US-12628158-B2 - Systems, methods, and non-transitory processor-readable media for indicating repetition information for retransmissions

US12628158B2US 12628158 B2US12628158 B2US 12628158B2US-12628158-B2

Abstract

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.

Inventors

Xing Liu
Xianghui Han
Peng Hao
Jing Shi

Assignees

ZTE CORPORATION

Dates

Publication Date: 20260512
Application Date: 20230831

Claims (14)

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.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of priority under 35 U.S.C. § 120 as a continuation of PCT Patent Application No. PCT/CN2021/142447, filed on Dec. 29, 2021, the disclosure of which is incorporated herein by reference in its entirety. TECHNICAL FIELD The disclosure relates generally to wireless communications and, more particularly, to systems, methods, and non-transitory processor-readable media for indicating repetition information for transmissions. BACKGROUND Currently, the first phase standardization of the 5th Generation Mobile Communication Technology (5G) has already completed. A series features have been specified in the first three New Radio (NR) releases, i.e. Rel-15, Rel-16, and Rel-17. Coverage is one of the key factors in implementing cellular communication networks due to its direct impact on service quality as well as capital expenditure (CAPEX) and operational expenditure (OPEX). Despite the importance of coverage on the success of NR implementation, a thorough coverage evaluation and a comparison with legacy Radio Access Technologies (RATs) considering all NR specification details have not been performed until now. SUMMARY In some arrangements, systems, methods, apparatuses, and non-transitory computer-readable media for indicating repetition information for transmissions, including receiving, by a wireless communication device from a network, control information. The control information includes repetition information related to at least one repetition of a retransmission of an uplink transmission. In addition, the wireless communication device from the network, the at least one repetition of the retransmission according to the repetition information. In some arrangements, systems, methods, apparatuses, and non-transitory computer-readable media for indicating repetition information for transmissions, including sending, by a network to a wireless communication device, control information. The control information comprises repetition information related to at least one repetition of a retransmission of an uplink transmission. In addition, the network sends to the wireless communication device, the at least one repetition of the retransmission according to the repetition information. The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS Various example arrangements of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for purposes of illustration only and merely depict example arrangements of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered limiting of the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale. FIG. 1 is a diagram illustrating an example cellular communication network, in accordance with some arrangements. FIG. 2 illustrates block diagrams of an example base station and an example user equipment device, in accordance with some arrangements. FIG. 3 is a table illustrating information fields in a Random Access Response (RAR) uplink (UL) grant and size corresponding to each field, in accordance with some arrangements. FIG. 4 is a flowchart diagram illustrating an example method for indicating repetition information for retransmissions, in accordance with some arrangements. FIG. 5A is a diagram illustrating an example Modulation and Coding Scheme (MCS) field of a Downlink Control Information (DCI) format 0_0 used to indicate MCS indices and/or repetition numbers, in accordance with some arrangements. FIG. 5B is a diagram illustrating an example MCS field of a DCI format 0_0 used to indicate MCS indices and/or repetition numbers, in accordance with some arrangements. FIG. 6 is a diagram illustrating an example MCS field of a DCI format 0_0 used to indicate MCS indices and/or repetition numbers, in accordance with some arrangements. FIG. 7 is a table illustrating repetition numbers (first repetition number set) indicated by RAR UL grant for PUSCH scheduled by the RAR UL grant and the second repetition number set, in accordance with various arrangements. FIG. 8 is a table illustrating example values of 2 bits of a MCS field and values of repetition offset, in accordance with various arrangements. FIG. 9 is a table illustrating example mapping between the values of bits of a MCS field and MCS indices, in accordance with various arrangements. FIG. 10 is a table illustrating example mapping between the values of bits of a MCS field and MCS indices, in accordance with various arrangements. FIG. 11 is a table illustrating example mapping between the MCS indices indicated from the first MCS index list by RAR UL grant for PUSCH scheduled by RAR UL grant an