Method and system for communicating data over a wireless communication system voice channel utilizing frame gaps

• US 8,265,193 B2
• Filed: 03/17/2004
• Issued: 09/11/2012
• Est. Priority Date: 03/17/2004
• Status: Expired due to Fees

• Current Assignee: General Motors LLC (General Motors Company)
• Original Assignee: General Motors LLC (General Motors Company)
• Inventors: Madhavan, Sethu K., Laghrari, Fahd Z., Piwowarski, James J.
• Primary Examiner(s): Bocure, Tesfaldet
• Application Number:
  US10/802,147
• Publication Number:
  US 20050207511A1
• Time in Patent Office: 3,100 Days
• Field of Search: 375/295, 375/303, 375/309, 375/285, 375/296, 375/358, 375/219, 375/222, 375/271, 375/272, 375/302, 375/216, 375/217, 375/259, 375/377, 332/100, 455/68, 455/69, 455/701, 455/174.1, 455/194.1, 455/212, 455/218, 370/522, 370/528
• US Class Current: 375/295
• CPC Class Codes: H04L 1/0018 based on latency requirement
• CPC Class Codes: H04L 27/04 Modulator circuits; Transmitter circuits

Abstract

The present invention provides a method for communicating data over a voice channel of a wireless communication system. The method includes receiving a first periodic data signal and modulating the first periodic data signal to produce a second periodic data signal. Modulating the first periodic data signal includes inserting a predetermined silence period into the first periodic data signal at timed intervals to produce the second periodic data signal. The method further includes communicating the second periodic data signal over the voice channel of the wireless communication system. The method of modulating the first periodic data signal may include receiving a control signal that includes parameters for a length of the predetermined silence period and timing of the intervals, modulating the first periodic data signal responsive to the received control signal, and producing the second periodic data signal.

Claims

1. A method of communicating data over a voice channel of a wireless communication system, comprising the steps of:

generating a periodic data signal modulated with data and periods of silence, wherein the periods of silence comprise gaps in the data during which no modulation occurs; and

sending the periodic data signal as a voice communication through a vocoder and over a voice channel of a wireless communication system.

2. The method of claim 1, wherein the wireless communication system is a cellular network.

3. The method of claim 1, wherein the network transmission standard is CDMA, TDMA, or GSM.

4. The method of claim 1, wherein the generating step further comprises generating the periodic data signal with a data sequence using frequency shift keying.

5. The method of claim 1, wherein the duration of each of the periods of silence is within the range of about 25 milliseconds to about 1000 milliseconds.

6. The method of claim 1, wherein the generating step further comprises receiving a first periodic data signal and producing a second periodic data signal by modulating the first periodic data signal with the periods of silence.

7. The method of claim 6, wherein producing the second periodic data signal further comprises the steps of:

receiving a control signal, the control signal supplying parameters for a length of the periods of silence and timing between the periods of silence; and

producing the second periodic data signal by modulating the first periodic data signal based on the received control signal.

8. The method of claim 1, wherein the length of the periods of silence are variable.

9. The method of claim 8, further comprising the steps of:

receiving a response to the periodic data signal over the voice channel of the wireless carrier network; and

varying the length of the periods of silence based on the response.

10. A method of communicating data over a voice channel of a wireless communication system, comprising the steps of:

establishing a cellular voice call over a voice channel of a wireless communication system using a selected network transmission standard;

generating a periodic data signal modulated with (i) data using frequency shift keying and (ii) periods of silence during which no frequency shift keying modulation occurs; and

sending the periodic data signal to a call center over the voice channel of the wireless communication system, whereby the periodic data signal is sent over the wireless communication system using a carrier signal that is transmitted during portions of the periodic data signal that contain the data and during portions of the periodic data signal that contain the periods of silence.

11. The method of claim 10, further comprises the steps of:

(a) generating the periodic data signal using frequency shift keying; and

(b) modulating the periodic data signal with periods of silence that are added at the periodic time intervals.

12. The method of claim 11, wherein step (a) is carried out prior to step (b).

13. The method of claim 10, wherein the network transmission standard is CDMA, TDMA, or GSM.

14. The method of claim 10, wherein the periods of silence comprise frame gaps.

15. A method of communicating data over a voice channel of a wireless communication system, comprising the steps of:

generating a data signal that includes modulated data and periods of silence during which the data signal is unmodulated; and

sending the data signal as a voice communication over a voice channel of a wireless communication system.

16. The method of claim 15, wherein the wireless communication system is a cellular network.

17. The method of claim 15, wherein the network transmission standard is CDMA, TDMA, or GSM.

18. The method of claim 15, wherein the generating step further comprises generating the data signal with a data sequence using frequency shift keying.

19. The method of claim 15, wherein the duration of each of the periods of silence is within the range of about 25 milliseconds to about 1000 milliseconds.

20. The method of claim 15, wherein the generating step further comprises receiving a first periodic data signal and producing a second periodic data signal by modulating the first periodic data signal with the periods of silence.

21. The method of claim 20, wherein producing the second periodic data signal further comprises the steps of:

receiving a control signal, the control signal supplying parameters for a length of the periods of silence and timing between the periods of silence; and

producing the second periodic data signal by modulating the first periodic data signal based on the received control signal.

22. The method of claim 15, wherein the length of the periods of silence are variable.

23. The method of claim 22, further comprising the steps of:

receiving a response to the data signal over the voice channel of the wireless carrier network; and

varying the length of the periods of silence based on the response.