Overlapping Downlink Scheduling for Narrowband eRedCap Reception
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently processing multiple unicast/multicast downlinks in a narrowband, particularly for reduced capability (eRedCap) UEs, which require improved methods for downlink transmission and reception to enhance processing efficiency and reduce power consumption.
Innovation Solution
The method involves receiving and decoding downlink channels with allocated physical resource blocks (PRBs) within a threshold, allowing for partial or full overlap in the time domain, and scheduling channels to ensure efficient processing by eRedCap UEs, even when exceeding the threshold, by repetitive reception in subsequent slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple downlink channels are received simultaneously in a narrowband, then the data transmission capacity is improved, but the processing complexity and power consumption increase
Solution Approach 1:
The patent segments the processing of multiple downlink channels by introducing a threshold-based classification mechanism. Channels are divided into two groups: those with PRB allocation ≤ threshold (processed by decoding) and those with PRB allocation > threshold (processed by energy detection). This segmentation resolves the contradiction by allowing multiple channels to be received while applying different processing complexities to different channel types.
Solution Approach 2:
The patent applies partial action by selectively processing only the necessary portion of each channel based on its characteristics. For channels exceeding the PRB threshold, full decoding is replaced with partial energy detection, which requires less processing effort. This allows the system to handle multiple channels without proportionally increasing processing complexity.
2Productivity
If multiple downlink channels are decoded simultaneously, then the data reception capability is improved, but the power consumption increases
Solution Approach 1:
The patent changes the processing parameter based on the PRB allocation threshold. When PRB allocation exceeds the threshold, the system switches from full decoding (high power consumption) to energy detection (low power consumption). This parameter change allows the system to maintain data reception capability for multiple channels while significantly reducing power consumption for channels with large resource allocations.
Solution Approach 2:
The patent applies partial action by performing only energy detection rather than full decoding for channels exceeding the PRB threshold. This partial processing approach maintains the ability to identify and receive relevant data while avoiding the excessive power consumption associated with complete decoding of all multiple channels.
3Productivity
If the PRB allocation threshold is set low, then the processing efficiency is improved, but the data transmission capacity is reduced
Solution Approach 1:
The patent introduces a dynamic processing approach where the processing method adapts based on the PRB allocation threshold. Channels below the threshold undergo full decoding for maximum data capacity, while channels above the threshold undergo energy detection for processing efficiency. This dynamic adaptation resolves the contradiction by optimizing each channel's processing based on its specific resource allocation.
Data Source
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AI summary
Disclosed are a method and an apparatus for communicating in a wireless communication system. A method performed by a terminal, according to one embodiment of the present disclosure, comprises the steps of: receiving a first downlink channel and a second downlink channel, in a first slot, from a base station; and decoding the first downlink channel and the second downlink channel, on the basis of the number of physical resource blocks (PRB s), which are allocated to each of the first downlink channel and the second downlink channel, being less than or equal to a first threshold value, wherein the first downlink channel and the second downlink channel may partially or totally overlap in a time domain.