Patent 9204406 was granted and assigned to Ofinno Technologies on December, 2015 by the United States Patent and Trademark Office.
A wireless device receives message(s) configuring cell groups and transmissions of sounding reference signals. Sounding reference signals are configured to be transmitted in a subframe. The wireless device transmits at least one packet on at least one first cell in the subframe. The wireless device transmits a first subset of the sounding reference signals and drops a second subset of the sounding reference signals.