DL PRS Multiplexing for Joint Communication Sensing
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently multiplexing resources for joint communication and sensing (JCAS) in sixth-generation (6G) networks, particularly in coordinating communication and sensing operations while maintaining performance and hardware efficiency, especially in scenarios requiring flexible design and resource sharing between communication and sensing functions.
Innovation Solution
The proposed solution involves the reuse and extension of DL Positioning Reference Signals (PRS) for sensing applications, utilizing time domain multiplexing (TDM) between communication and sensing, and configuring sensing frame structures with adjustable Symbol Repetition Intervals (SRI) and cyclic prefix (CP) designs to optimize resource allocation and interference handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time domain multiplexing is used between communication and sensing, then resource sharing efficiency is improved, but coordination complexity increases
Solution Approach 1:
The patent segments the time domain into distinct communication slots and sensing slots, with sensing occurring in subframes between communication slots. This segmentation allows independent optimization of communication and sensing operations while maintaining efficient resource sharing, resolving the contradiction between productivity and coordination complexity.
Solution Approach 2:
The patent employs preliminary action by configuring sensing frame structures with adjustable symbol repetition intervals and cyclic prefix designs before actual sensing operations. This preconfiguration enables the system to optimize resource allocation and interference handling in advance, reducing real-time coordination complexity while maintaining high resource sharing efficiency.
2Measurement precision
If sensing performance is enhanced through extended DL PRS, then measurement precision is improved, but time consumption increases
Solution Approach 1:
The patent implements periodic action through the use of symbol repetition intervals in the sensing frame structure. By periodically repeating sensing symbols at optimized intervals, the system enhances measurement precision through multiple samples while controlling time consumption through efficient periodic scheduling rather than continuous operation.
Solution Approach 2:
The patent applies parameter changes by configuring adjustable symbol repetition intervals and cyclic prefix durations based on specific sensing requirements. This allows optimization of the balance between measurement precision and time consumption by adapting parameters such as SRI duration and CP length to match the desired sensing performance level.
3Adaptability or versatility
If flexible SRI and CP configurations are used, then adaptability is improved, but system complexity increases
Solution Approach 1:
The patent implements dynamics by enabling adjustable symbol repetition intervals and cyclic prefix configurations that can be adapted to different sensing scenarios. This dynamic configuration capability provides flexibility in resource allocation while managing system complexity through standardized adjustment mechanisms rather than custom designs.
Solution Approach 2:
The patent applies universality by designing a multi-functional sensing frame structure that can serve multiple sensing applications through a single unified configuration system. The adjustable SRI and CP parameters work across different sensing scenarios (transportation, high-speed applications, etc.), providing adaptability without requiring separate specialized systems for each application.
Data Source
AI summary
Various embodiments herein provide techniques related to a process to be performed by an electronic device. The electronic device may: identify a plurality of downlink positioning reference signal (DL-PRS) symbols related to sensing to be performed during a sensing operation; identify a plurality of orthogonal frequency division multiplexed (OFDM) symbols related to data; generate a cellular transmission that includes a symbol repetition interval (SRI) composed of the plurality of DL-PRS symbols and the plurality of OFDM symbols; and transmit the cellular transmission. Other embodiments may be described and/or claimed.