# US 11,452,121 B2 · Apparatus and method for synchronous multiplexing and multiple access for different latency targets utilizing thin control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,452,121 B2 - Document ID: US11452121B2 - Status: Granted - Kind: B2 - Application number: 14/533,923 - Filed: 2014-11-05 - Published: 2015-11-19 - Granted: 2022-09-20 - Earliest claimed: 2014-05-19 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Tingfang Ji; John Edward Smee; Joseph Binamira Soriaga; Naga Bhushan; Peter Gaal; Alexei Yurievitch Gorokhov; Krishna Kiran Mukkavilli; Michael Alexander Howard; Rotem Cooper; Peter Ang - Web page: https://patentgrep.com/patent/US11452121B2 ## CPC - H04W 72/542: using measured or perceived quality - H04W 56/002: {Mutual synchronization} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 72/566: of the information or information source or recipient - H04W 72/20: Control channels or signalling for resource management - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Aspects of the disclosure provide for a thin control channel structure that can be utilized to enable multiplexing of two or more data transmission formats. For example, a thin control channel may carry information that enables ongoing transmissions utilizing a first, relatively long transmission time interval (TTI) to be punctured, and during the punctured portion of the long TTI, a transmission utilizing a second, relatively short TTI may be inserted. This puncturing is enabled by virtue of a thin channel structure wherein a control channel can carry scheduling information, grants, etc., informing receiving devices of the puncturing that is occurring or will occur. Furthermore, the thin control channel can be utilized to carry other control information, not being limited to puncturing information. Other aspects, embodiments, and features are also claimed and described. ## Claims ### Claim 1 A method of wireless communication, comprising: transmitting, within a first transmission time interval (TTI), a grant of time-frequency resources for first data within the first TTI; transmitting the first data on the downlink data channel during the first TTI; configuring control information to include a grant modification configured to modify the grant of time-frequency resources for the first data within the first TTI; and transmitting the control information on a downlink control channel during a second TTI shorter in duration than the first TTI and that overlaps a portion of the first TTI. ### Claim 2 (depends on 1) The method of claim 1, further comprising transmitting second data on the downlink data channel utilizing a TTI having the duration of the second TTI. ### Claim 3 (depends on 2) The method of claim 2, wherein the transmitting control information on the downlink control channel and the transmitting second data on the downlink data channel are performed at the same time. ### Claim 4 (depends on 2) The method of claim 2, further comprising orthogonally multiplexing the second data with the first data on the downlink data channel by puncturing the first data with the second data in accordance with the control information on the downlink control channel. ### Claim 5 (depends on 4) The method of claim 4, further comprising modifying the first data to account for lost downlink resources corresponding to the puncturing. ### Claim 6 (depends on 2) The method of claim 2, further comprising non-orthogonally multiplexing the second data with the first data on the downlink data channel by simultaneously transmitting the first data and the second data. ### Claim 7 (depends on 1) The method of claim 1, wherein the downlink data channel is separated in frequency from the downlink control channel. ### Claim 8 An apparatus configured for wireless communication, comprising: at least one processor; a computer-readable medium communicatively coupled to the at least one processor; and a transceiver communicatively coupled to the at least one processor, wherein the at least one processor is configured to: utilize the transceiver to transmit, within a first transmission time interval (TTI), a grant of time-frequency resources for first data within the first TTI; utilize the transceiver to transmit the first data on the downlink data channel during the first TTI; configure control information to include a grant modification configured to modify the grant of time-frequency resources for the first data within the first TTI; and utilize the transceiver to transmit the control information on a downlink control channel during a second TTI shorter in duration than the first TTI and that overlaps a portion of the first TTI. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the at least one processor is further configured to utilize the transceiver to transmit second data on the downlink data channel utilizing a TTI having the duration of the second TTI. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the at least one processor is further configured to utilize the transceiver to transmit control information on the downlink control channel and to transmit second data on the downlink data channel at the same time. ### Claim 11 (depends on 9) The apparatus of claim 9, wherein the at least one processor is further configured to orthogonally multiplex the second data with the first data on the downlink data channel by puncturing the first data with the second data in accordance with the control information on the downlink control channel. ### Claim 12 (depends on 11) The apparatus of claim 11, wherein the at least one processor is further configured to modify the first data to account for lost downlink resources corresponding to the puncturing. ### Claim 13 (depends on 9) The apparatus of claim 9, wherein the at least one processor is further configured to non-orthogonally multiplex the second data with the first data on the downlink data channel by utilizing the transceiver to simultaneously transmit the first data and the second data. ### Claim 14 (depends on 8) The apparatus of claim 8, wherein the downlink data channel is separated in frequency from the downlink control channel. ### Claim 15 An apparatus configured for wireless communication, comprising: means for transmitting, within a first transmission time interval (TTI), a grant of time-frequency resources for first data within the first TTI; means for transmitting the first data on the downlink data channel during the first TTI; means for configuring control information to include a grant modification configured to modify the grant of time-frequency resources for the first data within the first TTI; and means for transmitting the control information on a downlink control channel during a second TTI shorter in duration than the first TTI and that overlaps a portion of the first TTI. ### Claim 16 (depends on 15) The apparatus of claim 15, further comprising means for transmitting second data on the downlink data channel utilizing a TTI having the duration of the second TTI. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the means for transmitting control information on the downlink control channel and the means for transmitting second data on the downlink data channel are configured to transmit the control information and the second data at the same time. ### Claim 18 (depends on 16) The apparatus of claim 16, further comprising means for orthogonally multiplexing the second data with the first data on the downlink data channel by puncturing the first data with the second data in accordance with the control information on the downlink control channel. ### Claim 19 (depends on 18) The apparatus of claim 18, further comprising means for modifying the first data to account for lost downlink resources corresponding to the puncturing. ### Claim 20 (depends on 16) The apparatus of claim 16, further comprising means for non-orthogonally multiplexing the second data with the first data on the downlink data channel by simultaneously transmitting the first data and the second data. ### Claim 21 (depends on 15) The apparatus of claim 15, wherein the downlink data channel is separated in frequency from the downlink control channel. ### Claim 22 A non-transitory computer-readable medium comprising computer-executable code, comprising: instructions for causing a computer to transmit, within a first transmission time interval (TTI), a grant of time-frequency resources for first data within the first TTI; instructions for causing a computer to transmit the first data on the downlink data channel during the first TTI; instructions for causing a computer to configure control information to include a grant modification configured to modify the grant of time-frequency resources for the first data within the first TTI; and instructions for causing a computer to transmit the control information on a downlink control channel during a second TTI shorter in duration than the first TTI and that overlaps a portion of the first TTI. ### Claim 23 (depends on 22) The non-transitory computer-readable medium of claim 22, further comprising instructions for causing a computer to transmit second data on the downlink data channel utilizing a TTI having the duration of the second TTI. ### Claim 24 (depends on 23) The non-transitory computer-readable medium of claim 23, further comprising instructions for causing a computer to transmit control information on the downlink control channel and to transmit second data on the downlink data channel at the same time. ### Claim 25 (depends on 23) The non-transitory computer-readable medium of claim 23, further comprising instructions for causing a computer to orthogonally multiplex the second data with the first data on the downlink data channel by puncturing the first data with the second data in accordance with the control information on the downlink control channel. ### Claim 26 (depends on 25) The non-transitory computer-readable medium of claim 25, further comprising instructions for causing a computer to modify the first data to account for lost downlink resources corresponding to the puncturing. ### Claim 27 (depends on 23) The non-transitory computer-readable medium of claim 23, further comprising instructions for causing a computer to non-orthogonally multiplex the second data with the first data on the downlink data channel by utilizing the transceiver to simultaneously transmit the first data and the second data. ### Claim 28 (depends on 22) The non-transitory computer-readable medium of claim 22, wherein the downlink data channel is separated in frequency from the downlink control channel.