A method and terminal for realizing multi-antenna transmission

Abstract

Embodiments of the present invention disclose a method and a terminal for implementing multi-antenna transmission. The method includes: setting a group of low-correlation antennas and a group of high-correlation antennas, where the correlation between antennas in the group of low-correlation antennas is lower than the correlation between antennas in the group of high-correlation antennas; receiving a response message carrying a transfer mode switching instruction fed back by an evolved NodeB; and extracting the transfer mode switching instruction from the response message fed back by the evolved NodeB; if the transfer mode switching instruction is corresponding to a first transfer mode, switching to the group of low-correlation antennas to transmit signals; and if the transfer mode switching instruction is corresponding to a second transfer mode, switching to the group of high-correlation antennas to transmit signals.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and terminal for realizing multi-antenna transmission. Background technique [0002] In the current wireless high-speed communication system, MIMO (Multiple Input Multiple Output, multiple input and output antenna system) and Beam forming (wave velocity shaping) technologies are widely used; especially for 3GPP LTE (LongTerm Evolution, long-term evolution) systems , which requires that all LTE UEs (User Equipment, user equipment) must support MIMO technology, and at the same time, for the TDD (Time Division Duplexing, time division duplexing) mode of LTE, UEs must support Beam forming technology. [0003] Among them, MIMO is a multi-antenna technology in a wireless communication system. It mainly uses multiple antennas at the transmitting end to send signals independently, and at the same time uses multiple antennas at the receiving end to receive informat...

AI Technical Summary

Problems solved by technology

However, in the TDD mode of LTE, the UE must support the Beam forming technology, and the base station in the TDD system uses the reciprocity of the uplink and downlink channels to perform beamforming. The shape is made for a single transmit antenna, which leads to the gain of low antenna correlation that satisfies the best performance of MIMO is lower than the gain of high antenna correlation, and such low antenna correlation obviously affects The gain of Beam forming affects the coverage and system capacity of the cell

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