Sidelink positioning: switching between round-trip-time and single-trip-time positioning

A first sidelink-enabled device for sidelink positioning determination and communication, the first sidelink-enabled device comprising:

• a transceiver;
• a memory;
• and
• one or more processing units communicatively coupled with the transceiver and the memory, the one or more processing units configured to:
• obtain data from one or more data sources indicative of one or more criteria for using either Round-Trip Time (RTT)-based positioning of a target node or Single-Sided (SS)-based positioning of the target node, wherein the one or more criteria comprise:
• whether relative positions over time between the first sidelink-enabled device and a second sidelink-enabled device fail to exhibit a threshold amount of angular changes;
• whether a respective speed sensor of the first sidelink-enabled device, the second sidelink-enabled device, or both, is determined to have a variance greater than a threshold value;
• whether the first sidelink-enabled device, second sidelink-enabled device, or both, has experienced a threshold amount of movement within a threshold amount of time;
• whether a relative distance between the first sidelink-enabled device and the second sidelink-enabled device has experienced less than a threshold amount of change within a threshold amount of time;
• or
• whether the respective local oscillator of the first sidelink-enabled device, second sidelink-enabled device, or both, has been synchronized or initialized within a threshold amount of time before positioning of the selected positioning type is to take place;
• or any combination thereof;
• select a positioning type from the group consisting of RTT-based positioning and SS-based positioning, based on the one or more criteria;
• and
• send a message via the transceiver to the second sidelink-enabled device, wherein the message includes information indicative of the selected positioning type.

A device for sidelink positioning determination and communication, the device comprising:

• means for obtaining data from one or more data sources indicative of one or more criteria for using either Round-Trip Time (RTT)-based positioning of a target node or Single-Sided (SS)-based positioning of the target node, wherein the one or more criteria comprise:
• whether relative positions over time between a first sidelink-enabled device and a second sidelink-enabled device fail to exhibit a threshold amount of angular changes;
• whether a respective speed sensor of the first sidelink-enabled device, the second sidelink-enabled device, or both, is determined to have a variance greater than a threshold value;
• whether the first sidelink-enabled device, second sidelink-enabled device, or both, has experienced a threshold amount of movement within a threshold amount of time;
• whether a relative distance between the first sidelink-enabled device and the second sidelink-enabled device has experienced less than a threshold amount of change within a threshold amount of time;
• or
• whether the respective local oscillator of the first sidelink-enabled device, second sidelink-enabled device, or both, has been synchronized or initialized within a threshold amount of time before positioning of the selected positioning type is to take place;
• or any combination thereof;
• means for selecting a positioning type from the group consisting of RTT-based positioning and SS-based positioning, based on the one or more criteria;
• and
• means for sending a message from the first sidelink-enabled device to the second sidelink-enabled device, wherein the message includes information indicative of the selected positioning type.

A non-transitory computer-readable medium storing instructions for sidelink positioning determination and communication, the instructions comprising code for:

• obtaining data from one or more data sources indicative of one or more criteria for using either Round-Trip Time (RTT)-based positioning of a target node or Single-Sided (SS)-based positioning of the target node, wherein the one or more criteria comprise:
• whether relative positions over time between a first sidelink-enabled device and a second sidelink-enabled device fail to exhibit a threshold amount of angular changes;
• whether a respective speed sensor of the first sidelink-enabled device, the second sidelink-enabled device, or both, is determined to have a variance greater than a threshold value;
• whether the first sidelink-enabled device, second sidelink-enabled device, or both, has experienced a threshold amount of movement within a threshold amount of time;
• whether a relative distance between the first sidelink-enabled device and the second sidelink-enabled device has experienced less than a threshold amount of change within a threshold amount of time;
• or
• whether the respective local oscillator of the first sidelink-enabled device, second sidelink-enabled device, or both, has been synchronized or initialized within a threshold amount of time before positioning of the selected positioning type is to take place;
• or any combination thereof;
• selecting a positioning type from the group consisting of RTT-based positioning and SS-based positioning, based on the one or more criteria;
• and
• sending a message from the first sidelink-enabled device to the second sidelink-enabled device, wherein the message includes information indicative of the selected positioning type.