CN102256376A - Low-delay large-capacity wireless sensor network technology based on transmission collision detection - Google Patents
Low-delay large-capacity wireless sensor network technology based on transmission collision detection Download PDFInfo
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- CN102256376A CN102256376A CN2010101775042A CN201010177504A CN102256376A CN 102256376 A CN102256376 A CN 102256376A CN 2010101775042 A CN2010101775042 A CN 2010101775042A CN 201010177504 A CN201010177504 A CN 201010177504A CN 102256376 A CN102256376 A CN 102256376A
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Abstract
The invention discloses a low-delay large-capacity wireless sensor network technology based on transmission collision detection, belonging to the field of information technology and used for realizing collision avoidance and low-delay large-capacity wireless sensing. The technology comprises the following points: collision detection signals can be transmitted in a pulse signaling mode and can be transmitted only in a signaling pathway; data frames can be transmitted only in a data pathway; when a data frame is sent to the data pathway, multiple pulse signalings are sent to the signaling pathway; in a pulse dormant period, whether other pulse signalings exist in the signaling pathway is detected; if other pulse signaling is detected, the transmission of the data frames in the data pathway is stopped. The technology provided by the invention can be widely applied to wireless transmission; if the low-energy-consumption short-distance and small-sized sensing system technology and the 3G mobile broadband technology can be combined, an AnyThings-connection environmental protection intelligent internet of things consisting of environmental protection equipment used for environmental protection monitoring and living environment perceiving can be formed.
Description
Technical field
The present invention relates to areas of information technology, relate in particular to a kind of low method that postpones jumbo wireless biography network that realizes.
Background technology
Requiring low to postpone, in the jumbo wireless sensor network, existing radio data system, as WLAN (wireless local area network) etc., its mac-layer protocol all is based on the wireless data transmission conflict and avoids (collision avoidance) technology.Like this, when conflict averts failure, can not detect the signal that causes interfering with each other that conflicts thereby signal source that interferes with each other or data send the source and still will occupy communication path, but in fact the data receiver can't understand such Frame that disturbs that has been subjected to up to the full frame end of transmission.
Prior art fails to realize as the collision detection in the wired ethernet (Ethernet) (collision detection) technology.Therefore, collision avoidance technique the unsolved problem that stops invalid frame transmission immediately caused the waste of communication bandwidth, thereby give lowly postpone, the realization of jumbo wireless sensor network brought difficulty fundamentally.
Therefore, develop a kind of low delay, big capacity radio sensing network technology, thereby realize that it is current existence and urgent problem that conflict is avoided.
Summary of the invention
For remedying the deficiencies in the prior art, the object of the invention provides a kind of big capacity radio sensing network of low delay technology that detects based on transmission collision, realizes conflicting and avoids.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of big capacity radio sensing network of low delay technology that detects based on transmission collision is characterized in that, comprises: the collision detection signal only transmits in signaling channel with the transmission of pulse signaling method; Frame only transmits in data path; When this Frame of transmission is in data path, send a plurality of pulse signalings in signaling channel; During rest period, detect in the signaling channel whether have other pulse signalings in pulse; If detect other pulse signalings, then stop the data frame transfer in the data path.
In one of them embodiment of the present invention, the result of two collisions of pulses is the pulse signals that still can be understood.
In another one embodiment of the present invention, the result of two Frame conflicts is the Frames that can't be understood.
Beneficial effect of the present invention:
Application the present invention can realize the collision detection (collision detection) in the wireless data transmission, thereby can realize low delay, jumbo wireless sensor network.
The sensor-based system technology of low energy consumption, short distance, small size is combined with 3G mobile broadband technology, can form the environmental protection wisdom Internet of Things that the environmental protection equipment thing thing of an environment monitoring and living environment perception links.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below further set forth the present invention.
The invention provides a kind of big capacity radio sensing network of low delay technology that detects based on transmission collision, employing is based on the technology of pulse signaling, the collision detection signal transmits with the pulse signaling method, the pulse signaling method is meant: the collision detection signal only transmits in signaling channel with the form of pulse, and Frame only transmits in data path.
A pulse was made up of active period and rest period, wherein active period length fix and rest period length at random.
Each signal source or data send the source when transmission one frame data are in data path, send a plurality of pulse signalings in signaling channel, and detect whether there are other pulse signalings in the signaling channel during rest period in pulse.
If detect other pulse signalings, then stop the data frame transfer in the data path at once.
The result of two collisions of pulses is the pulse signals that still can be understood, and the result of two Frame conflicts then is the Frame that can't be understood.
Thus, realize the collision detection in the wireless data transmission (collision detection), thereby can realize low delay, jumbo wireless sensor network.
The sensor-based system technology of low energy consumption, short distance, small size is combined with 3G mobile broadband technology, can form the environmental protection wisdom Internet of Things that the environmental protection equipment thing thing of an environment monitoring and living environment perception links.
Claims (3)
1. the big capacity radio sensing network of a low delay technology that detects based on transmission collision is characterized in that, comprises:
The collision detection signal only transmits in signaling channel with the transmission of pulse signaling method;
Frame only transmits in data path;
When this Frame of transmission is in data path, send a plurality of pulse signalings in signaling channel;
During rest period, detect in the signaling channel whether have other pulse signalings in pulse;
If detect other pulse signalings, then stop the data frame transfer in the data path.
2. a kind of big capacity radio sensing network of low delay technology that detects based on transmission collision according to claim 1 is characterized in that the result of two collisions of pulses is the pulse signals that still can be understood.
3. a kind of big capacity radio sensing network of low delay technology that detects based on transmission collision according to claim 1 is characterized in that the result of two Frame conflicts then is the Frame that can't be understood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101775042A CN102256376A (en) | 2010-05-18 | 2010-05-18 | Low-delay large-capacity wireless sensor network technology based on transmission collision detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101775042A CN102256376A (en) | 2010-05-18 | 2010-05-18 | Low-delay large-capacity wireless sensor network technology based on transmission collision detection |
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| CN102256376A true CN102256376A (en) | 2011-11-23 |
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| CN2010101775042A Pending CN102256376A (en) | 2010-05-18 | 2010-05-18 | Low-delay large-capacity wireless sensor network technology based on transmission collision detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11025725B2 (en) | 2015-09-01 | 2021-06-01 | 3M Innovative Properties Company | Providing safety related contextual information in a personal protective equipment system |
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2010
- 2010-05-18 CN CN2010101775042A patent/CN102256376A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11025725B2 (en) | 2015-09-01 | 2021-06-01 | 3M Innovative Properties Company | Providing safety related contextual information in a personal protective equipment system |
| US11330062B2 (en) | 2015-09-01 | 2022-05-10 | 3M Innovative Properties Company | Providing safety related contextual information in a personal protective equipment system |
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Application publication date: 20111123 |