Ground-air wideband communication switching method and system under high-speed moving condition

Abstract

The invention discloses a ground-air wideband communication switching method and system under a high-speed moving condition. The ground-air wideband communication switching method comprises the following steps that: a current base station acquires aircraft position information and aircraft posture change information from aircraft-mounted terminal equipment; the aircraft-mounted terminal equipment measures and reports the signal quality of the current base station; the aircraft-mounted terminal equipment starts to measure a transmitting signal of a neighboring base station and reports the signal quality of the neighboring base station according to the signal quality of the current base station or a switching measurement request sent by the current base station; the current base station performs cross-region switching from the current base station to the neighboring base station according to the aircraft posture change information, the signal quality of the current base station and the signal quality of the neighboring base station. According to the ground-air wideband communication switching method and system disclosed by the invention, an effective switching decision can be made when the signal strength received by a terminal becomes weak according to position information and gesture information of an aircraft, so that performance reduction caused by ping-pong effect and too late switching decision can be avoided, in-time, effective, quick and smooth switching can be realized, and therefore service quality of ground-air wideband business is finally ensured.

Description

technical field [0001] The invention relates to the field of wireless broadband ground-air communication and the field of aviation information management, in particular to a system and a switching method for realizing switching of wireless ground-air communication and high-bandwidth communication. Background technique [0002] With the development of mobile communication technology, people are not only satisfied with ground communication, but the demand for communication services to cover other occasions such as airspace has become increasingly prominent. How to apply mobile communication technology in the aviation system and realize broadband ground-air communication service has become the focus of domestic and foreign research. How to solve the problem of handover of high-speed mobile terminals during flight is the key to the quality assurance of broadband services in the ground-air communication system, especially real-time services. However, the existing terrestrial cel...

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Problems solved by technology

[0004] Furthermore, the terminal used in the current terrestrial communication system needs to continuously measure the signal quality of adjacent cells in the process of communicating with the current base station, so as to generate a list of candidate adjacent cell handover base stations, so that the terminal can switch to the corresponding target cell in the list in time. However, this method requires the terminal to continuously measure the channel of neighboring base stations

This method takes a long time to measure, and the calculation overhead caused by the measurement is large, so it is not suitable for the ground-air communication system with the position information and attitude information of the terminal (aircraft).

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