# US 2019/0246378 A1 · Systems and methods for scheduling wireless communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0246378 A1 - Document ID: US20190246378A1 - Status: Published application - Kind: A1 - Application number: 15/890,810 - Filed: 2018-02-07 - Published: 2019-08-08 - Earliest claimed: 2018-02-07 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: TOUFIQUL ISLAM; MOHAMMADHADI BALIGH; JIANGLEI MA; AMINE MAAREF; KELVIN KAR KIN AU - Web page: https://patentgrep.com/patent/US20190246378A1 ## CPC - H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)} - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04L 1/00: Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L7/00)} - H04L 1/0028: {Formatting} - H04L 1/1819: {with retransmission of additional or different redundancy} - H04L 1/1896: {ARQ related signaling} - H04W 72/12: Wireless traffic scheduling - H04L 1/0003: {by switching between different modulation schemes} - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract When a user equipment (UE) is wirelessly communicating with a network, the wireless channel conditions may sometimes result in a low signal-to-noise ratio (SNR). The low SNR may be a result of the UE having poor geometry, e.g. the UE is at a cell edge. It is desired to increase the reliability of wireless communications in low SNR conditions. In some embodiments, less information may be dynamically signaled in the downlink control information (DCI), thereby allowing for a possibly lower effective coding rate. ## Claims ### Claim 1 A method comprising: transmitting first higher layer signaling to a user equipment (UE), the first higher layer signaling indicating a transmission mode, wherein the transmission mode is associated with at least a downlink control information (DCI) type; the DCI type having a format that does not explicitly indicate at least one parameter associated with a transport block (TB) scheduled by the DCI type, wherein the at least one parameter comprises at least one of: time resources on which the TB is transmitted, frequency resources on which the TB is transmitted, a modulation and coding scheme (MCS) of the TB; a redundancy version (RV) of the TB; and a transport block size (TBS) of the TB; transmitting second higher layer signaling to the UE, the second higher layer signaling indicating to the UE the at least one parameter associated with the TB; and transmitting the DCI type to the UE to schedule the TB. ### Claim 2 (depends on 1) The method of claim 1, wherein the at least one parameter associated with the TB is for demodulating and/or decoding the TB. ### Claim 3 (depends on 1) The method of claim 1, wherein the DCI type is a first DCI type, and the transmission mode is further associated with a second DCI type, the second DCI type having a format that explicitly indicates the at least one parameter. ### Claim 4 (depends on 1) The method of claim 1, wherein the TB scheduled by the DCI type is a downlink data transmission, and the method further comprises transmitting the TB using the at least one parameter indicated in the second higher layer signaling. ### Claim 5 (depends on 1) The method of claim 1, wherein the TB scheduled by the DCI type is an uplink data transmission, and the method further comprises receiving the TB using the at least one parameter indicated in the second higher layer signaling. ### Claim 6 (depends on 1) The method of claim 1, wherein the transmission mode is a first transmission mode, the DCI type is a first DCI type, and wherein the format of the first DCI type further does not explicitly indicate at least one second parameter, the at least one second parameter comprising at least one of: a HARQ timing indicator, a physical uplink control channel (PUCCH) resource indicator, an acknowledgement/negative acknowledgement (ACK/NACK) channel resource index, a downlink assignment index, and a power control command for PUCCH; and wherein the at least one second parameter is explicitly indicated in a format of a second DCI type associated with a second transmission mode different from the first transmission mode. ### Claim 7 (depends on 1) The method of claim 1, wherein the DCI type comprises a field for indicating an index, the index associated with a corresponding preconfigured set of one or more parameters that includes the at least one parameter, and wherein the corresponding preconfigured set of one or more parameters is preconfigured using higher layer signaling. ### Claim 8 (depends on 7) The method of claim 7, wherein the second higher layer signaling includes a table associating the index with a value of each one of the corresponding preconfigured set of one or more parameters. ### Claim 9 A method comprising: receiving first higher layer signaling at a user equipment (UE), the first higher layer signaling indicating a transmission mode, wherein the transmission mode is associated with at least a downlink control information (DCI) type; the DCI type having a format that does not explicitly indicate at least one parameter associated with a transport block (TB) scheduled by the DCI type, wherein the at least one parameter comprises at least one of: time resources on which the TB is transmitted, frequency resources on which the TB is transmitted, a modulation and coding scheme (MCS) of the TB; a redundancy version (RV) of the TB; and a transport block size (TBS) of the TB; receiving second higher layer signaling at the UE, the second higher layer signaling indicating to the UE the at least one parameter associated with the TB; and receiving the DCI type at the UE. ### Claim 10 (depends on 9) The method of claim 9, wherein the DCI type is a first DCI type, and the transmission mode is further associated with a second DCI type, the second DCI type having a format that explicitly indicates the at least one parameter. ### Claim 11 (depends on 9) The method of claim 9, wherein the TB scheduled by the DCI type is a downlink data transmission, and the method further comprises receiving the TB, and demodulating and decoding the TB using the at least one parameter indicated in the second higher layer signaling. ### Claim 12 (depends on 9) The method of claim 9, wherein the TB scheduled by the DCI type is an uplink data transmission, and the method further comprises transmitting the TB using the at least one parameter indicated in the second higher layer signaling. ### Claim 13 (depends on 9) The method of claim 9, wherein the transmission mode is a first transmission mode, the DCI type is a first DCI type, and wherein the format of the first DCI type further does not explicitly indicate at least one second parameter, the at least one second parameter comprising at least one of: a HARQ timing indicator, a physical uplink control channel (PUCCH) resource indicator, an acknowledgement/negative acknowledgement (ACK/NACK) channel resource index, a downlink assignment index, and a power control command for PUCCH; and wherein the at least one second parameter is explicitly indicated in a format of a second DCI type associated with a second transmission mode different from the first transmission mode. ### Claim 14 (depends on 9) The method of claim 9, wherein the DCI type comprises a field for indicating an index, the index associated with a corresponding preconfigured set of one or more parameters that includes the at least one parameter, and wherein the corresponding preconfigured set of one or more parameters is preconfigured using higher layer signaling. ### Claim 15 (depends on 14) The method of claim 14, wherein the second higher layer signaling includes a table associating the index with a value of each one of the corresponding preconfigured set of one or more parameters. ### Claim 16 An apparatus comprising: a higher layer signaling generator to generate first higher layer signaling for a user equipment (UE), the first higher layer signaling indicating a transmission mode, wherein the transmission mode is associated with at least a downlink control information (DCI) type; the DCI type having a format that does not explicitly indicate at least one parameter associated with a transport block (TB) scheduled by the DCI type, wherein the at least one parameter comprises at least one of: time resources on which the TB is transmitted, frequency resources on which the TB is transmitted, a modulation and coding scheme (MCS) of the TB; a redundancy version (RV) of the TB; and a transport block size (TBS) of the TB; a transmitter to transmit the first higher layer signaling to the UE; the higher layer signaling generator to further generate second higher layer signaling for the UE, the second higher layer signaling indicating to the UE the at least one parameter associated with the TB; the transmitter to also transmit the second higher layer signaling to the UE; a DCI generator to generate the DCI type to schedule the TB; the transmitter to also transmit the DCI type to the UE. ### Claim 17 (depends on 16) The apparatus of claim 16, wherein the at least one parameter associated with the TB is for demodulating and/or decoding the TB. ### Claim 18 (depends on 16) The apparatus of claim 16, wherein the DCI type is a first DCI type, and the transmission mode is further associated with a second DCI type, the second DCI type having a format that explicitly indicates the at least one parameter. ### Claim 19 (depends on 16) The apparatus of claim 16, wherein the TB scheduled by the DCI type is a downlink data transmission, and the transmitter is further to transmit the TB using the at least one parameter indicated in the second higher layer signaling. ### Claim 20 (depends on 16) The apparatus of claim 16, wherein the TB scheduled by the DCI type is an uplink data transmission, and the apparatus further comprises a receiver to receive the TB using the at least one parameter indicated in the second higher layer signaling. ### Claim 21 (depends on 16) The apparatus of claim 16, wherein the transmission mode is a first transmission mode, the DCI type is a first DCI type, and wherein the format of the first DCI type further does not explicitly indicate at least one second parameter, the at least one second parameter comprising at least one of: a HARQ timing indicator, a physical uplink control channel (PUCCH) resource indicator, an acknowledgement/negative acknowledgement (ACK/NACK) channel resource index, a downlink assignment index, and a power control command for PUCCH; and wherein the at least one second parameter is explicitly indicated in a format of a second DCI type associated with a second transmission mode different from the first transmission mode. ### Claim 22 (depends on 16) The apparatus of claim 16, wherein the DCI type comprises a field for indicating an index, the index associated with a corresponding preconfigured set of one or more parameters that includes the at least one parameter, and wherein the corresponding preconfigured set of one or more parameters is preconfigured using higher layer signaling. ### Claim 23 (depends on 22) The apparatus of claim 22, wherein the second higher layer signaling includes a table associating the index with a value of each one of the corresponding preconfigured set of one or more parameters. ### Claim 24 A user equipment (UE) comprising: a receiver to: receive first higher layer signaling at a user equipment (UE), the first higher layer signaling indicating a transmission mode, wherein the transmission mode is associated with at least a downlink control information (DCI) type; the DCI type having a format that does not explicitly indicate at least one parameter associated with a transport block (TB) scheduled by the DCI type, wherein the at least one parameter comprises at least one of: time resources on which the TB is transmitted, frequency resources on which the TB is transmitted, a modulation and coding scheme (MCS) of the TB; a redundancy version (RV) of the TB; and a transport block size (TBS) of the TB; receive second higher layer signaling at the UE, the second higher layer signaling indicating to the UE the at least one parameter associated with the TB; and receive the DCI type at the UE; a downlink message processor to decode the DCI type. ### Claim 25 (depends on 24) The UE of claim 24, wherein the DCI type is a first DCI type, and the transmission mode is further associated with a second DCI type, the second DCI type having a format that explicitly indicates the at least one parameter. ### Claim 26 (depends on 24) The UE of claim 24, wherein the TB scheduled by the DCI type is a downlink data transmission, and wherein the receiver is configured to receive the TB, and the downlink message processor is configured to demodulate and decode the TB using the at least one parameter indicated in the second higher layer signaling. ### Claim 27 (depends on 24) The UE of claim 24, wherein the TB scheduled by the DCI type is an uplink data transmission, and the UE further comprises a transmitter to transmit the TB using the at least one parameter indicated in the second higher layer signaling. ### Claim 28 (depends on 24) The UE of claim 24, wherein the transmission mode is a first transmission mode, the DCI type is a first DCI type, and wherein the format of the first DCI type further does not explicitly indicate at least one second parameter, the at least one second parameter comprising at least one of: a HARQ timing indicator, a physical uplink control channel (PUCCH) resource indicator, an acknowledgement/negative acknowledgement (ACK/NACK) channel resource index, a downlink assignment index, and a power control command for PUCCH; and wherein the at least one second parameter is explicitly indicated in a format of a second DCI type associated with a second transmission mode different from the first transmission mode. ### Claim 29 (depends on 24) The UE of claim 24, wherein the DCI type comprises a field for indicating an index, the index associated with a corresponding preconfigured set of one or more parameters that includes the at least one parameter, and wherein the corresponding preconfigured set of one or more parameters is preconfigured using higher layer signaling. ### Claim 30 (depends on 29) The UE of claim 29, wherein the second higher layer signaling includes a table associating the index with a value of each one of the corresponding preconfigured set of one or more parameters.