An Effective MAC Scheme Based on Large Interference Range in Mobile Ad Hoc Networks

Shan, Jian‐Feng; Chen, Zheng; Wang, Hui; Yu, Nenghai

doi:10.1109/icmlc.2007.4370499

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…It is essential to retain high power efficiency in quest for practical solutions to the large interference range problem. Recently, Shan, et al had proposed the probabilistic CTS reply (PCR) scheme to overcome the conservativeness problem of CCR [17]. In their stochastic scheme, in response to an incoming RTS, CTS is replied with a probability 1 À P I , where P I denotes the interference probability.…”

Section: The Large Interference Problem and Related Workmentioning

confidence: 99%

A power efficient solution to the large interference range problem in ad hoc networks

Lai

Hsu-Sheng

et al. 2008

Wireless Communications

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Due to the mismatch between the transmission range and interference-vulnerable range, the reception at a receiving node in a wireless network could still be interfered by a sending node beyond the coverage of its clear-tosend (CTS). This is the so-called large interference range problem. It is a common problem in real environments but overlooked by the standards and related studies. The large interference range problem could lead to transmission control protocol (TCP) instability and TCP unfairness, especially in case of multi-hop transmission. There exist research works devoted to this issue. However, more power consumption was incurred at the same time. For a power-efficient solution to this problem, a novel scheme, named power control interference avoidance (PCIA), is developed and presented in this article. The proposed scheme decouples control channel from data channel and use different power level in the transmission of control frames and data frames. By doing so, the large interference problem can be effectively avoided, while retaining a high level of power efficiency. The feasibility and effectiveness of the proposed scheme had been validated by an analytic study on a simplified model and a series of simulations. As revealed in the simulation results, the proposed PCIA scheme outperforms conservative CTS reply (CCR) and IEEE 802.11 in many aspects, including data corruption ratio and power efficiency.

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Section: The Large Interference Problem and Related Workmentioning

confidence: 99%

A power efficient solution to the large interference range problem in ad hoc networks

Lai

Hsu-Sheng

et al. 2008

Wireless Communications

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“…In [6], [24], the transmission range (or area of coverage) is assumed to be equal to the interference range. However, in practice, some nodes may still interfere with the receiver even when the receiver is outside the transmission ranges of these nodes [20]. In our work, we relax this assumption so that the interference range can be larger than the transmission range and focus on the transmission radius control analysis in wireless ad hoc networks using smart antennas.…”

Section: Introductionmentioning

confidence: 99%

Transmission Radius Control in Wireless Ad Hoc Networks with Smart Antennas

Huang¹,

Leung²,

Li³

2010

IEEE Trans. Commun.

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In this paper, we present a model to analyze the performance of three transmission strategies with smart antennas, i.e. directional antennas with adjustable transmission power. Generally, a larger transmission radius contributes a greater progress if a transmission is successful. However, it has a higher probability of collision with other concurrent transmissions. Smart antennas mitigate collisions with sectorized transmission ranges. They also extend the transmission radii. By modelling three transmission strategies, namely, Nearest with Forward Progress (NFP), Most Forward with Fixed Radius (MFR), and Most Forward with Variable Radius (MVR), our analysis illustrates that the use of smart antennas can greatly reduce the possibility of conflicts. The model considers the interference range and computes the interference probability for each transmission strategy. We have analyzed two Medium Access Control (MAC) protocols using our interference model, namely, the slotted ALOHA protocol and the slotted CSMA/CAlike protocol. The result shows that, for slotted ALOHA, NFP yields the best one-hop throughput, whereas MVR provides the best average forward progress. The overall performance is substantially improved with the slotted CSMA/CA-like protocol, and the network becomes more resilient.

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“…Furthermore, the transmission range is assumed to be equal to the interference range in [3], [10]. However, considering the signal propagation, some nodes may still interfere with the receiver even if these nodes are out of the transmission ranges of both transmitter and receiver [8]. In our work, we assume that the interference range is larger than the transmission range.…”

Section: Introductionmentioning

confidence: 99%

Adjustable Transmission Power in Wireless Ad Hoc Networks with Smart Antennas

Huang¹,

Li²,

Leung³

2008

IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference

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In this paper, we present a model to analyze the performance of wireless ad hoc networks with smart antennas, i.e. directional antennas with adjustable transmission power. Our results show that smart antennas can improve the network performance by mitigating the effects of interference. We illustrate our model with the NFP (Nearest with Forward Progress) transmission strategy. Our analytical and simulation results show that, for ad hoc networks with smart antennas, NFP yields good throughput and remains stable as the node density varies.

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An Effective MAC Scheme Based on Large Interference Range in Mobile Ad Hoc Networks

Cited by 5 publications

References 9 publications

A power efficient solution to the large interference range problem in ad hoc networks

A power efficient solution to the large interference range problem in ad hoc networks

Transmission Radius Control in Wireless Ad Hoc Networks with Smart Antennas

Adjustable Transmission Power in Wireless Ad Hoc Networks with Smart Antennas

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