Zero-Power IoT Resource Sharing for Interference-Limited Spectrum
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
ZP-IoT devices cause significant interference in wireless networks due to high transmission power requirements, and frequency range limitations lead to inefficient spectrum use and exclusion of some devices from communication.
Innovation Solution
Implementing different resource sharing schemes for uplink and downlink transmissions, and configuring specific frequency bands for ZP-IoT devices to reduce interference and improve spectrum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high transmission power is used for ZP-IoT devices, then communication reliability is improved, but interference to other devices increases
Solution Approach 1:
The patent applies local quality by assigning different transmit power levels to different devices based on their specific needs. ZP-IoT devices operate at high power within their designated frequency range to ensure reliable communication, while other devices operate at normal power levels. This localized power adjustment resolves the contradiction by confining high power effects to only where needed (ZP-IoT communications) rather than applying high power system-wide, thus maintaining reliability for ZP-IoT while minimizing interference to other devices.
Solution Approach 2:
The patent segments the frequency spectrum into dedicated ZP-IoT frequency ranges and non-ZP-IoT frequency ranges. By dividing the spectrum in this way, ZP-IoT devices can transmit at high power within their allocated bands without causing harmful interference to other devices operating in different bands. This segmentation resolves the contradiction by spatially separating high-power transmissions from other communications in the frequency domain.
2Object-generated harmful factors
If frequency range is limited for ZP-IoT devices, then interference is reduced, but spectrum efficiency deteriorates
Solution Approach 1:
The patent implements dynamic frequency allocation where the network entity can flexibly assign and reassign frequency ranges to ZP-IoT devices based on current network conditions, traffic demands, and interference levels. This dynamic approach resolves the contradiction by allowing the system to expand frequency usage for ZP-IoT when spectrum efficiency is prioritized, while contracting frequency allocation when interference control is prioritized, thus adapting to changing conditions rather than being constrained by fixed limitations.
Solution Approach 2:
The patent makes frequency ranges multi-functional by allowing the same frequency spectrum to serve both ZP-IoT devices and other wireless communications under different conditions. The network entity dynamically configures frequency ranges to accommodate ZP-IoT devices when needed, while maintaining the ability to reallocate those same frequencies for other purposes when ZP-IoT communication is not required or when interference concerns arise. This universality resolves the contradiction by eliminating the need for permanently dedicated frequency bands.
3Reliability
If dedicated frequency bands are allocated for ZP-IoT devices, then communication effectiveness is improved, but resource waste increases
Solution Approach 1:
The patent employs dynamic frequency configuration where dedicated frequency bands for ZP-IoT devices are not permanently fixed but are allocated and released based on actual communication needs. The network entity monitors ZP-IoT device activity and dynamically adjusts frequency allocations, assigning dedicated bands when ZP-IoT communication is active to ensure effectiveness, and releasing or repurposing those bands when not needed to prevent resource waste. This dynamic approach resolves the contradiction by making frequency dedication temporary and demand-driven rather than permanent.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for zero power internet of things communication. An example method performed by a user equipment (UE) includes receiving configuration information for communicating with one or more zero power internet of things (ZP-IoT) devices, wherein the configuration information indicates a first ZP-IoT frequency range for ZP-IoT communications. The method may also include transmitting, using a first resource sharing scheme, uplink (UL) signals to a first ZP-IoT device in the first ZP-IoT frequency range, wherein the first resource sharing scheme used to transmit the UL signals differs from a second resource sharing scheme for transmitting downlink (DL) signals to the first ZP-IoT device.