Mobile Communications and Networking research is focused on next generation cellular wireless data network architectures. New technologies for improving spectral efficiency, spectrum utility and spatial reuse of spectrum on the radio-access network are being developed. On the mobile core network, research is oriented towards efficiently handling the exploding amount of mobile data traffic, enabling new revenue generating services for mobile operators and network CAPEX/OPEX reduction techniques. Variety of approaches including analysis, simulations, modeling, as well as experimental prototype design and network measurements are used to validate the technologies developed.

Specifically, the department's research scope encompasses fourth and future generation cellular wireless data network architectures for LTE, LTE-Advanced and WiMAX (802.16e, 802.16m). Technical issues related to both the Radio Access Networks (RAN) and the mobile core network (for example, the Evolved Packet Core (EPC) for LTE) are being studied. Within the RAN, technologies such as multiuser MIMO (MU-MIMO), coordinated multipoint transmission (CoMP), full-duplex communication and cognitive radio communication are being considered to improve the per-link as well as single cell and multi-cell network performance.

Radio-resource management and scheduling techniques at the MAC layer for LTE single-user and multiuser MIMO downlink and uplink are being developed to improve cell average and cell edge throughput. New architectural concepts and mechanisms such as HetNet, small cell deployments, Cloud-RAN and network sharing are being researched to optimize performance and network deployment cost. Within the mobile core, technologies such as video optimization, video/web caching and Internet offload to handle exploding mobile data traffic are being researched. In addition, CAPEX/OPEX reduction techniques such as network sharing and new revenue generating services such as operator controlled advertisements are being explored.

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