公开(公告)号：JP2012105321A

公开(公告)日：2012-05-31

申请号：JP2011286119

申请日：2011-12-27

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： XU HAO ,  MALLADI DURGA PRASAD

IPC: H04W16/28 ,  H04J1/00 ,  H04J11/00 ,  H04J99/00 ,  H04W52/16 ,  H04W52/32 ,  H04W52/38 ,  H04W72/12

CPC classification number: H04B7/0413 ,  H04B7/0613 ,  H04B7/0684 ,  H04W52/16 ,  H04W52/325

Abstract: PROBLEM TO BE SOLVED: To facilitate pilot signal design, power control, data rate determination, and channel assignment in the reverse link of a wireless communication system for dynamic scheduling and joint operation in SIMO, SU-MIMO, and MU-MIMO.SOLUTION: Transmission of pilot signals is based on periodic transmissions of multiple sounding reference sequences. Power control is based on a reference signal at a predetermined power spectral density (PSD) level, and on an offset PSD determined and signaled based on an antenna that transmits the reference signal, other cell interference, and power amplifier headroom. PSD levels for SIMO/MIMO data transmissions are determined based on channel estimates and the predetermined PSD and offset PSD. Communication resources are conveyed through a channel assignment with an overhead that depends on the maximum multiplexing order of the estimated channel.

Abstract translation: 要解决的问题：为了在无线通信系统的反向链路中促进SIMO，SU-MIMO和MU-MIMO中的动态调度和联合操作的导频信号设计，功率控制，数据速率确定和信道分配 。 导航信号的传输基于多个探测参考序列的周期性传输。 功率控制基于在预定功率谱密度（PSD）级别的参考信号，以及基于发送参考信号，其他小区干扰和功率放大器余量的天线确定和发信号的偏移PSD。 基于信道估计和预定PSD和偏移PSD确定用于SIMO / MIMO数据传输的PSD电平。 通过信道分配来传送通信资源，开销取决于估计信道的最大复用顺序。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012075111A

公开(公告)日：2012-04-12

申请号：JP2011221082

申请日：2011-10-05

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MONTOJO JUAN ,  MALLADI DURGA PRASAD

IPC: H04W68/02 ,  H04W24/10 ,  H04W68/00

CPC classification number: H04L5/0091 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/006 ,  H04L5/0064 ,  H04L25/03866 ,  H04W68/025

Abstract: PROBLEM TO BE SOLVED: To provide a method and apparatus for efficiently paging user equipment (UE) in a wireless communication system.SOLUTION: The apparatus comprises: at least one processor configured to map user equipment (UE) to a paging occasion based on a predetermined number of least significant bits (LSBs) of a UE identifier (ID) that identifies the UE so that a plurality of UE with the same partial UE IDs are mapped to different paging occasions, and to send a paging indicator and a partial UE ID for a recipient UE in a paging occasion for the recipient UE; and a memory coupled to the at least one processor.

Abstract translation: 解决的问题：提供一种在无线通信系统中有效地寻呼用户设备（UE）的方法和装置。 该装置包括：至少一个处理器，被配置为基于识别UE的UE标识符（ID）的预定数量的最低有效位（LSB）将用户设备（UE）映射到寻呼时机，使得 具有相同部分UE ID的多个UE被映射到不同的寻呼时机，并且在接收方UE的寻呼时机中发送寻呼指示符和接收方UE的部分UE ID; 以及耦合到所述至少一个处理器的存储器。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012034413A

公开(公告)日：2012-02-16

申请号：JP2011234959

申请日：2011-10-26

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： TAO RUO ,  DAMNJANOVIC ALEKSANDAR ,  MALLADI DURGA PRASAD

IPC: H04B1/707 ,  H04B1/7107 ,  H04B7/04 ,  H04J99/00

CPC classification number: H04L25/0202 ,  H04B1/71072 ,  H04L25/0224 ,  H04L25/0226 ,  H04L25/0238

Abstract: PROBLEM TO BE SOLVED: To perform channel estimation for wireless communication.SOLUTION: Techniques for deriving channel estimates with different channel estimation filters are described. In one scheme, a filter selection metric is determined for a signal to be recovered, a channel estimation filter is selected based on the filter selection metric, and a channel estimate is derived with the selected channel estimation filter. In another scheme, a first channel estimate is derived with a first channel estimation filter having a first filter response, a first signal is recovered with the first channel estimate, and interference due to the first signal is estimated and removed. A second channel estimate is derived with a second channel estimation filter having a second filter response that is different from the first filter response.

Abstract translation: 要解决的问题：执行无线通信的信道估计。

解决方案：描述了用不同信道估计滤波器导出信道估计的技术。 在一个方案中，为要恢复的信号确定滤波器选择度量，基于滤波器选择度量来选择信道估计滤波器，并且使用所选择的信道估计滤波器导出信道估计。 在另一方案中，利用具有第一滤波器响应的第一信道估计滤波器导出第一信道估计，用第一信道估计恢复第一信号，并且估计和去除由于第一信号引起的干扰。 使用具有与第一滤波器响应不同的第二滤波器响应的第二信道估计滤波器导出第二信道估计。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011176808A

公开(公告)日：2011-09-08

申请号：JP2011024030

申请日：2011-02-07

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MALLADI DURGA PRASAD ,  BLANZ JOSEF ,  WEI YONGBIN

IPC: H04B7/005 ,  H04B1/711 ,  H04B3/06 ,  H04L25/03

CPC classification number: H04L25/03019

Abstract: PROBLEM TO BE SOLVED: To provide a communication receiver having an equalizer length which is adaptively adjusted.
SOLUTION: In a communication system, a method for estimating a transmitted signal is disclosed. A communication signal is received. A delay-power analyzer analyzes the communication signal. A delay spread is then estimated from the information obtained from the delay-power analyzer. A new equalizer filter length is determined, based on the delay spread estimated. An equalizer is configured to use the new equalizer filter length.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种具有自适应调整的均衡器长度的通信接收机。 解决方案：在通信系统中，公开了一种估计发射信号的方法。 接收通信信号。 延迟功率分析仪分析通信信号。 然后根据从延迟功率分析器获得的信息估计延迟扩展。 基于估计的延迟扩展，确定新的均衡器滤波器长度。 均衡器配置为使用新的均衡器过滤器长度。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011151844A

公开(公告)日：2011-08-04

申请号：JP2011066335

申请日：2011-03-24

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MALLADI DURGA PRASAD ,  GAAL PETER ,  WEI YONGBIN

IPC: H04J13/00

CPC classification number: H04L1/0029 ,  H04L1/0003 ,  H04L1/0025

Abstract: PROBLEM TO BE SOLVED: To provide an HSDPA system with reduced inter-user interference.
SOLUTION: In a wireless network (100) using user equipment devices (130) corresponding to HSDPA, a base transceiver station (120) transmits to each UE corresponding to HSDPA information regarding allocation of HSDPA codes and associated modulation techniques for other UEs corresponding to HSPDA. Using this additional control information, each UE configures a decision feedback filter of its equalizer to reduce inter-user interference. The additional control information may be transmitted in a packet (300) that includes a CRC portion (310) with the packet's CRC masked by a common ID, which is known to the UE corresponding to HSDPA. To reduce the number of bits needed to transmit the additional control information, the HSDPA codes used with a particular modulation technique are allocated consecutively. For each modulation technique, only the beginning code and the total number of codes need be known to the UE. The number of codes used with each modulation technique may be allowed to change once in several TTIs.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供具有减少的用户间干扰的HSDPA系统。 解决方案：在使用对应于HSDPA的用户设备（130）的无线网络（100）中，基站收发器（120）向与每个UE相对应的HSDPA发送关于HSDPA代码分配和相关调制技术的其他UE的信息 对应于HSPDA。 使用该附加控制信息，每个UE配置其均衡器的判决反馈滤波器以减少用户间干扰。 可以在包括CRC部分（310）的分组（300）中发送附加控制信息，其中分组的CRC被公共ID掩蔽，该公共ID对应于HSDPA是对应的。 为了减少发送附加控制信息所需的比特数，与特定调制技术一起使用的HSDPA码被连续分配。 对于每个调制技术，只有起始码和代码总数需要为UE所知。 可以允许每个调制技术使用的代码数量在几个TTI中改变一次。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011125030A

公开(公告)日：2011-06-23

申请号：JP2010287683

申请日：2010-12-24

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： MALLADI DURGA PRASAD ,  KIM BYOUNG-HOON ,  WEI YONGBIN

IPC: H04B1/7097 ,  H04B7/005

CPC classification number: H04L25/03006 ,  H04L25/022 ,  H04L25/0228 ,  H04L2025/03375 ,  H04L2025/03783

Abstract: PROBLEM TO BE SOLVED: To simplify computational complexity in correcting a signal transmitted via a channel by estimating the behavior of the channel.
SOLUTION: The method includes receiving a signal transmitted over a channel. The received signal includes a known signal and an information signal. The method further includes determining at least one indicator indicative of channel characteristics based on at least a portion of the partly known signal. The method further includes generating a first value indicative of the information signal based on at least one indicator being partly channel characteristics. The first value includes an error signal. The method further includes removing the error signal from the first estimate of the signal based on at least the portion of the partly known signal.
COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：通过估计信道的行为来简化校正通过信道发送的信号的计算复杂度。 解决方案：该方法包括接收通过信道发送的信号。 所接收的信号包括已知信号和信息信号。 该方法还包括基于部分已知信号的至少一部分来确定指示信道特性的至少一个指示符。 该方法还包括基于部分信道特性的至少一个指示符来生成指示信息信号的第一值。 第一个值包括一个错误信号。 该方法还包括至少部分已知信号的部分从信号的第一估计中去除误差信号。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011109658A

公开(公告)日：2011-06-02

申请号：JP2010254736

申请日：2010-11-15

Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

Inventor： SMEE JOHN E ,  WALTON RODNEY J ,  MALLADI DURGA PRASAD

IPC: H04W72/04 ,  H04B7/06 ,  H04B7/08 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26

CPC classification number: H04L5/0039 ,  H04B7/0669 ,  H04B7/0854 ,  H04L1/0017 ,  H04L1/0071 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0226 ,  H04L25/03343 ,  H04L25/03866 ,  H04L27/2602 ,  H04L27/261

Abstract: PROBLEM TO BE SOLVED: To provide pilot transmission schemes suitable for use in wireless multi-carrier (e.g., OFDM) communication systems. SOLUTION: Pilot transmission schemes may utilize frequency, time or both frequency and time orthogonality to achieve orthogonality among the pilots transmitted by multiple base stations on the downlink. Frequency orthogonality is achieved by transmitting pilots on disjoint sets of subbands. Time orthogonality is achieved by transmitting pilots using a plurality of different orthogonal codes. The pilots may also be scrambled with a plurality of different scrambling codes, which are used to randomize pilot interference and to enable identification of transmitters of these pilots. Further, pilot interference is estimated and then subtracted from received symbols to obtain pilot-canceled symbols having improved quality. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供适用于无线多载波（例如，OFDM）通信系统的导频传输方案。 解决方案：导频传输方案可以利用频率，时间或频率和时间正交性来实现在下行链路上由多个基站发送的导频之间的正交性。 通过在不相交的子带集合上发送导频来实现频率正交性。 通过使用多个不同的正交码来发送导频来实现时间正交性。 导频还可以用多个不同的扰码进行加扰，这些扰码用于随机化导频干扰并且能够识别这些飞行员​​的发射机。 此外，估计导频干扰，然后从接收到的符号中减去，以获得具有改进质量的导频消除符号。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：EP3295734A1

公开(公告)日：2018-03-21

申请号：EP16714677

申请日：2016-03-18

Applicant: QUALCOMM INC

Inventor： MALLADI DURGA PRASAD ,  WANG JUN ,  WEI YONGBIN ,  PATEL SHIMMAN ,  DAMNJANOVIC ALEKSANDAR ,  GRIOT MIGUEL ,  ZHANG XIAOXIA

IPC: H04W72/00

CPC classification number: H04W4/06 ,  H04L12/189 ,  H04W16/14 ,  H04W72/005

Abstract: A method, an apparatus, and a computer-readable medium for delivering content to end user via shared broadcast are provided. The apparatus may be a UE that determines to acquire a MBMS service. The UE tunes to a frequency provided by a first MNO to which the UE is not a subscriber in order to receive the MBMS service via a carrier shared by the first MNO and at least one other MNO. The UE receives the MBMS service on the frequency via the carrier shared by the first MNO and the at least one other MNO. The shared carrier may have a common SFN timing with respect to the first MNO and the at least one other MNO. The shared carrier may include a shared MBMS SDL carrier. The shared carrier may include a standalone shared carrier for receiving the MBMS service and control information associated with the MBMS service.

公开(公告)号：EP2944047B1

公开(公告)日：2017-05-03

申请号：EP14702381

申请日：2014-01-13

Applicant: QUALCOMM INC

Inventor： LUO TAO ,  MALLADI DURGA PRASAD ,  WEI YONGBIN ,  CHEN WANSHI ,  DAMNJANOVIC ALEKSANDAR

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0044 ,  H04L5/0048 ,  H04W72/042

公开(公告)号：EP2963842A1

公开(公告)日：2016-01-06

申请号：EP15175503

申请日：2013-04-02

Applicant: QUALCOMM INC

Inventor： MALLADI DURGA PRASAD ,  WEI YONGBIN ,  DAMJANOVIC ALEKSANDAR ,  BHUSHAN NAGA

IPC: H04B7/02 ,  H04L1/16 ,  H04L5/00

CPC classification number: H04W36/18 ,  H04L1/1812 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0057 ,  H04L2001/0092 ,  H04W16/32 ,  H04W72/0453 ,  H04W72/1278 ,  H04W72/1284 ,  H04W76/02 ,  H04W84/047 ,  H04W88/02 ,  H04W88/08

Abstract: A communication environment with carrier aggregation (CA,) is disclosed in which a UE is configured for communication at a first time with a first network node via a primary component carrier (PCC) and a second network node via a secondary CC (SCC). At a second time, the UE is configured for communication with a third network node via the SCC at a second time. The UE maintains communication with the first network node via the PCC without triggering handover at the UE during the establishing communication with the third network node.

Abstract translation: 公开了一种具有载波聚合（CA）的通信环境，其中UE被配置用于经由主分量载波（PCC）和第二网络节点经由次CC（SCC）与第一网络节点在第一时间进行通信。 在第二时间，UE被配置为在第二时间经由SCC与第三网络节点进行通信。 在与第三网络节点的建立通信期间，UE经由PCC保持与第一网络节点的通信，而不触发UE处的切换。