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US 8,619,727 B1Granted
Timing in a multicarrier wireless device
AssigneeOfinne Technologies, LLC
InventorEsmael Hejazi Dinan
Life of this patent
Estimating the term…
Abstract
A wireless device receives a control command causing transmission of a random access preamble on a reference secondary cell in a secondary cell group. The reference secondary cell is employed as a timing reference to transmit first uplink signals in the secondary cell group. The wireless device receives a random access response comprising a timing advance command for the secondary cell group. The wireless device, autonomously and when a predefined condition is met, selects a new activated secondary cell in the secondary cell group as the timing reference.
Claims20
A method for use in a wireless device, the method comprising:
- a) receiving at least one message causing configuration of:
- i) a primary cell and one or more secondary cells;
- and
- ii) a plurality of cell groups comprising a primary cell group and a secondary cell group comprising a subset of said one or more secondary cells;
- b) receiving a control command causing transmission of a random access preamble on random access resources of a reference secondary cell in said secondary cell group;
- c) receiving a random access response on said primary cell in said primary cell group, said random access response comprising a timing advance command, said timing advance command implicitly corresponding to said secondary cell group and being applicable only to said secondary cell group;
- d) transmitting first uplink signals in said secondary cell group employing said reference secondary cell used for said random access preamble transmission as a timing reference;
- e) selecting, autonomously and when a predefined condition is met, a new activated secondary cell in said secondary cell group as said timing reference;
- and
- f) transmitting second uplink signals in said secondary cell group employing said new activated secondary cell as said timing reference.
7 more elements
A method for use in a wireless device, the method comprising:
- a) receiving at least one message causing configuration of:
- i) a primary cell and one or more secondary cells;
- and
- ii) a plurality of cell groups comprising a primary cell group and a secondary cell group;
- b) receiving a control command causing transmission of a random access preamble on a reference secondary cell in said secondary cell group, said reference secondary cell used for said random access preamble transmission to be employed as a timing reference to transmit first uplink signals in said secondary cell group;
- c) receiving a random access response on said primary cell in said primary cell group, said random access response comprising a timing advance command, said timing advance command implicitly corresponding to said secondary cell group and being applicable only to said secondary cell group;
- and
- d) selecting, autonomously and when a predefined condition is met, a new activated secondary cell in said secondary cell group as said timing reference to transmit second uplink signals in said secondary cell group.
5 more elements
A wireless device comprising:
- a) one or more communication interfaces;
- b) one or more processors;
- and
- c) memory storing instructions that, when executed, cause said wireless device to:
- i) receive at least one message causing configuration of:
- (1) a primary cell and one or more secondary cells;
- and
- (2) a plurality of cell groups comprising a primary cell group and a secondary cell group;
- ii) receive a control command causing transmission of a random access preamble on a reference secondary cell in said secondary cell group, said reference secondary cell used for said random access preamble transmission to be employed as a timing reference to transmit first uplink signals in said secondary cell group;
- iii) receive a random access response on said primary cell in said primary cell group, said random access response comprising a timing advance command, said timing advance command implicitly corresponding to said secondary cell group and being applicable only to said secondary cell group;
- and
- iv) select, autonomously and when a predefined condition is met, a new activated secondary cell in said secondary cell group as said timing reference to transmit second uplink signals in said secondary cell group.
9 more elements
Dependencies are inferred from the claim text.