Systems, procedures, and instrumentalities are disclosed for transmissions with polar codes. A transmitting entity may determine a mother code length. The mother code length may be based on value(s), e.g., a maximum number of transmissions. The transmitting entity may determine a number of information bits to be polar encoded. The number of information bits may be larger than a number of payload bits. The transmitting entity may map the number of information bits to a number of bit channels of a polar code. The transmitting entity may polar encode the information bits in the bit channels using the determined mother code length. The transmitting entity may partition the polar encoded bits into a number of parts. The number of parts may be based on one or more values, e.g., the maximum number of transmissions. The transmitting entity may transmit bits that have been interleaved to a circular buffer.

In addition to the normal modulation states of 5G and 6G (BPSK, QPSK, 16QAM, etc.), the modulation scheme may include one or more zero-power states in which an amplitude is transmitted with very low or zero power. The receiver can detect the zero-power state and treat that state as an additional modulation state of the modulation scheme, thereby increasing the information content of each message element due to the additional number of modulation states available for encoding. Alternatively, the zero-power state or states may be used for special options, such as indicating a beginning or an ending of the message. Zero-power states may also be used to separate the message from an associated demodulation reference or to separate sequential messages. Substantial power may be saved since the zero-power states require very little (or no) transmitter power.

One coding method of a plurality of coding methods including at least a first coding method and a second coding method is selected, an information sequence is encoded by using the selected coding method, and an encoded sequence obtained by performing predetermined processing on the information sequence is modulated and transmitted. The first coding method is a coding method having a first coding rate, for generating a first encoded sequence by performing puncturing processing on a generated first codeword by using a first parity check matrix. The second coding method is a coding method having a second coding rate, for generating a second encoded sequence by performing puncturing processing on a generated second codeword by using a second parity check matrix that is different from the first parity check matrix, the second coding rate after the puncturing process being different from the first coding rate.

A decoding method and apparatus, a network device, and a storage medium are provided. The method includes: receiving data before de-interleaving and soft bit encoding locations; dividing the data before de-interleaving to obtain first data banks; acquiring punctured data, and obtaining second data banks according to the punctured data, wherein the data before de-interleaving and the punctured data are determined in encoded data according to the soft bit encoding locations; and performing decoding according to the soft bit encoding locations, the first data banks and the second data banks, so as to obtain decoded data.

Various aspects of the disclosure relate to retransmission techniques for communication of information (e.g., for wireless communication). In some aspects, if a device's first transmission including punctured encoded data fails, the device's second transmission (e.g., in response to a NAK) may involve transmitting the punctured bits. In some aspects, the coding rate used for encoding the data for the first transmission is selected to meet an error rate (e.g., a block error rate) for the second transmission. The second transmission may also include at least some of the encoded data. In some aspects, the puncturing may be performed according to a puncture pattern that is generated based on bit error probabilities of bit positions for encoded data.

Apparatuses, methods, and systems are disclosed for rate-matching a data transmission around resources. One method includes: receiving a downlink control channel (“DCC”) transmission in a predetermined time period; determining a first DCC candidate (“DCCC”) based on the downlink control channel transmission; determining whether the first DCCC belongs to a plurality of DCCCs associated with the DCC transmission, wherein the plurality of DCCCs carry the same downlink control information (“DCI”); in response to determining that the first DCCC belongs to the plurality of DCCCs: determining a second DCCC; and determining the DCI by decoding the first and the second DCCCs; in response to determining that the first DCCC does not belong to the plurality of DCCCs: determining the DCI by decoding the first DCCC; and determining downlink resources corresponding to a data transmission; and rate-matching the data transmission.

A wireless device may receive configuration parameters indicating a ratio threshold for selecting between rate matching and puncturing. The wireless device may receive a first downlink control information (DCI) scheduling an uplink transport block (TB) via uplink resources of the cell, and a second DCI indicating a transmission cancelation on one or more resources of the uplink resources. The wireless device may map the uplink TB to a portion of the uplink resources based on the rate matching in response to a ratio of the one or more resources to the uplink resources being equal to or greater than the ratio threshold, and the puncturing in response to the ratio being less than the ratio threshold. The wireless device may transmit the uplink TB via the portion of the uplink resources in response to the mapping.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify one or more sidelink positioning reference signal burst patterns identifying one or more bursts of sidelink positioning reference signals that are to be transmitted by either the UE or by other sidelink UEs. The UE may schedule transmission of a sidelink data message to occur during a same time period that includes the one or more bursts of sidelink positioning reference signals. The UE may transmit the sidelink data message via first resource elements that are different from second resource elements on which the one or more bursts of sidelink positioning reference signals are transmitted.

A low density parity check (LDPC) channel encoding method is used in a wireless communications system. A communication device encodes an input bit sequence by using an LDPC matrix, to obtain an encoded bit sequence for transmission. The LDPC matrix is obtained based on a lifting factor Z and a base matrix. The base matrix may be one of eight exemplary designs. The encoding method can be used in various communications systems including fifth generation (5G) telecommunication systems, and can support various encoding requirements for information bit sequences with different code lengths.

A first station (STA) and a second STA perform bandwidth negotiation with a bandwidth extension indication. Then the first STA and the second STA communicate wirelessly according to the bandwidth negotiation.