US Patent No. 10,798,747


Patent No. 10,798,747
Issue Date October 06, 2020
Title Simple Rach (srach)
Inventorship Neil McGowan, Stittsville (CA)
Marthinus Willem Da Silveira, Ottawa (CA)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,798,747

1. A method of operation of a wireless device to perform random access in a cellular communications network, comprising:transmitting a random access preamble on a physical random access channel in an uplink from the wireless device to a radio access node in the cellular communications network, the random access preamble being based on a base random access sequence, the physical random access channel having a subcarrier frequency spacing that is equal to a subcarrier frequency spacing in one or more other channels of the uplink, wherein the subcarrier frequency spacing of both the physical random access channel and the one or more other channels of the uplink is X·15 kilohertz, wherein a bandwidth of the physical random access channel is X·M·15 kilohertz, where X?1, and wherein a length of the base random access sequence is less than or equal to M; and
in response to transmitting the random access preamble, receiving a random access response from the radio access node.