10 results about "Raptor code" patented technology

The present application relates to the technical field of DNA storage. Provided are a method and apparatus for encryption and coding during DNA storage, and an electronic device and a storage medium. The method for encryption and coding comprises: acquiring data to be stored, and a first random number sequence and a second random number sequence which are generated by a hyperchaotic pseudo-random sequence generator; using the first random number sequence to encrypt the data to be stored, so as to obtain source data; performing DNA Raptor coding on the source data, and introducing the second random number sequence into a DNA Raptor coding process as a random number seed, so as to obtain at least one piece of coded data; and on the basis of a DNA base mapping rule, converting each piece of coded data into a corresponding DNA sequence, and generating a target DNA sequence from the DNA sequence corresponding to each piece of coded data. The present application solves the problem in the related art of data security being not taken into consideration during DNA storage.

Methods, systems, and devices for wireless communications are described. An encoding device (e.g., a network entity or user equipment (UE)) can communicate an indication of an encoding symbol identifier (ESI), a source block number (SBN), or both, to a decoding device in downlink control information (DCI). By way of example, the indication of the SBN and / or ESI can be transmitted using either an unused field or a repurposed field in the downlink control information (DCI) that schedules a transmission including the encoding symbols, or in a new DCI piggybacked on a downlink shared channel transmission including the encoding symbols. Additionally or alternatively, in a first option, the ESI can be explicitly indicated by the DCI. In another option, the network entity can indicate (e.g., via radio resource control messaging) a configuration for implicitly determining the ESI based on information conveyed in the DCI.

Methods, systems, and devices for wireless communication are described herein. An encoding device (e.g., a network entity or user equipment (UE)) may transmit an indication of a coded symbol identifier (ESI), a source block number (SBN), or both, with a decoding device in downlink control information (DCI). For example, the indication of SBN and / or ESI may be transmitted using an unused or re-used field in downlink control information (DCI) that schedules transmissions including encoded symbols or in a new DCI that carries on downlink shared channel transmissions including encoded symbols. Additionally or alternatively, in the first option, the ESI may be explicitly indicated by the DCI. In another option, the network entity may indicate (e.g., via radio resource control messaging) a configuration for implicitly determining the ESI based on information communicated in the DCI.

Methods, systems, and devices for wireless communications are described. An encoding device may encode a set of source symbols using one or more raptor codes to generate a first set of encoded symbols and may transmit the first set of encoded symbols to a decoding device. The decoding device may successfully recover a source symbol of the set of source symbols from the first set of encoded symbols and may transmit an indication of the source symbol to the encoding device. The encoding device may encode one or more source symbols of the set of source symbols using the one or more raptor codes to generate a second set of encoded symbols based on receiving the indication of the source symbol and may transmit the second set of encoded symbols to the decoding device.

The invention relates to a transmission and receiving method and a transmission and receiving device for underwater acoustic communication based on a raptor code, and belongs to the field of underwater acoustic communication. The transmission method comprises the following steps: dividing information source data to be sent in underwater acoustic communication into a plurality of source data blocks each comprising a preset number of source symbols; performing raptor code coding on the source symbols in the source data block to obtain raptor code coding symbols; performing packet header information filling on the raptor code coding symbols belonging to the same source data block according to the sequence of generation time to obtain a plurality of raptor code data packets belonging to each source data block; and sequentially carrying out OFDM (Orthogonal Frequency Division Multiplexing) modulation on the raptor code data packets of the source data block according to the sequence of generation time, and then sending the modulated raptor code data packets to an underwater acoustic The reliability of underwater acoustic communication can be improved.

In one aspect of the present disclosure, a method of wireless communication performed by a receiving device includes: receiving multiple encoded packets from a transmitting device, each including at least one corresponding physical (PHY) layer symbol. The method includes: decoding the multiple encoded packets based on a raptor code to generate received data. The method also includes: determining a signal to interference plus noise ratio (SINR) associated with receiving the multiple encoded packets, receiving an indication from the transmitting device, or determining a channel quality indicator (CQI) or modulation and coding scheme (MCS) associated with receiving the multiple encoded packets. The method also includes: adaptively determining a PHY packet error rate associated with the multiple encoded packets based on the SINR, indication, CQI, or MCS. Other aspects and features are also claimed and described.

The present invention discloses an uplink sliding window HARQ method based on Raptor code. In the 5G system, when there is no uplink space division multiplexing, one HARQ process schedules one transmission block, and each DCI feeds back the retransmission information of one transmission block, which has the disadvantages of low throughput and high number of signaling interactions. Based on the traditional HARQ method, the present invention proposes a sliding window HARQ method to configure multiple windows for one HARQ process to schedule transmission blocks. And a new DCI format is added, which can use one DCI to configure the retransmission information of transmission blocks in multiple windows. The present invention combines the Raptor code with the sliding window HARQ at the same time, and uses partial windows to transmit redundant transmission blocks. The receiving end only needs to correctly decode the transmission blocks of a certain number of windows to recover the transmission blocks of all windows. In this way, the throughput is improved, the number of signaling interactions is reduced, and the block error rate is also reduced.

In one aspect of the disclosure, a method of wireless communication performed by a receiving device includes receiving, from a transmitting device, a plurality of encoded packets each including at least one respective physical (PHY) layer symbol. The method includes decoding the plurality of encoded packets based on a raptor code to generate received data. The method also includes determining a signal-to-interference-plus-noise ratio (SINR) associated with receiving the plurality of encoded packets, receiving an indication from the transmitting device, or determining a channel quality indicator (CQI) or a modulation and coding scheme (MCS) associated with receiving the plurality of encoded packets. The method further includes adaptively determining a PHY packet error rate associated with the plurality of encoded packets based on the SINR, the indication, the CQI, or the MCS. Other aspects and features are also claimed and described.

Methods, systems, and devices for wireless communications are described. An encoding device (e. g., a network entity or user equipment (UE)) may communicate indications of encoded symbol identifiers (ESI), source block numbers (SBN), or both with a decoding device in a downlink control information (DCI). As examples, the indications of the SBN and / or ESIs may be transmitted using either an unused or repurposed field in the downlink control information (DCI) that schedules a transmission that includes the encoded symbols or in a new DCI that piggybacks on a downlink shared channel transmission that includes the encoded symbols. Additionally, or alternatively, in a first option, the ESI may be explicitly indicated by the DCI. In another option, the network entity may indicate a configuration (e. g., via radio resource control messaging) for implicitly determining the ESI based on information conveyed in the DCI.

Methods, systems, and devices for wireless communication are described. An encoding device (e.g., a base station or user equipment (UE)) may communicate an indication of a set of encoding symbol identifiers to a decoding device (e.g., a UE or base station) via a control channel. The encoding device may transmit a set of packets associated with a rateless code via a data channel, wherein each packet in the set of packets includes encoding symbols. The decoding device may decode the set of encoding symbols based on the set of encoding symbol identifiers.