Deliverables
MONASIDRE developed a unified resource management platform for B3G systems. This consists of a Service and Network Resource Management (SNRM) system that facilitates the transactions between service providers (SPs) and network operators (NOs), as well as between co-operating NOs, and configures the operators' networks properly, taking into account the load and the requested services, in a Composite Radio (CR) context.
Due to the complementary role of the wireless access networks of a CR infrastructure, a NO can choose, instead of rejecting users or of degrading their Quality of Service (QoS) levels, to direct them to an alternate radio technology. For users and SPs, the supporting radio technology can be irrelevant, as long as cost and QoS criteria are met, and multi-mode terminals are used. Therefore, the SNRM platform that MONASIDRE deployed consists an innovative development that boosts the evolution, enhancement and effectiveness of e-business, e-work, and e-commerce applications, by supporting quality for new, sophisticated services, and by proposing new business ideas. Individuals, organisations, and markets can benefit from the advantages of such applications. SPs are enabled to better serve their customers, and NOs are able to increase their market share by promoting their infrastructure. Additionally, NOs exploit their networks more efficiently.
The simulators developed for use in B3G systems are capable of representing UMTS, HIPERLAN-2, DVB-T and IP networks and their environment (by modelling their essential features), as well as interacting with the MONASIDRE management platform.
There are two (jointly working) simulators. The Radio Network and Environment Simulator (Radio-NES) have three instances, one per radio technology. The IP-NES simulates the IP core network. The different instances of the Radio-NES interact with the unique instance of the IP-NES.
The components of the Radio-NES module are the Environment Representation, the Network Representation, the Simulator Event Scheduler, the Simulator Controller, and the Graphical User Interface.
The IP-NES module of the NES MONASIDRE component is an evolution (an extended version) of the public domain Ns2 simulator. In order to make the latter suitable for the MONASIDRE platform, major modifications had to be made. The main objective of these modifications was to make Ns2 an interactive application instead of being a "batch type" simulation tool. In addition to interactive capabilities some other features were also added to Ns2 in order to improve the interactions with the users. All the improvements mentioned above have made IP-NES a powerful tool to be used for teaching telecommunication courses.
Composite radio (CR) infrastructure enables network operators to provide more efficient, in terms of cost and Quality of Service (QoS), wireless access to broadband IP-based services. In case of large demand -in relation to network capacity-, instead of degrading the QoS levels or even rejecting users, the traffic volume can be split between co-operating networks, with the exploitation of the CR capabilities, and the rejection of users or degradation of their QoS levels can be avoided.
When the utility volume (i.e., user interest and operator benefit) for high quality levels is large, the MONASIDRE System leads to better performance, even under high offered prices by the co-operating networks. The improvement is due to the higher QoS levels, which can be maintained through the CR infrastructure, and the new agreements with Network Providers (NPs) that can be established when needed. When the utility of user classes for high quality levels decreases, the performance improvement decreases until it becomes unimportant. This is because the operator does not have an explicit remarkable gain by trying to provide the highest QoS level, since the interest for each user class, and the associated benefit of NPs, is almost the same for all QoS levels.
The optimisation algorithms developed conduct two general tasks. First, service configuration and distribution to the composite radio (CR) infrastructure. Second, network configuration for accommodating the demand and the QoS levels that have derived from the previous task. The first task deals with allocating the user classes to QoS levels, and the demand volume to networks of the CR infrastructure. This optimisation step is based on the service provider requests, and the network capabilities to support specific transport services, taking into account the current load of the different networks, the cost for using resources, terminal profiles, quality levels, and user classes.
The second task objective is to find the best network configurations that can accommodate the demand and QoS assignment proposed by the first task. The optimisation process differs, depending on the network type. The result within each radio domain (e.g., UMTS, HIPERLAN-2) is the generation of a set of known parameters to configure on the network elements. The management actions taken over the IP network mostly consist in network reconfiguration through parameter updates and/or the adaptation of policies.
Network operators can exploit the aforementioned optimisation algorithms so as to better exploit their network infrastructure and expand their market share.
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