Configured Grant Termination Indication for Uplink Latency
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in managing configured grants for physical uplink channels, leading to unnecessary resource waste and increased latency due to the lack of clear termination indications, particularly in scenarios like extended reality applications.
Innovation Solution
Implementing a termination indication mechanism that allows user equipment to transmit data symbols only up to a certain point within the scheduled configured grant physical resource blocks, with a specific termination symbol or value indicating the end of data transmission, enabling the network entity to stop decoding prematurely and conserve resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network entity decodes all scheduled symbols in configured grant physical resource blocks, then complete data reception is ensured, but processing overhead and latency increase unnecessarily when data terminates early
Solution Approach 1:
The patent applies preliminary action by inserting a termination indication symbol before the actual data termination point. This allows the network entity to be预先 notified of the upcoming data end, so it can prepare to stop decoding at the exact termination point without continuing to process unnecessary symbols, thus reducing latency while ensuring complete data reception.
Solution Approach 2:
The termination indication symbol acts as feedback from the user equipment to the network entity, informing the network entity about the actual data termination position. This feedback mechanism enables the network entity to adjust its decoding operation dynamically, stopping exactly when data ends rather than processing all scheduled symbols, thereby reducing unnecessary processing overhead and latency.
2Quantity of substance
If configured grant physical resource blocks are allocated for the full scheduled duration, then sufficient resources are provided for data transmission, but resource waste occurs when data terminates before the last symbol
Solution Approach 1:
The termination indication symbol provides feedback to the network entity about the actual data duration. This enables the network entity to accurately determine how many symbols actually contained data versus how many were empty or unused, allowing for precise resource accounting and optimization in future allocations, thereby reducing resource waste while maintaining sufficient allocation for actual data needs.
Solution Approach 2:
The patent changes the parameter of resource utilization by introducing a termination indication that dynamically defines the actual data boundary. This allows the system to adapt the effective resource usage parameter based on actual data length rather than fixed scheduled length, enabling more efficient resource allocation and reducing waste from over-provisioning.
3Reliability
If the network entity continues decoding past the actual data termination point, then no data loss occurs, but processing overhead increases unnecessarily
Solution Approach 1:
By providing the termination indication symbol in advance, the network entity can perform preliminary action to stop decoding exactly at the data termination point. This eliminates the need to continue decoding past the actual data end, reducing processing overhead while maintaining data integrity through the guaranteed presence of the termination indication before data ends.
Solution Approach 2:
The termination indication symbol serves as feedback that enables the network entity to dynamically adjust its decoding operation. Instead of blindly processing all scheduled symbols, the network entity uses this feedback to know precisely when to stop, thereby reducing unnecessary processing overhead while ensuring data integrity is maintained through accurate boundary detection.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configured grant (CG) for a physical uplink channel. The UE may transmit a communication using CG physical resource blocks of data symbols of a plurality of symbols scheduled by the CG and a termination indication that indicates a termination of the data symbols prior to a last symbol of the plurality of symbols scheduled by the CG. Numerous other aspects are described.