Method, base station and user equipment for transmitting physical resource blocks and estimating channels

摘要

A method, a base station and a user equipment for transmitting physical resource blocks and estimating channels are provided. The method includes: scheduling, by a base station, M PRBs for the user equipment, and configuring reference signal patterns for the M PRBs as following: allocating (X−1)M+1 demodulation reference signal subcarriers for M PRBs in a frequency domain, configuring only one demodulation reference signal subcarrier within a range of (−N, N] subcarriers in a border of every two PRBs, where locations of the rest (X−2)M+2 demodulation reference signal subcarriers keep consistent with locations of demodulation reference signal subcarriers in M contiguous first demodulation reference signal patterns in a frequency domain; and transmitting the configured M PRBs to the user equipment, so that the user equipment performs joint channel estimation according to the configured M PRBs. This saves reference signal overheads and optimizes data transmission rate.

主权项

1. A method for transmitting physical resource blocks, comprising:
scheduling, by a base station, M contiguous physical resource blocks (PRBs) for a user equipment and configuring reference signal patterns for the M PRBs, wherein the configuring the reference signal patterns comprises:
allocating (X−1)M+1 demodulation reference signal subcarriers for the M PRBs in a frequency domain, and based on a boundary of every two PRBs, configuring only one demodulation reference signal subcarrier within a range of (−N, N] subcarriers in the boundary of every two PRBs, where locations of remaining (X−2)M+2 demodulation reference signal subcarriers in each of the M contiguous PRBs are the same as locations of first demodulation reference signal patterns in the frequency domain;where X indicates a quantity of demodulation reference signal subcarriers included in a reference signal pattern of a single PRB when the base station allocates the single PRB to the user equipment for channel estimation; M is a positive integer greater than 1; N is a positive integer greater than 1 and smaller than or equal to 12/(X+1); the demodulation reference signal subcarrier refers to a subcarrier carrying the demodulation reference signals; the first demodulation reference signal pattern refers to a demodulation reference signal pattern used when the base station allocates the single PRB to the user equipment for the channel estimation; and transmitting the configured M PRBs to the user equipment, to enable the user equipment to perform a joint channel estimation according to the configured M PRBs.