DCI Bit Configuration for MTC Blind Detection
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Solution Overview
Problem
In Machine Type Communication (MTC) systems, the difference in the number of bits between uplink and downlink scheduling DCIs for multi-Transmission Block (TB) transmission leads to increased complexity and power consumption during blind detection, as different blind detection bit numbers are required for each.
Innovation Solution
The method involves configuring the uplink and downlink scheduling DCIs for multi-TB transmission to have the same number of bits by adding preset value bits to the shorter DCI, thereby allowing the same blind detection bit number to be used for both.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If different blind detection bit numbers are used for uplink and downlink scheduling DCIs, then the DCI can accurately reflect the different TB transmission capabilities, but the UE complexity and power consumption increase due to requiring multiple blind detection processes
Solution Approach 1:
The patent merges the blind detection processes for uplink and downlink scheduling DCIs by configuring both DCI formats to have the same number of bits. This allows the UE to perform a single unified blind detection process rather than separate processes for uplink and downlink, thereby reducing complexity while maintaining accurate representation of TB transmission capabilities through proper DCI field configuration
Solution Approach 2:
The patent changes the bit number parameter of the DCI by adding padding bits to the shorter DCI format (either uplink or downlink) to match the length of the longer one. This parameter adjustment enables unified blind detection while preserving the original information content through strategic placement of padding bits that do not interfere with the actual scheduling information
2Measurement precision
If different blind detection bit numbers are used for uplink and downlink scheduling DCIs, then the DCI can accurately reflect the different TB transmission capabilities, but the power consumption increases due to multiple blind detection attempts
Solution Approach 1:
The patent merges the blind detection processes for uplink and downlink scheduling DCIs by configuring both DCI formats to have the same number of bits. This allows the UE to perform a single unified blind detection process rather than separate processes for uplink and downlink, thereby reducing complexity while maintaining accurate representation of TB transmission capabilities through proper DCI field configuration
Solution Approach 2:
The patent changes the bit number parameter of the DCI by adding padding bits to the shorter DCI format (either uplink or downlink) to match the length of the longer one. This parameter adjustment enables unified blind detection while preserving the original information content through strategic placement of padding bits that do not interfere with the actual scheduling information
3Ease of operation
If padding bits are added to the shorter DCI, then the number of bits can be unified for both scheduling DCIs, but the DCI structure becomes more complex
Solution Approach 1:
The patent extracts the padding bits as a separate structural element that can be independently managed. By placing padding bits at specific positions (such as at the end of the DCI or in designated fields), the actual scheduling information remains distinct and easily identifiable, while the padding serves only to equalize the bit length without interfering with the core functional fields
Solution Approach 2:
The patent applies local quality by making different parts of the DCI structure serve different functions: the core fields contain essential scheduling information with their original bit lengths, while specific designated positions contain padding bits solely for length equalization. This localized differentiation maintains operational simplicity while achieving structural uniformity
Data Source
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AI summary
The embodiments of the present disclosure relate to a downlink control information configuration method and apparatus, and a communication device and a storage medium. The method comprises: setting the same bit number for uplink scheduling downlink control information (DCI) and downlink scheduling DCI, which are transmitted by a plurality of transmission blocks (TB).