A data transmission method and device are provided. The method comprises a non-access stratum of a terminal device obtains description information of data to be transmitted; the non-access stratum determines, according to a mapping relationship between preset data description information and reliability transmission indication information, and the description information of the data to be transmitted, the reliability transmission indication information corresponding to the data to be transmitted, the reliability transmission indication information being used for indicating whether to perform reliability transmission on the data to be transmitted; transmitting, by the NAS, the reliable transmission indication information corresponding to the data to be transmitted to an access stratum of the terminal device, and performing, by the terminal device, transmission of the data to be transmitted.

An OFDM signal transmission apparatus is provided, which includes a mapping unit configured to map first signals into N subcarriers and second signals into M subcarrier(s) to form an OFDM signal, wherein N is larger than M. The first signals are each indicating a same bit of retransmission information and the second signals are each indicating a same bit of information other than retransmission information. The OFDM signal transmission apparatus further includes a transmitting unit configured to transmit the formed OFDM signal.

An OFDM signal transmission apparatus is provided, which includes a mapping unit configured to map first signals into N subcarriers and second signals into M subcarrier(s) to form an OFDM signal, wherein N is larger than M. The first signals are each indicating a same bit of retransmission information and the second signals are each indicating a same bit of information other than retransmission information. The OFDM signal transmission apparatus further includes a transmitting unit configured to transmit the formed OFDM signal.

Wireless communications systems and methods related to cross Component Carrier (CC) transmission are provided that assist in minimizing PAPR. A first wireless communications device repeats data across multiple CCs in order to increase coverage while maintaining power levels within approved limits. In order to reduce PAPR, a number of different methods and mechanisms may be used. Rate matching may be performed across the multiple CCs as though a single virtual BWP. Alternatively, each copy of the data on its separate CC may be modified differently in some way, such as by using different scrambling IDs or different redundancy versions. Additionally, when utilizing DFT-s-OFDM modulation, an alternative method is provided which may lower PAPR. The DFT method includes performing a DFT on the combined data, tone mapping to each of the carriers, and performing an IFFT for each carrier individually. Each IFFT may be different than the other.

Methods for an electronic device to communicate in a wireless local area network are provided in which information bits are encoded at the electronic device to provide a plurality of encoded bits. A first radio of the electronic device is used to transmit a first subset of the encoded bits over a first channel that is within a first frequency band, where the first subset of the encoded bits comprises less than all of the encoded bits. A second radio of the electronic device is used to transmit a second subset of the encoded bits over a second channel that is within a second frequency band.

Methods for an electronic device to communicate in a wireless local area network are provided in which information bits are encoded at the electronic device to provide a plurality of encoded bits. A first radio of the electronic device is used to transmit a first subset of the encoded bits over a first channel that is within a first frequency band, where the first subset of the encoded bits comprises less than all of the encoded bits. A second radio of the electronic device is used to transmit a second subset of the encoded bits over a second channel that is within a second frequency band.

Methods, systems, and devices for wireless communication are described. A method may include identifying a reference number of tones for an overhead channel of a transport block and segmenting the transport block into a code block based at least in part on the reference number of tones for the overhead channel. In some examples, a code block indicator or the reference number of tones may be transmitted on a control channel. Another method may include receiving a code block size indicator associated with a code block of a transport block, decoding the code block based at least in part on the code block size indicator and assembling the transport block based at least in part on the decoded code block. In some examples, the code block size indicator may be received using a control channel.

Methods, systems, and devices for wireless communication are described. A method may include identifying a reference number of tones for an overhead channel of a transport block and segmenting the transport block into a code block based at least in part on the reference number of tones for the overhead channel. In some examples, a code block indicator or the reference number of tones may be transmitted on a control channel. Another method may include receiving a code block size indicator associated with a code block of a transport block, decoding the code block based at least in part on the code block size indicator and assembling the transport block based at least in part on the decoded code block. In some examples, the code block size indicator may be received using a control channel.

Methods, systems, and devices for wireless communications are described. Transport blocks may be scheduled using a single downlink control information (DCI) message. A wireless device may identify mapping pattern for mapping the transport blocks and repetitions of the transport blocks to communication resources. Mapping the transport blocks, or determining a mapping of the transport blocks, to communication resources may include partitioning the communication resources into subunits, where each subunit includes resources spread across each subband of a frequency hopping pattern and at least one instance of each of the scheduled transport blocks.

An information processing apparatus includes: a determiner that determines an area including a handwritten figure from image data; a recognizer that recognizes a handwritten character from the handwritten figure; an acquirer that acquires a file name; and a file generator that generates a file with a file name based on a handwritten character when the recognizer recognizes the handwritten character based on the image data and generates a file with the file name acquired by the acquirer when the recognizer does not recognize a handwritten character.