公开(公告)号：US20110002233A1

公开(公告)日：2011-01-06

申请号：US12866585

申请日：2008-06-26

申请人： David Hammarwall ,  George Jongren ,  Magnus Lundevall

发明人： David Hammarwall ,  George Jongren ,  Magnus Lundevall

IPC分类号： H04L12/26

CPC分类号： H04W24/02 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/1607 ,  H04L5/0023 ,  H04W72/0406 ,  H04W72/082 ,  H04W72/085 ,  H04W88/08

摘要： Method and apparatus for enabling accurate link quality estimation of a wireless link between a sending node (400) and a receiving node (402). When the sending node receives link state reports from the receiving node, it estimates the current state of the wireless link. The sending node also determines a measurement adjusting parameter if the link state reports are deemed inaccurate in relation to the estimated link state, based on a deviation between the received link state reports and the estimated actual link state. The sending node then sends the determined measurement adjusting parameter to the receiving node, and the receiving node provides a link state report based on signal measurements adjusted by the measurement adjusting parameter. The adjusted link state report can then be used for link adaptation of the wireless link and/or for packet scheduling decisions.

摘要翻译： 用于实现发送节点（400）和接收节点（402）之间的无线链路的精确链路质量估计的方法和装置。 当发送节点从接收节点接收到链路状态报告时，它估计无线链路的当前状态。 如果链路状态报告相对于估计的链路状态被认为不准确，则发送节点还基于接收的链路状态报告与估计的实际链路状态之间的偏差来确定测量调整参数。 然后，发送节点将确定的测量调整参数发送给接收节点，并且接收节点基于由测量调整参数调整的信号测量值来提供链路状态报告。 调整后的链路状态报告然后可用于无线链路的链路自适应和/或用于分组调度决定。

公开(公告)号：US20100296462A1

公开(公告)日：2010-11-25

申请号：US12680585

申请日：2008-09-26

申请人： Hidekazu Taoka

发明人： Hidekazu Taoka

IPC分类号： H04W72/08

CPC分类号： H04L1/0034 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0656 ,  H04L1/0026 ,  H04W72/1231

摘要： A base station apparatus includes a correction unit for correcting a CQI reported from a user apparatus and a scheduler for scheduling based on the corrected CQI. The correction unit uses a correction table to correct the CQI such that if the reported CQI is poor, the CQI is slightly reduced, and otherwise, the CQI is significantly reduced. One method of generating the correction table includes deriving a first SINR in consideration of the number of interference users less than (n-1) and a second SINR in consideration of the number of interference users equal to (n-1) to explore a distribution of the second SINR to the first SINR. In this method, correspondence between the first SINR and the second SINR is determined based on the distribution to generate the correction table.

摘要翻译： 基站装置包括校正单元，用于校正从用户装置报告的CQI和基于校正后的CQI进行调度的调度器。 校正单元使用校正表来校正CQI，使得如果所报告的CQI较差，则CQI略微降低，否则CQI显着降低。 一种生成校正表的方法包括考虑到小于（n-1）的干扰用户的数量和考虑到等于（n-1）的干扰用户的数量来探测分布的第二SINR，导出第一SINR 的第二SINR到第一SINR。 在该方法中，基于分配来确定第一SINR和第二SINR之间的对应关系，以产生校正表。

公开(公告)号：US20100080176A1

公开(公告)日：2010-04-01

申请号：US12240253

申请日：2008-09-29

申请人： David R. Maas ,  Jun Wang ,  Timothy J. Wilson

发明人： David R. Maas ,  Jun Wang ,  Timothy J. Wilson

IPC分类号： H04W72/12 ,  H04L27/28

CPC分类号： H04L1/0015 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0034

摘要： A communication system performs adaptive scheduling by considering present and past reported CQI values and other indications of channel conditions in scheduling a Modulation and Coding Scheme (MCS) and then executing a ‘dithering’ function in order to effectuate an MCS that is intermediate between adjacent discrete MCSs. In one embodiment, the communication system determines a first MCS based on a channel quality metric received from a mobile station (MS) and then transmits data utilizing the first MCS. The communication system assigns weights to each of the first MCS and a second MCS based on whether the transmitted data is acknowledged and, based on the assigned weights, selects one of the first and second MCSs for a subsequent transmission of data to the MS. The communication system also may assign weights to each of a first and second MCS based on a transition between a MIMO-A and a MIMO-B transmission scheme.

摘要翻译： 通信系统通过考虑当前和过去报告的CQI值以及调度调制和编码方案（MCS）中的信道条件的其他指示，然后执行“抖动”功能来执行自适应调度，以便实现在相邻离散点之间的中间的MCS MCSs。 在一个实施例中，通信系统基于从移动台（MS）接收的信道质量度量确定第一MCS，然后使用第一MCS发送数据。 通信系统基于所发送的数据是否被确认，并且基于所分配的权重，向第一MCS和第二MCS中的每一个分配权重，用于选择第一和第二MCS之一，以便随后向MS发送数据。 通信系统还可以基于MIMO-A和MIMO-B传输方案之间的转换来向第一和第二MCS中的每一个分配权重。

公开(公告)号：US07681101B2

公开(公告)日：2010-03-16

申请号：US11735930

申请日：2007-04-16

申请人： David Oran ,  William VerSteeg

发明人： David Oran ,  William VerSteeg

IPC分类号： G08C25/02

CPC分类号： H04L1/0009 ,  H04L1/0034 ,  H04L1/16 ,  H04L1/1825 ,  H04L1/1867 ,  H04L47/10 ,  H04L2001/0093

摘要： In one embodiment, a hybrid packet repair scheme adaptively switches among unicast retransmission, multicast retransmission, and Forward Error Correction (FEC) depending on the receiver population and the nature of the error prompting the repair operation. The NACK patterns are used to heuristically determine the degree of correlation among packet losses. In an additional embodiment, wasting bandwidth and processing on retransmissions of FEC that will fail to correct the errors is avoided by evaluating the nature of the error and the bandwidth needed to optimally repair it. Unicast retransmission, multicast retransmission, or FEC repair is then dynamically performed according to the loss patterns derived from the NACK arrivals and other network conditions.

摘要翻译： 在一个实施例中，混合分组修复方案根据接收机群体和提示修复操作的错误的性质自适应地在单播重传，多播重传和前向纠错（FEC）之间切换。 NACK模式用于启发式地确定分组丢失之间的相关程度。 在另外的实施例中，通过评估错误的性质和最佳修复所需的带宽来避免浪费带宽以及无法纠正错误的FEC重传处理。 然后根据从NACK到达和其他网络条件导出的丢失模式来动态地执行单播重传，多播重传或FEC修复。

公开(公告)号：US07672685B2

公开(公告)日：2010-03-02

申请号：US10450689

申请日：2002-08-28

申请人： Katsutoshi Itoh

发明人： Katsutoshi Itoh

IPC分类号： H04B7/00

CPC分类号： H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0027 ,  H04L1/0032 ,  H04L1/0034 ,  H04L1/1607 ,  H04L1/1887 ,  H04L1/20 ,  H04W52/16 ,  H04W52/223 ,  H04W52/225 ,  H04W52/226 ,  H04W72/0413

摘要： A base station carries out training for obtaining correlation information that correlates the reception quality of a packet channel transmitted from a terminal and the transmission power of an associated channel, and based on the correlation information, uses the transmission power of the associated channel to obtain a predicted value of the reception quality of the packet channel, and controls the transmission of data through the packet channel based on that predicted value. The base station transmits through the associated channel transmission control information for controlling the transmission of the reception quality of the packet channel by the terminal. The terminal controls the transmission of the reception quality of the packet channel based on the transmission control information included in the data of the associated channel transmitted from the base station.

摘要翻译： 基站进行训练，以获得使从终端发送的分组信道的接收质量与相关信道的发送功率相关的相关信息，并且基于相关信息，使用相关信道的发送功率来获得 分组信道的接收质量的预测值，并且基于该预测值来控制通过分组信道的数据的传输。 基站通过用于控制终端对分组信道的接收质量的发送的相关信道传输控制信息进行发送。 终端基于从基站发送的关联信道的数据中包含的发送控制信息，控制分组信道的接收质量的发送。

公开(公告)号：US20090180562A1

公开(公告)日：2009-07-16

申请号：US12409404

申请日：2009-03-23

申请人： William J. McFarland

发明人： William J. McFarland

IPC分类号： H04L27/28 ,  H04K1/10 ,  H04B1/38

CPC分类号： H04W28/0231 ,  H04L1/0002 ,  H04L1/0017 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/20 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0064 ,  H04L25/0224 ,  H04L25/08 ,  H04L27/2602 ,  H04L27/2608 ,  H04L27/2613 ,  H04L27/2626 ,  H04L27/2628

摘要： A multi-carrier communication system such as an OFDM or DMT system has nodes which are allowed to dynamically change their receive and transmit symbol rates, and the number of carriers within their signals. Changing of the symbol rate is done by changing the clocking frequency of the nodes' iFFT and FFT processors, as well as their serializers and deserializers. The nodes have several ways of dynamically changing the number of earners used. The selection of symbol rate and number of earners can be optimized for a given channel based on explicit channel measurements, a priori knowledge of the channel, or past experience. Provision is made for accommodating legacy nodes that may have constraints in symbol rate or the number of carriers they can support. The receiver can determine the correct symbol rate and number of earners through a priori knowledge, a first exchange of packets in a base mode that all nodes can understand, or an indication in the header of the data packet which is transmitted in a base mode of operation that all nodes can understand.

摘要翻译： 诸如OFDM或DMT系统的多载波通信系统具有被允许动态地改变其接收和发送符号率的节点以及它们的信号内的载波数量。 通过改变节点iFFT和FFT处理器的时钟频率，以及它们的串行器和解串器来改变符号速率。 这些节点有几种动态改变所使用的收入人数的方法。 可以根据明确的渠道测量，渠道的先验知识或过去的经验，为特定频道优化符号率和收入人数的选择。 规定了用于容纳可能具有符号率限制或可支持的运营商数量的传统节点。 接收机可以通过先验知识确定正确的符号速率和收入者数量，以所有节点可以理解的基本模式的分组的第一次交换，或以基本模式发送的数据分组头部中的指示 所有节点都可以理解的操作。

公开(公告)号：US07522555B2

公开(公告)日：2009-04-21

申请号：US11040955

申请日：2005-01-21

申请人： Qinghua Li ,  Xintian E. Lin

发明人： Qinghua Li ,  Xintian E. Lin

IPC分类号： H04B7/212

CPC分类号： H04B17/373 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0854 ,  H04B17/14 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0019 ,  H04L1/0026 ,  H04L1/0032 ,  H04L1/0034 ,  H04L1/06 ,  H04L25/0206 ,  H04L25/0224 ,  H04L25/023

摘要： A system, apparatus, method and article to manage channel prediction for a wireless communication system are described. The apparatus may include a media access control processor to perform channel prediction, and a transceiver to communicate information using the channel prediction. Other embodiments are described and claimed.

摘要翻译： 描述了一种用于管理无线通信系统的信道预测的系统，装置，方法和文章。 该装置可以包括用于执行信道预测的媒体访问控制处理器，以及使用信道预测来传送信息的收发器。 描述和要求保护其他实施例。

公开(公告)号：US20090083602A1

公开(公告)日：2009-03-26

申请号：US12250324

申请日：2008-10-13

申请人： Sandip Sarkar ,  Tao Chen ,  Edward G. Tiedemann, JR. ,  Peter Gaal

发明人： Sandip Sarkar ,  Tao Chen ,  Edward G. Tiedemann, JR. ,  Peter Gaal

IPC分类号： H04L1/18

CPC分类号： H04L1/1812 ,  H04B17/24 ,  H04B17/309 ,  H04J13/0048 ,  H04L1/0026 ,  H04L1/0034 ,  H04L1/0057 ,  H04L1/0073 ,  H04L1/08 ,  H04L1/1607 ,  H04L1/1671 ,  H04L1/1825 ,  H04L1/1845 ,  H04L1/1854 ,  H04L1/1858 ,  H04L2001/0093 ,  H04L2001/125 ,  H04W52/48

摘要： An acknowledgement method in a wireless communication system. Initially, a reverse supplemental channel (R-SCH) frame is received at a base station. The base station then transmits an acknowledgement (ACK) signal if quality of the received R-SCH frame is indicated as being good. A negative acknowledgement (NAK) signal is transmitted only if the received data frame is indicated as being bad but has enough energy such that, if combined with energy from retransmission of the data frame, it would be sufficient to permit correct decoding of the data frame. If the best base station is known, the acknowledgement method may reverse the transmission of the acknowledgement signals for the best base station so that only NAK signal is sent. A positive acknowledgement is assumed in the absence of an acknowledgement. This is done to minimize the transmit power requirements.

摘要翻译： 无线通信系统中的确认方法。 最初，在基站接收到反向补充信道（R-SCH）帧。 然后，如果接收的R-SCH帧的质量被表示为良好，则基站然后发送确认（ACK）信号。 仅当所接收的数据帧被表示为坏但具有足够的能量使得如果与来自数据帧的重传的能量相结合时才允许数据帧的正确解码就足够了，才发送否定确认（NAK）信号 。 如果最好的基站是已知的，则确认方法可以反转用于最佳基站的确认信号的发送，从而仅发送NAK信号。 在没有确认的情况下假设肯定确认。 这样做是为了尽量减少发射功率的要求。

公开(公告)号：US07493132B2

公开(公告)日：2009-02-17

申请号：US10367498

申请日：2003-02-14

申请人： Durga Prasad Malladi ,  Serge Willenegger ,  Xiaoxia Zhang

发明人： Durga Prasad Malladi ,  Serge Willenegger ,  Xiaoxia Zhang

IPC分类号： H04B7/00

CPC分类号： H04W28/22 ,  H04L1/0002 ,  H04L1/0034 ,  H04L1/1809 ,  H04L1/1816 ,  H04L1/203 ,  H04W52/146 ,  H04W52/26 ,  H04W52/40

摘要： Techniques are provided herein to mitigate the effects of link imbalance for the uplink between a terminal (or UE) and multiple base stations (or Node Bs). An uplink transmission rate is selected based on an adjusted nominal uplink transmission rate and the difference between power control commands from different nodes.

摘要翻译： 本文提供了技术来减轻终端（或UE）和多个基站（或节点B）之间的上行链路的链路不平衡的影响。 基于经调整的标称上行传输速率和来自不同节点的功率控制命令之间的差异来选择上行传输速率。

公开(公告)号：US20080267168A1

公开(公告)日：2008-10-30

申请号：US11741571

申请日：2007-04-27

申请人： Zhijun Cai ,  James Earl Womack ,  Wei Wu

发明人： Zhijun Cai ,  James Earl Womack ,  Wei Wu

IPC分类号： H04L12/66

CPC分类号： H04L1/1867 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0025 ,  H04L1/0034 ,  H04L1/1692 ,  H04L1/1812 ,  H04L2001/0093

摘要： Systems and methods for performing MCS adaptation are provided. In some cases, the network performs MCS adaptation based on received ACKs.

摘要翻译： 提供了用于执行MCS适配的系统和方法。 在一些情况下，网络基于接收的ACK执行MCS适配。