公开(公告)号：US20250039925A1

公开(公告)日：2025-01-30

申请号：US18716008

申请日：2021-12-14

Applicant: Nokia Technologies Oy

Inventor： Nuno Manuel KIILERICH PRATAS ,  Ling YU ,  Torsten WILDSCHEK ,  Vinh VAN PHAN ,  Yong LIU ,  Tao TAO ,  Naizheng ZHENG

IPC: H04W74/0808 ,  H04W24/08

Abstract: Example embodiments of the present disclosure relate to adjustment of contention window (CW) for listen before talk (LBT). A device determines a target size of a contention window for listen before talk at least in part based on at least one of a first metric and a second metric. The first metric indicates a level of intra-system activity of one of the plurality of systems. The second metric indicates a level of inter-system activity of the plurality of systems. The at least one of first and second metrics are determined by the device based on one or more messages in a set of resources shared by a plurality of systems. This solution enables the device to adjust the LBT by determining the target size of the contention window. By doing so, the device may determine an appropriate size of the contention window even when HARQ feedback is not available. In this way, a system may be able to coexist fairly with other systems in unlicensed spectrum.

公开(公告)号：US20240340955A1

公开(公告)日：2024-10-10

申请号：US18615638

申请日：2024-03-25

Applicant: Nokia Technologies Oy

Inventor： Laura Luque SANCHEZ ,  Renato Barbosa ABREU ,  Jakob Lindbjerg BUTHLER ,  Nuno Manuel KIILERICH PRATAS ,  Thomas Haaning JACOBSEN

IPC: H04W74/0816 ,  H04L5/00 ,  H04W76/28 ,  H04W92/18

CPC classification number: H04W74/0816 ,  H04L5/0053 ,  H04W76/28 ,  H04W92/18

Abstract: A method, apparatus, and computer program for determining, by transmitting user equipment, absence of a feedback message from receiving user equipment, which feedback message is related to a transmission of the transmitting user equipment over a sidelink to the receiving user equipment; determining by the transmitting user equipment whether the feedback message is absent from a sidelink physical feedback channel associated with a listen before talk type 2 channel access or with a shared channel occupancy time; and performing a first action that comprises incrementing a discontinuous reception counter associated with the sidelink in response to determining that the feedback message is absent from the sidelink physical feedback channel associated with the listen before talk type 2 channel access or with the shared channel occupancy time.

公开(公告)号：US20240306198A1

公开(公告)日：2024-09-12

申请号：US18571075

申请日：2021-06-22

Applicant: Nokia Technologies Oy

Inventor： Ling YU ,  Vinh VAN PHAN ,  Nuno Manuel KIILERICH PRATAS ,  Yong LIU ,  Tao TAO ,  Naizheng ZHENG ,  Lianghai JI

IPC: H04W74/0808 ,  H04W16/14 ,  H04W92/18

CPC classification number: H04W74/0808 ,  H04W16/14 ,  H04W92/18

Abstract: According to embodiments of the present disclosure, a first device determines one or more second devices to share a channel occupancy time (COT) for a sidelink transmission over an unlicensed spectrum bands. The first device transmits the information which indicates the COT to be shared by the first device and the one or more second devices. The second device determines a transmission gap within the COT and performs a LBT/CCA on the unlicensed spectrum bands based on the determined gap. In this way, it achieves sharing the COT among SL devices. It can improve spectrum efficiency and avoid resource waste.

公开(公告)号：US20240259823A1

公开(公告)日：2024-08-01

申请号：US18560561

申请日：2021-05-19

Applicant: Nokia Technologies Oy

Inventor： Nuno Manuel KIILERICH PRATAS ,  Tao TAO ,  Ling YU ,  Vinh VAN PHAN ,  Yong LIU ,  Naizheng ZHENG

IPC: H04W16/14 ,  H04W74/00

CPC classification number: H04W16/14 ,  H04W74/002

Abstract: Example embodiments of the present disclosure relate to sidelink (SL) transmission enhancement. A first device determines a channel occupancy time (COT) to be shared by the first device and at least one second device for transmissions on a shared radio frequency band; selects a first time slot during the COT for a transmission; and performs the transmission in the first time slot by extending the transmission to a first guard period of the first time slot or to a second guard period of a second time slot prior to the first time slot during the COT. By doing so, a channel access procedure requiring a smaller time gap between transmissions can be selected and performed, which can thus improve the flexibility of channel access procedures for SL transmission in the shared frequency band.

公开(公告)号：US20240163921A1

公开(公告)日：2024-05-16

申请号：US18478671

申请日：2023-09-29

Applicant: Nokia Technologies OY

Inventor： Nuno Manuel KIILERICH PRATAS ,  Torsten WILDSCHEK ,  Renato Barbosa ABREU ,  Laura Luque SANCHEZ ,  Jianguo LIU ,  Jakob Lindbjerg BUTHLER

IPC: H04W74/08

CPC classification number: H04W74/0808

Abstract: Systems, methods, apparatuses, and computer program products for detecting consistent listen before talk failure cases and suitably recovering from such failure cases in the implementation of sidelink for unlicensed bands are provided. For example, a method can include monitoring a transmission resource pool in which the apparatus is operating. The transmission resource pool can include resource block sets, each of which can be monitored. The monitoring can be applied to resource block sets for which a prohibit timer is not running or is expired. The monitoring can be performed to detect listen before talk failures of the apparatus for each monitored resource block set of the plurality of resource block sets. The method can also include triggering or declaring a consistent listen before talk failure for the monitored resource block set when the count value of detected failures exceeds a threshold.

公开(公告)号：US20240113815A1

公开(公告)日：2024-04-04

申请号：US17957383

申请日：2022-09-30

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Ling YU ,  Nuno Manuel KIILERICH PRATAS ,  Daniel MEDINA ,  Torsten WILDSCHEK ,  Vinh VAN PHAN ,  Faranaz SABOURI-SICHANI ,  Jari Olavi LINDHOLM ,  Thomas Haaning JACOBSEN

IPC: H04L1/18

CPC classification number: H04L1/1825 ,  H04L1/1812

Abstract: Systems, methods, apparatuses, and computer program products for user equipment behavior with respect to hybrid automatic repeat request retransmission in new radio sidelink co-existence scenarios with another technology are provided. For example, a method can include enabling, for a receiving user equipment, hybrid automatic repeat request negative acknowledgement only feedback. The method can also include first determining whether to condition negative feedback on at least one first condition, or second determining whether negative feedback is conditioned on at least one second condition. The method can further include third determining whether to retransmit a message according to hybrid automatic repeat request according to results of the first determining or the second determining. The method can additionally include communicating with the receiving user equipment based on a result of the third determining.

公开(公告)号：US20230239941A1

公开(公告)日：2023-07-27

申请号：US18001229

申请日：2021-06-08

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Srinivasan SELVAGANAPATHY ,  Faranaz SABOURI-SICHANI ,  Nuno Manuel KIILERICH PRATAS

IPC: H04W76/11

CPC classification number: H04W76/11 ,  H04W88/06

Abstract: Apparatuses and methods in a communication system are provided. A first radio resource connection, RRC, with a Radio Access Network, RAN, node is established (502) by a device, the connection having a first Radio Network Temporary Identifier and being associated with a first subscription identity. An RRC setup procedure for establishing a second RRC is performed (504), the connection being associated with a second subscription identity. During or after the RRC setup it is indicated to the RAN node that the device has an existing radio resource connection with the node. A second Radio Network Temporary Identifier associated with the second radio resource connection and an additional Radio Network Temporary Identifier common to the first and second radio resource connections are received (506) and the common Identifier is used (508) for communication with the RAN node.

公开(公告)号：US20230217488A1

公开(公告)日：2023-07-06

申请号：US18001169

申请日：2020-07-13

Applicant: Nokia Technologies Oy

Inventor： Claudio ROSA ,  Nuno Manuel KIILERICH PRATAS ,  Olli ALANEN ,  Mika KASSLIN ,  Adrian GARCIA RODRIGUEZ ,  Lorenzo GALATI GIORDANO

IPC: H04W74/08 ,  H04W72/23

CPC classification number: H04W74/0808 ,  H04W72/23

Abstract: An apparatus comprising: at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to perform: receiving control information including a slot format indicator configured to indicate scheduled channel usage for time units, wherein the slot format indicator includes at least one indicator configured to indicate that simultaneous uplink and downlink communications are scheduled to occur on a shared channel in at least one of the time units; and determining a type of channel sensing to use prior to initiating an uplink transmission on at least a portion of the shared channel based, at least in part, on the control information, wherein determining a type of channel sensing to use comprises analysing the scheduled channel usage for, at least, the time unit in which the uplink transmission is scheduled to be initiated and the time unit before the time unit in which the uplink transmission is scheduled to be initiated.

公开(公告)号：US20230164737A1

公开(公告)日：2023-05-25

申请号：US18054673

申请日：2022-11-11

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Oana-Elena BARBU ,  Nuno Manuel KIILERICH PRATAS ,  Benny VEJLGAARD

IPC: H04W64/00 ,  G01S5/02

CPC classification number: H04W64/003 ,  G01S5/0273

Abstract: A method, apparatus and computer readable medium are provided for determining position information of a receiver device. The method includes determining a plurality of beams and combining received multipath signals from the plurality of the beams. The received multipath signals are generated by a transmitter device. The method also includes determining, based at least in part on the combined received multipath signals, a line of sight signal and determining, based at least in part on the line of sight signal, position information of a receiver device.

公开(公告)号：US20230042849A1

公开(公告)日：2023-02-09

申请号：US17781546

申请日：2020-11-18

Applicant: Nokia Technologies Oy

Inventor： Faranaz SABOURI-SICHANI ,  Frank FREDERIKSEN ,  Thomas Haaning JACOBSEN ,  Nuno Manuel KIILERICH PRATAS

IPC: H04W48/20 ,  H04W72/12 ,  H04W68/00

Abstract: Method, apparatus, computer program for a user equipment having at least two connections to at least two network nodes, where each connection corresponds to a different user identity, selecting by the user equipment one of the at least two network nodes to communicate exclusively with during one or more time intervals; and sending by the user equipment one or more messages toward the other ones of the at least two network nodes, the one or more messages indicating to the other ones of the at least two network nodes that the user equipment is unavailable for communication during the one or more time intervals.