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Browse Prior Art Database

AUTOMATED SYSTEM CHANNEL ACCESS TIMER CALCULATION

IP.com Disclosure Number: IPCOM000007683D
Original Publication Date: 1996-May-01
Included in the Prior Art Database: 2002-Apr-15

Publishing Venue

Motorola

Related People

Authors:
Mike Korus

Abstract

Channel access rules become necessary in dig- ital communication systems that require subscriber access to inbound RF channels. Many digital sys- terns employ DSMA (digital sense multiple access) algorithms. DSMA provides a mechanism to indicate the inbound channel status (busy, idle or unknown) on outbound RF channels. This infor- mation is used by the subscribers to determine the state ofthe inbound channel. Monitoring the inbound channel status allows subscribers to be "polite" to other users. The rate at which status bit indications are sent is called the slot time. Slot time depends on the system delay (i.e. system turn around time of channel status bits). An example is illustrated below.