Direct Multi-User Transmission via Group Identifier Segmentation
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Solution Overview
Problem
Current Wi-Fi communication systems experience increased latency and resource utilization due to the need for multiple transmissions through an access point, which can negatively impact performance in latency-sensitive and high-data-throughput applications.
Innovation Solution
A method and system for direct multi-user transmission, where an initiator station requests and receives group identifiers for responder stations from a communications controller, allowing for direct data transmission to multiple stations without intermediation by an access point, using group identifiers managed by a centralized entity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If data transmission goes through an access point for each station, then centralized control and management is maintained, but latency increases and resource utilization worsens
Solution Approach 1:
The patent segments the transmission path by enabling direct links between initiator and responder stations, bypassing the access point for data transmission while maintaining centralized group identifier management. This segmentation reduces latency by eliminating intermediate hops while preserving necessary control functions.
Solution Approach 2:
The access point acts as an intermediary only for group identifier allocation and management, not for actual data transmission. This mediator role allows centralized control to be maintained for resource management while direct transmissions reduce latency and improve efficiency.
2Productivity
If multiple individual transmissions are used to reach multiple stations, then each station receives dedicated data, but resource utilization increases and efficiency decreases
Solution Approach 1:
The patent merges multiple individual transmissions into a single multi-user transmission by combining data for multiple responder stations into one frame. Each station's data is marked with its group identifier, allowing simultaneous delivery to multiple stations and improving resource utilization.
Solution Approach 2:
A single transmission frame serves multiple functions by delivering data to multiple responder stations simultaneously. The universal frame structure with group identifier markings enables one transmission to accomplish what previously required multiple separate transmissions.
3Speed
If direct link setup is established without centralized group identifier management, then transmission speed improves, but coordination and conflict avoidance becomes difficult
Solution Approach 1:
Group identifiers are allocated in advance by the access point before direct link data transmissions occur. This preliminary allocation of identifiers simplifies subsequent direct transmissions by pre-establishing the addressing scheme, avoiding conflicts while enabling fast direct communication.
Data Source
AI summary
A method for transmitting to a plurality of responder stations includes transmitting a first direct link setup request message to a first responder station via an access point, the first direct link setup request message including a first group identifier, the first group identifier being received from a communications controller and being associated with the first responder station, and transmitting a second direct link setup request message to a second responder station via the access point, the second setup request message including a second group identifier, the second group identifier being received from the communications controller and being associated with the second responder station. The method also includes transmitting data to the first responder station and the second responder station in a single transmission.