Dynamic TDD support in the LTE-B enhanced Local Area architecture

B, Yu; Mukherjee, Sayandev; Ishii, Hiroyuki; Yang, Liuqing

doi:10.1109/glocomw.2012.6477639

Cited by 58 publications

(66 citation statements)

References 7 publications

(9 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nevertheless, recent works [2]- [7] have demonstrated that the presence of interference motivates the joint consideration of UL and DL, since the interference caused by a link on other links is different depending on the direction in which the link is active, i.e., on which node acts as the transmitter. Specifically, the referenced works have studied dynamic Time Division Duplex (TDD) for small-cell wireless systems.…”

Section: Introductionmentioning

confidence: 99%

Interference Spins: Scheduling of Multiple Interfering Two-Way Wireless Links

Popovski

Simeone²,

Nielsen³

et al. 2015

IEEE Commun. Lett.

View full text Add to dashboard Cite

Abstract-Two-way is a dominant mode of communication in wireless systems. Departing from the tradition to optimize each transmission direction separately, recent work has demonstrated that, for time-division duplex (TDD) systems, optimizing the schedule of the two transmission directions depending on traffic load and interference condition leads to performance gains. In this letter, a general network of multiple interfering two-way links is studied under the assumption of a balanced load in the two directions for each link. Using the notion of interference spin, we introduce an algebraic framework for the optimization of twoway scheduling, along with an efficient optimization algorithm that is based on the pruning of a properly defined topology graph and dynamic programming. Numerical results demonstrate multi-fold rate gains with respect to baseline solutions, especially for worst-case (5%-ile) rates.

show abstract

Section: Introductionmentioning

confidence: 99%

Interference Spins: Scheduling of Multiple Interfering Two-Way Wireless Links

Popovski

Simeone²,

Nielsen³

et al. 2015

IEEE Commun. Lett.

View full text Add to dashboard Cite

show abstract

“…Also, P 0 = 0 is adopted in all simulation results 7 . Unless specified otherwise, we assume 50 dB of self-interference cancellation 8 …”

Section: Simulation Resultsmentioning

confidence: 99%

“…For the CAS, we assume that there is only one BS located at the center of the system, which is equipped with the same number of antennas as all FD BSs in the 7 We note that the value of P0 does not affect the resource allocation algorithm design. 8 We assume a balun analog circuit is implemented in the FD radio BSs which can cancel 50 dB of self-interference [11].…”

Section: Simulation Resultsmentioning

confidence: 99%

Power Efficient Resource Allocation for Full-Duplex Radio Distributed Antenna Networks

Schober

2016

IEEE Trans. Wireless Commun.

123

107

View full text Add to dashboard Cite

In this paper, we study the resource allocation algorithm design for distributed antenna multiuser networks with full-duplex (FD) radio base stations (BSs) which enable simultaneous uplink and downlink communications. The considered resource allocation algorithm design is formulated as an optimization problem taking into account the antenna circuit power consumption of the BSs and the quality of service (QoS) requirements of both uplink and downlink users. We minimize the total network power consumption by jointly optimizing the downlink beamformer, the uplink transmit power, and the antenna selection. To overcome the intractability of the resulting problem, we reformulate it as an optimization problem with decoupled binary selection variables and non-convex constraints. The reformulated problem facilitates the design of an iterative resource allocation algorithm which obtains an optimal solution based on the generalized Bender's decomposition (GBD) and serves as a benchmark scheme. Furthermore, to strike a balance between computational complexity and system performance, a suboptimal algorithm with polynomial time complexity is proposed. Simulation results illustrate that the proposed GBD based iterative algorithm converges to the global optimal solution and the suboptimal algorithm achieves a close-to-optimal performance. Our results also demonstrate the trade-off between power efficiency and the number of active transmit antennas when the circuit power consumption is taken into account. In particular, activating an exceedingly large number of antennas may not be a power efficient solution for reducing the total system power consumption. In addition, our results reveal that FD systems facilitate significant power savings compared to traditional half-duplex systems, despite the non-negligible self-interference.

show abstract

“…This requires flexible (re)allocation schemes to ensure efficient usage of spectrum resources. One of these schemes is dynamic time division duplex (TDD) that shares all the time slots between the UL and the DL with flexible slot reconfiguration [63]. Semi-static variations of this technique have already been implemented in current standard, for example the LTE defines seven UL/DL slot configurations [64].…”

Section: Scalability and Reconfigurationmentioning

confidence: 99%

Control-Data Separation Architecture for Cellular Radio Access Networks: A Survey and Outlook

Mohamed

Onireti

Imran

et al. 2016

IEEE Commun. Surv. Tutorials

123

112

View full text Add to dashboard Cite

Abstract-Conventional cellular systems are designed to ensure ubiquitous coverage with an always present wireless channel irrespective of the spatial and temporal demand of service. This approach raises several problems due to the tight coupling between network and data access points, as well as the paradigm shift towards data-oriented services, heterogeneous deployments and network densification. A logical separation between control and data planes is seen as a promising solution that could overcome these issues, by providing data services under the umbrella of a coverage layer. This article presents a holistic survey of existing literature on the control-data separation architecture (CDSA) for cellular radio access networks. As a starting point, we discuss the fundamentals, concept and general structure of the CDSA. Then, we point out limitations of the conventional architecture in futuristic deployment scenarios. In addition, we present and critically discuss the work that has been done to investigate potential benefits of the CDSA, as well as its technical challenges and enabling technologies. Finally, an overview of standardisation proposals related to this research vision is provided.

show abstract

Dynamic TDD support in the LTE-B enhanced Local Area architecture

Cited by 58 publications

References 7 publications

Interference Spins: Scheduling of Multiple Interfering Two-Way Wireless Links

Interference Spins: Scheduling of Multiple Interfering Two-Way Wireless Links

Power Efficient Resource Allocation for Full-Duplex Radio Distributed Antenna Networks

Control-Data Separation Architecture for Cellular Radio Access Networks: A Survey and Outlook

Contact Info

Product

Resources

About