On Dynamic Time Division Duplex Transmissions for Small Cell Networks

Validerad; 2016; Nivå 2; 2016-11-17 (andbra)
Motivated by the promising benefits of dynamic Time Division Duplex (TDD), in this paper, we use a unified framework to investigate both the technical issues of applying dynamic TDD in homogeneous small cell networks (HomSCNs), and the feasibility of introducing dynamic TDD into heterogeneous networks (HetNets). First, HomSCNs are analyzed, and a small cell BS scheduler that dynamically and independently schedules DL and UL subframes is presented, such that load balancing between the DL and the UL traffic can be achieved. Moreover, the effectiveness of various inter-link interference mitigation (ILIM) schemes as well as their combinations, is systematically investigated and compared. Besides, the interesting possibility of partial interference cancellation (IC) is also explored. Second, based on the proposed schemes, the joint operation of dynamic TDD together with cell range expansion (CRE) and almost blank subframe (ABS) in HetNets is studied. In this regard, scheduling polices in small cells and an algorithm to derive the appropriate macrocell traffic off-load and ABS duty cycle under dynamic TDD operation are proposed. Moreover, the full IC and the partial IC schemes are investigated for dynamic TDD in HetNets. The user equipment (UE) packet throughput performance of the proposed/discussed schemes is benchmarked using system-level simulations.

Lopez-Perez, DavidBell Labs Alcatel-Lucent, Dublin, Ireland (author)
Xue, RuiqiShanghai Jiao Tong University, Shanghai 200240, China (author)
Vasilakos, AthanasiosLuleå tekniska universitet,Datavetenskap(Swepub:ltu)thanos (author)
Chen, WenShanghai Key Laboratory of Navigation and Location Based Services, Shanghai Jiao Tong University, Shanghai 200240, China; School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China (author)
Data 61, AustraliaBell Labs Alcatel-Lucent, Dublin, Ireland (creator_code:org_t)

In:IEEE Transactions on Vehicular Technology65:11, s. 8933-89510018-95451939-9359

By the author/editor: Ding, Ming; Lopez-Perez, Dav ...; Xue, Ruiqi; Vasilakos, Athan ...; Chen, Wen

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Computer and Inf ...; and Media and Commun ...

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