Abstract: 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.

Abstract: A method for managing a wireless access point. The method includes: broadcasting, to a station or stations present in a coverage area of the access point, a downlink frame, the downlink frame carrying an indicator requiring the transmission, by a station receiving the downlink frame, of a received power level of the access point; receiving at least one uplink frame from at least one of the stations, in response to the downlink frame, an uplink frame transmitted by a station carrying information representative of the power level of the access point received by the station; and determining at least one power level of the access point received by at least one of the stations, based on the information representative of the power level carried by the uplink frame or frames.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.