Bistatic Sensing Power Control for Interference-Aware Wireless Links
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Solution Overview
Problem
Existing wireless communication systems face challenges in effectively managing power control for bistatic sensing, which is crucial for efficient device-to-device communication and network operations, particularly in advanced radio access technologies like 5G and New Radio (NR).
Innovation Solution
Implementing methods and apparatuses for power control in bistatic sensing, including resource grants, power specifications, and transmit power level configurations for both transmit (Tx) and receive (Rx) user equipment (UE) and network nodes, ensuring optimal power management for sensing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If transmit power level is increased for bistatic sensing, then sensing signal strength is improved, but interference with other wireless communications increases
Solution Approach 1:
The patent implements dynamic power control where the transmit power level is adjusted based on received feedback indications. The system transitions from static power levels to dynamic adjustment, allowing the Tx UE to modify power specifications in response to Rx UE feedback about signal quality and interference conditions, thereby optimizing the balance between sensing strength and interference reduction
Solution Approach 2:
The patent establishes a feedback mechanism where the Rx UE transmits feedback indications to the Tx UE about the quality of received sensing signals and interference levels. This feedback loop enables the Tx UE to adjust transmit power levels accordingly, creating a closed-loop control system that adapts power specifications based on actual channel conditions and interference impacts
2Productivity
If power specifications are configured for bistatic sensing, then sensing operation effectiveness is improved, but system complexity increases
Solution Approach 1:
The patent designs the power control mechanism to serve multiple functions: it controls transmit power for sensing operations, manages interference levels, and adapts to different channel conditions. By making the power control system multi-functional, the patent reduces the need for separate dedicated control mechanisms, thereby limiting the increase in system complexity while maintaining sensing effectiveness
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmit (Tx) user equipment (UE) (Tx UE) may receive a resource grant identifying one or more resources for bistatic sensing with a receive (Rx) UE (Rx UE). The Tx UE may transmit, in the one or more resources identified in the resource grant, a sensing signal in accordance with one or more power specifications. The Tx UE may receive a configuration of a transmit power level, from among the one or more power specifications, for bistatic sensing with the Rx UE. Numerous other aspects are described.