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Optimal broadcast period calculation method for mobility management of non-geostationary satellite communication system

A technology of a satellite communication system and a calculation method, applied in the field of optimal broadcast period calculation of mobility management, can solve problems such as competing access conflicts, and achieve the effects of reducing system overhead and improving access performance

Active Publication Date: 2019-03-29
XIDIAN UNIV
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Problems solved by technology

[0005] To sum up, the existing problems in the prior art are: in the prior art non-geostationary orbit satellite communication system, there are contention access conflicts caused by the simultaneous broadcast triggering of mobility management services. Performance has a great impact, so it is necessary to calculate the optimal broadcast period

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[0043] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] like figure 1 As shown, the non-geostationary orbit satellite communication system mobility management optimal broadcast period calculation method provided by the embodiment of the present invention includes the following steps:

[0046] S101: Calculate the total number of average access requests for mobility management;

[0047] S102: Calculate the time overhead for completing the mobility management access request;

[0048] S103: Calculate the number of competing users for ...

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Abstract

The present invention belongs to the field of satellite communication technology, and discloses a method for calculating an optimal broadcast period for mobility management of a non-geostationary satellite communication system. The method for calculating an optimal broadcast period for mobility management of a non-stationary orbit satellite communication system is as follows: According to an application scenario, in a start time of a broadcast period TATAG_ADV, the number of new users in a coverage area triggered by broadcasting related information by a satellite is N. These users need to start a mobility management process at the same time, competing for access to a satellite and transmitting mobility management request information by using timeslot ALOHA. To reduce system overheads caused by a competition conflict, and improve access performance of the system, an optimization target expression of the least average time overhead is constructed, an optimal number of users of the systemat this time is obtained, and an optimal broadcast period (img file='DDA0001927840600000011.TIF' wi='214' he='80' / ) is obtained. The present invention solves a problem that system access performanceis low because of the competition access conflict caused by a mobility management service triggered for being simultaneous broadcasted in the non-geostationary satellite communication system.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to a method for calculating an optimal broadcast period for mobility management in a non-geostationary orbit satellite communication system. Background technique [0002] Satellite communication refers to the way of using artificial earth satellites as relay nodes or communication nodes of the communication network to communicate. An emerging wireless communication technology developed on the basis of microwave communication and aerospace technology. Satellite communication has become a research hotspot due to its large coverage area, long communication distance, large communication capacity, stable communication lines, and good quality. The relative movement between non-geostationary orbit satellites and ground users in the satellite communication system causes users to passively generate mobility management events. [0003] In the existing technology ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04B7/185
CPCH04B7/1851H04W74/0833
Inventor 刘勤蔡冬桃黄鹏宇李红艳
Owner XIDIAN UNIV
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