Wireless Access Point VLAN Packet Targeting
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Solution Overview
Problem
In wireless networks, implementing VLANs is challenging due to the broadcast nature of wireless access points, which leads to unnecessary data packet transmission across all SSIDs, causing RF interference, bandwidth waste, and security concerns, as well as transmitting packets to clients that do not need them.
Innovation Solution
A wireless access point maintains a mapping of clients, SSIDs, and VLANs, determining if any client associated with a VLAN is connected and only transmitting data packets on the relevant SSIDs, thereby discarding packets if no clients need them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data packets are transmitted on all SSIDs to ensure VLAN coverage, then all clients on the VLAN can receive packets, but RF interference increases and bandwidth is wasted
Solution Approach 1:
The patent segments the wireless network transmission by creating a mapping between SSIDs and VLANs. The access point divides transmissions into specific SSID channels based on VLAN associations, so that data packets are only transmitted on SSIDs that have associated VLAN clients. This segmentation eliminates the need to broadcast on all SSIDs, reducing RF interference and bandwidth waste while maintaining reliable delivery to all VLAN clients.
Solution Approach 2:
The patent applies local quality by making transmission behavior specific to each SSID-VLAN association. Instead of uniform transmission across all SSIDs, the system tailors transmissions to local conditions - only transmitting on SSIDs where VLAN clients are actually present. This localized approach ensures reliable delivery where needed while avoiding unnecessary transmissions elsewhere, thus reducing overall RF interference and bandwidth consumption.
2Reliability
If data packets are transmitted on all SSIDs, then security is compromised by exposing packets to unauthorized clients, but selective transmission requires maintaining client association mappings
Solution Approach 1:
The patent implements preliminary action by pre-establishing and maintaining mappings between clients, SSIDs, and VLANs before data transmission occurs. The access point continuously tracks which clients are associated with which SSIDs and VLANs in advance. When a data packet needs to be transmitted, the system consults these pre-maintained mappings to determine the appropriate SSID, eliminating the need for broad broadcasting and enhancing security while managing complexity through organized data structures.
Solution Approach 2:
The system uses feedback mechanisms to maintain accurate client-SSID-VLAN mappings. The access point continuously monitors client associations and updates its internal mappings accordingly. This feedback loop ensures that the mapping information remains current, allowing the system to make accurate transmission decisions and maintain security without excessive complexity, as the mappings are automatically updated based on actual network conditions.
3Loss of energy
If data packets are transmitted on all SSIDs, then unnecessary transmissions occur when no clients are present, but selective transmission requires real-time client presence detection
Solution Approach 1:
The patent employs feedback mechanisms where the wireless access point continuously monitors client associations and maintains updated mappings of which clients are present on which SSIDs and VLANs. This real-time feedback allows the system to detect client presence accurately and make informed transmission decisions, transmitting only when clients are actually present and needs to receive packets, thereby eliminating unnecessary transmissions and energy waste.
Solution Approach 2:
The system performs preliminary detection and recording of client associations before data transmission occurs. By maintaining pre-updated mappings of client presence on each SSID-VLAN combination, the access point can quickly determine whether transmission is necessary without requiring complex real-time detection at the moment of transmission. This preliminary action simplifies the detection process while still achieving energy efficiency.
Data Source
AI summary
Techniques are provided for wireless transmission of data packets based on client associations. A data packet may be received at a wireless access point. It may be determined if at least one client associated with the wireless access point should receive the data packet. The data packet may be wirelessly transmitted if it is determined that there is a client that is associated with the wireless access point that should receive the data packet.