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公开(公告)号：US20150326381A1
公开(公告)日：2015-11-12
申请号：US14706856
申请日：2015-05-07
Applicant: QUALCOMM Incorporated
Inventor： Iyab Issam Sakhnini , Tingfang Ji , Hao Xu , Wanshi Chen , Alexei Yurievitch Gorokhov
CPC classification number: H04L5/16 , H04B1/52 , H04L1/0027 , H04L1/1822 , H04L1/1887 , H04L1/1896 , H04L5/0055 , H04L5/0073 , H04L5/0091 , H04L5/0092 , H04L5/1438
Abstract: Methods, systems, and devices for half-duplex frequency division duplexing (HD-FDD) hybrid automatic repeat request (HARQ) operation are described. The base station may receive a message from a user equipment (UE) indicative of a duplexing capability of the UE. The base station may then select a HARQ process limit based on the duplexing capability. In some examples, the base station may anticipate a collision between an uplink (UL) transmission and a downlink (DL) subframe based on the selected HARQ process limit. The base station may then schedule a transmission to avoid the anticipated collision. In some examples, the base station may limit a number of configurations available for channel quality indicator (CQI) or a precoding matrix indicator (PMI).
Abstract translation: 描述了用于半双工频分双工（HD-FDD）混合自动重传请求（HARQ）操作的方法，系统和设备。 基站可以从指示UE的双工能力的用户设备（UE）接收消息。 然后，基站可以基于双工能力来选择HARQ进程限制。 在一些示例中，基站可以基于所选择的HARQ进程限制来预期上行链路（UL）传输和下行链路（DL）子帧之间的冲突。 然后，基站可以安排传输以避免预期的冲突。 在一些示例中，基站可以限制可用于信道质量指示符（CQI）或预编码矩阵指示符（PMI）的多个配置。
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公开(公告)号：US20150304089A1
公开(公告)日：2015-10-22
申请号：US14754033
申请日：2015-06-29
Applicant: QUALCOMM Incorporated
Inventor： Byoung-Hoon Kim , Durga Prasad Malladi , Hao Xu
CPC classification number: H04L5/0057 , H04B7/0413 , H04B7/0632 , H04B2201/70701 , H04L1/0002 , H04L1/02 , H04L1/06 , H04L5/023 , H04L25/0224 , H04L25/023 , H04L27/261 , H04W52/325 , H04W72/042
Abstract: Techniques for efficiently deriving uplink channel estimates without consuming much additional uplink resources are described. A user equipment (UE) may send a request for uplink resources on a request channel (REQCH) whenever the UE desires to transmit data on the uplink. The UE may send the REQCH on a set of subcarriers and from multiple antennas, e.g., send REQCH data on data subcarriers and pilot on pilot subcarriers. A Node B may receive the request, estimate the complex channel gains for the pilot subcarriers based on received pilot symbols, and coherently demodulate received data symbols based on the channel gain estimates. The Node B may estimate the complex channel gains for the data subcarriers based on demodulated data symbols and derive a channel estimate for each UE antenna based on the channel gain estimates for the pilot and data subcarriers. The Node B may use the channel estimates for MIMO scheduling, subband scheduling, and rate selection.
Abstract translation: 描述了在不消耗大量附加上行链路资源的情况下有效地导出上行链路信道估计的技术。 每当UE希望在上行链路上发送数据时，用户设备（UE）可以在请求信道（REQCH）上发送上行链路资源的请求。 UE可以在一组子载波上从多个天线发送REQCH，例如在数据子载波上发送REQCH数据，并在导频子载波上导频。 节点B可以接收该请求，基于接收到的导频符号估计导频子载波的复信道增益，并且基于信道增益估计来相干地解调所接收的数据符号。 节点B可以基于解调的数据符号来估计数据子载波的复信道增益，并且基于导频和数据子载波的信道增益估计导出每个UE天线的信道估计。 节点B可以使用用于MIMO调度，子带调度和速率选择的信道估计。
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473.发明申请TECHNIQUES FOR ENABLING ASYNCHRONOUS TRANSMISSIONS IN AN UNLICENSED RADIO FREQUENCY SPECTRUM BAND 有权在不经授权的无线电频谱带中实现异步传输的技术公开(公告)号：US20150245411A1
公开(公告)日：2015-08-27
申请号：US14553789
申请日：2014-11-25
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Wanshi Chen , Naga Bhushan , Peter Gaal , Kiran Kumar Somasundaram , Tao Luo , Yongbin Wei , Durga Prasad Malladi , Hao Xu , Tingfang Ji
CPC classification number: H04W76/28 , H04W16/14 , H04W36/22 , H04W72/0426 , H04W74/08
Abstract: Techniques are described for wireless communication. One method includes monitoring, by a first base station of a first operator, for clear channel assessment (CCA) exempt transmission (CET) timing information of a second base station of a second operator; identifying transmission timings of CETs of the second base station of the second operator based at least in part on the monitoring; and discontinuing transmissions of the first base station of the first operator during the transmission timings of the CETs of the second base station of the second operator. Transmissions of the second base station of the second operator may be asynchronous to transmissions of the first base station of the first operator.
Abstract translation: 技术描述为无线通信。 一种方法包括由第一运营商的第一基站监视第二运营商的第二基站的清除信道评估（CCA）免除传输（CET）定时信息; 至少部分地基于监视来识别第二运营商的第二基站的CET的传输定时; 以及在第二运营商的第二基站的CET的传输定时期间中止第一运营商的第一基站的传输。 第二运营商的第二基站的传输可以与第一运营商的第一基站的传输异步。
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公开(公告)号：US09084252B2
公开(公告)日：2015-07-14
申请号：US13723089
申请日：2012-12-20
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Hao Xu , Peter Gaal
CPC classification number: H04W72/042 , H04L1/0038 , H04L5/0044 , H04L5/0053 , H04L25/03866 , H04W72/044 , H04W72/082 , H04W88/085
Abstract: A method of wireless communication includes configuring a virtual cell identifier (ID) for a user equipment (UE). The method determines a first candidate for an enhanced physical downlink control channel (ePDCCH) for the UE. The method also determines a first virtual cell ID for the first candidate. Furthermore, the method scrambles the ePDCCH based on the first virtual cell ID and transmits, to the UE, the scrambled ePDCCH using the first candidate.
Abstract translation: 一种无线通信方法包括配置用户设备（UE）的虚拟小区标识符（ID）。 该方法确定用于UE的增强物理下行链路控制信道（ePDCCH）的第一候选。 该方法还确定第一候选的第一虚拟小区ID。 此外，该方法基于第一虚拟小区ID对ePDCCH进行加扰，并使用第一候选向UE发送加扰的ePDCCH。
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公开(公告)号：US20150195065A1
公开(公告)日：2015-07-09
申请号：US14661978
申请日：2015-03-18
Applicant: QUALCOMM Incorporated
Inventor： Xiliang Luo , Peter Gaal , Juan Montojo , Wanshi Chen , Hao Xu , Tao Luo , Kapil Bhattad
CPC classification number: H04L5/0023 , H04B7/0413 , H04B7/0456 , H04B7/0486 , H04L1/0031 , H04L1/1896 , H04L5/0053 , H04L5/0091 , H04L25/03343 , H04L25/03891 , H04W72/042
Abstract: A precoding scheme to accommodate user equipment (UEs) having higher Doppler speeds. In such transmission schemes, a different precoding matrix is applied to each orthogonal frequency division multiplex (OFDM) symbol in the transmission stream. Additionally, a downlink control message format is defined to handle assignment of multiple different transmission schemes using the same message format. The downlink control message format includes a control element in one of the message fields along with a set of parameters specifically applicable to the assigned transmission scheme. Based on the value of this control element, the UE sets the specific transmission scheme and determines a set of interpretation rules uniquely associated with that transmission scheme. Using the interpretation rules, the UE is able to read the set of parameters as applied to the selected transmission scheme.
Abstract translation: 一种用于适应具有更高多普勒速度的用户设备（UE）的预编码方案。 在这种传输方案中，将不同的预编码矩阵应用于传输流中的每个正交频分复用（OFDM）符号。 另外，下行链路控制消息格式被定义为使用相同的消息格式来处理多个不同传输方案的分配。 下行链路控制消息格式包括在消息字段之一中的控制元素以及特定适用于所分配的传输方案的一组参数。 基于该控制元件的值，UE设置特定的传输方案并且确定与该传输方案唯一相关联的一组解释规则。 使用解释规则，UE能够读取应用于所选传输方案的一组参数。
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Patent Agency Ranking
公开(公告)号：US09042287B2
公开(公告)日：2015-05-26
申请号：US13663162
申请日：2012-10-29
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Yongbin Wei , Rajat Prakash , Hao Xu
CPC classification number: H04W36/04 , H04W36/06 , H04W36/165 , H04W36/20 , H04W36/22
Abstract: Certain aspects of the present disclosure provide methods, apparatus, and computer-program products for improving network loading (e.g., by enabling inter-frequency handover and/or traffic offloading between neighboring base stations). In aspects, the proposed methods may include transmitting a beacon signal on a frequency (e.g., carrier frequency) other than the frequency currently used by a base station. The base station may select a cell identity (ID) and transmit one or more beacon signals on the frequency using the selected cell ID. The beacon signal may be used to decide whether or not to perform an inter-frequency handover.
Abstract translation: 本公开的某些方面提供了用于改善网络负载的方法，装置和计算机程序产品（例如，通过启用相邻基站之间的频间切换和/或流量卸载）。 在方面中，所提出的方法可以包括在除基站当前使用的频率之外的频率（例如，载波频率）上发送信标信号。 基站可以使用所选择的小区ID来选择小区标识（ID）并且在频率上发送一个或多个信标信号。 信标信号可以用于决定是否执行频率间切换。
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公开(公告)号：US20150124740A1
公开(公告)日：2015-05-07
申请号：US14502848
申请日：2014-09-30
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Peter Gaal , Tao Luo , Hao Xu , Durga Prasad Malladi , Naga Bhushan , Tingfang Ji
CPC classification number: H04W72/082 , H04L1/1835 , H04L5/001 , H04L27/0006 , H04W16/14
Abstract: Soft buffer management is disclosed in which a base station determines a first number of component carriers (CCs) monitored by a user equipment (UE) and determines a second number of CCs for partitioning a soft buffer for storing one or more unsuccessfully decoded data packets, wherein the second number is different than the first number. Various aspects provide for determination of the second number of CCs using clear channel assessment (CCA) clearance information with regard to unlicensed CCs used in the communication system.
Abstract translation: 公开了一种软缓冲器管理，其中基站确定由用户设备（UE）监控的第一数量的分量载波（CC），并且确定用于分配用于存储一个或多个未成功解码的数据分组的软缓冲器的第二数量的CC， 其中所述第二数量不同于所述第一数量。 关于在通信系统中使用的未许可的CC，使用明确的信道评估（CCA）许可信息来确定第二数量的CC。
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478.发明申请公开(公告)号：US20150110066A1
公开(公告)日：2015-04-23
申请号：US14518744
申请日：2014-10-20
Applicant: QUALCOMM Incorporated
Inventor： Peter Gaal , Naga Bhushan , Wanshi Chen , Hao Xu , Srinivas Yerramalli , Aleksandar Damnjanovic , Tao Luo , Durga Prasad Malladi , Yongbin Wei , Tingfang Ji
CPC classification number: H04W72/0453 , H04L27/0006 , H04W16/14 , H04W72/1226 , H04W74/0808
Abstract: Design of channel usage beacon signals (CUBS) in cooperative networks is disclosed. After detecting a clear channel assessment (CCA), a transmitter selects a configuration of a CUBS associated with the transmitter based on the CCA opportunity assigned to the network. The configuration of the CUBS associated with the transmitter may include a set of frequency subcarriers for CUBS transmissions. The transmitter transmits the CUBS according to transmission characteristics based on the CCA opportunity. In additional aspects, randomization may be introduced into the frequency subcarrier allocations of CUBS configurations where the transmitter receives assignment of virtual frequency subcarriers for CUBS transmissions and maps the virtual subcarrier to physical frequency subcarriers for CUBS transmission. Additional aspects allow for pattern offset values to be determined independently from the transmitter cell identifier. In such aspects, the assigned pattern offsets may be cell identifier-independent, while others may be cell identifier-dependent.
Abstract translation: 披露了合作网络中信道使用信标信号（CUBS）的设计。 在检测到清晰的信道评估（CCA）之后，发射机基于分配给网络的CCA机会选择与发射机相关联的CUBS的配置。 与发射机相关联的CUBS的配置可以包括用于CUBS传输的一组频率子载波。 发射机根据CCA机会的传输特性发射CUBS。 在另外的方面，可以将随机化引入到CUBS配置的频率子载波分配中，其中发射机接收CUBS传输的虚拟频率子载波的分配，并将虚拟子载波映射到用于CUBS传输的物理频率子载波。 附加方面允许独立于发射机小区标识符来确定模式偏移值。 在这些方面，分配的模式偏移可以是与小区标识符无关的，而另一些可以是小区标识符相关的。
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公开(公告)号：US20150103715A1
公开(公告)日：2015-04-16
申请号：US14494956
申请日：2014-09-24
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Hao Xu , Peter Gaal , Tao Luo , Srinivas Yerramalli , Tingfang Ji , Aleksandar Damnjanovic , Yongbin Wei , Naga Bhushan , Durga Prasad Malladi , Ravi Teja Sukhavasi
CPC classification number: H04W72/042 , H04L5/001 , H04L5/0023 , H04L5/0044 , H04L5/0053 , H04L5/0055 , H04L5/0082 , H04L5/0091 , H04L69/14 , H04W16/14 , H04W52/0209 , H04W74/02 , H04W76/15 , Y02D70/00 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146 , Y02D70/26
Abstract: Methods, apparatuses, systems, and devices are described for wireless communication. In one method, a control format indicator value for a frame may be received over a physical carrier in a shared spectrum. Based on the control format indicator value, a number of subframes of the frame to be used by a base station for downlink transmissions over the physical carrier may be determined. The control format indicator value may indicate an end of transmission, if data is to be transmitted during the frame, a number of subframes to be used for transmission, or whether the current subframe is the final subframe used for transmission. In some cases, a user equipment (UE) may use the control format indicator value to determine a sleep schedule. Further, ACK/NACK transmissions by a UE may be scheduled based on the control format indicator value.
Abstract translation: 描述了用于无线通信的方法，设备，系统和设备。 在一种方法中，可以通过共享频谱中的物理载波来接收帧的控制格式指示符值。 基于控制格式指示符值，可以确定要由基站用于物理载波上的下行链路传输的帧的多个子帧。 控制格式指示符值可以指示传输的结束，如果要在帧期间发送数据，要用于发送的子帧的数量，或者当前子帧是否是用于传输的最后的子帧。 在一些情况下，用户设备（UE）可以使用控制格式指示符值来确定睡眠调度。 此外，可以基于控制格式指示符值来调度UE的ACK / NACK传输。
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公开(公告)号：US08948111B2
公开(公告)日：2015-02-03
申请号：US13632563
申请日：2012-10-01
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Peter Gaal , Hao Xu
IPC: H04W4/00
CPC classification number: H04W72/0406 , H04B7/024 , H04L5/0035 , H04L5/0055 , H04W72/042 , H04W88/085
Abstract: Management and distribution of PUCCH resources between first and second eNBs in a CoMP system is disclosed, in which the control and data transmission for a given UE is decoupled. The decoupling of the control and data transmissions allows the first eNB to transmit control information while the second eNB or remote radio head (RRH) transmits data. In such systems, the first eNB communicates a dynamic PUCCH parameter to UEs served in a decoupled manner. The dynamic PUCCH parameter allows the UE to determine uplink communications for the dynamic PUCCH region transmitted to the second eNB in such a position that will not overlap or cause interference with the dynamic PUCCH regions reserved by the first eNB.
Abstract translation: 公开了在CoMP系统中的第一和第二eNB之间的PUCCH资源的管理和分配，其中给定UE的控制和数据传输被去耦合。 控制和数据传输的去耦允许第一eNB在第二个eNB或远程无线电头（RRH）传输数据时发送控制信息。 在这样的系统中，第一eNB将动态PUCCH参数传送到以解耦方式服务的UE。 动态PUCCH参数允许UE在不会与由第一eNB保留的动态PUCCH区域重叠或引起干扰的位置处确定发送到第二eNB的动态PUCCH区域的上行链路通信。
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