Positioning reference signal transmission and measurement in a wireless communication network

Inventors: Ritesh Shreevastav (Upplands Väsby, SE); Yazid Lyazidi (London, GB); Florent Munier (Västra Frölunda, SE); Muhammad Ali Kazmi (Sundbyberg, SE); Venkatarao Gonuguntla (Sundbyberg, SE)

Assignee: Telefonaktiebolaget LM Ericsson (publ)

H04W64/003 H04L5/0051 H04W74/0816

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Quick Facts

Patent No.: US 12701539
App. No.: 18/697,250
Granted: Aug 4, 2026
Kind: B2

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Abstract

A radio network node ( 14 ) is configured for use in a wireless communication network ( 10 ). The radio network node ( 14 ) transmits, to a location server, signaling ( 18 ) indicating one or more time occasions ( 22 ) reserved by the radio network node ( 14 ) for positioning reference signal, PRS, transmission ( 16 ). In some embodiments, the radio network node ( 14 ) performs PRS transmission ( 16 ) in the one or more time occasions ( 22 ) indicated. The radio network node ( 14 ) may correspondingly refrain from scheduling any transmission other than PRS transmission ( 16 ) in the one or more time occasions ( 22 ) indicated as reserved for PRS transmission ( 16 ), or drop any transmission other than PRS transmission ( 16 ) scheduled for transmission in the one or more time occasions ( 22 ) indicated as reserved for PRS transmission ( 16 ).

Claims (36)

1 . A method performed by a radio network node configured for use in a wireless communication network, the method comprising:

receiving, from a network node, a request for the radio network node to reserve one or more time occasions for positioning reference signal (PRS) transmission; and

responsive to or based on the request, transmitting, to the network node, signaling indicating one or more time occasions reserved by the radio network node for PRS transmission, wherein at least one of the one or more time occasions indicated as reserved by the signaling is the same as at least one of the one or more time occasions requested by the network node to be reserved, wherein the signaling indicates one or more time occasions reserved by the radio network node for PRS transmission by indicating acceptance of the request.

2 . The method of claim 1 , further comprising:

reserving the one or more time occasions for PRS transmission, wherein the signaling indicates the one or more time occasions reserved; and

performing PRS transmission in the one or more time occasions indicated.

3 . The method of claim 1 , further comprising refraining from scheduling any transmission other than PRS transmission in the one or more time occasions indicated as reserved for PRS transmission, or dropping any transmission other than PRS transmission scheduled for transmission in the one or more time occasions indicated as reserved for PRS transmission.

4 . The method of claim 1 , further comprising:

after transmitting the signaling, receiving, from the network node, an indication of one or more common time occasions that are commonly reserved by multiple radio network nodes for PRS transmission;

refraining from scheduling any transmission other than PRS transmission in the one or more common time occasions, or dropping any transmission other than PRS transmission scheduled for transmission in the one or more common time occasions; and

performing PRS transmission in the one or more common time occasions.

5 . The method of claim 1 , wherein the signaling indicates:

one or more time occasions unconditionally reserved by the radio network node for PRS transmission, such that PRS transmission in the one or more time occasions is guaranteed; or

one or more time occasions reserved by the radio network node for PRS transmission subject to PRS transmission having at least as high of priority as any other transmissions contending for transmission in the one or more time occasions.

6 . The method of claim 1 , wherein the one or more time occasions are included in a time window within which PRS transmission by the radio network node is guaranteed or are included in a minimum time window within which PRS transmission by the radio network node is guaranteed.

7 . The method of claim 1 , wherein the network node is a location server.

8 . The method of claim 1 , wherein a split radio network node comprises a distributed unit and a central unit, wherein the radio network node implements the distributed unit and wherein the network node implements the central unit.

9 . A radio network node configured for use in a wireless communication network, the radio network node comprising:

communication circuitry; and

processing circuitry configured to:

receive, from a network node, a request for the radio network node to reserve one or more time occasions for positioning reference signal (PRS) transmission; and

responsive to or based on the request, transmit, to the network node, via the communication circuitry, signaling indicating one or more time occasions reserved by the radio network node for PRS transmission, wherein at least one of the one or more time occasions indicated as reserved by the signaling is the same as at least one of the one or more time occasions requested by the network node to be reserved, wherein the signaling indicates one or more time occasions reserved by the radio network node for PRS transmission by indicating acceptance of the request.

10 . The radio network node of claim 9 , the processing circuitry further configured to:

reserve the one or more time occasions for PRS transmission, wherein the signaling indicates the one or more time occasions reserved; and

perform PRS transmission in the one or more time occasions indicated.

11 . The radio network node of claim 9 , the processing circuitry further configured to refrain from scheduling any transmission other than PRS transmission in the one or more time occasions indicated as reserved for PRS transmission, or drop any transmission other than PRS transmission scheduled for transmission in the one or more time occasions indicated as reserved for PRS transmission.

12 . The radio network node of claim 9 , the processing circuitry further configured to:

after transmitting the signaling, receive, from the network node, an indication of one or more common time occasions that are commonly reserved by multiple radio network nodes for PRS transmission;

refrain from scheduling any transmission other than PRS transmission in the one or more common time occasions, or drop any transmission other than PRS transmission scheduled for transmission in the one or more common time occasions; and

perform PRS transmission in the one or more common time occasions.

13 . The radio network node of claim 9 , wherein the signaling indicates:

one or more time occasions unconditionally reserved by the radio network node for PRS transmission, such that PRS transmission in the one or more time occasions is guaranteed; or

14 . The radio network node of claim 9 , wherein the one or more time occasions are included in a time window within which PRS transmission by the radio network node is guaranteed or are included in a minimum time window within which PRS transmission by the radio network node is guaranteed.

15 . The radio network node of claim 9 , wherein the network node is a location server.

16 . The radio network node of claim 9 , wherein a split radio network node comprises a distributed unit and a central unit, wherein the radio network node implements the distributed unit and wherein the network node implements the central unit.