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1. (WO2017151187) LOW LATENCY PRACH DESIGN IN UNLICENSED SPECTRUM

Pub. No.:    WO/2017/151187    International Application No.:    PCT/US2016/054544
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Sep 30 01:59:59 CEST 2016
IPC: H04W 74/00
H04W 74/08
H04W 72/14
H04W 28/06
H04W 28/02
Applicants: INTEL IP CORPORATION
Inventors: YE, Qiaoyang
LIM, Seau S
NIU, Huaning
BHORKAR, Abhijeet
KWON, Hwan-Joon
JEON, Jeongho
Title: LOW LATENCY PRACH DESIGN IN UNLICENSED SPECTRUM
Abstract:
Methods for low latency PRACH design in unlicensed spectrum are generally described herein. An exemplary apparatus of User Equipment (UE) includes memory; and processing circuitry, the processing circuitry to perform a listen-before-talk (LBT) procedure on one or more channels of an unlicensed spectrum. The processing circuitry further to, in response to a clear channel assessment (CCA), encode a first message for a first transmission associated with a low latency random access (RA) procedure on the unlicensed spectrum. The first message includes a physical random-access channel (PRACH) preamble and a message part. The message part includes at least one of a cell radio network temporary identifier (C-RNTI), buffer status report (BSR) information, capability of the UE, and/or an identity of the UE. The processing circuitry further to, in response to receipt of an uplink (UL) grant based on the first step of low-latency RA procedure, encode UL data for transmission.