Channel estimation method, base station, user equipment and system

Abstract

The embodiment of the invention relates to a channel estimation method, a base station, user equipment (UE) and a system. The method comprises the following steps that: connection between the base station and the UE is established; and notification information that the UE is in a remote radio scene is sent to the UE, wherein the notification information is used for indicating the UE to perform channel estimation by adopting a channel estimation algorithm suitable for the remote radio scene, and the channel estimation algorithm is used for performing channel estimation on a signal obtained by superposing downlink signals from a plurality of remote radio units (RRUs). In this way, the UE can perform channel estimation by adopting a proper channel estimation algorithm, the accuracy of channelestimation can be effectively improved, and then the downlink data throughput of the UE is effectively improved.

Description

[0001] This application is a divisional application of a Chinese patent application filed with the China Patent Office on June 13, 2017, with application number 201580067854.4, and application name "Channel Estimation Method, Base Station, User Equipment, and System", the entire contents of which are hereby incorporated by reference In this application. technical field [0002] 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 [0003] 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. [0004] In th...

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Problems solved by technology

[0005] 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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