Method for obtaining channel characteristics, user equipment and base station

Abstract

The present invention relates to a method for acquiring channel characteristics, a user equipment and a base station. The method includes: the user equipment UE acquires quasi-co-site configuration information, and the quasi-co-site configuration information is used to indicate at least one of the first antenna port and the second antenna port A channel characteristic is quasi-co-sited, wherein the first antenna port and the second antenna port correspond to different carriers; the UE determines the first antenna port and the second antenna port according to the quasi-co-sited configuration information At least one channel characteristic in the port is quasi-co-sited; the UE obtains the signal in the second antenna port from the signal received on the first antenna port or the first antenna port and the second antenna port The at least one channel characteristic of the quasi-co-site of the first antenna port solves the problem that some cells of some carriers cannot pass the quasi-co-site when there are no certain reference signals by using a cross-carrier antenna port quasi-co-site configuration method. The configuration determines the channel characteristics of the antenna ports and the inflexibility of the quasi-co-site configuration, so that cells and carriers without certain reference signals can also use the quasi-co-site configuration to determine the channel characteristics of the antenna ports, further expanding the use of quasi-co-site The signal type corresponding to the reference antenna port and the channel characteristic corresponding to the quasi-co-site expand the application range of the quasi-co-site configuration and make the quasi-co-site configuration more flexible.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method for acquiring channel characteristics, user equipment and a base station. Background technique [0002] In the Long Term Evolution (LTE) system, the large-scale characteristics of the channel transmitting the signal on the other antenna port can be inferred from the channel transmitting the signal on one antenna port, then these two antenna ports are called quasi Co-site (QCL, Quasi-Co-Location). Among them, the large-scale characteristics of the channel include: delay spread (Delay Spread), Doppler spread (Doppler Spread), Doppler shift (Doppler Shift), average gain (Average Gain) and average delay (Average Delay) one or more of the . [0003] For example, the user equipment (User Equipment, UE) can determine the demodulation reference signal (Demodulation Reference Signal, DM RS) antenna port and a CSI-RS configured by higher layer signaling of the same cell accord...

AI Technical Summary

Problems solved by technology

[0005] In view of this, embodiments of the present invention provide a method for obtaining channel characteristics, user equipment, and a base station, so as to solve the above-mentioned situation that there is no CRS or no CSI-RS in the cell on the same carrier, and the antenna port of the cell on the carrier cannot realize quasi-co-station problem

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