Uplink Bearer Split via WLAN Aggregation

The patent segments the uplink data transmission by implementing separate bearers for LTE and WLAN networks. The PDCP layer is divided into multiple instances (one for each network), allowing independent data flow management. This segmentation enables the system to utilize both networks simultaneously for uplink transmission, improving overall network efficiency while maintaining manageable complexity through structured separation of functions.

The patent implements self-service mechanisms where the UE autonomously determines the traffic split ratio based on pre-configured parameters and current link conditions. The network provides configuration parameters (such as thresholds and weighting factors), and the UE independently makes splitting decisions without continuous network intervention. This reduces signaling overhead and control complexity while maintaining adaptive quality of service through UE-side intelligence.

The patent segments the buffer status reporting by implementing separate MAC entities for LTE and WLAN, each with its own buffer status reports. The PDCP layer maintains separate data queues for each network interface, allowing independent tracking of data volumes and transmission status. This segmented approach enables the system to manage buffer status for multiple networks simultaneously, increasing data transmission capacity while keeping resource allocation manageable through structured separation.

The patent implements UE-controlled bearer split by allowing the UE to dynamically adjust traffic split parameters based on local conditions such as signal strength, data rate, and buffer status. The network provides initial configuration parameters, and the UE modifies these parameters in real-time based on measured conditions. This approach improves adaptability to local conditions while maintaining reasonable automation levels by leveraging UE-side measurement and decision-making capabilities.