Delay Status Reporting MAC Control Element for Wireless Networks

The patent segments the buffer status reporting by dividing data into delay-critical and non-delay-critical portions. The DSR MAC CE is structured to report only the delay-critical buffer status (first buffer status value) separately from regular buffer status reports. This segmentation allows the BS to receive precise information about urgent data without the overhead of reporting all buffer contents, thus improving measurement precision while controlling procedure complexity.

The patent extracts only the essential delay-critical information from the complete buffer status and includes it in the DSR MAC CE. By taking out only the first buffer status value (delay-critical data volume) and excluding detailed information about non-urgent data, the system achieves accurate resource allocation for time-sensitive traffic without the signaling overhead of comprehensive buffer reporting, resolving the contradiction between precision and complexity.

The patent applies local quality by making the DSR triggering conditional rather than universal. The UE monitors the buffer status and triggers DSR only when delay-critical data volume exceeds a threshold or when specific conditions are met. This selective triggering ensures reliable reporting of critical data status while avoiding unnecessary signaling for non-critical situations, thus maintaining high reliability while reducing overall signaling overhead and energy consumption.

The patent changes the triggering parameter from continuous reporting to threshold-based reporting. Instead of triggering DSR for every buffer status change, the system uses parameter changes (buffer status thresholds, time thresholds) to determine when reporting is necessary. This approach maintains reliability by ensuring critical status changes are reported while significantly reducing the frequency of signaling transmissions, thereby lowering uplink overhead and energy loss.

The patent extracts only the essential delay-critical buffer status information (first buffer status value) and includes it in the DSR MAC CE, while excluding detailed information about non-urgent data. This extraction provides the BS with sufficient visibility into critical data status for effective resource allocation without requiring the complete buffer status, thus preventing information loss about critical data while keeping MAC CE size and processing complexity manageable.

Instead of reporting all buffer status information and filtering at the BS, the patent inverts the approach by having the UE selectively report only delay-critical information upfront. This inversion eliminates the need for complex processing to filter unnecessary data at the BS, reducing MAC CE processing complexity while maintaining complete visibility into the most important buffer status aspects for resource allocation decisions.