BWP Indication in Fixed-Bit DCI for Lower Blind Detection Load
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Solution Overview
Problem
The high detection complexity and power consumption associated with BWP switching in terminal devices due to the detection of a large quantity of DCI formats during 5G NR communication services like eMBB, URLLC, and mMTC are not conducive to power saving.
Innovation Solution
Implementing a control information transmission method where the quantity of bits in DCI for indicating BWP is fixed, reducing the number of blind detections and detection complexity, thereby lowering power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the terminal device performs blind detection on multiple DCI formats with different quantities of bits for BWP indication, then the BWP switching capability is achieved, but the detection complexity and power consumption increase
Solution Approach 1:
The patent changes the parameter of DCI bit quantity from variable to fixed. Specifically, it uses a first DCI format with a first quantity of bits for BWP indication, and a second DCI format with a second quantity of bits that is different from the first. This parameter differentiation allows the terminal to identify and detect only relevant DCI formats, reducing blind detection complexity while maintaining BWP switching capability.
Solution Approach 2:
The patent segments the DCI formats into at least two distinct types based on their bit quantities. The terminal device is configured to detect DCI formats of a specific type (with a specific bit quantity), thereby dividing the detection task from examining all possible DCI formats to only examining a subset. This segmentation reduces the search space and detection complexity.
2Adaptability or versatility
If the terminal device performs blind detection on multiple DCI formats with different quantities of bits, then BWP switching is supported, but power consumption increases
Solution Approach 1:
By changing the DCI format parameter (bit quantity) to have distinct values for different formats, the terminal can efficiently filter and identify applicable DCI formats without exhaustive blind detection. This reduces the processing energy required while maintaining full BWP switching functionality.
Solution Approach 2:
The segmentation of DCI formats into distinct bit-quantity groups enables the terminal to focus detection efforts only on relevant formats. This reduces the overall detection operations required, thereby lowering power consumption while preserving BWP switching adaptability.
3Adaptability or versatility
If the quantity of bits in DCI for BWP indication varies, then flexible BWP configuration is achieved, but the number of blind detection times increases
Solution Approach 1:
The patent introduces distinct bit quantity parameters for different DCI formats. The terminal is configured to detect DCI formats with a specific bit quantity, which reduces the number of blind detection attempts needed. This parameter-based differentiation maintains flexible BWP configuration while significantly reducing detection time.
Solution Approach 2:
By segmenting DCI formats based on bit quantity, the patent creates distinct detection categories. The terminal only needs to perform blind detection on DCI formats matching its configured bit quantity, thereby reducing the total number of detection operations and time required, while still supporting flexible BWP configuration through the use of multiple DCI formats.
Data Source
AI summary
This application provide a control information transmission method, an apparatus, and a system. One example method includes: A first terminal device receives, from a network device, DCI used for indicating a BWP. A quantity of bits in the DCI is a fixed quantity of bits. The DCI is used for scheduling a physical data channel. The BWP is used to transmit the physical data channel.