Abstract: A method for determining features of an error correcting code system, comprising independent error correcting codes and a polarization module, allowing transmitting a binary input vector on block fading sub-channels, the independent error correcting codes generating components of the binary input vector and a channel polarization being applied to the binary input vector by the polarization module. The method comprises: obtaining characteristics of the block fading sub-channels; and, determining features of said error correcting code system, comprising, for each error correcting code, a rate of said error correcting code, adapted to the obtained characteristics and minimizing a function of a probability that an instantaneous equivalent channel capacity of the block fading sub-channels is below a transmission rate transmitted on the block fading sub-channels.

Abstract: For determining, in a distributed fashion, precoders to be applied for performing transmissions of data between a plurality of transmitters and a plurality of receivers via a global MIMO channel H of a wireless communication system, said precoders jointly forming an overall precoder V, each and every j-th transmitter perform: gathering long-term statistics of CSIT errors incurred by each one of the transmitters; obtaining short-term CSIT related data and building therefrom its own view ?(j) of the global MIMO channel H; determining an estimate {tilde over (V)}(j) of the overall precoder V from the short-term CSIT related data; refining the estimate {tilde over (V)}(j) on the basis of the gathered long-term statistics of CSIT errors so as to obtain a refined precoder {tilde over (V)}(j) that is a view of the overall precoder V from the standpoint of said j-th transmitter, further on the basis of its own view ?(j) of the global MIMO channel H, and further on the basis of a figure of merit representative of perf

Abstract: A method of scheduling in a cellular system comprises: calculating an approximated scheduling metric (ASM) for each combination of users, and associated spatial streams, the ASM being a function of user capacities without taking into account interference; sorting the ASMs in descending order to obtain a classification of said combinations and calculating a local scheduling metric (LSM) for the first combination in said classification, the LSM being a function of real user capacities taking into account interference; then, for each following combination (FC) in the classification, comparing the ASM of the FC to a preceding calculated local scheduling metric (PCLSM), and if the ASM of the FC is higher than the PCLSM, then the LSM of said FC is calculated and then replaces said PCLSM; and otherwise, defining the combination providing the highest calculated LSM as the best combination of users and associated spatial streams.

Abstract: A polar-code based encoder is used to perform a transfer of useful data to a polar-code based decoder via a Binary Discrete-input Memory-less Channel. The Divide and Conquer structure consists of a multiplexer having useful data bits and a set of frozen bits as inputs followed by a polarization block of size N=2L, wherein the polarization block of size N comprises a set of front kernels followed by a shuffler and two complementary polarization sub-blocks of size N/2 with a similar structure as the polarization block of size N but with half its size. A dynamically configurable interleaver is present between the shuffler and one and/or the other of the complementary polarization sub-blocks at each recursion of the Divide and Conquer structure. The configuration of the dynamically configurable interleavers is dynamically modified according to changes detected in the Binary Discrete-input Memory-less Channel.

Abstract: A moving conveyance travels on a predefined path and includes an on-board wireless radio unit and an image-capturing device so as to capture images of the predefined path ahead the moving conveyance. A server remotely controlling the moving conveyance performs: receiving from the on-board wireless radio unit images captured by the image-capturing device; analyzing the received images so as to detect presence of obstacle ahead the moving conveyance on the predefined path; and instructing the on-board wireless radio unit to stop the moving conveyance in case of obstacle presence detection. Furthermore, the server performs: determining a field of view of the received images; and increasing quantity of uplink transmission resources allocated for allowing the on-board wireless radio unit to transmit the images toward the server, when a decrease of field of view is determined.

Abstract: A video-images capturing device is adapted to capture video-images of a predefined path ahead or behind a moving conveyance. The moving conveyance includes an on-board transceiver wirelessly transmitting encoded video-images toward a server. A learning phase includes: analysing encoded video-images captured during the learning phase and detecting encoding data rate peaks that exceed a predefined threshold in the encoded video-images; determining positions on the predefined path to which said detected encoding data rate peaks correspond; and storing information representing the determined positions in a database.

Abstract: The present invention concerns a method for estimating a level of damage of an electric device. The method comprises the steps of: forming a histogram of operating cycles related to the electric device for which the level of damage estimation is performed, comparing the formed histogram to histograms of a collection of histograms or to combinations of histograms of the collection of histograms, each histogram of the collection of histogram being associated to a level of damage, in order to determine the histogram of the collection of histograms or the combination of histograms which is the closest from the formed histogram, determining an estimate of the level of damage of the electric device from the level of damage of the closest histogram or from the levels of damages of the histograms of the closest combination of histograms.

Abstract: The present invention concerns a method for quantizing an interference profile for a wireless telecommunication system along a path that a moving device takes. The method comprises the steps of: obtaining, by a server, the location of the moving device along the path which corresponds to a measurement window, determining by using the location of the moving device, by the server, a format of feedback information, transferring to the moving device, a message comprising information related to the determined format, obtaining during the measurement window, measurements related to interference, processing the measurements in order to obtain feedback information in the format, transferring feedback information to the server, converting the feedback information in a format of a database related to interference profile, updating the database with the converted feedback information.

Abstract: In a wireless communication system, SINR data are obtained from power measurements data, as follows: gathering first power measurements data of total power received during communications; gathering second power measurements data of in-transmission interference power; computing third power measurements data of useful power, from the first and second power measurements data; gathering fourth power measurements data of out-transmission interference power; merging the second and fourth power measurements data so as to form a set of fifth interference power data; computing a first characteristic function from the third power measurements data, and computing a second characteristic function from the fifth power measurements data; building a third characteristic function relating to the SINR data related to the transmission channel, by performing a term-by-term product of the first and second characteristic functions; computing a probability mass function from the third characteristic function.

Abstract: A method for monitoring transmission in a wireless network comprising a radio access infrastructure and wireless devices, is provided. The method comprises: generate an estimated number of wireless devices according to a predetermined profile of number of wireless devices; generate an estimated trajectory of each of the estimated number of wireless devices according to a predetermined profile of trajectories; for each wireless device of the estimated number of wireless devices, determine an estimated distribution of the probabilities of radio transmission error during a time window using the estimated trajectory of the wireless device; and determine an estimate of a figure of merit of the wireless network based on the respective estimated distributions of the probabilities of radio transmission error during the time window for the wireless devices.

Abstract: The present invention relates to a method of managing transmission resources in an infrastructure (INF) comprising a plurality of wayside radio units (WRU).

Abstract: The method comprises: an exchange step during which said reference WRU (wayside radio unit) receives cooperation data generated by each of one or more other WRUs, the cooperation data generated by a given WRU being representative of respective failure probabilities of at least part of the devices in communication with said given WRU, each failure probability being representative of a probability of an interruption of the communication link between the considered device and the WRU in communication therewith, said interruption risking causing an emergency stop of the corresponding vehicle, an optimization step during which said reference WRU determines, based on said failure probabilities, a resource allocation scheme defining at least time-frequency resources allocated to all or part of the devices which are in communication with said reference WRU, an operation step, wherein said resource allocation scheme is implemented by said reference WRU.

Abstract: A method of scheduling in a cellular system comprises: calculating an approximated scheduling metric (ASM) for each combination of users, and associated spatial streams, the ASM being a function of user capacities without taking into account interference; sorting the ASMs in descending order to obtain a classification of said combinations and calculating a local scheduling metric (LSM) for the first combination in said classification, the LSM being a function of real user capacities taking into account interference; then, for each following combination (FC) in the classification, comparing the ASM of the FC to a preceding calculated local scheduling metric (PCLSM), and if the ASM of the FC is higher than the PCLSM, then the LSM of said FC is calculated and then replaces said PCLSM; and otherwise, defining the combination providing the highest calculated LSM as the best combination of users and associated spatial streams.

Abstract: A polar-code based encoder is used to perform a transfer of useful data to a polar-code based decoder via a Binary Discrete-input Memory-less Channel. The Divide and Conquer structure consists of a multiplexer having useful data bits and a set of frozen bits as inputs followed by a polarization block of size N=2L, wherein the polarization block of size N comprises a set of front kernels followed by a shuffler and two complementary polarization sub-blocks of size N/2 with a similar structure as the polarization block of size N but with half its size. A dynamically configurable interleaver is present between the shuffler and one and/or the other of the complementary polarization sub-blocks at each recursion of the Divide and Conquer structure. The configuration of the dynamically configurable interleavers is dynamically modified according to changes detected in the Binary Discrete-input Memory-less Channel.

Abstract: A scheduler allocates time-frequency resources of a predefined time period for transmitting latency-constrained and non latency-constrained data packets over a frequency selective channel. The scheduler: performs assignment of time-frequency resources for transmitting non latency-constrained data; then, possibly performs a revision of the assignment so that time-frequency resources are allocated to latency-constrained data packets instead of non latency-constrained data packets, said revision being performed by minimizing cost impact of the revision on a global performance metric related to the transmissions of said non latency-constrained data packets; and, allocates the time-frequency resources as assigned to the non latency-constrained data packets that did not incur the assignment revision, whereas the latency-constrained data packets that incurred the assignment revision are put aside for later scheduling.

Abstract: For determining parameters for configuring a regularized zero-forcing precoder aiming at being applied for transmitting data from a plurality of transmitters to a plurality of receivers via a MIMO transmission channel in a wireless communication system, and more particularly in a scope of massive MIMO approach, a first phase comprises: obtaining long-term statistics about observations of the MIMO transmission channel, and obtaining a power scaling factors aiming at meeting a power constraint P, by solving an optimization problem as a function of a signal to noise ratio asymptotic expression from the standpoint of each receiver. Then, a second phase comprises: obtaining an estimation of the MIMO transmission channel, and configuring the regularized zero-forcing precoder using the power scaling factors determined in the first phase as well as the obtained estimation of the MIMO transmission channel.

Abstract: A method and managing device for allocating transmission resources in a wireless communications network for performing K individual transmissions between an access point and mobile terminals, signalling information for enabling the mobile terminals to determine transmission resources allocated in a subsequent frame being transmitted in at least one transmission resource of each frame, a managing device, when considering (S401) allocating transmission resources in a frame t: obtains (S402) information representative of transmission resources allocated beforehand from frame t?W?T+2 to frame t?1; allocates (S403) transmission resources in frame t for performing K individual transmissions and transmission resources in frame t?x for transmitting signalling information related to frame t, by reviewing transmission resources allocations from frame t?W+1 to frame t?1 by relying on a figure of merit representative of a probability that at least one message in each one of the K individual transmissions is correctly rec

Abstract: For setting cooperation parameters of a communication system including a plurality of node devices interconnected by links and adapted to be respectively configured according to said cooperation parameters, a cooperation phase comprises: gathering measurements data representative of measurements of the random variables; optimizing the figure of merit for determining said cooperation parameters, on the basis of the obtained measurements. At least one link implying quantization operations relying on a codebook for gathering said measurements data and/or for providing said cooperation parameters, a pre-processing phase comprises beforehand: obtaining statistics data relative to a probability distribution of said random variables; and determining every codebook on the basis of the figure of merit, such that the figure of merit is statistically optimized according to the obtained statistics.

Abstract: For determining parameters for configuring a regularized zero-forcing precoder aiming at being applied for transmitting data from a plurality of transmitters to a plurality of receivers via a MIMO transmission channel in a wireless communication system, and more particularly in a scope of massive MIMO approach, a first phase comprises: obtaining long-term statistics about observations of the MIMO transmission channel, and obtaining a power scaling factors aiming at meeting a power constraint P, by solving an optimization problem as a function of a signal to noise ratio asymptotic expression from the standpoint of each receiver. Then, a second phase comprises: obtaining an estimation of the MIMO transmission channel, and configuring the regularized zero-forcing precoder using the power scaling factors determined in the first phase as well as the obtained estimation of the MIMO trans mission channel.

Abstract: The present invention concerns a method for quantizing an interference profile for a wireless telecommunication system along a path that a moving device takes. The method comprises the steps of: obtaining, by a server, the location of the moving device along the path which corresponds to a measurement window, determining by using the location of the moving device, by the server, a format of feedback information, transferring to the moving device, a message comprising information related to the determined format, obtaining during the measurement window, measurements related to interference, processing the measurements in order to obtain feedback information in the format, transferring feedback information to the server, converting the feedback information in a format of a database related to interference profile, updating the database with the converted feedback information.