Cell synchronous switching method and system

A cell synchronization and adjacent cell technology, applied in the direction of wireless communication, electrical components, etc., can solve problems such as dropped calls, lack of base station switching, etc., to achieve the effect of increasing coverage, ensuring communication quality, and reducing pressure

Active Publication Date: 2015-06-03
HUAWEI TEHCHNOLOGIES CO LTD
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AI Technical Summary

Problems solved by technology

[0005] Although the repeater solution can amplify the signal of the base station and optimize the communication quality in high-speed scenarios, the solution also faces the problem of call drop during handover
During the high-speed movement, the repeater set on the top of the train passes through different base station coverage areas, so at the overlap of the base station coverage areas, it is necessary to consider the switching problem of the base station; and the existing repeater stations are usually It is fixed to be used in a certain environment and does not have the ability to switch base stations

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  • Cell synchronous switching method and system

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Embodiment Construction

[0031] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0032] Aiming at two problems faced in high-speed scenarios: one is the selective switching of relays to base stations. The antenna angle design of the traditional relay is fixed, because the antenna coverage angle of the corresponding base station is also fixed. As long as the donor antenna of the relay is aligned with the antenna of the base station, the best relay effect can be guaranteed. However, in high-speed scenarios, the base station corresponding to the relay is constantly changing along with the layout of the base stations along the line, so the relay must judge which base station has a better signal and switch to receive the signal of the better base station. The second is handover between the terminal and the base station. The signal is sent from the base station and reaches the terminal after being for...

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Abstract

The present invention discloses a method for cell synchronized handover, which comprises: a relay performs relay processing on the signals from a source Base Station (BS) of the current serving cell, and then forwards the processed signals to a terminal; the relay and the terminal perform detection for the signal strength of neighboring cells in the moving direction; according to the detection result, when the handover condition is determined to be satisfied, the relay interrupts the signal forwarding with the source BS, performs relay processing on the signals from a target BS, then forwards the processed signals to the terminal, and the terminal performs handover to the target BS. The present invention also discloses a system for cell synchronized handover. The method and system of the present invention solve the problem of call drop in prior art which happens when the terminal performs cell handover in high speed scene.

Description

technical field [0001] The invention relates to cell switching technology in mobile communication, in particular to a method and system for cell synchronous switching in a communication system with relay. Background technique [0002] Repeaters play a big role in relaying wireless signals, extending wireless coverage areas, covering special terrains, deploying services, eliminating blind spots, and optimizing networks. Such as figure 1 As shown, the main components of the repeater are antenna (donor antenna and repeater antenna), duplexer 11, low noise amplifier 12, filter 13 and power amplifier 14. The signal is filtered and amplified, and the amplified signal is forwarded to the next communication link by the forwarding antenna. In areas with poor communication conditions, repeaters can be used to amplify base station signals to achieve larger area coverage; in areas with complex terrain, repeaters can be used to amplify signals in specific directions to extend wireless ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/08H04W36/30
CPCH04W36/0055
Inventor 王曼朱昀
Owner HUAWEI TEHCHNOLOGIES CO LTD
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