Method and apparatus for compressing and transmitting ultra high speed data

• US 8,503,372 B2
• Filed: 10/23/2006
• Issued: 08/06/2013
• Est. Priority Date: 11/07/1996
• Status: Expired due to Fees

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Kurtz, Scott David
• Primary Examiner(s): Patel, Jay P
• Application Number:
  US11/584,944
• Publication Number:
  US 20070036124A1
• Time in Patent Office: 2,479 Days
• Field of Search: 370/329, 370/347, 370/337, 370/344
• US Class Current: 370/329
• CPC Class Codes: H03M 7/30 Compression speech analysis-synthesis for redundancy reduction G10L19/00; for image communication H04N; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
• CPC Class Codes: H04B 14/046 Systems or methods for reducing noise or bandwidth
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 25/4927 using levels matched to the quantisation levels of the channel
• CPC Class Codes: H04L 5/06 the signals being represented by different frequencies combined with time-division multiplexing H04L5/26
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• 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
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Voiceband compression techniques are employed in order to enable an RF telecommunications base station to accommodate data signals of high speed voiceband modems and FAX machines. An Ultra-High Speed Codec supports voiceband modem and FAX transmissions up to 14.4 kb/s and operates using four 16-phase RF slots. Because these codecs transmit information over several RF slots which can be contiguous, the slots within RF communication channels are dynamically allocated. The Dynamic Time slot/Bandwidth Allocation feature detects and monitors the data transmission and forms a data channel from the necessary number of slots.

Claims

1. A wireless communication unit, the communication unit comprising:

circuitry configured to;

generate data for transmission to a second communication unit;

encode the data using a codec selected from a plurality of codecs, wherein each of the plurality of codecs is associated with a data rate, and wherein one of the plurality of codecs is an excitation linear prediction codec;

forward error correction (FEC) encode the encoded data according to a selected type of FEC encoding;

modulate the FEC encoded data according to a selected modulation scheme; and

transmit the modulated FEC encoded data to the second communication unit in at least one time slot;

wherein the selected modulation scheme, and the selected type of FEC encoding are based on the selected codec.

2. The communication unit of claim 1, wherein the selected modulation scheme is eight phase shift keying (8-PSK).

3. The communication unit of claim 1, wherein the communication unit is a mobile unit.

4. The communication unit of claim 1, wherein the communication unit is a network node.

5. The communication unit of claim 1, wherein the modulated FEC encoded date is transmitted in multiple time slots of a time division multiple access (TDMA) frame.

6. The communication unit of claim 5, wherein a number of time slots used for transmission of the modulated FEC encoded data is based on the selected codec.

7. The communication unit of claim 1, wherein the selected codec is based on channel conditions.

8. The communication unit of claim 1, wherein the channel conditions include an availability of time slots for assignment.

9. A method for use by a wireless communication unit, the method comprising:

generating data for transmission to a second communication unit;

encoding the data using a codec selected from a plurality of codecs, wherein each of the plurality of codecs is associated with a data rate, and wherein one of the plurality of codecs is an excitation linear prediction codec;

forward error correction encoding the encoded data according to a selected type of FEC encoding;

modulating the FEC encoded data according to a selected modulation scheme; and

transmitting the modulated FEC encoded data to a second communication unit in at least one time slot;

wherein the selected modulation scheme, and the selected type of FEC encoding are based on the selected codec.

10. The method of claim 9, wherein the selected modulation scheme is eight phase shift keying (8-PSK).

11. The method of claim 9, wherein the communication unit is a mobile unit.

12. The method of claim 9, wherein the communication unit is a network node.

13. The method of claim 9, wherein the modulated FEC encoded date is transmitted in multiple time slots of a time division multiple access (TDMA) frame.

14. The method of claim 13, wherein a number of time slots used for transmission of the modulated FEC encoded data is based on the selected codec.

15. The method of claim 9, wherein the selected codec is based on channel conditions.

16. The method of claim 9, wherein the channel conditions include an availability of time slots for assignment.