Reference Signal Offset Configuration for Wireless Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring and signaling reference signals for positioning, leading to increased overhead and complexity in supporting reliable and low-latency services, especially in next-generation communication systems.
Innovation Solution
The method involves configuring reference signal resources in a staggered resource element pattern, where a common offset value is signaled for all orthogonal frequency division multiplexing symbols, and the individual offset values are determined through a predetermined relationship, reducing the need for separate signaling and enhancing positioning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate offset values are signaled for each OFDM symbol occupied by RS resources, then positioning accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent segments the offset configuration into two parts: a common offset value applicable to all OFDM symbols and individual offset values for specific symbols. This segmentation allows the system to maintain positioning accuracy through symbol-specific offsets while reducing overhead by using a single common offset value instead of signaling all individual offsets separately.
Solution Approach 2:
The patent implements a mechanism where the UE (user equipment) autonomously determines individual offset values based on the common offset value and predefined relationships or patterns. This self-service approach eliminates the need for the network to signal every individual offset value, thereby reducing signaling overhead while maintaining positioning accuracy through UE-derived offset values.
2Adaptability or versatility
If multiple offset values are configured for different OFDM symbols, then reference signal configuration flexibility is improved, but device complexity increases
Solution Approach 1:
The patent segments the offset configuration into a common component and individual components. The common offset value provides a baseline configuration that applies to all OFDM symbols, while individual offset values for specific symbols add necessary flexibility. This segmentation reduces configuration complexity by using a single common value instead of managing multiple independent offset configurations.
Solution Approach 2:
The patent uses parameter changes where the individual offset values are derived by modifying the common offset value according to predefined relationships or patterns specific to each OFDM symbol. This approach maintains configuration flexibility through parameter variation while reducing complexity by using a single base parameter (common offset value) from which all other offsets are derived.
3Loss of information
If a common offset value is used for all OFDM symbols, then signaling overhead is reduced, but positioning precision may deteriorate
Solution Approach 1:
The patent segments the offset into common and individual components. The common offset value reduces signaling overhead by being applied universally, while individual offset values for specific OFDM symbols preserve positioning precision by accounting for symbol-specific characteristics. This segmentation allows the system to achieve both low overhead and high precision simultaneously.
Solution Approach 2:
The patent employs a self-service mechanism where the UE calculates individual offset values based on the common offset value and predefined relationships. This allows the system to maintain positioning precision through symbol-specific offsets without requiring separate signaling, as the UE autonomously derives the necessary individual offsets from the common value, thereby achieving both low overhead and high precision.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Various embodiments of the present disclosure relate to a next-generation wireless communication system for supporting a higher data transmission rate beyond a 4th generation (4G) wireless communication system. According to various embodiments of the present disclosure, a method for transmitting/receiving a signal in a wireless communication system and a device supporting same may be provided.