CN104349417B - The network-building method of regional submarine communication network based on short life cycle - Google Patents
The network-building method of regional submarine communication network based on short life cycle Download PDFInfo
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- CN104349417B CN104349417B CN201310340520.2A CN201310340520A CN104349417B CN 104349417 B CN104349417 B CN 104349417B CN 201310340520 A CN201310340520 A CN 201310340520A CN 104349417 B CN104349417 B CN 104349417B
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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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
Abstract
The present invention relates to a kind of network-building method of the regional submarine communication network based on short life cycle, including：The original state of each node is arranged to " unallocated state "；A node is selected, is broadcasted " cluster head broadcasting packet ", time-out time is set, oneself state is arranged to " applying to become cluster head "；Other nodes reply " adding cluster request message ", the node representated by source address are set to the leader cluster node of oneself, oneself state is revised as " cluster member " after " cluster head broadcasting packet " is received；The node of broadcast " cluster head broadcasting packet " receives " adding cluster request message " before the timeout, cancel timer, node representated by source address in " adding cluster request message " is set to cluster member, oneself state is set to " cluster head ", otherwise, oneself state is set to " unallocated state ", waits the broadcast " cluster head broadcasting packet " of next round, or receives " the cluster head broadcasting packet " transmitted by other nodes.
Description
Technical field
The present invention relates to underwater acoustic network field, and specifically, the present invention relates to a kind of regionality based on short life cycle
The network-building method of subsurface communication net.
Background technology
Ocean occupies the area of earth surface more than 70%, and mean depth reaches 4km, the oil gas that is richly stored with, power ore deposit
The resources such as production.It is the adjuster of global environment meanwhile ocean is the main thoroughfare of whole world transport, and a variety of natural calamities
Cradle and spot.Therefore, ocean is the grand strategy space for maintaining human social, development to the mankind and
Social progress plays an important role.Each maritime state has all put into observation and exploitation of the substantial amounts of financial resources development to ocean in succession,
To capture whip hand in being controlled in marine resources.
Wireless communications environment in air is compared to, underwater acoustic channel is the time delay and Doppler's double diffusion letter of a time-varying
Road, channel condition very severe.The velocity of sound in water typically in 1500m/s or so, with the spread speed 3.0 of radio wave ×
108M/s is compared to poor 5 orders of magnitude.In addition, the velocity of sound is also influenceed by many factors such as temperature, salinity and pressure, and with
The movement velocity of carrier, fluctuating velocity of the water surface etc. can compare, therefore the time variation of multi-path effect, Doppler frequency shift and channel is more
Add obvious and complicated.The adverse circumstances of underwater sound communication and the limitations affect of nodal function to underwater acoustic network agreement design, and
Need to develop more optimal procotol according to different application scenarios.
Network can be divided into two kinds of fixed network and self-organizing network according to whether routing iinformation is known a priori by.
In fixed, node location is fixed, and strict measurement has typically just been carried out when laying, all
Routing iinformation just implantation node before networking.Fixed route is frequently used in the network of central controlled in wireless domain
In, all nodes can be with gateway direct communication.In underwater sound field, fixed route also has relatively broad application, especially
It is used in combination with the multiple access technology such as TDMA, CDMA so that network performance has larger lifting.But fixed route there is also
Some problems, such as autgmentability are poor, node is not easy to replace, it is impossible to suitable for all scenes.
In ad hoc networks, the celsius and anti-Routing Protocol of self-organizing can be divided into according to the time of Route establishment again before
Two kinds of feedback formula.In preceding celsius route, route establishment process occurs in the initialization procedure of network.Network horse back once laying
All routes that may be needed are begun setting up, regardless of whether the routing iinformation can really be used later.Routing iinformation meeting
Rebuild periodically, whether be equally indifferent to the routing iinformation of reconstruction can be used.Such agreement is using DSDV as representative.Feedback
Under formula route, the route of the node only can be just established when node needs and sends packet to certain node, packet is subsequent
It is transmitted.Long-term no route can be periodically removed during route maintenance.Such agreement is using AODV as representative.
The selection of route is determined according to the position of nodes based on the route of geographical location information, reduces route
The scope of data packet broadcast during foundation.The waste of energy is not only reduced, the probability of packet conflict is also reduced, reduces communication
Time delay.Based on the route of geographical location information using VBF as representative.
The underwater acoustic network that regional submarine for short life cycle communicates typically has the characteristics that：Network size compared with
Small, node position after laying is more fixed, and the drift of sonic velocity change and node will not cause larger change to topological structure
Become, but be not easy to ensure due to laying precision, network actual Topology connection situation can not be learnt the initial stage of laying.Based on underwater sound net
The These characteristics of network, underwater acoustic network need the Routing Protocol using self-organizing.Simultaneously as the topological structure of underwater acoustic network is relative
Fixed, the working time of network is shorter (general one action process maintains 8 minutes or so), wouldn't need periodically to remove old road
By, it is not required that regularly update route.
The Route establishment of AODV agreements of the prior art postpones higher, this meeting in the very high underwater acoustic network of propagation delay
Further increase, the requirement of quickly networking can not be met.And VBF protocol requirements node can with the angle of measurement signal sender,
This can not be met in underwater sound communication, therefore also be not used to the establishment of underwater acoustic network.Due to each in underwater acoustic network
The route of individual node need not regularly update, therefore DSDV agreements and do not apply to yet.
The content of the invention
It is an object of the invention to overcome the network-building method of subsurface communication net of the prior art can not meet quickly networking
It is required that the defects of, so as to provide a kind of rapid networking method.
To achieve these goals, the invention provides a kind of group of the regional submarine communication network based on short life cycle
Network method, including：
Step 1), the original state for each node for treating networking is disposed as " unallocated state "；Networking is treated from described
Each node in select a node, by the node broadcast " cluster head broadcasting packet ", for " waiting to be added on the node
Cluster request message timer " sets time-out time, is then arranged to oneself state " applying to become cluster head "；
Step 2), " cluster head is wide receiving for the other nodes for treating in networking in addition to the node of broadcast " cluster head broadcasting packet "
Report text " after, with ALOHA modes respectively to the node reverts back " adding cluster request message " for sending " cluster head broadcasting packet ", and will
The node representated by source address in " the cluster head broadcasting packet " that is received is set to the leader cluster node of oneself, by itself shape of node
State is revised as " cluster member "；
Step 3), judge the node of broadcast " cluster head broadcasting packet " before " waiting cluster request message timer to be added " time-out
Any one " adding cluster request message " whether is received, if receiving, performs next step, otherwise, performs step 5)；
Step 4), the node of broadcast " cluster head broadcasting packet " are receiving any one " adding cluster request message " for the first time
When, cancel timer, the node representated by the source address in received " adding cluster request message " is set to the cluster of oneself
Member, and the state of node itself is set to " cluster head "；When receiving " adding cluster request message " after the node again, described in
Source address in " adding cluster request message " is set to the cluster member of oneself, until terminating after no longer receiving " adding cluster request message "
Networking operation；
Oneself state is set to " unallocated state " by step 5), the node of broadcast " cluster head broadcasting packet ", under then waiting
The broadcast " cluster head broadcasting packet " of one wheel, or receive " the cluster head broadcasting packet " transmitted by other nodes.
In above-mentioned technical proposal, also include afterwards in described step 2)：
Step a), treat that other nodes in networking in addition to the node of broadcast " cluster head broadcasting packet " do not receive that " cluster head is wide
Report text ", by the node broadcasts " cluster head broadcasting packet ", set for " waiting cluster request message timer to be added " on the node
Time-out time, then oneself state is arranged to " applying to become cluster head "；
Step b), after " cluster head broadcasting packet " is received after other nodes in networking, if the oneself state of the node
It has been " cluster member " " the cluster head broadcasting packet " then newly received without response, if the oneself state of the node is " cluster head ",
" force and add the cluster message " is replied to the source node of broadcast " cluster head broadcasting packet " with ALOHA modes, and the node is added
Into the cluster membership table of oneself；
Step c), after the node of broadcast " cluster head broadcasting packet " receives " force and add the cluster message " in the step a), take
Disappear timer, and the source address of " force add the cluster message " is set to the leader cluster node of oneself, and state is arranged to " cluster into
Member ".
In above-mentioned technical proposal, in described step 1), a node is selected from each node for treating networking
Using randomly selected mode.
In above-mentioned technical proposal, " the cluster head broadcasting packet " includes two fields, and chb_type fields therein include 4
Individual bit, for representing type of message；Chb_src fields include 4 bits, for representing cluster head source address；
" the adding cluster request message " includes three fields, and jcr_type fields therein include 4 bits, for table
Show type of message；Jcr_src fields include 4 bits, and the source address of the node of cluster is added for representing；Jcr_dst words
Section includes 4 bits, and the destination address of the node of cluster is added for representing.
In above-mentioned technical proposal, " force and add the cluster message " includes three fields, and fjr_type therein includes 4
Individual bit, for representing type of message, fjr_src includes 4 bits, the source address of the node for representing to force addition cluster,
Fjr_dst includes 4 bits, the destination address of the node for representing to force addition cluster.
The advantage of the invention is that：
The present invention can realize the quickly networking of subsurface communication net, be advantageous to improve the efficiency of subsurface communication.
Brief description of the drawings
Fig. 1 is the flow chart of the network-building method of the present invention；
Fig. 2 is the schematic diagram of organized subsurface communication network in one embodiment.
Embodiment
In conjunction with accompanying drawing, the invention will be further described.
The network-building method of the present invention is small mainly for network size, and topological structure is relatively fixed, and the working time is short, it is necessary to same
Step and the use environment of positioning.
Network topology structure is to influence a key factor of network performance.The Basic Topological of underwater acoustic network has principal and subordinate
Two kinds of formula and peer-to-peer.In master-slave network, all network nodes are communicated by a Centroid.In peer-to-peer
In network, each node any one node can be communicated directly or by via node and other.When in network
When node number is less, the advantages of master-slave network has the Route establishment time shorter, and pass through a Centroid and other
Node communication can meet requirement, and network-building method of the invention creates underwater acoustic network using master-slave mode topological structure.
Before being elaborated to the network-building method of the present invention, the data structure employed in the present invention is subject to first
Introduce.
Four kinds of possible states be present in the node in underwater acoustic network：UNSSIGNED、CLUSTER_HEAD、CLUSTER_
MEMBER and TO_BE_HEAD；Unallocated state, cluster head are represented respectively, cluster member, apply to become cluster head.
Node in underwater acoustic network is related to three kinds of command messages during networking：Cluster head broadcasting packet is (hereinafter referred to as
CHB), add cluster request message (hereinafter abbreviation JCR), force add the cluster message (hereinafter abbreviation FJR).Wherein, CHB
Data structure is as shown in table 1, and the message includes two fields, and chb_type fields therein include 4 bits, for representing to report
Literary type；Chb_src fields include 4 bits, for representing cluster head source address.JCR data structure is as shown in table 2, the report
Text includes three fields, and jcr_type fields therein include 4 bits, for representing type of message；Jcr_src fields include
4 bits, the source address of the node of cluster is added for representing；Jcr_dst fields include 4 bits, for representing to want
Add the destination address of the node of cluster.FJR data structure is as shown in table 3, and the message includes three fields, fjr_ therein
Type includes 4 bits, and for representing type of message, fjr_src includes 4 bits, for representing to force the node for adding cluster
Source address, fjr_dst includes 4 bits, for representing to force the destination address for the node for adding cluster.
Table 1
Table 2
Table 3
In one embodiment, as shown in Fig. 2 a certain regional submarine communication network for it is expected to set up includes 3 nodes,
These nodes are indicated with 0,1,2 respectively, the mutual distance of these nodes should be not more than 100 meters.As shown in figure 1, below to this
The network-building method of regional submarine communication network illustrates.
Step 1), the original state for each node for treating networking is disposed as UNSSIGNED；The each of networking is treated from described
A node is selected in individual node, CHB is broadcasted by the node, time-out is set for " the waiting JCR timers " on the node
Time, then oneself state is arranged to " TO_BE_HEAD ".
When node is in " TO_BE_HEAD " state, the CHB transmitted by other nodes will not be responded.In the present embodiment
In, it is 2s for the time-out time set by " waiting JCR timers ", in other embodiments, can be also arranged as required to as it
He is worth.In this step, the mode for a node being selected from multiple nodes is random, in this example, it is assumed that selected
The node selected is node 1.
Step 2), after in networking except broadcast CHB node in addition to other nodes receive CHB after, distinguished with ALOHA modes
To transmission CHB node reverts back JCR, and the node representated by the source address in the CHB received is set to the cluster head section of oneself
Point, the oneself state of node is revised as CLUSTER_MEMBER.
Assume that it be node 1 to send CHB node above, therefore, treat the node 0 in networking and node 2 understand using node 1 as
The leader cluster node of itself, oneself state is revised as CLUSTER_MEMBER.
Step 3), judge whether the node for broadcasting CHB receives any one JCR before " waiting JCR timers " time-out, if
Receive, perform next step, otherwise, perform step 5).
Step 4), the node for broadcasting CHB cancel timer, received when receiving any one JCR for the first time
The node representated by source address in JCR is set to the cluster member of oneself, and the state of node itself is set to CLUSTER_HEAD；
When receiving JCR again after the node, only the source address in the JCR need to be set to the cluster member of oneself, " added until no longer receiving
Terminate networking operation after request into clusters message ".
Oneself state is set to UNSSIGED by step 5), broadcast CHB node, then waits the broadcast CHB of next round, or
Receive the CHB transmitted by other nodes.
Above is the basic step of the network-building method of the present invention.Particularity based on underwater acoustic network, also deposit in practical application
In such a case：Treat in other nodes in networking in addition to broadcast CHB node, some nodes receive CHB and successfully returned
Multiple JCR, and other nodes may not receive CHB due to link short duration failure.Now, these sections for not receiving CHB
Point can be as described by step 1)：CHB is broadcasted, time-out time is set for " waiting JCR timers ", oneself state is set
For " TO_BE_HEAD ".In this case, oneself state is arranged to CLUSTER_MEMBER node without response
The CHB newly received, and the node that oneself state is arranged to CLUSTER_HEAD is saved with source of the ALOHA modes to broadcast CBH
Point replys FJR, and the node is added in the cluster membership table of oneself.After the node for broadcasting CBH receives FJR, cancel timing
Device, FJR source address is set to the leader cluster node of oneself, and state is arranged to CLUSTER_MEMBER.
For example, it is assumed that node 0 receives CHB and successfully replys JCR, node 2 does not receive CHB and in outwards broadcast afterwards
CHB.Now, because the state of node 0 is CLUSTER_MEMBER, therefore other any CHB are not responding to；And the shape of node 1
State is CLUSTER_HEAD, replys FJR with source node (i.e. node 2) of the ALOHA modes to broadcast CBH, and node 2 is added to
In the cluster membership table of oneself.After node 2 receives FJR, cancel timer, FJR source address be set to the leader cluster node of oneself,
And state is arranged to CLUSTER_MEMBER.
Above is the step of network-building method of the invention, is described.The time used in network-building method of the present invention is divided below
Analysis.
If the duration of linear frequency modulation head is the X seconds, the bit number of packet is PacketSize, traffic rate
DataRate=600bps, maximum propagation delay is τmax=0.0667 second, discounting for the demodulation time of packet and CRC
Verification, then occur a packet time be about：
Unit：Second.
Broadcast " cluster head broadcasting packet (CHB) " time be：
The time that ALOHA modes send " add cluster request message (JCR) " is：
Similarly, the time that ALOHA modes send " force addition and change cluster message (FJR) " is：
Random-backoff time+(2 × X)+0.1867s.
According to above-mentioned time calculation, in example as shown in Figure 2, it is assumed that have three nodes, the position of node 0,1,2
Put respectively (0,0), (0,100), (50,86.6).Above networking mode is emulated with NS2, it is as a result as follows：
(1) when first node transmission CHB random-backoff time is 0s and packet loss and collision does not occur, the networking time
For 2.058s；
(2) when a node sends CHB, when two other node replys JCR simultaneously, JCR conflicts, MAC layer, which can increase, moves back
When keeping away window CW, then sending RTS after random back and no longer conflict, the networking time is 3.769s；
(3) when having two nodes while broadcasting CHB, CHB can be collided, the two nodes due to wait to oneself
JCR, the CHB that the 3rd node is sent will not be responded, so needing to wait the broadcast CHB of next round, the networking time is 4.958s.
(4) after broadcasting CHB for node 1, only node 0 receives CHB and successfully replys JCR, and node 2 is short out due to chain
Temporarily fail and confiscate CHB situation, emulated with NS2, the networking time is 4.408s.
The present invention can meet to complete networking in 5s, disclosure satisfy that and be actually needed substantially.
It should be noted last that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (5)
1. a kind of network-building method of the regional submarine communication network based on short life cycle, including：
Step 1), the original state for each node for treating networking is disposed as " unallocated state "；The each of networking is treated from described
A node is selected in individual node, " cluster head broadcasting packet " is broadcasted by the node, " to wait cluster to be added please on the node
Seek message timer " time-out time is set, then oneself state is arranged to " applying to become cluster head "；
Step 2), treat that other nodes in networking in addition to the node of broadcast " cluster head broadcasting packet " are receiving " cluster head broadcast report
After text ", with ALOHA modes respectively to the node reverts back of transmission " cluster head broadcasting packet " " adding cluster request message ", and will be connect
The node representated by source address in " the cluster head broadcasting packet " received is set to the leader cluster node of oneself, and the oneself state of node is repaiied
It is changed to " cluster member "；
Step 3), judge broadcast " cluster head broadcasting packet " node " waiting cluster request message timer to be added " time-out before whether
Any one " adding cluster request message " is received, if receiving, performs next step, otherwise, performs step 5)；
Step 4), the node for broadcasting " cluster head broadcasting packet " take when receiving any one " adding cluster request message " for the first time
Disappear timer, and the node representated by the source address in received " adding cluster request message " is set to the cluster member of oneself,
And the state of node itself is set to " cluster head "；When receiving " adding cluster request message " after the node again, " cluster is added described in
Source address in request message " is set to the cluster member of oneself, until terminating networking behaviour after no longer receiving " adding cluster request message "
Make；
Oneself state is set to " unallocated state " by step 5), the node of broadcast " cluster head broadcasting packet ", then waits next round
Broadcast " cluster head broadcasting packet ", or receive " the cluster head broadcasting packet " transmitted by other nodes.
2. the network-building method of the regional submarine communication network according to claim 1 based on short life cycle, its feature exist
In, in described step 2) after also include：
Step a), treat that other nodes in networking in addition to the node of broadcast " cluster head broadcasting packet " do not receive " cluster head broadcast report
Text ", by other node broadcasts " cluster head broadcasting packet " in addition to the node of broadcast " cluster head broadcasting packet ", on the node
" waiting cluster request message timer to be added " sets time-out time, is then arranged to oneself state " to apply to become cluster
Head "；
Step b), after " cluster head broadcasting packet " is received after other nodes in networking, if the oneself state of the node is
For " cluster member ", then " the cluster head broadcasting packet " newly received without response, if the oneself state of the node is " cluster head ", use
ALOHA modes reply " force and add the cluster message " to the source node of broadcast " cluster head broadcasting packet ", and the node is added to
In the cluster membership table of oneself；
Step c), after the node of broadcast " cluster head broadcasting packet " receives " force and add the cluster message " in the step a), it is fixed to cancel
When device, the source address of " force add the cluster message " is set to the leader cluster node of oneself, and state is arranged to " cluster member ".
3. the network-building method of the regional submarine communication network according to claim 1 or 2 based on short life cycle, its feature
It is, in described step 1), selects a node to use randomly selected mode from each node for treating networking.
4. the network-building method of the regional submarine communication network according to claim 1 or 2 based on short life cycle, its feature
It is, " the cluster head broadcasting packet " includes two fields, and chb_type fields therein include 4 bits, for representing to report
Literary type；Chb_src fields include 4 bits, for representing cluster head source address；
" the adding cluster request message " includes three fields, and jcr_type fields therein include 4 bits, for representing to report
Literary type；Jcr_src fields include 4 bits, and the source address of the node of cluster is added for representing；Jcr_dst field bags
4 bits are included, the destination address of the node of cluster is added for representing.
5. the network-building method of the regional submarine communication network according to claim 2 based on short life cycle, its feature exist
In " force and add the cluster message " includes three fields, and fjr_type therein includes 4 bits, for representing message
Type, fjr_src include 4 bits, and the source address of the node for representing to force addition cluster, fjr_dst includes 4 bits,
For the destination address for the node for representing to force addition cluster.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5987011A (en) * | 1996-08-30 | 1999-11-16 | Chai-Keong Toh | Routing method for Ad-Hoc mobile networks |
| CN101835099A (en) * | 2010-04-23 | 2010-09-15 | 西安电子科技大学 | Large-scale sensor network routing method based on cluster and RREP broadcast |
| CN102546323A (en) * | 2010-12-14 | 2012-07-04 | 中国科学院声学研究所 | Peer-to-peer network based on underwater sound and radio mixed channel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5561121A (en) * | 1993-11-09 | 1996-10-01 | American Cyanamid Company | Stable lyophilized thiotepa composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5987011A (en) * | 1996-08-30 | 1999-11-16 | Chai-Keong Toh | Routing method for Ad-Hoc mobile networks |
| CN101835099A (en) * | 2010-04-23 | 2010-09-15 | 西安电子科技大学 | Large-scale sensor network routing method based on cluster and RREP broadcast |
| CN102546323A (en) * | 2010-12-14 | 2012-07-04 | 中国科学院声学研究所 | Peer-to-peer network based on underwater sound and radio mixed channel |
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