CN115348610B - Millimeter wave multilink self-adaptive communication method, electronic equipment and storage medium - Google Patents

Millimeter wave multilink self-adaptive communication method, electronic equipment and storage medium Download PDF

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CN115348610B
CN115348610B CN202211269683.1A CN202211269683A CN115348610B CN 115348610 B CN115348610 B CN 115348610B CN 202211269683 A CN202211269683 A CN 202211269683A CN 115348610 B CN115348610 B CN 115348610B
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link
millimeter wave
links
transmission
ith
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CN115348610A (en
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戚建淮
张莉
周杰
宋晶
杜玲禧
刁润
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Chengdu Ether Node Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses a millimeter wave multilink self-adaptive communication method, electronic equipment and a storage medium, wherein the method comprises the following steps: the source node wirelessly communicates with the target node through a plurality of millimeter wave links; acquiring a transmission rate requirement of source node service data; the source node respectively sends test data to the target node through a plurality of millimeter wave links; acquiring the number of communication nodes of each millimeter wave link, and the signal-to-interference-and-noise ratio, the received signal strength and the transmission delay of transmission test data to calculate the link performance of each millimeter wave link; calculating the link channel capacity of each millimeter wave link; selecting standby millimeter wave links and keeping activated millimeter wave links based on the transmission rate requirement of service data of a source node and the number of communication nodes, link performance and link channel capacity of each millimeter wave link; the source node sends traffic data to the target node over the millimeter-wave link that remains enabled. The invention dynamically optimizes the enabled millimeter wave link and improves the comprehensive performance of data transmission among nodes.

Description

Millimeter wave multilink self-adaptive communication method, electronic equipment and storage medium
Technical Field
The invention relates to the field of millimeter wave communication, in particular to a millimeter wave multilink self-adaptive communication method, electronic equipment and a storage medium.
Background
In the traditional wireless communication technology, wireless communication is carried out between two network nodes through a single link, but with the high-speed development of technologies such as monitoring, multimedia, wireless communication, internet and the like, the mass of media data such as monitoring data, voice, video and the like and other data are increased, the scenes that the mass data needs to be wirelessly transmitted between the two network nodes are more and more common, the single-link wireless transmission cannot meet the requirements of the two network nodes on large bandwidth, high speed, low time delay and the like for transmitting the mass data, and a plurality of links exist between the two network nodes in the prior art to improve the transmission quality.
With the rapid development of the mobile internet and the internet of things, data traffic is increased explosively, low-frequency band spectrum resources are increasingly tense, and the development to higher frequency bands is urgently needed. The millimeter wave communication frequency band is 30-300 GHz, the wavelength is 1-10 mm, and the unlicensed bandwidth up to GHz can be provided.
Millimeter wave combined with multilink transmission is an inevitable choice for dealing with the increase of data flow in the 5G era, but although multilink transmission can theoretically improve transmission quality, in an actual application environment, the comprehensive performance of multilink transmission is not ideal, the main reason is that most multilink transmissions lack a strategy for dynamically scheduling transmission links in real time according to actual transmission conditions, and usually all links participate in transmission tasks, so that on one hand, links with poor quality affect the transmission performance of links with good quality, and on the other hand, in the flat and valley periods of data transmission, that is, under the condition that the transmission data volume is small, the total power consumption of all links is increased, and the comprehensive performance of multilink transmission is reduced.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a millimeter wave multilink adaptive communication method, electronic equipment and a storage medium.
In a first aspect, the present invention provides a millimeter wave multilink adaptive communication method, including the following steps:
s1, a source node wirelessly communicates with a target node through a plurality of millimeter wave links, and a single millimeter wave link comprises at least two communication nodes;
s2, acquiring the service data transmission requirement of the source node;
s3, the source node sends test data to the target node through a plurality of millimeter wave links respectively;
s4, acquiring the number of communication nodes of each millimeter wave link, and the signal-to-interference-and-noise ratio, the received signal strength and the transmission delay of transmission test data to calculate the link performance of each millimeter wave link;
s5, calculating link channel capacity of each millimeter wave link;
s6, selecting standby millimeter wave links and keeping the activated millimeter wave links based on the service data transmission requirements of the source nodes and the number of communication nodes, link performance and link channel capacity of each millimeter wave link;
and S7, the source node sends service data to the target node through the millimeter wave link which is kept enabled.
Preferably, the signal-to-interference-and-noise ratio and the received signal strength of the millimeter wave link transmission test data in S4 are respectively
Figure 100002_DEST_PATH_IMAGE001
、/>
Figure 104133DEST_PATH_IMAGE002
；/>
Figure 372304DEST_PATH_IMAGE003
；
Wherein
Figure 302214DEST_PATH_IMAGE004
Represents the signal-to-interference-and-noise ratio, and/or the transmission test data of the ith millimeter wave link>
Figure 919009DEST_PATH_IMAGE005
Represents the received signal strength of the test data transmitted by the ith millimeter wave link, m is the number of the millimeter wave links, and is greater than or equal to>
Figure 426213DEST_PATH_IMAGE006
Is the number of communication nodes of the ith millimeter wave link>
Figure 639020DEST_PATH_IMAGE007
Is the signal to interference plus noise ratio of the jth communication node of the ith millimeter wave link>
Figure 813649DEST_PATH_IMAGE008
The received signal strength of the jth communication node of the ith millimeter wave link.
Preferably, the transmission delay of the millimeter wave link in S4 for transmitting the test data is:
Figure 306073DEST_PATH_IMAGE009
wherein->
Figure 566153DEST_PATH_IMAGE010
Represents the transmission delay of the ith millimeter wave link for transmitting the test data>
Figure 317071DEST_PATH_IMAGE012
For forwarding delay, is asserted>
Figure 470841DEST_PATH_IMAGE013
And the receiving time delay of the jth communication node of the ith millimeter wave link.
Preferably, the calculation method of the link performance of the millimeter wave link in S4 is as follows:
Figure 508067DEST_PATH_IMAGE014
in which>
Figure 396389DEST_PATH_IMAGE015
Represents the link performance of the ith millimeter wave link, <' >>
Figure 810052DEST_PATH_IMAGE016
For weighting factors of the intensity of the received information, <' >>
Figure 316864DEST_PATH_IMAGE017
Is a weighting factor of the signal to interference plus noise ratio>
Figure 931516DEST_PATH_IMAGE018
Is the weight coefficient of the transmission delay.
Preferably, the method for calculating the link channel capacity of the millimeter wave link in S5 includes: dividing the millimeter wave link into a plurality of sub-links, respectively calculating the channel capacity of the sub-links, and determining the channel capacity of the link based on the channel capacity of the sub-links.
Preferably, the channel capacity of the sublink is expressed as
Figure 900609DEST_PATH_IMAGE019
Wherein->
Figure 977018DEST_PATH_IMAGE020
Represents the channel capacity of the jth 'sub-link of the ith millimeter wave link, <' > or>
Figure 980746DEST_PATH_IMAGE021
Is the bandwidth of the jth' sub-link of the ith millimeter wave link, is->
Figure 500720DEST_PATH_IMAGE022
The signal to interference plus noise ratio is the signal to interference plus noise ratio of the j' +1 communication node of the ith millimeter wave link; link channel capacity is expressed as +>
Figure 957110DEST_PATH_IMAGE023
，/>
Figure 338675DEST_PATH_IMAGE024
Indicating the link channel capacity of the ith millimeter wave link.
Preferably, the service data transmission requirement in S2 includes a lower limit of a transmission rate
Figure 196909DEST_PATH_IMAGE025
。
Preferably, said S6 comprises the following sub-steps:
s61, preset
Figure 153364DEST_PATH_IMAGE026
The link state variable of the kth alternative link scheme is
Figure 221683DEST_PATH_IMAGE027
，/>
Figure 515261DEST_PATH_IMAGE028
Wherein
Figure 103368DEST_PATH_IMAGE029
；
S62, based on the link state variable
Figure 89779DEST_PATH_IMAGE030
The number of communication nodes of each millimeter wave link->
Figure 149788DEST_PATH_IMAGE006
Link performance>
Figure 512637DEST_PATH_IMAGE015
And link channel capacity->
Figure 955250DEST_PATH_IMAGE024
Determining enabled link capacity +>
Figure 502775DEST_PATH_IMAGE031
Enabled link number ≧ greater or lesser>
Figure 421053DEST_PATH_IMAGE032
Number of enabled communication nodes ≥>
Figure 197379DEST_PATH_IMAGE033
And average link performance->
Figure 884712DEST_PATH_IMAGE034
；
S63, based on the enabled link capacity
Figure 839024DEST_PATH_IMAGE031
Enabled link number ≧ greater or lesser>
Figure 979018DEST_PATH_IMAGE032
Number of enabled communication nodes ≥>
Figure 824615DEST_PATH_IMAGE033
Average link performance->
Figure 491088DEST_PATH_IMAGE034
And the corresponding weight coefficient determines the comprehensive performance function f (x) of the scheme;
s64, solving for satisfaction
Figure 990203DEST_PATH_IMAGE035
The link state variable ^ when the scheme comprehensive performance function f (x) takes the maximum value>
Figure 492859DEST_PATH_IMAGE030
；
S65, according to the link state variable
Figure 735622DEST_PATH_IMAGE030
The standby and keep-enabled millimeter wave links are selected.
In a second aspect, the present invention provides an electronic device, which includes a memory, and a computer program and a processor stored thereon, wherein the processor implements the millimeter wave multilink adaptive communication method when executing the computer program.
In a third aspect, the present invention provides a storage medium, where computer-executable instructions are stored, and when the computer-executable instructions are loaded and executed by a processor, the millimeter wave multilink adaptive communication method is implemented.
In conclusion, the invention has the following beneficial effects: the method and the device dynamically optimize the active and standby millimeter wave links in the multiple millimeter wave links of the source node and the target node by combining the transmission rate requirement of the service data, the number of communication nodes of each millimeter wave link, the link performance and the link channel capacity, and improve the comprehensive performance of the millimeter wave multilink transmission between the nodes.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions and advantages of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages disclosed in the embodiments of the present invention more clearly apparent, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the invention and are not intended to limit the embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Millimeter wave and multilink transmission are an inevitable choice for dealing with the increase of data flow in the 5G era, multilink transmission can theoretically improve transmission quality, but in an actual application environment, the comprehensive performance of multilink transmission is not ideal, and the main reason is that most multilink transmission lacks a strategy for dynamically scheduling transmission links in real time according to actual transmission conditions, and all links generally participate in transmission tasks, so that the links with poor quality affect the transmission performance of the links with better quality on one hand, and on the other hand, in the flat and valley periods of data transmission, that is, under the condition that the transmission data amount is small, the total power consumption is increased by starting all links, and the comprehensive performance of multilink transmission is reduced.
In order to solve the above problem, an embodiment of the present application provides a millimeter wave multilink adaptive communication method, as shown in fig. 1, including:
s1, a source node carries out wireless communication with a target node through a plurality of millimeter wave links, and a single millimeter wave link comprises at least two communication nodes, namely at least a transmitting node and a receiving node.
Depending on the distance between the source node and the target node, at least one relay node may exist between the single millimeter wave link transmitting node and the receiving node.
In this step, when the source node does not transmit the service data, each millimeter wave link is in a low power consumption standby state, that is, each millimeter wave link communication node is in a standby state, and a signal is searched regularly; and each millimeter wave link is in the enabled state only when the source node needs to carry out service data transmission.
And S2, acquiring the service data transmission requirement of the source node.
Wherein the service data transmission requirement comprises a lower limit of a transmission rate
Figure 20716DEST_PATH_IMAGE025
. After the source node generates the service data transmission requirement, the method obtains the source nodeThe size of the service data and the maximum time delay allowing the target node to receive the service data so as to determine the lower limit of the transmission rate of the service data of the source node>
Figure 690732DEST_PATH_IMAGE025
。
And S3, the source node respectively sends the test data to the target node through a plurality of millimeter wave links.
In this step, combining S1 and S2, when the source node generates a service data transmission demand, the source node is in an idle state, the source node first sends an awake signal to a first communication node, i.e., a transmitting node, of each millimeter wave link, and each transmitting node wakes up the subsequent communication nodes again until all communication nodes of the millimeter wave links are woken up and are in an enabled state, and then the source node sends test data to each millimeter wave link again. When the source node generates a service data transmission requirement, the source node is in an occupied state, namely a service data transmission task exists at present, and after the source node finishes the current transmission task, all millimeter wave links are enabled to send test data to all millimeter wave links.
The source node sends the same test data to the transmitting node of each millimeter wave link, for the millimeter wave link with the relay node, the transmitting node forwards the received test data in sequence by the relay node to the corresponding receiving node, and finally the receiving node sends the test data to the target node; and for the millimeter wave link without the relay node, the transmitting node directly and wirelessly transmits the received test data to the corresponding receiving node, and then the receiving node transmits the test data to the target node.
And S4, acquiring the number of the communication nodes of each millimeter wave link, and the signal-to-interference-and-noise ratio, the received signal strength and the transmission delay of the transmission test data to calculate the link performance of each millimeter wave link.
And S3, in the step, the first communication node of the single millimeter wave link, namely the communication node behind the transmitting node, collects data including the signal-to-interference-and-noise ratio, the received signal strength and the received time delay of the first communication node and the transmitting node when receiving the test data, marks the data and temporarily stores the data. After the target node receives the test data of the millimeter wave link, a confirmation signal is replied to the last communication node of the millimeter wave link, then the millimeter wave link returns marking acquisition data to the first communication node through the superior communication node from the last communication node, and finally the first communication node sends the received marking acquisition data of all the subsequent communication nodes to the source node. And the source node determines the signal-to-interference-and-noise ratio, the received signal strength and the transmission delay of the transmission test data of each millimeter wave link based on the marking acquisition data of each millimeter wave link, and further calculates the link performance of each millimeter wave link.
In some embodiments of the present application, there are m millimeter wave links, and the number of communication nodes of the ith | i ∈ (1,2.., a., m) millimeter wave link is
Figure 946264DEST_PATH_IMAGE006
. The signal-to-interference-and-noise ratio and the received signal strength of the ith millimeter wave link transmission test data are respectively expressed as->
Figure 851772DEST_PATH_IMAGE001
、/>
Figure 633783DEST_PATH_IMAGE002
. Wherein->
Figure 350066DEST_PATH_IMAGE004
Represents the signal-to-interference-and-noise ratio, and/or the transmission test data of the ith millimeter wave link>
Figure 951949DEST_PATH_IMAGE007
Is the ith millimeter wave link ^ h>
Figure 162613DEST_PATH_IMAGE036
The signal-to-interference-and-noise ratio of each communication node; />
Figure 674497DEST_PATH_IMAGE005
Represents the received signal strength of the ith millimeter wave link transmitting test data>
Figure 686315DEST_PATH_IMAGE008
The received signal strength of the jth communication node of the ith millimeter wave link.
The transmission delay of the ith millimeter wave link for transmitting the test data is expressed as
Figure 900127DEST_PATH_IMAGE009
In which>
Figure 288383DEST_PATH_IMAGE010
Represents the transmission delay of the ith millimeter wave link for transmitting the test data>
Figure 389195DEST_PATH_IMAGE012
For forwarding delay, is asserted>
Figure 571914DEST_PATH_IMAGE013
And receiving time delay of the jth communication node of the ith millimeter wave link.
The link performance of the millimeter wave link is calculated in the mode of
Figure 54715DEST_PATH_IMAGE014
Wherein
Figure 856449DEST_PATH_IMAGE015
Represents link performance of the ith millimeter wave link, in conjunction with the millimeter wave signal>
Figure 936401DEST_PATH_IMAGE016
For weighting factors of the intensity of the received information, <' >>
Figure 945814DEST_PATH_IMAGE017
Is a weighting factor of the signal to interference plus noise ratio>
Figure 884951DEST_PATH_IMAGE018
The weight coefficient is set according to the importance degree of each parameter.
And S5, calculating the link channel capacity of each millimeter wave link.
The method for calculating the link channel capacity of the millimeter wave link comprises the following steps: dividing the millimeter wave link into a plurality of sub-links, respectively calculating the channel capacity of the sub-links, and determining the channel capacity of the link based on the channel capacity of the sub-links.
In some embodiments of the present application, in combination with S4, the number of communication nodes of the ith millimeter wave link is equal to
Figure 444371DEST_PATH_IMAGE006
If the number of the sub-link is->
Figure 909987DEST_PATH_IMAGE037
. The channel capacity of the sublinks is expressed as
Figure 824722DEST_PATH_IMAGE019
Wherein->
Figure 844631DEST_PATH_IMAGE020
Represents the channel capacity of a jth sub-link of an ith millimeter wave link, and +>
Figure 253747DEST_PATH_IMAGE021
Is the bandwidth of the jth' sub-link of the ith millimeter wave link, is->
Figure 308290DEST_PATH_IMAGE022
Is the signal-to-interference-and-noise ratio of the j' +1 communication node of the ith millimeter wave link.
The link channel capacity is expressed as
Figure 892462DEST_PATH_IMAGE023
，/>
Figure 540612DEST_PATH_IMAGE024
Indicating the link channel capacity of the ith millimeter wave link.
And S6, selecting the standby millimeter wave link and the enabled millimeter wave link based on the service data transmission requirement of the source node and the communication node number, the link performance and the link channel capacity of each millimeter wave link.
In connection with S5, in some embodiments of the present application, step S6 comprises the following sub-steps:
s61, preset
Figure 612473DEST_PATH_IMAGE026
A link state variable of a different, possible alternative link scheme, the kth alternative link scheme being { - }>
Figure 646157DEST_PATH_IMAGE027
，/>
Figure 778062DEST_PATH_IMAGE028
Wherein
Figure 913508DEST_PATH_IMAGE029
。
S62, based on the link state variable
Figure 789060DEST_PATH_IMAGE030
The number of communication nodes of each millimeter wave link>
Figure 444294DEST_PATH_IMAGE006
Link performance->
Figure 481521DEST_PATH_IMAGE015
And link channel capacity->
Figure 369842DEST_PATH_IMAGE024
Determining an enabled link capacity ≧ for the kth alternative link scheme>
Figure 908140DEST_PATH_IMAGE031
Enabled link number ≧ greater or lesser>
Figure 791782DEST_PATH_IMAGE032
Number of enabled communication nodes>
Figure 875276DEST_PATH_IMAGE033
And average link performance->
Figure 109948DEST_PATH_IMAGE034
。
Wherein the enabled link capacity is represented as
Figure 956331DEST_PATH_IMAGE038
The number of active links is expressed as->
Figure 694480DEST_PATH_IMAGE039
The number of enabled communication nodes is expressed as->
Figure 480033DEST_PATH_IMAGE040
And the average link performance is expressed as ≧>
Figure 326635DEST_PATH_IMAGE041
。
S63, based on the enabled link capacity
Figure 223047DEST_PATH_IMAGE031
Enabled link number ≧ greater or lesser>
Figure 81282DEST_PATH_IMAGE032
Number of enabled communication nodes ≥>
Figure 522890DEST_PATH_IMAGE033
Average link performance->
Figure 466575DEST_PATH_IMAGE034
And determining a scheme comprehensive performance function f (x) by the corresponding weight coefficient.
Wherein the scheme overall performance function is expressed as
Figure 901098DEST_PATH_IMAGE042
In which>
Figure 613840DEST_PATH_IMAGE043
To/is>
Figure 662567DEST_PATH_IMAGE044
And respectively representing the enabled link capacity, the enabled link number, the enabled communication node number and the weight coefficient of the average link performance, wherein the weight coefficient is set according to the importance degree of each parameter.
S64, solving for satisfaction
Figure 982297DEST_PATH_IMAGE035
The link state variable ≥ when the solution aggregate performance function f (x) assumes a maximum value>
Figure 79566DEST_PATH_IMAGE030
。
In this step, the
Figure 522179DEST_PATH_IMAGE026
Substituting different link state variables into a scheme comprehensive performance function to obtain->
Figure 679491DEST_PATH_IMAGE026
And (4) each function value. When the number of the function values is less, the maximum function value can be found through direct comparison, and the required link state variable is further determined. When the number of the function values is large, the maximum scheme comprehensive performance function value can be found by selecting the optimal algorithm for finding the maximum value, such as particle swarm algorithm, genetic algorithm and the like, so that the solved link state variable is determined.
S65, according to the link state variable
Figure 722402DEST_PATH_IMAGE030
The standby and keep-enabled millimeter wave links are selected.
In this step, in conjunction with S64, after the link state variables are determined, the link state variables are followed
Figure 623362DEST_PATH_IMAGE027
And the values of the m elements respectively correspond to the control of whether the m millimeter wave links are standby or kept enabled. For standby millimeter wave link, the source node sends standby signal to its communication node for standby control, and for millimeter wave link which is kept enabled, the source node sends standby signalAnd sending a hold signal to the communication node of the communication node to carry out hold enabling control.
And S7, the source node sends service data to the target node through the millimeter wave link which is kept enabled.
Combining S1 to S3, after the target node receives the service data, replying a completion signal to the source node through at least one enabled millimeter wave link, and after the source node receives the completion signal, if no queuing transmission task exists, the source node sends a standby signal to the enabled millimeter wave link to enable the source node to operate with low power consumption; if the queued transmission task exists, service data transmission is carried out according to the self-adaptive communication method S1-S7 of the application.
The method dynamically optimizes the active and standby millimeter wave links in the multiple millimeter wave links of the source node and the target node by combining the transmission rate requirement of service data, the number of communication nodes of each millimeter wave link, the link performance and the link channel capacity, and improves the comprehensive performance of millimeter wave multilink transmission between the nodes.
The embodiment of the application also provides an electronic device, which comprises a memory and a processor, wherein the memory and the processor can be connected through a bus or in other ways. The memory may be used to store software programs, computer programs, and modules, such as the programs/modules corresponding to the above-described millimeter wave multilink adaptive communication method; the processor implements the millimeter wave multilink adaptive communication method by executing computer programs and modules in the memory.
The processor may be a central processing unit, a digital signal processor, an application specific integrated circuit, a field programmable gate array, etc., and the memory may be a high speed random access memory, a non-transitory memory, etc.
The embodiment of the present application further provides a storage medium, where computer-executable instructions are stored in the storage medium, and when the computer-executable instructions are loaded and executed by a processor, the millimeter wave multilink adaptive communication method is implemented. The storage medium may be one or a combination of more of a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, and the like.
It should be noted that: the precedence order of the above embodiments of the present invention is only for description, and does not represent the merits of the embodiments. While certain embodiments of the present disclosure have been described above, other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments.
Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware. The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. A millimeter wave multi-link adaptive communication method, the method comprising the steps of:
s1, a source node wirelessly communicates with a target node through a plurality of millimeter wave links, and a single millimeter wave link comprises at least two communication nodes;
s2, acquiring a service data transmission requirement of a source node; the service data transmission requirement in S2 comprises a lower limit of transmission rate
Figure DEST_PATH_IMAGE001
After the source node generates the service data transmission requirement, the size of the service data of the source node and the maximum time delay allowing the target node to receive the service data are obtained, so that the service data of the source node are determinedA lower limit of transmission rate;
s3, the source node sends test data to the target node through a plurality of millimeter wave links respectively;
s4, acquiring the number of communication nodes of each millimeter wave link, and the signal-to-interference-and-noise ratio, the received signal strength and the transmission delay of transmission test data to calculate the link performance of each millimeter wave link;
s5, calculating link channel capacity of each millimeter wave link;
s6, selecting standby millimeter wave links and keeping the activated millimeter wave links based on the service data transmission requirements of the source nodes and the number of communication nodes, link performance and link channel capacity of each millimeter wave link;
s7, the source node sends service data to the target node through the enabled millimeter wave link;
the S6 comprises the following substeps:
s61, preset
Figure DEST_PATH_IMAGE002
The link state variable of the kth alternative link scheme is
Figure DEST_PATH_IMAGE003
，
Figure DEST_PATH_IMAGE004
Wherein
Figure DEST_PATH_IMAGE005
；
S62, based on the link state variable
Figure DEST_PATH_IMAGE006
Number of communication nodes of each millimeter wave link
Figure DEST_PATH_IMAGE007
Link performance
Figure DEST_PATH_IMAGE008
And link channel capacity
Figure DEST_PATH_IMAGE009
Determining enabled link capacity
Figure DEST_PATH_IMAGE010
Number of enabled links
Figure DEST_PATH_IMAGE011
Number of enabled communication nodes
Figure DEST_PATH_IMAGE012
And average link performance
Figure DEST_PATH_IMAGE013
；
S63, based on the enabled link capacity
Figure 89520DEST_PATH_IMAGE010
Number of enabled links
Figure 944343DEST_PATH_IMAGE011
Number of enabled communication nodes
Figure 927343DEST_PATH_IMAGE012
Average link performance
Figure 588131DEST_PATH_IMAGE013
Determining a scheme comprehensive performance function f (x) by the weight coefficient corresponding to the weight coefficient;
s64, solving for satisfaction
Figure DEST_PATH_IMAGE014
And link state variables when the scheme comprehensive performance function f (x) obtains the maximum value
Figure DEST_PATH_IMAGE015
；
S65, according to the link state variable
Figure 543449DEST_PATH_IMAGE006
The standby and keep-enabled millimeter wave links are selected.
2. The millimeter wave multi-link adaptive communication method according to claim 1, wherein the signal to interference plus noise ratio and the received signal strength of the millimeter wave link transmission test data in S4 are respectively
Figure DEST_PATH_IMAGE016
、
Figure DEST_PATH_IMAGE017
；
Figure DEST_PATH_IMAGE018
；
Wherein
Figure DEST_PATH_IMAGE019
The signal-to-interference-and-noise ratio of the test data transmitted by the ith millimeter wave link is represented,
Figure DEST_PATH_IMAGE020
the strength of a received signal of the test data transmitted by the ith millimeter wave link is represented, m is the number of the millimeter wave links,
Figure DEST_PATH_IMAGE021
the number of communication nodes of the ith millimeter wave link,
Figure DEST_PATH_IMAGE022
the signal-to-interference-and-noise ratio of the jth communication node of the ith millimeter wave link,
Figure DEST_PATH_IMAGE023
the received signal strength of the jth communication node of the ith millimeter wave link.
3. The millimeter wave multilink adaptive communication method according to claim 2, wherein the transmission delay of the millimeter wave link transmission test data in S4 is:
Figure DEST_PATH_IMAGE024
wherein
Figure DEST_PATH_IMAGE025
Represents the transmission time delay of the ith millimeter wave link for transmitting the test data,
Figure DEST_PATH_IMAGE026
in order to be able to forward the delay,
Figure DEST_PATH_IMAGE027
and the receiving time delay of the jth communication node of the ith millimeter wave link.
4. The millimeter wave multilink adaptive communication method according to claim 3, wherein the calculation manner of the link performance of the millimeter wave link in the S4 is as follows:
Figure DEST_PATH_IMAGE028
wherein
Figure 880758DEST_PATH_IMAGE008
Indicating the link performance of the ith millimeter-wave link,
Figure DEST_PATH_IMAGE029
for the weight coefficient of the received information strength,
Figure DEST_PATH_IMAGE030
is a weight coefficient of the signal to interference plus noise ratio,
Figure DEST_PATH_IMAGE031
is the weight coefficient of the transmission delay.
5. The millimeter wave multi-link adaptive communication method according to any one of claims 2 to 4, wherein the method for calculating the link channel capacity of the millimeter wave link in S5 is as follows: dividing the millimeter wave link into a plurality of sub-links, respectively calculating the channel capacity of the sub-links, and determining the channel capacity of the link based on the channel capacity of the sub-links.
6. The MMW multilink adaptive communication method according to claim 5, wherein the channel capacity of the sublinks is expressed as
Figure DEST_PATH_IMAGE032
Wherein
Figure DEST_PATH_IMAGE033
Represents the channel capacity of the jth sub-link of the ith millimeter wave link,
Figure DEST_PATH_IMAGE034
the bandwidth of the jth sub-link of the ith millimeter wave link,
Figure DEST_PATH_IMAGE035
the signal to interference plus noise ratio is the signal to interference plus noise ratio of the j' +1 communication node of the ith millimeter wave link; the link channel capacity is expressed as
Figure DEST_PATH_IMAGE036
，
Figure DEST_PATH_IMAGE037
Indicating the link channel capacity of the ith millimeter wave link.
7. An electronic device comprising a memory and a computer program stored thereon, a processor, wherein the processor when executing the computer program implements the millimeter wave multilink adaptive communication method of any one of claims 1 to 6.
8. A storage medium having stored thereon computer-executable instructions that, when loaded and executed by a processor, implement the millimeter wave multilink adaptive communication method of any one of claims 1-6.
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