On the capacity improvement of ad hoc wireless networks using directional antennas

Su, Yi; Pei, Yong; Kalyanaraman, Shivkumar

doi:10.1145/778425.778429

Cited by 82 publications

(113 citation statements)

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“…It typically has a main beam with the peak gain and side/back lobes with smaller gain. Since to model a real antenna with precise values for main beam and side-lobes/back-lobes is difficult, we use an approximate antenna pattern, which was first proposed in [10] and has been widely used in [9], [13], [14], [18], [19]. This approximate antenna model is called cone-sphere model, in which the main beam is model as a cone and the side/back lobes are model as a small bulb at the base of the cone, as shown in Fig.…”

Section: A Antenna Modelmentioning

confidence: 99%

“…Similar to other studies [9], [13], [14], [18], [19], we ignore sidelobes and backlobes in this paper. The reasons why we simplify the model are summarized as follows.…”

Section: A Antenna Modelmentioning

confidence: 99%

“…Many recent works such as [9]- [15] found that applying directional antennas instead of omni-directional antennas to wireless networks can greatly improve the network throughput. Besides, some studies [16], [17] found that using directional antennas in wireless networks can significantly improve the network connectivity.…”

Section: Introductionmentioning

confidence: 99%

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On the connectivity of wireless networks with multiple directional antennas

Dai

Zhao

2012

2012 18th IEEE International Conference on Networks (ICON)

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Abstract-The network connectivity is one of important measures of the performance of wireless networks. However, most of current studies on the network connectivity only consider either an SOMN network, where each node is mounted with a single omni-directional antenna, or an SDA network, where each node is mounted with a single directional antenna. Using multiple directional antennas instead of a single directional antenna can potentially improve the network performance. In this paper, we investigate the connectivity of a novel network, in terms of an MDA network, where each node is mounted with multiple directional antennas. We found that MDA networks have much stronger network connectivity than other existing networks (such as SOMN and SDA networks), and its connectivity degree heavily depends on the number of antennas, the beamwidth of each antenna and the path loss factor. The enhancement mainly owes to the usage of multiple antennas and the longer transmission range of directional antennas.

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Section: A Antenna Modelmentioning

confidence: 99%

“…Similar to other studies [9], [13], [14], [18], [19], we ignore sidelobes and backlobes in this paper. The reasons why we simplify the model are summarized as follows.…”

Section: A Antenna Modelmentioning

confidence: 99%

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On the connectivity of wireless networks with multiple directional antennas

Dai

Zhao

2012

2012 18th IEEE International Conference on Networks (ICON)

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“…The capacity of wireless networks can significantly improve if directional antennas are employed at each node, due to spatial reuse and increased transmission range. The capacity of wireless mesh networks with directional antennas has been analyzed in [3]- [5]. Several transmission protocols for wireless mesh networks using directional antennas have been proposed in the literature, e.g., [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Past queue length based low-overhead link scheduling in multi-beam wireless mesh networks

Chattopadhyay

Chockalingam

2010

2010 International Conference on Signal Processing and Communications (SPCOM)

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Abstract-Wireless mesh networks with multi-beam capability at each node through the use of multi-antenna beamforming are becoming practical and attracting increased research attention. Increased capacity due to spatial reuse and increased transmission range are potential benefits in using multiple directional beams in each node. In this paper, we are interested in lowcomplexity scheduling algorithms in such multi-beam wireless networks. In particular, we present a scheduling algorithm based on queue length information of the past slots in multi-beam networks, and prove its stability. We present a distributed implementation of this proposed algorithm. Numerical results show that significant improvement in delay performance is achieved using the proposed multi-beam scheduling compared to omnibeam scheduling. In addition, the proposed algorithm is shown to achieve a significant reduction in the signaling overhead compared to a current slot queue length approach.

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“…An important application of the VSRC problem is to optimize the use of a directional antenna in a wireless network [11][12][13]. Traditionally, a wireless network uses an antenna that is omnidirectional, i.e., the signals are sent and received in all directions.…”

Section: Introductionmentioning

confidence: 99%

Variable-Size Rectangle Covering

Chin

Ting

Zhang

2009

Combinatorial Optimization and Applications

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Abstract. In wireless communication networks, optimal use of the directional antenna is very important. The directional antenna coverage (DAC) problem is to cover all clients with the smallest number of directional antennas. In this paper, we consider the variable-size rectangle covering (VSRC) problem, which is a transformation of the DAC problem. There are n points above the base line y = 0 of the two-dimensional plane. The target is to cover all these points by minimum number of rectangles, such that the dimension of each rectangle is not fixed but the area is at most 1, and the bottom edge of each rectangle is on the base line y = 0. In some applications, the number of rectangles covering any position in the two-dimensional plane is bounded, so we also consider the variation when each position in the plane is covered by no more than two rectangles. We give two polynomial time algorithms for finding the optimal covering. Further, we propose two 2-approximation algorithms that use less running time (O(n log n) and O(n)).

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On the capacity improvement of ad hoc wireless networks using directional antennas

Cited by 82 publications

References 0 publications

On the connectivity of wireless networks with multiple directional antennas

On the connectivity of wireless networks with multiple directional antennas

Past queue length based low-overhead link scheduling in multi-beam wireless mesh networks

Variable-Size Rectangle Covering

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