WO2002099979A2 - System and method of multiplexing data from multiple ports - Google Patents
System and method of multiplexing data from multiple ports Download PDFInfo
- Publication number
- WO2002099979A2 WO2002099979A2 PCT/US2002/017517 US0217517W WO02099979A2 WO 2002099979 A2 WO2002099979 A2 WO 2002099979A2 US 0217517 W US0217517 W US 0217517W WO 02099979 A2 WO02099979 A2 WO 02099979A2
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- WO
- WIPO (PCT)
- Prior art keywords
- data
- set forth
- ports
- port identifier
- receiving
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- RGNPBRKPHBKNKX-UHFFFAOYSA-N hexaflumuron Chemical compound C1=C(Cl)C(OC(F)(F)C(F)F)=C(Cl)C=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F RGNPBRKPHBKNKX-UHFFFAOYSA-N 0.000 claims description 13
- 230000003287 optical effect Effects 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 6
- 102100040338 Ubiquitin-associated and SH3 domain-containing protein B Human genes 0.000 description 2
- 101710143616 Ubiquitin-associated and SH3 domain-containing protein B Proteins 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 101100172132 Mus musculus Eif3a gene Proteins 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1605—Fixed allocated frame structures
- H04J3/1611—Synchronous digital hierarchy [SDH] or SONET
- H04J3/1617—Synchronous digital hierarchy [SDH] or SONET carrying packets or ATM cells
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0046—User Network Interface
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0064—Admission Control
- H04J2203/0067—Resource management and allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
- H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
- H04J2203/0073—Services, e.g. multimedia, GOS, QOS
- H04J2203/0082—Interaction of SDH with non-ATM protocols
- H04J2203/0085—Support of Ethernet
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13097—Numbering, addressing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13099—Loop multiplexer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13174—Data transmission, file transfer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13216—Code signals, frame structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13367—Hierarchical multiplexing, add-drop multiplexing
Definitions
- This invention relates to telecommunications network and equipment, and more particularly, to a system and method of multiplexing data from multiple ports.
- the optical subscriber terminal is a customer premise equipment (CPE) that aggregates and transports both Ethernet and time-division multiplexed (TDM) customer traffic to and from a network routing device and the network beyond.
- Customer Ethernet traffic may include data at 10 Mb/s, 100 Mb/s or higher rates from customers' Ethernet local area networks, while TDM data may consist of data at DS3 (or STS-1) and Tl speeds.
- the customer traffic is aggregated into an optical uplink for transmission to the network routing device.
- data from the Ethernet ports are multiplexed at the physical layer into multiple respective SONET STS-1 synchronous payload envelopes (SPEs) as a serial data stream.
- SPEs SONET STS-1 synchronous payload envelopes
- the serial data stream is converted into a SONET optical signal for transmission to the network routing device.
- the network routing device demulitplexes the serial data stream to recover data from each individual Ethernet port for processing by higher layer network equipment such as routers.
- This conventional method is inefficient in bandwidth utilization, because the data from each port is mapped into its respective SPE.
- the conventional method also requires substantial processing in the higher layer network equipment such as routers.
- telecommunication equipment includes a switch for receiving data from a plurality of ports and inserting a unique port identifier in the data from each port to identify the source port of the data.
- the equipment also includes a multiplexer coupled to the switch and operable to multiplex the data from the plurality of ports into a single serial data stream.
- a method includes the steps of receiving data from a plurality of ports, adding a unique port identifier to the data from each port to identify the port from which the data came, and multiplexing the data from the plurality of ports into a single data stream for transmission.
- a method of multiplexing data from a plurality of ports for transmission includes the steps of receiving data from the plurality of ports, adding a unique port identifier to a predetermined header field of the data from each port to identify the port from which the data came, multiplexing the data from the plurality of ports into a single SONET synchronous payload envelope, and converting the multiplexed data into a SONET optical signal for transmission.
- FIGURE 1 is simplified block diagram of an embodiment of customer premise equipment operable to multiplex data from multiple ports into a single synchronous payload envelope according to the teachings of the present invention
- FIGURE 2 is a more detailed block diagram of an embodiment of customer premise equipment operable to multiplex data from multiple Ethernet ports into a single synchronous payload envelope according to the teachings of the present invention
- FIGURE 3 is a diagram showing an embodiment of a tagged media access control (MAC) frame with the VLAN tag field used according to the teachings of the present invention.
- MAC media access control
- FIGURE 1 is simplified block diagram of an embodiment of customer premise equipment 10 operable to multiplex data from multiple ports into a single synchronous payload envelope (SPE) according to the teachings of the present invention.
- Equipment 10 receives data from a plurality of ports 14 carrying data, such as Ethernet ports. Ethernet ports 14 may carry data at 10 Mb/s, 100 Mb/s, or higher rates.
- Equipment 10 includes a multiplexer device 12, which receives the data from the multiple Ethernet ports 14 and inserts a unique port identifier or tag identifying the source port the data originated.
- the tag is inserted into a predetermined data field in the header of the data.
- a source port identifier tag may be inserted into a predetermined field in the Ethernet frame tag header.
- Multiplexer device 12 multiplexes the data from the multiple Ethernet ports into a single SPE transmitted as a serial data stream 16 to a telecommunication network (not shown).
- serial data stream 16 may have SONET formatting in which data traffic from all the ports are multiplexed into a single SONET SPE instead of the data from each port being mapped into its own respective SPE. Bandwidth efficiencies are thus achieved.
- FIGURE 2 is a more detailed block diagram of an embodiment of customer premise equipment 22 operable to multiplex data from multiple Ethernet ports 14 into a single synchronous payload envelope according to the teachings of the present invention.
- Equipment 22 includes an Ethernet interface circuit 26 which receives data from multiple Ethernet ports.
- Ethernet interface circuit 26 includes transceivers, transformers and protection circuits as known in the art.
- a switch 28 receives the data from the plurality of ports and performs the primary functions of performing media access control, tagging all Ethernet frames with unique tags, and passing the tagged frames to a multiplexer/demultiplexer 30.
- Multiplexer/demultiplexer 30 then multiplexes the traffic into a single SONET STS21C SPE 16 for conversion to optical signals and transmission to a network routing device.
- a diagram showing an embodiment of a tagged media access control (MAC) frame 40 with a virtual local area network (VLAN) tag field 46 to be used according to the teachings of the present invention is shown.
- the tagged MAC frame format is described in detail in ANSI/IEEE Standard 802.3, 2000 Edition, Local and Metropolitan Area Networks-Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications.
- Tagged MAC frame 40 includes a number of fields, including a tag control information (TCI) field 41.
- TCI tag control information
- Tag control information field 41 includes a 3 -bit user priority field 42, a 1-bit canonical format indicator (CFl) field 44, and a 12-bit VLAN identifier (VID) field 46.
- VID VLAN identifier
- the VID field is used to identify the virtual LAN that the frame belongs to.
- a virtual LAN is a logical identification of a logical segment of a LAN representing a broadcast domain. Virtual LANs are identified to reduce the traffic on the LAN because broadcast and multicast messages may be sent to users on the virtual LAN rather than the entire LAN. The VID is therefore traditionally used to identify the VLAN to which the sender and receiver of the data belong.
- the present invention provides a different use of the VID field by inserting a unique tag or identifier to identify the source Ethernet port of the data.
- An optical subscriber access multiplexer 24 receiving the optical uplink traffic from customer premises equipment 22 includes a multiplexer/demultiplexer 34 that demultiplexes the serial data stream to recover each individual Ethernet port data based on the source port identifier or tag in VID field 46, and provides the data to a routing device 36.
- Routing device 36 routes the traffic based on the source port identifier, MAC address and IP address to its output 38. Because the identification of an Ethernet port in effect identifies a service subscriber, it is also possible to transmit and process the data traffic according to the subscriber service level agreement (SLA) and quality of service (QoS).
- SLA subscriber service level agreement
- QoS quality of service
- routing device 36 receives data and adds the unique source port tag based on the source IP address of the sending device of the data.
- Multiplexer/demultiplexer 34 then multiplexes the data into an STS21C SPE for transmission to equipment 22.
- Multiplexer/demultiplexer 30 of equipment 22 demultiplexes the SPE to produce an output to switch 28. Based on the source port tag, switch 28 switches the data to the proper destination Ethernet port 14.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002310281A AU2002310281A1 (en) | 2001-06-01 | 2002-05-31 | System and method of multiplexing data from multiple ports |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29514701P | 2001-06-01 | 2001-06-01 | |
US60/295,147 | 2001-06-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2002099979A2 true WO2002099979A2 (en) | 2002-12-12 |
WO2002099979A3 WO2002099979A3 (en) | 2003-02-20 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/017517 WO2002099979A2 (en) | 2001-06-01 | 2002-05-31 | System and method of multiplexing data from multiple ports |
Country Status (3)
Country | Link |
---|---|
US (1) | US7912074B2 (en) |
AU (1) | AU2002310281A1 (en) |
WO (1) | WO2002099979A2 (en) |
Cited By (3)
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FR2851705A1 (en) * | 2003-01-07 | 2004-08-27 | Huawei Technologies Ce Ltd | METHOD FOR TRANSMITTING DATA BASED ON THE SONET / SDH HIERARCHY |
WO2006114032A1 (en) * | 2005-04-26 | 2006-11-02 | Hangzhou H3C Technologies Co., Ltd. | An appratus for multiplexing, demultiplxing and series multiplexing in the physical layer of the ethernet and the method thereof |
EP1966956A2 (en) * | 2005-12-21 | 2008-09-10 | Level 3 Communications, Inc. | Method and system for terminating sonet/sdh circuits in an ip network |
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CN100440825C (en) * | 2003-01-28 | 2008-12-03 | 华为技术有限公司 | System and method for switchingin and transmission of different data frames in digital transmission network |
CN100440824C (en) * | 2003-01-28 | 2008-12-03 | 华为技术有限公司 | System and method for switchingin and transmission of different data frames in digital transmission network |
CN100484054C (en) * | 2003-01-28 | 2009-04-29 | 华为技术有限公司 | System and method for switchingin and transmission of different data frames in digital transmission network |
US8391354B2 (en) * | 2007-05-14 | 2013-03-05 | Broadcom Corporation | Method and system for transforming uncompressed video traffic to network-aware ethernet traffic with A/V bridging capabilities and A/V bridging extensions |
US20090248918A1 (en) * | 2008-03-27 | 2009-10-01 | Wael William Diab | Method and system for a usb ethertype to tunnel usb over ethernet |
CN101437035A (en) * | 2008-12-18 | 2009-05-20 | 杭州华三通信技术有限公司 | Data communication method and Ethernet equipment |
FR2969336B1 (en) * | 2010-12-17 | 2013-01-04 | Sagem Defense Securite | MULTIPLE ETHERNET CONNECTION DEVICE WITH COMPUTER UNIT AND COMPUTER UNIT ASSEMBLY AND RELATED EQUIPMENT TOGETHER |
US9602433B2 (en) | 2012-07-26 | 2017-03-21 | Qualcomm Incorporated | Systems and methods for sharing a serial communication port between a plurality of communication channels |
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2001
- 2001-08-03 US US09/922,412 patent/US7912074B2/en not_active Expired - Lifetime
-
2002
- 2002-05-31 WO PCT/US2002/017517 patent/WO2002099979A2/en not_active Application Discontinuation
- 2002-05-31 AU AU2002310281A patent/AU2002310281A1/en not_active Abandoned
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Also Published As
Publication number | Publication date |
---|---|
US7912074B2 (en) | 2011-03-22 |
AU2002310281A1 (en) | 2002-12-16 |
WO2002099979A3 (en) | 2003-02-20 |
US20020181486A1 (en) | 2002-12-05 |
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