公开(公告)号：US10051588B2

公开(公告)日：2018-08-14

申请号：US14952966

申请日：2015-11-26

Applicant: MEDIATEK INC.

Inventor： James June-Ming Wang ,  Yuh-Ren Jauh ,  Ching-Hwa Yu ,  Chih-Shi Yee ,  Yasantha N. Rajakarunanayake ,  Tianyu Wu

IPC: H04W56/00 ,  H04W72/04 ,  H04W72/08 ,  H04W84/12

Abstract: A method of mitigating inter-BSS interference via synchronized inter-BSS operation is proposed. By aligning the transmission of UL and DL transmission in two overlapping OBSSs, the inter-BSS STA-to-STA and inter-BSS AP-to-AP types of interference can be eliminated. Furthermore, based on the BSS overlapping geometry and the STA location, different interference mitigation schemes can be applied to mitigate inter-BSS AP-to-STA and inter-BSS STA-to-AP types of interference.

公开(公告)号：US20170063512A1

公开(公告)日：2017-03-02

申请号：US15123247

申请日：2015-03-04

Applicant: Tianyu Wu ,  Jianhan Liu ,  KIRAN ULN ,  Thomas Edward Pare, JR. ,  MEDIATEK INC.

Inventor： Tianyu Wu ,  Jianhan Liu ,  KIRAN ULN ,  Thomas Edward Pare, JR.

IPC: H04L5/00 ,  H04W72/08 ,  H04W72/04 ,  H04B7/04

CPC classification number: H04L5/0057 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0623 ,  H04B7/0626 ,  H04B7/0632 ,  H04B17/24 ,  H04B17/336 ,  H04L1/1671 ,  H04L1/1685 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04W72/0446 ,  H04W72/082

Abstract: A method of sub-channel feedback in OFDMA systems is provided. A wireless receiving device (STA) receives a radio signal from a transmitting device (AP) over a wide channel in an OFDMA system. The radio signal is transmitted over multiple sub-channels of the wide channel. The STA estimates channel quality information based on the received radio signal for each sub-channel. The STA then sends feedback information to the transmitting device. The feedback information comprises the estimated channel quality information for a selected subset of sub-channels from the wide channel based on a predefined rule. In one embodiment, the feedback information is embedded within an ACK/BA frame or is carried in a frame immediately subsequent to the ACK/BA frame.

Abstract translation: 提供OFDMA系统中子信道反馈的方法。 无线接收设备（STA）通过OFDMA系统中的宽信道从发射设备（AP）接收无线电信号。 无线电信号通过宽信道的多个子信道发送。 STA基于每个子信道的接收到的无线电信号来估计信道质量信息。 然后，STA向发送设备发送反馈信息。 基于预定义规则，反馈信息包括来自宽信道的子信道的选定子集的估计信道质量信息。 在一个实施例中，反馈信息被嵌入到ACK / BA帧内，或者紧接在ACK / BA帧之后的帧中被携带。

公开(公告)号：US20160157195A1

公开(公告)日：2016-06-02

申请号：US14952966

申请日：2015-11-26

Applicant: MEDIATEK INC.

Inventor： James June-Ming Wang ,  Yuh-Ren Jauh ,  Ching-Hwa Yu ,  Chih-Shi Yee ,  Yasantha N. Rajakarunanayake ,  Tianyu Wu

IPC: H04W56/00 ,  H04W72/04 ,  H04W72/08

CPC classification number: H04W56/001 ,  H04W56/0015 ,  H04W72/046 ,  H04W72/082 ,  H04W84/12

Abstract: A method of mitigating inter-BSS interference via synchronized inter-BSS operation is proposed. By aligning the transmission of UL and DL transmission in two overlapping OBSSs, the inter-BSS STA-to-STA and inter-BSS AP-to-AP types of interference can be eliminated. Furthermore, based on the BSS overlapping geometry and the STA location, different interference mitigation schemes can be applied to mitigate inter-BSS AP-to-STA and inter-BSS STA-to-AP types of interference.

Abstract translation: 提出了一种通过同步的BSS间操作来减轻BSS间干扰的方法。 通过在两个重叠的OBSS中对齐UL和DL传输的传输，可以消除BSS间STA到STA和BSS间AP到AP的干扰类型。 此外，基于BSS重叠几何和STA位置，可以应用不同的干扰减轻方案来减轻BSS间AP到STA和BSS间STA到AP的干扰类型。

公开(公告)号：US20160066257A1

公开(公告)日：2016-03-03

申请号：US14838366

申请日：2015-08-28

Applicant: MEDIATEK INC.

Inventor： Jianhan Liu ,  Tianyu Wu ,  Rongsheng Huang ,  James June-Ming Wang

IPC: H04W48/16 ,  H04L5/00 ,  H04W72/08

CPC classification number: H04L5/006 ,  H04L1/0003 ,  H04W28/06 ,  H04W28/18 ,  H04W48/16 ,  H04W74/00 ,  H04W74/0808 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/142

Abstract: A spatial reuse prioritized channel access scheme is proposed to enhance the average throughput per station in a wireless network by optimizing spatial reuse. Spatial reuse capability (SRC) is defined as a monotonically decreasing function of co-channel interference signal strength from OBSSs. Higher spatial reuse capability can be transformed into higher data rate or less usage of airtime by using higher MCS or less interferences to OBSSs by reducing TX power. By allowing the stations that have larger spatial reuse capability to have higher probability to win channel access contention, the overall network throughput is enhanced.

Abstract translation: 提出了空间重用优先级信道接入方案，通过优化空间重用来提高无线网络中每个站的平均吞吐量。 空间复用能力（SRC）被定义为来自OBSS的同信道干扰信号强度的单调递减函数。 通过降低TX功率，可以通过使用更高的MCS或更少的OBSS干扰来将更高的空间重用能力转换为更高的数据速率或更少的通话时间的使用。 通过允许具有较大空间重用能力的站点具有较高的赢得频道接入争用的概率，增强了整体网络吞吐量。