A downlink MAC scheduler aims to improve the radio resources utilization in the Long Term Evolution (LTE) network. The MAC scheduler is responsible for sharing the available radio Resource Blocks (RBs) among different User Equipment (UEs) in time and frequency domains. Several downlink MAC schedulers have been proposed and implemented; however, providing fairness in terms…
Category: OMNET PROJECT IDEAS
Re-Dimensioning Number of Active eNodeBs for Green LTE Networks Using Genetic Algorithms
With the tremendous growth of cellular networks, energy consumption reduction has become a critical requirement. Recent research has focused on the base station as the main constituent that drains the highest percentage of energy consumption within cellular infrastructures. In LTE, the predominance of data traffic might result in significant volatility in traffic loads across evolved Node…
Resource Allocation Strategies for Network-Coded Video Broadcasting Services Over LTE-Advanced
Video service delivery over 3GPP Long Term Evolution-Advanced (LTE-A) networks is gaining momentum with the adoption of the evolved Multimedia Broadcast Multicast Service (eMBMS). In this paper, we address the challenge of optimizing the radio resource allocation process so that heterogeneous groups of users, according to their propagation conditions, can receive layered video streams at…
Enabling Device to Device Broadcast for LTE Cellular Networks
In recent years, the public safety community has been aligning behind LTE (Long Term Evolution) technology as the basis for next generation public safety networks. Correspondingly, the 3GPP (3rd Generation Partnership Project) standards body has started multiple technical work initiatives on LTEenhancements to better support public safety use cases and requirements. Of particular importance to the public safety…
STS: Space-time scheduling for coordinating self-organization network functions in LTE
Self-Organizing Networks (SON) and a number of SO functions (SFs) have been proposed, e.g. in theLTE standard. Since SFs operate on the same network, adjusting the same set of parameters, conflicts arise. Mechanisms are thus required to resolve or minimize these conflicts. We propose Space-Time scheduling procedures that allow for separating the execution of SFs at…
A Smart Sensor Network for Sea Water Quality Monitoring
Measurement of chlorophyll concentration is gaining more-and-more importance in evaluating the status of the marine ecosystem. For wide areas monitoring a reliable architecture of wireless sensors networkis required. In this paper, we present a network of smart sensors, based on ISO/IEC/IEEE 21451 suite of standards, for in situ and in continuous space-time monitoring of surface water bodies, in particular for seawater. The system…
13.6 A 600μW Bluetooth low-energy front-end receiver in 0.13μm CMOS technology
One of the main goals for the next generation of radios for wireless sensor and body-area networks(WSN and WBAN) is a sub-mW receiver (RX) compliant with energy-harvested supplies. In this direction, the Bluetooth standard has introduced a low-energy operative mode (BLE) with wider channel spacing (2MHz) and relaxed blocker tolerance. The minimum sensitivity required is -70dBm but even with…
A fast AGC method for multimode zero-IF/sliding-IF WPAN/BAN receivers
This paper presents a fast mixed-signal automatic gain control (AGC) method for zero-IF/sliding-IF receivers used in wireless personal and body-area networks (WPAN/BAN). The preamble defined in Bluetooth low energy (BLE)/802.15.4 /802.15.6 specifications are as low as 1 Byte. It is a tough challenge for the zero-IF/sliding-IF receivers to perform AGC training, frequency synchronization and symbol timing estimation. By detecting the…
Chest-worn health monitor based on a bistatic self-injection-locked radar
This paper presents a chest-worn health monitor based on continuous-wave Doppler radar technology. To achieve low complexity, low power consumption and simultaneous wireless transmission of Doppler information, the radar architecture is bistaic with a self-injection-locked oscillator (SILO) tag and an injection-locked oscillator (ILO) based frequency demodulator. In the experiments with a prototype operated in the…
Blockage Robust and Efficient Scheduling for Directional mmWave WPANs
With the increase in emerging bandwidth-intensive applications, millimeter-wave (mmWave) communications in 60-GHz band have become a hot topic. There are two unique features that sharply distinguish mmWave wireless personal area networks (WPANs) from other networks using lower carrier frequencies. First, mmWave links use high-gain directional antennas to overcome the high propagation loss. Second, mmWave links are easily blocked by the human body and furniture.…