Provision of TDM service over GPON using VT encapsulation

• US 7,852,880 B2
• Filed: 12/13/2006
• Issued: 12/14/2010
• Est. Priority Date: 12/13/2005
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Brolin, Stephen J., Solomon, David
• Primary Examiner(s): Ngo; Ricky
• Assistant Examiner(s): Gidado; Rasheed
• Application Number:
  US11/637,808
• Publication Number:
  US 20070211763A1
• Time in Patent Office: 1,462 Days
• Field of Search: 370/442, 370/498, 370/466, 370/389, 370/432, 398/51
• US Class Current: 370/498
• CPC Class Codes: H04J 2203/0094 Virtual Concatenation
• CPC Class Codes: H04J 3/1694 Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers Passive Optical Networks H04Q11/0062
• CPC Class Codes: H04L 12/18 for broadcast or conference , e.g. multicast
• CPC Class Codes: H04L 41/0213 Standardised network management protocols, e.g. simple network management protocol [SNMP]
• CPC Class Codes: H04L 41/024 using relational databases for representation of network management data, e.g. managing via structured query language [SQL]
• CPC Class Codes: H04L 41/042 comprising distributed management centres cooperatively managing the network
• CPC Class Codes: H04L 41/0806 for initial configuration or provisioning, e.g. plug-and-play
• CPC Class Codes: H04L 41/0856 by backing up or archiving configuration information
• CPC Class Codes: H04L 41/5054 Automatic deployment of services triggered by the service manager, e.g. service implementation by automatic configuration of network components
• CPC Class Codes: H04L 41/509 wherein the managed service relates to media content delivery, e.g. audio, video or TV
• CPC Class Codes: H04L 43/50 Testing arrangements
• CPC Class Codes: H04L 45/16 Multipoint routing
• CPC Class Codes: H04L 49/15 Interconnection of switching modules
• CPC Class Codes: H04L 49/1523 Parallel switch fabric planes
• CPC Class Codes: H04L 49/30 Peripheral units, e.g. input or output ports
• CPC Class Codes: H04L 49/351 for local area network [LAN], e.g. Ethernet switches
• CPC Class Codes: H04L 49/352 Gigabit ethernet switching [GBPS]
• CPC Class Codes: H04L 49/357 Fibre channel switches
• CPC Class Codes: H04L 49/50 Overload detection or protection within a single switching element
• CPC Class Codes: H04Q 11/0062 Network aspects
• CPC Class Codes: H04Q 11/0067 : Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
• CPC Class Codes: H04Q 11/0071 : Provisions for the electrical-optical layer interface
• CPC Class Codes: H04Q 2011/0079 : Operation or maintenance aspects
• CPC Class Codes: H04Q 2011/0083 : Testing; Monitoring
• CPC Class Codes: H04Q 2011/0084 : Quality of service aspects
• CPC Class Codes: H05K 7/20009 : using a gaseous coolant in electronic enclosures in cabinets of standardized dimensions H05K7/20536; in server cabinets H05K7/20709; in vehicle electronic casings H05K7/20845; in power control electronics H05K7/2089; in displays H05K7/20954
• CPC Class Codes: H05K 7/202 : Air circulating in closed loop within enclosure wherein heat is removed through heat-exchangers
• CPC Class Codes: Y04S 40/00 : Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them

Abstract

The present invention provides TDM service, such as DS1, E1, or DS3, in a GPON system that is cost-effective, flexible, and that is easily configured and reconfigured. A system for telecommunications comprises circuitry operable to receive time division multiplexed data traffic, circuitry operable to form Virtual Tributary encapsulated data traffic including the time division multiplexed data traffic, circuitry operable to transmit the Virtual Tributary encapsulated data traffic, circuitry operable to receive the Virtual Tributary encapsulated data traffic, and circuitry operable to extract the time division multiplexed data traffic from the Virtual Tributary encapsulated data traffic.

Claims

1. A system for telecommunications comprising:

first circuitry operable to receive time division multiplexed data traffic, perform Virtual Tributary encapsulation on the time division multiplexed data traffic, and perform Ethernet encapsulation on the Virtual Tributary encapsulated time division multiplexed data traffic;

a first Ethernet switch to receive the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the first circuitry and transmit the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic to a first Passive Optical Network Media Access Control block;

the first Passive Optical Network Media Access Control block to receive the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the first Ethernet switch and transmit the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic over a Passive Optical Network;

the Passive Optical Network to transmit the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic;

a second Passive Optical Network Media Access Control block to receive the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the Passive Optical Network and transmit the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic to a second Ethernet switch;

the second Ethernet switch to receive the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the second Passive Optical Network Media Access Control block and transmit the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic to second circuitry;

the second circuitry operable to receive the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic, and extract the time division multiplexed data traffic from the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic.

2. The system of claim 1, wherein the time division multiplexed data traffic is DS1, E1, or DS3 data traffic.

3. The system of claim 1, wherein the Passive Optical Network comprises a Gigabit Passive Optical Network.

4. The system of claim 1, wherein the second circuitry further decapsulates the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic to Virtual Tributary encapsulated time division multiplexed data traffic.

5. The system of claim 4, wherein the second circuitry maps the Virtual Tributary encapsulated time division multiplexed data traffic to Synchronous Optical Network data traffic.

6. A method for telecommunications comprising:

receiving time division multiplexed data traffic, performing Virtual Tributary encapsulation on the time division multiplexed data traffic, and performing Ethernet encapsulation on the Virtual Tributary encapsulated time division multiplexed data traffic at a first circuitry;

receiving the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the first circuitry at a first Ethernet switch and transmitting the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the first Ethernet switch to a first Passive Optical Network Media Access Control block;

receiving the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the first Ethernet switch at the first Passive Optical Network Media Access Control block;

transmitting the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic over a Passive Optical Network with the first Passive Optical Network Media Access Control block; and

receiving the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the Passive Optical Network at a second Passive Optical Network Media Access Control block and transmitting the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic to a second Ethernet switch from the second Passive Optical Network Media Access Control block;

receiving the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic from the second Passive Optical Network Media Access Control block at the second Ethernet switch and transmitting the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic to second circuitry;

receiving the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic, and extracting the time division multiplexed data traffic from the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic at the second circuitry.

7. The method of claim 6, wherein the time division multiplexed data traffic is DS1, E1, or DS3 data traffic.

8. The method of claim 6, wherein transmitting the time division multiplexed data traffic from the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic comprises transmitting the time division multiplexed data traffic from the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic over a Gigabit Passive Optical Network.

9. The method of claim 6, further comprising decapsulating the Ethernet encapsulated Virtual Tributary encapsulated time division multiplexed data traffic to Virtual Tributary encapsulated time division multiplexed data traffic.

10. The method of claim 9, further comprising mapping the Virtual Tributary encapsulated time division multiplexed data traffic to Synchronous Optical Network data traffic.