Granted Patent B2

US 12,256,433 · App. 17/951,969 · Granted Mar 18, 2025

Inventors: Sanjay Goyal (Deer Park, NY); Arnab Roy (Phoenixville, PA); Alpaslan Demir (East Meadow, NY); J. Patrick Tooher (Montreal, CA); Janet Stern-Berkowitz (Little Neck, NY); Moon-il Lee (Melville, NY); Lorenza Giupponi (Barcelona, ES); Sandra Lagén Morancho (Igualada, ES); Biljana Bojović (Barcelona, ES); Mihaela Beluri (Jericho, NY)

Assignee: INTERDIGITAL PATENT HOLDINGS, INC.

H04W74/0816H04B7/0695

Abstract

Claims (45)

1. A method performed by a first node to reserve a directional channel, the method comprising:

performing a first listen-before-talk (LBT) in a first beam direction towards a second node to which the first node intends to transmit;

detecting a first interfering signal based on the performed first LBT;

performing a second LBT in a second beam direction;

detecting a second interfering signal based on the performed second LBT;

determining a set of transmission parameters based on the determinations of the first and second LBT;

transmitting a transmission to the second node using the determined set of transmission parameters;

determining a set of LBT parameters of the second LBT based on a beam direction of the first LBT; and

performing the second LBT in the second beam direction according to the determined set of LBT parameters.

2. The method of claim 1 , wherein the determined set of transmission parameters comprises any of a beamwidth configuration, a modulation coding scheme (MCS), a transmission backoff time, a number of predefined beams and a transmission power.

3. The method of claim 1 , wherein the determination of the set of transmission parameters further comprises interfering signal level of the first and of the second interfering signal.

4. The method of claim 1 , comprising receiving, from the second node, a message comprising configuration information on a directional channel of transmission/reception with the first node;

determining a set of LBT parameters of the second LBT based on the received message; and

performing the second LBT in the second beam direction according to determined set of LBT parameters.

5. The method of claim 4 , wherein the set of LBT parameters of the second LBT comprises any of a number of beams, a beamwidth, a beam direction and an energy detection threshold.

6. The method of claim 1 , wherein the determined set of LBT parameters of the second LBT comprises any of a number of beams, a beamwidth, a beam direction, and an energy detection threshold.

7. The method of claim 1 , comprising determining an energy detection threshold as a function of the determined set of LBT parameters of the second LBT, wherein determining if a second interfering signal is detected comprises comparing the second interfering signal with the energy detection threshold.

8. The method of claim 1 , wherein performing the second LBT in the second beam direction is a function of a set of LBT parameters, and wherein the set of LBT parameters is determined based on hybrid automatic repeat request received from the second node.

9. A wireless transmit/receive unit (WTRU) configured to reserve a directional channel, the WTRU comprising:

a processor; and

a memory storing a plurality of instructions that, when executed by the processor, cause the processor to:

perform a first listen-before-talk (LBT) in a first beam direction towards a second WTRU to which the WTRU intends to transmit;

detect a first interfering signal based on the performed first LBT;

perform a second LBT in a second beam direction;

detect a second interfering signal based on the performed second LBT;

determine a set of transmission parameters based on the determinations of the first and second LBT;

transmit a transmission to the second WTRU using the determined set of transmission parameters;

determine a set of LBT parameters of the second LBT based on a beam direction of the first LBT; and

perform the second LBT in the second beam direction according to the determined set of LBT parameters.

10. The WTRU of claim 9 , wherein the determined set of transmission parameters comprises any of a beamwidth configuration, a modulation coding scheme (MCS), a transmission backoff time, a number of predefined beams and a transmission power.

11. The WTRU of claim 9 , wherein the determination of the set of transmission parameters further comprises interfering signal level of the first and of the second interfering signal.

12. The WTRU of claim 9 , further configured to:

receive, from the second WTRU, a message comprising configuration information on a directional channel of transmission/reception with the WTRU;

determine a set of LBT parameters of the second LBT based on the received message; and

perform the second LBT in the second beam direction according to determined set of LBT parameters.

13. The WTRU of claim 12 , wherein the set of LBT parameters of the second LBT comprises any of a number of beams, a beamwidth, a beam direction and an energy detection threshold.

14. The WTRU of claim 9 , wherein the determined set of LBT parameters of the second LBT comprises any of a number of beams, a beamwidth, a beam direction, and an energy detection threshold.

15. The WTRU of claim 9 , further configured to:

determine an energy detection threshold as a function of the determined set of LBT parameters of the second LBT,

wherein determining if a second interfering signal is detected comprises comparing the second interfering signal with the energy detection threshold.

16. The WTRU of claim 9 ,

wherein performing the second LBT in the second beam direction is a function of a set of LBT parameters, and

wherein the set of LBT parameters is determined based on hybrid automatic repeat request received from the second WTRU.

17. The method of claim 1 , wherein the second beam direction is opposite to the first beam direction.

18. The WTRU of claim 9 , wherein the second beam direction is opposite to the first beam direction.

Assignments (2)

Continuity (4)

References Cited (33)