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US 2019/0357260 A1Published application
Random Access Procedures Using Multiple Active Bandwidth Parts
AssigneeComcast Cable Communications, LLC
InventorsAli 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 of a primary cell and a secondary cell, wherein the primary cell comprises a plurality of downlink bandwidth parts (BWPs);
- activating at least two downlink BWPs of the plurality of downlink BWPs;
- sending a random access preamble for a random access procedure;
- determining a downlink BWP, of the at least two downlink BWPs, for monitoring for a random access response to the random access preamble;
- monitoring the determined BWP for the random access response;
- and
- receiving, via the determined downlink BWP, the random access response.
4 more elements
A method comprising:
- receiving, by a wireless device, one or more configuration parameters of a cell, wherein the cell comprises a plurality of uplink bandwidth parts (BWPs);
- activating at least two uplink BWPs of the plurality of uplink BWPs;
- determining an uplink BWP, of the at least two uplink BWPs, for a random access procedure;
- and
- sending, via the uplink BWP, a random access preamble.
2 more elements
A method comprising:
- receiving, by a wireless device, one or more configuration parameters of a primary cell and a secondary cell, wherein the primary cell comprises a plurality of bandwidth parts (BWPs);
- activating at least two BWPs of the plurality of BWPs;
- determining, based on one or more criteria and from the at least two BWPs, a first activated BWP for a random access procedure and a second activated BWP for the random access procedure;
- sending, via the first activated BWP, a random access preamble for the random access procedure;
- monitoring the second activated BWP for a random access response;
- and
- receiving, via the second activated BWP, the random access response.
4 more elements
Dependencies are inferred from the claim text.