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ACTIVE DTE RECOVERY FROM SUSPEND

IP.com Disclosure Number: IPCOM000009577D
Original Publication Date: 1999-Sep-01
Included in the Prior Art Database: 2002-Sep-04

Publishing Venue

Motorola

Related People

Authors:
Behzad Bamdad Wayne Lindemann Steve Surwillo

Abstract

In wireless, mobile data systems, such as Motorola's Private DataTAC system, messages flow from a fixed-location computer, through a radio net- work infrastructure, to a fleet of radio modems. Each radio modem is connected to a mobile comput- er (also known as Data Terminal Equipment or DTE). The protocol used on the radio channel will vary depending on the system, however, most are like Motorola's Radio Data Link Access Procedure (RD-LAP) in that they use a mechanism for posi- tively acknowledging (ACK'ing) successfully deliv- ered messages and negatively acknowledging (NACK'ing) those that are unsuccessfully delivered.