Resource management policies for fixed relays in cellular networks

Park, Won-Hyoung; Bahk, Saewoong

doi:10.1016/j.comcom.2008.11.039

Cited by 48 publications

(38 citation statements)

References 9 publications

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“…SYSTEM MODEL Our network topology is based on the multihop cellular network (MCN) model used in emerging BWA networks [26]. As shown in Fig.…”

Section: Contributions and Organizationmentioning

confidence: 99%

“…To be specific, we use the following variation of the protocol model, used to accurately mimic the behavior of CSMA/CA relay based cellular networks [26]. Let R ).…”

Section: A Interference Modelmentioning

confidence: 99%

“…To check the satisfaction of a demand, the following linear program (LP) (Eqs. [23][24][25][26][27], referred to as Problem C, is solved for each demand, d…”

Section: Problem Bmentioning

confidence: 99%

See 2 more Smart Citations

Multipath Routing and Max-Min Fair QoS Provisioning under Interference Constraints in Wireless Multihop Networks

Thulasiraman

Chen

Shen

2011

IEEE Trans. Parallel Distrib. Syst.

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In this paper, we investigate the problem of flow routing and fair bandwidth allocation under interference constraints for multihop wireless networks. We first develop a novel isotonic routing metric, RI 3 M , considering the influence of inter-flow and intra-flow interference. The isotonicity of the routing metric is proved using virtual network decomposition. Second, in order to ensure QoS, an interference-aware max-min fair bandwidth allocation algorithm, LMX:M 3 F , is proposed where multiple paths (determined by using the routing metric) coexist for each user to the base station. In order to solve the algorithm, we develop an optimization formulation that is modeled as a multicommodity flow problem where the lexicographically largest bandwidth allocation vector is found among all optimal allocation vectors while considering constraints of interference on the flows. We compare our RI 3 M routing metric and LMX:M 3 F bandwidth allocation algorithm with various interference based routing metrics and interference aware bandwidth allocation algorithms established in the literature. We show that RI 3 M and LMX:M 3 F succeed in improving network performance in terms of delay, packet loss ratio and bandwidth usage.

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“…SYSTEM MODEL Our network topology is based on the multihop cellular network (MCN) model used in emerging BWA networks [26]. As shown in Fig.…”

Section: Contributions and Organizationmentioning

confidence: 99%

“…To be specific, we use the following variation of the protocol model, used to accurately mimic the behavior of CSMA/CA relay based cellular networks [26]. Let R ).…”

Section: A Interference Modelmentioning

confidence: 99%

See 1 more Smart Citation

Multipath Routing and Max-Min Fair QoS Provisioning under Interference Constraints in Wireless Multihop Networks

Thulasiraman

Chen

Shen

2011

IEEE Trans. Parallel Distrib. Syst.

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“…However, in two hop networks, MSs can access to BSs or FRSs, thus path selection based on channel state is needed. In order to reduce the signaling overhead, the path selection can be carried out by MSs [11]. In the BBRS system, FRSs broadcast the mean CINR of each sub-channel on BS-FRS link, i.e., Γ BF .…”

Section: B Path Selection Strategymentioning

confidence: 99%

Bilayer Beams and Relay Sharing based OFDMA Cellular Architecture

Pan

Han

Zhang

et al. 2011

IJCNIS

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Abstract-Over the past decade, researchers have been putting a lot of energy on co-channel interference suppression in the forthcoming fourth generation (4G) wireless networks. Existing approaches to interference suppression are mainly based on signal processing, cooperative communication or coordination techniques. Though good performance has been attained already, a more complex receiver is needed, and there is still room for improvement through other ways.Considering spatial frequency reuse, which provides an easier way to cope with the co-channel interference, this paper proposed a bilayer beams and relay sharing based (BBRS) OFDMA cellular architecture and corresponding frequency planning scheme. The main features of the novel architecture are as follows. Firstly, the base station (BS) uses two beams, one composed of six wide beams providing coverage to mobile stations (MSs) that access to the BS, and the other composed of six narrow beams communicating with fixed relay stations (FRSs). Secondly, in the corresponding frequency planning scheme, soft frequency reuse is considered on all FRSs further. System-level simulation results demonstrate that better coverage performance is obtained and the mean data rate of MSs near the cell edge is improved significantly. The BBRS cellular architecture provides a practical method to interference suppression in 4G networks since a better tradeoff between performance and complexity is achieved.

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“…Therefore, spatial independency (SI) has been studied, in attempts to enhance the system capacity [3][4]. In [3] and [4], resource reuse for non-adjacent RSs is performed and different reuse sets are allocated equal share of resources in time and frequency domains, respectively. However, these studies can only be used for fixed and symmetrically planned relay networks.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Resource Reuse Scheduling for Multihop Relay Wireless Network Based on Multicoloring

Guo

et al. 2008

IEEE Commun. Lett.

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Abstract-In this paper, an adaptive resource reuse scheduling (ARRS) algorithm is presented with the goal of enhancing the system capacity for relay networks, which supports arbitrary topology and relay stations (RSs) mobility. Since one key step in ARRS is modeled as graph multicoloring, a fast ∆+1 2 -approximation algorithm named dual sorting greedy (DSG) is provided for the problem. Simulation results show that ARRS achieves high system capacity and hence satisfies the multimedia service QoS requirements of relay networks efficiently.

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Resource management policies for fixed relays in cellular networks

Cited by 48 publications

References 9 publications

Multipath Routing and Max-Min Fair QoS Provisioning under Interference Constraints in Wireless Multihop Networks

Multipath Routing and Max-Min Fair QoS Provisioning under Interference Constraints in Wireless Multihop Networks

Bilayer Beams and Relay Sharing based OFDMA Cellular Architecture

Adaptive Resource Reuse Scheduling for Multihop Relay Wireless Network Based on Multicoloring

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