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US 10,321,420 B2Granted
Uplink transmission timing of a wireless device
AssigneeOfinno, LLC
InventorEsmael Hejazi Dinan
Life of this patent
Estimating the term…
Abstract
A wireless device receives at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of timing advance groups (TAGs). The wireless device selects a first cell in a TAG according to a criterion. The TAG comprises one or more licensed cells and one or more unlicensed cells. The criterion comprises the first cell being a licensed cell. The wireless device transmits uplink signals in the TAG. Transmission timing of the uplink signals is derived employing the first cell as a timing reference cell.
Claims18
A method comprising:
- receiving, by a wireless device, at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of timing advance groups (TAGs) comprising:
- a primary TAG comprising a primary cell;
- and
- a secondary TAG comprising a plurality of secondary cells, the plurality of secondary cells comprising one or more licensed secondary cells and one or more unlicensed secondary cells;
- receiving at least one media access control (MAC) activation command to activate the one or more licensed secondary cells and the one or more unlicensed secondary cells;
- selecting a first secondary cell in the secondary TAG as a timing reference cell for the secondary TAG based on:
- the first secondary cell being an activated secondary cell;
- the first secondary cell being a licensed secondary cell;
- and
- the first secondary cell being in the secondary TAG;
- and
- transmitting uplink signals via the one or more licensed secondary cells and the one or more unlicensed secondary cells in the secondary TAG, wherein transmission timing of the uplink signals is derived employing the first secondary cell as the timing reference cell.
9 more elements
A wireless device comprising:
- one or more processors;
- and
- memory storing instructions that, when executed by the one or more processors, cause the wireless device to:
- receive at least one control message comprising configuration parameters of a plurality of cells grouped into a plurality of timing advance groups (TAGs) comprising:
- a primary TAG comprising a primary cell;
- and
- a secondary TAG comprising a plurality of secondary cells, the plurality of secondary cells comprising one or more licensed secondary cells and one or more unlicensed secondary cells;
- receive at least one media access control (MAC) activation command to activate the one or more licensed secondary cells and the one or more unlicensed secondary cells;
- select a first secondary cell in the secondary TAG as a timing reference cell for the secondary tag based on:
- the first secondary cell being an activated secondary cell;
- the first secondary cell being a licensed secondary cell;
- and
- the first secondary cell being in the secondary TAG;
- and
- transmit uplink signals via the one or more licensed secondary cells and the one or more unlicensed secondary cells in the secondary TAG, wherein transmission timing of the uplink signals is derived employing the first secondary cell as the timing reference cell.
12 more elements
Dependencies are inferred from the claim text.