Time-Domain Resource Allocation Table Selection for Wireless Scheduling
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Solution Overview
Problem
The existing New Radio (NR) technology is limited by using a single time-domain resource allocation table, which restricts scheduling flexibility and requires an increased DCI size to accommodate more allocations, leading to inefficiencies in resource management.
Innovation Solution
Implementing multiple time-domain resource allocation tables in wireless devices, where the selection of the appropriate table is implicitly derived from various information sources, such as RNTI, DCI format, and transmission type, allowing for explicit bit field selection in DCI to determine resource allocations without increasing DCI size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single time-domain resource allocation table is used, then the device complexity is reduced, but the scheduling flexibility and adaptability are limited
Solution Approach 1:
The patent divides the single resource allocation table into multiple separate tables (e.g., first time-domain resource allocation table, second time-domain resource allocation table), each optimized for specific scheduling scenarios. This segmentation allows the system to select the most appropriate table based on transmission requirements, thereby improving scheduling flexibility without requiring all possible allocation types to be present in one large table.
Solution Approach 2:
The patent introduces dynamic table selection mechanisms where the appropriate resource allocation table is chosen based on real-time scheduling conditions, transmission types, and service requirements. This dynamic approach enables the system to adapt to varying scheduling needs without permanently increasing the complexity of maintaining all possible allocation configurations simultaneously.
2Adaptability or versatility
If the resource allocation table size is increased to enable more time-domain resource allocations, then the adaptability is improved, but the DCI size increases
Solution Approach 1:
Instead of expanding a single resource allocation table which would require more DCI bits for indexing, the patent segments resources into multiple smaller tables. Each table can be independently indexed with fewer bits, and the table selection itself is indicated through existing DCI fields or higher-layer signaling, thus achieving comprehensive resource allocation capability without proportionally increasing DCI size.
Solution Approach 2:
The patent adds a new dimension to resource allocation by introducing multiple tables along the table selection dimension, rather than simply expanding the size of a single table. This dimensional change allows the system to achieve comprehensive coverage of resource allocation scenarios while keeping individual table sizes manageable and DCI overhead controlled through efficient table indexing and selection mechanisms.
Data Source
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AI summary
According to certain embodiments, a method performed by a wireless device for determining a time-domain resource allocated to the wireless device by a network node for a scheduled transmission in downlink is provided. The method comprises obtaining first information available to both the wireless device and the network node, and selecting a time-domain resource allocation table from multiple different time-domain resource allocation tables based on the first information. The method further comprises determining a time-domain resource allocation entry within the selected time-domain resource allocation table based on a time-domain resource allocation field in a downlink control information, DCI, received from the network node, wherein the first information is distinct from information in the time-domain resource allocation field of the DCI.