公开(公告)号：US20240120979A1

公开(公告)日：2024-04-11

申请号：US18274729

申请日：2022-02-03

Applicant: INSTITUT MINES TELECOM

Inventor： Ghaya REKAYA BEN-OTHMAN ,  Aymen ASKRI ,  Chao ZHANG

IPC: H04B7/06 ,  H04B17/336

CPC classification number: H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B17/336

Abstract: A priority-resource-limited CoMP scheme is proposed based on a coordination priority index of users which comes into play to perform cooperation set selection and resource allocation in small cell networks. The CoMP control unit (CCU) configures and then transmits to the donor (serving) Transmission/Reception Point (TRP) the coordination priority index which is determined as a function of the required Bit Rate for that specific User Equipment and the SINR or the CQI. The donor Transmission/Reception Point (TRP) then transmits the coordination priority indexes sent by the CCU to the corresponding User Equipment (UE)s. The configuration of the coordination priority index allows the User Equipment to select a subset of Channel State Information reports or Channel State Information quantities to report so that the threshold index of the coordination priority is met.

公开(公告)号：US20240106498A1

公开(公告)日：2024-03-28

申请号：US18274233

申请日：2022-02-03

Applicant: INSTITUT MINES TELECOM

Inventor： Ghaya REKAYA BEN-OTHMAN ,  Chao ZHANG ,  Aymen ASKRI

IPC: H04B7/024 ,  H04B7/0456

CPC classification number: H04B7/024 ,  H04B7/0456

Abstract: A communication system having to an open radio access network architecture, the communication system includes a number (K) of user equipments configured to exchange messages through the communication system, the communication system comprising one or more radio unit and a distributed unit, each radio unit being connected to the distributed unit through a fronthaul link having a given capacity. The communication system comprises a coordination system being configured to coordinate the exchanges between the radio units of the system and the distributed unit, in response to a signal received by the radio units from a user equipment. The coordination system is configured to send a signalling message to each radio unit comprising data stream selection information, each radio unit comprising: a transformation unit configured to apply a transformation operation to the signal vector received by the radio unit, which provides a transformed vector, the transformation operation being defined to reduce the dimension of the received signal vector; a data stream selection unit configured to select a number of data streams corresponding to components of the transformed vector using the data stream selection information comprised in the signalling message, a quantizer configured to apply a quantization operation to the selected data streams, which provides quantized vectors, the radio unit being configured to send the quantized vectors to the distributed unit. The sum of the numbers of data streams selected at the radio units, over all the radio units of the communication system, is higher or equal to the product of the number of user equipments (K) and the number of antennas of a user equipment.

公开(公告)号：US20240030969A1

公开(公告)日：2024-01-25

申请号：US18026561

申请日：2021-09-24

Applicant: INSTITUT MINES TELECOM

Inventor： Ghaya REKAYA ,  Aymen ASKRI

IPC: H04B7/0456 ,  H04B7/0452

CPC classification number: H04B7/0456 ,  H04B7/0452

Abstract: A precoder for precoding a vector of information symbols to be sent to a plurality of users, the precoder includes a user ordering and grouping unit configured to group the plurality of users depending on one or more quality of service indicators and on modulation and coding parameters associated with the plurality of users, the user ordering and grouping unit being configured to divide a predefined upper triangular precoding matrix into a plurality of sub-matrices and to divide the vector of information symbols into a plurality of sub-vectors, each sub-vector comprising information symbols to be sent to a group of users, the sub-vectors being arranged according to an arbitrary order of the one or more quality of service indicators; a precoding unit configured to determine a perturbation vector according to the minimization of a transmit power metric, the perturbation vector comprising a plurality of perturbation sub-vectors, each perturbation sub-vector corresponding to a sub-vector of information symbols, the precoding unit being configured to determine an estimate of each perturbation sub-vector by applying a recursive search algorithm.

公开(公告)号：US20220253670A1

公开(公告)日：2022-08-11

申请号：US17620717

申请日：2020-06-24

Applicant: INSTITUT MINES-TELECOM

Inventor： Ghaya REKAYA ,  Aymen ASKRI

IPC: G06N3/04 ,  G06F17/16 ,  G06K9/62

Abstract: A lattice prediction device for predicting a number of lattice points falling inside a bounded region in a given vector space is provided. The bounded region is defined by a radius value, a lattice point representing a digital signal in a lattice constructed over the vector space. The lattice is defined by a lattice generator matrix comprising components. The lattice prediction device comprises a computation unit configured to determine a predicted number of lattice points by applying a machine learning algorithm to input data derived from the radius value and the components of lattice generator matrix.

公开(公告)号：US20220247605A1

公开(公告)日：2022-08-04

申请号：US17620715

申请日：2020-06-23

Applicant: INSTITUT MINES-TELECOM

Inventor： Ghaya REKAYA ,  Aymen ASKRI

IPC: H04L25/03 ,  G06N3/04 ,  G06N20/10

Abstract: A decoder for decoding a signal received through a transmission channel represented by a channel matrix using a search sphere radius. The decoder comprises a radius determination device for determining a search sphere radius from a preliminary radius. The radius determination device is configured to: i. apply a machine learning algorithm to input data derived from the received signal, the channel matrix and a current radius, the current radius being initially set to the preliminary radius, which provides a current predicted number of lattice points associated with the current radius; ii. compare the current predicted number of lattice points to a given threshold; iii. update the current radius if the current predicted number of lattice points is strictly higher than the given threshold, the current radius being updated by applying a linear function to the current radius; Steps i to iii are iterated until a termination condition is satisfied, the termination condition being related to the current predicted number, the radius determination device being configured to set the search sphere radius to the current radius in response to the termination condition being satisfied.

公开(公告)号：US20220247460A1

公开(公告)日：2022-08-04

申请号：US17620716

申请日：2020-06-23

Applicant: INSTITUT MINES-TELECOM

Inventor： Ghaya REKAYA ,  Aymen ASKRI

IPC: H04B7/0456 ,  G06N20/00

Abstract: A precoder for precoding a vector of information symbols is provided. The precoder includes a radius determination unit configured to determine a search sphere radius, the determination of the search sphere radius comprising applying a machine learning algorithm to input data dependent on the vector of information symbols and on a predefined precoding matrix; a sphere encoding unit configured to determine a perturbation vector from lattice points found inside a spherical region by applying a sphere search-based sequential algorithm, the spherical region having as a radius the search sphere radius, and a precoding unit configured to precode the vector of information symbols using the perturbation vector and a precoding matrix.