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1. 发明申请

US20100104036A1 Contention-based access channel design in mimo OFDM/OFDMA systems 有权
标题翻译： mimo OFDM / OFDMA系统中基于争用的接入信道设计
公开(公告)号：US20100104036A1
公开(公告)日：2010-04-29
申请号：US12589449
申请日：2009-10-23
申请人： Pei-Kai Liao , Chih-Yuan Lin , Yih-Shen Chen
发明人： Pei-Kai Liao , Chih-Yuan Lin , Yih-Shen Chen
IPC分类号： H04K1/10
CPC分类号： H04L5/0023 , H04L1/0072 , H04L1/0631 , H04L5/0048 , H04L5/0053 , H04L5/0094 , H04L25/0228
摘要： A contention-based multi-antenna access request transmission/receiving procedure in MIMO OFDM/OFDMA systems is provided to reduce access latency. A mobile station encodes and transmits an access request over a shared access channel using multiple transmitting antennas, while a base station receives and decodes a number of access requests using multiple receiving antennas. Each access request comprises an access indictor and an access message. In a first MIMO scheme, the mobile station transmits the access indicator as preambles, while the access message is encoded by SFBC/STBC to obtain spatial diversity. At the receive side, the access indicator is exploited as pilots for channel estimation. The access message is decoded using SFBC/STBC decoding algorithm. In a second MIMO scheme, the mobile station performs precoding/beamforming for each of the transmitting antenna to obtain beamforming gain, while the base station performs virtual beam matching based on the detection results of the access indicators.
摘要翻译：提供MIMO OFDM / OFDMA系统中的基于竞争的多天线接入请求发送/接收过程以减少接入等待时间。移动台通过使用多个发射天线的共享接入信道来编码和发送接入请求，而基站使用多个接收天线接收并解码多个接入请求。每个访问请求包括访问指示符和访问消息。在第一MIMO方案中，移动站将接入指示符作为前导码发送，而接入消息由SFBC / STBC编码以获得空间分集。在接收端，接入指示器被用作信道估计的导频。访问消息使用SFBC / STBC解码算法进行解码。在第二MIMO方案中，移动台对于发射天线中的每一个执行预编码/波束成形，以获得波束成形增益，而基站基于访问指示符的检测结果执行虚拟波束匹配。

2. 发明授权

US08964658B2 Methods of contention-based transmission 有权
标题翻译：基于争用的传输方法
公开(公告)号：US08964658B2
公开(公告)日：2015-02-24
申请号：US13065797
申请日：2011-03-30
申请人： Yih-Shen Chen , Chia-Chun Hsu , Chih-Yuan Lin , Pei-Kai Liao
发明人： Yih-Shen Chen , Chia-Chun Hsu , Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04W4/00 , H04W74/08 , H04W72/04 , H04W72/12
CPC分类号： H04W74/0841 , H04W72/0453 , H04W72/0466 , H04W72/1284
摘要： A method for contention-based (CB) uplink transmission in a wireless communication network is provided. A base station (eNB) first transmits CB configuration information and CB grant to a user equipment (UE). The UE derives a plurality of transmission opportunities from the uplink CB grant and in response transmits uplink CB data via one of the transmission opportunities. The UE then receives an acknowledgment from the serving base station. If the uplink CB data is non-decodable by the eNB due to multiple contention UEs, then the UE retransmits the uplink data in response to a negative acknowledgment. In one novel aspect, the uplink transmission radio resource carriers both the uplink CB data and UE-selected signature information. In one embodiment, the UE-selected signature information is transmitted via pilot tones. By eliminating a separate phase of contention resolution, the overall latency of CB transmission is reduced and transmission efficiency is improved.
摘要翻译：提供了一种在无线通信网络中基于争用（CB）上行链路传输的方法。基站（eNB）首先向用户设备（UE）发送CB配置信息和CB授权。 UE从上行链路CB授权中导出多个传输机会，并且响应于传输机会中的一个发送上行链路CB数据。然后，UE从服务基站接收确认。如果上行CB数据由于多个争用UE而被eNB无法解码，则UE响应于否定确认重发上行链路数据。在一个新颖的方面，上行链路传输无线电资源承载上行链路CB数据和UE选择的签名信息。在一个实施例中，经由导频音发送UE选择的签名信息。通过消除争用解决的单独阶段，CB传输的总体延迟降低，传输效率提高。

3. 发明授权

US08934362B2 Power control method to mitigate interference for in-device coexistence 有权
标题翻译：用于减轻设备间共存干扰的功率控制方法
公开(公告)号：US08934362B2
公开(公告)日：2015-01-13
申请号：US13344589
申请日：2012-01-05
申请人： Chia-Chun Hsu , Chih-Yuan Lin , Yih-Shen Chen , I-Kang Fu , Michael Roberts
发明人： Chia-Chun Hsu , Chih-Yuan Lin , Yih-Shen Chen , I-Kang Fu , Michael Roberts
IPC分类号： H04L12/26 , H04L12/28 , H04W52/34 , H04W52/24 , H04W52/36 , H04W72/04
CPC分类号： H04W52/243 , H04W52/34 , H04W52/365 , H04W52/367 , H04W52/38 , H04W72/048
摘要： A power control method to mitigate in-device coexistence (IDC) interference is provided. A wireless communication device (UE) is equipped with a first LTE radio module and a second co-located WiFi/BT/GSNN radio module. Upon detecting coexistence or IDC interference, the UE applies power control method to mitigate the interference. In a first embodiment, the LTE radio module adjusts its power parameters locally without informing the serving eNB. In a second embodiment, the LTE radio module adjusts its power parameters and implicit informs the eNB through existing PHR reporting. In a third embodiment, the LTE radio module changes its power or power class and explicitly informs the eNB through UE capability or new RRC message or MAC CE. Power control can be used as a low cost and lightweight solution before applying other heavyweight solutions that either require more resource or control overhead, or have higher impact on throughput.
摘要翻译：提供了减轻设备间共存（IDC）干扰的功率控制方法。无线通信设备（UE）配备有第一LTE无线电模块和第二共同配置的WiFi / BT / GSNN无线电模块。在检测到共存或IDC干扰时，UE采用功率控制方法来减轻干扰。在第一实施例中，LTE无线电模块在本地调整其功率参数而不通知服务eNB。在第二实施例中，LTE无线电模块调整其功率参数，并通过现有的PHR报告暗示通知eNB。在第三实施例中，LTE无线电模块改变其功率或功率等级，并通过UE能力或新的RRC消息或MAC CE明确地通知eNB。在应用其他重量级解决方案之前，功率控制可以用作低成本和轻量级的解决方案，需要更多资源或控制开销，或对吞吐量有较高的影响。

4. 发明申请

US20110243080A1 Methods of contention-based transmission 有权
标题翻译：基于争用的传输方法
公开(公告)号：US20110243080A1
公开(公告)日：2011-10-06
申请号：US13065797
申请日：2011-03-30
申请人： Yih-Shen Chen , Chia-Chun Hsu , Chih-Yuan Lin , Pei-Kai Liao
发明人： Yih-Shen Chen , Chia-Chun Hsu , Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04W72/04
CPC分类号： H04W74/0841 , H04W72/0453 , H04W72/0466 , H04W72/1284
摘要： A method for contention-based (CB) uplink transmission in a wireless communication network is provided. A base station (eNB) first transmits CB configuration information and CB grant to a user equipment (UE). The UE derives a plurality of transmission opportunities from the uplink CB grant and in response transmits uplink CB data via one of the transmission opportunities. The UE then receives an acknowledgment from the serving base station. If the uplink CB data is non-decodable by the eNB due to multiple contention UEs, then the UE retransmits the uplink data in response to a negative acknowledgment. In one novel aspect, the uplink transmission radio resource carriers both the uplink CB data and UE-selected signature information. In one embodiment, the UE-selected signature information is transmitted via pilot tones. By eliminating a separate phase of contention resolution, the overall latency of CB transmission is reduced and transmission efficiency is improved.
摘要翻译：提供了一种在无线通信网络中基于争用（CB）上行链路传输的方法。基站（eNB）首先向用户设备（UE）发送CB配置信息和CB授权。 UE从上行链路CB授权中导出多个传输机会，并且响应于传输机会中的一个发送上行链路CB数据。然后，UE从服务基站接收确认。如果上行CB数据由于多个争用UE而被eNB无法解码，则UE响应于否定确认重发上行链路数据。在一个新颖的方面，上行链路传输无线电资源承载上行链路CB数据和UE选择的签名信息。在一个实施例中，经由导频音发送UE选择的签名信息。通过消除争用解决的单独阶段，CB传输的总体延迟降低，传输效率提高。

5. 发明授权

US08873489B2 Signaling methods for UE-specific dynamic downlink scheduler in OFDMA systems 有权
标题翻译： OFDMA系统中UE特定动态下行链路调度器的信令方法
公开(公告)号：US08873489B2
公开(公告)日：2014-10-28
申请号：US13463113
申请日：2012-05-03
申请人： Pei-Kai Liao , Chih-Yuan Lin , Yih-Shen Chen
发明人： Pei-Kai Liao , Chih-Yuan Lin , Yih-Shen Chen
IPC分类号： H04W4/00 , H04J1/00 , H04W72/04 , H04W28/06
CPC分类号： H04W72/042 , H04L5/0051 , H04L5/0094 , H04W28/06
摘要： Signaling methods for UE-specific downlink control channels in OFDMA systems are provided. In a first method, a dynamic downlink signaling in cell-specific radio resources is used to signal UE-specific downlink control channel in UE-specific radio resources. In LTE, a specific DCI format in PDCCH is used to dynamically signal the UE-specific downlink control channel X-PDCCH that resides in legacy PDSCH region. In a second method, a semi-static higher-layer signaling is used to signal UE-specific downlink control channel in UE-specific radio resources. In LTE, RRC signaling is used to semi-statically signal the UE-specific downlink control channel X-PDCCH that resides in legacy PDSCH region. By using UE-specific downlink control channels, significant control overhead reduction can be achieved.
摘要翻译：提供OFDMA系统中针对UE专用下行链路控制信道的信令方法。在第一种方法中，小区专用无线电资源中的动态下行链路信令用于在特定于UE的无线电资源中用信号通知UE特定的下行链路控制信道。在LTE中，使用PDCCH中的特定DCI格式来动态地发送驻留在传统PDSCH区域中的UE特定的下行链路控制信道X-PDCCH。在第二种方法中，半静态上层信令用于在特定UE的无线电资源中用信号通知UE特定的下行链路控制信道。在LTE中，RRC信令用于半驻留在传统PDSCH区域中的UE专用下行链路控制信道X-PDCCH。通过使用UE特定的下行链路控制信道，可以实现显着的控制开销降低。

6. 发明授权

US08855053B2 Sounding mechanism and configuration under carrier aggregation 有权
标题翻译：载波聚合下的探测机制和配置
公开(公告)号：US08855053B2
公开(公告)日：2014-10-07
申请号：US13373071
申请日：2011-11-01
申请人： Yih-Shen Chen , Chih-Yuan Lin
发明人： Yih-Shen Chen , Chih-Yuan Lin
IPC分类号： H04W4/00 , H04L5/00 , H04W72/14
CPC分类号： H04L5/0051 , H04L5/001 , H04L5/0023 , H04L5/0053 , H04L5/0091 , H04L5/0094 , H04W72/14
摘要： A method of multi-set RRC signaling for ap-SRS configuration is provided to enhance ap-SRS flexibility. An eNB transmits a plurality of sets of UE-specific SRS parameters to a UE via upper layer messaging in a multi-carrier wireless communication system. The eNB also determines triggering information of a selected set of UE-specific SRS parameters and an indicated carrier for the UE. The eNB then transmits an uplink or downlink grant over a primary carrier, the grant comprises triggering information for the UE to send an ap-SRS over the indicated carrier using the selected set of UE-specific SRS parameters. In one embodiment of joint signaling, the plurality of sets of UE-specific SRS parameters are signaled together in a single RRC transmission. In another embodiment of separate signaling, each set of UE-specific SRS parameters is signaled independently.
摘要翻译：提供了用于ap-SRS配置的多集RRC信令的方法以增强ap-SRS灵活性。 eNB在多载波无线通信系统中经由上层消息传送向UE发送多组UE特定的SRS参数。 eNB还确定UE特定SRS参数的所选集合的触发信息以及针对UE的所指示的载波。 eNB然后通过主载波发送上行链路或下行链路许可，该许可包括触发信息，以使UE使用所选择的UE专用SRS参数集来在所指示的载波上发送ap-SRS。在联合信令的一个实施例中，在单个RRC传输中将多组UE特定SRS参数一起发信号通知。在单独信令的另一个实施例中，UE集合的特定SRS参数被独立地发信号通知。

7. 发明申请

US20120281646A1 Signaling Methods for UE-Specific Dynamic Downlink Scheduler in OFDMA Systems 有权
标题翻译： OFDMA系统中UE特定动态下行链路调度器的信令方法
公开(公告)号：US20120281646A1
公开(公告)日：2012-11-08
申请号：US13463113
申请日：2012-05-03
申请人： Pei-Kai Liao , Chih-Yuan Lin , Yih-Shen Chen
发明人： Pei-Kai Liao , Chih-Yuan Lin , Yih-Shen Chen
IPC分类号： H04W72/04
CPC分类号： H04W72/042 , H04L5/0051 , H04L5/0094 , H04W28/06
摘要： Signaling methods for UE-specific downlink control channels in OFDMA systems are provided. In a first method, a dynamic downlink signaling in cell-specific radio resources is used to signal UE-specific downlink control channel in UE-specific radio resources. In LTE, a specific DCI format in PDCCH is used to dynamically signal the UE-specific downlink control channel X-PDCCH that resides in legacy PDSCH region. In a second method, a semi-static higher-layer signaling is used to signal UE-specific downlink control channel in UE-specific radio resources. In LTE, RRC signaling is used to semi-statically signal the UE-specific downlink control channel X-PDCCH that resides in legacy PDSCH region. By using UE-specific downlink control channels, significant control overhead reduction can be achieved.
摘要翻译：提供OFDMA系统中针对UE专用下行链路控制信道的信令方法。在第一种方法中，小区专用无线电资源中的动态下行链路信令用于在特定于UE的无线电资源中用信号通知UE特定的下行链路控制信道。在LTE中，使用PDCCH中的特定DCI格式来动态地发送驻留在传统PDSCH区域中的UE特定的下行链路控制信道X-PDCCH。在第二种方法中，半静态上层信令用于在特定UE的无线电资源中用信号通知UE特定的下行链路控制信道。在LTE中，RRC信令用于半驻留在传统PDSCH区域中的UE专用下行链路控制信道X-PDCCH。通过使用UE特定的下行链路控制信道，可以实现显着的控制开销降低。

8. 发明申请

US20100220651A1 Method and apparatus for broadcasting and receiving system information in OFDMA systems 审中-公开
标题翻译： OFDMA系统中广播和接收系统信息的方法和装置
公开(公告)号：US20100220651A1
公开(公告)日：2010-09-02
申请号：US12660440
申请日：2010-02-26
申请人： Yih-Shen Chen , Pei-Kai Liao , Chih-Yuan Lin
发明人： Yih-Shen Chen , Pei-Kai Liao , Chih-Yuan Lin
IPC分类号： H04W40/00 , H04J1/00
CPC分类号： H04W72/082 , H04L5/0007 , H04L5/0035 , H04L5/005 , H04L5/0073 , H04L25/0232 , H04W48/12
摘要： A method for broadcasting system information via a broadcast channel (BCH) in an OFDMA system is provided. The BCH comprises one or more two-dimensional resource blocks. A plurality of pilot tones and a plurality of data tones are positioned within each resource block. The system information is mapped onto the plurality of data tones. In one embodiment, the plurality of pilot tones are located in configurable positions such that pilot tones of the same resource blocks transmitted by different base stations in the OFDMA system are interlaced to reduce pilot-to-pilot collision. In another embodiment, data tones that are located in pilot positions of other adjacent cells are nullified to reduce data-to-pilot collision. In one novel aspect, the property of interlaced pilot patterns and tone nullification is leveraged to estimate interference second-order statistics, which facilitates receiver implementation and improves receiver performance.
摘要翻译：提供了一种通过OFDMA系统中的广播信道（BCH）广播系统信息的方法。 BCH包括一个或多个二维资源块。多个导频音和多个数据音调位于每个资源块内。系统信息被映射到多个数据音调上。在一个实施例中，多个导频音调位于可配置位置，使得由OFDMA系统中的不同基站发送的相同资源块的导频音调隔行扫描以减少导频到导频的冲突。在另一个实施例中，位于其他相邻小区的导频位置的数据音调被消除以减少数据到导频的碰撞。在一个新颖的方面，利用隔行导频模式和音调无效的性质来估计干扰二阶统计，这有助于接收机实现并提高接收机性能。

9. 发明授权

US08548082B2 Contention-based access channel design in MIMO OFDM/OFDMA systems 有权
标题翻译： MIMO OFDM / OFDMA系统中基于竞争的接入信道设计
公开(公告)号：US08548082B2
公开(公告)日：2013-10-01
申请号：US12589449
申请日：2009-10-23
申请人： Pei-Kai Liao , Chih-Yuan Lin , Yih-Shen Chen
发明人： Pei-Kai Liao , Chih-Yuan Lin , Yih-Shen Chen
IPC分类号： H04B7/02
CPC分类号： H04L5/0023 , H04L1/0072 , H04L1/0631 , H04L5/0048 , H04L5/0053 , H04L5/0094 , H04L25/0228
摘要： A contention-based multi-antenna access request transmission/receiving procedure in MIMO OFDM/OFDMA systems is provided to reduce access latency. A mobile station encodes and transmits an access request over a shared access channel using multiple transmitting antennas, while a base station receives and decodes a number of access requests using multiple receiving antennas. Each access request comprises an access indictor and an access message. In a first MIMO scheme, the mobile station transmits the access indicator as preambles, while the access message is encoded by SFBC/STBC to obtain spatial diversity. At the receive side, the access indicator is exploited as pilots for channel estimation. The access message is decoded using SFBC/STBC decoding algorithm. In a second MIMO scheme, the mobile station performs precoding/beamforming for each of the transmitting antenna to obtain beamforming gain, while the base station performs virtual beam matching based on the detection results of the access indicators.
摘要翻译：提供MIMO OFDM / OFDMA系统中的基于竞争的多天线接入请求发送/接收过程以减少接入等待时间。移动台通过使用多个发射天线的共享接入信道来编码和发送接入请求，而基站使用多个接收天线接收并解码多个接入请求。每个访问请求包括访问指示符和访问消息。在第一MIMO方案中，移动站将接入指示符作为前导码发送，而接入消息由SFBC / STBC编码以获得空间分集。在接收端，接入指示器被用作信道估计的导频。访问消息使用SFBC / STBC解码算法进行解码。在第二MIMO方案中，移动台对于发射天线中的每一个执行预编码/波束成形，以获得波束成形增益，而基站基于访问指示符的检测结果执行虚拟波束匹配。

10. 发明申请

US20120176923A1 Power Control Method to Mitigate Interference for In-Device Coexistence 有权
标题翻译：减少设备间共存干扰的功率控制方法
公开(公告)号：US20120176923A1
公开(公告)日：2012-07-12
申请号：US13344589
申请日：2012-01-05
申请人： Chia-Chun Hsu , Chih-Yuan Lin , Yih-Shen Chen , I-Kang Fu , Michael Roberts
发明人： Chia-Chun Hsu , Chih-Yuan Lin , Yih-Shen Chen , I-Kang Fu , Michael Roberts
IPC分类号： H04W52/24 , H04W24/02
CPC分类号： H04W52/243 , H04W52/34 , H04W52/365 , H04W52/367 , H04W52/38 , H04W72/048
摘要： A power control method to mitigate in-device coexistence (IDC) interference is provided. A wireless communication device (UE) is equipped with a first LTE radio module and a second co-located WiFi/BT/GSNN radio module. Upon detecting coexistence or IDC interference, the UE applies power control method to mitigate the interference. In a first embodiment, the LTE radio module adjusts its power parameters locally without informing the serving eNB. In a second embodiment, the LTE radio module adjusts its power parameters and implicit informs the eNB through existing PHR reporting. In a third embodiment, the LTE radio module changes its power or power class and explicitly informs the eNB through UE capability or new RRC message or MAC CE. Power control can be used as a low cost and lightweight solution before applying other heavyweight solutions that either require more resource or control overhead, or have higher impact on throughput.
摘要翻译：提供了减轻设备间共存（IDC）干扰的功率控制方法。无线通信设备（UE）配备有第一LTE无线电模块和第二共同配置的WiFi / BT / GSNN无线电模块。当检测到共存或IDC干扰时，UE采用功率控制方法来减轻干扰。在第一实施例中，LTE无线电模块在本地调整其功率参数而不通知服务eNB。在第二实施例中，LTE无线电模块调整其功率参数，并通过现有的PHR报告暗示通知eNB。在第三实施例中，LTE无线电模块改变其功率或功率等级，并通过UE能力或新的RRC消息或MAC CE明确地通知eNB。在应用其他重量级解决方案之前，功率控制可以用作低成本和轻量级的解决方案，需要更多资源或控制开销，或对吞吐量有较高的影响。

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