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公开(公告)号：US08254360B2
公开(公告)日：2012-08-28
申请号：US11447378
申请日：2006-06-05
IPC分类号： H04J1/00
CPC分类号： H04W74/08 , H04L5/023 , H04L27/2601 , H04L27/2602 , H04W28/06 , H04W28/26 , H04W36/00 , H04W72/04 , H04W72/12 , H04W74/002
摘要： Apparatus and methods for interlacing communications in random access control channels of an Orthogonal Frequency Division Multiple Access (OFDMA) wireless communication system are described. A wireless communication device communicating over distinct OFDMA control channels to multiple serving sectors may operate under link limited conditions. The wireless communication device can interlace the communications between the multiple serving sectors. The wireless communication device can interlace the control channel communications in a number of interlaces equal to the number of distinct control channels over which communications are scheduled. In another embodiment, the wireless communication device divide the multiple scheduled control channel communications into two or more sets and can interlace the sets. In another embodiment, the wireless communication device can reserve a first interlace for control channel communications with the serving sector and can time multiplex the remaining control channel communications on a second interlace.
摘要翻译： 描述了正交频分多址（OFDMA）无线通信系统的随机接入控制信道中的通信交织的装置和方法。 在不同的OFDMA控制信道上向多个服务扇区通信的无线通信设备可以在链路有限的条件下操作。 无线通信设备可以交织多个服务扇区之间的通信。 无线通信设备可以将控制信道通信交织在等于通过其调度通信的不同控制信道的数量的多个交织。 在另一个实施例中，无线通信设备将多个调度的控制信道通信划分成两个或多个集合，并且可以交织这些集合。 在另一个实施例中，无线通信设备可以预留用于与服务扇区的控制信道通信的第一交错，并且可以在第二交错上对剩余的控制信道通信进行时间复用。
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公开(公告)号：US07680475B2
公开(公告)日：2010-03-16
申请号：US11147808
申请日：2005-06-07
IPC分类号： H04W4/00
CPC分类号： H04W72/1231 , H04B2201/70702 , H04B2201/709709 , H04W72/082 , H04W72/1257
摘要： Systems and methodologies are described that facilitate dynamically scheduling frequency sets for reuse by user devices to reduce inter-cell interference by evaluating an overall scheduling metric for each user device in a wireless communication region. The overall scheduling metric can be evaluated by determining a fairness metric for each user device in a wireless communication region, an overall channel peak desirability metric for each user device, and a channel delay desirability metric for each user device. The overall scheduling metric can be the product of the fairness metric and one or more of the overall channel peak desirability metric and the channel delay desirability metric. A user device with a highest overall scheduling metric score for a given round of dynamic scheduling can be awarded a frequency set.
摘要翻译： 描述了系统和方法，其促进动态地调度频率集合以供用户设备重用以通过评估无线通信区域中的每个用户设备的总体调度度量来减小小区间干扰。 可以通过确定无线通信区域中的每个用户设备的公平度量，每个用户设备的整体信道峰值期望度量以及每个用户设备的信道延迟期望度量来评估总体调度度量。 总体调度度量可以是公平度量和总信道峰值期望度量和信道延迟期望度量的一个或多个的乘积。 对于给定的一轮动态调度，具有最高总体调度度量得分的用户设备可以被授予频率集。
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公开(公告)号：US07536626B2
公开(公告)日：2009-05-19
申请号：US11020708
申请日：2004-12-22
IPC分类号： H03M13/00
CPC分类号： H04L1/0045 , H04B17/309 , H04L1/0057 , H04L1/20 , H04W52/125 , H04W52/146 , H04W52/16 , H04W52/20 , H04W52/241 , H04W52/243 , H04W52/247 , H04W52/362 , H04W52/367 , H04W52/54
摘要： Techniques for performing erasure detection and power control for a transmission without error detection coding are described. For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, compares the computed metric against an erasure threshold, and declares the received codeword to be “erased” or “non-erased”. The receiver dynamically adjusts the transmit power based on whether the codewords met the erasure threshold or not.
摘要翻译： 描述了用于对没有错误检测编码的传输进行擦除检测和功率控制的技术。 为了擦除检测，发射机经由无线信道发送码字。 接收机计算每个接收到的码字的度量，将所计算的度量与擦除阈值进行比较，并将接收的码字声明为“擦除”或“未擦除”。 接收机基于码字是否满足擦除阈值来动态调整发射功率。
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24.发明申请POWER CONTROL FOR A WIRELESS COMMUNICATION SYSTEM UTILIZING ORTHOGONAL MULTIPLEXING 有权使用正交多路复用的无线通信系统的功率控制公开(公告)号：US20080214121A1
公开(公告)日：2008-09-04
申请号：US12121405
申请日：2008-05-15
IPC分类号： H04B17/00
CPC分类号： H04W52/247 , H04B17/309 , H04L1/0045 , H04L1/0057 , H04L1/20 , H04W24/00 , H04W52/125 , H04W52/146 , H04W52/16 , H04W52/20 , H04W52/24 , H04W52/241 , H04W52/242 , H04W52/243 , H04W52/283 , H04W52/36 , H04W52/362 , H04W52/367 , H04W52/54 , H04W52/60 , H04W88/08
摘要： Techniques for adjusting transmit power to mitigate both intra-sector interference to a serving base station and inter-sector interference to neighbor base stations are described. The amount of inter-sector interference that a terminal may cause may be roughly estimated based on the total interference observed by each neighbor base station, channel gains for the serving and neighbor base stations, and the current transmit power level. The transmit power may be decreased if high interference is observed by a neighbor base station and increased otherwise. The transmit power may be adjusted by a larger amount and/or more frequently if the terminal is located closer to the neighbor base station observing high interference and/or if the current transmit power level is higher, and vice versa. The intra-sector interference is maintained within an acceptable level by limiting a received SNR for the terminal to be within a range of allowable SNRs.
摘要翻译： 描述了用于调整发射功率以减轻对服务基站的扇区内干扰和对邻近基站的扇区间干扰的技术。 终端可能引起的扇区间干扰的量可以基于每个相邻基站观测到的总干扰，服务和相邻基站的信道增益以及当前发射功率电平来大致估计。 如果邻近基站观测到高干扰，否则发射功率可能会降低。 如果终端位于更靠近观测到高干扰的邻近基站和/或当前发射功率电平较高时，发射功率可以更大量地和/或更频繁地进行调整，反之亦然。 通过将终端的接收的SNR限制在可允许的SNR的范围内，将扇区内的干扰维持在可接受的水平内。
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公开(公告)号：US09215581B2
公开(公告)日：2015-12-15
申请号：US11692097
申请日：2007-03-27
申请人： David Jonathan Julian , Chong U. Lee , Kamran Moallemi , Avneesh Agrawal , Manuel E. Jaime , Robert Keith Douglas , Lu Xiao , Gregory Gordon Rose
发明人： David Jonathan Julian , Chong U. Lee , Kamran Moallemi , Avneesh Agrawal , Manuel E. Jaime , Robert Keith Douglas , Lu Xiao , Gregory Gordon Rose
摘要： Various operations may be performed based on a distance-related function associated with two or more devices. For example, an association procedure for two or more devices may be based on one or more determined distances. Similarly, presence management may be based on one or more determined distances. A distance-related function may take various form including, for example, a distance between devices, two or more distances between devices, a rate of change in a relative distance between devices, relative acceleration between devices, or some combination of two or more of the these distance-related functions.
摘要翻译： 可以基于与两个或更多个设备相关联的距离相关功能来执行各种操作。 例如，两个或多个设备的关联过程可以基于一个或多个确定的距离。 类似地，存在管理可以基于一个或多个确定的距离。 距离相关功能可以采取各种形式，包括例如设备之间的距离，设备之间的两个或更多个距离，设备之间的相对距离的变化率，设备之间的相对加速度，或两个或更多个 这些距离相关的功能。
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公开(公告)号：US08886125B2
公开(公告)日：2014-11-11
申请号：US11692100
申请日：2007-03-27
申请人： Avneesh Agrawal , Chong U. Lee , Kamran Moallemi , David Jonathan Julian , Manuel E. Jaime , Robert Keith Douglas , Gregory Gordon Rose , Lu Xiao
发明人： Avneesh Agrawal , Chong U. Lee , Kamran Moallemi , David Jonathan Julian , Manuel E. Jaime , Robert Keith Douglas , Gregory Gordon Rose , Lu Xiao
CPC分类号： H04W76/14 , A61B5/0015 , A61B5/0404 , G01S13/0209 , G01S13/284 , G01S13/765 , H04B5/0031 , H04L63/0861 , H04L67/24 , H04W4/02 , H04W4/023 , H04W4/027 , H04W4/50 , H04W8/005 , H04W12/06
摘要： Various operations may be performed based on a distance-related function associated with two or more devices. For example, an association procedure for two or more devices may be based on one or more determined distances. Similarly, presence management may be based on one or more determined distances. A distance-related function may take various form including, for example, a distance between devices, two or more distances between devices, a rate of change in a relative distance between devices, relative acceleration between devices, or some combination of two or more of the these distance-related functions.
摘要翻译： 可以基于与两个或更多个设备相关联的距离相关功能来执行各种操作。 例如，两个或多个设备的关联过程可以基于一个或多个确定的距离。 类似地，存在管理可以基于一个或多个确定的距离。 距离相关功能可以采取各种形式，包括例如设备之间的距离，设备之间的两个或更多个距离，设备之间的相对距离的变化率，设备之间的相对加速度，或两个或更多个 这些距离相关的功能。
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公开(公告)号：US08576872B2
公开(公告)日：2013-11-05
申请号：US11548561
申请日：2006-10-11
IPC分类号： H04L12/413
CPC分类号： H04W74/0816 , H04W52/325 , H04W72/0406 , H04W74/0808 , H04W84/18
摘要： Systems and methodologies are described that facilitate mitigating a hidden node condition in a wireless mesh network wherein nodes utilize a request-to-send/clear-to-send (RTS/CTS) protocol in conjunction with an asynchronous hybrid automatic repeat request protocol. For instance, a node may contend for a set of subcarriers by sending an RTS signal over the desired subcarriers, and may receive a CTS signal over the contended subcarriers, wherein the CTS signal indicates which subcarriers the node may transmit data over. If another node has won the contention for a particular subcarrier, requesting node may adjust a power level at which it transmits an RTS or a data packet in order to permit the requesting node to utilize the subcarrier without interfering with the winning node.
摘要翻译： 描述了有助于减轻无线网状网络中的隐藏节点条件的系统和方法，其中节点结合异步混合自动重复请求协议利用请求发送/清除发送（RTS / CTS）协议。 例如，节点可以通过在期望的子载波上发送RTS信号来竞争一组子载波，并且可以在竞争的子载波上接收CTS信号，其中CTS信号指示节点可以传送数据的哪些子载波。 如果另一个节点已经赢得了特定子载波的争用，则请求节点可以调整其发送RTS或数据分组的功率电平，以便允许请求节点利用子载波而不干扰获胜节点。
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公开(公告)号：US08543152B2
公开(公告)日：2013-09-24
申请号：US12121328
申请日：2008-05-15
IPC分类号： H04B7/00
CPC分类号： H04W52/247 , H04B17/309 , H04L1/0045 , H04L1/0057 , H04L1/20 , H04W24/00 , H04W52/125 , H04W52/146 , H04W52/16 , H04W52/20 , H04W52/24 , H04W52/241 , H04W52/242 , H04W52/243 , H04W52/283 , H04W52/36 , H04W52/362 , H04W52/367 , H04W52/54 , H04W52/60 , H04W88/08
摘要： Techniques for adjusting transmit power to mitigate both intra-sector interference to a serving base station and inter-sector interference to neighbor base stations are described. The amount of inter-sector interference that a terminal may cause may be roughly estimated based on the total interference observed by each neighbor base station, channel gains for the serving and neighbor base stations, and the current transmit power level. The transmit power may be decreased if high interference is observed by a neighbor base station and increased otherwise. The transmit power may be adjusted by a larger amount and/or more frequently if the terminal is located closer to the neighbor base station observing high interference and/or if the current transmit power level is higher, and vice versa. The intra-sector interference is maintained within an acceptable level by limiting a received SNR for the terminal to be within a range of allowable SNRs.
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公开(公告)号：US08478202B2
公开(公告)日：2013-07-02
申请号：US12121405
申请日：2008-05-15
IPC分类号： H04B17/00
CPC分类号： H04W52/247 , H04B17/309 , H04L1/0045 , H04L1/0057 , H04L1/20 , H04W24/00 , H04W52/125 , H04W52/146 , H04W52/16 , H04W52/20 , H04W52/24 , H04W52/241 , H04W52/242 , H04W52/243 , H04W52/283 , H04W52/36 , H04W52/362 , H04W52/367 , H04W52/54 , H04W52/60 , H04W88/08
摘要： Techniques for adjusting transmit power to mitigate both intra-sector interference to a serving base station and inter-sector interference to neighbor base stations are described. The amount of inter-sector interference that a terminal may cause may be roughly estimated based on the total interference observed by each neighbor base station, channel gains for the serving and neighbor base stations, and the current transmit power level. The transmit power may be decreased if high interference is observed by a neighbor base station and increased otherwise. The transmit power may be adjusted by a larger amount and/or more frequently if the terminal is located closer to the neighbor base station observing high interference and/or if the current transmit power level is higher, and vice versa. The intra-sector interference is maintained within an acceptable level by limiting a received SNR for the terminal to be within a range of allowable SNRs.
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30.发明授权公开(公告)号：US07197692B2
公开(公告)日：2007-03-27
申请号：US10890717
申请日：2004-07-13
IPC分类号： H03M13/03
CPC分类号： H04L1/0045 , H04L1/0057 , H04L1/20 , H04W52/125 , H04W52/20
摘要： Techniques for performing erasure detection and power control for a transmission without error detection coding are described. For erasure detection, a transmitter transmits codewords via a wireless channel. A receiver computes a metric for each received codeword, compares the computed metric against an erasure threshold, and declares the received codeword to be “erased” or “non-erased”. The receiver dynamically adjusts the erasure threshold based on received known codewords to achieve a target level of performance. For power control, an inner loop adjusts the transmit power to maintain a received signal quality (SNR) at a target SNR. An outer loop adjusts the target SNR based on the status of received codewords (erased or non-erased) to achieve a target erasure rate. A third loop adjusts the erasure threshold based on the status of received known codewords (“good”, “bad”, or erased) to achieve a target conditional error rate.
摘要翻译： 描述了用于对没有错误检测编码的传输进行擦除检测和功率控制的技术。 为了擦除检测，发射机经由无线信道发送码字。 接收机计算每个接收到的码字的度量，将所计算的度量与擦除阈值进行比较，并将接收的码字声明为“擦除”或“未擦除”。 接收机基于接收到的已知码字来动态地调整擦除阈值，以实现目标性能水平。 对于功率控制，内部环路调整发射功率以将接收信号质量（SNR）保持在目标SNR。 外部环路基于接收到的码字（擦除或未擦除）的状态来调整目标SNR以实现目标擦除率。 第三循环基于接收的已知码字的状态（“好”，“坏”或被擦除）来调整擦除阈值，以实现目标条件错误率。
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