CN105307283B - A kind of channel confliction processing method and system - Google Patents
A kind of channel confliction processing method and system Download PDFInfo
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- CN105307283B CN105307283B CN201510794341.5A CN201510794341A CN105307283B CN 105307283 B CN105307283 B CN 105307283B CN 201510794341 A CN201510794341 A CN 201510794341A CN 105307283 B CN105307283 B CN 105307283B
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- 238000004891 communication Methods 0.000 claims abstract description 95
- 230000006855 networking Effects 0.000 claims abstract description 27
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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
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
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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
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
- H04W74/0858—Random access procedures, e.g. with 4-step access with collision treatment collision detection
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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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Abstract
The present invention provides a kind of channel confliction processing method and system, after establishing the wireless network being made of multiple subnets, the subnet that search work channel overlaps, the communication success rate of the subnet each overlapped is obtained again, and by acquired communication success rate compared with pre-determined threshold, when the communication success rate of acquisition is more than pre-determined threshold, the step of being back to the subnet that described search working channel overlaps.Therefore, channel confliction processing method and system of the present invention, it can know that there is a situation where overlap for subnet working channel in time, and the communication success rate of the subnet in coincidence networking again when being less than pre-determined threshold, eliminate the situation of working channel coincidence, provide a kind of effective channel confliction processing method, it is ensured that the reliability of communication.
Description
Technical field
The present invention relates to wireless communication technology field, relates in particular to a kind of channel confliction processing method and system.
Background technology
Networking technology is one of key technology in micropower wireless communication technology, is micro power radio communication real-time performance
The precondition of data transfer.
The network-building method of common micro power radio communication network is：Networking message, Duo Gecong are sent by a Centroid
Node directly transmits after the networking message is received to be replied message to Centroid, Centroid after receiving this and replying message i.e.
Confirm networking success, each Centroid and some slave nodes being controlled by it may make up a subnet, and multiple subnets can be with
Micropower wireless network is formed, uses micropower wireless network to carry out wireless communication to save frequency resource.
Centroid can select to disturb less channel to be assigned as working channel under normal circumstances, in this working channel
In communicate with from node.But Centroid can only judge the working condition of channel around in this case, for network
With the channel disturbance situation None- identified around the slave node of other subnet coinciding edges in edge, especially cellular network, have
May occur the situation that two subnet working channels overlap during networking, cause the subnetwork communicating of working channel coincidence
Reliability reduces.
The content of the invention
For this reason, the technical problems to be solved by the invention are that two subnets easily occurs during networking in the prior art
The situation that working channel overlaps so that the reliability of communication reduces.
In order to solve the above technical problems, technical scheme is as follows：
The present invention provides a kind of channel confliction processing method, include the following steps：
Establish the wireless network being made of multiple subnets；
The subnet that search work channel overlaps；
Obtain the communication success rate of the subnet each overlapped；
By acquired communication success rate compared with pre-determined threshold；
When the communication success rate of acquisition is more than pre-determined threshold, the subnet that described search working channel overlaps is back to
The step of.
Channel confliction processing method of the present invention, further includes：
When the communication success rate of acquisition is less than pre-determined threshold, the wireless network established and be made of multiple subnets is back to
The step of network.
Channel confliction processing method of the present invention, the subnet that described search working channel overlaps include：
Obtain the communication data of the working channel for the place subnet that the slave node of the subnet is intercepted；
Whether detect includes the communication data that the Centroid of the subnet beyond the subnet is sent in the communication data；
When the communication data that the Centroid of the subnet beyond including the subnet is sent, by described where node
Subnet and the subnet sent where the Centroid of the communication data are labeled as the subnet that working channel overlaps.
Channel confliction processing method of the present invention, after judging that working channel overlaps, further includes：
Recording and sending channel confliction event.
Present invention also offers a kind of channel confliction processing system, including：
Networking unit, for establishing the wireless network being made of multiple subnets；
Search unit, the subnet overlapped for search work channel；
Success rate acquiring unit, for obtaining the communication success rate of the subnet each overlapped；
Comparing unit, for by acquired communication success rate compared with pre-determined threshold, when acquisition communication success
When rate is more than pre-determined threshold, described search unit is restarted.
Channel confliction processing system of the present invention, the comparing unit are additionally operable to when the communication success rate obtained is less than
During pre-determined threshold, the networking unit is restarted.
Channel confliction processing system of the present invention, described search unit include：
Subelement is intercepted, the communication number of the working channel for the place subnet that the slave node for obtaining the subnet is intercepted
According to；
Whether detection sub-unit, the Centroid of the subnet beyond the subnet is included for detecting in the communication data
The communication data sent；
Registration mark subelement, for the communication data sent when the Centroid for including the subnet beyond the subnet
When, the subnet from where node and the subnet where sending the Centroid of the communication data are labeled as working channel
The subnet overlapped.
Channel confliction processing system of the present invention, described search unit further include：
Transmission sub-unit is recorded, for recording and sending channel confliction event.
The above technical solution of the present invention has the following advantages over the prior art：
The present invention provides a kind of channel confliction processing method and system, the wireless network being made of multiple subnets is established
Afterwards, the subnet that search work channel overlaps, then the communication success rate of the subnet each overlapped is obtained, and acquired is led to
Believe that success rate compared with pre-determined threshold, when the communication success rate of acquisition is more than pre-determined threshold, is back to described search work
The step of making the subnet that channel overlaps.Therefore, channel confliction processing method and system of the present invention, can know in time
Subnet working channel is there is a situation where overlapping, and networking again when the communication success rate of the subnet in coincidence is less than pre-determined threshold,
Eliminate the situation of working channel coincidence, there is provided a kind of effective channel confliction processing method, it is ensured that the reliability of communication.
Brief description of the drawings
In order to make the content of the present invention more clearly understood, the specific embodiment below according to the present invention and combination
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is the flow chart of channel confliction processing method of the present invention；
Fig. 2 is the idiographic flow of the subnet that search work channel overlaps in channel confliction processing method of the present invention
Figure；
Fig. 3 is micropower wireless network topology figure in channel confliction processing method of the present invention；
Fig. 4 is the structure diagram of channel confliction processing method of the present invention.
Reference numeral is expressed as in figure：1- networking units, 2- search units, 3- acquiring units, 4- comparing units, 21- are detectd
Listen subelement, 22- retrieval subelements, 23- registration mark subelements, 24- record transmission sub-units.
Embodiment
Embodiment 1
A kind of channel confliction processing method is present embodiments provided, as shown in Figure 1, including the following steps：
S1. the wireless network being made of multiple subnets is established.
S2. the subnet that search work channel overlaps.
S3. the communication success rate of the subnet each overlapped is obtained.
S4. by acquired communication success rate compared with pre-determined threshold, preset when the communication success rate of acquisition is less than
During thresholding, the step S1 is back to, when the communication success rate of acquisition is more than pre-determined threshold, is back to the step S2.
Specifically, in step S1, wireless network can be micropower wireless network, during networking, first by centromere
Point sends networking message, and multiple directly transmitted from node after the networking message is received is replied message to Centroid, centromere
Point is after receiving this and replying message, you can the subnet for establishing the Centroid between the slave node that replies message, under normal conditions
It is working channel that Centroid, which can will disturb less channel distribution, is communicated with the slave node in subnet, multiple centromeres
Point can set up multiple subnets to form micropower wireless network (cellular network), and the wireless network that multiple subnets are set up can
Save frequency resource.
In step S2, because during multiple subnets composition wireless network, the network edge for the subnet that is connected is possible to meeting
Overlap, the working channel for causing two subnets situation about overlapping is occurred by this, makes the reduction of subnetwork communicating reliability.Step S2 passes through
The subnet that search work channel overlaps, the first time that coincidence situation can occur in adjoining subnetworks know the situation, are
The follow-up channel confliction processing of progress in time is laid a good foundation, and the subnet for avoiding coincidence is chronically at the situation of communication reliability difference
Generation.
If searching the subnet that working channel overlaps, the logical of the subnet that S3 is overlapped to obtain is entered step
Letter state, the communications status of subnet is characterized in the present embodiment by the communication success rate of subnet.Optionally, Centroid can be with
Counted according to the copy reading to the slave node in subnet, to obtain the communication success rate of subnet.The success rate that communicates is high, then illustrates subnet
Communications status it is good, communication success rate it is low, then illustrate that the communications status of subnet is poor, it is unstable, it is very convenient.
In step S4, pre-determined threshold could be provided as 90%, by the way that the communication success rate of acquisition and pre-determined threshold are carried out
Compare, to judge whether the subnet that channel overlaps needs networking again, if the communication success rate obtained is less than pre-determined threshold,
Step S1 can be then returned again to, current operating channel is abandoned and re-starts networking, if the communication success rate obtained is more than pre-determined threshold,
Then judge the subnet that working channel overlaps whether occur without networking again, return to step S2, in real time search.Namely even if
There is the subnet overlapped, if the subnetwork communicating overlapped is in order, current working channel can also be kept to communicate,
The time of channel restructuring has been saved, communication efficiency has been improved, only when the subnetwork communicating situation overlapped is poor, can just sentence
It is fixed to need networking again, it is ensured that the stability of subnetwork communicating.
Preferably, as shown in Fig. 2, the step S2 can include：
S21. the communication data of the working channel for the place subnet that the slave node of the subnet is intercepted is obtained；
Whether S22. detect includes the communication that the Centroid of the subnet beyond the subnet is sent in the communication data
Data；
S23., will be described from node institute when the communication data that the Centroid of the subnet beyond including the subnet is sent
Subnet and the subnet that sends where the Centroid of the communication data be labeled as the subnet that working channel overlaps.
Specifically, if because adjoining subnetworks do not overlap, the slave node in same subnet can only listen to its institute
In the communication data that the Centroid of subnet is sent, and if adjoining subnetworks overlap, the slave node in overlapping region is then
The data that the Centroid of adjoining subnetworks is sent can be listened to, therefore, once the communication data intercepted from node includes the son
The communication data that the Centroid of subnet beyond net is sent, you can judge that the working channel between subnet overlaps, very
It is convenient.
Preferably, after the step S23, can also include：
Recording and sending channel confliction event.
Specifically, sent when Centroid of the communication data listened to from node including the subnet beyond the subnet
During communication data, it can be recorded from node and channel confliction event occurs, and be reported to the Centroid of the subnet where it is located, record is concurrent
After channels collision event, S3-S6 can be entered step, timely processing channel confliction event, response is rapidly.From node conflict master
Channel confliction event can be reported to centromere by the mode of node channel conflict using CSMA mechanism by active reporting mode
Point, can also include event form by communication protocol extension field and notify Centroid, can make Centroid promptly and accurately
Know occur working channel overlap this case.
For the ease of more preferable such scheme, the present embodiment additionally provides a specific case study on implementation, in present case
Micropower wireless network topology figure as shown in figure 3, including the subnet A of node centered on A and centered on B node subnet B；
By Fig. 3, it can be seen that, subnet A and subnet B are overlapped, the slave node A7 of the subnet A in overlapping region possibly through
The part that working channel overlaps listens to the communication data that Centroid B is sent, similarly the slave section of the subnet B in overlapping region
Point B7 is also possible to the communication data for listening to Centroid A by the part that working channel overlaps and sending.Such as from node A7
The communication data that Centroid B is sent has been listened to, then has recorded working channel collision event, and channel is sent to Centroid A
Collision event, notifies Centroid A channel conflictions, from node A7 in working channel network relative free, utilizes CSMA mechanism
Channel confliction event is reported into Centroid A by active reporting mode；Or when Centroid A is communicated with, by logical
Believe that protocol extension information field includes event form notice Centroid A；Centroid A receives the channel confliction reported from node A7
After event, counted according to the slave node copy reading in network, obtain the communication success rate of subnet A, judge whether to need networking again.
If default letter success rate thresholding is 90%, networking again is carried out to it less than 90% in the communication success rate of subnet A, no longer
Use current working channel.After network re-establishes, Centroid and child node still perform aforesaid operations all the time, to ensure
Each subnet working channel does not conflict.
Channel confliction processing method described in the present embodiment, can know subnet working channel in time there is a situation where overlapping,
And the networking again when being less than pre-determined threshold of the communication success rate of the subnet in coincidence, the situation of working channel coincidence is eliminated, is carried
A kind of effective channel confliction processing method is supplied, it is ensured that the reliability of communication.
Embodiment 2
A kind of channel confliction processing system is present embodiments provided, as shown in figure 4, including：Networking unit 1, search unit
2nd, success rate acquiring unit 3, comparing unit 4；Wherein networking unit 1, for establishing the wireless network being made of multiple subnets, nothing
Gauze network can be micropower wireless network, can save frequency resource；Search unit 2, occurs weight for search work channel
The subnet of conjunction；Success rate acquiring unit 3, for obtaining the communication success rate of the subnet each overlapped；Comparing unit 4, for inciting somebody to action
Acquired communication success rate, when the communication success rate of acquisition is less than pre-determined threshold, restarts institute compared with pre-determined threshold
Networking unit 1 is stated, when the communication success rate of acquisition is more than pre-determined threshold, restarts described search unit 2.
Preferably, described search unit 2 can include：
Subelement 21 is intercepted, the communication of the working channel for the place subnet that the slave node for obtaining the subnet is intercepted
Data；
Whether detection sub-unit 22, the centromere of the subnet beyond the subnet is included for detecting in the communication data
The communication data that point is sent；
Registration mark subelement 23, for the communication data sent when the Centroid for including the subnet beyond the subnet
When, the subnet from where node and the subnet where sending the Centroid of the communication data are labeled as working channel
The subnet overlapped..
Preferably, described search unit 2 can also include：
Transmission sub-unit 24 is recorded, for recording and sending channel confliction event.
Channel confliction processing system described in the present embodiment, can know subnet working channel in time there is a situation where overlapping,
And the networking again when being less than pre-determined threshold of the communication success rate of the subnet in coincidence, the situation of working channel coincidence is eliminated, is carried
A kind of effective channel confliction processing method is supplied, it is ensured that the reliability of communication.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or square frame in journey and/or square frame and flowchart and/or the block diagram.These computer programs can be provided
The processors of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices, which produces, to be used in fact
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided and is used for realization in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Claims (6)
1. a kind of channel confliction processing method, it is characterised in that include the following steps：
Establish the wireless network being made of multiple subnets；Wherein, the wireless network is micropower wireless network；
The subnet that search work channel overlaps；
Obtain the communication success rate of the subnet each overlapped；
By acquired communication success rate compared with pre-determined threshold；
When the communication success rate of acquisition is more than pre-determined threshold, the step for the subnet that described search working channel overlaps is back to
Suddenly；
When the communication success rate of acquisition is less than pre-determined threshold, the wireless network established and be made of multiple subnets is back to
Step.
2. channel confliction processing method according to claim 1, it is characterised in that described search working channel overlaps
Subnet include：
Obtain the communication data of the working channel for the place subnet that the slave node of the subnet is intercepted；
Whether detect includes the communication data that the Centroid of the subnet beyond the subnet is sent in the communication data；
When the communication data that the Centroid of the subnet beyond including the subnet is sent, by the subnet from where node
The subnet overlapped with the subnet where the Centroid for sending the communication data labeled as working channel.
3. channel confliction processing method according to claim 2, it is characterised in that judge that coincidence occurs for working channel
Afterwards, further include：
Recording and sending channel confliction event.
A kind of 4. channel confliction processing system, it is characterised in that including：
Networking unit (1), for establishing the wireless network being made of multiple subnets；Wherein, the wireless network for micropower without
Gauze network；
Search unit (2), the subnet overlapped for search work channel；
Success rate acquiring unit (3), for obtaining the communication success rate of the subnet each overlapped；
Comparing unit (4), for by acquired communication success rate compared with pre-determined threshold, when the communication success rate of acquisition
During more than pre-determined threshold, described search unit (2) is restarted；The comparing unit (4) is additionally operable to when the communication success rate obtained is small
When pre-determined threshold, the networking unit (1) is restarted.
5. channel confliction processing system according to claim 4, it is characterised in that described search unit (2) includes：
Subelement (21) is intercepted, the communication number of the working channel for the place subnet that the slave node for obtaining the subnet is intercepted
According to；
Whether detection sub-unit (22), the Centroid of the subnet beyond the subnet is included for detecting in the communication data
The communication data sent；
Registration mark subelement (23), for the communication data sent when the Centroid for including the subnet beyond the subnet
When, the subnet from where node and the subnet where sending the Centroid of the communication data are labeled as working channel
The subnet overlapped.
6. channel confliction processing system according to claim 5, it is characterised in that described search unit (2) further includes：
Transmission sub-unit (24) is recorded, for recording and sending channel confliction event.
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| CN201510794341.5A CN105307283B (en) | 2015-03-25 | 2015-03-25 | A kind of channel confliction processing method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1698314A (en) * | 2003-01-07 | 2005-11-16 | 索尼株式会社 | Radio communication device, radio communication system, and radio communication method |
| CN102307394A (en) * | 2011-08-12 | 2012-01-04 | 赵旸 | Method for preventing wireless communication network channel contention conflict and device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8363579B2 (en) * | 2008-12-08 | 2013-01-29 | Intel Corporation | Apparatus and method of communication in a wireless network |
| US8553626B2 (en) * | 2008-12-10 | 2013-10-08 | Electronics And Telecommunications Research Institute | Apparatus and method for supporting access in wireless communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1698314A (en) * | 2003-01-07 | 2005-11-16 | 索尼株式会社 | Radio communication device, radio communication system, and radio communication method |
| CN102307394A (en) * | 2011-08-12 | 2012-01-04 | 赵旸 | Method for preventing wireless communication network channel contention conflict and device thereof |
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| CN104703290B (en) | 2018-01-16 |
| CN104703290A (en) | 2015-06-10 |
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