US-12621106-B2 - Sounding reference signal transmission and reception in non-terrestrial networks

US12621106B2US 12621106 B2US12621106 B2US 12621106B2US-12621106-B2

Abstract

A method can include receiving, by a wireless device, a first message that includes one or more first non-terrestrial network (NTN) configuration parameters corresponding to a first NTN node of a cell; one or more second NTN configuration parameters corresponding to a second NTN node of the cell; and two or more NTN configurations parameters of NTN neighbor cells. The method can also include receiving a second message comprising configurations parameters of at least one sounding reference signal (SRS) resource of the cell. The method can further include transmitting, via the first NTN node and the at least one SRS resource of the cell, a first SRS transmission based on a first timing advance (TA) value of the wireless device. The first TA value can be determined based on the one or more first NTN configuration parameters.

Inventors

Mohammad Ghadir Khoshkholgh Dashtaki
Ali Cagatay Cirik
Esmael Hejazi Dinan
Hua Zhou

Assignees

OFINNO, LLC

Dates

Publication Date: 20260505
Application Date: 20250318

Claims (20)

1 . A method comprising: receiving, by a wireless device, a system information block (SIB) message comprising: one or more first non-terrestrial network (NTN) configuration parameters corresponding to a first NTN node of a cell; one or more second NTN configuration parameters corresponding to a second NTN node of the cell; and a plurality of NTN configurations parameters of NTN neighbor cells; receiving a radio resource control (RRC) message comprising a sounding reference signal (SRS) configuration of the cell; transmitting, via the first NTN node and based on the SRS configuration of the cell, a first SRS transmission using a first timing advance (TA) value of the wireless device, wherein the first TA value is determined based on the one or more first NTN configuration parameters; and transmitting, via the second NTN node and based on the SRS configuration of the cell, a second SRS transmission using a second TA value of the wireless device, wherein the second TA value is determined based on the one or more second NTN configuration parameters.
2 . The method of claim 1 , wherein: the transmitting the first SRS transmission is further based on a first antenna polarization mode, wherein the one or more first NTN configuration parameters indicate the first antenna polarization mode; and the transmitting the second SRS transmission is further based on a second antenna polarization mode, wherein the one or more second NTN configuration parameters indicate the second antenna polarization mode.
3 . The method of claim 1 , wherein: the transmitting the first SRS transmission is based on a first validity timer, corresponding to the first NTN node of the cell, being running, wherein the one or more first NTN configuration parameters indicate the first validity timer; and the transmitting the second SRS transmission is based on a second validity timer, corresponding to the second NTN node of the cell, being running, wherein the one or more second NTN configuration parameters indicate the second validity timer.
4 . The method of claim 1 , wherein the RRC message indicates a spatial relation of at least one SRS resource indicated by the SRS configuration, wherein: the transmitting the first SRS transmission is further based on the spatial relation; and the transmitting the second SRS transmission is further based on the spatial relation.
5 . The method of claim 1 , wherein the SRS configuration indicates at least one periodic SRS resource, wherein the transmitting the first SRS transmission and the second SRS transmission are via the at least one periodic SRS resource.
6 . The method of claim 1 , wherein the at least one SRS configuration indicates at least one semi-persistent SRS resource, wherein the transmitting the first SRS transmission and the second SRS transmission are via the at least one semi-persistent SRS resource.
7 . The method of claim 1 , further comprising receiving a third message, via the cell, activating a semi-persistent SRS resource indicated by the SRS configuration, wherein the transmitting the first SRS transmission and the second SRS transmission is in response to the receiving the third message.
8 . The method of claim 1 , further comprising receiving a first downlink control information (DCI) indicating the first SRS transmission, wherein the transmitting the first SRS transmission: is in response to the receiving the first DCI; and is further based on a first cell-specific offset, wherein the one or more first NTN configuration parameters indicate the first cell-specific offset.
9 . The method of claim 8 , further comprising receiving a second DCI indicating the second SRS transmission, wherein the transmitting the second SRS transmission: is in response to the receiving the second DCI; and is further based on a second cell-specific offset, wherein the one or more second NTN configuration parameters indicate the second cell-specific offset.
10 . The method of claim 1 , wherein the RRC message is a SIB1 message.
11 . A wireless device comprising: one or more processors; and memory storing instructions that, when executed by the one or more processors, cause the wireless device at least to perform: receiving a system information block (SIB) message comprising: one or more first non-terrestrial network (NTN) configuration parameters corresponding to a first NTN node of a cell; one or more second NTN configuration parameters corresponding to a second NTN node of the cell; and a plurality of NTN configurations parameters of NTN neighbor cells; receiving a radio resource control (RRC) message comprising a sounding reference signal (SRS) configuration of the cell; transmitting, via the first NTN node and based on the SRS configuration of the cell, a first SRS transmission using a first timing advance (TA) value of the wireless device, wherein the first TA value is determined based on the one or more first NTN configuration parameters; and transmitting, via the second NTN node and based on the SRS configuration of the cell, a second SRS transmission using a second TA value of the wireless device, wherein the second TA value is determined based on the one or more second NTN configuration parameters.
12 . The wireless device of claim 11 , wherein the RRC message is a SIB1 message.
13 . The wireless device of claim 11 , wherein at least one SRS resource indicated by the SRS configuration comprises at least one SRS resource for positioning.
14 . The wireless device of claim 11 , wherein: the one or more first NTN configuration parameters comprise a first ephemeris information of the first NTN node; and the one or more second NTN configuration parameters comprise a second ephemeris information of the second NTN node.
15 . The wireless device of claim 11 , wherein: the one or more first NTN configuration parameters comprise one or more first common TA parameters; and the one or more second NTN configuration parameters comprise one or more second common TA parameters.
16 . The wireless device of claim 11 , wherein the first SIB message is a SIB 19 message.
17 . The wireless device of claim 11 , wherein the RRC message is a dedicated RRC message, wherein the dedicated RRC message is at least one of: an RRC configuration message; an RRC reconfiguration message; an RRC setup message; or an RRC release message.
18 . A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of a wireless device, cause the wireless device to perform: receiving a system information block (SIB) message comprising: one or more first non-terrestrial network (NTN) configuration parameters corresponding to a first NTN node of a cell; one or more second NTN configuration parameters corresponding to a second NTN node of the cell; and a plurality of NTN configurations parameters of NTN neighbor cells; receiving a radio resource control (RRC) message comprising a sounding reference signal (SRS) configuration of the cell; transmitting, via the first NTN node and based on the SRS configuration of the cell, a first SRS transmission using a first timing advance (TA) value of the wireless device, wherein the first TA value is determined based on the one or more first NTN configuration parameters; and transmitting, via the second NTN node and based on the SRS configuration of the cell, a second SRS transmission using a second TA value of the wireless device, wherein the second TA value is determined based on the one or more second NTN configuration parameters.
19 . The non-transitory computer-readable medium of claim 18 , wherein the transmitting the first SRS transmission is further based on a first antenna polarization mode, wherein the one or more first NTN configuration parameters indicate the first antenna polarization mode; and the transmitting the second SRS transmission is further based on a second antenna polarization mode, wherein the one or more second NTN configuration parameters indicate the second antenna polarization mode.
20 . The non-transitory computer-readable medium of claim 18 , wherein: the transmitting the first SRS transmission is based on a first validity timer, corresponding to the first NTN node of the cell, being running, wherein the one or more first NTN configuration parameters indicate the first validity timer; and the transmitting the second SRS transmission is based on a second validity timer, corresponding to the second NTN node of the cell, being running, wherein the one or more second NTN configuration parameters indicate the second validity timer.

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/US2023/033507, filed Sep. 22, 2023, which claims the benefit of U.S. Provisional Application No. 63/409,468, filed Sep. 23, 2022, all of which are hereby incorporated by reference in their entireties. BRIEF DESCRIPTION OF THE DRAWINGS Examples of several of the various embodiments of the present disclosure are described herein with reference to the drawings. FIG. 1A and FIG. 1B illustrate example mobile communication networks in which embodiments of the present disclosure may be implemented. FIG. 2A and FIG. 2B respectively illustrate a New Radio (NR) user plane and control plane protocol stack. FIG. 3 illustrates an example of services provided between protocol layers of the NR user plane protocol stack of FIG. 2A. FIG. 4A illustrates an example downlink data flow through the NR user plane protocol stack of FIG. 2A. FIG. 4B illustrates an example format of a MAC subheader in a MAC PDU. FIG. 5A and FIG. 5B respectively illustrate a mapping between logical channels, transport channels, and physical channels for the downlink and uplink. FIG. 6 is an example diagram showing RRC state transitions of a UE. FIG. 7 illustrates an example configuration of an NR frame into which OFDM symbols are grouped. FIG. 8 illustrates an example configuration of a slot in the time and frequency domain for an NR carrier. FIG. 9 illustrates an example of bandwidth adaptation using three configured BWPs for an NR carrier. FIG. 10A illustrates three carrier aggregation configurations with two component carriers. FIG. 10B illustrates an example of how aggregated cells may be configured into one or more PUCCH groups. FIG. 11A illustrates an example of an SS/PBCH block structure and location. FIG. 11B illustrates an example of CSI-RSs that are mapped in the time and frequency domains. FIG. 12A and FIG. 12B respectively illustrate examples of three downlink and uplink beam management procedures. FIG. 13A, FIG. 13B, and FIG. 13C respectively illustrate a four-step contention-based random access procedure, a two-step contention-free random access procedure, and another two-step random access procedure. FIG. 14A illustrates an example of CORESET configurations for a bandwidth part. FIG. 14B illustrates an example of a CCE-to-REG mapping for DCI transmission on a CORESET and PDCCH processing. FIG. 15 illustrates an example of a wireless device in communication with a base station. FIG. 16A, FIG. 16B, FIG. 16C, and FIG. 16D illustrate example structures for uplink and downlink transmission. FIG. 17 shows several DCI formats. FIG. 18 illustrates an example of beam management with codebook based uplink transmission as per an aspect of an embodiment of the present disclosure. FIG. 19 illustrates an example of beam management with non-codebook based uplink transmission as per an aspect of an embodiment of the present disclosure. FIG. 20A shows an example of a non-terrestrial network. FIG. 20B is an example figure of different types of NTN platforms. FIG. 21A shows an example of an NTN with a transparent NTN platform. FIG. 21B shows examples of propagation delay corresponding to NTNs of different altitudes. FIG. 22 shows an example embodiment of a procedure for uplink/downlink transmission in wireless communications systems per an aspect of the present disclosure. FIG. 23 shows an example embodiment of a procedure for uplink/downlink transmission in wireless communications systems per an aspect of the present disclosure. FIG. 24 shows an example embodiment of a procedure for uplink/downlink transmission in wireless communications systems per an aspect of the present disclosure. DETAILED DESCRIPTION In the present disclosure, various embodiments are presented as examples of how the disclosed techniques may be implemented and/or how the disclosed techniques may be practiced in environments and scenarios. It will be apparent to persons skilled in the relevant art that various changes in form and detail can be made therein without departing from the scope. In fact, after reading the description, it will be apparent to one skilled in the relevant art how to implement alternative embodiments. The present embodiments should not be limited by any of the described exemplary embodiments. The embodiments of the present disclosure will be described with reference to the accompanying drawings. Limitations, features, and/or elements from the disclosed example embodiments may be combined to create further embodiments within the scope of the disclosure. Any figures which highlight the functionality and advantages, are presented for example purposes only. The disclosed architecture is sufficiently flexible and configurable, such that it may be utilized in ways other than that shown. For example, the actions listed in any flowchart may be re-ordered or only optionally used in some embodiments. Embodiments may be configured to operate as needed. The disc