Htc Corporation

National Taiwan University

Mediatek Singapore Pte. Ltd.

Ping-Cheng Yeh

Ling-San Meng

Chih-Yao Wu

Yu-Chih Jen

Pang-Chang Lan

Chia-Chun Hsu

Chun-Ting Chou

Hung-Yun Hsieh

Zhu-Jun Yang

Jie-Cheng Huang

A fast device discovery protocol with a high success rate for device-to-device (D2D) communication in LTE-A networks is proposed. With the proposed protocol, device discovery is done by monitoring a randomly transmitted beacon from other devices within a pre-defined period. In one embodiment, an eNB receives scheduling requests from D2D UEs and in response allocates a distributed uplink resource for random access of beacon transmission by the D2D UEs. The distributed resource is dynamically allocated based on the number of requesting D2D UEs, a discovery period, and a target discovery probability to minimize the required resource.

Device discovery using distributed random access for device to device communication

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.

Multiple-input multiple-output systems and methods for wireless communication thereof for reducing the quantization effect of precoding operations utilizing finite codebooks

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.

Method of handling a damage information-assisted hybrid ARQ scheme and related communication device

Growing community of inventors

Taipei, Taiwan

Ping-Cheng Yeh