Positioning Reference Signal Mapping via Dynamic Resource Offsets
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Solution Overview
Problem
The configuration of relative resource element offsets for positioning reference signals in wireless communication systems has not been adequately addressed, leading to inefficiencies and increased overheads, particularly in systems with varying comb sizes and symbol quantities.
Innovation Solution
A method for mapping positioning reference signals involves obtaining and determining relative resource element offsets for each symbol in the signal resource, using configuration information or generation formulas provided by a network-side device, allowing terminals to accurately locate these offsets and transmit the signals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple configurations of positioning reference signal resources are supported with the same comb size and number of symbols, then the adaptability of the system is improved, but the complexity of configuring and managing relative resource element offsets increases
Solution Approach 1:
The patent applies parameter changes by introducing a generation formula that dynamically calculates relative resource element offsets based on configurable parameters such as comb size, number of symbols, and starting position. Instead of manually configuring offsets for each scenario, the system changes the parameters in the generation formula to adapt to different positioning reference signal resource configurations, thereby achieving multiple configurations without increasing management complexity.
2Manufacturing precision
If relative resource element offsets are configured for each symbol in positioning reference signal resources, then the precision of signal mapping is improved, but the overhead of configuration information increases
Solution Approach 1:
The patent applies the self-service principle by enabling terminals to autonomously generate relative resource element offsets using a standardized generation formula. Instead of requiring the network to configure and transmit offset values for each symbol, the terminal uses the formula with provided parameters (comb size, symbol count, starting position) to self-generate the precise offset values needed for accurate signal mapping, thereby eliminating configuration overhead while maintaining precision.
Solution Approach 2:
The patent applies copying by having terminals replicate the offset generation process locally using the generation formula. Instead of receiving unique offset configurations from the network, terminals copy the same generation logic and parameters, independently producing the required offset values. This ensures consistent precision across all terminals while minimizing network signaling overhead.
3Ease of manufacture
If positioning reference signal resources use fixed resource element allocation, then the simplicity of resource management is improved, but the efficiency of positioning measurements deteriorates due to inability to optimize for different scenarios
Solution Approach 1:
The patent applies dynamics by transitioning from fixed resource element allocation to dynamic allocation based on positioning requirements. The generation formula allows the system to adaptively determine optimal resource element offsets according to different scenarios (different comb sizes, symbol quantities, and starting positions). This dynamic approach maintains simplicity through a unified formula while significantly improving positioning measurement efficiency by optimizing resource allocation for each specific scenario.
Data Source
AI summary
A method for mapping a positioning reference signal, a terminal, and a network-side device are provided. The method for mapping a positioning reference signal is applied to a terminal and includes: obtaining mapping information of a positioning reference signal, where the mapping information indicates relative resource element offsets of at least some symbols in a positioning reference signal resource; and determining, based on the mapping information, a relative resource element offset of each symbol in the positioning reference signal resource.