摘要:
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.
摘要:
A method of handling control information for a mobile device in a wireless communication system is disclosed. The mobile device is configured with a coordinated multipoint transmission/reception (CoMP) operation by network of the wireless communication system. The method comprises determining at least one cooperating cell or cooperating point of the network involving in the CoMP operation or involving in downlink (DL) transmissions to the mobile device or uplink (UL) receptions from the mobile device; and feeding back the control information to the at least one cooperating cell or cooperating point on at least one UL channel.
摘要:
A method of handling an acknowledgement/negative acknowledgement (ACK/NACK) transmission for a mobile device with a carrier aggregation (CA) in a wireless communication system is disclosed. The method comprises receiving a configuration or an activation of the CA with at least one uplink (UL) component carrier and a plurality downlink (DL) component carriers from a network of the wireless communication system, and performing a simultaneous transmission of a scheduling request (SR) and the ACK/NACK, which corresponds to DL transmissions on the plurality of DL component carriers, with at least one PUCCH resource or on at least one PUCCH resource in a subframe according to one of a plurality of ACK/NACK transmission schemes configured or supported by the network.
摘要:
A method of handling uplink (UL) control information for a mobile device supporting a carrier aggregation (CA) in a wireless communication system is disclosed. The method comprises receiving a configuration or an activation of the CA with at least one UL component carrier and at least one downlink (DL) component carrier from a network of the wireless communication system, and transmitting the UL control information on at least one control channel region of the at least one UL component carrier; wherein the at least one UL component carrier has a bandwidth configuration sufficient to accommodate the at least one control channel region for transmitting the UL control information.
摘要:
A method of acquiring control format indicator information on a physical control format indicator channel transmitted by a network of a wireless communication system for a mobile device in the wireless communication system is disclosed. The method comprises locating the PCFICH of a downlink component carrier of a cell in the wireless communication system according to at least one of a cell-specific frequency offset, a mobile device-specific offset, a component carrier-specific offset and an additional cell-specific offset.
摘要:
A method of handling a sounding reference signal (SRS) and a physical uplink control channel (PUCCH) for a mobile device in a wireless communication system is disclosed. The method comprises enabling a mobile device-specific carrier aggregation with at least one component carrier, transmitting the SRS on a first component carrier of the at least one component carrier in a first subframe to a network of the wireless communication system, and transmitting the PUCCH on a second component carrier of the at least one component carrier in the first subframe to the network of the wireless communication system.
摘要:
A method of improving component carrier identification in a random access procedure for a UE of a wireless communication system includes transmitting a random access preamble on an UL component carrier to a network of the wireless communication system by using a PRACH resource corresponding to an anchor component carrier of a plurality of DL component carriers, so that the network identifies the anchor component carrier according to the PRACH resource used for transmitting the random access preamble.
摘要:
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.
摘要:
A method of performing feedback load reduction for a mobile device in a wireless communication system is disclosed. The method comprises measuring a signal from the network to get Channel State Information (CSI); comparing the measured CSI with at least one threshold and determining one region where the CSI falls in from a plurality of regions divided by the at least one threshold and ranked in order; and sending a rank for the determined region to the network.
摘要:
Method for realizing MBMS under bandwidth aggregation, CoMP and relay operation includes allowing a first cell in an MBSFN area to transmit data on a physical downlink data channel in a first subframe while a second cell in the MBSFN area transmitting MBMS data on a physical multicast channel in a second subframe; wherein the first cell operates in a first wireless communication system and the second cell operates in a second wireless communication system; wherein the first wireless communication system is as same as the second wireless communication system, or the first wireless communication system is different from the second wireless communication system.