Multiple frequency reuse schemes in the two-hop IEEE 802.16j wireless relay networks with asymmetrical topology

Wang, Weiwei; Guo, Zihua; Cai, Jun; Shen, Xuemin; Chen, Changjia

doi:10.1016/j.comcom.2009.02.001

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…As the extension of the current standards (IEEE802.16d and IEEE802.16e), IEEE 802.16j aims at defining the multi-hop relay specification including the MAC and the physical (PHY) layers (Fig. 1) [4].…”

Section: Simulation Of Ieee 80216j Mobile Wimax Relay Networkmentioning

confidence: 99%

“…It is investigated when signal is modulated with QPSK (Quadrature Phase-Shift Keying) and QAM (Quadrature amplitude modulation) modulation [5]. [4,5] According to the newest baseline document [4], two modes, non-transparent mode and transparent mode, are specified in table 1 to support those application scenarios. IEEE 802.16j is a new standard and no such products are available yet in the market for researchers to evaluate its performances.…”

Section: Simulation Of Ieee 80216j Mobile Wimax Relay Networkmentioning

confidence: 99%

“…The new WiMAX standard first uses relay stations (RS) for better service quality. Published works analyses relay stations influence to the quality of service, as well as analyses relay stations resource distribution and management, creating network topology for better service quality [1][2][3][4]. However there are no specific studies done to determine most efficient zone to deploy RS.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of IEEE 802.16j Mobile WiMAX Relay Network to Determine the Most Efficient Zone to Deploy Relay Station

Bulbenkienė

Pareigis

Andziulis

et al. 2011

ElAEE

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Section: Simulation Of Ieee 80216j Mobile Wimax Relay Networkmentioning

confidence: 99%

Section: Simulation Of Ieee 80216j Mobile Wimax Relay Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of IEEE 802.16j Mobile WiMAX Relay Network to Determine the Most Efficient Zone to Deploy Relay Station

Bulbenkienė

Pareigis

Andziulis

et al. 2011

ElAEE

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“…For transparent relay networks, the study [17] leverages channel diversity and spatial reuse to increase network throughput. Reference [20] the channel to improve network throughput. The work [14] adopts a Markov decision process for admission control and a chance-constrained assignment scheme to place the minimum RSs while maximizing their transmission rates.…”

Section: Introductionmentioning

confidence: 99%

Efficient resource allocation for energy conservation in uplink transmissions of IEEE 802.16j transparent relay networks

Liang

Wang

Chen

et al. 2010

Proceedings of the 13th ACM International Conference on Modeling, Analysis, and Simulation of Wireless and Mobile Systems

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By introducing the relay capability, the IEEE 802.16j standard is developed to improve the WiMAX performance. Under the transparent mode, existing studies aim at improving network throughput by increasing the transmission rates of mobile stations (MSs). However, we show that using higher rates will let MSs consume more energy. In the paper, we define an energy-conserved uplink resource allocation (EURA) problem in 802.16j networks under the transparent mode, which asks how to arrange the uplink resource to 1) satisfy MSs' requests and 2) minimize their energy consumption. Objective 1 is necessary while objective 2 should be achieved when objective 1 is met. The above bi-objective problem is especially important when the network is nonsaturated. The EURA problem is NP-hard and we propose a heuristic with two key designs. First, we exploit relay stations to allow more concurrent uplink transmissions to fully use the frame space. Second, we reduce MSs' transmission powers by adjusting their rates and paths. Simulation results show that our heuristic can save up to 80% of MSs' energy as compared with existing work.

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“…Previous modelings [3,4,5,6,7] are not comprehensive since they deal with a subset of our modeling parameters. Table I summarizes the parameters used in previous modelings as well as our modeling.…”

Section: Introductionmentioning

confidence: 99%

Optimizing downlink throughput of IEEE 802.16j wireless relay networks via parameterized modeling

Hyun

Jang

2010

IEICE Electron. Express

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Abstract:We propose a parameterized modeling technique for wireless relay networks based on IEEE 802.16j standard operating in nontransparent mode. Our modeling is able to represent the downlink throughput in a concise closed form and thus very useful for predicting the downlink system throughput with a few estimated parameters. The key parameters include α which represents how much portion of the whole data from MR-BS to be transmitted over access link without going through relays (0 ≤ α ≤ 1). Another key parameter is r, which determines how much portion of DL (down link) zone is used for access (0 ≤ r ≤ 1). We also add a parameter θ i , which determines how much portion of the data to be relayed via RSi (0 ≤ θ i ≤ 1). Our contribution lies in that our formula can be used to estimate the expected downlink system throughput without going through extensive simulation in the early design stage for IEEE 802.16j relay systems. Optimization can be easily performed using our formula.

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Multiple frequency reuse schemes in the two-hop IEEE 802.16j wireless relay networks with asymmetrical topology

Cited by 4 publications

References 8 publications

Simulation of IEEE 802.16j Mobile WiMAX Relay Network to Determine the Most Efficient Zone to Deploy Relay Station

Simulation of IEEE 802.16j Mobile WiMAX Relay Network to Determine the Most Efficient Zone to Deploy Relay Station

Efficient resource allocation for energy conservation in uplink transmissions of IEEE 802.16j transparent relay networks

Optimizing downlink throughput of IEEE 802.16j wireless relay networks via parameterized modeling

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