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Improvements to short-range wireless networks

A network and wireless communication technology, applied in network topology, wireless communication, advanced technology, etc., can solve the problem of slow measurement itself

Inactive Publication Date: 2012-02-01
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, there may be a scenario where the measurement itself is very slow (e.g. a large amount of information is collected in a measurement attempt) and it requires many send attempts to send the information piece by piece

Method used

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  • Improvements to short-range wireless networks
  • Improvements to short-range wireless networks
  • Improvements to short-range wireless networks

Examples

Experimental program
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Embodiment Construction

[0083] Before describing embodiments of the invention, some background description will be given on the parts of IEEE 802.15.4 that are expected to be relevant to the design of wireless networks such as piconets, WPANs, and BANs including MBANs And / or could be used as the basis for the IEEE 802.15.6 standard currently under development for wireless networks featuring devices with variable sleep modes.

[0084] figure 1 The general architecture of IEEE 802.15.4 WPAN referenced 100 is shown in terms of the layered OSI model, where the physical medium is accessed via the PHY layer containing the radio transceivers and their low-level control. As shown in the figure, there are figure 2 Two optional frequency bands 101, 102 for the PHY are shown in . The low frequency band 101 provides a single 20 kb / s channel centered at 868.3 MHz and / or 10 channels of 40 kb / s each centered at 915 MHz. The high frequency band 102 provides 16 channels of 250 kb / s each centered on a frequency of...

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PUM

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Abstract

The present invention relates to a wireless sensor network of devices including a sensor and a coordinator. The sensor comprises sensing means operable to detect values of a parameter, transmission and reception means for wireless communication with other devices in the network, and sensor control means operable to control a sleep pattern of the sensor, and the coordinator comprising transmission and reception means for wireless communication with other devices in the network, wherein the sensor transmission means is operable to transmit value information as to the parameter values and the coordinator transmission means is operable to transmit an indication of a suitable sensor sleep pattern taking into account the value information.

Description

technical field [0001] The present invention relates to wireless personal area networks, and particularly, but not necessarily exclusively, to body area networks and wireless sensor networks comprising wirelessly communicating sensors disposed on or around a human or animal body. Background technique [0002] So-called Body Area Networks or BANs are examples of Wireless Personal Area Networks (WPANs) used to transmit information over relatively short distances. Unlike a wireless local area network (WLAN), a connection implemented via a WPAN involves very little or no infrastructure. This feature allows small, power efficient, inexpensive solutions for a wide range of devices. The possibility of a medical BAN (MBAN) using sensors to monitor the status of a patient is of particular interest. A BAN primarily utilized for feeding sensed data to a data sink (possibly also acting as a network coordinator) is an example of a wireless sensor network (WSN); however, it is also poss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W84/18
CPCH04W52/0216H04W84/18H04W52/0219Y02D30/70H04W52/02
Inventor 赛义德·阿贝迪欣德·谢布
Owner FUJITSU LTD