Browse Prior Art Database

REMOTE SYSTEM ACKNOWLEDGE RESPONSE TIME MEASUREMENT

IP.com Disclosure Number: IPCOM000006658D
Original Publication Date: 1992-Dec-01
Included in the Prior Art Database: 2002-Jan-21
Document File: 1 page(s) / 61K

Publishing Venue

Motorola

Related People

John Major: AUTHOR [+3]

Abstract

The first indication that something might be wrong with the network, be it tethered or untethered, is user perceived delay in response time. If a delay is chronic then LAN network analyzers are employed to identify and locate the problem. However, this measurement is indirect and may not give the network operator infor- mation that allows him to measure user perceived response.

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MO~RO&A INC. Technical Developments Volume 17

December 1992

REMOTE SYSTEM ACKNOWLEDGE

RESPONSE TIME MEASUREMENT

by John Major, Bob Epsom and Gil Santos

  The first indication that something might be wrong with the network, be it tethered or untethered, is user perceived delay in response time. If a delay is chronic then LAN network analyzers are employed to identify and locate the problem. However, this measurement is indirect and may not give the network operator infor- mation that allows him to measure user perceived response.

  RF networks present more challenging problems. Analyzers that sit on the ether are subject to all of the RF propagation and interference issues that RF subscribers are experiencing. However, as with individ- ual units, their unique experience of the network may ditfer from the actual subscriber unit or subscriber unit population. Therefore, the solution is to have the indi-

vidual subscriber keep statistics on its perceived response time and report in when queried.

  Various Motorola protocols such as MDC and RD-LAP possess the ability to support remote data col- lection and reporting. Both protocols employ a virtual register set that can be written to and read. Reads and writes may originate from the subscriber or futed end infrastructure. End user units will measure, via the use of internal timers, the time it takes for an acknowledge (ACK) to be returned as a result of an ACK required inbound transmission. This time is stored in internal m...