Adaptive HARQ in an OFDMA based communication system
    11.
    发明授权
    Adaptive HARQ in an OFDMA based communication system 有权
    在基于OFDMA的通信系统中的自适应HARQ

    公开(公告)号:US07957345B2

    公开(公告)日:2011-06-07

    申请号:US11685497

    申请日:2007-03-13

    IPC分类号: H04W4/00

    摘要: The present invention discloses constructs and methods for transmitting a HARQ re-transmission in an adaptive manner in a wireless communication system. The system of the present invention discloses: scheduling the re-transmission of a data packet, based on decoding results from a receiver; determining a plurality of parameters for re-transmission in an adaptive manner; sending an assignment message if required; using a plurality of fields in the assignment message for re-transmission to indicate the plurality of parameters in the re-transmission; using a MACID field in the assignment message for re-transmission to indicate a target mobile station for the re-transmission; transmitting a data packet for the re-transmission; and decoding the data packet at the receiver to determine if a further need of re-transmission exists.

    摘要翻译: 本发明公开了一种在无线通信系统中以自适应方式发送HARQ再传输的结构和方法。 本发明的系统基于来自接收机的解码结果来调度数据包的重发送; 以自适应方式确定用于重传的多个参数; 如果需要,发送转发消息; 在分配消息中使用多个字段进行重新发送以指示重传中的多个参数; 在所述分配消息中使用MACID字段进行重新发送以指示用于所述重新发送的目标移动台; 发送用于重传的数据分组; 并且在接收机处对数据分组进行解码,以确定是否存在再次传输的进一步需要。

    Transmit power initialization for secondary reverse link carriers in a wireless communication network
    12.
    发明授权
    Transmit power initialization for secondary reverse link carriers in a wireless communication network 有权
    在无线通信网络中对次级反向链路载波进行发射功率初始化

    公开(公告)号:US07738903B2

    公开(公告)日:2010-06-15

    申请号:US11372575

    申请日:2006-03-10

    IPC分类号: H04B7/00

    CPC分类号: H04W52/16 H04W52/50

    摘要: A method and apparatus provide for setting the initial transmit power of secondary reverse link carriers used by mobile stations in conjunction with primary reverse link carriers. In one or more embodiments, a mobile station sets the initial transmit power of a secondary reverse link carrier relative to the transmit power of the primary reverse link carrier as a function of initialization transmit power information transmitted to the mobile station, which directly or indirectly considers reverse link loading information. Additional considerations may include differences in active sets associated with the primary and secondary reverse link carriers and/or sector switching activity of the mobile station.

    摘要翻译: 一种方法和装置提供用于设置移动台与主反向链路载波一起使用的次级反向链路载波的初始发射功率。 在一个或多个实施例中,移动站相对于主反向链路载波的发射功率设置次级反向链路载波的初始发射功率,作为发送到移动台的直接或间接考虑的初始化发射功率信息的函数 反向链接加载信息。 附加考虑可以包括与主要和次要反向链路载波相关联的活动集和/或移动台的扇区切换活动的差异。

    Spectral shaping a CDMA signal
    13.
    发明授权
    Spectral shaping a CDMA signal 有权
    频谱整形CDMA信号

    公开(公告)号:US06430169B1

    公开(公告)日:2002-08-06

    申请号:US09265202

    申请日:1999-03-10

    IPC分类号: H04B7216

    CPC分类号: H04B1/62 H04B1/707

    摘要: The invention is a CDMA spectral shaping technology that attenuates the out-of-band signal power in the CDMA signal. The in-band CDMA signal is attenuated near the corner frequencies to reduce components that provide a disproportionate contribution to the out-of-band signal power. The power amplifier in the CDMA base station can then operate at higher power levels without exceeding out-of-band signal power limitations. As a result, the power amplifier operates more efficiently and extends the range or capacity of the base station. In some examples of the invention, spectral shaping digital filters are placed between the cell site modem and the digital-to-analog converter in the base station. In other examples of the invention, spectral shaping analog filters are placed between the digital-to-analog converter and the low-pass filter in the base station.

    摘要翻译: 本发明是对CDMA信号中的带外信号功率进行衰减的CDMA频谱整形技术。 带内CDMA信号在拐角频率附近衰减,以减少对带外信号功率提供不成比例的贡献的组件。 CDMA基站中的功率放大器然后可以在更高功率电平下工作,而不超出带外信号功率限制。 结果,功率放大器更有效地工作并且扩展了基站的范围或容量。 在本发明的一些示例中,频谱整形数字滤波器被放置在基站中的小区现场调制解调器和数模转换器之间。 在本发明的其他示例中,频谱整形模拟滤波器被放置在基站中的数模转换器和低通滤波器之间。

    System and method for reducing interference
    14.
    发明授权
    System and method for reducing interference 有权
    减少干扰的系统和方法

    公开(公告)号:US08743785B2

    公开(公告)日:2014-06-03

    申请号:US13210119

    申请日:2011-08-15

    IPC分类号: H04W52/04 H04W92/00 H04W52/24

    摘要: A system and method for reducing interference are provided. A method for communications controller operations in a multi-carrier system includes generating information for a broadcast channel, preparing the information for transmission, selecting a location for an unoccupied subcarrier from a plurality of available locations, and placing the prepared information into a plurality of contiguous subcarriers, where the plurality of contiguous subcarriers includes the unoccupied subcarrier and a plurality of other subcarriers. The method also includes transmitting the plurality of contiguous subcarriers.

    摘要翻译: 提供了减少干扰的系统和方法。 一种用于多载波系统中的通信控制器操作的方法包括:生成用于广播信道的信息,准备用于传输的信息,从多个可用位置中选择未被占用的子载波的位置,以及将准备好的信息放入多个邻接 子载波,其中多个相邻子载波包括未占用的子载波和多个其他子载波。 该方法还包括发送多个连续子载波。

    Method and apparatus for enabling soft handoff in an OFDMA-based communication system
    15.
    发明授权
    Method and apparatus for enabling soft handoff in an OFDMA-based communication system 有权
    在基于OFDMA的通信系统中实现软切换的方法和装置

    公开(公告)号:US08565773B2

    公开(公告)日:2013-10-22

    申请号:US11685037

    申请日:2007-03-12

    IPC分类号: H04W36/00

    CPC分类号: H04W36/18

    摘要: A method of enabling a soft handoff in a communication system, wherein the communication system includes a plurality of sectors and each of the plurality of sectors includes at least one base station is disclosed. The method includes: providing at least one mobile station; setting identical resources for serving the mobile station from each of the plurality of base stations in each sector; designating at least a plurality of base stations in at least one sector to participate a soft handoff; and performing a soft handoff.

    摘要翻译: 一种在通信系统中实现软切换的方法,其中所述通信系统包括多个扇区,并且所述多个扇区中的每一个包括至少一个基站。 该方法包括:提供至少一个移动站; 设置用于从每个扇区中的所述多个基站中的每一个为所述移动站服务的相同资源; 在至少一个扇区中指定至少多个基站以参与软切换; 并执行软切换。

    System and method for rate matching to enhance system throughput based on packet size
    16.
    发明授权
    System and method for rate matching to enhance system throughput based on packet size 有权
    用于速率匹配的系统和方法,以提高基于分组大小的系统吞吐量

    公开(公告)号:US08316286B2

    公开(公告)日:2012-11-20

    申请号:US12554742

    申请日:2009-09-04

    IPC分类号: H03M13/03

    摘要: A system and method for rate matching to enhance system throughput based on packet size is provided. A method for transmitting information includes encoding a block of N bits, where N is an integer, demultiplexing the encoded block of N bits into at least one subblock of systematic bits and at least one subblock of parity bits, and permuting the at least one subblock of systematic bits and the at least one subblock of parity bits to generate at least one permuted subblock. The method also includes forming at least one output block from the at least one permuted subblock, computing a starting position of a redundancy version for a hybrid automatic repeat request (HARQ) transmission based on a relationship between N and a threshold, and transmitting the redundancy version. The redundancy version begins at the computed starting position and ends when a specified number of bits has been transmitted.

    摘要翻译: 提供了一种用于速率匹配以提高基于分组大小的系统吞吐量的系统和方法。 一种用于发送信息的方法包括对N个比特块进行编码,其中N是整数,将编码的N比特块解复用为系统比特的至少一个子块和至少一个奇偶校验比特的子块,以及置换该至少一个子块 的系统比特和所述至少一个奇偶校验位的子块以生成至少一个置换的子块。 该方法还包括从至少一个置换子块形成至少一个输出块,基于N与阈值之间的关系计算混合自动重传请求(HARQ)传输的冗余版本的起始位置,以及发送冗余 版。 冗余版本从计算的起始位置开始,并且在指定的位数已被发送时结束。

    System and method for unsynchronized cooperative spectrum sensing in cognitive radio nodes
    17.
    发明授权
    System and method for unsynchronized cooperative spectrum sensing in cognitive radio nodes 有权
    认知无线电节点中不同步协作频谱感知的系统和方法

    公开(公告)号:US08244185B2

    公开(公告)日:2012-08-14

    申请号:US12205716

    申请日:2008-09-05

    IPC分类号: H04B17/00

    摘要: System and method for unsynchronized cooperative spectrum sensing in cognitive radio nodes. A method comprises receiving spectrum sensing information from a plurality of communications nodes, computing for each communications node in the plurality of communications nodes, a likelihood ratio based on spectrum sensing information provided by the communications node, combining the likelihood ratios, and computing a decision value based on the combined likelihood ratio. Each communications node determines its respective spectrum sensing information at a time unrelated to times when other communications nodes determine their spectrum sensing information.

    摘要翻译: 认知无线电节点中不同步协作频谱感知的系统和方法。 一种方法包括从多个通信节点接收频谱感测信息,针对多个通信节点中的每个通信节点进行计算,基于由通信节点提供的频谱感知信息的似然比,组合似然比,以及计算决策值 基于组合似然比。 每个通信节点在与其他通信节点确定其频谱感测信息的时间无关的时间确定其相应的频谱感测信息。

    Method and system for resource allocation for OFDM wireless networks
    18.
    发明授权
    Method and system for resource allocation for OFDM wireless networks 有权
    OFDM无线网络资源分配方法与系统

    公开(公告)号:US07974353B2

    公开(公告)日:2011-07-05

    申请号:US11836725

    申请日:2007-08-09

    IPC分类号: H04K1/10 H04L27/28

    摘要: According to an embodiment, the present invention provides a method for providing resource allocation in a wireless communication network. The method includes providing an access provider that is configured to perform orthogonal frequency division multiplexing (OFDM). The access provider is configured to allocate transmission resources. The method also includes providing a first plurality of terminals that are wirelessly connected to the access provider. The method further includes assigning the first plurality of terminals to a first scheduling group that is associated with a first plurality of resources. The first plurality of resources includes at least a first resource. The method additionally includes providing a second plurality of terminals that are wirelessly connected to the access provider. The method further includes assigning the second plurality of terminals to a second scheduling group that is associated with a second plurality of resources.

    摘要翻译: 根据实施例,本发明提供了一种在无线通信网络中提供资源分配的方法。 该方法包括提供被配置为执行正交频分复用(OFDM)的接入提供商。 接入提供者被配置为分配传输资源。 该方法还包括提供无线连接到接入提供商的第一多个终端。 该方法还包括将第一多个终端分配给与第一多个资源相关联的第一调度组。 第一多个资源包括至少第一资源。 该方法还包括提供无线连接到接入提供商的第二多个终端。 该方法还包括将第二多个终端分配给与第二多个资源相关联的第二调度组。

    Method and apparatus to improve communication performance in ARQ networks
    19.
    发明授权
    Method and apparatus to improve communication performance in ARQ networks 有权
    提高ARQ网络通信性能的方法和装置

    公开(公告)号:US07697469B2

    公开(公告)日:2010-04-13

    申请号:US11018773

    申请日:2004-12-21

    IPC分类号: H04J3/16

    摘要: A wireless communication network improves reverse link communication performance by changing one or more Automatic Repeat Request (ARQ) control settings as a function of measured or estimated reverse link loading. Control settings can be changed on a per-sector basis, allowing consideration of different loading conditions in different radio sectors of the network. Further, control settings can be changed for individual mobile stations, or selected groups of mobile stations, allowing different ARQ controls to be used for different mobile stations. By way of non-limiting example, a control circuit in a base station controller can be configured to take advantage of light reverse link loading conditions in a given radio sector by changing the ARQ control parameter(s) used for one or more mobile stations operating in that sector so that fewer ARQ retransmissions are required for those mobile stations to transmit reverse link data to the network.

    摘要翻译: 无线通信网络通过改变作为测量或估计的反向链路负载的函数的一个或多个自动重传请求(ARQ)控制设置来改善反向链路通信性能。 可以在每个扇区的基础上改变控制设置,允许考虑网络不同无线电扇区中的不同负载条件。 此外,可以针对各个移动站或选定的移动站组来改变控制设置,允许不同的ARQ控制被用于不同的移动站。 作为非限制性示例,基站控制器中的控制电路可以被配置为通过改变用于一个或多个移动站操作的ARQ控制参数来利用给定无线电扇区中的轻反向链路负载条件 在该扇区中,因此这些移动站需要较少的ARQ重传来向网络发送反向链路数据。