Wireless Advertisement Frame Bridging Mixed Media Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In computer networks with mixed wireless and wired media, wireless bridges face challenges in determining whether reflected broadcast frames are self-originated or from a moved device, leading to connectivity issues, excessive flooding, and duplicate deliveries, as they cannot distinguish between reflections and new location advertisements within current IEEE standards.
Innovation Solution
Implementing a four-address format for wireless advertisement frames, where the receiver address specifies all receivers except the transmitting node, allowing bridges to differentiate between self-originated and reflected frames, and ensuring compatibility with standardized protocols like 802.1, 802.3, and 802.11.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wireless station acts as a bridge in an 802.11 network, then it can interconnect wireless and wired media, but it cannot determine whether reflected broadcast frames are self-originated or from moved devices
Solution Approach 1:
The patent introduces a fourth address field in the 802.11 frame structure to add dimensional information. This receiver address field provides an additional dimension that enables bridges to distinguish between self-originated and reflected frames, resolving the information loss problem while maintaining bridging functionality.
Solution Approach 2:
The receiver address field acts as an intermediary element that carries identification information about the intended recipient. This intermediary field enables the bridge to determine whether a reflected frame is meant for itself or another device, solving the frame origin identification problem without compromising the bridging capability.
2Reliability
If access point reflects all broadcasts back to all stations, then broadcast delivery is achieved, but wireless bridges cannot suppress reflections of their own advertisements
Solution Approach 1:
The receiver address field provides feedback information to the receiving bridge about whether the reflected frame is intended for itself. This feedback mechanism enables the bridge to suppress duplicate advertisements of its own while maintaining reliable broadcast delivery to other stations.
Solution Approach 2:
The patent extracts the receiver address information from the reflected frame and uses it to make suppression decisions. By taking out this identification information, the bridge can filter out harmful duplicate advertisements while preserving necessary broadcast deliveries.
3Reliability
If proprietary protocols are used to overcome bridging issues, then connectivity losses and flooding are reduced, but the solution does not conform to industry standards
Solution Approach 1:
The patent extends the existing 802.11 frame structure by adding a receiver address field that serves multiple functions: it enables bridge identification, supports broadcast delivery, and maintains compatibility with existing standards. This universal approach improves reliability while preserving protocol compatibility.
Solution Approach 2:
The invention changes the frame structure parameter by adding a fourth address field, transforming the standard-compliant frame format to include receiver address information. This parameter change enables standard-compliant bridges to achieve reliable connectivity without requiring proprietary protocols.
Data Source
AI summary
In one embodiment, a transmitting node may be configured to transmit a wireless advertisement frame over a computer network, wherein the frame includes a source address of a reachable node being advertised, a destination address to which the reachable node is to be advertised, a transmitter address of the transmitting node, and a receiver address of a wireless access point to which the wireless advertisement frame is to be received. Also, the wireless access point may be configured to receive the wireless advertisement frame from the network, and in response, transmit a reflected wireless advertisement frame having the source address of the reachable node, the destination address to which the reachable node is to be advertised, a transmitter address of the access point, and a receiver address that indicates the reflected frame is to be accepted by any appropriate receiver excluding the transmitting node.