# US 2019/0245672 A1 · Sounding feedback utilizing shortened frame structures > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0245672 A1 - Document ID: US20190245672A1 - Status: Published application - Kind: A1 - Application number: 16/271,438 - Filed: 2019-02-08 - Published: 2019-08-08 - Earliest claimed: 2016-08-11 - Assignees: Fraunhofer-Gesellschaft zur Foerderung der angewandten Corschune e.V. - Applicants: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. - Inventors: Thomas FEHRENBACH; Baris GOEKTEPE; Thomas HAUSTEIN; Thomas WIRTH; Lars THIELE - Web page: https://patentgrep.com/patent/US20190245672A1 ## CPC - H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT} - H04B 7/0417: Feedback systems - H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]} - H04L 5/0035: {Resource allocation in a cooperative multipoint environment} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0062: {Avoidance of ingress interference, e.g. ham radio channels} - H04L 5/0082: {at predetermined intervals} - H04L 5/0094: {Indication of how sub-channels of the path are allocated} - H04L 25/0226: {sounding signals per se} - H04L 27/2628: {Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators (H04L27/2634 takes precedence)} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - 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 5/0073: {Allocation arrangements that take into account other cell interferences} - H04L 5/0085: {when channel conditions change} - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04B: TRANSMISSION - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Embodiments provide a transceiver, wherein the transceiver is configured to transmit or receive data in at least one transmission time interval on certain allocated resource elements of a wireless communication system, wherein the transceiver is configured to at least partially blank a transmission time interval for a data block to be transmitted or received by the transmitter, wherein the transceiver is configured (a) to signal to another transceiver a transmission grant in a blanked part of the at least partially blanked transmission time interval or (b) to at least partially blank the transmission time interval based on a blanking pattern received from another transceiver. ## Claims ### Claim 1 A transceiver, wherein the transceiver is configured to transmit or receive data in at least one transmission time interval on certain allocated resource elements of a wireless communication system; wherein the transceiver is configured to at least partially blank a transmission time interval for a data block to be transmitted or received by the transceiver; wherein the transceiver is configured to signal to another transceiver a transmission grant in a blanked part of the at least partially blanked transmission time interval, or to at least partially blank the transmission time interval based on a blanking pattern received from another transceiver. ### Claim 2 (depends on 1) The transceiver of claim 1, configured to transmit or receive data using a data signal, the data signal comprising a plurality of frames, each frame comprising a plurality of subframes, and each subframe comprising a number of symbols in the time domain and a number of sub-carriers in the frequency domain, wherein the transmission time interval is defined by a predefined number of symbols in the time domain. ### Claim 3 (depends on 2) The transceiver of claim 2, wherein the transmission time interval is shorter than one subframe. ### Claim 4 (depends on 1) The transceiver of claim 1, configured to at least partially blank the transmission time interval by blanking at least a subset of symbols in the time domain of the transmission time interval. ### Claim 5 (depends on 1) The transceiver of claim 1, configured to at least partially blank the transmission time interval by blanking at least a subset of sub-carriers in the frequency domain of the transmission time interval. ### Claim 6 (depends on 1) The transceiver of claim 1, configured to at least partially blank the transmission time interval by blanking at least a subset of resource elements of the transmission time interval in at least one out of time domain and frequency domain. ### Claim 7 (depends on 1) The transceiver of claim 1, configured to signal to another transceiver a transmission grant for transmitting a reference signal in a blanked part of the at least partially blanked transmission time interval. ### Claim 8 (depends on 7) The transceiver of claim 7, configured to use a downlink control channel to signal the transmission grant. ### Claim 9 (depends on 1) The transceiver of claim 1, configured to blank at least one out of demodulation reference symbols and data symbols in the at least partially blanked transmission time interval. ### Claim 10 (depends on 7) The transceiver of claim 7, configured to blank all symbols of the transmission time interval. ### Claim 11 (depends on 1) The transceiver of claim 1, configured to only transmit at least one out of reference symbols and demodulation reference symbols in the at least partially blanked transmission time interval. ### Claim 12 (depends on 11) The transceiver of claim 11, configured to not transmit at least one out of data symbols and control symbols in the at least partially blanked transmission time interval. ### Claim 13 (depends on 1) The transceiver of claim 1, configured to partially blank parts of the transmission time interval in at least one part out of time domain and frequency domain. ### Claim 14 (depends on 1) The transceiver of claim 1, configured to use a blanked part of the at least partially blanked transmission time interval for transmitting or receiving a reference signal. ### Claim 15 (depends on 14) The transceiver of claim 14, configured to at least partially blank a transmission time interval for a data block to be transmitted by the transceiver in a downlink band or during downlink time interval of the wireless communication system; wherein the transceiver is configured to use a blanked part of the at least partially blanked transmission time interval for receiving a reference signal from the other transceiver in the downlink band or during the downlink time interval of the wireless communication system. ### Claim 16 (depends on 14) The transceiver of claim 14, configured to blank at least one out of a data channel and a control channel in the transmission time interval; wherein the transceiver is configured to use the blanked channel of the transmission time interval to receive the reference signal from the other transceiver. ### Claim 17 (depends on 14) The transceiver of claim 14, configured to at least partially blank a downlink transmission time interval; wherein the transceiver is configured to use a blanked part of the at least partially blanked downlink transmission time interval for receiving an uplink reference signal from the other transceiver in the downlink transmission time interval in the downlink frequency band. ### Claim 18 (depends on 17) The transceiver of claim 17, configured to use channel reciprocity to estimate properties of the communication channel from the other transceiver to the transceiver based on the received uplink reference signal; wherein the transceiver is configured to precode data to be transmitted to the other transceiver in a subsequent transmission time interval based on the estimated properties of the communication channel from the other transceiver to the transceiver. ### Claim 19 (depends on 17) The transceiver of claim 17, configured to signal to the other transceiver the parts of the at least partially blanked downlink transmission time interval to be used by the other transceiver to transmit the uplink reference signal. ### Claim 20 (depends on 17) The transceiver of claim 17, configured to use a blanked part of the at least partially blanked downlink transmission time interval for receiving at least two uplink reference signals from at least two other transceivers in the downlink transmission time interval in the downlink frequency band; wherein at least two uplink reference signals are orthogonal to each other. ### Claim 21 (depends on 14) The transceiver of claim 14, configured to signal to another transceiver of another cell of the communication system a transmission grant in a blanked part of the at least partially blanked transmission time interval, or to signal to another transceiver of another cell of the communication system a blanking pattern used for at least partially blanking the transmission time interval. ### Claim 22 (depends on 1) The transceiver of claim 1, configured to use a blanked part of the at least partially blanked transmission time interval for transmitting or receiving a control information. ### Claim 23 (depends on 22) The transceiver of claim 22, wherein the control information is a MIMO feedback information. ### Claim 24 (depends on 1) The transceiver of claim 1, wherein the transceiver is a base station in the wireless communication system, and the data signal is an IFFT based signal, the IFFT based signal comprising a plurality of frames, the frame comprising a plurality of sub-frames. ### Claim 25 (depends on 1) The transceiver of claim 1, wherein the transceiver is configured to receive the blanking pattern from an interference optimization terminal, the blanking pattern indicating to blank a resource element based on the transmission time interval. ### Claim 26 A transceiver, wherein the transceiver is configured to transmit or receive data in at least one transmission time interval on certain allocated resource elements of a wireless communication system; wherein the transceiver is configured to transmit a reference signal in a blanked part of a at least partially blanked transmission time interval for a data block to be received by the transceiver. ### Claim 27 (depends on 26) The transceiver of claim 26, configured to transmit or receive data using a data signal, the data signal comprising a plurality of frames, each frame comprising a plurality of subframes, and each subframe comprising a number of symbols in the time domain and a number of sub-carriers in the frequency domain, wherein the transmission time interval is defined by a predefined number of symbols in the time domain. ### Claim 28 (depends on 27) The transceiver of claim 27, wherein the transmission time interval is shorter than one subframe. ### Claim 29 (depends on 26) The transceiver of claim 26, wherein the transceiver is configured to transmit the reference signal to another transceiver in a blanked part of the at least partially blanked transmission time interval based on a transmission grant signaled by the other transceiver, the transmission grant indicating the blanked part of the at least partially blanked transmission interval to be used for transmitting the reference signal. ### Claim 30 (depends on 26) The transceiver of claim 26, wherein at least a subset of symbols of the at least partially blanked transmission time interval are blanked in the time domain. ### Claim 31 (depends on 26) The transceiver of claim 26, wherein at least a subset of sub-carriers in the frequency domain of the transmission time interval are blanked. ### Claim 32 (depends on 26) The transceiver of claim 26, wherein at least a subset of resource elements of the transmission time interval is blanked in at least one out of time domain and frequency domain. ### Claim 33 (depends on 26) The transceiver of claim 26, wherein a transmission time interval for a data block to be received by the transceiver in a downlink band or downlink time interval of the wireless communication system is at least partially blanked; wherein the transceiver is configured to use a blanked part of the at least partially blanked transmission time interval for transmitting the reference signal. ### Claim 34 (depends on 33) The transceiver of claim 33, wherein at least one out of a data channel and a control channel of the transmission time interval are blanked; wherein the transceiver is configured to use the blanked channel of the transmission time interval to transmit the reference signal. ### Claim 35 (depends on 26) The transceiver of claim 26, wherein a downlink transmission time interval is at least partially blanked; wherein the transceiver is configured to use a blanked part of the at least partially blanked downlink transmission time interval for transmitting an uplink reference signal to another transceiver in the downlink transmission time interval in the downlink frequency band or downlink time interval. ### Claim 36 (depends on 26) The transceiver of claim 26, configured to receive a signal information indicating the parts of the downlink transmission time interval to be used by the transceiver to transmit the uplink reference signal. ### Claim 37 (depends on 26) The transceiver of claim 26, configured to use a blanked part of the at least partially blanked transmission time interval for transmitting or receiving a control information. ### Claim 38 (depends on 37) The transceiver of claim 37, wherein the control information is a MIMO feedback information. ### Claim 39 (depends on 26) The transceiver of claim 26, wherein the transceiver is a mobile terminal in the wireless communication system, and the data signal is an IFFT based signal, the IFFT based signal comprising a plurality of frames, the frame comprising a plurality of sub-frames. ### Claim 40 (depends on 1, 26) Wireless communication system, comprising a transceiver of a first type according to claim 1; and a transceiver of a second type according to claim 26. ### Claim 41 A method for transmitting, comprising: transmitting or receiving data in at least one transmission time interval on certain allocated resource elements of a wireless communication system; at least partially blanking a transmission time interval for a data block to be transmitted or received; and signaling to another transceiver a transmission grant in a blanked part of the at least partially blanked transmission time interval; or at least partially blanking the transmission time interval based on a blanking pattern received from another transceiver. ### Claim 42 A method for receiving, comprising: transmitting or receiving data in at least one transmission time interval on certain allocated resource elements of a wireless communication system; transmitting a reference signal in a blanked part of a at least partially blanked transmission time interval for a data block to be received. ### Claim 43 A non-transitory digital storage medium having a computer program stored thereon to perform the method for transmitting, comprising: transmitting or receiving data in at least one transmission time interval on certain allocated resource elements of a wireless communication system; at least partially blanking a transmission time interval for a data block to be transmitted or received; and signaling to another transceiver a transmission grant in a blanked part of the at least partially blanked transmission time interval; or at least partially blanking the transmission time interval based on a blanking pattern received from another transceiver, when said computer program is run by a computer. ### Claim 44 A non-transitory digital storage medium having a computer program stored thereon to perform the method for receiving, comprising: transmitting or receiving data in at least one transmission time interval on certain allocated resource elements of a wireless communication system; transmitting a reference signal in a blanked part of a at least partially blanked transmission time interval for a data block to be received, when said computer program is run by a computer.