Method and apparatus for carrying packetized voice and data in wireless communication networks

• US 7,355,999 B2
• Filed: 12/20/2002
• Issued: 04/08/2008
• Est. Priority Date: 07/07/2000
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Leung, Nikolai K. N., Chen, Tao, Hsu, Raymond Tah-Sheng
• Primary Examiner(s): LY, ANH VU H
• Application Number:
  US10/327,355
• Publication Number:
  US 20030086378A1
• Time in Patent Office: 1,936 Days
• Field of Search: 370/208, 370/209, 370/310.1, 370/310.2, 370/319, 370/320, 370/328, 370/329, 370/335, 370/338, 370/342, 370/437, 370/441, 370/535
• US Class Current: 370/329
• CPC Class Codes: H04L 1/18 Automatic repetition systems, e.g. Van Duuren systems
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365

Abstract

A method and apparatus for reducing transmission delay in a wireless communication system that carries packetized voice and data information. Interruptions in the traffic channels cause loss of synchronization between a header compressor and a header decompressor. Rather than transmitting resynchronization information on the traffic channel, the information dropped by an interruption is re-transmitted on a non-traffic channel in parallel with the traffic channel. At the remote station, information from the traffic channel and the non-traffic channel is reassembled before input into the decompressor. Alternatively, the non-traffic channel can be used to carry overflow information so that a higher average data rate can be achieved than the average data rate of the traffic channel alone.

Claims

1. A method for increasing an average data transmission rate in a wireless communication system carrying packetized information, comprising:

determining the bit size of a payload for transmission from a transmitter to at least one receiver, wherein the transmitter communicates with the at least one receiver through a traffic channel and at least one additional channel;

if the bit size of the payload is less than or equal to a maximum frame size of a traffic channel frame, then transmitting the payload on the traffic channel; and

if the bit size of the payload is greater than the maximum frame size of the traffic channel frame, then transmitting the payload on the traffic channel and a control channel concurrently, wherein the payload has been distributed between a traffic channel frame and a control channel frame.

2. The method of claim 1, wherein the at least one additional channel includes a supplemental channel.

3. The method of claim 2, further comprising:

if the bit size of the payload is greater than the sum of the maximum frame size of the traffic channel frame and a maximum frame size of the control channel frame, then transmitting the payload on the traffic channel, the control channel, and the supplemental channel concurrently, wherein the payload has been distributed between the traffic channel frame, the control channel frame, and a supplemental channel frame.

4. The method of claim 3, further comprising:

if the bit size of the payload is greater than the sum of the maximum frame size of the traffic channel frame, the maximum frame size of the control channel frame, and the maximum frame size of the supplemental channel frame, then

transmitting a portion of the payload on the traffic channel, the control channel, and the supplemental channel; and

storing a remaining portion of the payload in a buffer.

5. The method of claim 1, wherein the step of transmitting the payload on the traffic channel is performed at a first rate on the traffic channel.

6. The method of claim 1, wherein the step of transmitting the payload on the traffic channel and the control channel concurrently is performed at a first rate on the traffic channel and a second rate on the control channel.

7. The method of claim 2, wherein the step of transmitting the payload on the traffic channel, the control channel, and the supplemental channel is performed at a first rate on the traffic channel, a second rate on the control channel, and a third rate on the supplemental channel.

8. An apparatus for increasing an average data transmission rate in a wireless communication system carrying packetized information, comprising:

means for determining the bit size of a payload for transmission from a transmitter to at least one receiver, wherein the transmitter communicates with the at least one receiver through a traffic channel and at least one additional channel;

means for transmitting the payload on the traffic channel if the bit size of the payload is less than or equal to a maximum frame size of a traffic channel frame; and

means for transmitting the payload on the traffic channel and a control channel concurrently if the bit size of the payload is greater than the maximum frame size of the traffic channel frame, wherein the payload has been distributed between a traffic channel frame and a control channel frame.

9. An apparatus for increasing an average data transmission rate in a wireless communication system carrying packetized information, comprising:

a processor;

a storage element coupled to the processor comprising an instruction set executable by the processor, wherein the instruction set comprise instructions for;

determining the bit size of a payload for transmission from a transmitter to at least one receiver, wherein the transmitter communicates with the at least one receiver through a traffic channel and at least one additional channel;

transmitting the payload on the traffic channel if the bit size of the payload is less than or equal to a maximum frame size of a traffic channel frame; and

transmitting the payload on the traffic channel and a control channel concurrently if the bit size of the payload is greater than the maximum frame size of the traffic channel frame, wherein the payload has been distributed between a traffic channel frame and a control channel frame.