Mediatek Singapore Pte. Ltd.

Mediatek Corporation

Chung-Ta Ku

Po-Yuen Cheng

Yongho Seok

Jianhan Liu

Weisung Tsao

Thomas Edward Pare

James Chih-Shi Yee

Samat Shabdanov

James June-Ming Wang

Gabor Bajko

Thomas Edward Pare, Jr

Chien-Fang Hsu

Chia-Hung Tsai

Gary Allen Anwyl

Shuling Feng

Cheng-Hsi Marik Hsiao

Shihchieh Lee

Samet Shabdanov

Thomas Edward Pare Jr

Jr Thomas Edward Pare

A method and an apparatus for handling coordinated association in a wireless network with multiple access points are described. A method comprises receiving network parameters, determining a plurality of AP-STA associations, and sending the plurality of associations to the STAs. An apparatus includes controlling, managing, and optimization modules implementing the method of handling coordinated association in a wireless network.

Method and apparatus of handling coordinated association in a wireless network with multiple access points

Embodiments of the present invention substantially mitigate or prevent in-device and inter-device interference (e.g., AACI) by grouping wireless stations associated with an AP according to their estimated physical proximity with each other. The transmissions to/from STAs within a group can be coordinated so that a wireless transmission does not interfere with the wireless reception of another STA within the same group. In this way, desense is avoided and the wireless reception can be performed efficiently.

Systems and methods for avoiding interference between wireless devices in a wireless network

Methods and apparatus for enabling data transmission using HARQ in IEEE 802.11 systems are described. A method is disclosed, performed by a transmitting device, comprising computing a plurality of redundancy frames based on a plurality of data frames, transmitting the plurality of data frames to a receiving device, and transmitting a set of the plurality of redundancy frames to the receiving device determined by the transmitting device in response to receiving acknowledgement. One embodiment includes a method determining failed data frames of the plurality of data frames, requesting a set of the plurality of redundancy frames, and recovering the failed data frame using a decoder employing hard decision inputs. Other embodiments include an apparatus in a receiver device implementing the method of decoding the failed data frames using a decoder employing soft decision inputs.

Apparatus and methods for HARQ in a wireless network

Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Codewords are associated with cyclic redundancy checks (CRCs) for detecting errors, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.

Retransmission schemes based on LLR combining in WLAN

An apparatus implemented in a master access point (AP) selects at least one basic service set (BSS) from one or more neighbor BSSs to form a spatial reuse group (SRG). The apparatus then performs coordinated spatial reuse (CSR) in the SRG with a set of overlapping basic service set (OBSS) power detection (PD) parameters.

Multi-access point coordinated spatial reuse protocol and algorithm

Embodiments of the present invention provide systems and methods for synchronous independent channel access in a wireless network. The synchronous independent channel access can be performed by a wireless station having multiple transceivers for simultaneous communication over multiple wireless bands. A wireless station can connect wirelessly to a wireless access point to access a first primary wireless band during a transmission opportunity, and can use early access on a second primary wireless band without receiving a transmission opportunity. The transmission and reception of data frames over the different primary channels are synchronized to prevent or mitigate inter-channel interference. According to some embodiments, the channels are synchronized using back-off procedures and/or padding to align the ending time of transmitted and received data frames, for example.

System and method for synchronous independent channel access in a wireless network

Embodiments of the present invention provide a method and apparatus for enhanced data retransmission based on log-likelihood ratio (LLR) combining in WLAN. According to some embodiments, packets can be retransmitted using a modified transmission scheme. Packets that are received with an error are stored, and a subsequent packet is received that includes data that can be used to correct the error. For example, each packet can be encoded for both error detection and correction, and the retransmission mechanism can be adapted to the error rate. The retransmission scheme is improved by utilizing an LLR combining scheme, transmit diversity, and modified ACK methods.

A wireless communication method includes setting at least one specific subfield of a control field in a report frame, and transmitting the report frame to an access point for communicating with the access point on uplink (UL) Orthogonal Frequency-Division Multiple Access (OFDMA). In addition, the wireless communication method is performed by a program code loaded from a storage device of a wireless communication device and executed by a processor of the wireless communication device.

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San Jose, CA, United States of America

Chung-Ta Ku