Uplink channel power control method, device and system

Abstract

The present invention is applicable to the communication field, and provides an uplink channel power control method and device, comprising: comparing a preamble transmission parameter with at least one preset parameter threshold to obtain a comparison result, and determining a channel priority according to the comparison result; When multiple uplink channels need to be transmitted at the same time, the transmit power of the multiple uplink channels is controlled according to the channel priority; the multiple uplink channels include the PRACH. The present invention adopts a non-fixed strategy for the ranking of PRACH in the channel priority, by comparing the transmission parameter of the preamble with the preset parameter threshold, or according to the signaling of the receiving base station to determine the ranking of the PRACH in the channel priority, thereby Power control is performed on uplink channel transmission, which avoids the situation that the UE transmit power exceeds its maximum transmit power or reaches the interference level, and can prevent power limitation and interference limitation.

Description

Technical field [0001] The present invention belongs to the field of communications, and in particular relates to a method, device and system for uplink channel power control. Background technique [0002] 3rd Generation Partnership Program (3 rd The Long Term Evolution-Advanced (LTE-A) Rel-10 / 11 technology of Generation Partnership Project, 3GPP) is an enhancement of the LTERel-8 technology, which has a higher bandwidth requirement than the LTE system and supports a peak data rate of up to 1G. In order to meet the corresponding bandwidth requirements, the LTE-A system uses Component Aggregation (CA) technology as its method to expand the system bandwidth, and uses a large number of Multiple-Input Multiple-Output (MIMO) enhancement technologies and adaptive technologies To improve data rate and system performance. [0003] In the above scenario, a user equipment (User Equipment, UE) can support up to 5 component carriers, and the uplink channels of the LTE system usually include p...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide a power control method for an uplink channel, aiming at solving the problem that when the PRACH channel and other channels on the SCell are simultaneously transmitted in a subframe, the transmission power of the UE may easily exceed its maximum transmission power, resulting in Power limited, or problems reaching interference levels that cause interference to be limited

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