CN105979547A - Communication method, node device and system of wide-area Internet of things - Google Patents
Communication method, node device and system of wide-area Internet of things Download PDFInfo
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- CN105979547A CN105979547A CN201610503760.3A CN201610503760A CN105979547A CN 105979547 A CN105979547 A CN 105979547A CN 201610503760 A CN201610503760 A CN 201610503760A CN 105979547 A CN105979547 A CN 105979547A
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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
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0808—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA
- H04W74/0816—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using carrier sensing, e.g. as in CSMA carrier sensing with collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
- H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
- H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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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
Abstract
The invention discloses a communication method, a node device and a system of a wide-area Internet of things. The communication method of the wide-area Internet of things comprises the steps that a node after being waken up monitors a fixed data channel, starts seizing the fixed data channel if the fixed data channel is in an idle state, uploads node data through the fixed data channel if the node is succeeded in seizing the fixed data channel, starts seizing another channel if the fixed data channel is in a busy state or the node is failed in seizing the fixed data channel and when a preset condition is satisfied, and uploads the node data through the other channel if the node is succeeded in seizing the other channel. According to the communication method of the wide-area Internet of things, the other channel is seized for uploading of the node data when the node cannot upload the node data through the fixed data channel, so that the success rate of data transmission is ensured under the precondition of low power consumption.
Description
Technical field
The present invention relates to wireless communication technology field, particularly to a kind of wide area Internet of Things communication means,
Node apparatus and system.
Background technology
Along with the development of wireless communication technology and the application on Internet of Things, gradually form a kind of new
Technology, i.e. wireless sensor network (Wireless Sensor Networks is called for short WSN) technology.In nothing
In line sensing network system, between node and base station, distribute limited wireless communication resources, be used for building
The underlying basis structure of network system.Node is long-time in a dormant state, periodic wakeup according to demand
Obtain target data, and transfer data to base station.Use the typical protocol of node cycle dormancy mechanism
SMAC (dormancy medium education), its basic thought is: the dormancy of node cycle to reduce idle listening,
By physical/virtual carrier sense channel after reviving, it is judged that channel is the most idle or the need of receiving number
According to.But in this kind of communication mechanism, it is impossible to solve channel confliction collision cause data to transmit unsuccessfully and
The energy loss caused therefrom, channel confliction collision will also result in signal and crosses long delay.
Summary of the invention
In view of this, it is an object of the invention to provide one, ask in order to solve technology of the prior art
Topic.
The invention provides the communication means of a kind of wide area Internet of Things, described method includes:
Node intercepts fixed data channel after being waken up,
If described fixed data channel is idle condition, then start to seize described fixed data channel, as
Fruit is seized successfully, then by described fixed data channel uploading nodes data；
If described fixed data channel is busy condition or seizes the failure of described fixed data channel, and works as
When meeting pre-conditioned, then starting to seize other channels, if seizing other channel successes, then passing through institute
State other channels and upload described node data；
Said method, it is preferred that listen to described fixed data channel and be busy condition or seize described solid
After the failure of given data channel, also include before seizing other channels:
Described node arranges and enters sleep state the length of one's sleep, and records the channel of described fixed data channel
Busy number of times and/or described fixed data channel seize the frequency of failure；Described pre-conditioned be to work as channel busy
Commonplace number of times and/or seize the frequency of failure when reaching predetermined threshold value, node starts to seize other channels.
Said method, it is preferred that also include: if seizing other channel failures described, and when seizing it
When his the channel frequency of failure reaches predetermined threshold value, then abandon described node data, enter resting state.
Said method, it is preferred that if seizing other channel failures described, and lose when seizing other channels
Losing number of times when reaching predetermined threshold value, then abandon described node data, the concrete mode entering resting state is:
Other channels described include idle data channel and emergent channel, and node preferentially seizes idle data letter
Road；Without idle data channel or seize the failure of idle data channel and when seizing idle data channel
When the frequency of failure reaches predetermined threshold value, seize emergent channel；Seizing the failure of emergent channel and answering when seizing
The anxious channel frequency of failure reaches to abandon during predetermined threshold value described node data, enters resting state.
Said method, it is preferred that the described length of one's sleep is arranged according to nodal information, described nodal information bag
Including nodes encoding, the length of one's sleep between multiple nodes is different.
Said method, it is preferred that the described length of one's sleep is fixing wakeup time and dynamic wake-up time sum,
Described fixing wakeup time is wide area Internet of things system setting value, described dynamic wake-up time and described node
It is encoded into direct ratio.
Said method, it is preferred that described in seize described fixed data channel, seize other channels particularly as follows:
Transmission preemption information is to target BS, and described preemption information is by nodes encoding information and identification information group
Become.
Said method, it is preferred that also include before intercepting fixed data channel after waking up nodes:
Node intercepts broadcast singal, and described broadcast singal includes the number of nodes of multiple data channel, described
Node is seized the minimum data channel of number of nodes and is registered as fixed data channel, by described fixed data
Resting state is entered after channel uploading nodes data.
Second aspect present invention provides a kind of wide area Internet of things node device, including:
Intercept unit, for intercepting fixed data channel after node is waken up,
Preemption unit, for when described fixed data channel is idle condition, seizes described fixed data
Channel；
Transmitting element, by described fixed data channel after seizing the success of fixed data channel at node
Uploading nodes data；
Described preemption unit is additionally operable at described fixed data channel to be busy condition or seizes described fixed number
After it is believed that unsuccessfully, and when the busy number of times of channel and/or seize the fixed data channel frequency of failure and reach default
During threshold value, then start to seize other channels；
Described transmitting element is additionally operable to after node seizes other channel successes, by other channels described
Pass described node data.
Above-mentioned, it is preferred that described node apparatus also includes:
Counting unit, for record described fixed data channel the busy number of times of channel and/or described in seize solid
The given data channel frequency of failure and/or seize the idle data channel frequency of failure and/or seize emergency data letter
The road frequency of failure.
Third aspect present invention provides a kind of wide area Internet of things system, including background server, base station and on
The node apparatus stated.
From such scheme, the communication means of a kind of wide area Internet of Things that the present invention provides and wide area Internet of Things
Net node apparatus, is in busy condition at fixed data channel, or node is seized fixed data channel and lost
Lose, it is impossible in the case of fixed data channel uploading nodes data, seize other channels by selection
Carry out uploading nodes data, it is to avoid after node repeatedly dormancy awakening, repeatedly intercept fixed data channel, increase
Node power consumption also causes extended delays and the failure of data transmission that data transmit.Technical scheme
Can be implemented in the success rate ensureing data transmission under the precondition of low-power consumption.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided；
The flowchart of the communication means of a kind of wide area Internet of Things that Fig. 1 provides for the embodiment of the present invention；
Another flow process of the communication means of a kind of wide area Internet of Things that Fig. 2 and Fig. 3 provides for the embodiment of the present invention
Figure；
Fig. 4 is the graph of a relation of the length of one's sleep and nodes encoding；
The structured flowchart of a kind of wide area Internet of things node device that Fig. 5 provides for the application；
The structured flowchart of a kind of wide area Internet of things system that Fig. 6 provides for the application.
Detailed description of the invention
The present invention is the low-power consumption transparent communication mode of LoRa technology based on spread spectrum communication, has super long distance
From features such as, low-power consumption and stable communication performance abilities, wireless senser can letter through this transmission means
Single networking also realizes the data transmission of low-power consumption.The application scenarios that the present invention is directed to need long-time sleeping enters
Row design, the data intelligence transmission of such as ammeter water meter, it is possible to achieve more low-power consumption, wanting of lower cost
Ask.
As it is shown in figure 1, the invention provides the flowchart of the communication means of a kind of wide area Internet of Things, can
To include following steps:
S101, node intercept fixed data channel after being waken up.
Concrete, node automatically wakens up after a data collection cycle, prepares the node self gathered
Data are uploaded to base station, and whether it is in idle shape firstly the need of the fixed data channel intercepting original licensed
State.
If S102 described fixed data channel is idle condition, then starts to seize described fixed number and it is believed that
Road, if seizing successfully, then by described fixed data channel uploading nodes data.
Concrete, in the present embodiment, get involved agreement (Carrier Sense Multiple based on carrier sense multiple
Access, is called for short CSMA) can detect and whether channel has data transmit, if there being data to transmit,
Then channel is busy, transmits without data, and the most now channel status is idle.Concrete,
In LoRa communication technology, there is preamble detection function, by whether having preamble transmissions on detection channel,
Then can judge whether busy, if having signal to transmit.If channel is in idle condition, then by fixing
Data channel sends and carries the preemption information of self information to base station.Node sends RTS signal to base station,
Described RTS signal only includes nodal information and identification information, and will simplify nodal information so that packet
Length is reduced to the shortest, thus reduces the probability of collision and reduce the energy loss collided and cause, it is achieved fall
Low node power consumption.Nodal information includes nodes encoding information, and it is one that identification information is used for identifying this information
Bar preemption information rather than data message, it is simple to base station resolves.If base station receives complete preemption information
Then can return response message ACK, node receive respective response message ACK after then fixed data channel rob
Account for successfully.The node data that needs are uploaded after seizing the success of fixed data channel by node transmits to base station.
If S103 described fixed data channel is busy condition or seizes the failure of described fixed data channel,
And when meeting pre-conditioned, then start to seize other channels, if seizing other channel successes, then lead to
Cross other channels described and upload described node data；
It is busy condition or node does not receives the response message of base station then when listening to this fixed data channel
Fixed data channel seizes failure, and when being not provided with any condition, node directly selects seizes other channels,
Send to other channels and carry the preemption information of self information to base station, if base station receives complete seizing
Information then can return response message, and node receives respective response message and then seizes other channel successes.Seize
The node data then uploaded by needs by this emergent channel after success is transmitted to base station.
When pre-conditioned for when the busy number of times of channel and/or seize the frequency of failure reach predetermined threshold value time, node
Number of times busy to channel and/or seize the frequency of failure and carry out record, recording mode can be accumulative formula, i.e. channel
Busy number of times and seize the fixed data channel frequency of failure add up the threshold value reaching default time, then node
Seize other channels；Recording mode can also be the difference busy number of times of formula, i.e. channel or seize fixed data
Channel frequency of failure record respectively, when the two one of them number of times reaches predetermined threshold value, node just seizes it
His channel.In the present embodiment, other channels include other data channels and/or emergent channel.
If S104 seizes other channel failures described, then enter resting state.
If node does not receives the response message that base station returns, then seize other channel failures, this time
Point can abandon the node data this time gathered, and enters resting state, waits that collection period next time wakes up up.
The node data that this gathers can also be stored, subsequently into resting state, gather week with next time
Phase wake up up after gather node data send together to base station.
From above-described embodiment, the communication means of a kind of wide area Internet of Things that the present invention provides, fixing
Data channel is in busy condition, or node seizes the failure of fixed data channel, it is impossible to pass through fixed number
In the case of it is believed that uploading nodes data, select to seize other channels and carry out uploading nodes data, it is to avoid
Repeatedly intercept fixed data channel after node repeatedly dormancy awakening, increase node power consumption and cause data to be transmitted
Extended delays and data transmission failure.Technical scheme can be implemented in the premise of low-power consumption
Under the conditions of ensure data transmission success rate.
Embodiment two
Refer to communication means another of a kind of wide area Internet of Things that Fig. 2 and Fig. 3 embodiment of the present invention provides
One flow chart, may comprise steps of:
S301, node intercept broadcast singal, and described broadcast singal includes the number of nodes of multiple data channel,
Described node is seized the minimum data channel of number of nodes and is registered as fixed data channel；
Node, when first powering on, be not best suitable for uploading the base station login registration related information of data,
It does not has fixed data transmission node data.Now, node first intercepts broadcast singal, broadcast singal
Including the number of nodes registered in all data channels in base station, node selects according to number of nodes information
The minimum data channel of quantity is registered, and sends log-on message to this base station, base station registered nodes
Information also returns relevant information to node, and node i.e. selects fixed data channel to upload joint after base station login
Point data.This is uploaded and enters resting state the most afterwards, waits that data collection cycle next time wakes up up.
S302, node intercept fixed data channel after being waken up；
If S303 described fixed data channel is idle condition, then starts to seize described fixed number and it is believed that
Road, if seizing successfully, then by described fixed data channel uploading nodes data；
Step S302-S303 implements related content in S101～S102 being referred in embodiment one,
The most no longer describe in detail.
If S304 described fixed data channel is busy condition or seizes the failure of described fixed data channel,
Described node arranges and enters sleep state the length of one's sleep；And record the channel of described fixed data channel respectively
Busy number of times and described fixed data channel seize the frequency of failure；
If fixed data channel is busy, it was demonstrated that this fixed data channel is used by other nodes.As
Really node send channel seize message but do not receive base station return seize successfully ACK, illustrate this message with
Other message collision, show that now more than one node seizes this fixed data channel channel in hope.This
Time if, with the set time sleep wake up up again, by there being the biggest probability to occur, last time seizes the feelings of channel simultaneously
Condition.Coding according to node is produced a whole network and uniquely prolongs by the time that therefore node wakes up up again
Time time, fixed value is become a different time, this time can be according to concrete nodes
Amount changes with delay requirement, thus avoids identical competition node and again collide.Such as, a base
After the nodes encoding stood in network is added base station by node, base station is distributed unitedly, the Serial Number Range of node
Be 0 to 65535.The length of one's sleep is made up of two parts: the dynamic wake-up that fixing wakeup time determines with coding
Time.Fixing wakeup time is to set, and the dynamic wake-up time is linear pass according to nodes encoding difference
System.The graph of a relation of the length of one's sleep and nodes encoding is as shown in Figure 4.By dynamically arranging of the length of one's sleep is subtracted
Few node seizes the collision of channel, can reduce the energy loss that channel collision brings.
In the present embodiment, above-mentioned sleep is low when unsuccessful uploading nodes data delay are uploaded of node
Power consumption state, above-mentioned dormancy is according to the setting of node data collection period for node, in non-data collection
Low power consumpting state in time.According to actual application scenarios, dormancy time is far longer than the length of one's sleep.
If S305 described fixed data channel is busy condition or seizes the failure of described fixed data channel,
And when the busy number of times of channel and/or seize the fixed data channel frequency of failure reach predetermined threshold value time, then start
Intercepting broadcast singal, described broadcast singal includes other state information of data channels, if there is idle number
It is believed that, the most described node seizes described idle data channel, if seizing successfully, then by described sky
Not busy data channel uploads described node data；
Node calculate enter sleep state the length of one's sleep while can record the channel busy of fixed data channel
Commonplace number of times and/or seize the fixed data channel frequency of failure, if the two any one number of times reaches default value,
Such as three times, then node begins listening for broadcast singal, and it is the most idle that broadcast singal contains each data channel,
If it find that there are other idle data channels, seize idle data channel the most temporarily, if seizing successfully,
Then upload described node data by described idle data channel.It seizes step with above-mentioned S102.
If S306 is without idle data channel or repeatedly seizes the failure of idle data channel, then seize emergent
Channel, after repeatedly seizing the failure of emergent channel, abandons described node data, enters resting state.
Node does not finds idle data channel by intercepting broadcast singal, or finds that idle data channel is sent out
Sending and seize the failure of idle data channel, and the frequency of failure reaches certain numerical value, such as three times, then node is robbed
Account for emergent channel, if seizing successfully, then by emergent channel uploading nodes data.If seizing emergent
Channel failure, then set Active sleep time entrance sleep state.Emergent channel is repeatedly seized if accumulative
Failure, such as three times, then node selects to abandon the node data this time needing to upload, and enters resting state,
Wait that collection period next time wakes up up.
Node, after every time success uploading nodes data, all can exit the channel of uploading nodes data, and clearly
The zero busy number of times of channel, seize the fixed data channel frequency of failure, seize the idle data channel frequency of failure
With seize the emergent channel frequency of failure.Subsequently into resting state, wait that collection period next time wakes up up.
From above-described embodiment, the communication means of a kind of wide area Internet of Things that the present invention provides, by setting
Putting the Active sleep time and the data packet length of message is seized in shortening, the probability and the minimizing that reduce collision are touched
The energy loss hit and cause.It addition, fixed data channel uploading nodes number repeatedly cannot be passed through at node
According to time, select other idle data channels, then select emergent channel without other idle data channels
Uploading nodes data.Thus reduce node owing to uploading the time delay that data collision causes, improve node and upload
The success rate of data.
Embodiment three
Referring to Fig. 5, a kind of wide area Internet of things node device that the present embodiment provides, including intercepting unit
01, for intercepting fixed data channel after waking up nodes；Preemption unit 02, in this fixed data
When channel is idle condition, seize this fixed data channel；Transmitting element 03, solid for seizing at node
By these fixed data channel uploading nodes data after given data success；Counting unit 04, is used for recording letter
The busy number of times in road and/or seize the fixed data channel frequency of failure and/or seize idle data channel failure time
Count and/or seize the emergency data channel frequency of failure.This preemption unit 01 is additionally operable at this fixed data channel
For busy condition or seize fixed data channel failure after, seize other channels；This transmitting element 03 is also used
In after seizing other channel successes, by other channel uploading nodes data.
The unit of the present embodiment interior joint device realizes the mode of its respective function and is referred to hereinbefore
Embodiment of the method related content, the most no longer describes in detail.
Embodiment 4
Refer to Fig. 6, a kind of wide area Internet of things system that the present embodiment provides, including background server 601,
Base station 602 and node apparatus 603.This node apparatus 603 for acquisition node data and is uploaded to base station
602, it uploads mode reference embodiment related content above, the most no longer describes in detail.Base station 602 is receiving
Sending to background server 601 after the node data that node apparatus 603 sends, background server 601 is right
Node data is further processed.
If the function described in the present embodiment method realizes and as independent using the form of SFU software functional unit
When production marketing or use, a calculating device-readable can be stored in and take in storage medium.Based on so
Understanding, part or the part of this technical scheme that prior art is contributed by the embodiment of the present invention can
Embodying with the form with software product, this software product is stored in a storage medium, if including
Dry instruction with so that calculating equipment (can be personal computer, server, mobile computing device
Or the network equipment or processor etc.) perform completely or partially walking of method described in each embodiment of the present invention
Suddenly.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or light
The various medium that can store program code such as dish.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses
Being the difference with other embodiments, between each embodiment, same or similar part sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, in this specification, embodiment is only a part of embodiment of the present invention,
Rather than whole embodiments, based on the embodiment in the present invention, those of ordinary skill in the art are not having
Make the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention
The present invention is not intended to be limited to the embodiments shown herein, and is to fit to disclosed herein
Principle and the consistent the widest scope of features of novelty.
Claims (11)
1. the communication means of a wide area Internet of Things, it is characterised in that described method includes:
Node intercepts fixed data channel after being waken up；
If described fixed data channel is idle condition, then start to seize described fixed data channel, as
Fruit is seized successfully, then by described fixed data channel uploading nodes data；
If described fixed data channel is busy condition or seizes the failure of described fixed data channel, and full
When foot is pre-conditioned, then start to seize other channels, if seizing other channel successes, then by described
Other channels upload described node data.
Communication means the most according to claim 1, it is characterised in that listen to described fixed data
Channel be busy condition or seize described fixed data channel failure after, also wrap before seizing other channels
Include:
Described node arranges and enters sleep state the length of one's sleep, and records the channel of described fixed data channel
Busy number of times and/or described fixed data channel seize the frequency of failure；
Described pre-conditioned for when the busy number of times of channel and/or seize the frequency of failure reach predetermined threshold value time, joint
Point starts to seize other channels.
Communication means the most according to claim 2, it is characterised in that also include:
If seizing other channel failures described, and reach predetermined threshold value when seizing other channel frequency of failures
Time, then abandon described node data, enter resting state.
Communication means the most according to claim 3, it is characterised in that if seizing other letters described
Road failure, and when seizing other channel frequency of failures and reaching predetermined threshold value, then abandon described node data,
The concrete mode entering resting state is:
Other channels described include idle data channel and emergent channel, and node preferentially seizes idle data letter
Road；
Without idle data channel or seize the failure of idle data channel and when seizing idle data channel
When the frequency of failure reaches predetermined threshold value, seize emergent channel；
Seize the failure of emergent channel and abandon institute when seizing the emergent channel frequency of failure and reaching predetermined threshold value
State node data, enter resting state.
5. according to the communication means described in any one of claim 2 to 4, it is characterised in that described sleep
Time is arranged according to nodal information, and described nodal information includes nodes encoding, the sleep between multiple nodes
Time is different.
Communication means the most according to claim 5, it is characterised in that the described length of one's sleep is fixing
Wakeup time and dynamic wake-up time sum, described fixing wakeup time is wide area Internet of things system setting value,
The described dynamic wake-up time is directly proportional to described nodes encoding.
Communication means the most according to claim 6, it is characterised in that described in seize described fixed number
It is believed that, seize other channels particularly as follows:
Transmission preemption information is to target BS, and described preemption information is by nodes encoding information and identification information group
Become.
Communication means the most according to claim 1, it is characterised in that intercept after node is waken up
Also include before fixed data channel:
Node intercepts broadcast singal, and described broadcast singal includes the number of nodes of multiple data channel, described
Node is seized the minimum data channel of number of nodes and is registered as fixed data channel, by described fixed data
Resting state is entered after channel uploading nodes data.
9. a wide area Internet of things node device, it is characterised in that including:
Intercept unit, for intercepting fixed data channel after node is waken up,
Preemption unit, for when described fixed data channel is idle condition, seizes described fixed data
Channel；
Transmitting element, by described fixed data channel after seizing the success of fixed data channel at node
Uploading nodes data；
Described preemption unit is additionally operable at described fixed data channel to be busy condition or seizes described fixed number
It is believed that unsuccessfully, and when the busy number of times of channel and/or seize the fixed data channel frequency of failure reach preset threshold
During value, then start to seize other channels；
Described transmitting element is additionally operable to after node seizes other channel successes, by other channels described
Pass described node data.
Node apparatus the most according to claim 9, it is characterised in that
Counting unit, be used for recording the busy number of times of channel and/or seize the fixed data channel frequency of failure and/
Or seize the idle data channel frequency of failure and/or seize the emergency data channel frequency of failure.
11. 1 kinds of wide area Internet of things system, it is characterised in that include background server, base station and right
Require the node apparatus described in 9 or 10.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106455134A (en) * | 2016-10-17 | 2017-02-22 | 国动物联网技术（上海）有限公司 | LoRaWAN ad-hoc network equipment |
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| CN106455134A (en) * | 2016-10-17 | 2017-02-22 | 国动物联网技术（上海）有限公司 | LoRaWAN ad-hoc network equipment |
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| CN107528677A (en) * | 2017-10-11 | 2017-12-29 | 杭州若联科技有限公司 | Information sends failure way to play for time and device |
| CN109699063A (en) * | 2017-10-24 | 2019-04-30 | 普天信息技术有限公司 | A kind of processing that seizing indication signaling and sending method, terminal and base station |
| CN109699063B (en) * | 2017-10-24 | 2021-10-26 | 普天信息技术有限公司 | Processing and sending method of preemption indication signaling, terminal and base station |
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