Managed P2P Groups With Coordinated Secondary-Channel Access
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Solution Overview
Problem
Existing wireless communication technologies, such as Wi-Fi, are inefficient for direct peer-to-peer (P2P) communication between devices within a local area network, as they rely on an access point (AP) for centralized data transfer, leading to increased latency and reduced throughput.
Innovation Solution
Implement coordinated scheduling mechanisms, including light-weight contention and token-based access mechanisms, to establish P2P groups that allow direct bidirectional communication between devices, sharing both time and spectral resources to reduce overhead and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If centralized data transfer through access point is used, then network management is simplified, but latency increases and throughput decreases
Solution Approach 1:
The patent segments the network into P2P groups with designated group owners who manage local communication, rather than having all devices communicate through a single centralized AP. This segmentation reduces latency for local traffic while maintaining simplified management through group owners.
Solution Approach 2:
The patent introduces a new dimension of direct device-to-device communication alongside the traditional AP-mediated communication path. This creates multiple communication dimensions, allowing traffic to take the most efficient path (direct P2P or through AP) based on requirements.
2Reliability
If centralized data transfer through access point is used, then network security is maintained, but airtime efficiency decreases
Solution Approach 1:
The network is segmented into managed P2P groups where the group owner maintains security controls for local communications. This allows secure direct transmission within groups while maintaining overall network security through group-level management.
Solution Approach 2:
The group owner acts as an intermediary that maintains security for P2P group communications. Instead of all security management passing through the central AP, the group owner mediates security for local group traffic, improving airtime efficiency while maintaining security.
3Productivity
If direct peer-to-peer communication is established, then throughput increases, but access coordination becomes complex
Solution Approach 1:
The patent extracts the access coordination function from individual devices and concentrates it in the group owner role. This allows direct P2P communication with high throughput while simplifying coordination complexity by having a single designated device manage group access.
Solution Approach 2:
P2P group members can directly communicate without repeatedly seeking AP intervention for each transmission. The group operates autonomously with the group owner managing internal coordination, allowing members to self-serve their communication needs efficiently.
4Adaptability or versatility
If access point mediates all communications, then device compatibility is ensured, but end-to-end latency increases
Solution Approach 1:
The patent creates a dynamic communication architecture where devices can switch between AP-mediated mode (for compatibility) and direct P2P mode (for low latency). The system adapts the communication path based on traffic requirements, maintaining compatibility while reducing latency when possible.
Data Source
AI summary
Technology is disclosed for an access point (AP). The access point may include a processing device. The processing device may gain, at the AP, a specific bandwidth for a secondary channel in a transmission opportunity (TXOP). The processing device may send, from the AP to a plurality of stations (STAs), an initial control frame (ICF), wherein the ICF signals a frame exchange start for a peer-to-peer (P2P) group of the plurality of STAs and assigns the secondary channel to the P2P group of the plurality of STAs. The processing device may receive, from the P2P group of the plurality of STAs on the secondary channel, a first set of initial control responses (ICRs).