# US 2019/0174335 A1 · HARQ Frame Data Structure and Method of Transmitting and Receiving with HARQ in Systems Using Blind Detection > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174335 A1 - Document ID: US20190174335A1 - Status: Published application - Kind: A1 - Application number: 16/273,535 - Filed: 2019-02-12 - Published: 2019-06-06 - Earliest claimed: 2014-02-18 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Petar Djukic; Hosein Nikopour - Web page: https://patentgrep.com/patent/US20190174335A1 ## CPC - H04W 24/02: Arrangements for optimising operational condition - H04L 1/0038: {Blind format detection (for detection of modulation format H04L27/0012)} - H04L 1/0041: {Arrangements at the transmitter end} - H04L 1/0061: {Error detection codes} - H04L 1/007: {Unequal error protection (for format H04L1/0078; for codes per se H03M13/35)} - H04L 1/0072: {Error control for data other than payload data, e.g. control data} - H04L 1/008: {where the control data relates to payload of a different packet} - H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)} - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 1/1845: {Combining techniques, e.g. code combining} - H04L 1/188: {Time-out mechanisms} - H04L 1/1896: {ARQ related signaling} - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04W 88/02: Terminal devices - H04W 88/08: Access point devices - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A HARQ frame data structure and methods of transmitting and receiving with HARQ in systems using blind detection. In one embodiment, a method of transmitting over a channel using HARQ includes transmitting a first frame containing data toward a blind detection receiver, and transmitting a second frame containing at least a portion of the data and information about the first frame toward the blind detection receiver. ## Claims ### Claim 1 A method for wireless communication, comprising: transmitting a first frame containing first data to a receiver; and transmitting a second frame, the second frame containing at least a portion of the first data, the transmitting of the second frame being caused by receipt of a negative acknowledgement for the first frame before a timer expires. ### Claim 2 (depends on 1) The method of claim 1, further comprising: starting the timer upon transmission of the first frame. ### Claim 3 (depends on 1) The method of claim 1, wherein the first frame has a first modulation and coding, and a header of the second frame has a second modulation and coding different from the first modulation and coding. ### Claim 4 (depends on 3) The method of claim 3, wherein a data field of the second frame has a third modulation and coding different from the second modulation and coding. ### Claim 5 (depends on 1) The method of claim 1, wherein the second frame includes information that identifies the first frame. ### Claim 6 (depends on 5) The method of claim 5, wherein the information that identifies the first frame includes an identifier of a pilot sequence included in the first frame. ### Claim 7 (depends on 1) The method of claim 1, wherein the second frame includes a cyclic redundancy check (CRC). ### Claim 8 (depends on 7) The method of claim 7, wherein the CRC includes a single CRC for a header and a data portion of the second frame. ### Claim 9 (depends on 7) The method of claim 7, wherein the CRC includes a first CRC for a header of the second frame and a second CRC for a data portion of the second frame. ### Claim 10 A wireless device comprising: a transmitter; and a processor configured to: transmit a first frame containing first data to a receiver; and transmit a second frame, the second frame containing at least a portion of the first data, the transmitting of the second frame being caused by receipt of a negative acknowledgement for the first frame before a timer expires. ### Claim 11 (depends on 10) The wireless device of claim 10, the processor further configured to: start the timer upon transmission of the first frame. ### Claim 12 (depends on 10) The wireless device of claim 10, wherein the first frame has a first modulation and coding, and a header of the second frame has a second modulation and coding different from the first modulation and coding. ### Claim 13 (depends on 12) The wireless device of claim 12, wherein a data field of the second frame has a third modulation and coding different from the second modulation and coding. ### Claim 14 (depends on 10) The wireless device of claim 10, wherein the second frame includes information that identifies the first frame. ### Claim 15 (depends on 14) The wireless device of claim 14, wherein the information that identifies the first frame includes an identifier of a pilot sequence included in the first frame. ### Claim 16 (depends on 10) The wireless device of claim 10, wherein the second frame includes a cyclic redundancy check (CRC). ### Claim 17 (depends on 16) The wireless device of claim 16, wherein the CRC includes a single CRC for a header and a data portion of the second frame. ### Claim 18 (depends on 16) The wireless device of claim 16, wherein the CRC includes a first CRC for a header of the second frame and a second CRC for a data portion of the second frame. ### Claim 19 A non-transitory computer-readable medium having instructions stored thereon that, when executed by a wireless device, cause the wireless device to perform operations, the operations comprising: transmitting a first frame containing first data to a receiver; and transmitting a second frame, the second frame containing at least a portion of the first data, the transmitting of the second frame being caused by receipt of a negative acknowledgement for the first frame before a timer expires. ### Claim 20 (depends on 19) The non-transitory computer-readable medium of claim 19, the operations further comprising: starting the timer upon transmission of the first frame.