Abstract: Aspects of the disclosure provide a method for reducing physical downlink control channel (PDCCH) decoding complexity at a user equipment (UE) in a wireless communication network. The method can include receiving from a base station a candidate demodulation reference signal (DMRS) sequence that is carried in a subframe and associated with a PDCCH carried in the subframe, calculating a correlation-based quality metric indicating a correlation between the received candidate DMRS sequence and a local DMRS sequence, and performing a PDCCH decoding process to decode the PDCCH when the quality metric is greater than a threshold.

Abstract: Various solutions pertaining to mechanisms for feedback of multiple HARQ procedures in a same slot in mobile communications are described. An apparatus receives a plurality of downlink (DL) transmissions from a network node of a wireless network. The apparatus constructs a feedback containing a plurality of hybrid automatic repeat request (HARQ) acknowledgements (HARQ-ACKs) for the plurality of DL transmissions. The apparatus then performs an uplink (UL) transmission of the feedback to the network node in a slot comprising a plurality of sub-slots, with each of the plurality of HARQ-ACKs being in a respective one of the plurality of sub-slots in the slot.

Abstract: Various solutions for reducing power consumption with wake-up mechanism with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a configuration to monitor a wake-up indication (WUI) on predetermined occasions. The apparatus may monitor the WUI according to the configuration. The apparatus may determine whether the WUI is received. The apparatus may monitor a physical downlink control channel (PDCCH) in an event that the WUI is received.

Abstract: Various solutions for channel state information (CSI) reference resource acquisition in discontinuous reception (DRX) with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a DRX configuration. The apparatus may receive a CSI-measurement time configuration. The apparatus may turn on a transceiver to receiver a CSI-reference signal (CSI-RS) according to the CSI-measurement time configuration. The apparatus may perform a CSI reporting or beam management according to the CSI-RS. The CSI-RS may be located in an off duration of the DRX configuration.

Abstract: Techniques, schemes, designs, systems and methods pertaining to HARQ and ARQ design for URLLC in mobile communications are described. A processor of a first apparatus of a mobile network performs a first transmission to a second apparatus of the mobile network in support of ultra-reliablelow-latency communications (URLLC) with a first amount of redundancy. The processor determines whether a predefined condition is met. Responsive to a determination that the predefined condition is met, the processor performs a second transmission to the second apparatus in support of the URLLC with a second amount of redundancy greater than the first amount of redundancy. The processor also multiplexes URLLC traffic and enhanced Mobile Broadband (eMBB) traffic in transmissions to the second apparatus.

Abstract: Various solutions for frequency domain-resource allocation (FD-RA) when frequency hopping is enabled with respect to user equipment and network apparatus in mobile communications are described. An apparatus may determine whether frequency hopping is enabled. The apparatus may determine at least one of a first coarse step size corresponding to a start of an FD-RA and a second coarse step size corresponding to a length of the FD-RA in an event that the frequency hopping is enabled. The apparatus may determine allocated resources blocks (RBs) according to at least one of the first coarse step size and the second coarse step size. The apparatus may perform a transmission on the allocated RBs.

Abstract: Various solutions for frequency hopping design for grant-free transmission with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a frequency hopping pattern from a network node. The apparatus may determine a frequency hopping location according to the frequency hopping pattern. The apparatus may perform an uplink grant-free transmission according to the frequency hopping position. The frequency hopping pattern may comprise user equipment specific information.

Abstract: Various solutions for reporting hybrid automatic repeat request-acknowledgement (HARQ-ACK) information for ultra-reliable and low latency communications (URLLC) with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a downlink control information (DCI) format comprising a resource indication. The apparatus may choose a physical uplink control channel (PUCCH) resource from a plurality of PUCCH resources according to the resource indication. The apparatus may transmit HARQ-ACK information in the PUCCH resource. The resource indication may indicate timing information of the PUCCH resource by a unit of symbol.

Abstract: Various solutions for reporting hybrid automatic repeat request-acknowledgement (HARQ-ACK) information with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a first downlink control information (DCI) format indicating a first resource of physical uplink control channel (PUCCH) transmission. The apparatus may receive a second DCI format indicating a second resource of PUCCH transmission. The apparatus may determine that the receiving of the second DCI format is not earlier than a timing threshold from the first resource. The apparatus may cancel multiplexing of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information corresponding to the second DCI format in the PUCCH transmission.

Abstract: Various solutions for reducing uplink overhead with respect to user equipment and network apparatus in mobile communications are described. An apparatus may determine whether to multiplex hybrid automatic repeat request-acknowledgement (HARQ-ACK) information in a physical uplink shared channel (PUSCH) transmission. The apparatus may determine whether only a physical downlink shared channel (PDSCH) is received. The apparatus may generate only the HARQ-ACK information corresponding to the PDSCH in an event that only the PDSCH is received. The apparatus may transmit the HARQ-ACK information in the PUSCH transmission.

Abstract: Various solutions for downlink control information (DCI) format design with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a DCI format from a network node. The apparatus may retrieve an indicator from a fixed position of the DCI format. The apparatus may determine whether a supplementary uplink (SUL) is configured according to the indicator. The apparatus may perform a physical uplink shared channel (PUSCH) transmission according to a determination result.

Abstract: Various solutions for reducing uplink overhead with respect to user equipment and network apparatus in mobile communications are described. An apparatus may monitor a downlink channel. The apparatus may determining whether downlink control information (DCI) is received on the downlink channel. The apparatus may skip a hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback transmission on an uplink channel in an event that no DCI is received on the downlink channel.

Abstract: Various solutions for determining a modulation and coding scheme (MCS) table with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive an indication from a network node. The apparatus may determine an MCS table from a plurality of MCS tables for a high-reliability service according to the indication. The apparatus may use the MCS table in a channel for the high-reliability service.

Abstract: Various solutions for repetition and hybrid automatic repeat request (HARQ) process determination for grant-free transmission with respect to user equipment and network apparatus in mobile communications are described. An apparatus may determine a cyclic shifted version of a base sequence. The apparatus may generate a reference signal based on the cyclic shifted version of the base sequence. The apparatus may transmit a data repetition along with the reference signal on a semi-persistent scheduling (SPS) resource to a network node. The reference signal may be used to identify a repetition index of the data repetition.

Abstract: Various solutions for detecting poor channel conditions for grant-free transmission with respect to user equipment and network apparatus in mobile communications are described. An apparatus may perform a grant-free transmission to transmit at least one of repetitions to a network node. The apparatus may initiate a count value when performing the grant-free transmission. The apparatus may determine whether the count value reaches a threshold value. The apparatus may detect that a poor channel condition is satisfied when the count value reaches the threshold value. The apparatus may perform a channel recovery mechanism in response to the poor channel condition.

Abstract: Various solutions for transport block size (TBS) determination with respect to user equipment and network apparatus in mobile communications are described. An apparatus may determine an intermediate number of information bits. The apparatus may quantize the intermediate number of information bits. The apparatus may determine a TBS according to the quantized intermediate number of information bits. The apparatus may transmit the information bits according to the TBS.

Abstract: Various solutions for hybrid automatic repeat request (HARQ) feedback design for grant-free transmission with respect to user equipment and network apparatus in mobile communications are described. An apparatus may perform a grant-free transmission to transmit at least one of repetitions to a network node. The apparatus may receive a feedback from the network node. The apparatus may terminate the grant-free transmission after receiving the feedback. A part of the repetitions may not be transmitted after terminating the grant-free transmission.

Abstract: Various solutions for frequency hopping design for grant-free transmission with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a frequency hopping pattern from a network node. The apparatus may determine a frequency hopping location according to the frequency hopping pattern. The apparatus may perform an uplink grant-free transmission according to the frequency hopping position. The frequency hopping pattern may comprise user equipment specific information.

Abstract: Various solutions for uplink control channel design for high reliability transmission with respect to user equipment and network apparatus in mobile communications are described. An apparatus may receive a downlink signal from a network node. The apparatus may determine a first configuration to transmit an acknowledgement (ACK). The apparatus may determine a second configuration to transmit a negative acknowledgement (NACK). The apparatus may transmit the NACK to the network node in response to unsuccessful detection of the downlink signal. The second configuration may be different from the first configuration.

Abstract: Aspects of the disclosure provide a method for reducing physical downlink control channel (PDCCH) decoding complexity at a user equipment (UE) in a wireless communication network. The method can include receiving from a base station a candidate demodulation reference signal (DMRS) sequence that is carried in a subframe and associated with a PDCCH carried in the subframe, calculating a correlation-based quality metric indicating a correlation between the received candidate DMRS sequence and a local DMRS sequence, and performing a PDCCH decoding process to decode the PDCCH when the quality metric is greater than a threshold.