DCI Size Alignment for Wireless Throughput and Latency
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Solution Overview
Problem
The increasing number of user equipment (UEs) and the growing demand for data throughput in wireless communication systems pose challenges in efficiently managing limited radio resources, particularly in terms of latency and reliability.
Innovation Solution
A method for a base station (BS) to efficiently transmit downlink control information (DCI) by aligning the sizes of new and legacy UL/DL DCI formats with specific DCI sizes, establishing an RRC connection, and transmitting DCI based on these aligned sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of UEs and data throughput demand increase, then communication capacity requirements improve, but radio resource management complexity and latency worsen
Solution Approach 1:
The patent segments DCI formats into new and legacy types with different size alignment rules. New DCI formats (0_1, 1_1) are aligned to a first DCI size while legacy formats (0_0, 1_0) are aligned to a second DCI size. This segmentation allows the system to handle different UE requirements separately, improving throughput for capable UEs while maintaining compatibility with legacy UEs, thereby reducing overall system latency without overwhelming resource management complexity.
Solution Approach 2:
The patent introduces dynamic DCI size alignment where the BS can selectively apply first DCI size alignment for new formats and second DCI size alignment for legacy formats based on UE capability and service requirements. This dynamic approach enables flexible resource allocation that adapts to varying throughput demands while preventing latency accumulation from rigid formatting requirements.
2Productivity
If new DCI formats are introduced to support higher throughput, then data capacity improves, but device complexity and processing overhead worsen
Solution Approach 1:
The patent changes the size parameter of DCI formats by introducing two distinct alignment sizes (first DCI size for new formats, second DCI size for legacy formats). This parameter change allows new DCI formats to carry more information for higher data capacity while maintaining a separate, simpler alignment regime for legacy formats, thereby managing device complexity through parameter differentiation rather than structural complexity.
Solution Approach 2:
The patent creates a universal DCI sizing framework that serves multiple functions: it supports both new and legacy DCI formats, accommodates different UE capabilities, and enables flexible resource allocation. The first DCI size serves new formats requiring higher capacity, while the second DCI size serves legacy formats, creating a multi-functional sizing system that reduces overall device complexity by providing clear, role-specific parameters.
3Adaptability or versatility
If DCI format sizes are aligned to maintain compatibility, then legacy UE support improves, but new service requirements and throughput potential worsen
Solution Approach 1:
The patent segments DCI size alignment into two distinct regimes: second DCI size for legacy formats ensuring backward compatibility, and first DCI size for new formats enabling advanced services. This segmentation allows the system to simultaneously support legacy UEs with traditional throughput requirements and new services demanding higher capacity, resolving the contradiction between compatibility and throughput potential.
Solution Approach 2:
The patent applies different size alignment qualities to different DCI format types. Legacy DCI formats (0_0, 1_0) receive second DCI size alignment optimized for compatibility, while new DCI formats (0_1, 1_1) receive first DCI size alignment optimized for new service throughput. This local quality differentiation ensures each format type receives the appropriate sizing treatment for its specific function, balancing legacy support with new service capabilities.
Data Source
AI summary
A user equipment that has performed a random access procedure with respect to a base station may determine a DCI size to be monitored based on DCI size alignment and the base station may determine a DCI size to be used based on the DCI size alignment. The DCI size alignment may include aligning the size of a legacy UL DCI format and the size of a legacy DL DCI format after aligning the size of a new UL DCI format and the size of a new DL UCI format. Each of the new UL DCI format and the legacy UL DCI format is a DCI format used to schedule a physical uplink shared channel (PUSCH), and each of the new DL DCI format and the legacy DL DCI format is a DCI format used to schedule a physical downlink shared channel (PDSCH).