System and method for aggregating channel segment ID's into a first section and data segments into a second section

• US 7,124,202 B2
• Filed: 11/13/2001
• Issued: 10/17/2006
• Est. Priority Date: 11/13/2001
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Lebizay, Gerald, Gish, David W., Mitchel, Henry M.
• Primary Examiner(s): Harrell, Robert B.
• Application Number:
  US10/002,522
• Publication Number:
  US 20030093550A1
• Time in Patent Office: 1,799 Days
• Field of Search: 370/351, 370/352, 370/356, 370/229, 370/230, 370/473, 712/204
• US Class Current: 709/246
• CPC Class Codes: H04L 12/5601 Transfer mode dependent, e.g. ATM
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 2012/5652 Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
• CPC Class Codes: H04L 2012/5671 Support of voice
• CPC Class Codes: H04L 65/1016 IP multimedia subsystem [IMS]
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/70 Media network packetisation

Abstract

Multiple voice channels are aggregated into a packet having a segmented data structure and sent over a packet network. The segmented data structure includes segment IDs, corresponding data segments and a packet header arranged so that all data is aligned on 8-byte boundaries for efficient processing by 64-bit processors. The data segment represents one or more milliseconds of digitized voice data, and the segment ID explicitly identifies the voice channel associated with the digitized voice data without reference to any other data in the data structure.

Claims

1. A method comprising:

assigning a plurality of segment IDs to a plurality of channels associated with a plurality of digitized segments of data;

determining a boundary number that represents a number of segment IDs to be aggregated into a first section and a number of corresponding digitized segments of data to be aggregated into a second section;

aggregating the determined boundary number of segment IDs into the first section, wherein the segment IDs share a destination node, wherein aggregating comprises, if the number of segment IDs that share the destination node is less than the boundary number of segment IDs, adding an inactive segment ID so the number of segment IDs is equal to the boundary number of segment IDs;

aggregating the determined boundary number of digitized segments of data into the second section, wherein each aggregated digitized segment of data in the second section is associated with a segment ID in the first section, wherein aggregating comprises, if an inactive segment ID is added, adding an associated inactive data segment;

combining the first section and the second section into a packet segment;

appending a network header to the packet segment to create a multi-channel packet; and

transmitting the multi-channel packet over a network.

2. The method of claim 1, wherein the boundary number is four.

3. The method of claim 2, wherein the LAN is an Ethernet, and the LAN header is a media access control (MAC) header.

4. The method of claim 1, where one or more of the channels are voice channels, and one or more of the digitized segments of data represent voice data.

5. The method of claim 4, wherein one or more of the digitized segments of voice data include at least one sample of pulse-code modulated (PCM) voice data.

6. The method of claim 1, wherein one or more of the digitized segments of data are obtained from a payload of an input packet.

7. The method of claim 6, wherein the input packet is an Real Time Protocol (RTP) packet.

8. The method of claim 1 wherein the network header includes a local area network (LAN) header and the network includes a local area network (LAN).

9. The method of claim 1, where one or more of the channels are fax channels, and one or more of the digitized segments of data represent fax data.

10. The method of claim 1, wherein one or more of the digitized segments of data are obtained from a time-division multiplexed (TDM) stream of data.

11. The method of claim 1, wherein one or more of the digitized segments of data are obtained from an asynchronous transfer multiplexed (ATM) stream of data.

12. An apparatus for arranging digitized segments of data comprising:

a data segment receiver to receive a plurality of data segments each having a digitized segment of voice data;

a voice channel identifier to determine which of a plurality of voice channels is associated with each of the received data segments and to generate an associated segment ID for each data segment;

a data segment aggregator to aggregate a determined boundary number of segment IDs into a first section and to aggregate the determined boundary number of digitized segments of data into a second section, wherein the aggregator adds an inactive segment ID if the number of segment IDs that share a destination node is less than the determined boundary number of segment IDs so the number of segment IDs is equal to the boundary number of the segment IDs, and adds an inactive data segment if the inactive segment ID is added;

a multi-channel voice packet generator to combine the first section and the second section into a packet segment and to append a local area network (LAN) header to the packet segment to create a multi-channel voice packet; and

a packet transmitter to transmit the multi-channel voice packet over a LAN.

13. The apparatus of claim 12, wherein the determined boundary number is four.

14. The apparatus of claim 12, wherein the segment IDs are each 2 bytes in length.

15. A machine accessible tangible storage medium including content that when accessed by a machine causes the machine to perform operations comprising:

assigning a plurality of segment IDs to a plurality of channels associated with a plurality of digitized segments of data;

determining a boundary number that represents a number of segment IDs to be aggregated into a first section and a number of corresponding digitized segments of data to be aggregated into a second section;

aggregating the determined boundary number of segment IDs into the first section, wherein the segment IDs share a destination node, wherein aggregating comprises, if the number of segment IDs that share the destination node is less than the boundary number of segment IDs, adding an inactive segment ID so the number of segment IDs is equal to the boundary number of segment IDs;

aggregating the determined boundary number of digitized segments of data into the second section, wherein each aggregated digitized segment of data in the second section is associated with a segment ID in the first section, wherein aggregating comprises, if an inactive segment ID is added, adding an associated inactive data segment;

combining the first section and the second section into a packet segment;

appending a network header to the packet segment to create a multi-channel packet; and

transmitting the multi-channel packet over a network.

16. The machine accessible tangible storage medium of claim 15, wherein the boundary number is four.

17. The machine accessible tangible storage medium of claim 15, wherein the network header includes a local area network (LAN) header and the network includes a local area network (LAN).