Downlink control signal transmission method and apparatus

Abstract

The invention provides a downlink control signal transmission method and apparatus. The method comprises the following steps: a base station generates one or more radio frames; and the base station sends the one or more radio frames, wherein the one or more radio frames comprise a plurality of blocks, each block carries a synchronization signal and a downlink control signal, the synchronization signal and the downlink control signal are time-divisionally arranged, each block is sent through one or more downlink beams of the base station, at least two blocks are sent by different beams, and theplurality of blocks at least comprise two temporally consecutive blocks; and as the downlink control signal is placed in the block carrying the synchronization signal, the signaling overhead is reduced.

Description

Technical field [0001] The present invention relates to the field of wireless communication, and more specifically, to a method and device for transmitting downlink control signals. Background technique [0002] In order to meet the large-capacity and high-speed transmission requirements of mobile communication systems, the introduction of high-frequency frequency bands greater than 6GHz for communication to take advantage of its large bandwidth and high-speed transmission characteristics is one of the hot research technologies in 5G communication systems. Due to the high path loss of high-frequency communication, narrow beams are required to ensure the propagation distance and high beam gain. However, the coverage of narrow beams is limited. In order to ensure communication quality, narrow beam alignment between high-frequency base stations and terminals is required. The design of broadcast channels, control channels, synchronization channels, and random access channels has brou...

AI Technical Summary

Problems solved by technology

In high-frequency communication, since narrow beams are used as directional beams, if you want to obtain the effect of omnidirectional coverage in the existing mobile communication system, you need to traverse all directional beam combinations at the sending end and receiving end; if the sending end and Both the receiving end uses directional beams, and the number of the above-mentioned beam combinations is very large. For example, if both the sending end and the receiving end use 4 directional beams, a total of 16 directional beam combinations will be generated, which will lead to a sharp increase in high-frequency system overhead. In addition, the base station needs to specifically send signaling to inform the terminal of the corresponding beam resource information, which increases the system overhead.

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