# US 2019/0173556 A1 · Data transmission method and apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0173556 A1 - Document ID: US20190173556A1 - Status: Published application - Kind: A1 - Application number: 16/265,837 - Filed: 2019-02-01 - Published: 2019-06-06 - Earliest claimed: 2016-08-12 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Yue ZHOU; Hejia LUO; Lu RONG; Rong LI - Web page: https://patentgrep.com/patent/US20190173556A1 ## CPC - H04B 7/0669: {using different channel coding between antennas (space-time coding H04L1/0618)} - H04J 13/0003: {Code application, i.e. aspects relating to how codes are applied to form multiplexed channels} - H04L 1/0042: {Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape (H04L1/0067 takes precedence)} - H04L 1/0047: {Decoding adapted to other signal detection operation (in conjunction with sequence estimation or equalization H04L25/03286)} - H04L 1/06: using space diversity - H04B: TRANSMISSION - 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) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract This application provides a data transmission method and an apparatus. The method includes: obtaining, by user equipment, to-be-sent user data; performing, by the user equipment, channel encoding on the to-be-sent user data to obtain N sets of encoded data; performing, by the user equipment, codebook mapping on each of the N sets of encoded data by using a codebook, to obtain N sets of codebook-mapped data, where different sets of encoded data use codebooks that occupy mutually different non-zero physical REs, the non-zero physical RE means a non-zero waveform obtained after mapped data is mapped to a physical RE, and N is a positive integer greater than or equal to 2; and sending, by the user equipment, the N sets of codebook-mapped data to a base station. ## Claims ### Claim 1 A data transmission method, comprising: obtaining, by user equipment, to-be-sent user data; performing, by the user equipment, channel encoding on the to-be-sent user data to obtain N sets of encoded data; performing, by the user equipment, codebook mapping on each of the N sets of encoded data by using a codebook, to obtain N sets of codebook-mapped data, wherein different sets of encoded data use codebooks that occupy mutually different non-zero physical resource element REs, and N is a positive integer greater than or equal to 2; and sending, by the user equipment, the N sets of codebook-mapped data to a base station. ### Claim 2 (depends on 1) The method according to claim 1, wherein the sending, by the user equipment, the N sets of codebook-mapped data to a base station comprises: allocating, by the user equipment, the N sets of codebook-mapped data to K antennas for transmission, wherein each of the N sets of codebook-mapped data is allocated to a different antenna, and K is a positive integer greater than or equal to N. ### Claim 3 (depends on 1) The method according to claim 1, wherein the codebook comprises a sparse code multiple access (SCMA) codebook, an interleave-grid multiple access (IGMA) codebook, or a pattern division multiple access (PDMA) codebook. ### Claim 4 (depends on 1) The method according to claim 1, wherein the performing, by the user equipment, channel encoding on the to-be-sent user data to obtain N sets of encoded data comprises: performing, by the user equipment, channel encoding on the to-be-sent user data by using M channel encoders, to obtain the N sets of encoded data, wherein M is a positive integer less than or equal to N. ### Claim 5 (depends on 4) The method according to claim 4, wherein M is equal to N, and the performing, by the user equipment, channel encoding on the to-be-sent user data by using M channel encoders, to obtain the N sets of encoded data comprises: performing channel encoding on the to-be-sent user data by using the M channel encoders in M encoding modes, to obtain N sets of different encoded data. ### Claim 6 (depends on 4) The method according to claim 4, wherein M is less than N, and the performing, by the user equipment, channel encoding on the to-be-sent user data by using M channel encoders, to obtain the N sets of encoded data comprises: encoding the to-be-sent user data by using the M channel encoders, with at least one channel encoder using a same encoding mode, and dividing data obtained by using the same encoding mode into at least two sets to obtain the N sets of encoded data. ### Claim 7 (depends on 1) The method according to claim 1, wherein before the obtaining, by user equipment, to-be-sent user data, the method further comprises: receiving, by the user equipment, a resource configuration message sent by the base station, wherein the resource configuration message comprises a codebook pair that occupies mutually different non-zero physical REs. ### Claim 8 (depends on 1) The method according to claim 1, wherein before the obtaining, by user equipment, to-be-sent user data, the method further comprises: sending, by the user equipment, a resource configuration message to the base station, wherein the resource configuration message comprises a codebook pair that occupies mutually different non-zero physical REs. ### Claim 9 A data transmission method, comprising: receiving, by a base station, N sets of codebook-mapped data sent by user equipment, wherein the N sets of codebook-mapped data are obtained after codebook mapping is performed on each of N sets of encoded data by using a codebook, different sets of encoded data use codebooks that occupy mutually different non-zero physical resource element REs, and N is a positive integer greater than or equal to 2; and demodulating and decoding, by the base station, the N sets of codebook-mapped data. ### Claim 10 (depends on 9) The method according to claim 9, wherein the demodulating and decoding, by the base station, the N sets of codebook-mapped data comprises: decoding each of the N sets of codebook-mapped data by using a decoder, to obtain N sets of codebook-based channel decoded data; determining whether any of the N sets of codebook-based channel decoded data passes check information check; and if a set of codebook-based channel decoded data passes the check information check, using the set of codebook-based channel decoded data that passes the check information check as a channel decoding result; or if none of the N sets of codebook-based channel decoded data passes the check information check, using any of the N sets of codebook-based channel decoded data as a channel decoding result. ### Claim 11 User equipment, comprising a receiver, a processor, and a transmitter, wherein the processor is separately connected to the receiver and the transmitter; the receiver is configured to obtain to-be-sent user data; the processor is configured to perform channel encoding on the to-be-sent user data to obtain N sets of encoded data, and perform codebook mapping on each of the N sets of encoded data by using a codebook, to obtain N sets of codebook-mapped data, wherein different sets of encoded data use codebooks that occupy mutually different non-zero physical resource element REs, and N is a positive integer greater than or equal to 2; and the transmitter is configured to send the N sets of codebook-mapped data to a base station. ### Claim 12 (depends on 11) The user equipment according to claim 11, wherein the transmitter is configured to: allocate the N sets of codebook-mapped data to K antennas for transmission, wherein each of the N sets of codebook-mapped data is allocated to a different antenna, and K is a positive integer greater than or equal to N. ### Claim 13 (depends on 11) The user equipment according to claim 11, wherein the codebook comprises a sparse code multiple access (SCMA) codebook, an interleave-grid multiple access (IGMA) codebook, or a pattern division multiple access (PDMA) codebook. ### Claim 14 (depends on 11) The user equipment according to claim 11, wherein the processor is configured to: perform channel encoding on the to-be-sent user data by using M channel encoders, to obtain the N sets of encoded data, wherein M is a positive integer less than or equal to N. ### Claim 15 (depends on 14) The user equipment according to claim 14, wherein M is equal to N, and the processor is configured to: perform channel encoding on the to-be-sent user data by using the M channel encoders in M encoding modes, to obtain N sets of different encoded data. ### Claim 16 (depends on 14) The user equipment according to claim 14, wherein M is less than N, and the processor is configured to: encode the to-be-sent user data by using the M channel encoders, with at least one channel encoder using a same encoding mode, and divide data obtained by using the same encoding mode into at least two sets to obtain the N sets of encoded data. ### Claim 17 (depends on 11) The user equipment according to claim 11, wherein the receiver is further configured to: receive a resource configuration message sent by the base station, wherein the resource configuration message comprises a codebook pair that occupies mutually different non-zero physical REs. ### Claim 18 (depends on 11) The user equipment according to claim 11, wherein the transmitter is further configured to: send a resource configuration message to the base station, wherein the resource configuration message comprises a codebook pair that occupies mutually different non-zero physical REs. ### Claim 19 A base station, comprising a receiver and a processor, wherein the receiver is connected to the processor; the receiver is configured to receive N sets of codebook-mapped data sent by user equipment, wherein the N sets of codebook-mapped data are obtained after codebook mapping is performed on each of N sets of encoded data by using a codebook, different sets of encoded data use codebooks that occupy mutually different non-zero physical resource element REs, and N is a positive integer greater than or equal to 2; and the processor is configured to demodulate and decode the N sets of codebook-mapped data. ### Claim 20 (depends on 19) The base station according to claim 19, wherein the processor is configured to: decode each of the N sets of codebook-mapped data by using a decoder, to obtain N sets of codebook-based channel decoded data; determine whether any of the N sets of codebook-based channel decoded data passes check information check; and if a set of codebook-based channel decoded data passes the check information check, use the set of codebook-based channel decoded data that passes the check information check as a channel decoding result; or if none of the N sets of codebook-based channel decoded data passes the check information check, use any of the N sets of codebook-based channel decoded data as a channel decoding result.