Indication of modulation and coding scheme for wireless device in coverage enhanced mode

A network node for indicating a modulation and coding scheme (MCS) for a wireless device operating in a coverage enhancement mode, wherein the wireless device operates with a first modulation and coding scheme using physical downlink shared channel repetitions and with a second modulation and coding scheme without using physical downlink shared channel repetitions, and wherein the second modulation and coding scheme is a higher order of modulation and coding than the first modulation and coding scheme, the network node comprising a transceiver, processing circuitry and a memory, wherein the processing circuitry is configured to:

• configure, when physical downlink shared channel repetitions are not used, the downlink control information to indicate one or more parameters related to the second modulation and coding scheme, the indication comprising at least a 4-bit modulation and coding scheme field of the first modulation and coding scheme and one or more downlink control information field bits which are used in relation to repetitions when repetitions of a physical downlink shared channel are used, and wherein a MCS index the wireless device should use for determining the modulation format and transport block size is given by adding 16 to the 4-bit value of the modulation and coding scheme field.

A method performed by a wireless device for determining a modulation and coding scheme (MCS) for a wireless device for operating in a coverage enhancement mode, wherein a first modulation and coding scheme uses physical downlink shared channel repetitions and a second modulation and coding scheme does not use physical downlink shared channel repetitions, and wherein the second modulation and coding scheme is a higher order of modulation and coding than the first modulation and coding scheme, the method comprising:

• receiving a downlink control information comprising an indication to one or more parameters related to the second modulation and coding scheme when physical downlink shared channel repetitions are not used, the indication comprising at least a 4-bit modulation and coding scheme field of the first modulation and coding scheme and one or more downlink control information field bits which are used in relation to repetitions when repetitions of a physical downlink shared channel are used, and wherein a MCS index the wireless device should use for determining the modulation format and transport block size is given by adding 16 to the 4-bit value of the modulation and coding scheme field.

A wireless device for determining a modulation and coding scheme (MCS) for operating in a coverage enhancement mode, wherein a first modulation and coding scheme uses physical downlink shared channel repetitions and a second modulation and coding scheme does not use physical downlink shared channel repetitions, and wherein the second modulation and coding scheme is a higher order of modulation and coding than the first modulation and coding scheme, the wireless device comprising a transceiver, processing circuitry and a memory, wherein the processing circuitry is configured to:

• receive a downlink control information comprising an indication to one or more parameters related to the second modulation and coding scheme when physical downlink shared channel repetitions are not used, the indication comprising at least a 4-bit modulation and coding scheme field of the first modulation and coding scheme and one or more downlink control information field bits which are used in relation to repetitions when repetitions of a physical downlink shared channel are used, and wherein a MCS index the wireless device should use for determining the modulation format and transport block size is given by adding 16 to the 4-bit value of the modulation and coding scheme field.