Eero Wallenius

Pricing model for 3G/4G networks

Pricing of the future multimedia services in the 3G/4G networks will play a key role from operators point of view to achieve the maximum revenue and maximizing ROY. On the other hand pricing of the various new services is a very important issue to subscribers and especially the pricing versus the acceptance of services will be a very delicate and important matter that must be dealt very gently. This paper introduces models for the 3G/4G service pricing including QoS.

Call and messaging performance comparison between IMS and SIP networks

The IP Multimedia Subsystem (IMS) has been considered to be exclusive to big players of the telecommunication world. Session Initiation Protocol (SIP) has been standardized by IETF and solutions based on it have been in the market at least for a decade. It is also an essential part of the IMS, as it is the control protocol of IMS. Recent development of the Linux platform and the Open source IMS system has lead to a situation where the IMS is also an affordable solution for smaller telecommunication companies. The obvious question has been whether the level of performance with Open source IMS is really suitable for business usage. ETSI-TISPAN has unified IMS performance measurements by defining a common framework which to follow in measurements. The paper presents comparisons between IMS and SIP based networks in call and messaging performance. the Open IMS solution by the Fraunhover Focus Institute is compared with the OpenSIPS, an open source SIP server. The number of users in our measurements was chosen to be 100 000, a large enough number to be considered as a suitable number of users for small or moderate business usage needs. Our study shows that both of the systems are able to handle this many users and, in the case of OpenSIPS, with a clear margin. It was also discovered that both systems are reliable and are suitable for small and moderate business usage.

Providing QoS at the integrated WLAN and 3G environments

In this paper we analyze how well 3G traffic classes can survive with 802.11es QoS properties, when packet sizes and channel error rates are varied. We try to find out the best packet size and channel error rate combinations for each 3G traffic classes by using different wireless and wired network configurations.

Simulation Study on 3G and WLAN Inter-Working

Seamless interconnection with wireless LAN and 3G technologies is essential for the future wireless environment. The Wireless Local Area Network (WLAN) integrated mobile device is designed to extend the reach of enterprise applications and to create new collaboration environments. Also rapid new service development has started to change traffic mixes in the cellular networks towards IP dominating carriers like GPRS (General Packet Radio Service) and WLAN. These drastic changes require new research in the network as well as system inter-working areas for both the cellular and WLAN technology areas. This is the main challenge our research is trying to solve giving answers to rising inter-working and interoperability questions.

Network and System Performance Management for Next Generation Networks

The physical and logical structures of next generation network and service environment is complex and requires increasingly sophisticated and complicated tools to be fully controllable and well managed. The main problem that has risen is that the old telemanagement model has not enough flexibility to manage rapidly and constantly changing network environment. 3G and 4G networks are basically IP based and the knowledge of IP type traffic management is somewhat new and challenging to telecom vendors. The present way of controlling and managing telecom systems is to use non real time off-line PM (performance monitoring) and tools. Time periods between tuning can now be some days to some weeks or even months. Modern 3/4G networks actually need constant real time control to overcome for example fast and unpredictable video streaming or call type traffic bursts. To ease the difficult situation and solve the problem we have studied and developed a new control and management concepts and methods to monitor, control and manage in real time any magnitude of network and system environments. This paper presents the basic concept of the management system in big operator environments consisting of any kind of network elements

Registration performance comparison between IP Multimedia Subsystem and Session Initiation Protocol networks

The IP Multimedia Subsystem (IMS) is an IP based service control framework architecture. It uses Session Initiation Protocol (SIP) to control its multimedia sessions. The IMS core can be considered as a collection of different functions that are linked with standard interfaces, forming an IMS core network. The IMS has layers for transport, the core itself, and for services and applications. The complexity of the IMS core is greater than within pure SIP based networks. To help to make comparisons between different IMS networks, the ETSI-TISPAN has unified the IMS performance measurements by defining a common framework which to follow. In this paper, the Open IMS solution by the Fraunhover Focus Institute is compared with the OpenSIPS, an open source SIP server used for users registrations to network. The number of users was chosen to be 100 000, a large enough number to be considered as a suitable number of users for small or moderate business usage needs. Our study shows that both of the systems are able to handle this many users and, in the case of OpenSIPS, with a clear margin. It was also discovered that both systems are reliable and are suitable for small and moderate business usage and further performance study trials

Monitoring and management solutions for 3G/4G wireless mobile networks

The complexity of the physical and logical structures of the 3/4G network and service environment demand more sophisticated and complicated tools to be fully controllable and well managed. One of the main problems is the traditional telemanagement model that does not suit for managing fast and constantly changing network and system environment. The present way using nonreal time off-line tools to tune the tele system and networks in periods of some weeks or months when they would need constant real time control to overcome fast and unpredictable video streaming or call type traffic burst. To ease the difficult situation and solve this problem we have studied and developed a new control and management concepts and methods to monitor, control and manage in real time any magnitude of network and system environments. This paper presents a concept of the management system for large operator environments.

Enterprise and Community Level IMS, a New Business Opportunity

This paper describes a new model on how to create business on an IMS based IP service system for enterprise and community level offering full variety of basic IMS services with an affordable price tag. The basic idea lies on down scaling the very pricy Telecom scale IMS into a small scale OpenSource Ubuntu / Linux platform and an OpenSource IMS system. Basically enterprise and community scale systems do not need all the full scale functionalities of 3GPP/3GPP2/ETSI-TISPAN IMS standard carrying several million subscribers and therefore the system simplicity makes the difference.