Downlink control information receiving method and user equipment, and downlink control information transmitting method and base station
First Claim
1. A method for receiving a signal by a user equipment (UE), the method comprising:
- obtaining a coverage enhancement (CE) mode of the UE,wherein the CE mode is obtained as CE mode A based on that a physical random access channel (PRACH) CE level for the UE is a first CE level,wherein the CE mode is obtained as CE mode B based on that the PRACH CE level is a second CE level higher than the first CE level, andwherein based on that information on indicating the CE mode is received through a radio resource control signal, the CE mode is obtained as identical to the CE mode indicated by the information regardless of the PRACH CE level;
decoding downlink (DL) grant downlink control information (DCI); and
receiving a physical downlink shared channel (PDSCH) based on the DL grant DCI,wherein based on that;
the CE mode is CE mode A,the DL grant DCI is decoded based on a first DCI format, andthe CE mode is CE mode B,the DL grant DCI is decoded based on a second DCI format, andwherein the first DCI format and the second DCI format are different in at least a physical resource block (PRB) assignment field for DL reception, a hybrid automatic repeat request (HARQ) process number field, a transmit power control (TPC) command field for a physical uplink control channel (PUCCH), or a redundancy version (RV) field.
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Accused Products
Abstract
Provided is a method and apparatus for transmitting/receiving downlink control information (DCI). DCI is set to have different DCI formats according to a coverage enhancement (CE) mode of a user equipment. In the case of a DL grant, the DCI is set according to a first DCI format when the CE mode of the user equipment is CE Mode A, and the DCI is set according to a second DCI format when the CE mode of the user equipment is CE Mode B. In the case of a UL grant, the DCI is set according to a third DCI format when the CE mode of the user equipment is CE Mode A, and the DCI is set according to a fourth DCI format when the CE mode of the user equipment is CE Mode B.
17 Citations
16 Claims
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1. A method for receiving a signal by a user equipment (UE), the method comprising:
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obtaining a coverage enhancement (CE) mode of the UE, wherein the CE mode is obtained as CE mode A based on that a physical random access channel (PRACH) CE level for the UE is a first CE level, wherein the CE mode is obtained as CE mode B based on that the PRACH CE level is a second CE level higher than the first CE level, and wherein based on that information on indicating the CE mode is received through a radio resource control signal, the CE mode is obtained as identical to the CE mode indicated by the information regardless of the PRACH CE level; decoding downlink (DL) grant downlink control information (DCI); and receiving a physical downlink shared channel (PDSCH) based on the DL grant DCI, wherein based on that; the CE mode is CE mode A, the DL grant DCI is decoded based on a first DCI format, and the CE mode is CE mode B, the DL grant DCI is decoded based on a second DCI format, and wherein the first DCI format and the second DCI format are different in at least a physical resource block (PRB) assignment field for DL reception, a hybrid automatic repeat request (HARQ) process number field, a transmit power control (TPC) command field for a physical uplink control channel (PUCCH), or a redundancy version (RV) field. - View Dependent Claims (2, 3, 4, 5)
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6. A user equipment (UE) for receiving a signal, the UE comprising:
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a memory; and at least one processor coupled with the memory, wherein the at least one processor is configured to; obtain a coverage enhancement (CE) mode of the UE, wherein the CE mode is obtained as CE mode A based on that a physical random access channel (PRACH) CE level for the UE is a first CE level, wherein the CE mode is obtained as CE mode B based on that the PRACH CE level is a second CE level higher than the first CE level, and wherein based on that information on indicating the CE mode is received through a radio resource control signal, the CE mode is obtained as identical to the CE mode indicated by the information regardless of the PRACH CE level; decode downlink (DL) grant downlink control information (DCI); and receive a physical downlink shared channel (PDSCH) based on the DL grant DCI, wherein based on that; the CE mode is CE mode A, the DL grant DCI is decoded based on a first DCI format, and the CE mode is CE mode B, the DL grant DCI is decoded based on a second DCI format, and wherein the first DCI format and the second DCI format are different in at least a physical resource block (PRB) assignment field for DL reception, a hybrid automatic repeat request (HARQ) process number field, a transmit power control (TPC) command field for a physical uplink control channel (PUCCH), or a redundancy version (RV) field. - View Dependent Claims (7, 8, 9)
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10. A method of transmitting a signal to a user equipment (UE) by a base station (BS), the method comprising:
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obtaining a coverage enhancement (CE) mode of the UE, wherein the CE mode is obtained as CE mode A based on that a physical random access channel (PRACH) CE level for the UE is a first CE level, wherein the CE mode is obtained as CE mode B based on that the PRACH CE level is a second CE level higher than the first CE level, and wherein based on that information on indicating the CE mode is transmitted through a radio resource control signal, the CE mode is obtained as identical to the CE mode indicated by the information regardless of the PRACH CE level; transmitting, to the UE, downlink (DL) downlink control information (DCI); and transmitting, to the UE, a physical downlink shared channel (PDSCH) based on the DL grant DCI, wherein based on that; the CE mode is CE mode A, the DL grant DCI is transmitted based on a first DCI format, and the CE mode is CE mode B, the DL grant DCI is transmitted based on a second DCI format, and wherein the first DCI format and the second DCI format are different in at least a physical resource block (PRB) assignment field for DL reception, a hybrid automatic repeat request (HARQ) process number field, a transmit power control (TPC) command field for a physical uplink control channel (PUCCH), or a redundancy version (RV) field. - View Dependent Claims (11, 12, 13)
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14. A base station (BS) for transmitting a signal to a user equipment (UE), the BS comprising:
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a memory; and at least one processor coupled with the memory, wherein the at least one processor is configured to; obtain a coverage enhancement (CE) mode of the UE, wherein the CE mode is obtained as CE mode A based on that a physical random access channel (PRACH) CE level for the UE is a first CE level, wherein the CE mode is obtained as CE mode B based on that the PRACH CE level is a second CE level higher than the first CE level, and wherein based on that information on indicating the CE mode is transmitted through a radio resource control signal, the CE mode is obtained as identical to the CE mode indicated by the information regardless of the PRACH CE level; transmit, to the UE, downlink (DL) downlink control information (DCI); and transmit, to the UE, a physical downlink shared channel (PDSCH) based on the DL grant DCI, wherein based on that; the CE mode is CE mode A, the DL grant DCI is transmitted based on a first DCI format, and the CE mode is CE mode B, the DL grant DCI is transmitted based on a second DCI format, and wherein the first DCI format and the second DCI format are different in at least a physical resource block (PRB) assignment field for DL reception, a hybrid automatic repeat request (HARQ) process number field, a transmit power control (TPC) command field for a physical uplink control channel (PUCCH), or a redundancy version (RV) field. - View Dependent Claims (15, 16)
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Specification