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US 10,873,976 B2Granted
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.
Claims20
A method comprising:
- receiving, by a wireless device, one or more configuration parameters for a plurality of downlink BWPs and for a plurality of uplink BWPs;
- activating at least two downlink BWPs of the plurality of downlink BWPs and a first uplink BWP of the plurality of uplink BWPs;
- based on a determination that a first downlink BWP index associated with a first active downlink BWP and a second downlink BWP index associated with a second active downlink BWP are different from a third BWP index associated with the first uplink BWP, selecting the first active downlink BWP;
- switching from the first active downlink BWP to a third active downlink BWP, wherein the third active downlink BWP is associated with a fourth downlink BWP index that is the same as the third BWP index;
- and
- sending, via the first uplink BWP, a preamble for a random access procedure.
3 more elements
A method comprising:
- receiving, by a wireless device, one or more configuration parameters comprising:
- a plurality of downlink bandwidth part (BWP) indexes associated with a plurality of downlink BWPs;
- and
- a plurality of uplink BWP indexes associated with a plurality of uplink BWPs;
- activating a first downlink BWP of the plurality of downlink BWPs and a first uplink BWP of the plurality of uplink BWPs;
- determining that a downlink BWP index associated with the first downlink BWP is different from an uplink BWP index associated with the first uplink BWP;
- based on the determining, activating a second downlink BWP, of the plurality of downlink BWPs, associated with a second downlink BWP index that is the same as the uplink BWP index, wherein the first downlink BWP and the second downlink BWP are both active;
- and
- sending, via the first uplink BWP, a preamble for a random access procedure.
6 more elements
A method comprising:
- receiving, by a wireless device, one or more configuration parameters comprising:
- a plurality of downlink bandwidth part (BWP) indexes associated with a plurality of downlink BWPs;
- and
- a plurality of uplink BWP indexes associated with a plurality of uplink BWPs;
- activating a first downlink BWP of the plurality of downlink BWPs and a first uplink BWP of the plurality of uplink BWPs;
- determining that a downlink BWP index associated with the first downlink BWP is different from an uplink BWP index associated with the first uplink BWP;
- and
- based on the determining, activating a second downlink BWP, of the plurality of downlink BWPs, associated with a second downlink BWP index that is the same as the uplink BWP index, wherein:
- the first downlink BWP and the second downlink BWP are both active, or
- a third downlink BWP of the plurality of downlink BWPs and the second downlink BWP are both active based on the wireless device switching from the first downlink BWP to the third downlink BWP.
7 more elements
Dependencies are inferred from the claim text.