Monostatic Sidelink Sensing Beams for Directional Resource Allocation
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Solution Overview
Problem
Existing technologies face challenges in efficiently allocating resources for monostatic sidelink sensing, particularly when user equipment (UE) operates in autonomous mode, leading to inefficient power consumption and interference with other UEs.
Innovation Solution
The UE transmits narrowband sidelink sensing discovery beams, measures signal strength, and determines specific directions for wideband sensing based on reflected signals, optimizing resource allocation and reducing interference by adjusting transmission power and informing nearby UEs about intended sensing directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE transmits wideband sensing signals in all directions, then sensing coverage is improved, but power consumption increases and interference to other UEs worsens
Solution Approach 1:
The patent applies local quality by transmitting wideband sensing signals only in specific directions where reflected signals were detected during the narrowband phase, rather than uniformly in all directions. This directional selectivity concentrates energy where needed, improving sensing coverage in relevant areas while reducing overall power consumption and interference to other UEs in unrelated directions.
Solution Approach 2:
The patent employs preliminary action by first transmitting narrowband sensing discovery beams to scan the environment and identify directions with reflected signals before transmitting the actual wideband sensing signals. This preliminary scanning phase allows the UE to pre-determine which directions require wideband sensing, avoiding unnecessary transmissions in directions without targets, thus optimizing both coverage and power efficiency.
2Measurement precision
If the UE transmits sensing signals in all directions, then sensing accuracy is improved, but interference to other UEs increases
Solution Approach 1:
The patent applies local quality by restricting wideband sensing signal transmissions to specific directions where reflected signals were detected during the narrowband phase. This directional focus maintains sensing accuracy in areas where targets exist while minimizing interference to other UEs in directions where no sensing is required, effectively localizing the harmful interference to only necessary spatial regions.
3Adaptability or versatility
If the UE performs autonomous resource allocation for sensing, then resource allocation flexibility is improved, but resource allocation efficiency worsens
Solution Approach 1:
The patent employs preliminary action by first performing narrowband sensing discovery to identify directions with reflected signals before allocating resources for wideband sensing transmissions. This two-stage approach allows autonomous resource allocation to be flexible in adapting to environmental conditions while maintaining efficiency by pre-determining which directions require resource allocation, avoiding waste on directions without targets.
Solution Approach 2:
The patent applies segmentation by dividing the sensing process into two distinct phases: narrowband sensing discovery and wideband sensing measurement. Each phase has its own resource allocation strategy, with narrowband phase using minimal resources for direction identification and wideband phase allocating resources only to identified directions. This segmentation improves overall resource allocation efficiency while maintaining flexibility through autonomous adaptation to detected environmental conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances resource allocation efficiency, reduces UE power consumption, and minimizes interference by focusing transmissions only where necessary, ensuring accurate sensing with minimal impact on other devices.
Implementation Method 1
measure a respective received signal strength, such as reference signal received power (RSRP), of the plurality of reflected narrowband sidelink sensing discovery beams
Data Source
AI summary
A user equipment UE for performing monostatic sidelink sensing. The UE is configured to transmit a plurality of narrowband sidelink sensing discovery beams directed along a first plurality of transmit directions, measure a respective received signal strength of the plurality of reflected narrowband sidelink sensing discovery beams for the first plurality of transmit directions, and transmit a plurality of wideband sidelink sensing beams along a second plurality of transmit directions. The UE is further configured to determine the second plurality of transmit directions based on the first plurality of transmit directions and the plurality of received signal strengths of the plurality of reflected narrowband sidelink sensing discovery beams. Thus, the UE allows for an efficient allocation of resources for monostatic sidelink sensing.