SCG Data Arrival Signaling for Inactive Bearer Resumption
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing data bearers for secondary cell groups (SCG) that are deactivated or inactive, leading to data buffering and suboptimal resource utilization.
Innovation Solution
A user equipment (UE) detects data arrival in a SCG data buffer and transmits an indication to the network, allowing for the resumption or suspension of data bearers based on SCG inactivity and radio quality thresholds, enabling efficient resource management and activation of SCG when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the SCG is kept inactive to save resources, then energy consumption is reduced, but data transmission capability is lost
Solution Approach 1:
The SCG is dynamically switched between inactive and active states based on data arrival conditions. When data arrives in the buffer, the SCG is activated to enable transmission; when no data is present, the SCG remains inactive to conserve energy. This dynamic state transition resolves the contradiction between energy savings and data transmission capability.
Solution Approach 2:
The network is预先 configured with data arrival indications and buffer status monitoring mechanisms. When data is detected in the buffer before the SCG becomes active, the system prepares for immediate activation, ensuring no data loss while minimizing the time the SCG spends in the active state, thus balancing energy consumption with transmission readiness.
2Loss of time
If the SCG is activated immediately when data arrives, then data transmission latency is reduced, but resource utilization efficiency decreases
Solution Approach 1:
Instead of continuous activation, the SCG is activated periodically only when data arrival is detected. The system monitors the buffer status and activates the SCG in response to data arrival events, creating a periodic activation pattern that reduces overall energy consumption while maintaining low latency for actual data transmissions.
Solution Approach 2:
The system uses self-service mechanisms where the data buffer itself triggers the SCG activation through data arrival indications. This automatic trigger mechanism eliminates the need for continuous network control signaling, reducing overhead and improving resource utilization efficiency while ensuring timely activation when needed.
3Loss of energy
If data bearers are suspended for inactive SCG, then resource overhead is reduced, but data transmission readiness is compromised
Solution Approach 1:
The system performs preliminary actions by monitoring buffer status and detecting data arrival before the SCG is activated. This early detection allows the system to prepare for activation in advance, ensuring that when the SCG is activated, data transmission can begin immediately without compromise to reliability, while maintaining suspended state for resource efficiency during inactive periods.
Solution Approach 2:
A feedback mechanism is implemented where data arrival indications from the buffer trigger SCG activation. This closed-loop feedback ensures that the SCG is activated only when necessary, maintaining data transmission readiness while minimizing resource overhead. The feedback loop continuously monitors buffer status and adjusts SCG state accordingly.
Data Source
AI summary
There is provided a method comprising: detecting, by a user equipment, UE, of a wireless communication network, an arrival of data into a data buffer associated with a data bearer configured for a secondary cell group (SCG); determining whether or not the SCG is currently inactive; and if the SCG is determined to be currently inactive, 5 transmitting an indication to a network element of the wireless communication network about the arrival of data.