CN107864513A - Multiple access method, node and storage medium - Google Patents
Multiple access method, node and storage medium Download PDFInfo
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- CN107864513A CN107864513A CN201711081877.8A CN201711081877A CN107864513A CN 107864513 A CN107864513 A CN 107864513A CN 201711081877 A CN201711081877 A CN 201711081877A CN 107864513 A CN107864513 A CN 107864513A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control 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 invention discloses a kind of multiple access method,Node and storage medium,The present invention obtains current network load by first node,Target superframe is set dynamically according to the current network load,Target time section is divided according to the target superframe,Obtain time slot corresponding to each frame in the target superframe,The first kind time slot of acquisition first node occupies information and the second class time slot of section point occupies information,Information is occupied according to the first kind time slot and the second class time slot occupies information and obtains free timeslot from each time slot,Target time slot is chosen from the free timeslot,Data to be sent are sent in the target time slot,Each node is operated under the clock of oneself,Need not rely on the whole network synchronization,Avoid signaling or the problem of agreement excessively causes efficiency of transmission low,Improve the speed and efficiency of data transfer,Save the time for sending data,Make network control simpler,And make network more healthy and stronger.
Description
Technical field
The present invention relates to time division multiple acess MANET communication field, more particularly to a kind of multiple access method, node and storage
Medium.
Background technology
The multi-hop autonomous system that self-organizing network is made up of several mobile terminals, self-organizing network is by several nodes
Form, each node is operated under the timing of oneself, i.e., the superframe boundaries of each node, frame boundaries, boundary of time slot is can not
With, it is asynchronous, for self-organizing network without base station, each node is both that terminal can be wireless access points again
(Wireless Access Point, AP) or router.Flexible networking performance makes it in military, emergency communication neck
Domain has a wide range of applications.Multi-access mode of the wireless self-organization network generally use based on contention access, or based on when
Divide, the multi-access mode of frequency division, code division.Without the whole network time synchronized, node needs to need elder generation when launching data contention access mode
Monitoring wireless channel and then competition obtain wireless channel.But more with the change of nodes, competition wireless channel collides general
Rate can be increasing, and wireless channel can really be reduced for the time of data transfer, and spectrum efficiency reduces.Multiple access based on the time-division
Radio frames are divided into several time slots, each one transmission time slot of node distribution, transmission time slot of each node at oneself by mode
Middle transmission data.Frequency division multiple access access then then distributes different spreading codes for the different frequency of different node distributions, CDMA.Nothing
By being time-division or frequency division, code division, for bursty data, the mode of this predistribution running time-frequency resource can all cause response speed
The problems such as degree is inadequate, and the running time-frequency resource of distribution wastes.So further propose dynamic time division access (Dynamic Time
Division Multiple Access, DTDMA), time slot distribution is no longer fixed, but by applying, distributing, using
Process dynamics use time slot.But it is big that this mode of dynamic time division access equally exists signaling consumption, bursty data efficiency is sent not
The problem of high；
Have in the prior art by the access mode under two kinds of topologys, the CDMA/FDMA based on cross link network
Combine multiple access, each channel one of node distribution one spreading code；Or the hierarchical technology multiple access based on tree-shaped topology network, adopt
With Two Binomial Tree Model, the access of dual-frequency point CDMA；Or under self-organizing network when multiple receiving nodes are to a transmitting node
The method of gap alignment；Or frame is divided into it is descending, it is up, descending three sections, Centroid according to uplink feedback come allocation of downlink when
Gap；Because sequential have little time distribution in the 3rd section of descending middle transmitting；Or access phase uses CSMA, neighbors row are only obtained
Table, Selection Center node after neighbortable is stable, Centroid enter the TDMA stages after distributing time slot, what CSMA, TDMA were combined
Multiple access method；
But for a unstable system, handshake is more few better, the content of predistribution is more few better,
Signalling exchange complexity all be present, particularly in the self-organizing network system formed in face of many mobile nodes in existing multi-address method
Sub-clustering, the agreement of layering are excessive, rely on the shortcomings that the whole network is synchronous, and efficiency of transmission is low.
The content of the invention
It is a primary object of the present invention to a kind of multiple access method, node and storage medium, it is intended to solve prior art
In exist because Signalling exchange is complicated when facing self-organizing network system, it is synchronous to rely on the whole network, causes the technical problem that efficiency of transmission is low.
To achieve the above object, the present invention provides a kind of multiple access method, and the multiple access method includes following step
Suddenly：
First node obtains current network load, and target superframe is set dynamically according to the current network load；
Target time section is divided according to the target superframe, when obtaining in the target superframe corresponding to each frame
Gap；
The first kind time slot of acquisition first node occupies information and the second class time slot of section point occupies information, according to institute
State that first kind time slot occupies information and the second class time slot occupies information and free timeslot, the first segment are obtained from each time slot
Point is asynchronous with the clock of the section point；
Target time slot is chosen from the free timeslot, data to be sent are sent in the target time slot.
Preferably, the first kind time slot for obtaining first node occupies information and the second class time slot of section point occupies
Information, information is occupied according to the first kind time slot and when the second class time slot occupies information and obtains idle from each time slot
Gap, specifically include：
The first kind time slot is obtained from the first message of the first node and occupies information, or is saved from described second
The second class time slot, which is obtained, in second message of point occupies information, wherein, when first message is according to the first kind
Gap occupies the message of information determination, and second message is the section point according to first message and first message
Positional information determine message, the positional information be the section point receive first message original position and
The information of end position.
Preferably, the first kind time slot is obtained in first message from the first node and occupies information, or
The second class time slot is obtained from the second message of the section point and occupies information, is specifically included：
The time slot according to corresponding to time order and function order by each frame in the target superframe be divided into before to time slot and it is backward when
Gap, the first kind time slot is obtained from the first message of the first node by the forward direction time slot and the backward time slot
Information is occupied, or obtains the second class time slot from the second message of the section point and occupies information.
Preferably, it is described to choose target time slot from the free timeslot, by data to be sent in the target time slot
After transmission, the multiple access method also includes：
Pass through the error rate for data to be sent described in symbol acquisition of information of being read really in the backward time slot；
The target time slot is changed when the error rate exceedes predetermined threshold value, new mesh is chosen from the free timeslot
Timestamp gap, the data to be sent are sent in the new target time slot.
Preferably, the packet to be sent contains multiple packets；
Correspondingly, it is described to choose target time slot from the free timeslot, by data to be sent in the target time slot
Send, specifically include：
Obtain priority corresponding to each packet and channel quality service ginseng in predetermined threshold value and the data to be sent
Number；
The default of each packet is determined according to the predetermined threshold value, the priority and the channel quality service parameter
Transmission condition, the target time slot is chosen from the free timeslot according to the default transmission condition；
The repetition period of the target time slot is obtained, when the repetition period being more than first threshold, each packet is existed
Sent in quasistatic time slot, the quasistatic time slot is the time slot persistently sent with the repetition period；When the repetition period
During less than the first threshold, each packet is sent in Burst slot, the Burst slot is to be sent out with the repetition period
Send time slot once.
Preferably, it is described to be determined respectively according to the predetermined threshold value, the priority and the channel quality service parameter
The default transmission condition of packet, the target time slot is chosen from the free timeslot according to the default transmission condition, had
Body includes：
The total quantity of the free timeslot is compared with the predetermined threshold value, obtains comparison result；
The corresponding channel quality service parameter and the priority are distinguished according to the first node and all mid-side nodes,
And the comparison result determines the default transmission condition of each packet；
The target time slot is chosen from the free timeslot according to the default transmission condition.
Preferably, it is described according to the first node and all mid-side nodes respectively the corresponding channel quality service parameter and
The priority, and the comparison result determine the default transmission condition of each packet, specifically include：
Compare the channel quality corresponding with all mid-side node of channel quality service parameter corresponding to the first node to take
Business parameter；
When the comparison result is that the free timeslot total quantity is more than or equal to the predetermined threshold value, if described the
High priority packets channel quality service parameter corresponding to one node is less than high-priority data corresponding to all mid-side nodes
Bag channel quality service parameter, then the default transmission condition is the high priority packets for allowing to launch the first node；
When the comparison result is that the free timeslot total quantity is less than the predetermined threshold value, if the first node
Corresponding lower-priority data bag channel quality service parameter is higher than lower-priority data bag channel corresponding to all mid-side nodes
Quality services parameter, then the default transmission condition is to forbid launching the lower-priority data bag of the first node.
Preferably, the first node obtains current network load, and target is set dynamically according to the current network load
Superframe, specifically include：
Current network load is obtained, data packet number to be sent is obtained according to the current network load；
The size of the target superframe is determined according to the current network load, according to determining the data packet number
The transmitting repetition period of target superframe, the target is set to surpass according to the target superframe size and the transmitting repetition period
Frame.
In addition, to achieve the above object, the present invention also proposes a kind of node, and the node includes：Memory, processor and
The multiple access joining procedure that can be run on the memory and on the processor is stored in, the multiple access joining procedure is configured to
The step of realizing multiple access method as described above.
In addition, to achieve the above object, the present invention also proposes a kind of storage medium, and multiple access is stored with the storage medium
Joining procedure, the step of multiple access method as described above is realized when the multiple access joining procedure is executed by processor.
Multiple access method proposed by the present invention, the present invention obtains current network load by first node, according to described
Target superframe is set dynamically in current network load, and target time section is divided according to the target superframe, obtains the mesh
Time slot corresponding to each frame in superframe is marked, the first kind time slot for obtaining first node occupies the second class time slot of information and section point
Information is occupied, information is occupied according to the first kind time slot and the second class time slot occupies information and the free time is obtained from each time slot
Time slot, the first node is asynchronous with the clock of the section point, and target time slot is chosen from the free timeslot, will treat
Send data to send in the target time slot, each node is operated under the clock of oneself, it is not necessary to rely on the whole network synchronization, avoid
The problem of signaling or agreement excessively cause efficiency of transmission low, at one's leisure gap send data, improve the speed of data transfer
And efficiency, the time for sending data is saved, makes network control simpler, and make network more healthy and stronger.
Brief description of the drawings
Fig. 1 is the node structure schematic diagram for the hardware running environment that scheme of the embodiment of the present invention is related to；
Fig. 2 is the schematic flow sheet of multiple access method first embodiment of the present invention；
Fig. 3 is three Nodes Self-organized network diagrams in multiple access method of the present invention；
Fig. 4 is the schematic flow sheet of multiple access method second embodiment of the present invention；
Fig. 5 is that busy time slot monitors schematic diagram in multiple access method of the present invention；
Fig. 6 is the schematic flow sheet of multiple access method 3rd embodiment of the present invention；
Fig. 7 is quasistatic time slot and Burst slot schematic diagram in multiple access method of the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The solution of the embodiment of the present invention is mainly：The present invention obtains current network load by first node, according to
Target superframe is set dynamically in the current network load, and target time section is divided according to the target superframe, obtains institute
Time slot corresponding to each frame in target superframe is stated, the first kind time slot for obtaining first node occupies information and the second class of section point
Time slot occupies information, occupies information according to the first kind time slot and the second class time slot occupies information and obtained from each time slot
Free timeslot, the first node is asynchronous with the clock of the section point, and target time slot is chosen from the free timeslot,
Data to be sent are sent in the target time slot, each node is operated under the clock of oneself, it is not necessary to the whole network synchronization is relied on,
Avoid signaling or the problem of agreement excessively causes efficiency of transmission low, gap sends data at one's leisure, improves data transfer
Speed and efficiency, the time for sending data is saved, make network control simpler, and make network more healthy and stronger, solved
Face during self-organizing network system to exist because Signalling exchange is complicated in the prior art, rely on the whole network synchronization, cause efficiency of transmission low
Technical problem.
Reference picture 1, Fig. 1 are the node structure schematic diagram for the hardware running environment that scheme of the embodiment of the present invention is related to.
As shown in figure 1, the node can include：Processor 1001, such as CPU, communication bus 1002, user's end interface
1003, network interface 1004, memory 1005.Wherein, communication bus 1002 is used to realize the connection communication between these components.
User's end interface 1003 can include display screen (Display), input block such as keyboard (Keyboard), optional user's termination
Mouth 1003 can also include wireline interface, the wave point of standard.Network interface 1004 can optionally include the wired of standard
Interface, wave point (such as WI-FI interfaces).Memory 1005 can be high-speed RAM memory or stable memory
(non-volatile memory), such as magnetic disk storage.Memory 1005 optionally can also be independently of aforementioned processor
1001 storage device.
, can be with it will be understood by those skilled in the art that the node structure shown in Fig. 1 does not form the restriction to the node
Including than illustrating more or less parts, either combining some parts or different parts arrangement.
As shown in figure 1, it can lead to as in a kind of memory 1005 of computer-readable storage medium including operating system, network
Believe module, user terminal interface module and multiple access joining procedure.
Node of the present invention calls the multiple access joining procedure stored in memory 1005 by processor 1001, and performs following
Operation：
First node obtains current network load, and target superframe is set dynamically according to the current network load；
Target time section is divided according to the target superframe, when obtaining in the target superframe corresponding to each frame
Gap；
The first kind time slot of acquisition first node occupies information and the second class time slot of section point occupies information, according to institute
State that first kind time slot occupies information and the second class time slot occupies information and free timeslot, the first segment are obtained from each time slot
Point is asynchronous with the clock of the section point；
Target time slot is chosen from the free timeslot, data to be sent are sent in the target time slot.
Further, processor 1001 can call the multiple access joining procedure stored in memory 1005, also perform following
Operation：
The first kind time slot is obtained from the first message of the first node and occupies information, or is saved from described second
The second class time slot, which is obtained, in second message of point occupies information, wherein, when first message is according to the first kind
Gap occupies the message of information determination, and second message is the section point according to first message and first message
Positional information determine message, the positional information be the section point receive first message original position and
The information of end position.
Further, processor 1001 can call the multiple access joining procedure stored in memory 1005, also perform following
Operation：
The time slot according to corresponding to time order and function order by each frame in the target superframe be divided into before to time slot and it is backward when
Gap, the first kind time slot is obtained from the first message of the first node by the forward direction time slot and the backward time slot
Information is occupied, or obtains the second class time slot from the second message of the section point and occupies information.
Further, processor 1001 can call the multiple access joining procedure stored in memory 1005, also perform following
Operation：
Pass through the error rate for data to be sent described in symbol acquisition of information of being read really in the backward time slot；
The target time slot is changed when the error rate exceedes predetermined threshold value, new mesh is chosen from the free timeslot
Timestamp gap, the data to be sent are sent in the new target time slot.
Further, processor 1001 can call the multiple access joining procedure stored in memory 1005, also perform following
Operation：
Obtain priority corresponding to each packet and channel quality service ginseng in predetermined threshold value and the data to be sent
Number；
The default of each packet is determined according to the predetermined threshold value, the priority and the channel quality service parameter
Transmission condition, the target time slot is chosen from the free timeslot according to the default transmission condition；
The repetition period of the target time slot is obtained, when the repetition period being more than first threshold, each packet is existed
Sent in quasistatic time slot, the quasistatic time slot is the time slot persistently sent with the repetition period；When the repetition period
During less than the first threshold, each packet is sent in Burst slot, the Burst slot is to be sent out with the repetition period
Send time slot once.
Further, processor 1001 can call the multiple access joining procedure stored in memory 1005, also perform following
Operation：
The total quantity of the free timeslot is compared with the predetermined threshold value, obtains comparison result；
The corresponding channel quality service parameter and the priority are distinguished according to the first node and all mid-side nodes,
And the comparison result determines the default transmission condition of each packet；
The target time slot is chosen from the free timeslot according to the default transmission condition.
Further, processor 1001 can call the multiple access joining procedure stored in memory 1005, also perform following
Operation：
Compare the channel quality corresponding with all mid-side node of channel quality service parameter corresponding to the first node to take
Business parameter；
When the comparison result is that the free timeslot total quantity is more than or equal to the predetermined threshold value, if described the
High priority packets channel quality service parameter corresponding to one node is less than high-priority data corresponding to all mid-side nodes
Bag channel quality service parameter, then the default transmission condition is the high priority packets for allowing to launch the first node；
When the comparison result is that the free timeslot total quantity is less than the predetermined threshold value, if the first node
Corresponding lower-priority data bag channel quality service parameter is higher than lower-priority data bag channel corresponding to all mid-side nodes
Quality services parameter, then the default transmission condition is to forbid launching the lower-priority data bag of the first node.
Further, processor 1001 can call the multiple access joining procedure stored in memory 1005, also perform following
Operation：
Current network load is obtained, data packet number to be sent is obtained according to the current network load；
The size of the target superframe is determined according to the current network load, according to determining the data packet number
The transmitting repetition period of target superframe, the target is set to surpass according to the target superframe size and the transmitting repetition period
Frame.
The present embodiment is obtained current network load by first node, born according to the current network by such scheme
Dynamic setting target superframe is carried, target time section is divided according to the target superframe, is obtained each in the target superframe
Time slot corresponding to frame, the first kind time slot for obtaining first node occupy information and the second class time slot of section point occupies information,
Information is occupied according to the first kind time slot and the second class time slot occupies information and obtains free timeslot from each time slot, it is described
First node is asynchronous with the clock of the section point, and target time slot is chosen from the free timeslot, by data to be sent
Sent in the target time slot, each node is operated under the clock of oneself, it is not necessary to rely on the whole network synchronization, avoid signaling or
The problem of agreement excessively causes efficiency of transmission low, gap transmission data, improve the speed and efficiency of data transfer, save at one's leisure
The time for sending data has been saved, has made network control simpler, and make network more healthy and stronger.
Based on above-mentioned hardware configuration, multiple access method embodiment of the present invention is proposed.
Reference picture 2, Fig. 2 are the schematic flow sheet of multiple access method first embodiment of the present invention.
In the first embodiment, the multiple access method comprises the following steps：
Step S10, first node obtains current network load, and target, which is set dynamically, according to the current network load surpasses
Frame；
It should be noted that the first node is the node in self-organizing network, the self-organizing network is several
The multi-hop autonomous system of mobile terminal composition, self-organizing network are made up of several nodes, and each node is operated in determining for oneself
At present, i.e., the superframe boundaries of each node, frame boundaries, boundary of time slot can be different, are asynchronous, self-organizing network need not
Base station, the first node can be terminal or wireless access points (Wireless Access Point, AP),
Router is can also be, can also be other network access devices such as work station, personal computer, server and printing certainly
Machine etc., the present embodiment is not any limitation as to this.
It should be appreciated that the current network load is the loading condition of current network, different network load conditions
Corresponding different network size, in order to adapt to different network sizes, it is necessary to which target superframe is set dynamically, can set target to surpass
The target superframe size of frame and transmission repetition period, transmission time slot can be that every frame is all launched, or every the transmitting of several frames once,
The maximum transmission repetition period of transmission time slot is superframe, i.e., every superframe transmitting once；
Further, the step S10 is specifically included：
Current network load is obtained, data packet number to be sent is obtained according to the current network load；
The size of the target superframe is determined according to the current network load, according to determining the data packet number
The transmitting repetition period of target superframe, the target is set to surpass according to the target superframe size and the transmitting repetition period
Frame.
It should be noted that when network size is smaller, i.e., when described current network load is smaller, packet to be sent
Few, nodes are few, and superframe includes less frame, and the transmission repetition period of transmission time slot is short, and time delay is short；When network size is larger
When, i.e., when described current network load is larger, packet to be sent is more, and nodes are more, and superframe includes more frame, priority
High packet can be launched with the shorter transmission repetition period, and the low packet of priority can repeat week with longer transmission
Phase launches.
It should be appreciated that the size of the target superframe is determined according to the current network load, according to the data
Bag quantity determines the transmitting repetition period of the target superframe, because the current network load can constantly change, to adapt to
Different network loads, in time can dynamically neatly by adjusting the target superframe size and the transmitting repetition period
The target superframe is set.
Step S20, target time section is divided according to the target superframe, obtains each frame pair in the target superframe
The time slot answered；
It is understood that the target superframe be according to the current network load be set dynamically superframe, for pair
Time shaft is divided, i.e., target time section is divided, and a target superframe includes several frames, when a frame includes some
Gap, a time slot are node transmitting or the minimum unit for receiving data, and the first node is according to target superframe to the object time
Duan Jinhang is divided, i.e., the target time section is divided into multiple fragments in units of superframe according to the size of target superframe,
The target time section is to need to carry out data transmission the period of task, and the target time section can be according to data transfer
Task period set in advance or according to the current network scale period set in advance, it can also be according to looking into
The period for meeting the period of present data transmission situation as data transfer task is looked for, can also be certainly by its other party
The period that formula determines is not any limitation as the target time section, the present embodiment to this.
It should be appreciated that the first node divides according to target superframe to target time section, the mesh is obtained
Mark time slot corresponding to each frame in superframe, that is, obtain occupied by the first node oneself of first node broadcast when
Gap, i.e., the time slot that described first node occupies in itself, flexibly it can be entered by the target superframe according to current network scale
The corresponding adjustment of row, the duration of time slot is set to avoid the time fragmentation of transmission time slot from causing asking for time waste with change
Topic.
Step S30, the first kind time slot of acquisition first node occupies information and the second class time slot of section point occupies letter
Breath, information is occupied according to the first kind time slot and the second class time slot occupies information and obtains free timeslot from each time slot,
The first node is asynchronous with the clock of the section point；
It should be noted that the section point is distinguishes the node of the first node, the first node and described
Section point is present in self-organizing network, and the first node is asynchronous with the clock of the section point, second section
Point is used to distinguish the first node, and the self-organizing network can also be including except the first node and described second certainly
Other nodes outside node, the present embodiment are not any limitation as to this；The self-organizing network forms for several mobile terminals
Multi-hop autonomous system, self-organizing network is made up of several nodes, and each node is operated under the timing of oneself, i.e., each section
The superframe boundaries of point, frame boundaries, boundary of time slot can be different, are asynchronous, and self-organizing network is without base station, and described first
Node can be terminal or wireless access points, can also be router, can also be other network connections certainly
Such as work station, personal computer, server and printer, the present embodiment is not any limitation as equipment to this.
It is understood that the first node can count to the time slot occupancy of periphery transmission channel, can
To be counted including the occupancy time slot statistics to continuous transmission link and the time slot that occupies of burst transfer link, by being passed to periphery
The time slot occupancy of defeated channel, which carries out statistics, can generate that the first kind time slot occupies information and the second class time slot accounts for
It is believed that breath, the first kind time slot occupies information and the second class time slot occupies information and is used to show that the time slot of present node accounts for
According to situation and listen to periphery node slot time occupancy.
It should be appreciated that after the second class time slot for obtaining the section point occupies information, can be according to described second
Class time slot occupies the current time slots occupancy that information determines the section point, with reference to the first kind time slot of the first node
Occupy information to be labeled each time slot, determine which time slot is free timeslot in each time slot, can be will be partially occupied or
The time slot all occupied is labeled as busy time slot, and the time slot not being occupied is labeled as into free timeslot, can also be logical certainly
Cross that other modes occupy information according to the first kind time slot and the second class time slot occupies information and sky is obtained from each time slot
Idle gap, the present embodiment are not any limitation as to this.
Step S40, target time slot is chosen from the free timeslot, data to be sent is sent out in the target time slot
Send.
It should be noted that the data that the data to be sent are transmitted for needs, by the data distribution to be sent
It is transmitted in different time slots, target time slot is chosen from the free timeslot, i.e., when there are data to need to send, from institute
State and time slot is selected in free timeslot be transmitted, the data to be sent are usually split as multiple packets or more numbers
According to fragment, the transmission of each self-corresponding time slot completion data is picked out for each packet.
Correspondingly, the first node and the section point are all the node in self-organizing network, the first node
With the clock of the section point and differing, Fig. 3 is three Nodes Self-organized network diagrams in multiple access method of the present invention,
The self-organizing network that a kind of three node as shown in Figure 3 is formed, it is five time slots to make Z points of a frame, node J1, node J2 and node
The original position of J3 frame head is different from, it is assumed that node J1, node J2 and the arrangement of node J3 chain types, node J1 and node J3 are mutual
Invisible, because node J1 and J2 boundary of time slot do not line up, the transmission signal of node 1 falls the in the division of node J2 time slots
First, two time slots, so first and second time slot is labeled as busy time slot by node J2, when then node J2 occupies the 3rd
Gap after node J3 receives node J2 broadcast singal, passes through the original position t of broadcast singal as the transmission time slot of oneself
Node J2 boundary of time slot is just obtained, and knows that first and second time slot is occupied from broadcast, node J3 is according to node
J2 boundary of time slot, calculate that first to fourth time slot is all occupied in egress J3 oneself time slot division, if node J3
There are data to need just use the 5th time slot if launching；Although the frame boundaries and boundary of time slot between node are not line up
, but from time shaft the launch time of three nodes be no overlapping, i.e. time division multiple acess, asynchronous time division multiple access (Time
Division Multiple Address, TDMA) the shortcomings that be that the centre of transmission time slot can cause time fragmentation, formed
Less than the time fragment of transmission time slot length, these fragments are not used to data transmitting, cause the waste of launch time, in Fig. 3
T be time that transmitting wastes, still, as time-slot duration is shorter and shorter, these fragments also can be shorter and shorter, final hair
The time T for penetrating waste can be shorter and shorter, and limits within the acceptable range, due to sending number to be sent in gap at one's leisure
According to, it is synchronous without relying on the whole network, network control can be made simpler, and network environment is more healthy and stronger.
The present embodiment is obtained current network load by first node, born according to the current network by such scheme
Dynamic setting target superframe is carried, target time section is divided according to the target superframe, is obtained each in the target superframe
Time slot corresponding to frame, the first kind time slot for obtaining first node occupy information and the second class time slot of section point occupies information,
Information is occupied according to the first kind time slot and the second class time slot occupies information and obtains free timeslot from each time slot, it is described
First node is asynchronous with the clock of the section point, and target time slot is chosen from the free timeslot, by data to be sent
Sent in the target time slot, each node is operated under the clock of oneself, it is not necessary to rely on the whole network synchronization, avoid signaling or
The problem of agreement excessively causes efficiency of transmission low, gap transmission data, improve the speed and efficiency of data transfer, save at one's leisure
The time for sending data has been saved, has made network control simpler, and make network more healthy and stronger.
Further, Fig. 4 is the schematic flow sheet of multiple access method second embodiment of the present invention, as shown in figure 4, being based on
First embodiment proposes multiple access method second embodiment of the present invention, in the present embodiment, described before the step S30
Multiple access method is further comprising the steps of：
Step S301, the first kind time slot is obtained from the first message of the first node and occupies information, Huo Zhecong
The second class time slot is obtained in second message of the section point and occupies information；
It should be noted that first message is the message that information determination is occupied according to the first kind time slot, it is described
Second message is the message that the section point determines according to the positional information of first message and first message, described
Positional information is comprising the original position of occupied time slot and the information of end position in the first node；Described in generation
The message can be sent by way of broadcast to the section point after first message, can be by way of broadcast to
All mid-side nodes are broadcasted or broadcasted by way of broadcast to the node of orientation, naturally it is also possible to are to pass through
Other modes send message to other nodes, the present embodiment and this are not any limitation as.
Correspondingly, the step S301 is specifically included：
The time slot according to corresponding to time order and function order by each frame in the target superframe be divided into before to time slot and it is backward when
Gap, the first kind time slot is obtained from the first message of the first node by the forward direction time slot and the backward time slot
Information is occupied, or obtains the second class time slot from the second message of the section point and occupies information.
It should be appreciated that described in time slot corresponding to each frame can be further divided into from the time in the target superframe
Forward direction time slot and the backward time slot, the forward direction time slot occupy information for transmitting the first kind time slot, also for biography
Transmission of data and first node transmission signaling, the backward time slot are used for transmitting feedback information, and the feedback information includes validating that word
Accord with (Acknowledgement, ACK) information or negative acknowledge character (Negative Acknowledgment, NACK) information, channel
Transmission quality information, the second class time slot occupy information and section point transmission signaling, can also include other kinds of letter certainly
Breath, the present embodiment are not any limitation as to this, and second message occupies information, the confirmation character including the second class time slot
Information and the information of channel transmission quality information generation, the second class time slot occupy information and forwarded for the section point
The first kind time slot of the first node occupies the information of information, and occupying information by obtaining the second class time slot obtains
The first kind time slot occupies information.
It should be appreciated that when the first node to the link between the section point is multi-hop transmission, with list
Jump set is defeated to be compared, and feedback content is different, and difference is, if multi-hop transmission intermediate node except to feed back current chain
Road read really symbol or negative acknowledge character outside, it is also necessary to feed back whole piece link read really symbol or negative acknowledge character, that is, need to confirm
Whether the section point correctly feeds back to the first node by feedback content.
It is understood that occupying information by the first kind time slot and the second class time slot occupies information and can obtained
The time slot occupancy of current ink is taken, by obtaining institute in the first message for being carried from the forward direction time slot of the first node
State first kind time slot and occupy and described is obtained in information, or the second message carried from the backward time slot of the section point
A kind of time slot occupies information and monitors the time slot occupancy of all mid-side nodes, the problem of can solve the problem that concealed nodes, and Fig. 5 is this hair
Busy time slot monitors schematic diagram in bright multiple access method, as shown in figure 5, dotted line frame is a jump scope of node 1, solid line arrow
Head is forward link, and dotted arrow is reverse link, and node 1 listens to node 3 and launches data, occupies time slot ST1, node 1 is supervised
Hear that node 6 receives data, occupy time slot ST2, in addition, node 7 has data to be sent to node 2, because need not feed back,
There is no reverse link, still, the Time Slot Occupancy situation that still meeting cycle overseas broadcast oneself listens to of node 2.So node 1
Also know that time slot 3 is occupied, three cases above allows node 1 to know the time slot occupancy of periphery transmission channel.
Further, after the step S40, the multiple access method is further comprising the steps of：
Step S50, the error rate for data to be sent described in symbol acquisition of information of being read really in the backward time slot is passed through；
Step S60, the target time slot is changed when the error rate exceedes predetermined threshold value, is selected from the free timeslot
New target time slot is taken, the data to be sent are sent in the new target time slot.
It should be noted that the predetermined threshold value is an error rate fiducial value set in advance, can be technical staff
The value confirmed by largely training with experimental data or the value voluntarily drafted according to routine work experience, the present embodiment
This is not any limitation as, the error rate is the probability that the data to be sent produce mistake in transmitting procedure, by described
Confirmation character information in backward time slot can obtain the error rate of the data to be sent, when the error rate exceedes default threshold
During value, that is, show that current target time slot can not meet transmission requirement, do not reach transmission conditions, it is necessary to be changed, this
When new target time slot is chosen from the free timeslot, the data to be sent are sent in the new target time slot.
The present embodiment by such scheme, by according to time order and function order by each frame in the target superframe corresponding to when
Gap is divided into the forward direction time slot and the backward time slot, and the forward direction time slot occupies letter for transmitting the first kind time slot
Breath, the backward time slot are used for transmitting feedback information, obtained in the first message carried from the forward direction time slot of the first node
Take the first kind time slot to occupy in information, or the second message carried from the backward time slot of the section point and obtain institute
State first kind time slot and occupy information, pass through the mistake for data to be sent described in symbol acquisition of information of being read really in the backward time slot
Rate, the target time slot is changed when the error rate exceedes predetermined threshold value, when new target is chosen from the free timeslot
Gap, the data to be sent are sent in the new target time slot, each node is operated under the clock of oneself, it is not necessary to according to
Rely the whole network synchronous, signaling is avoided or the problem of agreement excessively causes efficiency of transmission low, by preceding to time slot and backward time slot energy
The time slot occupancy of enough quick obtaining current inks, the error rate of the data to be sent is obtained by backward time slot, can
The transmission situation of monitoring current time slots in real time, when the target time slot is unsatisfactory for the transmission requirement of current network load, in time
Replacing time slot is carried out, further improves the speed and efficiency of data transfer, the time for sending data is saved, makes network control
It is simpler, and make network more healthy and stronger.
Further, Fig. 6 is the schematic flow sheet of multiple access method 3rd embodiment of the present invention, as shown in fig. 6, being based on
Second embodiment proposes multiple access method 3rd embodiment of the present invention, and in the present embodiment, the packet to be sent is containing more
Individual packet, the step S40 specifically include step：
Step S41, priority corresponding to each packet and channel matter in predetermined threshold value and the data to be sent are obtained
Measure service parameter；
It should be noted that the predetermined threshold value is threshold value set in advance, can be used to compare current idle
Whether the total quantity of time slot meets threshold value or technical staff corresponding to requirement setting by largely training and study obtains
The proper threshold value taken, the threshold value that can also be given tacit consent to, can also be the threshold value determined by other means certainly,
The present embodiment is not any limitation as to this；Priority corresponding to each packet can be according to the data content of each packet,
The significance level of each packet is obtained by comparing analysis, so that it is determined that transmission priority orders or pass through lookup
The mapping table of priority and packet obtains the corresponding priority of each packet, so that it is determined that transmission priority orders,
It can also be that each packet determined by other means sends priority orders, the present embodiment is not any limitation as to this；It is described
Channel quality service parameter is the penetration quality dynamic information of the transmission channel of current time slots, according to the channel quality service parameter energy
Enough determine whether the transmission channel quality of current time slots meets transmission requirement, and can be according to the channel quality service parameter
Dynamic adjustment modulation system and the code check of transmitting.
Step S42, each data are determined according to the predetermined threshold value, the priority and the channel quality service parameter
The default transmission condition of bag, the target time slot is chosen according to the default transmission condition from the free timeslot.
It should be noted that determined according to the predetermined threshold value, the priority and the channel quality service parameter
The default transmission condition of each packet, the default transmission condition are the sending method for being transmitted packet, that is, are determined
Whether each packet is transmitted, and how to send, and is sent in which time slot, according to the default transmission condition from it is described idle when
The target time slot is chosen in gap.
Further, the step S42 specifically includes following steps：
The total quantity of the free timeslot is compared with the predetermined threshold value, obtains comparison result；
The corresponding channel quality service parameter and the priority are distinguished according to the first node and all mid-side nodes,
And the comparison result determines the default transmission condition of each packet；
The target time slot is chosen from the free timeslot according to the default transmission condition.
It is understood that drawn to control network load, it is necessary to carry out priority to transmission services data i.e. to be sent
Point, the data to be sent include multiple packets, and each packet is divided into high priority packets according to the priority
With lower-priority data bag；Each node can outwards broadcast the channel quality service ginseng of time slot corresponding to oneself each packet simultaneously
Several situations up to standard, surrounding's transmission channel time slot occupancy that each node listens to, and each packet pair of all mid-side nodes
The situation up to standard of the channel quality service parameter for the time slot answered, can all influence the time slot application of data to be launched, can also influence
Discharged through the transmitting pause in transmitting packet with time slot,
Further, it is described according to the first node channel quality service parameter corresponding with all mid-side nodes difference
The default transmission condition of each packet is determined with the priority, and the comparison result, is specifically included：
Compare the channel quality corresponding with all mid-side node of channel quality service parameter corresponding to the first node to take
Business parameter；
When the comparison result is that the free timeslot total quantity is more than or equal to the predetermined threshold value, if described the
High priority packets channel quality service parameter corresponding to one node is less than high-priority data corresponding to all mid-side nodes
Bag channel quality service parameter, then the default transmission condition is the high priority packets for allowing to launch the first node；
When the comparison result is that the free timeslot total quantity is less than the predetermined threshold value, if the first node
Corresponding lower-priority data bag channel quality service parameter is higher than lower-priority data bag channel corresponding to all mid-side nodes
Quality services parameter, then the default transmission condition is to forbid launching the lower-priority data bag of the first node.
It should be appreciated that the first node can be corresponding respectively according to the first node and all mid-side nodes
The channel quality service parameter and the priority, and the comparison result determine the default transmission condition of each packet；
When the comparison result is that the free timeslot total quantity is more than or equal to the predetermined threshold value, if the first node pair
The high priority packets channel quality service parameter answered is less than high priority packets channel matter corresponding to all mid-side nodes
Service parameter is measured, then the default transmission condition is the high priority packets for allowing to launch the first node；When the ratio
When being that the free timeslot total quantity is less than the predetermined threshold value to result, if low priority number corresponding to the first node
It is higher than lower-priority data bag channel quality service parameter corresponding to all mid-side nodes according to bag channel quality service parameter, then institute
It is to forbid launching the lower-priority data bag of the first node to state default transmission condition；
In the specific implementation, in order to take into account heterogeneous networks scale, the number of time slots included in a frame is fixed, and signal
It can all be launched with each frame or launched once every several frames, in this way, it is ensured that in the case that frame structure is constant
The different nodes scale of self-organizing network is adapted to, when nodes are less, the target superframe includes less frame, so may be used
To accelerate the frequency of signal transmitting, time delay is reduced.When nodes are more, the target superframe includes more frame, so high
Priority service is that high priority packets can be launched with closeer frequency, and low priority traffice is that lower-priority data bag can
To launch with relatively thin frequency, that is, the transmitting of high-priority service is ensure that, in turn ensure that low priority traffice obtains scheduling money
Source.
Step S43, the repetition period of the target time slot is obtained, will be each when the repetition period being more than first threshold
Packet is sent in quasistatic time slot, and the quasistatic time slot is the time slot persistently sent with the repetition period；When described
When repetition period is less than the first threshold, each packet is sent in Burst slot, the Burst slot is with described heavy
The multiple cycle sends time slot once.
It should be noted that the first threshold is traditionally arranged to be once, naturally it is also possible to is adjusted according to actual conditions
Whole, the present embodiment is not any limitation as to this；The target time slot can be divided into two according to the repetition period of the target time slot
Class, one kind are the quasistatic time slots repeated in the cycle, and another kind of is Burst slot, and the quasistatic time slot that the cycle repeats can be with certain
Repetition period continues repeatedly to launch；Burst slot is then only launched once, needs next time to need to reacquire time slot during transmitting.Work as institute
When stating the repetition period as more than one time, each packet is sent in quasistatic time slot, the quasistatic time slot is with described heavy
The time slot that the multiple cycle persistently sends；When the repetition period is one time, each packet is sent in Burst slot, it is described prominent
It is the time slot with repetition period transmission once to send out time slot.
In the specific implementation, could have been sent for the business with fixed throughput requirement, and the multiple time slots of needs
Complete chunk data business can launch in the quasistatic time slot that the cycle repeats；And for burst small block data business then
Launch in Burst slot, as shown in fig. 7, Fig. 7 is quasistatic time slot and Burst slot signal in multiple access method of the present invention
Figure；N is nth frame, and N+1 is the frame behind nth frame, and all mid-side nodes are listened to after quasistatic time slot M1 when can know current
Gap, and the following time slot occurred at a time interval all can be occupied, so as to avoid in advance to reduce time slot collision.Fig. 7
In, it can detect that time slot 1 also knows that time slot 6 also can be occupied after occupied by quasistatic time slot M1.All mid-side nodes are intercepted
It can only represent that current time slots 3 are occupied to Burst slot M2, the Time Slot Occupancy in future can not be known.
The present embodiment is corresponding by obtaining each packet in predetermined threshold value and the data to be sent by such scheme
Priority and channel quality service parameter, according to the predetermined threshold value, the priority and the channel quality service join
Number determines the default transmission condition of each packet, and the target is chosen from the free timeslot according to the default transmission condition
Time slot, the repetition period of the target time slot is obtained, when the repetition period is more than one time, by each packet in quasistatic
Sent in time slot；When the repetition period is one time, each packet is sent in Burst slot, by data to be sent
Priority division is carried out, rationally efficiently channel resource is utilized, that is, ensure that the transmitting of high-priority service, in turn ensure that low excellent
First level business obtains scheduling resource, by the way that each packet is selected in quasistatic time slot according to the repetition period of the target time slot
Or launch in Burst slot, time slot collision is avoided, the speed and efficiency of data transfer is further improved, saves transmission number
According to time, make network control it is simpler efficiently.
In addition, the embodiment of the present invention also proposes a kind of storage medium, multiple access joining procedure is stored with the storage medium,
Following operation is realized when the multiple access joining procedure is executed by processor：
First node obtains current network load, and target superframe is set dynamically according to the current network load；
Target time section is divided according to the target superframe, when obtaining in the target superframe corresponding to each frame
Gap；
The first kind time slot of acquisition first node occupies information and the second class time slot of section point occupies information, according to institute
State that first kind time slot occupies information and the second class time slot occupies information and free timeslot, the first segment are obtained from each time slot
Point is asynchronous with the clock of the section point；
Target time slot is chosen from the free timeslot, data to be sent are sent in the target time slot.
Further, following operation is also realized when the multiple access joining procedure is executed by processor：
The first kind time slot is obtained from the first message of the first node and occupies information, or is saved from described second
The second class time slot, which is obtained, in second message of point occupies information, wherein, when first message is according to the first kind
Gap occupies the message of information determination, and second message is the section point according to first message and first message
Positional information determine message, the positional information be the section point receive first message original position and
The information of end position.
Further, following operation is also realized when the multiple access joining procedure is executed by processor：
The time slot according to corresponding to time order and function order by each frame in the target superframe be divided into before to time slot and it is backward when
Gap, the first kind time slot is obtained from the first message of the first node by the forward direction time slot and the backward time slot
Information is occupied, or obtains the second class time slot from the second message of the section point and occupies information.
Further, following operation is also realized when the multiple access joining procedure is executed by processor：
Pass through the error rate for data to be sent described in symbol acquisition of information of being read really in the backward time slot；
The target time slot is changed when the error rate exceedes predetermined threshold value, new mesh is chosen from the free timeslot
Timestamp gap, the data to be sent are sent in the new target time slot.
Further, following operation is also realized when the multiple access joining procedure is executed by processor：
Obtain priority corresponding to each packet and channel quality service ginseng in predetermined threshold value and the data to be sent
Number；
The default of each packet is determined according to the predetermined threshold value, the priority and the channel quality service parameter
Transmission condition, the target time slot is chosen from the free timeslot according to the default transmission condition；
The repetition period of the target time slot is obtained, when the repetition period being more than first threshold, each packet is existed
Sent in quasistatic time slot, the quasistatic time slot is the time slot persistently sent with the repetition period；When the repetition period
During less than the first threshold, each packet is sent in Burst slot, the Burst slot is to be sent out with the repetition period
Send time slot once.
Further, following operation is also realized when the multiple access joining procedure is executed by processor：
The total quantity of the free timeslot is compared with the predetermined threshold value, obtains comparison result；
The corresponding channel quality service parameter and the priority are distinguished according to the first node and all mid-side nodes,
And the comparison result determines the default transmission condition of each packet；
The target time slot is chosen from the free timeslot according to the default transmission condition.
Further, following operation is also realized when the multiple access joining procedure is executed by processor：
Compare the channel quality corresponding with all mid-side node of channel quality service parameter corresponding to the first node to take
Business parameter；
When the comparison result is that the free timeslot total quantity is more than or equal to the predetermined threshold value, if described the
High priority packets channel quality service parameter corresponding to one node is less than high-priority data corresponding to all mid-side nodes
Bag channel quality service parameter, then the default transmission condition is the high priority packets for allowing to launch the first node；
When the comparison result is that the free timeslot total quantity is less than the predetermined threshold value, if the first node
Corresponding lower-priority data bag channel quality service parameter is higher than lower-priority data bag channel corresponding to all mid-side nodes
Quality services parameter, then the default transmission condition is to forbid launching the lower-priority data bag of the first node.
Further, following operation is also realized when the multiple access joining procedure is executed by processor：
Current network load is obtained, data packet number to be sent is obtained according to the current network load；
The size of the target superframe is determined according to the current network load, according to determining the data packet number
The transmitting repetition period of target superframe, the target is set to surpass according to the target superframe size and the transmitting repetition period
Frame.
The present embodiment is obtained current network by first node and born by such scheme, the present embodiment by such scheme
Carry, target superframe be set dynamically according to the current network load, target time section divided according to the target superframe,
Time slot corresponding to each frame in the target superframe is obtained, the first kind time slot for obtaining first node occupies information and section point
Second class time slot occupies information, occupies information according to the first kind time slot and the second class time slot occupies information from each time slot
Middle acquisition free timeslot, the first node is asynchronous with the clock of the section point, and mesh is chosen from the free timeslot
Timestamp gap, data to be sent are sent in the target time slot, each node is operated under the clock of oneself, it is not necessary to rely on complete
Net is synchronous, avoids signaling or the problem of agreement excessively causes efficiency of transmission low, gap sends data at one's leisure, improves data
The speed and efficiency of transmission, the time for sending data is saved, make network control simpler, and make network more healthy and stronger.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or system including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or system institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Other identical element also be present in the process of key element, method, article or system.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of multiple access method, it is characterised in that the multiple access method includes：
First node obtains current network load, and target superframe is set dynamically according to the current network load；
Target time section is divided according to the target superframe, obtains time slot corresponding to each frame in the target superframe；
The first kind time slot for obtaining first node occupies information and the second class time slot of section point occupies information, according to described the
A kind of time slot occupies information and the second class time slot occupies information and obtains free timeslot from each time slot, the first node with
The clock of the section point is asynchronous；
Target time slot is chosen from the free timeslot, data to be sent are sent in the target time slot.
2. multiple access method as claimed in claim 1, it is characterised in that the first kind time slot for obtaining first node accounts for
It is believed that the second class time slot of breath and section point occupies information, when occupying information and second class according to the first kind time slot
Gap occupies information and obtains free timeslot from each time slot, specifically includes：
The first kind time slot is obtained from the first message of the first node and occupies information, or from the section point
The second class time slot is obtained in second message and occupies information, wherein, first message is to be accounted for according to the first kind time slot
It is believed that the message that breath determines, second message is position of the section point according to first message and first message
The message that confidence breath determines, the positional information are original position and the end that the section point receives first message
The information of position.
3. multiple access method as claimed in claim 2, it is characterised in that in first message from the first node
Obtain the first kind time slot and occupy information, or obtain the second class time slot from the second message of the section point and account for
It is believed that breath, is specifically included：
The time slot according to corresponding to time order and function order by each frame in the target superframe be divided into before to time slot and backward time slot, lead to
Cross the forward direction time slot and the backward time slot obtains the first kind time slot from the first message of the first node and occupied
Information, or obtain the second class time slot from the second message of the section point and occupy information.
4. multiple access method as claimed in claim 3, it is characterised in that it is described from the free timeslot choose target when
Gap, after data to be sent are sent in the target time slot, the multiple access method also includes：
Pass through the error rate for data to be sent described in symbol acquisition of information of being read really in the backward time slot；
The target time slot is changed when the error rate exceedes predetermined threshold value, when new target is chosen from the free timeslot
Gap, the data to be sent are sent in the new target time slot.
5. such as the multiple access method any one of claim 1-4, it is characterised in that the packet to be sent is containing more
Individual packet；
Correspondingly, it is described to choose target time slot from the free timeslot, data to be sent are sent in the target time slot,
Specifically include：
Obtain priority corresponding to each packet and channel quality service parameter in predetermined threshold value and the data to be sent；
The default transmission of each packet is determined according to the predetermined threshold value, the priority and the channel quality service parameter
Condition, the target time slot is chosen from the free timeslot according to the default transmission condition；
The repetition period of the target time slot is obtained, when the repetition period being more than first threshold, by each packet accurate quiet
Sent in state time slot, the quasistatic time slot is the time slot persistently sent with the repetition period；It is less than when the repetition period
During the first threshold, each packet is sent in Burst slot, the Burst slot is to send one with the repetition period
Secondary time slot.
6. multiple access method as claimed in claim 5, it is characterised in that it is described according to the predetermined threshold value, it is described excellent
First level and the channel quality service parameter determine the default transmission condition of each packet, according to the default transmission condition from institute
State and the target time slot is chosen in free timeslot, specifically include：
The total quantity of the free timeslot is compared with the predetermined threshold value, obtains comparison result；
According to the first node and all mid-side nodes corresponding channel quality service parameter of difference and the priority, and
The comparison result determines the default transmission condition of each packet；
The target time slot is chosen from the free timeslot according to the default transmission condition.
7. multiple access method as claimed in claim 6, it is characterised in that described according to the first node and all mid-side nodes
The channel quality service parameter and the priority corresponding to respectively, and the comparison result determine the default of each packet
Transmission condition, is specifically included：
Compare the channel quality service corresponding with all mid-side node of channel quality service parameter corresponding to the first node to join
Number；
When the comparison result is that the free timeslot total quantity is more than or equal to the predetermined threshold value, if the first segment
High priority packets channel quality service parameter is less than high priority packets corresponding to all mid-side nodes and believed corresponding to point
Road quality services parameter, then the default transmission condition is the high priority packets for allowing to launch the first node；
When the comparison result is that the free timeslot total quantity is less than the predetermined threshold value, if the first node is corresponding
Lower-priority data bag channel quality service parameter be higher than lower-priority data bag channel quality corresponding to all mid-side nodes
Service parameter, then the default transmission condition is to forbid launching the lower-priority data bag of the first node.
8. such as the multiple access method any one of claim 1-4, it is characterised in that the first node obtains current
Network load, target superframe is set dynamically according to the current network load, specifically included：
Current network load is obtained, data packet number to be sent is obtained according to the current network load；
The size of the target superframe is determined according to the current network load, the target is determined according to the data packet number
The transmitting repetition period of superframe, the target superframe is set according to the target superframe size and the transmitting repetition period.
9. a kind of node, it is characterised in that the node includes：Memory, processor and it is stored on the memory and can
The multiple access joining procedure run on the processor, the multiple access joining procedure are arranged for carrying out as appointed in claim 1 to 8
The step of multiple access method described in one.
10. a kind of storage medium, it is characterised in that multiple access joining procedure, the multiple access access are stored with the storage medium
The step of multiple access method as any one of claim 1 to 8 is realized when program is executed by processor.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112820073A (en) * | 2020-12-31 | 2021-05-18 | 哈尔滨学院 | Urban drainage early warning system based on GIS |
| CN112883239A (en) * | 2021-01-26 | 2021-06-01 | 北京升哲科技有限公司 | Resource allocation method and device, computer equipment and storage medium |
| CN113114340A (en) * | 2021-03-30 | 2021-07-13 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Simultaneous same-frequency full-duplex measurement and control communication networking method |
| CN113839720A (en) * | 2021-09-06 | 2021-12-24 | 中山大学 | Multiple access method of directional underwater acoustic network |
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