Phase-based ranging method and related apparatus
AssigneeHuawei Technologies Co., Ltd.
InventorsWei Wang, Heng Zhang
Life of this patent
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Abstract
A phase-based ranging method and a related apparatus are disclosed. The ranging method includes: receiving a first multi-tone signal sent by a second transceiver, where the first multi-tone signal includes N first single-frequency signals, the N first single-frequency signals are obtained through negotiation between a first transceiver and the second transceiver, and N is an integer greater than 1; performing down conversion on the first multi-tone signal based on each of the N first single-frequency signals to obtain N direct current (DC) signals, where each of the N first single-frequency signals corresponds to one of the N DC signals; and measuring a first phase of each of the N DC signals to obtain a first phase value sequence.
Claims19
An apparatus, which is a first transceiver or included in the first transceiver, comprising at least one processor;
- and
- a memory coupled to the at least one processor, wherein the memory is configured to store a computer program, and
- the at least one processor is configured to execute the computer program stored in the memory, to cause the apparatus to perform operations, comprising:
- receiving a first multi-tone signal sent by a second transceiver, wherein the first multi-tone signal comprises N first single-frequency signals, the N first single-frequency signals are obtained through negotiation between the first transceiver and the second transceiver, and N is an integer greater than 1;
- performing down conversion on the first multi-tone signal based on each of the N first single-frequency signals to obtain N direct current (DC) signals, wherein each of the N first single-frequency signals corresponds to one DC signal;
- and
- measuring a first phase of each of the N DC signals to obtain a first phase value sequence for calculating a distance between the first transceiver and the second transceiver, wherein the first phase comprises a phase shift value generated during transmission of a first single-frequency signal corresponding to each of the N DC signals from the second transceiver to the first transceiver, and the first phase value sequence comprises the first phase of each of the N DC signals.
An apparatus, which is a second transceiver or included in the second transceiver, comprising at least one processor and a memory configured to store a computer program, wherein
- the at least one processor is configured to execute the computer program stored in the memory, to cause the apparatus to perform operations, comprising:
- generating a first multi-tone signal based on N first single-frequency signals, wherein the N first single-frequency signals are obtained through negotiation between a first transceiver and the second transceiver, and N is an integer greater than 1;
- and
- sending the first multi-tone signal to the first transceiver for obtaining a first phase value sequence for calculating a distance between the first transceiver and the second transceiver, and the first phase value sequence comprises a phase shift value generated during transmission of each of the N first single-frequency signals from the second transceiver to the first transceiver.
A phase-based ranging system, comprising:
- a first transceiver, configured to:
- send a first multi-tone signal to M second transceivers, wherein the first multi-tone signal comprises N first single-frequency signals, the N first single-frequency signals are obtained through negotiation between the first transceiver and the M second transceivers, and N and M are integers greater than 1;
- each of the M second transceivers, configured to:
- perform down conversion on the first multi-tone signal based on each of the N first single-frequency signals to obtain N direct current (DC) signals, wherein each of the N first single-frequency signals corresponds to one of the N DC signals;
- and
- measure a first phase of each of the N DC signals to obtain a first phase value sequence, wherein the first phase comprises a phase shift value generated during transmission of a first single-frequency signal corresponding to the respective DC signal from the respective second transceiver to the first transceiver, and the first phase value sequence comprises the first phase of each of the N DC signals;
- and
- a computing device, configured to:
- calculate a distance between the first transceiver and each of the M second transceivers based on each of M first phase value sequences.
Dependencies are inferred from the claim text.