Full-Duplex Self-Interference Measurement via Beam Pair Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in effectively managing self-interference in full-duplex transmissions, which affects the selection of optimal beam pairs for wireless communication, leading to suboptimal performance and resource inefficiency.
Innovation Solution
The method involves a base station and user equipment exchanging channel measurement and interference measurement configurations, enabling a self-interference measurement procedure that considers quasi co-location information to determine suitable beam pairs, thereby optimizing beam selection for full-duplex communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex transmissions are implemented to improve spectral efficiency and reduce latency, then productivity and resource utilization are improved, but self-interference increases making beam pair selection more difficult
Solution Approach 1:
The patent segments the measurement process into distinct channel measurement resources (CMR) and interference measurement resources (IMR), with further segmentation of IMR into overlying IMR and underlying IMR. This segmentation allows independent optimization and measurement of different interference components, making beam pair selection feasible in full-duplex systems by breaking down the complex self-interference measurement into manageable parts.
Solution Approach 2:
The patent introduces quasi-co-location (QCL) information as an intermediary that links CMR and IMR. The QCL information provides spatial relationship parameters that enable the system to correlate channel measurements with interference measurements, facilitating accurate beam pair selection despite the presence of self-interference in full-duplex operations.
2Measurement precision
If self-interference measurement is performed in full duplex mode to improve beam selection accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent configures IMR to serve multiple functions: it measures both overlying interference (from other cells) and underlying interference (self-interference from full-duplex transmission). The same IMR structure and measurement procedures are used for both interference types, reducing the need for separate measurement mechanisms and thereby limiting the increase in device complexity while maintaining measurement precision.
Solution Approach 2:
The patent performs preliminary configuration of IMR with QCL information before actual interference measurement. By pre-establishing the spatial relationships and measurement resources, the system prepares the measurement framework in advance, which simplifies the execution phase and reduces operational complexity during full-duplex beam pair selection.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a channel measurement (CM) process indicating at least one channel measurement resource (CMR) associated with quasi co-location (QCL) information, wherein the QCL information corresponds to a transmit (Tx) beam of the base station associated with a receive (Rx) beam of the UE; receive a configuration for an interference measurement (IM) process indicating at least one interference measurement resource (IMR) associated with a UE beam pair comprising the Rx beam of the UE and a Tx beam of the UE; perform a self-interference measurement (SIM), wherein the SIM procedure is based at least in part on the CM process and the IM process; and transmit, to the base station, a measurement report based at least in part on the SIM procedure. Numerous other aspects are provided.