Invention Grant
US07940675B2 Method of communication between reduced functionality devices in an IEEE 802.15.4 network
有权
IEEE 802.15.4网络中缩减功能设备之间的通信方法
- Patent Title: Method of communication between reduced functionality devices in an IEEE 802.15.4 network
- Patent Title (中): IEEE 802.15.4网络中缩减功能设备之间的通信方法
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Application No.: US12333918Application Date: 2008-12-12
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Publication No.: US07940675B2Publication Date: 2011-05-10
- Inventor: Geoff Mulligan , Gregory A. Ehlers
- Applicant: Geoff Mulligan , Gregory A. Ehlers
- Applicant Address: US DE Wilmington
- Assignee: Ranco Incorporated of Delaware
- Current Assignee: Ranco Incorporated of Delaware
- Current Assignee Address: US DE Wilmington
- Agency: Howard & Howard Attorneys PLLC
- Main IPC: H04L1/00
- IPC: H04L1/00
Abstract:
In a 802.15.4 network, each reduced functionality device (RFD) is permitted to communicate with only an assigned full function device (FFD). The present invention allows each of the RFDs to communicate with another RFD upon the RFD determining that the local FFD assigned to the RFD is inoperable or unable to communicate. Under emergency conditions, the RFD is able to communicate with a closely located RFDs such that the closely located RFDs can receive and respond to an emergency situation and/or repeat the message. To satisfy the 802.15.4 standards, communication between the RFDs is allowed only during emergency conditions and when the FFD is inoperative. A comprehensive test procedure is included to insure the integrity of the system is preserved at all times.
Public/Granted literature
- US20100188988A1 METHOD OF COMMUNICATION BETWEEN REDUCED FUNCTIONALITY DEVICES IN AN IEEE 802.15.4 NETWORK Public/Granted day:2010-07-29
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