CN107612665A - Data message repeating method and network transmission system - Google Patents
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- CN107612665A CN107612665A CN201711021964.4A CN201711021964A CN107612665A CN 107612665 A CN107612665 A CN 107612665A CN 201711021964 A CN201711021964 A CN 201711021964A CN 107612665 A CN107612665 A CN 107612665A
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Abstract
The present invention provides a kind of data message repeating method and network transmission system.Methods described is applied to network transmission system, and network transmission system includes at least one Preset Transfer path, and Preset Transfer path is communicated to connect formed successively by Centroid, at least one via node and destination node, and methods described includes：In Preset Transfer path, the upper node in two neighboring node issues data message and number of retransmissions to the next node in two neighboring node.Whether a upper nodal test needs to retransmit data message.When needing to retransmit, whether upper nodal test number of retransmissions is preset stopping number of retransmissions.When not being preset stopping number of retransmissions, a upper node carries out retransmission process.Thus, by setting number of retransmissions and preset stopping number of retransmissions, the transmission time of whole piece transmission path can be effectively controlled, improves efficiency of transmission, it is ageing with preferably transmitting.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of data message repeating method and network transmission system
System.
Background technology
MESH network (wireless mesh network) is multi-hop (multi-hop) network, by Ad-Hoc (ad hoc mode) network
Develop.Multihop network is by multiple nodes (such as combination of nodes mode of a Centroid+multiple ordinary nodes) group
Into multiple nodes can pass through forward data from each other.For example, the data message that Centroid issues can be along transmission
Path is transmitted successively from a node to another node, and until reaching final destination node, the destination node will can reply
Data message be inversely transmitted back to Centroid along the transmission path.
In the prior art, if some node in transmission path is sent when data message is transmitted into next node
Failure, data message can be retransmitted and give the next node by the node, untill sending successfully.The shortcomings that this retransmission scheme, exists
In each node allows unlimited number of re-transmission, can greatly reduce the efficiency of transmission of whole piece transmission path, also, ageing
Poor, uncontrollable Centroid waits the time delay replied, and expends the resource of Centroid.
The content of the invention
In order to overcome above-mentioned deficiency of the prior art, the present invention provides a kind of data message repeating method and network transmission
System, it can effectively control the number of retransmissions of whole piece transmission path, improve efficiency of transmission, ageing with preferably transmitting.
First purpose of present pre-ferred embodiments is to provide a kind of data message repeating method, applied to network transmission
System, the network transmission system include at least one Preset Transfer path, the Preset Transfer path by Centroid, at least
One via node and destination node communicate to connect composition successively, and methods described includes：
In Preset Transfer path, the upper node in two neighboring node issues data message and number of retransmissions to described
Next node in two neighboring node；
Whether a upper nodal test needs to retransmit the data message；
When needing to retransmit, whether number of retransmissions is preset stopping number of retransmissions described in a upper nodal test；
When not being preset stopping number of retransmissions, a upper node carries out retransmission process.
Second purpose of present pre-ferred embodiments is to provide a kind of network transmission system, the network transmission system bag
At least one Preset Transfer path is included, the Preset Transfer path is by Centroid, at least one via node and destination node
Communication connection composition successively, wherein：
In the Preset Transfer path, the upper node in two neighboring node, for issuing data message and re-transmission
The next node that number is given in the two neighboring node；
A upper node, it is additionally operable to detect whether to need to retransmit the data message；
When needing to retransmit, a upper node, it is additionally operable to detect whether the number of retransmissions is preset stopping re-transmission time
Number；
When not being preset stopping number of retransmissions, a upper node, it is additionally operable to carry out retransmission process.
In terms of existing technologies, the invention has the advantages that：
Present pre-ferred embodiments provide a kind of data message repeating method and network transmission system.Methods described is applied to
Network transmission system, the network transmission system include at least one Preset Transfer path, and the Preset Transfer path is by center
Node, at least one via node and destination node communicate to connect composition successively, and methods described includes：In Preset Transfer path
In, the upper node in two neighboring node issues data message and number of retransmissions to next section in the two neighboring node
Point.Whether a upper nodal test needs to retransmit the data message.When needing to retransmit, the upper node inspection
Survey whether the number of retransmissions is preset stopping number of retransmissions.When not being preset stopping number of retransmissions, a upper node enters
Row retransmission process.Thus, by setting number of retransmissions and preset stopping number of retransmissions, the biography of whole piece transmission path can effectively be controlled
The defeated time, efficiency of transmission is improved, it is ageing with preferably transmitting.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the connection diagram for the network transmission system that present pre-ferred embodiments provide.
Fig. 2 is one of step flow chart of data message repeating method that present pre-ferred embodiments provide.
Fig. 3 is the sub-step flow chart of the step S130 shown in Fig. 2 that present pre-ferred embodiments provide.
Fig. 4 is the sub-step flow chart of the step S150 shown in Fig. 2 that present pre-ferred embodiments provide.
Fig. 5 is the two of the step flow chart for the data message repeating method that present pre-ferred embodiments provide.
Fig. 6 is the three of the step flow chart for the data message repeating method that present pre-ferred embodiments provide.
Fig. 7 is the sub-step flow chart of the step S110 shown in Fig. 6 that present pre-ferred embodiments provide.
Icon：100- network transmission systems；110- Centroids；120- via nodes；130- destination nodes.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.Therefore, the reality of the invention to providing in the accompanying drawings below
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.In addition, term " the
One ", " second " etc. is only used for distinguishing description, and it is not intended that instruction or hint relative importance.
Present pre-ferred embodiments provide a kind of data message repeating method, and the data message repeating method is applied to net
Network Transmission system 100.
Fig. 1 is refer to, Fig. 1 is the connection diagram for the network transmission system 100 that present pre-ferred embodiments provide.
In the present embodiment, the network transmission system 100 include Centroid 110, at least one via node 120,
At least one destination node 130, and at least one Preset Transfer path, wherein, every Preset Transfer path is by Centroid
110th, at least one via node 120 and destination node 130 communicate to connect composition successively.
In the present embodiment, the Centroid 110 is the core node in Preset Transfer path, the via node 120
It is the transit node for carrying out data message forwarding, the destination node 130 is the final purpose in the Preset Transfer path
Node.The Centroid 110, via node 120, destination node 130 may be, but not limited to, server, router, PC,
Mobile device (such as smart mobile phone) etc..
The present embodiment provide certain Preset Transfer path in, the Centroid 110 by data message be handed down to
First adjacent via node 120 of the Centroid 110, first via node 120 by the data message along
The Preset Transfer path is transmitted to next node (next via node 120 or destination node 130), by that analogy, until
Final destination node 130 is reached, the destination node 130 carries out relevant treatment after receiving the data message, and will reply
Data message be inversely transmitted back to Centroid 110 along the Preset Transfer path.
In the present embodiment, the solid line between the node shown in Fig. 1 represents the Preset Transfer path of data information transfer.
The idiographic flow of the data message repeating method is described in detail below.
Refer to Fig. 2, Fig. 2 be the data message repeating method that present pre-ferred embodiments provide step flow chart it
One.Methods described includes：
Step S120, in the Preset Transfer path, the upper node in two neighboring node issue data message and
The next node that number of retransmissions is given in the two neighboring node.
In the present embodiment, a upper node refers to the side that communication is sent, and the next node refers to communications reception
A side.Data message is either issued by Centroid 110, or by destination node 130 returned it is applicable this
Concept.A upper node and next node be only used in two neighboring node make distinguish description, a upper node or under
One node can be any one in Centroid 110, via node 120 and destination node 130.
For example, it is assumed that certain Preset Transfer path by 110, two via nodes 120 of Centroid and destination node 130 according to
Secondary communication connection composition.When the Centroid 110 initially issues data message, upper one in two neighboring node now
Node refers to the Centroid 110, and the next node in two neighboring node refers to adjacent with the Centroid 110
One via node 120.
Whether step S130, a upper nodal test need to retransmit the data message.
Fig. 3 is refer to, Fig. 3 is the sub-step flow chart of the step S130 shown in Fig. 2 that present pre-ferred embodiments provide.
The step S130 includes sub-step S131, sub-step S132, sub-step S133 and sub-step S134.
Sub-step S131, a upper node are monitored the next node according to default listening period.
In the present embodiment, the default listening period is transmitted by a upper node according to two neighboring internodal data
Communication mode (such as carrier communication or radio communication) and transmission rate carry out calculating setting.And the two neighboring node
Between communication mode and transmission rate be determined by Centroid 110 and be handed down to a upper node.For example, it may be set to
1s, a upper node can monitor forwarding operation or back delivery operations of the next node to data message within this 1s time.
Sub-step S132, in the default listening period, whether a upper nodal test listens to next section
The forwarding operation of point or back delivery operations.
When not hearing, sub-step S133 is performed, a upper node judges to need to carry out the data message weight
Pass.
In the present embodiment, when not hearing, show that the data message may pass between the two neighboring node
Occurs bust this when defeated, i.e., described next node may not receive the data message that a upper node is sent.
When listening to, sub-step S134 is performed, judgement need not retransmit.
In the present embodiment, when listening to, data message transmission success between the two neighboring node is shown,
I.e. described next node receives the data message that a upper node is sent.
Referring once again to Fig. 2, methods described also includes：
Step S140, when needing to retransmit, whether number of retransmissions described in a upper nodal test is that preset stopping retransmits
Number.
In the present embodiment, the preset stopping number of retransmissions can be set according to the actual requirements, for example, may be configured as
0 time.
In the present embodiment, when needing to retransmit, if a upper nodal test is described default to the number of retransmissions
Stop number of retransmissions (such as 0 time), then show that the communication conditions in now Preset Transfer path are unstable, a upper node is not
The data message can be retransmitted again.Thus, node can be avoided to carry out unconfined re-transmission, effectively improve the default biography of whole piece
The efficiency of transmission in defeated path, have preferably ageing.
Step S150, when not being preset stopping number of retransmissions, a upper node carries out retransmission process.
Fig. 4 is refer to, Fig. 4 is the sub-step flow chart of the step S150 shown in Fig. 2 that present pre-ferred embodiments provide.
The step S150 includes sub-step S151 and sub-step S152.
Sub-step S151, a upper node are updated to the number of retransmissions.
In the present embodiment, when the number of retransmissions is not preset stopping number of retransmissions, a upper node can be to institute
State number of retransmissions to be updated, the mode that a upper node is updated can include, but are not limited to：By the number of retransmissions
Subtract 1.
For example, presently described number of retransmissions is 2, then show that a upper node can retransmit to the data message,
The number of retransmissions is subtracted 1 by a upper node, will the number of retransmissions be updated to 1.
Sub-step S152, a upper node retransmit the data message and number of retransmissions by renewal under described
One node.
In the present embodiment, a upper node by the data message and passes through the number of retransmissions (such as 1 time) updated
Retransmit to the next node.
In the present embodiment, if this time retransmitting successfully, and the next node also has follow-up adjacent node, then under described
Step S120, step S130, step S140 and the step S150 that one node is repeated in above-mentioned Fig. 2 carry out the forwarding of data message
And retransmit.Now, the next node is changed into the upper node in two neighboring node, the follow-up adjacent segments of the next node
Point is the next node in two neighboring node.
Refer to Fig. 5, Fig. 5 be the data message repeating method that present pre-ferred embodiments provide step flow chart it
Two.Methods described includes：
Step S160, presetting in the stand-by period, the data that the Centroid 110 returns to the destination node 130
The reception condition of information is detected.
In the present embodiment, the Centroid 110 detects whether to receive the mesh within the default stand-by period
Mark the data message that node 130 returns.Wherein, the default stand-by period carries out data message biography in the Centroid 110
Calculating setting can be carried out according to Preset Transfer path during defeated initial configuration.For example, the default wait obtained by calculating setting
Time is 30s, and data message is initially handed down in first adjacent with the Centroid 110 by the Centroid 110
When node 120, start timing, the Centroid 110 can detect whether to receive the target within 0-30s time
The data message that node 130 returns.
In the present embodiment, if within the default stand-by period, the Centroid 110 does not receive the data of passback
Information, then the Centroid 110 judge this data transmission fails on the Preset Transfer path, the Centroid
110 stop waiting the data message returned to carry out other processing data information operations.Thus, by setting Centroid
110 default stand-by period, can effectively control centre's node 110 wait duration, reduce due to waiting as long for centromere
Point 110 causes resource cost.
Refer to Fig. 6, Fig. 6 be the data message repeating method that present pre-ferred embodiments provide step flow chart it
Three.Methods described includes：
Step S110, the Centroid 110 carry out the initial configuration of data information transfer.
In the present embodiment, the initial configuration includes：Configure the initial number of retransmissions of Preset Transfer path, configuration and pre-
If stop number of retransmissions, setting default stand-by period and default listening period.
Fig. 7 is refer to, Fig. 7 is the sub-step flow chart of the step S110 shown in Fig. 6 that present pre-ferred embodiments provide.
The step S110 includes sub-step S111, step S112, step S113 and sub-step S114.
In the present embodiment, the Centroid 110 can use, but be not limited to, appointing in carrier communication and radio communication
A kind of or hybrid combining communication mode of anticipating carries out the transmission of data message by the Preset Transfer path and destination node 130
Interaction.
For example, there are three nodes on certain Preset Transfer path：a、b、c.Single communication side can be used between node a, b, c
Formula, i.e., communicated using the one of which in carrier communication and radio communication.Or node a, b, c are using the double of hybrid combining
Mould communication mode, such as, node a to node b uses carrier communication, and node b to node c uses radio communication.
Sub-step S111, each self-corresponding Preset Transfer road of at least one destination node 130 is arrived to the Centroid 110
Footpath is configured.
In the present embodiment, the Centroid 110 can be according to the communication mode between each node and communication conditions to institute
Centroid 110 is stated to be configured to each self-corresponding Preset Transfer path of at least one destination node 130.
Sub-step S112, the route characteristic in every Preset Transfer path is obtained, and it is pre- to every according to the route characteristic
If the preset stopping number of retransmissions and initial number of retransmissions of transmission path are configured.
In the present embodiment, when Preset Transfer path, which configures, completes, the Centroid 110 can be according to the default biography
The route characteristic in defeated path configures to the preset stopping number of retransmissions in the Preset Transfer path and initial number of retransmissions.
In the present embodiment, the route characteristic can include, but are not limited to：The via node number in Preset Transfer path,
The communication mode and transmission rate of each internodal data information transfer.Wherein, the Centroid 110 can be special according to the path
Any one or more combination that sign includes configures the initial number of retransmissions in Preset Transfer path.
Below in a manner of configuring initial number of retransmissions according to the nodes in Preset Transfer path exemplified by illustrate.
In a kind of embodiment that the present embodiment provides, the Centroid 110 can preset a nodes threshold
It is worth (such as 3), if the nodes on Preset Transfer path are more than the nodes threshold value, the Centroid 110 presets this
The initial number of retransmissions of transmission path is configured to first number (such as 2 times).If the nodes are not more than the nodes threshold
The initial number of retransmissions in the Preset Transfer path is configured to second number (such as 1 time) by value, the Centroid 110.
In the another embodiment that the present embodiment provides, the Centroid 110 also can be according to channel actual conditions
And demand configures initial number of retransmissions.For example, the nodes on certain Preset Transfer path are 4, the Preset Transfer path
Communication conditions are excellent, can be configured to the initial number of retransmissions in this Preset Transfer path 1 time.
Sub-step S113, standard and initial number of retransmissions are calculated according to preset time, the Centroid 110 is calculated and exists
The corresponding default stand-by period on every Preset Transfer path.
In the present embodiment, the preset time calculates standard and may be, but not limited to,：T=T+ (m × r).Wherein, t tables
Show the default stand-by period, T represent data message do not occur to retransmit in positive transmission on Preset Transfer path and reverse passback and
The Success criteria time of transmission success, m represent initial number of retransmissions, and r is represented on the Preset Transfer path between two nodes
The transmission most slow node most slow time.It is specifically described below by citing.
For example, there are three nodes on certain Preset Transfer path：Centroid a, via node b and destination node c, the transmission
The Success criteria time T=10s in path, the initial number of retransmissions of transmission path m=2 times, the node of the transmission path is most
Slow time r is via node b to destination node c transmission time, r=2s.Then the Centroid a's of the transmission path is default etc.
Treat time t=10+ (2 × 2)=14s.
In the present embodiment, the default stand-by period that the preset time calculating standard meter calculates assumes that initial re-transmission
Number retransmits between two most slow nodes are transmitted, i.e., when calculating the default wait that standard obtains by the preset time
Between the sufferable maximum latency on the Preset Transfer path of Centroid 110.
Sub-step S114, according to the communication mode and transmission rate of data information transfer, calculate every Preset Transfer path
In a upper node in two neighboring node monitor the default listening period of next node.
In the present embodiment, the Centroid 110 is believed two neighboring internodal data in every Preset Transfer path
The communication mode (such as carrier wave or wireless) and transmission rate for ceasing transmission are determined, and are correspondingly handed down in two adjacent sections point
A upper node so that a upper node can according to the communication mode and transmission rate of data information transfer calculate described upper one
Node monitors the default listening period of next node.
In summary, present pre-ferred embodiments provide a kind of data message repeating method and network transmission system.It is described
Method is applied to network transmission system, and the network transmission system includes at least one Preset Transfer path, the Preset Transfer
Path is communicated to connect formed successively by Centroid, at least one via node and destination node, and methods described includes：Default
In transmission path, the upper node in two neighboring node issues data message and number of retransmissions in the two neighboring node
Next node.Whether a upper nodal test needs to retransmit the data message.When need retransmit when, it is described on
Whether number of retransmissions described in one nodal test is preset stopping number of retransmissions.When not being preset stopping number of retransmissions, it is described on
One node carries out retransmission process.
Thus, by setting number of retransmissions and preset stopping number of retransmissions, the transmission of whole piece transmission path can effectively be controlled
Time, efficiency of transmission is improved, it is ageing with preferably transmitting.
Also, by setting the default stand-by period of Centroid, can effectively control centre's node wait duration, reduce
Resource cost is caused to Centroid due to waiting as long for.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. a kind of data message repeating method, applied to network transmission system, it is characterised in that the network transmission system includes
At least one Preset Transfer path, the Preset Transfer path by Centroid, at least one via node and destination node according to
Secondary communication connection composition, methods described include：
In Preset Transfer path, the upper node in two neighboring node issues data message and number of retransmissions to described adjacent
Next node in two nodes；
Whether a upper nodal test needs to retransmit the data message；
When needing to retransmit, whether number of retransmissions is preset stopping number of retransmissions described in a upper nodal test；
When not being preset stopping number of retransmissions, a upper node carries out retransmission process.
2. according to the method for claim 1, it is characterised in that whether a upper nodal test needs to believe the data
Breath is retransmitted, including：
A upper node is monitored the next node according to default listening period；
In the default listening period, a upper node does not hear forwarding operation or the back delivery operations of the next node
When, a upper node judges to need to retransmit the data message；
Conversely, then judge to retransmit.
3. according to the method for claim 2, it is characterised in that a upper node carries out retransmission process, including：
A upper node is updated to the number of retransmissions, wherein, the mode that a upper node is updated includes：Will
The number of retransmissions subtracts 1；
A upper node retransmits the data message and the number of retransmissions by updating to the next node.
4. according to the method described in claim 2-3 any one, it is characterised in that methods described also includes：
Within the default stand-by period, the reception condition for the data message that the Centroid returns to the destination node is examined
Survey.
5. according to the method for claim 4, it is characterised in that methods described also includes：
The Centroid carries out the initial configuration of data information transfer, wherein, the initial configuration includes：Configure Preset Transfer
The initial number of retransmissions of path, configuration and preset stopping number of retransmissions, setting default stand-by period and default listening period.
6. according to the method for claim 5, it is characterised in that the Centroid is using in carrier communication and radio communication
The communication mode of any one or hybrid combining pass through the biography that the Preset Transfer path carries out data message with destination node
Defeated interaction, the Centroid carry out the initial configuration of data information transfer, including：
The Centroid is configured to each self-corresponding Preset Transfer path of at least one destination node；
The route characteristic in every Preset Transfer path is obtained, and every Preset Transfer path is preset according to the route characteristic
Stop number of retransmissions and initial number of retransmissions is configured, wherein, the route characteristic includes：The relaying in Preset Transfer path
The communication mode and transmission rate of nodes, each internodal data information transfer；
Standard and initial number of retransmissions are calculated according to preset time, calculate the Centroid on every Preset Transfer path
The corresponding default stand-by period；
According to the communication mode and transmission rate of data information transfer, calculate in every Preset Transfer path in two neighboring node
A upper node monitor next node default listening period.
7. a kind of network transmission system, it is characterised in that the network transmission system includes at least one Preset Transfer path, institute
Preset Transfer path is stated to be communicated to connect formed successively by Centroid, at least one via node and destination node, wherein：
In the Preset Transfer path, the upper node in two neighboring node, for issuing data message and number of retransmissions
To the next node in the two neighboring node；
A upper node, it is additionally operable to detect whether to need to retransmit the data message；
When needing to retransmit, a upper node, it is additionally operable to detect whether the number of retransmissions is preset stopping number of retransmissions；
When not being preset stopping number of retransmissions, a upper node, it is additionally operable to carry out retransmission process.
8. system according to claim 7, it is characterised in that whether a upper nodal test needs to believe the data
Ceasing the mode retransmitted includes：
A upper node is monitored the next node according to default listening period；
In the default listening period, a upper node does not hear forwarding operation or the back delivery operations of the next node
When, a upper node judges to need to retransmit the data message；
Conversely, then judge to retransmit.
9. system according to claim 8, it is characterised in that：
Within the default stand-by period, the Centroid, for the reception condition of the data message returned to the destination node
Detected.
10. system according to claim 9, it is characterised in that：
The Centroid, it is additionally operable to carry out the initial configuration of data information transfer, wherein, the initial configuration includes：Configuration
The initial number of retransmissions of Preset Transfer path, configuration and preset stopping number of retransmissions, setting default stand-by period and default monitoring
Time.
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