Wireless Device Control Plane Activity Adjustment
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Solution Overview
Problem
Control plane activities in 5G-NR wireless devices, such as channel state information reporting and uplink sounding, contribute to higher power consumption due to frequent transmissions, which is not efficiently managed by existing mechanisms like DRX (Discontinuous Reception).
Innovation Solution
A method where a wireless device receives a configuration from a wireless network to adjust control plane activities based on conditions such as mobility changes or data arrival rates, transmitting assistance information to adjust the periodicity of transmissions, thereby reducing power consumption by optimizing DRX Active Time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control plane activities (channel state information reporting, uplink sounding) are performed frequently to maintain network performance and reliability, then the reliability and measurement precision are improved, but the power consumption increases due to extended DRX Active Time
Solution Approach 1:
The patent applies dynamics by making the control plane activity periodicity adjustable rather than fixed. The network can dynamically modify the periodicity of CSI reporting and SRS transmission based on UE mobility state and channel conditions. When the UE is stationary or in good channel conditions, the periodicity is increased (transmissions occur less frequently), reducing power consumption. When mobility increases or channel conditions deteriorate, the periodicity is decreased to maintain reliability. This dynamic adjustment resolves the contradiction between maintaining reliable control plane operations and reducing power consumption.
Solution Approach 2:
The patent changes the parameter of transmission periodicity to resolve the contradiction. By modifying the periodicity parameter of control plane activities (CSI reporting, SRS transmission) based on mobility state and channel quality, the system can reduce the frequency of transmissions during low-activity periods, thereby extending DRX Active Time and reducing power consumption while maintaining adequate control plane functionality when needed.
2Reliability
If DRX Active Time is extended to maintain control plane activities, then the reliability of control plane operations is improved, but the power saving capability is reduced
Solution Approach 1:
The system dynamically adjusts the duration and frequency of DRX Active Time based on UE mobility state and channel conditions. When the UE is stationary or moving slowly with good channel conditions, the DRX Active Time is extended or transmissions are spaced further apart, allowing the UE to enter sleep mode more frequently and save power. When mobility increases or channel conditions worsen, the DRX Active Time is reduced or transmissions are more frequent to maintain control plane reliability. This dynamic behavior resolves the contradiction between maintaining reliability and achieving power savings.
3Productivity
If control plane transmissions are performed according to fixed periodicity configuration, then the network performance is maintained, but the adaptability to changing mobility states and channel conditions is reduced
Solution Approach 1:
The patent implements feedback mechanisms where the UE reports its mobility state (stationary, slow-moving, fast-moving) and channel conditions to the network. The network uses this feedback to dynamically adjust the periodicity of control plane activities. This feedback loop enables the system to adapt to changing mobility states and channel conditions while maintaining network performance, resolving the contradiction between fixed periodicity performance and adaptability.
Solution Approach 2:
The system transitions from fixed periodicity to dynamic periodicity adjustment based on real-time UE mobility state and channel conditions. The network can increase or decrease the periodicity of CSI reporting and SRS transmission according to actual network conditions, making the system adaptable to varying mobility scenarios while maintaining adequate network performance through condition-based adjustments.
Data Source
AI summary
There is provided receiving, by a wireless device, from a wireless network, a configuration for at least one control plane activity towards the wireless network; and transmitting, by the wireless device, on the basis of determining that one or more conditions for changing the transmission activity are met, assistance information for the at least one control plane activity, to the wireless network.