CN107835521A - Field strength threshold value network-building method and device - Google Patents
Field strength threshold value network-building method and device Download PDFInfo
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- CN107835521A CN107835521A CN201711056961.4A CN201711056961A CN107835521A CN 107835521 A CN107835521 A CN 107835521A CN 201711056961 A CN201711056961 A CN 201711056961A CN 107835521 A CN107835521 A CN 107835521A
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Abstract
The present invention provides a kind of field strength threshold value network-building method and device, is related to networking technology field.This method and device are based on field strength threshold value and carry out networking to host node and respectively from node, and to form communication network, that is, the communication connection situation based on current each communication node carries out networking, to improve the stability and reliability of the communication network formed.Specifically, scheme provided by the invention broadcasts actual beacon frame by host node, from node received beacon frame and obtain corresponding field strength data, receive actual beacon frame will regenerate the actual beacon frame from node, and the actual beacon frame is broadcasted, to expand the quantity from node that can receive actual beacon frame；For receive actual beacon frame from node, by its field strength data be not less than corresponding field strength threshold value from node and send the host node of the actual beacon frame or successively carry out networking from node, to form the communication network of cascade.
Description
Technical field
The present invention relates to networking technology field, in particular to a kind of field strength threshold value network-building method and device.
Background technology
With the development of Internet of Things, application of the micropower wireless communication technology in some low-power consumption fields is more and more extensive,
The advantages of its site operation is simple, cost is low obtains the approval of user.The micro power radio communication device of prior art extensively should
Used in radio meter register, industrial telemetry, remote control, in automatic data collection, building automatic, calculator room equipment monitoring, security protection, gate inhibition
In the industry such as system, Wireless Keyboard, wireless mouse, Underwater Navigation, alarm and civil equipment.In application process, it usually needs
Networking is carried out to communicator, to realize data interaction.In the prior art, networking generally is carried out using communication link, can not
Ensure the stability in communication, easily cause the stability of the network system of networking formation poor.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, the present invention provides a kind of field strength threshold value network-building method and device, can
Adaptive polo placement field strength data, and networking is carried out according to field strength data, to improve the stability of the network system of networking formation, enter
And solve the above problems.
To achieve these goals, the technical scheme that present pre-ferred embodiments are provided is as follows：
Present pre-ferred embodiments provide a kind of field strength threshold value network-building method, applied to multiple communication nodes, the communication
Node includes host node and multiple included from node, methods described：
The host node broadcasts actual beacon frame；
For each described from node, when receiving the actual beacon frame first, the actual beacon frame and wide is regenerated
Broadcast the actual beacon frame of forwarding regeneration；
The host node sends acquisition, receive the acquisition that the host node is sent from node to the master
Node is reported respectively from the field strength data of nodes records；
The host node will report the field strength data to the host node from node as the 1st layer from node, record institute
State the 1st layer of field strength data reported from node；
Kth layer from node send acquisition, receive the acquisition that the kth layer is sent from node from node to
The kth layer reports the field strength data of record from node, wherein, k is the integer more than or equal to 1；
The kth layer from node using report the field strength data from node as+1 layer of kth from node, record described
The field strength data that k+1 layers report from node；
The field strength data of the nonzero value in the field strength data that each layer reports from node are chosen, and calculate the field strength data of selection
Characteristic value, and field strength threshold value corresponding to each level is worth to by the feature；
Field strength data in each level are formed into communication network not less than the field strength threshold value from node.
In the preferred embodiment, it is above-mentioned for each described from node, receiving the default letter first
When marking frame, the step of regenerating the actual beacon frame and broadcast the actual beacon frame of forwarding regeneration, including：
The actual beacon frame is monitored in the respectively signal intensity from node and the direction of propagation, with field strength number corresponding to obtaining
According to；
By obtained field strength data record be stored in corresponding to from node, so as to send the master/slave section of the actual beacon frame
Point can from receive the actual beacon frame it is each from node collect corresponding to field strength data.
In the preferred embodiment, above-mentioned kth layer from node using report the field strength data from node as
+ 1 layer of kth from node, record+1 layer of the kth from the field strength data that node reports the step of, including：
The kth layer successively collects the corresponding field strength data from node from node, in the level described in collection from node
To stop collecting during default level.
In the preferred embodiment, it is above-mentioned by field strength data in each level not less than the field strength threshold value from section
The step of point composition communication network, including：
The field strength data are chosen from described 1st layer from node not less than the field strength threshold value from node；
Selection is connected from node with the host node, to form the communication network.
In the preferred embodiment, it is above-mentioned by field strength data in each level not less than the field strength threshold value from section
The step of point composition communication network, including：
Being chosen from the kth layer from node makes each field strength that the actual beacon frame is received from node of+1 layer of kth
The maximum kth layer of data is from node；
By kth ,+1 layer communicates to connect from node with the kth layer of corresponding selection from node, to form the communication network.
Presently preferred embodiments of the present invention also provides a kind of field strength threshold value network device, described applied to multiple communication nodes
Communication node includes host node and multiple included from node, the field strength threshold value network device：
First radio unit, for making the host node broadcast actual beacon frame；
Second radio unit, for for each described from node, when receiving the actual beacon frame first, make pair
That answers regenerates the actual beacon frame from node and broadcasts the actual beacon frame of forwarding regeneration；
First collecting unit, for making the host node send acquisition, receive the collection that the host node is sent
Order is reported respectively from node to the host node from the field strength data of nodes records；
First recording unit, for make the host node will report the field strength data to the host node from node as
1st layer from node so that the host node records the 1st layer of field strength data reported from node；
Second collecting unit, for making kth layer send acquisition from node, receive the kth layer and sent from node
Acquisition the field strength data that record is reported from node to the kth layer from node, wherein, k is whole more than or equal to 1
Number；
Second recording unit, for make the kth layer from node using report the field strength data from node as kth+1
Layer is from node, so that the kth layer is from+1 layer of field strength data reported from node of kth described in nodes records；
Computing unit is chosen, the field strength data of the nonzero value in the field strength data reported for choosing each layer from node, and
The characteristic value for the field strength data chosen is calculated, and field strength threshold value corresponding to each level is worth to by the feature；
Networking unit, for field strength data in each level to be formed into communication network from node not less than the field strength threshold value
Network.
In the preferred embodiment, above-mentioned second radio unit is additionally operable to：
The actual beacon frame is monitored in the respectively signal intensity from node and the direction of propagation, with field strength number corresponding to obtaining
According to；
By obtained field strength data record be stored in corresponding to from node, so as to send the master/slave section of the actual beacon frame
Point can from receive the actual beacon frame it is each from node collect corresponding to field strength data.
In the preferred embodiment, above-mentioned second recording unit is additionally operable to：
The kth layer successively collects the corresponding field strength data from node from node, in the level described in collection from node
To stop collecting during default level.
In the preferred embodiment, above-mentioned networking unit is additionally operable to：
The field strength data are chosen from described 1st layer from node not less than the field strength threshold value from node；
Selection is connected from node with the host node, to form the communication network.
In the preferred embodiment, above-mentioned networking unit is additionally operable to：
Being chosen from the kth layer from node makes each field strength that the actual beacon frame is received from node of+1 layer of kth
The maximum kth layer of data is from node；
By kth ,+1 layer communicates to connect from node with the kth layer of corresponding selection from node, to form the communication network.
In terms of existing technologies, field strength threshold value network-building method and device provided by the invention at least have beneficial below
Effect：This method and device are based on field strength threshold value and carry out networking to host node and respectively from node, to form communication network, that is,
Communication connection situation based on current each communication node carries out networking, to improve the stability of communication network form and reliably
Property.Specifically, scheme provided by the invention broadcasts actual beacon frame by host node, from node received beacon frame and obtains correspondingly
Field strength data, receive actual beacon frame will regenerate the actual beacon frame from node, and the actual beacon frame be carried out wide
Broadcast, to expand the quantity from node that can receive actual beacon frame；For receive actual beacon frame from node, Jiang Qichang
Strong data are not less than corresponding field strength threshold value from node with sending the host node of the actual beacon frame or successively being carried out from node
Networking, to form the communication network of cascade.
To enable the above objects, features and advantages of the present invention to become apparent, present pre-ferred embodiments cited below particularly,
And accompanying drawing appended by coordinating, it is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described.It should be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the distribution schematic diagram for the communication node that present pre-ferred embodiments provide.
Fig. 2 is the block diagram for the host node that present pre-ferred embodiments provide.
Fig. 3 is the field strength threshold value network-building method that present pre-ferred embodiments provide.
Fig. 4 is the field strength threshold value network device that present pre-ferred embodiments provide.
Icon：10- host nodes；11- processing units；12- memory cell；13- communication units；20- is from node；100- field strength
Threshold value network device；The radio units of 110- first；The radio units of 120- second；The collecting units of 130- first；140- first is recorded
Unit；The collecting units of 150- second；The recording units of 160- second；170- chooses computing unit；180- networking units.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on embodiments of the invention, people in the art
The every other embodiment that member is obtained on the premise of creative work is not made, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.In addition, term " the
One ", " second " etc. is only used for distinguishing description, and it is not intended that instruction or hint relative importance.
Below in conjunction with the accompanying drawings, some embodiments of the present invention are elaborated.It is following in the case where not conflicting
Feature in embodiment and embodiment can be mutually combined.
Fig. 1 is refer to, is the distribution schematic diagram for the communication node that present pre-ferred embodiments provide.Understandably, this is logical
Believe that node can include host node 10 and from node 20, Fig. 1 is that a host node 10 shows with multiple from the level distribution of node 20
It is intended to, to divide a kind of obtained schematic diagram to being respectively identified from node 20 after networking.In the present embodiment, usually, exist
During carrying out network service, host node 10 and it is relatively fixed from the geographical position of node 20 (or physical spatial location), no
Can arbitrarily it change.And geographical position is limited to, that directly network service can not be carried out with host node 10 from node 20 be present.
For this kind of from node 20, it is necessary to be connected with one or more other from node 20 to realize the communication connection with host node 10,
And then realize data interaction.
For example, in centralized automatic meter-reading technical field, the power consumption that need to be used by all kinds of metering device metering users, water is used
The data such as amount, gas consumption.Metering device can be connected by wired or wireless network with collection device, and the collection device can concentrate receipts
Collect the data of each metering device metering, above mentioned problem is just there may be in data exchange process.
In the present embodiment, the host node 10 can be above-mentioned collection device.Specifically, such as, the host node 10
Center (Celluar Access Center, CAC) is accessed for microcellulor.It is described from node 20 can be above-mentioned metering device, than
Such as wireless watermeter, ammeter.The solution of the present invention is based on field strength data and carries out networking to host node 10 and respectively from node 20, can shape
Into reliable and stable communication network.
Fig. 2 is refer to, is the block diagram for the host node 10 that present pre-ferred embodiments provide.Understandably, the master
Node 10 can include processing unit 11, communication unit 13, memory cell 12 and field strength threshold value network device 100, the place
Manage between unit 11,100 each element of communication unit 13, memory cell 12 and field strength threshold value network device directly or indirectly
It is electrically connected with, to realize the transmission of data or interaction.For example, these elements can pass through one or more communication bus between each other
Or signal wire is realized and is electrically connected with.
The processing unit 11 can be processor.For example, the processor can be central processing unit (Central
Processing Unit, CPU), network processing unit (Network Processor, NP), graphics processor (Graphics
Processing Unit, GPU) etc.；It can also be that digital signal processor (DSP), application specific integrated circuit (ASIC), scene can
Program gate array (FPGA) either other PLDs, discrete gate or transistor logic, discrete hardware components.
It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.
The communication unit 13 is used for by network host node 10 and the communication connection from node 20, and passes through the network
Transceiving data.Alternatively, host node 10 is communicated to connect by wireless network with being established from node 20.
The memory cell 12 may be, but not limited to, random access memory, read-only storage, may be programmed read-only deposit
Reservoir, Erasable Programmable Read Only Memory EPROM, Electrically Erasable Read Only Memory etc..In the present embodiment, the storage
Unit 12 can be used for storage from the field strength data respectively collected from node 20.Certainly, the memory can be also used for storing journey
Sequence, the processing unit 11 perform the program after execute instruction is received.
Further, the field strength threshold value network device 100 include it is at least one can be with software or firmware (firmware)
Form be stored in the memory cell 12 or be solidificated in the operating system of host node 10 (operating system, OS)
Software function module.The processing unit 11 is used to perform the executable module stored in the memory cell 12, such as field strength
Software function module and computer program included by threshold value network device 100 etc..
It is understood that the structure shown in Fig. 2 is only a kind of structural representation of host node 10, the host node 10 is also
It can include than more or less components shown in Fig. 2.Each component shown in Fig. 2 can use hardware, software or its combination
Realize.
Fig. 3 is refer to, is the field strength threshold value network-building method that present pre-ferred embodiments provide.It is provided in an embodiment of the present invention
Field strength threshold value network-building method can apply in above-mentioned communication node, and the communication node includes host node 10 and multiple from node
20.This method broadcasts actual beacon frame by host node 10, and field strength corresponding to the actual beacon frame and record is received from node 20
Threshold value, and the actual beacon frame and the actual beacon frame of broadcast regeneration are regenerated, so as to can more be received from node 20 default
Beacon frame.Based on default field strength threshold value, receive actual beacon frame from node 20 from host node 10 successively to lower floor from section
Point 20 carries out networking, to obtain communication network.Wherein, the beacon frame respectively can be recorded after actual beacon frame is received from node 20
Corresponding field strength data, that is, during networking, field strength data are collected along the communication node of up path, according to current each
The communication conditions of communication node, there is provided a kind of more excellent networking mode, so that the communication network of composition is more reliable and stable.
Understandably, the field strength threshold value network-building method that the present embodiment provides is during networking, without changing host node 10
Respectively from the geographical position of node 20, respectively communicated as long as can establish from the communication connection between node 20, host node 10 to form
Network.
Each step shown in Fig. 3 will be described in detail below.In embodiments of the present invention, field strength threshold value network-building method
It may comprise steps of：
Step S210, host node 10 broadcast actual beacon frame.
Understandably, host node 10 just broadcasts actual beacon frame every preset duration, for the actual beacon broadcasted every time
Frame is to calculate field strength threshold value and carry out networking.I.e. each communication node just carries out step S210- step S280 every preset duration,
Namely according to the automatic networking again of communication connection situation of current each communication node, and then the communication network improved is reliable
Property.Preferably, the broadcast mode is radio broadcasting.Wherein, actual beacon frame can be configured according to actual conditions, when this is default
Length can be configured according to actual conditions.
Step S220, for each from node 20, when receiving the actual beacon frame first, regenerate the actual beacon
Frame and the actual beacon frame for broadcasting forwarding regeneration.
Understandably, the actual beacon frame broadcasted every time for host node 10, step S220 will be carried out.Wherein, step
S220 can specifically include monitoring the actual beacon frame in the respectively signal intensity from node 20 and the direction of propagation, to obtain correspondingly
Field strength data；By obtained field strength data record be stored in corresponding to from node 20 so that send the master of the actual beacon frame/
Corresponding field strength data can be collected from node 20 from node 20 from each of the actual beacon frame is received.
Further, the field strength data obtained include receiving signal intensity and the direction of propagation of the actual beacon frame.
Wherein the direction of propagation for broadcast actual beacon frame master/slave node 20 to receive the actual beacon frame from node 20, in order to
Field strength data are acquired.Wherein, the signal intensity that the actual beacon frame of autosynthesis is sent from node 20 can be with main section
The signal intensity that point 10 is sent is identical, can also be different, can be configured according to actual conditions, is not especially limited here.
Step S230, the host node 10 send acquisition, receive the acquisition that the host node 10 is sent
The field strength data respectively recorded from node 20 are reported from node 20 to the host node 10.
In the present embodiment, respectively from node 20 by preserving the actual beacon frame pair sent from host node 10/ from node 20
The field strength data answered, when the host node 10 for sending the actual beacon frame sends acquisition, it can will receive the acquisition
Reported from the field strength data of the stored record of node 20, and be finally collected to host node 10, in order to which host node 10 is according to each field strength
Data calculate field strength threshold value and carry out networking according to the field strength threshold value of calculating.
Step S240, the host node 10 will report the field strength data to the host node 10 from node 20 as the 1st
Layer records the 1st layer of field strength data reported from node 20 from node 20.
Understandably, by that to the field strength data will be reported to be identified to the host node 10 from node 20, can obtain
To the 1st layer from node 20, that is, the 1st layer respectively from node 20 formed with the 1st layer of level identities information.In addition, pass through note
The 1st layer of field strength data reported from node 20 are recorded, contribute to host node 10 to calculate the 1st layer from node according to the field strength data of record
20 field strength threshold value, with and according to the field strength threshold value of this layer, to filter out field intensity signal larger from node 20, logical to enter as group
The communication node of communication network.Wherein,
Step S250, kth layer send acquisition from node 20, receive the collection that the kth layer is sent from node 20
The field strength data that record is reported from node 20 to the kth layer from node 20 of order, wherein, k is the integer more than or equal to 1.
Step S260, the kth layer from node 20 using report the field strength data from node 20 as+1 layer of kth from section
Point 20, records described+1 layer of field strength data reported from node 20 of kth.
In the present embodiment, it is determined that the 1st layer after node 20, the 1st layer can send acquisition from node 20, with
Collect except the 1st layer of other field strength data recorded from node 20 in addition to node 20.And receive the acquisition from section
Point 20 will report its field strength data, and report field strength data can be identified as the 2nd layer from node 20 from node 20；Then, the 2nd layer
Continue to send acquisition from node 20, to collect other as the field strength data from node 20 that are divided level, to obtain the 3rd
Layer it is each from node 20, and be identified, and circulated with this, respectively will successively carry out division mark from node 20.Wherein, division
Level can set level threshold value, and the level threshold value can be configured according to actual conditions.Such as when will be divided into from node 20
Corresponding to level threshold value during level, it can stop to being divided from node 20.
Alternatively, the kth layer successively collects the corresponding field strength data from node 20 from node 20, described in collection from
Stop collecting when the level of node 20 is default level, the default level can be above-mentioned level threshold value, can be according to actual feelings
Condition is configured.
Step S270, chooses the field strength data of the nonzero value in the field strength data that each layer reports from node 20, and calculates choosing
The characteristic value of the field strength data taken, and field strength threshold value corresponding to each level is worth to by the feature.
In the present embodiment, every layer of field strength data from node 20 can wrap as a data acquisition system, the characteristic value
Include one or more groups in the data such as the average value of field strength data, minimum value, maximum, intermediate value in each layer data set
Close.And according to this feature value, field strength threshold value corresponding to each level can be obtained.
Step S280, field strength data in each level are formed into communication network not less than the field strength threshold value from node 20.
In step S280, for the 1st layer from node 20, the field strength data are chosen from node 20 from described 1st layer
Not less than the field strength threshold value from node 20；Selection is connected from node 20 with the host node 10, it is described logical to form
Communication network.
For each+1 layer of kth from node 20, being chosen from the kth layer from node 20 makes each from node of+1 layer of kth
20 receive the kth layer of the field strength data of the actual beacon frame not less than+1 layer of field strength threshold value of kth from node 20；Alternatively,
One is chosen from the kth layer selected from node 20 to connect from node 20 with corresponding+1 layer of kth from node 20, described in forming
Communication network.Preferably, the communication node for being used to connect from node 20 be connected+1 layer of kth of selection be make+1 layer of the kth from
The maximum kth layer of the field strength data of node 20 is from node 20.
Each communication node there may be different communication connection situations in different periods, that is, exist strong during signal of communication
When weak situation.This programme from node 20 by when preset duration progress networking, each networking, respectively receiving default letter
Mark frame after can record field strength data corresponding to the beacon frame, respectively from node 20 by surroundings nodes field intensity information record end after,
Host node 10 will initiate order to respectively collecting field strength data from node 20, be each layer to obtain and preserve these field strength data
Secondary field strength threshold calculations provide data foundation.It is, scheme provided by the invention recorded according to current primary node 10 it is each
A field strength threshold value of suitable present communications connection state is calculated from the field intensity information of node 20, and then improves the communication network of composition
The reliability of network, help to improve the communication connection situation of the weaker communication node of signal of communication, and then improve the communication of composition
The stability of network.
Fig. 4 is refer to, is the field strength threshold value network device 100 that present pre-ferred embodiments provide.The field strength threshold value networking
Device 100 can apply to above-mentioned multiple communication nodes, and the communication node includes host node 10 and multiple from node 20.Should
Field strength threshold value network device 100 is engaged with field strength threshold value network-building method, to carry out networking to multiple communication nodes.Improve group
Reliability in network process, and be favorably improved the reliability of the communication network of composition, that is, can improve host node 10 with
From node 20, from node 20 and from the communication signal strength between node 20.Wherein, the field strength threshold value network device 100 can be with
Including the first radio unit 110, the second radio unit 120, the first collecting unit 130, the collection of the first recording unit 140, second
Unit 150, the second recording unit 160, choose computing unit 170 and networking unit 180.
Wherein, the first radio unit 110, for making the host node 10 broadcast actual beacon frame.Specifically, the first broadcast
Unit 110 can be used for performing the step S210 shown in Fig. 3, and specific operating procedure can refer to retouching in detail to step S210
State, repeat no more here.
First collecting unit 130, for making the host node 10 send acquisition, receive the host node 10 and send
Acquisition reported from node 20 to the host node 10 respectively from node 20 record field strength data.Specifically, first adopt
Collection unit 130 can be used for performing the step S230 shown in Fig. 3, and specific operating procedure can refer to retouching in detail to step S230
State, repeat no more here.
In summary, the present invention provides a kind of field strength threshold value network-building method and device.This method and device are based on field strength threshold
Value carries out networking to host node and respectively from node, to form communication network, that is, the communication link based on current each communication node
Connect situation and carry out networking, to improve the stability and reliability of the communication network formed.Specifically, scheme provided by the invention is led to
Host node broadcast actual beacon frame is crossed, from node received beacon frame and corresponding field strength data is obtained, receives actual beacon frame
Will regenerate the actual beacon frame from node, and the actual beacon frame is broadcasted, actual beacon frame can be received to expand
The quantity from node；For receive actual beacon frame from node, its field strength data is not less than corresponding field strength threshold value
From node and send the host node of the actual beacon frame or successively carry out networking from node, to form the communication network of cascade.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of field strength threshold value network-building method, it is characterised in that applied to multiple communication nodes, the communication node includes main section
Point and multiple include from node, methods described：
The host node broadcasts actual beacon frame；
For each described from node, when receiving the actual beacon frame first, regenerate the actual beacon frame and broadcast and turn
Send out the actual beacon frame of regeneration；
The host node sends acquisition, receive the acquisition that the host node is sent from node to the host node
Report respectively from the field strength data of nodes records；
The host node will report the field strength data to the host node from node as the 1st layer from node, record the described 1st
The field strength data that layer reports from node；
Kth layer sends acquisition from node, receive the acquisition that the kth layer is sent from node from node to described
Kth layer reports the field strength data of record from node, wherein, k is the integer more than or equal to 1；
The kth layer from node using report the field strength data from node as+1 layer of kth from node, record the kth+1
The field strength data that layer reports from node；
The field strength data of the nonzero value in the field strength data that each layer reports from node are chosen, and calculate the spy of the field strength data of selection
Value indicative, and field strength threshold value corresponding to each level is worth to by the feature；
Field strength data in each level are formed into communication network not less than the field strength threshold value from node.
2. according to the method for claim 1, it is characterised in that it is described for each described from node, received first
During the actual beacon frame, the step of regenerating the actual beacon frame and broadcast the actual beacon frame of forwarding regeneration, including：
The actual beacon frame is monitored in the respectively signal intensity from node and the direction of propagation, with field strength data corresponding to obtaining；
By obtained field strength data record be stored in corresponding to from node so that the master/slave node for sending the actual beacon frame can
From receive the actual beacon frame it is each from node collect corresponding to field strength data.
3. according to the method for claim 1, it is characterised in that the kth layer will report the field strength data from node
From node as+1 layer of kth from node, record+1 layer of the kth from the field strength data that node reports the step of, including：
The kth layer successively collects the corresponding field strength data from node from node, from the level of node is being pre- described in collection
If stop collecting during level.
4. according to the method for claim 1, it is characterised in that described that field strength data in each level are not less than the field strength
Threshold value from node form communication network the step of, including：
The field strength data are chosen from described 1st layer from node not less than the field strength threshold value from node；
Selection is connected from node with the host node, to form the communication network.
5. according to the method for claim 4, it is characterised in that described that field strength data in each level are not less than the field strength
Threshold value from node form communication network the step of, including：
Being chosen from the kth layer from node makes each field strength data that the actual beacon frame is received from node of+1 layer of kth
Maximum kth layer is from node；
By kth ,+1 layer communicates to connect from node with the kth layer of corresponding selection from node, to form the communication network.
6. a kind of field strength threshold value network device, it is characterised in that applied to multiple communication nodes, the communication node includes main section
Point and multiple include from node, the field strength threshold value network device：
First radio unit, for making the host node broadcast actual beacon frame；
Second radio unit, for for each described from node, when receiving the actual beacon frame first, make corresponding to
The actual beacon frame is regenerated from node and broadcasts the actual beacon frame of forwarding regeneration；
First collecting unit, for making the host node send acquisition, receive the acquisition that the host node is sent
Reported from node to the host node respectively from the field strength data of nodes records；
First recording unit, for making the host node to report the field strength data to the host node from node as the 1st
Layer is from node, so that the host node records the 1st layer of field strength data reported from node；
Second collecting unit, for making kth layer send acquisition from node, receive the kth layer and adopted from what node was sent
Collect the field strength data that record is reported from node to the kth layer from node of order, wherein, k is the integer more than or equal to 1；
Second recording unit, for make the kth layer from node using report the field strength data from node as+1 layer of kth from
Node, so that the kth layer is from+1 layer of field strength data reported from node of kth described in nodes records；
Computing unit is chosen, the field strength data of the nonzero value in the field strength data reported for choosing each layer from node, and calculate
The characteristic value of the field strength data of selection, and field strength threshold value corresponding to each level is worth to by the feature；
Networking unit, for field strength data in each level to be formed into communication network from node not less than the field strength threshold value.
7. field strength threshold value network device according to claim 6, it is characterised in that second radio unit is additionally operable to：
The actual beacon frame is monitored in the respectively signal intensity from node and the direction of propagation, with field strength data corresponding to obtaining；
By obtained field strength data record be stored in corresponding to from node so that the master/slave node for sending the actual beacon frame can
From receive the actual beacon frame it is each from node collect corresponding to field strength data.
8. field strength threshold value network device according to claim 6, it is characterised in that second recording unit is additionally operable to：
The kth layer successively collects the corresponding field strength data from node from node, from the level of node is being pre- described in collection
If stop collecting during level.
9. field strength threshold value network device according to claim 6, it is characterised in that the networking unit is additionally operable to：
The field strength data are chosen from described 1st layer from node not less than the field strength threshold value from node；
Selection is connected from node with the host node, to form the communication network.
10. field strength threshold value network device according to claim 9, it is characterised in that the networking unit is additionally operable to：
Being chosen from the kth layer from node makes each field strength data that the actual beacon frame is received from node of+1 layer of kth
Maximum kth layer is from node；
By kth ,+1 layer communicates to connect from node with the kth layer of corresponding selection from node, to form the communication network.
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