US Patent No. 10,219,265

DOWNLINK SIGNAL RECEPTION METHOD AND USER EQUIPMENT, AND DOWNLINK SIGNAL TRANSMISSION METHOD AND BASE STATION


Patent No. 10,219,265
Issue Date February 26, 2019
Title Downlink Signal Reception Method And User Equipment, And Downlink Signal Transmission Method And Base Station
Inventorship Hyangsun You, Seoul (KR)
Kijun Kim, Seoul (KR)
Yunjung Yi, Seoul (KR)
Bonghoe Kim, Seoul (KR)
Assignee LG ELECTRONICS INC., Seoul (KR)

Claim of US Patent No. 10,219,265

1. A method for receiving a downlink signal, the method performed by a user equipment (UE) and comprising:receiving downlink control information (DCI) including modulation and coding scheme (MCS) information and including resource allocation information indicating one or more physical resource blocks (PRBs) allocated to the UE;
receiving downlink data through a physical downlink shared channel (PDSCH) mapped to the one or more PRBs allocated to the UE based on the DCI; and
determining a transport block size of the downlink data among a plurality of predefined transport block sizes, based on the MCS information and a number, NPRB?, of the PRBs allocated to the UE,
wherein, if the density of downlink reference signals is greater than a reference value, the transport block size is determined based on a number, NPRB, of reduced PRBs rather than on NPRB?,
wherein NPRB is determined based on a value obtained by multiplying a positive real number less than 1, ? by the NPRB?, and
wherein ? is determined based on a ratio, NRE?/NRE, of a number, NRE?, of resource elements excluding resource elements used to receive the downlink reference signals from NRE to a number, NRE, of resource elements excluding resource elements included in orthogonal frequency division multiplexing (OFDM) symbols used to transmit a physical downlink control channel (PDCCH) from resource elements in a resource block.