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公开(公告)号：DE69916747D1
公开(公告)日：2004-06-03
申请号：DE69916747
申请日：1999-09-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOSHI BHARAT TARACHAND , HERNANDEZ-VALENCIA ENRIQUE , SRIRAM KOTIKALAPUDI , WANG YUNG-TERNG , YUE ON-CHING
Abstract: A quality of service guarantee for voice and other delay sensitive transmissions within an Internet Protocol (IP) network is provided by identifying the IP network path utilized for IP packet transmission between source and destination edge devices and virtually provisioning IP network path bandwidth for priority voice traffic. Priority for voice packets and admission control of new voice calls (and other delay sensitive traffic) based on the remaining available capacity over the IP network path guarantees that high priority voice (and other delay sensitive traffic) meet stringent delay requirements. A Virtual Provisioning Server is utilized to maintain bandwidth capacity data for each path segment within the IP network and to forward the bandwidth capacity data to a Signaling Gateway. The Signaling Gateway determines whether to accept or reject an additional delay sensitive traffic component based upon available bandwidth capacity for an IP network path. The Signaling Gateway then signals the originating source edge device as to its determination to accept or reject. Quality of Service guarantees concerning acceptable delay and jitter characteristics for real-time transmission over an IP network are therefore provided without the need to directly signal the individual IP routers over which an IP network path is established.
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Patent Agency Ranking
公开(公告)号：CA2248915A1
公开(公告)日：1999-04-11
申请号：CA2248915
申请日：1998-09-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KRISHNASWAMY MURALI , MANCHESTER JAMES S , HERNANDEZ-VALENCIA ENRIQUE , ANDERSON JON , DOSHI BHARAT TARACHAND , DRAVIDA SUBRAHMANYAM
IPC: H04L9/18 , H04J3/00 , H04J3/06 , H04J3/16 , H04L9/22 , H04L25/03 , H04L29/06 , H04Q11/04 , H04L29/02 , H04B10/20 , H04L12/24
Abstract: A simplified data link protocol which may be implemented in a very high-speed transmission system, e.g., SONET, processes a datagram received from an IP facility according to QoS considerations and scrambles a datagram before it is again scrambled by a transmission system, e.g., a SONET transmitter, to ensure that the pattern of a user's data does not match the transmission scrambling pattern. The data link protocol scrambler also employs a novel synchronization scheme. We also use a pointer system which identifies the location of a datagram in a frame to eliminate flags and the need to process user data to ensure that it does not contain and a boundary flag.
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公开(公告)号：DE69916747T2
公开(公告)日：2005-03-31
申请号：DE69916747
申请日：1999-09-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DOSHI BHARAT TARACHAND , HERNANDEZ-VALENCIA ENRIQUE , SRIRAM KOTIKALAPUDI , WANG YUNG-TERNG , YUE ON-CHING
Abstract: A quality of service guarantee for voice and other delay sensitive transmissions within an Internet Protocol (IP) network is provided by identifying the IP network path utilized for IP packet transmission between source and destination edge devices and virtually provisioning IP network path bandwidth for priority voice traffic. Priority for voice packets and admission control of new voice calls (and other delay sensitive traffic) based on the remaining available capacity over the IP network path guarantees that high priority voice (and other delay sensitive traffic) meet stringent delay requirements. A Virtual Provisioning Server is utilized to maintain bandwidth capacity data for each path segment within the IP network and to forward the bandwidth capacity data to a Signaling Gateway. The Signaling Gateway determines whether to accept or reject an additional delay sensitive traffic component based upon available bandwidth capacity for an IP network path. The Signaling Gateway then signals the originating source edge device as to its determination to accept or reject. Quality of Service guarantees concerning acceptable delay and jitter characteristics for real-time transmission over an IP network are therefore provided without the need to directly signal the individual IP routers over which an IP network path is established.
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公开(公告)号：CA2358166A1
公开(公告)日：2002-04-16
申请号：CA2358166
申请日：2001-10-03
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HERNANDEZ-VALENCIA ENRIQUE , JONES NEVIN R
Abstract: A fibre channel (FC) signal representing block encoded data is applied to a block decoder, which removes the block encoding from the data. The data is then applied to a simplified data link (SDL) protocol encoder, which maps the data into an SDL protocol packet for transmission over a SONET (Synchronous Optical Network)-based transport medium.
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公开(公告)号：CA2279030A1
公开(公告)日：2000-03-22
申请号：CA2279030
申请日：1999-07-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HERNANDEZ-VALENCIA ENRIQUE , YUE ON-CHING , DOSHI BHARAT TARACHAND , SRIRAM KOTIKALAPUDI , WANG YUNG-TERNG
Abstract: A quality of service guarantee for voice and other delay sensitive transmissions within an Internet Protocol (IP) network is provided by identifying the IP network path utilized for IP packet transmission between source and destination edge devises and virtually provisioning IP network path bandwidth for priority voice traffic. Priority for voice packets and admission control of new voice calls (and other delay sensitive traffic) based on the remaining available capacity over the IP network path guarantees that high priority voice (and other delay sensitive traffic) meet stringent delay requirements. A Virtual Provisioning Server is utilized to maintain bandwidth capacity data for each path segment within the IP network and to forward the bandwidth capacity data to a Signaling Gateway. The Signaling Gateway determines whether to accept or reject an additional delay sensitive traffic component based upon available bandwidth capacity for an IP network path. The Signaling Gateway then signals the originating source edge device as to its determination to accept or reject. Quality of Service guarantees concerning acceptable delay and fitter characteristics for real-time transmission over an IP network are therefore provided without the need to directly signal the individual IP routers over which an IP network path is established.
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公开(公告)号：CA2262774A1
公开(公告)日：1999-09-06
申请号：CA2262774
申请日：1999-02-24
Applicant: LUCENT TECHNOLOGIES INC
Inventor： DRAVIDA SUBRAHMANYAM , DOSHI BHARAT TARACHAND , MATRAGI WASSIM A , HERNANDEZ-VALENCIA ENRIQUE , QURESHI MUHAMMED AKBER
Abstract: A simple point-to-point data link protocol (SDL) is defined which is based on the use of a length indicator field and an error check field, rather than a flag, for performing packet boundary recovery in a receiver. In an embodiment of the invention, an SDL transmitter transmits SDL packets comprising a header and a variable length payload. The SDL header comprises a length indicator (LI) field, a type field and a cyclic redundancy check (CRC) field. For receiving these transmitted SDL packets, SDL supports the use of a self-synchronization/self-delineation technique in the receiver. The receiver performs self-delineation as a function of the LI field, and performs self synchronization, or packet recovery, as a function of both the LI field and the header CRC field. In particular, in performing packet recovery, the receiver performs a CRC check over each received SDL packet header and synchronization is declared after N correct checks, e.g., N = 4. The SDL receiver operates in a hunt made when performing synchronization, and a normal mode when synchronization has been accomplished.
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