IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
UP-0136835
(2005-05-24)
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| 등록번호 |
US-7620051
(2009-11-27)
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발명자
/ 주소 |
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| 출원인 / 주소 |
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
0 인용 특허 :
48 |
초록
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The present invention pertains to a method and device for automatically configuring the Permanent Virtual Circuit (PVC) of a Digital Subscriber Line (DSL) Customer Premises Equipment (CPE) and link it to a software interface. In one embodiment, the CPE configures its new PVC by obtaining a VPI and V
The present invention pertains to a method and device for automatically configuring the Permanent Virtual Circuit (PVC) of a Digital Subscriber Line (DSL) Customer Premises Equipment (CPE) and link it to a software interface. In one embodiment, the CPE configures its new PVC by obtaining a VPI and VCI from a first traffic bearing cell and linking its new PVC to a protocol specific to DSL. In another embodiment, the method comprises receiving an ATM cell and checking the ATM cell for an OAM Fault Management (F5) type cell. The OAM type cell allows the PVC to be configured by obtaining a VPI and VCI from the OAM type cell.
대표청구항
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What is claimed is: 1. A method for a customer premises equipment (CPE) device to auto-configure itself, the CPE device being coupled to an Asynchronous Transfer Mode (ATM) network, the ATM network having a preexisting Permanent Virtual Circuit (PVC) to which the CPE device is to be self auto-confi
What is claimed is: 1. A method for a customer premises equipment (CPE) device to auto-configure itself, the CPE device being coupled to an Asynchronous Transfer Mode (ATM) network, the ATM network having a preexisting Permanent Virtual Circuit (PVC) to which the CPE device is to be self auto-configured, the method comprising: receiving a plurality of ATM cells from a digital subscriber line access multiplexer; checking the plurality of received ATM cells to identity a first ATM cell of a particular type of a packet, the first ATM cell including a header and a payload, the header including a Virtual Path Identifier (VPI) and a Virtual Circuit Identifier (VCI), wherein identifying the first ATM cell includes: measuring an elapsed time between a previous ATM cell and a current ATM cell received by the CPE device, detecting the current ATM cell as the first ATM cell if the elapsed time has a first value relative to a threshold value and extracting the VPI and the VCI from the first ATM cell, and discarding through a buffer the current ATM cell if the elapsed time has a second value relative to the threshold value; configuring directly the PVC of the CPE device by having the CPE device by itself obtain the VPI and the VCI extracted from the first ATM cell, wherein configuring does not involve Switched Virtual Circuit translation; and linking the PVC to a protocol, the protocol being applicable to a Digital Subscriber Line. 2. The method of claim 1, wherein the threshold of the elapsed time between the previous ATM cell and the current ATM cell is at least 800 milliseconds. 3. The method of in claim 1, wherein the protocol further includes a Point-to-Point Protocol interface or a Request-For-Comments 1483 bridge interface. 4. The method of claim 1, further comprising receiving a plurality of messages from an aggregate router, the plurality of messages being a plurality of Link Control Protocol configuration requests or a plurality of Bridge Protocol Data Unit spanning tree messages. 5. The method of claim 1, wherein the linking further includes configuring a Dynamic Host Configuration Protocol or an IPCP configuration once the configured PVC is linked to a PPP module or a bridging module. 6. The method of claim 1, comprising, prior to discarding the current ATM cell through the buffer, examining the header of the current ATM cell and detecting the current ATM cell as being the first ATM cell when the current ATM cell contains a Link Control Protocol (LCP) header. 7. The method of claim 1, comprising, prior to discarding the current ATM cell through the buffer, examining the header of the current ATM cell and detecting the current ATM cell as being the first ATM cell when the current ATM cell contains a Bridge Protocol Data Unit (BPDU) header. 8. A customer premises equipment device coupled to an Asynchronous Transfer Mode (ATM) network, the device being capable of auto-configuring itself over the ATM network, the ATM network having a preexisting Permanent Virtual Circuit (PVC) to which the device is to be auto-configured, the device comprising: means for receiving a plurality of ATM cells from a digital subscriber line access multiplexer; means for checking the plurality of received ATM cells to identify a first ATM cell of a particular type of a packet, the first ATM cell including a header and a payload, the header including a Virtual Path Identifier (VPI) and a Virtual Circuit Identifier (VCI), wherein identifying the first ATM cell includes: measuring an elapsed time between a previous ATM cell and a current ATM cell received by the CPE device, detecting the current ATM cell as the first ATM cell if the elapsed time has a first value relative to a threshold value and extracting the VPI and the VCI from the first ATM cell, and discarding through a buffer the current ATM cell if the elapsed time has a second value relative to the threshold value; means for configuring directly the PVC of the CPE device by having the CPE device by itself obtain the VPI and the VCI extracted from the first ATM cell, wherein configuring does not involve Switched Virtual Circuit translation; and means for linking the PVC to a protocol, the protocol being applicable to a Digital Subscriber Line. 9. The device of claim 8, wherein the threshold of the elapsed time between the previous ATM cell and the current ATM cell is at least 800 milliseconds. 10. The Customer Premises Equipment device of claim 8, wherein identifying the first ATM cell includes prior to discarding the current ATM cell through the buffer, examining the header of the current ATM cell and detecting the current ATM cell as being the first ATM cell when the current ATM cell contains one of a Link Control Protocol (LCP) header and a Bridge Protocol Data Unit (BPDU) header. 11. A program storage device readable by a computer, embodying a program of instructions, executable by the computer to perform a method for a customer premises equipment (CPE) device to auto-configure itself, the CPE device being coupled to an Asynchronous Transfer Mode (ATM) network, the ATM network having a preexisting Permanent Virtual Circuit (PVC) to which the CPE device is to be self auto-configured, the method comprising: receiving a plurality of ATM cells from a digital subscriber line access multiplexer; checking the plurality of received ATM cells to identify a first ATM cell of a particular type of a packet, the first ATM cell including a header and a payload, the header including a Virtual Path Identifier (VPI) and a Virtual Circuit Identifier (VCI), wherein identifying the first ATM cell includes: measuring an elapsed time between a previous ATM cell and a current ATM cell received by the CPE device, detecting the current ATM cell as the first ATM cell if the elapsed time has a first value relative to a threshold value and extracting the VPI and the VCI from the first ATM cell, and discarding through a buffer the current ATM cell if the elapsed time has a second value relative to the threshold value; configuring directly the PVC of the CPE device by having the CPE device by itself obtain the VPI and the VCI extracted from the first ATM cell, wherein configuring does not involve Switched Virtual Circuit translation; and linking the PVC to a protocol, the protocol being applicable to a Digital Subscriber Line. 12. The program storage device of claim 11, wherein the threshold of the elapsed time between the previous ATM cell and the current ATM cell is at least 800 milliseconds. 13. The program storage device of claim 11, wherein the protocol further includes a Point-to-Point Protocol interface or a Request-For-Comments 1483 bridge interface. 14. The program storage device of claim 11, further comprising receiving a plurality of messages from an aggregate router, the plurality of messages being a plurality of Link Control Protocol configuration requests or a plurality of Bridge Protocol Data Unit spanning tree messages. 15. The program storage device of claim 11, wherein the linking further includes configuring a Dynamic Host Configuration Protocol or an IPCP configuration once the configured PVC is linked to a PPP module or a bridging module. 16. The program storage device of claim 11, wherein identifying the first ATM cell includes prior to discarding the current ATM cell through the buffer, examining the header of the current ATM cell and detecting the current ATM cell as being the first ATM cell when the current ATM cell contains one of a Link Control Protocol (LCP) header and a Bridge Protocol Data Unit (BPDU) header. 17. An Asynchronous Transfer Mode (ATM) communications system comprising: a digital subscriber line access module receiving a plurality of ATM cells; and a customer premises equipment device having a mechanism which directly auto-configures to a preexisting Permanent Virtual Circuit (PVC), the mechanism receiving a plurality of ATM cells, the mechanism checking the plurality of received ATM cells to identify a first ATM cell of a particular type of a packet, the first ATM cell including a header and a payload, the header including a Virtual Path Identifier (VPI) and a Virtual Circuit Identifier (VCI), wherein identifying the first ATM cell includes: measuring an elapsed time between a previous ATM cell and a current ATM cell received by the CPE device, detecting the current ATM cell as the first ATM cell if the elapsed time has a first value relative to a threshold value and extracting the VPI and the VCI from the first ATM cell, and discarding through a buffer the current ATM cell if the elapsed time has a second value relative to the threshold value, the mechanism configuring directly the PVC by obtaining by itself the VPI and the VCI extracted from the first ATM cell, wherein configuring does not involve Switched Virtual Circuit translation, and the mechanism linking the PVC to a protocol, the protocol being applicable to a Digital Subscriber Line. 18. The system of claim 17, wherein the threshold of the elapsed time between the previous ATM cell and the current ATM cell is at least 800 milliseconds. 19. The system of claim 17, wherein the customer premises equipment device further receives a plurality of messages from an aggregate router, the plurality of messages being a plurality of Link Control Protocol configuration requests or a plurality of Bridge Protocol Data Unit spanning tree messages. 20. The system of claim 17, wherein identifying the first ATM cell includes prior to discarding the current ATM cell through the buffer, examining the header of the current ATM cell and detecting the current ATM cell as being the first ATM cell when the current ATM cell contains one of a Link Control Protocol (LCP) header and a Bridge Protocol Data Unit (BPDU) header.
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