公开(公告)号：EP1922823A2

公开(公告)日：2008-05-21

申请号：EP06787641.7

申请日：2006-07-19

申请人： Qualcomm Flarion Technologies, Inc.

发明人： LANE, Frank, A. ,  LAROIA, Rajiv ,  LI, Junyi

IPC分类号： H04B7/01 ,  H04B7/208 ,  H04Q7/38 ,  H04Q7/36

CPC分类号： H04W4/02 ,  H04B7/01 ,  H04W56/0025 ,  H04W56/0035 ,  H04W56/006 ,  H04W64/00 ,  H04W88/005 ,  H04W92/10

摘要： 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 wireless terminal applies the determined timing correction 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 signal. A wireless terminal determines the 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, e.g., 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 may be mobile and include a GPS receiver for WIRELESS TERMINAL position determination.

公开(公告)号：EP1908191A2

公开(公告)日：2008-04-09

申请号：EP06787642.5

申请日：2006-07-19

申请人： Qualcomm Flarion Technologies, Inc.

发明人： LAROIA, Rajiv ,  JIN, Hui ,  LI, Junyi ,  LANE, Frank, A. ,  RICHARDSON, Tom

IPC分类号： H04B7/26

CPC分类号： H04L1/0025 ,  H04L1/0004 ,  H04L1/0005 ,  H04L1/0029 ,  H04L1/0039 ,  H04L1/0046 ,  H04L1/0057 ,  H04L1/0075 ,  H04L5/0053 ,  H04L27/0008 ,  H04L27/0012 ,  H04L27/2602 ,  H04L2001/0098

摘要： Downlink traffic channel data rate options and methods of indicating to a wireless terminal a utilized downlink data rate option are described. The downlink traffic channel rate option for a segment is conveyed using an assignment signal and/or a block in the downlink traffic channel segment which is not used for user data. Downlink segment assignment signals in some implementations allocate fewer bits for rate option indication than are required to uniquely identify each option, hi some implementations low rate options, e.g., using QPSK, are uniquely identified via assignment signals. Higher rate options, e.g., using QAMl 6 modulation, are conveyed via the distinct information block in the downlink traffic segment using a first coding/modulation method. Still higher rate options, e.g., using QAMl 6, QAM64, or QAM256, are conveyed via the information block in the segment using a second coding/modulation method which is applied to the rate option information.

公开(公告)号：EP1894325A2

公开(公告)日：2008-03-05

申请号：EP06772843.6

申请日：2006-06-12

申请人： Qualcomm Flarion Technologies, Inc.

发明人： LANE, Frank, A. ,  LAROIA, Rajiv ,  LI, Junyi

IPC分类号： H04B7/26

CPC分类号： H04L27/2614 ,  H04B7/2125 ,  H04J3/0682 ,  H04W56/00

摘要： A wireless terminal using OFDM signaling supporting both terrestrial and satellite base station connectivity operates using conventional access probe signaling in a first mode of operation to establish a timing synchronized wireless link with a terrestrial base station. In a second mode of operation, used to establish a timing synchronized wireless link with a satellite base station, a slightly modified access protocol is employed. The round trip signaling time and timing ambiguity between a wireless terminal and a satellite base station is substantially greater than with a terrestrial base station. The modified access protocol uses coding of access probe signals to uniquely identify a superslot index within a beaconslot. The modified protocol uses multiple access probes with different timing offsets to further resolve timing ambiguity and allows the satellite base station access monitoring interval to remain small in duration. Terrestrial base station location/connection information is used to estimate initial timing.

公开(公告)号：EP1867125A1

公开(公告)日：2007-12-19

申请号：EP06737212.8

申请日：2006-03-07

申请人： Qualcomm Flarion Technologies, Inc.

发明人： LAROIA, Rajiv ,  JIN, Hui ,  RICHARDSON, Tom ,  LI, Junyi

IPC分类号： H04L27/34 ,  H04B14/02 ,  H04L5/04

CPC分类号： H04L1/0028 ,  H04B14/026 ,  H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0033 ,  H04L5/023 ,  H04L5/04 ,  H04L27/0008 ,  H04L27/2604 ,  H04L27/3488 ,  Y02D50/10

摘要： A stream of modulation symbols from a zero symbol rate (ZSR) coding/modulation module and a stream of modulation symbols from another type of coding/modulation module are input into an interweaver module. The interweaver module mixes the two input streams when assigning modulation symbols to be communicated in a segment. If a ZSR modulation symbol is non-zero, the ZSR modulation symbol is allocated a transmission position. If the ZSR modulation symbol is a zero modulation symbol, the modulation symbol from the other coding/modulation module is allocated the transmission position. The non-zero modulation symbols from the ZSR module are higher in power than the non-zero modulation symbols from the other module, thus facilitating detection and recovery.

公开(公告)号：EP1794942A1

公开(公告)日：2007-06-13

申请号：EP05789831.4

申请日：2005-08-16

申请人： Flarion Technologies, INC.

发明人： CORSON, M., Scott ,  LAROIA, Rajiv ,  O'NEILL, Alan ,  PARK, Vincent ,  SRINIVASAN, Murari ,  UPPALA, Sathyadev, Venkata

IPC分类号： H04L12/56

CPC分类号： H04L12/1877 ,  H04L12/1836 ,  H04L12/1854 ,  H04L12/189 ,  H04L45/16 ,  H04W4/06 ,  H04W4/08 ,  H04W28/18 ,  H04W28/22 ,  H04W52/26 ,  H04W52/262 ,  H04W52/267 ,  H04W52/286 ,  H04W52/327 ,  H04W72/005 ,  H04W72/04 ,  H04W84/08

摘要： Group communications methods and apparatus are described. Multicast operation is supported with the transmission characteristics (1003, 1052), e.g., transmission power level, coding rate, and/or modulation method being selected to reliably communicate information to the end nodes (134, 136, 144, 146, 154, 156) in the group but not necessarily to all end nodes within the cell or sector (138, 148, 158). Thus resources can be conserved by matching transmission requirements with information on the requirements of one or more group members. The requirements for reliably reaching the end node with the worst channel conditions can, and in some embodiments is, used to determine the group transmission requirements. Power level and other transmission resource allocations can change in response to changes in group membership and/or conditions corresponding to existing group members.

公开(公告)号：EP1754387A2

公开(公告)日：2007-02-21

申请号：EP05758002.9

申请日：2005-06-09

申请人： Qualcomm Flarion Technologies, Inc.

发明人： LAROIA, Rajiv ,  LI, Junyi ,  RANGAN, Sundeep ,  HANDE, Prashanth

IPC分类号： H04Q7/20

CPC分类号： H04W68/025 ,  Y02D70/00

摘要： Methods and apparatus for efficient two-stage paging wireless communications systems are described. Wireless terminals are assigned to paging groups. A few first paging message information bits are modulated (using non-coherent modulation) into a first paging signal and communicated from a base station to wireless terminals. WTs wake-up, receive the first paging signal and quickly ascertain whether its paging group should expect a second paging signal, if so, the WT is operated to receive the second paging signal; otherwise, the WT goes back to sleep conserving power. The base station modulates (using coherent modulation) a number of second message information bits into a second paging signal and transmits the signal to WTs. From the information in first and second paging signals, a WT can determine that it is the paged WT and process the paging instructions. The intended paged WT can transmit an acknowledgement signal on a dedicated uplink resource.

摘要翻译： 描述了用于有效的两阶段寻呼无线通信系统的方法和装置。 无线终端被分配给寻呼组。 几个第一寻呼消息信息比特被调制（使用非相干调制）到第一寻呼信号中并从基站传送到无线终端。 WT唤醒，接收第一寻呼信号，并快速确定其寻呼组是否应该预期第二寻呼信号，如果是，则操作WT接收第二寻呼信号; 否则，WT回去睡觉节电。 基站将多个第二消息信息比特（使用相干调制）调制成第二寻呼信号，并将该信号发送给WT。 从第一和第二寻呼信号中的信息，WT可以确定它是寻呼WT并处理寻呼指令。 预期的寻呼WT可以在专用上行链路资源上发送确认信号。

公开(公告)号：EP1673952A1

公开(公告)日：2006-06-28

申请号：EP04795313.8

申请日：2004-10-15

申请人： Flarion Technologies, INC.

发明人： LAROIA, Rajiv ,  LI, Junyi ,  RANGAN, Sundeep ,  SRINIVASAN, Murari ,  LANE, Frank, A. ,  HANDE, Prashanth

IPC分类号： H04Q7/20

CPC分类号： H04B7/0604 ,  H01Q3/24 ,  H01Q3/2605 ,  H04B7/061 ,  H04B7/0691 ,  H04B7/0805 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/006 ,  H04W52/42

摘要： Transmit and/or receive diversity is achieved using multiple antennas. In some embodiments, a single transmitter chain within a wireless terminal is coupled over time to a plurality of transmit antennas (312). At any given time, a controllable switching module (310) couples the single transmitter chain to one the plurality of transmit antennas. Over time, the switching module couples the output signals from the single transmitter chain to different transmit antennas. Switching decisions are based upon predetermined information, dwell information, and/or channel condition feedback information. Switching is performed on some dwell and/or channel estimation boundaries. In some OFDM embodiments, each of multiple transmitter chains is coupled respectively to a different transmit antenna. Information to be transmitted is mapped to a plurality of tones. Different subsets of tones are formed for and transmitted through different transmit chain/antenna sets simultaneously. The balance of tones allocated to the subsets for each antenna are changed as a function of predetermined information, dwell information, and/or channel condition feedback information.

公开(公告)号：EP1317812A2

公开(公告)日：2003-06-11

申请号：EP01968769.8

申请日：2001-09-11

申请人： Flarion Technologies, INC.

发明人： LAROIA, Rajiv ,  LI, Junyi ,  UPPALA, Sathyadev, Venkata

IPC分类号： H04L5/02 ,  H04L27/26

CPC分类号： H04L5/0007 ,  H04L5/023 ,  H04L27/2602 ,  H04L27/2614 ,  H04L27/2636

摘要： A method for reducing the peak-to-average ratio into 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：EP1911236A2

公开(公告)日：2008-04-16

申请号：EP06786529.5

申请日：2006-07-08

申请人： Qualcomm Flarion Technologies, Inc.

发明人： JIN, Hui ,  LI, Junyi ,  LAROIA, Rajiv

IPC分类号： H04L27/26 ,  H04L25/06

CPC分类号： H04L5/0058 ,  H04L5/0007 ,  H04L5/0046 ,  H04L27/2626

摘要： Special DC tone treatment in a wireless communications system, e.g., an OFDM system, is discussed. In the downlink, a wireless terminal receiver introduces self-interference at the DC tone from the RP/ baseband conversion. A base station thus does not transmit on the downlink DC tone according to a predetermined pattern while continuing to transmit on other downlink tones.. Wireless terminals measure received signal on the downlink DC tone during the time of suspended DC tone transmission, estimate self-interference and apply a correction to other received downlink DC tones. In the uplink DC tone interference is a composite of the assigned wireless terminal transmitter's baseband/RF conversion self-interference and air link noise. During one symbol interval of an N symbol interval dwell, the uplink DC tone is reserved for a special modulation symbol, which is a predetermined function of the other M-I modulation symbols. At the base station, its receiver receives a set of modulation symbols conveyed by the uplink DC tone for a dwell, calculates the average DC component and corrects the received N-I modulation symbols.

公开(公告)号：EP1908192A2

公开(公告)日：2008-04-09

申请号：EP06787643.3

申请日：2006-07-19

申请人： Qualcomm Flarion Technologies, Inc.

发明人： LAROIA, Rajiv ,  JIN, Hui ,  LI, Junyi ,  LANE, Frank, A. ,  RICHARDSON, Tom

IPC分类号： H04B7/26

CPC分类号： H04L1/0057 ,  H04L1/0004 ,  H04L1/0005 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0029 ,  H04L27/0008 ,  H04L27/2608 ,  Y02D50/10

摘要： Downlink traffic channel data rate options and methods of indicating to a wireless terminal a utilized downlink data rate option are described. The downlink traffic channel rate option for a segment is conveyed using an assignment signal and/or a block in the downlink traffic channel segment which is not used for user data. Downlink segment assignment signals in some implementations allocate fewer bits for rate option indication than are required to uniquely identify each option. In some implementations low rate options, e.g., using QPSK, are uniquely identified via assignment signals. Higher rate options, e.g., using QAM16 modulation, are conveyed via the distinct information block in the downlink traffic segment using a first coding/modulation method. Still higher rate options, e.g., using QAM16, QAM64, or QAM256, are conveyed via the information block in the segment using a second coding/modulation method which is applied to the rate option information.