Timing-based positioning techniques
Timing-based positioning methods are performed including measuring and/or reporting timing errors. A communication node determines measurement information that comprises a set of measurement results and a set of timing delays, where the set of measurement results include a first set of time values when positioning signals are sent or received by a processor of the communication node, and where the set of timing delays includes a second set of time values, each of the second set of time values is a difference between when a positioning signal is sent or received by the processor of the communication node and when the positioning signal is respectively transmitted or received by an antenna of the communication node; and transmitting, by the communication node, the set of measurement results and the set of timing delays to a second communication node.
1 . A wireless communication method, comprising:
receiving, by a communication node, from a second communication node, a list of associated transmission and reception points (TRPs) that can perform mutual calibration with each other;
determining, by the communication node, measurement information that comprises a set of measurement results and a set of timing delays,
wherein the set of measurement results include a first set of time values when positioning signals received or sent from the list of associated TRPs are sent or received by a processor of the communication node, and
wherein the set of timing delays includes a second set of time values, each of the second set of time values is a difference between when a positioning signal received or sent from the list of associated TRPs is sent or received by the processor of the communication node and when the positioning signal is respectively transmitted or received by an antenna of the communication node; and
transmitting, by the communication node, the set of measurement results and the set of timing delays to a second communication node.
2 . The method of claim 1 , wherein the set of timing delays includes a sum of a first part and a second part, wherein the first part is a difference between when a first positioning signal is transmitted by the antenna of the communication node and when the first positioning signal is sent by the processor of the communication node; and wherein the second part is a difference between when a second positioning signal is received by the processor of the communication node and when the second positioning signal is received by the antenna of the communication node.
3 . The method of claim 1 , wherein the set of timing delays are determined during a time duration when transmission or reception of signals are limited to transmission or reception of the positioning signals.
4 . The method of claim 3 , further comprising: receiving, by the communication node from the second communication node, a configuration information of time duration, wherein the configuration information comprises any one or more of a length, a periodicity, an offset, an activate or inactivate switch, and a timing advance.
5 . The method of claim 1 , wherein the receiving the list of TRPs comprises:
receiving the list of associated TRPs in assistance data sent by a location server in a core network.
6 . The method of claim 1 , wherein the communication node performs communication with at least two associated TRPs from the list of associated TRPs by using a same physical transmission channel to transmit signals to or to receive signals from the at least two associated TRPs.
7 . The method of claim 1 , wherein the positioning signals include sounding reference signals (SRSs), positioning reference signals (PRSs), channel state information reference signals (CSI-RSs), phase tracking reference signals (PT-RS), or tracking reference signals (TRSs), and wherein the set of timing delays are determined using the positioning signals.
8 . The method of claim 1 , wherein the communication node includes a user equipment (UE), and wherein the second communication node includes a location server in a core network, a base station, or a transmission and reception point (TRP).
9 . A wireless communication method, comprising:
determining, by a base station, measurement information that comprises a set of measurement results and a set of timing delays,
wherein the set of measurement results include a first set of time values when positioning signals received or sent by a list of associated TRPs that can perform mutual calibration with each other are sent or received by a processor of the base station, and
wherein the set of timing delays includes a second set of time values, each of the second set of time values is a difference between when a positioning signal received or sent by a list of associated TRPs that can perform mutual calibration with each other is sent or received by the processor of the base station and when the positioning signal is respectively transmitted or received by an antenna of the base station; and
transmitting, by the base station, the set of measurement results and the set of timing delays to a communication node.
10 . The method of claim 9 , wherein the set of timing delays includes a sum of a first part and a second part, wherein the first part is a difference between when a first positioning signal is transmitted by the antenna of the base station and when the first positioning signal is sent by the processor of the base station, and wherein the second part is a difference between when a second positioning signal is received by the processor of the base station and when the second positioning signal is received by the antenna of the base station.
11 . The method of claim 9 , wherein the set of timing delays includes a difference of a first part and a second part, wherein the first part is a difference between when a first positioning signal is sent by the processor of the base station and when the first positioning signal is sent by the antenna of the base station; and wherein the second part is a difference between when a second positioning signal is sent by a processor of a second base station and when the second positioning signal is sent by an antenna of the second base station.
12 . The method of claim 9 , wherein the set of timing delays includes a difference of a first part and a second part, wherein the first part is a difference between when a first positioning signal is received by the processor of the base station and when the first positioning signal is received by the antenna of the base station; and wherein the second part is a difference between when a second positioning signal is received by a processor of a second base station and when the second positioning signal is received by an antenna of the second base station.
13 . The method of claim 9 , wherein the set of timing delays are determined during a time duration when transmission or reception of signals are limited to transmission or reception of the positioning signals.
14 . The method of claim 9 , wherein the list of associated TRPs is transmitted in assistance data sent by a location server in a core network.
15 . The method of claim 9 , wherein the positioning signals include sounding reference signals (SRSs), positioning reference signals (PRSs), channel state information reference signals (CSI-RSs), phase tracking reference signals (PT-RSs), or tracking reference signals (TRSs), and wherein the set of timing delays are determined using the positioning signals.
16 . The method of claim 9 , wherein the communication node includes am a location server in a core network.