Multi-AP Data Sharing via AP Identifier Addressing

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Solution Overview

Problem

Current wireless local area network (WLAN) systems face challenges in efficiently sharing data between multiple access points (APs) without the need for group IDs, particularly in multi-AP transmission scenarios, which limits the effectiveness of data distribution and increases operational complexity.

Innovation Solution

A method where a station (STA) in a WLAN system receives an announcement frame from a sharing AP, allowing data to be shared without setting a group ID, by broadcasting the sharing AP's identifier and using it as the receiver address in data frames, enabling data sharing between multiple APs similar to multicasting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If group ID allocation is used for data sharing between APs, then data distribution capability is improved, but device complexity and operational procedures increase

Engineering Contradiction:

Improvedata distribution capabilityVSAvoidoperational complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent extracts the group ID allocation procedure from the data sharing process. Instead of requiring group ID setup, the system directly uses the sharing AP's identifier as the receiver address, removing the unnecessary intermediate step of group ID management while maintaining multi-AP data sharing capability

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The sharing AP's identifier serves multiple functions: it acts as both the broadcast address for announcement frames and the receiver address for data frames. This multi-functional use of the identifier eliminates the need for separate group ID allocation, simplifying the system while maintaining versatility

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If group ID allocation procedure is implemented, then multi-AP data sharing is enabled, but time and operational steps are increased

Engineering Contradiction:

Improvemulti-AP data sharingVSAvoidsetup time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system performs preliminary action by pre-configuring the sharing AP's identifier to serve as the receiver address. This preparation eliminates the need for time-consuming group ID allocation procedures during data sharing operations, as the identifier is already in place and ready for use

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent removes the group ID allocation step from the operational sequence. By using the sharing AP's identifier directly as the receiver address, the system extracts and eliminates the time-consuming group ID management procedure while maintaining the essential multi-AP data sharing functionality

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS12108418B2Data sharing in multi-AP system

Publication Date: 2024.10.01 LG ELECTRONICS INC

AI summary

In a wireless local area network system, a shared AP may receive an announcement frame and a data frame from a sharing AP for multi-AP transmission. In the present disclosure, the announcement frame may be transmitted in a broadcasting scheme. The data field of the announcement frame may include an identifier (ID) of the shared AP. The shared AP may receive a data frame from the sharing AP. In the present disclosure, a receiver address (RA) field of the data frame may include an address of the sharing AP. The shared AP may decode the data frame based on the address of the sharing AP included in the RA field of the data frame.