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1. (WO2018085726) PERFORMING 2-STEP RANDOM ACCESS CHANNEL (RACH) PROCEDURES

Pub. No.:    WO/2018/085726    International Application No.:    PCT/US2017/060053
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Sat Nov 04 00:59:59 CET 2017
IPC: H04W 74/08
H04W 36/00
H04W 48/10
H04W 68/00
Applicants: INTEL IP CORPORATION
Inventors: LIM, Seau
YIU, Candy
PHUYAL, Umesh
JEONG, Kyeongin
HEO, Youn Hyong
Title: PERFORMING 2-STEP RANDOM ACCESS CHANNEL (RACH) PROCEDURES
Abstract:
Techniques described herein may increase the efficiency and load capacity of a telecommunication network by enabling successful 2- Step Random Access Channel RACH procedures to be implemented with greater frequency. A base station may determine, based on network conditions (e.g., congestion) types of User Equipment UE (101) that may be permitted to perform 2-Step RACH procedures (330, 440, 550, 640). The types of UE permitted may include UEs in a current state of operation (e.g., an idle or inactive mode), UEs capable of a certain type of communication (e.g., Ultra-Reliable-Low Latency Communication (URLLC), and UEs involved in time-sensitive communications (e.g., emergency calls). The base station may indicate which UEs are permitted to perform 2-Step RACH procedures via handover messages, broadcasting signals, dedicated signaling, and paging procedures. UEs may simultaneously perform 2-Step and 4-Step RACH procedures and operate based on which procedure is completed first (340, 450, 560, 650).