CN110234146A - Distributed self-adaption cluster-dividing method suitable for self-organizing network - Google Patents
Distributed self-adaption cluster-dividing method suitable for self-organizing network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/32—Connectivity information management, e.g. connectivity discovery or connectivity update for defining a routing cluster membership
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/34—Modification of an existing route
- H04W40/36—Modification of an existing route due to handover
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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
A kind of distributed self-adaption cluster-dividing method suitable for self-organizing network disclosed by the invention, it is desirable to provide one kind can reduce network-control expense, promote the distributed self-adaption cluster-dividing method of network spectrum utilization rate and network energy efficiency.The technical scheme is that: in ad hoc networks, each network node construction basis self-organizing network protocol and neighbor node periodically carry out environment sensing, self study and the self-decision three zones module of control information exchange, each network node utilizes the ability of wireless transport module and neighbor node interactive control information within the control period of this node, the Clustering control information of neighbor node is received by radio receiving unit, and the Clustering control information reporting for the neighbor node that radio receiving unit is got is to environment sensing functional module；Circulation executes cluster head selection process, cluster head replacement process, cluster head switching flow, sub-clustering fission process and sub-clustering and merges process, optimizes cluster head selection in real time.
Description
Technical field
The present invention relates to a kind of distributed self-adaption cluster-dividing methods suitable for self-organizing network.
Background technique
Self-organizing network (AdHoc) passes through spontaneous form the nothing of distributed networking protocol by several mobile nodes
Center multihop network.Self-organizing network can efficiently handle the problems such as network topology change, transmission link failure, have very strong
Flexibility and survivability.As a kind of distributed network, mobile ad-hoc network is a kind of autonomous, multihop network, entire net
The infrastructure that network is not fixed, can be it cannot utilize or inconvenience is using network infrastructure (such as base station, AP)
In the case of, being in communication with each other between terminal is provided.Since the transmission power and wireless coverage of terminal are limited, distance compared with
Two remote terminals must be grouped forwarding, structure between such node if being communicated by means of other intermediate nodes
At a kind of wireless multi-hop network.It is worth noting that, multi-hop road in wireless self-networking different from the multi-hop in general networking
By being the completion that cooperated jointly by ordinary node, rather than completed by special routing device.It is different from the bee of default base station
Nest network, self-organizing network assigns all-network node and neighbor node periodically carries out the ability of control information exchange, allows
Network node constructs the wireless communication system without any default infrastructure anywhere, any time.In self-organization network
In network, network node is communicated by wireless transmitter, with neighbor node interactive control information and data service.Due to nothing
The network bandwidth that line communication can be provided will be much smaller than the network bandwidth of wire communication, and the network that self-organizing network can be provided holds
Measure the network capacity also much smaller than cable network.In addition, self-organizing network often works in more severe field environment, network
Node may rely solely on the limited energy such as battery and be powered.Therefore, limited bandwidth resources how to be effectively utilized
The network spectrum utilization rate and network energy efficiency that self-organizing network is promoted with limited energy resource are exactly that cluster-dividing method closes
The problem of note.
Under wireless self-organizing network environment, Radio Link between node and the network topology structure formed therefrom are with node
Position distribution and the factors such as movement, the variation of channel show the characteristic of dynamic change.The dynamic change envoy of topological structure
The acquisition of link-state information and management service are difficult between point.Due between adjacent node exist " hidden terminal ", " exposed terminal ",
" intrusion terminal " etc. interferes with each other, so that wireless chaining status is difficult to determine, such as the links such as bandwidth, time delay, delay variation ginseng
Number is all difficult acquisition and updating maintenance in time.Wireless self-organization network have two different hierarchical structures: planar structure and point
Layer structure.In planar structure, all nodes it is equal, therefore, also known as peer-to-peer structure.Each section in planar structure
Point requires to know the routing for reaching other all nodes.Due to the mobility of node, it is a large amount of to safeguard that this dynamic routing needs
Control information.Network size is bigger, and the expense of route maintenance is bigger.So the network scalability of planar structure is poor.
Hierarchical structure needs corresponding cluster algorithm and cluster maintenance mechanism.In the self-organizing network (AdHoc) of hierarchical structure, cluster head is negative
The communication between the communication and this bunch member node and other bunch member nodes in this cluster between member node is blamed, therefore, how
Dynamic select goes out most reasonable node and serves as cluster head, becomes the critical issue of cluster algorithm.In addition, since node adds whenever and wherever possible
Enter or remove, network link is easy to disconnect at any time, influences telecommunication service quality.In the structure of classification, due to leader cluster node
Not only to safeguard the routing iinformation for reaching other cluster heads, but also to safeguard with member in this cluster member and this cluster and member it
Between communication.Therefore, the task of leader cluster node is quite heavy, and since the resource of wireless communication is limited, it is therefore desirable to a kind of good
Good cluster structured and routing algorithm, to safeguard the service quality of hierarchical self-organizing network routing and communication.It is typical at present
Cluster algorithm has minimum ID cluster algorithm, highest node degree cluster algorithm, minimum mobility cluster algorithm and is based on node motion
Property forecast cluster algorithm etc..Minimum ID cluster algorithm selects cluster head according to node ID, which simply easily realizes.When node moves
When dynamic property is stronger, cluster head renewal frequency is higher, and cluster maintenance costs are larger.Highest node degree cluster algorithm chooses node degree and is greater than institute
Having the node of uncovered neighbors becomes cluster head, when node degree is identical, chooses the node with smaller ID as cluster head.
The algorithm does not account for the factors such as load balance.Minimum mobility cluster algorithm elects cluster according to the ambulant weight of node
Head.The cluster head computing cost of the algorithm is larger, does not consider the energy loss problem of load balance and node.Based on node mobility
The cluster algorithm of forecast is to forecast the movement tendency of mobile node, Jin Erxuan by learning the mobile historical behavior of mobile node
Cluster head out.The algorithm is not suitable for often changing path, without the self-organizing network of habitually mobile behavior.
Self-organizing network allows each network node to be communicated with the arbitrary node in the communication coverage of the node.
As shown in figure 5, each node possesses a unique node ID, the ID number of 32 nodes is respectively 1,2 ..., 32.Wherein, it saves
Contain 8 hop neighbor nodes in the communication coverage of point 12, constitutes 8 communication links.Although this flexible networking
Characteristic is that data transmission is provided convenience, but intricately network physical topological structure makes the control for safeguarding network topological information
Signaling overheads is huge, causes control signaling that may occupy excessive wireless signal-path band width resource.In addition, in this flat object
It manages under topological structure, each network node is required to the nodal information of the whole network, it is desirable that the continually broadcast control of each network node
Signaling processed, to exacerbate the energy consumption of network node.
The main technical schemes of the prior art have:
Highest node degree cluster-dividing method: this method carries out election of cluster head according to neighbor list, and neighbor node number is most in adjacent node
High node becomes cluster head, and a hop neighbor node of cluster head automatically becomes the cluster member of the cluster head.This method is simple in rule and holds
It is easy to operate, but the scale of sub-clustering be difficult to control, be easy due to the quantity of sub-clustering member it is unbalanced and cause network congestion and
Network resource utilization decline.
Cluster-dividing method based on node location: this method requires node to pass through the positioning devices or network distance measurement etc. such as GPS
Algorithm estimates the geographical location of this node in ad hoc networks, and obtains substantially opening up for network using neighbor list information interaction
Structure is flutterred, to construct using more balanced cluster algorithm cluster structured.This method being capable of effectively maintenance cluster number of members
The harmony of amount, but additional positioning device or location algorithm are needed, bring higher complexity and control overhead.
Existing technical solution is confined to single sub-clustering rule, although control overhead can be reduced to a certain extent,
But it can not effectively take into account self-organizing network cluster dividing and connect in the cluster head selection of optimization, balanced sub-clustering scale, stable network
The logical performance requirement for waiting various dimensions.
In ad hoc networks, the network topology node of dynamic change have any mobility, and can be added at any time and
It leaves.Meanwhile radio propagation conditions quickly change, such as send variation, landform and the influence of weather factor of power, mobile terminal
Between the network topology that is formed by wireless channel may also change at any time.The network bandwidth that wireless channel can be provided relative to
Wire channel also wants much lower.The transmission power of multihop routing radio node is limited, and the spread scope of signal is also limited.Wirelessly
Node needs intermediate node assistance to be stored and forwarded, to realize the data communication of source node and destination node.Cluster-dividing method
By the cluster structured chain number that can efficiently reduce self-organizing network of construction logic topology, network is greatly reduced
Control overhead reduces the frequency of bunch member node Broadcasting Control signaling, saves the energy consumption of a large amount of network nodes, extends from group
The life span of knitmesh network, more efficiently support Routing Protocol and resource management protocols.However, cluster structured possible influence network
The stability and connectivity of link, be easy to cause network data flow congestion.Therefore, in the cluster-dividing method of self-organizing network how
Optimize cluster head selection, balanced sub-clustering scale, Logistics networks connectivity is exactly to solve the problems, such as required for the present invention.
Summary of the invention
The purpose of the present invention is places in view of the shortcomings of the prior art, provide one kind and can reduce network-control and open
Pin promotes network spectrum utilization rate and network energy efficiency, the distribution suitable for self-organizing network of Logistics networks connectivity
Adaptive cluster-dividing method.
Above-mentioned purpose of the invention can be obtained by following measures, it is a kind of suitable for self-organizing network it is distributed from
Cluster-dividing method is adapted to, there is following technical characteristic:
In ad hoc networks, each network node construction basis self-organizing network protocol is periodically controlled with neighbor node
Environment sensing, self study and the self-decision three zones module of information exchange processed execute cluster head selection process, cluster head replacement stream
Journey, cluster head switching flow, sub-clustering fission process and sub-clustering merge process；Each network node is sharp within the control period of this node
With the ability of wireless transport module and neighbor node interactive control information, the sub-clustering of neighbor node is received by radio receiving unit
Information is controlled, and the Clustering control information reporting for the neighbor node that radio receiving unit is got is to environment sensing function mould
Block；Environment sensing functional module counts the Clustering control information of neighbor node within each control period, and by this node two
It jumps the neighbor list information in range, sub-clustering status information, connection cluster head aggregate information and cluster head value information and is reported to self-study
Practise functional module；The Clustering control information for the neighbor node that self-learning function module is obtained using environment sensing functional module, will
The Clustering control information abstraction of all neighbor nodes at localized network sub-clustering state change information, according to predefined sub-clustering shape
The sub-clustering state change information of localized network is refined in the definition of state jump condition and two cluster head set, by cumbersome node point
Cluster information compression is transferred to self-decision functional module at clearly network cluster dividing information；Self-decision functional module utilizes self study function
The sub-clustering state change information sub-clustering role current according to this node for the localized network that can be refined and corresponding sub-clustering state
Jump condition is adaptively adjusted the sub-clustering state of this node, and circulation executes cluster head selection process, cluster head replacement process, cluster head and cuts
Change of current journey, sub-clustering fission process and sub-clustering merge process, and network node is adaptively located according to neighbor list information
The dynamic change and network cluster dividing state change of network topology are managed, optimizes cluster head selection in real time.
It can be seen from the above technical proposal that the distributed self-adaption sub-clustering proposed by the present invention suitable for self-organizing network
Method has the advantages that compared with the prior art.
The present invention is adaptively constructed cluster structured using environment sensing, self study and self-decision three zones module.It is first
First, environment sensing is that network node is listened in real time using the ability with neighbor node interactive control information and stores neighbor node
Clustering control information process；Secondly, self study can utilize the Clustering control of the obtainable neighbor node of environment sensing function
Information refines the sub-clustering state change of localized network according to the definition of eight kinds of sub-clustering state jump conditions and two cluster head set
Information, by cumbersome node clustering information compression at clearly network cluster dividing information；Finally, self-decision can utilize self study function
The sub-clustering state change information for the localized network that can be refined, it is adaptive according to this node clustering role and sub-clustering state jump condition
Adjust the sub-clustering state of this node with answering.Therefore, each network node can be dynamically maintained by adaptive cluster-dividing method from group
Knitmesh network it is cluster structured, realize self-organizing network cluster dividing in the selection of optimization cluster head, balanced sub-clustering scale, Logistics networks connection etc.
The optimization aim of various dimensions reduces network-control expense, promotes network spectrum utilization rate and network energy efficiency.Secondly, this hair
It is bright that process and cluster head switching flow are replaced using cluster head selection process, cluster head；In cluster head selection process, cluster node to be entered can
It is leader cluster node that the higher cluster head of cluster head weight, which is added, according to candidate cluster head Resource selection or promotes this node；It is replaced in cluster head
In process, when network node finds what the neighbor node of this node and this node formed according to neighbor list information within the scope of double bounce
It, can be adaptively by the sub-clustering of this node when set is the true superset of the set of some neighbours' cluster head and its neighbor node composition
Promotion of role is leader cluster node；In cluster head switching flow, when leader cluster node is according to neighbor list information discovery within the scope of double bounce
It is connection between all neighbours' cluster heads of this node and all neighbours' cluster heads and the union of their neighbor node are these
When the superset of the set of the neighbor node of node and this node composition, can adaptively it set the sub-clustering role of this node to
Bunch member node simultaneously notifies the cluster member of this cluster to carry out cluster head switching；Therefore, the present invention selects process, cluster head to replace by cluster head
Process and cluster head switching flow enable network node adaptively to handle the dynamic of network topology according to neighbor list information
Variation, to achieve the purpose that optimization cluster head selection in real time.The present invention selects machine compared with the prior art, by optimization cluster head
System can obtain it is more preferably cluster structured, to achieve the purpose that promote network spectrum utilization rate and network energy efficiency；
The present invention enables network cluster dividing according to from group using the sub-clustering scale design sub-clustering fission process of number of nodes equilibrium
The cluster member of maximum cluster member capacity limit and each cluster head that knitmesh network is pre-configured dynamically balanced sub-clustering scale, works as cluster head
Node has received the new number for entering cluster application and current cluster member and adds newly to enter the number of cluster member and reach preset maximum
When cluster member's capacity limit, the node which selects neighbor node number most from the cluster member of this cluster is as new cluster
Head notifies the cluster member of new cluster head and this cluster to carry out sub-clustering fission operation, to reach sub-clustering scale by Clustering control information
It is adaptive to the effect of network node density, the probability of network data flow congestion can be effectively reduced.Therefore, compared to existing
Technology, the present invention can reach the mesh of balanced sub-clustering scale under conditions of not needing additional positioning device or location algorithm
, prevent network data flow while reducing network transmission link number and congestion occurs.
The present invention devises sub-clustering merging process using the cluster structured of guarantee connectivity, and network cluster dividing can be according to connection
Cluster head set dynamically ensures the cluster structured connectivity of self-organizing network, when in the connection cluster head set of some neighbor node
Minimum node ID not equal to this node connection cluster head set in minimum node ID when, illustrate current self-organizing network divide
Clustering architecture destroys connectivity of each network node in physical topological structure, this node divides sub-clustering role and sub-clustering state
It is not set as leader cluster node and sub-clustering merging phase, and indicates the neighbor node by sub-clustering promotion of role by Clustering control information
For leader cluster node, the connectivity between network cluster dividing is repaired, enables distributed self-adaption cluster-dividing method real-time guarantees network
Cluster structured connectivity, to reach the mesh for keeping the transmission of network data multi-hop relay while reducing network-control expense
's.Therefore, compared with the prior art, the node for maintaining network connectivty adaptively can be promoted to cluster head section by the present invention
Point achievees the purpose that excavate multi-hop relay transmission gain to effectively ensure the connectivity of self-organizing network.
The present invention is applied to the numerous areas such as aviation, explosion-proof, the disaster relief, environment, medical treatment, health care, household, industry, business.
Detailed description of the invention
Fig. 1 is the functional block diagram of distributed self-adaption sub-clustering of the present invention.
Fig. 2 is the cluster structured schematic diagram of self-organizing network.
Fig. 3 is the environment sensing of Fig. 1 and the process flow diagram of self-learning function module.
Fig. 4 is the process flow diagram of the self-decision functional module of Fig. 1.
Fig. 5 is the physical topological structure schematic diagram of self-organizing network.
Specific embodiment
Referring to Fig. 1.According to the present invention, in ad hoc networks, each network node construction basis self-organizing network protocol
Environment sensing, self study and the self-decision three zones module that control information exchange is periodically carried out with neighbor node, execute
Cluster head selects process, cluster head replacement process, cluster head switching flow, sub-clustering fission process and sub-clustering to merge process；Each network section
Point utilizes the ability of wireless transport module and neighbor node interactive control information within the control period of this node, by wirelessly connecing
Receive the Clustering control information that unit receives neighbor node, and the Clustering control letter for the neighbor node that radio receiving unit is got
Breath is reported to environment sensing functional module；Environment sensing functional module counts the sub-clustering of neighbor node within each control period
Control information, and by the neighbor list information within the scope of this node double bounce, sub-clustering status information, connection cluster head aggregate information and cluster
Head value information is reported to self-learning function module；Self-learning function module is saved using the neighbours that environment sensing functional module obtains
The Clustering control information of point believes the Clustering control information abstraction of all neighbor nodes at the sub-clustering state change of localized network
Breath, according to the definition of predefined sub-clustering state jump condition and two cluster head set, the sub-clustering state for refining localized network becomes
Change information, cumbersome node clustering information compression is transferred to self-decision functional module at clearly network cluster dividing information；Decide by oneself
The sub-clustering current according to this node of the sub-clustering state change information for the localized network that plan functional module is refined using self-learning function
Role and corresponding sub-clustering state jump condition are adaptively adjusted the sub-clustering state of this node, and circulation executes cluster head selection stream
Journey, cluster head replacement process, cluster head switching flow, sub-clustering fission process and sub-clustering merge process, enable network node foundation
Neighbor list information adaptively handles the dynamic change and network cluster dividing state change of network topology, optimizes cluster head choosing in real time
It selects.
In cluster head selection process, it is higher that cluster head weight can be added according to candidate cluster head Resource selection in cluster node to be entered
Cluster head promotes this node as leader cluster node；In cluster head replacement process, when network node is according to neighbours' column within the scope of double bounce
The set of the neighbor node of this node of table INFORMATION DISCOVERY and this node composition is some neighbours' cluster head and its neighbor node composition
It can be adaptively leader cluster node by the sub-clustering promotion of role of this node when the true superset of set；In cluster head switching flow,
When be between all neighbours' cluster heads that leader cluster node finds this node according to neighbor list information within the scope of double bounce connection and
All neighbours' cluster heads and the union of their neighbor node are the super of the set of this node and the neighbor node composition of this node
When collection, bunch member node adaptively can be set by the sub-clustering role of this node and the cluster member of this cluster is notified to carry out cluster head
Switching.
In sub-clustering fission process, added when leader cluster node has received the new number for entering cluster application and current cluster member
When newly entering the number of cluster member and reaching preset maximum cluster member's capacity limit, which selects from the cluster member of this cluster
The most node of neighbor node number notifies the cluster member of new cluster head and this cluster to divide as new cluster head, by Clustering control information
Cluster fission operation；Merge in process in sub-clustering, when the minimum node ID in the connection cluster head set of some neighbor node is not equal to
When minimum node ID in the connection cluster head set of this node, sub-clustering role and sub-clustering state are respectively set to cluster head by this node
Node and sub-clustering merging phase, and by Clustering control information indicate the neighbor node by sub-clustering promotion of role be leader cluster node；
Self-decision functional module constructs the Clustering control information of this node and inputs the wireless transmission unit progress of wireless transport module extensively
It broadcasts and send.
In an alternate embodiment of the invention, wireless transport module is believed by the Clustering control that radio receiving unit receives neighbor node
Breath.Each network node is within the control period of this node, the Clustering control for the neighbor node that radio receiving unit is got
Information reporting is to environment sensing functional module.Clustering control information includes cluster head weight, sub-clustering state and the mesh of the neighbor node
Node ID, connection cluster head set and neighbor list, wherein cluster head weight indicates that the neighbor node is cut out for leader cluster node
Degree, the higher node of cluster head weight the suitable to serve as leader cluster node in ad hoc networks；Sub-clustering state include apply into cluster,
Cluster member, cluster head, cluster head replacement, cluster head switching, sub-clustering fission and sub-clustering merge totally seven kinds of states, sub-clustering state and destination node
The clustering operation and it is cooperated to complete sub-clustering that ID shows the sub-clustering role of the neighbor node and the neighbor node is carrying out
The destination node of operation；Connection cluster head set includes all leader cluster nodes that the neighbor node can be connected to, and can be used for judging dividing
The connectivity of clustering architecture in ad hoc networks；Neighbor list includes all neighbor nodes of the neighbor node, shows the neighbour
Occupy the local topology of node in ad hoc networks.
The Clustering control information for all neighbor nodes that environment sensing functional module will acquire is according to neighbor list, sub-clustering
Four kinds of state, connection cluster head set and cluster head weight classifications carry out classification storage, wherein neighbor list information, which is shown, to be conducive to
This section point carries out cluster head optimum choice and judges within the scope of this node double bounce of connected relation of this node and specified cluster head
Physical topological structure；Sub-clustering statistic is conducive to the institute of this node of the sub-clustering state change of this section point analysis localized network
The clustering operation for having the sub-clustering role of neighbor node and being carrying out；Connection cluster head set, which summarizes, is conducive to this section point analysis
The union for the cluster head that all neighbor nodes of this node of the cluster structured connectivity of localized network can be connected to；Cluster head weight
All neighbor nodes of this node are ranked up according to the degree for being cut out for cluster head, are conducive to cluster head optimum choice.Environment
Perceptional function module counts the Clustering control information of neighbor node and by the neighbor list information within the scope of this node double bounce, sub-clustering
Status information, connection cluster head aggregate information and cluster head value information are reported to self-learning function module.Self-learning function module causes
Power is in the sub-clustering state change information by the Clustering control information abstraction of all neighbor nodes at localized network.Self-learning function mould
Block enters cluster condition, cluster head switching condition, sub-clustering fission condition, neighbours' merging shape according to predefined cluster head replacement condition, successfully
Whether state, this cluster fission, whether cluster head switches, sub-clustering merges condition, connection cluster head set and candidate cluster head collection amount to eight kinds of shapes
The sub-clustering state change information of state jump condition and the localized network within the scope of two cluster head set analysis this node double bounces.It learns by oneself
It practises functional module and the analysis result of totally eight kinds of state jump conditions and two cluster head set is transferred to self-decision functional module.From
The decision making function module sub-clustering role current according to this node extracts corresponding sub-clustering state jump condition and is adaptive selected most
Excellent sub-clustering state.Self-decision functional module constructs the Clustering control information of this node and inputs the wireless hair of wireless transport module
Unit is sent to carry out broadcast transmission, to achieve the purpose that cluster structured to be adaptive to network cluster dividing state change.
Referring to fig. 2.In ad hoc networks, by distributed self-adaption cluster-dividing method, network node 10,12,14,15,
18,19,21,23 are defined as leader cluster node, and the sub-clustering closed on is adaptively added in other network nodes；Cluster member-cluster head
Link is the one hop link in cluster, safeguards that the data in cluster are transmitted, and multi-hop link of the link between cluster between cluster head, between maintenance cluster
Data transmission.Each network node periodically carries out control information exchange according to self-organizing network protocol and neighbor node,
Adaptively become leader cluster node or bunch member node, by realizing in leader cluster node maintenance and management cluster and cluster-level routing information
Self-organizing network it is cluster structured.
Clustering control information includes source node ID, cluster head weight, sub-clustering state and destination node ID, connection in title-domain
Cluster head set and neighbor list, wherein the content of source node ID is the ID of sending node；The content of cluster head weight is sending node
Normalization cluster head weight.
Referring to table 1.The sample table of Clustering control information is given in table.
The sample table of 1 Clustering control information of table
The sample table of 1 Clustering control information of table
Sub-clustering state includes 7 kinds of states, serial number 0,1 ..., 6；No. 0 sub-clustering state is to apply into cluster, and destination node ID is to refer to
Fixed cluster head ID；No. 1 sub-clustering state is cluster member, and destination node ID is the cluster head ID of this cluster；No. 2 sub-clustering states are cluster head, mesh
Node ID be the whole network broadcast ID；No. 3 sub-clustering states are cluster head replacement, and destination node ID is the cluster head ID being replaced；No. 4 sub-clusterings
State is cluster head switching, and destination node ID is that ID is broadcasted in cluster；No. 5 sub-clustering states are sub-clustering fission, and destination node ID is new cluster
Head ID；No. 6 sub-clustering states are sub-clustering merging, and destination node ID is the cluster member id of specified adjacent cluster.It is connected to the interior of cluster head set
Holding includes the ID for being connected to the cluster head of cluster head number (Nc) and this Nc connection；The content of neighbor list includes neighbor node number
(Nb) and the ID of this Nb neighbor node.
Referring to Fig. 3.In the process flow of environment sensing and self-learning function module, environment sensing functional module 400 will
The Clustering control information content for the neighbor node that radio receiving unit reports is divided into neighbor list, sub-clustering state, connection cluster head
Then set and four class of cluster head weight input self-learning function module 401 and are transferred to execution self-learning function；Self-learning function mould
Block 401 extracts neighbor list information, sub-clustering status information, connection cluster head information and cluster head value information, and according to predefined
Cluster head replacement condition successfully enters whether cluster condition, cluster head switching condition, sub-clustering fission condition, neighbours' merging phase, this cluster split
Become, whether cluster head switches, sub-clustering merges condition, connection cluster head set and candidate cluster head collection amount to eight kinds of sub-clustering state jump conditions
With the sub-clustering state change information of the localized network within the scope of two cluster head set analysis this node double bounces；Wherein, eight kinds of sub-clusterings
State jump condition and the analytical procedure of two cluster head set are as follows:
Step 402, self-learning function module judges that cluster head replaces condition according to neighbor list information and sub-clustering status information, if this
The set of the neighbor node of node and this node composition is the true superset of the set of some neighbours' cluster head and its neighbor node composition,
Then cluster head replacement condition is set up；Otherwise, cluster head replacement condition is invalid；
Step 403, self-learning function module judges the condition for successfully entering cluster according to neighbor list information and sub-clustering status information；If
The sub-clustering state of the specified cluster head of this node is cluster head, and the neighbor list information of the cluster head includes this node ID, then succeeds
Enter the establishment of cluster condition；Otherwise, it is invalid successfully to enter cluster condition；
Step 404, self-learning function module judges cluster head switching condition according to neighbor list information and sub-clustering status information, if this
It is connection between all neighbours' cluster heads of node, and all neighbours' cluster heads and the union of their neighbor node are this section
The superset of the set of the neighbor node of point and this node composition, then cluster head switching condition is set up；Otherwise, cluster head switching condition not at
It is vertical；
Step 405, self-learning function module judges sub-clustering fission condition according to sub-clustering status information, if this node is cluster head and receipts
Enter cluster application to new, and the number of current cluster member add newly enter cluster member number be up to preset maximum cluster at
Member's capacity limit, then sub-clustering fission condition is set up；Otherwise, sub-clustering fission condition is invalid；
Step 406, self-learning function module judges adjacent cluster merging phase according to sub-clustering status information, if current control period memory
It is sub-clustering merging in the sub-clustering state of the cluster head of adjacent cluster, then the judging result of adjacent cluster merging phase is to be in merge shape in the presence of adjacent cluster
State；Otherwise, the judging result of adjacent cluster merging phase is to be in merging phase without adjacent cluster；
Step 407, self-learning function module judges whether this cluster fissions according to sub-clustering status information, if this section point receives this cluster cluster
The Clustering control information of head and the sub-clustering state of the cluster head are that sub-clustering is fissioned, then illustrate that this section point has received this cluster fission message；
Otherwise, illustrate that this node does not receive this cluster fission message；
Step 408, self-learning function module judges whether the cluster head of this cluster switches according to sub-clustering status information, if this section point receives
The Clustering control information of this cluster cluster head and the sub-clustering state of the cluster head are that cluster head switches, then illustrate that this section point has received this cluster cluster head
Handover request；Otherwise, illustrate that this node does not receive the handover request of this cluster cluster head；
Step 409, self-learning function module judges that sub-clustering merges condition according to connection cluster head set, if current control period memory
Minimum node ID in connection cluster head set of the minimum node ID in the connection cluster head set of neighbors not equal to this node,
Then sub-clustering merges condition and sets up；Otherwise, it is invalid to merge condition for sub-clustering；
Step 410, self-learning function module is according to sub-clustering state and the connection cluster head set for being connected to cluster head set and updating this node.
If this node is cluster head, connection cluster head collection conjunction of this node to all leader cluster nodes received in current control period
Union；Otherwise, the connection cluster head set of this cluster cluster head received in current control period is replaced with this section by this cluster member
The connection cluster head set of point；
Step 411, candidate cluster head set of the self-learning function module according to this node of sub-clustering status information and cluster head right value update,
The neighbor node ID that all sub-clustering states are cluster head is inserted into the merging of candidate cluster head collection and records its cluster head weight.
Referring to fig. 4.In the process flow of self-decision functional module, self-decision functional module is with the sub-clustering role of this node
Sub-clustering state transition flow is carried out for starting point, and exports the sub-clustering state of this node.
Step 500, self-decision functional module starts the transfer of sub-clustering state according to this node clustering role；If this node is complete
It is loaded at initialization but is never transmitted across Clustering control information, then the sub-clustering role of this node is cluster node to be entered, and is transferred to step
501 start self-decision function；If this node has been transmitted across Clustering control information, and the sub-clustering state of newest Clustering control information
To apply for that then the sub-clustering role of this node is to apply into cluster node into cluster, it is transferred to step 502 and starts self-decision function；If this section
Point has been transmitted across Clustering control information, and the sub-clustering state of newest Clustering control information is cluster member, the then sub-clustering of this node
Role is bunch member node, is transferred to step 503 and starts self-decision function；If three of the above condition is not satisfied, this node
Sub-clustering role is leader cluster node, is transferred to step 504 and starts self-decision function；
Step 501, this node executes the transfer of sub-clustering state with the sub-clustering role of cluster node to be entered, and is transferred to step 505 and judges cluster head
Replacement condition；
Step 502, this node is transferred to step 508 and judges into apply for that the sub-clustering role into cluster node executes the transfer of sub-clustering state
Function enters cluster condition；
Step 503, this node executes the transfer of sub-clustering state with the sub-clustering role of bunch member node, is transferred to step 510 and judges whether
Receive the handover request of this cluster cluster head；
Step 504, this node executes the transfer of sub-clustering state with the sub-clustering role of leader cluster node, is transferred to step 519 and judges that cluster head is cut
Change condition；
Step 505, if this node meets cluster head replacement condition, this node triggers cluster head and replaces process, and cluster head replaces process will
The sub-clustering promotion of role of this node is leader cluster node, so that specified neighbours' leader cluster node is because meet cluster head switching condition
And bunch member node is set by the sub-clustering role of neighbours' leader cluster node, it is transferred to step 530 and carries out the update of sub-clustering state；
Otherwise, be transferred to step 506 judge candidate cluster head set whether non-empty；
Step 506, if the candidate cluster head collection of this node is combined into sky, sub-clustering promotion of role is leader cluster node by this node, is transferred to
Step 529 carries out the update of sub-clustering state；Otherwise, it is transferred to step 507 triggering cluster head selection process；
Step 507, self-decision functional module executes cluster head and selects process, and cluster head selection process selects cluster from candidate cluster head set
The cluster head that the cluster head of head maximum weight is specified as this node, and this point is added by the Clustering control information applications of this node
Cluster is transferred to step 527 and carries out the update of sub-clustering state；
Step 508, if this node, which meets, successfully enters cluster condition, sub-clustering promotion of role is bunch member node by this node, is transferred to
Step 528 carries out the update of sub-clustering state；Otherwise, it is transferred to step 509 and updates candidate cluster head set；
Step 509, self-decision functional module removes the cluster head currently selected from candidate cluster head set, and updates candidate cluster head
Set, be transferred to step 506 judge candidate cluster head set whether non-empty；
Step 510, if this section point has received the handover request of this cluster cluster head, this node keeps sub-clustering role for cluster member section
Point is transferred to step 505 and judges that cluster head replaces condition；Otherwise, step 511 is transferred to judge whether to receive this cluster fission message；
Step 511, it if this section point has received this cluster fission message, is transferred to step 512 and carries out new cluster head judgement；Otherwise, it is transferred to
Step 516 judges that sub-clustering merges condition；
Step 512, if this node is the new cluster head that this cluster cluster head is specified, sub-clustering promotion of role is leader cluster node by this node,
It is transferred to step 529 and carries out the update of sub-clustering state；Otherwise, be transferred to step 513 judge new cluster head whether the neighbor node of this node；
Step 513, if new cluster head is the neighbor node of this node, it is bunch member node that this node, which keeps sub-clustering role, is transferred to
Step 514 updates destination node ID；Otherwise, it is bunch member node that this node, which keeps sub-clustering role, is transferred to step 515 and updates purpose
Node ID；
Step 514, the destination node ID of the Clustering control information of this node is changed to new cluster head ID by self-decision functional module, is turned
Enter step 527 and carries out the update of sub-clustering state；
Step 515, self-decision functional module keeps the destination node ID of the Clustering control information of this node for former cluster head ID, is transferred to
Step 528 carries out the update of sub-clustering state；
Step 516, if this node meets sub-clustering and merges condition, this node triggers sub-clustering and merges process, and sub-clustering merges process will
The fringe node of two sub-clusterings of no communication link is promoted to leader cluster node, constructs communication link for the two sub-clusterings, realizes and divide
Data relay transmission between cluster is transferred to the merging phase that step 517 judges adjacent cluster；Otherwise, this node is transferred to step 528 and is divided
Tufted state updates；
Step 517, if this node has adjacent cluster and is in merging phase, this node is transferred to step 528 and carries out the update of sub-clustering state；
Otherwise, this node is transferred to step 518 and executes sub-clustering merging；
Step 518, the sub-clustering promotion of role of this node is leader cluster node by self-decision functional module, is completed sub-clustering and is merged, is transferred to
Step 529 carries out the update of sub-clustering state；
Step 519, if this node meets cluster head switching condition, this node triggers cluster head switching flow, and cluster head switching flow refers to
The other neighbours' leader cluster nodes of cluster member addition for leading this cluster are cluster structured to optimize, and are transferred to step 520 and trigger this cluster switching cluster head；
Otherwise, this node be transferred to step 521 judge sub-clustering fission condition；
Step 520, self-decision functional module triggers this cluster switching cluster head, and plan notifies the cluster member in this cluster to carry out cluster head and cut
It changes, is set as the destination node ID of the Clustering control information of this node to broadcast ID in cluster, be transferred to step 531 and carry out sub-clustering state
It updates；
Step 521, if this node meets sub-clustering fission condition, this node triggers sub-clustering fission process, and sub-clustering fission process refers to
The cluster member for leading this cluster constructs new sub-clustering and carrys out equalising network sub-clustering scale, is transferred to step 522 and selects new cluster head；Otherwise, this node
It is transferred to step 524 and judges that sub-clustering merges condition；
Step 522, the node that this node selects neighbor node number most from the cluster member of this cluster is transferred to step as new cluster head
523 triggering sub-clustering fissions；
Step 523, self-decision functional module triggers the fission of this cluster, and plan notifies the cluster member of new cluster head and this cluster to carry out sub-clustering and split
Become, set new cluster head ID for the destination node ID of the Clustering control information of this node, is transferred to step 532 and carries out sub-clustering state more
Newly；
Step 524, if this node meets sub-clustering and merges condition, this node is transferred to step 525 and executes sub-clustering merging；Otherwise, originally
Node is transferred to step 529 and carries out the update of sub-clustering state；
Step 525, self-decision functional module triggering sub-clustering merges, and the destination node ID of the Clustering control information of this node is arranged
For the ID of the minimum ID of the connection cluster head set of the minimum ID and this node of connection cluster head set inconsistent neighbor node, it is transferred to
The connection cluster head set of this sub-clustering of step 526 update；
Step 526, this node connection cluster head set is updated to the connection cluster head set and mesh of this node by self-decision functional module
Node ID connection cluster head union of sets collection, this node be transferred to step 533 carry out the update of sub-clustering state；
Step 527, it is to apply into cluster that the sub-clustering state of this node, which is arranged, in self-decision functional module, and destination node is specified cluster head
This node Clustering control information is transferred to wireless transmission unit by ID；
Step 528, it is cluster member that the sub-clustering state of this node, which is arranged, in self-decision functional module, and destination node is the cluster head of this cluster
This node Clustering control information is transferred to wireless transmission unit by ID；
Step 529, it is cluster head that the sub-clustering state of this node, which is arranged, in self-decision functional module, and destination node is that the whole network broadcasts ID, will
This node Clustering control information is transferred to wireless transmission unit；
Step 530, the sub-clustering state of this node is arranged as cluster head replacement in self-decision functional module, and destination node is the cluster being replaced
Head ID, is transferred to wireless transmission unit for this node Clustering control information；
Step 531, the sub-clustering state of this node is arranged as cluster head switching in self-decision functional module, and destination node is broadcast in cluster
This node Clustering control information is transferred to wireless transmission unit by ID；
Step 532, the sub-clustering state of this node is arranged as sub-clustering fission in self-decision functional module, and destination node is new cluster head ID,
This node Clustering control information is transferred to wireless transmission unit；
Step 533, the sub-clustering state of this node is arranged as sub-clustering merging in self-decision functional module, and destination node is specified adjacent cluster
Cluster member id, this node Clustering control information is transferred to wireless transmission unit.
Refering to Fig. 5.In ad hoc networks, each node possesses a unique node ID, the ID number point of 32 nodes
Not Wei 1,2 ..., 32.Each network node constitutes communication link with the neighbor node in communication coverage.Wherein, node
Contain 8 hop neighbor nodes in 12 communication coverage, constitutes 8 communication links.
The above description is only an embodiment of the present invention, is not intended to limit the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of distributed self-adaption cluster-dividing method suitable for self-organizing network has following technical characteristic: in self-organization network
In network, each network node construction basis self-organizing network protocol periodically carries out the ring of control information exchange with neighbor node
Border perception, self study and self-decision three zones module, execute cluster head selection process, cluster head replacement process, cluster head switching flow,
Sub-clustering fission process and sub-clustering merge process；Each network node within the control period of this node using wireless transport module with
The ability of neighbor node interactive control information receives the Clustering control information of neighbor node by radio receiving unit, and by nothing
The Clustering control information reporting for the neighbor node that line receiving unit is got is to environment sensing functional module；Environment sensing function mould
Block counts the Clustering control information of neighbor node within each control period, and by the neighbor list within the scope of this node double bounce
Information, sub-clustering status information, connection cluster head aggregate information and cluster head value information are reported to self-learning function module；Self study function
The Clustering control information for the neighbor node that energy module is obtained using environment sensing functional module, by the sub-clustering control of all neighbor nodes
Information abstraction processed at localized network sub-clustering state change information, according to predefined sub-clustering state jump condition and two cluster heads
The sub-clustering state change information of localized network is refined in the definition of set, by cumbersome node clustering information compression at clearly net
Network sub-clustering information is transferred to self-decision functional module；Point for the localized network that self-decision functional module is refined using self-learning function
The cluster state change information sub-clustering role current according to this node and corresponding sub-clustering state jump condition are adaptively adjusted
The sub-clustering state of this node, circulation execute cluster head selection process, cluster head replacement process, cluster head switching flow, sub-clustering fission process
Merge process with sub-clustering, network node is enabled adaptively to handle the dynamic change of network topology according to neighbor list information
With network cluster dividing state change, optimize cluster head selection in real time.
2. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: in cluster
In head selection process, the higher cluster head of cluster head weight or promotion can be added in cluster node to be entered according to candidate cluster head Resource selection
This node is leader cluster node；In cluster head replacement process, when network node finds this according to neighbor list information within the scope of double bounce
The set of the neighbor node of node and this node composition is the true superset of the set of some neighbours' cluster head and its neighbor node composition
When, it can be adaptively leader cluster node by the sub-clustering promotion of role of this node；In cluster head switching flow, when leader cluster node according to
Find it is connection and all neighbours' cluster heads between all neighbours' cluster heads of this node according to neighbor list information within the scope of double bounce
And the union of their neighbor node is when being the superset of the set of the neighbor node composition of this node and this node, it can be adaptive
Bunch member node is set by the sub-clustering role of this node and the cluster member of this cluster is notified to carry out cluster head switching with answering.
3. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: dividing
Cluster is fissioned in process, when leader cluster node has received the new number for entering cluster application and current cluster member plus newly entering cluster member's
When number reaches preset maximum cluster member's capacity limit, which selects neighbor node number most from the cluster member of this cluster
More nodes notifies the cluster member of new cluster head and this cluster to carry out sub-clustering fission operation as new cluster head, by Clustering control information；
Merge in process in sub-clustering, when the minimum node ID in the connection cluster head set of some neighbor node is not equal to the connection of this node
When minimum node ID in cluster head set, sub-clustering role and sub-clustering state are respectively set to leader cluster node to this node and sub-clustering is closed
And state, and by Clustering control information indicate the neighbor node by sub-clustering promotion of role be leader cluster node；Self-decision function mould
Block constructs the Clustering control information of this node and inputs the wireless transmission unit progress broadcast transmission of wireless transport module.
4. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: sub-clustering
Cluster head weight, sub-clustering state and destination node ID that information includes neighbor node, connection cluster head set and neighbor list are controlled,
In, cluster head weight indicates that the neighbor node is cut out for the degree of leader cluster node, and the higher node of cluster head weight is more suitable certainly
Leader cluster node is served as in tissue network；Sub-clustering state includes to apply into cluster, cluster member, cluster head, cluster head replacement, cluster head switching, divide
Cluster fission and sub-clustering merge kind of a state, and sub-clustering state and destination node ID show the sub-clustering role and the neighbours of the neighbor node
The clustering operation and it is cooperated to complete the destination node of clustering operation that node is carrying out；Connection cluster head set contains neighbours
All leader cluster nodes that node can be connected to, for judging cluster structured connectivity in ad hoc networks；Neighbor list
All neighbor nodes comprising neighbor node show the local topology of neighbor node in ad hoc networks.
5. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: environment
The Clustering control information for all neighbor nodes that perceptional function module will acquire is according to neighbor list, sub-clustering state, connection cluster
Four kinds of classifications of head set and cluster head weight carry out classification storage, wherein neighbor list information, which is shown, is conducive to the progress of this section point
Cluster head optimum choice and judge this node and specified cluster head connected relation this node double bounce within the scope of physical topology knot
Structure；Sub-clustering statistic is conducive to all neighbor nodes of this node of the sub-clustering state change of this section point analysis localized network
Sub-clustering role and the clustering operation that is carrying out；Connection cluster head set, which summarizes, is conducive to this section point analysis localized network
The union for the cluster head that all neighbor nodes of this node of cluster structured connectivity can be connected to.
6. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: cluster head
Weight is ranked up all neighbor nodes of this node according to the degree for being cut out for cluster head, in favor of cluster head optimum choice；
Environment sensing functional module count neighbor node Clustering control information and by within the scope of this node double bounce neighbor list information,
Sub-clustering status information, connection cluster head aggregate information and cluster head value information are reported to self-learning function module.
7. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: learning by oneself
It practises functional module and enters cluster condition, cluster head switching condition, sub-clustering fission condition, neighbour according to predefined cluster head replacement condition, successfully
Occupy whether merging phase, this cluster fission, whether cluster head switches, sub-clustering merges condition, are connected to cluster head set and candidate cluster head set
The sub-clustering state change of totally eight kinds of state jump conditions and the localized network within the scope of two cluster head set analysis this node double bounces
Information.
8. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: learning by oneself
It practises functional module and the analysis result of totally eight kinds of state jump conditions and two cluster head set is transferred to self-decision functional module, according to
Corresponding sub-clustering state jump condition is extracted according to the current sub-clustering role of this node, and optimal sub-clustering state, structure is adaptive selected
It builds the Clustering control information of this node and the wireless transmission unit for inputting wireless transport module carries out broadcast transmission, to reach point
Clustering architecture can be adaptive to the purpose of network cluster dividing state change.
9. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: certainly
It organizes in network, by distributed self-adaption cluster-dividing method, subnetwork node will adaptively become leader cluster node, and other
The sub-clustering closed on is adaptively added in network node；Cluster member-cluster head link is the one hop link in cluster, safeguards the data in cluster
The data transmission between cluster is safeguarded in transmission, and multi-hop link of the link between cluster between cluster head.
10. as described in claim 1 suitable for the distributed self-adaption cluster-dividing method of self-organizing network it is characterized by: each
Network node periodically carries out control information exchange according to self-organizing network protocol and neighbor node, adaptively becomes cluster head
Node or bunch member node, by realizing the sub-clustering of self-organizing network in leader cluster node maintenance and management cluster and cluster-level routing information
Structure.
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