Mohammadreza Behjati
Start date: January 01, 2011
Email: mohammadreza.behjati@brunel.ac.uk
Web: www.brunel.ac.uk/~eepgmmb1
Direct Line: +44 (0)1895 265375
Supervisor: Prof. John Cosmas
PhD Research Title: Self-Organizing Network Solutions for Interference Coordination in Heterogeneous LTE-Advanced Networks
As the development of LTE telecommunication standard, LTE-Advanced is a true 4G evolution step, recently standardized in 3GPP Release 10 and approved by ITU and IMT-Advanced. For such telecommunication standards and networks, the main expectations could be summarized in three keywords of data rate, delay and capacity. The peak data rate for LTE-Advanced is expected to be up to 1 Gbit/s, realizing 100 Mbps downlink rate and 50 Mbps uplink rate by adopting MIMO and OFDM techniques. Delay also could be assumed as a primary design target to reduce the latency for a packet sent from a server to clients. Alongside with growing demands, the capacity shortage would degrade the QoS for whole the network and proper spectral efficiency is needed to be measured and implemented. A critical factor which affects all these key parameters is Interference. On the other hand, Self-Organizing Network (SON) is recently being investigated as a reconfigurable networking technology to improve the spectrum efficiency for the radio access technologies such as HetNet LTE-Advanced.
Higher rate LTE-Advanced with peak data rates up to 1 Gbit/s and scalable system bandwidth exceeding 20 MHz and up to 100 MHz could be achieved with applying dynamic spectrum allocation scenarios to enhance the existing LTE systems and acquire flexible spectrum usage and interference management, as well as suppression through the post-LTE networks. The application of small-cells like micro/pico/femto within the isolated cells highly needs the consideration of interference alleviation as a critical objective for the whole LTE-Advanced project, and it could be facilitated if self-organizing strategies would be taken into account to improve the cooperation between the macrocells and micro/pico/femto cells, as well as multi-cell environments.
Multi-Layer Deployment in Heterogeneous Networks
Publications:
M. Behjati, J. Cosmas “Cognitive-based Spectrum Flexibility Enhancements in LTE-Advanced Networks (DAMAVAND)”, Presented Poster on Graduate School Poster Competition, March 2012, Brunel University, UK.
