Uplink Angle-of-Arrival Positioning Under Network Energy Saving Modes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Uplink-based positioning accuracy is adversely impacted in wireless communication systems when network entities transition to energy saving modes with reduced antennas and power, affecting the reception of positioning reference signals and transmission of sounding reference signals.
Innovation Solution
The system adjusts UL-SRS transmission parameters based on antenna panel configurations associated with energy saving modes, ensuring accurate uplink positioning by accounting for network power saving operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If network entities transition to energy saving modes with reduced antennas and power, then energy consumption is reduced, but uplink positioning accuracy deteriorates
Solution Approach 1:
The system dynamically adjusts UL-SRS transmission parameters based on the network entity's current antenna panel configuration and energy saving mode. The location server receives antenna configuration information and adapts positioning parameters in real-time, allowing the system to optimize between energy consumption and positioning accuracy dynamically rather than using fixed parameters
Solution Approach 2:
The invention changes transmission parameters of UL-SRS signals based on antenna panel configurations. The location server receives information about antenna configurations and adjusts positioning parameters accordingly, modifying signal characteristics to compensate for reduced antenna elements in energy saving modes, thereby maintaining positioning accuracy despite parameter changes
2Device complexity
If network entities use reduced antennas in energy saving modes, then device complexity is reduced, but signal reception quality deteriorates
Solution Approach 1:
The network entity provides feedback to the location server about its antenna panel configuration and energy saving mode status. This feedback mechanism allows the location server to understand the current reception capabilities and adjust positioning parameters accordingly, ensuring reliable signal reception even with reduced antenna configurations
Solution Approach 2:
The system performs preliminary configuration by having the network entity report its antenna panel configurations and supported energy saving modes before positioning operations begin. This advance information allows the location server to pre-adjust parameters and prepare appropriate signaling strategies for the expected antenna configuration
Data Source
AI summary
Aspects presented herein may improve the accuracy of uplink-based positioning when at least one network entity participating in the uplink-based positioning is operating under an energy saving mode. In one aspect, a network entity receives information indicative of a set of antenna panel configurations for a plurality of network nodes, where the set of antenna panel configurations is associated with a set of energy saving modes. The network entity transmits an indication of one or more UL-SRS transmission parameters for a UE based on the information indicative of the set of antenna panel configurations for the plurality of network nodes. In some examples, each antenna panel configuration in the set of antenna panel configurations may include a number of antennas to be used in an UL azimuth angle measurement and a number of antennas to be used in an UL elevation angle measurement under one energy saving mode.