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US 2019/0357261 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.
Claims20
A method comprising:
- receiving, by a wireless device, one or more configuration parameters for downlink BWPs and for uplink BWPs;
- activating at least two downlink BWPs of the downlink BWPs and a first uplink BWP of the uplink BWPs;
- initiating a random access procedure via the first uplink BWP;
- determining that each of a downlink BWP-specific index of the at least two downlink BWPs is different from an uplink BWP-specific index of the first uplink BWP;
- determining, based on the determining that each downlink BWP-specific index is different from each of an uplink BWP-specific index of the first uplink BWP, a first downlink BWP of the at least two downlink;
- switching from the first downlink BWP to a second downlink BWP, of the downlink BWPs, associated with a second downlink BWP-specific index that is the same as the uplink BWP-specific index;
- and
- sending, via the first uplink BWP, a preamble.
5 more elements
A method comprising:
- receiving, by a wireless device, one or more configuration parameters comprising:
- downlink bandwidth part (BWP)-specific indexes for downlink BWPs;
- and
- uplink BWP-specific indexes for uplink BWPs;
- activating a first downlink BWP of the downlink BWPs and a first uplink BWP of the uplink BWPs;
- initiating a random access procedure via the first uplink BWP;
- determining that a downlink BWP-specific index of the first downlink BWP is different from an uplink BWP-specific index of the first uplink BWP;
- based on the determining, activating a second downlink BWP, of the downlink BWPs, associated with a second downlink BWP-specific index that is the same as the uplink BWP-specific index;
- and
- sending, via the first uplink BWP, a preamble.
7 more elements
A method comprising:
- receiving, by a wireless device, one or more configuration parameters comprising:
- downlink bandwidth part (BWP)-specific indexes for downlink BWPs;
- and
- uplink BWP-specific indexes for uplink BWPs;
- activating a first downlink BWP of the downlink BWPs and a first uplink BWP of the uplink BWPs;
- initiating a random access procedure via the first uplink BWP;
- determining that a downlink BWP-specific index of the first downlink BWP is different from an uplink BWP-specific index of the first uplink BWP;
- and
- based on the determining, performing at least one of:
- activating a second downlink BWP, of the downlink BWPs, associated with a second downlink BWP-specific index that is the same as the uplink BWP-specific index;
- deactivating the first downlink BWP;
- or
- switching from the first downlink BWP to the second downlink BWP.
10 more elements
Dependencies are inferred from the claim text.