Coexistence of multiple wireless body area networks (WBAN) is a very challenging problem because piconets move frequently and each piconet can have hundreds of sensors. The IEEE 802.15.6 task group is developing a standard based on superframe-level frequency-hopping scheme, which is a good solution to the piconet coexistence problem without requiring coordination between piconets. However, its spectrum efficiency is very low when only a single piconet is operating. In this paper we propose a superframe-level time-hopping scheme with variable contention access period. Compared to the frequency-hopping scheme, the proposed scheme has similar interference mitigation capability, but can achieve significant improvement in energy consumption, latency and spectrum efficiency.
|Title of host publication||2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'11|
|Number of pages||5|
|Publication status||Published - 2011|
|Event||2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'11 - Toronto, ON, Canada|
Duration: 11 Sep 2011 → 14 Sep 2011
|Other||2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'11|
|Period||11/09/11 → 14/09/11|