Adaptive Multi-Antenna Configuration for Uplink Positioning
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Solution Overview
Problem
Current uplink positioning techniques are limited by their reliance on single-antenna transmissions, leading to degraded positioning measurement accuracy and potential failures when multi-antenna techniques are used, as the positioning nodes are not aware of the multi-antenna capabilities of the transmitting and measuring nodes.
Innovation Solution
Adapting the antenna configurations of both wireless devices and measuring nodes to utilize multi-antenna techniques such as MIMO, transmit diversity, and beam-forming, and signaling these configurations to ensure compatibility and optimal performance for uplink positioning measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If single-antenna transmission is used for uplink positioning, then the system complexity is low and compatibility is high, but the positioning measurement accuracy degrades and measurement failures occur when multi-antenna techniques are available
Solution Approach 1:
The patent implements dynamic adaptation of antenna configurations at both transmitting and measuring nodes. The system dynamically selects and switches between different antenna configurations (single-antenna, multi-antenna, MIMO, beam-forming) based on channel conditions, device capabilities, and positioning requirements, resolving the contradiction between measurement precision and device complexity through runtime adaptability
Solution Approach 2:
The patent changes the parameters of antenna configurations including the number of active antennas, spatial arrangement, beamforming weights, and MIMO layer configurations. By adjusting these parameters adaptively, the system optimizes positioning measurement accuracy while managing the complexity of multi-antenna systems through controlled parameter variation
2Reliability
If multi-antenna techniques such as MIMO and beam-forming are implemented, then positioning performance improves, but compatibility issues arise when positioning nodes are not aware of the multi-antenna capabilities
Solution Approach 1:
The patent performs preliminary actions by signaling multi-antenna configuration information and capabilities from transmitting nodes to positioning nodes before actual positioning measurements occur. This advance notification ensures that positioning nodes are aware of and can properly process multi-antenna transmissions, thereby improving measurement reliability while maintaining compatibility
Solution Approach 2:
The patent introduces signaling mechanisms as intermediaries that convey multi-antenna capability information between transmitting nodes and positioning nodes. This intermediary communication layer resolves compatibility issues by ensuring that positioning nodes receive and understand the antenna configuration details necessary for accurate measurement of multi-antenna signals
3Measurement precision
If antenna configurations are adapted and signaled to ensure compatibility, then measurement failures are prevented and positioning accuracy improves, but the signaling overhead and system complexity increase
Solution Approach 1:
The patent extracts only the essential multi-antenna configuration information that is necessary for positioning measurements, rather than signaling all possible antenna parameters. By selecting and transmitting only the critical configuration details needed for compatibility and accuracy, the system reduces signaling overhead while maintaining measurement precision
Data Source
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AI summary
Techniques and devices for improving uplink positioning techniques are described. An example method, implemented in a first node in a wireless communications network, begins with obtaining multi-antenna configuration information or multi-antenna capability data, or both, for a second node in the wireless communications network. The node carrying out the node may be a radio base station, a measuring node, or a wireless device to be positioned, in various embodiments. In some embodiments, the second node is a measuring node. In others, the second node is the wireless device to be positioned. The method continues with adapting a multi-antenna configuration of the wireless device for one or more transmissions to be measured for positioning purposes, or adapting a multi-antenna configuration of the measuring node for one or more positioning measurements, or both. The adapting is based on the obtained multi-antenna configuration information or multi-antenna capability data, or both.