A Spaceborne Dynamic Spectrum Resource Scheduling Method Based on Service Rate Control

Abstract

The invention discloses a space-borne dynamic frequency spectrum resource scheduling method based on service rate control, which belongs to the field of satellite communication. The scheduling method is based on a "cross-layer" allocation model, and utilizes physical (PHY) layer channel state information combined with media access control (MAC) layer queue state information to perform dynamic frequency domain resource scheduling. On this basis, by introducing the service rate waste control parameter in the allocation objective function, the problem of system service rate waste caused by the data transmission rate allocated by the scheduler exceeding the user's business demand can be effectively controlled, so that system resources can be effectively used to serve communication services QoS requirements. While improving spectrum efficiency, the scheduling method reduces the impact of interfered frequency bands on communication quality, and ensures efficient utilization of system frequency domain resources for service transmission requirements.

Description

technical field [0001] The invention belongs to the field of satellite communication, and relates to a method for scheduling dynamic frequency spectrum resources on a satellite based on service rate control. Background technique [0002] With the rapid popularization and wide application of satellite services, the development model of simply relying on signal processing technology to enhance the effectiveness and reliability of communication transmission can no longer meet the needs of the increasingly Growing business needs. At present, the shortage of wireless resources has become a key factor restricting the further improvement of communication system performance. [0003] The traditional fixed allocation method has poor flexibility and low allocation efficiency, and cannot realize efficient utilization of wireless resources. Taking the round robin algorithm as an example, regardless of the current channel communication quality, the subcarriers to be allocated by the sy...

AI Technical Summary

Problems solved by technology

Common scheduling algorithms based on PHY layer information, such as greedy algorithm, proportional fairness algorithm, etc., are single-layer optimization schemes with limited transmission service processing capabilities

However, the existing scheduling algorithms based on cross-layer information, such as the maximum delay utility algorithm, will lead to serious waste of resources because the service rate control problem is not considered.

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