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WO2004086687A1 - Method for transmitting hdlc frame setting information in a frame relay line card of an atm exchange - Google Patents

Method for transmitting hdlc frame setting information in a frame relay line card of an atm exchange Download PDF

Info

Publication number
WO2004086687A1
WO2004086687A1 PCT/KR2004/000653 KR2004000653W WO2004086687A1 WO 2004086687 A1 WO2004086687 A1 WO 2004086687A1 KR 2004000653 W KR2004000653 W KR 2004000653W WO 2004086687 A1 WO2004086687 A1 WO 2004086687A1
Authority
WO
WIPO (PCT)
Prior art keywords
setting information
hdlc frame
line card
user information
information
Prior art date
Application number
PCT/KR2004/000653
Other languages
French (fr)
Inventor
Seung Kun Lee
Original Assignee
Utstarcom Korea Limited.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Utstarcom Korea Limited. filed Critical Utstarcom Korea Limited.
Publication of WO2004086687A1 publication Critical patent/WO2004086687A1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/10—Packet switching elements characterised by the switching fabric construction
    • H04L49/104—Asynchronous transfer mode [ATM] switching fabrics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H04L12/5601—Transfer mode dependent, e.g. ATM
    • H04L2012/5638—Services, e.g. multimedia, GOS, QOS
    • H04L2012/5665—Interaction of ATM with other protocols
    • H04L2012/567—Frame Relay over ATM
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/32—Specific management aspects for broadband networks

Definitions

  • the present invention relates to a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device, and more particularly, to a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device which enables more effective HDLC frame setting management.
  • the method of the present invention is based on a scheme of inserting HDLC frame setting information into user information for transmission and setting a path on a trunk for user information.
  • the trunk path setting can be accomplished by using the function of extracting HDLC frame setting information from user information and the time division multiplexing function.
  • a network controller in a central station can allocate any time slot in a tniiik for user information and transmit HDLC frame setting information originating from an ATM device frame relay line card, without having to use a separate communication route.
  • a frame relay line card manager in a conventional ATM device is designed to assign one of the available trunks for user information as a trunk for management information or set a communication route for management information to receive HDLC frame setting information from a central station network or a main controller.
  • the conventional frame relay line card manager will be briefly explained below by reference to Fig. 1.
  • Fig. 1 is a block diagram showing a typical setting of an HDLC frame according to the conventional technology.
  • HDLC frame setting information for an HDLC frame and time slot is received and set through the external HDLC frame setting information route SI, or one of existing eight trunks 40 for user information (HDLC frame setting information route S2) is allocated and used.
  • a communication port between networks for use by an operator must be further installed and effective management of trunks is also difficult because seven trunks of the existing eight trunks can be used for user information but one trunk cannot be used.
  • central networks are different from one trunk to next, it is more difficult to gather the setting information from the different networks 20, 30 and transmit with one trunk.
  • the method of the present invention is based on a scheme of inserting HDLC frame setting information into user information for transmission, in other words, setting a path on a trunk for user information.
  • the trunk path setting can be accomplished by using the function of extracting HDLC frame setting information from user information and the time division multiplexing function.
  • a network controller in a central station can allocate any time slot in a trunk for user information and transmit HDLC frame setting information originating from an ATM device frame relay line card, without having to use a separate communication route.
  • the present invention of a preferable embodiment is disclosed in a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device, which comprises HDLC frame processor, DS1E frame processor and line card manager, eight trunks for user information inputted into the DS IE frame processor are used for user information and setting information is loaded into No. 0 time slot or arbitrarily allocated available time slot of each trunk for transmission, the inputted eight trunks go through the DS1E frame processor and are separated into user information and connection setting information at HDLC frame setting information extractor, then user information is transmitted to the HDLC frame processor and HDLC frame setting information is transmitted to line card manager with time-division multiplexed.
  • the present invention is characterized that the line card manager is constructed such that it instructs setting of HDLC frame processor according to the inputted HDLC frame setting information, and sets HDLC frame setting information by allocating any time slot in trunks for user information.
  • FIG. 1 is a block diagram showing one embodiment of HDLC frame setting according to conventional technology
  • Fig. 2 is a block diagram showing one embodiment of HDLC frame setting information path in a trunk according to the present invention
  • Fig. 3 shows the function of HDLC frame setting information extractor according to the present invention
  • Fig. 4 shows the time-division multiplexed form of HDLC frame setting information according to the present invention.
  • Fig. 2 is a block diagram showing one embodiment of HDLC frame setting information path in a trunk according to the present invention.
  • DS1E frame processor 12 eight trunks for user information, which are inputted into DS1E frame processor 12, are used for user information as originally intended, and No. 0 time slot or available time slot of each trunk is arbitrarily allocated and used to load setting information.
  • the inputted eight frunks go through the DS1E frame processor 12 and are separated into user information and connection setting information at HDLC frame setting information extractor 50, then user information is transmitted to HDLC frame processor 11 and HDLC frame setting information is time-division multiplexed and transmitted to line card manager 13.
  • Fig. 3 shows the function of HDLC frame setting information extractor according to the present invention
  • Fig. 4 shows the time-division multiplexed form of HDLC frame setting information according to the present invention.
  • line card manager 13 is constructed such that it instructs the setting of HDLC frame processor 11 according to the inputted HDLC frame setting information.
  • the present invention makes more effective management possible and makes modification of setting during operating easy by allocating arbitrary time slot in trunks for user information without allocating separate trunks or making separate communication path as conventionally in order to set HDLC frame setting information.
  • the present invention enables more effective HDLC frame setting management by using a method for inserting HDLC frame setting information into user information for transmission, in other words for setting a path on a trunk for user information.
  • the trunk path setting can be accomplished by using the function of extracting HDLC frame setting information from user information and the time division multiplexing function.
  • a network controller in a central station can allocate any time slot in a trunk for user information and transmit HDLC frame setting information originating from an ATM device frame relay line card, without having to use a separate communication route.
  • the present invention manages trunks effectively and makes HDLC frame setting management easy by inserting HDLC frame management information in an existing ATM device frame relay line card into user information without allocating dedicated trunks, and can be applied in circuit emulation line card by inserting management information path into user information.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The present invention relates to a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device, and more particularly, to a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device which enables more effective HDLC frame setting management. The method of the present invention is based on a scheme of inserting HDLC frame setting information into user information for transmission and setting a path on a trunk for user information. The trunk path setting can be accomplished by using the function of extracting HDLC frame setting information from user information and the time division multiplexing function. With the trunk path setting, a network controller in a central station can allocate any time slot in a trunk for user information and transmit HDLC frame setting information originating from an ATM device frame relay line card, without having to use a separate communication route.

Description

METHOD FOR TRANSMITTING HDLC FRAME SETTING
INFORMATION IN A FRAME RELAY LINE CARD OF
AN ATM EXCHANGE
TECHNICAL FIELD
The present invention relates to a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device, and more particularly, to a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device which enables more effective HDLC frame setting management. The method of the present invention is based on a scheme of inserting HDLC frame setting information into user information for transmission and setting a path on a trunk for user information. The trunk path setting can be accomplished by using the function of extracting HDLC frame setting information from user information and the time division multiplexing function. With the trunk path setting, a network controller in a central station can allocate any time slot in a tniiik for user information and transmit HDLC frame setting information originating from an ATM device frame relay line card, without having to use a separate communication route.
BACKGROUND ART
Generally, a frame relay line card manager in a conventional ATM device is designed to assign one of the available trunks for user information as a trunk for management information or set a communication route for management information to receive HDLC frame setting information from a central station network or a main controller. The conventional frame relay line card manager will be briefly explained below by reference to Fig. 1.
Fig. 1 is a block diagram showing a typical setting of an HDLC frame according to the conventional technology. As shown in Fig. 1, in ATM device frame relay line card 10, HDLC frame setting information for an HDLC frame and time slot is received and set through the external HDLC frame setting information route SI, or one of existing eight trunks 40 for user information (HDLC frame setting information route S2) is allocated and used. In this case, a communication port between networks for use by an operator must be further installed and effective management of trunks is also difficult because seven trunks of the existing eight trunks can be used for user information but one trunk cannot be used. Also, in case that central networks are different from one trunk to next, it is more difficult to gather the setting information from the different networks 20, 30 and transmit with one trunk.
In other words, conventional technology as above is inefficient since any tirjjik of available trunks for user information must be used or a separate communication route must be made for HDLC frame setting information. Also, in case that central networks are different from one trunk to next, there is a problem that it is not easy to gather setting information requested by each of central networks.
DISCLOSURE OF THE INVENTION
Therefore, it is an object of the present invention to provide a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device which enables more effective HDLC frame setting management. The method of the present invention is based on a scheme of inserting HDLC frame setting information into user information for transmission, in other words, setting a path on a trunk for user information. The trunk path setting can be accomplished by using the function of extracting HDLC frame setting information from user information and the time division multiplexing function. With the tnrnk path setting, a network controller in a central station can allocate any time slot in a trunk for user information and transmit HDLC frame setting information originating from an ATM device frame relay line card, without having to use a separate communication route.
In order to attain the above object, the present invention of a preferable embodiment is disclosed in a method for transmitting HDLC frame setting information in a frame relay line card of an ATM device, which comprises HDLC frame processor, DS1E frame processor and line card manager, eight trunks for user information inputted into the DS IE frame processor are used for user information and setting information is loaded into No. 0 time slot or arbitrarily allocated available time slot of each trunk for transmission, the inputted eight trunks go through the DS1E frame processor and are separated into user information and connection setting information at HDLC frame setting information extractor, then user information is transmitted to the HDLC frame processor and HDLC frame setting information is transmitted to line card manager with time-division multiplexed.
Also, in order to attain the above object, the present invention is characterized that the line card manager is constructed such that it instructs setting of HDLC frame processor according to the inputted HDLC frame setting information, and sets HDLC frame setting information by allocating any time slot in trunks for user information. The foregoing and other objects and features of the present invention will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGS
Understanding that these drawings depict only typical embodiments of the invention and are, therefore, not to be considered limiting of its scope, the invention will be described with additional specificity and detail through use of the accompanying drawings in which: Fig. 1 is a block diagram showing one embodiment of HDLC frame setting according to conventional technology;
Fig. 2 is a block diagram showing one embodiment of HDLC frame setting information path in a trunk according to the present invention;
Fig. 3 shows the function of HDLC frame setting information extractor according to the present invention;
Fig. 4 shows the time-division multiplexed form of HDLC frame setting information according to the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION It will be readily understood that the components and steps of the present invention, as generally described and illustrated in the Figures herein and accompanying text, could be arranged and designed in a wide variety of different configurations while still utilizing the inventive concept. Thus, the following more detailed description of the preferred embodiments of the system and method of the present invention, as represented in Figs. 1 through 4 and accompanying text, is not intended to limit the scope of the invention, as claimed, but it is merely representative of the presently preferred embodiments of the invention. The presently preferred embodiments of the invention will be best understood by reference to the drawings, wherein like parts or steps are designated by like numerals throughout.
Fig. 2 is a block diagram showing one embodiment of HDLC frame setting information path in a trunk according to the present invention.
As shown in Fig. 2, eight trunks for user information, which are inputted into DS1E frame processor 12, are used for user information as originally intended, and No. 0 time slot or available time slot of each trunk is arbitrarily allocated and used to load setting information. The inputted eight frunks go through the DS1E frame processor 12 and are separated into user information and connection setting information at HDLC frame setting information extractor 50, then user information is transmitted to HDLC frame processor 11 and HDLC frame setting information is time-division multiplexed and transmitted to line card manager 13.
Fig. 3 shows the function of HDLC frame setting information extractor according to the present invention, and Fig. 4 shows the time-division multiplexed form of HDLC frame setting information according to the present invention.
As shown in Figs. 3 and 4, line card manager 13 is constructed such that it instructs the setting of HDLC frame processor 11 according to the inputted HDLC frame setting information.
As a result, the present invention makes more effective management possible and makes modification of setting during operating easy by allocating arbitrary time slot in trunks for user information without allocating separate trunks or making separate communication path as conventionally in order to set HDLC frame setting information.
Although the invention has been shown and described with respect to the concrete embodiments for method for transmitting HDLC frame setting information in ATM device frame relay line card in the specification of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. The scope of the invention is, therefore, indicated by the appended claims, rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
INDUSTRIAL APPLICABILITY
The present invention enables more effective HDLC frame setting management by using a method for inserting HDLC frame setting information into user information for transmission, in other words for setting a path on a trunk for user information. The trunk path setting can be accomplished by using the function of extracting HDLC frame setting information from user information and the time division multiplexing function. With the trunk path setting, a network controller in a central station can allocate any time slot in a trunk for user information and transmit HDLC frame setting information originating from an ATM device frame relay line card, without having to use a separate communication route. Also, the present invention manages trunks effectively and makes HDLC frame setting management easy by inserting HDLC frame management information in an existing ATM device frame relay line card into user information without allocating dedicated trunks, and can be applied in circuit emulation line card by inserting management information path into user information.

Claims

1. A method for transmitting HDLC frame setting information in a frame relay line card of an ATM device, which comprises a HDLC frame processor, a DS1E frame processor and a line card manager, comprising the steps of: using eight trunks for user information inputted into said DS1E frame processor for user information, and loading setting information into No. 0 time slot or arbitrarily allocated available time slot of each trunk and transmitting the setting information; and passing said inputted eight trunks through said DS IE frame processor and separating said inputted eight trunks into user information and connection setting information at HDLC frame setting information extractor, then transmitting the user information to said HDLC frame processor and time-division multiplexing said HDLC frame setting information and transmitting said time-division multiplexed HDLC frame setting information to line card manager.
2. The method of Claim 1, wherein said line card manager is constructed such that it instructs the setting of HDLC frame processor according to the inputted HDLC frame setting information, and sets HDLC frame setting information by allocating any time slot in trunks for user information.
PCT/KR2004/000653 2003-03-25 2004-03-24 Method for transmitting hdlc frame setting information in a frame relay line card of an atm exchange WO2004086687A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0018552 2003-03-25
KR1020030018552A KR20040083867A (en) 2003-03-25 2003-03-25 Method for transmisson of HDLC frame setting information in frame relay line card of ATM switch

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WO2004086687A1 true WO2004086687A1 (en) 2004-10-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495516A (en) * 1994-06-09 1996-02-27 General Datacomm, Inc. Diagnostic channel wakeup sequence for network managed fractional T1 or E1 digital service units
EP0940936A1 (en) * 1998-03-06 1999-09-08 Lucent Technologies Network Systems UK Limited Time division multiple access communication system
EP0984575A2 (en) * 1998-08-31 2000-03-08 Lucent Technologies Inc. Forward error correction for high speed optical transmission systems
US6181677B1 (en) * 1998-02-18 2001-01-30 Milgo Solutions, Inc. Method and apparatus for detection and protection against data loss in a fractional T1/E1 communications environment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495516A (en) * 1994-06-09 1996-02-27 General Datacomm, Inc. Diagnostic channel wakeup sequence for network managed fractional T1 or E1 digital service units
US6181677B1 (en) * 1998-02-18 2001-01-30 Milgo Solutions, Inc. Method and apparatus for detection and protection against data loss in a fractional T1/E1 communications environment
EP0940936A1 (en) * 1998-03-06 1999-09-08 Lucent Technologies Network Systems UK Limited Time division multiple access communication system
EP0984575A2 (en) * 1998-08-31 2000-03-08 Lucent Technologies Inc. Forward error correction for high speed optical transmission systems

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