公开(公告)号：US20140126455A1

公开(公告)日：2014-05-08

申请号：US13855554

申请日：2013-04-02

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Thomas J. Richardson ,  Rajiv Laroia

IPC: H04W4/06 ,  H04W72/00

CPC classification number: H04W4/06 ,  H04L5/0007 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/0064 ,  H04L27/261 ,  H04W72/005

Abstract: Systems and methodologies are described that facilitate transmitting at least two different types of information in a single signal, whereby the different types of information can be encoded and decoded independently. Thus, changes to one type of information does not affect a second type of information.

Abstract translation: 描述了促进在单个信号中发送至少两种不同类型的信息的系统和方法，由此可以独立地对不同类型的信息进行编码和解码。 因此，对一种类型的信息的改变不影响第二类型的信息。

公开(公告)号：US09992750B2

公开(公告)日：2018-06-05

申请号：US13956724

申请日：2013-08-01

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Rajiv Laroia ,  Xinzhou Wu

IPC: H04W52/24 ,  H04W52/38

CPC classification number: H04W52/243 ,  H04W52/383

Abstract: Methods and apparatus related to the sharing of wide area network (WAN) downlink bandwidth with peer to peer communication signaling usage are described. A WAN, e.g., cellular, wireless communications device using a base station attachment point, transmits a signal to be used by a peer to peer wireless communications device for controlling its peer to peer transmit power level. The peer to peer wireless communications device receives and measures the strength of the power control signal from the WAN wireless communications device. The measurement information is used by the peer to peer wireless communications device in determining whether or not peer to peer signal transmission is permitted and/or in determining a peer to peer transmission power level. Thus the WAN device is able to manage interference from the peer to peer devices in its vicinity which impacts its recovery of WAN base station downlink signals.

公开(公告)号：US09848372B2

公开(公告)日：2017-12-19

申请号：US13953512

申请日：2013-07-29

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Rajiv Laroia ,  Saurabha R. Tavildar ,  Thomas J. Richardson ,  Xinzhou Wu ,  Leonard Henry Grokop

IPC: H04W48/16 ,  H04W8/00

CPC classification number: H04W48/16 ,  H04W8/005

Abstract: Systems and methodologies are described that facilitate identifying peers based upon encoded signals during peer discovery in a peer to peer network. For example, direct signaling that partitions a time-frequency resource into a number of segments can be utilized to communicate an identifier within a peer discovery interval; thus, a particular segment selected for transmission can signal a portion of the identifier, while a remainder can be signaled based upon tones communicated within the selected segment. Moreover, a subset of symbols within the resource can be reserved (e.g., unused) to enable identifying and/or correcting timing offset. Further, signaling can be effectuated over a plurality of peer discovery intervals such that partial identifiers communicated during each of the peer discovery intervals can be linked (e.g., based upon overlapping bits and/or bloom filter information).

公开(公告)号：US09736721B2

公开(公告)日：2017-08-15

申请号：US14260189

申请日：2014-04-23

Applicant: QUALCOMM Incorporated

Inventor： Rajiv Laroia ,  Arnab Das ,  Murari Srinivasan ,  Pablo Alejandro Anigstein ,  Vladimir Parizhsky ,  Mathew Scott Corson

IPC: H04W28/02 ,  H04W76/02 ,  H04W4/06 ,  H04W36/00 ,  H04W40/24 ,  H04W76/04 ,  H04W76/06 ,  H04W36/18

CPC classification number: H04W28/0263 ,  H04W4/06 ,  H04W36/0005 ,  H04W36/0027 ,  H04W36/18 ,  H04W40/24 ,  H04W76/15 ,  H04W76/20 ,  H04W76/34

Abstract: Systems and methodologies are described that facilitate supporting multiple connections associated with a wireless terminal. Notifications may be provided to a primary base station upon establishment and/or removal of connections between the wireless terminal and secondary base station(s). Additionally, the multiple connections may be evaluated and a preferred connection from the set of multiple connections may be utilized to transfer data to the wireless terminal over a downlink connection.

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

IPC: H04L5/00 ,  H04L27/26

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.

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.

公开(公告)号：US09198148B2

公开(公告)日：2015-11-24

申请号：US14107670

申请日：2013-12-16

Applicant: QUALCOMM Incorporated

Inventor： Junyi Li ,  Rajiv Laroia ,  Saurabha R. Tavildar ,  Thomas J. Richardson ,  Xinzhou Wu ,  Leonard Henry Grokop

IPC: H04B7/212 ,  H04J3/06 ,  H04W56/00 ,  H04L5/00 ,  H04W8/00 ,  H04W84/18

CPC classification number: H04L67/1061 ,  H04J3/0638 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0037 ,  H04L12/18 ,  H04L67/1093 ,  H04W8/005 ,  H04W56/001 ,  H04W56/0015 ,  H04W84/18

Abstract: Systems and methodologies are described that facilitate identifying peers based upon encoded signals during peer discovery in a peer to peer network. For example, direct signaling that partitions a time-frequency resource into a number of segments can be utilized to communicate an identifier within a peer discovery interval; thus, a particular segment selected for transmission can signal a portion of the identifier, while a remainder can be signaled based upon tones communicated within the selected segment. Moreover, a subset of symbols within the resource can be reserved (e.g., unused) to enable identifying and/or correcting timing offset. Further, signaling can be effectuated over a plurality of peer discovery intervals such that partial identifiers communicated during each of the peer discovery intervals can be linked (e.g., based upon overlapping bits and/or bloom filter information).

Abstract translation: 描述了系统和方法，其便于在对等网络中的对等体发现期间基于编码信号来识别对等体。 例如，可以利用将时间 - 频率资源分割成多个段的直接信令来在对等设备发现间隔内传送标识符; 因此，选择用于传输的特定片段可以发送标识符的一部分，而可以基于在所选择的段内通信的音调来发信号通知剩余部分。 此外，可以保留资源内的符号子集（例如，未使用的）以使得能够识别和/或校正定时偏移。 此外，可以在多个对等点发现间隔上实现信令，使得可以链接每个对等设备发现间隔期间通信的部分标识符（例如，基于重叠位和/或布隆过滤器信息）。

公开(公告)号：US20150071135A1

公开(公告)日：2015-03-12

申请号：US14542354

申请日：2014-11-14

Applicant: QUALCOMM Incorporated

Inventor： Samir Kapoor ,  Junyi Li ,  Rajiv Laroia

IPC: H04W36/06 ,  H04L5/14

CPC classification number: H04W36/06 ,  H04L5/14 ,  H04W72/02

Abstract: Transmission techniques using configurable channels for the downlink and/or uplink are described. In one aspect, the downlink channel and/or uplink channel may be independently selected for a terminal The terminal may establish a connection with a base station on default downlink and uplink channels. Another downlink channel and/or another uplink channel may be selected based on various factors such as channel quality, loading, and interference. The terminal would then switch to the new downlink and/or uplink channel for communication. In another aspect, the base stations broadcast sector information used by the terminals for communication and/or channel selection. The sector information may include various types of information such as the available downlink and uplink channels, the frequencies of the available channels, the loading on the available channels, and QoS information. The terminals may select a sector, a downlink channel, and/or an uplink channel based on the sector information.

Abstract translation: 描述了使用用于下行链路和/或上行链路的可配置信道的传输技术。 在一个方面，可以为终端独立地选择下行链路信道和/或上行链路信道。终端可以在默认下行链路和上行链路信道上建立与基站的连接。 可以基于诸如信道质量，加载和干扰的各种因素来选择另一个下行链路信道和/或另一个上行链路信道。 终端然后将切换到用于通信的新的下行链路和/或上行链路信道。 在另一方面，基站广播由终端用于通信和/或信道选择的扇区信息。 扇区信息可以包括各种类型的信息，例如可用的下行链路和上行链路信道，可用信道的频率，可用信道上的负载和QoS信息。 终端可以基于扇区信息来选择扇区，下行链路信道和/或上行链路信道。

公开(公告)号：US20140302872A1

公开(公告)日：2014-10-09

申请号：US14311386

申请日：2014-06-23

Applicant: QUALCOMM Incorporated

Inventor： Frank Lane ,  Rajiv Laroia ,  Junyi Li

IPC: H04W4/02

CPC classification number: H04W4/029 ,  H04B7/01 ,  H04W56/0025 ,  H04W56/0035 ,  H04W56/006 ,  H04W64/00 ,  H04W88/005 ,  H04W92/10

Abstract: A wireless terminal receives base station position over an airlink, determines its relative position with respect to the base station and determines a timing adjustment correction. The determined timing correction is applied to control uplink signaling timing and achieve synchronization at the base station's receiver. The wireless terminal determines its relative velocity with respect to the base station and determines a Doppler shift adjustment which it adds to the uplink carrier frequency or to its baseband A wireless terminal determines position of a moving base station and determines timing and/or frequency corrections. Base station position is determined from the current time and stored information correlating the base station position with time, for a geo-synchronous satellite. Base station position information is determined from broadcast information, e.g., GPS base station position, for an aircraft base station. Wireless terminals maybe mobile and include a GPS receiver for WIRELESS TERMINAL position determination.

Abstract translation: 无线终端通过空中链路接收基站位置，确定其相对于基站的相对位置，并确定定时调整校正。 所确定的定时校正被应用于控制上行链路信令定时并且在基站的接收机处实现同步。 无线终端确定其相对于基站的相对速度，并确定其添加到上行链路载波频率或其基带的多普勒频移调整。无线终端确定移动基站的位置并确定定时和/或频率校正。 对于地球同步卫星，从当前时间确定基站位置并存储与基站位置与时间相关的信息。 从飞机基站的广播信息（例如，GPS基站位置）确定基站位置信息。 无线终端可能是移动的，并且包括用于WIRELESS TERMINAL位置确定的GPS接收器。

公开(公告)号：US20140247898A1

公开(公告)日：2014-09-04

申请号：US14278405

申请日：2014-05-15

Applicant: QUALCOMM Incorporated

Inventor： Rajiv Laroia ,  Junyi Li

IPC: H04L27/26

CPC classification number: H04L27/2626 ,  H04L5/0012 ,  H04L5/0039 ,  H04L5/0041 ,  H04L5/0048 ,  H04L5/023 ,  H04L27/2602 ,  H04L27/2605 ,  H04L27/2614 ,  H04L27/2643 ,  H04L27/2647

Abstract: OFDM signal communication methods and apparatus are described. In accordance with the invention OFDM signals are generated in the time domain with symbols being mapped to specific points in time. Training symbols may be included in the transmitted OFDM signal to facilitate symbol recovery. An exemplary receiver of the invention receives the OFDM signal from the communications channel, converts it into the frequency domain, and then filters it in the frequency domain to eliminate tones corresponding to other users. The filtered signal free of MAC interference is then converted into the time domain where channel estimation and compensation operations are performed. After channel compensation symbol recovery is performed in the time domain.

Abstract translation: 描述OFDM信号通信方法和装置。 根据本发明，在时域中生成OFDM信号，其中符号被映射到特定的时间点。 训练符号可以被包括在所发送的OFDM信号中以便于符号恢复。 本发明的示例性接收机从通信信道接收OFDM信号，将其转换成频域，然后在频域中对其进行滤波，以消除与其他用户对应的音调。 然后将没有MAC干扰的经过滤波的信号转换为执行信道估计和补偿操作的时域。 在时域中执行通道补偿符号恢复。