PDCCH Blind Decoding Adjustment for Cell DTX States
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Solution Overview
Problem
In wireless communication systems, the inefficiency of blind decoding operations due to cell discontinuous transmission (DTX) states leads to increased network and UE power consumption and latency, as the quantity of PDCCH blind decoding operations is not adjusted based on the DTX state of component carriers, resulting in wasted efforts and suboptimal resource utilization.
Innovation Solution
Adjusting the quantity of PDCCH blind decoding operations for component carriers based on their DTX states through an indication mechanism, applying splitting factors to optimize decoding efforts in active and inactive states, thereby reducing unnecessary decoding and conserving energy and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the quantity of PDCCH blind decoding operations is not adjusted based on cell DTX state, then the decoding coverage is maintained, but power consumption and latency increase
Solution Approach 1:
The patent applies dynamics by making the quantity of PDCCH blind decoding operations adjustable based on the cell DTX state. The network node dynamically configures different decoding quantities for active and inactive component carriers, allowing the system to adapt its behavior to current operational conditions rather than using a fixed decoding approach
Solution Approach 2:
The patent changes the parameter of blind decoding quantity based on the DTX state of component carriers. By receiving indications of cell DTX state and adjusting the decoding quantity accordingly (e.g., reducing decodes for inactive carriers), the system optimizes power consumption while maintaining necessary decoding coverage for active carriers
2Reliability
If the quantity of PDCCH blind decoding operations is increased for inactive component carriers, then decoding coverage is maintained, but latency increases
Solution Approach 1:
The patent applies partial action by performing blind decoding operations only to the extent necessary for active component carriers. By reducing or eliminating blind decodes for inactive carriers, the system performs just enough decoding to maintain reliability for active services while avoiding excessive decoding that would increase latency
3Ease of operation
If blind decoding operations are performed for all component carriers regardless of DTX state, then resource utilization is simplified, but energy expenditure increases
Solution Approach 1:
The patent applies local quality by treating active and inactive component carriers differently in terms of blind decoding operations. Instead of applying a uniform decoding approach across all carriers, the system applies different decoding quantities locally to each carrier based on its DTX state, optimizing energy expenditure while maintaining operational simplicity through standardized configuration mechanisms
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain an indication to adjust a quantity of physical downlink control channel (PDCCH) blind decoding operations for a first component carrier in accordance with a cell discontinuous transmission (DTX) state of the first component carrier or a cell DTX state of a second component carrier. The UE may perform PDCCH blind decoding in accordance with the indication. Numerous other aspects are described.