Orange

France Telecom

B-com

Hao Lin

Pierre Siohan

Getachew Redieteab

Naila Lahbabi

Raphaël Visoz

Charbel Abdel Nour

Catherine Douillard

Bruno Jahan

Chrislin Lele

Tuan Anh Truong

Benoît Graves

A method for allocating resources on an uplink between a user terminal and a base station of a radio communication network multiplexing the data in resource blocks is disclosed. Such a method implements a standard allocation mode associated with a standard transmission mode of transmission by the terminal; and a priority allocation mode associated with a priority mode of transmission by the terminal. The network favors the priority allocation mode and can allocate to the terminal, according to the priority allocation mode, at least one resource block previously allocated according to the standard allocation mode, introducing a situation of allocation collision. In such a situation, the network implements a temporary allocation mode to allocate at least one replacement resource block in the standard transmission mode, implementing a number of signalling portions containing information on resource allocation greater than that used in the standard allocation mode.

Method for allocating resources and receiving a resource allocation

A method for managing a communication between a base station and a terminal. The terminal is associated with at least one memory having at least two storage areas. The terminal implements: at least one step of storing, in one of the storage areas, a state representative of a transmission, by the base station, of at least one current data packet and control information associated with the current data packet, called current transmission, the storage area being identified by a storage area indicator borne by the control information associated with the current data packet; and transmission, to the base station, of all states stored in the storage areas, when the terminal is authorized to emit.

Methods for communicating between a terminal and a base station, corresponding terminal, base station and computer program

A method for access to a communication network, implemented by a terminal. The method includes: receiving system information broadcast by the network, the system information including an identification of at least one time-frequency resource capable of carrying a piece of information relative to a unique terminal identifier; transmitting to the network an access request, the access request carrying a first piece of information representative of a unique identifier of the terminal, transmitted on one of the time-frequency resources identified on the basis of the system information, called specific resource; and authorizing access to the network in the case of reception of a response to the access request carrying a second piece of information representative of the unique identifier of the terminal.

Method for accessing a communication network, association method, terminal, base station, and corresponding computer programs

Use of a preamble conforming to a second protocol to which a preamble field conforming to a first protocol, different from the second one, is added, such as a protocol for accessing a mobile network deployed in an unlicensed band common to the second protocol, for any frame transmitted with a data field conforming to this first protocol.

Two-protocol transmission method, reception method and corresponding devices and signal

Mobile telephony operators are starting to use unlicensed frequency bands in order to increase the throughput of their mobile telephony network at a low cost. However, the use of the unlicensed frequency bands has certain drawbacks. It is difficult for a mobile terminal to use unlicensed frequency bands as the number of mobile terminals wishing to use these unlicensed frequency bands remains high given the capacities of these frequency bands. The development allows a user device located in a zone of overlapping radio coverage of two base stations to use a shared frequency band with a greater probability of access to the frequency band, while reducing the impact of interferences generated by communications established between user devices and the base stations to which they are connected.

Method for communication between two base stations using a shared frequency band, and corresponding base station and user device

In a vehicle to anything environment, in order to achieve good data reception, receiving equipment and transmission equipment are preconfigured and thus include all the parameters needed for data transmission. In order to increase the probability of the data being received by the receiving equipment, the transmission equipment uses a highly robust modulation and coding scheme to code and modulate the radio signal used to broadcast the data. However, the more robust the implemented modulation and coding scheme, the lower the spectral efficiency of the radio signal used for transmission. User equipments belonging to the same broadcast group are identified by means of an identifier of the broadcast group, which allows for the implementation of a mechanism of acknowledgement by the receiving equipments making it possible to inform the transmission equipment that an error has occurred in the reception of the broadcast data.

Method for transmitting a message comprising information relating to the reception of data by a piece of receiving equipment belonging to a broadcast group, corresponding devices and computer programs

A method for transmitting data by a device having a cell, called a second cell, conforming to a first protocol of a cellular access network and capable of transmitting in a frequency band shared with a network conforming to a second protocol and capable of implementing a listening-before-transmission (LBT) access mechanism. The method includes: using the LBT access mechanism by a first cell, and transmitting by the first cell an identification of a first sharing group, first channel sharing information and a transmission duration; using the LBT access mechanism with adaptation by the second cell to determine an interfering power separately from a received power of a transmission from the first cell; and enabling channel sharing with the first cell if the second cell belongs to the same first sharing group, the first channel sharing information authorizes the sharing and the interfering power does not exceed a given threshold.

Transmission method with LBT access to a channel, corresponding device and program

A method for managing a transmission of sequences of symbols of predetermined duration by means of a terminal having dual connectivity with a first device for accessing a network and with a second device for accessing a network is described, the terminal being configured to transmit, when dual-connected, sequences of symbols over a first uplink to the first access device and over a second uplink to the second access device during disjoint time intervals. The method includes obtaining an estimate of a difference between delays in propagation between the terminal and the first and second access devices, and configuring the terminal to introduce at least one guard interval in each transmission of at least one sequence of symbols over the first uplink, during which no data symbol is transmitted by the terminal over the first uplink, the at least one guard interval being introduced by the terminal at the start of a first sequence of symbols and/or at the end of a last sequence of symbols transmitted in the transmission over the first uplink, and occupying a number of symbols determined according to the estimate of the difference between the propagation delays.

Method for managing a transmission of sequences of data symbols

A method for handover between base stations of an access system for access to a core network including interconnections in a tree structure having wireless links and a single wired link. The wired link connects only one of the base stations, known as a donor node, to the core network. The interconnections between the base stations are solely wireless links. The method includes: transmitting, by a source base station of the access system, to which a terminal is attached, a handover request to a target base station of the access system, the source and target base stations being interconnected via at least one base station known as a decision-making node, which is different from the donor node; intercepting the handover request by the decision-making node; transmitting, by the decision-making node, an agreement message to the source base station; and transmitting a handover trigger message to the target base station.

Handover in a system with IAB

Integrated Access and Backhaul (IAB) nodes communicate with one another in half-duplex mode. Such a multiplexing of the communications of the IAB node requires simultaneous execution of a 'mobile terminal' function and of a 'base station' function by the IAB node. However, these two functions are not synchronised with one another, resulting in a lack of temporal alignment between the data communicated with the parent node and the data communicated with the child node, which causes interference that negatively impacts the quality of the communications between the different IAB nodes involved. Existing solutions suffer from long data processing times and are expensive. Accordingly, a time offset is introduced during the processing of the data by the child node, in order to take into account the lack of synchronisation between the &#x201c;mobile terminal&#x201d; function and the &#x201c;base station&#x201d; function of the current node.

Method for communication between IAB nodes in alternating bidirectional mode, allowing communication multiplexing

An Integrated Access and Backhaul (JAB) node incorporates two functions, a so-called 'base station' function and a so-called 'mobile terminal' function. In order to limit the interferences between base stations, all IAB nodes in the same network must be synchronised with one another. In order to ensure this synchronisation, each IAB node may use a time shift value transmitted by its parent node. However, since an IAB architecture is an arborescent architecture, errors in measuring an estimated time shift value for a given IAB node have repercussions on the measurements of estimated time shift values for its child node and so on. Accordingly, the &#x201c;base station&#x201d; function of a child IAB node is not activated as long as a time shift value determined by its parent node does not meet a synchronisation criterion.

Method for activating a 'base station' function in an IAB node

A method of telecommunication between a base station and user equipment. The method includes: identifying disjoint lists of pilots, namely a first for initial uplink transmissions and a second for uplink retransmissions, and defining a first mapping between the pilots of the two lists.

Method for data transmission and HARQ retransmission

A method for generating a multicarrier signal formed by a temporal succession of multicarrier symbols, implementing the following steps for generating at least one block of multicarrier symbols: coding a set of information elements delivering a set of coded elements; puncturing a first sub-set of coded elements of the set of coded elements, according to a first puncturing pattern, delivering a first sub-set of punctured coded elements; puncturing a second sub-set of coded elements of the set of coded elements, complementary to the first sub-set, according to a second puncturing pattern, delivering a second sub-set of punctured coded elements; mapping, onto at least one complex symbol, of the punctured coded elements of the first and second sub-sets of punctured coded elements; and generating the block of multicarrier symbols from said at least one complex symbol.

Method for producing a multi-carrier signal, device, and corresponding computer program

A method implementing the same frequency-time transform of size M irrespective of the service. The method adds, during a frame setup, a cyclic extension of L=L+Lsamples in order to obtain a sequence of M+L samples. The method carries out a time-domain filtering according to a function &#x192;(n) of the samples n of the sequence of M+L samples.

Method and device for multi-service transmission with FC-OFDM modulation and corresponding receiver

A method for transmitting multiple communications of different types, in particular sporadic (MTC) or cellular (broadband) communication including symbols to be transmitted, corresponding to communication services implementing a modulation having M subcarriers of the FBMC-OQAM or OFDM-OQAM type. The method uses linear frequency filtering of a sequence of length N including symbols having L coefficients that are parametrizable according to the communication, L, N, and M being natural numbers, so as to generate N+L&#x2212;1 symbols, reducing out-of-band spurious emissions. The method also uses, no matter what the communication is, a single frequency/time transform (IFFT) having a size M, where N&#x3c;M. For sporadic communications (MTC) in a lower frequency band, the constraints on the out-of-band side-lobes are more stringent on the filter and FBMC modulation is thus better adapted.

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Rennes, France

Hao Lin