CN106102017A - The network-building method of a kind of tree-shaped multihop network and Wireless Telecom Equipment - Google Patents
The network-building method of a kind of tree-shaped multihop network and Wireless Telecom Equipment Download PDFInfo
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- CN106102017A CN106102017A CN201610377369.3A CN201610377369A CN106102017A CN 106102017 A CN106102017 A CN 106102017A CN 201610377369 A CN201610377369 A CN 201610377369A CN 106102017 A CN106102017 A CN 106102017A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- 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 invention discloses the network-building method of a kind of tree-shaped multihop network, network includes gateway node, via node and three kinds of logical nodes of terminal node；Terminal node directly can communicate with gateway node, it is also possible to the relaying subtree consisting of or several via nodes and gateway node communication；Gateway node, one or more via node of its association and terminal node one honeycomb of composition, adjacent honeycomb is distributed by frequency and multiplexing is avoided interfering, and forms a cellular wide area network network.The present invention passes through a tree, rather than traditional mesh network structure, achieve the Wide Area Network based on multihop network to cover, a kind of tree-shaped multihop network method is by the maintenance costs needed for a multihop network, including frequency spectrum resource and battery power consumption, while being minimized, remain to well support the MANET of multihop network, two-way communication between self-recoverage, and gateway support and terminal node.
Description
Technical field
The present invention relates to the network-building method of a kind of honeycomb fashion wide area Internet of Things, particularly to one by gateway node, relaying
Node and three kinds of logical nodes of terminal node are formed, the network-building method of the Internet of Things honeycomb containing tree-shaped multihop network；This
Bright also relate to a kind of Wireless Telecom Equipment supporting via node in described tree-shaped multihop network.
Background technology
Mesh network (Mesh Networks) is modal Internet of Things, or referred to as Ad hoc network.In mesh network often
One node can serve as message forward node, and each message forward node is referred to as " jump ".The coverage of mesh network
By the increase of node or " jumping figure ", can infinitely extend in theory, because the node newly increasing can pass through adjacent " one
Jump " node for data forwarding, thus realize and any one node communication of volume in network.But traditional mesh network structure should in reality
Very many limitation in.Particularly, with the increasing of node, the expansion of network size, problems with can become serious, actual
On limit nodes or the network size of mesh network:
First, the reliability of message transmissions significantly reduces, and time delay significantly improves.Because the Successful transmissions of a message requires
Transmission path on every " one jump " or each message forward node do not go wrong.It means that often increase " one jumps ", netted
The average end-to-end message transmissions packet loss of net or time delay all can improve accordingly；
Secondly, with increasing of network node, network topology becomes very complicated, and the interruption of each link all can cause
The topology of whole network is recombinated, and for Internet of Things, recombinates each time and all can consume substantial amounts of energy and adjacent node
Carry out the exchange of topology information, including send and receive network operation message；
Again, under normal circumstances, the node of a multi-hop mesh networks needs regularly to exchange with each adjacent node
Link maintenance message.It means that increasing with network node, the increase of network node density, the conventional dimension between node
Protect message flow and may exceed the message amount of data traffic of reality own.On the other hand, if none of mechanism, allow not
Sending with node, or broadcast, the moment fork of link maintenance message, the inevitably link maintenance from different nodes
Broadcast singal can conflict mutually, and this may cause more safeguarding traffic overhead, may cause an Internet of Things in actual applications
Net node or, Internet of Things inductor terminal, electric quantity consumption promote rapidly, the electricity ultimately resulting in part of nodes is rapidly depleting,
So that whole network become very unstable.
Content of the invention
It is an object of the invention to overcome the deficiency of prior art, the network-building method and of a kind of tree-shaped multihop network is provided
Plant the Wireless Telecom Equipment supporting via node in described tree-shaped multihop network, for existing mesh network (mesh) network-building method
The problems such as high expense, frequently topology restructuring, the network stabilization causing decline and power consumption increase, by needed for a multihop network
Maintenance costs, including frequency spectrum resource and battery power consumption, while being minimized, well support MANET, self-recoverage, and
Hold the two-way communication between gateway and terminal node.
The technical solution adopted for the present invention to solve the technical problems is: provide the networking side of a kind of tree-shaped multihop network
Method, network includes: gateway node, via node and three kinds of logical nodes of terminal node；
Described terminal node and described gateway node are directly connected to or are indirectly connected with communicate by setting up；Described
Connect in succession and include between described terminal node and described gateway node, be connected with a described via node, or be connected with by
One tree-shaped multihop network (relaying subtree) of multiple described via nodes composition.
Preferably, described gateway node is connected with one or more relaying subtree；Different relaying subtrees can according to the time-division, frequently
Point or the mode of Stochastic accessing and a gateway node communication.
Preferably, described via node is according to the time frame of a fixed cycle, periodically sends broadcast singal.
Preferably, one time of all trunk node selection in same described time frame, under a gateway node
The difference of frame is fixed time slot and is sent broadcast singal, it is to avoid conflict.
Preferably, each progression relaying subtree or height limitation are in n level；Under it can be accessed by each via node
The number of one-level via node is limited in m；The restriction of the number to next stage via node for the via node of different stage can
With difference；Described n and described m is the integer more than or equal to 1.
Preferably, the corresponding fixing numbering in position in logical network topology for each via node, described numbering
And corresponding via node usually safeguarded by upper level via node or a network element being responsible for safeguarding network topology.
Preferably, a via node accesses upper level via node, or re-establishes even with upper level via node
When connecing, upper level via node, associated gateway node or be responsible for safeguard the network element of network topology distribute and send one by
The numbering that its logical network topology position determines is to corresponding via node.
Preferably, a via node access gateway node, or re-establish when being connected with gateway node, described gateway
Node or be responsible for safeguards that the network element of network topology distributes and sends a numbering being determined by its logical network topology position
To corresponding via node.
Preferably, described via node is according to entrained by the broadcast singal of the gateway node listening to or other via nodes
Information select a gateway node or other via nodes to set up to connect；Described terminal node is according to the gateway node listening to
Or the information entrained by the broadcast singal of via node selects a gateway node or via node to set up connection；Described carry
Information includes one or more in the rank, electricity, data traffic, broadcast signal strength that broadcast singal carries.
Preferably, described via node or described terminal node prioritizing selection gateway node are set up and are connected；Unsuitable
During gateway node, described trunk node selection suitable upper level via node is set up and is connected, and described terminal node selects suitable
Via node set up connect.
Preferably, described gateway node, one or more via node of its association and terminal node one honeycomb of composition；
Adjacent honeycomb sends broadcast singal at different fixing time slots, and is distributed by frequency and be multiplexed guarantee honeycomb transmission broadcast letter
Number the honeycomb that is adjacent of time slot to send the time slot of broadcast singal not overlapping, but its with the gateway under non-conterminous honeycomb or in
The time slot that the node that continues sends broadcast singal can be overlapping.
A kind of Wireless Telecom Equipment, supports the via node in the network-building method of a kind of tree-shaped multihop network, comprising: one
Or more than one independent wireless module；
Each independent wireless module all includes wireless transceiver, center processor, memory module and battery module；
Described center processor is used for realizing the network-building method of tree-shaped multihop network, and according to described tree-shaped multihop network group
Waking up up or dormancy time of the broadcast cycle of network method and sequence control self and wireless transceiver；
Described wireless transceiver and described center processor are interengageable for delivering to the wireless signal receiving described
The signal that center processor is carried out after processing and processing is transmitted；
Described memory module and described center processor are interengageable for preserving the link information of next stage via node；
Described battery module is connected to as described nothing with described wireless transceiver, center processor and memory module respectively
Line transceiver, center processor, memory module provide power supply；
Including during more than one independent wireless module, described wireless module is interconnected by respective center processor phase
Connect.
Preferably, described wireless module undertakes the communication with gateway node, other via nodes and terminal node, bag simultaneously
Include transmission and receive data.
Preferably, described wireless module operates in different wireless communication standards or frequency range.
Preferably, each wireless module works alone with the form of single mode one-segment or single mode multiband.
Preferably, interacted by wired data interface or control signal interface between described wireless module.
Preferably, row clock synchronization is entered by interface clock signal or control signal interface between described wireless module；Institute
State clock synchronization and include clock rate synchronization and clock phase synchronization.
Preferably, each wireless module can independent dormancy or wake up up, each wireless module can also use outside
Control signal wakes up other Wireless Telecom Equipments up by control signal interface.
The technical scheme that the present invention provides has the benefit that
1st, send broadcast singal by selecting the different time-gap of the time frame of fixed cycle, it is to avoid gateway node and
The broadcast singal conflict that the via node of its association sends；
2nd, gateway node, one or more via node of its association and terminal node, form a honeycomb, adjacent honeybee
Nest is distributed by frequency and multiplexing is avoided interfering, it is achieved that making full use of of limited spectrum resources；
3rd, by distributing a simultaneously numbering being determined by its logical network topology position for each via node so that each
Via node is only responsible for safeguarding and is kept, with it, the next stage via node or the terminal node that are connected, without safeguarding that it is affiliated
The topology of other relaying subtrees in the topological or same honeycomb of whole relaying subtree.
4th, the network-building method of tree-shaped multihop network makes network can well support MANET and self-recoverage, and gateway support
Two-way communication between node and terminal node；
5th, the center processor of a kind of Wireless Telecom Equipment is used for realizing the network-building method of tree-shaped multihop network, and according to institute
State waking up up or dormancy time of tree-shaped multihop network network-building method control self and wireless transceiver, thus reduce whole network
Battery power consumption.
Below in conjunction with drawings and Examples, the present invention is described in further detail, but the tree-shaped multihop network of the one of the present invention
The network-building method of network and Wireless Telecom Equipment are not limited to embodiment.
Brief description
Fig. 1 is the networking schematic diagram of a kind of tree-shaped multihop network of the present invention；
Fig. 2 is the structure chart of a kind of Wireless Telecom Equipment of the present invention.
Detailed description of the invention
Seeing Fig. 1, the network-building method of a kind of tree-shaped multihop network, network includes: gateway node the 10th, via node 20 and
30 3 kinds of logical nodes of terminal node；
Described terminal node 30 and described gateway node 10 are directly connected to or are indirectly connected with communicate by setting up；Institute
State and be indirectly connected with including between described terminal node 30 and described gateway node 10, be connected with a described via node 20, or
Person is connected with by multiple described relaying 20 tree-shaped multihop networks (relaying subtree) forming of joint.Concrete, described relaying
Two grades of relaying joints that the one-level via node that node can include with gateway node 10 is directly connected to is connected with one-level via node
Point ..., the n level via node being connected with n-1 level via node, described terminal node 30 can direct and described gateway node 10
Connect, it is also possible to connect with one-level via node or other any level via nodes as required.
Further, described gateway node 10 is connected with one or more relaying subtree, different relaying subtrees according to the time-division,
The mode of frequency division or Stochastic accessing and a gateway node communication.
Further, each relaying progression of subtree or height limitation are in n level, i.e. foregoing can comprise in n level
Continue node；The number to the next stage via node that it can access for each via node is limited in m, i.e. one via node
Multipotency accesses m next stage node；The restriction of the number to next stage via node for the via node of different stage can not
With；Described n and described m is the integer more than or equal to 1.
Further, described gateway node 10 and described via node 20 are according to the time frame of a fixed cycle, cycle
The transmission broadcast singal of property.Concrete, in same described time frame, under a gateway node 10 and this gateway node 10
All via nodes 20 select the difference of a time frame to fix time slot and send broadcast singal, it is to avoid conflict.Broadcast singal sends
Time slot can be safeguarded by described gateway node 10 is unified, the number of the fixing time slot arranging in described time frame is more than or equal to described
Gateway node 10 and the number summation of all via nodes associated with it.
Further, the corresponding fixing numbering in position in logical network topology for each via node 20, described
Numbering and corresponding via node thereof are usually safeguarded by upper level via node or a network element being responsible for safeguarding network topology.
Concrete, a via node 20 accesses upper level via node, or re-establishes with upper level via node
During connection, upper level via node distributes and sends a numbering being determined by its logical network topology position to corresponding relaying
Node, as one-level via node gives two grades of via nodes distribution one according to position in logical network topology for two grades of via nodes
Numbering is simultaneously sent to two grades of via nodes by individual numbering, and described numbering is safeguarded by one-level via node.In addition it is also possible to pass through net
Artis or be responsible for safeguards that the network element of network topology distributes and sends a volume being determined by its logical network topology position
Number give corresponding via node, described responsible safeguard network topology network element can be in network one be responsible for specially safeguard
The node of network topology.
Concrete, via node 20 access gateway node, or re-establish when being connected with gateway node, described net
Artis 10 or be responsible for is safeguarded that the network element of network topology distributes and sends one and is determined by its logical network topology position
Numbering is to corresponding via node.
Further, described via node is according to the broadcast singal institute of the gateway node 10 listening to or other via nodes
The information carried selects a gateway node 10 or other via nodes to set up connection；Described terminal saves what 30 bases listened to
Information entrained by the broadcast singal of gateway node 10 or via node selects a gateway node or via node to set up connection；
The described information carried includes the one or several in the rank, electricity, data traffic, broadcast signal strength that broadcast singal carries
Kind.
Further, described via node 20 or described terminal node 30 prioritizing selection gateway node 10 are set up and are connected；Not yet
When having suitable gateway node 10, described via node 20 selects suitable upper level via node to set up connection, described terminal
Node 30 selects suitable via node 20 to set up connection.Concrete, the relaying subtree being made up of via node and terminal node
30 can dynamically change network topology according to signal propagation quality makes the node connection in network more equalize.
Further, one or more via nodes 20 and the terminal node 30 of described gateway node the 10th, its association forms
One honeycomb；Adjacent cell (via node of gateway and association) sends the time slot fork of broadcast singal, different fixing when
Gap is carried out, and enters line frequency distribution and multiplexing according to certain rule, so that it is guaranteed that honeycomb (gateway and under all in
Continue node) time slot of gateway under the honeycomb of the time slot broadcasted and direct neighbor or via node is not overlapping, but have
May be overlapping with the time slot of the gateway under the honeycomb of not direct neighbor or via node.Concrete, the service of Internet of Things
Dividing into orthohexagonal boy district one by one, each boy district sets a gateway node, result in formation of shape and exactly like " honeybee
The structure of nest ", thus by a gateway node, its association one or more relaying subtrees become with terminal node network consisting
For honeycomb, the network of adjacent boy Qu Zucheng is referred to as adjacent cell.Each honeycomb uses one group of channel, if two honeycomb phases
Every enough remote, it is possible to use same group of channel, so that limited frequency resource can be repeated profit in certain scope
With.Additionally, when capacity is inadequate, it is possible to reduce the scope of honeycomb, mark off more honeycomb, carry high-frequency further
Utilization ratio.
See Fig. 2, a kind of Wireless Telecom Equipment, support the via node in the network-building method of a kind of tree-shaped multihop network,
Including: one or more independent wireless modules 40；
Each independent wireless module all includes wireless transceiver the 401st, center processor the 402nd, memory module 403 and battery
Module 404；
Described center processor 402 is used for realizing the network-building method of tree-shaped multihop network, and according to described tree-shaped multihop network
Waking up up or dormancy time of the broadcast cycle of network network-building method and sequence control self and wireless transceiver；
Described wireless transceiver 401 and described center processor 402 are interengageable for sending the wireless signal receiving
The signal carrying out after processing and processing to described center processor 402 is transmitted；
Described memory module 403 and described center processor 402 are interengageable for preserving the company of next stage via node
Connect information；
Described battery module 404 is connected with described wireless transceiver the 401st, center processor 402 and memory module 403 respectively
For providing power supply for described wireless transceiver the 401st, center processor the 402nd, memory module 403；
Including during more than one independent wireless module 40, described wireless module 40 passes through respective center processor 402
It is connected with each other.
Preferably, described wireless module 40 undertakes and gateway node the 10th, other via nodes and terminal node 30 simultaneously
Communication, including send and receive data.
Preferably, described wireless module 40 operates in different wireless communication standards or frequency range.
Preferably, each wireless module 40 works alone with the form of single mode one-segment or single mode multiband.
Preferably, interacted by wired data interface or control signal interface between described wireless module 40.
Preferably, row clock synchronization is entered by interface clock signal or control signal interface between described wireless module 40；
The synchronization of described clock includes clock rate synchronization and clock phase synchronization.
Preferably, each wireless module 40 can independent dormancy or wake up up, each wireless module 40 can also use
External control signal wakes up other Wireless Telecom Equipments up by control signal interface.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (13)
1. the network-building method of a tree-shaped multihop network, it is characterised in that network includes: gateway node, via node and end
Three kinds of logical nodes of end node；Described terminal node and described gateway node are directly connected to or are indirectly connected with carry out by setting up
Communication；Described being indirectly connected with includes being connected with a described via node between described terminal node and described gateway node,
Or it is connected with the relaying subtree being made up of multiple described via nodes.
2. the network-building method of tree-shaped multihop network according to claim 1, it is characterised in that: described gateway node is connected with
One or more relaying subtrees；Different relaying subtrees are led to according to mode and a gateway node of time-division, frequency division or Stochastic accessing
Letter.
3. the network-building method of tree-shaped multihop network according to claim 1, it is characterised in that: described via node is according to one
The time frame of individual fixed cycle, periodically sends broadcast singal.
4. the network-building method of tree-shaped multihop network according to claim 3, it is characterised in that: at same described time frame
In, the difference of one time frame of all trunk node selection under a gateway node is fixed time slot and is sent broadcast singal, it is to avoid
Conflict.
5. the network-building method of tree-shaped multihop network according to claim 1, it is characterised in that: the progression of each relaying subtree
Or height limitation is in n level；The number to the next stage via node that it can access for each via node is limited in m；Different
The restriction of the number to next stage via node for the via node of rank can be different；Described n and described m is for more than or equal to 1
Integer.
6. the network-building method of tree-shaped multihop network according to claim 5, it is characterised in that: each via node is in logic
The corresponding fixing numbering in position in network topology, described numbering and corresponding via node thereof are by upper level via node
Or a network element being responsible for safeguarding network topology usually safeguards.
7. the network-building method of tree-shaped multihop network according to claim 6, it is characterised in that: a via node accesses
One-level via node, or re-establish when being connected with upper level via node, upper level via node, associated gateway node or
It is responsible for safeguarding that the network element of network topology distributes and sends a numbering being determined by its logical network topology position to correspondence
Via node.
8. the network-building method of tree-shaped multihop network according to claim 6, it is characterised in that: a via node access network
Artis, or re-establish when being connected with gateway node, described gateway node or be responsible for safeguarding the network element of network topology
Distribute and send a numbering being determined by its logical network topology position to corresponding via node.
9. the network-building method of tree-shaped multihop network according to claim 3, it is characterised in that: described via node is according to detecing
Information entrained by the broadcast singal of the gateway node heard or other via nodes selects a gateway node or other relayings
Node is set up and is connected；Information according to entrained by the broadcast singal of the gateway node listening to or via node for the described terminal node
Select a gateway node or via node to set up to connect；The described information carried include rank, electricity that broadcast singal carries,
One or more in data traffic, broadcast signal strength.
10. the network-building method of tree-shaped multihop network according to claim 9, it is characterised in that: described via node or institute
State terminal node prioritizing selection gateway node and set up connection；When not having suitable gateway node, described trunk node selection is suitable
Upper level via node set up and connect, described terminal node selects suitable via node to set up to connect.
The network-building method of 11. tree-shaped multihop networks according to claim 4, it is characterised in that: described gateway node, Qi Guan
One or more via node of connection and terminal node one honeycomb of composition；Adjacent honeycomb sends wide at different fixing time slots
Broadcast signal, and distributed by frequency and be multiplexed the honeycomb transmission broadcast letter ensureing that the time slot of honeycomb transmission broadcast singal is adjacent
Number time slot not overlapping, but its with non-conterminous honeycomb under gateway or via node send the time slot of broadcast singal and can weigh
Folded.
12. 1 kinds of Wireless Telecom Equipments, support the via node in the network-building method of a kind of tree-shaped multihop network, and its feature exists
In, comprising: one or more independent wireless modules；
Each independent wireless module all includes wireless transceiver, center processor, memory module and battery module；
Described center processor is used for realizing the network-building method of tree-shaped multihop network, and according to described tree-shaped multihop network networking side
Waking up up or dormancy time of the broadcast cycle of method and sequence control self and wireless transceiver；
Described wireless transceiver and described center processor are interengageable for the wireless signal receiving is delivered to described center
The signal that processor is carried out after processing and processing is transmitted；
Described memory module and described center processor are interengageable for preserving the link information of next stage via node；
Described battery module is connected to described wireless transceiver, center processor and memory module respectively as described wireless receipts
Device, center processor, memory module offer power supply are provided；
Including during more than one independent wireless module, described wireless module is connected with each other by respective center processor.
13. a kind of Wireless Telecom Equipments according to claim 12, it is characterised in that: described independent wireless module is same
When undertake the communication with gateway node, other via nodes and terminal node, including send and receive data.
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