Integrated circuit
AssigneeSun Patent Trust
InventorsMasayuki Hoshino, Seigo Nakao, Daichi Imamura
Life of this patent
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Abstract
A data alignment method capable of preventing degradation in demodulation performance due to variation in signal qualities when a data signal to which a Turbo code is applied is transmitted simultaneously from a plurality of cells. The method divides signal components to be used for data alignment into resources common to all the cells and resources dependent on the cells and transmits encoded and rate-matched data with the first half thereof aligned to the resources common to all the cells and the second half thereof aligned to the resources dependent on the cells.
Claims16
An integrated circuit to control a process, the process comprising:
- receiving control information related to a mapping of a physical downlink shared channel (PDSCH);
- and
- determining, based on the control information, the mapping of the PDSCH, in which the PDSCH is mapped on a resource in accordance with a number of antenna ports for a cell-specific reference signal and a MBMS single frequency network (MBSFN) sub-frame configuration, a first portion of the PDSCH being mapped on a first resource, on which a control signal or a cell-specific reference signal is not mapped in a first cell and a second cell that perform a coordinated multipoint communication, and a second portion of the PDSCH being mapped on a second resource, on which a control signal or a cell-specific reference signal is allowed to be mapped in at least one of the first cell and the second cell,
- wherein the PDSCH is divided into two portions, the first portion is a former portion of the two portions and include systematic bits, and the second portion is a latter portion of the two portions and includes parity bits, and a number of the systematic bits that are mapped to the first resource, on which the control signal or the cell-specific reference signal is not mapped in the first cell and the second cell, is greater than a number of the systematic bits that are mapped to the second resource, on which the control signal or the cell-specific reference signal is allowed to be mapped in at least one of the first cell and the second cell.
An integrated circuit comprising circuitry, which, in operation:
- controls reception of control information related to a mapping of a physical downlink shared channel (PDSCH);
- and
- determines, based on the control information, the mapping of the PDSCH, in which the PDSCH is mapped on a resource in accordance with a number of antenna ports for a cell-specific reference signal and a MBMS single frequency network (MBSFN) sub-frame configuration, a first portion of the PDSCH being mapped on a first resource, on which a control signal or a cell-specific reference signal is not mapped in a first cell and a second cell that perform a coordinated multipoint communication, and a second portion of the PDSCH being mapped on a second resource, on which a control signal or a cell-specific reference signal is allowed to be mapped in at least one of the first cell and the second cell,
- wherein the PDSCH is divided into two portions, the first portion is a former portion of the two portions and include systematic bits, and the second portion is a latter portion of the two portions and includes parity bits, and a number of the systematic bits that are mapped to the first resource, on which the control signal or the cell-specific reference signal is not mapped in the first cell and the second cell, is greater than a number of the systematic bits that are mapped to the second resource, on which the control signal or the cell-specific reference signal is allowed to be mapped in at least one of the first cell and the second cell.
Dependencies are inferred from the claim text.