SLOT SYNCHRONIZATION IN ASTRO SITE STEERED TRANSMISSIONS
Original Publication Date: 2002-Aug-02
Included in the Prior Art Database: 2002-Aug-02
Astroä Simulcast systems use site steering, a method to transmit data packets from only the specified sub-site while all adjacent sub-sites remain de-keyed in order to improve packet data throughput performance. During a site steered transmission, it is desirable to shorten the transmit slot size since the transmitting station updates the busy bits and does so more quickly than the comparator in simulcast transmissions. The faster busy bit turnaround time allows faster access on the inbound channel by the subscriber radios. The transmit slot times are kept larger for simulcast transmissions in order to account for worst case throughput delay of the infrastructure.