Admission control method suitable for FDMA satellite communication system

Abstract

The invention discloses an admission control method suitable for an FDMA (Frequency Division Multiple Access) satellite communication system, which comprises the following steps of: judging whether auser of a target request call is a common user or a special user according to the user level of the target request call, further judging whether the target request call of the common user is a new call or a switching call, and according to a judgment result, performing admission judgment on the target request call by using a corresponding admission judgment mechanism, and further executing an admission or admission rejection command on the target request call according to a judgment result. According to the method provided by the invention, the priorities of special users for resource use areembodied by distinguishing user levels; the threshold strategy, the reservation strategy and the preemption strategy are combined for use, a complete admission control judgment mechanism is provided,and the QoS and the frequency resource utilization rate of a user are ensured.

Description

technical field [0001] The invention relates to the technical field of satellite communication, in particular to an admission control method applicable to an FDMA satellite communication system. Background technique [0002] In recent years, ground communication systems have developed rapidly, and 5G has been put into use. With the characteristics of high speed, low delay and high reliability, 5G communication system will surely occupy the main market. Nevertheless, satellite communication still has an irreplaceable position in military communication, television broadcasting, emergency rescue and disaster relief, communication in remote areas on sea and land due to its characteristics of long communication distance, large coverage area, and not being restricted by geographical conditions. Among them, the cost-effective FDMA satellite communication system is a typical satellite communication system currently in use, and its network design and business organization are highly...

AI Technical Summary

Problems solved by technology

[0005]The existing satellite communication system admission control method, such as the publication number is CN201310501668.X, the patent name is "Multi-service IDMA connection admission control method and system based on channel estimation 》In the patent, according to the system setting period T, the signal-to-interference ratio of the online user pilot signal is measured, and compared with the threshold value of the set pilot signal signal-to-interference ratio, the users with better channel quality and the users with lower channel quality are obtained For users with poor channel quality, the rate is downgraded to maximize the performance of the system through different rate selections. The signal-to-interference ratio is used as a threshold parameter to make admission decisions for handover calls and new calls, but does not consider user levels. , does not reflect the priority of special users;

[0006]The existing satellite communication system admission control method has the following problems: it fails to reflect the priority of special users for resource use; It is also a complete solution suitable for special users; in addition to different QoS requirements, different service types have different resource usage, but the existing admission control method does not consider the resource usage factor, which will result in different resource usage Calls are treated unfairly when the system makes admission control decisions; the cell coverage of most satellite communication systems is relatively large, and the probability of handover is small. Most of the existing admission control methods have reserved resources for handover calls , which reduces the resource utilization rate, resulting in a waste of bandwidth; most of the existing admission control methods consider a single factor when implementing the preemption strategy, and cannot rationally integrate various factors to determine the admitted calls that should be preempted.

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