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401 条记录 (耗时 0.031 秒)

    Layered reuse for a wireless communication system
    75.
    发明授权
    Layered reuse for a wireless communication system 有权
    无线通信系统的分层重用

    公开(公告)号：US09585023B2

    公开(公告)日：2017-02-28

    申请号：US10858870

    申请日：2004-06-01

    申请人： Tingfang Ji ,  Avneesh Agrawal ,  Gavin Horn ,  Edward Harrison Teague

    发明人： Tingfang Ji ,  Avneesh Agrawal ,  Gavin Horn ,  Edward Harrison Teague

    IPC分类号： H04W16/02 ,  H04W16/12 ,  H04W72/04 ,  H04W72/08

    CPC分类号： H04W16/02 ,  H04W16/12 ,  H04W72/048 ,  H04W72/085

    摘要： To reduce inter-sector interference for “weak” users and combat a potentially large variation in interference levels observed by “strong” and weak users, system resources (e.g., frequency subbands) available for data transmission in a system are partitioned into multiple (e.g., three) disjoint sets. Each sector in the system is assigned one subband set. Neighboring sectors are assigned different subband sets such that the subband set assigned to each sector is orthogonal to the subband sets assigned to neighboring sectors. Each sector has an assigned subband set and an unassigned subband set, which contains all subbands not in the assigned set. Weak users in each sector (which are typically strong interferers to neighboring sectors) are allocated subbands in the assigned set. Strong users in each sector are allocated subbands in the unassigned set. The weak users in each sector are then orthogonal to strong interferers in neighboring sectors.

    摘要翻译： 为了减少“弱”用户的扇区间干扰，并且打击“强”和弱用户观察到的干扰水平的潜在巨大变化，可用于系统中的数据传输的系统资源（例如，频率子带）被划分为多个（例如， ，三）不相交的集合。 系统中的每个扇区被分配一个子带集。 分配相邻扇区的不同子带组，使得分配给每个扇区的子带集与分配给相邻扇区的子带集正交。 每个扇区具有分配的子带集和未分配的子带集合，其包含不在分配集合中的所有子带。 每个扇区（通常是相邻扇区的强干扰源）中的弱用户在分配集中被分配子带。 每个扇区中的强用户在未分配的集合中分配子带。 每个扇区中的弱用户然后与相邻扇区中的强干扰源正交。

    Power control utilizing multiple rate interference indications
    76.
    发明授权
    Power control utilizing multiple rate interference indications 有权
    利用多速率干扰指示的功率控制

    公开(公告)号：US08700082B2

    公开(公告)日：2014-04-15

    申请号：US11620030

    申请日：2007-01-04

    申请人： Mohammad J. Borran ,  Aamod Khandekar ,  Avneesh Agrawal ,  Tingfang Ji

    发明人： Mohammad J. Borran ,  Aamod Khandekar ,  Avneesh Agrawal ,  Tingfang Ji

    IPC分类号： H04W52/04

    CPC分类号： H04W52/247 ,  H04W52/241 ,  H04W52/243 ,  H04W52/60 ,  Y02D70/10

    摘要： Systems and methodologies are described that facilitate mitigation of interference in a wireless communication environment. Terminals can utilize interference information provided by neighboring sectors to adjust transmit power and reduce interference. Access points can provide two sets or types of interference information. The first type can be transmitted over a large coverage area, requiring significant overhead and limiting the transmission rate. Access points can also provide a second set or type of interference information directed at smaller coverage area, such as an area proximate to the edge of the supported sector. This second type of interference information can be utilized by terminals that include the access point within their active set. The second set of interference information can be provided at a higher rate than the first set due to decreased overhead requirements. Terminals can utilize both sets of interference information to adjust transmit power.

    摘要翻译： 描述了有助于减轻无线通信环境中的干扰的系统和方法。 终端可以利用相邻扇区提供的干扰信息来调整发射功率并减少干扰。 接入点可以提供两组或多种干扰信息。 第一种类型可以在大的覆盖区域上传输，需要大量开销并限制传输速率。 接入点还可以提供针对较小覆盖区域的第二组或干扰类型，例如靠近所支持扇区边缘的区域。 这种第二类型的干扰信息可以由包括其活动集中的接入点的终端利用。 由于降低的开销要求，可以以比第一组更高的速率提供第二组干扰信息。 终端可以利用两组干扰信息来调整发射功率。

    METHODS AND SYSTEMS FOR ADAPTIVE TRANSMISSION OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM
    77.
    发明申请
    METHODS AND SYSTEMS FOR ADAPTIVE TRANSMISSION OF CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    无线通信系统中自适应传输控制信息的方法与系统

    公开(公告)号：US20090022178A1

    公开(公告)日：2009-01-22

    申请号：US12165644

    申请日：2008-06-30

    申请人： Tingfang Ji ,  Ayman Fawzy Naguib ,  Avneesh Agrawal

    发明人： Tingfang Ji ,  Ayman Fawzy Naguib ,  Avneesh Agrawal

    IPC分类号： H04J3/16 ,  H04L29/06

    CPC分类号： H04W28/06 ,  H04L5/0053 ,  H04L5/0094 ,  H04L27/2602 ,  H04W72/1242 ,  H04W72/14

    摘要： A method for adaptive transmission of control information in a wireless communication system may include generating a control segment carrying control information. The control segment may have a configurable size. The method may also include generating a pointer for the control segment. The pointer may indicate a location of the control segment in a downlink subframe. The pointer may also indicate a size of the control segment. The method may also include sending the pointer and the control segment.

    摘要翻译： 无线通信系统中的控制信息的自适应传输方法可以包括生成携带控制信息的控制段。 控制段可以具有可配置的大小。 该方法还可以包括生成用于控制段的指针。 指针可以指示下行链路子帧中的控制段的位置。 指针也可以指示控制段的大小。 该方法还可以包括发送指针和控制段。

    SDMA resource management
    78.
    发明申请
    SDMA resource management 有权
    SDMA资源管理

    公开(公告)号：US20070097910A1

    公开(公告)日：2007-05-03

    申请号：US11261837

    申请日：2005-10-27

    申请人： Tingfang Ji ,  Dhananjay Gore ,  Alexei Gorokhov ,  Min Dong ,  Avneesh Agrawal

    发明人： Tingfang Ji ,  Dhananjay Gore ,  Alexei Gorokhov ,  Min Dong ,  Avneesh Agrawal

    IPC分类号： H04Q7/00

    CPC分类号： H04W72/06 ,  H04B1/713 ,  H04B7/026 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/023

    摘要： A method for allocating resources in a wireless communications environment comprises receiving a mapping between a first hop-port and frequency range, and determining whether to map a second access terminal to a second hop-port that is mapped to at least the same frequency range during a substantially similar instance in time, the determination made as a function of characteristics relating to a first access terminal associated with the first hop-port. The method can further include determining that the first access terminal is a candidate for employing Space-Division Multiple Access (SDMA), and mapping the second-hop port and associating the second access terminal with the second hop-port when the second access terminal is also a candidate for employing SDMA.

    摘要翻译： 一种用于在无线通信环境中分配资源的方法包括：接收第一跳跃端口和频率范围之间的映射，以及确定是否将第二接入终端映射到映射到至少相同频率范围的第二跳频端口 基本相似的时间实例，根据与与第一跳跃端口相关联的第一接入终端的特性的函数进行确定。 该方法还可以包括确定第一接入终端是采用空分多址（SDMA）的候选者，并且当第二接入终端是第二接入终端时，映射第二跳接口并将第二接入终端与第二跳接口相关联 也是采用SDMA的候选人。

    Intra-cell common reuse for a wireless communications system
    79.
    发明授权
    Intra-cell common reuse for a wireless communications system 有权
    无线通信系统的小区内常用重用

    公开(公告)号：US08014781B2

    公开(公告)日：2011-09-06

    申请号：US10969540

    申请日：2004-10-20

    申请人： Tingfang Ji ,  Avneesh Agrawal

    发明人： Tingfang Ji ,  Avneesh Agrawal

    IPC分类号： H04W40/00

    CPC分类号： H04W72/082 ,  H04L5/023 ,  H04W16/24 ,  H04W72/085

    摘要： To avoid or reduce intra-cell interference, each sector of a cell is associated with a sector-specific set of system resources (e.g., subbands) and at least one non-overlapping common set of system resources. Each common set for each sector includes system resources observing little or no interference from at least one other sector in the cell. The channel condition for a terminal in a given sector x is ascertained based on forward and/or reverse link measurements for the terminal. The terminal is assigned system resources from a common set or a sector-specific set for sector x based on the terminal's channel condition. For example, if the terminal observes high interference from another sector y, then the terminal is assigned system resources from a common set that observes little or no interference from sector y. The techniques may be used for an OFDMA system that uses frequency hopping.

    摘要翻译： 为了避免或减少小区内干扰，小区的每个扇区与系统资源（例如子带）的扇区特定集合和至少一个不重叠的公共系统资源集合相关联。 每个扇区的每个公共集合包括观察到小区中至少一个其他扇区几乎或不受干扰的系统资源。 基于终端的前向和/或反向链路测量来确定给定扇区x中的终端的信道条件。 基于终端的信道条件，从通用集或针对扇区x的扇区特定集分配终端。 例如，如果终端观察到来自另一个扇区y的高干扰，则终端从公共集分配系统资源，其观察到来自扇区y的很少或没有干扰。 这些技术可以用于使用跳频的OFDMA系统。

    POWER CONTROL UTILIZING MULTIPLE RATE INTERFERENCE INDICATIONS
    80.
    发明申请
    POWER CONTROL UTILIZING MULTIPLE RATE INTERFERENCE INDICATIONS 有权
    功率控制使用多种速率干扰指示

    公开(公告)号：US20090149140A1

    公开(公告)日：2009-06-11

    申请号：US11620030

    申请日：2007-01-04

    申请人： Mohammad J. Borran ,  Aamod Khandekar ,  Avneesh Agrawal ,  Tingfang Ji

    发明人： Mohammad J. Borran ,  Aamod Khandekar ,  Avneesh Agrawal ,  Tingfang Ji

    IPC分类号： H04B1/04

    CPC分类号： H04W52/247 ,  H04W52/241 ,  H04W52/243 ,  H04W52/60 ,  Y02D70/10

    摘要： Systems and methodologies are described that facilitate mitigation of interference in a wireless communication environment. Terminals can utilize interference information provided by neighboring sectors to adjust transmit power and reduce interference. Access points can provide two sets or types of interference information. The first type can be transmitted over a large coverage area, requiring significant overhead and limiting the transmission rate. Access points can also provide a second set or type of interference information directed at smaller coverage area, such as an area proximate to the edge of the supported sector. This second type of interference information can be utilized by terminals that include the access point within their active set. The second set of interference information can be provided at a higher rate than the first set due to decreased overhead requirements. Terminals can utilize both sets of interference information to adjust transmit power.

    摘要翻译： 描述了有助于减轻无线通信环境中的干扰的系统和方法。 终端可以利用相邻扇区提供的干扰信息来调整发射功率并减少干扰。 接入点可以提供两组或多种干扰信息。 第一种类型可以在大的覆盖区域上传输，需要大量开销并限制传输速率。 接入点还可以提供针对较小覆盖区域的第二组或干扰类型，例如靠近所支持扇区边缘的区域。 这种第二类型的干扰信息可以由包括其活动集中的接入点的终端利用。 由于降低的开销要求，可以以比第一组更高的速率提供第二组干扰信息。 终端可以利用两组干扰信息来调整发射功率。