CN115955720B - Intelligent bandwidth allocation system between high-flux satellite multiple beams - Google Patents
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Abstract
The invention provides a high-flux 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 beam bandwidth according to the real-time communication condition to realize optimal bandwidth utilization efficiency, and meanwhile, when the bandwidth is allocated, the balance between efficiency and 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 a high-flux satellite multi-beam bandwidth intelligent allocation system.
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 conventional satellite communication system generally adopts a fixed beam broadband allocation mode, and cannot dynamically allocate bandwidth according to actual conditions, so that optimal bandwidth utilization efficiency cannot be realized. Meanwhile, with the continuous upgrading of satellite loads and technologies, the number of satellite beams and frequency bands are continuously increased, so that the difficulty of intelligent allocation of satellite bandwidths is further increased;
the foregoing discussion of the background art is intended to facilitate an understanding of the present invention only. This discussion is not an admission or admission that any of the material referred to was common general knowledge.
A number of bandwidth allocation systems have been developed and, through extensive search and reference, existing allocation systems have been found to have a system as disclosed in publication No. CN104125006B, which generally includes: judging whether the number of tokens in a token bucket corresponding to the current service meets the service requirement, and if the number of currently available tokens in the token bucket corresponding to the current service meets the service requirement, sending out the service related data; if the number of tokens currently available in the token bucket corresponding to the current service is not in full of the requirements of the sufficient service, checking whether other token buckets have enough residual tokens to decide whether to send the service, if the other token buckets have enough residual tokens, determining to send service related data, and if the other token buckets have not enough residual tokens, determining not to send any service related data; when the token bucket is not full, the token bucket is filled with tokens, and the tokens are adjusted. However, the system only adjusts the token, but the adjustment mode is simpler, and intelligent allocation and high-stability allocation of the bandwidth cannot be realized.
Disclosure of Invention
The invention aims to provide a high-flux intelligent allocation system for bandwidth among multiple beams of a satellite, aiming at the defects.
The invention adopts the following technical scheme:
the intelligent bandwidth 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 wave beam and directly sends the frequency boundary value to a corresponding wave beam transmitter, the bandwidth analysis module records the frequency boundary value, and when the recorded data quantity reaches a set value, the bandwidth analysis module processes the basic bandwidth range of each wave beam and 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 wave beam transmitter;
the monitoring module monitors the communication states of all 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 the data and restarts recording;
further, 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 is used for processing to obtain a first weight of each beam according to the requirement of a user, the service load processing unit is used for processing to obtain 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;
further, the allocation unit comprises a third information memory, a third calculation processor, a timing processor and an allocation controller, wherein the third information memory is used for storing first weight data and second weight data of all beams in real time, the third calculation processor is used for calculating bandwidth obtained by allocation of each beam, the timing processor sends signals to the third calculation processor at fixed frequency, and the allocation controller is used for controlling the working frequency range of a beam transmitter;
the third calculation processor calculates the bandwidth width WHz (i) of the ith beam according to the following formula:
wherein Hzmax is the maximum working frequency of satellite communication, hzmin is the minimum working frequency of satellite communication, and Wor i Representing the first weight of the ith beam, wtr i A second weight representing an ith beam, N being the number of beams;
further, the communication requirement processing unit comprises a first information memory and a first calculation processor, 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 wave beam through the following formula
：
wherein ,
representing the number of service users of the ith beam, < +.>
Indicating the error rate allowed by the jth user, < >>
The packet loss rate allowed by the jth user is represented, and k is a balance coefficient;
the first calculation processor calculates a first absolute weight of the ith beam by
：
wherein ,
maximum transmission rate required for the user, +.>
Minimum transmission rate required for the user, +.>
For the average transmission rate required by the user, +.>
For accumulating coverage +.>
Is a radius coefficient;
the first calculation processor calculates a first weight of an ith beam according to the following formula
：
Further, the service load processing unit comprises a second information memory and a second calculation processor, wherein the second information memory is used for storing real-time variation of service load capacity, and the second calculation processor executes calculation tasks based on a real-time variation curve;
the second calculation processor processes the real-time change curve according to the following steps of:
wherein ,
representing a real-time change curve, T 0 Indicating the observation period, cp_max is the maximum value in the curve, cp_min is the minimum value in the curve,/->
、/>
、/>
and />
The first load parameter, the second load parameter, the third load parameter and the fourth load parameter are respectively;
the second calculation processor calculates a second weight of the ith beam according to the following formula
：
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 in two aspects of communication demand and service load to obtain two weight values, distributes the bandwidth of the wave beam based on the weight values, improves the effective utilization rate of the bandwidth of the wave beam, divides the distribution into two stages, and meanwhile, the first stage is biased in efficiency, the second stage is biased in stability, and switches the two stages in corresponding time, so that the distribution of the bandwidth is more reasonable.
For a further understanding of the nature and the technical aspects of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are provided for purposes of reference only and are not intended to limit the invention.
Drawings
FIG. 1 is a schematic diagram 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 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 schematic diagram of a first weight obtaining process according to the present invention.
Detailed Description
The following embodiments of the present invention are described in terms of specific examples, and those skilled in the art will appreciate the advantages and effects of the present invention from the disclosure herein. The invention is capable of other and different embodiments and its several details are capable of modification and variation in various respects, all without departing from the spirit of the present invention. The drawings of the present invention are merely schematic illustrations, and are not intended to be drawn to actual dimensions. The following embodiments will further illustrate the related art content of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.
Embodiment one:
the embodiment provides a bandwidth intelligent allocation system among high-flux satellites, which is combined with fig. 1, and 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 wave beam and directly sends the frequency boundary value to a corresponding wave beam transmitter, the bandwidth analysis module records the frequency boundary value, and when the recorded data quantity reaches a set value, the bandwidth analysis module processes the basic bandwidth range of each wave beam and 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 wave beam transmitter;
the monitoring module monitors the communication states of all 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 the 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 is used for processing to obtain a first weight of each beam according to the requirement of a user, the service load processing unit is used for processing to obtain 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 allocation unit comprises a third information memory, a third calculation processor, a timing processor and an allocation controller, wherein the third information memory is used for storing real-time first weight data and real-time second weight data of all beams, the third calculation processor is used for calculating bandwidth obtained by allocation of each beam, the timing processor sends signals to the third calculation processor at fixed frequency, and the allocation controller is used for controlling the working frequency range of a beam transmitter;
the third calculation processor calculates the bandwidth width WHz (i) of the ith beam according to the following formula:
wherein Hzmax is the maximum working frequency of satellite communication, hzmin is the minimum working frequency of satellite communication, and Wor i Representing the first weight of the ith beam, wtr i A second weight representing an ith beam, N being the number of beams;
the communication demand processing unit comprises a first information memory and a first calculation processor, wherein the first information memory is used for storing specific demand 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 an ith wave beam through the following formula
：
wherein ,
indicating the number of service users for the i-th beam,/>
indicating the error rate allowed by the jth user, < >>
The packet loss rate allowed by the jth user is represented, and k is a balance coefficient;
the first calculation processor calculates a first absolute weight of the ith beam by
：
wherein ,
maximum transmission rate required for the user, +.>
Minimum transmission rate required for the user, +.>
For the average transmission rate required by the user, +.>
For accumulating coverage +.>
Is a radius coefficient;
the first calculation processor calculates a first weight of an ith beam according to the following formula
：
The service load processing unit comprises a second information memory and a second calculation processor, wherein the second information memory is used for storing the real-time variation of service load capacity, and the second calculation processor executes calculation tasks based on the real-time variation curve;
the second calculation processor processes the real-time change curve according to the following steps of:
wherein ,
representing a real-time change curve, T 0 Indicating the observation period, cp_max is the maximum value in the curve, cp_min is the minimum value in the curve,/->
、/>
、/>
and />
The first load parameter, the second load parameter, the third load parameter and the fourth load parameter are respectively;
the second calculation processor calculates a second weight of the ith beam according to the following formula
：
wherein ,
representing the second absolute weight of the ith beam.
Embodiment two:
the embodiment includes all the matters in the first embodiment, and provides a high-flux 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;
referring to fig. 2, the bandwidth allocation module includes a communication demand processing unit, a traffic 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 requirement of a user, the traffic load processing unit processes 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 specific bandwidth to each beam;
the communication demand processing unit comprises a first information memory and a first computing processor, the first information memory is used for storing specific demand data of a user, the specific demand data comprises a transmission rate, a network coverage area, an error rate and a packet loss rate, the first computing processor is used for executing specific computing tasks, and the process of processing the first weight of each wave beam by the communication demand processing unit comprises the following steps of:
s1, the first calculation processor calculates the communication quality index of the ith wave beam through the following formula
：
wherein ,
representing the number of service users of the ith beam, < +.>
Indicating the error rate allowed by the jth user, < >>
The packet loss rate allowed by the jth user is represented, and k is a balance coefficient;
s2, the first calculation processor calculates a first absolute weight of the ith wave beam through the following formula
：
wherein ,
maximum transmission rate required for the user, +.>
Minimum transmission rate required for the user, +.>
For the average transmission rate required by the user, +.>
For accumulating coverage +.>
Is a radius coefficient;
s3, the first calculation processor calculates a first weight of the ith wave 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, wherein the second information memory is used for storing the real-time variation of service load capacity, and the second calculation processor executes calculation tasks based on the real-time variation curve;
for said real-time change curve
Indicating that t has a value in the range +.>
，T 0 Indicating the length of observation +.>
For the real-time variation before the-t moment, the second calculation processor processes the real-time variation curve according to the following formula to obtain a second absolute weight Wta:
wherein Cp_max is the maximum value in the change curve, cp_min is the minimum value in the change 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 three parts in the above formula can be added in the same dimension;
the four parameters are set and adjusted by a person skilled in the art according to actual conditions;
the second calculation processor calculates a second weight of the ith beam according to the following formula
：
wherein ,
a second absolute weight representing an ith beam;
referring to fig. 3, the allocating unit includes a third information memory, a third calculation processor, a timing processor and an allocating controller, where the third information memory is used to store the first weight and the second weight data of all the beams in real time, the third calculation processor is used to calculate the bandwidth allocated to each beam, the timing processor sends a signal to the third calculation processor at a fixed frequency, and the allocating controller is used to control the working frequency range of the beam transmitter;
the third calculation processor calculates the bandwidth width WHz (i) of the ith beam according to the following formula:
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 frequency boundary values according to the bandwidth width of each beam, wherein the frequency boundary values of the first beam are Hzmin and Hzmin+ WHz (1), and the frequency boundary value of the ith beam is
And
；
the bandwidth allocation of the system comprises two stages, wherein the first stage is direct allocation and the second stage is stable allocation, and the allocation controller directly sends the frequency boundary value to the corresponding beam transmitter in the first stage;
referring to fig. 4, the bandwidth analysis module includes a recording unit and an analysis unit, the recording unit records a working bandwidth range of each beam, the analysis unit processes the working bandwidth range recorded to obtain a basic bandwidth range of each beam, and the analysis unit determines the basic bandwidth range and the subsequent processing procedure includes the following steps:
s21, sequencing smaller values of the frequency boundary values from small to large, and marking the smaller values as Hzmin (j);
s22, sorting the larger value of the frequency boundary value from large to small, and marking as Hzmax (j);
s23, calculating to obtain a basic sequence number j 0 ：
wherein ,
the m is the data size of the working bandwidth range recorded by the recording unit;
s24, hzmin (j) 0 ) And Hzmax (j) 0 ) As a boundary value for the underlying bandwidth range;
s25, calculating the idle distance between the basic bandwidths of two adjacent beams, and recording the idle distance as dHz (i), wherein the idle distance represents the difference between a larger value of the basic bandwidth range of the ith beam and a smaller value of the basic bandwidth range of the (i+1) th beam:
in the second stage, the third computing processor performs processing according to the following formula to obtain an expanded bandwidth
and />
：
The deployment controller is used for providing a foundationThe bandwidth range extends downwards
Upward extending->
After obtaining a new boundary value, sending the new boundary value to a corresponding beam transmitter, wherein particularly, the first beam does not extend downwards and the Nth beam does not extend upwards;
the following describes the distance between downward and upward delay:
[Hz1，Hz2]extend downwards
Upward extending->
The bandwidth obtained is [ Hz1- ]>
，Hz2+/>
]；
The monitoring module monitors the communication state of all the beams, and when the communication quality is lower than a threshold value, the allocation stage is restored to the first stage, the data in the recording unit is emptied to restart recording, and the threshold value is set by a person skilled in the art.
The foregoing disclosure is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention, so that all equivalent technical changes made by applying the description of the present invention and the accompanying drawings are included in the scope of the present invention, and in addition, elements in the present invention can be updated as the technology develops.
Claims (3)
1. The intelligent bandwidth allocation system between the high-flux satellite multi-beams 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 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;
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 wave beam and directly sends the frequency boundary value to a corresponding wave beam transmitter, the bandwidth analysis module records the frequency boundary value, and when the recorded data quantity reaches a set value, the bandwidth analysis module processes the basic bandwidth range of each wave beam and 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 wave beam transmitter; the bandwidth allocation of the system comprises two stages, wherein the first stage is the direct allocation stage, and the second stage is the stable allocation stage;
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 is used for processing to obtain a first weight of each beam according to the requirement of a user, the service load processing unit is used for processing to obtain 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 monitoring module monitors the communication states of all 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 the data and restarts recording;
the allocation unit comprises a third information memory, a third calculation processor, a timing processor and an allocation controller, wherein the third information memory is used for storing real-time first weight data and real-time second weight data of all beams, the third calculation processor is used for calculating bandwidth obtained by allocation of each beam, the timing processor sends signals to the third calculation processor at fixed frequency, and the allocation controller is used for controlling the working frequency range of a beam transmitter;
the third calculation processor calculates the bandwidth width WHz (i) of the ith beam according to the following formula:
wherein Hzmax is the maximum working frequency of satellite communication, hzmin is the minimum working frequency of satellite communication, and Wor i Representing the first weight of the ith beam, wtr i A second weight representing an ith beam, N being the number of beams;
the bandwidth analysis module comprises 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 recorded to obtain the basic bandwidth range of each beam, and the analysis unit determines the basic bandwidth range and the subsequent processing process comprises the following steps:
s21, sequencing smaller values of the frequency boundary values from small to large, and marking the smaller values as Hzmin (j);
s22, sorting the larger value of the frequency boundary value from large to small, and marking as Hzmax (j);
s23, calculating to obtain a basic sequence number j 0 ：
wherein ,
the m is the data size of the working bandwidth range recorded by the recording unit;
s24, hzmin (j) 0 ) And Hzmax (j) 0 ) As a boundary value for the underlying bandwidth range;
s25, calculating the idle distance between the basic bandwidths of two adjacent beams, and recording the idle distance as dHz (i), wherein the idle distance represents the difference between a larger value of the basic bandwidth range of the ith beam and a smaller value of the basic bandwidth range of the (i+1) th beam:
in the second stage, the third computing processor performs processing according to the following formula to obtain an expanded bandwidth
and />
：/>
The allocation controller extends the basic bandwidth range downwards
Upward extending->
After obtaining a new boundary value, sending the new boundary value to a corresponding beam transmitter, wherein particularly, the first beam does not extend downwards and the Nth beam does not extend upwards;
the following describes the distance between downward and upward delay:
[Hz1，Hz2]extend downwards
Upward extending->
The bandwidth obtained is [ Hz1- ]>
，Hz2+/>
]。
2. The intelligent high-throughput satellite multi-beam bandwidth allocation system according to claim 1, wherein said communication demand processing unit comprises a first information memoryAnd a first calculation processor for storing specific demand data of the user, the first calculation processor for performing specific calculation tasks, the first calculation processor calculating a communication quality index of an ith beam by
：
wherein ,
representing the number of service users of the ith beam, < +.>
Indicating the error rate allowed by the jth user, < >>
The packet loss rate allowed by the jth user is represented, and k is a balance coefficient;
the first calculation processor calculates a first absolute weight of the ith beam by
：
wherein ,
maximum transmission rate required for the user, +.>
Minimum transmission rate required for the user, +.>
For the average transmission rate required by the user, +.>
For accumulating coverage +.>
Is a radius coefficient;
the first calculation processor calculates a first weight of an ith beam according to the following formula
：
3. The intelligent high-throughput satellite multi-beam bandwidth allocation system according to claim 2, wherein the traffic load processing unit comprises a second information memory and a second calculation processor, the second information memory is used for storing real-time variation of traffic load, and the second calculation processor performs calculation tasks based on the real-time variation curve;
the second calculation processor processes the real-time change curve according to the following steps of:
wherein ,
representing a real-time change curve, T 0 Indicating the observation period, cp_max is the maximum value in the curve, cp_min is the minimum value in the curve,/->
、/>
、/>
and />
The first load parameter, the second load parameter, the third load parameter and the fourth load parameter are respectively;
the second calculation processor calculates a second weight of the ith beam according to the following formula
：/>
wherein ,
representing the second absolute weight of the ith beam. />
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