Low-Latency Oriented Network Planning for MEC-Enabled WDM-PON Based Fiber-Wireless Access Networks

Abstract

WDM-PON-based mobile edge computing (MEC)-enabled fiber wireless access networks (MFWAN) have been identified as a promising technology for next-generation broadband access. Lowlatency oriented network planning of the WDM-PON-based MFWAN would be required for low-latency access to newly emerging latency-sensitive applications in the fifth-generation (5G) era. However, this would require a low-latency oriented network design in the network planning phase and has thus become a crucial challenge. In this paper, we investigate low-latency oriented network planning of the WDM-PON-based MFWAN under physical and management constraints. To this end, we develop a mathematical model to minimize total transmission latency for all latency-sensitive services. Our model is composed of the propagation latency on the paths and the processing latency on the network equipment and is subject to constraints of maximal transmission distance, maximal PON power budget, bandwidth requests, and the fronthaul latency limit under some functional split options. Given the model's complexity, we also propose a heuristic algorithm called latency-minimized integrated multi-associated positioning and routing algorithm (LMI-MAPRA). The simulation results show that the proposed algorithm outperforms the benchmark algorithm with more total transmission latency reductions in both sparse and dense networks. We also analyze the impact of key parameters on comparisons of different approaches in terms of low-latency optimal performances.

Joint Optimization of Latency and Deployment Cost Over TDM-PON Based MEC-Enabled Cloud Radio Access Networks

“…The scalable inter-programming method is proposed to solve the cost-effective deployment over TDM-PON based hybrid cloudlet placement architecture [27]. In addition, our former proposed study investigates the low-latency oriented network planning of MEC-enabled FiWi access networks while satisfying physical and management constraints [28].…”

“…(19) and (20) are satisfied, the same approach [39] is applied to establish the optimal configuration path between c ∈ W C and m ∈ M mec taking into account of Eq. (10) (line [22][23][24][25][26][27][28][29]. Repeat line 2 to line 28 until the maximal transmission distance of Eq.…”

“…We choose the constrained enumeration approach in [28] as the benchmark algorithm to evaluate the performance of proposed algorithm. To compare different approaches in the same situation, the enumeration approach considers the same constrains as proposed algorithm, which is called as ''Randomly Sampling Enumeration Approach (RSEA)''.…”

Free Space Optical Communication in Long-Reach Unidirectional Ring-Architecture Fiber Network

“…Hence, the integrated optical wired and wireless access technologies, will be the promising candidate, have been studied recently [9][10][11]. However, to achieve higher capacity for data transmission, wavelength-divisionmultiplexing (WDM) access technology could be the better choice [12,13]. In addition, in the present PON architecture, the tree-, ring-and bus-based fiber networks have been built and demonstrated [14,15].…”

Device-Enhanced MEC: Multi-Access Edge Computing (MEC) Aided by End Device Computation and Caching: A Survey

“…The Multi-access Edge Computing (MEC) paradigm, which is also known as Mobile Edge Computing, has been introduced to bring computing and storage resources in close physical proximity of the wireless end devices [2], [3]. For instance, MEC resources can be co-located with the base stations (BSs) or backhaul entities of cellular wireless communications [4], as illustrated in the left half of Figure 1.…”