RedCap Downlink Processing for Overlapping Signals Under Bandwidth Limits
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Solution Overview
Problem
The challenge of ensuring effective communication quality for RedCap terminals with reduced bandwidth capability when processing multiple downlink transmissions that overlap in time but not in frequency domain is unresolved in existing technologies.
Innovation Solution
A method and apparatus for determining the processing manner of downlink transmissions based on the total frequency domain resources occupied, allowing terminals to prioritize or skip transmissions according to their bandwidth capability, ensuring efficient handling of overlapping signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RedCap terminals with limited bandwidth capability receive multiple downlink transmissions that overlap in time domain but not in frequency domain, then the network can increase scheduling flexibility and resource utilization, but the terminal cannot effectively process all transmissions due to bandwidth constraints
Solution Approach 1:
The patent applies partial action by enabling the terminal to process only a subset of downlink transmissions when bandwidth constraints are exceeded. The terminal determines which transmissions to process based on priority rules (e.g., processing transmissions with higher priority or those that do not overlap in frequency domain), rather than attempting to process all received transmissions. This resolves the contradiction by allowing the network to schedule multiple transmissions (improving scheduling flexibility) while the terminal selectively processes only the necessary ones (maintaining processing capability).
Solution Approach 2:
The patent changes the parameter of transmission processing by introducing a determination mechanism that adjusts processing behavior based on bandwidth capability. When the total frequency domain resources of overlapping transmissions exceed the terminal's bandwidth capability, the terminal changes its processing parameters by selecting which transmissions to process based on priority or frequency domain characteristics. This allows the system to maintain both network scheduling flexibility and terminal processing reliability.
2Reliability
If the terminal processes all downlink transmissions regardless of bandwidth capability, then communication completeness is improved, but terminal complexity and processing burden increase
Solution Approach 1:
The patent applies partial action by enabling the terminal to process only a subset of downlink transmissions when bandwidth constraints are exceeded. The terminal determines which transmissions to process based on priority rules (e.g., processing transmissions with higher priority or those that do not overlap in frequency domain), rather than attempting to process all received transmissions. This resolves the contradiction by allowing the network to schedule multiple transmissions (improving scheduling flexibility) while the terminal selectively processes only the necessary ones (maintaining processing capability).
Solution Approach 2:
The terminal performs self-determination of which transmissions to process by evaluating its own bandwidth capability against the total frequency domain resources required. The terminal autonomously decides whether to process all transmissions or select a subset based on predefined criteria, eliminating the need for network-side intervention or complex external management. This maintains communication completeness for essential transmissions while reducing processing complexity through autonomous decision-making.
3Productivity
If the network schedules multiple downlink transmissions without considering terminal bandwidth capability, then resource utilization is improved, but communication quality deteriorates for RedCap terminals
Solution Approach 1:
The patent introduces a feedback mechanism where the terminal reports its bandwidth capability to the network, and the network uses this information to make scheduling decisions. The terminal also provides feedback on which transmissions it can successfully process, allowing the network to adjust future scheduling to better match terminal capabilities. This feedback loop enables the network to improve resource utilization by scheduling transmissions appropriately while maintaining communication quality for RedCap terminals with limited bandwidth capability.
Solution Approach 2:
The patent changes the parameter of transmission processing by introducing a determination mechanism that adjusts processing behavior based on bandwidth capability. When the total frequency domain resources of overlapping transmissions exceed the terminal's bandwidth capability, the terminal changes its processing parameters by selecting which transmissions to process based on priority or frequency domain characteristics. This allows the system to maintain both network scheduling flexibility and terminal processing reliability.
Data Source
AI summary
A downlink transmission method includes in a case that a first downlink transmission and a second downlink transmission at least partially overlap in time domain but do not overlap in frequency domain, determining, by a terminal, a processing manner of the first downlink transmission and the second downlink transmission according to whether a total quantity of frequency domain resources occupied by the first downlink transmission and the second downlink transmission is greater than a maximum bandwidth capability of the terminal, where the maximum bandwidth capability of the terminal is N, and N is less than 20 MHz.