Channel estimation method, base station, user equipment and system

Abstract

The embodiment of the present invention relates to a channel estimation method, a base station, a user equipment UE, and a system. The method includes: establishing a connection between the base station and the user equipment UE; sending notification information to the UE that the UE is in a radio remote scenario, and the notification information It is used to instruct the UE to perform channel estimation using a channel estimation algorithm suitable for the remote radio frequency scenario, where the channel estimation algorithm is used to channel the superimposed downlink signals from multiple remote radio units RRU estimate. The UE can use an appropriate channel estimation algorithm to perform channel estimation, which can effectively improve the accuracy of channel estimation, thereby effectively improving the downlink data throughput of the UE.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a channel estimation method, a base station, user equipment (User Equipment, UE) and a system. Background technique [0002] With the development of science and technology, users' demands for communication in high-speed scenarios are also increasing. For example, users communicate on a moving high-speed train. When the UE communicates in a high-speed mobile state, various problems such as low throughput rate, frequent handover, high handover failure rate, and high wireless link failure rate will occur. [0003] In the prior art, for the problems of frequent handover and low throughput of high-speed rail mobile communication, a solution is to adopt a strip topology, that is, a base band processing unit (Base Band Unit, BBU) is mounted with multiple remote radio units (Radio Remote Unit, RRU). The RRU is arranged along the railway track. For the convenience of descripti...

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Problems solved by technology

[0004] Although the remote radio deployment can effectively reduce the number of handovers and improve the SINR of the signal received by the UE, in the above remote radio scenario, since multiple RRUs transmit downlink signals for the UE at the same time, the signal received by the UE is more complicated, and the channel estimation results Very unsatisfactory, thus affecting the UE's downlink data throughput

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