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

US08861430B2 Methods of point association for cooperative multiple point transmission 有权
标题翻译：协调多点传输的点关联方法
公开(公告)号：US08861430B2
公开(公告)日：2014-10-14
申请号：US13570717
申请日：2012-08-09
申请人： Pei-Kai Liao , Chih-Yuan Lin
发明人： Pei-Kai Liao , Chih-Yuan Lin
IPC分类号： H04B7/185 , H04B7/06 , H04W72/08 , H04B7/02 , H04W24/10
CPC分类号： H04W72/085 , H04B7/024 , H04B7/0626 , H04W24/10
摘要： Procedures for point association as well as measurement and feedback required to enable point association for CoMP deployment scenario 4 are proposed. In a first novel aspect, a serving eNB configures a first higher-layer configuration for RSRP measurement to be used by a UE for serving point selection. The higher-layer configuration contains multiple CSI-RS configurations, and each CSI-RS configuration indicates a set of resource elements (REs) or subcarriers in both frequency domain and time domain as one CSI-RS resource with non-zero transmission power. The UE then performs RSRP measurements based on the multiple CSI-RS configurations and reports RSRP measurement results to the serving eNB. In a second novel aspect, the serving eNB configures a second higher-layer configuration for CSI reporting based on the reported RSRP measurement results. In a third novel aspect, the serving eNB sends CSI-RS information to the UE for uplink power control.
摘要翻译：提出了点关联的程序以及启用CoMP部署场景4的点关联所需的测量和反馈。在第一新颖的方面，服务eNB配置用于RSRP测量的第一高层配置以由UE用于服务点选择。较高层配置包含多个CSI-RS配置，并且每个CSI-RS配置指示频域和时域中的一组资源元素（RE）或子载波，作为具有非零传输功率的一个CSI-RS资源。然后，UE基于多个CSI-RS配置执行RSRP测量，并向服务eNB报告RSRP测量结果。在第二个新颖的方面，服务eNB基于报告的RSRP测量结果来配置用于CSI报告的第二较高层配置。在第三个新颖的方面，服务eNB向UE发送CSI-RS信息以进行上行链路功率控制。

2. 发明授权

US08724718B2 Pilot pattern design for small size resource block in OFDMA systems 失效
标题翻译： OFDMA系统中小尺寸资源块的导频模式设计
公开(公告)号：US08724718B2
公开(公告)日：2014-05-13
申请号：US12384754
申请日：2009-04-08
申请人： Chih-Yuan Lin , Pei-Kai Liao
发明人： Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04B3/10
CPC分类号： H04L5/0048 , H04L5/0023
摘要： In OFDMA wireless communications systems, pilot pattern design is optimized based on predefined resource block size. The number of pilots and the spacing between pilots within a resource block is determined based on a set of system requirements. In one novel aspect, if resource block size is smaller than three in either frequency or time domain, then the pilots are allocated such that average pilot-to-data distance is minimized and that pilot-to-pilot distance is as large as possible. In one example, m pilots are allocated in an i×j resource block. The resource block is partitioned into n equal sub blocks, where m is a multiple of n. Within each sub block, m/n pilots are positioned such that average pilot-to-data distance is minimized. On the other hand, if resource block size is larger than or equal to three in both frequency and time domain, then pilots are allocated to avoid channel extrapolation.
摘要翻译：在OFDMA无线通信系统中，基于预定义的资源块大小来优化导频模式设计。基于一组系统要求确定资源块内的导频数和导频间距。在一个新颖的方面，如果在频率或时域中资源块大小小于3，则分配导频，使得平均导频到数据距离最小化，并且导频到导频的距离尽可能大。在一个示例中，m个导频被分配在i×j个资源块中。资源块被划分成n个相等的子块，其中m是n的倍数。在每个子块内，m / n导频被定位成使得平均导频到数据距离被最小化。另一方面，如果在频域和时域中资源块大小都大于或等于3，则分配导频以避免信道外推。

3. 发明授权

US08724717B2 Pilot pattern design for high-rank MIMO OFDMA systems 失效
标题翻译：高阶MIMO OFDMA系统的导频模式设计
公开(公告)号：US08724717B2
公开(公告)日：2014-05-13
申请号：US12384705
申请日：2009-04-08
申请人： Chih-Yuan Lin , Pei-Kai Liao
发明人： Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04K1/10
CPC分类号： H04L5/0048 , H04L5/0023
摘要： In OFDMA wireless communications systems, pilot pattern design is optimized based on predefined resource block size. The number of pilots and the spacing between pilots within a resource block is determined based on a set of system requirements. In one novel aspect, in a high-rank MIMO system, pilots are allocated within a resource block to avoid channel extrapolation in frequency domain only. Because high-rank MIMO only supports low-mobility environment, time-domain extrapolation is no longer a dominant factor. For uplink transmission, one or more frequency tones at one or more edges of the resource block are reserved to be pilot-free to reduce multiuser synchronization error effect. When continuous resource blocks are jointly used for channel estimation, the upper and lower edges of each resource block are left with blanks such that edge pilots of adjacent resource blocks are not too close to each other to improve channel estimation.
摘要翻译：在OFDMA无线通信系统中，基于预定义的资源块大小来优化导频模式设计。基于一组系统要求确定资源块内的导频数和导频间距。在一个新颖的方面，在高阶MIMO系统中，导频被分配在资源块内以避免仅在频域中的信道外推。由于高阶MIMO仅支持低移动性环境，所以时域外推不再是主导因素。对于上行链路传输，资源块的一个或多个边缘处的一个或多个频率音调被保留为无导频，以减少多用户同步误差效应。当连续资源块共同用于信道估计时，每个资源块的上边缘和下边缘都留有空白，使得相邻资源块的边缘导频彼此不太靠近以改善信道估计。

4. 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。

5. 发明授权

US08503420B2 Physical structure and design of sounding channel in OFDMA systems 有权
标题翻译： OFDMA系统中探测信道的物理结构和设计
公开(公告)号：US08503420B2
公开(公告)日：2013-08-06
申请号：US12655523
申请日：2009-12-30
申请人： Chih-Yuan Lin , Pei-Kai Liao
发明人： Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04B7/208
CPC分类号： H04L5/0051 , H04L5/0007 , H04L5/0062 , H04L25/0226 , H04L2025/03796
摘要： In wireless OFDMA systems, sounding channels are allocated within predefined resource blocks. In a distributed sounding channel allocation scheme, a sounding channel is allocated to meet various design considerations. First, sounding signals do not collide with original pilots transmitted in the same resource block by other mobile stations to achieve good quality channel estimation. Second, sounding pattern does not affect data transmission behavior of other mobile stations in the same resource block. Third, sounding pattern consistency among multiple tiles within each resource block is maintained so that mobile stations do not need to implement additional data mapping rules. In a symbol-based sounding channel allocation scheme, a sounding channel is allocated in the first or the last OFDM symbol of a resource block, while the remaining consecutive OFDM symbols are used for data transmission. The symbol-based sound channel naturally satisfies all design considerations.
摘要翻译：在无线OFDMA系统中，在预定义的资源块内分配探测信道。在分布式探测信道分配方案中，分配探测信道以满足各种设计考虑。首先，探测信号不与其他移动台在同一资源块中传输的原始导频相冲突，以实现良好质量的信道估计。其次，探测模式不影响同一资源块中其他移动台的数据传输行为。第三，保持每个资源块内的多个瓦片之间的探测模式一致性，使得移动台不需要实现附加的数据映射规则。在基于符号的探测信道分配方案中，在资源块的第一个或最后一个OFDM符号中分配探测信道，而剩余的连续OFDM符号用于数据传输。基于符号的声音通道自然满足所有设计考虑。

6. 发明申请

US20090257520A1 Pilot pattern design for small size resource block in OFDMA systems 失效
标题翻译： OFDMA系统中小尺寸资源块的导频模式设计
公开(公告)号：US20090257520A1
公开(公告)日：2009-10-15
申请号：US12384754
申请日：2009-04-08
申请人： Chih-Yuan Lin , Pei-Kai Liao
发明人： Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04B3/10 , H04L27/28
CPC分类号： H04L5/0048 , H04L5/0023
摘要： In OFDMA wireless communications systems, pilot pattern design is optimized based on predefined resource block size. The number of pilots and the spacing between pilots within a resource block is determined based on a set of system requirements. In one novel aspect, if resource block size is smaller than three in either frequency or time domain, then the pilots are allocated such that average pilot-to-data distance is minimized and that pilot-to-pilot distance is as large as possible. In one example, m pilots are allocated in an i×j resource block. The resource block is partitioned into n equal sub blocks, where m is a multiple of n. Within each sub block, m/n pilots are positioned such that average pilot-to-data distance is minimized. On the other hand, if resource block size is larger than or equal to three in both frequency and time domain, then pilots are allocated to avoid channel extrapolation.
摘要翻译：在OFDMA无线通信系统中，基于预定义的资源块大小来优化导频模式设计。基于一组系统要求确定资源块内的导频数和导频间距。在一个新颖的方面，如果在频率或时域中资源块大小小于3，则分配导频，使得平均导频到数据距离最小化，并且导频到导频的距离尽可能大。在一个示例中，m个导频被分配在ixj资源块中。资源块被划分成n个相等的子块，其中m是n的倍数。在每个子块内，m / n导频被定位成使得平均导频到数据距离被最小化。另一方面，如果在频域和时域中资源块大小都大于或等于3，则分配导频以避免信道外推。

7. 发明申请

US20090257519A1 Pilot pattern design for high-rank MIMO OFDMA systems 失效
标题翻译：高阶MIMO OFDMA系统的导频模式设计
公开(公告)号：US20090257519A1
公开(公告)日：2009-10-15
申请号：US12384705
申请日：2009-04-08
申请人： Chih-Yuan Lin , Pei-Kai Liao
发明人： Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04K1/10 , H04W4/00
CPC分类号： H04L5/0048 , H04L5/0023
摘要： In OFDMA wireless communications systems, pilot pattern design is optimized based on predefined resource block size. The number of pilots and the spacing between pilots within a resource block is determined based on a set of system requirements. In one novel aspect, in a high-rank MIMO system, pilots are allocated within a resource block to avoid channel extrapolation in frequency domain only. Because high-rank MIMO only supports low-mobility environment, time-domain extrapolation is no longer a dominant factor. For uplink transmission, one or more frequency tones at one or more edges of the resource block are reserved to be pilot-free to reduce multiuser synchronization error effect. When continuous resource blocks are jointly used for channel estimation, the upper and lower edges of each resource block are left with blanks such that edge pilots of adjacent resource blocks are not too close to each other to improve channel estimation.
摘要翻译：在OFDMA无线通信系统中，基于预定义的资源块大小来优化导频模式设计。基于一组系统要求确定资源块内的导频数和导频间距。在一个新颖的方面，在高阶MIMO系统中，导频被分配在资源块内以避免仅在频域中的信道外推。由于高阶MIMO仅支持低移动性环境，所以时域外推不再是主导因素。对于上行链路传输，资源块的一个或多个边缘处的一个或多个频率音调被保留为无导频，以减少多用户同步误差效应。当连续资源块共同用于信道估计时，每个资源块的上边缘和下边缘都留有空白，使得相邻资源块的边缘导频彼此不太靠近以改善信道估计。

8. 发明申请

US20120207047A1 Priority Rules of Periodic CSI Reporting in Carrier Aggregation 有权
标题翻译：载波聚合中定期CSI报告的优先级规则
公开(公告)号：US20120207047A1
公开(公告)日：2012-08-16
申请号：US13396562
申请日：2012-02-14
申请人： Pei-Kai Liao , Chih-Yuan Lin
发明人： Pei-Kai Liao , Chih-Yuan Lin
IPC分类号： H04W72/02 , H04W24/10
CPC分类号： H04W72/10 , H04B7/0417 , H04B7/063 , H04B7/0632 , H04B7/0639 , H04B7/0645 , H04L1/0026 , H04L1/0029 , H04L1/003 , H04L1/0031 , H04L5/001 , H04L5/0057 , H04L2025/03808 , H04W24/10
摘要： A method of determining priority rules for periodic CSI reporting in carrier aggregation is proposed. A UE obtains channel state information (CSI) feedback for multiple downlink component carriers (CCs) in a multi-carrier wireless communication network. Each downlink CC is associated with a feedback mode, and each feedback mode comprises a set of feedback types to be reported to a base station at time slots configured by an upper layer. The UE then determines a prioritized downlink CC for CSI reporting based on priority levels of the feedback types to be transmitted for each downlink CC at a given time slot. The UE then transmits the corresponding CSI feedback for the prioritized downlink CC at the given time slot via a feedback channel over a primary uplink CC. In one embodiment, different feedback types are prioritized by groups, and each group has several feedback types sharing the same priority.
摘要翻译：提出了一种确定载波聚合中周期性CSI报告优先权规则的方法。 UE在多载波无线通信网络中获得多个下行链路分量载波（CC）的信道状态信息（CSI）反馈。每个下行链路CC与反馈模式相关联，并且每个反馈模式包括将由上层配置的时隙向基站报告的一组反馈类型。然后，UE基于在给定时隙处针对每个下行链路CC发送的反馈类型的优先级来确定用于CSI报告的优先级下行链路CC。然后，UE经由主上行链路CC上的反馈信道在给定时隙上为优先化的下行链路CC发送相应的CSI反馈。在一个实施例中，不同的反馈类型由组优先，并且每个组具有共享相同优先级的多个反馈类型。

9. 发明申请

US20100165972A1 Physical structure and design of sounding channel in OFDMA systems 有权
标题翻译： OFDMA系统中探测信道的物理结构和设计
公开(公告)号：US20100165972A1
公开(公告)日：2010-07-01
申请号：US12655523
申请日：2009-12-30
申请人： Chih-Yuan Lin , Pei-Kai Liao
发明人： Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04B7/208 , H04L27/28
CPC分类号： H04L5/0051 , H04L5/0007 , H04L5/0062 , H04L25/0226 , H04L2025/03796
摘要： In wireless OFDMA systems, sounding channels are allocated within predefined resource blocks. In a distributed sounding channel allocation scheme, a sounding channel is allocated to meet various design considerations. First, sounding signals do not collide with original pilots transmitted in the same resource block by other mobile stations to achieve good quality channel estimation. Second, sounding pattern does not affect data transmission behavior of other mobile stations in the same resource block. Third, sounding pattern consistency among multiple tiles within each resource block is maintained so that mobile stations do not need to implement additional data mapping rules. In a symbol-based sounding channel allocation scheme, a sounding channel is allocated in the first or the last OFDM symbol of a resource block, while the remaining consecutive OFDM symbols are used for data transmission. The symbol-based sound channel naturally satisfies all design considerations.
摘要翻译：在无线OFDMA系统中，在预定义的资源块内分配探测信道。在分布式探测信道分配方案中，分配探测信道以满足各种设计考虑。首先，探测信号不与其他移动台在同一资源块中传输的原始导频相冲突，以实现良好质量的信道估计。其次，探测模式不影响同一资源块中其他移动台的数据传输行为。第三，保持每个资源块内的多个瓦片之间的探测模式一致性，使得移动台不需要实现附加的数据映射规则。在基于符号的探测信道分配方案中，在资源块的第一个或最后一个OFDM符号中分配探测信道，而剩余的连续OFDM符号用于数据传输。基于符号的声音通道自然满足所有设计考虑。

10. 发明申请

US20100165954A1 Physical structure and sequence design of midamble in OFDMA systems 有权
标题翻译： OFDMA系统中的midamble的物理结构和序列设计
公开(公告)号：US20100165954A1
公开(公告)日：2010-07-01
申请号：US12655524
申请日：2009-12-30
申请人： Chih-Yuan Lin , Pei-Kai Liao
发明人： Chih-Yuan Lin , Pei-Kai Liao
IPC分类号： H04W4/00 , H04L27/28 , H04B7/216 , H04J3/00 , H04B7/208 , H04J4/00
CPC分类号： H04J11/005 , H04L5/0007 , H04L5/005 , H04L27/261 , H04L2025/03796
摘要： In wireless OFDMA systems, midamble is used to facilitate downlink (DL) channel estimation. Midamble signals are transmitted by a base station via a midamble channel allocated in a DL subframe. In a novel symbol-based midamble channel allocation scheme, a midamble channel is allocated in the first or the last OFDM symbol of multiple resource blocks of the subframe, while the remaining consecutive OFDM symbols are used for data transmission. The symbol-based midamble channel provides good coexistence between midamble signals and pilot signals without inducing additional limitation or complexity. Under a novel midamble channel and sequence arrangement, both code sequence and either time-domain or frequency-domain location degrees-of-freedom are considered such that the required number of midamble sequences is substantially smaller than the number of strong interferences. In addition, different midamble sequences are systematically generated based on a base sequence such that the receiving mobile station does not need to memorize all the different code sequences.
摘要翻译：在无线OFDMA系统中，使用midamble来促进下行链路（DL）信道估计。 Midamble信号由基站经由在DL子帧中分配的中置码信道发送。在一种新颖的基于符号的中间码信道分配方案中，在子帧的多个资源块的第一个或最后一个OFDM符号中分配一个中继码信道，而其余的连续的OFDM符号用于数据传输。基于符号的中置码信道在中置信号和导频信号之间提供良好的共存，而不会引起额外的限制或复杂性。在新颖的中间码信道和序列排列下，考虑码序列和时域或频域位置自由度，使得所需数量的中继码序列显着小于强干扰数。此外，基于基本序列系统地生成不同的中间码序列，使得接收移动台不需要记住所有不同的代码序列。

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