A satellite call access control method

A technology of call access control and new call, applied in radio transmission system, communication between multiple stations, electrical components, etc., can solve the problem of not quantitatively considering users' different QoS requirements and satisfaction, on-board wireless resource utilization It can solve the problems of low rate and low overall service utility, and achieve the effect of improving bandwidth jitter and fairness issues, improving satellite network congestion, and improving on-board resource utilization.

Inactive Publication Date: 2008-01-16
BEIHANG UNIV
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Problems solved by technology

The above two methods used on the ground are difficult to implement on the satellite due to the large amount of calculation and high real-time requirements.
[0006] To sum up, the current satellite access methods mainly have: large amount of calculation, poor real-time performance, low utilization rate of wireless resources on the satellite, and no quantitative consideration of different QOS requiremen

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  • A satellite call access control method
  • A satellite call access control method
  • A satellite call access control method

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[0040] The satellite network of the future needs to support multiple services and provide different QOS guarantees for different services. Therefore, a differentiated service method is commonly used in satellite networks to divide different services into several priority levels, and different priority levels have different QOS guarantees. In access control, services of different priorities also need to be treated differently. Satellites give priority to meeting high-priority resource requirements and prioritize access to high-priority services. For the sake of simplicity, in the following description, services are mainly divided into two types: high-priority services and low-priority services. For simplification, it is assumed that the QOS requirements of high-priority services include the minimum number of resources and the number of expected resources; the QOS requirements of low-priority services include the minimum number of resources and the number of expected resources, and ...

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Abstract

An on-board call access control method is characterized in that for access request, firstly judge the type of call: if a switching call, determine the switching call service is low-priority or high-priority, and implement the switching call request access process on the low-priority or the high-priority call service; if a new call, determine the new call service is low-priority or high-priority, and implement the new call request access process on the low-priority or the high-priority call service. Under the circumstances of ensuring the indexes of handoff failure probability of satellite systems, the new call-blocking probability, the link bandwidth utilization and so on, the invention fully considers the satisfaction of users and the influence of network-load changes on the system performances, effectively ensures the QOS requirement of mobile satellites, and improves comprehensive properties and robustness of satellite systems.

Description

technical field [0001] The invention relates to a method for allocating wireless channel resources in a low-orbit satellite network, in particular to a method for controlling call access on a satellite. Background technique [0002] Call access control refers to the provision of QOS guarantees for calls to be connected to the network, including newly initiated calls and calls handed over from adjacent cells due to handover. Allocate the required resources to ensure the QOS of the call, that is, reserve resources for the call on the star, otherwise reject the call. [0003] The low-orbit satellite network is also a network, and the satellites, ground stations, and master control stations in the satellite network form the nodes in the network. Due to the characteristics of the satellite network itself, that is, network topology and dynamic link changes, the link may often be interrupted; in addition, low-orbit satellites use spot beam antennas to cover the target area, and th...

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Application Information

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IPC IPC(8): H04B7/185H04B7/26H04Q7/38
Inventor 张涛张军康政
Owner BEIHANG UNIV
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