Jacques Demerjian

Broker-based Cross-Cloud Federation Manager

Cloud federation is the next step in creating a new cloud computing ecosystem. The absence of suitable business models for federation managers is hindering the wide deployment of this critical feature. In this paper we will study existing federation managers, specifically CCFM (Cross-Cloud Federation Manager) and analyze its strengths and limitations. To overcome its limitations and make cloud federation more competitive in the current business trends, we introduce a new node called “broker” which will play a significant role in the enhanced CCFM mechanisms. The discovery and match-making agents in CCFM will be modified to enforce a new business model which is more interesting for private investors. Finally, our new business model will be discussed and possible versions are stated.

EC-AKA2 a revolutionary AKA protocol

Security is increasingly demanding in mobile communication, especially LTE, and the incremental value of transmitted assets over wireless networks pushes risk way above acceptable thresholds. Decision is continuously moving towards the user side, while the need for seamless security is becoming a must. Under all these requirements, 3GPP failed to propose a new Authentication and Key Agreement Protocol that solves the vulnerabilities found in the current AKA, and implement user preferences in network selection, thus 3GPP failed to meet LTEs current security needs. This paper proposes a complete AKA protocol that solve four different LTE-AKA weaknesses. The proposed protocol is backward compatible, needs no additional investment and achieves great QoS performance.

Security in Emerging 4G Networks

This chapter presents emerging wireless technologies applied to the domain of healthcare, which has been identified as a very important domain of increasing interest to researchers. The chapter also provides an overview of the security issues related to these emerging technologies and networks.

Enhanced Revenue Optimizing SLA-Based Admission Control for IaaS Cloud Networks

As cloud markets get mature, CSPs (Cloud Service Providers) will strive to maintain their market shares by ensuring high customer satisfaction which is severely affected by each SLA (Service level agreement) breach. A CSP has to compromise between long-term (maintaining quality of service and SLAs) and short-term (decreasing the rejection of incoming jobs) profitability. In this paper we propose an admission control mechanism for cloud networks that increases the long-term profits without affecting the CSPs short-term targets and its profits enhancements ranges between 80% and 400%.

Asynchronous reliable multicast protocol in vehicular ad hoc networks

The paper presents an asynchronous reliable multicast protocol in vehicular ad hoc networks VANETs. It is a time free reliable multicast protocol that ensures integrity, validity and agreement properties of message delivery to all members of a group of cars. In particular; there is a need for reliable multicast in which any message transmitted is either received by all members of a group or by none of them. The asynchronous reliable multicast protocol guarantees reliable delivery of messages in presence of omission failure and crash failure of some cars independently of timeliness properties of the system, and even in the presence of timing errors in the environment. Asynchronous reliable multicast service is very necessary in VANETs particularly, because of cars mobility model and speed which may break communication links between cars.