Signal transmission method and system under carrier aggregation

Abstract

The invention relates to a signal transmission method and a signal transmission system under carrier aggregation. The method comprises that: a base station allocates a component carrier or physical uplink control channel PUCCH transmission parameters and/or sounding reference signal SRS transmission parameters of a plurality of component carriers, and sends the transmission parameters to UE; and the UE transmits PUCCH and/or SRS on corresponding component carriers respectively according to the transmission parameters of the component carriers. The PUCCH and SRS multiplex transmission method under the condition of the carrier aggregation is compatible with LET UE, can be used on multiple carriers without conflict, and can maximize the utilization efficiency of frequency spectrum.

Description

Technical field [0001] The present invention relates to the field of communications, and in particular to a signal transmission method during carrier aggregation. Background technique [0002] The Long Term Evolution (LTE) system is an important plan of the third-generation partner organization. figure 1 Shows a structural schematic diagram of the basic frame structure in the LTE system; such as figure 1 As shown, the frame structure is divided into five levels: radio frame, half frame, subframe, time slot, and symbol. Among them, a radio frame is 10ms in length, a radio frame is composed of two half frames, each half frame is 5ms in length, a half frame is composed of 5 subframes, each subframe is 1ms in length, and one subframe is composed of It is composed of two time slots, and the length of each time slot is 0.5ms. In each time slot, there are 7 single carrier frequency division multiple access (SC-FDMA) symbols when the regular cyclic prefix is ​​used, and there are 6 SC-...

AI Technical Summary

Problems solved by technology

This requires consideration of how to deal with the transmission of PUCCH and/or SRS on multiple component carrier

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