Electronic device, user equipment, method and computer readable storage medium
The present invention relates to an electronic device, a User Equipment (UE), a method, and a computer readable storage medium. According to the present invention, a method for determining location of a positioning reference signal (PRS) comprises: obtaining a subcarrier interval of a resource block (RB); and determining a time-frequency location of the PRS in the RB according to the subcarrier interval. The electronic device, the UE, the method, and the computer readable storage medium according to the present invention can be used for designing the PRS with respect to an NR communication system more reasonably, so as to optimize the positioning of the UE.
1. A method for providing location services to a user equipment (UE) by a plurality of network side devices, the method performed by one of the plurality of network side devices and comprising:
determining a time frequency position of a Positioning Reference Signal (PRS) within a Resource Block (RB) according to a subcarrier interval of the RB; and
transmitting the PRS to the UE,
wherein a frequency domain position of the time frequency position is determined according to each of:
the subcarrier interval;
a physical layer cell identification of a cell where the user equipment is located;
a bandwidth for transmitting the PRS; and
a bandwidth for transmitting downlink data, and
wherein a time domain position of the time frequency position is configured according to the subcarrier interval.
2. The method according to claim 1 , wherein the determining a time frequency position of the PRS comprises:
determining time domain positions and frequency domain positions of a plurality of Resource Elements (REs) occupied by the PRS in the RB.
3. The method according to claim 2 , wherein the determining the time frequency position of the PRS comprises:
the plurality of REs do not overlap with each of a Physical Downlink Control Channel (PDCCH), a Demodulation Reference Signal (DMRS) and a Channel State Information Reference Signal (CSI-RS) in the RB.
4. The method according to claim 2 , wherein the determining time domain positions of the plurality of REs comprises:
maximizing a span of the plurality of REs in a time domain of the RB, and
maximizing a span of the plurality of REs in a frequency domain of the RB.
5. The method according to claim 2 , wherein the determining frequency domain positions of the plurality of REs comprises:
the number of resource elements REs occupied by a PRS on each Orthogonal Frequency Division Multiplexing (OFDM) symbol of the RB is no more than two.
6. The method according to claim 1 , wherein the time frequency position of the PRS is determined based also on at least one of the following parameters:
a number of the plurality of network side devices;
a link quality between the one network device and the UE; and
an identification of the UE.
7. The method according to claim 1 , wherein the method further comprises:
classifying PRSs whose positions are determined into a plurality of groups, and assigning the PRSs in the plurality of groups to the plurality of network side devices for positioning a user equipment, respectively, and
wherein the classifying PRSs whose positions are determined into a plurality of groups comprises:
assigning one or more REs on a same subcarrier occupied by the PRSs to a same group; or
assigning one or more REs on a same Orthogonal Frequency Division Multiplexing (OFDM) symbol occupied by the PRSs to a same group; or
assigning one or more REs on a same subcarrier occupied by the PRSs to different groups, and
assigning one or more REs on a same OFDM symbol occupied by the PRSs to different groups.
8. The method according to claim 7 , wherein the method further comprises correcting positions of the PRSs assigned to the network side devices according to at least one of the following parameters: link quality between the network side devices and the user equipment; an identification of the user equipment; and serial numbers of groups where the PRSs are located.
9. An electronic device used as a-one of a plurality of network side devices configured to provide location services to a user equipment (UE), comprising processing circuitry configured to perform a method that includes:
determining a time frequency position of a Positioning Reference Signal (PRS) within a Resource Block (RB) according to a subcarrier interval of the RB; and
transmitting the PRS to the UE,
wherein a frequency domain position of the time frequency position is determined according to each of:
the subcarrier interval;
a physical layer cell identification of a cell where the user equipment is located;
a bandwidth for transmitting the PRS; and
a bandwidth for transmitting downlink data, and
wherein a time domain position of the time frequency position is configured according to the subcarrier interval.
10. A non-transitory computer readable program product containing instructions for causing a device to perform a method for providing location services to a user equipment (UE) by one of a plurality of network side devices, the method comprising:
determining a time frequency position of a Positioning Reference Signal (PRS) within a Resource Block (RB) according to a subcarrier interval of the RB; and
transmitting the PRS to the UE,
wherein a frequency domain position of the time frequency position is determined according to each of:
the subcarrier interval;
a physical layer cell identification of a cell where the user equipment is located;
a bandwidth for transmitting the PRS; and
a bandwidth for transmitting downlink data,
wherein a time domain position of the time frequency position is configured according to the subcarrier interval.