A high-speed rail mobile terminal user cell handover method and system
A mobile terminal and cell handover technology, applied in wireless communication, electrical components and other directions, can solve the problems of frequent user handover, busy handover system work, affecting the quality of communication signals of mobile terminal users, etc., to improve handover efficiency and accuracy, improve User communication quality and the effect of reducing the amount of system calculation
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Embodiment 1
[0044] In the mobile communication terminal, since the mobile communication cell signal coverage is limited, it is necessary to switch between different cells based on the physical location of the current location to achieve the best communication effect. In the high-speed rail application scenario, the high-speed rail movement may exceed 150km / h, and 3 or more cells may be required within 1 minute. Due to the characteristics of the high-speed rail application scenario, the passengers in the same car will pass through the cell switching point in a short period of time, and the small interior switching operation needs to be performed in a short period of time; at the same time, due to the long high-speed railway, the high-speed rail operation is required. Continue frequent cell switching. Therefore, in the high-speed rail application scenario, due to the frequent, continuous cell switching, the signal is unstable, and the line and other communication issues are easily caused.
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Embodiment 2
[0058] In actual use scenarios, the high-speed rail mobile terminal user cell switching method provided in Example 1 can also be optimized according to actual scenes.
[0059] The network covers the high-speed rail, there are two main methods, respectively, and is a public network.
[0060] The public network is to integrate the coverage along the high-speed rail, integrate into the unified planning and considering of the surrounding big network, and use the surrounding base stations to cover, but simply optimize and adjust. If you use a public network, the benefits are saving investments. If the bad is, even if it is optimized, the effect is also limited, it is easy to be affected by other base stations of the public network, resulting in a drop. This class is a public network cell.
[0061] The special network method, using a separate network, that is, the high-speed rail private network and the surrounding nets are separated. In addition to the station, the high-speed rail busi...
Embodiment 3
[0070] When performing a high-speed rail cell switching, various switching methods described in Examples 1 and Example 2, some optimization methods can also be used to reduce the amount of calculation of cell switching, improve the signal stability of the switching accuracy and the high-speed rail mobile terminal user.
[0071] In actual use scenarios, one of the following optimization methods can be selected according to specific situations, or multiple optimization methods use:
[0072] (1) Pre-calculate the optimum switching point of the neighboring cell. Due to the physical location and physical coverage of the high-speed rail cell, and the high-speed rail operation trajectory is determined, the theoretical optimal switching point of each small interval in the high-speed rail cell sequence of the first-speed rail cells should be pre-calculated, and the train arrives at the best handover point Users who need cell switching are uniform. Just determine the current position of the h...
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