Patent ID: 11950295
Assignee: VIVO MOBILE COMMUNICATION CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A random access channel RACH resource selection method, performed by user equipment and comprising:
after a random access process is triggered, selecting, based on obtained RACH resource configuration information, a physical random access channel PRACH transmit unit used for sending a preamble or a preamble and data;
wherein the RACH resource configuration information comprises at least one of the following:
preamble format information of PRACH resources available for selection;
time domain location information of PRACH resources available for selection;
frequency domain location information of PRACH resources available for selection;
a time window corresponding to PRACH transmit units available for selection, wherein a first PRACH transmit unit in the time window is a first valid PRACH transmit unit after the random access process is triggered;
N PRACH transmit units available for selection, wherein a first PRACH transmit unit in the N PRACH transmit units is a first valid PRACH transmit unit after the random access process is triggered, and N is a positive integer; and
a correspondence between a RACH trigger time and a PRACH transmit set, wherein the PRACH transmit set comprises at least one PRACH transmit unit;
wherein the RACH resource configuration information further comprises:
selecting the PRACH transmit unit from the N PRACH transmit units based on an agreed probability;
wherein the N PRACH transmit units are N consecutive PRACH transmit units.