元の名称記録: Panasonic Intellectual Property Corporation of America

Encoding device includes memory and a circuit accessible to the memory. In operation, the circuit: for each of faces forming a three-dimensional mesh, encodes a connection type regarding a connection relationship between the face to be processed and a face not yet processed, using arithmetic encoding based on a context; and in encoding a current connection type, selects the context to be applied to the arithmetic encoding from among contexts using a previous connection type. The current connection type is the connection type to be encoded. The previous connection type is the connection type encoded before the current connection type.

Disclosed is a communication apparatus that includes reception circuitry and control circuitry. The reception circuitry, in operation, receives a Physical Layer Convergence Procedure Protocol Data Unit, PPDU, which includes a signal field, a first data signal and a second data signal, the first data signal and the second data signal being generated from a common information bit, and the signal field including first information indicating at least one of a plurality of modes relating to assignment of the first data signal and the second data signal to a plurality of subcarrier groups. The control circuitry, in operation, processes the first data signal and the second data signal that has been assigned to the plurality of subcarrier groups, based on the first information.

A decoder includes circuitry and memory. Using the memory, the circuity, in a first operating mode, derives first motion vectors for a first block obtained by splitting a picture, using a first inter prediction scheme, and generates a prediction image corresponding to the first block, by referring to spatial gradients of luminance generated based on the first motion vectors. Using the memory, the circuitry, in a second operating mode, derives second motion vectors for a sub-block obtained by splitting a second block, using a second inter prediction scheme different from the first inter prediction scheme, the second block being obtained by splitting the picture, and generates a prediction image corresponding to the sub-block without referring to spatial gradients of luminance.

An encoder includes circuitry and memory coupled to the circuitry. In operation, the circuitry determines whether a determined relationship between a total number of one or more layer groups and a total number of one or more parameters is satisfied. The one or more layer groups each include at least one output layer, and the one or more parameters each indicate a performance requirement for a decoder. When the determined relationship is satisfied, the circuitry determines, using a determined method, a correspondence relationship for associating any of the one or more parameters with each of the one or more layer groups, and omits storing information indicating the correspondence relationship in a common header shared between layers in the one or more layer groups.

An encoder includes: circuitry; and memory, in which using the memory, the circuitry, in affine motion compensation prediction in inter prediction for a current block, places a limit on a range within which motion estimation or motion compensation is performed, and performs the motion compensation for the current block.

A three-dimensional data encoding method includes: obtaining second attribute information obtained by transforming first attribute information of a three-dimensional point in at least one frame among frames, the frames constituting a sequence; and encoding the second attribute information to generate a bitstream. The transforming is different from quantization, and the bitstream further includes: at least one first parameter provided for the sequence for the transforming; and at least one second parameter provided for each of the at least one frame for the transforming.

The present disclosure provides a communication apparatus and a communication method for coordination for cross-link interference handling, the communication apparatus being a base station comprising: circuitry which, in operation, is configured to generate a signal comprising information of a plurality of sets of slot formats for one or more serving cells, wherein each set of slot formats of the plurality of sets of slot formats corresponds to a plurality of frequency segments of each serving cell of the one or more serving cells; and a transmitter which, in operation, transmits the signal to one or more second base stations.

Provided are systems and methods for transmitting data over a wireless channel from a data transmitting node to a data receiving node in a communication system. The data transmitting node comprises second-layer processing circuitry for receiving at least one second-layer SDU, to be mapped onto a resource allocated for data transmission, and for generating a second-layer PDU, including the at least one second-layer SDU and at least one second-layer control element, and first-layer processing circuitry for receiving the second-layer PDU generated by the second-layer processing circuitry and for mapping the second-layer PDU onto the resource allocated for data transmission. The data receiving node comprises first-layer processing circuitry for de-mapping at least one second-layer PDU, and second layer processing circuitry for receiving and parsing the second-layer PDU demapped by the first-layer processing circuitry, the second-layer PDU including at least one second-layer SDU, and at least one second-layer control element.

In an uplink transmission without using a reference signal, this terminal includes a control circuit that determines at least one series or at least one combination from a plurality of series or a plurality of combinations of series depending on a value of information bit, and a transmission circuit that multiplexes and transmits information bits of different priorities to an uplink resource using the at least one series or at least one combination.