A method and device for transmitting control signals based on weighted aggregation

Abstract

An object of the present invention is to provide a method and device for transmitting control signals based on weighted aggregation. Specifically, determine each aggregation level weight vector corresponding to the control signal to be transmitted through the multi-antenna elements corresponding to the common control channel port; and transmit the control signal through the multi-antenna element according to the each aggregation level weight vector . Compared with the prior art, the present invention is adopted. Compared with the prior art, an embodiment of the present invention determines each aggregation level weight vector corresponding to the control signal to be transmitted through the multi-antenna elements corresponding to the common control channel port, so that according to each aggregation level weight vector, through the multi-level weight vector The antenna element transmits the control signal, realizes the coverage enhancement of the common control channel in the 3D-MIMO system, solves the coverage loophole problem in the 3D-MIMO due to the introduction of the 2D planar array, and the antenna array gain of the present invention is within the entire EOD span. The more evenly distributed, the gain is also significant.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a technology for transmitting control signals based on weighted aggregation. Background technique [0002] In a traditional MIMO (Multiple Input Multiple Output) system, such as figure 1 Showing an example of traditional MIMO, an evolved base station (eNB, evolved Node B) mainly optimizes serving user equipment (UE, User Equipment) on the ground. In the vertical dimension, the same narrow beam is used for data and control transmissions, with the vertical beam usually pointing towards the UE with the most traffic on the ground. In the horizontal dimension, narrow beams are used for data transmission only, and wide beams are used for control transmissions to ensure their reliability in the target coverage area. However, in a three-dimensional MIMO (3D-MIMO) system, such as figure 2 Showing an example of 3D-MIMO, the eNB needs to cover UEs on the ground and ...

AI Technical Summary

Problems solved by technology

However, the existing implementation of wide beam schemes for control channel transmission in 3D-MIMO systems, such as the scheme "On cell association in FD-MIMO systems" in the 3GPP meeting 3GPPRAN1 R1-142860 (about cell association in FD MIMO systems ), although there is no coverage hole about PDCCH transmission in this scheme in the vertical dimension, the problem is that the gain of the 10-antenna element array is reduced relative to the gain of a single antenna element, and the avoidance of the coverage hole is to reduce the coverage for the price

Images