公开(公告)号：US09980292B2

公开(公告)日：2018-05-22

申请号：US14925891

申请日：2015-10-28

Applicant: MEDIATEK INC.

Inventor： Yuh-Ren Jauh ,  Ching-Hwa Yu ,  James June-Ming Wang ,  Chao-Chun Wang

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/02 ,  H04W72/04

CPC classification number: H04W74/0833 ,  H04L1/1607 ,  H04L5/0007 ,  H04W72/02 ,  H04W72/042

Abstract: A method of performing contention-based uplink OFDMA transmission is proposed in accordance with one novel aspect. A wireless communications station (an AP) reserves both dedicated resource and contention resource for uplink OFDMA operation for a list of communications devices (STAs). For contention-based random access, the AP does not need to collect traffic requests from the STAs. The AP only needs to make simple resource arrangement. The AP only needs to specify the allocated resource for random access and the uplink OFDMA operation duration and timing for each uplink OFDMA packet. Each STA having traffic request will contend the resource based on a random access probability scheme.

公开(公告)号：US09699810B2

公开(公告)日：2017-07-04

申请号：US15238498

申请日：2016-08-16

Applicant: MediaTek Inc.

Inventor： Li-Chun Ko ,  Chia-Hsiang Hsu ,  Ching-Hwa Yu ,  Ho-Chun Chiang

IPC: H04W4/00 ,  H04W74/08 ,  H04W74/04 ,  H04W72/12 ,  H04W74/00 ,  H04W88/06 ,  H04W84/12 ,  H04W84/04

CPC classification number: H04W74/0816 ,  H04W72/1215 ,  H04W74/004 ,  H04W74/04 ,  H04W84/042 ,  H04W84/12 ,  H04W88/06

Abstract: A mobile communications device supporting operation on a first wireless technology and a second wireless technology is provided. The device includes a wireless module performing wireless transceiving to and from a first station of a first wireless technology and a second station of a second wireless technology, and a controller module, transmitting a control message prior to the starting of a uplink transmission period of the first wireless technology via the wireless module to occupy the uplink transmission period of the first wireless technology so as to allow transmission of signals of the second wireless technology during the uplink transmission period of the first wireless technology. In operation, the controller module further rearranges the transmission of signals of the second wireless technology to end the transmission of signals of the second wireless technology prior to the starting of a downlink transmission period of the first wireless technology.

公开(公告)号：US20160135136A1

公开(公告)日：2016-05-12

申请号：US14937606

申请日：2015-11-10

Applicant: MEDIATEK INC.

Inventor： James June-Ming Wang ,  Ching-Hwa Yu ,  Kai-Chun Chou ,  Chih-Shi Yee

IPC: H04W56/00

CPC classification number: H04W56/001 ,  G01S5/021 ,  G01S5/0221 ,  G01S5/06 ,  G01S5/12 ,  G01S5/14 ,  H04W64/00 ,  H04W84/12 ,  H04W84/18

Abstract: A method of joint position detection by a plurality of known location sensor devices is proposed in an indoor wireless local area network. A tag can query the sensors by sending a request. Timestamps of the query signal are recorded by the sensors. A known location designated sensor responds to the request and triggers a process to correct the clock offsets of other sensors. The timestamps are then corrected based on the clock offsets. The corrected timestamps are then sent to a position processor for determining the tag location.

Abstract translation: 在室内无线局域网中提出了一种通过多个已知位置传感器装置进行联合位置检测的方法。 标签可以通过发送请求来查询传感器。 查询信号的时间戳由传感器记录。 已知的位置指定传感器响应该请求并且触发一个过程来校正其他传感器的时钟偏移。 然后基于时钟偏移校正时间戳。 然后将校正的时间戳发送到用于确定标签位置的位置处理器。

公开(公告)号：US20160128102A1

公开(公告)日：2016-05-05

申请号：US14925891

申请日：2015-10-28

Applicant: MEDIATEK INC.

Inventor： Yuh-Ren Jauh ,  Ching-Hwa Yu ,  James June-Ming Wang ,  Chao-Chun Wang

IPC: H04W74/08

CPC classification number: H04W74/0833 ,  H04L1/1607 ,  H04L5/0007 ,  H04W72/02 ,  H04W72/042

Abstract: A method of performing contention-based uplink OFDMA transmission is proposed in accordance with one novel aspect. A wireless communications station (an AP) reserves both dedicated resource and contention resource for uplink OFDMA operation for a list of communications devices (STAs). For contention-based random access, the AP does not need to collect traffic requests from the STAs. The AP only needs to make simple resource arrangement. The AP only needs to specify the allocated resource for random access and the uplink OFDMA operation duration and timing for each uplink OFDMA packet. Each STA having traffic request will contend the resource based on a random access probability scheme.

Abstract translation: 根据一个新颖的方面提出了执行基于竞争的上行链路OFDMA传输的方法。 无线通信站（AP）为通信设备（STA）列表的上行链路OFDMA操作保留专用资源和争用资源。 对于基于竞争的随机访问，AP不需要从STA收集流量请求。 AP只需要简单的资源安排。 AP仅需要为每个上行OFDMA分组指定分配的随机接入资源和上行OFDMA操作持续时间和定时。 具有业务请求的每个STA将基于随机接入概率方案来对资源进行竞争。

公开(公告)号：US20160105887A1

公开(公告)日：2016-04-14

申请号：US14512479

申请日：2014-10-13

Applicant: MEDIATEK INC.

Inventor： Chia-Hsiang Hsu ,  Ching-Hwa Yu ,  Li-Chun Ko

IPC: H04W72/04 ,  H04W52/02 ,  H04W74/08 ,  H04L5/00

CPC classification number: H04W52/0209 ,  H04L5/0078 ,  H04W16/14 ,  H04W72/12 ,  H04W74/0816 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146

Abstract: A method of managing data transmission for a receiving terminal of a first wireless system wherein the first wireless system coexists with at least one second wireless system includes receiving a transmission schedule of each of the at least one second wireless system; determining a usable time period for the first wireless system according to the transmission schedule of each of the at least one second wireless system; and sending a clear to send (CTS) to self signal or a power saving signal to indicate an interruption of the usable time period according to a length of the usable time period.

Abstract translation: 一种用于管理第一无线系统的接收终端的数据传输的方法，其中所述第一无线系统与至少一个第二无线系统共存包括接收所述至少一个第二无线系统中的每一个的传输调度; 根据所述至少一个第二无线系统中的每一个的传输调度确定所述第一无线系统的可用时间段; 并发送清除发送（CTS）到自身信号或省电信号，以根据可用时间段的长度指示可用时间段的中断。

公开(公告)号：US20160050691A1

公开(公告)日：2016-02-18

申请号：US14824393

申请日：2015-08-12

Applicant: MEDIATEK INC.

Inventor： Yuh-Ren Jauh ,  James June-Ming Wang ,  Chao-Chun Wang ,  Ching-Hwa Yu ,  Jianhan Liu

IPC: H04W74/08 ,  H04W48/08 ,  H04L12/26

CPC classification number: H04W74/0808 ,  H04W84/12

Abstract: Methods and apparatus are provided for clear channel assessment in the Wifi network. In one novel aspect, different clear channel assessment (CCA) threshold value is set for intra-BSS and inter-BSS frames during the counting down process. A CCA procedure senses the radio channel and determines if the radio channel is busy or idle during the backoff period by comparing the signal level value of detected fames with the CCA threshold value. The counting down will be suspended if the radio channel determined to be busy. If the detected frame is inter-BSS frame, the CCA threshold value is raised. If the signal level of the detected frames is lower than the inter-BSS CCA threshold for inter-BSS fames, the radio channel is considered idle. The counting down process is resumed.

Abstract translation: 提供方法和设备，用于在Wifi网络中进行清晰的信道评估。 在一个新颖的方面，在倒计时过程中为BSS内和BSS间帧设置不同的清除信道评估（CCA）阈值。 CCA过程检测无线电信道并且通过将检测到的信使的信号电平值与CCA阈值进行比较来确定在退避周期期间无线电信道是忙还是空闲。 无线电频道确定为忙时，倒计时将被暂停。 如果检测到的帧是BSS间帧，则CCA阈值增加。 如果所检测到的帧的信号电平低于用于BSS间信标的BSS间CCA阈值，则无线电信道被认为是空闲的。 倒计时过程恢复。

公开(公告)号：US20150373716A1

公开(公告)日：2015-12-24

申请号：US14742667

申请日：2015-06-17

Applicant: MEDIATEK INC.

Inventor： Shih-Chang Su ,  Ching-Hwa Yu

IPC: H04W72/04 ,  H04W4/00 ,  H04L5/00

CPC classification number: H04W4/80 ,  H04W74/0816 ,  H04W84/12

Abstract: A method of period allocation for a medium to be utilized by a first wireless communication device comprising at least one wireless local area network (WLAN) module includes while the first wireless communication device occupies the medium, detecting a termination period of a Network Allocation Vector (NAV) of the medium; and the first wireless communication device extending the termination period of the NAV of the medium if the termination period of the NAV is earlier than an expected period.

Abstract translation: 一种由包括至少一个无线局域网（WLAN）模块的第一无线通信设备利用的介质的周期分配方法包括：当第一无线通信设备占据介质时，检测网络分配向量的终​​止周期 NAV）; 并且如果所述资产净值的终止期比预期期间早，则所述第一无线通信装置延长所述介质的所述净资产值的终止期间。

公开(公告)号：US20190310341A1

公开(公告)日：2019-10-10

申请号：US16452387

申请日：2019-06-25

Applicant: MEDIATEK INC.

Inventor： James June-Ming Wang ,  Kai-Chun Chou ,  Ching-Hwa Yu ,  Hsuan-Yu Liu

IPC: G01S3/74 ,  G01S5/02 ,  G01S1/08 ,  G01S1/04 ,  G01S3/04

Abstract: A method of direction finding (DF) positioning based on a simplified antenna platform format in a wireless communication network is proposed. A receiver receives antenna platform format information of a transmitter having multiple antenna elements. The antenna platform format information comprises an antenna platform format indicator, antenna platform position and orientation information, a number of antenna elements, and switching delay, phase center, and polarization information for each antenna element. The receiver receives a plurality of direction finding sounding signals transmitted from the transmitter via the multiple antenna elements. The receiver performs a DF algorithm based on the plurality of DF sounding signals and the antenna platform format information and thereby estimating a DF solution. Finally, the receiver determines its own location information based on the estimated DF solution.

公开(公告)号：US20190029037A1

公开(公告)日：2019-01-24

申请号：US16127572

申请日：2018-09-11

Applicant: MEDIATEK INC.

Inventor： James June-Ming Wang ,  Ching-Hwa Yu ,  Yuh-Ren Jauh ,  Chih-Shi Yee

IPC: H04W74/00 ,  H04W72/04 ,  H04W74/08 ,  H04W74/06 ,  H04W56/00 ,  H04W72/12 ,  H04W84/12

CPC classification number: H04W74/004 ,  H04W56/0005 ,  H04W72/042 ,  H04W72/121 ,  H04W74/00 ,  H04W74/06 ,  H04W74/0833 ,  H04W84/12

Abstract: A method of STA-initiated uplink (UL) aggregation is proposed in a wireless communication system. Under the STA-initiated UL aggregation, an STA can gain access to the medium through contention and after winning the TXOP, it passes the TXOP ownership to its AP to allow it to trigger UL MU transmission. Thus, the AP has increased chance of utilizing the medium while maintains fairness to both legacy APs and STAs. In addition, once AP takes over ownership of the TXOP, if it detects idle secondary channels, it can enable UL aggregation over the idle secondary channels, thereby fully utilizing the entire system bandwidth.

公开(公告)号：US10104676B2

公开(公告)日：2018-10-16

申请号：US15145309

申请日：2016-05-03

Applicant: MEDIATEK INC.

Inventor： Yuh-Ren Jauh ,  Ching-Hwa Yu ,  Chao-Chun Wang

IPC: H04W72/10 ,  H04L5/00 ,  H04W72/04 ,  H04W74/08 ,  H04W28/06 ,  H04W88/08 ,  H04W84/12

Abstract: A method of performing OFDMA transmission with aggregation from multiple access categories to improve channel utilization of a wireless channel is proposed. In one novel aspect, data from multiple access categories are allowed to be aggregated and transmitted in the same packet to utilize idle time efficiently. In downlink OFDMA, AP can send different AC data to different STAs so that AP can better arrange the transmission resource block. If the resource for one STA has long enough idle time, AP can aggregate more data that is different to the current AC for the same STA to better utilize the resource. In UL OFDMA, different STAs can send different AC data to AP. If the resource for one STA has long enough idle time, the STA can aggregate more data that is different to the current AC to better utilize the resource.