公开(公告)号：US20140073343A1

公开(公告)日：2014-03-13

申请号：US13838604

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth NAGARAJA ,  Pooyan AMINI ,  Yeliz TOKGOZ ,  Farhad MESHKATI ,  Christophe CHEVALLIER ,  Mehmet YAVUZ

IPC: H04W72/04

CPC classification number: H04W52/325 ,  H04W52/244 ,  H04W72/04

Abstract: A small cell (e.g., femtocell) in a wireless communication may determine a set of wireless signal measurements for a plurality of small cells causing pilot cell pollution within a coverage area. The small cell may determine an adjustment of a transmission parameter of the small cells for reducing the pilot cell pollution, and transmit the adjustment to the small cells. The adjustment may include, for example, minimizing an area of overlap between at least two small cells having signal power difference below a threshold, maximizing a signal to interference and noise ratio at a location associated with at least two small cells, minimizing an area associated with at least two pilot signals within a threshold signal level, distributing traffic load to at least two of the small cells based on the set of measurements, or by minimizing the number of small cells covering a path.

Abstract translation: 无线通信中的小小区（例如，毫微微小区）可以确定在覆盖区域内导致导频小区污染的多个小小区的一组无线信号测量。 小小区可以确定用于减小导频小区污染的小小区的传输参数的调整，并将调整发送到小小区。 调整可以包括例如使具有低于阈值的信号功率差的至少两个小小区之间的重叠区域最小化，使与至少两个小小区相关联的位置处的信号与干扰和噪声比最大化，使与相关联的区域最小化 在阈值信号电平内具有至少两个导频信号，基于该组测量将业务负载分配给至少两个小小区，或通过使覆盖路径的小小区的数量最小化。

公开(公告)号：US20200037264A1

公开(公告)日：2020-01-30

申请号：US16513356

申请日：2019-07-16

Applicant: QUALCOMM Incorporated

Inventor： Steven Charles CICCARELLI ,  Vikas MAHAJAN ,  Tae Min KIM ,  Supratik BHATTACHARJEE ,  Chitaranjan PELUR SUKUMAR ,  Ashok MANTRAVADI ,  Pooyan AMINI ,  Alberto RICO ALVARINO ,  Carl HARDIN

IPC: H04W52/24 ,  H04W52/14 ,  H04W52/52 ,  H04W72/04 ,  H04L5/00 ,  H04L1/20 ,  H04L1/00

Abstract: Some techniques and apparatuses described herein protect components of a user equipment (UE), such as a low noise amplifier (LNA), from internal interference. For example, the LNA may be disconnected from a receive chain during periods of high internal interference, and may be reconnected to the receive chain during periods of low internal interference. Furthermore, some techniques and apparatuses described herein improve performance by adjusting operations of the UE to account for and/or offset increased internal interference due to a receive chain that does not include a surface acoustic wave (SAW) filter to remove unwanted radio frequency signals. For example, one or more operations of a baseband processor may be modified to account for the increased internal interference. Additionally, or alternatively, reporting of channel state information may be modified to account for increased internal interference of the UE. Additional details are described herein.

公开(公告)号：US20180254797A1

公开(公告)日：2018-09-06

申请号：US15884317

申请日：2018-01-30

Applicant: QUALCOMM Incorporated

Inventor： Pooyan AMINI ,  Amir FARAJIDANA ,  Sibasish DAS ,  Wenshu ZHANG ,  Supratik BHATTACHARJEE ,  Tao LUO

IPC: H04B1/7107 ,  H04W72/04 ,  H04W36/00 ,  H04L1/16

CPC classification number: H04B1/7107 ,  H04J11/004 ,  H04J11/005 ,  H04L1/1607 ,  H04L1/1812 ,  H04L5/005 ,  H04L5/0073 ,  H04W36/0066 ,  H04W72/042 ,  H04W72/0446

Abstract: An apparatus may receive a downlink subframe from a serving base station. The downlink subframe may include interference associated with a second subframe transmitted by an intra-frequency neighboring cell (IFNC). The apparatus may detect whether there are interfering cell-specific reference signals (CRS) in one or more symbols of the second subframe. The apparatus may determine, based on whether interfering CRS are detected in the one or more symbols of the second subframe, a subframe type of the second subframe. The apparatus may cancel detected interfering CRS from the received downlink subframe based on the determined subframe type of the second subframe.