Reverse link pilot with selective gating in wireless communication

• US 9,319,201 B2
• Filed: 02/07/2014
• Issued: 04/19/2016
• Est. Priority Date: 03/29/2005
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Damnjanovic, Aleksandar, Wei, Yongbin, Odenwalder, Joseph Paul, Lundby, Stein Arne
• Primary Examiner(s): Siddiqui, Kashif
• Application Number:
  US14/175,528
• Publication Number:
  US 20140153549A1
• Time in Patent Office: 802 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 1/707 using direct sequence modulation
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04J 13/0048 Walsh
• CPC Class Codes: H04J 13/12 Generation of orthogonal codes
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0029 Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling power control H04W52/04
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/1607 Details of the supervisory signal
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0016 Time-frequency-code
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04L 5/006 Quality of the received signal, e.g. BER, SNR, water filling
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated

Abstract

A data channel is received on a forward link in wireless communication, during operation in a mode that permits transmission of a gated pilot. The gated pilot is transmitted on a reverse link if no other transmissions are being sent on the reverse link. Otherwise, a full pilot is transmitted on the reverse link.

Claims

1. An apparatus comprising:

at least one processor configured to operate in a control-hold mode that allows for transmission of a gated pilot, to receive a data channel sent on a forward link while in the control-hold mode, to transmit the gated pilot on a reverse link if no other transmissions are being sent on the reverse link, and to transmit a full pilot on the reverse link if a transmission is being sent on the reverse link; and

a memory coupled to the at least one processor.

2. The apparatus of claim 1, wherein the at least one processor is configured to generate acknowledgements for packets received on the data channel, to send the acknowledgements along with the full pilot on the reverse link, and to resume transmitting the gated pilot after completing transmission of the acknowledgements on the reverse link.

3. The apparatus of claim 1, wherein the at least one processor is configured to transition out of the control-hold mode upon receiving signaling to exit the control-hold mode or upon transmitting data on the reverse link.

4. The apparatus of claim 1, wherein the data channel is a forward packet data channel (F-PDCH) sent on a forward link carrier in a Code Division Multiple Access (CDMA) system.

17. The apparatus of claim 1, wherein the at least one processor is configured to receive data traffic on the data channel while in the control-hold mode.

18. The apparatus of claim 2, wherein the at least one processor is configured to receive the packets on the data channel while in the control-hold mode.

5. A method comprising:

operating in a control-hold mode that allows for transmission of a gated pilot;

receiving a data channel sent on a forward link while in the control-hold mode;

transmitting the gated pilot on a reverse link if no other transmissions are being sent on the reverse link; and

transmitting a full pilot on the reverse link if a transmission is being sent on the reverse link.

6. The method of claim 5, further comprising:

generating acknowledgements for packets received on the data channel;

sending the acknowledgements along with the full pilot on the reverse link; and

resuming transmission of the gated pilot after completing transmission of the acknowledgements on the reverse link.

9. The method of claim 5, further comprising transitioning out of the control-hold mode upon receiving signaling to exit the control-hold mode or upon transmitting data on the reverse link.

10. The method of claim 5, wherein the data channel is a forward packet data channel (F-PDCH) sent on a forward link carrier in a Code Division Multiple Access (CDMA) system.

19. The method of claim 5, further comprising receiving data traffic on the data channel while in the control-hold mode.

20. The method of claim 6, wherein the packets are received on the data channel in the control-hold mode.

7. An apparatus comprising:

means for operating in a control-hold mode that allows for transmission of a gated pilot;

means for receiving a data channel sent on a forward link while in the control -hold mode;

means for transmitting the gated pilot on a reverse link if no other transmissions are being sent on the reverse link; and

means for transmitting a full pilot on the reverse link if a transmission is being sent on the reverse link.

8. The apparatus of claim 7, further comprising:

means for generating acknowledgements for packets received on the data channel;

means for sending the acknowledgements along with the full pilot on the reverse link; and

means for resuming transmission of the gated pilot after completing transmission of the acknowledgements on the reverse link.

11. The apparatus of claim 7, further comprising means for transitioning out of the control-hold mode upon receiving signaling to exit the control-hold mode or upon transmitting data on the reverse link.

12. The apparatus of claim 7, wherein the data channel is a forward packet data channel (F-PDCH) sent on a forward link carrier in a Code Division Multiple Access (CDMA) system.

13. A non-transitory computer-readable medium comprising:

code for causing at least one computer to operate in a control-hold mode that allows for transmission of a gated pilot;

code for causing the at least one computer to receive a data channel sent on a forward link while in the control-hold mode;

code for causing the at least one computer to transmit the gated pilot on a reverse link if no other transmissions are being sent on the reverse link; and

code for causing the at least one computer to transmit a full pilot on the reverse link if a transmission is being sent on the reverse link.

14. The computer-readable medium of claim 13, further comprising:

code for causing the at least one computer to generate acknowledgements for packets received on the data channel;

code for causing the at least one computer to send the acknowledgements along with the full pilot on the reverse link; and

code for causing the at least one computer to resume transmission of the gated pilot after completing transmission of the acknowledgements on the reverse link.

15. The computer-readable medium of claim 13, further comprising code for causing the at least one computer to transition out of the control-hold mode upon receiving signaling to exit the control-hold mode or upon transmitting data on the reverse link.

16. The computer-readable medium of claim 13, wherein the data channel is a forward packet data channel (F-PDCH) sent on a forward link carrier in a Code Division Multiple Access (CDMA) system.