Abstract: A method of remapping Hybrid Automatic Repeat Request (HARQ) timeline in Time Division Duplex (TDD) uplink-downlink (UL-DL) reconfiguration, for a communication device in a wireless communication system is disclosed. The method includes being reconfigured from a first TDD UL-DL configuration in a first radio frame to a second TDD UL-DL configuration in a second radio frame, determining a TDD UL-DL reference configuration according to UL subframe allocations of the first and second TDD UL-DL configurations in the first radio frame, and performing HARQ processes of the first TDD UL-DL configuration according to a HARQ timeline of the TDD UL-DL reference configuration during the first and second radio frames.

Abstract: A network apparatus communicates with a user equipment via multiple component carriers. The network apparatus is capable of configuring cells to correspond to the component carriers, grouping the cells into cell groups, each including cells less than or equal to a predetermined number, selecting one from the cells to be a primary cell for each cell group, and receiving a physical uplink control channel (PUCCH) on an uplink (UL) CC of the primary cell for one of the at least one CG.

Abstract: A communication device for handling uplink power control comprises the instructions comprise determining a power level of a first uplink (UL) subframe of a first base station and a first power level of a second UL subframe of a second base station according to an initial power level of the first UL subframe and an initial power level of the second UL subframe, wherein a starting boundary of the second UL subframe is within the first UL subframe; and determining a second power level of the second UL subframe of the second base station and a first power level of a third UL subframe of the first base station according to the first power level of the second UL subframe and an initial power level of the third UL subframe, wherein a starting boundary of the third UL subframe is within the second UL subframe.

Abstract: A network for handling resources for a device-to-device (D2D) communication in a time-division duplexing (TDD) system comprises a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise selecting a reference configuration for at least one downlink (DL) transmission of a communication device from a plurality of configuration candidates; determining at least one uplink (UL) subframe for the D2D communication of the communication device according to the reference configuration; transmitting information of the reference configuration to the communication device; transmitting information of the at least one UL subframe to the communication device; and performing the at least one DL transmission with the communication device according to the reference configuration.

Abstract: A network for handling a downlink (DL) transmission in a frequency-division duplexing (FDD) system comprise a storage unit for storing instructions and a processing means coupled to the storage unit. The processing means is configured to execute the instructions stored in the storage unit. The instructions comprise selecting a reference configuration for a DL transmission of a communication device from a plurality of configuration candidates; transmitting information of the reference configuration to the communication device; receiving a hybrid automatic repeat request (HARQ) feedback corresponding to the DL transmission from the communication device according to the reference configuration; and performing the DL transmission with the communication device according to the reference configuration.

Abstract: A network of a half-duplex frequency division duplex (HD-FDD) communication system for handling hybrid automatic repeat request (HARQ) includes a processing means for executing a program; and a storage unit, coupled to the processing means, for storing the program. The program instructs the processing means to perform the following steps: determining a first timing reference for a HARQ of downlink (DL) transmission from a first set of predetermined timing references, and determining a second timing reference for a HARQ of uplink (UL) transmission from a second set of predetermined timing references; and transmitting the first timing reference and the second timing reference to a user equipment of the HD-FDD communication system, allowing the user equipment to perform the HARQ of DL transmission based on the first timing reference and perform the HARQ of UL transmission based on the second timing reference.

Abstract: A communication device for handling uplink power control comprises the instructions comprise determining a power level of a first uplink (UL) subframe of a first base station and a first power level of a second UL subframe of a second base station according to an initial power level of the first UL subframe and an initial power level of the second UL subframe, wherein a starting boundary of the second UL subframe is within the first UL subframe; and determining a second power level of the second UL subframe of the second base station and a first power level of a third UL subframe of the first base station according to the first power level of the second UL subframe and an initial power level of the third UL subframe, wherein a starting boundary of the third UL subframe is within the second UL subframe.

Abstract: The disclosure is directed to a method and apparatus for configuring a table of a network apparatus in a Long Term Evolution (LTE) time division duplexing (TDD) communication system. In one of the exemplary embodiments, the method would include identifying, from UL HARQ reference configurations and DL HARQ reference configurations, valid combinations that are compatible with an eIMTA relay; obtaining, for each of the valid combinations of the UL HARQ reference configurations and the DL HARQ reference configurations, a set of valid UL-DL subframe configuration that is compatible with the eIMTA relay; and obtaining, for each of the valid combinations of the UL HARQ reference configurations and the DL HARQ reference configurations, a set of valid SubframeConfigurationTDD that is compatible with the eIMTA relay.

Abstract: A communication method applicable for a LTE TDD system is disclosed. The communication method includes: if a radio frame has a plurality of UL sub-frames, adopting a flexible TTI bundling operation on at least one of the UL sub-frames in the radio frame; and when the radio frame is changed from a first configuration into a second configuration, the HARQ timing for a eNB to transmit ACK/NACK messages for the bundled UL sub-frames is the same as the HARQ timing for the eNB to transmit ACK/NACK messages for the last sub-frame of the bundled UL sub-frames in the second configuration.

Abstract: A method for determining an uplink hybrid automatic repeat request (UL HARQ) timeline of a time-division duplex (TDD) uplink-downlink (UL-DL) configuration is disclosed herein. The method for determining the UL HARQ timeline includes the following steps: allocating a subframe of the TDD UL-DL configuration for transmission of an UL HARQ ACK/NACK message or of an UL grant message; and forming an equivalent uplink subframe from a downlink subframe by configuring the downlink subframe as a multicast-broadcast single frequency network (MBSFN) subframe or from a special subframe in the TDD UL-DL configuration for transmission of data in response to the UL HARQ NACK message or to the UL grant message.

Abstract: A method for reducing the quantization effect of precoding operations utilizing a finite codebook in MIMO systems is provided. First, at the receiver side, downlink channel state information is obtained and a set of indices of precoding matrices within a plurality of finite codebooks are selected accordingly. The selected indices of precoding matrices for each of the finite codebooks and a set of scalar coefficients are transmitted from the receiver to the transmitter. Thereafter, at the transmitter side, at least a first and a second refined precoding matrices are generated based on the selected set of indices of precoding matrices for all of the finite codebooks, and the one or more scalar coefficients and a final precoding matrix is generated at least based on the first refined precoding matrix and the second refined precoding matrix. The final precoding matrix is applied for transmission between the transmitter and the receiver.

Abstract: Accordingly, the present disclosure is directed to a dynamic time division duplex (TDD) configuration method and a base station using the same method. According to one of the exemplary embodiments, the present disclosure is directed to A dynamic TDD configuration method, applicable to a base station, and the method includes the steps of transmitting a current time division duplex (TDD) configuration, selecting a dynamic TDD configuration based on the current TDD configuration after transmitting the current TDD configuration, and transmitting the dynamic TDD configuration, wherein, the dynamic TDD configuration is a subset of an allowable set comprising one or more possible TDD configurations by which each downlink subframe of the current TDD configuration is not re-configured to a uplink subframe by the dynamic TDD configuration selected from the allowable set.

Abstract: The present disclosure is directed to a user equipment and a base station which use a dynamic time division duplex (TDD) configuration mechanism. The present disclosure proposes implementing the dynamic TDD mechanism by imposing a restriction to the dynamic TDD configurations to adhere to a set of allowable dynamic TDD configurations. The uplink and downlink HARQ timing reference configurations could be derived from the set of allowable dynamic TDD configurations. The set of allowable TDD configurations, the uplink HARQ timing reference configuration and the downlink HARQ timing reference configuration could be derived based on specific rules. The maximum number of downlink HARQ processes for TDD would follow the downlink HARQ timing reference configuration.

Abstract: A method of handling a retransmission of a hybrid automatic repeat request scheme for a receiver in a communication system is disclosed. The method comprises receiving a first payload from a transmitter in the communication system, and feeding back a resource index to the transmitter, to indicate a size for a second payload in the next reception, when the receiver is unsuccessful to decode the first payload into a plurality of information bits, wherein the transmitter encodes the plurality of information bits into the first payload by using an error correction code.

Abstract: A method of remapping Hybrid Automatic Repeat Request (HARQ) timeline in Time Division Duplex (TDD) uplink-downlink (UL-DL) reconfiguration, for a communication device in a wireless communication system is disclosed. The method includes being reconfigured from a first TDD UL-DL configuration in a first radio frame to a second TDD UL-DL configuration in a second radio frame, determining a TDD UL-DL reference configuration according to UL subframe allocations of the first and second TDD UL-DL configurations in the first radio frame, and performing HARQ processes of the first TDD UL-DL configuration according to a HARQ timeline of the TDD UL-DL reference configuration during the first and second radio frames.

Abstract: A method of reducing quantization error caused by precoding for a receiver in a wireless communication system is disclosed. The method comprising measuring channel information of a channel between the receiver and a transmitter in the wireless communication system; determining at least one precoding matrix from at least one codebook according to the channel information of the channel; determining at least one geometric coefficient according to a Geodesic interpolation algorithm and the at least one precoding matrix, for the at least one precoding matrix, respectively; and feeding back the at least one precoding matrix and the at least one geometric coefficient to the transmitter.

Abstract: A method of associating a plurality of mobile devices with a plurality of transmission points in a wireless communication system for a set of the plurality of transmission points is disclosed. The method comprises dividing the plurality of mobile devices into a plurality of mobile device groups according to a plurality of signal qualities between the plurality of transmission points and the plurality of mobile devices by using at least one statistical learning technique; and associating one of the plurality of mobile device groups with one of a plurality of transmission groups, wherein the plurality of transmission groups are obtained from the plurality of transmission points.

Abstract: A method of handling a retransmission of a hybrid automatic repeat request scheme for a receiver in a communication system is disclosed. The method comprises receiving a first payload from a transmitter in the communication system, and feeding back a resource index to the transmitter, to indicate a size for a second payload in the next reception, when the receiver is unsuccessful to decode the first payload into a plurality of information bits, wherein the transmitter encodes the plurality of information bits into the first payload by using an error correction code.

Abstract: A method for reducing the quantization effect of precoding operations utilizing a finite codebook in MIMO systems is provided. First, at the receiver side, downlink channel state information is obtained and a set of indices of precoding matrices within a plurality of finite codebooks are selected accordingly. The selected indices of precoding matrices for each of the finite codebooks and a set of scalar coefficients are transmitted from the receiver to the transmitter. Thereafter, at the transmitter side, at least a first and a second refined precoding matrices are generated based on the selected set of indices of precoding matrices for all of the finite codebooks, and the one or more scalar coefficients and a final precoding matrix is generated at least based on the first refined precoding matrix and the second refined precoding matrix. The final precoding matrix is applied for transmission between the transmitter and the receiver.

Abstract: A method for reducing the quantization effect of precoding operations utilizing a finite codebook in multiple-input multiple-output (MIMO) or multiple-input single-output (MISO) systems from a transmitter to a receiver is provided. First, downlink channel state information is obtained at the receiver side. A set of indices of precoding matrices or a set of precoding matrices within the finite codebook are determined according to the obtained downlink channel state information at the receiver side. The selected indices of precoding matrices and a set of scalar coefficients are transmitted from the receiver to the transmitter. Thereafter, a refined precoding matrix is generated based on the set of indices of precoding matrices and the one or more scalar coefficients at the transmitter side. The refined precoding matrix is applied for transmission between the transmitter and the receiver.