专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 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。

2. 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。

3. 发明授权

US09467959B2 Method of maintaining multiple timing advance 有权
标题翻译：维持多个定时提前的方法
公开(公告)号：US09467959B2
公开(公告)日：2016-10-11
申请号：US13435504
申请日：2012-03-30
申请人： Yih-Shen Chen , Per Johan Mikael Johansson , Chia-Chun Hsu , Pei-Kai Liao , Shiang-Jiun Lin
发明人： Yih-Shen Chen , Per Johan Mikael Johansson , Chia-Chun Hsu , Pei-Kai Liao , Shiang-Jiun Lin
IPC分类号： H04W56/00 , H04L5/00 , H04W28/06
CPC分类号： H04W56/0045 , H04L5/001 , H04W28/06
摘要： A method of managing multiple timing advance (TA) groups, maintaining multiple TA timers, and performing UL synchronization in a multi-carrier wireless system is provided. When a new component carrier (CC) is configured, it is assigned to a TA group having a TA group identifier. The TA groups are managed statically or dynamically. The TA group identifier is used to uniquely identify the TA group in the operations of uplink (UL) timing synchronization. Multiple TA timers are assigned to multiple TA groups. The TA timers may have different values for different TA group. Different embodiments of UL timing adjustments for multiple TA groups are provided.
摘要翻译：提供了一种在多载波无线系统中管理多个定时提前（TA）组，维护多个TA定时器以及执行UL同步的方法。当配置新的分量载波（CC）时，将其分配给具有TA组标识符的TA组。 TA组是静态或动态管理的。 TA组标识符用于在上行链路（UL）定时同步的操作中唯一地标识TA组。多个TA定时器分配给多个TA组。 TA定时器对于不同的TA组可能具有不同的值。提供了用于多个TA组的UL定时调整的不同实施例。

4. 发明申请

US20120250520A1 Method of Maintaining Multiple Timing Advance 有权
标题翻译：维持多重定时提前的方法
公开(公告)号：US20120250520A1
公开(公告)日：2012-10-04
申请号：US13435504
申请日：2012-03-30
申请人： Yih-Shen Chen , Per Johan Mikael Johansson , Chia Chun Hsu , Pei-Kai Liao , Shiang-Jiun Lin
发明人： Yih-Shen Chen , Per Johan Mikael Johansson , Chia Chun Hsu , Pei-Kai Liao , Shiang-Jiun Lin
IPC分类号： H04W72/04 , H04W24/00
CPC分类号： H04W56/0045 , H04L5/001 , H04W28/06
摘要： A method of managing multiple timing advance (TA) groups, maintaining multiple TA timers, and performing UL synchronization in a multi-carrier wireless system is provided. When a new component carrier (CC) is configured, it is assigned to a TA group having a TA group identifier. The TA groups are managed statically or dynamically. The TA group identifier is used to uniquely identify the TA group in the operations of uplink (UL) timing synchronization. Multiple TA timers are assigned to multiple TA groups. The TA timers may have different values for different TA group. Different embodiments of UL timing adjustments for multiple TA groups are provided.
摘要翻译：提供了一种在多载波无线系统中管理多个定时提前（TA）组，维护多个TA定时器以及执行UL同步的方法。当配置新的分量载波（CC）时，将其分配给具有TA组标识符的TA组。 TA组是静态或动态管理的。 TA组标识符用于在上行链路（UL）定时同步的操作中唯一地标识TA组。多个TA定时器分配给多个TA组。 TA定时器对于不同的TA组可能具有不同的值。提供了用于多个TA组的UL定时调整的不同实施例。

5. 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。

6. 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。

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。

10. 发明授权

US08345623B2 Unified synchronous ranging channel design and allocation in wireless OFDMA systems 有权
标题翻译：无线OFDMA系统中的统一同步测距信道设计和分配
公开(公告)号：US08345623B2
公开(公告)日：2013-01-01
申请号：US12653360
申请日：2009-12-11
申请人： Yih-Shen Chen , Pei-Kai Liao
发明人： Yih-Shen Chen , Pei-Kai Liao
IPC分类号： H04Q7/00
CPC分类号： H04L27/2607 , H04L5/0007 , H04L5/0053 , H04L5/0073 , H04L27/2655 , H04W56/0005
摘要： A unified synchronous ranging channel is provided. The unified synchronous ranging channel has a ranging cyclic prefix length that is the same as a cyclic prefix length of a data channel. The unified synchronous ranging channel is used for one of initial ranging, handover ranging, and periodic ranging between a mobile station and a femto base station. In one embodiment, the synchronous ranging channel spans over a two-dimensional radio resource region having a first number of subcarriers along frequency domain, a second number of OFDM symbols along time domain, and a third number of time-domain repetition. At the transmit side, a ranging code sequence is generated by applying a fixed time-domain cyclic shift per OFDM symbol to a root sequence. At the receive side, the ranging code sequence is decoded by using a summation module, a likelihood-combining module, and a modified peak test module that normalizes a peak value.
摘要翻译：提供统一的同步测距通道。统一同步测距信道具有与数据信道的循环前缀长度相同的测距循环前缀长度。统一的同步测距信道用于移动台和毫微微基站之间的初始测距，切换测距和周期性测距之一。在一个实施例中，同步测距信道跨越具有沿频域的第一数量子载波的二维无线电资源区域，沿时域的第二数量的OFDM符号和第三数量的时域重复。在发送侧，通过对根序列应用每OFDM符号的固定时域循环移位来生成测距码序列。在接收侧，通过使用求和模块，似然合成模块和归一化峰值的修改峰值测试模块对测距代码序列进行解码。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式