TY - GEN
T1 - Flexible UL/DL in Small Cell TDD Systems
T2 - IEEE VTC Spring 2015
AU - Catania, Davide
AU - Gatnau, Marta
AU - Cattoni, Andrea Fabio
AU - Frederiksen, Frank
AU - Berardinelli, Gilberto
AU - Mogensen, Preben
PY - 2015
Y1 - 2015
N2 - Time division duplex (TDD) systems offer a substantial amount of freedom to deal with downlink (DL) and uplink (UL) traffic asymmetries. Most TDD-based systems define either multiple static configurations or adaptive approaches to deal with such asymmetries. Our envisioned 5G concept embraces the flexibility brought along by TDD, and allows us to switch the link direction on a slot by slot basis. In this paper we study the interaction of Transmission Control Protocol (TCP) traffic, with a fully flexible UL/DL TDD allocation scheme. We show that flexibility is not only beneficial for exploiting the different instantaneous UL and DL variations, but also performs well with TCP traffic, where the protocol behaviour plays an important role in throughput performance. The advantages of full flexibility compared to fixed static allocations for TCP traffic are reported for both small and large payloads, and for multi-cell scenarios where both DL and UL traffic are present.
AB - Time division duplex (TDD) systems offer a substantial amount of freedom to deal with downlink (DL) and uplink (UL) traffic asymmetries. Most TDD-based systems define either multiple static configurations or adaptive approaches to deal with such asymmetries. Our envisioned 5G concept embraces the flexibility brought along by TDD, and allows us to switch the link direction on a slot by slot basis. In this paper we study the interaction of Transmission Control Protocol (TCP) traffic, with a fully flexible UL/DL TDD allocation scheme. We show that flexibility is not only beneficial for exploiting the different instantaneous UL and DL variations, but also performs well with TCP traffic, where the protocol behaviour plays an important role in throughput performance. The advantages of full flexibility compared to fixed static allocations for TCP traffic are reported for both small and large payloads, and for multi-cell scenarios where both DL and UL traffic are present.
U2 - 10.1109/VTCSpring.2015.7145843
DO - 10.1109/VTCSpring.2015.7145843
M3 - Article in proceeding
SN - 978-1-4799-8088-8
T3 - I E E E V T S Vehicular Technology Conference. Proceedings
BT - IEEE 81st Vehicular Technology Conference (VTC Spring), 2015
PB - IEEE Press
Y2 - 11 May 2015 through 14 May 2015
ER -