A method and device for determining downlink frequency selection scheduling resources

Abstract

The invention discloses a method for determining a downlink frequency selection scheduling resource and a device, which aim at selecting a physical resource block corresponding to a subband with maximal subband channel quality indicator (CQI) value or with highest multi-channel server (MCS) grade value of the subband CQI information when the downlink frequency selection scheduling resource is determined, so a good channel condition can be guaranteed, and the downlink throughput can be improved. The method comprises the steps that: the present subband channel quality indicator (CQI) information reported by a user terminal is received by a basic station, a burst packet (BP) corresponding to the subband is determined according to the present subband CQI information, and the CQI value of the BP corresponding to the subband is updated; other subbands being attributive to the same broadband frequency band with the subband are determined, and the subband CQI value corresponding to other subbands is reduced; and a subband with the highest CQI value is determined from the subbands of the BP, and a resource block group (RBG) corresponding to the determined subband is determined as the downlink frequency selection scheduling resource corresponding to the BP.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for determining downlink frequency selection scheduling resources. Background technique [0002] According to the 3GPP 36.211 protocol, the user terminal (UE) periodically feeds back a downlink CQI (Channel Quanltity Indicator, channel quality index) to the base station on a PUCCH (Physical Uplink Control Channel, physical uplink control channel), and the downlink CQI is used to indicate the UE's satisfaction with the current downlink channel. [0003] Currently, in the LTE-TDD system, the modes that support periodic reporting of CQI information on the PUCCH can be shown in Table 1 below: [0004] Table 1 is a list of modes for reporting CQI information on PUCCH [0005] [0006] According to the protocol 3GPP 36.213, the downlink system bandwidth is divided into sub-bands, and classify the N sub-bands into J BPs (Bandwidth Parts, broadband frequency b...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the channel condition of the RBG corresponding to the subband currently reporting the CQI is better, so the existing technical solution is used to select the probability of selecting the RBG corresponding to the subband currently reporting the CQI when performing downlink frequency selection scheduling for each BP It is about 25% or 33%, so there is a probability of about 75% or 67% to select the RBG corresponding to the subband with poor channel conditions, so there is a high probability of low downlink throughput

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