Abstract: Provided is a wireless communication system that includes a transmission device configured to receive an input of group-addressed data transmitted from a specific source, convert the group-addressed data into wireless frames, and perform group-addressed transmission of the wireless frames; and a reception device configured to receive the wireless frames transmitted from the transmission device, and identify and acquire the group-addressed data of the specific source. The transmission device includes coding means for defining a plurality of wireless frames as a frame block, performing error correction coding on the frame block, and performing group-addressed transmission of the frame block, and the reception device includes decoding means for identifying the frame block from the received wireless frames, performing error correction decoding in units of frame block, and reconfiguring the group-addressed data of the specific source.

Abstract: A wireless communication management apparatus (100) includes a correction unit (1131), an evaluation unit (1132), and a determination unit (1133). The correction unit (1131) corrects, on the basis of a characteristic of each terminal, an error rate in wireless communication between a base station and the terminal based on wireless environment information collected from one or more terminals configured to wirelessly communicate with the base station. The evaluation unit (1132) evaluates the corrected error rate. The determination unit (1133) determines a modulation/demodulation scheme for each terminal on the basis of the evaluation result of the evaluation unit.

Abstract: A predetermined STA includes a station information collection unit collecting from the STA itself and other STAs station information used for selection of STAs performing simultaneous transmission and for control of the simultaneous transmission, and a simultaneous-transmission request unit knowing occurrence of a QoS data frame based on the station information and transmitting a request frame requesting the simultaneous transmission to an AP. The AP includes a station information collection unit; a simultaneous-transmission determination unit selecting a combination of the STAs performing the simultaneous transmission based on the station information by reception of the request frame; and a trigger transmission unit transmitting to each of the STAs performing the simultaneous transmission a trigger frame instructing to performs the simultaneous transmission and including information necessary for controlling the simultaneous transmission.

Abstract: A format that includes a BSSID of a transmitting station within a preamble of the frame is an HE format, and a format that does not include a BSSID within the preamble but includes a BSSID in a MAC header is a Non-HE format; and a wireless station in the BSS includes a control part which checks a format of a frame received at a predetermined receiver sensitivity or above, and continues demodulation of the received frame if the format is HE format and the BSSID in the received frame is consistent with its own BSS, and stops the demodulation of the received frame if the HE format and the BSSID in the received frame is not consistent with its own BSS.

Abstract: A wireless communication characteristics evaluation method for evaluating wireless communication characteristics of a wireless communication system where a plurality of wireless communication terminals perform communication by transmitting or exchanging signals, the wireless communication characteristics evaluation method including: a step 1 of acquiring power and a band of an interference signal; a step 2 of calculating an interference band rate showing a rate of the band of the interference signal that overlaps with a band of a desired signal; a step 3 of calculating an interference power rate from interference power and the interference band rate and furthermore, calculating steady noise power from the interference power and the interference power rate; a step 4 of determining a real SINR from received power of the desired signal and the steady noise power; and a step 5 of determining wireless communication characteristics of the desired signal from the real SINR.

Abstract: A wireless communication management apparatus (100) includes a remaining capacity prediction unit (122) and a time setting unit (123). The remaining capacity prediction unit (122) predicts a remaining capacity (BLafter) of a battery (305) at a time point after a predetermined period has passed in a wireless communication device (300) on which the battery (305) is mounted. The time setting unit (123) sets a condition that the remaining capacity (BLafter) of the battery (305) predicted by the remaining capacity prediction unit (122) is greater than an allowable remaining capacity (BLminreq) and each of an operating time (Ton) and a transmittable time (Ttx) of the wireless communication device (300) falls within the reference range, and sets the operating time (Ton) and the transmittable time (Ttx) of the wireless communication device (300) in a state where the condition is satisfied.

Abstract: A positive terminal 20 for a dry battery of a battery box 1a includes an electrode portion 22 adapted to make contact with the anode of a battery, a soldering portion 13 soldered to the substrate 6, and a lead portion 21 integrally provided between the electrode portion 22 and the soldering portion 13. Further, a load absorbing means is provided in the lead portion 21 to prevent a force exerted in the longitudinal direction of the battery from being applied directly to the soldering portion 13. The lead portion 21 includes an extending part 21a which extends in the longitudinal direction of the battery and is continuous with the electrode portion 22, and a loop part 21b bent in a substantially ring shape and positioned within a plane roughly perpendicular to the longitudinal direction of the battery, wherein the loop part 21b forms the load absorbing means.

Abstract: A floating connector includes a connector 2 having a base side, a flange-like connecting portion 3 provided on the base side of the connector 2, a base 4 for supporting the connecting portion 3, and a pair of coil springs 5 provided between the connecting portion 3 and the base 4 for supporting the connector in a floating state. The coil springs 5 are supported by coil spring receiving portions 31 provided in the connecting portion 3 and coil spring supporting bosses 41 provided on the base 4 so that the coil springs 5 can extend and contract in an inserting direction of a mating connector to be connected as well as to bend laterally in swing directions of the connector 2.

Abstract: A floating connector includes a connector 2 having a base side, a flange-like connecting portion 3 provided on the base side of the connector 2, a base 4 for supporting the connecting portion 3, and a pair of coil springs 5 provided between the connecting portion 3 and the base 4 for supporting the connector in a floating state. The coil springs 5 are supported by coil spring receiving portions 31 provided in the connecting portion 3 and coil spring supporting bosses 41 provided on the base 4 so that the coil springs 5 can extend and contract in an inserting direction of a mating connector to be connected as well as to bend laterally in swing directions of the connector 2.

Abstract: A connector includes a connector main body 1 having a metallic electrical connecting portion 2, an inner molded portion 10a provided outside the connector main body and having a pair of protrusions 12 which are integrally formed on the opposite surfaces of the inner molded portion 10a, and an outer molded portion 20a provided outside the inner molded portion so that the protrusions 12 are partially exposed on the outer surface of the outer molded portion 20a. The pair of protrusions 12 protrude toward a pair of metal molds for molding the outer molding portion, respectively.

Abstract: A connector includes a connector main body 1 having a metallic electrical connecting portion 2, an inner molded portion 10a provided outside the connector main body and having a pair of protrusions 12 which are integrally formed on the opposite surfaces of the inner molded portion 10a, and an outer molded portion 20a provided outside the inner molded portion so that the protrusions 12 are partially exposed on the outer surface of the outer molded portion 20a. The pair of protrusions 12 protrude toward a pair of metal molds for molding the outer molding portion, respectively.

Abstract: A positive terminal 20 for a dry battery of a battery box 1a includes an electrode portion 22 adapted to make contact with the anode of a battery, a soldering portion 13 soldered to the substrate 6, and a lead portion 21 integrally provided between the electrode portion 22 and the soldering portion 13. Further, a load absorbing means is provided in the lead portion 21 to prevent a force exerted in the longitudinal direction of the battery from being applied directly to the soldering portion 13. The lead portion 21 includes an extending part 21a which extends in the longitudinal direction of the battery and is continuous with the electrode portion 22, and a loop part 21b bent in a substantially ring shape and positioned within a plane roughly perpendicular to the longitudinal direction of the battery, wherein the loop part 21b forms the load absorbing means.