Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Information Technology Centre Europe B.v.

Mitsubishi Electric Information Technology Center Europe B.v.

Mitsubishi Electric R&d Centre Europe B.v.

Loic Brunel

Nicolas Gresset

David Mottier

Damien Castelain

Herve Bonneville

Mourad Khanfouci

Cristina Ciochina

Joseph Boutros

Alain Mourad

Noriyuki Fukui

Yoshitaka Hara

Arnaud Bouttier

Cristina Ciochina-Duchesne

Jonathan Letessier

Julien Guillet

Kazumasa Suzuki

Hiroyasu Sano

Masatsugu Higashinaka

Benoit Chauviere

Bruno Jechoux

A method for managing a fronthaul network in a wireless communication system, the fronthaul network comprising several distributed units and one or more central units, is proposed. The method comprises: performing fronthaul network dynamic configuration on the fronthaul network, the fronthaul network dynamic configuration comprising, at a controller of the wireless communication system: obtaining information indicating a positioning of the mobile terminal, obtaining, based on the information indicating a positioning of the mobile terminal, a set of one or more active distributed units among the plurality of distributed units, determining first associations between each of the active distributed units and one or more first respective central units of the one or more central units, and configuring communication links between each of the active distributed units and their first respective one or more central units according to the determined first associations.

Method for managing fronthaul network, apparatus, computer program product, and data set

A method and a device for forming a DFT-spread OFDM symbol including data and pilots, comprising:

Method and device for forming DFT-spread OFDM symbol including data and pilots

The present invention concerns a method for determining a power of at least one crosspolar interferer in a frame received by a receiver comprising at least a first and a second receive antennas detecting a first and a second polarization, the frame being transmitted from a satellite transmitter comprising at least a first and a second transmit antennas, the first transmit antenna being used for transferring signal representative of the frames to the receiver on the first polarization, the second transmit antenna being used for transferring signal to another receiver using the same frequency and the second polarization. The method comprises the steps of: &#x2014;obtaining the antenna gains between the satellite transmitter and the receiver, &#x2014;estimating a value of the atmospheric attenuation between the satellite transmitter and the receiver, a crosspolar attenuation, the channels between the first and second transmit antennas and the receiver, &#x2014;estimating the power of the at least one interferer from the obtained antennas gains and estimations.

Method and device for determining power of at least one crosspolar interferer in frame

For performing K individual transmissions between an access point managing a cell of a wireless communications network to plural mobile terminals via time and frequency resources from amongst a predefined set of candidate time and frequency resources on a per frame period basis, one time and frequency resource being allocated to each one of the K individual transmissions in a considered frame period, the access point: obtains a frequency allocation descriptor F indicating which frequency resource is allocated in the considered frame period to each one of the K individual transmissions; obtains a frequency occurrence descriptor G indicating how many times each candidate frequency resource is used for performing the K individual transmissions in the considered frame period; signals the frequency occurrence descriptor G in said cell; and enables transmitting data for the K individual transmissions in accordance with the frequency allocation descriptor F and a predetermined frequency sequencing rule.

Method for signaling time and frequency resources allocation in wireless communication system

For determining time and frequency resources, a first device performs: obtaining groups of time and frequency resources of the wireless communications network so as to form a redrawn grid; allocating time and frequency resources according to the redrawn grid and to a frequency hopping criteria; and providing signalling information representative of the time and frequency resources that have been allocated according to the redrawn grid. In order to determine which time and frequency resources of the initial grid to be used for performing said transmissions, a second device performs: obtaining the signalling information so as to determine the time and frequency resources that have been allocated according to the redrawn grid; and applying a predetermined pattern mask onto the determined time and frequency resources that have been allocated according to the redrawn grid.

Method and system for determining time and frequency resources

For allocating resources for a downlink communication on a frequency selective channel from an access point of a wireless telecommunications network to a communication device located in a moving conveyance performing a journey on a path, a processing device performs: obtaining a first interference profile according to a position of the moving conveyance on the path, said first interference profile being representative of interference on said downlink communication implied by at least one interferer located along the path; obtaining a second interference profile, said second interference profile being representative of interference on said downlink communication implied by at least one interferer located in the moving conveyance; and allocating the resources for said downlink communication, on the basis of the first and second interference profiles.

Method, processing device and information storage means for allocating resources for a downlink communication on a frequency selective channel

The present invention concerns a method for determining if at least one interferer generated by cross polarization interference is present in a received frame. The method comprises the steps of: &#x2014;analyzing the received frame using a sliding window which analyzes at least a part of a first and second planes of the received frame, &#x2014;determining a factor of merit for each position of the sliding window, &#x2014;comparing each factor of merit to a threshold in order to determine if at least one interfered zone is present in the received frame, &#x2014;analyzing the factors of merit in order to determine the number of interferers which are present in each interfered zone, &#x2014;determining the start/end positions of each interferer in the first and second planes of the received frame.

Method and device for determining if at least one interferer generated by cross polarization interference is present in received frame

Considering individual sequences T, . . . , Tover N successive frames for performing K individual transmissions, one time and frequency resource is allocated to each individual transmission per frame. The time and frequency resources can be represented by a grid with time resources on one dimension and frequency resources on another dimension. A managing device: computes a figure of merit G(A, T, . . . , T) for each possible set of the individual sequences T, . . . , Tover the N successive frames on which respective frequency hopping sequences [A, . . . , A]=A apply, the figure of merit G(A, T, . . . , T) being representative of transmission robustness to interference and/or noise and/or path loss, and being determined under a constraint such that the frequency hopping sequences A, . . . , Aare defined among a predefined set of allowable frequency hopping sequences which is a subset of all the time and frequency resources sequences made possible by said grid; and selects the set of individual sequences T, . . . , Tshowing the best figure of merit G(A, T, . . . , T).

Method and device for determining time and frequency resources from amongst time and frequency resources of wireless communications network

A method for enabling a mobile terminal to continue to be served by a home base station when the mobile terminal is in a coverage area of the serving home base station and the coverage area of the serving home base station starts superposing with a coverage area of another home base station having a same physical cell identity and being synchronized with the serving home base station, each home base station broadcasting the physical cell identifier in its coverage area. The method includes: determining that the coverage areas start superposing, determining at least one timing offset to be applied at a predetermined moment by at least one of the home base stations for transferring signals in its cell, transmitting to the mobile terminal the at least one timing offset and the moment, and applying the at least one timing offset at the moment.

Method and a system for enabling a mobile terminal to continue to be served by a home base station

The present invention concerns a method for transmitting data to at least one receiver, data being decomposed in a first and a second streams. The method comprises the steps of: &#x2014;identifying, from a first number of bits of the first stream, a cluster of constellation points among clusters of constellation points of an amplitude phase shift keying constellation, each cluster of constellation points being comprised in a respective circle sector of a first type, each circle sector of the first type being spaced from another circle sector of the first type by a circle sector of a second type, all circle sectors having the same central point, &#x2014;identifying, from a second number of bits of the second stream, one constellation point out of the constellation points comprised in the identified cluster, &#x2014;mapping the bits used for identifying to the identified constellation point of the identified cluster of constellation points, in order to form a symbol to be transmitted, &#x2014;transmitting the symbol to the at least one receiver.

Method, device and computer program for transmitting data to at least one receiver, and method, device and computer program for receiving data transmitted by a source

For allocating time and frequency resources for at least one data transmission via a fast fading frequency selective channel between an access point of a wireless telecommunications network and at least one communication device located in at least one respective moving conveyance, a processing device: obtains long-term SINR information for a set of time and frequency resources; obtains at least one frequency correlation profile; obtains at least one time correlation profile; computes figures of merit for potential sequences of time and frequency resources, based on the obtained long-term signal-plus-interference to noise ratio information and on the obtained time and frequency correlation profiles; selects a sequence that provides a figure of merit that expects reaching a target quality of service for said data transmission(s) or that is the best figure or merit; allowing said data transmission(s) via the selected sequence.

Method and processing device for allocating time and frequency resources for at least one data transmission via a fast fading frequency selective channel

The present invention concerns a method and a device for adjusting the transmission of the signals transferred by a home base station through a wireless interface, the home base station is located in a cell of a base station, the home base station belongs to a first tracking area, the base station belongs to a second tracking area in which a mobile is supposed to be. The home base station:

Method and device for adjusting the transmission of the signals

A method and apparatus for adjusting the transmission power of signals transferred by at least one home base station through a wireless interface to a mobile device, the at least one home base station being located in the cell of a base station. The transmission power is adjusted by first performing an inter cell interference coordination procedure including determining at least one high interference reference zone for the at least one home base station. Then the signal transmission power adjustment for the at least one home base station is determined to ensure a given outage probability that a given function g representing the mobile terminal performance degradation is lower than or equal to a threshold value in the high interference reference zone around the at least one home base station.

Method for adjusting the transmission power of the signals transferred by at least one home base station

A method enabling a mobile terminal to access a wireless cellular telecommunication network including plural base stations and a core network device. The mobile terminal is allowed to access the wireless cellular telecommunication network through at least one first base station and memorizes a list including information enabling the identification of signals transferred by each first base station, the mobile terminal not memorizing information enabling the identification of signals transferred by second base stations. One second base station: receives a message requesting the second base station to transfer signals that should be transferred by one first base station, transfers signals that should be transferred by the first base station, and broadcasts information enabling the identification by the mobile terminal of other signals transferred by the second base station and/or at least one other second base station.

Method and a device for enabling a mobile terminal to access to a wireless cellular telecommunication network

A method for deciding if a telecommunication device has to be switched in an operating mode which is different from the operating mode in which the telecommunication is operating. In an operating mode, the telecommunication device relays signals transferred between a terminal and an access node which handles the terminal. In another operating mode, the telecommunication device handles the terminal. The method includes: determining, from obtained information, if a predetermined event occurs, and if the predetermined event occurs, deciding that a handover of the terminal has to be conducted between the access node and the telecommunication device, and deciding that the telecommunication device has to switch in an operating mode which is different from the operating mode in which the telecommunication is operating.

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Rennes Cedex, France

Loic Brunel