Method and system for ultra-wideband two-way ranging
AssigneeQorvo US, Inc.
InventorBilly Verso
Life of this patent
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Abstract
A method for channel impulse response (CIR) validation for two-way ranging (TWR) in an ultra-wide band (UWB) communication system. The method includes: transmitting, by a first UWB device, a first cipher code; generating, by a second UWB device, a first CIR computed from an accumulation of the first cipher code; transmitting, by the second UWB device, a second cipher code in response to receiving the first cipher code; generating, by the first UWB device, a second CIR computed from an accumulation of the second cipher code; and comparing, by one of the first UWB device or the second UWB device, the second CIR with the first CIR.
Claims20
A method for channel impulse response (CIR) validation for two-way ranging (TWR) in an ultra-wide band (UWB) communication system, the method comprising:
- receiving, from a UWB device, a first cipher code;
- generating a first CIR corresponding to characteristics of a UWB channel from an accumulation of the first cipher code;
- transmitting, to the UWB device, a second cipher code in response to receiving the first cipher code;
- receiving, from the UWB device, a second CIR computed from an accumulation of the second cipher code;
- and
- comparing the second CIR with the first CIR.
A method for channel impulse response (CIR) validation for two-way ranging (TWR) in an ultra-wide band (UWB) communication system, the method comprising:
- transmitting a first cipher code to a UWB device;
- receiving a second cipher code from the UWB device;
- generating a first CIR corresponding to characteristics of a UWB channel from an accumulation of the second cipher code;
- receiving, from the UWB device, a second CIR computed from an accumulation of the first cipher code;
- and
- comparing the second CIR with the first CIR.
An ultra-wide band (UWB) device for two-way ranging (TWR), comprising:
- a transceiver operable to perform a UWB communication;
- a memory for storing program instructions, cipher codes, and channel-impulse responses accumulated from the cipher codes;
- and
- a processor coupled to the transceiver and to the memory, wherein the processor is operable to execute the program instructions, which, when executed by the processor, cause the UWB device to perform the following operations:
- receiving, from another UWB device, a first cipher code;
- generating a first CIR corresponding to characteristics of a UWB channel from an accumulation of the first cipher code;
- and
- transmitting, to the other UWB device, a second cipher code corresponding to the characteristics of UWB channel in response to receiving the first cipher code.
Dependencies are inferred from the claim text.