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    Methods and systems for assigning channels in a power controlled time slotted wireless communications system
    51.
    发明授权
    Methods and systems for assigning channels in a power controlled time slotted wireless communications system 有权
    用于在功率控制的时隙无线通信系统中分配信道的方法和系统

    公开(公告)号：US07116982B2

    公开(公告)日：2006-10-03

    申请号：US10375122

    申请日：2003-02-28

    申请人： Krishna Balachandran ,  Joseph H. Kang

    发明人： Krishna Balachandran ,  Joseph H. Kang

    IPC分类号： H04Q7/20

    CPC分类号： H04W72/044 ,  H04M2215/32 ,  H04W4/24 ,  H04W24/10 ,  H04W52/287 ,  H04W72/02 ,  H04W72/085

    摘要： Systems and methods for intelligently assigning a channel to a device being used by a mobile user in a power controlled, wireless communications system by minimizing the difference between a mobile user's received signal power and the minimum received signal power of a current user on a candidate carrier frequency. Each carrier frequency within a cell is examined to determine whether it has at least one current user assigned to a channel and also has at least one unoccupied channel. For each carrier frequency that meets both of these requirements, a channel quality metric is obtained for each occupied channel. The carrier frequencies are pruned down to a subset of candidate carrier frequencies using the channel quality metrics. Finally, a channel within the set of candidate carrier frequencies is selected by computing a cost function based on the received signal power of the mobile user and the received signal power of each occupied channel.

    摘要翻译： 通过最小化移动用户的接收信号功率与候选载波上的当前用户的最小接收信号功率之间的差异来智能地将信道分配给由功率控制的无线通信系统中的移动用户正在使用的设备的信道的系统和方法 频率。 检查小区内的每个载波频率以确定其是否具有分配给信道的至少一个当前用户，并且还具有至少一个未占用信道。 对于满足这两个要求的每个载波频率，为每个占用信道获得信道质量度量。 使用信道质量度量将载波频率修剪为候选载波频率的子集。 最后，通过基于移动用户的接收信号功率和每个占用信道的接收信号功率计算成本函数来选择该候选载波频率集合内的信道。

    Method and device for MAC layer feedback in a packet communication system
    52.
    发明授权
    Method and device for MAC layer feedback in a packet communication system 失效
    分组通信系统中MAC层反馈的方法和设备

    公开(公告)号：US06975611B1

    公开(公告)日：2005-12-13

    申请号：US09517907

    申请日：2000-03-03

    申请人： Krishna Balachandran ,  Subrahmanyam Dravida ,  Richard P. Ejzak ,  Sanjiv Nanda ,  Shiv M. Seth ,  Stanley Vitebsky

    发明人： Krishna Balachandran ,  Subrahmanyam Dravida ,  Richard P. Ejzak ,  Sanjiv Nanda ,  Shiv M. Seth ,  Stanley Vitebsky

    IPC分类号： H04B7/212 ,  H04B7/26

    CPC分类号： H04B7/2612

    摘要： A method and communication device for media access control feedback over a packet channel divided in channel time slots is provided. The channel time slots are divided into sub-channel time slots. A packet channel feedback field associated with each sub-channel time slot is defined. Acknowledgments are indicated using the packet channel feedback field. An active mobile identity associated with an active mobile station may be assigned which would then be included in the packet channel feedback field. A plurality of active mobile identities may be assigned and some of the active mobile identities may be reserved for special functions. The assigned active mobile identity is used, among other things, to identify an active mobile station to receive packet data signals. The active mobility identity is invalidated after one transaction of packet data signals or invalidated after a short number of such transactions. One or more of the assigned active mobile identities may be used to indicate a time slot assignment for the active mobile station. A sub-channel feedback field in the packet channel feedback field is used to indicate acknowledgments. A sub-channel assignment field in the packet channel feedback field is used to indicate time slot assignments. The sub-channel assignment field is substantially independent of the sub-channel feedback field.

    摘要翻译： 提供了一种用于通过以信道时隙划分的分组信道的媒体访问控制反馈的方法和通信设备。 信道时隙被划分为子信道时隙。 定义与每个子信道时隙相关联的分组信道反馈字段。 使用分组信道反馈字段指示致谢。 可以分配与活动移动台相关联的活动移动身份，然后将其包括在分组信道反馈字段中。 可以分配多个活动移动身份，并且可以为特定功能保留一些活动移动身份。 除了别的以外，使用所分配的活动移动身份以识别用于接收分组数据信号的活动移动台。 主动移动身份在分组数据信号的一次交易之后无效，或者在短时间的这种交易之后无效。 分配的活动移动身份中的一个或多个可以用于指示活动移动台的时隙分配。 分组信道反馈字段中的子信道反馈字段用于指示确认。 分组信道反馈字段中的子信道分配字段用于指示时隙分配。 子信道分配字段基本上独立于子信道反馈字段。

    ARCHITECTURE TO SUPPORT NETWORK-WIDE MULTIPLE-IN-MULTIPLE-OUT WIRELESS COMMUNICATION OVER AN UPLINK
    57.
    发明申请
    ARCHITECTURE TO SUPPORT NETWORK-WIDE MULTIPLE-IN-MULTIPLE-OUT WIRELESS COMMUNICATION OVER AN UPLINK 审中-公开
    支持上网的网络宽多路多通道无线通信架构

    公开(公告)号：US20100067435A1

    公开(公告)日：2010-03-18

    申请号：US12233150

    申请日：2008-09-18

    申请人： Krishna Balachandran ,  Srinivas R. Kadaba ,  Kemal M. Karakayali ,  Ashok Rudrapatna

    发明人： Krishna Balachandran ,  Srinivas R. Kadaba ,  Kemal M. Karakayali ,  Ashok Rudrapatna

    IPC分类号： H04W28/02 ,  H04L27/00

    CPC分类号： H04W72/1268 ,  H04B7/024 ,  H04B7/0617 ,  H04L5/0035 ,  H04L5/0037 ,  H04W52/40 ,  H04W72/1278

    摘要： The present invention provides a method of coordinating the uplink transmissions from at least one mobile unit to a plurality of base stations. The method is implemented in a control and data plane entity and includes scheduling, at the control plane function, uplink signals for transmission from the mobile unit(s) to the plurality of base stations. The method also includes receiving, at the data plane function from the plurality of base stations, signals including scheduled uplink signals transmitted from the mobile unit(s) to the plurality of base stations. The method further includes estimating, at the data plane function, information bits transmitted in the scheduled uplink signals using the received signals and channel state information indicative of a plurality of wireless communication links between the mobile unit(s) and the plurality of base stations.

    摘要翻译： 本发明提供了一种协调从至少一个移动单元到多个基站的上行链路传输的方法。 该方法在控制和数据平面实体中实现，并且包括在控制平面功能处调度用于从移动单元传输到多个基站的上行链路信号。 该方法还包括在多个基站的数据平面功能下接收包括从移动单元向多个基站发送的调度的上行链路信号的信号。 该方法还包括在数据平面功能下，使用所接收的信号和在指示移动单元与多个基站之间的多个无线通信链路的信道状态信息来估计在调度的上行链路信号中发送的信息比特。

    Method for half-and full-duplex subscriber station operation in frequency division duplex systems
    58.
    发明申请
    Method for half-and full-duplex subscriber station operation in frequency division duplex systems 审中-公开
    用于分频双工系统中半双工和全双工用户站操作的方法

    公开(公告)号：US20100008332A1

    公开(公告)日：2010-01-14

    申请号：US12217867

    申请日：2008-07-09

    申请人： Krishna Balachandran ,  Doru Calin ,  Shyam P. Parekh ,  Ashok N. Rudrapatna

    发明人： Krishna Balachandran ,  Doru Calin ,  Shyam P. Parekh ,  Ashok N. Rudrapatna

    IPC分类号： H04J3/00

    CPC分类号： H04L5/16 ,  H04L1/1671 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0091 ,  H04L5/1469

    摘要： The present invention provides a novel framing structure that can be used to smoothly evolve a Time Division Duplex (TDD) wireless communications technology to a Frequency Division Duplex wireless communications technology. A method for establishing the start time of an uplink frame that is offset in relation to a downlink frame by an allocation start time is provided. In addition, methods of allocating downlink and uplink resources for half-duplex and full frequency division duplex operation with adequate provisions for transmit-receive and receive-transmit time gaps are also provided.

    摘要翻译： 本发明提供了一种新颖的帧结构，其可用于将时分双工（TDD）无线通信技术平滑地演进到频分双工无线通信技术。 提供了一种通过分配开始时间建立相对于下行链路帧偏移的上行链路帧的开始时间的方法。 此外，还提供了用于半双工和全分频双工操作的下行链路和上行链路资源与发送接收和接收 - 发送时间间隔的适当规定的方法。

    Method of establishing and maintaining distributed spectral awareness in a wireless communication system
    59.
    发明申请
    Method of establishing and maintaining distributed spectral awareness in a wireless communication system 审中-公开
    在无线通信系统中建立和维护分布式频谱感知的方法

    公开(公告)号：US20070237092A1

    公开(公告)日：2007-10-11

    申请号：US11229896

    申请日：2005-09-19

    申请人： Krishna Balachandran ,  Joseph Kang

    发明人： Krishna Balachandran ,  Joseph Kang

    IPC分类号： H04L12/28 ,  H04L12/56

    CPC分类号： H04W72/085 ,  H04W72/0406 ,  H04W84/18

    摘要： In an ad hoc network in which nodes communicate directly with each other or through another node, hole exchange messages are transmitted on an ongoing basis from one node to one or more other nodes. The spectrum hole message transmitted by a node provides a current view of the frequency spectrum as seen by the transmitting node, indicating where in the spectrum holes exist that are available for transmission. Hole exchange messages are transmitted by a node in response to either time triggers or event triggers. The former includes transmitting a hole exchange message periodically, pseudo-periodically, or according to a timer expiry. The latter includes events such as the node discovering the presence of a new node, receiving a request from another node for the node's current view of the spectrum, upon bearer selection during call setup between the node and another node, degradation of the link between the node and another node, and upon bearer release between the node and another node.

    摘要翻译： 在其中节点彼此直接通信或通过另一个节点进行通信的自组织网络中，空穴交换消息在持续的基础上从一个节点传送到一个或多个其他节点。 由节点发送的频谱孔消息提供了由发射节点看到的频谱的当前视图，指示频谱孔中存在可用于传输的位置。 响应于时间触发或事件触发，节点发送空穴交换消息。 前者包括周期性，伪周期性地或根据定时器到期发送空穴交换消息。 后者包括诸如节点发现新节点的存在的事件，在节点和另一节点之间的呼叫建立期间的承载选择时，从节点的频谱的当前视图接收来自另一节点的请求， 节点和另一个节点，并且在节点和另一个节点之间承载释放。