IP Library Granted Patent US 9,118,524
Granted Patent B2
US 9,118,524 · App. 13/872,346 · Granted Aug 25, 2015

Soft packet dropping during digital audio packet-switched communications

Inventor: Gary Whiton Pearson (Cedar Park, TX)
Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
H04L29/06176H04L29/06027H04L47/10H04L47/12H04L47/23H04L47/2416H04L47/2433H04L47/32H04L65/00H04L65/602
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Quick Facts
Patent No.
US 9,118,524
App. No.
13/872,346
Granted
Aug 25, 2015
Kind
B2
Abstract

A method of packetizing digital information for packet-switched communications includes placing, at a transmitting device with memory and a processor, a most significant bit of a digital voice sample into a variable-length most significant bit packet having a high transmission priority for transmission over a packet-switched network in which a node receives the packet and independently determines how to route the packet. At the transmitting device, a least significant bit of the digital voice sample is placed into a variable-length least significant bit packet having a low transmission priority for transmission over the packet-switched network. Prioritization of packets as having a high transmission priority or low transmission priority is independent of content characteristics of digital voice samples with elements contained therein.

Claims (45)

1. A method of packetizing digital information for packet-switched communications, comprising:

placing, at a transmitting device with memory and a processor, a most significant bit of a digital voice sample into a variable-length most significant bit packet having a high transmission priority for transmission over a packet-switched network in which a node receives the packet and independently determines how to route the packet, and

placing, at the transmitting device, a least significant bit of the digital voice sample into a variable-length least significant bit packet having a low transmission priority for transmission over the packet-switched network,

wherein prioritization of packets as having a high transmission priority or low transmission priority is independent of content characteristics of digital voice samples with elements contained therein.

2. The method of claim 1 , further comprising:

transmitting the most significant bit packet and the least significant bit packet to a router that implements routing prioritization, the router dropping the least significant bit packet and forwarding the most significant bit packet.

3. The method of claim 2 ,

wherein the digital voice sample is substantially reassembled without the least significant bit of the least significant bit packet.

4. The method of claim 3 ,

wherein the least significant bit is represented by replacement bits to reassemble the digital voice sample.

5. The method of claim 1 , further comprising:

transmitting the most significant bit packet and the least significant bit packet to a router that implements routing prioritization, the router forwarding the least significant bit packet and the most significant bit packet.

6. The method of claim 1 ,

wherein the transmitting device is a mobile device.

7. The method of claim 1 ,

wherein the priority of each of the most significant bit packet and the least significant bit packet is indicated by three priority bits.

8. A system that packetizes digital information for packet-switched communications, comprising:

a transmitting device with memory and a processor that places a most significant bit of a digital voice sample into a variable-length most significant bit packet having a high transmission priority for transmission over a packet-switched network in which a node receives the packet and independently determines how to route the packet, and that places a least significant bit of the digital voice sample into a variable-length least significant bit packet having a low transmission priority for transmission over the packet-switched network,

wherein prioritization of packets as having a high transmission priority or low transmission priority is independent of content characteristics of digital voice samples with elements contained therein.

9. The system of claim 8 ,

wherein the transmitting device further transmits the most significant bit packet to a router that implements routing prioritization, the router dropping the least significant bit packet and forwarding the most significant bit packet.

10. The system of claim 9 ,

wherein the digital voice sample is substantially reassembled without the least significant bit of the least significant bit packet.

11. The system of claim 10 ,

wherein the least significant bit is represented by replacement bits to reassemble the digital voice sample.

12. The system of claim 8 ,

wherein the transmitting device further transmits the most significant bit packet to a router that implements routing prioritization, the router forwarding the least significant bit packet and the most significant bit packet.

13. The system of claim 8 ,

wherein the priority of each of the most significant bit packet and the least significant bit packet is indicated by three priority bits.

14. The system of claim 8 ,

wherein the transmitting device comprises a mobile device.

15. The system of claim 14 ,

wherein the most significant bit is the sign bit and the three exponent bits, and the least significant bit is the four mantissa bits.

16. A non-transitory computer readable medium that stores a computer program for packetizing digital information for packet-switched communications, the computer program, when executed by a processor, causing a computer to perform acts comprising:

placing, at a transmitting device with a memory and a processor, a most significant bit of a digital voice sample into a variable-length most significant bit packet having a high transmission priority for transmission over a network in which a node receives the packet and independently determines how to route the packet;

placing, at the transmitting device, a least significant bit of the digital voice sample into a variable-length least significant bit packet having a low transmission priority for transmission over the packet-switched network,

wherein prioritization of packets as having a high transmission priority or low transmission priority is independent of content characteristics of digital voice samples with elements contained therein.

17. The non-transitory computer readable medium of claim 16 ,

wherein the digital voice sample is substantially reassembled without the least significant bit of the least significant bit packet.

18. The non-transitory computer readable medium of claim 16 ,

wherein the least significant bit is represented by replacement bits to reassemble the digital voice sample.

19. The non-transitory computer readable medium of claim 16 ,

wherein the priority of each of the most significant bit packet and the least significant bit packet is indicated by three priority bits.

20. The non-transitory computer readable medium of claim 16 ,

wherein the transmitting device comprises a mobile device.

Assignments (3)
CHANGE OF NAME Recorded May 4, 2020
From: AT&T KNOWLEDGE VENTURES, L.P.
To: AT&T INTELLECTUAL PROPERTY I, L.P.
Reel/Frame 052559/0267 →
CHANGE OF NAME Recorded Apr 30, 2020
From: SBC KNOWLEDGE VENTURES, L.P.
To: AT&T KNOWLEDGE VENTURES, L.P.
Reel/Frame 052545/0923 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 29, 2013
From: PEARSON, GARY WHITON
To: SBC KNOWLEDGE VENTURES, L.P.
Reel/Frame 030307/0279 →
Continuity (3)
Continuation 12862395 · Aug 24, 2010
Continuation 10437393 · May 14, 2003
Related Publication 20130235723A1 · Sep 12, 2013