Terminal Device RSSI Measurement and Channel Occupancy Reporting
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Solution Overview
Problem
Existing communication systems face inefficiencies in measuring and reporting Received Signal Strength Indicator (RSSI) and channel occupancy, which hinders effective communication between terminal devices and base stations, particularly in heterogeneous wireless networks.
Innovation Solution
A terminal device equipped with a reception unit for higher layer signaling, a measurement unit for RSSI and channel occupancy, and a transmission unit for reporting measurement results, including an average RSSI over a specified period and channel occupancy above a threshold, to enhance communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional RSSI measurement and reporting methods are used, then the measurement process is simple, but the transmission efficiency and communication performance deteriorate due to inaccurate interference and noise assessment
Solution Approach 1:
The patent segments the RSSI measurement process by introducing channel occupancy detection as a separate measurement component. The terminal device measures both RSSI values and channel occupancy states independently, then reports them separately to the base station. This segmentation allows for more precise characterization of interference conditions by distinguishing between occupied and unoccupied channel states, thereby improving measurement precision without compromising transmission efficiency.
Solution Approach 2:
The patent implements a feedback mechanism where the terminal device reports measured RSSI values and channel occupancy information to the base station. The base station uses this feedback to make informed decisions about resource allocation and interference management. This feedback loop enables the system to adapt to changing channel conditions, improving both measurement precision and transmission efficiency through data-driven decisions.
2Productivity
If detailed measurement reporting is implemented to improve communication efficiency, then the resource allocation and interference management improve, but the signaling overhead and processing complexity increase
Solution Approach 1:
The patent makes the measurement and reporting mechanism universal by applying the same RSSI and channel occupancy measurement approach across different wireless communication scenarios, including heterogeneous networks and unlicensed bands. The base station configures measurement parameters universally, and the terminal device applies the same measurement and reporting procedure regardless of specific network conditions. This universality simplifies device complexity by providing a standardized approach that works across multiple scenarios.
Solution Approach 2:
The patent enables flexible parameter configuration where the base station can adjust measurement parameters such as measurement bandwidth, reporting intervals, and thresholds based on network conditions. This parameter adaptability allows the system to optimize communication efficiency without permanently increasing device complexity, as the complexity only arises when needed and can be adjusted down when conditions improve.
3Measurement precision
If RSSI measurement is performed continuously to improve accuracy, then the interference assessment improves, but the energy consumption and processing load increase
Solution Approach 1:
The patent implements periodic measurement action where the terminal device measures RSSI values at configured intervals rather than continuously. The base station configures measurement periodicity and triggers reporting based on specific conditions or time schedules. This periodic approach maintains adequate interference assessment accuracy by taking measurements at representative moments while significantly reducing energy consumption compared to continuous measurement.
Solution Approach 2:
The patent applies partial measurement action by measuring channel occupancy and RSSI only when relevant for communication decisions. Rather than continuously measuring all parameters, the system performs measurements selectively based on communication needs, triggering measurements only when channel conditions change or when resource allocation decisions are required, thereby reducing unnecessary energy consumption while maintaining adequate measurement precision.
Data Source
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AI summary
A terminal device including a reception unit configured to receive higher layer signalling including a first configuration relating to measurement of a Received Signal Strength Indicator (RSSI) and a second configuration relating to reporting of the RSSI, a measurement unit configured to measure the RSSI and/or a channel occupancy; and a transmission unit configured to report a measurement result for the RSSI and/or the channel occupancy. The measurement result for the RSSI is an average of measurement results obtained in a first period, and the channel occupancy is obtained based on the measurement results equal to or greater than a first threshold among the measurement results obtained in the first period.