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Short-distance wireless communication system and method

A wireless communication system and wireless communication technology, applied in the field of short-distance wireless communication systems, can solve problems that have never been raised before

Inactive Publication Date: 2012-07-18
NAT INST OF INFORMATION & COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Near-field wireless communication systems are generally wireless communication (Bluetooth, IrDA, IrSimple, Irss, NFC, Piconet, UWB, Wibree, Wireless USB, Zigbee) assuming a distance of less than 100 meters. However, such a method has never been proposed: no It is necessary to generate a serial number in the sensor, and even if the timer accuracy of each sensor constituting the BAN is different, it can minimize the chance of data waiting on the sensor side and reduce the power consumption of the sensor side

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  • Short-distance wireless communication system and method
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  • Short-distance wireless communication system and method

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Embodiment Construction

[0033] Next, as a specific embodiment of the present invention, a short-range wireless communication system that transmits and receives wireless signals between a plurality of sensors and at least one coordinator will be described with reference to the drawings.

[0034] The short-range wireless communication system 1 to which the present invention is applied is a system applied as a so-called body area network (BAN), and is composed of a sensor group 20 and at least one coordinator 3, wherein the sensor group 20 is composed of, for example, figure 1 A collection of sensors 2 worn or buried (implanted) in the human body is shown, and the coordinator 3 sends and receives wireless signals based on the wireless communication links established between the sensors 2 constituting the sensor group 20 . Information on the inside and outside of the body detected by each sensor 2 is sent to the coordinator 3 through wireless communication. The coordinator 3 communicates the in vivo and ...

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Abstract

In particular, even if sensors have their respective different timer precisions, the number of occasions when the sensors wait for data can be minimized, thereby reducing the output consumptions on the sensor sides. A coordinator (3) allocates, based on information previously received from sensors (2), the sensors to respective slots, which constitute a super-frame, in a time sequence order and then notifies, to the sensors (2), the respective slots to which the sensors are allocated. When each of the sensors (2) transmits data to the coordinator (3), the sensor makes a synchronization request at the timing of the notified slot without receiving any beacons from the coordinator.

Description

technical field [0001] The present invention relates to a short-distance wireless communication system for transmitting and receiving wireless signals between a plurality of sensors and a coordinator, in particular to a short-distance wireless communication system for treating and diagnosing the human body by wearing small sensors on the human body. Background technique [0002] In recent years, medical treatment and diagnosis of the human body by wearing electronic devices (sensors) on the human body have been increasing. Therefore, the research on body area network (BAN: body area network) system is also attracting attention, wherein the body area network system establishes a wireless communication link between the sensor worn on the human body and the coordinator to perform wireless communication. Among them, in order to obtain patient's examination data in real time, BAN system construction focusing on high-speed communication, ease of use, and reliability is also being ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04W72/04H04W84/18
CPCH04W74/06H04W74/0891H04W56/00H04W84/18H04J3/0652
Inventor 黑田正博
Owner NAT INST OF INFORMATION & COMM TECH