Terminal PDCCH Detection Configuration for Power Saving
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Solution Overview
Problem
In 5G mobile communications, terminal devices face high power consumption due to continuous blind detection on candidate physical downlink control channels (PDCCH), limiting battery life, and existing power saving mechanisms like C-DRX offer limited flexibility in balancing power consumption with service delay.
Innovation Solution
Configuring multiple configuration parameter sets for terminal devices, each with varying detection periods and resource settings, allowing the device to switch between them to reduce power consumption and maintain detection performance, with nested settings ensuring seamless transitions and minimizing missed detections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device performs continuous blind detection on candidate PDCCH to ensure reliable control channel reception, then the detection reliability is improved, but the power consumption increases significantly
Solution Approach 1:
The patent applies dynamics by making the detection configuration adjustable and switchable. Multiple configuration parameter sets are defined with different detection characteristics, and the terminal can dynamically switch between them based on service requirements, transforming the static detection mechanism into a dynamic one that adapts to different operational states
Solution Approach 2:
The patent changes detection parameters by introducing multiple configuration parameter sets with varying detection periods, bandwidth parts, and search space parameters. This allows the system to modify detection behavior through parameter adjustment rather than maintaining a fixed detection mode, enabling flexibility in balancing reliability and power consumption
2Use of energy by moving object
If the terminal device reduces detection frequency to save power, then power consumption is reduced, but the service delay increases
Solution Approach 1:
The patent enables dynamic adjustment of detection characteristics through multiple configuration parameter sets. The terminal can switch between different detection modes with varying periods and resources, allowing the system to optimize the balance between power consumption and service delay based on real-time service requirements rather than being constrained to a fixed detection schedule
Solution Approach 2:
The patent segments the detection configuration into multiple independent parameter sets, each optimized for different operational scenarios. This segmentation allows the terminal to select appropriate detection configurations for different service types, enabling fine-grained control over the trade-off between power consumption and service delay
3Use of energy by moving object
If the terminal device switches between configuration parameter sets to reduce power consumption, then power consumption is reduced, but the complexity of configuration management increases
Solution Approach 1:
The patent manages configuration complexity through dynamic indication mechanisms. The network device can indicate which configuration parameter set to use through downlink control information, allowing the terminal to automatically switch configurations without complex manual management. This dynamic indication simplifies the user side while maintaining multiple configuration options
Solution Approach 2:
The patent creates a universal configuration framework where multiple parameter sets follow a standardized structure with common parameter types (bandwidth part, search space, detection period). This universal structure allows the system to manage multiple configurations through consistent rules and procedures, reducing the complexity that would otherwise arise from heterogeneous configuration formats
4Ease of operation
If the terminal device uses a single configuration parameter set for PDCCH detection, then the configuration management is simple, but the flexibility in balancing power consumption with detection performance is limited
Solution Approach 1:
The patent segments the configuration into multiple parameter sets that can be independently optimized for different scenarios. Each set contains the necessary detection parameters, allowing the system to maintain simple management within each segment while gaining flexibility through the collection of segments. The terminal can select appropriate segments based on service requirements
Solution Approach 2:
The patent introduces dynamic switching capability between configuration parameter sets through network indication. This allows the system to transition from a static single-configuration model to a dynamic multi-configuration model, where the terminal can adapt its detection behavior based on network instructions while maintaining operational simplicity through automated switching
Data Source
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AI summary
A communication method, a device, and an apparatus are provided. A network device determines N configuration parameter sets configured for a terminal device, where each of the N configuration parameter sets includes a parameter for detecting a candidate downlink control channel, and N is an integer greater than or equal to 2. The network device sends information about the N configuration parameter sets to the terminal device. Each of the N configuration parameter sets includes at least one of the following parameters: a bandwidth part, a search space parameter, a candidate downlink control channel detection period, a control resource set parameter, and a time domain resource set corresponding to the candidate downlink control channel. The network device may configure the N configuration parameter sets for the terminal device. For example, when the terminal device uses two of the N configuration parameter sets, corresponding power consumption of detecting a candidate downlink control channel may be different. Therefore, power consumption of the terminal device can be reduced, and a service life of the terminal device can be prolonged.