# US 2014/0153549 A1 · Reverse link pilot with selective gating in wireless communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153549 A1 - Document ID: US20140153549A1 - Status: Published application - Kind: A1 - Application number: 14/175,528 - Filed: 2014-02-07 - Published: 2014-06-05 - Earliest claimed: 2005-03-29 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: ALEKSANDAR DAMNJANOVIC; JOSEPH PAUL ODENWALDER; STEIN ARNE LUNDBY; YONGBIN WEI - Web page: https://patentgrep.com/patent/US20140153549A1 ## CPC - H04L 5/0057: {Physical resource allocation for CQI} - H04J 11/00: Orthogonal multiplex systems, {e.g. using WALSH codes}(H04J13/00 takes precedence) - H04J 13/0048: {Walsh} - H04J 13/12: Generation of orthogonal codes - H04L 1/0026: {Transmission of channel quality indication} - H04L 1/0029: {Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling (power control H04W52/04)} - H04L 5/0016: {Time-frequency-code} - H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH} - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/006: {Quality of the received signal, e.g. BER, SNR, water filling} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04B 1/707: using direct sequence modulation - H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)} - H04L 1/1607: Details of the supervisory signal - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) - H04B: TRANSMISSION ## 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 ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 1) 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. ### Claim 4 (depends on 1) 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. ### Claim 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. ### Claim 6 (depends on 5) 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. ### Claim 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. ### Claim 8 (depends on 7) 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.