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公开(公告)号：JPH11234235A
公开(公告)日：1999-08-27
申请号：JP28715398
申请日：1998-10-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ANDERSON JON , DOSHI BHARAT TARACHAND , DRAVIDA SUBRAHMANYAM , HERNANDEZ-VALENCIA ENRIQUE , KRISHNASWAMY MURALI , MANCHESTER JAMES S
Abstract: PROBLEM TO BE SOLVED: To prevent a pattern of a user data from being metched with a transmission scrambling pattern by scrambling a data gram before the data gram is scrambled by a transmission system again. SOLUTION: A bit which forms a data gram being processed by a simplified data link(SDL) processor 100 is scrambled before the data gram supplies a set/reset scrambler 501 used for surely maintaining synchronous state. In this case, a frame assembler 300 receives a data bit forming the data gram to be obtained, scrambles the bit of data gram based on a specific code and then assembles the result with a scrambling result and path overhead information into a pay load. Moreover, a scrambler circuit scrambles the pay load and related transfer overhead information and outputs the result as a frame of the data.
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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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Patent Agency Ranking
公开(公告)号：DE69830951T2
公开(公告)日：2006-04-20
申请号：DE69830951
申请日：1998-05-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ANDERSON JON , MANCHESTER JAMES S , VISSERS MAARTEN PETRUS JOSEPH
Abstract: The delineation and quick invocation of protection switching is achieved by generating a protection indicator having an initial state at the point (e.g. in 115) that a transmission facility (e.g. 111) failure is detected and passing the indicator downstream. A switch that receives the indicator either increments or decrements the indicator in accordance with predetermined rules. However, a switch that receives the indicator when it reaches an active state immediately invokes protection switching if that switch is at the sink end (125,130,140) of an associated protection path.
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公开(公告)号：CA2233732C
公开(公告)日：2001-12-18
申请号：CA2233732
申请日：1998-03-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MANCHESTER JAMES S , VISSERS MAARTEN PETRUS JOSEPH , ANDERSON JON
Abstract: SYSTEM AND METHOD FOR ACHIEVING EFFICIENT COORDINATION OF PROTECTION SWITCHING The delineation and quick invocation of protection switching is achieved by generating a protection indicator having an initial state at the point that a transmission facility failure is detected and passing the indicator downstream. A switch that receives the indicator either increments or decrements the indicator in accordance with predetermined rules. However, a switch that receives the indicator when it reaches an active state immediately invokes protection switching if that switch is at the sink end of an associated protection path.
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公开(公告)号：AU8837998A
公开(公告)日：1999-04-29
申请号：AU8837998
申请日：1998-10-08
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ANDERSON JON , MANCHESTER JAMES S , KRISHNASWAMY MURALI , HERNANDEZ-VALENCIA ENRIQUE , DRAVIDA SUBRAHMANYAM , DOSHI BHARAT TARACHAND
IPC: H04L9/18 , H04J3/00 , H04J3/06 , H04J3/16 , H04L9/22 , H04L25/03 , H04L29/06 , H04Q11/04 , H04L7/00 , H04B10/00
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：CA2233732A1
公开(公告)日：1998-11-30
申请号：CA2233732
申请日：1998-03-31
Applicant: LUCENT TECHNOLOGIES INC
Inventor： MANCHESTER JAMES S , VISSERS MAARTEN PETRUS JOSEPH , ANDERSON JON
Abstract: SYSTEM AND METHOD FOR ACHIEVING EFFICIENT COORDINATION OF PROTECTION SWITCHING The delineation and quick invocation of protection switching is achieved by generating a protection indicator having an initial state at the point that a transmission facility failure is detected and passing the indicator downstream. A switch that receives the indicator either increments or decrements the indicator in accordance with predetermined rules. However, a switch that receives the indicator when it reaches an active state immediately invokes protection switching if that switch is at the sink end of an associated protection path.
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公开(公告)号：DE69830951D1
公开(公告)日：2005-09-01
申请号：DE69830951
申请日：1998-05-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ANDERSON JON , MANCHESTER JAMES S , VISSERS MAARTEN PETRUS JOSEPH
Abstract: The delineation and quick invocation of protection switching is achieved by generating a protection indicator having an initial state at the point (e.g. in 115) that a transmission facility (e.g. 111) failure is detected and passing the indicator downstream. A switch that receives the indicator either increments or decrements the indicator in accordance with predetermined rules. However, a switch that receives the indicator when it reaches an active state immediately invokes protection switching if that switch is at the sink end (125,130,140) of an associated protection path.
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