A location update method for a multi-beam satellite mobile communication system

Abstract

The invention discloses a position update method of a multi-beam satellite mobile communication system, comprising the following steps: a mobile user initiates a position update channel application to the system; the system allocates a channel for sending position update to the mobile user; the mobile user sends a position update request to the system Information; the system sends location update acceptance information to the user; the system predicts the mobile user's moving rate, sets the path set and calculates the path selection probability based on the attractiveness; calculates the re-reporting time interval of the mobile user; the mobile user reports again after the time interval ends Location update information, or trigger an active update program to report location update information during the interval. The present invention considers the characteristics of the terminal and the beam coverage area, and realizes flexible and effective location dynamic update; combines time interval update and active update, fully considers various possible location changes, and avoids multiple paging and tracking users , effectively reducing the system paging overhead.

Description

technical field [0001] The invention relates to satellite mobile communication technology, in particular to a method for updating the position of a multi-beam satellite mobile communication system. Background technique [0002] Location management technology is the key technology of network mobility management in satellite mobile communication system, which affects the performance and operation cost of the whole system. Location management consists of two processes, location update and system paging. When the mobile ground station passes through different beam coverage areas or enters the registration area, it reports its own position to the system through position update, so that the system can track the dynamic changes of the user's position; when a call arrives, the system obtains the user's current location through paging Location information to enable the system to deliver calls to mobile users. [0003] In location management technology, location update and system pa...

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Problems solved by technology

[0004] Chinese patent CN11049693 proposes a satellite mobile communication network, system, and periodic location update duration calculation and update method. The location update duration is determined by calculating the time required for the shortest journey of the ground mobile station, which improves resource utilization. However, this method does not Considering the rate characteristics of the ground mobile station and the scale-free characteristics of the moving path, the reduction of the location update overhead is limited

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