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US 12,004,227 B2Granted
Uplink carrier selection based on power threshold and speed
AssigneeOfinno, LLC
InventorsKyungmin Park, Esmael Hejazi Dinan, Hyoungsuk Jeon, Hua Zhou, Alireza Babaei, Ali Cagatay Cirik
Life of this patent
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Abstract
A wireless device receives at least one power threshold for selecting one of a first uplink carrier or a second uplink carrier of a cell. The wireless device selects, based on the at least one power threshold and a speed of the wireless device, one of the first uplink carrier and the second uplink carrier as a selected uplink carrier. The wireless device transmits a random access preamble via the selected uplink carrier.
Claims20
A method comprising:
- receiving, by a wireless device, a power threshold and a scaling factor for selecting one of a first uplink carrier or a second uplink carrier of a cell;
- scaling the power threshold by the scaling factor based on a comparison of a speed of the wireless device and a speed-threshold value;
- determining signal powers of the first and the second uplink carriers based on received reference signals;
- comparing the determined signal powers to the power threshold;
- selecting, based on the comparison, one of the first uplink carrier and the second uplink carrier as a selected uplink carrier;
- and
- transmitting a random access preamble via the selected uplink carrier.
4 more elements
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 perform operations comprising:
- receiving a power threshold and a scaling factor for selecting one of a first uplink carrier or a second uplink carrier of a cell;
- scaling the power threshold by the scaling factor based on a comparison of a speed of the wireless device and a speed-threshold value;
- determining signal powers of the first and the second uplink carriers based on received reference signals;
- comparing the determined signal powers to the power threshold;
- selecting, based on the comparison, one of the first uplink carrier and the second uplink carrier as a selected uplink carrier;
- and
- transmitting a random access preamble via the selected uplink carrier.
6 more elements
A system comprising:
- a base station comprising:
- one or more first processors;
- and first memory storing first instructions that, when executed by the one or more first processors, cause the base station to
- transmit a power threshold, a scaling factor, and a reference signal for selecting one of a first uplink carrier or a second uplink carrier of a cell;
- and
- a wireless device comprising:
- one or more second processors;
- and second memory storing second instructions that, when executed by the one or more second processors, cause the wireless device to:
- receive the power threshold, the scaling factor, and the reference signal;
- scale the power threshold by the scaling factor based on a comparison of a speed of the wireless device and a speed-threshold value;
- determine signal powers of the first and the second uplink carriers based on received reference signals;
- compare the determined signal powers to the power threshold;
- select, based on the comparison, one of the first uplink carrier and the second uplink carrier as a selected uplink carrier;
- and
- transmit a random access preamble via the selected uplink carrier.
12 more elements
Dependencies are inferred from the claim text.