51 research outputs found
Efficient Proactive Caching for Supporting Seamless Mobility
We present a distributed proactive caching approach that exploits user
mobility information to decide where to proactively cache data to support
seamless mobility, while efficiently utilizing cache storage using a congestion
pricing scheme. The proposed approach is applicable to the case where objects
have different sizes and to a two-level cache hierarchy, for both of which the
proactive caching problem is hard. Additionally, our modeling framework
considers the case where the delay is independent of the requested data object
size and the case where the delay is a function of the object size. Our
evaluation results show how various system parameters influence the delay gains
of the proposed approach, which achieves robust and good performance relative
to an oracle and an optimal scheme for a flat cache structure.Comment: 10 pages, 9 figure
Adaptive Resource Management for Edge Network Slicing using Incremental Multi-Agent Deep Reinforcement Learning
Multi-access edge computing provides local resources in mobile networks as
the essential means for meeting the demands of emerging ultra-reliable
low-latency communications. At the edge, dynamic computing requests require
advanced resource management for adaptive network slicing, including resource
allocations, function scaling and load balancing to utilize only the necessary
resources in resource-constraint networks. Recent solutions are designed for a
static number of slices. Therefore, the painful process of optimization is
required again with any update on the number of slices. In addition, these
solutions intend to maximize instant rewards, neglecting long-term resource
scheduling. Unlike these efforts, we propose an algorithmic approach based on
multi-agent deep deterministic policy gradient (MADDPG) for optimizing resource
management for edge network slicing. Our objective is two-fold: (i) maximizing
long-term network slicing benefits in terms of delay and energy consumption,
and (ii) adapting to slice number changes. Through simulations, we demonstrate
that MADDPG outperforms benchmark solutions including a static slicing-based
one from the literature, achieving stable and high long-term performance.
Additionally, we leverage incremental learning to facilitate a dynamic number
of edge slices, with enhanced performance compared to pre-trained base models.
Remarkably, this approach yields superior reward performance while saving
approximately 90% of training time costs
IPTV Over ICN
The efficient provision of IPTV services requires support for IP multicasting and IGMP snooping, limiting such services to single operator networks. Information-Centric Networking (ICN), with its native support for multicast seems ideal for such services, but it requires operators and users to overhaul their networks and applications. The POINT project has proposed a hybrid, IP-over-ICN, architecture, preserving IP devices and applications at the edge, but interconnecting them via an SDN-based ICN core. This allows individual operators to exploit the benefits of ICN, without expecting the rest of the Internet to change. In this paper, we first outline the POINT approach and show how it can handle multicast-based IPTV services in a more efficient and resilient manner than IP. We then describe a successful trial of the POINT prototype in a production network, where real users tested actual IPTV services over both IP and POINT under regular and exceptional conditions. Results from the trial show that the POINT prototype matched or improved upon the services offered via plain IP
On the design of a native Zero-touch 6G architecture
The complexity of envisioned 6G telecommunication networks requires an intrinsically intelligent architecture designed to autonomously adapt to dynamics with end-to-end zero-touch service automation operations. Motivated by this vision, this paper tries to formulate concepts and solution aspects towards designing a native Zero-touch 6G architecture. Our discussion concentrates around three main pillars, i.e. (i) introducing Machine Learning (ML) models in the core design of the 6G architecture as native functions rather than add-on model solutions; (ii) distributing 6G functionality to different components up to the extreme edge; to (iii) leverage technology leaps enabling, e.g., the use of multi-access technologies and peer-topeer communications besides the standard cellular connectivity and other centralised functionalit
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