CN107018567A - A kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data - Google Patents
A kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data Download PDFInfo
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- CN107018567A CN107018567A CN201710204699.7A CN201710204699A CN107018567A CN 107018567 A CN107018567 A CN 107018567A CN 201710204699 A CN201710204699 A CN 201710204699A CN 107018567 A CN107018567 A CN 107018567A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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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
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Abstract
The invention discloses a kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data, including：(1), the packet for needing to transmit is loaded into transmission caching, and closed node Address Recognition function by sending node, turns to step (2)；(2), sending node persistently intercepts channel for a period of time, and the result for intercepting channel is analyzed；(3), the result that channel is intercepted according to step (2) judge in channel whether only one of which sending node, if there is more than one sending node, random back turns to step (2) for a period of time；Otherwise, the sending node is designated as synchronization node, turns to step (4)；(4), transmission gating command is called to start to send packet in being grouped at the SFD trailing edge interruptions produced at this node for synchronization node transmission.The present invention sends the time of packet using hardware interrupts synchronization node, and extra synchronization overhead is not carried out but not to Netowrk tape, channel utilization is also improved, and then improve network throughput.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of wireless sensor and actor networks interior joint concurrently-transmitted data
Method.
Background technology
Wireless sensor network is by being distributed in the wireless senser for being used for monitoring and collect valuable information in certain area
Node is constituted.Under normal circumstances, wireless network of the data by internode collaboration formation is finally transmitted to aggregation node.Due to nothing
Line transmission is based on shared channel, therefore when node sends the media access control protocol that packet depends on using, i.e. MAC associations
View.Current MAC protocol mainly has two classes：Carrier Sense Multiple Access control protocol CSMA and time division multiple access protocol TDMA.
CSMA is a kind of agreement based on competition, and a node is intercepted channel, sent if channel idle first before sending；If channel
Busy, then random back is intercepting channel after for a period of time.The advantage of CSMA agreements is that agreement is simple, but handling capacity is low.TDMA
Agreement divides time into time slot, by distributing the time slot that each node is used, it is to avoid the generation of conflict.The advantage of TDMA agreements is
Higher handling capacity can be obtained.But TDMA requires that the whole network is synchronous, it is thus possible to very big scheduling overhead can be produced.
In order to increase handling capacity, the reduction Network Transmission Delays of network, the most of concurrent transmission mechanism designed at present are past
It is past to make multiple sending nodes while accessing channel, i.e., multiple sending node concurrently-transmitted datas.But existing concurrent transmission agreement exists
When whether decision node accesses channel, the influence of transimission power is only only accounted for, that is, requires that the reception that is grouped in that node is sent is saved
Signal Interference and Noise Ratio SINR at point meets certain requirement.In fact, the usually used chip of sensor node, such as
CC2420, when receiving packet, can pass through synchronizing process first, once some packet of successful synchronization, will not synchronous other points
Group, even if the rear signal intensity to packet is especially big.Therefore, when designing concurrent transmission method, in addition it is also necessary to consider how control section
Point sends the time of packet.
The content of the invention
In view of the deficiencies in the prior art, the technical problems to be solved by the invention are to consider the basis of packet transmission time
On, can be in network node simultaneously with reference to hardware interrupts there is provided a kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data
The handling capacity of network is improved under conditions of hair transmission.
To achieve the above object, the invention provides a kind of side of wireless sensor and actor networks interior joint concurrently-transmitted data
Method, it is characterised in that comprise the following steps：
(1) packet for needing to transmit is loaded into transmission caching by sending node, and closes Address Recognition function, turns to step
Suddenly (2)；
(2) sending node persistently intercepts channel for a period of time, and the result for intercepting channel is analyzed.If listening to
As a result channel idle is shown, then starts to continuously transmit packet to its receiving node；If channel busy and not receiving packet, at random
Keep out of the way and intercept channel after a period of time again；Otherwise step (3) is turned to；
(3) result that channel is intercepted according to step (2) judge in channel whether only one of which sending node, if existing more than
One sending node, then random back turn to step (2) for a period of time；Otherwise, the sending node is designated as synchronization node, turned to
Step (4)；
(4) the call gate order at the SFD trailing edge interruptions produced at this node that is grouped in sent in synchronization node is opened
Originate and send packet.
A kind of method of above-mentioned wireless sensor and actor networks interior joint concurrently-transmitted data, it is characterised in that the step
(2) it is specially：
(21) node periodically detects CCA pins, judges whether channel is idle；
(22) intercepted under nodes records and the packet that other nodes are sent is received in channel time, and therefrom extract the packet
Source node number；Wherein step (21) (22) is carried out simultaneously；Intercept channel and terminate rear steering step (23)；
(23) if during CCA pins are detected, at least in the presence of a channel busy, and not receiving any packet, then result
For channel busy, random back intercepts channel again after for a period of time；Otherwise step (3) is turned to.
A kind of method of above-mentioned wireless sensor and actor networks interior joint concurrently-transmitted data, it is characterised in that the step
(4) it is specially：
(41) order caching threshold value is set as 5, node continues to a packet, the order caching produced in the packet is hard
The source address information for receiving packet is read at part；
(42) judge whether the source address information in (41) is equal with the synchronization node number that step (3) is recorded, if equal,
This is grouped in call gate order at the SFD trailing edge interruptions of this node place generation and starts to send packet, continues afterwards with most fast
Speed to its receiving node send be grouped.
A kind of method of above-mentioned wireless sensor and actor networks interior joint concurrently-transmitted data, it is characterised in that：It is described to send
Node and receiving node are but are not limited to CC2420 chips.
The beneficial effects of the invention are as follows：
1st, the present invention still transmission packe in channel busy, improves the handling capacity of channel utilization and network.It is on the one hand
Guarantee will not be impacted to existing transmission link, on the other hand ensure that new receiving node can be properly received it and send section
The packet that point is sent.
2nd, the present invention sends the time of packet using hardware interrupts come synchronization node.This method of synchronization is not but not to net
Network brings extra synchronization overhead, also improves the utilization rate of channel, improves the handling capacity of network.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is implementation process figure of the invention.
Fig. 2 is IEEE802.14.5 standard frame format schematic diagram.
Fig. 3 is SFD pin level change schematic diagrams when node receives and dispatches packet.
Fig. 4 is that node sends packet flow chart
Fig. 5 is that typical two of 4 nodes interfere concurrent transmission link network schematic diagram.
Fig. 6 is the experimental result picture under example scenario.
Embodiment
With reference to the accompanying drawings and examples to the detailed description of the invention.
As shown in figure 1, a kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data, it is characterised in that including
Following steps：
(1) packet for needing to transmit is loaded into transmission caching by sending node, and closes Address Recognition function, turns to step
Suddenly (2)；
(2) sending node persistently intercepts channel for a period of time, and the result for intercepting channel is analyzed.If listening to
As a result channel idle is shown, then starts to continuously transmit packet to its receiving node；If channel busy and not receiving packet, at random
Keep out of the way and intercept channel after a period of time again；Otherwise step (3) is turned to；
(3) result that channel is intercepted according to step (2) judge in channel whether only one of which sending node, if existing more than
One sending node, then random back turn to step (2) for a period of time；Otherwise, the sending node is designated as synchronization node, turned to
Step (4)；
(4) synchronization node transmission be grouped at this node produce SFD trailing edge interruptions at call gate order open
Originate and send packet.
In the present embodiment, the step (2) is specially：
(21) node periodically detects CCA pins, judges whether channel is idle；
(22) packet that the other nodes received in channel this period are sent is intercepted under nodes records, and is therefrom extracted
The source node number of the packet；Wherein step (21) (22) is carried out simultaneously；Intercept channel and terminate rear steering step (23)；
(23) if during CCA pins are detected, at least there is one-time detection result and show channel busy, and do not receive any
Packet, then result is channel busy, and random back intercepts channel again after for a period of time；Otherwise step (3) is turned to.
In the present embodiment, the step (4) is specially：
(41) order caching threshold value is set as 5, node continues to a packet, the order caching produced in the packet is hard
Part interrupts the source address information for being read at FIFOP and receiving packet；
(42) judge whether the source address information in (41) is equal with the synchronization node number that step (3) is recorded, if equal,
This is grouped in call gate order at the SFD trailing edge interruptions of this node place generation and starts to send packet, continues afterwards with most fast
Speed to its receiving node send be grouped.
In the present embodiment, the sending node and receiving node are but are not limited to CC2420 chips.
Following embodiment is used to illustrate the present invention, but is not limited to the scope of application of the present invention.
The present invention is applied to wireless sensor network.Sensor node transmit data when more use unicast form, i.e.,
One receiving node of each sending node correspondence.Sensor node has a function of two kinds of Address Recognitions, i.e., software address identification and
Hardware address is recognized.Packet hardware and software Address Recognition that and if only if by when, can be just properly received by destination node.Section
IEEE802.15.4 standard frame format is deferred in the packet that point is sent.The standard frame lattice schematic diagram reference picture 2, it is comprising synchronous
Head SFD, PHY head, MAC protocol head, MAC protocol load, five parts of MAC protocol tail, wherein, synchronous head is included again
Targeting sequencing and frame sequence in fact；PHY head includes frame length；MAC protocol head includes frame control domain, data sequence number
And address information；MAC protocol load is loaded comprising content for frame；MAC protocol tail is frame detection sequence comprising content.Sensor section
Point is when receiving packet, process that first can be Jing Guo packet synchronization, once some is grouped on successful synchronization, then will not resynchronize times
What he is grouped, until same the end of the step.
SFD (Start of Frame Delimiter) is that IEEE802.15.4 frames start to define symbol.As shown in figure 3, working as
The SFD domains that sensor node will receive and dispatch packet have been received and dispatched, and SFD signals are uprised by low, and continue to that packet transmitting-receiving is finished.SFD
Hardware capture is capture of the hardware to SFD signals.When SFD level changes, the interrupt function in upper procedure can quilt
Triggering, can now obtain the timestamp that SFD level changes moment in upper layer functions.Because hardware capture interruption logging when
Between stab be not related to software capture logging timestamp time, so SFD hardware capture eliminate communication process transmission delay and
Processing delay.If propagation delay can be ignored, it is considered that transmitting-receiving node SFD pin levels change timestamp be
Synchronization.That is in Fig. 3, the SFD pin level synchronization saltus steps of sending node and receiving node.
Each sensor node has two buffer areas for being used to send and receive data in network, respectively sends caching
And order caching.As shown in figure 4, when sensor node needs to send packet, needing the packet being loaded into transmission caching first
In, call transmission gating command to transmit it out afterwards.Found by testing measurement：Packet is loaded into needed for transmission caching
Time be more than packet from sending the time that caching is sent to needed for channel.Therefore, sensor node sends a packet reality
The required time is often greater than twice of the packet transfer delay.
Embodiment：
Fig. 5 is the network of a typical interfering link concurrent transmission.As shown in figure 5, two link l interfered1=
S1,R1、l2=S2,R2.Wherein, node S1S2Need respectively to node R1R2Continuously transmit 50 packets.Node S1Firstly the need of hair
After sending packet, 100 milliseconds, node S2Need to send and be grouped.
The specific steps of the present invention are illustrated below according to Fig. 1.
Node S1Node address identification function is first shut off, starts simultaneously at and intercepts after 50 milliseconds of channel, and periodically examine
Survey CCA.Intercept after channel terminates, because no node is in transmission packe, obtain the result of channel idle, node S1Immediately begin to
With most fast speed to node R1Continuously transmit packet.After 50 milliseconds, with node S1, node S2It is first shut off node address identification
Function, begins listening for after 50 milliseconds of channel.In node S2Intercept in channel time, it receives node S1The packet of transmission.Node
S2Intercept after channel terminates, obtain at least half of detection channel result and be shown as channel idle, and node S2Node is only received
S1The packet of transmission.Therefore present channel, only node S1Sending packet.Node S2FIFOP threshold value is set needed for receiving
For 5, same season node S1It is set to synchronization node.Afterwards, node S2A packet can be received, and in FIFOP caused by the packet
Disconnected place reads the source node number of the packet from order caching, it is known that, source node number is S1.Therefore the SFD produced in the packet
Transmission gating command is called to send packet at trailing edge interruption.
Fig. 6 is the experimental result under Fig. 5 scenes, and wherein abscissa represents that sending node sends the length of packet, ordinate
It is the handling capacity of system.From fig. 6, it can be seen that using the system throughput in the case of obtained both links concurrent transmission of the invention
Measure as twice of wall scroll chain-circuit system handling capacity under noiseless situation.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (4)
1. a kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data, it is characterised in that comprise the following steps：
(1) packet for needing to transmit is loaded into transmission caching by sending node, and closed node Address Recognition function, turns to step
Suddenly (2)；
(2) sending node persistently intercepts channel for a period of time, and the result for intercepting channel is analyzed.If intercepting the knot of channel
Fruit shows channel idle, then starts to send packet；If channel busy and not receiving any packet, random back for a period of time after
Again channel is intercepted；Otherwise step (3) is turned to；
(3) result that channel is intercepted according to step (2) judge in channel whether only one of which sending node, if there is more than one
Sending node, then random back turn to step (2) for a period of time；Otherwise, the sending node is designated as synchronization node, turns to step
(4)；
(4) sent in synchronization node and call transmission gating command to start at the SFD trailing edge interruptions for being grouped in and being produced at this node
Send packet.
2. a kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data as claimed in claim 1, it is characterised in that
The step (2) is specially：
(21) node periodically detects CCA pins, judges whether channel is in idle condition；
(22) nodes records are intercepted and the packet that other nodes are sent are received in channel time, and therefrom extract the source section of the packet
Period；Wherein step (21), step (22) are carried out simultaneously；Intercept channel and terminate rear steering step (23)；
(23) if during CCA pins are detected, at least there is one-time detection result for channel busy, and packet is not received, then tied
Fruit is channel busy, and random back intercepts channel again after for a period of time；Otherwise step (3) is turned to.
3. a kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data as claimed in claim 1, it is characterised in that
The step (4) is specially：
(41) order caching threshold value is set as 5, and node continues to a packet, in the order caching hardware as caused by the packet
Interrupt the source address information for being read at FIFOP and receiving packet；
(42) judge whether the source address information that (41) are obtained is equal with the synchronization node number that step (3) is recorded, if equal, at this
It is grouped in caused by this node place and calls transmission gating command to start to send packet at the interruption of SFD trailing edges, continues afterwards with most
Fast speed sends to its receiving node and is grouped.
4. a kind of method of wireless sensor and actor networks interior joint concurrently-transmitted data as claimed in claim 1, it is characterised in that：
The sending node and receiving node are but are not limited to CC2420 chips.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614910A (en) * | 2022-03-09 | 2022-06-10 | 江苏斯菲尔电气股份有限公司 | Pulse signal low-power-consumption wireless transmission system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7065376B2 (en) * | 2003-03-20 | 2006-06-20 | Microsoft Corporation | Multi-radio unification protocol |
| CN102387602A (en) * | 2011-11-23 | 2012-03-21 | 南京航空航天大学 | Efficient wireless ad hoc network concurrent transmission method for avoiding conflict |
| CN102685777A (en) * | 2012-04-23 | 2012-09-19 | 西安电子科技大学 | Data concurrent transmission system and method based on jamming margin |
| CN102695256A (en) * | 2012-05-29 | 2012-09-26 | 无锡赛睿科技有限公司 | Parallel transmission method and system thereof for wireless sensor network |
| CN104507119A (en) * | 2014-11-26 | 2015-04-08 | 无锡儒安科技有限公司 | Concurrent transmission based wireless sensor network data collection method |
| CN104735698A (en) * | 2015-03-09 | 2015-06-24 | 西安电子科技大学 | Data transmission method based on capture effect in wireless sensor network |
-
2017
- 2017-03-30 CN CN201710204699.7A patent/CN107018567B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7065376B2 (en) * | 2003-03-20 | 2006-06-20 | Microsoft Corporation | Multi-radio unification protocol |
| CN102387602A (en) * | 2011-11-23 | 2012-03-21 | 南京航空航天大学 | Efficient wireless ad hoc network concurrent transmission method for avoiding conflict |
| CN102685777A (en) * | 2012-04-23 | 2012-09-19 | 西安电子科技大学 | Data concurrent transmission system and method based on jamming margin |
| CN102695256A (en) * | 2012-05-29 | 2012-09-26 | 无锡赛睿科技有限公司 | Parallel transmission method and system thereof for wireless sensor network |
| CN104507119A (en) * | 2014-11-26 | 2015-04-08 | 无锡儒安科技有限公司 | Concurrent transmission based wireless sensor network data collection method |
| CN104735698A (en) * | 2015-03-09 | 2015-06-24 | 西安电子科技大学 | Data transmission method based on capture effect in wireless sensor network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614910A (en) * | 2022-03-09 | 2022-06-10 | 江苏斯菲尔电气股份有限公司 | Pulse signal low-power-consumption wireless transmission system and method |
| CN114614910B (en) * | 2022-03-09 | 2024-05-28 | 江苏斯菲尔电气股份有限公司 | Pulse signal low-power-consumption wireless transmission system and method |
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Effective date of registration: 20210512 Address after: Room 22209, unit 2, building 1, 21 Chang'an North Road, Beilin District, Xi'an City, Shaanxi Province, 710000 Patentee after: XI'AN ATUDA INDUSTRIAL ROBOT Co.,Ltd. Address before: 710071 Xi'an Electronic and Science University, 2 Taibai South Road, Shaanxi, Xi'an Patentee before: XIDIAN University |
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