Panasonic Intellectual Property Corporation of America

Alexander Golitschek Edler Von Elbwar

Hidetoshi Suzuki

Lilei Wang

Ayako Horiuchi

Kazuki Takeda

An integrated circuit includes generation circuitry and transmission circuitry. The generation circuitry uses a reference size for a search space to generate downlink control information (DCI) in a first DCI format used for sidelink communications. The transmission circuitry transmits the DCI in the first DCI format mapped on the search space. When a second DCI format used for base station communications is mapped on the search space and the second DCI format is larger than the first DCI format, the reference size for the search space is based on the second DCI format. When a third DCI format used for sidelink communications is mapped on the search space and the third DCI format is larger than the first DCI format, and the second DCI format larger than the third DCI format is not mapped on the search space, the reference size is based on the third DCI format.

Base station, user equipment and wireless communication method

A communication apparatus includes a circuitry and a transmitter. In operation, the circuitry generates a Demodulation Reference Signal (DMRS) and generates downlink control information indicating a mapping pattern of the DMRS from a plurality of mapping patterns, and the transmitter transmits the DMRS and the downlink control information. The plurality of mapping patterns include a first mapping pattern and a second mapping pattern. Resource elements used for the DMRS of the second mapping pattern are same as a part of resource elements used for the DMRS of the first mapping pattern. A number of the resource elements used for the DMRS of the first mapping pattern is larger than a number of the resource elements used for the DMRS of the second mapping pattern.

Growing community of inventors

Hessen, Germany

Alexander Golitschek Edler Von Elbwar