公开(公告)号：US20220182111A1

公开(公告)日：2022-06-09

申请号：US17518199

申请日：2021-11-03

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Pavan KOTESHWAR SRINATH ,  Jakob HOYDIS

IPC: H04B7/0413 ,  H04L25/02

Abstract: Embodiments can include receiving transmissions over a channel at a receiver of a MIMO communication system; the transmissions are received from a plurality of transmitters in communication with the receiver. Each communication is a separate communication having a modulation and coding scheme. An estimate of the channel is converted into an estimate, for each of a plurality of transmitters, of a bit-metric decoding rate for each of a plurality of MIMO detectors. The estimated bit-metric decoding rate for each of the transmitters for each of the MIMO detectors is converted into an estimated bit error rate for each of the MIMO detectors for each of the transmitters. One of the MIMO detectors is selected for use in generating log-likelihood ratios for bits transmitted from the transmitters to the receiver. The one of the MIMO detectors is selected based on the estimated bit-error rates and a target block error rate.

公开(公告)号：US20230199705A1

公开(公告)日：2023-06-22

申请号：US17924947

申请日：2021-05-07

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Pavan KOTESHWAR SRINATH ,  Jakob HOYDIS

IPC: H04W64/00 ,  H04W24/02 ,  H04B7/06

CPC classification number: H04W64/006 ,  H04W24/02 ,  H04B7/0626 ,  G06N3/02

Abstract: According to the present disclosure, a first dataset comprising CSI measurements associated with first UEs and actual positions of the first UEs within a coverage region of a network node is received. Then, a second dataset comprising at least one CSI measurement associated with at least one second UE whose position within the coverage region of the network node is to be estimated is received. After that, based on the first and second datasets, the at least one CSI measurement associated with the at least one second UE is assigned to one of the first UEs that appears closest to the at least one second UE. Finally, the position of the at least one second UE within the coverage region of the network node is estimated by using a semi-supervised machine learning algorithm that receives the first and second datasets and the actual position of the closest first UE.

公开(公告)号：US20210219099A1

公开(公告)日：2021-07-15

申请号：US17145955

申请日：2021-01-11

Applicant: Nokia Technologies Oy

Inventor： Pavan KOTESHWAR SRINATH ,  Jakob HOYDIS

IPC: H04W4/029 ,  G01S5/02

Abstract: An apparatus, method and computer program is described comprising: generating a first loss function component comprising comparing first location data with first location estimates, wherein the first location estimates are based on channel state data, wherein the first location estimates are generated using a model, and wherein the model comprises a plurality of trainable parameters; generating a second loss function component comprising comparing the first location data with second location estimates, wherein the second location estimates are based on channel state data that have been subjected to a first augmentation and wherein the second location estimates are generated using the model; generating a third loss function component comprising comparing third location estimates based on channel state data and fourth location estimates based on channel state data that have been subjected to a second augmentation, wherein the third and fourth location estimates are generated using the model; and training the trainable parameters of the model by minimising a loss function based on a combination of the first, second and third loss function components.

公开(公告)号：US20230055959A1

公开(公告)日：2023-02-23

申请号：US17794310

申请日：2020-01-24

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Pavan KOTESHWAR SRINATH ,  Fahad SYED MUHAMMAD ,  Afef FEKI ,  Veronlque CAPDEVIELLE

IPC: H04L5/00 ,  G06N3/08

Abstract: An apparatus, method and computer program is described including: obtaining first channel measurement data for a primary component carrier used for communications between a device and a network node of a mobile communication system; providing the first channel measurement data as an input to an algorithm to obtain a first embedding output; comparing the first embedding output with embedding outputs of a plurality of reference channel measurement data input to said algorithm to identify a closest reference channel measurement data to the first channel measurement data; identifying a set of reference channel information associated with the identified closest reference channel measurement data, wherein the identified set of reference channel information includes a carrier aggregation policy defining one or more secondary communication channels; and setting a carrier aggregation policy for the primary component carrier in accordance with the carrier aggregation policy.

公开(公告)号：US20220369070A1

公开(公告)日：2022-11-17

申请号：US17762563

申请日：2019-12-18

Applicant: Nokia Technologies Oy

Inventor： Afef FEKI ,  Sankaran BALASUBRAMANIAM ,  Daejung YOON ,  Pavan KOTESHWAR SRINATH ,  Veronique CAPDEVIELLE

IPC: H04W4/029 ,  G06N3/08

Abstract: A method is provided for determining, at a first stage, a first position of a communications device, inputting, from the first stage, the first position to a machine learning model at a second stage, and determining, at the second stage, at least based on the first position from the first stage, a second position of the communications device by using the machine learning model. The first position is determined at the first stage by using one of at least a non-machine learning model and a machine learning model.