08559405 is referenced by 32 patents and cites 17 patents.

A base station configures a primary cell group and at least one secondary cell group in a wireless device. The wireless device transmits first uplink signals in the secondary cell group employing a reference secondary cell in the secondary cell group as a timing reference. The wireless device autonomously selects a new activated secondary cell in the secondary cell group as the timing reference. The new activated secondary cell is different from the reference secondary cell. The wireless device transmits second uplink signals in the secondary cell group employing the new activated secondary cell as the timing reference.

Title
Multicarrier wireless communications reference cell
Application Number
13/749688
Publication Number
8559405 (B2)
Application Date
January 25, 2013
Publication Date
October 15, 2013
Inventor
Esmael Hejazi Dinan
Herndon
VA, US
Agent
David Grossman
Esmael Dinan
Assignee
Ofinno Technologies
VA, US
IPC
H04J 3/00
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