Self-adaption switching method for fast terminal in satellite network

An adaptive handover, satellite network technology, applied in the field of adaptive handover, can solve the problems of relying on historical user motion characteristics, short-term user mobility prediction, large storage space, etc., to facilitate real-time analysis and calculation, unlimited resource allocation and utilization optimization , reduce the effect of wrong switching

Active Publication Date: 2017-05-31
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0009] However, the mobility prediction models in the literature at this stage have (1) short-term (such as next cell) user mobility prediction; (2) restrictive assumptions (for example, the moveme

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  • Self-adaption switching method for fast terminal in satellite network
  • Self-adaption switching method for fast terminal in satellite network
  • Self-adaption switching method for fast terminal in satellite network

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[0080] Example 1 : The accuracy of LEO (low-orbit satellite) prediction and analysis of the remaining service time of fast end users and GEO satellites on LEO satellites is related to the performance indicators of the switching strategy adopted by the entire satellite network communication system, and also related to the entire satellite The handover performance index of the communication system. In the following, simulation is carried out for the above-mentioned prediction and analysis method of the remaining service time of the coverage star.

[0081] The system simulation parameters are as follows: the fast terminal speed is Mach 3 (1.02 kilometers per second), and its flying height is 35km; the average communication time of the fast terminal obeys the exponential distribution; see the detailed parameters of the LEO / GEO satellite communication system and the fast terminal As shown in Table 1 to Table 3:

[0082] Table 1 Simulation parameters of fast terminal aircraft

[0083] ...

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Abstract

The invention discloses a self-adaption switching method for a fast terminal in a satellite network and belongs to the technical field of the satellite communication. The method comprises the steps of finding visible satellites, constructing a two-dimensional mobile model, calculating the remaining service time of the visible satellites one by one, selecting a visible satellite as a target satellite which has a vacant channel resource and has the longest remaining service time, and establishing a communication link with the new target satellite. The two-dimensional mobile model does not depend on users' historical movement data, and therefore a very large storage space is not needed; the newly provided two-dimensional mobile model is universal, not only is suitable for calculating the remaining service time of fast terminal users, but also can be used for analyzing the remaining service time of common low-speed users, and self-adaptation switching demands of two types of users are satisfied; besides, the self-adaptation switching strategy can not only be applied to a single-layered satellite network model, but also can be used for a double-layered satellite network model, and the movement scenes are more universal.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, and in particular relates to an adaptive switching method for fast terminals in a satellite network. Background technique [0002] Today, with the diversified development of communication technology, satellite communication, as an important communication method, is playing an increasingly important role. Satellite network is widely used in the field of communication due to its global coverage, flexible networking, strong anti-interference and other advantages. LEO (Low Earth Oribit Satellite, low-orbit satellite) is becoming an important development direction of the future satellite mobile communication system due to its advantages of small delay and low power consumption. Most of the terminals in the current satellite communication system are slow terminals. However, with the development of science and technology, the strengthening of the trend of globalization and the needs of...

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Application Information

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IPC IPC(8): H04W36/00H04W36/08H04W36/24H04W36/32H04B7/185
CPCH04B7/18576H04W36/0083H04W36/08H04W36/24H04W36/32H04B7/18541
Inventor 胡鹤飞林蒙刘元安冉静袁东明高锦春
Owner BEIJING UNIV OF POSTS & TELECOMM
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