Dynamic PDCCH Configuration for 5G Terminal Power Reduction
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Solution Overview
Problem
In 5G NR access technology systems, terminal devices experience high power consumption due to the need to monitor multiple configurations of physical downlink control channels (PDCCH) across various control resource sets, search spaces, and aggregation levels, leading to increased blind detection and power usage.
Innovation Solution
A method and apparatus that generate dynamic signaling based on terminal device state information, allowing the base station to adjust the configuration of search spaces, reducing the number of blind detections by indicating a subset of configuration information, thereby optimizing power consumption and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device monitors multiple configurations of PDCCH across various control resource sets, search spaces, and aggregation levels to ensure reliable control channel reception, then the reliability of control channel monitoring is improved, but the power consumption of the terminal device increases
Solution Approach 1:
The patent implements dynamic adjustment of PDCCH monitoring configurations based on terminal device states. The base station receives state information from the terminal device and dynamically configures monitoring parameters including control resource set indicators, search space indicators, and aggregation level indicators. This dynamic configuration allows the terminal to monitor only necessary PDCCH candidates rather than all possible configurations, significantly reducing blind detection operations and power consumption while maintaining reliable control channel reception when needed.
2Reliability
If the terminal device performs blind detection on multiple PDCCH candidate sets corresponding to multiple control resource sets, search spaces, and aggregation levels to ensure complete coverage, then the completeness of control channel detection is improved, but the number of blind detection operations increases
Solution Approach 1:
The patent applies local quality by configuring different monitoring parameters for different terminal device states. Based on the terminal's service requirements and channel conditions, the base station selectively activates specific control resource sets, search spaces, and aggregation levels. This means the terminal performs blind detection only on relevant PDCCH candidate sets corresponding to its current state, rather than uniformly monitoring all possible configurations. The local optimization of monitoring parameters for each state significantly reduces the total number of blind detection operations while ensuring complete coverage for the terminal's actual needs.
3Reliability
If the base station configures multiple search spaces with multiple aggregation levels for the terminal device to ensure robust control channel delivery, then the robustness of control channel transmission is improved, but the complexity of configuration information increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple search spaces with different aggregation levels and control resource sets during the initial connection setup or reconfiguration phases. These pre-configured parameters are stored in the terminal device and can be quickly activated based on state changes. When the terminal's service requirements or channel conditions change, the base station simply indicates which pre-configured parameters to use through compact signaling, rather than transmitting full configuration details. This approach maintains transmission robustness through multiple configured options while significantly reducing the complexity of dynamic configuration management.
Data Source
AI summary
Disclosed are a method and apparatus for transmitting configuration information of a physical downlink control channel. The method comprises: acquiring state information of a terminal device, and generating dynamic signaling according to the state information of the terminal device, wherein the state information of the terminal device comprises service state information of the terminal device or channel state information of the terminal device; and sending the dynamic signaling to the terminal device, the dynamic signaling being used to indicate first configuration information of a search space, wherein the first configuration information is used to indicate that the terminal device monitors a physical downlink control channel (PDCCH). The technical problem of high power consumption of a terminal device in the prior art is solved.