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Base station density in modern cellular networks is continuously increasing in order to cope with the exponential increase in mobile data traffic. Cellular networks which used to rely on macro cells for both system coverage and data transfer are now turning to small cells at an increasing rate. Small cells can complement macro cell dominant cellular networks by providing a cost effective means for...
In this paper, we study the overall development of Full Dimension MIMO (FD-MIMO) technology in the context of next generation evolution towards B4G and 5G cellular systems. FD-MIMO relies on a large number of antennas placed in a 2-dimensional antenna array panel at base stations (BSs). Utilizing the 2-dimensional antenna array, FD-MIMO simultaneously transmits to a large number of mobile stations...
IGCC (Integrated Gasification Combined Cycle) power plant is one of the promising power generation systems for the future as it can utilize the plentiful resource of coal in an eco-friendly way. The IGCC system is more complicated than the conventional pulverized coal power plant, so its dynamics should be investigated and an appropriate control strategy must be devised to ensure stable and efficient...
Although PMIPv6 was designed to provide network-based mobility, it has a limitation in that MNs (Mobile Nodes) can perform handover only within a local domain. This paper proposes a novel inter-PMIPv6-domain handover scheme that extends the handover capability of PMIPv6 to the inter-domain level. The proposed scheme minimizes the inter-domain handover latency by introducing the overlapping MAG (OMAG)...
Advanced interference mitigation techniques relying on multipoint coordination have attracted significant attention from the wireless industry and academia in the past few years. In 3GPP LTE-Advanced, a work item on Coordinated Multiple Point transmission and reception (CoMP) was initiated in September 2011, and it is one of the core features of Release 11. The objective of this work item is to provide...
With the frequency reuse approaching one and the networks becoming more and more heterogeneous, cooperative multi-point MIMO has become a key candidate technology in the design of future wireless networks and is nowadays an active research topic in the academia and the industry. In 3GPP LTE-Adv. Rel. 11, a new study item on Coordinated Multi-Point transmission and reception (commonly denoted as CoMP)...
Recently, the IETF proposed a Mobile IP as a mobility management protocol. However, host-based mobility management protocols such as MIPv6, FMIPv6 and HMIPv6 have issues such as handover latency, signaling overhead or node power consumption. Likewise, network-based localized mobility management protocols, such as PMIPv6, have defects that are not supported in multiple domains and are also not guaranteed...
Multiple Input Multiple Output (MIMO) technology using multiple transmit and receive antennas is considered one of essential elements for wireless communication systems in order to achieve the required spectral efficiency and high data rates. In this paper, we propose new multi-user preceding MIMO schemes named successive interference cancellation (SIC) based Per User and Stream Rate Control (S-PUSRC),...
Sounding provides a BS with knowledge of the channel state information of a user in an orthogonal frequency division multiple access (OFDMA) full duplex division (FDD) uplink. In this paper, we propose a novel sounding subband allocation algorithm for the proportional fair (PF) scheduler. Simulation results show that our proposed sounding method enables the PF scheduler to achieve the throughput gain...
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