Coexistence mechanisms for legacy and next generation wireless networks protocols
Alex Hsu · University of Southern California Digital Library · 2012
Effective usage of unlicensed bands (UB) has received a lot of attention due to its potential in ubiquitous computing and networking. One key issue in effective UB usage is the coexistence among devices of homogeneous or heterogeneous systems, e.g. wireless local area networks (WLAN) and wireless personal area networks (WPAN). To resolve the coexistence problem, we need to understand the interaction between concurrent transmissions in overlapping frequency bands. Although some basic interference resolving process is mentioned in the standards, further performance improvement can be achieved by careful system analysis and parameter selection. In this research, we analyze the coexistence problem that these systems face and devise coexistence mechanisms to enhance performance.