RIA: An RF Interference Avoidance Algorithm for Heterogeneous Wireless Networks

Devices with multiple wireless interfaces are becoming increasingly popular. The authors envision that these devices will become the building block for future mesh networks, providing seamless connectivity across a range of heterogeneous devices. Although these devices typically implement frequency sharing, using either Direct Sequence Spread Spectrum (DSSS) or Frequency Hopping Spread Spectrum (FHSS), they may still interfere with one another. This paper provides a novel Radio Interference Avoidance (RIA) algorithm that solves the problem of interference between IEEE 802.11 and Bluetooth. The authors then extend this algorithm to other types of DSSS and FHSS combinations.