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11. 发明申请

WO2014090179A1 METHOD FOR DYNAMICALLY ADJUSTING CHANNEL BANDWIDTH IN WIRELESS COMMUNICATIONS SYSTEMS 审中-公开
标题翻译：在无线通信系统中动态调整通道带宽的方法
公开(公告)号：WO2014090179A1
公开(公告)日：2014-06-19
申请号：PCT/CN2013/089243
申请日：2013-12-12
申请人： MEDIATEK SINGAPORE PTE. LTD. , WANG, Chao-Chun , YEE, Chih-Shi , LIU, Jianhan
发明人： WANG, Chao-Chun , YEE, Chih-Shi , LIU, Jianhan
IPC分类号： H04W28/20
CPC分类号： H04W28/20 , H04L1/1614 , H04L5/0055 , H04W72/0453 , H04W84/12
摘要： A method of reducing the usable channel bandwidth and increasing the channel bandwidth at run time is provided. The method allows a receiving wireless communications device to inform its corresponding transmitting communications device to either increase, reduce, or maintain the number of usable narrow band channels for the succeeding frame exchange. In a wireless communications channel, channel reduction is accomplished by using a usable channel indicator in a response frame responding to the preceding receiving frame. The usable channel indicator is the means for the receiving communications device to inform the transmitting communications device the preferred narrow band channels that it deems having good channel characteristics.
摘要翻译：提供了一种在运行时减少可用信道带宽和增加信道带宽的方法。该方法允许接收无线通信设备通知其相应的发送通信设备来增加，减少或维持用于后续帧交换的可用窄带信道的数量。在无线通信信道中，通过在响应于先前接收帧的响应帧中使用可用信道指示符来实现信道减少。可用信道指示符是用于接收通信设备向发送通信设备通知其认为具有良好信道特性的优选窄带信道的装置。

12. 发明申请

WO2012054694A1 INTEGRITY AND QUALITY MONITORING AND SIGNALING FOR SOUNDING AND REDUCED FEEDBACK 审中-公开
标题翻译：完整和质量监测和信号的声音和减少的反馈
公开(公告)号：WO2012054694A1
公开(公告)日：2012-04-26
申请号：PCT/US2011/057034
申请日：2011-10-20
申请人： MEDIATEK SINGAPORE PTE. LTD. , WANG, James, June-ming , LIU, Jianhan , PONNAMPALAM, Vishakan , WANG, Chao-chun , YE, Huanchun
发明人： WANG, James, June-ming , LIU, Jianhan , PONNAMPALAM, Vishakan , WANG, Chao-chun , YE, Huanchun
IPC分类号： H04B17/00
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0617 , H04B7/063 , H04B7/0632 , H04B7/065 , H04B7/0658 , H04L1/0026 , H04L1/0028 , H04L25/0226 , H04L25/0228
摘要： A method of sounding and feedback with channel quality information and reduced overhead is provided. A receiving station receives a sounding signal transmitted from an access point over multiple sub-channels of a wide channel in a wireless network. The receiving station detects channel quality based on the received sounding signal for each sub-channel. The receiving station then performs channel estimation based on the received sounding signal and thereby determining feedback information. Finally, the receiving station transmits a feedback message to the access point, the feedback message contains NULL feedback information, reduced feedback information, or channel integrity/quality indicators based on the channel quality information for each sub-channel. Based on the feedback message, the access point may repeat the sounding process, narrow the transmission bandwidth, or select only stations who have indicated uncorrupted channel sounding for MU-MMO transmission.
摘要翻译：提供了一种利用信道质量信息和降低开销的声音和反馈方法。接收站通过无线网络中的宽信道的多个子信道接收从接入点发送的探测信号。接收站基于接收到的每个子信道的探测信号来检测信道质量。然后，接收站基于接收的探测信号进行信道估计，从而确定反馈信息。最后，接收站向接入点发送反馈消息，反馈消息基于每个子信道的信道质量信息包含NULL反馈信息，减少的反馈信息或信道完整性/质量指示符。基于反馈消息，接入点可以重复发声过程，缩小传输带宽，或仅选择指示MU-MMO传输不通道信道探测的台。

13. 发明申请

WO2015120488A1 METHOD FOR IDENTIFYING SOURCE BSS IN WLAN 审中-公开
标题翻译： WLAN中识别源BSS的方法
公开(公告)号：WO2015120488A1
公开(公告)日：2015-08-13
申请号：PCT/US2015/015293
申请日：2015-02-10
申请人： MEDIATEK INC. , LIU, Jianhan , WU, Tianyu , PARE JR., Thomas Edward
发明人： LIU, Jianhan , WU, Tianyu , PARE JR., Thomas Edward
IPC分类号： H04W72/04
CPC分类号： H04W8/26 , H04L47/32 , H04W16/10 , H04W48/16 , H04W84/12
摘要： A method for identifying source BSS in WLAN is proposed. A high efficiency (HE) access point (AP) sends a packet containing a basic service set (BSS) color to a HE station. The HE AP also sends a packet containing an assigned association identification (AID) to a very high throughput (VHT) station. The assigned AID comprises at least part of the BSS color information. The VHT station therefore sends a packet containing the at least part of the BSS color information such that any AP or station that receives the packet can determine the BSS the VHT station is in.
摘要翻译：提出了一种识别WLAN中源BSS的方法。高效（HE）接入点（AP）向HE站发送包含基本服务集（BSS）颜色的分组。 HE AP还将包含分配的关联标识（AID）的分组发送到非常高吞吐量（VHT）站。分配的AID包括BSS颜色信息的至少一部分。因此，VHT站发送包含BSS颜色信息的至少一部分的分组，使得接收分组的任何AP或站可以确定VHT站所在的BSS。

14. 发明申请

WO2019137419A1 NULL DATA PACKET SOUNDING FOR PREAMBLE PUNCTURE TECHNIQUES 审中-公开
公开(公告)号：WO2019137419A1
公开(公告)日：2019-07-18
申请号：PCT/CN2019/071131
申请日：2019-01-10
申请人： MEDIATEK SINGAPORE PTE. LTD. , LIU, Jianhan
发明人： LIU, Jianhan , SEOK, Yongho , WANG, Chao-Chun , YEE, James Chih-Shi
IPC分类号： H04B7/00
摘要： A wireless network beamforming method comprising :encoding a preamble punctured Null Data Packet Announcement (NDPA); encoding a preamble punctured Null Data Packet (NDP);wherein the preamble punctured NDPAincludes a preamble puncture mode indicator;transmitting a preamble punctured PPDU including the preamble punctured NDPA and the preamble punctured NDP on the primary channel and the secondary channel; receiving aPPDU carrying a compressed beamforming feedback frame, wherein the compressed beamforming feedback frame contains a plurality of beamforming feedbacks of which each is obtained from a contiguous Resource unit.

15. 发明申请

WO2015009878A1 WIDE BANDWIDTH FAVORED CHANNEL ACCESS METHODS IN WIRELESS LOCAL AREA NETWORKS 审中-公开
标题翻译：无线本地区网络中宽带宽频道接入方式
公开(公告)号：WO2015009878A1
公开(公告)日：2015-01-22
申请号：PCT/US2014/046928
申请日：2014-07-16
申请人： MEDIATEK SINGAPORE PTE. LTD. , LIU, Jianhan , WANG, James June-Ming
发明人： LIU, Jianhan , WANG, James June-Ming
IPC分类号： H04W74/08
CPC分类号： H04W74/08 , H04W74/0808 , H04W84/12
摘要： A method to improve channel access opportunity for wide bandwidth transmission in wireless local area networks is proposed. The method allows different clear channel assessment (CCA) thresholds for different transmission channel bandwidth. During a primary channel CCA process, a low CCA threshold level is applied for an intended narrow transmission channel bandwidth, while a high CCA threshold level is applied for an indented wide transmission channel bandwidth. In addition to the "all bandwidth transmission branch" that is based on the low CCA level, the "wide bandwidth transmission branch" is based on the high CCA level, which increases the opportunity for channel access by raising the CCA levels based on intended transmission channel bandwidths. As a result, the likelihood of wide channel transmission is increased.
摘要翻译：提出了一种改善无线局域网宽带传输的信道接入机会的方法。该方法允许不同传输信道带宽的不同的清除信道评估（CCA）阈值。在主信道CCA处理期间，对于预期的窄传输信道带宽应用低CCA阈值电平，而对于缩进的宽传输信道带宽应用高CCA阈值电平。除了基于低CCA级别的“全带宽传输分支”之外，“宽带宽传输分支”是基于高CCA级别，其通过基于预期传输提高CCA级别来增加信道接入的机会通道带宽。结果，增加了信道传输的可能性。

16. 发明申请

WO2019149272A1 GROUP-BASED UNEQUAL MCS SCHEMES FOR A SINGLE USER STATION IN WLAN TRANSMISSIONS 审中-公开
公开(公告)号：WO2019149272A1
公开(公告)日：2019-08-08
申请号：PCT/CN2019/074434
申请日：2019-02-01
申请人： MEDIATEK SINGAPORE PTE. LTD. , LIU, Jianhan
发明人： LIU, Jianhan , HU, Shengquan , SEOK, Yongho , PARE JR., Thomas Edward , HSU, YungPing
IPC分类号： H04L29/08
摘要： Systems and methods of transmitting a PPDU to or from a single user station (STA) in an MIMO transmission by using unequal MCSs. An access point (AP) allocates a plurality of spatial streams to the STA and assigned them into groups for the MIMO transmission. Multiple unequal MCSs are assigned to the different spatial stream groups. Correspondingly the STA ID is repeatedly specified in the user block fields of a SIG-B field of a downlink PPDU, or in the user information fields of a trigger frame. Alternatively, multiple AIDs of the STA can be specified in the user block fields or the user information fields instead of repeating the same STA ID. An indication may be inserted in the SIG-A field to indicate that the grouped-based unequal MCSs scheme is used for the MIMO transmission.

17. 发明申请

WO2012125511A2 FAST LINK ADAPTATION AND TRANSMIT POWER CONTROL IN WIRELESS NETWORKS 审中-公开
标题翻译：无线网络中的快速链路适配和发射功率控制
公开(公告)号：WO2012125511A2
公开(公告)日：2012-09-20
申请号：PCT/US2012/028662
申请日：2012-03-10
申请人： MEDIATEK SINGAPORE PTE. LTD. , LIU, Jianhan , WANG, James , YE, Huanhun , HSU, Yungping
发明人： LIU, Jianhan , WANG, James , YE, Huanhun , HSU, Yungping
IPC分类号： H04W52/10 , H04W24/10 , H04W52/02
CPC分类号： H04W52/0212 , H04L1/0025 , H04L1/0036 , H04W24/10 , H04W52/0229 , H04W52/0245 , H04W52/262 , H04W84/12 , Y02D70/144
摘要： An open-loop fast link adaptation scheme is proposed in an OFDM system. An access point first transmits a downlink packet comprising an open-loop link metric to a wireless station. The open-loop link metric contains a transmit power of the downlink packet plus a receiver sensitivity of the access point. The wireless station measures a received signal strength indication (RSSI) value of the downlink packet. The wireless station then applies open-loop link adaptation and determines a modulation and coding scheme (MCS) based on the open-loop link metric and the RSSI value. The open-loop link adaptation scheme is especially suitable for smart meter/sensor networks as it reduces overhead and increases link capacity.
摘要翻译：在OFDM系统中提出了开环快速链路自适应方案。接入点首先将包括开环链路度量的下行链路分组发送到无线站。开环链路度量包含下行链路分组的发射功率加上接入点的接收机灵敏度。无线站测量下行链路分组的接收信号强度指示（RSSI）值。无线站然后应用开环链路自适应，并且基于开环链路度量和RSSI值来确定调制和编码方案（MCS）。开环链路自适应方案特别适用于智能电表/传感器网络，因为它减少了开销并增加了链路容量。

18. 发明申请

WO2016003370A1 MANY TO ONE COMMUNICATIONS PROTOCOL 审中-公开
标题翻译：多达一个通信协议
公开(公告)号：WO2016003370A1
公开(公告)日：2016-01-07
申请号：PCT/SG2015/050194
申请日：2015-07-01
申请人： MEDIATEK SINGAPORE PTE. LTD.
发明人： WANG, Chao-chun , LIU, Jianhan , WU, Tianyu , HUANG, Rongsheng
IPC分类号： H04W74/00 , H04W74/08 , H04W72/04
CPC分类号： H04L5/0073 , H04B7/0452 , H04L5/0023 , H04W74/0816
摘要： Methods and apparatus are provided for a many to one communication protocol. In one novel aspect, a modified CTS is sent by a receiving wireless communications station in response to a regular RTS. The modified CTS includes an indication for an uplink MU operation. In one embodiment, a modified CTS indicates a restricted access window (RAW) followed by RAW parameter set (RPS). In one embodiment, a subset of wireless communications devices associated with the receiving wireless communications station sends modified PS-poll with uplink data indication. Such PS-poll traffic is protected from passerby wireless communications devices from an OBSS. The receiving wireless communications station sends a modified resource-allocation map frame followed by a regular CTS frame. The subsets of wireless communications devices send their uplink data based on the received resource allocation map. The RTS-originating wireless station either sends its data frame earlier or concurrently with other wireless communications devices.
摘要翻译：为多个通信协议提供了方法和装置。在一个新颖的方面，响应于常规RTS，接收无线通信站发送修改的CTS。经修改的CTS包括用于上行链路MU操作的指示。在一个实施例中，修改的CTS指示受限访问窗口（RAW），其后跟RAW参数集（RPS）。在一个实施例中，与接收无线通信站相关联的无线通信设备的子集通过上行链路数据指示发送修改的PS-poll。通过无线通信设备从OBSS保护这种PS-poll流量。接收无线通信站发送经修改的资源分配映射帧，后跟正常CTS帧。无线通信设备的子集基于接收的资源分配图发送其上行数据。 RTS发起的无线站可以较早地或与其他无线通信设备同时发送其数据帧。

19. 发明申请

WO2015195050A1 CSI FEEDBACK MODES AND INDICATION FOR SUB CHANNEL FEEDBACK IN OFDMA SYSTEMS 审中-公开
标题翻译： OFDMA系统中的子信道反馈的CSI反馈模式和指示
公开(公告)号：WO2015195050A1
公开(公告)日：2015-12-23
申请号：PCT/SG2015/050168
申请日：2015-06-18
申请人： MEDIATEK SINGAPORE PTE. LTD.
发明人： WU, Tianyu , LIU, Jianhan , PARE JR., Thomas Edward
IPC分类号： H04L27/26
CPC分类号： H04L5/0057 , H04B17/24 , H04L5/0007 , H04L5/0023 , H04L5/0048
摘要： A method of indicating feedback mode and providing corresponding sub-channel feedback in OFDMA systems is provided. A transmitting device transmits a sounding announcement frame and a sounding signal to a receiving device. The sounding signal is transmitted over multiple sub-channels of a wide channel. The transmitting device also provides a feedback mode indication. The receiving device estimates channel quality information based on the received sounding signal and the feedback mode indication. The receiving device then sends feedback information to the transmitting device. The feedback information contains the estimated channel quality information of a selected set of sub-channels based on the feedback mode indication.
摘要翻译：提供了一种在OFDMA系统中指示反馈模式并提供相应的子信道反馈的方法。发送装置将发声通知帧和探测信号发送到接收装置。探测信号通过宽通道的多个子通道传输。发送设备还提供反馈模式指示。接收装置基于接收到的探测信号和反馈模式指示来估计信道质量信息。然后，接收装置向发送装置发送反馈信息。反馈信息基于反馈模式指示包含所选择的一组子信道的估计信道质量信息。

20. 发明申请

WO2014011117A1 SECTORIZED BEAM OPERATION FOR WIRELESS NETWORKS 审中-公开
标题翻译：无线网络的分段光束操作
公开(公告)号：WO2014011117A1
公开(公告)日：2014-01-16
申请号：PCT/SG2013/000289
申请日：2013-07-10
申请人： MEDIATEK SINGAPORE PTE. LTD.
发明人： WANG, James , LIU, Jianhan , HSU, Yung-Ping , YEE, Chi-Shi , WANG, Chao-Chun , PONNAMPALAM, Vishakan
IPC分类号： H04B7/04
CPC分类号： H04B7/0408 , H04B7/0495 , H04B7/0695 , H04W16/28
摘要： A communication method for a wireless network is disclosed. The wireless network comprises a plurality of wireless devices. The method comprises transmitting one or multiple packets with an omni-beam by a first wireless device to a second wireless device in a packet exchange during an omni-beam duration to indicate a sectorized-beam duration, receiving the packet(s) by a third wireless device, transmitting/receiving data by the first wireless device using a sectorized beam in a packet exchange with the second wireless device during the sectorized beam duration, and detecting by the third wireless device the sectorized beam packet(s) from the first wireless device and packet(s) from the second wireless device, if no sectorized beam packet(s)from the first wireless device and packet(s) from the second wireless device is detected, the third wireless device starting to communicating with a fourth wireless device.
摘要翻译：公开了一种无线网络的通信方法。无线网络包括多个无线设备。该方法包括在全波束持续时间期间，在分组交换中将第一无线设备的全波束的一个或多个分组发射到第二无线设备，以指示扇区化波束持续时间，接收到分组无线设备，在扇区化波束持续时间期间使用与第二无线设备的分组交换中的扇区化波束由第一无线设备发送/接收数据，以及由第三无线设备检测来自第一无线设备的扇区化波束分组和来自第二无线设备的分组，如果没有检测到来自第一无线设备的分组波束分组和来自第二无线设备的分组，则第三无线设备开始与第四无线设备进行通信。

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