Coded anchors for simple localization

An apparatus comprising:

• a processor circuit and a memory circuit, wherein the memory is arranged to store instructions for the processor circuit,
• wherein the processor circuit is arranged to transmit a plurality of coded beams to a receiver via a plurality of non-line-of-sight paths via a plurality of reflectors,
• wherein the processor circuit is arranged to use a first coding of the a first one of the plurality of coded beams to identify a first reflector,
• wherein the processor circuit is arranged to receive a portion of signal components of a signal via the plurality of reflectors or at least one propagation parameter of a portion of the plurality of coded beams,
• wherein the processor circuit is arranged to determine the location of the receiver based on a multilateration of the portion of the signal components of the signal or based on propagation parameters for the portion of the plurality of coded beams and a location of a portion of the plurality of reflectors, or a combination thereof,
• wherein the processor circuit is arranged to determine whether the receiver is in a same room in which the transmitter operates, by comparing a measured signal strength of at least one of the plurality of non-line-of-sight path originating from a known reflector with an expected threshold;
• or by comparing measured signal strengths and measured times of arrival of line-of-sight and at least one of the plurality of non line-of-sight paths to the receiver;
• or by comparing the determined location of the receiver with a mapped geometry of the room;
• or by determining visibility of reflectors within the room using a scene mapping system.

A method comprising:

• receiving a plurality of coded beams at a receiver via a plurality of non-line-of-sight paths from a plurality of reflectors,
• wherein a first code of the plurality of coded beams identifies a first reflector;
• measuring at least one propagation parameter for a portion of the plurality of coded beams;
• determining the location of the receiver based on at least one propagation parameter and a location of identified reflectors,
• wherein the at least one propagation parameter is for the portion of the plurality of received coded beams;
• and
• determining whether the receiver is in a same room in which the transmitter operates, by comparing a measured signal strength of at least one of the plurality of non-line-of-sight path originating from a known reflector with an expected threshold;
• or by comparing measured signal strengths and measured times of arrival of line-of-sight and at least one of the plurality of non line-of-sight paths to the receiver;
• or by comparing the determined location of the receiver with a mapped geometry of the room;
• or by determining visibility of reflectors within the room using a scene mapping system.

A method comprising:

• transmitting a plurality of coded beams to a receiver via a plurality of non-line-of sight paths via a plurality of reflectors;
• using a code of a first one of the plurality of coded beams to identify a first reflector;
• receiving a portion of signal components of a signal via the plurality of reflectors or at least one propagation parameter of a portion of the plurality of coded beams;
• determining the location of the receiver based on a multilateration of the signal components of the signal or based on propagation parameters for the portion of the plurality of coded beams and a location of a portion of the plurality of reflectors, or a combination thereof;
• and
• determining whether the receiver is in a same room in which the transmitter operates, by comparing a measured signal strength of at least one of the plurality of non-line-of-sight path originating from a known reflector with an expected threshold;
• or by comparing measured signal strengths and measured times of arrival of line-of-sight and at least one of the plurality of non line-of-sight paths to the receiver;
• or by comparing the determined location of the receiver with a mapped geometry of the room;
• or by determining visibility of reflectors within the room using a scene mapping system.