US5487072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Error monitoring algorithm for broadband signaling
Assignee: Nytell Software LLC
•
Filing: 1994-06-30
•
Granted: 1996-01-23
•
Expires: 2014-06-30
Abstract
Abstract The error performance of an ATM signaling link operating under the service specific connection oriented protocol (SSCOP) is monitored by determining the maximum retransmission count (i.e., the number of times a message has to be retransmitted from a transmitting to a receiving end) amongst those messages retransmitted within a polling interval. A quality of service (QOS) factor is the average maximum retransmission count at the end of N consecutive polling intervals. If the QOS factor is greater than a predetermined threshold, then the link is taken out of service.
Inventors
- 👤 Krishna Kant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:54
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; G; G08; G08C; G08C25/00; G08C25/02; H04L; H04L1/00; H04L1/0078; H04L1/0083; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5625; H04L2012/5629; H04L2012/563; H04L2012/5631; H04L2012/5636
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
189 words
A method of error monitoring a communications link on which messages are transmitted between a transmitter and a receiver, which transmitter retransmits only those messages either received in error or not received by the receiver, and which transmitter stores each message until it is correctly received by the receiver together with a retransmission count of the number of times each message is retransmitted, said method comprising the steps of: 1) in a fixed interval, determining the maximum retransmission count for each message stored in the transmitter; 2) for a block comprising a plurality (N) of successive fixed intervals, computing the average of the maximum retransmission counts for those messages stored in the transmitter during those successive fixed intervals to determine a quality of service factor, said quality of service factor being determined after every current fixed interval based on the average Of the maximum retransmission coupes of a block that ends with the current fixed interval; 3) comparing said quality of service factor with a predetermined threshold; and 4) removing the link from service if the quality of service factor of the block is greater than the predetermined threshold.
Claim 2
Independent Claim
189 words
A method of error monitoring a communications link on which messages are transmitted between a transmitter and a receiver, which transmitter retransmits only those messages either received in error or not received by the receiver, and which transmitter stores each message until it is correctly received by the receiver together with a retransmission count of the number of times each message is retransmitted, said method comprising the steps of: 1) in a fixed interval, determining the maximum retransmission count for each message stored in the transmitter; 2) for a block comprising a plurality (N) of successive fixed intervals, computing the average of the maximum retransmission counts for those messages stored in the transmitter during those successive fixed intervals to determine a quality of service factor, said quality of service factor being determined after every current fixed interval based on the average Of the maximum retransmission coupes of a block that ends with the current fixed interval; 3) comparing said quality of service factor with a predetermined threshold; and 4) removing the link from service if the quality of service factor of the block is greater than the predetermined threshold.
Claim 3
Independent Claim
195 words
A method of error monitoring a digital communications link on which messages are transmitted between a transmitter and a receiver, which transmitter retransmits only those messages either received in error or not received by the receiver, and which transmitter stores each message until it is correctly received by the receiver together with a retransmission count of the number of times each message is transmitted, said method comprising the steps of: 1) in a fixed interval, determining the maximum retransmission count for each message stored in the transmitter and which was retransmitted in that fixed interval; 2) for a block comprising a plurality (N) of successive intervals, computing the average of the maximum retransmission counts for those messages stored in the transmitter during those successive fixed intervals to determine a quality of service factor, said quality of service factor being determined after every current fixed interval based on the average maximum transmission count of a block that ends with the current fixed interval; 3) comparing said quality of service factor with a predetermined threshold; and 4) removing the link from service if the quality of service factor of the block is greater than the predetermined threshold.
Claim 4
Independent Claim
195 words
A method of error monitoring a digital communications link on which messages are transmitted between a transmitter and a receiver, which transmitter retransmits only those messages either received in error or not received by the receiver, and which transmitter stores each message until it is correctly received by the receiver together with a retransmission count of the number of times each message is transmitted, said method comprising the steps of: 1) in a fixed interval, determining the maximum retransmission count for each message stored in the transmitter and which was retransmitted in that fixed interval; 2) for a block comprising a plurality (N) of successive intervals, computing the average of the maximum retransmission counts for those messages stored in the transmitter during those successive fixed intervals to determine a quality of service factor, said quality of service factor being determined after every current fixed interval based on the average maximum transmission count of a block that ends with the current fixed interval; 3) comparing said quality of service factor with a predetermined threshold; and 4) removing the link from service if the quality of service factor of the block is greater than the predetermined threshold.
Claim 5
Independent Claim
193 words
A method of error monitoring a communications link on which messages are transmitted between a transmitter and a receiver, which transmitter retransmits only those messages either received in error or not received by the receiver, and which transmitter stores each message until it is correctly received by the receiver together with a retransmission count of the number of times each message is transmitted, said method comprising the steps of: in a fixed interval, determining the maximum retransmission count for each message stored in the transmitter; for successive blocks each comprising a plurality (N) of successive fixed intervals, computing the average of the maximum retransmission counts for those messages stored in the transmitter during those successive fixed intervals to determine a quality of service factor, said quality of service factor being determined at the end of a current block as a weighted function of the quality of service factor of a previous block and the average maximum retransmission count for the current block; comparing the quality of service factor with a predetermined threshold; and removing the link from service if the quality of service factor of the block is greater than the predetermined threshold.
Claim 6
Independent Claim
193 words
A method of error monitoring a communications link on which messages are transmitted between a transmitter and a receiver, which transmitter retransmits only those messages either received in error or not received by the receiver, and which transmitter stores each message until it is correctly received by the receiver together with a retransmission count of the number of times each message is transmitted, said method comprising the steps of: in a fixed interval, determining the maximum retransmission count for each message stored in the transmitter; for successive blocks each comprising a plurality (N) of successive fixed intervals, computing the average of the maximum retransmission counts for those messages stored in the transmitter during those successive fixed intervals to determine a quality of service factor, said quality of service factor being determined at the end of a current block as a weighted function of the quality of service factor of a previous block and the average maximum retransmission count for the current block; comparing the quality of service factor with a predetermined threshold; and removing the link from service if the quality of service factor of the block is greater than the predetermined threshold.
Claim 7
Dependent Claim
13 words
The method of claim 3 wherein the link is on an ATM network.
Claim 8
Dependent Claim
11 words
The method of claim 4 wherein the messages are signaling messages.
Claim 9
Dependent Claim
19 words
The method of claim 5 wherein the signaling messages are transmitted under a service specific connection oriented protocol (SSCOP).
Claim 10
Dependent Claim
32 words
The method of claim 3 further comprising the step of removing the link from service if the number of messages stored at the transmitter for retransmission is greater than a predetermined number.
Claim 11
Dependent Claim
26 words
The method of claim 3 further comprising the step of removing the link from service whenever the retransmission count of any message exceeds a predetermined number.
Claim 12
Independent Claim
200 words
A method of error monitoring a digital communications link on which messages are transmitted between a transmitter and a receiver, which transmitter retransmits only those messages either received in error or not received by the receiver, and which transmitter stores each message until it is correctly received by the receiver together with a retransmission count of the number of times each message is transmitted, said method comprising the steps of: in a fixed interval, determining the maximum retransmission count for each message stored in the transmitter and which was retransmitted in that fixed interval; for successive blocks each comprising a plurality (N) of successive fixed intervals, computing the average of the maximum retransmission counts for those messages stored in the transmitter during the block to determine a quality of service factor, said quality of service factor being determined at the end of a current block as a weighted function of the quality of service factor of a previous block and the average maximum retransmission count for the current block; comparing the quality of service factor with a predetermined threshold; and removing the link from service if the quality of service factor of the block is greater than the predetermined threshold.
Claim 13
Independent Claim
200 words
A method of error monitoring a digital communications link on which messages are transmitted between a transmitter and a receiver, which transmitter retransmits only those messages either received in error or not received by the receiver, and which transmitter stores each message until it is correctly received by the receiver together with a retransmission count of the number of times each message is transmitted, said method comprising the steps of: in a fixed interval, determining the maximum retransmission count for each message stored in the transmitter and which was retransmitted in that fixed interval; for successive blocks each comprising a plurality (N) of successive fixed intervals, computing the average of the maximum retransmission counts for those messages stored in the transmitter during the block to determine a quality of service factor, said quality of service factor being determined at the end of a current block as a weighted function of the quality of service factor of a previous block and the average maximum retransmission count for the current block; comparing the quality of service factor with a predetermined threshold; and removing the link from service if the quality of service factor of the block is greater than the predetermined threshold.
Claim 14
Dependent Claim
13 words
The method of claim 9 wherein the link is on an ATM network.
Claim 15
Dependent Claim
11 words
The method of claim 10 wherein the messages are signaling messages.
Claim 16
Dependent Claim
19 words
The method of claim 11 wherein the signaling messages are transmitted under a service specific connection oriented protocol (SSCOP).
Claim 17
Dependent Claim
32 words
The method of claim 9 further comprising the step of removing the link from service if the number of messages stored at the transmitter for retransmission is greater than a predetermined number.
Claim 18
Dependent Claim
26 words
The method of claim 9 further comprising the step of removing the link from service whenever the retransmission count of any message exceeds a predetermined number.
References Cited (Backward Citations)
US4328581A
Cited
US4750171A
Cited
US4939731A
Cited
US5031179A
Cited
US5084877A
Cited
US5224095A
Cited
US5150368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-22 | 1999-07-24 | 2000-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-22 | 2003-07-24 | 2004-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-22 | 2007-07-24 | 2008-01-23 | $7700.00 | Window Closed / Lapsed |