Resource Allocation Granularity Adaptation for Wireless Signaling
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Solution Overview
Problem
Current wireless systems face inefficiencies in resource allocation, particularly in LTE and 5G networks, where increased resource allocation granularity leads to wasted resources due to incompatible RBG sizes between short TTI and legacy TTI, and overlapping bandwidth parts with different RBG sizes, resulting in inefficient multiplexing and resource wastage.
Innovation Solution
Implementing a method where user equipment determines different resource allocation granularities for starting and ending resource blocks, with a DCI message indicating a resource indication value, offset, and truncation indication to align resource allocations with either finer or coarser granularities, allowing for flexible resource allocation and reuse of resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resource allocation granularity is increased to support short TTI and legacy TTI with different RBG sizes, then scheduling flexibility is improved, but resource wastage increases due to incompatible RBG sizes
Solution Approach 1:
The patent applies local quality by using different resource allocation granularities for different parts of the resource allocation. Specifically, the starting resource block is indicated with a first granularity (coarser, for legacy TTI compatibility) while the ending resource block is indicated with a second granularity (finer, for short TTI support). This allows the system to accommodate both legacy TTI and short TTI scheduling requirements simultaneously, improving scheduling flexibility without causing resource wastage throughout the entire allocation.
Solution Approach 2:
The patent segments the resource allocation indication into two distinct parts: a starting resource block indication and an ending resource block indication, each with different granularities. This segmentation allows independent optimization of each part - the start uses coarser granularity for compatibility while the end uses finer granularity for precision, resolving the contradiction between flexibility and wastage.
2Adaptability or versatility
If different RBG sizes are used for short TTI and legacy TTI, then scheduling flexibility is improved, but device complexity increases due to overlapping bandwidth parts with different RBG sizes
Solution Approach 1:
The patent applies local quality by assigning different granularities to different parts of the resource allocation indication. The starting resource block uses a first granularity that is coarser, which simplifies processing for legacy TTI, while the ending resource block uses a second granularity that is finer, enabling short TTI scheduling. This localized differentiation maintains system flexibility without uniformly increasing complexity across the entire system.
Solution Approach 2:
The patent introduces dynamic granularity selection where the resource allocation indication adapts its precision based on the specific scheduling requirements. The system dynamically determines whether to use the first (coarser) or second (finer) granularity for the ending resource block based on the TTI type being scheduled, allowing flexible adaptation without fixed complex infrastructure.
3Ease of manufacture
If resource allocation uses fixed granularity, then signaling simplicity is maintained, but network resource utilization decreases due to inability to optimize bit usage
Solution Approach 1:
The patent makes the resource allocation indication dynamic by allowing the ending resource block to be indicated with a second granularity that is finer than the first granularity used for the starting resource block. This dynamic granularity adjustment enables the system to optimize bit usage according to actual scheduling needs, improving network resource utilization while maintaining signaling simplicity through a structured two-granularity approach.
Solution Approach 2:
The patent changes the granularity parameter of the resource allocation indication based on the scheduling requirements. By allowing the ending resource block to use a finer granularity than the starting resource block, the system can optimize the bit allocation for resource indication, improving network resource utilization without fundamentally changing the signaling structure.
Data Source
AI summary
According to an example of an embodiment, a method is provided including transmitting, from a base station to a user equipment, at least one message indicative of a starting resource and an ending resource of a resource allocation, wherein the at least one message comprises: a resource indication value indicating an index of the starting resource corresponding to either a first resource allocation granularity or a second resource allocation granularity different from the first resource allocation granularity, a number of contiguously allocated resources following the starting resource, and at least one of: an offset value related to the first resource allocation granularity; and a truncation indication for indicating whether the user equipment is to truncate the resource allocation; and communicating, by the base station, data in accordance with the starting resource and the ending resource.