A mobile telephone system multiplexes plural voice traffic channels on a single carrier using a TDMA protocol. The capacity of the mobile telephone system is increased by assigning voice traffic capacity, not on a conversation basis, but on a speech spurt basis. Accordingly, delays of undetermined duration...http://www.google.de/patents/US5357513?utm_source=gb-gplus-sharePatent US5357513 - Transmission power level adjustment in radio telephony
