Combining narrowband applications with broadband transport

• US 7,457,280 B2
• Filed: 12/12/2001
• Issued: 11/25/2008
• Est. Priority Date: 07/14/1999
• Status: Expired due to Fees

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Mattsson, Håkan, Thorsen, Lars, Gundersen, Hans, Lindquist, Jan
• Primary Examiner(s): Orgad; Edan
• Assistant Examiner(s): HALIYUR, VENKATESH N
• Application Number:
  US10/021,940
• Publication Number:
  US 20020122426A1
• Time in Patent Office: 2,540 Days
• Field of Search: 370/401, 370/466, 370/467, 370/426, 370352-356, 370396-398, 370252-261, 370385-410
• US Class Current: 370/352
• CPC Class Codes: H04L 12/5601 Transfer mode dependent, e.g. ATM
• CPC Class Codes: H04L 12/64 Hybrid switching systems
• CPC Class Codes: H04L 12/6402 Hybrid switching fabrics
• CPC Class Codes: H04L 2012/5618 Bridges, gateways [GW] or interworking units [IWU]
• CPC Class Codes: H04L 2012/562 Routing
• CPC Class Codes: H04L 2012/563 Signalling, e.g. protocols, reference model
• CPC Class Codes: H04L 2012/5632 Bandwidth allocation
• CPC Class Codes: H04L 2012/5656 using the AAL2
• CPC Class Codes: H04L 2012/5663 Support of N-ISDN
• CPC Class Codes: H04L 2012/5671 Support of voice
• CPC Class Codes: H04L 2012/6475 N-ISDN, Public Switched Telephone Network [PSTN]
• CPC Class Codes: H04L 2012/6486 Signalling Protocols
• CPC Class Codes: H04L 45/08 Learning-based routing, e.g. using neural networks or artificial intelligence
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/11 Identifying congestion
• CPC Class Codes: H04L 47/122 by diverting traffic away from congested entities
• CPC Class Codes: H04L 47/125 by balancing the load, e.g. traffic engineering
• CPC Class Codes: H04L 47/15 in relation to multipoint traffic arrangements for broadcast or multicast in data networks H04L12/18
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/70 Admission control; Resource allocation
• CPC Class Codes: H04L 47/724 : at intermediate nodes, e.g. resource reservation protocol [RSVP]
• CPC Class Codes: H04L 47/801 : Real time traffic
• CPC Class Codes: H04L 47/822 : Collecting or measuring resource availability data
• CPC Class Codes: H04L 49/606 : Hybrid ATM switches, e.g. ATM&STM, ATM&Frame Relay or ATM&IP
• CPC Class Codes: H04L 65/1043 : Gateway controllers, e.g. media gateway control protocol [MGCP] controllers
• CPC Class Codes: H04L 65/1101 : Session protocols
• CPC Class Codes: H04Q 11/04 : for time-division multiplexing H04Q11/0001 takes precedence
• CPC Class Codes: H04Q 11/0478 : Provisions for broadband connections
• CPC Class Codes: H04Q 2213/1302 : Relay switches
• CPC Class Codes: H04Q 2213/1304 : Coordinate switches, crossbar, 4/2 with relays, coupling field
• CPC Class Codes: H04Q 2213/13093 : Personal computer, PC
• CPC Class Codes: H04Q 2213/13096 : Digital apparatus individually associated with a subscriber line, digital line circuits
• CPC Class Codes: H04Q 2213/13097 : Numbering, addressing
• CPC Class Codes: H04Q 2213/13102 : Common translator
• CPC Class Codes: H04Q 2213/13106 : Microprocessor, CPU
• CPC Class Codes: H04Q 2213/13141 : Hunting for free outlet, circuit or channel
• CPC Class Codes: H04Q 2213/13176 : Common channel signaling, CCS7
• CPC Class Codes: H04Q 2213/13196 : Connection circuit/link/trunk/junction, bridge, router, gateway
• CPC Class Codes: H04Q 2213/13199 : Modem, modulation
• CPC Class Codes: H04Q 2213/13204 : Protocols
• CPC Class Codes: H04Q 2213/13205 : Primary rate access, PRI
• CPC Class Codes: H04Q 2213/13209 : ISDN
• CPC Class Codes: H04Q 2213/1327 : Release and resetting of connection
• CPC Class Codes: H04Q 2213/1329 : Asynchronous transfer mode, ATM
• CPC Class Codes: H04Q 2213/13292 : Time division multiplexing, TDM
• CPC Class Codes: H04Q 2213/13298 : Local loop systems, access network
• CPC Class Codes: H04Q 2213/1332 : Logic circuits
• CPC Class Codes: H04Q 2213/13335 : Simulation, emulation
• CPC Class Codes: H04Q 2213/1334 : Configuration within the switch
• CPC Class Codes: H04Q 2213/13345 : Intelligent networks, SCP
• CPC Class Codes: H04Q 2213/13377 : Recorded announcement
• CPC Class Codes: H04Q 2213/13383 : Hierarchy of switches, main and subexchange, e.g. satellite exchange
• CPC Class Codes: H04Q 2213/13399 : Virtual channel/circuits
• CPC Class Codes: H04Q 2213/13405 : Dual frequency signaling, DTMF
• CPC Class Codes: H04Q 3/0016 : Arrangements providing connection between exchanges
• CPC Class Codes: H04Q 3/0025 : Provisions for signalling

Abstract

The combination of narrowband applications with broadband transport may be enabled with a tri-level nodal communications architecture including a call control node having both switching intelligence and narrowband switching fabric, a plurality of connection control nodes having broadband switching fabric and an intermediate node for interworking between the call control node and the plurality of connection control nodes. The intermediate node includes a database providing an indication of which format(s) of multiple formats a given connection control node uses. When an incoming communication arrives to/from a specific connection control node, the database is consulted to ascertain the corresponding particular format(s) used by that specific connection control node. Accordingly, the incoming communication may be translated responsive to the ascertained particular format(s).

Claims

1. An interworking node operatively connectable to a plurality of call control nodes each including switching intelligence and narrowband switching fabric and a plurality of connection control nodes each including broadband switching fabric and each being capable of processing a communication using one of a plurality of formats, said interworking node comprising:

means for interworking between said plurality of call control nodes and said plurality of connection control nodes;

a database communicably coupled to said means for interworking for linking a particular one of said plurality of connection control nodes with a corresponding one of said plurality of formats wherein a call control instruction transmitted by said particular one of said call control nodes and forwarded by said interworking node to one of said connection control nodes is used for controlling call connection over said broadband switching fabric within said one connection control node and wherein said call control instruction is translated by said interworking node into said one of said plurality of formats compatible with said one connection control node;

means for receiving a communication from or for said particular connection control node;

means for ascertaining said corresponding format associated with said particular connection control node by accessing said database; and

means for translating said communication responsive to said ascertained corresponding format.

2. The system of claim 1, wherein said plurality of formats comprises at least one format in accordance with the H.248 standard.

3. The system of claim 2, wherein said plurality of formats comprises a binary format and a text format.

4. A system for combining narrowband and broadband transport mechanisms in a communications network, comprising:

a call control node including switching intelligence and narrowband switching fabric;

a plurality of connection control nodes each including broadband switching fabric and each being capable of processing a communication using one of a plurality of formats and relying on said switching intelligence within said call control node for providing call connection control over said broadband switching fabric;

an intermediate node operatively connectable to said call control node and said plurality of connection control nodes, said intermediate node being adapted to interwork between said call control node and said plurality of connection control nodes, said intermediate node further including a database for linking a particular one of said plurality of connection control nodes with a corresponding one of said plurality of formats and wherein said intermediate node translates messages associated with said call connection control issued by said call control node into said format compatible with a corresponding one of said plurality of connection control nodes;

wherein said intermediate node is further adapted to receive a communication from or for said particular connection control node and ascertain said corresponding format associated with said particular connection control node by accessing said database, said intermediate node being further adapted to translate said communication responsive to said ascertained corresponding format.

5. The system of claim 4, wherein said plurality of connection control nodes comprise at least part of a broadband network.

6. The system of claim 5, wherein said plurality of connection control nodes comprise media gateways. and said intermediate node comprises mediation logic.

7. The system of claim 5, wherein said plurality of formats comprises at least one format in accordance with the H.248 standard.

8. The system of claim 7, wherein said plurality of formats comprises a binary format and a text format.

9. A method for combining narrowband and broadband transport mechanisms in a communications network, comprising the steps of:

providing a call control node including switching intelligence and narrowband switching fabric, a plurality of connection control nodes each including broadband switching fabric and each being capable of processing a communication using one of a plurality of formats and an intermediate node for interworking between said call control node and said plurality of connection control nodes;

linking a particular one of said plurality of connection control nodes with a corresponding one of said plurality of formats at said intermediate node;

wherein said plurality of connection control nodes rely on said switching intelligence within said call control node for providing call connection control over said broadband switching fabric and wherein said intermediate node forwarding a message associated with said call connection control transmitted by said call control node to a particular one of said connection control nodes translates the format of said message to be compatible with said particular one of said connection control nodes;

receiving a communication from or for said particular connection control node at said intermediate node;

ascertaining said corresponding format associated with said particular connection control node; and

translating said communication responsive to said ascertained corresponding format.

10. The method of claim 9, wherein said step of linking further comprises the step of:

linking said particular connection control node with said corresponding format at said intermediate node, said corresponding format being a format in accordance with the H.248 standard.

11. The method of claim 10, wherein said step of linking further comprises the step of:

linking said particular connection control node with said corresponding format at said intermediate node, said corresponding format being a binary format or a text format.

12. A method for processing a communication associated with a particular one of a plurality of connection control nodes at an intermediate node in a communications network combining narrowband and broadband transport mechanisms, said communications network further comprising a call control node including switching intelligence and narrowband switching fabric, each of said connection control nodes including broadband switching fabric broadband switching fabric each being capable of processing a communication using one of a plurality of formats, said intermediate node interworking between said call control node and said plurality of connection control nodes, said method comprising the steps of:

linking a particular one of said plurality of connection control nodes with a corresponding one of said plurality of formats at said intermediate node;

wherein said plurality of connection control nodes rely on said switching intelligence within said call control node for providing call connection control over said broadband switching fabric and wherein said intermediate node forwarding a message associated with said call connection control transmitted by said call control node to a particular one of said connection control nodes translates the format of said message to be compatible with said particular one of said connection control nodes;

receiving a communication message from said particular connection control node at said intermediate node wherein said communication message provides certain call control instructions to said broadband switching fabric within a particular one of said connection control nodes;

ascertaining a corresponding format used by said particular connection control node in processing said communication message, said corresponding format being one of a plurality of formats usable by said plurality of connection control nodes; and

translating said communication message responsive to said ascertained corresponding format.

13. The method of claim 12, wherein said step of ascertaining further comprises the step of:

ascertaining said corresponding format at said intermediate node, said corresponding format being a format in accordance with the H.248 standard.

14. The method of claim 13, wherein said step of ascertaining further comprises the step of:

ascertaining said corresponding format at said intermediate node, said corresponding format being a binary format or a text format.

15. A method for processing a communication associated with a particular one of a plurality of connection control nodes at an intermediate node in a communications network combining narrowband and broadband transport mechanisms, said communications network further comprising a call control node including switching intelligence and narrowband switching fabric, each of said connection control nodes including broadband switching fabric, said intermediate node interworking between said call control node and said plurality of connection control nodes, said method comprising the steps of:

receiving a communication message for a particular one of said connection control nodes at said intermediate node wherein said communication message generated by said switching intelligence within said call control node for providing call control instructions to said broadband switching fabric within said particular one of said connection control nodes;

ascertaining a corresponding format usable by said particular connection control node in processing said communication message, said corresponding format being one of a plurality of formats usable by said plurality of connection control nodes;

translating said communication message responsive to said ascertained corresponding format; and

transmitting said translated communication from said intermediate node to said particular connection control node.

16. The method of claim 15, wherein said step of ascertaining further comprises the step of:

ascertaining said corresponding format at said intermediate node, said corresponding format being a format in accordance with the H.248 standard.

17. The method of claim 16, wherein said step of ascertaining further comprises the step of:

ascertaining said corresponding format at said intermediate node, said corresponding format being a binary format or a text format.