Configured Grant Uplink Bitmap Signaling for Unused Resource Release
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Solution Overview
Problem
Existing communication systems face inefficiencies in managing configured grant uplink resources due to variable packet sizes, leading to unused capacity and increased signaling overhead, particularly in applications like extended reality (XR) where data transmission is bursty.
Innovation Solution
Implementing a dynamic indication mechanism using a bitmap to indicate unused configured grant uplink resources, allowing UEs to dynamically report which resources they will not use, enabling more efficient resource allocation and reducing unnecessary reservations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If configured grant uplink resources are reserved for variable packet sizes, then transmission capacity is improved, but unused resources are wasted leading to reduced resource utilization
Solution Approach 1:
The patent implements dynamic indication mechanisms where UEs can signal to the network whether they will use or not use configured grant resources. This allows the resource allocation to adapt dynamically to actual transmission needs, transforming static resource reservations into dynamic allocations that match variable packet sizes in XR applications.
Solution Approach 2:
The patent changes the state of resource allocation from fixed to variable by introducing indication parameters. UEs transmit indication information (such as bitmap fields) that change the network's understanding of resource usage status, enabling the system to adjust resource utilization based on actual data transmission requirements rather than static reservations.
2Productivity
If configured grant resources are allocated for bursty XR traffic, then transmission capacity is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts only the essential information needed for resource indication by using compact bitmap fields within uplink transmissions. Instead of extensive signaling messages, the UE includes a concise indication (e.g., 1 bit or small bitmap) that directly conveys resource usage status, removing unnecessary signaling overhead while maintaining accurate resource tracking.
Solution Approach 2:
The patent uses partial indication mechanisms where UEs only signal about resources they will not use, rather than providing complete resource allocation information. This partial action approach reduces signaling overhead by focusing only on the subset of resources that need explicit indication, rather than managing all configured grant resources through detailed signaling.
3Device complexity
If unused configured grant resources are not identified, then resource allocation simplicity is maintained, but resource utilization efficiency decreases
Solution Approach 1:
The patent implements a feedback mechanism where UEs provide indication information back to the network about their resource usage intentions. The network uses this feedback to identify unused configured grant resources and can then reallocate them to other UEs or purposes, creating a closed-loop system that continuously optimizes resource utilization based on actual transmission needs.
Solution Approach 2:
The patent enables the system to automatically identify and reallocate unused resources through the indication mechanism. The network autonomously processes the UE's indication information and performs resource reallocation without requiring manual intervention or complex centralized management, allowing the system to self-optimize resource utilization based on reported usage patterns.
Data Source
AI summary
There is provided an apparatus comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to receive, from an access node, an information indicating configured grant uplink resources for performing uplink data transmission to the access node; receive, from the access node, configuration information indicating a number of bits; transmit, to the access node, a dynamic indication comprising a bitmap of a length specified by the number of bits indicated by the configuration information, said bitmap indicating subsequent configured grant uplink resources which the apparatus will not use as unused configured uplink grant resources; and transmit, to the access node, a new dynamic indication, wherein the new dynamic indication cannot claim back unused configured grant uplink resources.