Buffer Queue Management in Split CU-DU Architecture
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Solution Overview
Problem
In scenarios where storage resources are limited, such as in a split CU-DU architecture in mobile communication technologies, conventional methods fail to efficiently manage large-scale data storage and buffering, leading to inadequate data collection and reporting capabilities.
Innovation Solution
A communication method where a first network element dynamically creates buffer queues based on requests from a second network element, determining actual sizes based on available storage space to optimize resource utilization, allowing for flexible data collection and reporting without requiring extensive local storage capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the producer relies on large-capacity local storage resources to store data, then the data storage capability is improved, but the device complexity and resource requirement increase
Solution Approach 1:
The patent extracts the storage function from the producer (DU) and relocates it to the consumer (CU) or external storage resources. The DU no longer needs to maintain large-capacity local storage, instead using minimal local buffering while relying on the CU's storage capabilities or external storage systems, thereby reducing the producer's device complexity and resource requirements while maintaining data storage capability
Solution Approach 2:
The CU serves multiple functions: it acts as both the data consumer and the primary storage resource for the system. By consolidating storage functionality in the CU, the system eliminates the need for separate large-capacity storage resources at the DU, reducing overall device complexity while maintaining universal data access capability
2Productivity
If the DU allocates larger buffer queue sizes to meet data collection requirements, then the data collection capability is improved, but the storage resource consumption increases
Solution Approach 1:
The patent implements dynamic buffer queue size allocation where the DU adjusts buffer queue sizes based on real-time storage resource availability and data collection requirements. Instead of allocating fixed large buffer sizes, the system dynamically adapts buffer dimensions, allowing the DU to maintain adequate data collection capability while optimizing storage resource consumption according to actual system conditions
Solution Approach 2:
The system implements feedback mechanisms where the DU monitors its local storage resource status and adjusts buffer queue allocations accordingly. The CU also provides feedback about available storage resources, enabling the DU to dynamically optimize buffer queue sizes to maintain data collection productivity while preventing excessive storage resource consumption
Data Source
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Figure 2B
AI summary
This application provides a communication method and apparatus. In the method, a first network element creates a buffer queue based on a request of a second network element. Further, the first network element collects data of a corresponding type, sends data in the buffer queue to the second network element, and releases corresponding storage space after the second network element completes a data collection task. In this way, utilization of storage space of the first network element is improved, thereby resolving a problem in a conventional technology that the first network element needs to have a capability of relatively large storage space.