Abstract: This application provides a channel coding method and apparatus, including: A terminal device generates a first bit sequence, and determines a second bit sequence based on the first bit sequence, where the second bit sequence includes M bits, any bit in the last N bits in the second bit sequence has a same value as a bit that is in the first N bits in the first bit sequence and that is in one-to-one correspondence with the bit, M and N are positive integers, and M is greater than N; performs convolutional coding on the second bit sequence based on a convolutional encoder, to obtain a third bit sequence, where an initial value of a shift register of the convolutional encoder is equal to values of the last N bits in the second bit sequence, and the convolutional encoder includes N shift registers; and sends the third bit sequence.

Abstract: The present disclosure provides an intelligent reflection surface, a signal sending method and apparatus, and a storage medium, and belong to the field of wireless communication. In embodiments of this application, the intelligent reflection surface receives adjustment information sent by a first wireless device, and adjusts an on/off state of the intelligent reflection surface based on the adjustment information.

Abstract: A data transmission method and a communication apparatus. A first device may determine a second sequence, where the second sequence is obtained based on a base sequence and a first mask, and the first mask corresponds to a first encoding scheme. The first device sends the second sequence and a first sequence, where the first sequence includes a first encoded bit sequence obtained by encoding an information bit sequence based on the first encoding scheme, the first encoded bit sequence includes N bits, and N is a positive integer. The second device receives the second sequence and the first sequence from the first device and processes the received first encoded bit sequence by using a decoding scheme corresponding to the first encoding scheme. This manner is applicable to long-distance data transmission and may reduce missed detection and false detection of the first encoded bit sequence.

Abstract: This application provides resource allocation methods and apparatuses. In an implementation, a method includes: receiving, by a first apparatus from a second apparatus, a first index value in a first index value set that comprises a plurality of index values, each index value corresponds to a combination of values of a parameter in a parameter group that comprises a plurality of parameters, the first index value corresponds to a first frequency domain resource; and sending, by the first apparatus, uplink information on the first frequency domain resource.

Abstract: A communication method and device. The method includes: inventory indication information sent by a network device to a terminal device includes information for determining a target terminal device. The inventory indication information indicates that the network device selects the target terminal device to initiate a random access request, or the inventory indication information indicates that the network device supports the target terminal device in initiating a random access request. In this way, the network device may select, based on target terminal devices of different types, or target terminal devices having different capabilities, a target device to perform random access, thereby improving random access efficiency of a second device and performance of subsequent data transmission of the target terminal device.

Abstract: This application provides a signal transmission method and an apparatus, to reduce an envelope ripple of a transmission signal. The method includes: A base station obtains a first bit sequence and maps the first bit sequence to a first modulation symbol sequence, where a value of each modulation symbol in the first modulation symbol sequence belongs to a first constellation point set, the first constellation point set includes K modulation symbols, and each of the K modulation symbols has a different amplitude. The base station sequentially performs a DFT, weighting, and an IFFT on each modulation symbol in the first modulation symbol sequence to obtain a first signal. Based on the foregoing solution, an envelope ripple of the signal generated by the base station in time domain is small. This facilitates demodulation of the transmission signal by a terminal.

Abstract: A signal generation method is disclosed, to enhance an anti-interference capability and a coverage area of a signal. The method includes: A first device obtains a first signal based on transmission information through channel encoding, where the transmission information includes information that the first device needs to send to a second device; the first device generates a second signal based on the first signal through repetition or frequency spread transformation; the first device generates a third signal based on the second signal through linear encoding; and the first device generates a target signal based on the third signal through signal modulation, where the target signal is sent to the second device. Associated devices are also described.