Interference Measurement Using Downlink Reference Signals
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately measuring co-channel interference between user equipment (UEs) in a cell, which affects scheduling and throughput, especially with the increasing demand for high-definition video services, as existing methods rely on inaccurate location-based estimation.
Innovation Solution
A method involving the use of downlink reference signals to accurately measure interference strength by deducting estimated signal parts and determining interference based on channel measurement quantities, allowing for precise scheduling and improved throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If location-based estimation is used to measure co-channel interference, then the measurement process is simple, but the measurement precision is low
Solution Approach 1:
The patent replaces the mechanical/location-based estimation method with a signal processing-based measurement method. The base station transmits downlink reference signals and the UE measures the actual received signal quality, substituting geometric estimation with electromagnetic signal measurement to achieve higher precision interference strength measurement.
Solution Approach 2:
The patent introduces downlink reference signals as an intermediary to enable accurate interference measurement. These reference signals serve as a known reference that allows the UE to measure and report actual channel conditions and interference levels, acting as a mediator between the base station and UE for accurate interference assessment.
2Productivity
If accurate interference measurement is implemented using downlink reference signals, then scheduling performance improves, but system complexity increases
Solution Approach 1:
The patent implements preliminary action by having the base station transmit downlink reference signals before actual data transmission. This allows the UE to pre-measure interference conditions and report them to the base station, enabling proactive scheduling decisions that improve overall system efficiency while managing complexity through advance preparation.
Solution Approach 2:
The patent establishes a feedback loop where the UE measures interference based on downlink reference signals and reports the measurements back to the base station. This feedback mechanism enables the base station to make informed scheduling decisions, improving productivity while the standardized feedback process helps manage system complexity.
Data Source
AI summary
The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure provides a method of measuring interference and a corresponding device. The method of measuring interference includes: receiving a downlink reference signal from abase station; based on a received downlink reference signal of a first category, acquiring interference strength information of co-channel interference or self-interference caused by a user equipment (UE), which performs uplink transmission on a time frequency resource where the received downlink reference signal of the first category is transmitted, to a current user equipment, or information for the base station to acquire the interference strength information of the co-channel interference or the self-interference; and reporting the acquired interference strength information or the acquired information for the base station to acquire the interference strength information to the base station, wherein the downlink reference signal of the first category is: a downlink reference signal transmitted on a time frequency resource with scheduled uplink transmission. According to the method of measuring interference and the corresponding device, interference strength of co-channel interference between UEs or self-interference of a user equipment can be measured accurately. The present disclosure provides a method and apparatus for a first terminal to transmit information on demodulation failure to a base station in a wireless communication system, and a method and apparatus for a base station to schedule uplink transmission based on the fed back information on demodulation failure. The method for the first terminal includes: receiving and demodulating data from the base station; determining at least one demodulation failure reason respectively associated with at least one second terminal causing inter-terminal interference to the first terminal, when demodulation of the data fails; generating information on demodulation failure based on the determined at least one demodulation failure reason; and transmitting the information on demodulation failure to the base station. The application relates to a method, a base station (BS), a user equipment (UE) and a system thereof for channel switching. The method includes: receiving, from the UE, information indicating that the UE has a full-duplex communication capability; transmitting, to the UE, control signaling notifying the UE to activate the full-duplex communication capability; and scheduling full-duplex transmission for the UE after the UE completes initialization of a self-interference cancellation module, wherein, the base station further configures a full-duplex mode timer and notifies the UE of configuration of the full-duplex mode timer. The present disclosure provides a base station, an apparatus and operation methods thereof for performing interference processing in a wireless communication system. The base station is configured to allocate resources for a plurality of apparatuses communicating with the base station based on a level of inter-apparatus interference among the plurality of apparatuses; and to indicate the allocated resources to the plurality of apparatuses. The apparatus is configured to acquire, from a base station, resources allocated for the apparatus by the base station based on a level of inter-apparatus interference among a plurality of apparatuses communicating with the base station; and to communicate based on the allocated resources.