Acer Inc.

Cheng-Kang Pai

I-Kang Fu

Shiang-Jiun Lin

Wern-Ho Sheen

Wen-Ho Sheen

A wireless communication system includes one or more base stations, which may include one or more antennas for signal communications; a transceiver device, and a communication control device. The transceiver device is configured to communicate with a first group of relay stations being configured to receive and relay a first group of wireless communication signals from at least one base station and a second group of relay stations being configured to receive and relay a second group of wireless communication signals from at least one base station. The communication control device is configured to control one or both of (1) signal transmission power of at least one antenna and (2) signal communication timing of at least one antenna. The communication control device is also configured to divide a service period of the antenna into multiple phases, to enable communication of signals directed toward or from the first group of relay stations in a first phase, and to enable the second group of relay stations to communicate signals with one or both of the user device and the base station, during at least a part of the first phase, independently from the signals directed toward or from the first group of relay stations.

Scheduling methods and systems for multi-hop relay in wireless communications

A scheduling method for a wireless multi-hop relay communication system, wherein the communication system includes a base station dominating a plurality of relay stations, the scheduling method including separating the plurality of relay stations into N groups, N being a natural number, dividing a period for providing a service by the base station into N phases, wherein N is the number of the groups of the relay stations, serving the relay stations in a jgroup during an iphase by the base station, wherein 1&#x2266;i, j&#x2266;N, and serving a user or a subordinate relay station within service areas of the relay stations not in the jgroup during the iphase by the relay stations not in the jgroup.

Scheduling methods and systems for wireless multi-hop relay communications

A scheduling technique for wireless multihop relay communication systems is provided. With spatial separation caused by the shadowing effect of surrounding buildings, a base station and its relay stations in a single cell are divided into several groups by following the rule that stations with severe potential interference are separated into different groups. The base station arranges the scheduling of these groups and serves these groups sequentially in the time domain. To take advantage of shadow effect, the same radio resources can be scheduled for relay stations within the same group due to the isolation of interfering signals. In the present invention, base stations and relay stations are equipped with directional antennas or sector antennas to further exploit the advantage of spatial separations. Different relay groups can also reuse the radio resource through appropriate power control. The cell capacity can be enhanced substantially because of aggressive radio resource reuse.

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Sindian, Taiwan

Cheng-Kang Pai