Proceedings ArticleDOI
Centralized scheduling for joint transmission coordinated multi-point in LTE-Advanced
Stefan Brueck,Lu Zhao,Jochen Giese,M. Awais Amin +3 more
- pp 177-184
TLDR
A centralized MAC scheduling approach for joint transmission coordinated multi-point (JT CoMP) is proposed and several cluster strategies are investigated as well, focusing on schemes that add only low complexity to the existing 3GPP LTE Release 8 system.Abstract:
Coordinated multi-point transmission/reception is considered for LTE-Advanced as a tool to improve the coverage of high data rates, the cell-edge throughput and/or to increase the system throughput [1]. Joint transmission schemes are mentioned in [1] as an example of coordinated transmission between cells for the downlink. Here, data are transmitted simultaneously either coherently or non-coherently from multiple cells to a single mobile station. In this paper, a centralized MAC scheduling approach for joint transmission coordinated multi-point (JT CoMP) is proposed. Since several base stations transmit jointly to a single mobile station, the base stations are grouped together in so-called clusters. Several cluster strategies are investigated as well. The focus is on schemes that add only low complexity to the existing 3GPP LTE Release 8 system. Simulation results are provided for non-coherent transmission for full buffer and bursty traffic models with various system loads for different static cell clustering approaches.read more
Citations
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Journal ArticleDOI
Coordinated multipoint: Concepts, performance, and field trial results
Ralf Irmer,Heinz Droste,Patrick Marsch,Michael Grieger,Gerhard Fettweis,Stefan Brueck,Hans-Peter Mayer,Lars Thiele,Volker Jungnickel +8 more
TL;DR: The principal feasibility of COMP is shown in two field testbeds with multiple sites and different backhaul solutions between the sites, and significant gains can be shown for both the uplink and downlink.
Journal ArticleDOI
Coordinated Multipoint Joint Transmission in Heterogeneous Networks
TL;DR: Numerical evaluations illustrate absolute gains in coverage probability for the general user and the worst case user compared with the noncooperative case and it is shown that no diversity gain is achieved using noncoherent joint transmission, whereas full diversity gain can be achieved at the receiver if the transmitting base stations have channel state information.
Journal ArticleDOI
LTE-advanced: an operator perspective
P. Bhat,Satoshi Nagata,L. Campoy,Ignacio Berberana,Thomas Derham,Guangyi Liu,Xiaodong Shen,Pingping Zong,Jin Yang +8 more
TL;DR: LTE-Advanced extends the capabilities originally developed in LTE within the 3GPP to cope with the many varieties of cell types and sizes, and intercell interference control is enhanced to handle these heterogeneous networks.
Journal ArticleDOI
Uplink Scheduling in LTE and LTE-Advanced: Tutorial, Survey and Evaluation Framework
TL;DR: This paper offers a tutorial on scheduling in LTE and its successor LTE-Advanced, surveys representative schemes in the literature that have addressed the scheduling problem, and offers an evaluation methodology to be used as a basis for comparison between scheduling proposals in the Literature.
Journal ArticleDOI
On the Evolution of Multi-Cell Scheduling in 3GPP LTE / LTE-A
TL;DR: This paper provides a holistic overview of multi-cell scheduling strategies in emerging wireless systems by thoroughly investigated from simple inter-cell interference coordination techniques to more advanced coordinated multipoint transmissions (CoMP), while comparing and contrasting their common features and differences.
References
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Journal ArticleDOI
Network coordination for spectrally efficient communications in cellular systems
TL;DR: This article considers network coordination as a means to provide spectrally efficient communications in cellular downlink systems and describes how the antenna outputs are chosen in ways to minimize the out-of-cell interference, and hence to increase the downlink system capacity.