Institute of Computer Science Academy of Sciences of the Czech Republic On the Power of Broadcasting in Mobile Computing Jiˇ r´ ı Wiedermann and Dana Pardubsk´ a Technical report No. 944 October 2005 Pod Vod´ arenskou vˇ eˇ z´ ı 2, 182 07 Prague 8, phone: (+4202) 6605 3520, fax: (+4202) 86 585 789, e-mail:jiri.wiedermann@cs.cas.cz