Spectrum switching optimization method for cognitive satellite network system
A satellite network and spectrum switching technology, which is applied in the field of spectrum switching optimization of cognitive satellite network systems, can solve problems such as low radio frequency spectrum utilization, achieve the effects of reducing spectrum mobility, improving overall performance, and increasing data transmission efficiency
Active Publication Date: 2021-08-17
CHINA ACADEMY OF SPACE TECHNOLOGY
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[0003] Low radio spectrum utilization due to various constraints
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[0039] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0040] attached figure 1 It illustrates that the technology disclosed in this application is applied to the cognitive satellite network system, and the cognitive satellite network system consists of two satellites, master and slave. Each satellite is a multi-beam broadband satellite, all multi-beam satellites covering the same area, and operating in normal forward mode. The two satellites are connected to different terminals on the ground, which are the terminal 1 of the master sat...
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The invention discloses a spectrum switching optimization method of a cognitive satellite network system, and the cognitive satellite network system comprises a terminal of a slave satellite and a terminal of a master satellite. The method comprises the following steps: the terminal of the slave satellite obtains all spectrum wireless channel resource blocks which are not used by the terminal of the master satellite through spectrum sensing so as to obtain spectrum vulnerabilities; obtaining the occupancy rate of the frequency spectrum wireless channel resource block occupied by the terminal of the main satellite; the terminal of the slave satellite determines the probability that the spectrum vulnerability is not occupied by the terminal of the master satellite according to the occupancy rate of the spectrum wireless channel resource block; the terminal of the slave satellite determines expected data transmission and switching time corresponding to the frequency spectrum vulnerability according to the probability that the frequency spectrum vulnerability is not occupied by the terminal of the master satellite; the terminal of the slave satellite determines a target spectrum vulnerability according to the expected data transmission and switching time of all spectrum vulnerabilities; and the terminal of the slave satellite performs data transmission through the target spectrum vulnerability, so that the spectrum mobility is reduced, the data transmission efficiency is improved. The system performance of a cognitive satellite network is improved.
Description
technical field [0001] The present application relates to the technical field of radio networks, and in particular to a spectrum switching optimization method for a cognitive satellite network system. Background technique [0002] The rapid expansion of wireless Internet services has led to an exponential increase in the number of wireless communication system users, and this rapid growth requires more spectrum and continuous bandwidth. The current spectrum management lacks flexibility. In order to meet the ever-growing demand for spectrum, new regulatory methods and technical means are needed for spectrum allocation, utilization and management to achieve more flexible spectrum sharing and dynamic spectrum access to meet the growing spectrum crisis. need. [0003] Due to various constraints, radio spectrum utilization is low. In order to improve the utilization of radio spectrum, the cognitive satellite network system is an effective way to solve the low utilization of rad...
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IPC IPC(8): H04W24/02H04W72/08H04W72/04H04B7/185H04B17/382H04W72/54
CPCH04W24/02H04W72/0453H04B7/1851H04B17/382H04W72/542
Inventor 王春锋
Owner CHINA ACADEMY OF SPACE TECHNOLOGY