Power-efficient mobile backhaul design for CoMP support in future wireless access systems

Scalia, Luca; Biermann, Thorsten; Choi, Changsoon; Kozu, Kazuyuki; Kellerer, Wolfgang

doi:10.1109/infcomw.2011.5928819

Cited by 14 publications

(9 citation statements)

References 10 publications

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“…The semi-distributed architecture, introduced in [29] and [30], is depicted in Figure 3. Under this architecture, each user feeds back the CSI vector to its serving TN.…”

Section: Semi-distributed Comp Architecturementioning

confidence: 99%

On the impact of control channel reliability on coordinated multi-point transmission

Mayer

Papadogiannis

et al. 2014

J Wireless Com Network

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In the heterogeneous networks (HetNets), co-channel interference is a serious problem. Coordinated multi-point (CoMP) transmission has emerged as a powerful technique to mitigate co-channel interference. However, all CoMP techniques rely on information exchange through reliable control channels, which are unlikely to be available in HetNets. In this paper, we study the effect of unreliable control channels, consisting of the access links and backhaul links, on the performance of CoMP. A control channel model is introduced by assigning link failure probability (LFP) to backhaul and access links for the cooperative clusters. Three CoMP architectures, namely the centralized, semi-distributed, and fully distributed are analyzed. We investigate the probability of deficient control channels reducing quality of service and impeding transmission. General closed form expressions are derived for the probability of a cooperative transmission node staying silent in a resource slot due to unreliable control links. By evaluating the average sum rate of users within a CoMP cluster, we show that the performance gains offered by CoMP quickly diminish, as the unreliability of the control links grows.

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“…The semi-distributed architecture, introduced in [29] and [30], is depicted in Figure 3. Under this architecture, each user feeds back the CSI vector to its serving TN.…”

Section: Semi-distributed Comp Architecturementioning

confidence: 99%

On the impact of control channel reliability on coordinated multi-point transmission

Mayer

Papadogiannis

et al. 2014

J Wireless Com Network

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“…In semi-distributed architecture [40], each BS receives local CSI reports directly from its serving UE and also gets N-1 non-local CSI vectors from other N-1 coordinated BSs (assumed that CoMP set consists of N number of BSs) via X2 interface. However, based on the all gathered CSI reports, each cooperating BS acts as a CU, independently designs its own precoding matrix or scheduling decisions and also power allocation vector and send to UE [41,42].…”

Section: Semi-distributed Comp Architecturementioning

confidence: 99%

On the Evolution of Coordinated Multi-Point (CoMP) Transmission in LTE-Advanced

Ali¹

2014

IJFGCN

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“…The performance is degraded significantly due to the imperfect channel state information caused by packet delay and losses over the backhaul network [6].…”

Section: System Models a Coordinated Multipoint (Comp) Communicamentioning

confidence: 99%

“…However, since channel state information from all involved cells is needed in CoMP systems, practical systems that employ CoMP techniques suffer from constraints imposed by the backhaul network, which is used to exchange channel state information from all involved cells. Backhaul networks are constrained in capacity, and introduce lost and/or outdated channel state information, which will result in performance degradation of CoMP systems [6,7].…”

Section: Introductionmentioning

confidence: 99%

Predictive Control for Energy Efficiency in Wireless Cellular Networks

Wen

2012

2012 IEEE 75th Vehicular Technology Conference (VTC Spring)

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Coordinated multipoint (CoMP) communication is a new method that improves energy efficiency, extends cell coverage, and increases capacity in cellular networks. However, since channel state information from the involved cells is needed in CoMP systems, practical systems that employ CoMP techniques suffer from constraints imposed by the backhaul network. In this paper, we take a novel approach to study the energy efficiency issues in cooperative wireless cellular networks with CoMP communications. Specifically, to derive the base station grouping decisions for energy-efficient transmissions in CoMP, we use stochastic predictive control algorithm. Simulation results are presented to show the effectiveness of the proposed scheme.

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Power-efficient mobile backhaul design for CoMP support in future wireless access systems

Cited by 14 publications

References 10 publications

On the impact of control channel reliability on coordinated multi-point transmission

On the impact of control channel reliability on coordinated multi-point transmission

On the Evolution of Coordinated Multi-Point (CoMP) Transmission in LTE-Advanced

Predictive Control for Energy Efficiency in Wireless Cellular Networks

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