Random access procedures using multiple active bandwidth parts
AssigneeComcast Cable Communications, LLC
InventorsAli Cirik, Esmael 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.
Claims36
A method comprising:
- activating, by a wireless device, at least two downlink bandwidth parts (BWPs) of a primary cell;
- sending, via an uplink BWP of a secondary cell, a random access preamble for a random access procedure;
- determining, based on at least one characteristic associated with the at least two active downlink BWPs of the primary cell, which active downlink BWP, of the at least two active downlink BWPs, to use for reception of a random access response for the random access procedure;
- and
- receiving, via the determined active downlink BWP, the random access response.
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:
- activate at least two downlink bandwidth parts (BWPs) of a primary cell;
- send, via an uplink BWP of a secondary cell, a random access preamble for a random access procedure;
- determine, based on at least one characteristic associated with the at least two active downlink BWPs of the primary cell, which active downlink BWP, of the at least two active downlink BWPs, to use for reception of a random access response for the random access procedure;
- and
- receive, via the determined active downlink BWP, the random access response.
A system comprising:
- a wireless device;
- and
- a base station;
- wherein the wireless device is configured to:
- activate at least two downlink bandwidth parts (BWPs) of a primary cell;
- send, via an uplink BWP of a secondary cell, a random access preamble for a random access procedure;
- and
- determine, based on at least one characteristic associated with the at least two active downlink BWPs of the primary cell, which active downlink BWP, of the at least two active downlink BWPs, to use for reception of a random access response for the random access procedure;
- and
- wherein the base station is configured to:
- send, to the wireless device and via the determined active downlink BWP, the random access response.
A non-transitory computer-readable medium storing instructions that, when executed, configure a wireless device to:
- activate at least two downlink bandwidth parts (BWPs) of a primary cell;
- send, via an uplink BWP of a secondary cell, a random access preamble for a random access procedure;
- determine, based on at least one characteristic associated with the at least two active downlink BWPs of the primary cell, which active downlink BWP, of the at least two active downlink BWPs, to use for reception of a random access response for the random access procedure;
- and
- receive, via the determined active downlink BWP, the random access response.
Dependencies are inferred from the claim text.