公开(公告)号：JP2005006343A

公开(公告)日：2005-01-06

申请号：JP2004199195

申请日：2004-07-06

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

Inventor： AGRAWAL AVNEESH ,  BUTLER BRIAN K

IPC: H04B1/04 ,  H04B7/216 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/18 ,  H04Q7/38

CPC classification number: H04J13/0048 ,  H04J13/18

Abstract: PROBLEM TO BE SOLVED: To provide a method for two or more transmitters to share a single code division multiplex (CDM) system, and code division multiple access (CDMA) system.
SOLUTION: A set of orthogonal channelizing codes is generated, and each transmitter is allocated the orthogonal channelizing codes and pseudonoise polynomials in a predetermined manner. The transmitters channelize each user signal using an orthogonal channelizing code, and spread each user signal using a pseudonoise spreading code. Each transmitter employs the same PN (pseudonoise) spreading codes and time offsets. No one orthogonal channelizing code is assigned to more than two transmitters during the time period in which they are sharing a CDM channel. The spread signals are summed at each transmitter prior transmission as a composite signal. The offsets are time-precorrected to ensure time alignment at the receivers. The frequencies of signals are precorrected to ensure frequency alignment at the receivers.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种用于两个或多个发射机共享单个码分多路复用（CDM）系统和码分多址（CDMA）系统的方法。 解决方案：生成一组正交信道化码，并且以预定的方式为每个发射机分配正交信道化码和伪噪声多项式。 发射机使用正交信道化码对每个用户信号进行信道化，并且使用伪噪声扩展码来扩展每个用户信号。 每个发射机采用相同的PN（伪噪声）扩展码和时间偏移。 在共享CDM信道的时间段期间，没有一个正交信道化码被分配给两个以上的发射机。 扩展信号在每个发射机之前的传输中相加，作为复合信号。 补偿是时间预处理的，以确保接收器的时间对齐。 信号的频率被预先校正，以确保接收器处的频率对准。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2013255247A

公开(公告)日：2013-12-19

申请号：JP2013147756

申请日：2013-07-16

Applicant: QUALCOMM INC

Inventor： ALEXEI Y GOROKHOV ,  AGRAWAL AVNEESH

IPC: H04W28/16 ,  H04W16/28 ,  H04W72/04

Abstract: PROBLEM TO BE SOLVED: To provide techniques for mitigating interference in a wireless communication system.SOLUTION: Pertinent transmission parameters for a served UE may be sent to at least one interfered UE to support interference mitigation. In one design, information for at least one transmission parameter for a data transmission sent by a first cell to a first UE may be transmitted to at least one UE served by a second cell to enable at least one UE to perform interference mitigation for the data transmission sent by the first cell to the first UE. A cell may send transmission parameters for a UE via a pilot.

公开(公告)号：JP2013219794A

公开(公告)日：2013-10-24

申请号：JP2013108203

申请日：2013-05-22

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

Inventor： GOROKHOV ALEXEI ,  AGRAWAL AVNEESH

IPC: H04W72/04 ,  H04B7/26 ,  H04J1/00 ,  H04J11/00 ,  H04L5/02 ,  H04L5/06 ,  H04L27/26 ,  H04Q7/36 ,  H04Q7/38 ,  H04W16/10

CPC classification number: H04L5/0046 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0042 ,  H04L5/06

Abstract: PROBLEM TO BE SOLVED: To provide techniques for flexible bandwidth allocation that reduces interference.SOLUTION: A spectrum may have a first number of segments, each segment having a second number of clusters associated with a certain sector/cell. One aspect comprises the acts of fixedly assigning a first group of clusters to a first group of users such that the first group of users stay fixed to the assigned clusters, and assigning a second group of clusters to a second group of users such that the second group of users hop within the assigned clusters.

Abstract translation: 要解决的问题：提供减少干扰的灵活带宽分配的技术。解决方案：频谱可以具有第一数量的段，每个段具有与特定扇区/小区相关联的第二数量的簇。 一个方面包括将第一组聚类固定地分配给第一组用户的动作，使得第一组用户保持固定到所分配的集群，以及将第二组集群分配给第二组用户，使得第二组 用户组在分配的集群中跳转。

公开(公告)号：JP2013070393A

公开(公告)日：2013-04-18

申请号：JP2012244244

申请日：2012-11-06

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

Inventor： AGRAWAL AVNEESH

IPC: H04B1/715 ,  H04J1/00 ,  H04J11/00 ,  H04W36/18 ,  H04W72/08

CPC classification number: H04L27/2601 ,  H04B1/715 ,  H04B2001/7152 ,  H04W24/00 ,  H04W28/04 ,  H04W36/18 ,  H04W72/04

Abstract: PROBLEM TO BE SOLVED: To provide techniques to support soft handoff in a frequency hopping OFDMA system.SOLUTION: To non-handoff users, information channels are assigned by their sole sectors. To soft-handoff users, information channels are assigned by their "serving" sectors. For each sector, the information channels assigned to the non-handoff users are orthogonal to one another and may or may not be orthogonal to the information channels assigned to the soft-handoff users. Each sector processes its received signal and recovers data transmission from the non-handoff users of that sector. Each sector then estimates interference due to the non-handoff users and cancels the interference from the received signal.

Abstract translation: 要解决的问题：提供在跳频OFDMA系统中支持软切换的技术。 解决方案：对于非切换用户，信息通道由其唯一部门分配。 为了软切换用户，信息通道由其“服务”扇区分配。 对于每个扇区，分配给非切换用户的信息信道彼此正交，并且可以或可以不与分配给软切换用户的信息信道正交。 每个扇区处理其接收到的信号并恢复来自该扇区的非切换用户的数据传输。 然后每个扇区估计由于非切换用户造成的干扰，并且从接收到的信号中消除干扰。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2012178842A

公开(公告)日：2012-09-13

申请号：JP2012087396

申请日：2012-04-06

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

Inventor： AGRAWAL AVNEESH ,  TEAGUE EDWARD HARRISON

IPC: H04J11/00 ,  H04B1/692 ,  H04B1/713 ,  H04J1/00 ,  H04J3/00 ,  H04J4/00 ,  H04L5/02 ,  H04L27/26

CPC classification number: H04L27/2613 ,  H04B1/713 ,  H04B2201/70701 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0041 ,  H04L5/0051 ,  H04L25/0232 ,  H04L25/03866 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/03509 ,  H04L2025/03789

Abstract: PROBLEM TO BE SOLVED: To provide techniques of supporting fast frequency hopping with a code division multiplexed pilot in a multi-carrier communication system.SOLUTION: Each transmitter in the system transmits a wideband pilot on all subbands to allow a receiver to estimate the entire channel response at the same time. The wideband pilot for each transmitter is generated using direct sequence spread spectrum processing and based on a pseudo-random number code assigned to that transmitter. This allows the receiver to individually identify and recover multiple wideband pilots transmitted concurrently by multiple transmitters. For a time division multiplexed/code division multiplexed pilot transmission scheme, each transmitter transmits the wideband pilot in bursts. For a continuous code division multiplexed pilot transmission scheme, each transmitter continuously transmits the wideband pilot, albeit at a low transmit power level.

Abstract translation: 要解决的问题：提供在多载波通信系统中用码分多路复用导频支持快速跳频的技术。 解决方案：系统中的每个发射机在所有子带上发送宽带导频，以允许接收机同时估计整个信道响应。 每个发射机的宽带导频使用直接序列扩频处理并基于分配给该发射机的伪随机数码来产生。 这允许接收机单独地识别和恢复由多个发射机同时传输的多个宽带导频。 对于时分复用/码分复用导频传输方案，每个发射机以突发方式发送宽带导频。 对于连续码分多路复用导频传输方案，每个发射机连续发射宽带导频，尽管传输功率水平低。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012165416A

公开(公告)日：2012-08-30

申请号：JP2012071419

申请日：2012-03-27

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

Inventor： PALANKI RAVI ,  JEREMY H LIN ,  KHANDEKAR AAMOD ,  ALEXEI GOROKHOV ,  AGRAWAL AVNEESH

IPC: H04L1/00 ,  H03M13/23 ,  H03M13/29

CPC classification number: H04L1/0007 ,  H04L1/0009 ,  H04L1/0021 ,  H04L1/0042 ,  H04L1/1812 ,  H04L1/1822

Abstract: PROBLEM TO BE SOLVED: To provide techniques for encoding and decoding data.SOLUTION: Multiple code rates for a forward error correction (FEC) code may be supported, and a suitable code rate may be selected based on packet size. A transmitter may obtain at least one threshold to use for code rate selection, determine a packet size to use for data transmission, and select a code rate among the multiple FEC code rates based on the packet size and the at least one threshold. Multiple FEC codes of different types (e.g., Turbo, LDPC, and convolutional codes) may be supported, and a suitable FEC code may be selected based on packet size. The transmitter may obtain at least one threshold to use for FEC code selection and may select an FEC code among the multiple FEC codes based on the packet size and the at least one threshold.

Abstract translation: 要解决的问题：提供用于对数据进行编码和解码的技术。 解决方案：可以支持用于前向纠错（FEC）码的多个码率，并且可以基于分组大小来选择合适的码率。 发射机可以获得用于码率选择的至少一个阈值，确定用于数据传输的分组大小，以及基于分组大小和至少一个阈值来选择多个FEC码率中的码率。 可以支持不同类型的多个FEC码（例如Turbo，LDPC和卷积码），并且可以基于分组大小来选择合适的FEC码。 发射机可以获得用于FEC码选择的至少一个阈值，并且可以基于分组大小和至少一个阈值来选择多个FEC码中的FEC码。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012109963A

公开(公告)日：2012-06-07

申请号：JP2011243724

申请日：2011-11-07

Applicant: QUALCOMM INC

Inventor： KHANDEKAR AAMOD ,  AGRAWAL AVNEESH ,  GORE DHANANJAY ASHOK

IPC: H04J99/00 ,  H04B7/04 ,  H04J11/00 ,  H04J13/18

Abstract: PROBLEM TO BE SOLVED: To multiply pilot symbols to be transmitted from each of a plurality of antenna groups to improve channel estimation for different sectors.SOLUTION: Pilot symbols transmitted from different sectors of the same base station are multiplied using the same cell specific scrambling code as well as a first code having low cross correlation and a second code having low cross correlation. The second code is constant over the length of the first code, but may vary for repetitions of the first code.

公开(公告)号：JP2012100280A

公开(公告)日：2012-05-24

申请号：JP2011264914

申请日：2011-12-02

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

Inventor： AGRAWAL AVNEESH ,  KHANDEKAR AAMOD ,  GOROKHOV ALEXEI ,  TEAGUE EDWARD HARRISON

IPC: H04W72/04 ,  H04W28/16

CPC classification number: H04W72/042 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0096 ,  H04W72/0486

Abstract: PROBLEM TO BE SOLVED: To optimize use of system resources through supplemental assignments for dynamically decrementing resource assignments to mobile devices in a wireless network environment.SOLUTION: A method comprises: transmitting initial resource assignment(s) to at least one mobile device (1002); determining whether the at least one mobile device requires additional resources or requires resource de-allocation (1004); and, if the resource de-allocation is required, generating a supplemental assignment that de-assigns the resources and transmitting the generated supplemental assignment to the at least one mobile device (1006). Supplemental assignments can be generated based on information related to mobile device need and resource availability. Moreover, resource assignments may be retained for a mobile device.

Abstract translation: 要解决的问题：通过补充分配优化系统资源的使用，以在无线网络环境中动态地减少对移动设备的资源分配。 解决方案：一种方法包括：向至少一个移动设备（1002）发送初始资源分配; 确定所述至少一个移动设备是否需要额外的资源或需要资源解除分配（1004）; 并且如果需要资源去分配，则产生一个辅助分配，该辅助分配去分配资源，并将生成的补充分配发送给至少一个移动设备（1006）。 可以根据与移动设备需求和资源可用性相关的信息生成补充分配。 此外，可以为移动设备保留资源分配。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012075109A

公开(公告)日：2012-04-12

申请号：JP2011219589

申请日：2011-10-03

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

Inventor： AGRAWAL AVNEESH ,  KHANDEKAR AAMOD ,  KADOUS TAMER ,  SAMPATH HEMANTH

IPC: H04J99/00 ,  H04B7/04 ,  H04J11/00 ,  H04L1/16 ,  H04W16/28 ,  H04W24/10 ,  H04W28/04

CPC classification number: H04B7/0697 ,  H04L1/0001 ,  H04L1/0006 ,  H04L1/0026 ,  H04L1/1812

Abstract: PROBLEM TO BE SOLVED: To provide a method of performing rank step-down for MIMO SCW (single code word) design employing HARQ.SOLUTION: Systems and methods are described that facilitate reducing rank (e.g., of a user device) as a number of transmissions from the user increases. Such rank step-down can improve interference resistance and facilitate maintaining code rate despite transmission propagation. Rank step-down information is encoded along with CQI information to generate a 5-bit CQI signal that can facilitate updating a user's rank upon each CQI transmission (approximately every 5 msec). The described systems and/or methods can be employed in a single code word (SCW) wireless communication environment with a hybrid automatic request (HARQ) protocol.

Abstract translation: 要解决的问题：提供一种使用HARQ执行MIMO SCW（单码字）设计的秩降级的方法。 解决方案：描述了随着来自用户的多个传输增加而有助于减少等级（例如，用户设备）的系统和方法。 这种级别降低可以改善抗干扰性，并且有助于保持代码率，尽管传输传播。 等级降级信息与CQI信息一起被编码，以生成可以有助于在每次CQI传输（大约每5毫秒）更新用户等级的5比特CQI信号。 所描述的系统和/或方法可以用于具有混合自动请求（HARQ）协议的单个码字（SCW）无线通信环境中。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2011147142A

公开(公告)日：2011-07-28

申请号：JP2011024044

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： JULIAN DAVID JONATHAN ,  AGRAWAL AVNEESH ,  TEAGUE EDWARD HARRISON

IPC: H04L1/16 ,  H04L1/00 ,  H04W28/04

CPC classification number: H04L1/1867 ,  H04L1/1819 ,  H04L1/20

Abstract: PROBLEM TO BE SOLVED: To reduce overhead in responding to an ACK/NACK message, in a multiple access system applied to a packet re-transmission mechanism such as an ARQ. SOLUTION: This method is equipped with: reception of data representing ACK or data representing NACK; measurement of quality of the received data; determination of whether a channel is degraded by using the quality measurement value of the received data as a function; neglect of the received data representing ACK or data representing NACK when the channel is determined to be degraded; and transmission of a message representing stop of transmission of the data representing ACK and/or the data representing NACK when the channel degradation is determined and the response to the received data is issued. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：在应用于诸如ARQ的分组重传机制的多址系统中，减少响应ACK / NACK消息的开销。 解决方案：该方法配备有：表示ACK的数据的接收或表示NACK的数据; 测量接收数据的质量; 通过使用接收到的数据的质量测量值作为函数来确定信道是否劣化; 当确定信道被降级时，忽略表示ACK的接收数据或表示NACK的数据; 并且当确定信道劣化并且发出对接收到的数据的响应时，发送表示代表ACK的数据的传输的消息和/或表示NACK的数据的消息的传输。 版权所有（C）2011，JPO＆INPIT