Anti-collision method for satellite communication multi-user concurrent access based on ideal point

Abstract

The invention discloses an ideal point-based multi-user concurrent access anti-collision method for satellite communication, which divides users applying for access to the network into user groups, constructs a network access ranging model with the user group as a unit, and constructs a multi-objective optimization problem. Then, based on the Pareto evolutionary algorithm, the multi-objective optimization problem is solved, and the solution set is used to form a plan database; the actual network users, time requirements, channel number restrictions and other conditions are determined, and the negotiation curve between the network time and occupied channels is constructed based on the Logistic model and input. Pre-plan library; obtain ideal points that meet actual networking requirements, perform user grouping, arrival rate setting, ranging channel configuration, etc. The networking time in the case of concurrent access has the advantages of strong versatility and easy implementation.

Description

technical field [0001] The invention relates to the technical field of satellite communication systems, in particular to the field of satellite communication multi-user access. Background technique [0002] The MF-TDMA (Multi-Frequency Time Division Multiple Access) satellite communication system has the unique ability to quickly build a large-scale communication network in complex environments (remote areas, forests, earthquakes, floods, mudslides, and seas, etc.), so in the current wireless communication areas, especially emergency communications, play an important role. In the application of emergency communication, the MF-TDMA satellite communication system must complete the construction of the emergency communication network in a very short period of time, which puts forward strict requirements on the networking capabilities of the system; the networking time of the MF-TDMA satellite communication network is mainly determined by the user The access time is determined, ...

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Problems solved by technology

[0005] Aiming at the problem that the existing MF-TDMA satellite multi-user concurrent access anti-collision method has high complexity and is difficult to be applied to the in-service satellite communication system, the invention discloses a satellite communication multi-user concurrent access anti-collision based on ideal point method, first divide the users into user groups, and perform access ranging in units of groups; then build a concurrent access ranging model and build a multi-objective optimization problem on this basis, and use the multi-objective evolutionary optimization algorithm to solve the multi-condition The Pareto optimal solution set to generate the anti-collision plan library; then based on the actual networking requirements, a multi-objective negotiation curve is formed, which is substituted into the plan library to obtain the ideal point under the current networking conditions; finally, the actual parameter configuration is completed according to the ideal point plan

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