PRS design by extending the basic signal

Patent metadata

Field	Value
Publication number	US-11956168-B2
Application number	US-201917278845-A
Country	US
Kind code	B2
Filing date	Sep 27, 2019
Priority date	Sep 28, 2018
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

A method, network node and wireless device for position reference signal (PRS) design by extending a base signal are disclosed. According to one aspect, a method in a wireless device (WD) includes obtaining extended reference signal, RS, configurations from the network node. The method also includes determining a waveform associated with the extended RS. The method also includes detecting a RS and estimate an associated time of arrival. The method further includes sending a measurement report to the network node based on the estimated time of arrival.

First claim

What is claimed:

1. A network node configured to act as a transmission point and configured to communicate with a wireless device (WD), the network node comprising a radio interface and a processing circuitry configured to:
obtain extended reference signal (RS) configurations from another network node, the extended RS comprising a combination of a base signal and an additional positioning reference signal (APRS), the base signal comprising a tracking RS (TRS) having a TRS periodicity, and the APRS having an APRS periodicity that is a multiple of the TRS periodicity;
determine an extended RS waveform based on the extended RS configuration; and
transmit the extended RS waveform to the WD.

2. The network node of claim 1 , wherein another network node comprises a location server.

3. A method implemented in a network node, where the network node acts as a transmission point and is configured to communicate with a wireless device (WD), the method comprising:
obtain extended reference signal (RS) configurations from another network node, the extended RS comprising a combination of a base signal and an additional positioning reference signal (APRS), the base signal comprising a tracking RS (TRS) having a TRS periodicity, and the APRS having an APRS periodicity that is a multiple of the TRS periodicity;
determining an extended RS waveform based on the extended RS configuration; and
transmitting the extended RS waveform to the WD.

4. The method of claim 3 , wherein another network node comprises a location server.

5. The method of claim 3 , wherein the additional signal comprises additional symbols.

6. The method of claim 3 , wherein one RS per cell for time and frequency tracking purposes is transmitted.

7. The method of claim 3 , wherein one two slot RS per cell with a burst periodicity for time and frequency tracking purposes is transmitted.

8. The method of claim 3 , wherein the extended reference signal enables the determination of the position of the WD.

9. A wireless device (WD) configured to communicate with a network node, the WD comprising a radio interface and a processing circuitry configured to:
obtain extended reference signal (RS) configurations from another network node, the extended RS comprising a combination of a base signal and an additional positioning reference signal (APRS), the base signal comprising a tracking RS (TRS) having a TRS periodicity, and the APRS having an APRS periodicity that is a multiple of the TRS periodicity;
determine a waveform associated with the extended RS;
detect a RS and estimate an associated time of arrival; and
send a measurement report to the network node based on the estimated time of arrival.

10. The WD of claim 9 , wherein the WD obtains a preconfigured extended RS.

11. A method implemented in a wireless device, WD, where the WD is configured to communicate with a network node, the method comprising:
obtain extended reference signal (RS) configurations from another network node, the extended RS comprising a combination of a base signal and an additional positioning reference signal (APRS), the base signal comprising a tracking RS (TRS) having a TRS periodicity, and the APRS having an APRS periodicity that is a multiple of the TRS periodicity;
determining a waveform associated with the extended RS;
detecting a RS and estimate an associated time of arrival; and
sending a measurement report to the network node based on the estimated time of arrival.

12. The method of claim 11 , wherein the WD obtains a preconfigured extended RS.

13. The method of claim 11 , wherein the additional positioning reference signal comprises additional symbols.

14. The method of claim 11 , wherein the extended reference signal enables the determination of the position of the WD.

Assignees

• Ericsson Telefon Ab L M

Inventors

• Ernström Per
• Shreevastav Ritesh
• Nygren Johannes
• Shrestha Deep
• Stare Erik
• Munier Florent
• Dwivedi Satyam
• Modarres Razavi Sara
• Gunnarsson Fredrik

Classifications

• H04L5/0048 Primary

  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

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04W4/029

  Location-based management or tracking services · CPC title

• H04L5/0094 Primary

  Indication of how sub-channels of the path are allocated · CPC title

• H04W24/10

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title