US Patent No. 10,194,464

RANDOM ACCESS CONFIGURATION FOR MTC OPERATION


Patent No. 10,194,464
Issue Date January 29, 2019
Title Random Access Configuration For Mtc Operation
Inventorship Yufei Blankenship, Kildeer, IL (US)
Johan Bergman, Stockholm (SE)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,194,464

1. A method, performed by a user equipment in a wireless network, the method comprising:receiving information indicating Random Access Channel (RACH) physical resources, said information indicating a first set of RACH physical resources for transmission of a random access preamble for random access attempts that use a first number of repetitions of the random access preamble for each random access attempt and a second set of RACH physical resources for transmission of a random access preamble for random access attempts that use a second, different, number of repetitions of the random access preamble for each random access attempt;
selecting a set of RACH physical resources corresponding to transmission of a random access preamble with the first number of repetitions; and
transmitting, for a single random access attempt, a random access preamble with the first number of random access preamble repetitions using at least the selected set of RACH physical resources, wherein the transmitted random access preamble with the first number of random access preamble repetitions is transmitted according to a frequency hopping pattern, and wherein a starting frequency location of the frequency hopping pattern is randomly selected by the user equipment.