CN103037466B - Delay tolerant network (DTN) routing strategy under light-weight infantry combat brigade scene - Google Patents
Delay tolerant network (DTN) routing strategy under light-weight infantry combat brigade scene Download PDFInfo
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- CN103037466B CN103037466B CN201210547059.3A CN201210547059A CN103037466B CN 103037466 B CN103037466 B CN 103037466B CN 201210547059 A CN201210547059 A CN 201210547059A CN 103037466 B CN103037466 B CN 103037466B
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Abstract
The invention belongs to the technical field of wireless communication and discloses a delay tolerant network (DTN) routing strategy under light-weight infantry combat brigade scene and based on a messenger directly under data. The messenger directly under the data comprises a routing sequence and a transmission information sequence, the routing sequence represents a moving sequence and is composed of serial numbers of transmission nodes, and a first number and a last number of the routing sequence are only a source node. The transmission sequence represents information which a transmitted by digital distribution frame (DDF) to each node, when the DDF reaches one target node and after the DDF finishes transmitting the information which a given by a data source to the node, the information is removed from the information sequence, the data source controls the messenger directly under the data, the other nodes can not request the DDF to conduct independent transmission, the DDF moves according to the routing sequence provided by a list, and finally the DDF returns to the data source. The DNT routing strategy of the messenger directly under the data has the advantages of being high in transmission efficiency and little in transmission interference.
Description
Technical field
The invention belongs to wireless communication technology field, be specifically related to the DTN routing policy under a kind of light-duty Ji Bu field operations trip scene.
Background technology
DTN (Delay Tolerant Networks) is delay-tolerant network, as planetary networks under some specific network environments, military Ad hoc network, sensor network, vehicle Ad hoc network, often can there is the phenomenon that network disconnects, cause message can not guarantee path end to end in transmitting procedure, so DTN is usually used to realize Wireless Data Transmission that is severe or that be disturbed under environment.
Light-duty Ji Bu field operations trip scene is that a kind of routed path part is known, and there is not end-to-end link, the communication resource is rare, and requires high specific communication scene to communication security.For this scene, before a lot of research does not all obtain desirable solution.Known based in the DTN routing policy of " data mule " and " postal delivery " agent, always inevitably run into a problem: these units bearing inter-node communication task are often by all nodes sharing, and therefore corresponding algorithm will make equilibrium to all internodal communication requirements.
Communication scenes model in light-duty Ji Bu field operations trip scene is as described below: in the region that a slice communication resource is extremely rare (as certain mountain area), a squad carries out special duty, squad personnel are divided into several action group and headquarter, group is similar to arcuation and is dispersed in zones of different in mountain area, and headquarter are positioned at the center of circle of the class circle that group position is formed.Owing to having high requirements to the crypticity of action, long distance mobile device does not carry in each action group, and all action groups be all in each other with the horizon range of headquarter outside, therefore cannot use the specific communication means such as semaphore.Headquarter and action group, there is not end to end network in action group, but the position of each action group is known each other by headquarter.In this scene, cannot contact directly between all action groups, all communication resources all concentrate on headquarter.
In light-duty Ji Bu field operations trip scene, first, infecting routing policy cannot use, because there is strict order of advancing in each action group, is in each other outside direct communication region and also deliberately arranges; Spray and wait for that routing policy requires information source, namely headquarter once send multiple data trnascription, and move at random in region, in this scene, headquarter only have the extremely limited communication resource, and multiple data trnascription probably outwardly exposes headquarter position when carrying out waiting process.Other based on the routing policy of historical information also owing to can not the cause of direct communication cannot be deployed in this scene between the limitation of scene and little group node.
Summary of the invention
Object of the present invention:
In order to headquarter and group's direct communication can be realized, based on the DTN routing policy directly under data courier under a kind of light-duty Ji Bu field operations trip scene avoiding the communication information to be proposed by all nodes sharing in light-duty Ji Bu field operations trip scene.
The technical solution adopted in the present invention:
The present invention proposes a kind of communication unit being applicable to applying in light-duty Ji Bu field operations trip scene, directly under data courier DDF(Dedicated Data Ferry) come information communication and the series connection task of whole squad.
Under this scene, headquarter can be compared to the brain of whole squad and information center, and all information of each group all will feed back to headquarter so that headquarter make further instruction, and the communication between group must via headquarter on behalf of completing.
A DDF should comprise following information:
1. route sequence RQ (Routing Queue)
Route sequence RQ represents the order that DDF carries out movement, is made up of the sequence number of transmission node, and first of route sequence and last position can only be source nodes.
2. transmission information sequence PIQ(Post Info Queue)
Transmission information sequence PIQ represents the information that DDF is transferred to each node, when DDF arrives a destination node, after data source being given the information transmission of this node, information can be eliminated from information sequence, therefore, directly under data courier DDF, strictly controlled by data source, other nodes outside data source can not carry out independent transmission request to DDF, data source is that it fills in complete routing table when DDF sends, the routing order that DDF provides in strict accordance with routing table moves, and finally turns back to data source.
Carry out according to following steps directly under data courier routing policy:
[1] initialization: headquarter are source node, comprise data source, more than one be communication node directly under transmission node and action group, these nodes meet: node keeps the geo-stationary to headquarter when taking action directly under data courier; The particular location of node is known by headquarter, controls directly under data courier, and data source imports when sending directly under data courier by headquarter, for filling in complete routing table and the data message of each node directly under data courier;
[2] each node is arrived directly under data courier, after data information transfer, delete the route of this node in the routing table and be transferred to the data message of this node, the routing order provided according to routing table directly under data courier moves, until transmission information sequence is cleared, other nodes outside data source can not carry out independent transmission request to directly under data courier;
[3] finally turn back to source node directly under data courier, wait for new transformation task.
Beneficial effect of the present invention:
DNT routing policy directly under data courier of the present invention, its transmitting procedure belongs to the DTN strategy of known routed path, has efficiency of transmission high, the feature that transmission disturbance is little, is applicable to some scientific researches being applied in communication environment extreme, in military operation.
Accompanying drawing explanation
Fig. 1 is based on the DTN routing policy figure directly under data courier.
Embodiment
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
In this scene, between all little group nodes, direct communication can not be carried out, and due to resource-constrained, the communication unit that command centre releases to ensure farthest return data source.As shown in Figure 1, we are headquarter, directly under transmission node and each action group abstract be communication node, these nodes are satisfied:
1. node 1 to 8 keeps the geo-stationary to headquarter when DDF takes action.
2. the particular location of node 1 to 8 is known by headquarter, and embodies in seeking in footpath of DDF.
Below, composition graphs 1 illustrates a kind of based on the DTN routing policy directly under data courier:
Step one: node CMD represents headquarter, node DDF represents the exponent data courier that headquarter data sources is released, node 1 to node 8 be distributed in S be the center of circle approximate circular arc on, initial route sequence is 1,3,5,7,8,0, and 0 represents headquarter.Transmission information sequence is m1, m3, m5, m7, m8.
Step 2: DDF arrives node 1 according to routing table, after transmitting data validation, deletes 1, delete m1, continue to move to node 3 from transmission information sequence from routing table to node 1.DDF arrives node 3,5,7,8 successively according to above-mentioned steps.Transfer data to node eight and confirm after, route sequence is: 0.Transmission information sequence is cleared.
Step 3: DDF returns headquarter CMD from node 8.Wait for new transformation task.
In real scene, DDF can be unmanned plane, robot, or even messenger.
Claims (3)
1. the DTN routing policy under a light-duty Ji Bu field operations trip scene, its difference is: node communication model comprises more than one directly under data courier with based on the delay-tolerant network DTN routing policy directly under data courier, one comprises route sequence and transmission information sequence directly under data courier, the order of movement is carried out in route sequence representative, be made up of the sequence number of transmission node, first of route sequence and last position are source nodes; Transmission information sequence comprises the information being transferred to each node; Carry out according to following steps directly under data courier routing policy:
[1] initialization: headquarter are source node, comprise data source, more than one be communication node directly under transmission node and action group, these nodes meet: node keeps the geo-stationary to headquarter when taking action directly under data courier; The particular location of node is known by headquarter, controls directly under data courier, and data source imports when sending directly under data courier by headquarter, for filling in complete routing table and the data message of each node directly under data courier;
[2] each node is arrived directly under data courier, after data information transfer, delete the route of this node in the routing table and be transferred to the data message of this node, the routing order provided according to routing table directly under data courier moves, until transmission information sequence is cleared, other nodes outside data source can not carry out independent transmission request to directly under data courier;
[3] finally turn back to source node directly under data courier, wait for new transformation task.
2., according to the DTN routing policy under the light-duty Ji Bu field operations trip scene described in claim 1, its difference is: source node is positioned at the center of other nodes, and other Node distribution are on the approximate circular arc taking source node as the center of circle.
3. according to the DTN routing policy under the light-duty Ji Bu field operations trip scene described in claim 1, its difference is: be unmanned plane, robot or messenger directly under data courier.
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| CN104158741A (en) * | 2014-09-09 | 2014-11-19 | 中国电子科技集团公司第五十四研究所 | Stratospheric active routing design method based on delay/disruption tolerant network |
| CN106506062B (en) * | 2016-11-29 | 2020-01-21 | 中山大学 | Distributed rapid communication system and communication method for cluster unmanned aerial vehicle |
| CN106792979A (en) * | 2016-12-07 | 2017-05-31 | 国网宁夏电力公司吴忠供电公司 | It is a kind of to set up the method that radio relay communication route communication link |
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| CN101286931A (en) * | 2008-05-27 | 2008-10-15 | 华中科技大学 | Optical network automatic discovery method and optical link constructing method based thereon |
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| CN101286931A (en) * | 2008-05-27 | 2008-10-15 | 华中科技大学 | Optical network automatic discovery method and optical link constructing method based thereon |
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| 《基于最近社交圈的社交时延容忍网络路由策略》;李千目;《计算机研究与发展》;20120615;第49卷(第6期);第1-11页 * |
| Khaled A. Harras.《Inter-regional messenger scheduling in delay tolerant mobile networks》.《World of Wireless, Mobile and Multimedia Networks》.2006,第1-11页. * |
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