System and method for a hybrid 1xEV-DO forward link

• US 20060050676A1
• Filed: 08/10/2005
• Published: 03/09/2006
• Est. Priority Date: 09/09/2004
• Status: Abandoned Application

• Current Assignee: Nextel Communications Inc (Deutsche Telekom AG)
• Original Assignee: Nextel Communications Inc (Deutsche Telekom AG)
• Inventors: Mansour, Nagi A.
• Application Number:
  US11/200,212
• Publication Number:
  US 20060050676A1
• Time in Patent Office: Days
• US Class Current: 370/342
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04B 7/2637 for logical channel control
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/023 Multiplexing of multicarrier modulation signals multicarrier modulation H04L27/2601

Abstract

A system and method for a hybrid 1× evolution data only (1×EV-DO) forward link are provided. The data channels of a 1×EV-DO forward link are transmitted using Orthogonal Frequency Division Multiplexing (OFDM), while pilot and Medium Access Control (MAC) channels are transmitted using Code Division Multiple Access (CDMA). The pilot and MAC channels can use CDMA in one time slot and OFDM in another time slot.

Claims

1. A method for transmitting a forward link from a base station to a mobile station, the method comprising the acts of:

transmitting control channels using Code Division Multiple Access (CDMA); and

transmitting data channels using Orthogonal Frequency Division Multiplexing (OFDM).

2. The method of claim 1, wherein the control channels are transmitted using the CDMA in one time slot and are transmitted using the OFDM in another time slot.

3. The method of claim 1, wherein using the OFDM comprises using OFDM tones.

4. The method of claim 3, wherein a number of the OFDM tones used equals 1.2288 MHz/tone spacing.

5. The method of claim 1, wherein the control channels comprise pilot and Medium Access Control (MAC) channels.

6. The method of claim 1, wherein the transmitting of control channels and data channels comprises unicast transmission.

7. A computer-readable medium encoded with a computer program for transmitting a forward link from a base station to a mobile station, the computer program comprising instructions for:

transmitting control channels using Code Division Multiple Access (CDMA); and

transmitting data channels using Orthogonal Frequency Division Multiplexing (OFDM).

8. The computer-readable medium of claim 7, wherein the control channels are transmitted using the CDMA in one time slot and are transmitted using the OFDM in another time slot.

9. The computer-readable medium of claim 7, wherein using the OFDM comprises using OFDM tones.

10. The computer-readable medium of claim 9, wherein a number of the OFDM tones used equals 1.2288 MHz/tone spacing.

11. The computer-readable medium of claim 7, wherein the control channels comprise pilot and Medium Access Control (MAC) channels.

12. The computer-readable medium of claim 7, wherein the transmitting of control channels and data channels comprises unicast transmission.

13. A base station processor, comprising:

logic for controlling transmission of control channels using Code Division Multiple Access (CDMA); and

logic for controlling transmission of data channels using Orthogonal Frequency Division Multiplexing (OFDM).

14. The base station processor of claim 13, wherein the control channels are transmitted using the CDMA in one time slot and are transmitted using the OFDM in another time slot.

15. The base station processor of claim 13, wherein using the OFDM comprises using OFDM tones.

16. The base station processor of claim 15, wherein a number of the OFDM tones used equals 1.2288 MHz/tone spacing.

17. The base station processor of claim 13, wherein the control channels comprise pilot and Medium Access Control (MAC) channels.

18. The base station processor of claim 13, wherein the transmission of control channels and data channels comprises unicast transmission.

19. A wireless communication device, comprising:

a transmitter which transmits controls channels and data channels; and

a processor including logic for controlling transmission of the control channels and the data channels, wherein the control channels are transmitted using Code Division Multiple Access (CDMA) and the data channels are transmitted using Orthogonal Frequency Division Multiplexing (OFDM).

20. The wireless communication device of claim 19, wherein the control channels are transmitted using the CDMA in one time slot and are transmitted using the OFDM in another time slot.

21. The wireless communication device of claim 19, wherein using the OFDM comprises using OFDM tones.

22. The wireless communication device of claim 21, wherein a number of the OFDM tones used equals 1.2288 MHz/tone spacing.

23. The wireless communication device of claim 19, wherein the control channels comprise pilot and Medium Access Control (MAC) channels.

24. The wireless communication device of claim 19, wherein the transmission of control channels and data channels comprises unicast transmission.