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1. 发明申请

US20130010632A1 Simultaneous Feedback Signaling for Dynamic Bandwidth Selection 有权
标题翻译：用于动态带宽选择的同步反馈信号
公开(公告)号：US20130010632A1
公开(公告)日：2013-01-10
申请号：US13635341
申请日：2011-10-20
申请人： James June-Ming Wang , Vishakan Ponnampalam , Jianhan Liu , Chao-Chun Wang , Huanchun Ye
发明人： James June-Ming Wang , Vishakan Ponnampalam , Jianhan Liu , Chao-Chun Wang , Huanchun Ye
IPC分类号： H04W24/10
CPC分类号： H04B17/309 , H04B17/24
摘要： A method of simultaneously providing channel quality feedback information in all valid sub-channels is provided to facilitate and improve the performance of dynamic transmission bandwidth adjustment and fast link adaptation. A receiving device receives a sounding signal over a wide channel in a wireless system. The sounding signal is transmitted from a transmitting device over multiple sub-channels of the wide channel. The receiving device estimates channel quality information based on the sounding signal for each sub-channel. The channel quality information includes estimated average SNR and recommended MCS and other channel quality metrics. The receiving device transmits a feedback message to the transmitting device. The feedback message contains the estimated channel quality information for all valid sub-channels within the transmission bandwidth. The transmitting device performs dynamic transmission bandwidth selection and fast link adaptation based on the channel quality information for all valid sub-channels.
摘要翻译：提供了一种在所有有效子信道中同时提供信道质量反馈信息的方法，以促进和改进动态传输带宽调整和快速链路自适应的性能。接收设备在无线系统中通过宽频道接收探测信号。探测信号通过宽信道的多个子信道从发送设备发送。接收装置基于每个子信道的探测信号来估计信道质量信息。信道质量信息包括估计的平均SNR和推荐的MCS等信道质量度量。接收装置向发送装置发送反馈消息。反馈消息包含传输带宽内所有有效子信道的估计信道质量信息。发送设备根据所有有效子信道的信道质量信息，执行动态传输带宽选择和快速链路自适应。

2. 发明申请

US20130058239A1 Integrity and Quality Monitoring and Signaling for Sounding and Reduced Feedback 审中-公开
标题翻译：完整性和质量监测和信号发声和减少反馈
公开(公告)号：US20130058239A1
公开(公告)日：2013-03-07
申请号：US13635360
申请日：2011-10-20
申请人： James June-Ming Wang , Jianhan Liu , Vishakan Ponnampalam , Chao-Chun Wang , Huanchun Ye
发明人： James June-Ming Wang , Jianhan Liu , Vishakan Ponnampalam , Chao-Chun Wang , Huanchun Ye
IPC分类号： H04W24/00
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。

3. 发明授权

US09258070B2 Simultaneous feedback signaling for dynamic bandwidth selection 有权
标题翻译：用于动态带宽选择的同步反馈信号
公开(公告)号：US09258070B2
公开(公告)日：2016-02-09
申请号：US13635341
申请日：2011-10-20
申请人： James June-Ming Wang , Vishakan Ponnampalam , Jianhan Liu , Chao-Chun Wang , Huanchun Ye
发明人： James June-Ming Wang , Vishakan Ponnampalam , Jianhan Liu , Chao-Chun Wang , Huanchun Ye
IPC分类号： H04W4/00 , H04B17/309 , H04B17/24
CPC分类号： H04B17/309 , H04B17/24
摘要： A method of simultaneously providing channel quality feedback information in all valid sub-channels is provided to facilitate and improve the performance of dynamic transmission bandwidth adjustment and fast link adaptation. A receiving device receives a sounding signal over a wide channel in a wireless system. The sounding signal is transmitted from a transmitting device over multiple sub-channels of the wide channel. The receiving device estimates channel quality information based on the sounding signal for each sub-channel. The channel quality information includes estimated average SNR and recommended MCS and other channel quality metrics. The receiving device transmits a feedback message to the transmitting device. The feedback message contains the estimated channel quality information for all valid sub-channels within the transmission bandwidth. The transmitting device performs dynamic transmission bandwidth selection and fast link adaptation based on the channel quality information for all valid sub-channels.
摘要翻译：提供了一种在所有有效子信道中同时提供信道质量反馈信息的方法，以促进和改进动态传输带宽调整和快速链路自适应的性能。接收设备在无线系统中通过宽频道接收探测信号。探测信号通过宽信道的多个子信道从发送设备发送。接收装置基于每个子信道的探测信号来估计信道质量信息。信道质量信息包括估计的平均SNR和推荐的MCS等信道质量度量。接收装置向发送装置发送反馈消息。反馈消息包含传输带宽内所有有效子信道的估计信道质量信息。发送设备根据所有有效子信道的信道质量信息，执行动态传输带宽选择和快速链路自适应。

4. 发明授权

US09572192B2 Method and system for supporting incompatible channelization of a wireless communications system 有权
标题翻译：支持无线通信系统不兼容信道化的方法和系统
公开(公告)号：US09572192B2
公开(公告)日：2017-02-14
申请号：US13635333
申请日：2011-10-18
申请人： Chao-Chun Wang , Jianhan Liu , Chih-Shi Yee , Huanchun Ye , James June-Ming Wang
发明人： Chao-Chun Wang , Jianhan Liu , Chih-Shi Yee , Huanchun Ye , James June-Ming Wang
IPC分类号： H04W76/04 , H04W28/18 , H04W48/08 , H04W72/00 , H04W76/02
CPC分类号： H04W76/20 , H04W28/18 , H04W48/08 , H04W72/00 , H04W72/0453 , H04W76/10 , H04W84/12
摘要： A method of supporting incompatible channelization in a wireless communications system is provided. A coordinating device determines a first set of physical parameters of a first wireless channel. The first set of physical parameters includes a channel bandwidth, a central frequency, a transmit power limit, and a modulation and coding scheme. The coordinating device establishes communication with a first set of communications devices over the first wireless channel. The coordinating device then broadcasts a channel-adjustment message and determines a protection period. The channel-adjustment message comprises a set of instructions on how to adjust to a second set of physical parameters of a second wireless channel. A second set of communications devices adjust physical parameters based on the channel-adjustment message. Finally, the coordinating device communicates with the second set of communications devices over the second wireless channel during the protection period.
摘要翻译：提供了一种在无线通信系统中支持不兼容信道化的方法。协调装置确定第一无线信道的第一组物理参数。第一组物理参数包括信道带宽，中心频率，发射功率限制以及调制和编码方案。协调设备通过第一无线信道与第一组通信设备建立通信。协调装置然后广播频道调整消息并确定保护期。信道调整消息包括关于如何调整到第二无线信道的第二组物理参数的一组指令。第二组通信设备根据信道调整消息调整物理参数。最后，协调装置在保护期间通过第二无线信道与第二组通信装置进行通信。

5. 发明申请

US20130195029A1 Method and System for Supporting Incompatible Channelization of a Wireless Communications System 有权
标题翻译：支持无线通信系统不兼容信道化的方法和系统
公开(公告)号：US20130195029A1
公开(公告)日：2013-08-01
申请号：US13635333
申请日：2011-10-18
申请人： Chao-Chun Wang , Jianhan Liu , Chih-Shi Yee , Huanchun Ye , James June-Ming Wang
发明人： Chao-Chun Wang , Jianhan Liu , Chih-Shi Yee , Huanchun Ye , James June-Ming Wang
IPC分类号： H04W76/04
CPC分类号： H04W76/20 , H04W28/18 , H04W48/08 , H04W72/00 , H04W72/0453 , H04W76/10 , H04W84/12
摘要： A method of supporting incompatible channelization in a wireless communications system is provided. A coordinating device determines a first set of physical parameters of a first wireless channel. The first set of physical parameters includes a channel bandwidth, a central frequency, a transmit power limit, and a modulation and coding scheme. The coordinating device establishes communication with a first set of communications devices over the first wireless channel. The coordinating device then broadcasts a channel-adjustment message and determines a protection period. The channel-adjustment message comprises a set of instructions on how to adjust to a second set of physical parameters of a second wireless channel. A second set of communications devices adjust physical parameters based on the channel-adjustment message. Finally, the coordinating device communicates with the second set of communications devices over the second wireless channel during the protection period.
摘要翻译：提供了一种在无线通信系统中支持不兼容信道化的方法。协调装置确定第一无线信道的第一组物理参数。第一组物理参数包括信道带宽，中心频率，发射功率限制以及调制和编码方案。协调设备通过第一无线信道与第一组通信设备建立通信。协调装置然后广播信道调整消息并确定保护期。信道调整消息包括关于如何调整到第二无线信道的第二组物理参数的一组指令。第二组通信设备根据信道调整消息调整物理参数。最后，协调装置在保护期间通过第二无线信道与第二组通信装置进行通信。

6. 发明授权

US08804559B2 Methods for monitoring channel sounding quality in WLAN devices 有权
标题翻译： WLAN设备监听通道音质的方法
公开(公告)号：US08804559B2
公开(公告)日：2014-08-12
申请号：US13373305
申请日：2011-11-10
申请人： Jianhan Liu , Vishakan Ponnampalam , James June-Ming Wang
发明人： Jianhan Liu , Vishakan Ponnampalam , James June-Ming Wang
IPC分类号： G06F11/00 , H04J1/16 , H04L1/00 , H04W24/00 , H04L12/26
CPC分类号： H04W24/00 , H04L1/0026 , H04L1/06 , H04L25/0208 , H04L43/50
摘要： A method of monitoring channel-sounding quality for VHT WiFi devices is provided. A mobile station (the receiver) receives a sounding signal transmitted from an access point (the transmitter) over one or multiple sub-channels of a wide channel in a wireless network. The receiver performs channel estimation and determines an estimated channel response matrix. The receiver then calculates sounding quality for each valid sub-channel by computing an estimation error of the received sounding signal based on the estimated channel matrix. The receiver transmits a feedback message to the transmitter. The feedback message contains sounding quality information derived from the calculated channel sounding quality. If the channel sounding qualities for all valid sub-channels are poor, then a null VHT channel feedback frame is sent back to the transmitter.
摘要翻译：提供了一种监测VHT WiFi设备的通道音质的方法。移动站（接收机）通过无线网络中的宽信道的一个或多个子信道接收从接入点（发射机）发送的探测信号。接收机执行信道估计并确定估计的信道响应矩阵。然后，接收机通过基于估计的信道矩阵计算接收到的探测信号的估计误差来计算每个有效子信道的探测质量。接收机向发射机发送反馈消息。反馈消息包含从计算的声道探测质量得到的探测质量信息。如果所有有效子信道的信道探测质量差，则将零VHT信道反馈帧发送回发射机。

7. 发明申请

US20120120839A1 Methods for monitoring channel sounding quality in WLAN devices 有权
标题翻译： WLAN设备监听通道音质的方法
公开(公告)号：US20120120839A1
公开(公告)日：2012-05-17
申请号：US13373305
申请日：2011-11-10
申请人： Jianhan Liu , Vishakan Ponnampalam , James June-Ming Wang
发明人： Jianhan Liu , Vishakan Ponnampalam , James June-Ming Wang
IPC分类号： H04W24/00
CPC分类号： H04W24/00 , H04L1/0026 , H04L1/06 , H04L25/0208 , H04L43/50
摘要： A method of monitoring channel-sounding quality for VHT WiFi devices is provided. A mobile station (the receiver) receives a sounding signal transmitted from an access point (the transmitter) over one or multiple sub-channels of a wide channel in a wireless network. The receiver performs channel estimation and determines an estimated channel response matrix. The receiver then calculates sounding quality for each valid sub-channel by computing an estimation error of the received sounding signal based on the estimated channel matrix. The receiver transmits a feedback message to the transmitter. The feedback message contains sounding quality information derived from the calculated channel sounding quality. If the channel sounding qualities for all valid sub-channels are poor, then a null VHT channel feedback frame is sent back to the transmitter.
摘要翻译：提供了一种监测VHT WiFi设备的通道音质的方法。移动站（接收机）通过无线网络中的宽信道的一个或多个子信道接收从接入点（发射机）发送的探测信号。接收机执行信道估计并确定估计的信道响应矩阵。然后，接收机通过基于估计的信道矩阵计算接收到的探测信号的估计误差来计算每个有效子信道的探测质量。接收机向发射机发送反馈消息。反馈消息包含从计算的声道探测质量得到的探测质量信息。如果所有有效子信道的信道探测质量差，则将零VHT信道反馈帧发送回发射机。

8. 发明授权

US09253767B2 PSMP-based downlink multi-user MIMO communications 有权
标题翻译：基于PSMP的下行多用户MIMO通信
公开(公告)号：US09253767B2
公开(公告)日：2016-02-02
申请号：US13583739
申请日：2011-09-08
申请人： James June-Ming Wang , Huanchun Ye
发明人： James June-Ming Wang , Huanchun Ye
IPC分类号： H04W72/04 , H04W52/02 , H04L5/00 , H04W28/26 , H04W48/16 , H04W52/28 , H04W72/12 , H04W84/12 , H04W88/08 , H04B7/04 , H04L25/02 , H04L25/03
CPC分类号： H04W72/042 , H04B7/0452 , H04L5/0023 , H04L5/0055 , H04L5/0094 , H04L25/0204 , H04L25/03891 , H04W28/26 , H04W48/16 , H04W52/0209 , H04W52/0219 , H04W52/287 , H04W72/1289 , H04W84/12 , H04W88/08 , Y02D70/1262 , Y02D70/142 , Y02D70/444
摘要： A scheduling-based downlink MU-MIMO mechanism is proposed in a wireless communication system. An access point transmits a first scheduling message to a plurality of stations. The first scheduling message reserves a first transmission burst for channel sounding. The AP then transmits a sounding signal and in response receives channel state information (CSI) from the plurality of stations. Based on the CSI, the AP performs MU-MIMO encoding and applies transmit beamforming (precoding). The AP transmits a second scheduling message that reserves a second transmission burst for MU-MIMO transmission. The AP then transmits downlink data streams to multiple stations simultaneously. Finally, the AP receives uplink acknowledgements from the stations. In one embodiment, the scheduling-based MU-MIMO is implemented using PSMP scheduling technique. PSMP-based downlink MU-MIMO allows both 802.11n and 802.11ac stations to process multiple spatial streams with reduced complexity, enhanced performance, and significant power saving.
摘要翻译：在无线通信系统中提出了基于调度的下行MU-MIMO机制。接入点向多个站发送第一调度消息。第一调度消息保留用于信道探测的第一传输突发。 AP然后发送探测信号，并且响应于从多个站接收信道状态信息（CSI）。基于CSI，AP执行MU-MIMO编码并应用发射波束成形（预编码）。 AP发送第二调度消息，其保留用于MU-MIMO传输的第二传输突发。然后，AP同时向多个站发送下行链路数据流。最后，AP从站接收上行确认。在一个实施例中，使用PSMP调度技术来实现基于调度的MU-MIMO。基于PSMP的下行链路MU-MIMO允许802.11n和802.11ac站能够以降低的复杂性，增强的性能和显着的功率节省来处理多个空间流。

9. 发明申请

US20170070893A1 DIRECTION FINDING POSITIONING IN WIRELESS LOCAL AREA NETWORKS 审中-公开
标题翻译：在无线局域网中寻找定位的方向
公开(公告)号：US20170070893A1
公开(公告)日：2017-03-09
申请号：US15121044
申请日：2015-02-24
申请人： James June-Ming Wang , Jianhan Liu , Thomas Edward Pare, JR. , Tianyu Wu , Gabor Bajko , Yung-Ping Hsu , MEDIATEK INC.
发明人： James June-Ming Wang , Jianhan Liu , Thomas Edward Pare Jr. , Tianyu Wu , Gabor Bajko , Yung-Ping Hsu
IPC分类号： H04W16/22 , H04L29/06 , H04B7/06 , H04L5/00
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 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。

10. 发明授权

US08902921B2 Methods for inter-user interference indication feedback and usage in MU-MIMO wireless systems 有权
标题翻译： MU-MIMO无线系统中用户间干扰指示反馈和使用的方法
公开(公告)号：US08902921B2
公开(公告)日：2014-12-02
申请号：US13587902
申请日：2012-08-16
申请人： Jianhan Liu , James June-Ming Wang , YungPing Hsu
发明人： Jianhan Liu , James June-Ming Wang , YungPing Hsu
IPC分类号： H04B7/212 , H04B7/04 , H04L25/02
CPC分类号： H04B7/0452 , H04L25/0204 , H04L25/0224
摘要： The present invention proposes methods for facilitating and improving the performance of MU-MIMO transmission in wireless communication systems. Each user within a MU group inserts an inter-user interference indication field in its acknowledgement packet. The inter-user interference indication field includes signal-to-interference-noise-ratio (SINR) and interference source information. The MU-MIMO transmitter extracts inter-user interference indication feedback and improves subsequent MU-MIMO transmission. Feedback of the inter-user interference information such as SINR and interference source allows efficient link adaptation, smarter user selection, channel re-sounding selection, and fine-tuning of precoding matrix.
摘要翻译：本发明提出了促进和改进无线通信系统中MU-MIMO传输性能的方法。 MU组内的每个用户在其确认分组中插入用户间干扰指示字段。用户间干扰指示字段包括信号与干扰噪声比（SINR）和干扰源信息。 MU-MIMO发射机提取用户间干扰指示反馈并改进随后的MU-MIMO传输。诸如SINR和干扰源之类的用户间干扰信息的反馈允许有效的链路自适应，更智能的用户选择，信道重新选择以及预编码矩阵的微调。

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