CN112968726A - Satellite bandwidth self-adaptive distribution method based on broadband margin analysis - Google Patents
Satellite bandwidth self-adaptive distribution method based on broadband margin analysis Download PDFInfo
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- CN112968726A CN112968726A CN202110124214.XA CN202110124214A CN112968726A CN 112968726 A CN112968726 A CN 112968726A CN 202110124214 A CN202110124214 A CN 202110124214A CN 112968726 A CN112968726 A CN 112968726A
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- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
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Abstract
The invention relates to the field of multi-beam satellite communication networks, and discloses a satellite bandwidth self-adaptive distribution method based on broadband margin analysis, which comprises the following steps: s1, collecting the detailed information of the new service application, judging whether the new application link-building object is accessed to the network, and submitting the new service application if the new application link-building object is accessed to the network. And S2, detecting whether the beam coverage area of the new service application has residual bandwidth based on the probability threshold, and receiving the application if the beam coverage area meets the requirement. S3, if the coverage area of the beam has no available bandwidth, it is detected whether there is a potential bandwidth that can be released in advance. And S4, further judging whether the residual bandwidth in the coverage area of the beam meets the requirement, if so, adaptively adjusting the current residual bandwidth to improve the service quality of the whole multi-beam satellite communication network system. A satellite bandwidth self-adaptive distribution method based on broadband margin analysis solves the problems that the prior art cannot effectively and dynamically distribute satellite resources, so that the resource utilization rate is low and the resource allocation is unreasonable.
Description
Technical Field
The present invention relates to the field of multibeam satellite communication networks, and more particularly, to dynamic bandwidth allocation.
Background
Because the multi-beam satellite communication network system has a wide application field, and the use of satellite bandwidth resources is an important part of the system, with the increase of new service applications, the shortage of bandwidth resources and the waste of bandwidth resources also become problems, and in order to allocate bandwidth, the efficiency of the satellite communication network is notified, and a satellite bandwidth adaptive allocation method based on broadband margin analysis also gets a wide attention in the industry.
In a multi-beam satellite communication network system, each beam covers a particular range, and within the beam coverage range, satellite communication users have the characteristic of mobile handoff, and the communication needs are likely to be aggregated. However, the limitation of the bandwidth of the satellite communication network limits the requirement of new service bandwidth, and an improved and optimized bandwidth allocation method is urgently needed, so that a satellite bandwidth adaptive allocation method based on broadband margin analysis is provided.
Disclosure of Invention
The invention aims to provide a satellite bandwidth self-adaptive distribution method based on broadband margin analysis, which can meet the new bandwidth application requirement of a user by accurately estimating the residual bandwidth in the coverage area of the beam and distributing the residual bandwidth in the coverage area of the beam in a self-adaptive manner.
The technical purpose of the invention is realized by the following technical scheme: a satellite bandwidth self-adaptive distribution method based on broadband margin analysis comprises the following steps:
firstly, collecting detailed information of a new service application, judging whether a new application link building object is accessed to the network or not, and submitting the new service application if the new application link building object is accessed to the network. And then detecting whether the beam coverage area where the new service application occurs has residual bandwidth or not based on a probability threshold, and receiving the application if the coverage area meets the requirement. And then if the coverage area of the beam has no available bandwidth, detecting whether potential bandwidth can be released in advance. And finally, further judging whether the residual bandwidth in the coverage area of the wave beam meets the requirement, if so, adaptively adjusting the current residual bandwidth to improve the service quality of the whole multi-beam satellite communication network system.
Optionally, detailed information of the new service application is collected, whether the new application link establishment object is already connected to the network is judged, and if yes, the new service application is submitted, which is characterized in that: the basic information of the first collected new service application includes task type, task grade, start time, end time, matching of the network system, service destination ID and required bandwidth. And then inquiring the network access condition of the service target ID through a narrow-band control channel of the multi-beam satellite communication network system, and judging and submitting the application if the target ID is accessed to the network.
Optionally, whether a beam coverage area where a new service application occurs has a residual bandwidth is detected based on a probability threshold, where the method is characterized in that:
setting the disconnection rate of the service link being executed as
The disconnection rate is the expected disconnection rate of the system, and the value is given according to the design index of the multi-beam satellite communication network. At this time, two are set to be lower
Is judged threshold
And
therefore, the relationship between the three judgment threshold values is as follows
Is provided with
Is the probability of a service outage of the system,
the probability value of the bandwidth is increased for the greater probability,
the probability value of the bandwidth is reduced for small probabilities. Then there are:
，
。
if it satisfies
If the current beam coverage area has good disconnection rate, the method is used
The probability of (c) controls the remaining bandwidth, and the reduced bandwidth can be used to allocate to new service applications.
Optionally, further determining whether the remaining bandwidth in the coverage area of the current beam meets the requirement, wherein the method is characterized in that:
the communication quality of the ith link in n communicating service links in the coverage area of the current beam is used as a function
Is described, wherein
And n links occupy the set of bandwidth
To describe, then
Wherein
If the bandwidth occupied by the ith service link is B, the total bandwidth is
. When the bandwidth resources in the coverage range of the wave beam are sufficient, the request bandwidth is allocated for a new service link establishment application; when the service leaves or terminates, the link-building bandwidth is released. When the network bandwidth resource is insufficient, the quality of all the established links in the coverage area of the beam is degraded, that is, the communication quality function of all the links which are connected is reduced to the same value (if a certain service link is in the state of the minimum transmission bandwidth, the degradation is not carried out) At this time, if the communication quality of any two paths of the same bandwidth in the current beam coverage should be consistent, then:
at this time
Obtained bandwidth
Reserving for new service application, and making the quality function value of new service not lower than that of already established link, if new service applies bandwidth
Then, the remaining bandwidth in the coverage area of the beam can be judged to meet the requirement, otherwise, the remaining bandwidth in the coverage area of the beam can not meet the requirement.
Optionally, if the remaining bandwidth margin meets the requirement, adaptively adjusting the current remaining bandwidth to improve the service quality of the whole multi-beam satellite communication network system, wherein the method comprises the following steps:
judging whether to adaptively adjust the bandwidth or not by the adaptive adjustment coefficient D
Is the remaining bandwidth at time t.
Is the bandwidth actually required for the application of the new traffic link at time t. The adjustment factor D can be formulated as:
to describe, if the value of the adjustment coefficient D is 0, adaptive adjustment is not needed, and if D >0, adaptive adjustment of the bandwidth is needed.
In conclusion, the invention has the following beneficial effects: the satellite bandwidth self-adaptive distribution method based on the broadband margin analysis can be utilized, so that the utilization rate of the bandwidth is maximized.
Drawings
FIG. 1 is a flow chart of a method for adaptively allocating satellite bandwidth based on broadband headroom analysis;
fig. 2 is a schematic diagram of a beam coverage area.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The technical purpose of the invention is realized by the following technical scheme: a satellite bandwidth adaptive allocation method based on broadband margin analysis, as shown in fig. 1, includes the following steps:
firstly, collecting detailed information of a new service application, judging whether a new application link building object is accessed to the network or not, and submitting the new service application if the new application link building object is accessed to the network. And then detecting whether the beam coverage area where the new service application occurs has residual bandwidth or not based on a probability threshold, and receiving the application if the coverage area meets the requirement. And then if the coverage area of the beam has no available bandwidth, detecting whether potential bandwidth can be released in advance. And finally, further judging whether the residual bandwidth in the coverage area of the wave beam meets the requirement, if so, adaptively adjusting the current residual bandwidth to improve the service quality of the whole multi-beam satellite communication network system.
Optionally, detailed information of the new service application is collected, whether the new application link establishment object is already connected to the network is judged, and if yes, the new service application is submitted, which is characterized in that: the basic information of the first collected new service application includes task type, task grade, start time, end time, matching of the network system, service destination ID and required bandwidth. And then inquiring the network access condition of the service target ID through a narrow-band control channel of the multi-beam satellite communication network system, and judging and submitting the application if the target ID is accessed to the network.
Optionally, as shown in fig. 2, detecting whether there is residual bandwidth in a beam coverage area where a new service application occurs based on a probability threshold, where the method is characterized in that:
setting the disconnection rate of the service link being executed as
The disconnection rate is the expected disconnection rate of the system, and the value is given according to the design index of the multi-beam satellite communication network. At this time, two are set to be lower
Is judged threshold
And
therefore, the relationship between the three judgment threshold values is as follows
Is provided with
Is the probability of a service outage of the system,
the probability value of the bandwidth is increased for the greater probability,
the probability value of the bandwidth is reduced for small probabilities. Then there are:
，
。
if it satisfies
If the current beam coverage area has good disconnection rate, the method is used
The probability of (c) controls the remaining bandwidth, and the reduced bandwidth can be used to allocate to new service applications.
Optionally, further determining whether the remaining bandwidth in the coverage area of the current beam meets the requirement, wherein the method is characterized in that:
the communication quality of the ith link in n communicating service links in the coverage area of the current beam is used as a function
Is described, wherein
And n links occupy the set of bandwidth
To describe, then
Wherein
If the bandwidth occupied by the ith service link is B, the total bandwidth is
. When the bandwidth resources in the coverage range of the wave beam are sufficient, the request bandwidth is allocated for a new service link establishment application; when the service leaves or terminates, the link-building bandwidth is released. When the network bandwidth resource is insufficient, performing quality degradation on all established links in the coverage area of the beam, that is, reducing the communication quality function of all the links being connected to the same value (if a certain service link is already in the minimum transmission bandwidth state, the link is not degraded), at this time, the communication quality of any two paths of the same bandwidth in the coverage area of the current beam should be consistent, and then:
at this time
Obtained bandwidth
Reserving for new service application, and making the quality function value of new service not lower than that of already established link, if new service applies bandwidth
Then, the remaining bandwidth in the coverage area of the beam can be judged to meet the requirement, otherwise, the remaining bandwidth in the coverage area of the beam can not meet the requirement.
Optionally, if the remaining bandwidth margin meets the requirement, adaptively adjusting the current remaining bandwidth to improve the service quality of the whole multi-beam satellite communication network system, wherein the method comprises the following steps:
judging whether to adaptively adjust the bandwidth or not by the adaptive adjustment coefficient D
Is the remaining bandwidth at time t.
Is the bandwidth actually required for the application of the new traffic link at time t. The adjustment factor D can be formulated as:
to describe, if the value of the adjustment coefficient D is 0, adaptive adjustment is not needed, and if D >0, adaptive adjustment of the bandwidth is needed.
In conclusion, the invention has the following beneficial effects: the satellite bandwidth self-adaptive distribution method based on the broadband margin analysis can be utilized, so that the utilization rate of the bandwidth is maximized.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. A satellite bandwidth self-adaptive distribution method based on broadband margin analysis comprises the following steps:
s1, collecting the detailed information of the new service application, judging whether the object of the new application link establishment is accessed to the network, and submitting the new service application if the object of the new application link establishment is accessed to the network;
s2, detecting whether the beam coverage area of the new service application has residual bandwidth based on the probability threshold, and receiving the application if the coverage area meets the requirement;
s3, if the coverage area of the beam has no available bandwidth, detecting whether potential bandwidth can be released in advance;
and S4, further judging whether the residual bandwidth in the coverage area of the beam meets the requirement, if so, adaptively adjusting the current residual bandwidth to improve the service quality of the whole multi-beam satellite communication network system.
2. The method as claimed in claim 1, wherein the detailed information of the new service application is collected, whether the new application link-building object is already accessed to the network is judged, and if yes, the new service application is submitted, and the method comprises the following steps:
s11, collecting basic information of new service application, including task type, task grade, start time, end time, matching of affiliated network system, service purpose ID, and required bandwidth;
s12, inquiring the network access condition of the service target ID through the narrow band control channel of the multi-beam satellite communication network system, and if the target ID is already accessed, judging to submit the application.
3. The method of claim 1, wherein detecting whether there is any remaining bandwidth in the coverage area of the beam where the new service application occurs based on a probability threshold is characterized by:
setting the disconnection rate of the service link being executed as
Should be brokenThe open rate is the expected offline rate of the system, and the value is given according to the design index of the multi-beam satellite communication network;
at this time, two are set to be lower
Is judged threshold
And
therefore, the relationship between the three judgment threshold values is as follows
Is provided with
Is the probability of a service outage of the system,
the probability value of the bandwidth is increased for the greater probability,
reducing the probability value of the bandwidth for the small probability;
then there are:
，
；
if it satisfies
If the current beam coverage area has good disconnection rate, the method is used
The probability of (c) controls the remaining bandwidth, and the reduced bandwidth can be used to allocate to new service applications.
4. The method of claim 1, further determining whether the remaining bandwidth in the coverage area of the beam meets the requirement, wherein:
the communication quality of the ith link in n communicating service links in the coverage area of the current beam is used as a function
Is described, wherein
And n links occupy the set of bandwidth
To describe, then
Wherein
If the bandwidth occupied by the ith service link is B, the total bandwidth is
(ii) a When the bandwidth resources in the coverage range of the wave beam are sufficient, the request bandwidth is allocated for a new service link establishment application; when the service leaves or terminates, releasing the link establishment bandwidth;
when the network bandwidth resource is insufficient, the quality degradation is carried out on all the established services of the beam coverage range, namely, the communication quality function of all the links which are connected is reduced to the same value (if a certain service link is in the state of the minimum transmission bandwidth, the degradation is not carried out), at the moment, the current beam coverage range is free from two paths of access with the same bandwidthThe signal quality should be consistent, then:
at this time
Obtained bandwidth
Reserving for new service application, and making the quality function value of new service not lower than that of already established link, if new service applies bandwidth
Then, the remaining bandwidth in the coverage area of the beam can be judged to meet the requirement, otherwise, the remaining bandwidth in the coverage area of the beam can not meet the requirement.
5. The method according to claim 1, wherein if the residual bandwidth margin meets the requirement, the current residual bandwidth is adaptively adjusted to improve the service quality of the whole multibeam satellite communication network system, and the method is characterized in that:
judging whether to adaptively adjust the bandwidth or not by the adaptive adjustment coefficient D
If the residual bandwidth at the time t is the actually required bandwidth for applying for a new service link at the time t, the adjustment coefficient D may be represented by the following formula:
to describe, if the value of the adjustment coefficient D is 0, adaptive adjustment is not needed, and if D >0, adaptive adjustment of the bandwidth is needed.
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Cited By (4)
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| CN114499627A (en) * | 2021-12-20 | 2022-05-13 | 中国电信股份有限公司卫星通信分公司 | Content multicast system and method based on terminal election mode under satellite multi-beam |
| CN114679393A (en) * | 2022-05-30 | 2022-06-28 | 凯睿星通信息科技(南京)股份有限公司 | Satellite internet bandwidth control method, system and device based on flow analysis |
| CN114745273A (en) * | 2022-06-10 | 2022-07-12 | 成都星联芯通科技有限公司 | TCP acceleration proxy method, device, satellite ground station and readable storage medium |
| CN114844556A (en) * | 2022-04-26 | 2022-08-02 | 武昌理工学院 | Remote sensing information de-differentiation transmission method based on functional satellite load rate |
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| CN114745273A (en) * | 2022-06-10 | 2022-07-12 | 成都星联芯通科技有限公司 | TCP acceleration proxy method, device, satellite ground station and readable storage medium |
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