Resource reservation-based relay satellite system resource scheduling method

A technology of system resources and relay satellites, applied in the field of satellite communications, can solve problems such as not considering the burst characteristics of space missions

Active Publication Date: 2017-06-13
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Abstract
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  • Application Information

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Problems solved by technology

None of the above researches on reservation-based task scheduling considered the burst characteristics of space tasks, so it is necessary to develop a resource scheduling method for relay satellite systems that can schedule burst services in a timely manner and is simple to calculate.

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  • Resource reservation-based relay satellite system resource scheduling method
  • Resource reservation-based relay satellite system resource scheduling method
  • Resource reservation-based relay satellite system resource scheduling method

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Embodiment Construction

[0019] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0020] In view of the fact that the relay transmission business in the relay satellite system has the characteristics of real-time and large differences in business types, the start time s(i), the deadline e(i), and the traffic volume T(i) of the data transmission and measurement and control business are mainly considered. ), service transmission rate v(i), and priority p(i), this example proposes a resource scheduling method based on resource reservation. The basic idea is that by setting the burst time limit τ, the business whose business deadline is within the burst time limit is classified as burst business, and the burst task is directly scheduled. If it cannot be scheduled, it can be inserted by adjusting the scheduled business. If the task deadline is outside the burst time limit, it is a regular business. When the current ...

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Abstract

The invention discloses a resource reservation-based relay satellite system resource scheduling method. Relay satellite system resource scheduling is carried out under a preset condition. The relay satellite system resource scheduling method specifically comprises the steps of judging whether a to-be-scheduled business set is empty or not; if not, selecting the business with the highest priority from the to-be-scheduled business set and judging whether the selected business is a sudden business or a regular business; if the selected business is the sudden business, scheduling the selected business, if the selected business is the regular business, judging whether the ratio of an available resource set in a total resource set is greater than a preset resource reservation rate or not, if so, scheduling the selected business, or else, carrying out degrading processing on the selected business and further selecting the business with the highest priority; and carrying out resource matching on the scheduled businesses. Through a resource reservation mechanism, the problem of fast scheduling of the sudden business is solved, the resource reservation-based relay satellite system resource scheduling method can be used for a large-scale dynamic resource scheduling problem in a satellite network, the response speed of scheduling is increased and the effective availability of resources is improved.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a resource reservation-based relay satellite system resource scheduling method. Background technique [0002] With the continuous development of technologies such as earth observation, military reconnaissance, and deep space exploration in the aerospace field, the data transmission of relay satellites presents the characteristics of large capacity, high speed, and diverse relay tasks, and the problem of optimal scheduling of satellite resources is becoming more and more prominent. Urgent and important. Among the many measurement and control business requirements, the sudden business with high requirements for fast response accounts for a large proportion. How to guarantee the tracking, measurement and control and data relay requirements of large-scale user spacecraft at the same time. The requirement of fast response poses a challenge to the reasonable and fast r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/26H04W72/12H04B7/185
CPCH04B7/1851H04W28/26H04W72/569
Inventor 邓松峰刘艳丽田文波张宁沈霁郑璧青张震叶恒
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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