Abstract: A remote operation device that remotely operates a mobile object by communication includes processing circuitry configured to acquire information on non-prime remote operation devices that are allowed to remotely operate the mobile object by the communication; detect a communication delay time in the communication with the mobile object; determine whether or not the detected communication delay time exceeds a delay time determination threshold; determine, when it is determined that the communication delay time exceeds the delay time determination threshold, a switching destination remote operation device from among the non-prime remote operation devices depending on whether or not a switching determination condition is satisfied on a basis of the acquired information on the non-prime remote operation devices; and output switching instruction information for remotely operating the mobile object to the determined switching destination remote operation device.

Abstract: A control unit (22) controls a filter (30) of a communication device (3a) by wired communication via a LCX (4a) to pass or cut off a signal in a wireless frequency band, to cause the LCX (4a) and LCX (4b) to function as a single antenna or a plurality of antennas.

Abstract: A control unit (22) controls a filter (30) of a communication device (3a) by wired communication via a LCX (4a) to pass or cut off a signal in a wireless frequency band, to cause the LCX (4a) and LCX (4b) to function as a single antenna or a plurality of antennas.

Abstract: The wireless communication device includes: a wireless communication unit issuing a request to increase or decrease transmission power to another device in such a way that a received signal strength of a radio wave transmitted from another device falls within a predetermined range, and performing a transmission power control of a wireless communication device in response to a request to increase or decrease transmission power from another device. Further, the wireless communication device includes: a control unit performing a control of decreasing the received signal strength of each of the wireless communication device and another device, when a communication state satisfies a condition for increasing the transmission power, to cause the wireless communication unit of the wireless communication device to issue the request to increase the transmission power to another device, and also cause another device to issue the request to increase the transmission power to the wireless communication device.

Abstract: The wireless communication device includes: a wireless communication unit issuing a request to increase or decrease transmission power to another device in such a way that a received signal strength of a radio wave transmitted from another device falls within a predetermined range, and performing a transmission power control of a wireless communication device in response to a request to increase or decrease transmission power from another device. Further, the wireless communication device includes: a control unit performing a control of decreasing the received signal strength of each of the wireless communication device and another device, when a communication state satisfies a condition for increasing the transmission power, to cause the wireless communication unit of the wireless communication device to issue the request to increase the transmission power to another device, and also cause another device to issue the request to increase the transmission power to the wireless communication device.

Abstract: A shield box unit installed inside a vehicle and storing a mobile wireless terminal blocks external radio waves.

Abstract: When a wireless communication device is performing wireless communications of real time data by using a wireless LAN method, and the degree of influence of paging a communications partner in an automatic connection operation for a Bluetooth method upon the wireless communications using the wireless LAN method is higher than a permissible upper limit, the wireless communication device changes the paging operation in such a that the degree of influence is reduced.

Abstract: A wireless communication device 1 carries out wireless communications using different wireless communication schemes through antennas independent of each other. When it decides that a party on the other end is a wireless communication device using a single antenna system, it switches to a simultaneous operation that carries out wireless LAN and Bluetooth wireless communication in parallel, and when it does not decide that the party on the other end is a wireless communication device using a single antenna system, it switches to a time-division operation that carries out the wireless LAN and Bluetooth wireless communication in time division.

Abstract: When a wireless communication device is performing wireless communications of real time data by using a wireless LAN method, and the degree of influence of paging a communications partner in an automatic connection operation for a Bluetooth method upon the wireless communications using the wireless LAN method is higher than a permissible upper limit, the wireless communication device changes the paging operation in such a that the degree of influence is reduced.

Abstract: An electronic key system includes a lock-side terminal that is mounted in a locked object and capable of at least locking and unlocking the locked object, and a portable terminal capable of sending and receiving the electronic key to and from the lock-side terminal mounted in the locked object and the other portable terminals, and when receiving a request from the one portable terminal, the lock-side terminal generates the electronic key at random, and sends the randomly generated electronic key to the one portable terminal.

Abstract: A wireless communication system includes APs 1 and 2 that perform communications using different frequency channels, and slave units 3 to 5 that connect with either one of the APs 1 and 2 to perform wireless communications. When detecting a radar wave which is a wireless signal of another wireless system, and stopping the communications which have been performed till then via a frequency channel, the AP1 commands the slave units 3 to 5 that have been performing wireless communications by using this frequency channel to switch their connection destinations to the AP 2 that performs communications using a different frequency channel, and the slave units 3 to 5 switch their connection destinations to the AP 2 according to the command from the AP 1.

Abstract: A wireless communication device 1 carries out wireless communications using different wireless communication schemes through antennas independent of each other. When it decides that a party on the other end is a wireless communication device using a single antenna system, it switches to a simultaneous operation that carries out wireless LAN and Bluetooth wireless communication in parallel, and when it does not decide that the party on the other end is a wireless communication device using a single antenna system, it switches to a time-division operation that carries out the wireless LAN and Bluetooth wireless communication in time division.

Abstract: A wireless communication device includes first wireless communication unit 2 for performing wireless communication with information terminal 21 through wireless LAN, and for obtaining frequency channel of interference wave by detecting interference wave due to wireless communication through wireless LAN between information terminal 24 and portable information terminal 25; second wireless communication unit 3, third wireless communication unit 4, . . . , nth wireless communication unit 5 for performing wireless communication with mobile terminal 22 or wireless headphone 23 by Bluetooth or wireless audio; channel aggregation unit 10 for setting the frequency channel of first wireless communication unit 2 at the same frequency channel as the frequency channel of interference wave the first wireless communication unit 2 obtains; and assignment control unit 9 for allocating frequency channels of the second, third, . . .

Abstract: A wireless communication apparatus includes: attenuators provided in wireless devices for attenuating an input level of a reception signal; a monitoring unit for monitoring communication states of the wireless devices; and a control unit that performs control to determine whether or not the input level of the reception signal of the wireless device to be controlled out of the wireless devices will be excessive because of a wireless communication to be performed by the second wireless device other than the wireless device to be controlled, based on the communication states of the wireless devices monitored by the monitoring unit and to attenuate the input level of the reception signal by operating the attenuator of the wireless device when determination is made that the input level of the reception signal will be excessive.

Abstract: A wireless communication device comprises: a detector configured to detect an interference wave and a frequency of the interference wave, the interference wave causing radio interference in the wireless communication; an interference avoidance controller configured to predict duration where the wireless communication is affected by radio interference due to the interference wave, and configured to issue a command for avoiding the radio interference due to the interference wave when the predicted duration exceeds a threshold time period; and a frequency controller configured to control frequencies used in the wireless communication to exclude the frequency of the interference wave in accordance with the command for avoiding the radio interference issued by the interference avoidance controller.

Abstract: A wireless communication system includes APs 1 and 2 that perform communications using different frequency channels, and slave units 3 to 5 that connect with either one of the APs 1 and 2 to perform wireless communications. When detecting a radar wave which is a wireless signal of another wireless system, and stopping the communications which have been performed till then via a frequency channel, the AP1 commands the slave units 3 to 5 that have been performing wireless communications by using this frequency channel to switch their connection destinations to the AP 2 that performs communications using a different frequency channel, and the slave units 3 to 5 switch their connection destinations to the AP 2 according to the command from the AP 1.

Abstract: A wireless communication apparatus includes: attenuators provided in wireless devices for attenuating an input level of a reception signal; a monitoring unit for monitoring communication states of the wireless devices; and a control unit that performs control to determine whether or not the input level of the reception signal of the wireless device to be controlled out of the wireless devices will be excessive because of a wireless communication to be performed by the second wireless device other than the wireless device to be controlled, based on the communication states of the wireless devices monitored by the monitoring unit and to attenuate the input level of the reception signal by operating the attenuator of the wireless device when determination is made that the input level of the reception signal will be excessive.

Abstract: An electronic key system includes a lock-side terminal that is mounted in a locked object and capable of at least locking and unlocking the locked object, and a portable terminal capable of sending and receiving the electronic key to and from the lock-side terminal mounted in the locked object and the other portable terminals, and when receiving a request from the one portable terminal, the lock-side terminal generates the electronic key at random, and sends the randomly generated electronic key to the one portable terminal.

Abstract: In UWB communication based on an MB-OFDM communication scheme, when a jamming interference is detected within a receiving frequency band, the frequency of a local signal LO is altered to a frequency that will cause the jamming to be converted to a frequency outside the pass band of an LPF.

Abstract: A wireless communication device comprises: a detector configured to detect an interference wave and a frequency of the interference wave, the interference wave causing radio interference in the wireless communication; an interference avoidance controller configured to predict duration where the wireless communication is affected by radio interference due to the interference wave, and configured to issue a command for avoiding the radio interference due to the interference wave when the predicted duration exceeds a threshold time period; and a frequency controller configured to control frequencies used in the wireless communication to exclude the frequency of the interference wave in accordance with the command for avoiding the radio interference issued by the interference avoidance controller.