Patent application number | Description | Published |
20120099607 | METHOD AND DEVICES FOR TRANSMITTING AND RECEIVING MULTI-CARRIER SYMBOLS - A method and apparatus are provided for transmitting time/frequency frames. The method includes: framing and mapping data symbols as input to a multi-carrier multiplexer; transforming pilots with multiple-state data modulation known to a receiver of the frames, the pilot modulation state being selected as a function of data that is not known to the receiver and of coding rules that are known to the receiver; and inserting previously-transformed pilots in distributed manner into the mapped frame. | 04-26-2012 |
20120294246 | METHOD FOR ALLOCATING DATA-TRANSMISSION RESOURCES, AND CORRESPONDING SWITCHING METHOD, ACCESS POINT, TERMINAL, COMPUTER PROGRAM AND SIGNAL - A method and apparatus are provided for allocating resources in a communication network including at least one access point exchanging data with at least one terminal connected thereto, and managing at least two communication channels. The method in the access point implements a phase of associating and authenticating a terminal with the access point, including a step of associating a unique identifier with the terminal, and a phase of managing the assembly of channels. The phase of managing includes implementing a reference table associating one of the channels to a terminal identified by the unique identifier thereof, including the following steps: detecting a switching of a terminal connected with the access point, from an initial channel to a destination channel; and updating the reference table to associate the unique identifier of the terminal to the destination channel. | 11-22-2012 |
20130003628 | METHOD FOR DEACTIVATING AT LEAST ONE COMPONENT OF AN ENTITY OF A COMMUNICATIONS NETWORK, CORRESPONDING DEVICE AND COMPUTER PROGRAM - A method and apparatus are provided for deactivating at least one component of an entity of a wireless communication network including a plurality of entities. The communication network is organized into a plurality of communication layers, including a physical layer. The method includes, in the physical layer: a step of receiving a header of a frame of data extracted from a physical signal during reception; a step of decoding the header outputting at least one piece of information showing at least one addressee entity of the frame; a step of deactivating at least one component of the recipient entity of the header when the information representing the addressee entity designates an entity other than the recipient entity. | 01-03-2013 |
20130051242 | METHOD OF TRANSMITTING AND RECEIVING A MULTI-CARRIER SIGNAL, AND A TRANSMITTER, A RECEIVER, A SIGNAL, AND A COMPUTER PROGRAM CORRESPONDING THERETO - A method of transmitting a multi-carrier signal by a transmitter using at least two transmit antennas to at least one receiver using at least one receive antenna, the method comprising an obtaining step of obtaining at least one estimate of at least one transmission downlink channel. According to the invention, such a method comprises a transmission stage performing at least one iteration of the following steps, for at least one downlink channel: transmitting payload data over said downlink channel, while taking account of said downlink channel estimate; and updating said downlink channel estimate, while taking account of acknowledgment information acknowledging reception of said payload data and transmitted by the receiver associated with said downlink channel. | 02-28-2013 |
20130064194 | METHODS FOR TRANSMITTING AND RECEIVING DATA USING A PLURALITY OF RADIO CHANNELS, TRANSMISSION AND DESTINATION DEVICES, CORRESPONDING SIGNAL AND COMPUTER PROGRAM - A method and apparatus are provided for transmitting data packets in a communication network using a plurality of radio channels. The network is organized into a plurality of communication layers including a data link layer MAC and a physical layer PHY. The method includes aggregating data packets to be transmitted to a single recipient, in the MAC layer, outputting at least two aggregated packets, with which a single header of the PHY layer is associated. At least two of the radio channels are concatenated to form a concatenated channel. The aggregated packets are simultaneously transmitted respectively over at least two separate concatenated sub-channels, one concatenated sub-channel including at least one of the radio channels of the concatenated channel. | 03-14-2013 |
20130070697 | Method and Device for Transmitting, Method for Receiving and Destination Device, Corresponding Multicarrier Signal and Computer Program. - A method for transmitting data packets in a communication network using a plurality of radio frequency channels, at least two of the radio frequency channels being concatenated to form a concatenated channel. The method includes: acquiring and reserving at least one of the channels from the concatenated channel, thus reserving a first frequency band for transmitting data packets to a first target device; acquiring and reserving channels from the concatenated channel that were unreserved during the first step of acquisition and reservation, thus reserving a second frequency band for transmitting data packets to a second target device; generating a preamble specific to a selected data packet, which includes a simultaneous transmission indicator on the first and second frequency bands; and simultaneously transmitting the data packets on the first and second frequency bands, from the selected packet and the specific preamble, before the selected packet on the second frequency band. | 03-21-2013 |
20130177092 | METHODS OF TRANSMITTING AND RECEIVING A MULTICARRIER SIGNAL, AND CORRESPONDING TRANSMITTER, RECEIVER, RETURN SIGNAL, AND COMPUTER PROGRAMS - The invention relates to a method of receiving a signal corresponding to a multicarrier signal transmitted via at least one transmission channel, the method comprising an estimation step ( | 07-11-2013 |
20140003265 | DATA RECEPTION DEVICE AND CORRESPONDING RECEPTION METHOD, COMPUTER PROGRAM AND RECORDING MEDIUM | 01-02-2014 |
20140211686 | A CHANNEL SELECTION METHOD, AND CORRESPONDING WIFI DEVICE AND COMPUTER PROGRAM - A method is provided for selecting a channel for a multiband WiFi access network with channel sharing between access points of the WiFi network. A first band is said to be a “transmission” band and a second band is said to be a “signaling” band, which has radio coverage that is greater than that of the transmission band. The method includes transmitting first pertinent information in the signaling band, the first pertinent information relating to occupancy of the transmission band by the access point; and receiving second pertinent information in the signaling band, the second pertinent information relating to occupancy of the transmission band by neighboring access points, these steps taking place simultaneously with any step of transmission in the transmission band. | 07-31-2014 |
20140247777 | METHOD OF TRANSMITTING DATA PACKETS, AND CORRESPONDING STATIONS AND COMPUTER PROGRAM - A method and device are provided for transmitting data packets to an access network with sharing of a multiband channel among stations. A first band is referred to as a “transmission” band, and a second band is referred to as a “signaling” band. A station accesses the channel for transmitting data of a stream after using a counter to decrement a backoff value. The method includes: receiving backoff counts sent successively over the signaling channel by the various stations relating to their various streams; comparing the backoff counts with one another in order to detect identical values; and in the event of there being identical values between a plurality of stations, determining at least one new backoff count value that is different from all the others. | 09-04-2014 |
20140314035 | METHOD OF TRANSMITTING FRAMES, AND CORRESPONDING STATIONS AND COMPUTER PROGRAM - A frame transmission method is provided for use in a multiuser MIMO system having a transmitter with a plurality of antennas and receivers that are respectively associated with users. The method includes: constructing a sounding frame in which a first portion has at least one symbol for synchronizing destination receivers and a second portion has at least as many pre-coded pilot symbols as there are destination receivers; transmitting the sounding frame in a broadcast mode for its first portion and in a directional mode for its second portion to each of the destination receivers; and constructing a respective data frame for sending to each of the destination receivers by taking account of feedback information coming from the destination receivers and, for each destination receiver, coding interference between destination receivers. | 10-23-2014 |
20140334505 | Transmission of Acknowledgment of Short Duration - A method is provided for sending an acknowledgement frame by a receiving entity. The method includes: subsequent to reception of a data frame sent by a sending entity and including a synchronization field containing an invariant item of information known to the entities and an identification field containing information identifying the sending entity and the receiving entity, sending an acknowledgment frame including a synchronization field; and calculating a signature of a transmission channel between the sending entity and the receiving entity, the synchronization field of the acknowledgment frame being obtained on the basis of the synchronization field of the data frame, by using the signature. | 11-13-2014 |