Systems, methods, and non-transitory processor-readable media for indicating repetition information for retransmissions
Systems, methods, non-transitory processor-readable media, and apparatuses for indicating repetition information for retransmissions, including receiving, by a wireless communication device from a network, control information, the control information including repetition information related to at least one repetition of a retransmission of an uplink transmission. The wireless communication device receives from the network the at least one repetition of the retransmission according to the repetition information.
1 . A method comprising:
determining, by a wireless communication device, a first list of modulation and coding scheme (MCS) indices, for transmission of a Msg3 retransmission scheduled by a downlink control information (DCI) format 0_0 with cyclic redundancy check (CRC) scrambled by a traffic control radio network temporary identifier (TC-RNTI);
determining, by the wireless communication device, a second list of MCS indices comprising a subset of the first list of MCS indices, for transmission of an initial Msg3 transmission scheduled by a random access response (RAR) uplink grant, wherein the Msg3 retransmission is a retransmission of the initial Msg3 transmission;
determining, by the wireless communication device, a first MCS index from the first list of MCS indices, according to a mapping relationship between values of three least significant bits (LSBs) of an MCS field in the DCI format 0_0 and the first list of MCS indices; and
determining, by the wireless communication device, a second MCS index from the second list of MCS indices, using two LSBs of an MCS field in the RAR uplink grant and the second list of MCS indices.
2 . The method of claim 1 , wherein the subset of the first list of MCS indices comprises least four MCS indices in the first list of MCS indices.
3 . The method of claim 1 , comprising:
determining, by the wireless communication device, a list of MCS indices configured by a network node, to be the first list of MCS indices.
4 . The method of claim 1 , comprising:
determining, by the wireless communication device, a default list of MCS indices to be the first list of MCS indices, when there is an absence of a list of MCS indices configured by a network node.
5 . The method of claim 4 , wherein the default list of MCS indices comprises {0, 1, 2, 3, 4, 5, 6, 7}.
6 . A wireless communication device, comprising:
at least one processor configured to:
determine a first list of modulation and coding scheme (MCS) indices, for transmission of a Msg3 retransmission scheduled by a downlink control information (DCI) format 0_0 with cyclic redundancy check (CRC) scrambled by a traffic control radio network temporary identifier (TC-RNTI);
determine a second list of MCS indices comprising a subset of-the first list of MCS indices, for transmission of an initial Msg3 transmission scheduled by a random access response (RAR) uplink grant, wherein the Msg3 retransmission is a retransmission of the initial Msg3 transmission;
determine a first MCS index from the first list of MCS indices, according to a mapping relationship between values of three least significant bits (LSBs) of an MCS field in the DCI format 0_0 and the first list of MCS indices; and
determine a second MCS index from the second list of MCS indices, using two LSBs of an MCS field in the RAR uplink grant and the second list of MCS indices.
7 . The wireless communication device of claim 6 , wherein the subset of the first list of MCS indices comprises least four MCS indices in the first list of MCS indices.
8 . The wireless communication device of claim 6 , wherein the at least one processor is configured to:
determine a list of MCS indices configured by a network node, to be the first list of MCS indices.
9 . The wireless communication device of claim 6 , wherein the at least one processor is configured to:
determine a default list of MCS indices to be the first list of MCS indices, when there is an absence of a list of MCS indices configured by a network node.
10 . The wireless communication device of claim 9 , wherein the default list of MCS indices comprises {0, 1, 2, 3, 4, 5, 6, 7}.
11 . A method comprising:
receiving, by a wireless network device, an initial Msg3 transmission on physical uplink shared channel (PUSCH) scheduled by a random access response (RAR) uplink grant, and the second PUSCH is transmitted according to a second list of modulation and coding scheme (MCS) indices, wherein a second MCS index of the second list of MCS indices is determined using two least significant bits (LSBs) of an MCS field in the RAR uplink grant; and
receiving, by the wireless network device, a Msg3 retransmission on the PUSCH scheduled by a downlink control information (DCI) format 0_0 with cyclic redundancy check (CRC) scrambled by a traffic control radio network temporary identifier (TC-RNTI), and the first PUSCH is transmitted according to a first list of at most eight MCS indices configured for the wireless communication device via radio resource control (RRC) signaling, wherein a first MCS index of the first list of MCS indices is determined using an MCS field in the DCI format 0_0 and according to a mapping relationship between values of three LSBs of the MCS field and the first list of MCS indices, wherein the second list of MCS indices comprises the first list of MCS indices, and the Msg3 retransmission is a retransmission of the initial Msg3 transmission.
12 . The method of claim 11 , wherein the subset of the first list of MCS indices comprises least four MCS indices in the first list of MCS indices.
13 . A wireless network device, comprising:
at least one processor configured to:
receive, via a receiver, an initial Msg3 transmission on a physical uplink shared channel (PUSCH) scheduled by a random access response (RAR) uplink grant, according to a second list of modulation and coding scheme (MCS) indices, wherein a second MCS index of the second list of MCS indices is determined using two least significant bits (LSBs) of an MCS field in the RAR uplink grant; and
receive, via the receiver, a Msg3 retransmission on the PUSCH scheduled by a downlink control information (DCI) format 0_0 with cyclic redundancy check (CRC) scrambled by a traffic control radio network temporary identifier (TC-RNTI), the Msg3 retransmission transmitted according to a first list of at most eight MCS indices configured for the wireless communication device via radio resource control (RRC) signaling, wherein a first MCS index of the first list of MCS indices is determined using an MCS field in the DCI format 0_0 and according to a mapping relationship between values of three LSBs of the MCS field and the first list of MCS indices, wherein the second list of MCS indices comprises a subset of the first list of MCS indices, and the Msg3 retransmission is a retransmission of the initial Msg3 transmission.
14 . The wireless network device of claim 13 , wherein the subset of the first list of MCS indices comprises least four MCS indices in the first list of MCS indices.