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US 12,114,369 B2Granted
Multicarrier communications employing time alignment timers
AssigneeComcast Cable Communications, LLC
InventorEsmael Hejazi Dinan
Life of this patent
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Abstract
Wireless communications for a plurality of cell groups are described. Uplink transmissions, such as uplink transport blocks, hybrid automatic repeat request (HARQ) transmission, and/or channel state information transmission, may be based on one or more time alignment timers associated with a cell group.
Claims44
A method comprising:
- receiving by a wireless device:
- a first value for a first time alignment timer (TAT) associated with a primary cell group;
- and
- a second value for a second TAT associated with a secondary cell group;
- and
- while the second TAT is expired and the first TAT is running:
- transmitting, for at least one activated cell of the secondary cell group, channel state information;
- and
- not performing particular uplink transmissions via the at least one activated cell of the secondary cell group.
6 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:
- a first value for a first time alignment timer (TAT) associated with a primary cell group;
- and
- a second value for a second TAT associated with a secondary cell group;
- and
- while the second TAT is expired and the first TAT is running:
- transmit, for at least one activated cell of the secondary cell group, channel state information;
- and
- not perform particular uplink transmissions via the at least one activated cell of the secondary cell group.
9 more elements
A non-transitory computer-readable medium storing instructions that, when executed, configure a wireless device to:
- receive:
- a first value for a first time alignment timer (TAT) associated with a primary cell group;
- and
- a second value for a second TAT associated with a secondary cell group;
- and
- while the second TAT is expired and the first TAT is running:
- transmit, for at least one activated cell of the secondary cell group, channel state information;
- and
- not perform particular uplink transmissions via the at least one activated cell of the secondary cell group.
6 more elements
A system comprising:
- a base station;
- and
- a wireless device,
- wherein the base station is configured to transmit:
- a first value for a first time alignment timer (TAT) associated with a primary cell group;
- and
- a second value for a second TAT associated with a secondary cell group, and
- wherein the wireless device is configured to:
- receive the first value for the first TAT and the second value for the second TAT;
- and
- while the second TAT is expired and the first TAT is running:
- transmit, for at least one activated cell of the secondary cell group, channel state information;
- and
- not perform particular uplink transmissions via the at least one activated cell of the secondary cell group.
11 more elements
Dependencies are inferred from the claim text.