![]() ![]() A short-distance wireless communication method of implementing transmission and reception of a radio signal between a plurality of sensors and a coordinator, the coordinator time-sequentially allocating the sensors to respective slots constituting a super frame based on information received beforehand from each of the sensors, and notifying the sensors of the allocated slots, the sensors making a synchronization request at timings of the notified slots without receiving a beacon from the coordinator when transmitting data to the coordinator.ĩ. A sensor to be used in the short-distance wireless communication system according to claim 1.Ĩ. The short-distance wireless communication system according to claim 1, wherein the sensors are wearable sensors wearable on a human body.ħ. The short-distance wireless communication system according to claim 2, wherein the sensor corrects the RTC of the sensor based on a linear function having a proportionality constant α which is a difference value between the RTC of the sensor and the RTC of the coordinator.Ħ. ![]() The short-distance wireless communication system according to claim 2, wherein the coordinator determines a resynchronization timing based on a linear function having a proportionality constant α a which is a difference value between the RTC of the coordinator and the RTC of the sensor.ĥ. The short-distance wireless communication system according to claim 2, wherein the coordinator receives incremental data sequentially generated based on the RTC of the sensor for each super frame, and calculates the reset number based on an incremental number until the incremental data departs from the slot allocated to the sensor.Ĥ. The short-distance wireless communication system according to claim 1, wherein the coordinator calculates a reset number based on a difference between a real time clock (RTC) of the coordinator and an RTC of each of the sensors, and further transmits the calculated reset number to the sensor, and the sensor increases the RTC of the sensor until the reset number received from the coordinator, and then makes a resynchronization request to the coordinator.ģ. A short-distance wireless communication system that implements transmission and reception of a radio signal between a plurality of sensors and an at least one coordinator, the coordinator time-sequentially allocating the sensors to respective slots constituting a super frame based on information received beforehand from each of the sensors, and notifying the sensors of the allocated slots, the sensors making a synchronization request at timings of the notified slots without receiving a beacon from the coordinator when transmitting data to the coordinator.Ģ. WIRELESS SYSTEM HAVING HIGH SPECTRAL PURITYġ. METHOD AND NOTIFYING UNIT FOR PROVIDING A NOTIFICATION ABOUT AN EVENT Systems and Methods to Record and Present a Trip MULTI-MODE COMMUNICATION APPARATUS FOR SELECTIVELY USING W-CDMA SYSTEM AND GSM SYSTEM SYSTEM AND METHOD FOR PREDICTING FUTURE LOCATIONS OF MOBILE COMMUNICATION DEVICES USING CONNECTION-RELATED DATA OF A MOBILE ACCESS NETWORKĪpparatus and method for providing information regarding the presence or location of members of a social network VALID ACCESS TO MOBILE DEVICE APPLICATION ![]() Portable terminal and announcement method Application and a method for two-way communication between participating smartphones, of each other's real-time geographic location information, during a phone call.ĮMERGENCY CALL APPARATUS OF MOBILE TERMINAL AND METHOD THEREOF
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