Methods, apparatus and machine-readable mediums relating to reference signals for positioning in a wireless network

Patent metadata

Field	Value
Publication number	US-12082144-B2
Application number	US-201917290033-A
Country	US
Kind code	B2
Filing date	Oct 28, 2019
Priority date	Nov 2, 2018
Publication date	Sep 3, 2024
Grant date	Sep 3, 2024

Abstract

Embodiments of the disclosure provide methods, apparatus and machine-readable mediums relating to reference signals for positioning in a wireless network. A method performed by a wireless device relating to positioning in a wireless network is provided. The method comprises receiving user data, and a reference signal for positioning in a transmission from a radio network node. The method further comprises rate matching the user data over one or more radio resources not used by the reference signal.

First claim

The invention claimed is:

1. A method performed by a wireless device relating to positioning in a wireless network, the method comprising:
receiving, in a same slot or a same subframe, user data and a reference signal for performing positioning measurements in a transmission from a radio network node; and
rate matching the user data over one or more radio resources not used by the reference signal.

2. The method of claim 1 , wherein rate matching the user data over one or more radio resources not used by the reference signal comprises:
receiving the user data on only the one or more radio resources not used by the reference signal; and
adapting decoding of the user data to account for receiving the user data on only the one or more radio resources not used by the reference signal.

3. The method of claim 1 , wherein rate matching the user data over one or more radio resources not used by the reference signal comprises rate matching the user data over resource elements of the same slot or the same subframe not including resource elements or a symbol used by the reference signal.

4. The method of claim 1 , wherein rate matching the user data over one or more radio resources not used by the reference signal comprises rate matching the user data over one or more radio resources not used by the reference signal based on received higher layer signaling.

5. The method of claim 1 , wherein the reference signal comprises one or more channel-state-information reference signals (CSI-RS).

6. The method of claim 1 , further comprising:
receiving, from a network node, a configuration message comprising an indication of respective channel-state-information reference signal (CSI-RS) configurations utilized by one or more radio network nodes of the wireless network; and
performing positioning measurements on CSI-RS transmissions by the one or more radio network nodes, based on the respective CSI-RS configurations.

7. The method of claim 6 , further comprising transmitting a capability of the wireless device to perform positioning measurements on CSI-RS transmissions.

8. The method of claim 7 , wherein the capability of the wireless device to perform positioning measurements on CSI-RS transmissions is transmitted directly or indirectly to a positioning network node of the wireless network node.

9. The method of claim 7 , wherein the capability of the wireless device to perform positioning measurements on CSI-RS transmissions comprises an indication of the wireless device to perform positioning measurements on CSI-RS transmissions comprising one or more of: CSI-RS based signal strength or quality measurements; CSI-RS timing measurements; CSI-RS angular measurements; CSI-RS based intra-frequency measurements; CSI-RS measurements for a primary cell (PCell); CSI-RS measurements for a primary secondary cell (PSCell); CSI-RS measurements for a secondary cell (SCell); CSI-RS measurements for intra-frequency neighbouring cells; CSI-RS based inter-frequency measurements; CSI-RS based measurements in a particular part of the transmission frequency spectrum; CSI-RS based measurements with a specific CSI-RS configuration; CSI-RS based intra-frequency measurements with measurement gaps; CSI-RS based intra-frequency measurements outside an active DL bandwidth part of the wireless device; measurements on CSI-RS transmissions with one or more specific quasi co-located (QCL) properties or transmission configuration indication (TCI) states; CSI-RS based measurements based on minimum requirements of the wireless device for performing CSI-RS based measurements; CSI-RS based measurements with a certain relation to synchronization signal (SS)/physical broadcast channel (PBCH) Block Measurement Time Configuration (SMTC); CSI-RS based measurements based on a particular numerology.

10. The method of claim 7 , wherein the indication of the CSI-RS configurations is generated based on the capability of the wireless device to perform positioning measurements on CSI-RS transmissions.

11. The method of claim 6 , wherein the CSI-RS configuration relates to one or more CSI-RS resources utilized by the one or more radio network nodes and the one or more CSI-RS resources comprise a CSI-RS resource set.

12. The method of claim 11 , wherein the CSI-RS resource set comprises one or more of an information element TRS-info set and a CSI-RS for tracking.

13. The method of claim 6 , wherein a respective CSI-RS configuration relates to one or more of a cell served by the radio network node or a beam transmitted by the radio network node.

14. The method of claim 6 , wherein the positioning measurements comprise timing measurements, wherein the timing measurements comprise one or more of time-of-arrival (TOA) and reference signal time difference (RSTD) measurements.

15. The method of claim 6 , wherein the CSI-RS configurations comprise one or more of: an index or identity used to generate a CSI-RS sequence used in the CSI-RS transmissions; a numerology of the CSI-RS transmissions; a bandwidth used in the CSI-RS transmissions; a direction of a beam used to transmit the CSI-RS transmissions; a transmission frequency of the CSI-RS transmissions; a quasi co-located (QCL) or transmission configuration indication (TCI) indication; a density of the CSI-RS transmissions (e.g., a number of CSI-RS resources used per radio resource); a frequency-hopping configuration used in the CSI-RS transmissions; a muting configuration used in the CSI-RS transmissions; and an indication as to whether the CSI-RS configuration is the same as that used by a reference radio network node.

16. The method of claim 6 , further comprising:
reporting the positioning measurements to a positioning network node of the wireless network, enabling the positioning network node to determine a location of the wireless device based on the positioning measurements; or
determining a location of the wireless device based on the positioning measurements.

17. The method of claim 6 , wherein the indication of respective channel-state-information reference signal (CSI-RS) configurations utilized by one or more radio network nodes of the wireless network is contained within assistance data in respect of the one or more radio network nodes.

18. The method of claim 1 , further comprising:
performing positioning measurements on the received reference signal.

19. A wireless device comprising:
radio circuitry; and
processing circuitry operatively coupled to the radio circuitry and configured to:
receive, in a same slot or a same subframe, user data and a reference signal for performing positioning measurements in a transmission from a radio network node, using the radio circuitry; and
rate match the user data over one or more radio resources not used by the reference signal.

20. The wireless device of claim 19 , wherein the processing circuitry is configured to rate match the user data over one or more radio resources not used by the reference signal by:
receiving the user data on only the one or more radio resources not used by the reference signal; and
adapting decoding of the user data to account for receiving the user data on only the one or more radio resources not used by the reference signal.

21. The wireless device of claim 19 , wherein the processing circuitry is configured to rate match the user data over one or more radio resources not used by the reference signal by rate matching the user data over resource elements of the same slot or the same subframe not including resource elements or a sym

Assignees

• Ericsson Telefon Ab L M

Inventors

• Munier Florent
• Siomina Iana
• Gunnarsson Fredrik
• Ernström Per
• Shreevastav Ritesh

Classifications

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L1/0067

  Rate matching (H04L1/0013 and H04L1/08 take precedence) · CPC title

• G01S5/10

  Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements {, e.g. omega or decca systems}(G01S5/12 takes precedence {; beacons and receivers cooperating therewith G01S1/306, G01S1/308}) · CPC title

• G01S5/0205

  Details · CPC title

• H04L5/0073

  Allocation arrangements that take into account other cell interferences · CPC title