Dynamic GBR Bearer Bit Rate Adjustment in 5G Wireless Systems

The patent transforms the static GBR bearer into a dynamic bearer that can adjust its bit rate according to real-time network conditions and UE buffer status. The eNodeB receives buffer status reports from the UE and dynamically modifies the GBR parameter, allowing the system to maintain QoS guarantees when needed while optimizing network efficiency during congestion or signal changes.

The patent changes the GBR parameter from a fixed value to a dynamically adjustable value. The eNodeB receives buffer status reports containing information about the UE's video buffer level and accordingly adjusts the GBR parameter upward when the buffer is low or downward when the buffer is sufficient, thereby adapting the bit rate to current conditions while maintaining QoS where necessary.

The patent implements a feedback mechanism where the UE continuously reports its video buffer status to the eNodeB. Based on this feedback, the eNodeB dynamically adjusts the GBR parameter - increasing it when the buffer is low to prevent re-buffering, and decreasing it when the buffer is sufficient to avoid bandwidth wastage. This closed-loop control optimizes both playback reliability and resource efficiency.

The patent applies partial action by adjusting the GBR parameter only when necessary based on buffer status conditions. Instead of maintaining a consistently high bit rate, the system applies increased bit rate allocation temporarily only when the buffer level indicates risk of re-buffering, thereby preventing playback interruptions while minimizing overall bandwidth consumption during periods when the buffer is adequately filled.