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21. 发明授权

US07047009B2 Base station based methods and apparatus for supporting break before make handoffs in a multi-carrier system 有权
标题翻译：在多载波系统中进行切换之前，用于支持断点的基站的方法和装置
公开(公告)号：US07047009B2
公开(公告)日：2006-05-16
申请号：US10964945
申请日：2004-10-14
申请人： Rajiv Laroia , Junyi Li , Frank A. Lane
发明人： Rajiv Laroia , Junyi Li , Frank A. Lane
IPC分类号： H04Q7/20 , H04Q7/00
CPC分类号： H04W36/18 , H04W36/06
摘要： A mobile communications device initiates a handoff from its current base station (BS) sector network attachment point to a new BS sector. The mobile sends a handoff request over its current wireless link to the current BS sector, which forwards the request to the new BS sector, e.g., via a network link. The new BS sector processes the request assigning dedicated resources, e.g., an identifier and dedicated uplink segments. Information identifying the allocated resources is conveyed from the new BS sector via the current BS sector to the mobile. The mobile determines the time of the allocated dedicated segments based upon a received beacon signal from the new BS sector with known timing relationships to dedicated segments. The mobile breaks the original wireless link just prior to the time of the first assigned dedicated segment. The mobile communicates information on the assigned dedicated segments to perform registration operations, e.g., timing synchronization and power control, establishing a new wireless link.
摘要翻译：移动通信设备发起从其当前基站（BS）扇区网络连接点到新的BS扇区的切换。移动台通过其当前的无线链路向当前BS扇区发送切换请求，该BS扇区将该请求转发到新的BS扇区，例如经由网络链路。新BS部门处理分配专用资源的请求，例如标识符和专用上行链路段。识别分配的资源的信息从新的BS扇区通过当前BS扇区传送到移动台。移动台基于来自新BS扇区的接收到的信标信号确定所分配的专用段的时间，具有与专用段的已知定时关系。移动台在第一个分配的专用段之前就打破原始的无线链路。移动台在分配的专用段上传送信息以执行注册操作，例如定时同步和功率控制，建立新的无线链路。

22. 发明授权

US09118358B2 Methods and apparatus for selecting between multiple carriers using a single receiver chain tuned to a single carrier 有权
标题翻译：使用调谐到单个载波的单个接收机链在多个载波之间进行选择的方法和装置
公开(公告)号：US09118358B2
公开(公告)日：2015-08-25
申请号：US11258553
申请日：2005-10-25
申请人： Rajiv Laroia , Junyi Li , Frank A. Lane
发明人： Rajiv Laroia , Junyi Li , Frank A. Lane
IPC分类号： H04B1/06 , H04B7/00 , H04B1/00 , H04B1/10 , H04B1/403 , H04B17/327 , H04B17/382
CPC分类号： H04B1/005 , H04B1/1027 , H04B1/406 , H04B17/327 , H04B17/382
摘要： Receivers accommodating carrier frequency selection methods in wireless communications systems employing multiple carrier frequencies are described. Although the receiver is tuned to a single band, an estimate of the channel quality corresponding to the currently used carrier and an alternative carrier is generated without switching between carriers. Transmitters of different cells and/or different sectors primarily use different carrier frequencies but periodically transmit using a neighboring sector's carrier frequency. Mobile node receivers use a single RF chain with a controllable RF filter to receive and process a signal within a first selected carrier band including two components, a first signal component identified with the first currently selected band and a second signal component identified with a second alternative band. Separate quality indicator values are obtained from the first and second signal components, compared, and a determination is made as to whether the receiver's RF filter should be switched to the second band.
摘要翻译：描述了在采用多载波频率的无线通信系统中容纳载波频率选择方法的接收机。虽然接收机被调谐到单个频带，但是在不在载波之间切换的情况下生成对应于当前使用的载波和替代载波的信道质量的估计。不同小区和/或不同扇区的发射机主要使用不同的载波频率，但是使用相邻扇区的载波频率周期性地发射。移动节点接收机使用具有可控RF滤波器的单个RF链，以接收和处理包括两个分量的第一选定载波频带内的信号，由第一当前选择频带识别的第一信号分量和用第二替代标识的第二信号分量带。从第一和第二信号分量获得分离的质量指标值，进行比较，并确定接收机的RF滤波器是否应切换到第二频带。

23. 发明授权

US08571493B2 Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems 有权
公开(公告)号：US08571493B2
公开(公告)日：2013-10-29
申请号：US12606079
申请日：2009-10-26
申请人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
发明人： Rajiv Laroia , Junyi Li , Sundeep Rangan , Murari Srinivasan , Frank A. Lane , Prashanth Hande
IPC分类号： H04B7/06
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. At any given time, a controllable switching module 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.

24. 发明授权

US08325826B2 Methods and apparatus for transmitting signals facilitating antenna control 有权
标题翻译：用于传输促进天线控制的信号的方法和装置
公开(公告)号：US08325826B2
公开(公告)日：2012-12-04
申请号：US11249770
申请日：2005-10-13
申请人： Rajiv Laroia , Junyi Li , Frank A. Lane
发明人： Rajiv Laroia , Junyi Li , Frank A. Lane
IPC分类号： H04K1/00
CPC分类号： H04L5/0044 , H04L1/00 , H04L5/0023 , H04L5/006
摘要： Base stations transmit strip signals using strip signal segments and self supporting modulation scheme techniques facilitating rapid channel estimate. A strip segment occupies one OFDM symbol time interval and uses a set of downlink tones; some, e.g., half, of the tones are left unused facilitating SIR measurement. The strip segments are advantageously timed to correspond to uplink access intervals in which connected wireless terminals do not typically transmit uplink signals. Connected wireless terminals including: multiple antennas used in combination, an antenna duplex module, single RF receiver chain and single RF transmitter chain, switch antenna coefficient combinations based on strip signal segment timing. The wireless terminal determines an independent downlink channel quality measurement, e.g., SNR and/or SIR for each strip signal segment and for on-going non-strip signaling. The wireless terminal compares channel quality measurements and selects an antenna coefficient combination to be used during non-strip signaling intervals obtaining very good antenna gain.
摘要翻译：基站使用带状信号段和自支持调制方案技术来传输带状信号，这有助于快速信道估计。条带占用一个OFDM符号时间间隔并使用一组下行链路音调; 一些，例如一半的音调被置于未使用状态，便于SIR测量。带状段有利地被定时以对应于其中连接的无线终端通常不发送上行链路信号的上行链路接入间隔。连接的无线终端包括：组合使用多个天线，天线双工模块，单个射频接收机链和单个射频发射机链，基于条带信号段定时的开关天线系数组合。无线终端确定独立的下行链路信道质量测量，例如每个条带信号段的SNR和/或SIR，以及用于正在进行的非条带信令。无线终端比较信道质量测量并选择在非剥离信令间隔期间使用的天线系数组合，从而获得非常好的天线增益。

25. 发明授权

US07453912B2 Methods and apparatus for selecting between multiple carriers based on signal energy measurements 有权
标题翻译：基于信号能量测量在多个载波之间进行选择的方法和装置
公开(公告)号：US07453912B2
公开(公告)日：2008-11-18
申请号：US10964946
申请日：2004-10-14
申请人： Rajiv Laroia , Junyi Li , Frank A. Lane
发明人： Rajiv Laroia , Junyi Li , Frank A. Lane
IPC分类号： H04J3/12
CPC分类号： H04L1/20 , H04B1/005 , H04B1/1027 , H04B1/406 , H04B17/327 , H04B17/382 , H04L5/023 , H04L27/261 , H04W24/00 , H04W36/30 , H04W48/08 , H04W72/02 , H04W72/0453
摘要： Carrier frequency selection and handoff initiation methods in wireless communications systems employing multiple carrier frequencies are described. Although the receiver is tuned to a single band, based on the relative energy of one or more beacon signal components corresponding to the currently used carrier and one or more beacon signal components corresponding to an alternative carrier, a carrier selection and a handoff determination is made. Mobile nodes can use a single RF chain with a controllable RF filter to receive and process a signal within a first selected carrier band including components from different transmitters, e.g., a first signal component identified with the first currently selected band and a second signal component identified with a second alternative band. The signal components, e.g., beacon signal components from different transmitters may be obtained from a signal which corresponds to multiple symbol transmission time periods. Separate signal energy measurements are performed on the first and second signal components. The signal component energy is compared, and a determination is made as to whether a handoff should be initiated.
摘要翻译：描述了采用多个载波频率的无线通信系统中的载波频率选择和切换发起方法。虽然接收机被调谐到单个频带，但是基于对应于当前使用的载波的一个或多个信标信号分量的相对能量和对应于替代载波的一个或多个信标信号分量，进行载波选择和切换确定。移动节点可以使用具有可控RF滤波器的单个RF链来接收和处理包括来自不同发射机的组件的第一选定载波频带内的信号，例如，识别有第一当前选择的频带的第一信号分量和识别出的第二信号分量与第二个替代乐队。信号分量，例如来自不同发射机的信标信号分量可以从对应于多符号传输时间段的信号获得。对第一和第二信号分量执行单独的信号能量测量。比较信号分量能量，并确定是否应启动切换。

26. 发明授权

US07444127B2 Methods and apparatus for selecting between multiple carriers using a receiver with multiple receiver chains 有权
标题翻译：使用具有多个接收器链的接收机在多个载波之间进行选择的方法和装置
公开(公告)号：US07444127B2
公开(公告)日：2008-10-28
申请号：US10965117
申请日：2004-10-14
申请人： Rajiv Laroia , Junyi Li , Frank A. Lane
发明人： Rajiv Laroia , Junyi Li , Frank A. Lane
IPC分类号： H04B7/08 , H04B7/12
CPC分类号： H04B1/1027 , H04B1/005 , H04B1/3805 , H04B1/406 , H04B7/0808 , H04B7/0814 , H04B7/0817 , H04B17/327 , H04B17/382
摘要： Receivers accommodating frequency band selection methods in wireless communications systems are described. Different frequency bands are associated with different alternative carrier frequencies and/or base station cell and/or sector transmitter connection alternatives. Mobile node receivers include two receiver chains, each chain processing signals corresponding to a carrier. In some embodiments, each receiver chain includes its own controllable RF module, and individual carrier band selection is performed in each RF module. In some embodiments, the two receiver chains share a common RF module; however, each chain includes its own controllable baseband filter. In various embodiments, the first chain has higher complexity than the second chain. In most embodiments, each chain uses the same technology, e.g., spread spectrum OFDM or CDMA. Each chain obtains a quality indicator value on a different band and a comparison of quality indicator values is used in selecting the channel and carrier band for downlink traffic signaling.
摘要翻译：描述了在无线通信系统中容纳频带选择方法的接收机。不同的频带与不同的替代载波频率和/或基站小区和/或扇区发射机连接替代方案相关联。移动节点接收器包括两个接收器链，每个链处理信号对应于载波。在一些实施例中，每个接收器链包括其自己的可控RF模块，并且在每个RF模块中执行单独的载波频带选择。在一些实施例中，两个接收器链共享共同的RF模块; 然而，每个链包括其自己的可控基带滤波器。在各种实施例中，第一链具有比第二链更高的复杂性。在大多数实施例中，每个链使用相同的技术，例如扩频OFDM或CDMA。每个链在不同频带上获得质量指标值，并且在选择用于下行链路业务信令的信道和载波频带时使用质量指标值的比较。

27. 发明申请

US20080192690A1 ENHANCED BEACON SIGNALING METHOD AND APPARATUS 有权
标题翻译：增强信标信号的方法和装置
公开(公告)号：US20080192690A1
公开(公告)日：2008-08-14
申请号：US12106846
申请日：2008-04-21
申请人： Rajiv Laroia , Frank A. Lane , Junyi Li
发明人： Rajiv Laroia , Frank A. Lane , Junyi Li
IPC分类号： H04J4/00 , H04Q7/00
CPC分类号： H04L5/0044 , H04L5/0048 , H04L5/0053
摘要： Methods and apparatus for using high power narrow signals, e.g., tones, for communicating transmitter information without putting the full transmission power available into the transmitted tone or tones are described. User data is transmitted in parallel with transmitter information in many embodiments with the user data being allocated more than 20% of the transmitter's maximum output power in many cases. Buy using an amount of power on the tones used to communicate transmitter information while simultaneously transmitting user data with more than 20% of the available transmission power, efficient bandwidth utilization is achieved while still ensuring a high probability that that the transmitter information signals will be received and detectable using simple energy detection techniques and without the need for timing synchronization with the transmitter to be achieved for success interpretation of the transmitter information.
摘要翻译：描述了使用高功率窄信号（例如音调）用于传送发射机信息而不将全部传输功率可用的传输音调或音调的方法和装置。在许多实施例中，用户数据与发射机信息并行传输，在许多情况下用户数据被分配超过发射机最大输出功率的20％。在用于传送发射机信息的音调上使用一定功率的电力购买，同时以超过20％的可用发射功率发送用户数据，实现有效的带宽利用率，同时仍然确保发送器信息信号将被接收的高概率，可以使用简单的能量检测技术进行检测，并且不需要与发射机的定时同步来实现发射机信息的成功解释。

28. 发明授权

US06990324B2 Methods and apparatus for selecting between multiple carriers using a single receiver chain tuned to a single carrier 有权
公开(公告)号：US06990324B2
公开(公告)日：2006-01-24
申请号：US10872674
申请日：2004-06-21
申请人： Rajiv Laroia , Junyi Li , Frank A. Lane
发明人： Rajiv Laroia , Junyi Li , Frank A. Lane
IPC分类号： H04B17/00
CPC分类号： H04B1/005 , H04B1/1027 , H04B1/406 , H04B17/327 , H04B17/382
摘要： Receivers accommodating carrier frequency selection methods in wireless communications systems employing multiple carrier frequencies are described. Although the receiver is tuned to a single band, an estimate of the channel quality corresponding to the currently used carrier and an alternative carrier is generated without switching between carriers. Transmitters of different cells and/or different sectors primarily use different carrier frequencies but periodically transmit using a neighboring sector's carrier frequency. Mobile node receivers use a single RF chain with a controllable RF filter to receive and process a signal within a first selected carrier band including two components, a first signal component identified with the first currently selected band and a second signal component identified with a second alternative band. Separate quality indicator values are obtained from the first and second signal components, compared, and a determination is made as to whether the receiver's RF filter should be switched to the second band.

29. 发明授权

US06985498B2 Beacon signaling in a wireless system 有权
标题翻译：信标信号在无线系统中
公开(公告)号：US06985498B2
公开(公告)日：2006-01-10
申请号：US10641399
申请日：2003-08-13
申请人： Rajiv Laroia , Frank A. Lane , Junyi Li
发明人： Rajiv Laroia , Frank A. Lane , Junyi Li
IPC分类号： H04J4/00
CPC分类号： H04W52/34 , H04B7/12 , H04L27/2662 , H04W52/42
摘要： A few high power tones used for synchronization and/or other purposes are transmitted in a FDM system during a period of time, e.g., a symbol transmission time period. During normal data transmission symbol periods signals are transmitted using at least 10 tones, e.g., per symbol time. Less than 5 high power signals are transmitted in a symbol time with at least 80% the maximum total transmitter power transmitted being allocated to the high power signals where the maximum total transmitter power is determined from a period of time which may includes one or more data and/or high power tone transmission periods. When the high power tones are transmitted at most 20% of transmitter power is available for transmitting other tones with the power normally being distributed among multiple tones. Normally some tones which would be transmitted in a symbol time go unused during transmission of the high power signals.
摘要翻译：用于同步和/或其他目的的几个高功率音调在一段时间内（例如，符号传输时间段）在FDM系统中发送。在正常数据传输期间，使用至少10个音调，例如每个符号时间发送信号。少于5个高功率信号以符号时间传输，其中传输的最大总发射机功率的至少80％被分配给从可能包括一个或多个数据的时间段确定最大总发射机功率的高功率信号和/或高功率音传输周期。当发送高功率音调时，最多20％的发射机功率可用于发射其他音调，其功率通常分布在多个音调之间。通常，在高功率信号的传输期间将以符号时间传输的一些音调将不被使用。

30. 发明授权

US09485695B2 Methods and apparatus for performing handoffs in a multi-carrier wireless communications systems 有权
标题翻译：在多载波无线通信系统中进行切换的方法和装置
公开(公告)号：US09485695B2
公开(公告)日：2016-11-01
申请号：US11681522
申请日：2007-03-02
申请人： Rajiv Laroia , Junyi Li , Frank A. Lane
发明人： Rajiv Laroia , Junyi Li , Frank A. Lane
IPC分类号： H04W36/00 , H04W36/06 , H04W36/18
CPC分类号： H04W36/06 , H04W36/18
摘要： A mobile communications device initiates a handoff from its current base station (BS) sector network attachment point to a new BS sector. The mobile sends a handoff request over its current wireless link to the current BS sector, which forwards the request to the new BS sector. The new BS sector processes the request assigning dedicated resources. Information identifying the allocated resources is conveyed from the new BS sector via the current BS sector to the mobile. The mobile determines the time of the allocated dedicated segments based upon a received beacon signal from the new BS sector with known timing relationships to dedicated segments. The mobile breaks the original wireless link just prior to the time of the first assigned dedicated segment. The mobile communicates information on the assigned dedicated segments to perform registration operations establishing a new wireless link.
摘要翻译：移动通信设备发起从其当前基站（BS）扇区网络连接点到新的BS扇区的切换。移动台通过其当前的无线链路向当前的BS扇区发送切换请求，该BS扇区将请求转发到新的BS扇区。新的BS部门处理请求分配专用资源。识别分配的资源的信息从新的BS扇区通过当前BS扇区传送到移动台。移动台基于来自新BS扇区的接收到的信标信号确定所分配的专用段的时间，具有与专用段的已知定时关系。移动台在第一个分配的专用段之前就打破原始的无线链路。移动台在分配的专用段上传送信息以执行建立新的无线链路的注册操作。

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