wherein:
Above-mentioned transmitting element 50, for sending access request to AP equipment; After receiving element 51 receives the access response that AP equipment returns, to AP equipment, send test data; After receiving element 51 receives the transmission period that AP equipment returns, according to the transmission period to the AP equipment transmission data.
Above-mentioned receiving element 51, the access response and the transmission period that for receiving AP equipment, send.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect fully.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention describes with reference to flow chart and/or the block diagram of method, equipment (system) and computer program according to the embodiment of the present invention.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction be stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device, make and carry out the sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out on computer or other programmable devices is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the embodiment of the present invention the embodiment of the present invention.Like this, if within these of the embodiment of the present invention are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. a data transmission method, is characterized in that, comprising:
If have the total flow of first terminal request access access point AP equipment and described AP equipment not arrive higher limit, allow described first terminal to access described AP equipment;
The test data sent according to the described first terminal received is that described first terminal distributes the transmission period, and notifies described first terminal, and the transmission period of described first terminal is for transmitting the data of described first terminal;
According to the transmission period of distributing to described first terminal, be that described first terminal transmits data.
2. the method for claim 1, is characterized in that, the test data sent according to the described first terminal received is that described first terminal distributes the transmission period, specifically comprises:
After receiving the described test data of described first terminal transmission, determine the time of the described test data of transmission;
According to the time of transmitting described test data, be that described first terminal distributes the transmission period.
3. the method for claim 1, is characterized in that, also comprises:
If definite the second terminal is left described AP equipment, be released to the transmission period of described the second terminal distribution.
4. method as claimed in claim 3, is characterized in that, after being released to the transmission period of described the second terminal distribution, also comprises:
Again transmit the period for the terminal distribution of the described AP equipment of access.
5. a data transmission method, is characterized in that, comprising:
Send access request to access point AP equipment, and receive the access response that described AP equipment returns;
Send test data to described AP equipment, and receive the transmission period that described AP equipment returns;
According to the described transmission period to described AP equipment transmission data.
6. a data transmission device, is characterized in that, comprising:
Access unit, if do not arrive higher limit for the total flow that first terminal request access access point AP equipment and described AP equipment are arranged, allow described first terminal to access described AP equipment;
Allocation units, the test data sent for the described first terminal according to receiving is that described first terminal distributes the transmission period, and notifies described first terminal, the transmission period of described first terminal is for transmitting the data of described first terminal;
Transmission unit is that described first terminal transmits data for the transmission period according to distributing to described first terminal.
7. device as claimed in claim 6, is characterized in that, described transmission unit, specifically for:
After receiving the described test data of described first terminal transmission, determine the time of the described test data of transmission;
According to the time of transmitting described test data, be that described first terminal distributes the transmission period.
8. device as claimed in claim 6, is characterized in that, described allocation units, also for:
If definite the second terminal is left described AP equipment, be released to the transmission period of described the second terminal distribution.
9. device as claimed in claim 8, is characterized in that, described allocation units, also for:
After being released to the transmission period of described the second terminal distribution, again for the terminal distribution of the described AP equipment of access, transmit the period.
10. a data transmission device, is characterized in that, comprises transmitting element and receiving element, wherein:
Described transmitting element, for sending access request to access point AP equipment; After described receiving element receives the access response that described AP equipment returns, to described AP equipment, send test data; After described receiving element receives the transmission period that described AP equipment returns, according to the described transmission period to described AP equipment transmission data;
Described receiving element, for receiving described access response and described transmission period.
11. a network equipment, is characterized in that, comprises described data transmission device as arbitrary as claim 7 – 9.
12. a terminal, is characterized in that, comprises data transmission device as claimed in claim 10.
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|---|---|---|---|
| CN2013103473290A CN103458531A (en) | 2013-08-09 | 2013-08-09 | Data transmitting method and relevant device |
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| CN2013103473290A CN103458531A (en) | 2013-08-09 | 2013-08-09 | Data transmitting method and relevant device |
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| CN102883460A (en) * | 2011-07-15 | 2013-01-16 | 中兴通讯股份有限公司 | Service data transmitting method and system |
| CN103096440A (en) * | 2011-11-07 | 2013-05-08 | 中兴通讯股份有限公司 | Wireless information channel access method and system |
| CN103096439A (en) * | 2011-11-07 | 2013-05-08 | 中兴通讯股份有限公司 | Station scheduling method, data transmission method, access control station and station |
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| US20070147284A1 (en) * | 2005-09-21 | 2007-06-28 | Interdigital Technology Corporation | Method and apparatus for transmission management in a wireless communication system |
| US20120087355A1 (en) * | 2010-10-07 | 2012-04-12 | Qualcomm, Incorporated | Methods and devices to implement a reduced contention period to facilitate channel access for access terminals operating in a wireless communication environment |
| CN102883460A (en) * | 2011-07-15 | 2013-01-16 | 中兴通讯股份有限公司 | Service data transmitting method and system |
| CN103096440A (en) * | 2011-11-07 | 2013-05-08 | 中兴通讯股份有限公司 | Wireless information channel access method and system |
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Application publication date: 20131218 |
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