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The expected massive adoption of home femto base stations will increase the overall power consumption, requiring eco-designed sleep modes. Whenever there are no user under the coverage of a home femto base station (at night for example), keeping it on can be seen as a waste of power, excessive interferences and lack of security. This paper proposes a method to switch-off the femto base station radio...
In the last few years, long-distance WiFi networks have been used to provide Internet connectivity in rural areas. The strong requirement to support real-time applications in these settings leads us to consider TDMA link scheduling. In this paper, we consider the FRACTEL architecture for long-distance mesh networks. We propose a novel angular interference model, which is not only practical, but also...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
Wireless mesh network (WMN) has become a popular access network architecture. But because of its multi-hop nature, co-channel interference and contention, the attainable capacity of a wireless node in a WMN is significantly less than the radio capacity. We propose a overlay architecture for a WMN, where a wireless-ring (WRing) is deployed over the regular mesh for carrying wireless mesh traffic only...
In this work, we focus on a WLANs mesh, i.e., an ad hoc, IEEE 802.11-based network whose nodes are either user devices or access points providing access to the mesh network or to the Internet. By relying on some work about IEEE 802.11 MAC analysis, we consider mesh-DQDC protocol and present an analytical model of the MAC scheme, through which we show that the protocol achieves high throughput both...
In this paper, we propose an adaptive pacing scheme at the link layer for IEEE 802.11 based multihop wireless networks. Our objective is to improve the performance of higher layer protocols without any modifications to them. Our adaptive pacing scheme estimates the four-hop transmission delay in the network path without incurring any additional overheads, and accordingly paces the packets to reduce...
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