NetCodCCN: a Network Coding approach for Content-Centric Networks

TL;DR

NetCodCCN introduces a network coding-based protocol for Content-Centric Networks that enhances data retrieval efficiency, robustness, and resource utilization, especially in multi-path and multi-source scenarios.

Contribution

It presents NetCodCCN, enabling interest aggregation and pipelining in CCN with network coding, improving delay, robustness, and resource efficiency.

Findings

Significant reduction in content retrieval delay.

Enhanced robustness against network losses.

Efficient utilization of network resources.

Abstract

Content-Centric Networking (CCN) naturally supports multi-path communication, as it allows the simultaneous use of multiple interfaces (e.g. LTE and WiFi). When multiple sources and multiple clients are considered, the optimal set of distribution trees should be determined in order to optimally use all the available interfaces. This is not a trivial task, as it is a computationally intense procedure that should be done centrally. The need for central coordination can be removed by employing network coding, which also offers improved resiliency to errors and large throughput gains. In this paper, we propose NetCodCCN, a protocol for integrating network coding in CCN. In comparison to previous works proposing to enable network coding in CCN, NetCodCCN permit Interest aggregation and Interest pipelining, which reduce the data retrieval times. The experimental evaluation shows that the proposed protocol leads to significant improvements in terms of content retrieval delay compared to the original CCN. Our results demonstrate that the use of network coding adds robustness to losses and permits to exploit more efficiently the available network resources. The performance gains are verified for content retrieval in various network scenarios.