Multiplex communications – Diagnostic testing – Determination of communication parameters
Patent
1995-05-05
1997-03-18
Safourek, Benedict V.
Multiplex communications
Diagnostic testing
Determination of communication parameters
370522, H04B 1700
Patent
active
056129491
ABSTRACT:
A method is disclosed for determining delays in a network (10) carrying messages, such as an SS7 signalling network or a TCP/IP network. The method involves monitoring the network (10) at a predetermined location to detect first messages (REQ) and second messages (ACK) of respective predetermined categories (X, Y), the first and second messages each producing a respective time-dependent loading of the network and the second messages being caused by the first messages whereby the loadings vary in a similar manner with time but with the loading produced by the second messages being offset from that produced by the first messages. Load measures (L.sub.X,L.sub.Y) are then derived for the first and second messages (REQ, ACK), each load measure being derived by counting the number of messages of the category concerned that are detected in a predetermined time interval. These load measures (L.sub.X,L.sub.Y) are thereafter used to determine the offset between the network loadings produced by the first and second messages, this offset providing a network-delay measurement.
REFERENCES:
patent: 5095444 (1992-03-01), Motles
patent: 5193151 (1993-03-01), Jain
patent: 5315580 (1994-05-01), Phaal
patent: 5450394 (1995-09-01), Gruber et al.
Software Practice & Experience, vo. 16, No. 7, Jul. 1986, Chichester GB pp. 671-687 S. Vassiliades et al. `A monitor tool on a network based on the Cambridge Ring`.
IEEE Network: The Magazine of Computer Communications, vol. 1, No. 3, Jul. 1987, New York US pp. 13-19.
EPO Search Report.
Hewlett--Packard Company
Ngo Ricky Q.
Safourek Benedict V.
LandOfFree
Method and apparatus for determining network delays does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for determining network delays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining network delays will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1711471