CN106878918A - A kind of data of large-scale wireless electronic labelling system pay control method - Google Patents
A kind of data of large-scale wireless electronic labelling system pay control method Download PDFInfo
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- CN106878918A CN106878918A CN201610402107.8A CN201610402107A CN106878918A CN 106878918 A CN106878918 A CN 106878918A CN 201610402107 A CN201610402107 A CN 201610402107A CN 106878918 A CN106878918 A CN 106878918A
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- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000002372 labelling Methods 0.000 title claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 claims description 22
- 230000002618 waking effect Effects 0.000 claims description 7
- 238000007726 management method Methods 0.000 claims description 6
- 230000000737 periodic effect Effects 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000012854 evaluation process Methods 0.000 claims 2
- 230000006854 communication Effects 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 230000006855 networking Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004622 sleep time Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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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]
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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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- Computer Networks & Wireless Communication (AREA)
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Abstract
The data of large-scale wireless electronic labelling system pay control method, it is a low cost, super remote transmission range, super low-power consumption, with the effective requirement of business high, the method that the transmission of internet of things data efficient is realized suitable for Internet of Things large-scale wireless electronic labelling system of reliable operation.By realizing multifrequency co-ordination, dynamic calculation accesses situation with the congestion for estimating channel for the invention of this payment control method, realizes the target of extensive label cluster real-time data transmission.The method is a kind of in detail and with certain practicality and informative solution for class star topology Internet of Things large-scale cluster node data transmission method is provided.
Description
Technical field
The present invention relates to the low-consumption wireless communications field, further relate to Internet of Things bottom sensor information control command information and adopt
Collection and Internet of Things transport layer node data transmission control field.In the case of present invention is specifically related to large-scale network-estabilishing node,
Under how accomplishing to ensure that system low-power consumption is required, realization realizes that real-time is paid and channel is efficient to sensing node downlink data
Property transmission problem.
Background technology
As Internet of Things is studied and application is continued to develop, the life of people, production every field generate profound influence.
Electronic labelling system is a concrete application of Internet of Things, and it can be used in storage stock control, supermarket's merchandise control, archives
In the application scenarios such as management, medical sufferer management, with the target for realizing becoming more meticulous with intelligent management.In these application fields,
System node capacity is often in large scale, and the efficient response requirement of business game is high.Low-consumption wireless transmission technology is system institute
The key problem of solution.
Low-consumption wireless transmission technology can be divided into time-division, code division, frequency division, when counting asynchronous according to channel access control mode
Grading mode.Key technical problem involved by large-scale wireless tag system data delivery process is as follows：
Firstly, since the working method of wireless channel is half-duplex mode, node visit channel procedure has exclusiveness.It is many
Individual node is likely to occur competitive mode access within certain time to channel, and this involves how to coordinate access of each node to channel
How control, i.e., realize problem of the node to the asynchronous propulsion of channel access.
Secondly, to save label node power consumption, label node is realized receiving and feeding back work using periodic wakeup mechanism
Industry task, node is communicated in wake-up period with gateway unit.For gateway, how to know that specific label has been in and call out
In the cycle of waking up, how its downlink data is transmitted in its wake-up period, this is related to gateway unit and is paid in data with label node
Stationary problem before.
In addition, large-scale wireless tag system will meet the real-time of data payment, it shall be guaranteed that the service efficiency of channel,
This data for also relating to extensive tag system pays control method.
At present, related system proposes scheme with regard to certain above-mentioned or some aspects, such as above-mentioned [0004th] article, one
A little systems use time division multiplex channel mode, and respective timeslice is distributed to all label nodes in networking, and node is in the respective time
Communicated with gateway unit in piece, so as to the access collision problem of channel between solving multinode；For above-mentioned [0005th] article, one
A little systems communicate using inquiry of waking up by the way of with gateway unit, are not related to gateway to node to the use coordination process of channel；
Some systems carry out shunting treatment to data by introducing multichannel collaborative work mode by certain rule, to realize slowing down letter
Road congestion purpose.
The content of the invention
The present invention regarding to the issue above, by multichannel cooperative mechanism, dynamic evaluation channel usage, lead to by flexible configuration
Know that multiple labels wake up, realize the target of extensive tag system data high efficiency of transmission and channel effective use.
System architecture：
The hardware of correspondence system of the present invention is related to active electronic label node, radio network gateway and computer.
Here active electronic label node includes the wireless transmit/receive units that can configure multiple working channels；It is described wireless
The radio characteristics of gateway, refer to the wireless transmit/receive units for responding active electronic label node, and it comprises at least 2 Transmit-Receive Units,
It is used to send the notification signal transmitting element and the wireless transmit/receive units for transmission services data of notified tag wake-up.It is described
Computer is provided with the software entitys such as the business middleware that is communicated with radio network gateway.The connection of computer and radio network gateway, both
Can be communicated by wired or wireless mode.The relative position of radio network gateway and label node can fixation can also become
Change, but to ensure that two kinds of inter-entity are in communication range.Its system architecture is shown in accompanying drawing 1.
System operation is described：
The label node of system is in sleep state in general, and label node periodically actively wakes up, for transmitting to spy
Determine the data of label node, gateway unit transmits its data to the label in target labels wake-up period；Label node runs
Group-net communication is carried out after system first, with add gateway to be safeguarded network under；After label networking is finished, label node is in office
Business notifies that channel periodicity ground wakes up the notification signal that motoring gateway sends, and is carried out after the signal configuration purpose label wake-up system
Data receiver simultaneously authorizes access service data transmission channel, reaches and notifies that the purpose label takes task data away from gateway unit
Purpose.Communicated by data transmission channel between gateway and label miscellaneous service data, seen accompanying drawing 2, Fig. 3.The reality
When property refers to industry of the payment time delay of label up-downgoing data in 2 times of sleep cycle magnitude ranges less than corresponding label node
Business data are assigned.
System Working Principle：
Here by taking certain label node (being designated as A) of label cluster as an example, it is described from upper power supply running system, to its task of reception
The whole work disposal process of data.
(1) after A runtimes, networking operation is carried out first, radio network gateway networking processing module responds corresponding networking process；
(2) after A networkings are finished, it is under the jurisdiction of the network node that radio network gateway is set up；
(3) A enters periodic sleep/wakeup process, and now A wireless transmit/receive units working channel is monitor channel；Whether monitoring
There is gateway and be sent to its wake-up notification signal；
(4) A task datas (being designated as a) are issued to gateway, and gateway performs the data payment control strategy and a is delivered into A.
The treatment of Related Technical Issues：
The large-scale problem of system node capacity is realized for foregoing：Label cluster in the present invention is monitoring wake-up notice, passes
Parallel in 2 work-based logics such as defeated business datum, 2 processes are to the use of channel all by the way of " using on demand ", it is to avoid
The restriction produced to node capacity using time division multiplexing mode；Gateway proactive notification label node is waken up, it is to avoid label is waken up at random
Actively to initiate to wake up the channel high duty ratio reported and cause, so as to avoid channel congestion with node capacity influence in direct ratio
Problem；Label cluster of the present invention ensures that in communication range single gateway can manage up to ten thousand magnanimity label nodes.
For the problem of foregoing low-power consumption：The corresponding node wireless Transmit-Receive Unit sending power consumption of the present invention is more than reception power consumption, is
System label node Transmit-Receive Unit periodic wakeup receives notification signal, and non-active transmission wakes up report, greatly reduces single-unit
Point energy consumption；Gateway wakes up opportunity according to the notice of channel access situation abstract factory, it is to avoid channel congestion causes label node
Data are retransmitted, and reduce wakeup time, extend system use time；The label node most of the time is in sleep, it is ensured that battery makes
Use utility.
Problem is paid for foregoing real-time：Any time, specific label produces upstream data, and the node will be by CSMA therewith
The message is forwarded to gateway by mechanism as soon as possible；For downlink data, gateway estimates judge according to channel access, and " as early as possible " goes
Wake up purpose label, it is ensured that the real-time of downlink data forwarding.
CSMA (Carrier Sense Multi-Access) working method refer to before label sending signal first monitor channel whether
It is occupied, without then sending signal is taken, transmission is monitored otherwise after random delay again or the process of transmission is monitored in time delay again.
Brief description of the drawings
Fig. 1 tag system topology diagrams
Fig. 2 label node operation principle schematic diagrams
Fig. 3 label node running status machine figures
Fig. 4 gateways are performed and wake up strategic process figure
Fig. 5 label wakeup process process charts
In Fig. 1,101 represent upper software systems, and 102 and 103 are respectively gateway A and gateway B；104th, 106 it is respectively gateway A pipe
The label node of reason；108th, 110 it is respectively the label node that gateway B is managed；105th, 107, respectively 104 label nodes and
Object bound in 106 label nodes, such as article warehouse compartment.
In Fig. 2,201 represent sleep cycle Tsi, and 202 to wake up the timeslice size Tai to be received such as notice, and 203 start for gateway
The time point for waking up notification signal is sent, 204 represent task execution time piece Twi, and 205 expression labels receive own node and call out
The time point of awake notification signal.
In Fig. 3,301 represent starting state, and 302 represent networking state, and 303 represent listening state, and 304 represent the overtime thing of monitoring
Part, 305 represent sleep cycle, and 306 represent sleep time out event, and 307 expression tasks carryings finish event, and 308 represent that system swashs
Event living, 309 represent task data transmission and tasks carrying process.
In Fig. 4,401 represent beginning state, and 402 represent factor of influence Fa, Fb, the Fc process that produces, and 403 represent generation this time total letter
The estimated assessed value Rt processes in road, 404 expression Rt are to perform channel to use no output decision process, and 405 judge for channel can be used,
406 represent that label A is waken up notification signal to be added to queue is waken up, and 407 represent the unavailable judgement of channel, and 408 expression execution are
No to enter channel estimating decision process next time, 409 indicate entry into assessment next time judges.410 is explanatory notes, explanation
Every factor of influence shown in 402, wherein Fa is that channel 3 currently takes the factor；Fb is estimated to channel 3 for current all wake-up items
The occupancy factor；Fc is the current pre- estimated occupancy factor to channel 3 of wake-up item (label A).
In Fig. 5,501 represent beginning state, and 502 represent wakeup process state, and 503 represent wakening events, and 504 represent that monitoring is waited
State, 505 represent the decision process for performing and notifying that wake-up is no, and 506 represent it is result of determination, and 507 represent activation label node, cut
Business data transmission channel and gateway communication process are shifted to, 508 represent no result of determination, and 509 represent that execution monitoring time-out is no
Decision process, 510 represent no result of determination, and 511 represent it is result of determination.
Specific embodiment
The present invention is described in further detail below in conjunction with specific implementation case.
Here by apply store in a warehouse stock's service environment as a example by illustrate.Label node is by applying in warehouse inventory environment
In, realize the target to specific warehouse compartment Item Information fine-grained management.First by gateway deployment to specific warehouse environment, then will
Label node is bound with warehouse storage warehouse compartment, and after system starts, label cluster belongs to one that the gateway is managed with regard to rate
Network, upper layer software (applications) according to label and the mapping table of warehouse compartment, can issue the operation instruction of warehousing management person, such as flashing light simultaneously
Number of articles of display access correspondence warehouse compartment etc..
Assuming that the storehouse there are 30000 warehouse compartments, 30000 labels are disposed, a certain moment, upper layer software (applications) system issues a certain operation
To gateway, the job task includes the access operation that will be carried out to 30 warehouse compartments, data volume of the gateway according to forwarding to task-set
Size, is firstly added wherein preceding 25 labels to waking up task queue, certain subsequent time point, several label node tasks
Data end of transmission, gateway also learns " channel can use " in real time by channel estimation results, by it is ensuing several
Label node is dynamically added to task queue is waken up, and trial wakes up and perform the communication process for issuing.
In said process, it is assumed that stock's access operation personnel complete the goods accessing operation of some warehouse compartments at certain moment, its
The corresponding label of warehouse compartment will produce the task receipt that a button confirms, the label to generate a new upstream data, the mark
Sign the job task data forwarding to gateway, gateway is delivered to upper layer software (applications) system again.Upper layer software (applications) system receives this
After receipt, the article fresh information of correspondence warehouse compartment is transferred to gateway forwards to respective labels node again.
Above-mentioned 30000 wireless identification tag nodes were usually waken up on monitoring channel every 3 seconds (can also be changed to wake up once for 5 seconds)
The notification signal of secondary gateway transmission is monitored, the monitoring duration is 10ms or so；Any time, it is issued to different label nodes
Data type, data volume size is not quite similar, and some are needed to transmit label dot array data all over the screen (data long), and some are only transmitted
The renewal of some bytes represents data (short data), and data statement long needs to transmit 210ms, and short data is in 14ms or so.Gateway
Transmission time is estimated according to these data types and data volume size, gateway extremely wakes up in the wake-up signal of every addition specific label
Before queue, in the case of the communication efficiency for improving channel as far as possible is possible, channel availability is estimated, realize multiple label nodes
The real-time and concurrency of data distributing.The different business data of above-mentioned 30 labels can all pay in 10s and finish.
The present invention provides technical support without the operation suspected of the above-mentioned warehousing system of promotion and operation efficiency.
Claims (4)
1. a kind of data of large-scale wireless electronic labelling system pay control method, and the data are paid control method and use 2
Separate channel channelA and channelB, overall procedure is：
1. gateway receives the downlink data a of label A；
2. gateway performs the assessment of new round channel access：
_ 1) assess the current access situations of channel channelB, generation congestion factor Fa；
_ 2) calculate and assess it is all in current awake queue wake up items before next round assessment to the access influence situation of channel,
Generation congestion factor Fb；
_ 3) assessment this time wake up after A to the access of channel channelB, it is expected that generation congestion factor Fc；
_ 4) according to Fa, Fb, Fc, produce the estimated assessment Rt of this total channel；
If 3. Rt sums up, and " channel can use " can be obtained, the wake-up notification signal of A is added and wakes up queue；Otherwise, wait under entering
One wheel channel estimating.(above-mentioned 2., 3. step is shown in accompanying drawing 4).
4. after A periodic wakeups, its wireless transmit/receive units switches to channel channelB execution numbers after receiving its notification signal
According to transmitting procedure, accompanying drawing 5 is seen.
2. according to claim 1, the data pay control method using 2 separate channel channelA and
ChannelB, respectively transmission wakes up notification signal and business datum, and waking up notification signal is used to take industry away after notified tag wakes up
Business data, are being sent before waking up notification signal, and evaluation process is performed to channelB channels.The result of the evaluation process is determined
Determine gateway and send the opportunity that purpose label wakes up notification signal；Gateway assessment completes and calculates to learn " channel can use " that then it is opened
Originate and send the signal containing purpose label is notified, after the notified signal of purpose label, know wake-up notification command requirement, build therewith
It is vertical to be wirelessly transferred process, take business datum away from channelB, start to perform whole delivery of data.
3. it is described as the estimated assessed value Rt Fa according to claim 1, Fb, Fc tri- of time total channel according to claim 1
Congestion factor is generated；Fa carries out check and evaluation to the service condition of the current demand signal of channelB, and evaluation index includes current chain
Road index RSSI, link transmission type of message etc.；Fb wakes up item before next round assessment to letter to all in current awake queue
The access influence situation in road, including its holding time to channel, if when time total channel assessment result is " channel can use ",
Gateway will add the purpose label notification signal to notification signal processing module, purpose label to perform business data transmission after waking up
Process；The assessment in next cycle is otherwise waited for, until assessment result wakes up team to can use and purpose label notification signal is added
It is classified as only.
4. according to claim 1, it is characterised in that meet system node scale greatly, data transfer requirement of real-time is high, electronics mark
Signing system node using one kind that battery power reguirements low-power consumption is proposed there is data payment high real-time and transmission channel to gulp down
The method for telling control strategy.The management method is performed, gateway node dynamic calculation simultaneously predicts access feelings of the multinode to channel
Condition, neatly controls multinode to the access process of channel, realizes the high efficiency of transmission of data under large scale system.
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