Intelligent Network Node Research Articles

Efficient service discovery in mobile social networks for smart cities

Mobile social networks (MSNs) play an important role in the process of the development of smart cities. Citizens can interact and engage with services provided by MSNs. Smart city services enhance their quality of life. With the popularity of smart phones, mobile social activities have become an important component of citizens’ daily life. People can post their social contents to their remote friends and can access shared information in the cycles of friends anytime and anywhere through their mobile devices. This human-centered social approach generates enormous amounts of social data that are distributed across various smart devices. Efficient service discovery from such cycles of friends is a fundamental challenge for MSNs. This paper proposes a friends’ cycle service discovery (FCSD) model for searching social services in MSNs based on human sociological theories and social strategies. In the proposed FCSD network, intelligent network nodes with common social interests can self-organize to interact and form social cycles with other potential nodes, and further can co-operate autonomously to identify and discover useful services from cycles of friends and cycles of friends’ friends. The proposed model has been simulated and evaluated in a decentralized mobile social environment with an evolving network. The experimental results show that the FCSD model exhibits better performance compared with relevant state-of-the-art services search methods.

Analysis of New Services Influence for Signaling Network Node

Before the introduction of new services in the telecommunication network, need to estimate the influence of the realization algorithm of service and possible the intensity of usage on the fitness for work of the signaling network nodes. Each service has own interaction between intelligent network node and different number of transactions. In the work gives the analytical model whish include service switching point/intelligent peripheral nodes (SSP/IP), service control point/service data point (SCP/SDP) and the nodes of signaling network (STP). For creating the analytical IN model was used Jackson's theorem. By using the proposed model, is cared out the calculation of the influence of services free phone FP and Account Calling Card ACC on signalling nodes of the given network. Ill. 7, bibl. 8 (in Lithuanian; summaries in Lithuanian, English, Russian).

Optimized Rate-Distortion Extraction With Quality Layers in the Scalable Extension of H.264/AVC

The concept of quality layers that has been introduced in scalable video coding (SVC) amendment of MPEG4-AVC is presented. By using the Quality Layers post-processing to evaluate and signal the impact on rate and distortion of the various enhancement information pieces, a significant gain is achieved: quality layers significantly outperform the basic standard extractor that was initially proposed in SVC. For the standard set of test sequences, in a range of acceptable video quality, an average quality gain of up to 0.5 dB is achieved. Furthermore, the technique can be used for combined (spatial, temporal and quality) scalability. Thanks to the signaling of this information in the header of the network abstraction layer units or in a supplemental enhancement information message, the adaptation can be performed with a simple parser, e.g., at decoder side or in an intelligent network node designed for rate adaptation.

ISDN implementation for a point-to-multipoint subscriber radio system

This paper will discuss the use of a point-to-multipoint subscriber radio system in both a line/loop extension and intelligent network node configuration to support basic rate ISDN subscribers' terminal equipment. Considerations involved in each type of implementation are included in the discussion as well as the concept of an open structure which will enable the line/loop configuration to be used as a basis for an intelligent node implementation.