Direct Multi-User Wi-Fi Transmission via Group Identifiers
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Solution Overview
Problem
Current Wi-Fi communication systems experience increased latency and resource utilization due to the need for transmissions to pass through an access point, which can negatively impact performance in latency-sensitive and high-data-throughput applications.
Innovation Solution
The system enables direct multi-user transmission by configuring responder stations with unique group identifiers and positions, allowing an initiator station to transmit information directly to multiple stations without intermediation through an access point, using TDLS setup requests and responses to manage group identifiers and positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmissions pass through an access point, then network coverage and connectivity are improved, but latency and resource utilization increase
Solution Approach 1:
The patent extracts the transmission path from the access point intermediary, enabling direct peer-to-peer communication between stations. By removing the access point from the direct transmission path (while keeping it for initial connection setup), the system eliminates the additional latency introduced by intermediary forwarding, thus resolving the contradiction between reliable connectivity and low latency.
Solution Approach 2:
The patent uses the access point as a temporary mediator only for establishing direct links between stations. Once direct links are established, data transmissions occur directly between stations without passing through the access point. This selective use of the intermediary resolves the contradiction by maintaining connectivity reliability during setup while eliminating latency during actual data transmission.
2Ease of operation
If transmissions pass through an access point, then network management is simplified, but resource utilization increases
Solution Approach 1:
The patent extracts direct transmission capability from the access point-mediated model, allowing stations to communicate directly. This reduces the resource burden on the access point while maintaining simplified network management through the use of group identifiers and position information that enable organized direct communications.
Solution Approach 2:
The patent segments the network communication into two parts: initial connection management through the access point, and direct data transmission between stations. This segmentation allows the access point to handle only essential management functions while reducing its resource utilization for data forwarding, thus resolving the contradiction between ease of management and resource consumption.
3Loss of time
If direct link communications are established between stations, then latency is reduced, but device complexity increases
Solution Approach 1:
The patent uses universal group identifiers and position information that can be applied across multiple direct link communications. These standardized elements enable stations to establish direct links with multiple other stations using the same protocol framework, reducing the perceived complexity while achieving low-latency direct communications.
Data Source
Figure 1a
Figure 1b
Figure 2a~2b
AI summary
A method for transmitting to a plurality of responder stations includes configuring a first responder station for direct link communications, the first responder station being configured with a first group identifier and a first position (block 922). The method also includes configuring a second responder station for direct link communications, the second responder station being configured with a second group identifier and a second position (block 922). The method further includes transmitting to both the first responder station and the second responder station in a first single transmission, the first single transmission including first information for the first responder station and second information for the second responder station, where the first information is labeled with the first group identifier and located in the first position, and the second information is labeled with the second group identifier and located in the second position (block 940).