5G NR Data Plane Latency Feedback for Reordering Timer Control

The patent implements feedback mechanisms where the receiver detects latency associated with queued packets and sends aggregated acknowledgments (ACKs) containing latency indications back to the transmitter. This feedback loop enables the transmitter to adjust reordering timers and avoid dropping packets that are merely delayed rather than lost, thereby maintaining packet delivery reliability while preserving high data transmission throughput.

The patent dynamically adjusts reordering timers based on detected packet latency. Instead of using fixed timer values, the system modifies reordering timer durations according to actual latency conditions observed in the data plane. This dynamic adaptation allows the system to tolerate variable latency without prematurely discarding packets, resolving the contradiction between maintaining throughput and ensuring reliable delivery.

The patent applies preliminary action by having the receiver detect and record latency information for queued packets before the packets are potentially dropped. By proactively measuring latency and incorporating this information into aggregated acknowledgments sent to the transmitter, the system可以避免 unnecessary packet drops while maintaining ordering, thus reducing wasted time from retransmissions.

The patent merges latency detection functionality with the existing acknowledgment process. Instead of implementing a separate latency detection and reporting mechanism, the system combines latency measurements into aggregated ACKs that are already being used for packet acknowledgment. This integration reduces overhead and time loss while maintaining packet delivery order through coordinated reordering timer management.

The patent makes the acknowledgment mechanism universal by enabling it to serve multiple functions simultaneously: traditional packet acknowledgment and latency indication reporting. The aggregated ACK structure is designed to carry both acknowledgment information and latency measurements in a unified format, allowing the same communication channel and processing logic to handle both functions without requiring separate complexity-heavy systems.

The patent changes the parameters of the acknowledgment message to include latency indications alongside traditional acknowledgment bits. By modifying the ACK structure to carry additional latency information and implementing corresponding processing logic at the transmitter to interpret these parameters, the system achieves efficient multi-functional acknowledgments without excessive complexity, as the changes build upon existing protocol frameworks.