Data formats for telecommunications networks

• US 5,526,349 A
• Filed: 12/13/1994
• Issued: 06/11/1996
• Est. Priority Date: 04/15/1994
• Status: Expired due to Term

• Current Assignee: Alcatel-Lucent USA, Inc. (Nokia Corporation)
• Original Assignee: DSC Communications Corp. (Nokia Corporation)
• Inventors: Thompson, Kathy A., Hogg, Raymond L., Brewer, W. Keith, Diaz, Felix V., Raz, Daniel J., Langdon, Gregory L.
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): BLUM, RUSSELL
• Application Number:
  US08/356,445
• Time in Patent Office: 546 Days
• Field of Search: 370/53, 370/58.1, 370/58.2, 370/58.3, 370/60, 370/60.1, 370/67, 370/79, 370/85.1, 370/85.2, 370/85.3, 370/85.4, 370/85.5, 370/85.6, 370/94.1, 370/94.2, 370/99 , 370/110.1
• US Class Current: 370/392
• CPC Class Codes: H04J 2203/0089 Multiplexing, e.g. coding, scrambling, SONET
• CPC Class Codes: H04J 3/1611 Synchronous digital hierarchy [SDH] or SONET H04J3/1664 takes precedence for interactions with OTN
• 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 2012/5613 Bus (including DQDB)
• CPC Class Codes: H04L 2012/5658 using the AAL5
• CPC Class Codes: H04L 2012/5665 Interaction of ATM with other protocols
• CPC Class Codes: H04L 2012/5672 Multiplexing, e.g. coding, scrambling
• CPC Class Codes: H04L 2012/5679 Arbitration or scheduling
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections

Abstract

Three data formats for telecommunication networks are provided. One format is an asynchronous packet bus overlay datagram format (122) constructed to include an internal datagram header (140) and a datagram payload (141) concatenated with the internal datagram header. The internal datagram header comprises a destination address (146), a weighted age (152), and a source address (14). A second format is a wideband bus overlay format (126) comprising three header octets and a plurality of payload octets such that the data is formatted into one of a plurality of industry standard isochronous wideband data formats. A third format is a narrow band bus overlay format (124) comprising a plurality of signaling octets, a plurality of octets concatenated with the first plurality of signaling octets to hold data, and a common system multiframe structure.

Claims

1. A packet bus overlay datagram format, comprising:

an internal datagram header comprising a destination address, a weighted age, and a source address, wherein the weighted age includes an age of the datagram and a weighting factor associated with the datagram; and

a datagram payload concatenated with the internal datagram header comprising payload data.

2. The packet bus overlay datagram format of claim 1, wherein the internal datagram header comprises eleven octets of data.

3. The packet bus overlay datagram format of claim 1, wherein the datagram payload comprises fifty-three octets of data.

4. The packet bus overlay datagram format of claim 3, wherein the datagram payload comprises fifty-three octets of data representing information held in one asynchronous transfer mode cell.

5. A wideband bus overlay data format, comprising;

a first header octet;

a second header octet concatenated with the first header octet;

a third header octet concatenated with the second header octet, and

a plurality of payload octets concatenated with the third header octet such that data formatted in one of a plurality of isochronous wideband data formats is adaptable to the wideband bus overlay data format.

6. The wideband bus overlay data format of claim 5, wherein the plurality of payload octets comprises seven hundred eighty three octets, and the one of a plurality of isochronous wideband data formats comprises an STS-1 synchronous payload envelope.

7. The wideband bus overlay data format of claim 5, wherein the plurality of payload octets comprises seven hundred eighty three octets, and the one of a plurality of isochronous wideband data formats comprises a TU-3.

8. A narrowband bus overlay data format, comprising;

a first plurality of octets operable to hold data representing a plurality of signaling bits;

a second plurality of octets concatenated with the first plurality of octets operable to hold data representing transmitted information such that a plurality of isochronous narrowband data formats are adaptable to the narrowband bus overlay data format; and

a common system multiframe structure containing at least one of the first plurality of octets and one of the second plurality of octets wherein the common system multiframe system is of a fixed length and supports a plurality of isochronous narrowband data formats.

9. The narrowband bus overlay data format of claim 8, wherein the plurality of isochronous narrowband data formats comprises a T1 structure and an E1 structure.