Method and apparatus for scheduling in a wireless network
    41.
    发明申请
    Method and apparatus for scheduling in a wireless network 有权
    用于在无线网络中进行调度的方法和装置

    公开(公告)号:US20050270975A1

    公开(公告)日:2005-12-08

    申请号:US11086085

    申请日:2005-03-21

    摘要: Techniques for scheduling flows and links for transmission are described. Each link is an oriented source-destination pair and carries one or more flows. Each flow may be associated with throughput, delay, feedback (e.g., acknowledgments (ACKs)) and/or other requirements. A serving interval is determined for each flow based on the requirements for the flow. A serving interval is determined for each link based on the serving intervals for all of the flows sent on the link. Each link is scheduled for transmission at least once in each serving interval, if system resources are available, to ensure that the requirements for all flows sent on the link are met. The links are also scheduled in a manner to facilitate closed loop rate control. The links are further scheduled such that ACKs for one or more layers in a protocol stack are sent at sufficiently fast rates.

    摘要翻译: 描述用于调度流和用于传输的链路的技术。 每个链路是一个定向的源 - 目的地对,并携带一个或多个流。 每个流程可以与吞吐量,延迟,反馈(例如确认(ACK))和/或其他要求相关联。 根据流量的要求为每个流量确定服务间隔。 基于在链路上发送的所有流的服务间隔,为每个链路确定服务间隔。 如果系统资源可用,则每个链路被调度至少在每个服务间隔中传输一次,以确保满足在链路上发送的所有流的要求。 这些链路的安排也是为了方便闭环速率控制。 进一步调度链路,使得以足够快的速率发送协议栈中的一个或多个层的ACK。

    Method and structure for monitoring pollution and prefetches due to speculative accesses
    42.
    发明申请
    Method and structure for monitoring pollution and prefetches due to speculative accesses 有权
    由于投机访问监测污染和预取的方法和结构

    公开(公告)号:US20050251629A1

    公开(公告)日:2005-11-10

    申请号:US10840154

    申请日:2004-05-05

    IPC分类号: G06F12/00 G06F12/08 G06F12/12

    摘要: A method and structure for equipping a cache with information to enable the processor to track and report whether a given speculative access causes prefetches and/or pollutions of the cache. Two types of events are tracked in one of two different ways: first by counting/tracking prefetch operations, either globally or on a per instruction address basis and then by counting/tracking cache pollutions, either globally or on a per instruction address basis.

    摘要翻译: 用于为高速缓存装备信息以使处理器能够跟踪并报告给定的投机访问是否导致高速缓存的预取和/或污染的方法和结构。 以两种不同的方式之一跟踪两种类型的事件:首先通过全局或每个指令地址进行计数/跟踪预取操作,然后通过对全局或每个指令地址进行计数/跟踪缓存污染。

    Automated design of processor systems using feedback from internal measurements of candidate systems
    43.
    发明授权
    Automated design of processor systems using feedback from internal measurements of candidate systems 失效
    使用候选系统内部测量的反馈自动设计处理器系统

    公开(公告)号:US06408428B1

    公开(公告)日:2002-06-18

    申请号:US09378290

    申请日:1999-08-20

    IPC分类号: G06F1750

    CPC分类号: G06F17/5045 G06F2217/08

    摘要: An automated design system for VLIW processors explores a parameterized design space to assist in identifying candidate processor designs that satisfy desired design constraints, such as processor cost and performance. A VLIW synthesis process takes as input a specification of processor parameters and synthesizes a datapath specification, an instruction format design, and a control path specification. The synthesis process also extracts a machine description suitable to re-target a compiler. The re-targeted compiler generates operation issue statistics for an application program or set of programs. Using these statistics, a procedure for searching the design space can extract internal resources utilization information that is used to determine new candidate processors for evaluation.

    摘要翻译: 用于VLIW处理器的自动化设计系统探索参数化设计空间,以帮助识别满足期望设计约束(例如处理器成本和性能)的候选处理器设计。 VLIW合成过程将处理器参数的规范作为输入,并合成数据路径规范,指令格式设计和控制路径规范。 合成过程还提取适合于重新定位编译器的机器描述。 重新定位的编译器生成应用程序或程序集的操作问题统计信息。 使用这些统计信息,搜索设计空间的过程可以提取用于确定新的候选处理器进行评估的内部资源利用率信息。

    Sector interference management based on inter-sector performance
    44.
    发明授权
    Sector interference management based on inter-sector performance 有权
    基于部门间业绩的行业干扰管理

    公开(公告)号:US08768372B2

    公开(公告)日:2014-07-01

    申请号:US12260834

    申请日:2008-10-29

    IPC分类号: H04W4/00

    摘要: Providing fairness-based metrics for managing inter-sector interference of a mobile AN is described herein. By way of example, accumulation of resource utilization messages (RUMs) at a sector of the mobile AN can be based at least in part on a performance metric of that sector as compared with one or more neighboring sectors. In at least one aspect, performance metrics of multiple sectors of the mobile AN can be aggregated and a RUM accumulation rate of each sector is determined based on the aggregated metric. Accumulation rates can further be updated periodically as sector and/or aggregated metrics of the mobile AN change. Accordingly, accumulation and utilization of RUMs is based on inter-sector fairness to optimize overall wireless communication quality of service for the mobile AN.

    摘要翻译: 本文描述了提供用于管理移动AN的扇区间干扰的基于公平的度量。 作为示例,移动AN的扇区处的资源利用消息(RUM)的累积可以至少部分地基于与一个或多个相邻扇区相比该扇区的性能度量。 在至少一个方面,可以聚合移动AN的多个扇区的性能度量,并且基于聚合度量确定每个扇区的RUM累积速率。 随着移动AN的扇区和/或聚合度量的变化,累积率可以进一步定期更新。 因此,RUM的积累和利用基于跨部门公平性来优化移动AN的整体无线通信服务质量。

    Transmission mode and rate selection for a wireless communication system
    45.
    发明授权
    Transmission mode and rate selection for a wireless communication system 有权
    无线通信系统的传输模式和速率选择

    公开(公告)号:US08355372B2

    公开(公告)日:2013-01-15

    申请号:US12463078

    申请日:2009-05-08

    IPC分类号: H04W4/00

    摘要: To select a transmission mode to use for a data transmission via a MIMO channel from station A to station B, station A obtains channel information used for spatial processing and determines the age of this information. Station A selects one of multiple transmission modes based on the age of the channel information and possibly other information (e.g., the fading characteristic of the MIMO channel). To select rate(s) to use for the data transmission, station A obtains channel state information (CSI) indicative of the received signal quality for the MIMO channel, e.g., received SNRs or “initial” rates. Station A determines the age of the CSI and selects one or more “final” rates based on the CSI, the age of the CSI, the selected transmission mode, and possibly other information. Station A processes data in accordance with the selected transmission mode and final rate(s) and transmits the processed data to station B.

    摘要翻译: 为了选择通过从站A到站B的MIMO信道进行数据传输的传输模式,站A获得用于空间处理的信道信息,并确定该信息的年龄。 站A基于信道信息的年龄和可能的其他信息(例如,MIMO信道的衰落特性)来选择多种传输模式之一。 为了选择用于数据传输的速率,站A获得指示MIMO信道的接收信号质量的信道状态信息(CSI),例如接收到的SNR或初始速率。 站A确定CSI的年龄,并且基于CSI,CSI的年龄,所选择的传输模式以及可能的其他信息来选择一个或多个最终速率。 站A根据选择的传输模式和最终速率处理数据,并将处理的数据发送到站B.

    Embedding information in an 802.11 signal field
    46.
    发明授权
    Embedding information in an 802.11 signal field 有权
    将信息嵌入到802.11信号字段中

    公开(公告)号:US08351519B2

    公开(公告)日:2013-01-08

    申请号:US12269201

    申请日:2008-11-12

    IPC分类号: H04L27/28 H04L27/00

    CPC分类号: H04L27/2613

    摘要: Techniques and apparatus for embedding one or more bits of 802.11 Very High Throughput (VHT) information in existing IEEE 802.11 preamble fields are provided. As will be described herein, because different combinations of modulation techniques, coding schemes, and transmission lengths result in the same transmit time (e.g., in terms of symbol length), a clever choice of modulation, coding, and length may allow some extra information to be embedded in a legacy field for use by VHT stations. In this manner, the total VHT preamble transmission time may potentially be reduced, thereby increasing the efficiency of the physical layer (PHY). Moreover, the embedded bits may most likely be invisible to legacy stations, since the transmission time that such stations compute will be independent of these bits by design.

    摘要翻译: 提供了用于在现有的IEEE 802.11前导字段中嵌入一个或多个802.11非常高吞吐量(VHT)信息的技术和装置。 如本文将要描述的,因为调制技术,编码方案和传输长度的不同组合导致相同的发送时间(例如,在符号长度方面),调制,编码和长度的巧妙选择可以允许一些额外的信息 嵌入到传统领域以供VHT站使用。 以这种方式,可以潜在地减少总VHT前导码传输时间,从而提高物理层(PHY)的效率。 此外,嵌入式位可能很可能对于传统站是不可见的,因为这样的站计算的传输时间将通过设计独立于这些位。

    Rate selection for eigensteering in a MIMO communication system
    47.
    发明授权
    Rate selection for eigensteering in a MIMO communication system 有权
    MIMO通信系统中本征导向的速率选择

    公开(公告)号:US07872981B2

    公开(公告)日:2011-01-18

    申请号:US11128843

    申请日:2005-05-12

    摘要: Techniques for selecting rates for data transmission on eigenmodes of a MIMO channel are described. An access point transmits an unsteered MIMO pilot via the downlink. A user terminal estimates the downlink channel quality based on the downlink unsteered MIMO pilot and transmits an unsteered MIMO pilot and feedback information via the uplink. The feedback information is indicative of the downlink channel quality. The access point estimates the uplink channel quality and obtains a channel response matrix based on the uplink unsteered MIMO pilot, decomposes the channel response matrix to obtain eigenvectors and channel gains for the eigenmodes of the downlink, and selects rates for the eigenmodes based on the estimated uplink channel quality, the channel gains for the eigenmodes, and the feedback information. The access point processes data based on the selected rates and transmits steered data and a steered MIMO pilot on the eigenmodes with the eigenvectors.

    摘要翻译: 描述了用于选择MIMO信道的本征模式上的数据传输速率的技术。 接入点经由下行链路发送非导向MIMO导频。 用户终端基于下行链路非导向MIMO导频来估计下行链路信道质量,并通过上行链路发送非导向MIMO导频和反馈信息。 反馈信息表示下行链路信道质量。 接入点估计上行链路信道质量,并且基于上行链路非导向MIMO导频获得信道响应矩阵,分解信道响应矩阵以获得用于下行链路本征模式的特征向量和信道增益,并且基于所估计的本征模式选择本征模式的速率 上行链路信道质量,本征模式的信道增益和反馈信息。 接入点基于所选择的速率处理数据,并在本征矢量的本征模式上传输转向数据和转向MIMO导频。

    TRANSMISSION MODE AND RATE SELECTION FOR A WIRELESS COMMUNICATION SYSTEM
    50.
    发明申请
    TRANSMISSION MODE AND RATE SELECTION FOR A WIRELESS COMMUNICATION SYSTEM 有权
    无线通信系统的传输模式和速率选择

    公开(公告)号:US20090290655A1

    公开(公告)日:2009-11-26

    申请号:US12463078

    申请日:2009-05-08

    IPC分类号: H04B7/02

    摘要: To select a transmission mode to use for a data transmission via a MIMO channel from station A to station B, station A obtains channel information used for spatial processing and determines the age of this information. Station A selects one of multiple transmission modes based on the age of the channel information and possibly other information (e.g., the fading characteristic of the MIMO channel). To select rate(s) to use for the data transmission, station A obtains channel state information (CSI) indicative of the received signal quality for the MIMO channel, e.g., received SNRs or “initial” rates. Station A determines the age of the CSI and selects one or more “final” rates based on the CSI, the age of the CSI, the selected transmission mode, and possibly other information. Station A processes data in accordance with the selected transmission mode and final rate(s) and transmits the processed data to station B.

    摘要翻译: 为了选择通过从站A到站B的MIMO信道进行数据传输的传输模式,站A获得用于空间处理的信道信息,并确定该信息的年龄。 站A基于信道信息的年龄和可能的其他信息(例如,MIMO信道的衰落特性)来选择多种传输模式之一。 为了选择用于数据传输的速率,站A获得指示MIMO信道的接收信号质量的信道状态信息(CSI),例如接收到的SNR或“初始”速率。 站A确定CSI的年龄,并且基于CSI,CSI的年龄,所选择的传输模式以及可能的其他信息来选择一个或多个“最终”速率。 站A根据选择的传输模式和最终速率处理数据,并将处理的数据发送到站B.