公开(公告)号：US10966164B2

公开(公告)日：2021-03-30

申请号：US16622429

申请日：2018-06-01

Applicant: INTEL IP CORPORATION

Inventor： Joonyoung Cho ,  Debdeep Chatterjee ,  Gang Xiong ,  Jeongho Jeon ,  Alexei Vladimirovich Davydov ,  Younjun Kwak ,  Dae Won Lee ,  Gregory Vladimirovich Morozov ,  Seunghee Han

IPC: H04W52/32 ,  H04W74/08 ,  H04W52/36

Abstract: A user equipment (UE) can include processing circuitry configured to, during a physical random access channel (PRACH) procedure, select a first synchronization signal (SS) block from a plurality of SS blocks within a received SS burst set, the SS block selected based on signal quality measurements of the plurality of SS blocks. A PRACH preamble is encoded for transmission to a base station using a PRACH resource subset corresponding to the selected SS block, the transmission using a UE transmit (Tx) beam of a plurality of available Tx beams and transmit power indicated by a power ramping counter. Upon failing to detect a random access response (RAR) from the base station, a second SS block is selected, the power ramping counter is reset, and the PRACH preamble is encoded for re-transmission using a second PRACH resource subset and transmit power indicated by the reset power ramping counter.