US Patent No. 10,694,562

OFF GRID RADIO SERVICE SYSTEM DESIGN


Patent No. 10,694,562
Issue Date June 23, 2020
Title Off Grid Radio Service System Design
Inventorship Li Su, San Jose, CA (US)
Assignee Apple Inc., Cupertino, CA (US)

Claim of US Patent No. 10,694,562

1. A method, comprising:by a first wireless device:
determining a number of synchronization signal repetitions to use for a transmission;
selecting a first root index value for a first portion of a synchronization signal based at least in part on the determined number of synchronization signal repetitions, wherein the first root index value for the synchronization signal indicates the number of synchronization signal repetitions transmitted by the first wireless device, wherein the first root index value comprises a root index value for a Zadoff-Chu sequence used as a primary synchronization signal (PSS) of the synchronization signal, wherein the synchronization signal further comprises a secondary synchronization signal (SSS), wherein the SSS also comprises a Zadoff-Chu sequence;
selecting a second root index value for the SSS, wherein the second root index value indicates a device identifier for the first wireless device; and
performing the transmission, comprising transmitting the determined number of synchronization signal repetitions.