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Device roaming on a zigbee network

a device and network technology, applied in the field of zigbee protocols, can solve the problems of various limitations of zigbee known in the prior art, and the end devices are generally limited to use with a single network, so as to enable device roaming and enhance the functionality of the end devi

Inactive Publication Date: 2009-04-09
AMX LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention aims to enhance the functionality of Zigbee devices by enabling them to roam between networks. This is achieved by determining available Zigbee networks, selecting one, and joining the device to it. The technical effect is improved connectivity and flexibility for Zigbee devices, allowing them to access a wider range of networks and utilize their full capabilities."

Problems solved by technology

However, a node ID is not guaranteed to be unique within a Zigbee network, which may result in conflicts associated with addressing devices within the Zigbee network.
There currently exists various limitations associated with Zigbee that are known in the prior art.
One such limitation is that the end devices are generally limited to use with a single network.

Method used

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  • Device roaming on a zigbee network
  • Device roaming on a zigbee network
  • Device roaming on a zigbee network

Examples

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Embodiment Construction

[0025]Referring now to the drawings, wherein like reference numerals designate identical or corresponding parts throughout the several views, preferred embodiments of the present invention are described.

[0026]Referring now to FIG. 10, a block diagram illustrating a Zigbee gateway in accordance with an embodiment of the present invention is shown. The gateway 100 may include, without limitation, a main processor 102 having one or more memory devices 104 and / or 106, a serial port connected to an external processor 108, a serial port debug header 110, and an Ethernet connection 112.

[0027]In one possible implementation, the main processor 102 is an AMCC PPC405EP 32-bit PowerPC processor. The 405EP includes an integrated 32-bit wide SDRAM controller, a 32-bit wide PCI bus, 16-bit wide peripheral bus, two 10 / 100 Ethernet MACs, 32 general purpose I / Os (GPIOs), two serial ports, and an 12C port. The 405EP is clocked using a 33 MHz SYS_CLOCK. The PPC runs at 133 MHz with a 66 MHz SDRAM bus s...

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Abstract

An end device in a Zigbee network space is configured to roam between available Zigbee networks. When the end device determines that a quality of a current connection has fallen below a minimum threshold, the end device evaluates the network space for available networks. The end device stores a list of Zigbee networks that it is authorized to join and joins the most preferred Zigbee network, as determined by, for example, a signal strength or a stored network ranking.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present patent application is related to and claims the benefit of provisional patent application No. 60 / 618,392, filed 14 Mar. 2007, titled Method and System for Zigbee and Ethernet Gateways, the entire contents of which are incorporated by reference herein.FIELD OF THE INVENTION[0002]The present invention relates in general to the field of Zigbee protocols, and, more particularly, the present invention is related to a system, method and computer readable medium for providing enhanced Zigbee related functionality.BACKGROUND OF THE INVENTION[0003]Zigbee is a suite of protocols, based on the EEE 802.15.4 standard, designed for a low-data-rate, low-power wireless personal area network (“WPAN”). While Zigbee has a lower data transfer rate than that in other wireless LAN or Bluetooth technologies, it has an advantage such that the power consumption is considerably lower. Zigbee may be used to radio-control everything from light illuminati...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F15/177H04W4/80
CPCH04L47/625H04W28/06H04W88/16Y02B60/50H04W4/008H04L12/66H04W28/10H04W84/18H04W92/02H04W76/02H04W76/10H04W4/80Y02D30/70H04L1/08H04L1/12
Inventor SMITH, DARIN WILLIAM
Owner AMX LLC
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