arXiv subjects

Mays F. AL-Naday

Publications and source records attributed to Mays F. AL-Naday.

3 recordsLinked to original sources

arXiv2017

Anchor Free IP Mobility

Efficient mobility management techniques are critical in providing seamless connectivity and session continuity between a mobile node and the network during its movement. Current mobility management solutions generally require a central entity in the network core, tracking IP address movement and anchoring traffic from source to destination through point-to-point tunnels. Intuitively, this approach suffers from scalability limitations as it creates bottlenecks in the network, due to sub-optimal routing via the anchor point. Meanwhile, alternative anchorless, solutions are not feasible due to the current limitations of the IP semantics, which strongly ties addressing information to location. In contrast, novel path-based forwarding solutions may be exploited for feasible anchorless solutions. In this paper, we propose a novel network-based mobility management solution that facilitates IP mobility over such a path-based forwarding substrate. Our solution exploits the advantages of such substrates in decoupling path calculation from data transfer to eliminate the need for anchoring traffic through the network core; thereby, allowing flexible path calculation and service provisioning. Furthermore, by eliminating the limitation of routing via the anchor point, our approach reduces the network cost compared to anchored solution through bandwidth saving while maintaining comparable handover delay. We evaluate our solution through analytical and simulation models and compare it with the IETF standardized solution, Proxy Mobile IPv6 (PMIPv6). Evaluation results illustrate a significant saving in the total network cost when using our proposed solution, compared to its counterpart.

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arXiv2017

Seamless Handover in IP over ICN Networks: a Coding Approach

Seamless connectivity plays a key role in realising QoS-based delivery in mobile networks. However, current handover mechanisms hinder the ability to meet this target, due to the high ratio of handover failures, packet loss and service interruption. These challenges are further magnified in Heterogeneous Cellular Networks (HCN) such as Advanced Long Term Evolution (LTE-Advanced) and LTE in unlicensed spectrum (LTE-LAA), due to the variation in handover requirements. Although mechanisms, such as Fast Handover for Proxy Mobile IPv6 (PFMIPv6), attempt to tackle these issues; they come at a high cost with sub-optimal outcomes. This primarily stems from various limitations of existing IP core networks. In this paper we propose a novel handover solution for mobile networks, exploiting the advantages of a revolutionary IP over Information-Centric Networking (IP-over-ICN) architecture in supporting flexible service provisioning through anycast and multicast, combined with the advantages of random linear coding techniques in eliminating the need for retransmissions. Our solution allows coded traffic to be disseminated in a multicast fashion during handover phase from source directly to the destination(s), without the need for an intermediate anchor as in exiting solutions; thereby, overcoming packet loss and handover failures, while reducing overall delivery cost. We evaluate our approach with an analytical and simulation model showing significant cost reduction compared to PFMIPv6.

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arXiv2016

Information-centric Multilayer Networking: improving performance through an ICN/WDM architecture

Information-centric networking (ICN) facilitates content identification in networks and offers parametric representation of content semantics. This work, proposes an ICN/WDM network architecture that uses these features to offer superior network utilization, in terms of performance and power consumption. The architecture introduces an ICN publish/subscribe communication approach to the wavelength layer, whereby, content is aggregated according to its popularity rank into wavelength-size groups that can be published and "subscribed to" by multiple nodes. Consequently, routing and wavelength assignment (RWA) algorithms benefit from anycast to identify multiple sources of aggregate content and allow optimization of the source selection of light-paths. A power-aware algorithm, Maximum Degree of connectivity (MaxDeg), has been developed with the objective of exploiting this flexibility to address the trade-off between power consumption and network performance. The algorithm is also applicable to IP architectures, albeit with less flexibility. Evaluation results indicate the superiority of the proposed ICN architecture, even when utilizing conventional routing methods, compared to its IP counterpart. The results further highlight the performance improvement achieved by the proposed algorithm, compared to conventional RWA methods such as Shortest-path First Fit (SFF).

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