Time-Domain Reference Signal Multiplexing for Joint Wireless Sensing
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Solution Overview
Problem
Joint wireless communication and sensing signaling in wireless communications systems face challenges due to competition for common physical resources, leading to depletion of orthogonal resources and increased interference, which degrades communication performance.
Innovation Solution
A scalable, transform-based multiplexing precoder is employed to time-domain multiplex communication and sensing signals, using a linear precoder to minimize intra-signal interference and optimize resource usage, enabling efficient joint wireless communication and sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If joint wireless communication and sensing signaling is implemented using common physical resources, then resource utilization efficiency is improved, but interference between communication and sensing signals increases
Solution Approach 1:
The patent segments the physical resources by dividing the frequency spectrum into different subbands, with dedicated subbands for communication signals and sensing signals. This segmentation allows both signal types to share the overall physical resources while preventing direct interference between them, resolving the contradiction between resource utilization efficiency and signal interference.
Solution Approach 2:
The patent introduces an intermediary approach by using a precoder as a mediator between the communication and sensing signal generation and reception processes. The precoder processes and separates the signals in the time domain, enabling efficient resource sharing while minimizing interference through controlled signal transformation and separation.
2Object-generated harmful factors
If time-domain multiplexing is used to separate communication and sensing signals, then signal interference is reduced, but device complexity increases
Solution Approach 1:
The patent applies a universal precoder that serves multiple functions: it acts as a time-domain multiplexing mechanism, a signal separator, and a resource allocation manager. This multi-functional approach reduces overall system complexity by consolidating multiple functions into a single component, while still achieving effective signal separation through time-domain multiplexing.
3Adaptability or versatility
If orthogonal resources are depleted for joint communication and sensing, then resource flexibility is improved, but communication performance degrades
Solution Approach 1:
The patent implements dynamic resource allocation where the precoder can adaptively adjust the time-domain multiplexing parameters based on channel conditions and signal requirements. This dynamic approach allows the system to maintain communication performance while achieving resource flexibility, as the multiplexing configuration can be adjusted in real-time to optimize both communication and sensing quality.
Data Source
AI summary
Various aspects of the present disclosure relate to utilizing time-domain multiplexing of both information and reference/sensing signals between transmission nodes and receiving nodes and over available physical resources. In some examples, the present disclosure describes a scalable transform-based multiplexing precoder for joint communications and sensing signals.