US Patent No. 10,694,542

CLASSIFICATION OF USER EQUIPMENT USING EXTENDED SET OF RANDOM ACCESS PREAMBLES


Patent No. 10,694,542
Issue Date June 23, 2020
Title Classification Of User Equipment Using Extended Set Of Random Access Preambles
Inventorship Oskar Mauritz, Johanneshov (SE)
Assignee Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)

Claim of US Patent No. 10,694,542

1. A method of operating a radio access node, comprising:receiving a random access preamble from a wireless communication device;
determining whether the received random access preamble belongs to a standard set of random access preambles or an additional set of random access preambles, wherein the standard set corresponds to at least one standard class of wireless communication device and the additional set corresponds to at least one non-standard class of wireless communication device; and
in response to determining that the random access preamble belongs to the additional set of random access preambles, identifying the wireless communication device as belonging to a non-standard class of wireless communication device, and transmitting information to the wireless communication device based on the non-standard class identification,
wherein the additional set of random access preambles are generated by unused cyclic shifts in a last root sequence used to generate the standard set of random access preambles.