Random Access Procedures Using Multiple Active Bandwidth Parts
AssigneeComcast Cable Communications, LLC
InventorsAli Cagatay Cirik, Esmael Hejazi Dinan, Hua Zhou, Hyoungsuk Jeon, Alireza Babaei
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Abstract
Wireless communications using multiple active resources (e.g., bandwidth parts (BWP)) are described. A predetermined rule may be used to determine on which downlink (DL) BWP of multiple active DL BWPs, and/or on which uplink (UL) BWP of multiple active UL BWPs, a message is to be sent. A wireless device and/or a base station may reduce the quantity of active DL BWPs and/or active UL BWPs to monitor for a response.
Claims20
A method comprising:
- receiving, by a wireless device, one or more configuration parameters for a plurality of bandwidth parts (BWPs) of a first cell;
- activating:
- a first BWP associated with a first random-access response (RAR) monitoring window;
- and
- a second BWP, of the first cell, associated with a second RAR monitoring window;
- starting, based on sending via a second cell at least one preamble for a random access procedure, the first RAR monitoring window and the second RAR monitoring window for monitoring a random access response to the at least one preamble;
- and
- sending, based on determining that the first RAR monitoring window and the second RAR monitoring window have expired, at least one second preamble.
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 one or more configuration parameters for a plurality of bandwidth parts (BWPs) of a first cell;
- activate:
- a first BWP associated with a first random-access response (RAR) monitoring window;
- and
- a second BWP, of the first cell, associated with a second RAR monitoring window;
- start, based on sending via a second cell at least one preamble for a random access procedure, the first RAR monitoring window and the second RAR monitoring window for monitoring a random access response to the at least one preamble;
- and
- send, based on determining that the first RAR monitoring window and the second RAR monitoring window have expired, at least one second preamble.
One or more non-transitory computer readable media storing instructions that, when executed cause:
- receiving one or more configuration parameters for a plurality of bandwidth parts (BWPs) of a first cell;
- activating:
- a first BWP associated with a first random-access response (RAR) monitoring window;
- and
- a second BWP, of the first cell, associated with a second RAR monitoring window;
- starting, based on sending via a second cell at least one preamble for a random access procedure, the first RAR monitoring window and the second RAR monitoring window for monitoring a random access response to the at least one preamble;
- and
- sending, based on determining that the first RAR monitoring window and the second RAR monitoring window have expired, at least one second preamble.
Dependencies are inferred from the claim text.