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US 2021/0176791 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, Kyungmin Park
Life of this patent
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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.
Claims24
A method comprising:
- activating, by a wireless device, a plurality of downlink bandwidth parts (BWPs) of a cell and an uplink BWP of the cell, wherein the plurality of downlink BWPs are associated with a plurality of downlink BWP indexes;
- based on the plurality of downlink BWP indexes being different from an uplink BWP index associated with the uplink BWP, switching from a first downlink BWP, of the plurality of downlink BWPs, to a second downlink BWP as an active BWP of the cell, wherein the second downlink BWP is associated with a downlink BWP index that is the same as the uplink BWP index;
- and
- sending, via the uplink BWP, a preamble for a random access procedure.
1 more element
A method comprising:
- activating, by a wireless device, a plurality of downlink BWPs and an uplink BWP, wherein the plurality of downlink BWPs are associated with a plurality of downlink BWP indexes;
- based on the plurality of downlink BWP indexes being different from an uplink BWP index associated with the uplink BWP, activating a first downlink BWP associated with a downlink BWP index that is the same as an uplink BWP index of the uplink BWP;
- and
- sending, via the uplink BWP, a preamble for a random access procedure.
1 more element
A method comprising:
- activating, by a wireless device, a plurality of downlink BWPs and an uplink BWP, wherein the plurality of downlink BWPs are associated with a plurality of downlink BWP indexes;
- and
- based on the plurality of downlink BWP indexes being different from an uplink BWP index associated with the uplink BWP, activating a first downlink BWP associated with a first downlink BWP index that is the same as the uplink BWP index, wherein:
- the first downlink BWP and the plurality of downlink BWPs are both active, or
- a second downlink BWP, of the plurality of downlink BWPs, and the first downlink BWP are both active based on the wireless device switching from the second downlink BWP to the first downlink BWP.
2 more elements
Dependencies are inferred from the claim text.