Interference-aware Power Coordination Game for ISM Bands

Abstract

The use of wireless equipment in the alreadyovercrowded ISM bands had been further growing in recent years. This increase leads to high interference levels, which causes unstable communication and an average throughput reduction in heavily-used channels. This calls for more robust, interference-aware means of channel-access for Wi-Fi and similar wireless devices in ISM bands. In this paper, we propose a Game Theory (GT) based power allocation mechanism for IEEE 802.11 networks, which might incorporate some aspects of Cognitive Radio (CR) functionality. Up to now operation of 802.11 devices was constrained by regulations in terms of maximum transmission power, in order to limit the extent of interference from uncoordinated emissions. Our proposed mechanism, with its feasibility backed by the practical experimentation reported in this paper, would allow embracing lighter regulatory rules or complete abolition of power limits for unlicensed access in ISM bands. Moreover, our proposed concept of channel access based on power balancing game might also make unnecessary the use of CSMA/CA protocol.

Frequency hopping in IEEE 802.15.4 to mitigate IEEE 802.11 interference and fading

“…A new cooperation method called cooperative channel segmentation (CCS) was proposed in [29], between IEEE 802.11 wireless local area network (WLAN) and bluetooth based wireless personal area network (WPAN), which operates in the 2.4 GHz ISM band. A game theory-based power allocation mechanism was proposed in [30] for IEEE 802.11 networks in ISM bands, which might incorporate some aspects of cognitive radio functionality. A cross-layer design that used PHY characteristics of 802.15.4 signals to deal with cross-technology interference was investigated in [31].…”

Optimum Design Parameters for Ultra-Low-Power RF Transceivers in Wireless Sensor Networks

“…The key considerations that drive the competition in the market of wireless sensor networks (WSNs) are cost, size and power consumption. In research, the latter is considered to be the most important factor as it essentially determines the size of the battery that must be used to power the sensor node, and, accordingly, the overall size of the node itself [1]. Additionally, the power consumption drastically influences the lifetime of the sensor nodes, whose batteries cannot be recharged or even replaced once they are depleted, as this would not be costefficient for large networks.…”

Ultra-narrowband communications : a feasibility study for the 2.4 gHz band

“…The key aspects that drive the competition in the wireless sensor market (WSN) market are cost, size and power consumption of the sensor nodes. Fundamentally, the latter aspect is considered the most important as it essentially determines the size of the battery that must be used to power the sensor node and, thereby, the overall size of the node itself [116]. Additionally, the power consumption drastically influences the lifespan of the sensor nodes, whose batteries cannot be recharged or even replaced once they are depleted, as this would not be cost-efficient for large-scale networks.…”