Multi-Source Reliable Multicast Routing with QoS Constraints of NFV in Edge Computing

Abstract

Edge Computing (EC) allows processing to take place near the user, hence ensuring scalability and low latency. Network Function Virtualization (NFV) provides the significant convenience of network layout and reduces the service operation cost in EC and data center. Nowadays, the interests of the NFV layout focus on one-to-one communication, which is costly when applied to multicast or group services directly. Furthermore, many artificial intelligence applications and services of cloud and EC are generally communicated through groups and have special Quality of Service (QoS) and reliable requirements. Therefore, we are devoted to the problem of reliable Virtual Network Function (VNF) layout with various deployment costs in multi-source multicast. To guarantee QoS, we take into account the bandwidth, latency, and reliability constraints. Additionally, a heuristic algorithm, named Multi-Source Reliable Multicast Tree Construction (RMTC), is proposed. The algorithm aims to find a common link to place the Service Function Chain (SFC) in the multilevel overlay directed (MOD) network of the original network, so that the deployed SFC can be shared by all users, thereby improving the resource utilization. We then constructed a Steiner tree to find the reliable multicast tree. Two real topologies are used to evaluate the performance of the proposed algorithm. Simulation results indicate that, compared to other heuristic algorithms, our scheme effectively reduces the cost of reliable services and satisfies the QoS requirements.

QoS-Based Multicast Routing in Network Function Virtualization-Enabled Software-Defined Mobile Edge Computing Networks

“…Recently, many studies focus on multicast mechanisms in SDN [9,20] and NFV-enabled multicasting [10,21]. For instance, Chiang et al [9] proposed a dynamic group management approach, Online Branch-aware Steiner Tree (OBST).…”

“…Alhussein et al [21] presented a multicast service orchestration framework to deal with joint routing and VNF placement problem, while maximizing the throughput of the physical substrate and minimizing the provisioning cost. He et al [10] took into account QoS constraints to build a reliable multicast tree with recovery nodes and passing a service chain. e overhead could be large for data recovery using response messages if the network is unstable.…”

“…Provisioning multicasting service with a specific network function chain in software-defined MEC is a promising technique and poses many challenges. Firstly, most of the studies on multicasting in MEC or SDN are based on classic IP multicast [9][10][11][12], which is not negligible to face those basic issues [13]. e applicability is necessary to be concerned before designing multicasting mechanism.…”

A Service Function Chain Deployment Method Based on Network Flow Theory for Load Balance in Operator Networks

“…The number of VNFs contained in an SFC request obeys the uniform distribution of [2], [4], and the types of VNFs are different. The computing resource demands of VNFs obey the uniform distribution of [7], [10], and the bandwidth demands of SFCs obey the uniform distribution of [5], [8]. The maximum allowable transmission delay of SFC obeys the uniform distribution of [6], [8].…”

LogEvent2vec: LogEvent-to-Vector Based Anomaly Detection for Large-Scale Logs in Internet of Things

“…Therefore, logs are one of the most valuable data sources for device management, root cause analysis, and IoT solutions updating. Log analysis plays an important role in IoT system management to ensure the reliability of IoT services [12]. Log anomaly detection is a part of log analysis that analyzes the log messages to detect the anomalous state caused by sensor hardware failure, energy exhaustion, or the environment [13].…”