公开(公告)号：US20120263055A1

公开(公告)日：2012-10-18

申请号：US13417235

申请日：2012-03-10

申请人： Jianhan Liu ,  James Wang ,  Huanchun Ye ,  YungPing Hsu

发明人： Jianhan Liu ,  James Wang ,  Huanchun Ye ,  YungPing Hsu

IPC分类号： H04W52/10 ,  H04W52/02 ,  H04W24/10

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。 然后，无线站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。

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。

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。

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。

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。

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。

公开(公告)号：US20110310741A1

公开(公告)日：2011-12-22

申请号：US13218940

申请日：2011-08-26

申请人： Li-Chun Ko ,  Hong-Kai Hsu ,  I-Lin Hsieh ,  Jwo-An Lin ,  I-Kang Fu ,  Huanchun Ye

发明人： Li-Chun Ko ,  Hong-Kai Hsu ,  I-Lin Hsieh ,  Jwo-An Lin ,  I-Kang Fu ,  Huanchun Ye

IPC分类号： H04L12/26

CPC分类号： H04W72/1215 ,  H04M1/6066 ,  H04W28/04 ,  H04W74/004 ,  H04W74/006 ,  H04W74/085 ,  H04W84/12 ,  H04W84/18 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/23

摘要： The invention provides a mobile communication device having a Packet Traffic Arbitrator (PTA) module and a first wireless communication module, coupled to the PTA module via only one wire and configured to perform a first wireless transceiving. The first wireless communication module sends a first request indicating a remaining period of time for a second wireless communication module to use to the PTA module via the wire, and receives, via the wire, a first response indicating whether the first request has been accepted.

摘要翻译： 本发明提供了一种具有分组业务仲裁器（PTA）模块和第一无线通信模块的移动通信设备，其经由仅一条线路耦合到PTA模块并且被配置为执行第一无线收发。 第一无线通信模块经由线路向PTA模块发送指示用于第二无线通信模块的剩余时间段的第一请求，并经由线路接收指示第一请求是否已被接受的第一响应。

公开(公告)号：US20070206695A1

公开(公告)日：2007-09-06

申请号：US11329978

申请日：2006-01-10

申请人： Huanchun Ye ,  Won-Joon Choi ,  Ning Zhang ,  Jeffrey Gilbert

发明人： Huanchun Ye ,  Won-Joon Choi ,  Ning Zhang ,  Jeffrey Gilbert

IPC分类号： H04L1/02

CPC分类号： H04L27/2608 ,  H04B7/02 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0016 ,  H04L1/0025 ,  H04L1/20

摘要： An accurate total error rate performance can be measured using a computed error vector magnitude (EVM) per stream. Using this EVM, the receiver or the transmitter can advantageously generate an optimized modulation and coding scheme (MCS) that corresponds to a specific number of streams, modulation and coding rate for the transmitter. For example, the receiver can compute an SNR from the EVM and then use an SNR vs. MCS table to determine the optimized MCS. In contrast, the transmitter can receive an EVM-to-RSSI mapping and an EVM-to-MCS mapping from the receiver. These mappings and an EVM can facilitate selecting the optimized MCS.

摘要翻译： 可以使用每个流的计算误差向量幅度（EVM）来测量精确的总错误率性能。 使用该EVM，接收机或发射机可以有利地生成对应于发射机的特定数量的流，调制和编码速率的优化的调制和编码方案（MCS）。 例如，接收机可以从EVM计算SNR，然后使用SNR对MCS表来确定优化的MCS。 相比之下，发射机可以从接收机接收EVM到RSSI映射和EVM到MCS映射。 这些映射和EVM可以促进选择优化的MCS。

公开(公告)号：US08744356B2

公开(公告)日：2014-06-03

申请号：US13218940

申请日：2011-08-26

申请人： Li-Chun Ko ,  Hong-Kai Hsu ,  I-Lin Hsieh ,  Jwo-An Lin ,  I-Kang Fu ,  Huanchun Ye

发明人： Li-Chun Ko ,  Hong-Kai Hsu ,  I-Lin Hsieh ,  Jwo-An Lin ,  I-Kang Fu ,  Huanchun Ye

IPC分类号： H04B7/00

CPC分类号： H04W72/1215 ,  H04M1/6066 ,  H04W28/04 ,  H04W74/004 ,  H04W74/006 ,  H04W74/085 ,  H04W84/12 ,  H04W84/18 ,  H04W88/04 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/23

摘要： The invention provides a mobile communication device having a Packet Traffic Arbitrator (PTA) module and a first wireless communication module, coupled to the PTA module via only one wire and configured to perform a first wireless transceiving. The first wireless communication module sends a first request indicating a remaining period of time for a second wireless communication module to use to the PTA module via the wire, and receives, via the wire, a first response indicating whether the first request has been accepted.

摘要翻译： 本发明提供了一种具有分组业务仲裁器（PTA）模块和第一无线通信模块的移动通信设备，其经由仅一条线路耦合到PTA模块并且被配置为执行第一无线收发。 第一无线通信模块经由线路向PTA模块发送指示用于第二无线通信模块的剩余时间段的第一请求，并经由线路接收指示第一请求是否已被接受的第一响应。

公开(公告)号：US08750926B2

公开(公告)日：2014-06-10

申请号：US13134876

申请日：2011-06-20

申请人： I-Kang Fu ,  Li-Chun Ko ,  Chi-Chen Lee ,  Huanchun Ye ,  Hong-Kai Hsu ,  Willaim Plumb

发明人： I-Kang Fu ,  Li-Chun Ko ,  Chi-Chen Lee ,  Huanchun Ye ,  Hong-Kai Hsu ,  Willaim Plumb

IPC分类号： H04M1/00

CPC分类号： H04W36/0005 ,  H04B1/406 ,  H04B2215/068

摘要： A wireless device having a central control entity that coordinates multiple radio transceivers co-located within the same device platform to mitigate coexistence interference. The wireless device comprises an LTE transceiver, a WiFi transceiver, a BT transceiver, or a GNSS receiver. In one embodiment, the central control entity receives radio signal information from the transceivers and determines control information. The control information is used to trigger FDM solution such that the transceivers operate in designated frequency channels to mitigate co-existence interference. In another embodiment, the central control entity receives traffic and scheduling information from the transceivers and determines control information. The control information is used to trigger TDM solution such that the transceivers are scheduled for transmitting or receiving radio signals over specific time duration to mitigate co-existence interference. In yet another embodiment, power control solution is used to mitigate coexistence interference.

摘要翻译： 一种具有中央控制实体的无线设备，其协调位于同一设备平台内的多个无线电收发器，以减轻共存干扰。 无线设备包括LTE收发器，WiFi收发器，BT收发器或GNSS接收器。 在一个实施例中，中央控制实体从收发器接收无线电信号信息并确定控制信息。 控制信息用于触发FDM解决方案，使得收发器在指定的频道中工作，以减轻共存干扰。 在另一个实施例中，中央控制实体从收发器接收业务和调度信息并确定控制信息。 控制信息用于触发TDM解决方案，使得收发器被调度用于在特定持续时间内发射或接收无线电信号以减轻共存干扰。 在另一个实施例中，功率控制解决方案用于减轻共存干扰。