Mechanism for sidelink positioning
Embodiments of the present disclosure relate to a method, device, apparatus and computer readable medium for sidelink positioning. According to embodiments of the present disclosure, a second device transmits information related to sidelink positioning to a first device. The information indicates that the second device is able to assist with the sidelink positioning and comprises assistance information for the sidelink positioning. The first device selects at least one proper device for the sidelink positioning based on the assistance information. In this way, it improves accuracy of the sidelink positioning.
1 . A first device comprising:
at least one processor; and
at least one memory including computer program codes;
the at least one memory and the computer program codes are configured to, with the at least one processor, cause the first device to:
receive, from a set of second devices, information indicating that the set of second devices are capable of assisting with sidelink positioning of the first device, the information further comprising assistance information for assisting with the sidelink positioning, wherein the assistance information comprises at least one of:
an antenna configuration at the set of second devices,
a panel selection at the set of second devices for a sidelink positioning reference signal,
a movement status of the set of second devices, or
an angle of arrival range measured by the set of second devices; and
transmit a set of positioning reference signals to a subset of second devices which are determined from the set of second devices based at least in part on the assistance information to assist with the sidelink positioning of the first device.
2 . The first device of claim 1 , wherein the at least one memory and the computer program codes are configured to, with the at least one processor, further cause the first device to:
receive basic safety message information from a plurality of second devices; and
determine, based on the basic safety message information, the set of second devices from the plurality of second devices.
3 . The first device of claim 2 , wherein the at least one memory and the computer program codes are configured to, with the at least one processor, further cause the first device to:
in accordance with a determination that the basic safety message information indicates locations of the plurality of second devices, determine, based on the locations, the set of second devices meeting at least one of the following:
geometric dilution of precision properties of the set of second devices exceeding a threshold,
position accuracies of the set of second devices exceeding a threshold accuracy,
received power of the set of second devices exceeding a threshold power; or
received signal quality of the set of second device exceeding a threshold quality.
4 . The first device of claim 2 , wherein the at least one memory and the computer program codes are configured to, with the at least one processor, further cause the first device to:
transmit, to the set of second devices, a request for assisting with the sidelink positioning, the request indicating a criteria for capability of assisting with the sidelink positioning.
5 . The first device of claim 4 , wherein the criteria comprise at least one of:
a line of sight status,
a reference signal received power, or
an angle of arrival range.
6 . The first device of claim 1 , wherein the assistance information further comprises:
a line of sight status between the first device and the set of second devices.
7 . A second device comprising:
at least one processor; and
at least one memory including computer program codes;
the at least one memory and the computer program codes are configured to, with the at least one processor, cause the second device to:
transmit, to a first device, information indicating that the second device is capable of assisting with sidelink positioning of the first device, the information further comprising assistance information for assisting with the sidelink positioning, wherein the assistance information comprises at least one of:
an antenna configuration at the set of second devices,
a panel selection at the set of second devices for a sidelink positioning reference signal,
a movement status of the set of second devices, or
an angle of arrival range measured by the set of second devices; and
receive a positioning reference signal from the first device.
8 . The second device of claim 7 , wherein the at least one memory and the computer program codes are configured to, with the at least one processor, further cause the second device to:
transmit basic safety message information to the first device.
9 . The second device of claim 7 , wherein the at least one memory and the computer program codes are configured to, with the at least one processor, further cause the second device to:
receive, from the first device, a request for assisting with the sidelink positioning, the request indicating a criteria for capability of assisting with the sidelink positioning; and
in accordance with a determination that the criteria is fulfilled, determine that the second device is capable of assisting with the sidelink positioning.
10 . The second device of claim 9 , wherein the criteria comprise at least one of:
a line of sight status,
a reference signal received power, or
an angle of arrival range.
11 . The second device of claim 7 , wherein the at least one memory and the computer program codes are configured to, with the at least one processor, further cause the second device to:
determine whether the second device is capable of assisting with the sidelink positioning based on at least one of:
traffic load at the second device, or
a power consumption requirement at the second device.
12 . The second device of claim 7 , wherein the assistance information further comprises
a line of sight status between the first device and the second device.
13 . A method, comprising:
receiving, at a first device and from a set of second devices, information indicating that the set of second devices are capable of assisting with sidelink positioning of the first device, the information further comprising assistance information for assisting with the sidelink positioning, wherein the assistance information comprises at least one of:
an antenna configuration at the set of second devices,
a panel selection at the set of second devices for a sidelink positioning reference signal,
a movement status of the set of second devices, or
an angle of arrival range measured by the set of second devices; and
transmitting a set of positioning reference signals to a subset of second devices which are determined from the set of second devices based at least in part on the assistance information to assist with the sidelink positioning of the first device.
14 . The method of claim 13 , further comprising:
receiving basic safety message information from a plurality of second devices; and
determining, based on the basic safety message information, the set of second devices from the plurality of second devices.
15 . The method of claim 14 , further comprising:
in accordance with a determination that the BSM information indicates locations of the plurality of second devices, determining, based on the locations, the set of second devices meeting at least one of the following:
geometric dilution of precision properties of the set of second devices exceeding a threshold,
position accuracies of the set of second devices exceeding a threshold accuracy, received power of the set of second devices exceeding a threshold power, or received signal quality of the set of second devices exceeding a threshold quality.
16 . The method of claim 14 , further comprising:
transmitting, to the set of second devices, a request for assisting with the sidelink positioning, the request indicating a criteria for capability of assisting with the sidelink positioning.
17 . The method of claim 16 , wherein the criteria comprise at least one of:
a line of sight status,
a reference signal received power, or
an angle of arrival range.
18 . The method of claim 13 , wherein the assistance information further comprises
a line of sight status between the first device and the set of second devices.