Service Function Chain Reconfiguration in 5G Core Networks Using Deep Learning
Bibliographic record
Abstract
Software-defined networking (SDN) and network functions virtualization (NFV) enable service providers to accommodate diversified service requests in the fifth generation (5G) core networks. Given the time-varying traffic demand of the service requests, it is crucial for service providers to embed the service function chains (SFCs) of the service requests in the network to support load balancing, and to minimize the reconfiguration overhead due to virtual network functions (VNFs) migration while satisfying their quality of service (QoS) requirements. In this paper, we study a delay-aware VNF migration problem for embedding SFCs in a network with limited processing resource capacity for NFV-enabled nodes. We formulate it as a mixed-integer nonlinear optimization problem. We decompose this problem into two subproblems for stateful VNF mapping and allocation of processing resources, where the second subproblem is a convex optimization problem. To solve the first subproblem, we propose an algorithm based on deep neural network (DNN) with attention mechanism for learning the stochastic policy of a near-optimal VNF mapping. Simulation results show that our proposed algorithm provides a solution which is very close to the optimal solution obtained by solving a mixed-integer quadratically constrained programming problem.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".