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1.
公开(公告)号:WO2015130712A1
公开(公告)日:2015-09-03
申请号:PCT/US2015/017391
申请日:2015-02-24
申请人: MEDIATEK INC. , WANG, James June-Ming , LIU, Jianhan , PARE JR., Thomas Edward , WU, Tianyu , BAJKO, Gabor , HSU, Yung-Ping
发明人: WANG, James June-Ming , LIU, Jianhan , PARE JR., Thomas Edward , WU, Tianyu , BAJKO, Gabor , HSU, Yung-Ping
IPC分类号: H04W64/00
CPC分类号: H04W16/225 , G01S3/14 , G01S3/74 , G01S5/0252 , G01S5/06 , G01S5/12 , G01S13/825 , H04B7/0617 , H04B17/318 , H04L5/0048 , H04L5/005 , H04L69/22 , H04W4/02 , H04W4/023 , H04W4/043 , H04W24/10 , H04W64/00 , H04W84/12
摘要: A method of combined direction finding (DF) and fine timing measurement (FTM) positioning in a wireless location area network (WLAN) is proposed. A multiple antenna IEEE 802.11 transmitting device (AP) can transmit signal preamble containing multiple Long Training Field (LTF) symbols in a radio frame from multiple antennas, which allows a receiving device (STA) to resolve multiple DF sounding signals transmitted from the multiple antennas and thereby estimating angle of departure (AoD). On the other hand, the AP can estimate angle of arrival (AoA) from radio signals transmitted from the STA. When the radial resolution error of AoD or AoA positioning increases, DF positioning and fine-timing measurement (FTM) ranging can be jointly applied to reduce the radial resolution error and extends the AoD/AoA service area with positing accuracy.
摘要翻译: 提出了一种在无线定位区域网络(WLAN)中组合方向搜索(DF)和精确定时测量(FTM)定位的方法。 多天线IEEE 802.11发射设备(AP)可以在来自多个天线的无线帧中发送包含多个长训练场(LTF)符号的信号前导码,这允许接收设备(STA)解析从多个天线发送的多个DF探测信号 从而估计出发角度(AoD)。 另一方面,AP可以从STA发送的无线电信号估计到达角(AoA)。 当AoD或AoA定位的径向分辨率误差增大时,可以共同应用DF定位和精确定时测量(FTM)测距,以减小径向分辨率误差,并以准确的精度扩展AoD / AoA服务区域。
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2.
公开(公告)号:WO2016029876A1
公开(公告)日:2016-03-03
申请号:PCT/CN2015/088399
申请日:2015-08-28
申请人: MEDIATEK INC.
IPC分类号: H04W74/08
CPC分类号: H04L5/006 , H04L1/0003 , H04W28/06 , H04W28/18 , H04W48/16 , H04W74/00 , H04W74/0808 , H04W84/12 , Y02D70/00 , Y02D70/142
摘要: A spatial reuse prioritized channel access scheme is proposed to enhance the average throughput per station in a wireless network by optimizing spatial reuse. Spatial reuse capability (SRC) is defined as a monotonically decreasing function of co-channel interference signal strength from OBSSs. Higher spatial reuse capability can be transformed into higher data rate or less usage of airtime by using higher MCS or less interferences to OBSSs by reducing TX power. By allowing the stations that have larger spatial reuse capability to have higher probability to win channel access contention, the overall network throughput is enhanced.
摘要翻译: 提出了空间重用优先级信道接入方案,通过优化空间重用来提高无线网络中每个站的平均吞吐量。 空间复用能力(SRC)被定义为来自OBSS的同信道干扰信号强度的单调递减函数。 通过降低TX功率,可以通过使用更高的MCS或更少的OBSS干扰来将更高的空间重用能力转换为更高的数据速率或更少的通话时间的使用。 通过允许具有较大空间重用能力的站点具有较高的赢得频道接入争用的概率,增强了整体网络吞吐量。
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公开(公告)号:WO2016029874A1
公开(公告)日:2016-03-03
申请号:PCT/CN2015/088374
申请日:2015-08-28
申请人: MEDIATEK INC.
IPC分类号: H04L5/00
CPC分类号: H04L65/60 , H04B7/0452 , H04B7/0689 , H04L1/0004 , H04L1/0009 , H04L5/0023 , H04L5/0046 , H04L5/0091 , H04L27/0008 , H04L27/2602
摘要: A method of providing a configurable signaling (SIG) field is proposed to reduce the SIG overhead of a data packet in a wireless network. The SIG field comprises both HE-SIG-A field and HE-SIG-A2 field. HE-SIG-A field contains only necessary information for a default network scenario (e.g., indoor non-OFDMA SU-MIMO) to avoid HE-SIG-A2. HE-SIG-A2 field contains OFDMA, MU-MIMO, and/or outdoor parameter settings. By using HE-SIG-A to indicate the existence, mode, and/or length of HE-SIG-A2, the signaling overhead for default scenario can be reduced by avoiding the entire HE-SIG-A2 field. The number of symbols required for HE-SIG-A2 is adjustable based on each transmission scenario and indicated by HE-SIG-A. Further, because higher MCS such as QPSK may be supported for HE-SIG-A2, additional signaling overhead is reduced.
摘要翻译: 提出了一种提供可配置信令(SIG)字段的方法,以减少无线网络中的数据分组的SIG开销。 SIG字段包括HE-SIG-A字段和HE-SIG-A2字段。 HE-SIG-A字段仅包含用于避免HE-SIG-A2的默认网络场景(例如,室内非OFDMA SU-MIMO)的必要信息。 HE-SIG-A2字段包含OFDMA,MU-MIMO和/或户外参数设置。 通过使用HE-SIG-A来表示HE-SIG-A2的存在,模式和/或长度,通过避免整个HE-SIG-A2字段,可以减少默认情况的信令开销。 HE-SIG-A2所需的符号数量可根据每种传输情况进行调整,并由HE-SIG-A指示。 此外,由于HE-SIG-A2可以支持诸如QPSK的更高的MCS,所以额外的信令开销降低。
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公开(公告)号:WO2015130618A2
公开(公告)日:2015-09-03
申请号:PCT/US2015/017174
申请日:2015-02-24
申请人: MEDIATEK INC. , WANG, James June-Ming , LIU, Jianhan , PARE JR., Thomas Edward , WU, Tianyu , BAJKO, Gabor , HSU, Yung-Ping
发明人: WANG, James June-Ming , LIU, Jianhan , PARE JR., Thomas Edward , WU, Tianyu , BAJKO, Gabor , HSU, Yung-Ping
IPC分类号: H04W72/04
CPC分类号: H04W16/225 , G01S3/14 , G01S3/74 , G01S5/0252 , G01S5/06 , G01S5/12 , G01S13/825 , H04B7/0617 , H04B17/318 , H04L5/0048 , H04L5/005 , H04L69/22 , H04W4/02 , H04W4/023 , H04W4/043 , H04W24/10 , H04W64/00 , H04W84/12
摘要: A method of direction finding (DF) positioning in a wireless location area network (WLAN) is proposed. A multiple antenna IEEE 802.11 transmitting device can transmit signal preamble containing multiple Long Training Field (LTF) symbols in a radio frame from multiple antennas simultaneously, which allows a receiving device to resolve multiple DF sounding signals transmitted from the multiple antennas. As a result, angle of departure (AoD) of the transmitting device can be estimated by using the multiple resolved DF sounding signals from each antenna for DF positioning purpose.
摘要翻译: 提出了一种在无线定位区域网络(WLAN)中的方向搜索(DF)定位的方法。 多天线IEEE 802.11发射设备可以同时在多个天线的无线帧中发送包含多个长训练场(LTF)符号的信号前导码,这允许接收设备解析从多个天线发送的多个DF探测信号。 结果,可以通过使用来自每个天线的多个分辨的DF探测信号来估计发射装置的出发角(AoD),用于DF定位目的。
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公开(公告)号:WO2015134553A1
公开(公告)日:2015-09-11
申请号:PCT/US2015/018558
申请日:2015-03-04
申请人: MEDIATEK INC. , WU, Tianyu , LIU, Jianhan , ULN, Kiran , PARE, Thomas Edward Jr.
发明人: WU, Tianyu , LIU, Jianhan , ULN, Kiran , PARE, Thomas Edward Jr.
IPC分类号: H04W40/12
CPC分类号: H04L5/0057 , H04B7/0417 , H04B7/0452 , H04B7/0623 , H04B7/0626 , H04B7/0632 , H04B17/24 , H04B17/336 , H04L1/1671 , H04L1/1685 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04W72/0446 , H04W72/082
摘要: A method of sub-channel feedback in OFDMA systems is provided. A wireless receiving device (STA) receives a radio signal from a transmitting device (AP) over a wide channel in an OFDMA system. The radio signal is transmitted over multiple sub-channels of the wide channel. The STA estimates channel quality information based on the received radio signal for each sub-channel. The STA then sends feedback information to the transmitting device. The feedback information comprises the estimated channel quality information for a selected subset of sub-channels from the wide channel based on a predefined rule. In one embodiment, the feedback information is embedded within an ACK/BA frame or is carried in a frame immediately subsequent to the ACK/BA frame.
摘要翻译: 提供OFDMA系统中子信道反馈的方法。 无线接收设备(STA)通过OFDMA系统中的宽信道从发射设备(AP)接收无线电信号。 无线电信号通过宽信道的多个子信道发送。 STA基于每个子信道的接收到的无线电信号来估计信道质量信息。 然后,STA向发送设备发送反馈信息。 基于预定义规则,反馈信息包括来自宽信道的子信道的选定子集的估计信道质量信息。 在一个实施例中,反馈信息被嵌入到ACK / BA帧内,或者紧接在ACK / BA帧之后的帧中被携带。
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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
IPC分类号: H04W72/04
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。
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