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US 11,388,755 B2Granted
Uplink and downlink synchronization procedures
AssigneeComcast Cable Communications, LLC
InventorsAli Cirik, Esmael Dinan, Hua Zhou, Hyoungsuk Jeon, Alireza Babaei, Kyungmin Park
Life of this patent
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Abstract
Uplink and downlink synchronization procedures are described for wireless communications. A base station may send a reconfiguration message to a wireless device before a random access procedure. The reconfiguration message may set an active uplink index and an active downlink index to the same value.
Claims20
A method comprising:
- setting, for beam failure recovery, a first active downlink bandwidth part (BWP) index, associated with a first active downlink BWP of a cell, and a first active uplink BWP index, associated with a first active uplink BWP of the cell, to a same value;
- transmitting, by a base station, a radio resource control (RRC) reconfiguration message comprising:
- the first active downlink BWP index;
- and
- the first active uplink BWP index;
- receiving, via the first active uplink BWP, a random access preamble for beam failure recovery;
- and
- transmitting, via the first active downlink BWP, a random access response.
5 more elements
A method comprising:
- receiving, by a wireless device, a radio resource control (RRC) reconfiguration message comprising:
- a first active downlink bandwidth part (BWP) index of a first active downlink BWP of a cell;
- and
- a first active uplink BWP index of a first active uplink BWP of the cell, wherein the first active uplink BWP index and the first active downlink BWP index are set to a same value;
- transmitting, via the first active uplink BWP, a random access preamble for beam failure recovery;
- and
- receiving, via the first active downlink BWP, a random access response.
4 more elements
A method comprising:
- setting, by a base station and for beam failure recovery, one or more reconfiguration parameters to a same value, wherein the one or more reconfiguration parameters comprise:
- a first active downlink bandwidth part (BWP) index for a cell;
- and
- a first active uplink BWP index for the cell;
- and
- transmitting the one or more reconfiguration parameters of the cell.
3 more elements
Dependencies are inferred from the claim text.