Abstract:
A base station and a user equipment are provided. The base station performs a multi-user non-orthogonal uplink multiplexing transmission configuration procedure to generate an uplink multiplexing transmission configuration message based on a radio resource utilization efficiency. The uplink multiplexing transmission configuration message carries a power domain uplink multiplexing transmission parameter and a non-orthogonal uplink multiplexing transmission parameter. The base station transmits the uplink multiplexing transmission configuration message to the user equipment to make the user equipment transmit an uplink data signal to the base station according to the uplink multiplexing transmission configuration message.
Abstract:
A base station (BS) and a user equipment (UE) for a mobile communication system are provided. The BS transmits first downlink control information (DCI) indicating a first uplink radio resource to a UE and transmits second DCI indicating a second uplink radio resource to another UE. The second uplink radio resource has an overlapping part with the first uplink radio resource. The BS further transmits third DCI to the UE in response to the overlapping part. The third DCI indicates transmission adjustment information.
Abstract:
A user equipment (UE) and a base station (BS) are provided. The UE transmits a specific preamble on a random access channel and transmits an uplink data signal and a demodulation reference signal (DMRS) on an uplink transmission radio resource so that the BS receives the uplink data signal and the DMRS according to the specific preamble after receiving the specific preamble. The BS transmits a downlink data signal on a downlink transmission radio resource according to the specific preamble so the UE receives the downlink data signal on the downlink transmission radio resource according to the specific preamble.
Abstract:
A user equipment supporting ultra-reliable low latency communication service, a user equipment supporting enhanced mobile broadband service, and a base station are provided. The user equipment supporting ultra-reliable low latency communication service stores a plurality of preambles including a dedicated preamble, and performs the following operations: selecting a transmission resource from a share resource pool configured for the user equipment and at least one other user equipment; transmitting the dedicated preamble in a preamble resource corresponding to the transmission resource to make the base station suspend an allocation and transmission procedure of the transmission resource for the at least one other user equipment; and transmitting an uplink data in the transmission resource to make the base station transmit a response message to the user equipment after receiving the uplink data.
Abstract:
A base station (BS), a user equipment (UE), a transmission control method for the BS and a data transmission method for the UE are provided. Based on user group information, the base station transmits uplink transmission control information to a plurality of the UEs in a group to make each UE contend for a plurality of subframes in the allocated unlicensed band radio resource pool. If a UE successfully contends for a subframe, the UE transmits a reservation signal and transmits an uplink data signal in the contended subframe. If the UE detects another reservation signal when contending for the subframe, the UE determines whether the another reservation signal is associated with the ID of its group. If associated, the UE transmits the uplink data signal in the subframe.
Abstract:
The invention relates to a user equipment of device-to-device communications and a resource selection method thereof. The user equipment includes a resource selection device and a transceiver device. The resource selection device is configured to create a state machine model, which includes an in-coverage state and an out-of-coverage state corresponding to a base station. The resource selection device is also configured to select a corresponding device-to-device communication resource in response to a current state of the user equipment during transferring of the user equipment from the in-coverage state to the out-of-coverage state or from the out-of-coverage state to the in-coverage state. The transceiver device is configured to perform a device-to-device communication with another user equipment according to the corresponding device-to-device communication resource. The resource selection method includes the steps corresponding to the operations of the user equipment.
Abstract:
A high-power base station and a low-power base station for use in a heterogeneous network system and transmission methods thereof are provided. Interference caused by the high-power base station in control channels of the heterogeneous network system are avoided effectively based on one of the following strategies: (1) transmitting control information of the low-power base station by the high-power base station in the same control channel; (2) transmitting control information of the low-power base station by the low-power base station attached with a user end in a specific control channel which is pre-defined by the low-power base station; and (3) transmitting control information of the low-power base station by the low-power base station in a specific control channel which is determined based on an offset allocated by the heterogeneous network system.
Abstract:
A user equipment (UE) and a base station (BS) are provided. The UE monitors a plurality of semi-persistent scheduling (SPS) physical downlink shared channel (PDSCH) resources, and determines an SPS Hybrid Automatic Repeat reQuest acknowledge (HARQ-ACK) bit order of a plurality of SPS HARQ-ACK bits, corresponding to the SPS PDSCH resources, in a codebook according to a time-domain position, a component carrier index and a configuration index of each SPS PDSCH resource. Afterwards, the UE generates an HARQ-ACK message including the codebook according to the SPS HARQ-ACK bit order, and transmits the HARQ-ACK message on a physical uplink control channel (PUCCH) resource to the BS.
Abstract:
A base station (BS) for a mobile communication system is provided. As for a user equipment (UE), the BS is a primary BS and connects to a secondary BS. The primary BS calculates the time synchronization error between the primary BS and the UE, and the time synchronization error between the secondary BS and the UE. These time synchronization errors are associated with the subcarrier spacings (SCSs) of the primary and secondary BSs, respectively. According to the calculated time synchronization errors, the primary BS transmits a synchronization indication message to instruct the UE to receive the reference time information of one of the primary and secondary BSs.
Abstract:
A user equipment (UE) and a base station (BS) for a mobile communication system are provided. The UE divides a plurality of uplink radio resources into at least one group and determines whether there exist pieces of uplink information corresponding to the uplink radio resources. When the corresponding pieces of the uplink information exist, the UE determines whether there exist overlapped periods in the time domain among the corresponding uplink radio resources. For any two of the corresponding uplink radio resources having the overlapped period, the UE decides how to transmit the corresponding pieces of uplink information based on whether the two of the corresponding uplink radio resources belonging to the same group or not, whether the corresponding pieces of uplink information can be jointly transmitted or not, and the priorities of the uplink information.