TWT-Based P2P Transmission Scheduling in WLAN Resource Contention
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Solution Overview
Problem
The integration of Peer-to-Peer (P2P) network and Wireless Local Area Network (WLAN) transmission is challenging due to resource contention, with existing mechanisms failing to effectively coordinate the allocation and usage of resources for P2P and WLAN traffic.
Innovation Solution
A method and device architecture that prioritizes P2P transmission during designated Target Wake Time (TWT) Service Periods (SPs), utilizing enhanced TDLS direct links and restricted TWTs to manage resource allocation and usage, enabling AP devices to schedule P2P traffic efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If P2P transmission is allowed simultaneously with WLAN transmission, then communication flexibility and connectivity are improved, but resource contention and interference increase
Solution Approach 1:
The patent segments the transmission medium by introducing TWT Service Periods that divide time into dedicated WLAN transmission intervals and P2P transmission intervals. This temporal segmentation allows both WLAN and P2P communications to coexist without continuous interference, as they operate in alternating time slots rather than simultaneously competing for the same medium.
Solution Approach 2:
The patent implements dynamic resource allocation where the AP device can flexibly adjust and reassign TWT SP time slots based on real-time traffic conditions, device requirements, and network state. This dynamic scheduling allows the system to adapt to changing communication needs while maintaining resource separation, enabling both WLAN and P2P transmissions to receive appropriate resources when needed.
2Productivity
If P2P transmission is prioritized during TWT SP, then P2P transmission efficiency is improved, but WLAN transmission opportunities are reduced
Solution Approach 1:
The patent implements periodic TWT Service Periods that alternate between WLAN-prioritized intervals and P2P-prioritized intervals. This periodic structure ensures that both WLAN and P2P transmissions receive dedicated time slots in a regular cycle, preventing permanent starvation of either traffic type while allowing each to achieve high efficiency during its designated period.
Solution Approach 2:
The patent allows dynamic adjustment of TWT SP parameters including duration, timing, and frequency based on traffic conditions. When P2P traffic requires high efficiency, the system can extend P2P-prioritized intervals; when WLAN traffic needs more opportunities, the system can adjust the schedule accordingly. This parameter flexibility resolves the contradiction by making the prioritization scheme adaptive rather than fixed.
3Quantity of substance
If multiple devices share the same channel, then network capacity and connectivity are improved, but interference and collision probability increase
Solution Approach 1:
The patent resolves channel sharing conflicts by introducing a temporal dimension to resource allocation. Instead of allowing multiple devices to transmit simultaneously on the same channel (spatial overlap), the system schedules transmissions in alternating time slots (temporal separation). This transforms the problem from a spatial resource contention issue to a temporal scheduling issue, enabling multiple devices to share the channel without direct interference.
Data Source
AI summary
A transmission control method, a first non-access point device, and an access point device are provided. The method includes that: a first non-access point device receives first information transmitted by an access point device. Herein, the first information is used for indicating a first Target Wake Time (TWT) Service Period (SP). During the first TWT SP, Peer-to-Peer (P2P) transmission is prioritized on at least one P2P link including a first P2P link between the first non-access point device and a second non-access point device.