Multi-Rx Chain UE Architecture for Simultaneous Data Reception and RRM Measurement
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Solution Overview
Problem
Current user equipment (UE) designs with single active receiver chains face limitations in performing radio resource management (RRM) measurements and data reception simultaneously, leading to increased evaluation time and reduced spherical coverage, especially in FR2 environments where omnidirectional reception is assumed.
Innovation Solution
The implementation of multi-Rx chain UE architectures that allow simultaneous data reception and RRM measurements using multiple receiver chains, with the ability to switch between data reception and measurement modes, reducing scheduling restrictions and optimizing throughput during RRM operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single receiver chain is used for data reception, then device complexity is reduced, but measurement precision and spherical coverage deteriorate when performing RRM measurements
Solution Approach 1:
The receiver is divided into multiple independent receiver chains (at least two), where each chain can independently perform either data reception or RRM measurements. This segmentation allows simultaneous operation of multiple functions without interfering with each other, resolving the contradiction between device complexity and measurement precision.
Solution Approach 2:
Each receiver chain is designed to be multi-functional, capable of performing both data reception and RRM measurements. This universality allows the system to dynamically allocate receiver chains to different tasks based on current needs, improving measurement precision while maintaining manageable device complexity through resource sharing.
2Device complexity
If single receiver chain performs both data reception and RRM measurements, then device complexity is reduced, but measurement latency increases
Solution Approach 1:
While one receiver chain performs RRM measurements, another chain continuously receives data without interruption. This continuity ensures that data reception does not pause during measurements, and measurements can be performed in real-time, reducing measurement latency while maintaining a relatively simple receiver architecture.
Solution Approach 2:
The receiver is segmented into multiple independent chains that can operate simultaneously and independently. This parallel processing capability eliminates the sequential execution bottleneck where a single chain would need to switch between data reception and measurements, significantly reducing measurement latency.
3Adaptability or versatility
If receiver switches between data reception and measurement modes, then adaptability is improved, but productivity decreases due to mode switching overhead
Solution Approach 1:
The receiver is divided into multiple independent chains, each capable of operating in its own mode without requiring others to switch. This eliminates mode switching overhead entirely, as each chain maintains its operational state independently, preserving both adaptability and productivity.
Solution Approach 2:
Multiple receiver chains are pre-configured and ready to operate simultaneously in different modes. This preliminary preparation eliminates the need for dynamic mode switching during operation, as the system can directly allocate pre-configured chains to different tasks, maintaining high productivity while providing adaptability.
4Measurement precision
If multi-Rx chain architecture is implemented, then measurement precision and spherical coverage are improved, but device complexity increases
Solution Approach 1:
The receiver is segmented into multiple independent chains that can be independently controlled and configured. This modular segmentation allows the system to achieve improved measurement precision through parallel processing while managing device complexity through independent, standardized chain designs that can be replicated and configured flexibly.
Data Source
AI summary
An apparatus may be configured to: receive PDSCH with a plurality of layers from at least two network nodes; receive at least one DCI, wherein the at least one DCI is configured to schedule at least one layer during a measurement window using, at least, a first transmission configuration indication and a second transmission configuration indication, wherein the first transmission configuration indication is associated with a first network node of the at least two network nodes, wherein the second transmission configuration indication is associated with a second network node of the at least two network nodes; during the measurement window, perform at least one measurement; and during the measurement window, receive or transmit with the at least one layer, wherein a number of layers of the at least one layer is less than a number of layers of the plurality of layers received outside of the measurement window.