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Satellite and ground network switching method by preempting reserved channel based on time

A technology for reserved channels and network switching, which is applied in the field of time-based preemption of reserved channels for satellite-to-ground network switching, can solve problems such as resource waste, achieve the effects of avoiding resource waste, improving overall performance, and alleviating the new call blocking rate

Active Publication Date: 2017-05-31
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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AI Technical Summary

Problems solved by technology

[0008] The present invention provides a satellite-to-ground network switching method based on time preemption of reserved channels, aiming to improve the resource waste problem that the reserved channel cannot be used when there is no switching call caused by channel reservation in satellite-to-ground network switching

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  • Satellite and ground network switching method by preempting reserved channel based on time
  • Satellite and ground network switching method by preempting reserved channel based on time

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Embodiment Construction

[0033] In order to make the object, technical scheme and advantages of the present invention clearer, the following reference Figure 1-Figure 2 Examples are also given to further describe the inventive solution in detail.

[0034] Such as figure 1 As shown, cell I and cell III are ground cells, and cell II is a satellite cell. The idea of ​​the present invention is: assuming that there is a new call access request in cell II, and at this moment, there is no idle available public channel in cell II, only A reserved channel exclusively for switching. The system can judge whether it can forcibly occupy the reserved channel to admit the new call according to the new policy in this chapter. The judgment process is as follows, figure 2 Shown is the channel allocation process of the present invention:

[0035] (1) When a new call from the ground cell arrives at the satellite cell, the satellite cell allocates channels according to the channel reservation combined with switching...

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Abstract

The invention provides a satellite and ground network switching method by preempting a reserved channel based on time. In the strategy, a cell I and a cell III are two cells in a ground network; a cell II is a cell in a satellite network; the cell I is a set of all cells including users wanting to switch the satellite network; the cell III is a set of cells, into which all satellite network users are switched; no available public channel exists in the cell II; only a reserved channel special for switching exists; when the cell II has a new call access request, the system can preempt the reserved channel according to a decision rule of the strategy so as to accept the new call access; the strategy is as follows: on the basis of channel reservation, on the premise that the switching performance of a previous cell is not influenced, whether a new call user can preempt the idle reserved channel in the cell or not can be judged based on the pre-switching time; therefore, the new call blocking rate is reduced; and the satellite resource utilization rate is increased.

Description

[0001] Technical field: [0002] The invention relates to the technical field of satellite-ground network fusion, in particular to a method for switching satellite-ground networks based on time preempting reserved channels. [0003] Background technique: [0004] At present, few people consider the application of satellites in the research of traditional mobile communication. However, satellites have the advantages of wide coverage, large coverage beams, flexible networking, and communication not limited by geographical environments, etc., and can realize truly global mobile communications, including remote areas, deserts, rivers, seas, Pole, in space. Therefore, with the support of satellite communication, the main goals of globalization, integration and personalization of the mobile communication system can be realized, and users can be provided with larger capacity, larger bandwidth and more flexible services. With the development of the two technologies, in order to reali...

Claims

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Application Information

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IPC IPC(8): H04B7/185H04W28/26
CPCH04B7/18541H04W28/26
Inventor 李广达张亚生刘刚
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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