Bandwidth assignment method and bandwidth assignment system applied to satellite communication system

Abstract

Embodiments of the invention provide a bandwidth assignment method and a bandwidth assignment system applied to a satellite communication system. The method comprises the following steps: receiving a target service request of a target user and determining the priority corresponding to the target service request; extracting request information of the target user from the target service request; using a pre-built utility function to generate a relation function between the number of time slots assigned to the target user and the utility value corresponding to the number of time slots based on the priority, the minimum guaranteed number of time slots, the target modulation order and the target coding rate; building a utility maximization model according to the minimum guaranteed number of time slots and the number of requested time slots in the request information, the relation function and the total number of assignable time slots of the current system; and working out the number of time slots assigned to the target user when the utility maximization model gets the maximum utility value, and determining the bandwidth assigned to the target user according to the number of time slots assigned. According to the embodiments of the invention, bandwidth assignment is performed under the condition of taking both the system performance and the user request into consideration, and the bandwidth utilization rate is improved.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to a bandwidth allocation method and system applied to a satellite communication system. Background technique [0002] At present, the satellite communication system has the advantages of large communication range, high reliability and rapid opening of the circuit, which makes the demand for the use of the satellite communication system increase day by day. [0003] However, due to the constraints of the space environment and production costs, the available bandwidth resources in satellite communication systems are very limited. The traditional bandwidth allocation method tends to focus on the user's request information, and pays less attention to the link state information. However, factors such as the quality of the link state and the encoding method will affect the communication quality. For example: if the communication quality Bad links allocate too much bandwi...

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Problems solved by technology

[0003] However, due to the limitation of the space environment and production costs, the available bandwidth resources in the satellite communication system are very limited

The traditional bandwidth allocation method tends to focus on the user's request information, and pays less attention to the link state information. However, factors such as the quality of the link state and the encoding method will affect the communication quality. For example: if the communication quality Bad links allocate too much bandwidth, resulting in a waste of bandwidth resources

That is to say, in the prior art, the bandwidth is allocated without taking into account the system performance and the user's request, so that the bandwidth resources in the satellite system are not efficiently utilized

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