CN115955720A - High-flux satellite multi-beam bandwidth intelligent allocation system - Google Patents
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Abstract
The invention provides a high-throughput satellite multi-beam bandwidth intelligent allocation system which comprises a bandwidth allocation module, a bandwidth analysis module and a monitoring module, wherein the bandwidth allocation module is used for allocating the working bandwidth of a beam, the bandwidth analysis module is used for analyzing the actual working bandwidth of the beam, and the monitoring module is used for monitoring the actual communication quality of the beam; the system intelligently allocates the wave beam bandwidth according to the real-time communication condition to realize the optimal bandwidth utilization efficiency, and simultaneously, when the bandwidth is allocated, the balance between the efficiency and the stability is realized through the switching of two modes of the bandwidth allocation module.
Description
Technical Field
The invention relates to the field of radio transmission systems, in particular to an intelligent bandwidth allocation system among multiple beams of a high-throughput satellite.
Background
With the increasing demand of people for high-speed and high-quality satellite communication, how to improve the utilization efficiency of satellite bandwidth has become a research hotspot in the field of satellite communication. The traditional satellite communication system usually adopts a fixed beam broadband allocation mode, and the bandwidth cannot be dynamically allocated according to the actual situation, so that the optimal bandwidth utilization efficiency cannot be realized. Meanwhile, with the continuous upgrading of satellite loads and technologies, the number and frequency bands of satellite beams are continuously increased, and the difficulty in intelligent allocation of satellite bandwidth is further increased;
the foregoing discussion of the background art is intended only to facilitate an understanding of the present invention. This discussion is not an acknowledgement or admission that any of the material referred to is part of the common general knowledge.
A number of bandwidth allocation systems have been developed, and through a number of searches and references, it is found that the existing allocation systems are the system disclosed in CN104125006B, and these methods generally include: judging whether the number of tokens in a token bucket corresponding to the current service meets the requirements of the service, and if the number of tokens available currently in the token bucket corresponding to the current service meets the requirements of the service, sending out the relevant data of the service; if the number of the current available tokens in the token bucket corresponding to the current service does not meet the requirement of the service, checking whether other token buckets have enough remaining tokens to decide whether to send the service, if other token buckets have enough remaining tokens, determining to send service related data, and if other token buckets have insufficient remaining tokens, determining not to send any service related data; and when the token bucket is not full, the token bucket is filled with the tokens and the tokens are adjusted. However, the system only adjusts the token, but the adjustment mode is relatively simple, and intelligent allocation and high-stability allocation of bandwidth cannot be realized.
Disclosure of Invention
The invention aims to provide an intelligent bandwidth allocation system among multiple beams of a high-throughput satellite aiming at the defects.
The invention adopts the following technical scheme:
a high-throughput satellite multi-beam bandwidth intelligent allocation system comprises a bandwidth allocation module, a bandwidth analysis module and a monitoring module, wherein the bandwidth allocation module is used for allocating the working bandwidth of a beam, the bandwidth analysis module is used for analyzing the actual working bandwidth of the beam, and the monitoring module is used for monitoring the actual communication quality of the beam;
the working mode of the bandwidth allocation module comprises a direct allocation stage and a stable allocation stage, in the direct allocation stage, the bandwidth allocation module calculates the frequency boundary value of each beam and directly sends the frequency boundary value to the corresponding beam emitter, the bandwidth analysis module records the frequency boundary value, when the recorded data volume reaches a set value, the bandwidth analysis module processes the frequency boundary value to obtain the basic bandwidth range of each beam and simultaneously enters the stable allocation stage, and in the stable allocation stage, the bandwidth allocation module determines the frequency boundary value according to the basic bandwidth range and sends the frequency boundary value to the corresponding beam emitter;
the monitoring module monitors the communication states of all the wave beams, when the communication quality is lower than a threshold value, the bandwidth allocation module restores the working mode to a first stage, and the bandwidth analysis module clears data and restarts recording;
further, the bandwidth allocation module includes a communication demand processing unit, a service load processing unit, and an allocation unit, where the communication demand processing unit processes to obtain a first weight of each beam according to a request of a user, the service load processing unit processes to obtain a second weight of each beam according to an actual service volume of the user, and the allocation unit is configured to allocate a bandwidth to each beam;
further, the allocating unit includes a third information storage, a third computing processor, a timing processor and an allocating controller, the third information storage is used for storing real-time first weight data and second weight data of all beams, the third computing processor is used for computing a bandwidth allocated to each beam, the timing processor sends a signal to the third computing processor at a fixed frequency, and the allocating controller is used for controlling an operating frequency range of the beam transmitter;
the third calculation processor calculates a bandwidth WHz (i) of the ith beam according to:
wherein Hzmax is the maximum working frequency of satellite communication, hzmin is the minimum working frequency of satellite communication, wor i A first weight, wtr, representing the ith beam i A second weight representing the ith beam, N being the number of beams;
further, the communication requirement processing unit includes a first information memory for storing specific requirement data of the user, and a first calculation processor for executing a specific calculation task, where the first calculation processor calculates the communication quality index of the ith beam according to the following formula
：
wherein ,
represents the number of served users for the ith beam, <' > or>
Represents the bit error rate allowed by the jth user>
Denotes the j (th)The packet loss rate allowed by each user, k is a balance coefficient;
the first calculation processor calculates a first absolute weight of the ith beam by the following equation
：
wherein ,
for a maximum transmission rate requested by a user>
For a minimum transmission rate requested by the user>
For the average transmission rate requested by the user>
For cumulative coverage>
Is a radius coefficient;
the first calculation processor calculates a first weight of the ith beam according to the following formula
：
Further, the traffic load processing unit includes a second information memory and a second calculation processor, the second information memory is used for storing the real-time variation of the traffic load, and the second calculation processor executes the calculation task based on the real-time variation curve;
the second calculation processor processes the real-time change curve according to the following formula to obtain a second absolute weight Wta:
wherein ,
representing the real-time variation curve, T 0 Representing the observation period, cp _ max being the maximum value in the profile, cp _ min being the minimum value in the profile, and/or>
、/>
、/>
and />
Respectively a first load parameter, a second load parameter, a third load parameter and a fourth load parameter;
the second calculation processor calculates a second weight of the ith beam according to the following equation
：
wherein ,
representing the second absolute weight of the ith beam.
The beneficial effects obtained by the invention are as follows:
the system processes the data of two aspects of communication demand and service load to obtain two weighted values, distributes the bandwidth of the beam based on the weighted values, improves the effective utilization rate of the bandwidth of the beam, and simultaneously divides the allocation into two stages, wherein the first stage is heavy in efficiency and the second stage is heavy in stability, and the two stages are switched in corresponding time, so that the allocation of the bandwidth is more reasonable.
For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.
Drawings
FIG. 1 is a schematic view of the overall structural framework of the present invention;
FIG. 2 is a schematic diagram of a bandwidth allocation module according to the present invention;
FIG. 3 is a schematic diagram of a configuration of a blending unit according to the present invention;
FIG. 4 is a schematic diagram of a bandwidth analysis module according to the present invention;
FIG. 5 is a flowchart illustrating a first weight obtaining process according to the present invention.
Detailed Description
The following is a description of embodiments of the present invention with reference to specific embodiments, and those skilled in the art will understand the advantages and effects of the present invention from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
The first embodiment is as follows:
the embodiment provides an intelligent bandwidth allocation system for multiple beams of a high-throughput satellite, which, with reference to fig. 1, includes a bandwidth allocation module, a bandwidth analysis module and a monitoring module, where the bandwidth allocation module is configured to allocate a working bandwidth of a beam, the bandwidth analysis module is configured to analyze an actual working bandwidth of the beam, and the monitoring module is configured to monitor an actual communication quality of the beam;
the working mode of the bandwidth allocation module comprises a direct allocation stage and a stable allocation stage, in the direct allocation stage, the bandwidth allocation module calculates the frequency boundary value of each beam and directly sends the frequency boundary value to the corresponding beam emitter, the bandwidth analysis module records the frequency boundary value, when the recorded data volume reaches a set value, the bandwidth analysis module processes the frequency boundary value to obtain the basic bandwidth range of each beam and simultaneously enters the stable allocation stage, and in the stable allocation stage, the bandwidth allocation module determines the frequency boundary value according to the basic bandwidth range and sends the frequency boundary value to the corresponding beam emitter;
the monitoring module monitors the communication states of all the wave beams, when the communication quality is lower than a threshold value, the bandwidth allocation module restores the working mode to a first stage, and the bandwidth analysis module clears data and restarts recording;
the bandwidth allocation module comprises a communication demand processing unit, a service load processing unit and an allocation unit, wherein the communication demand processing unit processes and obtains a first weight of each beam according to the requirement of a user, the service load processing unit processes and obtains a second weight of each beam according to the actual service volume of the user, and the allocation unit is used for allocating bandwidth to each beam;
the allocating unit comprises a third information memory, a third calculating processor, a timing processor and an allocating controller, wherein the third information memory is used for storing real-time first weight data and second weight data of all beams, the third calculating processor is used for calculating the bandwidth allocated by each beam, the timing processor sends signals to the third calculating processor at a fixed frequency, and the allocating controller is used for controlling the working frequency range of the beam transmitter;
the third calculation processor calculates a bandwidth WHz (i) of the ith beam according to:
wherein Hzmax is the maximum working frequency of satellite communication, hzmin is the minimum working frequency of satellite communication, wor i A first weight, wtr, representing the ith beam i Representing a second weight of the ith beam, N being the beamThe number of the particles;
the communication requirement processing unit comprises a first information memory and a first calculation processor, wherein the first information memory is used for storing specific requirement data of a user, the first calculation processor is used for executing specific calculation tasks, and the first calculation processor calculates the communication quality index of the ith beam according to the following formula
：
wherein ,
represents the number of served users for the ith beam, <' > or>
Represents the bit error rate allowed by the jth user>
Representing the allowed packet loss rate of the jth user, wherein k is a balance coefficient;
the first calculation processor calculates a first absolute weight of an ith beam by the following equation
：
wherein ,
for the maximum transmission rate requested by the user>
For a minimum transmission rate requested by the user>
Average for user requirementsTransmission rate>
For cumulative coverage>
Is a radius coefficient;
the first calculation processor calculates a first weight of the ith beam according to the following formula
：
The service load processing unit comprises a second information memory and a second calculation processor, the second information memory is used for storing the real-time variation of the service load, and the second calculation processor executes a calculation task based on a real-time variation curve;
the second calculation processor processes the real-time change curve according to the following formula to obtain a second absolute weight Wta:
wherein ,
representing the real-time variation curve, T 0 Representing an observation period, cp _ max being the maximum value in the variation curve, cp _ min being the minimum value in the variation curve, and/or>
、/>
、/>
and />
Are respectively a first negativeA load parameter, a second load parameter, a third load parameter, and a fourth load parameter;
the second calculation processor calculates a second weight of the ith beam according to the following equation
：
wherein ,
representing the second absolute weight of the ith beam.
Example two:
the embodiment includes all the contents in the first embodiment, and provides an intelligent bandwidth allocation system among multiple beams of a high-throughput satellite, which includes a bandwidth allocation module, a bandwidth analysis module and a monitoring module, wherein the bandwidth allocation module is used for allocating the working bandwidth of the beams, the bandwidth analysis module is used for analyzing the actual working bandwidth of the beams, and the monitoring module is used for monitoring the actual communication quality of the beams;
with reference to fig. 2, the bandwidth allocation module includes a communication requirement processing unit, a service load processing unit, and an allocation unit, where the communication requirement processing unit processes to obtain a first weight of each beam according to a requirement of a user, the service load processing unit processes to obtain a second weight of each beam according to an actual service volume of the user, and the allocation unit is configured to allocate a specific bandwidth to each beam;
the communication requirement processing unit includes a first information memory and a first computation processor, the first information memory is configured to store specific requirement data of a user, the specific requirement data includes a transmission rate, a network coverage, a bit error rate, and a packet loss rate, the first computation processor is configured to perform a specific computation task, and with reference to fig. 5, a process of processing, by the communication requirement processing unit, to obtain a first weight of each beam includes the following steps:
s1, the first calculationThe processor calculates the communication quality index of the ith beam according to the following formula
：
wherein ,
represents the number of served users for the ith beam, <' > or>
Represents the bit error rate allowed by the jth user>
Representing the allowed packet loss rate of the jth user, wherein k is a balance coefficient;
s2, the first computing processor computes a first absolute weight of the ith beam according to the following formula
：
wherein ,
for the maximum transmission rate requested by the user>
For a minimum transmission rate requested by a user>
For the average transmission rate requested by the user>
For cumulative coverage>
Is a radius coefficient;
s3, the first calculating processor calculates the first weight of the ith beam according to the following formula
：
Wherein N is the number of beams;
the service load processing unit comprises a second information memory and a second calculation processor, the second information memory is used for storing the real-time variation of the service load, and the second calculation processor executes calculation tasks based on a real-time variation curve;
for the real-time curve
Means that t has a value in the range->
，T 0 Representing an observation period, in conjunction with a timer>
The second calculation processor processes the real-time variation curve according to the following formula to obtain a second absolute weight Wta, wherein the real-time variation is a real-time variation before the moment-t:
wherein Cp _ max is the maximum value in the variation curve, cp _ min is the minimum value in the variation curve,
、/>
、/>
and />
The first load parameter, the second load parameter, the third load parameter and the fourth load parameter are respectively, and the four load parameters have different dimensions, so that the three parts in the formula can be added in the same dimension;
the four parameters are set and adjusted by a person skilled in the art according to the actual situation;
the second calculation processor calculates a second weight of the ith beam according to the following equation
：
wherein ,
a second absolute weight representing an ith beam;
with reference to fig. 3, the allocating unit includes a third information memory, a third calculating processor, a timing processor and an allocating controller, the third information memory is used for storing real-time first weight data and second weight data of all beams, the third calculating processor is used for calculating a bandwidth allocated to each beam, the timing processor sends a signal to the third calculating processor at a fixed frequency, and the allocating controller is used for controlling an operating frequency range of the beam transmitter;
the third calculation processor calculates a bandwidth WHz (i) of the ith beam according to:
wherein Hzmax is the maximum working frequency of satellite communication, and Hzmin is the minimum working frequency of satellite communication;
the third calculation processor determines a frequency boundary value according to the bandwidth width of each beam, the frequency boundary value of the first beam is Hzmin and Hzmin +WHz (1), the frequency boundary value of the ith beam being
And
；
the system comprises two stages of bandwidth allocation, wherein the first stage is direct allocation, the second stage is stable allocation, and in the first stage, the allocation controller directly sends the frequency boundary value to the corresponding beam transmitter;
with reference to fig. 4, the bandwidth analysis module includes a recording unit and an analysis unit, the recording unit records the working bandwidth range of each beam, the analysis unit processes the working bandwidth range according to the recorded working bandwidth range to obtain the basic bandwidth range of each beam, and the analysis unit determines the basic bandwidth range and the subsequent processing includes the following steps:
s21, sequencing the smaller values of the frequency boundary values from small to large, and recording as Hzmin (j);
s22, sorting the larger values of the frequency boundary values from large to small, and recording as Hzmax (j);
s23, calculating to obtain a basic sequence number j 0 ：
wherein ,
m is the data volume of the working bandwidth range recorded by the recording unit;
s24, mixing Hzmin (j) 0 ) And Hzmax (j) 0 ) As a boundary value of the base bandwidth range;
s25, calculating an idle distance between two adjacent wave beam basic bandwidths, and recording the idle distance as dHz (i), wherein the idle distance represents a difference value between a larger value of the basic bandwidth range of the ith wave beam and a smaller value of the basic bandwidth range of the (i + 1) th wave beam:
in the second stage, the third computing processor processes the bandwidth according to the following formula to obtain the expanded bandwidth
and />
：
The dispatch controller defers the base bandwidth range downward
On the basis of the signal combining and converting>
After obtaining a new boundary value, sending the new boundary value to a corresponding beam emitter, wherein particularly, the first beam does not extend downwards, and the Nth beam does not extend upwards;
distance descriptions for downward and upward growth follow:
[Hz1，Hz2]growing downwards
On the basis of the signal combining and converting>
The resulting bandwidth is [ Hz1- ]>
，Hz2+/>
]；
The monitoring module monitors the communication states of all the beams, when the communication quality is lower than a threshold value, the allocation stage is recovered to the first stage again, data in the recording unit is emptied and recording is restarted, and the threshold value is set by a person skilled in the art.
The disclosure is only a preferred embodiment of the invention, and is not intended to limit the scope of the invention, so that all equivalent technical changes made by using the contents of the specification and the drawings are included in the scope of the invention, and further, the elements thereof can be updated as the technology develops.
Claims (5)
1. The intelligent bandwidth allocation system for the high-throughput satellite multi-beam is characterized by comprising a bandwidth allocation module, a bandwidth analysis module and a monitoring module, wherein the bandwidth allocation module is used for allocating the working bandwidth of a beam, the bandwidth analysis module is used for analyzing the actual working bandwidth of the beam, and the monitoring module is used for monitoring the actual communication quality of the beam;
the working mode of the bandwidth allocation module comprises a direct allocation stage and a stable allocation stage, in the direct allocation stage, the bandwidth allocation module calculates the frequency boundary value of each beam and directly sends the frequency boundary value to the corresponding beam emitter, the bandwidth analysis module records the frequency boundary value, when the recorded data volume reaches a set value, the bandwidth analysis module processes the frequency boundary value to obtain the basic bandwidth range of each beam and simultaneously enters the stable allocation stage, and in the stable allocation stage, the bandwidth allocation module determines the frequency boundary value according to the basic bandwidth range and sends the frequency boundary value to the corresponding beam emitter;
the monitoring module monitors the communication states of all the wave beams, when the communication quality is lower than a threshold value, the bandwidth allocation module restores the working mode to the first stage, and the bandwidth analysis module clears data and starts recording again.
2. The system of claim 1, wherein the bandwidth allocation module comprises a communication requirement processing unit, a traffic load processing unit, and an allocation unit, the communication requirement processing unit processes the communication requirement processing unit to obtain a first weight of each beam according to a requirement of a user, the traffic load processing unit processes the traffic requirement processing unit to obtain a second weight of each beam according to an actual traffic of the user, and the allocation unit is configured to allocate a bandwidth to each beam.
3. The system according to claim 2, wherein the scheduling unit comprises a third information memory, a third calculation processor, a timing processor and a scheduling controller, the third information memory is used for storing the real-time first weight and second weight data of all beams, the third calculation processor is used for calculating the bandwidth allocated to each beam, the timing processor sends signals to the third calculation processor at a fixed frequency, and the scheduling controller is used for controlling the operating frequency range of the beam transmitter;
the third calculation processor calculates a bandwidth WHz (i) of the ith beam according to:
wherein Hzmax is the maximum working frequency of satellite communication, hzmin is the minimum working frequency of satellite communication, wor i A first weight, wtr, representing the ith beam i Representing a second weight of the ith beam, N being the number of beams.
4. The system according to claim 3, wherein the communication requirement processing unit comprises a first information storage and a first computing processor, the first information storage is used for storing specific requirement data of users, the first computing processor is used for performing specific computing tasks, and the first computing processor computes the communication quality index of the ith beam according to the following formula
：
wherein ,
represents the number of served users for the ith beam, <' > or>
Represents the bit error rate allowed by the jth user>
Representing the allowed packet loss rate of the jth user, wherein k is a balance coefficient;
the first calculation processor calculates a first absolute weight of an ith beam by the following equation
：
wherein ,
for the maximum transmission rate requested by the user>
For a minimum transmission rate requested by a user>
For the average transmission rate requested by the user>
For cumulative coverage>
Is a radius coefficient;
the first calculation processor calculates a first weight of the ith beam according to the following formula
：
5. The system according to claim 4, wherein the traffic load processing unit comprises a second information storage and a second computing processor, the second information storage is used for storing the real-time variation of the traffic load, and the second computing processor performs the computing task based on the real-time variation curve;
the second calculation processor processes the real-time change curve according to the following formula to obtain a second absolute weight Wta:
wherein ,
representing the real-time variation curve, T 0 Representing the observation period, cp _ max being the maximum value in the profile, cp _ min being the minimum value in the profile, and/or>
、/>
、/>
and />
Respectively a first load parameter, a second load parameter, a third load parameter and a fourth load parameter;
the second calculation processor calculates a second weight of the ith beam according to the following equation
：
wherein ,
representing the second absolute weight of the ith beam. />
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110222589A1 (en) * | 2010-03-12 | 2011-09-15 | Inmarsat Global Limited | Satellite Beam Monitoring |
| CN103595463A (en) * | 2013-11-28 | 2014-02-19 | 中国科学技术大学 | Satellite beam coverage dynamic adjustment method based on beam service volume |
| US9680559B1 (en) * | 2012-09-05 | 2017-06-13 | RKF Engineering Solutions, LLC | Hierarchichal beam management |
| CN113726374A (en) * | 2021-09-18 | 2021-11-30 | 北方工业大学 | Multi-beam satellite bandwidth allocation method with complementary long and short periods |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110222589A1 (en) * | 2010-03-12 | 2011-09-15 | Inmarsat Global Limited | Satellite Beam Monitoring |
| US9680559B1 (en) * | 2012-09-05 | 2017-06-13 | RKF Engineering Solutions, LLC | Hierarchichal beam management |
| CN103595463A (en) * | 2013-11-28 | 2014-02-19 | 中国科学技术大学 | Satellite beam coverage dynamic adjustment method based on beam service volume |
| CN113726374A (en) * | 2021-09-18 | 2021-11-30 | 北方工业大学 | Multi-beam satellite bandwidth allocation method with complementary long and short periods |
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