CN102548036B - Based on the wireless sensor network star MANET mode of TDMA - Google Patents
Based on the wireless sensor network star MANET mode of TDMA Download PDFInfo
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- CN102548036B CN102548036B CN201210049122.0A CN201210049122A CN102548036B CN 102548036 B CN102548036 B CN 102548036B CN 201210049122 A CN201210049122 A CN 201210049122A CN 102548036 B CN102548036 B CN 102548036B
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Abstract
The present invention relates to the wireless sensor network star ad hoc network method based on TDMA and system.The technical scheme of this system is: all telegons being in same wireless sensor network use same frequency to carry out work; The telegon that there is co-channel interference (namely having an impact to the proper communication of another telegon during a certain telegon work in wireless sensor network) carries out work by the mode of time division multiple access, when one of them telegon A works time, other telegons that likely interference coordination device A or coordinated device A disturbs quit work; There is not the telegon (namely negligible on the impact of another telegon during a certain telegon work in wireless sensor network) of co-channel interference, can work simultaneously.The present invention can either avoid co-channel interference, can save unnecessary allocated bandwidth again.
Description
Technical field
The present invention relates to wireless sensor network technology, be specifically related to network-building method and the system of wireless sensor network.
Background technology
Wireless sensor network (WirelessSensorNetworks, WSN) started to be widely used in the social all trades and professions such as industry monitoring, intelligent grid, Smart Home, intelligent transportation, public safety, health care, environmental protection at present, be particularly useful for the field that some is inconvenient to connect up, such as the industrial circle such as power high voltage equipment on-line monitoring, slewing vibration online monitoring; Or some often needs the occasion of mobile test, such as commerical test data acquisition system etc.
Take Zigbee as the wireless sensor network of representative, realize the communication between telegon (Coordinator) in wireless sensor network and affiliated terminal equipment (Device) by the networking mode district of CDMA (Code-DivisionMulti-Access) or the communication of straight sequence spread spectrum (Direct-SequenceSpread-Spectrum) and FDMA (Frequency-DivisionMulti-Access).
Be in the wireless sensor network of networking mode with CDMA, adjacent telegon uses same frequency to carry out work, when one of them telegon communicates with affiliated terminal equipment, need to distinguish different telegons by spread spectrum, thus avoid the interference from other telegons and affiliated terminal equipment thereof, therefore:
1) higher wireless bandwidth must be used to realize spread spectrum communication;
2) when the telegon in network and affiliated terminal equipment in communication, need to control by power the co-channel interference that suppresses from other telegons and equipment;
3) transceiver architecture of spread spectrum communication is more complicated, implements very difficult.
Take FDMA as the wireless sensor network of networking mode, adjacent telegon communicates with the terminal equipment belonging to it by using different operating frequencies, thus avoids co-channel interference, thus makes:
1) more wireless bandwidths must be used to distribute to different telegons use;
2) when terminal equipment is when work telegon on a different frequency switches, need additionally to monitor the telegon in the frequency that likely exists, thus result in the expense of unnecessary time and the physics realization of complexity;
3) when certain telegon break down can not work time, terminal equipment belonging to it must adjust operating frequency, is linked into the telegon on other frequencies, and therefore the robustness of network is strong, and self-healing capability is poor.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the invention is to propose one can either avoid co-channel interference, can save again the wireless sensor network star ad hoc network method based on TDMA and the system of unnecessary allocated bandwidth.
Wireless sensor network star ad hoc network method based on TDMA provided by the invention comprises the steps:
A) in same wireless sensor network, multiple telegon is arranged; Each telegon is placed through time division multiple access way and communicates with several terminal equipments belonging to it, is also placed through time division multiple access way and communicates between multiple telegon, and all telegons are all configured such that and carry out work with same frequency;
B) if when one of them telegon works, co-channel interferences are produced to other one or more telegons, during telegon cisco unity malfunction by co-channel interference, then quit work by the telegon of co-channel interference;
C) if wherein there is not co-channel interference between two or more telegon, these telegons that there is not co-channel interference allow in same time work.
As preferably, the network connection architecture of wireless sensor network is star topology.
As preferably, multiple telegon be defined as respectively telegon 1, telegon 2 ..., telegon N; Terminal equipment 11, terminal equipment 12 ..., terminal equipment 1M communicates with telegon 1 respectively, terminal equipment 21, terminal equipment 22 ..., terminal equipment 2X communicates with telegon 2 respectively,, terminal equipment N1, terminal equipment N2 ..., terminal equipment NK communicates with telegon N respectively; If terminal equipment 11 from telegon 1 be switched to communicate with telegon 2 time, the call duration time of terminal equipment 11 is adjusted to the operating time of telegon 2; Wherein, N, M, X, K are the natural number being greater than 0.
Preferred, if when telegon 2 breaks down, and the working signal scope of telegon 1 covers all former terminal equipments communicated with telegon 2, now, operating time of telegon 1 can be set to telegon 2 fault before operating time to replace the function of telegon 2.
Realize the wireless sensor network star self-organizing network system based on TDMA of the above-mentioned network-building method of the present invention, comprising:
Multiple telegon and multiple terminal equipment, multiple telegon is all arranged in same wireless sensor network, each telegon is placed through time division multiple access way and communicates with several terminal equipments belonging to it, also be placed through time division multiple access way between multiple telegon to communicate, all telegons are all configured such that and carry out work with same frequency; If when one of them telegon works, co-channel interferences are produced to other one or more telegons, during telegon cisco unity malfunction by co-channel interference, then quit work by the telegon of co-channel interference; If wherein there is not co-channel interference between two or more telegon, these telegons that there is not co-channel interference allow in same time work.
As preferably, the network connection architecture of wireless sensor network is star topology.
As preferably, multiple telegon be defined as respectively telegon 1, telegon 2 ..., telegon N; Terminal equipment 11, terminal equipment 12 ..., terminal equipment 1M communicates with telegon 1 respectively, terminal equipment 21, terminal equipment 22 ..., terminal equipment 2X communicates with telegon 2 respectively,, terminal equipment N1, terminal equipment N2 ..., terminal equipment NK communicates with telegon N respectively; If terminal equipment 11 from telegon 1 be switched to communicate with telegon 2 time, the call duration time of terminal equipment 11 is adjusted to the operating time of telegon 2; Wherein, N, M, X, K are the natural number being greater than 0.
Preferred, if when telegon 2 breaks down, and the working signal scope of telegon 1 covers all former terminal equipments communicated with telegon 2, now, operating time of telegon 1 can be set to telegon 2 fault before operating time to replace the function of telegon 2.
Compared with prior art, the present invention has following beneficial effect:
Each equipment in wireless sensor network, is communicated by the mode of time-division, avoids co-channel interference and saves unnecessary allocated bandwidth, greatly reducing the requirement to wireless sensor network equipment.Following advantages is had relative to the networking mode of existing CDMA and FDMA mode:
1) occupied bandwidth is narrow, is applicable to network planning optimization, saves radio resource to greatest extent, simplified network plan optimization difficulty;
2) do not need to use spread spectrum communication mode, thus simplified receiver design difficulty;
3) do not need to use TDMA inter-frequency networking, thus simplified receiver design difficulty;
4) what the terminal equipment simplifying wireless sensor network moved to another telegon from a telegon realizes difficulty;
5) networking mode possesses self-healing function, provides better robustness when telegon fault.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wireless sensor network star self-organizing network system based on TDMA of present pre-ferred embodiments.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the present invention is described further, understands the present invention's technological thought required for protection so that clearer.
It take TDMA as the wireless sensor network of networking mode that the present embodiment proposes a kind of, each equipment in this wireless sensor network, communicated by the mode of time-division, avoid co-channel interference and save unnecessary allocated bandwidth, greatly reducing the requirement to wireless sensor network equipment.
The wireless sensor network star ad hoc network method based on TDMA that the present embodiment provides comprises the steps:
A) in same wireless sensor network, multiple telegon is arranged; Each telegon is placed through time division multiple access way and communicates with several terminal equipments belonging to it, is also placed through time division multiple access way and communicates between multiple telegon, and all telegons are all configured such that and carry out work with same frequency;
B) if when one of them telegon works, co-channel interference is produced to other one or more telegons, during telegon cisco unity malfunction by co-channel interference, then quit work by the telegon of co-channel interference, that is, when by the telegon of co-channel interference, co-channel interference be also not enough to affect its normally work time, still can be used by the telegon of co-channel interference;
C) if wherein there is not co-channel interference between two or more telegon, these telegons that there is not co-channel interference allow in same time work.
In said method, the network connection architecture of wireless sensor network is star topology.
As shown in Figure 1, the present embodiment also proposed a kind of wireless sensor network star self-organizing network system based on TDMA realizing said method, it comprises five telegons and 21 terminal equipments, these five telegons are designated as telegon 1 respectively, telegon 2, telegon 3, telegon 4, telegon 5, these 21 terminal equipments are designated as terminal equipment 11 respectively, terminal equipment 12, terminal equipment 13, terminal equipment 14, terminal equipment 15, terminal equipment 21, terminal equipment 22, terminal equipment 23, terminal equipment 24, terminal equipment 31, terminal equipment 32, terminal equipment 33, terminal equipment 34, terminal equipment 35, terminal equipment 36, terminal equipment 41, terminal equipment 42, terminal equipment 43, terminal equipment 51, terminal equipment 52, terminal equipment 53.These five telegons are all arranged in same wireless sensor network, each telegon is placed through time division multiple access way and communicates with several terminal equipments belonging to it, and namely terminal equipment 11, terminal equipment 12, terminal equipment 13, terminal equipment 14, terminal equipment 15 all only communicate with telegon 1; Terminal equipment 21, terminal equipment 22, terminal equipment 23, terminal equipment 24 all only communicate with telegon 2; Terminal equipment 31, terminal equipment 32, terminal equipment 33, terminal equipment 34, terminal equipment 35, terminal equipment 36 all only communicate with telegon 3; Terminal equipment 41, terminal equipment 42, terminal equipment 43 all only communicate with telegon 4; Terminal equipment 51, terminal equipment 52, terminal equipment 53 all only communicate with telegon 5.Also be placed through time division multiple access way between these five telegons to communicate, all telegons are all configured such that and carry out work with same frequency, and namely these five telegons all work on the same frequency.
If when one of them telegon works, co-channel interferences are produced to other one or more telegons, during telegon cisco unity malfunction by co-channel interference, then quit work by the telegon of co-channel interference; If wherein there is not co-channel interference between two or more telegon, these telegons that there is not co-channel interference allow in same time work.Concrete, can see Fig. 1, when telegon 1 works, its coverage 100 has covered telegon 2, telegon 3, telegon 4, telegon 5 and the terminal equipment belonging to it 11, terminal equipment 12, terminal equipment 13, terminal equipment 14, terminal equipment 15; When telegon 2 works, its coverage 200 covers telegon 3 and the terminal equipment belonging to it 21, terminal equipment 22, terminal equipment 23, terminal equipment 24; When telegon 3 works, its coverage 300 only covers terminal equipment 31, terminal equipment 32, terminal equipment 33, terminal equipment 34, terminal equipment 35, terminal equipment 36 belonging to it; When telegon 4 works, its coverage 400 only covers terminal equipment 41, terminal equipment 42, terminal equipment 43 belonging to it; When telegon 5 works, its coverage 500 covers terminal equipment 51, terminal equipment 52, terminal equipment 53 belonging to it.That is, when telegon 1 works, co-channel interference can be produced to telegon 2, telegon 3, telegon 4, telegon 5, when telegon 1 and its corresponding device (namely in terminal equipment 11, terminal equipment 12, terminal equipment 13, terminal equipment 14, terminal equipment 15 any one) communicate, telegon 2, telegon 3, telegon 4, telegon 5 all do not work; When in telegon 2, telegon 3, telegon 4, telegon 5 and affiliated terminal equipment in communication, telegon 1 does not work; Because telegon 2 and telegon 5 do not produce co-channel interference, telegon 2 and telegon 5 allow in same time work.
If terminal equipment 33 needs to be switched to during telegon 2 from telegon 3, (terminal equipment 33 stops and the communication of telegon 3, start to communicate with telegon 2, terminal equipment 33 becomes the corresponding device of telegon 2), only the call duration time of terminal equipment 33 need be adjusted to the operating time of telegon 2, and do not need the operating frequency of switching terminal equipment 33, the requirement of equipment de-sign is greatly reduced.
In addition, as shown in Figure 1, the working signal scope (i.e. coverage 100) of telegon 1 can cover all terminal equipments communicated with telegon 3, when telegon 3 breaks down, the operating time of telegon 1 can be set to the operating time before telegon 3 fault, to replace the function of telegon 3, thus complete the self-repair function of wireless sensor network.
The network connection architecture of the wireless sensor network of the present embodiment can adopt star topology, namely terminal equipment 11, terminal equipment 12, terminal equipment 13, terminal equipment 14, terminal equipment 15 only communicate with telegon 1, determined by telegon 1 to process the thing that will do, if terminal equipment 11 needs to transmit data to terminal equipment 23, terminal equipment 11 can arrive data and send to telegon 1, then telegon 2 is forwarded the data to by telegon 1, by telegon 2, data are sent to terminal equipment 23 again, so analogize.
In addition, the present embodiment is only an application example of the present invention, does not cause and restricts the coverage of the quantity of telegon, the quantity of terminal equipment and telegon.
Of the present inventionly to be at all:
1) all telegons being in same wireless sensor network use same frequency to carry out work;
2) telegon that there is co-channel interference (namely having an impact to the proper communication of another telegon during a certain telegon work in wireless sensor network) carries out work by the mode of time division multiple access, when one of them telegon A works time, other telegons that likely interference coordination device A or coordinated device A disturbs quit work;
3) there is not the telegon (namely negligible on the impact of another telegon during a certain telegon work in wireless sensor network) of co-channel interference, can work simultaneously.
That is, on the basis meeting wireless transmission requirement, two telegons of adjacent space can use identical timeslice work (namely these two telegons allow in same time work), like this, not only maximize and employ frequency spectrum resource, improve covering power, also save transmitter power simultaneously, reduce power consumption, extending battery life.
For a person skilled in the art, according to technical scheme described above and design, other various corresponding change and distortion can be made, and all these change and distortion all should belong within the protection range of the claims in the present invention.
Claims (4)
1., based on the wireless sensor network star ad hoc network method of TDMA, it is characterized in that, comprise the following steps:
A) in same wireless sensor network, multiple telegon is arranged; Each telegon is placed through time division multiple access way and communicates with several terminal equipments belonging to it, is also placed through time division multiple access way and communicates between multiple telegon, and all telegons are all configured such that and carry out work with same frequency;
B) if when one of them telegon works, co-channel interferences are produced to other one or more telegons, during telegon cisco unity malfunction by co-channel interference, then quit work by the telegon of co-channel interference;
C) if wherein there is not co-channel interference between two or more telegon, these telegons that there is not co-channel interference allow in same time work;
Multiple telegon be defined as respectively telegon 1, telegon 2 ..., telegon N; Terminal equipment 11, terminal equipment 12 ..., terminal equipment 1M communicates with telegon 1 respectively, terminal equipment 21, terminal equipment 22 ..., terminal equipment 2X communicates with telegon 2 respectively,, terminal equipment N1, terminal equipment N2 ..., terminal equipment NK communicates with telegon N respectively; If terminal equipment 11 from telegon 1 be switched to communicate with telegon 2 time, the call duration time of terminal equipment 11 is adjusted to the operating time of telegon 2; Wherein, N, M, X, K are the natural number being greater than 0;
If when telegon 2 breaks down, and the working signal scope of telegon 1 covers all former terminal equipments communicated with telegon 2, now, operating time of telegon 1 can be set to telegon 2 fault before operating time to replace the function of telegon 2.
2., as claimed in claim 1 based on the wireless sensor network star ad hoc network method of TDMA, it is characterized in that, the network connection architecture of wireless sensor network is star topology.
3. based on the wireless sensor network star self-organizing network system of TDMA, comprise multiple telegon and multiple terminal equipment, it is characterized in that, multiple telegon is all arranged in same wireless sensor network, each telegon is placed through time division multiple access way and communicates with several terminal equipments belonging to it, also be placed through time division multiple access way between multiple telegon to communicate, all telegons are all configured such that and carry out work with same frequency; If when one of them telegon works, co-channel interferences are produced to other one or more telegons, during telegon cisco unity malfunction by co-channel interference, then quit work by the telegon of co-channel interference; If wherein there is not co-channel interference between two or more telegon, these telegons that there is not co-channel interference allow in same time work; Multiple telegon be defined as respectively telegon 1, telegon 2 ..., telegon N; Terminal equipment 11, terminal equipment 12 ..., terminal equipment 1M communicates with telegon 1 respectively, terminal equipment 21, terminal equipment 22 ..., terminal equipment 2X communicates with telegon 2 respectively,, terminal equipment N1, terminal equipment N2 ..., terminal equipment NK communicates with telegon N respectively; If terminal equipment 11 from telegon 1 be switched to communicate with telegon 2 time, the call duration time of terminal equipment 11 is adjusted to the operating time of telegon 2; Wherein, N, M, X, K are the natural number being greater than 0; If when telegon 2 breaks down, and the working signal scope of telegon 1 covers all former terminal equipments communicated with telegon 2, now, operating time of telegon 1 can be set to telegon 2 fault before operating time to replace the function of telegon 2.
4., as claimed in claim 3 based on the wireless sensor network star self-organizing network system of TDMA, it is characterized in that, the network connection architecture of wireless sensor network is star topology.
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| CN109039756A (en) * | 2018-08-20 | 2018-12-18 | 珠海格力电器股份有限公司 | Wireless network control system and fault repairing method thereof |
| CN109065048A (en) * | 2018-09-12 | 2018-12-21 | 深圳市卓翼科技股份有限公司 | Sound control method and device |
| CN109245934B (en) * | 2018-09-25 | 2021-10-15 | 珠海格力电器股份有限公司 | Fault processing method, device, system, control equipment and management equipment |
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| CN101908997B (en) * | 2010-08-27 | 2011-11-16 | 重庆大学 | Airport environment monitoring method based on wireless sensor network |
| CN102340819B (en) * | 2011-09-19 | 2014-10-08 | 中国科学院深圳先进技术研究院 | Conflict-free transmission method and system of sensor network |
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| 《Adaptive Distributed Randomized TDMA Scheduling For Clustered Wireless Sensor Networks》;Shihan Li,等;《Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. 》;20070925;第III节 * |
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