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    ENHANCED CHANNEL CONTENTION SCHEMES FOR HIGH-EFFICIENCY WLAN
    51.
    发明申请
    ENHANCED CHANNEL CONTENTION SCHEMES FOR HIGH-EFFICIENCY WLAN 审中-公开
    用于高效WLAN的增强通道连接方案

    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。

    METHOD AND ELECTRONIC APPARATUS FOR TRANSMITTING PACKET WITH CHANGEABLE SPREADING FACTOR
    52.
    发明申请
    METHOD AND ELECTRONIC APPARATUS FOR TRANSMITTING PACKET WITH CHANGEABLE SPREADING FACTOR 审中-公开
    用于发送具有可变扩展因子的分组的方法和电子装置

    公开(公告)号：US20160301445A1

    公开(公告)日：2016-10-13

    申请号：US15081968

    申请日：2016-03-28

    Applicant: MEDIATEK INC.

    Inventor： Jianhan Liu ,  Chien-Fang Hsu

    IPC: H04B1/7097

    CPC classification number: H04B1/707 ,  H04B2201/70703

    Abstract: The present invention provides a method and an electronic apparatus for transmitting a packet with changeable spreading factor. The method comprises: utilizing a spreading circuit to select a spreading factor from a plurality of spreading factors according to a transmitting condition to adjust a spreading for the packet; and transmitting the packet. The electronic apparatus comprises: a spreading circuit and a transmitting circuit. The spreading circuit is utilized for selecting a spreading factor from a plurality of spreading factors according to a transmitting condition to adjust the spreading for the packet. The transmitting circuit is coupled to the spreading circuit, and utilized for transmitting the packet.

    Abstract translation: 本发明提供一种用于发送具有可变扩频因子的分组的方法和电子装置。 该方法包括：利用扩展电路根据发送条件从多个扩频因子中选择扩展因子，以调整分组的扩展; 并发送分组。 电子装置包括：扩展电路和发送电路。 扩展电路用于根据发送条件从多个扩频因子中选择扩展因子，以调整分组的扩展。 发射电路耦合到扩展电路，用于发送分组。

    Method to Improve Channel Access Opportunity in a Wireless Communications System
    53.
    发明申请
    Method to Improve Channel Access Opportunity in a Wireless Communications System 审中-公开
    改善无线通信系统中频道接入机会的方法

    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。

    Efficient preamble design and modulation schemes for wake-up packets in WLAN with wake-up radio receivers
    54.
    发明授权
    Efficient preamble design and modulation schemes for wake-up packets in WLAN with wake-up radio receivers 有权

    公开(公告)号：US12207196B2

    公开(公告)日：2025-01-21

    申请号：US18220126

    申请日：2023-07-10

    Applicant: MEDIATEK INC.

    Inventor： Jianhan Liu ,  Po-Yuen Cheng ,  Thomas Edward Pare, Jr.

    IPC: H04W52/02 ,  H04L27/04 ,  H04W84/12

    Abstract: Systems and methods of transmitting and receiving a Wake-Up Radio (WUR) packet by using a simplified preamble structure that contains no training field. The preamble carries a signature sequence selected from a set of predefined sequences, each corresponding to a different data transmission rate. The preamble and the control information of the WUR packet are transmitted in the same rate as indicated by the selected sequence. Hence, a receiving WUR can determine the data transmission rate and locate the associated control information directly if a sequence that matches a predefined signature sequence is detected. The same sequence or in combination with an additional sequence in the preamble may also be used to indicate automatic gain control synchronization, packet type and other related information.

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