公开(公告)号：US20170347234A1

公开(公告)日：2017-11-30

申请号：US15470000

申请日：2017-03-27

Applicant: MediaTek Inc.

Inventor： Chuen-Shen Bernard Shung ,  Jianhan Liu ,  George Chien ,  YungPing Hsu ,  Yasantha Rajakarunanayake ,  Dingchung Jann ,  Tom Hsiou-Cheng Kao

IPC: H04W4/02 ,  H04W72/04 ,  G08B3/10 ,  H04W4/22 ,  H04L5/00 ,  H04W52/02 ,  H04W56/00 ,  H04W84/12

CPC classification number: H04W4/023 ,  G08B3/1008 ,  G08B21/0272 ,  G08B25/016 ,  H04L5/0055 ,  H04W4/90 ,  H04W52/0229 ,  H04W52/0264 ,  H04W52/0274 ,  H04W56/002 ,  H04W72/0453 ,  H04W84/12 ,  Y02D70/14 ,  Y02D70/142 ,  Y02D70/164 ,  Y02D70/20 ,  Y02D70/26

Abstract: An emergency mode is provided in a portable electronic device for locating a survivor in a disaster. The device includes a wireless antenna to transmit and receive wireless signals; a memory to store one or more identifiers; a user interface to receive a command that enables the emergency mode. The device also includes one or more processors, which, in response to the command, detect via the wireless receiver a predetermined identifier that matches a stored identifier identifying a sender of the predetermined identifier as a trusted node. When the predetermined identifier and a timing measurement frame are received from the trusted node, the device sends a response to the trusted node to indicate its presence.

公开(公告)号：US09749967B2

公开(公告)日：2017-08-29

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 ,  H04W52/50 ,  H04B17/345 ,  H04W16/02 ,  H04W74/08 ,  H04W52/14 ,  H04W84/12

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.

公开(公告)号：US09565516B2

公开(公告)日：2017-02-07

申请号：US14848108

申请日：2015-09-08

Applicant: MEDIATEK INC.

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

IPC: H04W4/00 ,  H04W28/22 ,  H04W28/02 ,  H04L12/825

CPC classification number: H04W4/008 ,  H04L47/26 ,  H04W4/80 ,  H04W28/0236 ,  H04W28/22

Abstract: A method of fast link adaptation for Bluetooth long-range wireless networks is provided. A novel rate indication (RI) field is incorporated in a data packet to enable auto detection of rate adaptation at the receiver side. The data packet comprises a preamble, a first packet portion including the RI field, and a second packet portion including the PDU. The first packet portion is encoded with a first rate while the second packet portion is encoded with a second rate indicated by the RI field. The transmitting device raise/lower the encoding rate when the link quality is good/poor. The receiving device can provide recommended rate or link quality feedback information via an LMP message to help the transmitting device making rate adaptation decision. The transmitter can unilaterally decide the data rate for the second packet portion without receiver recommendation.

Abstract translation: 提供了一种用于蓝牙远程无线网络的快速链路适配方法。 新的速率指示（RI）字段被并入数据分组中，以便能够在接收机侧自动检测速率自适应。 数据分组包括前导码，包括RI字段的第一分组部分和包括该PDU的第二分组部分。 第一分组部分以第一速率编码，而第二分组部分由RI字段指示的第二速率编码。 当链路质量好/差时，发送设备提高/降低编码率。 接收设备可以通过LMP消息提供推荐的速率或链路质量反馈信息，以帮助发送设备进行速率适配决策。 发射机可以在没有接收机推荐的情况下单方面地决定第二分组部分的数据速率。