Adaptive Beam Tracking Measurement Control for 5G Wireless
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Solution Overview
Problem
Current beam tracking methods in wireless communication, such as 5G, require frequent and resource-intensive measurements to adjust beams for user devices as they move, leading to inefficient use of communication resources and potential service disruptions.
Innovation Solution
A method that dynamically adjusts beam tracking measurement frequency, periodicity, period, and interval based on estimated distance and velocity of user devices, using parameters like timing advance and reference signal received power, to optimize beam selection and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam tracking measurements are performed frequently to maintain proper service for moving user devices, then service reliability is improved, but communication resource consumption increases
Solution Approach 1:
The patent applies dynamics by making the beam tracking measurement frequency adaptive rather than static. The measurement frequency is dynamically adjusted based on user device conditions including velocity, distance, and beam direction changes. This allows the system to perform measurements frequently when needed (high mobility scenarios) and less frequently when not needed (low mobility scenarios), resolving the contradiction between service reliability and resource consumption.
Solution Approach 2:
The patent changes the parameter of measurement frequency based on multiple factors including user device velocity, distance from access node, and beam direction changes. By adjusting this key parameter dynamically, the system achieves proper beam tracking for moving devices while avoiding excessive measurements when devices are stationary or moving slowly, thus balancing service reliability with resource efficiency.
2Measurement precision
If beam tracking measurements are performed frequently to track user device movement, then beam tracking accuracy is improved, but power consumption increases
Solution Approach 1:
The patent makes the measurement frequency dynamic based on user device velocity and movement patterns. When devices are stationary or moving slowly, measurement frequency is reduced, lowering power consumption. When devices move quickly or change direction significantly, measurement frequency increases to maintain tracking accuracy. This dynamic adjustment resolves the contradiction between measurement precision and power consumption.
Solution Approach 2:
The patent adjusts the measurement frequency parameter based on velocity thresholds and distance changes. By changing this parameter adaptively, the system maintains adequate beam tracking accuracy for moving devices while minimizing unnecessary measurements that would consume power, thus resolving the contradiction between measurement precision and energy usage.
3Duration of action of stationary object
If beam tracking is performed with high frequency to maintain service continuity, then service continuity is improved, but communication resource availability for data transmission decreases
Solution Approach 1:
The patent implements periodic beam tracking measurements with variable periods based on user device conditions. Instead of continuous high-frequency measurements, the system uses periodic measurements with adjusted intervals. When devices are stationary, periods are extended; when devices move, periods are shortened. This periodic approach maintains service continuity while freeing up communication resources for data transmission during intervals between measurements.
Solution Approach 2:
The patent changes the measurement period parameter dynamically based on velocity, distance, and beam direction changes. By adjusting this parameter, the system ensures measurements occur frequently enough to maintain service continuity for moving devices but not so frequently that resources are depleted for data transmission, thus resolving the contradiction between service continuity and data transmission efficiency.
Data Source
AI summary
A method for wireless communication is disclosed, wherein an access node is configured to transmit signals using beamforming to a user device, wherein transmitting signals using beamforming comprises transmitting signals using a selected beam of a plurality of available beams, and wherein beam tracking comprises measurements by the user device on a candidate set of beams of the plurality of available beams for beam selection. The method comprises estimating at least one of a distance from the access node to the user device and a velocity parameter of the user device, and adjusting one or more of a beam tracking measurement frequency, a beam tracking measurement periodicity, the beam tracking measurement period, and a beam tracking measurement interval based on at least one of the estimated distance from the access node to the user device and the estimated velocity parameter of the user device. In some embodiments, adjusting one or more of the beam tracking measurement frequency, the beam tracking measurement periodicity, the beam tracking measurement period, and the beam tracking measurement interval is further based on a load of the access node and/or on a priority of the user device. Corresponding apparatus, network node and computer program product are also disclosed.