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IMPROVED SLOT SYNCHRONIZATION SCHEME FOR APC02fi SLOTTED ALOHA

IP.com Disclosure Number: IPCOM000008860D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2002-Jul-18
Document File: 2 page(s) / 105K

Publishing Venue

Motorola

Related People

Authors:
Robert Rzepiela Michael L. Johnson Robert Biggs

Abstract

INTRODUCTION Before transmitting on an APCO-25 trunked system, Subscriber Units (SU) must acquire frame synchronization and slot synchronization. Slot syn- chronization consists of obtaining the slot size and boundary locations of the control channel. This is a time consuming process which directly effects the Trunking System Access equation, which is used to specify system performance. From a performance standpoint, it is best to minimize the slot synchro- nization time. Currently, it is estimated that the slot synchronization procedure within Motorola Subscriber Units will account for approximately 70% of the total control channel lock time.