Base Station Semi-Persistent Scheduling Resource Release
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Solution Overview
Problem
In semi-persistent scheduling (SPS) mechanisms, wireless resources are often wasted due to unsuccessful reception of pending data, leading to inefficient resource allocation and potential collisions in cellular networks, especially in VoLTE and 5G systems.
Innovation Solution
A base station and resource allocation method that periodically receives uplink data from user equipment (UE) and performs a release SPS operation when a predetermined number of specific uplink data, including pending and error data, are consecutively received, thereby ceasing further data reception and releasing the allocated resource.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base station continuously receives uplink data using SPS mechanism, then the data transmission reliability is improved, but the wireless resource waste increases due to unsuccessful reception of pending data
Solution Approach 1:
The base station performs preliminary actions by monitoring and counting consecutive failed receptions of pending data before actually releasing the SPS resource. This advance detection and counting mechanism allows the system to prepare for resource release before the waste becomes significant, resolving the contradiction by anticipating the need to stop transmission while maintaining reliability during the monitoring period.
Solution Approach 2:
The base station implements a feedback mechanism by counting the number of consecutively received pending data and comparing it against a threshold. When the threshold is exceeded, the system provides feedback to release the SPS resource. This closed-loop feedback resolves the contradiction by continuously monitoring reception success and automatically adjusting resource allocation based on actual transmission outcomes.
2Productivity
If the base station releases wireless resource after consecutive failed receptions, then the wireless resource efficiency is improved, but the risk of premature resource release increases
Solution Approach 1:
The base station performs preliminary monitoring and counting of failed receptions before triggering resource release. By establishing a threshold-based criteria in advance, the system ensures that resources are only released when there is sufficient evidence of transmission failure, preventing premature release while still improving overall resource efficiency.
Solution Approach 2:
The system provides a cushioning mechanism by requiring a certain number of consecutive failures (threshold) before releasing the resource. This cushioning period protects against premature resource release due to temporary transmission errors, ensuring that the resource is only released when the failure pattern is consistent and sustained, thus maintaining communication reliability.
3Measurement precision
If the base station monitors and counts consecutive failed receptions, then the resource allocation accuracy is improved, but the system complexity increases
Solution Approach 1:
The base station segments the resource management function into distinct components: a monitoring module that detects failed receptions, a counting module that tracks consecutive failures, and a decision module that compares the count against a threshold. This segmentation improves measurement precision by separating concerns while keeping each component simple, thus managing system complexity through functional decomposition.
Solution Approach 2:
The system implements self-service by using the base station's existing reception and processing capabilities to perform the monitoring and counting functions. Rather than introducing entirely new complex subsystems, the base station leverages its inherent ability to detect and process uplink data to automatically monitor reception success and manage resource allocation, improving accuracy without proportionally increasing complexity.
Data Source
AI summary
The disclosure provides a base station and a resource allocation method based on semi-persistent scheduling (SPS). The method includes: periodically receiving a plurality of uplink data corresponding to a user equipment (UE) on a wireless resource assigned to the UE; in response to consecutively receiving a predetermined number of specific uplink data, performing a release SPS operation to cease receiving other uplink data corresponding to the UE on the wireless resource, wherein the specific uplink data consist of pending data and error data or consist of the error data.