Base Station DDDS Cycle Adjustment for Processor Load Reduction
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Solution Overview
Problem
In dual connectivity scenarios, the frequent Downlink Data Delivery Status (DDDS) procedure consumes significant resources in base stations, potentially limiting user plane transmission rates due to the high number of bearers, especially when base stations have insufficient processing capacity.
Innovation Solution
The proposed solution involves adjusting the cycle of requesting DDDS reports based on the status report from the adjacent base station, allowing for reduced frequency of DDDS reports and distributing the processing load in the time domain, thereby reducing processor resource consumption and improving user throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the DDDS procedure is performed frequently for each bearer, then the status estimation accuracy is improved, but the processor resource consumption increases
Solution Approach 1:
The patent implements periodic DDDS report requests at adjustable cycles rather than continuous monitoring. The base station can configure the reporting cycle to balance between status estimation accuracy and processor resource consumption, allowing the system to sample status information at optimal intervals rather than continuously.
Solution Approach 2:
The patent introduces dynamic adjustment of the DDDS report request cycle based on transmission conditions. When transmission is stable, the cycle can be extended to reduce processing load. When transmission status changes or quality deteriorates, the cycle is shortened to improve status estimation accuracy, making the monitoring frequency adaptive rather than fixed.
2Measurement precision
If the DDDS procedure is performed for each bearer, then the flow control accuracy is improved, but the user plane transmission rate is limited
Solution Approach 1:
By implementing periodic DDDS reporting instead of continuous monitoring for each bearer, the system maintains sufficient flow control accuracy through strategically timed status samples while freeing up processor resources for user plane data processing, thereby improving transmission rate.
Solution Approach 2:
The patent changes the parameter of report request cycle dynamically based on transmission conditions. Under stable conditions, the cycle is extended to reduce processing overhead and improve user plane throughput. When transmission quality deteriorates, the cycle is shortened to maintain accurate flow control, thus optimizing the balance between control accuracy and transmission productivity.
3Adaptability or versatility
If the number of bearers increases, then the system capacity is improved, but the processing capacity requirement increases
Solution Approach 1:
The periodic DDDS reporting mechanism allows the base station to manage multiple bearers more efficiently. Instead of continuously monitoring each bearer, the system samples status information at configured intervals, reducing the cumulative processing load across all bearers while maintaining system capacity to accommodate numerous bearers.
Solution Approach 2:
The dynamic cycle adjustment allows the system to adapt the monitoring intensity based on actual transmission conditions across different bearers. This enables the base station to maintain accurate flow control for many bearers when needed while reducing processing requirements during stable periods, thus supporting higher system capacity without proportionally increasing processing capacity requirements.
Data Source
AI summary
A base station device includes a processor and transmits data to a terminal using an adjacent base station. The processor transmits, to the adjacent base station at a specified cycle, a report request that requests a status report indicating a status of a data transmission from the adjacent base station to the terminal. The processor controls a data transmission to the adjacent base station based on the status report received from the adjacent base station. The processor changes the cycle of transmitting the report request to the adjacent base station based on a change in the status indicated by the status report.