Enhancing the Survivability and Power Savings of 5G Transport Networks Based on DWDM Rings

Wong, Elaine; Grigoreva, Elena; Wosinska, Lena; Machuca, Carmen Mas

doi:10.1364/jocn.9.000d74

Cited by 49 publications

(25 citation statements)

References 24 publications

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“…However, existing studies have not considered the control plane latency and complexity, which may significantly impact the overall end-to-end latency. Therefore while ensuring the flexibility and reliability in 5G networks, it is also important to consider the end-to-end latency, through infrastructure based solutions, such as, dense wavelength-division multiplexed (DWDM) optical ring transport networks [344] using dark fiber, which is both energy and cost efficient. 5) Discussion on ULL 5G Research Studies: There have been numerous research efforts in the wireless access segment of 5G networks.…”

Section: Sub-block4mentioning

confidence: 99%

Ultra-Low Latency (ULL) Networks: The IEEE TSN and IETF DetNet Standards and Related 5G ULL Research

Nasrallah

Thyagaturu

Alharbi

et al. 2019

IEEE Commun. Surv. Tutorials

506

219

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Many network applications, e.g., industrial control, demand Ultra-Low Latency (ULL). However, traditional packet networks can only reduce the end-to-end latencies to the order of tens of milliseconds. The IEEE 802.1 Time Sensitive Networking (TSN) standard and related research studies have sought to provide link layer support for ULL networking, while the emerging IETF Deterministic Networking (DetNet) standards seek to provide the complementary network layer ULL support. This article provides an up-to-date comprehensive survey of the IEEE TSN and IETF DetNet standards and the related research studies. The survey of these standards and research studies is organized according to the main categories of flow concept, flow synchronization, flow management, flow control, and flow integrity. ULL networking mechanisms play a critical role in the emerging fifth generation (5G) network access chain from wireless devices via access, backhaul, and core networks. We survey the studies that specifically target the support of ULL in 5G networks, with the main categories of fronthaul, backhaul, and network management. Throughout, we identify the pitfalls and limitations of the existing standards and research studies. This survey can thus serve as a basis for the development of standards enhancements and future ULL research studies that address the identified pitfalls and limitations.

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Section: Sub-block4mentioning

confidence: 99%

Ultra-Low Latency (ULL) Networks: The IEEE TSN and IETF DetNet Standards and Related 5G ULL Research

Nasrallah

Thyagaturu

Alharbi

et al. 2019

IEEE Commun. Surv. Tutorials

506

219

View full text Add to dashboard Cite

show abstract

“…As shown in Table 2, the substrate network capacities of the access, aggregation, and core layer networks are set to 40 Gbps, 80 Gbps, and 80 Gbps, respectively, according to the future planning of 5G high-capacity and highly scalable transport network [48,49]. Similarly, the setup of substrate links' length follows the practical structure of the backhaul network, as given in [50]. The node connectivity can describe the number of physical links, for example, when it is set to 0.4, the current node will randomly connect to 40% of the remaining nodes.…”

Section: Simulation Setupmentioning

confidence: 99%

Latency-Optimal Virtual Network Functions Resource Allocation for 5G Backhaul Transport Network Slicing

Feng

et al. 2019

Applied Sciences

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The concept of network slicing (NS) has been proposed for flexible resource provisioning where a physical resource is partitioned into logically independent networks on demand. The NS resource allocation implies the definition of a feasible path in the infrastructure network with adequate resource availability. However, due to complex structural characteristics of the backhaul transport network, a number of issues arise when fast deploying the end-to-end (E2E) slices onto network infrastructures. In this paper, a pair-decision resource allocation model is firstly formulated to construct the mapping relationship between logical networks and substrate networks in a coordinated way. In order to improve extreme quality of service (QoS) and user experiment, latency-optimal virtual resource allocation problem is defined, subject to the backhaul capacity and bandwidth constraints. The problem is formulated as an integer linear programming (ILP) and solved with the branch-and-bound scheme, whose resolution yields an optimal virtual network function (VNF) placement and traffic routing policy. Numerical results reveal that the proposed scheme can enable the transport network latency optimization with a reduction of up to 30% and 41.6% compared to the Network Slice Design Problem (NSDP) and Random Fit Placement Algorithm (RFPA) schemes respectively. In the meanwhile, the network load balance and serviceability have been improved efficiently with better resource utilization as well.

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“…Attack methods which exploit optical infrastructure vulnerabilities include, for example, insertion of harmful optical signals or malicious cuts of critical fiber links . The effects of such malicious attacks can range from performance degradation (in terms of, e.g., throughput and latency), over cascaded congestion in the remaining network segments that take over the affected traffic, to complete disconnection of a significant portion of the network affecting hundreds of gigabits per second in the core, and substantial damage in the access segment .…”

Section: Introductionmentioning

confidence: 99%

Content placement in 5G‐enabled edge/core data center networks resilient to link cut attacks

et al. 2020

Self Cite

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High throughput, resilience, and low latency requirements drive the development of 5G‐enabled content delivery networks (CDNs) which combine core data centers (cDCs) with edge data centers (eDCs) that cache the most popular content closer to the end users for traffic load and latency reduction. Deployed over the existing optical network infrastructure, CDNs are vulnerable to link cut attacks aimed at disrupting the overlay services. Planning a CDN to balance the stringent service requirements and increase resilience to attacks in a cost‐efficient way entails solving the content placement problem (CPP) across the cDCs and eDCs. This article proposes a framework for finding Pareto‐optimal solutions with minimal user‐to‐content distance and maximal robustness to targeted link cuts, under a defined budget. We formulate two optimization problems as integer linear programming (ILP) models. The first, denoted as K‐best CPP with minimal distance (K‐CPP‐minD), identifies the eDC/cDC placement solutions with minimal user‐to‐content distance. The second performs critical link set detection to evaluate the resilience of the K‐CPP‐minD solutions to targeted fiber cuts. Extensive simulations verify that the eDC/cDC selection obtained by our models improves network resilience to link cut attacks without adversely affecting the user‐to‐content distances or the core network traffic mitigation benefits.

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Enhancing the Survivability and Power Savings of 5G Transport Networks Based on DWDM Rings

Cited by 49 publications

References 24 publications

Ultra-Low Latency (ULL) Networks: The IEEE TSN and IETF DetNet Standards and Related 5G ULL Research

Ultra-Low Latency (ULL) Networks: The IEEE TSN and IETF DetNet Standards and Related 5G ULL Research

Latency-Optimal Virtual Network Functions Resource Allocation for 5G Backhaul Transport Network Slicing

Content placement in 5G‐enabled edge/core data center networks resilient to link cut attacks

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