Method and apparatus for multistream transmission
AssigneeSamsung Electronics Co., Ltd.
InventorsEko Onggosanusi, Md Saifur Rahman, Younsun Kim
Life of this patent
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Abstract
Multistream transmissions are provided for user equipment (UE) including a transceiver configured to receive an L-layer data transmission that includes at least one codeblock (CB). The CB includes a length-N cyclic redundancy code (CRC). The transceiver is also configured to receive a downlink control information (DCI) associated with the data transmission. The UE further includes a processor operably connected to the transceiver. The processor is configured to decode the data transmission, the CRC, and the DCI. The data transmission includes one codeword (CW) when L is less than or equal to a threshold and two CWs when L is greater than the threshold.
Claims21
A user equipment (UE), comprising:
- a transceiver configured to
- receive, from a base station, downlink control information (DCI) associated with downlink data, the DCI indicating a number of layers and including:
- one modulation and coding scheme (MCS) field, one new data indicator (NDI) field, and one redundancy version (RV) field when a number of codewords that are schedulable by the DCI is one, and
- two MCS fields, two NDI fields, and two RV fields when the number of codewords that are schedulable by the DCI is two, and
- receive, from the base station in the number of codewords determined based on the indicated number of layers, the downlink data through the number of layers, wherein the number of codewords is one when the number of layers is four or less and the number of codewords is two when the number of layers is greater than four;
- and
- a processor operably coupled to the transceiver, the processor configured to decode the DCI,
- wherein the downlink data includes one or more codeblocks (CBs), and
- wherein, in case that a number of the one or more CBs is greater than one, the downlink data includes a cyclic redundancy code (CRC) for each of the one or more CBs.
A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
- receiving, from a base station, downlink control information (DCI) associated with downlink data, the DCI indicating a number of layers and including:
- one modulation and coding scheme (MCS) field, one new data indicator (NDI) field, and one redundancy version (RV) field when a number of codewords that are schedulable by the DCI is one, and
- two MCS fields, two NDI fields, and two RV fields when the number of codewords that are schedulable by the DCI is two;
- and
- receiving, from the base station in the number of codewords determined based on the indicated number of layers, the downlink data through the number of layers, wherein the number of codewords is one when the number of layers is four or less and the number of codewords is two when the number of layers is greater than four, wherein the downlink data includes one or more codeblocks (CBs), and
- wherein, in case that a number of the one or more CBs is greater than one, the downlink data includes a cyclic redundancy code (CRC) for each of the one or more CBs.
A base station (BS), comprising:
- a transceiver configured to
- transmit, to a user equipment (UE), downlink control information (DCI) associated with downlink data, the DCI indicating a number of layers and including:
- one modulation and coding scheme (MCS) field, one new data indicator (NDI) field, and one redundancy version (RV) field when a number of codewords that are schedulable by the DCI is one, and
- two MCS fields, two NDI fields, and two RV fields when the number of codewords that are schedulable by the DCI is two, and
- transmit, to the UE in the number of codewords determined based on the indicated number of layers, the downlink data through the number of layers, wherein the number of codewords is one when the number of layers is four or less and the number of codewords is two when the number of layers is greater than four;
- and
- a processor operably coupled to the transceiver, the processor configured to encode the DCI,
- wherein the downlink data includes one or more codeblocks (CBs), and
- wherein, in case that a number of the one or more CBs is greater than one, the downlink data includes a cyclic redundancy code (CRC) for each of the one or more CBs.
Dependencies are inferred from the claim text.