CN107529196A - A kind of method and system of the data transmission of internet of things based on dummy node - Google Patents
A kind of method and system of the data transmission of internet of things based on dummy node Download PDFInfo
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- CN107529196A CN107529196A CN201710737715.9A CN201710737715A CN107529196A CN 107529196 A CN107529196 A CN 107529196A CN 201710737715 A CN201710737715 A CN 201710737715A CN 107529196 A CN107529196 A CN 107529196A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/082—Load balancing or load distribution among bearers or channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/04—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources
- H04W40/10—Communication route or path selection, e.g. power-based or shortest path routing based on wireless node resources based on available power or energy
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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
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Abstract
The present invention relates to a kind of internet of things data transmission method and system based on dummy node, method includes:All reachable via nodes of source node are obtained, and the reachable via node for possessing public father's node is formed into a dummy node；The source node selects one of them to add Internet of Things up to forward node of the via node as source node from dummy node according to node load ability, when the forward node of the source node breaks down, the source node chooses at least one reachable via node from dummy node and accesses Internet of Things as forward node.Ensure on the premise of extra forward node is not increased, improve self-healing ability when network data transmission breaks down, and data jamming will not be caused, and malfunctioning node data are forwarded by the way of load is shared, effectively extend the life cycle of wireless network.The present invention also provides a kind of system of the data transmission of internet of things based on dummy node.
Description
Technical field
The present invention relates to Internet of Things transmission technique field, more particularly to a kind of data transmission of internet of things based on dummy node
Method and system.
Background technology
In the intensive internet of things of node, because the problems such as sensor node failure, mobility, energy expenditure, can cause to pass
Transmission link disconnection, influences the topological structure of wireless network, and causes the Transmission time of some nodes longer.
In order to extend the life cycle of whole wireless network, nothing will not be caused because of some node failure or depleted of energy
Line network lifecycle terminates, in the prior art would generally be when some forward node breaks down in malfunctioning node region
One neighbor node of interior selection forwards the data of the malfunctioning node, but such the problem of bringing is, in order to ensure original transmission
Link it is unobstructed, the disposal ability of all nodes in wireless network is very powerful, could one or more nodes occur therefore
Barrier or during depleted of energy, forwarding malfunctioning node data without causing data congestion, this will necessarily just cause wireless network into
This increase, and when an error occurs, wireless network there may be the number that some node additionally forwards multiple malfunctioning nodes
According to due to the increase of load, the node energy can be consumed drastically, and this life cycle for allowing for wireless network can not obtain effectively
Extend.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of method of the data transmission of internet of things based on dummy node
And system.
On the one hand, embodiments of the invention provide a kind of method of the data transmission of internet of things based on dummy node, described
Method includes:
Obtain all reachable via nodes of source node, and the reachable via node composition one that public father's node will be possessed
Individual dummy node；
The source node selects one of them up to via node as institute from dummy node according to node load ability
The forward node for stating source node adds Internet of Things；
When the forward node of the source node breaks down, the source node chosen from dummy node it is at least one can
Forward node up to via node as the source node accesses Internet of Things.
It is all reachable in the dummy node according to residing for malfunctioning node when failure node by above-mentioned scheme
The data volume of the load capacity of via node and the child node of malfunctioning node, at least one forward node is selected, forward failure
The data of node, if the load capacity that multiple reachable via nodes be present is more than the data volume of malfunctioning node, choose load energy
The maximum data up to via node forwarding malfunctioning node of power, if the load capacity of any reachable via node is respectively less than
The data volume of malfunctioning node, then the data volume that multiple reachable via nodes forward malfunctioning node jointly is chosen, ensures do not increasing
On the premise of extra forward node, self-healing ability when network data transmission breaks down is improved, and data jamming will not be caused,
And malfunctioning node data are forwarded by the way of load is shared, effectively extend the life cycle of wireless network.
Further, when the forward node of the source node breaks down, the source node is from dummy node according to section
Point load capacity and residue energy of node choose forward node admixture of at least one reachable via node as source node
Networking.
Beneficial effect using above-mentioned further improvement project is in wireless sensor network, to weigh a sensor
Network morals are typically to be determined according to the dump energy of node.One sensor network is started working straight from networking
To the energy zero for node wherein occur, this period is exactly the life cycle of the sensor network.Therefore in selection forwarding section
During point, consider residue energy of node, be very necessary to extend the life cycle of sensor network, with reference to residue energy of node
With node load ability, in the transmitting procedure for ensureing Non-blocking Data, the life of network where effectively extending source node
Cycle.
Above-mentioned further on the basis of scheme, to the node load ability of each reachable via node in dummy node with
Residue energy of node is scored and summed, and the reachable via node for selecting and being worth maximum adds as the forward node of source node
Internet of Things.
Beneficial effect using above-mentioned further improvement project is, when choosing the forward node of source node, according only to section
The size sequence of point load capacity, in fact it could happen that the too low situation of node energy, and in the case where node energy is too low
Increase the data payload of node, the energy for inevitably resulting in node drastically consumes, causes the end of life of individual node, enter
And shorten the life cycle of whole wireless network, and how many pairs of node load ability and residue energy of node are combined up in
It is ranked up after node, can more reasonably finds out optimal data forwarding paths, each node is born in balanced wireless network
Carry, extend Network morals where source node.
Embodiments of the invention also provide a kind of system of the data transmission of internet of things based on dummy node, the system bag
Include：
Dummy node determining module, for obtaining all reachable via nodes of source node and preserving, and it will possess public
The reachable via node of father's node forms a dummy node；
Forward node determining module, for selecting one of node conduct according to node load ability from dummy node
The forward node of the source node adds Internet of Things,
Forward node weight determining module, for when the forward node of the source node breaks down, from dummy node
The forward node that at least one reachable via node is chosen as the source node accesses Internet of Things.
It is all reachable in the dummy node according to residing for malfunctioning node when failure node by above-mentioned scheme
The data volume of the load capacity of via node and the child node of malfunctioning node, at least one forward node is selected, forward failure
The data of node, if the load capacity that multiple reachable via nodes be present is more than the data volume of malfunctioning node, choose load energy
The maximum data up to via node forwarding malfunctioning node of power, if the load capacity of any reachable via node is respectively less than
The data volume of malfunctioning node, then the data volume that multiple reachable via nodes forward malfunctioning node jointly is chosen, ensures do not increasing
On the premise of extra forward node, self-healing ability when network data transmission breaks down is improved, and data jamming will not be caused,
And malfunctioning node data are forwarded by the way of load is shared, effectively extend the life cycle of wireless network.
Further, forward node weight determining module, for when the forward node of the source node breaks down, root
At least one reachable via node is chosen from dummy node according to node load ability and residue energy of node to save as the source
The forward node access Internet of Things of point.
Beneficial effect using above-mentioned further improvement project is in wireless sensor network, to weigh a sensor
Network morals are typically to be determined according to the dump energy of node.One sensor network is started working straight from networking
To the energy zero for node wherein occur, this period is exactly the life cycle of the sensor network.Therefore in selection forwarding section
During point, residue energy of node is considered, be very necessary to extend the life cycle of sensor network, due to combining node residue
Energy and node load ability, in the transmitting procedure for ensureing Non-blocking Data, network where effectively extending source node
Life cycle.
On the basis of above-mentioned further scheme, the forward node weight determining module, it is additionally operable to in dummy node
The node load ability and residue energy of node of each reachable via node are scored and summed, select and be worth maximum up in
After node Internet of Things is added as the forward node of the source node.
Beneficial effect using above-mentioned further improvement project is, when choosing the forward node of source node, according only to section
The size sequence of point load capacity, in fact it could happen that the too low situation of node energy, and in the case where node energy is too low
Increase the data payload of node, the energy for inevitably resulting in node drastically consumes, causes the end of life of individual node, enter
And shorten the life cycle of whole wireless network, and how many pairs of node load ability and residue energy of node are combined up in
It is ranked up after node, can more reasonably finds out optimal data forwarding paths, each node is born in balanced wireless network
Carry, extend Network morals where source node.
Brief description of the drawings
Fig. 1 is a kind of method flow for data transmission of internet of things based on dummy node that first embodiment of the invention provides
Figure；
Fig. 2 is a kind of method flow for data transmission of internet of things based on dummy node that second embodiment of the invention provides
Figure；
Fig. 3 is a kind of method flow for data transmission of internet of things based on dummy node that third embodiment of the invention provides
Figure；
Fig. 4 is a kind of method flow for data transmission of internet of things based on dummy node that fourth embodiment of the invention provides
Figure；
Fig. 5 is the method flow diagram provided in an embodiment of the present invention selected in dummy node up to via node；
Fig. 6 is that a kind of system architecture of data transmission of internet of things based on dummy node provided in an embodiment of the present invention is illustrated
Figure；
Fig. 7 is dummy node determining module structural representation in system provided in an embodiment of the present invention；
Fig. 8 is forward node determining module structural representation in system provided in an embodiment of the present invention；
Fig. 9 is forward node weight determining module structural representation in system provided in an embodiment of the present invention.
Embodiment
In describing below, in order to illustrate rather than in order to limit, it is proposed that such as particular system structure, interface, technology it
The detail of class, understand the present invention to cut thoroughly.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, omit to well-known system, circuit and
The detailed description of method, in case unnecessary details hinders description of the invention.
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
With reference to following description and accompanying drawing, it will be clear that these and other aspects of embodiments of the invention.In these descriptions
In accompanying drawing, some particular implementations in embodiments of the invention are specifically disclosed, to represent to implement the implementation of the present invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, the present invention
Embodiment includes all changes, modification and the equivalent fallen into the range of the spirit and intension of attached claims.
The data transmission of internet of things based on dummy node realized according to embodiments of the present invention below in conjunction with accompanying drawing description
Method and system.
Fig. 1 is a kind of method flow diagram of the data transmission of internet of things based on dummy node provided in an embodiment of the present invention.
Specifically as shown in figure 1, this method includes:
S100, obtain all reachable via nodes of source node, and the reachable via node that public father's node will be possessed
Form a dummy node；
Internet of Things framework includes terminal device, forward node and convergence unit three-layer structure, and forward node provides tradition mutually
The data transfer and gateway function of networking, convergence unit provides data analysis, control and Internet of Things man-machine interface, positioned at Internet of Things
The magnanimity terminal equipment of network edge, internet is accessed by forward node, is connected with aggregation node.Terminal device and edge turn
It is Non-blocking Data transmission, the guarantee of internet of things continuous service that how hair node, which chooses access Internet of Things path,.
Terminal device or edge forwarding node to need to access Internet of Things are used as source node, obtain source node that have can more
Up to via node, source node up to via node with can directly enter row data communication.The reachable relaying of public father node will be possessed
Node forms a dummy node.Change inside dummy node is sightless for the grandparent node of source node.Ancestral
Father node is without any storage or energy expense, and when being changed inside dummy node, source node data still can be with obstacle
Access Internet of Things, and be forwarded to purpose convergence unit.
S200, the source node select one of them to make up to via node from dummy node according to node load ability
Internet of Things is added for the forward node of the source node；
Data gulp down the quantity that output refers to be successfully delivered data in the unit interval, if the number to be sent within the unit interval
It is node load ability according to the maximum data throughput more than node, will result in data transfer congestion, on the one hand can causes to pass
Defeated delay, on the other hand it is possible to that loss of data can be caused.One in node load ability selection dummy node is reachable
Via node adds Internet of Things as the forward node of source node, can avoid the congestion of data transfer to greatest extent.
S300, when the forward node of the source node breaks down, the source node is chosen at least from dummy node
One is accessed Internet of Things up to forward node of the via node as the source node.
It is all reachable in the dummy node according to residing for malfunctioning node when failure node by above-mentioned scheme
The data volume of the load capacity of via node and the child node of malfunctioning node, at least one forward node is selected, forward failure
The data of node, if the load capacity that multiple reachable via nodes be present is more than the data volume of malfunctioning node, choose load energy
The maximum data up to via node forwarding malfunctioning node of power, if the load capacity of any reachable via node is respectively less than
The data volume of malfunctioning node, then the data volume that multiple reachable via nodes forward malfunctioning node jointly is chosen, ensures do not increasing
On the premise of extra forward node, self-healing ability when network data transmission breaks down is improved, and data jamming will not be caused,
And malfunctioning node data are forwarded by the way of load is shared, effectively extend the life cycle of wireless network.
Fig. 2 is a kind of method flow for data transmission of internet of things based on dummy node that second embodiment of the invention provides
Figure.On the basis of above-described embodiment, specifically as shown in Fig. 2 this method includes：
S110, the reachable message of source node broadcast.
Specifically, because source node is before internet of things is accessed, in this case it is not apparent that there is which forward node to access thing
Networking, nor know that the burden of minimum can be caused to former internet of things by which forward node accessing Internet of Things by, because
This described source node broadcasts reachable message to internet of things, and any node for receiving reachable message is regarded as source node
One jump up to node, source node is jumped by one can access Internet of Things up to node with shortest path fewest number of hops.
S120, receive the response feedback information of all response nodes for receiving reachable message.
Specifically, the node of all reachable messages for receiving source node broadcast, it is considered to be the source node is possible to
Through thus accessing the forward node of Internet of Things, then the node sends response feedback information, the response feedback to the source node
Information should at least include response node father's node ID, can communication node ID, actual forwarding load and maximum can forward it is negative
Carry；After source node receives the response feedback information of response node, being apparent from all jumps by response feedback information can
Judge that selection which or which response node accesses Internet of Things up to the essential information of node, and according to response feedback information.
S130, a jump is stored in up in table using all response nodes as up to via node, and will it is all it is reachable in
A dummy node is formed after the node for possessing identical father's node ID in node.
Specifically, because when source node accesses Internet of Things by forward node, forward node may be due to failure, movement
Property, energy expenditure the problems such as cause transmission link disconnection, using all response nodes as up to via node be stored in a jump can
Up in table, source node can forward node break down, move out link range or depleted of energy the problems such as when, directly
Search one to jump up to table, you can acquisition can be as the reachable via node of forward node.Can described in being saved in the reachable table of one jump
Up to the essential information of via node, including at least father's node ID up to via node, can communication node ID, actual forwarding it is negative
Load and maximum can forward load, and source node is jumped up to table by searching one, is obtained father's node ID identical and is saved up to relaying
Point, and form a dummy node.
Father's node ID is identical, and the reachable via node for illustrating to form dummy node is located at same subtree, works as dummy node
When the reachable via node of the middle forward node as source node breaks down, source node changes forward node, will not change son
Tree construction, it is ensured that the data of source node are forwarded to target sink unit along legacy data transmission path.
S200, the source node select one of them to make up to via node from dummy node according to node load ability
Internet of Things is added for the forward node of the source node.
S300, when the forward node of the source node breaks down, the source node is chosen at least from dummy node
One is accessed Internet of Things up to forward node of the via node as the source node.
By above-mentioned scheme, each node in dummy node possesses identical father's node, can timely monitoring node
Failure, and the change inside dummy node is sightless for father's node.
Preferably, the response feedback information also includes residue energy of node.Including in the response feedback information should
Answer node father's node ID, can communication node ID, actual forwarding load, maximum can forward load and residue energy of node.
The source node selects one of them reachable according to node load ability and residue energy of node from dummy node
Via node adds Internet of Things as the forward node of source node.
In wireless sensor network, the life cycle for weighing a sensor network is typically the residual energy according to node
Measure to determine.One sensor network is started working until wherein there is the energy of node zero from networking, and this period is just
It is the life cycle of the sensor network.Therefore when selecting forward node, residue energy of node is considered, to extend sensor network
The life cycle of network is very necessary.
Fig. 3 is a kind of method flow for data transmission of internet of things based on dummy node that third embodiment of the invention provides
Figure.On the basis of above-described embodiment, specifically as shown in figure 3, this method includes：
S110, the reachable message of source node broadcast.
S120, receive the response feedback information of all response nodes for receiving reachable message.
S130, a jump is stored in up in table using all response nodes as up to via node, and will it is all it is reachable in
A dummy node is formed after the node for possessing identical father's node ID in node.
S210, according to the size of node load ability, all reachable via nodes in dummy node are ranked up, it is raw
Into the optimal selection path queue of source node access Internet of Things.
Specifically, the node load ability can forward the difference of load and actual forwarding load for maximum.Node load
Ability is to weigh a reachable via node on the premise of original data forwarding is completed, and can forward the ability of data, root
According to the size of node load ability, all reachable via nodes in dummy node are ranked up, source node can be obtained and connect
Enter Path selection optimal during Internet of Things.
S220, choose the maximum reachable via node of optimal selection path queue interior joint load capacity and saved as the source
The forward node of point adds Internet of Things.
S300, when the forward node of the source node breaks down, the source node is chosen at least from dummy node
One is accessed Internet of Things up to forward node of the via node as the source node.
When the forward node of source node breaks down, source node needs to inquire about all reachable via nodes in dummy node
Load capacity, and find out meet forwarding require optimal reachable via node, and when this up to via node generation due to
When failure or depleted of energy, source node needs to travel through all reachable via nodes in dummy node again, inquiry so repeatedly,
The serious waste energy of source node in itself, once and source node depleted of energy, then mean that the data of source node will be unable to lead to
Internet of Things is crossed to send to target sink unit.Therefore by above-mentioned scheme, optimal selection path queue is generated, when source node
During forward node failure, source node can find optimal transmission path with the most short time, without inquiring about repeatedly up to relaying
The load capacity of node, save due to inquiring about the node energy brought loss repeatedly.
Preferably, step S210 also includes：
The node load ability and residue energy of node of each reachable via node in dummy node are scored and asked
With selection and forward node addition Internet of Things of the reachable via node as source node for being worth maximum.
Respectively according to the size of node load ability and the size of residue energy of node to each reachable in dummy node
Via node is descending to be ranked up two queues of generation；
Scoring is set to the reachable via node in two queues；
Two queues scoring summation to same reachable via node, obtains each reachable via node overall score, and foundation
Scoring is ranked up to obtain optimal selection path queue to the reachable via node in dummy node.
When carrying out forwarder selection, with reference to residue energy of node and node load ability, ensureing Non-blocking Data
Transmitting procedure in, effectively extend Network morals where source node.
Specifically, due to the size of node load ability and the size of dump energy, not it is evenly distributed, in order to
The optimal solution of Path selection is found faster, after two queues generates, the amount of can accept data to two queues and is remained respectively
Complementary energy is normalized, and value corresponding to the node load ability and dump energy that are obtained after normalized is made
For the scoring in two queues up to via node, then two queues scoring summation to same reachable via node again, is obtained
Generation is ranked up most preferably to the reachable via node in dummy node to each reachable via node overall score, and according to scoring
Select path queue.
When choose source node forward node when, according only to node load ability size sort, in fact it could happen that node
The too low situation of energy, and in the case where node energy is too low increase node data payload, inevitably result in node
Energy drastically consumes, and causes the end of life of individual node, and then shortens the life cycle of whole wireless network, and combines
The size of node load ability and how many pairs of dump energy reachable via nodes are ranked up, and can more reasonably be searched
Go out optimal data forwarding paths, each node load in balanced wireless network, extend Network morals where source node.
Fig. 4 is a kind of method flow for data transmission of internet of things based on dummy node that fourth embodiment of the invention provides
Figure.On the basis of above-described embodiment, specifically as shown in figure 3, this method includes：
S110, the reachable message of source node broadcast.
S120, receive the response feedback information of all response nodes for receiving reachable message.
S130, a jump is stored in up in table using all response nodes as up to via node, and will it is all it is reachable in
A dummy node is formed after the node for possessing public father's node in node.
S210, according to the size of node load ability, all reachable via nodes in dummy node are ranked up, it is raw
Into the optimal selection path queue of source node access Internet of Things.
S220, the maximum reachable via node of optimal selection path queue interior joint load capacity is chosen as source node
Forward node adds Internet of Things.
S310, when the forward node of the source node breaks down, turn into dummy node except the source node
Other sent out outside node send inquiry message up to via node.
Specifically, when forward node breaks down, source node needs to reselect forward node access Internet of Things, and appoints
On the one hand meaning selection forward node can cause the change of legacy network structure, cause more energy losses or hop count increase also
Either data transfer delay, and due to when source node accesses Internet of Things first, distance is stored with being jumped one up to table
The nearest reachable via node of source node, therefore forward node access Internet of Things is selected in being jumped again one up to table, it is most
Efficiency, and possess public father's node, therefore the weight in dummy node due to forming the reachable via node of dummy node
The forward node of new selection source node, the influence to legacy network structure are minimum.Source node removes the source into dummy node
Other outside the forward node of node send inquiry message up to via node, for confirming to be currently able to provide number for source node
Which reachable via node according to forwarding service has.
S320, other in addition to the forward node of the source node in dummy node are received up to via node according to institute
State inquiry message feedback can information on services.
Specifically, other in addition to the forward node of the source node in dummy node are receiving up to via node
Source node send inquiry message after, then to source node feedback can information on services, can information on services include node load ability.
S330, according to reception can information on services, malfunctioning node information is deleted from the optimal selection path queue,
From sending at least one reachable via node can be chosen as forward node addition Internet of Things in the reachable via node of information on services.
Specifically, source node is in other reachable relayings in receiving dummy node in addition to the forward node of the source node
Node feeding back can delete malfunctioning node information first after information on services, then in optimal selection path queue up in
It is updated after node according to the size for the node load ability that can be included in information on services, generates new optimal selection path team
Row, then choose at least one reachable via node from optimal selection path queue again and add Internet of Things for forward node.
Preferably, step S320 feedback can information on services also include each reachable via node current residual node energy
Amount；In the step S330, source node is receiving and failure section can be being deleted from former optimal selection path queue after information on services
Point information, then to the reachable via node in optimal selection path queue according to the node load energy that can be included in information on services
The size and current residual node energy of power are updated, and new optimal selection path queue are generated, then again from most preferably
Select and at least one reachable via node is chosen in path queue as forward node addition Internet of Things.
By such scheme, when the forward node of source node breaks down, source is deleted from optimal selection path queue
The forward node information of node, the invalid data in optimal selection path queue is reduced, when choosing forward node again more
Efficiently, at the same according to can information on services update optimal selection path queue so that when the selection of the forward node of source node has
Effect property, the situation for avoiding optimal selection path queue from not being inconsistent with actual node situation.
Preferably, on the basis of such scheme, in step S330, it is described from send can information on services reachable relaying section
At least one reachable via node is chosen in point and adds Internet of Things for forward node, as shown in figure 5, including：
S331, the source node calculate needed for max-forwards load TPS, and with the 1st in optimal selection path queue
Up to via node node load ability Δ tps1Make comparisons；
S332, if TPS≤Δ tps1, then the source node choose described 1st and saved up to via node as the source
The forward node of point adds Internet of Things；
S333, if TPS ＞ Δs tps1, then calculate the preceding i nodes up to via node in optimal selection path queue and bear
Loading capability sum Δ tpssum, until TPS≤Δ tpssum；
S334, the source node are forwarded load according to preceding i in optimal selection path queue up to via node section
Point load capacity is divided into i part, and chooses the i and added up to forward node of the via node as the source node
Internet of Things.
By such scheme, asking for source node data can not disposably be forwarded up to via node by effectively solving one
Topic.
On the other hand, the present invention provides a kind of system of the data transmission of internet of things based on dummy node, as shown in fig. 6,
Including：
Dummy node determining module, for obtaining all reachable via nodes of source node, and public Father's Day will be possessed
The reachable via node of point forms a dummy node.
Internet of Things framework includes terminal device, forward node and convergence unit three-layer structure, and forward node provides tradition mutually
The data transfer and gateway function of networking, convergence unit provides data analysis, control and Internet of Things man-machine interface, positioned at Internet of Things
The magnanimity terminal equipment of network edge, internet is accessed by forward node, is connected with aggregation node.Terminal device and edge turn
It is Non-blocking Data transmission, the guarantee of internet of things continuous service that how hair node, which chooses access Internet of Things path,.
Terminal device or edge forwarding node to need to access Internet of Things are used as source node, obtain source node that have can more
Up to via node, source node up to via node with can directly enter row data communication.The reachable relaying of public father node will be possessed
Node forms a dummy node.Change inside dummy node is sightless for the grandparent node of source node.Ancestral
Father node is without any storage or energy expense, and when being changed inside dummy node, source node data still can be with obstacle
Access Internet of Things, and be forwarded to purpose convergence unit.
Forward node determining module, for selecting one of them up to relaying according to node load ability from dummy node
Node adds Internet of Things as the forward node of the source node.
Data gulp down the quantity that output refers to be successfully delivered data in the unit interval, if the number to be sent within the unit interval
It is node load ability according to the maximum data throughput more than node, will result in data transfer congestion, on the one hand can causes to pass
Defeated delay, on the other hand it is possible to that loss of data can be caused.One in node load ability selection dummy node is reachable
Via node adds Internet of Things as the forward node of source node, can avoid the congestion of data transfer to greatest extent.
Forward node weight determining module, for when the forward node of the source node breaks down, from dummy node
The forward node that at least one reachable via node is chosen as the source node accesses Internet of Things.
It is all reachable in the dummy node according to residing for malfunctioning node when failure node by above-mentioned scheme
The data volume of the load capacity of via node and the child node of malfunctioning node, at least one forward node is selected, forward failure
The data of node, if the load capacity that multiple reachable via nodes be present is more than the data volume of malfunctioning node, choose load energy
The maximum data up to via node forwarding malfunctioning node of power, if the load capacity of any reachable via node is respectively less than
The data volume of malfunctioning node, then the data volume that multiple reachable via nodes forward malfunctioning node jointly is chosen, ensures do not increasing
On the premise of extra forward node, self-healing ability when network data transmission breaks down is improved, and data jamming will not be caused,
And malfunctioning node data are forwarded by the way of load is shared, effectively extend the life cycle of wireless network.
On the basis of above-described embodiment, the dummy node determining module, as shown in fig. 7, comprises：
Message sending module, for broadcasting reachable message.
Specifically, because source node is before internet of things is accessed, in this case it is not apparent that there is which forward node to access thing
Networking, nor know that the burden of minimum can be caused to former internet of things by which forward node accessing Internet of Things by, because
This described source node broadcasts reachable message to internet of things, and any node for receiving reachable message is regarded as source node
One jump up to node, source node is jumped by one can access Internet of Things up to node with shortest path fewest number of hops.
Feedback reception module, for receiving the response feedback information of all response nodes for receiving reachable message.
Specifically, the node of all reachable messages for receiving source node broadcast, it is considered to be the source node is possible to
Through thus accessing the forward node of Internet of Things, then the node sends response feedback information, the response feedback to the source node
Information should at least include response node father's node ID, can communication node ID, actual forwarding load and maximum can forward it is negative
Carry；After source node receives the response feedback information of response node, being apparent from all jumps by response feedback information can
Judge that selection which or which response node accesses Internet of Things up to the essential information of node, and according to response feedback information.
Node confirms module, and a jump is stored in up in table using all response nodes as reachable via node, and by institute
A dummy node is formed by up to the node for possessing identical father's node ID in via node.
Specifically, because when source node accesses Internet of Things by forward node, forward node may be due to failure, movement
Property, energy expenditure the problems such as cause transmission link disconnection, using all response nodes as up to via node be stored in a jump can
Up in table, source node can forward node break down, move out link range or depleted of energy the problems such as when, directly
Search one to jump up to table, you can acquisition can be as the reachable via node of forward node.Can described in being saved in the reachable table of one jump
Up to the essential information of via node, including at least father's node ID up to via node, can communication node ID, actual forwarding it is negative
Load and maximum can forward load, and source node is jumped up to table by searching one, and it is identical and be in communication with each other to obtain father's node ID
Reachable via node, and form a dummy node.
Father's node ID is identical, and the reachable via node for illustrating to form dummy node is located at same subtree, works as dummy node
When the reachable via node of the middle forward node as source node breaks down, source node changes forward node, will not change son
Tree construction, it is ensured that the data of source node are forwarded to target sink unit along legacy data transmission path.
By above-mentioned scheme, each node in dummy node possesses identical father's node, can timely detection node
Failure, and the change inside dummy node is sightless for father's node.
Preferably, the response feedback information also includes residue energy of node.Including in the response feedback information should
Answer node father's node ID, can communication node ID, actual forwarding load, maximum can forward load and residue energy of node.
The source node selects one of them reachable from dummy node according to node load ability and residue energy of node
Via node adds Internet of Things as the forward node of source node.
In wireless sensor network, the life cycle for weighing a sensor network is typically the residual energy according to node
Measure to determine.One sensor network is started working until wherein there is the energy of node zero from networking, and this period is just
It is the life cycle of the sensor network.Therefore when selecting forward node, residue energy of node is considered, to extend sensor network
The life cycle of network is very necessary.
On the basis of above-described embodiment, the forward node determining module, as shown in figure 8, including：
Path queue generation module, for the size according to node load ability, to all up in dummy node
It is ranked up after node, the optimal selection path queue of generation source node access Internet of Things；The node load ability is maximum
The difference of load and actual forwarding load can be forwarded.
Specifically, the node load ability can forward the difference of load and actual forwarding load for maximum.Node load
Ability is to weigh a reachable via node on the premise of original data forwarding is completed, and can forward the ability of data, root
According to the size of node load ability, all reachable via nodes in dummy node are ranked up, source node can be obtained and connect
Enter Path selection optimal during Internet of Things.
Preferably, the path queue generation module, for respectively according to the size and residual energy of node load ability
The size of amount is descending to each reachable via node in dummy node to be ranked up two queues of generation；
Scoring is set to the reachable via node in two queues；
Two queues scoring summation to same reachable via node, obtains each reachable via node overall score, and foundation
Scoring is ranked up to obtain optimal selection path queue to the reachable via node in dummy node.
When carrying out forwarder selection, with reference to residue energy of node and node load ability, ensureing Non-blocking Data
Transmitting procedure in, effectively extend Network morals where source node.
Specifically, due to the size of node load ability and the size of dump energy, not it is evenly distributed, in order to
The optimal solution of Path selection is found faster, after two queues generates, the amount of can accept data to two queues and is remained respectively
Complementary energy is normalized, and value corresponding to the node load ability and dump energy that are obtained after normalized is made
For the scoring in two queues up to via node, then two queues scoring summation to same reachable via node again, is obtained
Generation is ranked up most preferably to the reachable via node in dummy node to each reachable via node overall score, and according to scoring
Select path queue.
When choose source node forward node when, according only to node load ability size sort, in fact it could happen that node
The too low situation of energy, and in the case where node energy is too low increase node data payload, inevitably result in node
Energy drastically consumes, and causes the end of life of individual node, and then shortens the life cycle of whole wireless network, and combines
The size of node load ability and how many pairs of dump energy reachable via nodes are ranked up, and can more reasonably be searched
Go out optimal data forwarding paths, each node load in balanced wireless network, extend Network morals where source node.
First node selecting module, the reachable relaying maximum for choosing optimal selection path queue interior joint load capacity
Node adds Internet of Things as the forward node of source node.
By above-mentioned scheme, optimal selection path queue, when the forward node failure of first node, first segment are generated
Point can find optimal transmission path with the most short time, without inquiring about the load capacity up to via node repeatedly, save
Due to inquiring about the node energy brought loss repeatedly.
On the basis of above-described embodiment, the forward node weight determining module, as shown in figure 9, also including：
State determining module, for when the forward node of the source node breaks down, described in into dummy node
Other in addition to the forward node of the source node send inquiry message up to via node.
Specifically, when forward node breaks down, source node needs to reselect forward node access Internet of Things, and appoints
On the one hand meaning selection forward node can cause the change of legacy network structure, cause more energy losses or hop count increase also
Either data transfer delay, and due to when source node accesses Internet of Things first, distance is stored with being jumped one up to table
The nearest reachable via node of source node, therefore forward node access Internet of Things is selected in being jumped again one up to table, it is most
Efficiency, and possess public father's node, therefore the weight in dummy node due to forming the reachable via node of dummy node
The forward node of new selection source node, the influence to legacy network structure are minimum.Source node removes the source into dummy node
Other outside the forward node of node send inquiry message up to via node, for confirming to be currently able to provide number for source node
Which reachable via node according to forwarding service has.
Information receiving module, for receiving other in addition to the forward node of the source node in dummy node up in
After node according to it is described inquiry message feedback can information on services.
Specifically, other in addition to the forward node of the source node in dummy node are receiving up to via node
Source node send inquiry message after, then to source node feedback can information on services, can information on services include node load ability.
Section point selecting module, for according to reception can information on services, will be optimal described in malfunctioning node information
Deleted in selection path queue, from described in transmission can in the reachable via node of information on services according to node load ability choose to
Few one adds Internet of Things up to via node for the forward node of the source node.
Specifically, source node is in other reachable relayings in receiving dummy node in addition to the forward node of the source node
Node feeding back can delete malfunctioning node information first after information on services, then in optimal selection path queue up in
It is updated after node according to the size for the node load ability that can be included in information on services, generates new optimal selection path team
Row, then choose at least one reachable via node from optimal selection path queue again and add Internet of Things for forward node.
Preferably, described information receiving module receives reachable via node feedback can information on services also include respectively may be used
Up to via node current residual node energy；Information receiving module is receive can be after information on services, from former optimal selection path
Malfunctioning node information is deleted in queue, then to the reachable via node in optimal selection path queue according to can be in information on services
Comprising node load ability size and current residual node energy be updated, generate new optimal selection path team
Row, then choose at least one reachable via node from optimal selection path queue again and add Internet of Things for forward node.
By such scheme, by such scheme, when the forward node of source node breaks down, from optimal selection path
The forward node information of source node is deleted in queue, reduces the invalid data in optimal selection path queue, is turned choosing again
Send out node when it is more efficient, while according to can information on services update optimal selection path queue so that the forward node of source node
Selection there is ageing, to avoid optimal selection path queue and actual node situation from not being inconsistent situation.
On the basis of above-described embodiment, the section point selecting module, as shown in figure 9, also including：
Load computing module, TPS loaded for calculating max-forwards needed for source node, and with optimal selection path queue
In the 1st up to via node node load ability Δ tps1Make comparisons；
If TPS≤Δ tps1, then described 1st of the source node selection is up to via node addition Internet of Things；
If TPS ＞ Δs tps1, then the preceding i node load abilities up to via node in optimal selection path queue are calculated
Sum Δ tpssum, until TPS≤Δ tpssum；
The source node is forwarded node load ability point of the load according to preceding i node in optimal selection path queue
I part is cut into, and chooses the i and adds Internet of Things up to forward node of the via node as the source node.
By such scheme, asking for source node data can not disposably be forwarded up to via node by effectively solving one
Topic.
Beneficial effect using above-mentioned further improvement project is to search optimal forward node, is advantageous to balanced wireless network
Each node load in network, extend Network morals where source node.
Reader should be understood that in the description of this specification, reference term " one embodiment ", " some embodiments ", " show
The description of example ", " specific example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure,
Material or feature are contained at least one embodiment or example of the present invention.In this manual, above-mentioned term is shown
The statement of meaning property need not be directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description
It can be combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this
The technical staff in field can be by the different embodiments or example described in this specification and the spy of different embodiments or example
Sign is combined and combined.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. a kind of internet of things data transmission method based on dummy node, it is characterised in that methods described includes:
All reachable via nodes of source node are obtained, and the reachable via node for possessing public father's node is formed into a void
Intend node；
The source node selects one of them up to via node as the source from dummy node according to node load ability
The forward node of node adds Internet of Things；
When the forward node of the source node breaks down, the source node is chosen at least one up in from dummy node
After node Internet of Things is accessed as the forward node of the source node.
2. according to the method for claim 1, it is characterised in that all reachable via nodes for obtaining source node, and
The reachable via node for possessing public father's node one dummy node of composition is included：
The reachable message of source node broadcast；
The response feedback information of all response nodes for receiving reachable message is received, the response feedback information includes response section
Father's node ID of point, can communication node ID, actual forwarding load and maximum can forward load；
A jump is stored in up in table using all response nodes as up to via node, and will be gathered around in all reachable via nodes
Dummy node is formed by the node of identical father's node ID.
3. according to the method for claim 2, it is characterised in that the source node is from dummy node according to node load energy
Power selects one of them to add Internet of Things as the forward node of source node up to via node, including：
According to the size of node load ability, all reachable via nodes in dummy node are ranked up, generate source node
Access the optimal selection path queue of Internet of Things；The node load ability can forward load and actual forwarding load for maximum
Difference；
Choose forward node of the maximum reachable via node of optimal selection path queue interior joint load capacity as source node
Add Internet of Things.
4. according to the method for claim 3, it is characterised in that when the forward node of the source node breaks down, institute
State source node and forward node access Internet of Things of at least one reachable via node as the source node is chosen from dummy node
Net, including：
When the forward node of the source node breaks down, into dummy node in addition to the forward node of the source node
Other send inquiry message up to via node；
Other in addition to the forward node of the source node in dummy node are received up to via node according to the inquiry
That asks message feedback can information on services；
According to reception can information on services, failure forward node information is deleted from the optimal selection path queue,
Turn of at least one reachable via node for the source node can be chosen from described in transmission in the reachable via node of information on services
Send out node and add Internet of Things.
5. according to the method for claim 4, it is characterised in that it is described from described in transmission can information on services reachable relaying section
At least one reachable via node is chosen in point and adds Internet of Things for forward node, including：
The max-forwards load TPS needed for the source node is calculated, and is saved with the 1st in optimal selection path queue up to relaying
The node load ability Δ tps of point1Make comparisons；
If TPS≤Δ tps1, then described 1st of the source node selection is up to forwarding section of the via node as the source node
Point adds Internet of Things；
If TPS ＞ Δs tps1, then the preceding i node load ability sums up to via node in optimal selection path queue are calculated
Δtpssum, until TPS≤Δ tpssum；
The source node is forwarded load according to preceding i in the optimal selection path queue node load energy up to via node
Power is divided into i part, and chooses the i and add Internet of Things up to forward node of the via node as the source node.
A kind of 6. data transmission of internet of things system based on dummy node, it is characterised in that including：
Dummy node determining module, for obtaining all reachable via nodes of source node, and public father's node will be possessed
A dummy node is formed up to via node；
Forward node determining module, for selecting one of them up to via node according to node load ability from dummy node
Forward node as the source node adds Internet of Things；
Forward node weight determining module, for when the forward node of the source node breaks down, being chosen from dummy node
At least one reachable via node accesses Internet of Things as the forward node of the source node.
7. system according to claim 6, it is characterised in that the dummy node determining module includes：
Message sending module, for broadcasting reachable message；
Feedback reception module, for receiving the response feedback information of all response nodes for receiving reachable message, the response
Father's node ID, actual forwarding load and the maximum that feedback information includes response node can forward load；
Node confirms module, and a jump is stored in up in table using all response nodes as reachable via node, and by it is all can
The node for possessing identical father's node ID up in via node forms a dummy node.
8. system according to claim 6, it is characterised in that the forward node determining module includes：
Path queue generation module, for the size according to node load ability, to all up to relaying section in dummy node
Point is ranked up, the optimal selection path queue of generation source node access Internet of Things；The node load ability is that maximum can turn
The difference of hair load and actual forwarding load；
First node selecting module, the reachable via node maximum for choosing optimal selection path queue interior joint load capacity
Forward node as the source node adds Internet of Things.
9. system according to claim 8, it is characterised in that the forward node weight determining module includes：
State determining module, for when the forward node of the source node breaks down, the source to be removed into dummy node
Other outside the forward node of node send inquiry message up to via node；
Information receiving module, for other described in receiving in dummy node in addition to the forward node of the source node up in
After node according to it is described inquiry message feedback can information on services；
Section point selecting module, for according to reception can information on services, by malfunctioning node information from it is described most preferably
Select in path queue and delete, at least one reachable via node can be chosen in the reachable via node of information on services from described in transmission
Internet of Things is added for the forward node of the source node.
10. system according to claim 9, it is characterised in that the section point selecting module includes：
Computing module is loaded, TPS is loaded for calculating max-forwards needed for source node, and with optimal selection path queue the
1 node load ability Δ tps up to via node1Make comparisons；
If TPS≤Δ tps1, then described 1st of the source node selection is up to forwarding section of the via node as the source node
Point adds Internet of Things；
If TPS ＞ Δs tps1, then the preceding i node load ability sums up to via node in optimal selection path queue are calculated
Δtpssum, until TPS≤Δ tpssum；
The source node is forwarded load according to preceding i in the optimal selection path queue node load energy up to via node
Power is divided into i part, and chooses the i and add Internet of Things up to forward node of the via node as the source node.
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