Dynamic Wireless Resource Scheduling With TDRA Slot Mapping
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, the dynamic scheduling modes like one-scheduling-more mode face challenges with inaccurate resource allocation due to limited bits in DCI signaling, leading to misunderstandings between User Equipment (UE) and the base station, and increased signaling overhead.
Innovation Solution
The proposed techniques involve accurate determination of transmission resources by using time domain resource allocation (TDRA) fields in signaling messages, which include offsets to identify valid slots for transmissions, and higher layer signaling to confirm slot validity, ensuring efficient resource utilization without additional signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If one-scheduling-more mode is used to reduce signaling overhead, then signaling overhead is reduced, but resource allocation accuracy deteriorates due to limited bits in DCI signaling
Solution Approach 1:
The patent segments the resource allocation information into two parts: (1) time domain resource allocation (TDRA) fields in DCI signaling that provide offset information, and (2) higher layer signaling that provides the mapping between TDRA field values and actual resource positions. This segmentation allows compact DCI signaling while maintaining accurate resource allocation through the two-stage information provision.
Solution Approach 2:
The patent uses higher layer signaling to pre-configure the mapping relationship between TDRA field values and time domain resource positions before actual transmission. This preliminary configuration enables the DCI signaling to use compact offset values that reference pre-established resource patterns, reducing the bits needed in DCI while maintaining allocation accuracy.
2Loss of substance
If compact DCI signaling is used to reduce overhead, then signaling overhead is reduced, but misunderstandings between UE and base station increase due to ambiguous resource identification
Solution Approach 1:
The patent introduces higher layer signaling as an intermediary that bridges the compact DCI signaling and the actual resource allocation. The higher layer signaling provides the reference framework that disambiguates the compact offset values in DCI, ensuring that both the base station and UE interpret the resource allocation identically without misunderstandings.
Solution Approach 2:
By pre-configuring the mapping relationships through higher layer signaling before dynamic scheduling, the system establishes a shared understanding of resource positions. This preliminary action ensures that when compact DCI signaling is used, both transmitter and receiver have identical interpretations of the resource identifiers, eliminating ambiguities.
Data Source
AI summary
Methods, apparatus, and systems that enable accurate dynamic resource indication are disclosed. In one example aspect, a method for wireless communication includes receiving, by a terminal, a first signaling message from a first network device. The first signaling message includes a time domain resource allocation (TDRA) field that maps to at least one group of time domain resource information that includes an offset for determining a first transmission resource for a first transmission between the terminal and the first network device. The method also includes performing, by the terminal, the first transmission with the first network device using the first transmission resource. a position of the first transmission resource is determined according to at least one valid slot in a plurality of slots identified using a starting point associated with the first signaling message and the offset in the first signaling message.