A mobile device includes an operation section, a storage section, a communication section which receives a position detection signal, and a processor. The processor detects a current position based on the position detection signal. The processor makes a determination on whether to give an image forming apparatus (a determination target apparatus) a return instruction to return from a power saving mode to an active mode. When it is possible to determine that a distance between the determination target apparatus and the mobile device has decreased by a distance equal to or greater than a reference distance while a moving speed of the mobile device is equal to or greater than a reference speed, the processor determines to issue the return instruction.

A mobile device includes an operation section, a storage section, a communication section which receives a position detection signal, and a processor. The processor detects a current position based on the position detection signal. The processor makes a determination on whether to give an image forming apparatus (a determination target apparatus) a return instruction to return from a power saving mode to an active mode. When it is possible to determine that a distance between the determination target apparatus and the mobile device has decreased by a distance equal to or greater than a reference distance while a moving speed of the mobile device is equal to or greater than a reference speed, the processor determines to issue the return instruction.

A control system of an article according to an embodiment includes a first transmitter having a first radio signal range, being mounted at a first location, and transmitting first position information relating to the first location, a second transmitter having a second radio signal range, being mounted at a second location, and transmitting second position information relating to the second location, the second radio signal range being narrower than the first radio signal range, an acquirer acquiring the first position information and the second position information, and a memory part, information relating to the article is associated with the first position information or the second position information and stored in the memory part.

A control system of an article according to an embodiment includes a first transmitter having a first radio signal range, being mounted at a first location, and transmitting first position information relating to the first location, a second transmitter having a second radio signal range, being mounted at a second location, and transmitting second position information relating to the second location, the second radio signal range being narrower than the first radio signal range, an acquirer acquiring the first position information and the second position information, and a memory part, information relating to the article is associated with the first position information or the second position information and stored in the memory part.

Technologies are generally described for identifying whether a propagation path between a mobile device and an access point is line-of-sight. In some examples, a method performed under control of a mobile device may include receiving, from an access point, a first signal transmitted at a first frequency band; receiving, from the access point, a second signal transmitted at a second frequency band; measuring a difference value between propagation properties of the first signal and the second signal; and identifying whether a propagation path between the mobile device and the access point is line-of-sight or non-line-of-sight based at least in part on the difference value.

Technologies are generally described for identifying whether a propagation path between a mobile device and an access point is line-of-sight. In some examples, a method performed under control of a mobile device may include receiving, from an access point, a first signal transmitted at a first frequency band; receiving, from the access point, a second signal transmitted at a second frequency band; measuring a difference value between propagation properties of the first signal and the second signal; and identifying whether a propagation path between the mobile device and the access point is line-of-sight or non-line-of-sight based at least in part on the difference value.

A system and method for signal backup of active DAS master unit are disclosed. The system includes a state detection unit, a backup processing unit and at least two power distribution units, wherein a backup signal output port and a plurality of backup access ports with a number great than or equal to that of the power distribution units are arranged on the backup processing unit, and a backup signal input port and a plurality of radio frequency access ports with a number great than or equal to that of the power distribution units are arranged on the state detection unit; and each power distribution unit has an input port coupled to one of a plurality of signal sources, and two output ports in which one is coupled to one radio frequency access port and the other is coupled to one backup access port, and the backup signal output port is coupled to the backup signal input port. The backup processing unit is configured to control a signal from the signal source coupled to the radio frequency access port which is in an accessing-abnormal state to access the backup signal input port, when any one of the plurality of radio frequency access ports is in the accessing-abnormal state. It can reduce the hardware cost while guarantee the reliability to improve the cost performance of the backup system.

A system and method for signal backup of active DAS master unit are disclosed. The system includes a state detection unit, a backup processing unit and at least two power distribution units, wherein a backup signal output port and a plurality of backup access ports with a number great than or equal to that of the power distribution units are arranged on the backup processing unit, and a backup signal input port and a plurality of radio frequency access ports with a number great than or equal to that of the power distribution units are arranged on the state detection unit; and each power distribution unit has an input port coupled to one of a plurality of signal sources, and two output ports in which one is coupled to one radio frequency access port and the other is coupled to one backup access port, and the backup signal output port is coupled to the backup signal input port. The backup processing unit is configured to control a signal from the signal source coupled to the radio frequency access port which is in an accessing-abnormal state to access the backup signal input port, when any one of the plurality of radio frequency access ports is in the accessing-abnormal state. It can reduce the hardware cost while guarantee the reliability to improve the cost performance of the backup system.

Method and apparatus for beam information in downlink AoD positioning with UE positioning. The apparatus sends a first request, to at least one base station, for a beam response report based on at least a first location information. The first request includes the first location information with respect to the at least one base station. The apparatus sends a second request, to the at least one base station, for a beam response report based on at least a second location information. The second request includes the second location information with respect to the at least one base station. The apparatus receives, from the at least one base station, one or more beam response reports comprising beam response information of one or more transmission beams of the at least one base station corresponding to at least the first location information and the second location information.

In one embodiment, a wireless tag reading device includes a plurality of antennas for wireless tag communication, a number-of-times acquisition unit, a strength acquisition unit, and a direction specifying unit. Each antenna is arranged along a passage through which a wireless tag passes. The number-of-times acquisition unit acquires a number of times of reading of data of the wireless tag read by each of the antennas for each unit time for each of the antennas. The strength acquisition unit acquires a received signal strength indicator when the data of the wireless tag is read by each of the antennas for each unit time for each of the antennas. The direction specifying unit specifies a moving direction of the wireless tag passing through the passage based on the number of times of reading and the received signal strength indicator for each of the antennas that are acquired for each unit time.