5 results about "Raptor code" patented technology

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.

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 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.