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Reliability was, and still is, a major concern for telecoms operators. Network outage can potentially produce high penalty in terms of revenue and user quality of experience. In this paper, we advocate that the data plane reliability can be easily improved when the Software Defined Networking (SDN) concept is incorporated into LTE/EPC networks. As a way to ensure user connectivity be available even...
Nowadays, mobile operators face the challenge to sustain the future data tsunami. In fact, today's increasing data and control traffic generated by new kinds of network usage puts strain on mobile operators', without creating any corresponding equivalent revenue. In our previous work, we analyzed the 3GPP LTE/EPC architecture and showed that a redesign of this architecture is needed to suit future...
The on-demand connectivity service is one of the main requirements of the cellular data network. It consists in moving sessions transparently and temporarily from one network equipment to another without causing user session interruption. This service enables networks to cope with the ever-changing network condition such as sudden congestion or arbitrary network equipment failure. In this paper, we...
In the context of internet of things, mobile operators face the challenge to host millions of devices with various capabilities and intelligence. With the traditional connectivity management in Long Term Evolution / Evolved Packet System (LTE/EPS) networks, security services such as confidentiality and integrity protection are designed to be activated in a systematic manner leading to significant...
Nowadays, network operators face the challenge to host millions of devices having various needs. With the traditional connectivity management in EPS/LTE accesses, security services such as confidentiality and integrity protection are designed to be activated in a systematic manner leading to significant signaling and processing cost. In this paper we are interested in looking at security implementation...
The emergence of heterogeneous access technologies and the increasing need for ubiquitous connectivity have driven the network operators to evolve their mono-access architectures towards a multi-access convergent architecture. Hence, the network operators face the challenge to host several categories of subscribers such as static subscribers, subscribers with high mobility, subscribers with small...
The monitoring of the quality of service in a multi-domain network supervises the multi-domain service performance. A multi-domain service is a service that crosses several domains which can be managed by different providers. Since each domain can be managed with its own policies and may require confidentiality of its topology and its monitoring processes, we propose that the monitoring architecture...
Monitoring the quality of service in a multi-domain network allows providers to ensure the control of multi-domain service performance. A multi-domain service is a service that crosses multiple domains. In this paper, we propose several mechanisms for fault detection and fault localization. A fault is detected when an end-to-end contract is not respected. Faulty domains are domains that do not fulfill...
In Internet networks, monitoring is necessary to guarantee the performance of the services. In this paper, we review the state-of-the-art monitoring architectures proposed for multi-domain networks. We note that these architectures do not support measurement configuration that enables the providers to perform flexible multi-domain measurements. Therefore, we present our proposal for the configuration...
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