IEEE 802.15.4 Protocol Adaptations for Visible Light Communication Addressing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing IEEE 802.15.4 standard is inadequate for visible light communications, particularly in applications requiring flexible addressing modes such as broadcast and multicast, as it lacks a coordinating device and inefficient addressing modes for shouter devices and anonymous transmissions.
Innovation Solution
Adaptations to the IEEE 802.15.4 standard protocol include new address formats and bit interpretations to enable more efficient addressing in visible light communications, allowing for anonymous transmission and indiscriminate broadcasts by modifying the frame control field, thereby accommodating VAN-specific requirements while maintaining backwards compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the existing IEEE 802.15.4 standard addressing modes are used, then device compatibility is maintained, but addressing efficiency is insufficient for visible light communications applications
Solution Approach 1:
The patent introduces dynamic addressing modes that can be selected based on application requirements. The frame control field includes address mode indicators that allow the system to switch between different addressing schemes (broadcast, multicast, unicast, anonymous) depending on the communication needs, making the addressing system adaptable rather than static
Solution Approach 2:
The patent modifies the frame control field parameters to include new address mode indicators. By changing the interpretation of existing bits and adding new parameter combinations, the system enables multiple addressing modes without requiring a complete protocol redesign, thus improving addressing efficiency while maintaining compatibility
2Quantity of substance
If source and destination addresses are always transmitted, then message routing is enabled, but message transmission overhead is reduced
Solution Approach 1:
The patent extracts and transmits only the necessary addressing information based on the communication scenario. For broadcast messages, only a broadcast address is transmitted without source address. For anonymous transmissions, only destination address is included. This selective extraction of address information reduces overhead while maintaining essential routing capabilities
Solution Approach 2:
The patent implements partial addressing by transmitting only the minimum required address information for each message type. Instead of always transmitting both source and destination addresses, the system transmits only what is necessary for the specific application, reducing overall transmission overhead while maintaining sufficient routing capability
3Quantity of substance
If PAN identifier is transmitted in every message, then network identification is enabled, but message overhead is increased
Solution Approach 1:
The patent extracts and transmits the PAN identifier only when necessary for network identification. In messages where the network context is already established or where broadcast/multicast is used, the PAN identifier is omitted. This selective extraction reduces message overhead while preserving network identification information where required
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to the field of IEEE 802.15.4 based networks, and in particular to methods and devices for transmitting and receiving messages in IEEE 802.15.4 based networks. The existing IEEE 802.15.4 standard is further improved and adapted to better fit the properties of a network of lighting devices. The improvements and adaptations of the existing IEEE 802.15.4 standard allow for more flexible addressing. Bits which are indicative of use of address fields and/or whether one or two frame control fields is/are present in the ordered data portions of the message to be transmitted are defined by the device transmitting the message in the IEEE 802.15.4 based network. Existing features of the existing IEEE 802.15.4 standard protocol are retained.