Call admission control scheme based on maximizing throughput for multi-beam GEO satellite communication system
An access control, multi-beam technology, applied in the field of satellite communication wireless resource management, can solve the problems of rising, long distance between GEO satellites and users, path loss and transmission delay can not be ignored, etc., to achieve good resource utilization, Significant effect on system throughput
Active Publication Date: 2017-09-01
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
However, due to the limited on-board resources such as on-board processing capability, bandwidth, power, etc., in some scenarios, the satellite system may not be able to meet the access needs of a large number of users, which may reduce the call blocking rate (Call Blocking Probability , CBP) increases, so that the user's QoS (Quality of Service, quality of service) cannot be guaranteed
Secondly, the distance between GEO satellites and users is very long, and the path loss and transmission delay generated during communication cannot be ignored
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[0034] The specific implementation method of the present invention will be described in detail below with reference to the accompanying drawings.
[0035] The present invention proposes a multi-beam GEO system access control strategy based on maximizing throughput (A CallAdmission Control Scheme Based on Maximizing Throughput for the Multi-beamGEO Satellite Communication System); firstly, the GEO communication system is modeled and analyzed, such as figure 1 Shown is a multi-beam GEO satellite, which can provide services for mobile phones, airplanes, and car phones; due to the uneven distribution of user terminals and the randomness of new calls, the channel conditions of each beam are different. Therefore, the main problem in the multi-beam GEO system access control strategy is the selection of beams: assuming that a GEO satellite system has multiple beams, when there is a new call request, the system will decide whether to allow the new call request access, if allowed Allocate ...
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The invention discloses a call admission control scheme based on maximizing throughput for a multi-beam GEO satellite communication system and belongs to the field of satellite communication radio resource management. Specifically, the scheme comprises the steps that a GEO satellite system searches beams satisfying a channel condition and transmission time delay for a call request of certain user under a current frequency multiplexing factor; the total system throughput of the user under each beam is calculated; the maximum value is selected and the user is admitted to the corresponding beam; all new users are admitted to the corresponding beams and the sum of the total system throughputs at the moment is calculated; a next frequency multiplexing factor is selected and the sum of the total system throughputs of all users under the frequency multiplexing factor is calculated repeatedly; and the maximum value in all total sums of the total throughputs is selected, so the frequency multiplexing factor and a user admission mode are determined. According to the scheme, path losses, user arrival rates and the frequency multiplexing factors are taken into consideration, and under the condition of satisfying a transmission time delay threshold value, the system throughput is maximized.
Description
Technical field [0001] The invention relates to the technical field of satellite communication wireless resource management, in particular to a multi-beam GEO system access control method based on maximizing throughput. Background technique [0002] Although science and technology are advancing with each passing day, the ground mobile communication system is becoming more and more perfect; however, due to the constraints of geographical conditions and the imbalance of global economic development, the ground mobile communication system is somewhat incapable of achieving global coverage; for example, China’s complex terrain There are many mountainous and hilly areas, and it is difficult to complete the network construction of ground communication systems in these areas; the ocean, which occupies more than half of the earth’s area, is also a difficulty in ground mobile communication coverage; natural disasters have occurred frequently in recent years, and the network equipment of gro...
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IPC IPC(8): H04W16/28H04W24/02H04W74/00H04W84/06
CPCH04W16/28H04W24/02H04W74/002H04W84/06
Inventor 崔高峰李鹏绪于佳伟马吟龙李秀华王卫东
Owner BEIJING UNIV OF POSTS & TELECOMM