Network assisted time reversal radio frequency sensing
AssigneeQUALCOMM Incorporated
InventorsWeimin DUAN, Hyojin LEE, Bala RAMASAMY
Life of this patent
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Abstract
Techniques are provided for implementing time reversed reference signals for radio frequency (RF) sensing operations in a communication system. An example method for generating channel reciprocity information for radio frequency sensing operations includes receiving radio frequency sensing information from a sensing node, generating a channel reciprocity prediction based at least in part on the radio frequency sensing information and a channel reciprocity prediction model, and providing an indication for time reversal precoding to the sensing node based on the channel reciprocity prediction.
Claims30
A method for generating time reversal precoding information for radio frequency sensing operations, comprising:
- determining channel reciprocity information for a sensing channel associated with a first sensing node and a second sensing node:
- generating time reversal precoding information based at least in part on the channel reciprocity information;
- and
- providing the time reversal precoding information to at least one of the first sensing node and the second sensing node.
A method for training a channel reciprocity prediction model, comprising:
- transmitting a first radio frequency sensing signal:
- receiving a first channel metric based on the first radio frequency sensing signal:
- receiving a second radio frequency sensing signal:
- determining a second channel metric based on the second radio frequency sensing signal;
- and
- providing indications of the first channel metric and the second channel metric to a network entity.
An apparatus, comprising:
- at least one memory:
- at least one transceiver:
- at least one processor communicatively coupled to the at least one memory and the at least one transceiver, and configured to:
- determine channel reciprocity information for a sensing channel associated with a first sensing node and a second sensing node:
- generate time reversal precoding information based at least in part on the channel reciprocity information;
- and
- provide the time reversal precoding information to at least one of the first sensing node and the second sensing node.
An apparatus, comprising:
- at least one memory:
- at least one transceiver:
- at least one processor communicatively coupled to the at least one memory and the at least one transceiver, and configured to:
- transmit a first radio frequency sensing signal:
- receive a first channel metric based on the first radio frequency sensing signal:
- receive a second radio frequency sensing signal:
- determine a second channel metric based on the second radio frequency sensing signal;
- and
- provide indications of the first channel metric and the second channel metric to a network entity.
Dependencies are inferred from the claim text.