Prioritized TXOP Sharing for Low-Latency Wireless

The transmission opportunity is segmented into different priority classes (high priority and low priority TXOPs). High priority TXOPs are allocated exclusively to high priority traffic, while low priority TXOPs serve best effort traffic. This segmentation eliminates the need for high priority traffic to wait in a queue, thereby reducing latency and jitter while maintaining backward compatibility with traditional 802.11 mechanisms.

The system dynamically switches between high priority and low priority transmission modes based on the presence of high priority traffic. When high priority traffic is detected, the system transitions to high priority TXOP mode with exclusive access. When only low priority traffic is present, the system uses traditional low priority TXOP mode. This dynamic adaptation optimizes latency performance without compromising overall system productivity.

The shared transmission opportunity is segmented into high priority and low priority portions. High priority stations receive dedicated TXOPs with guaranteed access, while low priority stations share remaining opportunities. This segmentation allows high priority traffic to achieve low latency while low priority traffic benefits from the increased overall throughput enabled by multi-station sharing.

Different quality levels of service are provided to different traffic types within the same transmission opportunity. High priority traffic receives guaranteed latency performance (local quality), while low priority traffic receives best effort service. This local differentiation maintains high throughput for the system while ensuring low latency for critical applications.

The frame format is segmented into a common legacy preamble (for compatibility) and a new high priority indication field. The common preamble maintains compatibility with existing 802.11 devices, while the new field enables low latency operation for high priority traffic. This segmentation allows the system to maintain reliability through compatibility while achieving low latency performance.

Instead of modifying existing frames to add latency reduction features, the invention inverts the approach by using a trigger frame mechanism that schedules transmissions before they occur. The trigger frame includes high priority indications that preemptively reserve resources, inverting the traditional approach of modifying data frames during transmission.

Transmission resources are segmented into high priority and low priority allocation pools. High priority stations are allocated dedicated resources with guaranteed access, while low priority stations share remaining resources. This segmentation maximizes overall resource utilization by allowing all stations to transmit simultaneously in different pools, while ensuring low latency for high priority traffic through dedicated allocation.

The resource allocation is dynamically adjusted based on traffic conditions. When high priority traffic is present, the system dynamically shifts resources to guarantee low latency performance. When only low priority traffic is present, the system maximizes resource utilization by allowing all stations to share opportunities. This dynamic adaptation resolves the contradiction between utilization and latency.