Abstract: The disclosure provides a method of transmitting and receiving channel state information reference signal (CSI-RS) and related apparatuses using the same method. According to one of the exemplary embodiments, the proposed method would include not limited to mapping a CSI-RS into a plurality of beams which comprises a first beam group and a second beam group, wherein each of a first plurality of beams of the first beam group is transmitted toward a different direction from each of a second plurality of beams of the second beam group; and transmitting the first beam group and the second beam group; and receiving a channel state information (CSI) which correspond to a beam of the first beam group or a beam of the second beam group.

Abstract: A communicating method for an antenna array communication system, a user equipment and a base station are provided. The communicating method includes the following steps. A plurality of beams which are formed by a plurality of antennas is transmitted by a base station, and some of the beams is selected by a user equipment. A beam set of the selected beams for the user equipment is configured by the base station. A pre-coding information is fed back to the base station according to the configured beam set by the user equipment.

Abstract: The disclosure provides a method of transmitting and receiving channel state information reference signal (CSI-RS) and related apparatuses using the same method. According to one of the exemplary embodiments, the proposed method would include not limited to mapping a CSI-RS into a plurality of beams which comprises a first beam group and a second beam group, wherein each of a first plurality of beams of the first beam group is transmitted toward a different direction from each of a second plurality of beams of the second beam group; and transmitting the first beam group and the second beam group; and receiving a channel state information (CSI) which correspond to a beam of the first beam group or a beam of the second beam group.

Abstract: A communication device for uplink transmission with a first type of information and a second type of information includes a demultiplexing circuit, a vector selection circuit, a permutation circuit and a Reed-Muller encoding circuit. The demultiplexing circuit generates a first group of information bits and a second group of information bits according to the first type of information and the second type of information. The vector selection circuit selects code vectors from a predetermined vector set for the first group of information bits and the second group of information bits. The permutation circuit permutes the code vectors according to the first group of information bits and according to the second group of information bits. The Reed-Muller encoding circuit encodes the first group of information bits and the second group of information bits with the permuted code vectors for providing different levels of protection.

Abstract: A communication station includes a modulation circuit, a mapping circuit and a transmitting circuit. The modulation circuit is configured to operably modulate the master information block (MIB). The mapping circuit is configured to operably map the modulated MIBs to the new carrier type physical broadcast channel (PBCH). The PBCH is configured in a plurality of radio frames. The transmitting circuit is configured to operably transmit the radio frames. Moreover, the mapping circuit maps the modulated MIBs to only part of six central radio blocks of the predetermined subframes of the radio frames. The six central radio blocks are configured to locate around the DC subcarrier.

Abstract: A method of handling a hybrid automatic repeat request acknowledgement response for a network of a wireless communication system includes the network selecting a plurality of first communication devices from a plurality of communication devices of the wireless communication system; and the network responding to the plurality of first communication devices with a positive HARQ acknowledgement message. The plurality of communication devices transmits a plurality of uplink transmissions to the network.

Abstract: A method of handling data transmissions via beam sectors for a network comprises allocating at least one first communication device to a first beam sector; receiving at least one first pilot transmitted by the at least one first communication device via the first beam sector; estimating at least one first channel according to the at least one first pilot; and performing at least one first transmission to the at least one first communication device via the first beam sector, after filtering the at least one first transmission according to the at least one first channel.

Abstract: A method of handling hybrid automatic repeat request (HARQ) acknowledgement responses in a network of a wireless communication system is disclosed. The method comprises selecting a plurality of communication devices of the wireless communication system when the plurality of communication devices conform to a specified rule; and always responding positive HARQ acknowledgement messages to the plurality of communication devices.

Abstract: A method of handling hybrid automatic repeat request (HARQ) acknowledgement responses in a network of a wireless communication system is disclosed. The method comprises assigning resources for a plurality of physical hybrid indicator channels (PHICHs) and a plurality of extended physical hybrid indicator channels (ePHICHs); and transmitting a HARQ acknowledgement response to a communication device of the wireless communication system on a channel selected from the plurality of PHICHs and the plurality of ePHICHs, after receiving an uplink transmission from the communication device.

Abstract: A carrier aggregation wireless network system and a base station (BS), a wireless communication device, and a synchronization method thereof are disclosed. The wireless communication device receives a wireless signal from the BS. The wireless signal includes a primary cell (pcell) and a secondary cell (scell). A subframe of the scell includes a first OFDM symbol and a second OFDM symbol. The first OFDM symbol includes an extended primary synchronization signal (PSS). The second OFDM symbol includes a PSS. The scell includes a secondary synchronization signal (SSS). The wireless communication device acquires synchronization according to the extended PSS and/or the PSS. In addition, the wireless communication device may also acquire synchronization according to a cell ID, the PSS, and the SSS.

Abstract: A method for reporting uplink control information and a wireless communication device using the same are disclosed. The wireless communication device supports multiple component carriers (CC), and the proposed method includes following steps. When a base station requests the wireless communication device to transmit aperiodic channel state information (CSI) report of one or more downlink CC to the base station, but the CSI of the downlink CCs may be invalid, following steps are executed on the downlink CC. Full payloads of channel quality indicator (CQI)/precoding matrix indicator (PMI) corresponding to a plurality of selectable RI values of the downlink CC are respectively calculated. Additionally, an RI value of the downlink CC is selected according to the full payloads of the CQI/PMI corresponding to the selectable RI values.

Abstract: A communicating method for an antenna array communication system, a user equipment and a base station are provided. The communicating method includes the following steps. A plurality of beams which are formed by a plurality of antennas is transmitted by a base station, and some of the beams is selected by a user equipment. A beam set of the selected beams for the user equipment is configured by the base station. A pre-coding information is fed back to the base station according to the configured beam set by the user equipment.

Abstract: A communication station includes a modulation circuit, a mapping circuit and a transmitting circuit. The modulation circuit is configured to operably modulate the master information block (MIB). The mapping circuit is configured to operably map the modulated MIBs to the new carrier type physical broadcast channel (PBCH). The PBCH is configured in a plurality of radio frames. The transmitting circuit is configured to operably transmit the radio frames. Moreover, the mapping circuit maps the modulated MIBs to only part of six central radio blocks of the predetermined subframes of the radio frames. The six central radio blocks are configured to locate around the DC subcarrier.

Abstract: A communication device for uplink transmission with a first type of information and a second type of information includes a demultiplexing circuit, a vector selection circuit, a permutation circuit and a Reed-Muller encoding circuit. The demultiplexing circuit generates a first group of information bits and a second group of information bits according to the first type of information and the second type of information. The vector selection circuit selects code vectors from a predetermined vector set for the first group of information bits and the second group of information bits. The permutation circuit permutes the code vectors according to the first group of information bits and according to the second group of information bits. The Reed-Muller encoding circuit encodes the first group of information bits and the second group of information bits with the permuted code vectors for providing different levels of protection.

Abstract: A carrier aggregation wireless network system and a base station (BS), a wireless communication device, and a synchronization method thereof are disclosed. The wireless communication device receives a wireless signal from the BS. The wireless signal includes a primary cell (pcell) and a secondary cell (scell). A subframe of the scell includes a first OFDM symbol and a second OFDM symbol. The first OFDM symbol includes an extended primary synchronization signal (PSS). The second OFDM symbol includes a PSS. The scell includes a secondary synchronization signal (SSS). The wireless communication device acquires synchronization according to the extended PSS and/or the PSS. In addition, the wireless communication device may also acquire synchronization according to a cell ID, the PSS, and the SSS.

Abstract: A method of performing a retransmission of a packet from a plurality of transmission points in a wireless communication system to a mobile device of the wireless communication system is disclosed. The method comprises transmitting the packet from a first transmission point of the plurality transmission points to the mobile device in a first transmission; and transmitting the packet from a second transmission point of the plurality transmission points to the mobile device in a second transmission, after transmitting the packet from the first transmission point in the first transmission, wherein the first transmission point and the second transmission point are different transmission points.

Abstract: A method of performing a retransmission of a packet from at least one transmission point of a wireless communication system to a mobile device in the wireless communication system is disclosed. The method comprises transmitting the packet from the at least one transmission point to the mobile device by using a first resource group in a first transmission; and transmitting the packet from the at least one transmission point to the mobile device by using a second resource group in a second transmission, after transmitting the packet in the first transmission, wherein the first resource group and the second resource group are different resource groups.

Abstract: A method for reporting uplink control information and a wireless communication device using the same are disclosed. The wireless communication device supports multiple component carriers (CC), and the proposed method includes following steps. When a base station requests the wireless communication device to transmit aperiodic channel state information (CSI) report of one or more downlink CC to the base station, but the CSI of the downlink CCs may be invalid, following steps are executed on the downlink CC. Full payloads of channel quality indicator (CQI)/precoding matrix indicator (PMI) corresponding to a plurality of selectable RI values of the downlink CC are respectively calculated. Additionally, an RI value of the downlink CC is selected according to the full payloads of the CQI/PMI corresponding to the selectable RI values.

Abstract: A method and apparatus for calibration and channel state feedback to support transmit beamforming in a multiple-input multiple-output (MIMO) system are disclosed. For radio frequency (RF) calibration, a first station (STA) sends a calibration request to a second STA, and the second STA sends a sounding packet to the first STA. The first STA receives the sounding packet, performs at least one channel measurement and performs calibration based on the channel measurement. For channel state feedback, the first STA sends a channel state feedback request to the second STA. The second STA sends a sounding packet to the first STA. The first STA receives the sounding packet and performs at least one channel measurement with the sounding packet. The first STA then calculates a steering matrix for transmit beamforming based on the channel measurement.

Abstract: A method and apparatus for calibration and channel state feedback to support transmit beamforming in a multiple-input multiple-output (MIMO) system are disclosed. For radio frequency (RF) calibration, a first station (STA) sends a calibration request to a second STA, and the second STA sends a sounding packet to the first STA. The first STA receives the sounding packet, performs at least one channel measurement and performs calibration based on the channel measurement. For channel state feedback, the first STA sends a channel state feedback request to the second STA. The second STA sends a sounding packet to the first STA. The first STA receives the sounding packet and performs at least one channel measurement with the sounding packet. The first STA then calculates a steering matrix for transmit beamforming based on the channel measurement.