UE Receiving Bandwidth Alignment for Limited-Bandwidth 5G Control
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Solution Overview
Problem
Existing 5G/NR networks face challenges in supporting compact, low-complexity devices with reduced size and extended battery life, particularly in industrial wireless sensor networks and smart city applications, due to limitations in bandwidth alignment and resource configuration methods, leading to reception performance loss and incorrect signal detection.
Innovation Solution
A method for user equipment (UE) that determines the location of a receiving bandwidth based on synchronization signal block (SSB) and control resource set (CORESET) configurations, adjusting bandwidth alignment to overlap with CORESET, and optimizing resource parameters for PDCCH reception, enabling efficient signal acquisition within limited bandwidth capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the existing air interface resource configuration method and channel transmission method are used, then the system can support basic 5G services, but the terminal apparatus cannot meet constraint conditions such as smaller size, lower processing complexity, less antennas, and smaller bandwidth
Solution Approach 1:
The patent segments the downlink control information into two parts: first downlink control information carried by a first physical downlink control channel within the terminal's reception capability, and second downlink control information carried by a second physical downlink control channel. This segmentation allows the terminal to receive critical control information within its limited bandwidth and processing capabilities, while the network can transmit additional control information through other channels, thus resolving the contradiction between device complexity constraints and service reception capability.
2Device complexity
If the terminal apparatus is designed with smaller size and lower complexity, then the apparatus can meet industrial sensor and wearable device requirements, but the communication capability and processing power are reduced
Solution Approach 1:
The patent applies local quality by configuring the first physical downlink control channel with specific parameters (bandwidth, time resources, frequency location) that are optimized for the terminal's actual reception capabilities. The network configures control resource sets and search spaces tailored to the terminal's bandwidth limitations, ensuring that the most critical control information is transmitted in a manner that the simplified terminal can efficiently process, thus maintaining communication capability despite reduced device complexity.
Solution Approach 2:
The patent enables dynamic adaptation by allowing the network to flexibly configure the first and second physical downlink control channels based on terminal capabilities and service requirements. The system can dynamically adjust which control information is transmitted through which channel, optimizing the balance between terminal complexity constraints and communication performance for different service scenarios such as industrial sensors, video surveillance, and wearable devices.
Data Source
AI summary
Provided in the present invention is a method performed by user equipment (UE), the method including: determining a location of a receiving bandwidth according to a configuration parameter; and receiving a signal within the receiving bandwidth, the configuration parameter including a bandwidth location of a synchronization signal block (SSB) and/or a bandwidth location of a control resource set (CORESET).