Antenna Arrangement Adaptation for Virtual Positioning Cell Formation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Modern cellular wireless communication systems, such as LTE, face challenges in ground-based positioning due to effective cell isolation, which hinders the reception of strong signals from multiple base stations, affecting the accuracy of time-of-arrival measurements.
Innovation Solution
Adapting the antenna arrangement configuration to form a virtual positioning cell in a dedicated radio resource, allowing for reduced cell isolation and improved signal reception, either by modifying the radiation pattern of existing antennas or using dedicated positioning antennas, to enhance positioning capabilities without adding extra hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If cell isolation is maintained to minimize inter-cell interference, then system capacity is improved, but positioning performance deteriorates due to inability to receive signals from multiple base stations
Solution Approach 1:
The antenna arrangement configuration is dynamically adapted between traffic mode and positioning mode. During positioning radio resources, the antenna configuration is changed to form a virtual positioning cell with relaxed isolation requirements, allowing UEs to receive signals from multiple base stations for accurate positioning measurements while maintaining high cell isolation during normal traffic operation
Solution Approach 2:
The radio resources are segmented into traffic radio resources and positioning radio resources. During positioning radio resources, the antenna arrangement is reconfigured to create virtual positioning cells that overlap with neighboring cells, enabling positioning measurements without affecting normal traffic capacity
2Measurement precision
If measurement time is increased to improve positioning accuracy, then positioning performance is improved, but system overhead increases
Solution Approach 1:
The invention changes the antenna arrangement configuration parameter during positioning radio resources to form virtual positioning cells. This parameter change enables UEs to receive stronger signals from multiple base stations simultaneously, achieving accurate positioning measurements in a single measurement opportunity rather than requiring extended measurement time
3Measurement precision
If dedicated positioning radio resources are introduced to improve positioning measurements, then positioning performance is improved, but network overhead increases
Solution Approach 1:
The same antenna arrangement is used for both traffic communication and positioning functions. During positioning radio resources, the antenna configuration is adapted to serve positioning purposes, allowing the infrastructure to handle both traffic and positioning tasks without requiring separate dedicated hardware for each function
Data Source
AI summary
Method and arrangement in a network node 302 for improving conditions for ground-based positioning of mobile terminals 310 in a wireless communication system. The method and arrangement concerns adaptation of an antenna arrangement 308 associated with the network node 302, so that a virtual positioning cell 306 is formed in a positioning radio resource, in which positioning reference signals are transmitted or received.