Browse Prior Art Database

MULTI-STAGE SLOT SYNCHRONIZATION SCHEME FOR APC025 SLOTTED ALOHA

IP.com Disclosure Number: IPCOM000008803D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2002-Jul-15

Publishing Venue

Motorola

Related People

Authors:
Michael L. Johnson Scott J. Pappas Robert Rzepiela

Abstract

In the APCO 25 implementation of Slotted ALOHA on the trunking control channel, a sub- scriber unit must synchronize to the outbound con- trol channel (CC) prior to sending any transmission on the inbound control channel. In order to maxi- mize control channel throughput, it is critical to cor- rectly obtain synchronization so as to not collide with other users on the inbound control channel. At the same time, it is imperative that the subscriber obtain slot synchronization on the outbound control channel as quickly as possible upon arriving on this channel to enable the subscriber to register on the inbound channel.