System and method for measuring end-to-end network delay and...

Details System and method for measuring end-to-end network delay and... System and method for measuring end-to-end network delay and...

2005-01-13

2009-06-02

Ngo, Ricky (Department: 2416)

Multiplex communications

Diagnostic testing

Determination of communication parameters

C370S324000, C370S335000, C370S395100

Reexamination Certificate

active

07542430

ABSTRACT:
A system and method for measuring user-perceived delay in an IP network, comprising detecting request and corresponding response messages at a monitoring point in the network, calculating an uplink delay based upon the time elapsed between the request and corresponding response messages, detecting response and corresponding transport acknowledgement messages at the monitoring point, wherein the response message is sent in response to the request message, calculating a downlink network delay based upon the time elapsed between the response and corresponding transport acknowledgement messages; and calculating a user-perceived delay by adding uplink delay and downlink network delay, wherein the user-perceived delay represents a time required for an IP message to travel from a user device to a network destination plus the time required for the service (server) to respond and return the response to the user device.

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patent: 2007/0133475 (2007-06-01), Peisa et al.
patent: WO 01/20918 (2001-03-01), None
patent: WO 0120918 (2001-03-01), None

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