Mediatek Corporation

Mediatek Singapore Pte. Ltd.

Yung-Ping Hsu

Jianhan Liu

James June-Ming Wang

Chao-Chun Wang

Gabor Bajko

Tianyu Wu

Thomas Edward Pare, Jr

Shengquan Hu

Chih-Shi Yee

Li-Chun Ko

Ching-Hwa Yu

Yuh-Ren Jauh

Shuling Feng

Hsuan-Yu Liu

Vishakan Ponnampalam

Kun-Chien Hung

Kai-Chun Chou

Chi-Shi Yee

Jr Thomas Edward Pare

James Wang

Thomas Edward Pare Jr

A method of combined direction finding (DF) and fine timing measurement (FTM) positioning in a wireless location area network (WLAN) is proposed. A multiple antenna IEEE 802.11 transmitting device (AP) can transmit signal preamble containing multiple Long Training Field (LTF) symbols in a radio frame from multiple antennas, which allows a receiving device (STA) to resolve multiple DF sounding signals transmitted from the multiple antennas and thereby estimating angle of departure (AoD). On the other hand, the AP can estimate angle of arrival (AoA) from radio signals transmitted from the STA. When the radial resolution error of AoD or AoA positioning increases, DF positioning and fine-timing measurement (FTM) ranging can be jointly applied to reduce the radial resolution error and extends the AoD/AoA service area with positing accuracy.

Direction finding and FTM positioning in wireless local area networks

A method of direction finding (DF) positioning in a wireless location area network (WLAN) is proposed. A multiple antenna IEEE 802.11 transmitting device can transmit signal preamble containing multiple Long Training Field (LTF) symbols in a radio frame from multiple antennas simultaneously, which allows a receiving device to resolve multiple DF sounding signals transmitted from the multiple antennas. As a result, angle of departure (AoD) of the transmitting device can be estimated by using the multiple resolved DF sounding signals from each antenna for DF positioning purpose.

Direction finding positioning in wireless local area networks

A wireless device and an associated wireless device are proposed. The wireless device includes a first receiving circuit, a second receiving circuit and a detector. The first receiving circuit is arranged to receive signals in a first band. The second receiving circuit is arranged to selectively receive signals in the first band or signal reception in a second band according to a first control signal, wherein the second band is different from the first band. The detector is arranged to detect existence of a transmission signal in the second band to set the first control signal.

Wireless device for improving operating efficiency

A communication method for a wireless network is disclosed. The wireless network comprises a plurality of wireless devices. The method comprises transmitting one or multiple packets with an omni-beam by a first wireless device to a second wireless device in a packet exchange during an omni-beam duration to indicate a sectorized-beam duration, receiving the packet(s) by a third wireless device, transmitting/receiving data by the first wireless device using a sectorized beam in a packet exchange with the second wireless device during the sectorized beam duration, and detecting by the third wireless device the sectorized beam packet(s) from the first wireless device and packet(s) from the second wireless device, if no sectorized beam packet(s) from the first wireless device and packet(s) from the second wireless device is detected, the third wireless device starting to communicating with a fourth wireless device.

Sectorized beam operation for wireless networks

A method of downlink multi-sector transmission is provided. An initiator station first performs sector training by transmitting a plurality of sounding signals to a plurality of responder stations in a wireless network. The coverage associated with the initiator station is partitioned into a plurality of sectors, and each sector is covered by a sectorized beam. The initiator station then receives sector ID feedback information from each responder station in response to the sounding signals. The sector ID feedback information indicates preference to each of the sectors from each responder station. Next, the initiator station groups multiple spatially orthogonal responder stations together based on the sector ID feedback information. Finally, the initiator station performs multi-sector transmission by simultaneously transmitting data to the multiple responder stations in different sectors using corresponding sectorized beams.

Sectorization feedback and multi-sector transmission in wireless networks

A method is provided for sharing a communications channel in a wireless communications system. A network coordinating device of the wireless network obtains a first path quality information of each of a first set of one or more communications paths between a first pair of communications devices. The coordinating device also obtains a second path quality information of each of a second set of communications paths between a second pair of communications devices. The coordinating device then determines one or more co-existing communications paths based on the first and the second path quality information in accordance with a predetermined rule. Finally, the coordinating device sends channel resource allocation information to the first pair and the second pair of communications devices to use corresponding co-existing communications paths such that the first pair and the second pair of communications devices communicate over the communications channel during a period of time concurrently.

Method for achieving frequency reuse in wireless communications systems

Growing community of inventors

Taipei, Taiwan

Yung-Ping Hsu