Communication Data Offsets for Aggregation-Link Traffic Smoothing
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Solution Overview
Problem
In aggregation networking scenarios, the physical bandwidth utilization of the aggregation link is low, and the requirement on the upper limit of physical bandwidth is high, leading to increased costs and delays due to peak-to-average traffic imbalances.
Innovation Solution
A communication method that determines offsets for data sending durations and time windows of multiple apparatuses to ensure that data arrival times at a central apparatus are staggered, reducing peak-to-average traffic ratios and improving bandwidth utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the switch buffer is increased to reduce the peak-to-average ratio, then the traffic smoothing capability is improved, but the switch costs, forwarding delay, delay uncertainty, and buffer overheads are increased
Solution Approach 1:
The patent applies preliminary action by pre-calculating and distributing time offsets to multiple RUs before data transmission occurs. Each RU is configured with a specific offset value that determines when its data should be sent to the DU. This proactive timing arrangement smooths traffic peaks at the aggregation link without requiring increased switch buffer capacity, as the traffic flow is regulated in advance through coordinated scheduling.
2Power
If the physical bandwidth upper limit is increased to handle peak traffic, then the peak bandwidth requirement is met, but the bandwidth utilization efficiency decreases due to low average traffic
Solution Approach 1:
The patent implements periodic action through coordinated data transmission scheduling where multiple RUs transmit data to the DU in a staggered periodic manner. By assigning different time offsets to different RUs, the system creates a periodic transmission pattern that distributes traffic peaks across different time instances. This approach maintains adequate peak bandwidth capacity while improving average bandwidth utilization, as the aggregation link experiences more consistent traffic flow rather than concentrated peaks.
3Ease of operation
If data is transmitted simultaneously by multiple RUs based on the same periodicity, then the scheduling simplicity is maintained, but the traffic peak-to-average ratio increases
Solution Approach 1:
The patent applies local quality by assigning different time offset characteristics to different RUs while maintaining the same underlying periodicity. Each RU receives a locally optimized offset value tailored to its specific timing requirements and data characteristics. This allows the system to maintain the simplicity of uniform periodic scheduling while introducing local variations in timing that distribute traffic peaks, thereby reducing the overall peak-to-average ratio without complicating the fundamental scheduling mechanism.
Data Source
AI summary
A communication method and apparatus are provided. The method includes: obtaining data sending durations of N first apparatuses and data sending time windows of the N first apparatuses in a network, where the data sending durations of the N first apparatuses are in one-to-one correspondence with the data sending time windows of the N first apparatuses, and the N first apparatuses are connected to a third apparatus in the network; and determining N offsets based on the data sending durations of the N first apparatuses and the data sending time windows of the N first apparatuses, where the N offsets are in one-to-one correspondence with the N first apparatuses, and the N offsets enable time points at which data sent by the N first apparatuses arrives at the third apparatus to be different. According to the foregoing design, a traffic peak-to-average ratio of an aggregation link between the third apparatus and a second apparatus can be reduced, and bandwidth utilization of the aggregation link can be improved.