公开(公告)号：EP1516435A1

公开(公告)日：2005-03-23

申请号：EP03734508.9

申请日：2003-06-10

Applicant: QUALCOMM Incorporated

Inventor： AMERGA, Messay ,  NAGPAL, Vikas ,  NEW, Wen Jing ,  RAO, Subramanya, P. ,  SUBRAHMANYA, Parvathanathan

IPC: H04B1/707 ,  H04Q7/38

CPC classification number: H04W48/16 ,  H04B1/707 ,  H04B1/70735 ,  H04B17/27 ,  H04B17/318 ,  H04B17/382 ,  H04L2027/0034 ,  H04W24/00 ,  H04W52/0245 ,  Y02D70/1222 ,  Y02D70/40

Abstract: Techniques for reducing the time required for frequency scan in acquisition are disclosed. In one aspect, received power measurements are made at one or more of the possible carrier frequencies and system search is performed on one or more of those frequencies when the power measurement exceeds a threshold. In another aspect, the power is measured at one or more frequencies in a band of frequencies surrounding a frequency at which the measured power exceeded a threshold. If the measured power at one or more of the frequencies in the band exceeds a second threshold, a system search is performed at one or more of those frequencies. In yet another aspect, frequencies meeting certain criteria are sorted in order of measured power prior to system search or further power measurement, and subsequent processing is performed in order of descending measured power. Various other aspects are also presented. These aspects have the benefit of reducing acquisition time, which results in faster system access and allows for more efficient use of system resources.

公开(公告)号：EP1472805A1

公开(公告)日：2004-11-03

申请号：EP03710787.7

申请日：2003-01-29

Applicant: Qualcomm, Incorporated

Inventor： SUBRAHMANYA, Parvathanathan ,  CLARK, Kevin J.

IPC: H04B1/707 ,  H04B7/06

CPC classification number: H04B1/7085 ,  H04B7/0613 ,  H04B2201/70701 ,  Y02D70/40 ,  Y02D70/444

Abstract: Techniques for time tracking diversity pilots are disclosed. In one aspect, an early and a late energy calculation is made on each incoming symbol using a first pilot sequence for despreading. The difference between the two energies is used to drive a tracking loop, which generates a time reference for producing a first pilot estimate and a second pilot estimate, the two estimates used for demodulating data. In another aspect, the early and late energies are made including a plurality of incoming symbols, the number of which corresponds to the number of symbols in a run of positive or negative values in an orthogonalizing sequence. The orthogonalizing sequence is used to generate a second pilot sequence from a first pilot sequence, the resulting second pilot sequence being orthogonal to the first. These aspects have the benefit of simplifying the hardware or processing steps required for transmit diversity time tracking, resulting in cost savings, power savings, simplicity of design, and the like.

Abstract translation: 公开了用于时间跟踪分集导频的技术。 在一个方面，使用第一导频序列对每个输入符号进行早期和晚期能量计算以进行解扩。 两个能量之间的差异被用于驱动跟踪环路，其产生用于产生用于解调数据的两个估计的第一导频估计和第二导频估计的时间基准。 在另一方面，早期和晚期能量被制成包括多个输入符号，其数目对应于在正交化序列中的正值或负值的运行中的符号数量。 正交化序列用于从第一导频序列生成第二导频序列，所得到的第二导频序列与第一导频序列正交。 这些方面具有简化发送分集时间跟踪所需的硬件或处理步骤的优点，从而节省成本，节省功率，简化设计等。

公开(公告)号：EP3633911A1

公开(公告)日：2020-04-08

申请号：EP19212491.5

申请日：2017-07-12

Applicant: QUALCOMM Incorporated

Inventor： RICO ALVARINO, Alberto ,  ANCHAN, Kirankumar Bhoja ,  VUMMINTALA, Shashidhar ,  BALASUBRAMANIAN, Srinivasan ,  XU, Hao ,  SUBRAHMANYA, Parvathanathan ,  FAKOORIAN, Seyed Ali Akbar ,  GAAL, Peter ,  SOMICHETTY, Gowrisankar

IPC: H04L5/00

Abstract: Aspects of the present disclosure relate to methods and apparatus for optimizing real time services (e.g., such as a voice over Long Term Evolution (LTE) (VoLTE)) for devices with limited communications resources, such as machine type communication (MTC) devices and enhanced MTC (eMTC) devices. In one aspect, a UE determines a first configuration of subframes within at least one radio frame available for the UE and other UEs to use for bundled communications with a BS. The UE receives an indication of one or more subframes within the at least one radio frame that are unavailable for bundled uplink transmissions, and determines a second configuration of subframes to use for bundled communications based on the indication. The UE overrides the first configuration of subframes with the second configuration of subframes, and communicates with the BS using the second configuration of subframes. Numerous other aspects are provided.

公开(公告)号：EP3030009B1

公开(公告)日：2017-08-23

申请号：EP16152206.5

申请日：2009-07-01

Applicant: Qualcomm Incorporated

Inventor： SUBRAHMANYA, Parvathanathan

IPC: H04W52/02 ,  H04W52/24 ,  H04W52/32 ,  H04W52/28

CPC classification number: H04W88/08 ,  H04W52/0206 ,  H04W52/244 ,  H04W52/287 ,  H04W52/322 ,  H04W52/325 ,  H04W84/045 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/23

Abstract: The invention relates to a method for facilitating deployment of a low power mode in an access point, AP, base station (600), comprising: determining (606) whether each of at least one access terminal, AT, in at least one defined coverage area is in an idle state; in response to each of the at least one AT being in the idle state, entering (608) the low power mode; and when in the low power mode, varying (610) a transmission power at which the AP base station transmits at least one common channel as a function of time, while maintaining the transmission power at a nominal level with adequate frequency to allow one or more new ATs to detect the AP base station and/or connect to the AP base station and ensuring alignment between the awake period of one or more associated ATs and periods when the transmission power of the AP base station is at the nominal level.

Abstract translation: 本发明涉及一种便于在接入点AP基站（600）中部署低功率模式的方法，包括：确定（606）至少一个接入终端AT中的每个接入终端是否在至少一个定义的覆盖范围 区域处于空闲状态; 响应于所述至少一个AT中的每一个处于所述空闲状态，进入（608）所述低功率模式; 并且当处于低功率模式时，根据时间改变（610）AP基站发射至少一个公共信道的发射功率，同时以足够的频率将发射功率保持在标称水平以允许一个或多个 新的AT检测AP基站和/或连接到AP基站，并确保一个或多个相关AT的唤醒时段与AP基站的传输功率处于标称电平的时段之间的对准。

公开(公告)号：EP2695237B1

公开(公告)日：2017-07-26

申请号：EP12716882.1

申请日：2012-04-06

Applicant: Qualcomm Incorporated

Inventor： SUBRAHMANYA, Parvathanathan ,  KASTURI, Nitin

IPC: H04W52/24 ,  H04W52/28 ,  H04W52/36 ,  H01Q1/24 ,  H04B1/38 ,  H04B1/3827

CPC classification number: H01Q1/245 ,  H04B1/3838 ,  H04W52/247 ,  H04W52/283 ,  H04W52/288 ,  H04W52/367

公开(公告)号：EP2710834A1

公开(公告)日：2014-03-26

申请号：EP12724032.3

申请日：2012-05-16

Applicant: Qualcomm Incorporated

Inventor： KRISHNASWAMY, Dilip ,  SUBRAHMANYA, Parvathanathan

IPC: H04W36/00 ,  H04M1/60

Abstract: Aspects describe infrastructure unassisted inter-device handoff. A method performed by a wireless communications apparatus for inter-device handoff is disclosed. A wireless communications apparatus that performs a network unassisted inter-device handoff is disclosed. A computer program product comprising a computer-readable medium that includes codes for carrying out inter-device handoff is disclosed. At least one processor configured to perform a network unassisted communication handoff is disclosed.

Abstract translation: 方面描述了基础设施无协调的设备间切换。 公开了一种由用于设备间切换的无线通信装置执行的方法。 公开了一种执行网络非辅助设备间切换的无线通信装置。 公开了一种计算机程序产品，其包括包括用于执行设备间切换的代码的计算机可读介质。 公开了至少一个被配置为执行网络非辅助通信切换的处理器。

公开(公告)号：EP1419590B1

公开(公告)日：2013-09-18

申请号：EP02759410.0

申请日：2002-08-20

Applicant: QUALCOMM INCORPORATED

Inventor： SHIU, Da-shan ,  WILLENEGGER, Serge ,  CHI, Richard ,  SUBRAHMANYA, Parvathanathan ,  HSU, Chih-Ping

IPC: H04W52/12 ,  H04W52/26 ,  H04W52/44

CPC classification number: H04W52/12 ,  H04W52/20 ,  H04W52/267 ,  H04W52/283 ,  H04W52/286 ,  H04W52/44

Abstract: Techniques to more efficiently control the transmit power for a data transmission that uses a number of formats (e.g., rates, transport formats). Different formats for a given data channel (e.g., transport channel) may require different target SNIRs to achieved a particular BLER. In one aspect, individual target BLER may be specified for each format of each data channel. In another aspect, various power control schemes are provided to achieve different target SNIRs for different formats. In a first power control scheme, multiple individual outer loops are maintained for multiple formats. For each format, its associated outer loop attempts to set the target SNIR such that the target BLER specified for that format is achieved. In a second power control scheme, multiple individual outer loops are maintained and the base station further applies different adjustments to the transmit power levels for different formats.

Abstract translation: 用于更有效地控制使用多种格式（例如，速率，传输格式）的数据传输的发射功率的技术。 给定数据信道（例如，传输信道）的不同格式可能需要不同的目标SNIR来实现特定的BLER。 在一个方面，可以为每个数据信道的每个格式指定单个目标BLER。 在另一方面，提供各种功率控制方案以实现用于不同格式的不同目标SNIR。 在第一功率控制方案中，为多种格式维护多个单独的外环。 对于每个格式，其关联的外部循环尝试设置目标SNIR，以便实现为该格式指定的目标BLER。 在第二功率控制方案中，保持多个单独的外环，并且基站进一步对不同格式的发射功率电平进行不同的调整。

公开(公告)号：EP1714520B1

公开(公告)日：2011-12-28

申请号：EP05705466.0

申请日：2005-01-11

Applicant: Qualcomm, Incorporated

Inventor： SUBRAHMANYA, Parvathanathan

IPC: H04W68/00

CPC classification number: H04W68/00 ,  H04W52/0216 ,  Y02D70/00

Abstract: A wireless communications network (120) responds to each incoming call placed to a wireless communications device (134) by transmitting a call-paging message (418) within a corresponding partition of a digital radio frame of prescribed format. Responsive to each occurrence of a broadcast event (404), the network transmits (414) a repeating broadcast-paging message announcing the availability of broadcast-paging message announcing the availability of broadcast content from the network. The broadcast-paging message is transmitted multiple times within each digital radio frame. Another sequence (500) describes WCD operation in this network. Responsive to wakeup (502) from sleep, the WCD detects (509) received signal quality. The WCD also receives (510) scheduled network transmission of a call-paging message and a number of instances (at least one) of a repeating network transmission of a call-paging message and a number of instances (at least one) of a repeating network transmitted broadcast-paging message that occurs multiple times for each scheduled transmission of the call-paging message. This number varies inversely with the detected signal quality.

公开(公告)号：EP1419591B1

公开(公告)日：2011-11-02

申请号：EP02763523.4

申请日：2002-08-22

Applicant: QUALCOMM INCORPORATED

Inventor： SUBRAHMANYA, Parvathanathan

IPC: H04W52/40

CPC classification number: H04W52/40

Abstract: Techniques to combine soft-decision power control symbols received for multiple active base stations. In one method, a received signal is initially processed to derive soft-decision (multi-bit valued) symbols for power control commands transmitted from a number of base stations. Each soft-decision symbol for each base station is then scaled based on a scaling factor associated with the base station and which is related to the received signal quality for the power control symbols for the base station. The scaling allows power control symbols for more reliably received base stations to be given greater weights. The scaled soft-decision symbols for each power control period are then combined to provide a decision metric for the period. Each decision metric is then compared against a particular threshold, and a power control decision is derived for each decision metric based on the result of the comparison.

公开(公告)号：EP2311196A1

公开(公告)日：2011-04-20

申请号：EP09770969.5

申请日：2009-06-24

Applicant: QUALCOMM Incorporated

Inventor： SHEN, Qiang ,  YEE, Nathan, D. ,  SUBRAHMANYA, Parvathanathan

IPC: H04B1/707

CPC classification number: H04B1/7107 ,  H04B1/70735 ,  H04B1/71072 ,  H04B2201/70701

Abstract: A mobile station that is configured to perform common channel cancellation may include a parameter estimation unit that is configured to estimate parameters for generating a common channel error. The mobile station may also include a common channel generation unit that is configured to generate the common channel error based on the parameters. The mobile station may also include an adder that is configured to subtract the common channel error from received data samples.

Abstract translation: 被配置为执行公共信道消除的移动站可以包括被配置为估计用于生成公共信道错误的参数的参数估计单元。 移动台还可以包括公共信道生成单元，其被配置为基于参数生成公共信道错误。 移动站还可以包括被配置为从接收的数据样本中减去公共信道误差的加法器。