Modeling Coordinated Multipoint with a Dynamic Coordination Station in LTE-A Mobile Networks

Users located on the cell edge suffer from low data rates due to interference and poor reception. The Coordinated Multipoint technology targets this problem but it imposes over-head on the network, which can result in degradation of the Quality of Service. The Direct CSI feedback to Elected Coordina-tion station architecture minimizes such overhead, resulting in improved data rates. Here, we analyze the performance of DCEC, Centralized, and Distributed control architectures for LTE-Advanced mobile networks in urban areas showing the ad-vantages of the approach

Signaling overhead and feedback delay reduction in heterogeneous multicell cooperative networks

Heterogeneous networks (HetNets) and multicell cooperation are two key technologies in cellular networks that can improve network performance. The channel information of all the collaborating Base Stations (BSs) is one of the core factors to achieve better throughput performance gain in the coordinated multipoint (CoMP) communication. Here, we propose a novel method for handling Channel State Information (CSI) feedback in HetNet CoMP, named DCEC-HetNet: Direct CSI-feedback to Elected Coordination-station for Heterogeneous Networks. The DCEC-HetNet architecture aims to reduce the signaling overhead and feedback latency, and subsequently increase the throughput of the network. We use the Discrete Event System Specification (DEVS) formalism to model the cellular network. The simulation results demonstrate that the DCEC-HetNet architecture significantly decreases the number of CSI feedback packets being transmitted within the network, and reduces the feedback latency resulting in higher cell throughput

Using elected coordination stations for CSI feedback on CoMP downlink transmissions

The higher demand for data traffic and the emergence of new applications has made mobile networks challenging to maintain high data rates for users, in particular those located on the cell's edges. The Coordinated Multipoint (CoMP) technology adopted in long-term evolution (LTE) cellular networks allows improving the cell's edge performance. In order to improve throughput performance gain in the downlink, the CoMP scheduler needs to know/deal the channel information for all the collaborating Base Stations. To do so, we propose a method for handling Channel State Information (CSI) feedback, named DCEC: Direct CSI feedback to Elected Coordination station. The DCEC architecture aims to reduce the overhead and latency of the network, and subsequently increase its throughput. To model the proposed architecture in the cellular network, we have used the Discrete Event System Specification (DEVS) formalism. The simulation results demonstrate that the DCEC architecture significantly decreases the number of CSI feedback packets being transmitted within the network and reduces the feedback latency resulting in higher data rates for users

Using elected coordination stations for CSI feedback on CoMP downlink transmissions

The higher demand for data traffic and the emergence of new applications has made mobile networks challenging to maintain high data rates for users, in particular those located on the cell's edges. The Coordinated Multipoint (CoMP) technology adopted in long-Term evolution (LTE) cellular networks allows improving the cell's edge performance. In order to improve throughput performance gain in the downlink, the CoMP scheduler needs to know/deal the channel information for all the collaborating Base Stations. To do so, we propose a method for handling Channel State Information (CSI) feedback, named DCEC: Direct CSI feedback to Elected Coordination station. The DCEC architecture aims to reduce the overhead and latency of the network, and subsequently increase its throughput. To model the proposed architecture in the cellular network, we have used the Discrete Event System Specification (DEVS) formalism. The simulation results demonstrate that the DCEC architecture significantly decreases the number of CSI feedback packets being transmitted within the network and reduces the feedback latency resulting in higher data rates for users

Signaling overhead and feedback delay reduction in heterogeneous multicell cooperative networks

Heterogeneous networks (HetNets) and multicell cooperation are two key technologies in cellular networks that can improve network performance. The channel information of all the collaborating Base Stations (BSS) is one of the core factors to achieve better throughput performance gain in the coordinated multipoint (CoMP) communication. Here, we propose a novel method for handling Channel State Information (CSI) feedback in HetNet CoMP, named DCEC-HetNet: Direct CSI-feedback to Elected Coordination-station for Heterogeneous Networks. The DCEC-HetNet architecture aims to reduce the signaling overhead and feedback latency, and subsequently increase the throughput of the network. We use the Discrete Event System Specification (DEVS) formalism to model the cellular network. The simulation results demonstrate that the DCEC-HetNet architecture significantly decreases the number of CSI feedback packets being transmitted within the network, and reduces the feedback latency resulting in higher cell throughput

International Growth Orientation of Knowledge-Intensive SMES

As a response to the increasing interest in the internationalisation of knowledge-intensive firms, a measure for analysing their international growth orientation was developed. This measure was applied in empirical setting of Finnish information and communication technology companies. The development of the measure as well as the empirical findings are described in detail, and the validity and the reliability of the measure was secured in various ways. The measure seems both viable and valid, and also the findings appear to be logical, and they give a good basis for further research on the topic. Copyright Springer Science + Business Media, Inc. 2005international growth orientation, knowledge-intensive firms, growth,