IP Library › Granted Patent US 12,192,937
Granted Patent B2
US 12,192,937 · App. 17/044,586 · Granted Jan 7, 2025

Timing advance for non-terrestrial network communication

Inventors: Nagi Mahalingam (San Diego, CA); Anantharaman Balasubramanian (San Diego, CA); Mihaela Beluri (Jericho, NY); Ravikumar V. Pragada (Warrington, PA); Mahmoud Taherzadeh Boroujeni (San Diego, CA); Shahrokh Nayeb Nazar (San Diego, CA); Seyed Mohsen Hosseinian (San Diego, CA); Frank La Sita (Setauket, NY)
Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
H04W56/0045H04B7/18513H04W56/0005H04W74/0833
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Quick Facts
Patent No.
US 12,192,937
App. No.
17/044,586
Granted
Jan 7, 2025
Kind
B2
Abstract

Methods, systems, and devices for addressing timing advance (TA) in non-terrestrial network communication is disclosed herein. A wireless transmit and receive unit (WTRU) may receive system information from a base station attached to an airborne or spaceborne vehicle that indicates a physical random access channel (PRACH) resource. The WTRU may determine a timing offset based on a plurality of information, such as the location information and the system information. The WTRU may transmit a preamble using the timing offset via the PRACH resource. The base station may receive the preamble and send a random access response (RAR) that includes, for example, a TA command. The WTRU may receive the RAR including the TA command and combine the timing offset with the TA command to determine an actual TA, after which the WTRU may use the actual TA for uplink transmissions.

Claims (31)

1. A method performed by a wireless transmit and receive unit (WTRU), the method comprising:

receiving, from a spaceborne communications satellite, system information that includes a position of, and trajectory parameters, including velocity, about, the spaceborne communications satellite;

determining a position of the WTRU using a global navigation satellite system (GNSS);

estimating a propagation delay based on the determined WTRU position and the position of, and the trajectory parameters about, the spaceborne communications satellite;

determining a timing advance (TA) based on the estimated propagation delay; and

transmitting a signal using the determined TA.

2. The method of claim 1 , wherein the system information indicates one or more physical-random-access-channel (PRACH) resources.

3. The method of claim 2 , further comprising:

receiving a random-access response (RAR), wherein the RAR includes a timing-advance (TA) command;

determining an adjusted TA based on the TA command and the estimated propagation delay; and

transmitting a message using the adjusted TA.

4. The method of claim 3 , wherein the RAR further includes at least one of a power correction, an uplink grant, or a temporary identifier.

5. The method of claim 3 , wherein the RAR includes a two-part bitfield, wherein a first part of the two-part bitfield has a high-resolution TA and a second part of the two-part bitfield has a low-resolution TA.

6. The method of claim 1 , wherein the transmitting a signal occurs at a random-access-channel (RACH) opportunity indicated in the system information.

7. The method of claim 1 , wherein the spaceborne communications satellite comprises a relay satellite.

8. A wireless-transmit-and-receive unit (WTRU), comprising a processor coupled to a transceiver, the processor and transceiver configured to:

receive, from a spaceborne non-navigation satellite, system information that includes a position of, and trajectory parameters, including velocity, about, the spaceborne non-navigation satellite;

determine a position of the WTRU using a global navigation satellite system (GNSS);

estimate a propagation delay based on the determined WTRU position and the position of, and the trajectory parameters about, the spaceborne non-navigation satellite;

determine a timing advance (TA) based on the estimated propagation delay; and

transmit a signal using the determined TA.

9. The WTRU of claim 8 , wherein the system information indicates one or more physical-random-access-channel (PRACH) resources.

10. The WTRU of claim 9 , the processor and transceiver further configured to:

receive a random access response (RAR), wherein the RAR includes a timing-advance (TA) command;

determine an adjusted TA based on the TA command and the estimated propagation delay; and

transmit a message using the adjusted TA.

11. The WTRU of claim 10 , wherein the RAR further includes at least one of a power correction, an uplink grant, or a temporary identifier.

12. The WTRU of claim 10 , wherein the RAR includes a two-part bitfield, wherein a first part of the two-part bitfield has a high-resolution TA and a second part of the two-part bitfield has a low-resolution TA.

13. The WTRU of claim 8 , wherein the transmitting a signal occurs at a random-access-channel (RACH) opportunity indicated in the system information.

14. The WTRU of claim 8 , wherein the system information further includes timing information.

15. The WTRU of claim 8 , wherein the spaceborne non-navigation satellite is configured to relay signals between the processor and transceiver and a device remote from the processor and transceiver.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 17, 2023
From: IDAC HOLDINGS, INC. BY ITS SUCCESSOR INTERDIGITAL PATENT HOLDINGS, INC.
To: INTERDIGITAL PATENT HOLDINGS, INC.
Reel/Frame 062401/0738 →
Continuity (3)
Provisional Application 62652698 · Apr 4, 2018
Provisional Application 62652182 · Apr 3, 2018
Related Publication 20210029658A1 · Jan 28, 2021
References Cited (89)
US 9363778B2 · Haartsen et al. · 2016 [cited by applicant]
US 9559768B2 · Dent · 2017 [cited by applicant]
US 11856631B1 · Huang · 2023 [cited by examiner]
US 20070021122A1 · Lane et al. · 2007 [cited by applicant]
US 20080020702A1 · Jendbro · 2008 [cited by examiner]
US 20080182579A1 · Wang · 2008 [cited by examiner]
US 20090238126A1 · Sato et al. · 2009 [cited by applicant]
US 20090303122A1 · Weng · 2009 [cited by examiner]
US 20100066599A1 · Liu · 2010 [cited by examiner]
US 20100109943A1 · Park · 2010 [cited by examiner]
US 20100117899A1 · Papadimitratos · 2010 [cited by examiner]
US 20110223932A1 · Hole · 2011 [cited by examiner]
US 20130058315A1 · Feuersanger · 2013 [cited by examiner]
US 20130215874A1 · Yang · 2013 [cited by examiner]
US 20130315136A1 · Bhaskar · 2013 [cited by examiner]
US 20140044108A1 · Earnshaw et al. · 2014 [cited by applicant]
US 20150070211A1 · Cheng · 2015 [cited by examiner]
US 20170302368A1 · Trott · 2017 [cited by examiner]
US 20180006710A1 · Buer · 2018 [cited by examiner]
US 20180210090A1 · Soualle · 2018 [cited by examiner]
US 20190141754A1 · Bai · 2019 [cited by examiner]
US 20190342000A1 · Zheng · 2019 [cited by examiner]
US 20190349077A1 · Alasti · 2019 [cited by examiner]
US 20210105761A1 · Cheng · 2021 [cited by examiner]
US 20210136641A1 · Roy · 2021 [cited by examiner]
US 20210273719A1 · Wang · 2021 [cited by examiner]
US 20210337598A1 · Ma · 2021 [cited by examiner]
US 20220086780A1 · Tsai · 2022 [cited by examiner]
US 20220086786A1 · Narasimha · 2022 [cited by examiner]
US 20220216896A1 · Speidel · 2022 [cited by examiner]
De Gaudenzi et al., “Enhanced spread Aloha physical layer design and performance,”, International Journal of Satellite Communications and Networking, vol. 32, No. 6 (2014). [cited by applicant]
Department of Transportation, Global Positioning System (GPS) Civil Monitoring Performance Specification, GPS Civil Monitoring Performance Specification, DOT-VNTSC-FAA-09-08 (Apr. 30, 2009). [cited by applicant]
Dish Network et al., “Satellite Aspects—Forward Compatibility Consideration,” 3GPP TSG RAN WG1 Meeting #86 bis, R1-1609781, Busan (Oct. 10-15, 2016). [cited by applicant]
Ericsson, “On Random Access for NTN,” 3GPP TSG-RAN WG2 #104, R2-1817765, Spokane, US (Nov. 12-16, 2018). [cited by applicant]
gps.gov, Global Positioning System Precise Positioning Service Performance Standard, 1 [cited by applicant]
gps.gov, Global Positioning System Standard Positioning Service Performance Standard, 4 [cited by applicant]
gps.gov, Global Positioning System Wide Area Augmentation System (WAAS) Performance Standard, 1 [cited by applicant]
IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Part 11: Wireless LAN Medium Access Control (MAC) and Phys… [cited by applicant]
IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Part 11: Wireless LAN Medium Access Control (MAC) and Phys… [cited by applicant]
IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Part 11: Wireless LAN Medium Access Control (MAC) and Phys… [cited by applicant]
IEEE Standard for Information Technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements; Part 11: Wireless LAN Medium Access Control (MAC) and Phys… [cited by applicant]
IEEE Standard for Information technology—Telecommunications and information exchange between systems Local and metropolitan area networks—Specific requirements; Part 11: Wireless LAN Medium Access Control (MAC) and Phys… [cited by applicant]
Interdigital Inc. et al., “Considerations on Timing Advance for NTN,” 3GPP TSG RAN WG1 Meeting #92bis, R1-1804858, Sanya, China (Apr. 16-20, 2018). [cited by applicant]
International Telecommunication Union, “Series G: Transmission Systems and Media, Digital Systems and Networks; Digital networks—Quality and availability targets; The control of jitter and wander within digital networks… [cited by applicant]
Moudrak, “Validation of Galileo Timing Services,” DLR Institute of Communications and Navigation (Dec. 2005). [cited by applicant]
Nokia, “Way Forward on Two-Step RACH Procedure,” 3GPP TSG RAN WG1 #87, R1-1613548, Reno, Nevada, USA (Nov. 14-18, 2016). [cited by applicant]
Nomor Research GMBH et al., “Initial Random Access Procedure in Non-Terrestrial Networks (NTN),” 3GPP TSG-RAN WG2 Meeting # 104, R2-1818510, Spokane, US (Nov. 12-16, 2018). [cited by applicant]
physicsinsights.org, “A Simple Description of the Sagnac Effect” available at http://www.physicsinsights.org/sagnac_1.html (2007). [cited by applicant]
Thales, “NR-NTN: Impact on Initial TA during random access procedure,” 3GPP TSG RAN1 Meeting #92-Bis, R1-1805095, Sanya, China (Apr. 16-20, 2018). [cited by applicant]
Thales, “Propagation delay and Doppler in Non-Terrestrial Networks,” 3GPP TSG RAN Meeting 76, RP-170982, West Palm Beach, USA (Jun. 5-9, 2017). [cited by applicant]
Thales, “Study on solutions evaluation for NR to support Non-Terrestrial Network,” 3GPP TSG RAN meeting #80, RP-181370, La Jolla, USA (Jun. 11-14, 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification (Release 15),” 3GPP TS… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol specification (Release 15),” 3GPP TS… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 15),” 3GPP TS 36.213 V15.0.0 (Dec. 2017). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 15),” 3GPP TS 36.213 V15.1.0 (Mar. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification (Release 15),” 3GPP TS 3… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) protocol specification (Release 15),” 3GPP TS 3… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; NR; Physical layer procedures for control (Release 15),” 3GPP TS 38.213 V15.0.0 (Dec. 2017). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network NR Radio Resource Control (RRC) protocol specification (Release 15),” 3GPP TS 38.331 V15.4.0 (Dec. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Study on New Radio (NR) to support non terrestrial networks (Release 15),” 3GPP TR 38.811 V15.0.0 (Jun. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Study on New Radio (NR) to support non terrestrial networks (Release 15),” 3GPP TR 38.811 V0.3.0 (Dec. 2017). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; NR; Medium Access Control (MAC) protocol specification (Release 15),” 3GPP TS 38.321 V15.4.0 (Dec. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; NR; Medium Access Control (MAC) protocol specification (Release 15),” 3GPP TS 38.321 V15.0.0 (Dec. 2017). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Solutions for NR to support non-terrestrial networks (NTN) (Release 16),” 3GPP TR 38.821 V0.3.0 (Nov. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; NR; Physical channels and modulation (Release 15),” 3GPP TS 38.211 V15.0.0 (Dec. 2017). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 15),” 3GPP TS 36.213 V15.5.0 (Mar. 2019). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) conformance testing (Release 15),” 3GPP TS 36.141 V15.5.0… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) conformance testing (Release 16),” 3GPP TS 36.141 V16.0.0… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) conformance testing (Release 15),” 3GPP TS 36.141 V15.1.0… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; NR; Physical layer procedures for control (Release 15),” 3GPP TS 38.213 V15.5.0 (Mar. 2019). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; NR; Radio Resource Control (RRC) protocol specification (Release 15),” 3GPP TS 38.331 V15.1.0 (Mar. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Spreading and modulation (FDD) (Release 15),” 3GPP TS 25.213 V15.0.0 (Jun. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Spreading and modulation (FDD) (Release 14),” 3GPP TS 25.213 V14.0.0 (Mar. 2017). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Spreading and modulation (FDD) (Release 11),” 3GPP TS 25.213 V11.4.0 (Dec. 2012). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Architecture description (Release 15),” 3GPP TS 36.401 V15.0.0 (De… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Architecture description (Release 15),” 3GPP TS 36.401 V15.1.0 (De… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management (Release 16),” 3GPP T… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management (Release 15),” 3GPP T… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Requirements for support of radio resource management (Release 15),” 3GPP T… [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; NR; Physical channels and modulation (Release 15),” 3GPP TS 38.211 V15.5.0 (Mar. 2019). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Physical layer procedures (TDD) (Release 15),” 3GPP TS 25.224 V15.0.0 (Jun. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Physical layer procedures (TDD) (Release 14),” 3GPP TS 25.224 V14.0.0 (Mar. 2017). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Ran; Nr; Base Station (BS) conformance testing Part 2: Radiated conformance testing (Release 15),” 3GPP TS 38.141 V0.0.3 (Aug. 2017). [cited by applicant]
Verdu et al., “Spectral Efficiency of CDMA with Random Spreading,” IEEE Transactions on Information Theory, vol. 45, No. 2 (Mar. 1999). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network NR; NR and NG-RAN Overall Description; Stage 2 (Release 15),” 3GPP TS 38.300 V15.1.0 (Mar. 2018). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; NR; NR and NG-RAN Overall Description; Stage 2 (Release 15),” 3GPP TS 38.300 V15.4.0 (Dec. 2018). [cited by applicant]
Thales et al., “NR-NTN: Analysis of the applicability of NR numerology to satellite communication,” 3GPP TSG RAN Plenary Meeting #78, RP-172277, Lisbon, Portugal (Dec. 18-21, 2017). [cited by applicant]
Third Generation Partnership Project, “Technical Specification Group Radio Access Network; Study on New Radio (NR) to support non terrestrial networks (Release 15),” 3GPP TR 38.811 V0.4.0 (RP-180545) (Mar. 2018). [cited by applicant]
Zte et al., “Considerations on random access in NTN,” 3GPP TSG RAN WG1 Meeting #92, R1-1801830, Athens, Greece (Feb. 26-Mar. 2, 2018). [cited by applicant]
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