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1.发明授权公开(公告)号：US10455485B2
公开(公告)日：2019-10-22
申请号：US15963074
申请日：2018-04-25
Applicant: QUALCOMM Incorporated
Inventor： Navid Abedini , Chun-Hao Hsu , Amit Mathur , Sathyadev Venkata Uppala , Wingip Tam
Abstract: Techniques for efficient and accurate frequency scans in Narrow Band-Internet of Things (NB-IoT) systems are provided. In an example, a user equipment (UE) searches for a cell on at least one of a plurality of frequency rasters based on a multi-stage search technique, wherein each stage of the multi-stage search searches the at least one frequency raster based on a different set of search parameters. The UE detects a cell on at least one of the frequency rasters based on the searching.
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Patent Agency Ranking
2.发明申请公开(公告)号：US20160255633A1
公开(公告)日：2016-09-01
申请号：US15149055
申请日：2016-05-06
Applicant: QUALCOMM Incorporated
Inventor： Vladimir Parizhsky , Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala , Arnab Das
CPC classification number: H04W72/0453 , H04L1/0026 , H04L27/2602 , H04L47/10 , H04W24/02 , H04W24/10 , H04W28/12 , H04W28/18 , H04W28/24 , H04W72/005 , H04W72/0413 , H04W72/042 , H04W72/1221 , H04W72/1236 , H04W72/1242 , H04W72/1252 , H04W72/1284 , H04W74/0875
Abstract: Wireless terminals and base stations support multiple modes of dedicated control channel operation wherein wireless terminals are allocated different amounts of dedicated uplink resources for reporting control information. A set of dedicated control channel segments is utilized by a wireless terminal to communicate uplink control information reports to its serving base station attachment point. Full tone and split-tone modes of dedicated control channel operation are supported. In full tone mode, a single wireless terminal is allocated each of the dedicated control channel segments associated with a single logical tone. In split tone mode, dedicated control channel segments associated with a single logical tone are allocated between different wireless terminals, with each of the multiple wireless terminals receiving a different non-overlapping subset of the dedicated control channel segments. Logical dedicated control channel tones can be dynamically reallocated for full-tone mode use or split tone mode use.
Abstract translation: 无线终端和基站支持专用控制信道操作的多种模式，其中无线终端被分配不同量的专用上行链路资源用于报告控制信息。 无线终端利用一组专用控制信道段，将上行链路控制信息报告传送到其服务基站附着点。 支持专用控制通道操作的全音和分频模式。 在全音模式下，分配与单个逻辑音调相关联的每个专用控制信道段的单个无线终端。 在分离音模式中，与单个逻辑音调相关联的专用控制信道段在不同的无线终端之间分配，多个无线终端中的每一个接收专用控制信道段的不重叠子集。 可以动态地重新分配逻辑专用控制信道音调以进行全音色模式使用或分离音模式的使用。
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公开(公告)号：US20160344520A1
公开(公告)日：2016-11-24
申请号：US15226181
申请日：2016-08-02
Applicant: QUALCOMM Incorporated
Inventor： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
CPC classification number: H04L5/0007 , H04L5/023 , H04L27/2602 , H04L27/2614 , H04L27/2636
Abstract: A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time instants in the symbol duration. A plurality of tones are allocated to a particular communication device, and a discrete signal is constructed in the time domain by mapping symbols from the constellation to the time instants. A continuous signal is generated by applying an interpolation function to the discrete signal such that the continuous signal only includes sinusoids having frequencies which are equal to the allocated tones.
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公开(公告)号：US09277470B2
公开(公告)日：2016-03-01
申请号：US13764230
申请日：2013-02-11
Applicant: QUALCOMM Incorporated
Inventor： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
IPC: H04W36/20 , H04W16/12 , H04W16/14 , H04W52/02 , H04W52/60 , H04W72/04 , H04W24/00 , H04W36/06 , H04W52/08 , H04W52/28 , H04W56/00 , H04W68/02 , H04W72/00
CPC classification number: H04W36/20 , H04W16/12 , H04W16/14 , H04W24/00 , H04W36/06 , H04W52/0235 , H04W52/08 , H04W52/281 , H04W52/283 , H04W52/286 , H04W52/287 , H04W52/288 , H04W52/60 , H04W56/00 , H04W68/02 , H04W68/025 , H04W72/00 , H04W72/048 , Y02D70/00
Abstract: In many cellular systems, reusing spectrum bandwidth, creates problems in boundary regions between the cells and sectors where the signal strength received from adjacent base stations or adjacent sector transmissions of a single base station may be nearly equivalent. The invention creates a new type of diversity, referred to as multiple carrier diversity by utilizing multiple carriers, assigning different power levels to each carrier frequency at each base station, and/or offsetting sector antennas. The cell and/or sector coverage areas can be set so as to minimize or eliminate overlap between cell and/or sector boundary regions of different carrier frequencies. Mobile nodes traveling throughout the system can exploit multiple carrier diversity by detecting carriers and selecting to use a non-boundary carrier based on other system criteria in order to improve performance. Boundary carriers may, but need not be, identified and excluded from consideration for use by a wireless terminal.
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公开(公告)号：US11032035B2
公开(公告)日：2021-06-08
申请号：US16417427
申请日：2019-05-20
Applicant: QUALCOMM Incorporated
Inventor： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
Abstract: A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time instants in the symbol duration. A plurality of tones are allocated to a particular communication device, and a discrete signal is constructed in the time domain by mapping symbols from the constellation to the time instants. A continuous signal is generated by applying an interpolation function to the discrete signal such that the continuous signal only includes sinusoids having frequencies which are equal to the allocated tones.
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公开(公告)号：US10313069B2
公开(公告)日：2019-06-04
申请号：US15226181
申请日：2016-08-02
Applicant: QUALCOMM Incorporated
Inventor： Rajiv Laroia , Junyi Li , Sathyadev Venkata Uppala
Abstract: A method for reducing the peak-to-average ratio in an OFDM communication signal is provided. The method includes defining a constellation having a plurality of symbols, defining a symbol duration for the OFDM communication signal, and defining a plurality of time instants in the symbol duration. A plurality of tones are allocated to a particular communication device, and a discrete signal is constructed in the time domain by mapping symbols from the constellation to the time instants. A continuous signal is generated by applying an interpolation function to the discrete signal such that the continuous signal only includes sinusoids having frequencies which are equal to the allocated tones.
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