An electronic device comprising: circuitry configured to - set an identifier for identifying a network to which the electronic device belongs in the SIGNAL field of the IEEE 802.11 standard; - select a Physical Layer Convergence Protocol, PLCP, header format of a first PLCP header from a plurality of PLCP header formats, wherein the first PLCP header includes the SIGNAL field of the IEEE 802.11 standard; - transmit a first packet including the first PLCP header to another electronic device which belongs to the network at a first transmission power; - set a detection threshold based on the first transmission power; - receive a second PLCP header of a second packet from the other electronic device and enter carrier sense busy state; - determine whether the second packet is from the network to which the electronic device belongs or from another network based on an identifier in the second packet; - in response to the second packet determined to be from the network to which the electronic device belongs, detect the rest of the second packet; and - in response to the second packet determined to be from the other network, if a detected strength of the second packet is lower than the detection threshold, then cancel reception and enter carrier sense idle state and if the detected strength of the second packet is the same or greater than the detection threshold, then cancel reception and enter carrier sense busy state. circuitry configured to - set an identifier for identifying a network to which the electronic device belongs in the SIGNAL field of the IEEE 802.11 standard; - select a Physical Layer Convergence Protocol, PLCP, header format of a first PLCP header from a plurality of PLCP header formats, wherein the first PLCP header includes the SIGNAL field of the IEEE 802.11 standard; - transmit a first packet including the first PLCP header to another electronic device which belongs to the network at a first transmission power; - set a detection threshold based on the first transmission power; - receive a second PLCP header of a second packet from the other electronic device and enter carrier sense busy state; - determine whether the second packet is from the network to which the electronic device belongs or from another network based on an identifier in the second packet; - in response to the second packet determined to be from the network to which the electronic device belongs, detect the rest of the second packet; and - in response to the second packet determined to be from the other network, if a detected strength of the second packet is lower than the detection threshold, then cancel reception and enter carrier sense idle state and if the detected strength of the second packet is the same or greater than the detection threshold, then cancel reception and enter carrier sense busy state. - set an identifier for identifying a network to which the electronic device belongs in the SIGNAL field of the IEEE 802.11 standard; - select a Physical Layer Convergence Protocol, PLCP, header format of a first PLCP header from a plurality of PLCP header formats, wherein the first PLCP header includes the SIGNAL field of the IEEE 802.11 standard; - transmit a first packet including the first PLCP header to another electronic device which belongs to the network at a first transmission power; - set a detection threshold based on the first transmission power; - receive a second PLCP header of a second packet from the other electronic device and enter carrier sense busy state; - determine whether the second packet is from the network to which the electronic device belongs or from another network based on an identifier in the second packet; - in response to the second packet determined to be from the network to which the electronic device belongs, detect the rest of the second packet; and - in response to the second packet determined to be from the other network, if a detected strength of the second packet is lower than the detection threshold, then cancel reception and enter carrier sense idle state and if the detected strength of the second packet is the same or greater than the detection threshold, then cancel reception and enter carrier sense busy state. if a detected strength of the second packet is lower than the detection threshold, then cancel reception and enter carrier sense idle state and if the detected strength of the second packet is the same or greater than the detection threshold, then cancel reception and enter carrier sense busy state.