Circuitry and method for transmitting voice and data signals upon a wireless communication channel

• US 5,825,776 A
• Filed: 02/27/1996
• Issued: 10/20/1998
• Est. Priority Date: 02/27/1996
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Moon, Billy G.
• Primary Examiner(s): TON, DANG T
• Application Number:
  US08/607,802
• Time in Patent Office: 966 Days
• Field of Search: 370/314, 370/321, 370/329, 370/337, 370/345, 370/347, 370/349, 370/464, 370/465, 370/466, 370/493, 370/494, 370/495, 370/498, 370/535, 370/536, 370/538, 370/537, 370/541, 370/542, 370/544, 370/543, 379/53, 379/54, 379/93, 379/94, 379/95, 379/96, 379/100.16, 379/100.13, 375/239
• US Class Current: 370/437
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 2012/6459 Multiplexing, e.g. TDMA, CDMA
• CPC Class Codes: H04L 2012/6478 Digital subscriber line, e.g. DSL, ADSL, HDSL, XDSL, VDSL

Abstract

Circuitry and an associated method for transmitting voice signals together with data signals upon a wireless communication channel. The data signals are transmitted at a selected level of reliability and the voice signals are transmitted at a selected throughput level. When utilizing a High level Data Link Control (HDLC) protocol scheme, data signals are transmitted upon numbered information frames and voice signals are transmitted as unnumbered information frames. By transmitting the voice signals together with the data signals, electronic communication devices requiring transmission of voice-over-data transmissions, such as multi-media devices, voice paging devices, and voicemail devices, can be realized utilizing wireless communication channels.

Claims

1. In a radio communication station operable at least selectively to transmit a data signal upon a radio channel and a voice signal upon the radio channel to a remote station, an improvement of transmitter circuitry for transmitting the voice signal at a selected throughput rate on the radio channel, said voice transmitter circuitry comprising:

a formatter coupled to receive the voice signal and to receive the data signal, said formatter for formatting the voice signal into formatted voice signal portions pursuant to a first format and for formatting the data signal pursuant to a second format, the second format by which the data signal is formatted including numerical identifiers identifying formatted data signal portions;

a multiplexer coupled to receive the voice signal and the data signal once formatter by said formatter, said multiplexer for multiplexing the data signal and the voice signal together to form a multiplexed signal, said multiplexer immediately inserting formatted voice signal portions into the multiplexed signal when received thereat;

a radio transmitter coupled to receive the multiplexed signal formed by said multiplexer, said transmitter for transmitting the multiplexed signal, of which the voice signal forms a portion, upon the data channel at the selected throughput rate; and

a radio receiver tunable to receive acknowledgment signals generated by the remote station, the acknowledgment signals indicating reception at the remote station of the formatted data signal portions.

2. The transmitter circuitry of claim 1 wherein said formatter formats the voice signal into frames pursuant to the first format and formats the data signal into frames pursuant to the second format.

3. The transmitter circuitry of claim 2 wherein the frames into which the voice signal is formatted pursuant to the first format comprise unnumbered information frames of a high level data link control formatting scheme.

4. The transmitter circuitry of claim 2 wherein the frames into which the data signal is formatted pursuant to the second format comprise numbered information frames of a high level data link control formatting scheme.

5. The transmitter of claim 2 wherein the multiplexed signal formed by said multiplexer is formed of sequences of frames into which said formatter formats both the voice signal and the data signal.

6. The transmitter circuitry of claim 1 further comprising a coder for coding the voice signal according to a selected coding scheme and wherein said formatter is coupled to said coder to receive the voice signal once coded by said coder.

7. The transmitter circuitry of claim 6 wherein the voice signal formatted into the first format comprise expedited informational frames and wherein said multiplexer expedites insertion of the expedited informational frames into the sequence of frames forming the multiplexed signal.

8. The transmitter circuitry of claim 1 wherein said radio transmitter comprises a radio frequency modulator for modulating the multiplexed signal at a radio frequency.

9. The transmitter circuitry of claim 1 wherein said transmitter comprises an infrared frequency modulator for modulating the multiplexed signal at an infrared frequency.

10. The transmitter circuitry of claim 1 wherein the communication station comprises a first wireless transceiver operable to transceive voice-over-data signals, the wireless transceiver further having receiver circuitry for receiving receive signals transmitted thereto, the receive signals comprising acknowledgments of accurate transmission of portions of the multiplexed signal formed of the data signal formatted pursuant to the second format;

and wherein said radio transmitter repeats transmission of portions of the multiplexed signal formed of the data signal formatted pursuant to the second format in the absence of reception at said radio receiver of the acknowledgments.

11. The transmitter circuitry of claim 10 wherein the radio communication station comprises a radio telephone and wherein said formatter, said multiplexer, said radio receiver, and said radio transmitter are embodied within said radio telephone.

12. The transmitter circuitry of claim 10 wherein the radio communication station comprises a multimedia device and wherein said formatter, said multiplexer, said radio receiver, and said radio transmitter are embodied within said multimedia device.