CN108289322A - The low power loss communication algorithm of WSN collection terminals and gateway - Google Patents
The low power loss communication algorithm of WSN collection terminals and gateway Download PDFInfo
- Publication number
- CN108289322A CN108289322A CN201710023561.7A CN201710023561A CN108289322A CN 108289322 A CN108289322 A CN 108289322A CN 201710023561 A CN201710023561 A CN 201710023561A CN 108289322 A CN108289322 A CN 108289322A
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- China
- Prior art keywords
- gateway
- ack
- collection terminal
- collection
- wsn
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
- H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of low power loss communication algorithms for WSN collection terminals and gateway.The algorithm works in following network：Several collection terminals and a gateway form star network.The long-term suspend mode of collection terminal, does not maintain the connection with gateway, and when needing, collection terminal wakes up and gateway communication --- and transmitting, ACK, receives ACK at reception.Gateway is in suspend mode --- reception --- suspend mode such a period.Core concept is exactly to improve the duty ratio of less radio-frequency work, more in suspend mode to reduce power consumption.
Description
Technical field
The present invention is suitable for the WSN networks of low-speed communication, not high to requirement of real-time.It is applicable to 433MHz, 2.4GHz
Etc. the super low-power consumptions of frequency ranges, low discharge, high latency wireless communication.
Background technology
With the development of technology of Internet of things, the various cordless communication network standards such as ZigBee, bluetooth, 433Mhz, LoRA are equal
A large amount of practice is obtained.In actual items implementation, it has been found that in WSN networkings, for collection terminal, various radio frequency cores
The nominal low-power consumption of piece can be simply obtained realization.
However, gateway end (calling receiving terminal in the following text), since receiving terminal needs persistently to receive work to ensure that collection terminal is arbitrary
Time data can report, this results in low-power consumption that can not implement, in the case where no supply of electric power can only use battery, i.e.,
Make, plus measures (if too high using big solar panels or windmill cost) such as solar energy, wind-power electricity generations, to cannot guarantee that battery
Good replacement cycle (should generally promise to undertake 3 years).
In order to effectively solve problem above, while hardware limit means, it would be desirable to be gateway (receiving terminal)
Better firmware program is designed power consumption is greatly reduced, certainly, corresponding collection terminal will be also designed accordingly.
Invention content
The present invention is to solve the power problems of WSN gateway by driver (firmware) means so that gateway is not having
Electric power only has under the support of the charging equipments such as miniature solar energy or wind-force, can substantially extend battery replacement cycle, reduces user
Use cost, improve the practicability of product.
In order to solve the above technical problems, the present invention provides a kind of for the calculation of the low power loss communication of WSN collection terminals and gateway
Method.It is received including collection terminal transmitting, WSN gateway, WSN gateway transmitting ACK, collection terminal receive ACK.
Description of the drawings
Fig. 1 is algorithm schematic diagram；Fig. 2 is receiving terminal work period waveform；Fig. 3 is Algorithm Analysis figure
Specific implementation mode
The following detailed description of the programming process of the present invention.
Referring initially to the work period waveform of receiving terminal (see Fig. 2)：
It is primary to receive the duration that state is kept and be assuming that the when a length of t1 that dormant state of receiving terminal is kept, at two
Phase forms a complete period, is denoted as T=t1+t2；When collection terminal enters the work period, it is necessary to assure the transmitting of collection terminal
Moment includes just that such transmitting terminal must repeatedly be emitted in a certain any time, form a kind of work period by t2
Waveform, wave crest are covered by t2, if the time for starting to be emitted to successful launch (MCU interruption generation) is denoted as t ', t '
More preferably less than t2/2 can allow t2 to cover t ' twice in this way, improve transmitting terminal hit rate.Meanwhile designing enough t '
Number is N so that t ' × N >=T.By suitably designing so that t ' is slightly less than t2/2, can acquire N=immediately from Fig. 3
8 be its optimum value.
Move the initial position of transmitted waveform anyway as can be seen from Figure 3, total energy ensures that transmitting wave crest is comprised in
T2 is received in the period, that is to say, that no matter when starts to emit signal, total energy receiving end receives signal.
It considers further that transmitting ACK and receives the mode of ACK, the arbitrary T (t1+t2) of receiving terminal starts, when starting relative to t2
It carves, at t2 ', after receiving terminal receives data, is immediately finished the current work period, initially enter the transmitting ACK periods, notice is adopted
Collect end to complete this communication；Just terminate transmit cycle after emitting n times in view of acquisition, then collection terminal receives the starting of ACK
Moment is the latest t2 '+N × t ', is earliest t2 '+t '.
We are for the purpose of reducing power consumption, therefore receiving terminal starts to emit ACK using the moment the latest as standard, very along with one
Small delay d, when guarantee starts to emit ACK, collection terminal is centainly in and receives ACK states.Thus obtain the emission time of ACK
For t2 '+N × t '+d, battery has fired at the time of is (t2 '+N × t ')+d+ (t ' × 3)；When actual program, the emission time of ACK
To receive N × t '+d after data.
Assuming that the time span that collection terminal receives ACK is T ', collection terminal will be calculated with earliest ACK emission times, that
T ' ＞ (N × t ')+d+ (t ' × 3), we finally obtain algorithmic descriptions schematic diagram 3 (see Figure of description).
Summarize algorithm：
No matter collection terminal or receiving terminal transmitting a length of t ' when (interrupting and occur) from start to end；
Receiving terminal dormancy time is t1, receiving time t2, and t ' ＜ t2/2；
When collection terminal emits signal, emit n times, N=8 (magnitude relationship for depending on t ' and t2/2) in this example design；
After receiving terminal receives data, delay N × t '+d (d can be sufficiently small, to reduce T ') emit continuous ACK three times afterwards；
After collection terminal emits n times signal, immediately enters and receive state and continue T ' so that T ' ＞ (N × t ')+d+ (t ' × 3),
T ' values should suitably ought avoid greatly including the period of ACK, reduce power consumption again.
Claims (2)
1. the invention discloses a kind of low power loss communication algorithm for WSN collection terminals and gateway, it is by greatly improving radio frequency
The duty ratio of chip is realized with unique transmitting/reception work wave is designed.
2. algorithm as described in claim 1, it is characterised in that；Collection terminal uses to adapt to the work period waveform of gateway
Special transmit cycle algorithm.It efficiently solving, gateway necessarily is in the excessively high problem of power consumption caused by reception operating conditions,
Power consumption is being greatly reduced while ensuring data receiver, gateway after receiving the data, according to the collection terminal transmit cycle of setting, rationally
Arrangement ACK transmit cycles, ensure that collection terminal can receive ACK, while collection terminal receives week according to transmit cycle and gateway
Phase calculates the rational reception ACK periods, ensures that the ACK of gateway transmitting can be received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710023561.7A CN108289322A (en) | 2017-01-09 | 2017-01-09 | The low power loss communication algorithm of WSN collection terminals and gateway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710023561.7A CN108289322A (en) | 2017-01-09 | 2017-01-09 | The low power loss communication algorithm of WSN collection terminals and gateway |
Publications (1)
| Publication Number | Publication Date |
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| CN108289322A true CN108289322A (en) | 2018-07-17 |
Family
ID=62819553
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710023561.7A Pending CN108289322A (en) | 2017-01-09 | 2017-01-09 | The low power loss communication algorithm of WSN collection terminals and gateway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113347591A (en) * | 2021-08-05 | 2021-09-03 | 四川省公路规划勘察设计研究院有限公司 | LoRa gateway, control method and field engineering structure monitoring system |
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