Position estimation based on non-reciprocity source information

A method of operating a user equipment (UE), comprising:

• performing one or more measurements associated with a first positioning reference signal (PRS) communicated on a first link direction from a wireless node to the UE;
• transmitting a second PRS on a second link direction to at least one wireless node;
• transmitting a measurement report associated with a position estimation procedure of the UE to a position estimation entity, the measurement report comprising measurement information associated with the one or more measurements of the first PRS;
• receiving, from the position estimation entity, an additional location information request that requests non-reciprocity source information associated with the first link direction, the second link direction, or both;
• determining whether any non-reciprocity source information associated with the first link direction, the second link direction, or both, is available in response to the additional location information request;
• and
• transmitting a response to the additional location information request based on the determination.

A method of operating a wireless node, comprising:

• transmitting a first positioning reference signal (PRS) to a user equipment (UE) on a first link direction from the wireless node to the UE;
• performing one or more measurements associated with a second PRS communicated on a second link direction from the UE to the wireless node;
• transmitting a measurement report associated with a position estimation procedure of the UE to a position estimation entity, the measurement report comprising measurement information associated with the one or more measurements of the second PRS;
• receiving, from the position estimation entity, an additional location information request that requests non-reciprocity source information associated with the first link direction, the second link direction, or both;
• determining whether any non-reciprocity source information associated with the first link direction, the second link direction, or both, is available in response to the additional location information request;
• and
• transmitting a response to the additional location information request based on the determination.

A position estimation entity, comprising:

• one or more memories;
• one or more transceivers;
• and
• one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to:
• receive, via the one or more transceivers, a first measurement report associated with a position estimation procedure of a user equipment (UE), the first measurement report comprising measurement information associated with one or more measurements of a first positioning reference signal (PRS) communicated on a first link direction from a wireless node to a user equipment (UE);
• receive, via the one or more transceivers, a second measurement report associated with the position estimation procedure of the UE, the second measurement report comprising measurement information associated with one or more measurements of a second PRS communicated on a second link direction from the UE to the wireless node;
• determine a non-reciprocity condition between the first link direction and the second link direction;
• transmit, via the one or more transceivers, at least one additional location information request that requests non-reciprocity source information associated with the first link direction, the second link direction, or both, in response to the determination of the non-reciprocity condition;
• receive, via the one or more transceivers, at least one response comprising the non-reciprocity source information in response to the at least one additional location information request;
• and
• derive a position estimate of the UE based on the first measurement report, the second measurement report, and the non-reciprocity source information of the at least one response.

A user equipment (UE), comprising:

• one or more memories;
• one or more transceivers;
• and
• one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to:
• perform one or more measurements associated with a first positioning reference signal (PRS) communicated on a first link direction from a wireless node to the UE;
• transmit, via the one or more transceivers, a second PRS on a second link direction to at least one wireless node;
• transmit, via the one or more transceivers, a measurement report associated with a position estimation procedure of the UE to a position estimation entity, the measurement report comprising measurement information associated with the one or more measurements of the first PRS;
• receive, via the one or more transceivers, from the position estimation entity, an additional location information request that requests non-reciprocity source information associated with the first link direction, the second link direction, or both;
• determine whether any non-reciprocity source information associated with the first link direction, the second link direction, or both, is available in response to the additional location information request;
• and
• transmit, via the one or more transceivers, a response to the additional location information request based on the determination.

A wireless node, comprising:

• one or more memories;
• one or more transceivers;
• and
• one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to:
• transmit, via the one or more transceivers, a first positioning reference signal (PRS) to a user equipment (UE) on a first link direction from the wireless node to the UE;
• perform one or more measurements associated with a second PRS communicated on a second link direction from the UE to the wireless node;
• transmit, via the one or more transceivers, a measurement report associated with a position estimation procedure of the UE to a position estimation entity, the measurement report comprising measurement information associated with the one or more measurements of the second PRS;
• receive, via the one or more transceivers, from the position estimation entity, an additional location information request that requests non-reciprocity source information associated with the first link direction, the second link direction, or both;
• determine whether any non-reciprocity source information associated with the first link direction, the second link direction, or both, is available in response to the additional location information request;
• and
• transmit, via the one or more transceivers, a response to the additional location information request based on the determination.