Reducing collision probability for VoIP packets

• US 20070070936A1
• Filed: 09/28/2005
• Published: 03/29/2007
• Est. Priority Date: 09/28/2005
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Jain, Nikhil, Stamoulis, Anastasios
• Granted Patent: US 7,852,801 B2
• Time in Patent Office: Days
• US Class Current: 370/328
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]

Abstract

A mobile communications device is described that includes a processor configured to establish a network connection with a server in a network and a data generator under the control of the processor that is configured to periodically generate a data unit at a rate having a fixed period. The mobile communications device also includes a transceiver configfured to transmit, via the network connection, the data unit during one of the plurality of slots, each slot being an adjacent fractional portion of the fixed period.

Claims

1. A mobile communications device, comprising:

a processor configured to establish a connection with a server in a random access network;

a data generator under the control of the processor and configured to periodically generate a data unit at a rate having a fixed period; and

a transceiver under control of the processor and configured to transmit the data unit to the server during a particular time slot in each of the fixed periods.

2. The mobile communications device of claim 1, wherein the particular slot is one of a plurality of adjacent slots, each of the plurality of slots has associated therewith a respective slot index.

3. The mobile communications device of claim 2, wherein the plurality of slots are equal in size.

4. The mobile communications device of claim 2, wherein the plurality of slots, in aggregate are substantially equal to the fixed period.

5. The mobile communications device of claim 2, wherein each of the plurality of slots is of sufficient length to permit the data unit to be transmitted before a beginning of an adjacent slot.

6. The mobile communications device of claim 2, wherein the processor is further configured to receive from the server a particular slot index.

7. The mobile communications device of claim 6, wherein the particular slot corresponds to the slot associated with the particular slot index.

8. The mobile communications device of claim 1, wherein the data unit comprises a voice over IP packet.

9. The mobile communications device of claim 1, wherein the network comprises a wireless LAN.

10. A mobile communications device comprising:

a processor configured to establish a connection with a server in a random access network;

a vocoder controlled by the processor and configured to generate a voice packet at a rate having a fixed period;

the processor further configured to buffer the voice packet until a transmit time; and

a transceiver, in communications with the buffer and controlled by the processor, said transceiver configured to transmit the voice packet at the transmit time, wherein the transmit time corresponds to a particular time slot in each of the fixed periods.

11. The mobile communications device of claim 10, wherein the particular slot is one of a plurality of slots, each of the plurality of slots has associated therewith a respective slot index.

12. The mobile communications device of claim 11, wherein each of the plurality of slots is of sufficient length to permit the voice packet to be transmitted before a beginning of an adjacent slot.

13. The mobile communications device of claim 11, wherein the processor is further configured to receive a particular slot index from a server via the network connection.

14. The mobile communications device of claim 13, wherein the particular time slot corresponds to the slot associated with the particular slot index.

15. The mobile communications device of claim 10, wherein the network comprises at least a wireless LAN.

16. A mobile communications device comprising:

a processor configured to identify a particular transmission slot;

a processor configured to establish a connection with a server in a random access network, the processor being further configured to periodically generate a data unit at a substantially fixed period and identify a particular transmission slot in each of the fixed periods; and

a transceiver configured to transmit, to the server, the data unit during the particular transmission slot.

17. The mobile communications device of claim 16, wherein the processor is further configured to identify each of a plurality of transmission slots using an associated slot index value.

18. The mobile communications device of claim 17, wherein the processor is further configured to receive an assigned slot index from the server.

19. The mobile communications device of claim 18, wherein the particular transmission slot corresponds to the slot associated with the assigned slot index.

20. The mobile communications device of claim 16, wherein the network comprises at least a wireless LAN connection.

21. A mobile communications device, comprising:

means for establishing a network connection with a server over a random access network and periodically generating a data unit at a rate having a fixed period; and

means for transmitting the data unit during a particular transmission slot.