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：US20180041940A1

公开(公告)日：2018-02-08

申请号：US15647283

申请日：2017-07-12

Applicant: MEDIATEK INC.

Inventor： I-Cheng Tsai ,  Chao-Chun Wang ,  Chih-Shi Yee ,  Yung-En Hsieh

IPC: H04W40/32 ,  H04W52/28 ,  H04W72/12

CPC classification number: H04W40/32 ,  H04L67/141 ,  H04L67/325 ,  H04W4/08 ,  H04W52/283 ,  H04W72/121 ,  H04W84/18

Abstract: A method of data communication for a communication device in a wireless ad hoc network is disclosed. The method comprises receiving a service publish message and a service subscribe message from a first communication device of a first service cluster and a second communication device of a second service cluster respectively, wherein the second communication device subscribes a service from the first communication device, and establishing a third service cluster including the first communication device and the second communication device, wherein a schedule of the third service cluster for the communication device, the first and second communication devices of the third service cluster to wake up for data transmission and reception is determined by the communication device or coordinated by the communication device, the first and the second communication devices.

公开(公告)号：US09780926B2

公开(公告)日：2017-10-03

申请号：US14833072

申请日：2015-08-22

Applicant: MEDIATEK INC.

Inventor： Yuh-Ren Jauh ,  Jianhan Liu ,  Chao-Chun Wang ,  James June-Ming Wang ,  Thomas Edward Pare, Jr.

IPC: H04W4/00 ,  H04L5/00 ,  H04B7/0452

CPC classification number: H04L5/0007 ,  H04B7/0452 ,  H04L5/0055

Abstract: Methods and apparatus are provided for burst OFDMA support MU-MIMO in the WLAN network. In one novel aspect, pluralities of user channels are configured for a downlink wideband channel, wherein each user channel is associated with a user group selecting from a SU-SISO, or a SU-MIMO or a MU-MIMO. In one embodiment, the SIG1 and SIG2 signaling fields are independent for each user channel. In another embodiment, the SIG1 fields are duplicates for all user channels carrying common information. The SIG2 fields for each user group are different from each other carrying user group specific information. In another novel aspect, an uplink OFDMA frames contains ACK packets from multiple STAs concurrently using an uplink wideband channel. In one embodiment, one ACK packet is sent for a MU-MIMO user group. In another embodiment, the uplink ACK packet assignment is based on indications in the downlink PHY SIG field.

公开(公告)号：US20170070962A1

公开(公告)日：2017-03-09

申请号：US15257074

申请日：2016-09-06

Applicant: MEDIATEK INC.

Inventor： James June-Ming Wang ,  Jianhan Liu ,  Chao-Chun Wang ,  YungPing Hsu

IPC: H04W52/24 ,  H04W16/02 ,  H04B17/345 ,  H04W74/08

CPC classification number: H04W52/243 ,  H04B17/345 ,  H04W16/02 ,  H04W52/146 ,  H04W52/241 ,  H04W52/242 ,  H04W52/245 ,  H04W52/247 ,  H04W52/50 ,  H04W74/0816 ,  H04W84/12

Abstract: A method of spatial reuse with opportunistic transmit power control (TPC) and clear channel assessment (CCA) is proposed. In the opportunistic TPC and CCA, a spatial reuse station (SR-STA) gains enough knowledge in certain situation for more aggressive spatial reuse such that its transmit power may be adjusted to meet the spatial reuse conditions based on the received OBSS PPDU and the corresponding spatial reuse parameter (SRP). Both Type 1 SRP and Type 2 SRP are defined. In one example, the Type 1 or Type 2 SRP is a 5-bit parameter carried in the HE-SIG-A field of the OBSS PPDU, which can be a trigger frame, a response frame, a request-to-send (RTS)/clear-to-send (CTS) frame, and a data frame.

Abstract translation: 提出了一种利用机会性发射功率控制（TPC）和清晰信道评估（CCA）进行空间重用的方法。 在机会主义TPC和CCA中，空间重用站（SR-STA）在某些情况下获得足够的知识以进行更积极的空间重用，使得其发射功率可以被调整以满足基于接收到的OBSS PPDU和对应的空间重用条件 空间复用参数（SRP）。 定义了Type 1 SRP和Type 2 SRP。 在一个示例中，类型1或类型2 SRP是OBSS PPDU的HE-SIG-A字段中携带的5位参数，其可以是触发帧，响应帧，请求发送（RTS ）/清除发送（CTS）帧和数据帧。

公开(公告)号：US20160374087A1

公开(公告)日：2016-12-22

申请号：US15181354

申请日：2016-06-13

Applicant: MEDIATEK INC.

Inventor： Jianhan Liu ,  RongSheng Huang ,  Li Ma ,  Chao-Chun Wang

IPC: H04W72/04 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04W72/0453 ,  H04L5/0007 ,  H04L27/2605 ,  H04W16/14 ,  H04W74/0808 ,  H04W84/12 ,  H04W88/02

Abstract: A unified channel contention scheme is proposed such that spatial reuse can be enabled by a wireless station (STA) when a basic service set (BSS) color of a received signal cannot be resolved. If the detected frame is an intra-BSS frame, then the STA should not contend the channel for the PPDU duration. If the detected frame is an inter-BSS frame, then the STA uses OBSS Packet Detection (OBSS-PD) level as the CCA level for channel contention. Furthermore, when BSS color cannot be resolved, channel contention schemes for WiFi signal and non-WiFi signal are differentiated. If the received signal is detected as WiFi signal, then the STA uses WiFi-SIG Detection (WD) level as the CCA level for channel contention. If the received signal is detected as non-WiFi signal, then the STA uses Non-WiFi-SIG Detection (NWD) level as the CCA level for channel contention.

Abstract translation: 提出了一种统一的信道争用方案，使得当接收信号的基本服务集（BSS）颜色不能被解析时，可以由无线站（STA）使能空间重用。 如果检测到的帧是BSS内帧，则STA不应该对该PPDU持续时间进行竞争。 如果检测到的帧是BSS间帧，则STA使用OBSS分组检测（OBSS-PD）级作为CCA级别进行信道争用。 此外，当BSS颜色不能解决时，WiFi信号和非WiFi信号的信道争用方案是有区别的。 如果接收到的信号被检测为WiFi信号，则STA使用WiFi-SIG检测（WD）级作为用于信道争用的CCA级别。 如果接收到的信号被检测为非WiFi信号，则STA使用非WiFi-SIG检测（NWD）级作为用于信道争用的CCA级别。

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：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：US20140130163A1

公开(公告)日：2014-05-08

申请号：US14033516

申请日：2013-09-22

Applicant: MEDIATEK INC.

Inventor： Shao-Wei Chen ,  Shun-Yong Huang ,  Chao-Chun Wang ,  Yu-Che Tsai

IPC: H04L29/06 ,  H04W12/12

CPC classification number: H04L63/1416 ,  H04L63/0236 ,  H04L67/14 ,  H04W12/12

Abstract: A method of setting a secure connection in a wireless communications system is disclosed. The method comprises setting a protocol information to a terminal; and checking a packet received in the terminal according to the protocol information; wherein the packet comprises a protocol type, a source port, and a destination port.

Abstract translation: 公开了一种在无线通信系统中设置安全连接的方法。 该方法包括：将协议信息设置到终端; 以及根据所述协议信息检查在所述终端中接收的分组; 其中所述分组包括协议类型，源端口和目的地端口。

公开(公告)号：US11019559B2

公开(公告)日：2021-05-25

申请号：US15372983

申请日：2016-12-08

Applicant: MEDIATEK INC.

Inventor： Tianyu Wu ,  Chao-Chun Wang ,  Chien-Fang Hsu ,  James June-Ming Wang ,  Jianhan Liu ,  Thomas Edward Pare, Jr.

IPC: H04W48/10 ,  H04W48/16 ,  H04W84/12 ,  H04W72/02

Abstract: A method of very high throughput (VHT) operation information subfields design for IEEE 802.11 WLAN is proposed. The VHT operation information subfields comprise a channel width, a channel center frequency segment 0 (CCFS0), and a channel center frequency segment 1 (CCFS1). Multiple definitions of the VHT operation information subfields have been adopted by different access points (AP)s and wireless stations (STAs). In accordance with one novel aspect, upon receiving the VHT operation information element broadcasted by an AP, an STA will first check the channel width indicated by the AP. The STA then follows different definitions under different channel widths. Under such method, the STA can support up to 160 MHz operation mode with APs following different definitions and operating up to 160 MHz mode.

公开(公告)号：US10484857B2

公开(公告)日：2019-11-19

申请号：US14915642

申请日：2015-08-13

Applicant: MEDIATEK INC.

Inventor： Yu-Che Tsai ,  Chao-Chun Wang

IPC: H04W8/00 ,  H04W4/02 ,  H04W52/02 ,  H04W76/10 ,  H04L29/08 ,  H04W88/18 ,  H04W76/14 ,  H04W84/12 ,  H04W4/80

Abstract: An access point (AP) accepts a communications device to join a wireless communications network. The AP registers a service provided by the communications device. The service is available in accordance with a schedule and a set of service parameters. The AP receives a request from a peer communications device seeking the service. The AP announces availability of the service on behalf of the communications device while the communications device is unavailable. The service is later provided by the communications device to the peer communications device when both devices are available to communicate. By utilizing an always-on AP to announce service availability and to exchange service parameters, fast service discovery can be achieved with low power consumption for both service advertisers and service seekers.