Communications Device Beam Detection for Lower-Power RRM Measurements
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Solution Overview
Problem
Future wireless communications networks face challenges in power management due to the use of beam forming, particularly in relation to radio resource management (RRM) measurements, which can lead to increased power consumption by user equipment (UEs) when performing cell selection, reselection, and handovers.
Innovation Solution
A method for a communications device to enter a relaxed RRM measurement state based on detecting multiple beams, setting a first evaluation threshold, and dynamically adjusting a second delta threshold according to the number of detected beams, allowing the device to reduce power consumption without compromising RRM and mobility management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam forming is used to improve coverage and data rates, then network performance is improved, but power consumption by user equipment increases due to increased RRM measurements
Solution Approach 1:
The patent implements dynamic adaptation of the delta threshold parameter based on the number of detected beams. When multiple beams are detected, the delta threshold is reduced, allowing the UE to enter relaxed measurement state more easily. This dynamic adjustment resolves the contradiction by making the measurement process adaptive to current radio conditions, reducing power consumption when multiple beams are available while maintaining measurement accuracy when beam selection is critical.
Solution Approach 2:
The patent changes the delta threshold parameter dynamically based on the number of detected beams. By modifying this key parameter according to beam detection results, the system achieves power-efficient RRM measurements without compromising mobility management. This parameter change approach allows the UE to adjust its measurement behavior to match actual network conditions.
2Measurement precision
If the UE performs frequent RRM measurements to ensure accurate mobility management, then measurement accuracy is maintained, but power consumption increases
Solution Approach 1:
The patent dynamically adjusts the delta threshold parameter based on the number of detected beams. When multiple beams are detected, the delta threshold is reduced, enabling the UE to enter relaxed measurement state with lower power consumption while maintaining sufficient measurement accuracy for mobility management decisions.
Solution Approach 2:
The measurement approach transitions from static to dynamic by adapting the delta threshold according to beam detection results. This allows the system to optimize the balance between measurement accuracy and power consumption in real-time based on radio conditions.
3Use of energy by moving object
If the UE enters relaxed measurement state to reduce power consumption, then power efficiency is improved, but measurement accuracy may be compromised
Solution Approach 1:
The patent dynamically adjusts the delta threshold parameter based on the number of detected beams. When multiple beams are detected, the delta threshold is reduced, allowing the UE to enter relaxed measurement state while maintaining sufficient measurement accuracy. This parameter adaptation ensures that power efficiency gains do not come at the cost of compromised mobility management.
4Device complexity
If the delta threshold is set to a fixed value, then device complexity is reduced, but adaptability to different beam conditions is limited
Solution Approach 1:
The patent transforms the static delta threshold into a dynamic parameter that adapts to the number of detected beams. This dynamic approach enhances adaptability to different radio conditions and beam scenarios without significantly increasing device complexity, as the adaptation logic is based on straightforward beam counting and threshold adjustment.
Data Source
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AI summary
A method of operating a communications device for communicating data via a wireless communications network comprises detecting one or more of a plurality of beams of radio signals transmitted by the wireless communications network, the one or more beams of the radio signals which have been detected forming a set of one or more detected beams of radio signals from the plurality of beams of radio signals transmitted from the wireless communications network. The method further comprises determining whether a received signal strength of the radio signals of each of the one or more beams of the set of detected beams exceeds a first evaluation threshold, identifying a sub-set of the set of detected beams of radio signals which can be used to receive data carried by the radio signals of the beam for which the received signal strength exceeds the first evaluation threshold, and entering a relaxed radio measurement state in which the communications device reduces an amount of attempted measurements of the plurality of beams of radio signals compared with a normal state according to one or more relaxed measurement state criteria, and when in the relaxed radio measurement state, determining a reference measurement level based on a signal strength of the radio signals of the sub-set of beams of radio signals. The method further comprises determining whether the communications device should remain in the relaxed radio measurement state by comparing a difference between the reference measurement level and the current measurement level with a second delta threshold, wherein the second delta threshold is set dynamically by the communications device according to a number of the detected beams of the radio signals in the set of detected beams of radio signals.