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。

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。

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。

公开(公告)号：US20070097935A1

公开(公告)日：2007-05-03

申请号：US11369466

申请日：2006-03-07

申请人： Alexei Gorokhov ,  Tingfang Ji ,  Aamod Khandekar ,  Avneesh Agrawal

发明人： Alexei Gorokhov ,  Tingfang Ji ,  Aamod Khandekar ,  Avneesh Agrawal

IPC分类号： H04Q7/24

CPC分类号： H04W28/22

摘要： Systems and methods are disclosed that facilitate dynamic reverse link rate control by an access terminal and in-band signaling of changes of the reverse link rate by the access terminal.

摘要翻译： 公开了促进接入终端的动态反向链路速率控制和接入终端对反向链路速率变化的带内信令的系统和方法。

公开(公告)号：US08483691B2

公开(公告)日：2013-07-09

申请号：US12141557

申请日：2008-06-18

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

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

IPC分类号： H04W36/00 ,  H04W40/00

CPC分类号： H04W16/12 ,  H04W16/02 ,  H04W72/0453 ,  H04W72/082

摘要： For restrictive reuse, each cell (or each sector) is assigned (1) a set of usable subbands that may be allocated to users in the cell and (2) a set of forbidden subbands that is not used. The usable and forbidden sets for each cell are orthogonal to one other. The usable set for each cell also overlaps the forbidden set for each neighboring cell. A user u in a cell x may be allocated subbands in the usable set for that cell. If user u observes/causes high level of interference from/to a neighboring cell y, then user u may be allocated subbands from a “restricted” set containing subbands included in both the usable set for cell x and the forbidden set for cell y. User u would then observe/cause no interference from/to cell y. The subband restriction may be extended to avoid interference from multiple neighboring cells.

摘要翻译： 对于限制性重用，分配每个小区（或每个扇区）（1）可以分配给小区中的用户的一组可用子带，以及（2）未使用的一组禁止子带。 每个单元的可用和禁止的集合彼此正交。 每个单元的可用集合也与每个相邻单元的禁止集重叠。 小区x中的用户u可以被分配给该小区的可用集合中的子带。 如果用户u观察到/来自相邻小区y的高水平的干扰，则可以从包含小区x的可用集合和小区y的禁止集合的包含子带的“限制”集合中分配用户u的子带。 用户u然后将观察/不造成来自/到小区y的干扰。 可以扩展子带限制以避免来自多个相邻小区的干扰。

公开(公告)号：US20090190500A1

公开(公告)日：2009-07-30

申请号：US12362289

申请日：2009-01-29

申请人： Tingfang Ji ,  Avneesh Agrawal ,  Aamod Khandekar ,  Alexei Gorokhov

发明人： Tingfang Ji ,  Avneesh Agrawal ,  Aamod Khandekar ,  Alexei Gorokhov

IPC分类号： H04L12/28

CPC分类号： H04W36/0083 ,  H04W36/20 ,  H04W36/22 ,  H04W36/30 ,  H04W36/36 ,  H04W48/20 ,  H04W84/045 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

摘要： Systems and methodologies are described that facilitate selecting and/or reselecting one or more access points, related cells, or carriers based at least in part on calculating an energy efficiency related to the access points. In particular, the energy efficiency can be based at least in part on an estimated pathloss and/or a level of interference related to communicating with the access points. Moreover, load parameters related to the access point can be received and evaluated in selecting and/or reselecting the access point. Thus, access points can be selected or reselected based on parameters other than forward link transmit power. In addition, pathloss and/or interference levels can be weighed based on access point type to prevent macrocell overloading.

摘要翻译： 描述了至少部分地基于计算与接入点相关的能量效率来促进选择和/或重新选择一个或多个接入点，相关小区或载波的系统和方法。 特别地，能量效率可以至少部分地基于与与接入点通信相关的估计路径损耗和/或干扰水平。 此外，可以在选择和/或重新选择接入点时接收和评估与接入点相关的负载参数。 因此，可以基于除了前向链路发送功率之外的参数来选择或重新选择接入点。 此外，可以基于接入点类型来称量路径损耗和/或干扰电平，以防止宏单元过载。

公开(公告)号：US08693405B2

公开(公告)日：2014-04-08

申请号：US11261837

申请日：2005-10-27

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

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

IPC分类号： H04B7/00

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。

公开(公告)号：US08638759B2

公开(公告)日：2014-01-28

申请号：US12362289

申请日：2009-01-29

申请人： Tingfang Ji ,  Avneesh Agrawal ,  Aamod Khandekar ,  Alexei Gorokhov

发明人： Tingfang Ji ,  Avneesh Agrawal ,  Aamod Khandekar ,  Alexei Gorokhov

IPC分类号： H04W52/22

CPC分类号： H04W36/0083 ,  H04W36/20 ,  H04W36/22 ,  H04W36/30 ,  H04W36/36 ,  H04W48/20 ,  H04W84/045 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146

摘要： Systems and methodologies are described that facilitate selecting and/or reselecting one or more access points, related cells, or carriers based at least in part on calculating an energy efficiency related to the access points. In particular, the energy efficiency can be based at least in part on an estimated pathloss and/or a level of interference related to communicating with the access points. Moreover, load parameters related to the access point can be received and evaluated in selecting and/or reselecting the access point. Thus, access points can be selected or reselected based on parameters other than forward link transmit power. In addition, pathloss and/or interference levels can be weighed based on access point type to prevent macrocell overloading.

摘要翻译： 描述了至少部分地基于计算与接入点相关的能量效率来促进选择和/或重新选择一个或多个接入点，相关小区或载波的系统和方法。 特别地，能量效率可以至少部分地基于与与接入点通信相关的估计路径损耗和/或干扰水平。 此外，可以在选择和/或重新选择接入点时接收和评估与接入点相关的负载参数。 因此，可以基于除了前向链路发送功率之外的参数来选择或重新选择接入点。 此外，可以基于接入点类型来称量路径损耗和/或干扰电平，以防止宏单元过载。

公开(公告)号：US08526963B2

公开(公告)日：2013-09-03

申请号：US10871084

申请日：2004-06-18

申请人： Tingfang Ji ,  Avneesh Agrawal ,  Edward H. Teague

发明人： Tingfang Ji ,  Avneesh Agrawal ,  Edward H. Teague

IPC分类号： H04Q7/20 ,  H04B15/00 ,  H04L5/26

CPC分类号： H04W16/12 ,  H04W16/02 ,  H04W72/0453 ,  H04W72/082

摘要： For restrictive reuse, each cell (or each sector) is assigned (1) a set of usable subbands that may be allocated to users in the cell and (2) a set of forbidden subbands that is not used. The usable and forbidden sets for each cell are orthogonal to one other. The usable set for each cell also overlaps the forbidden set for each neighboring cell. A user u in a cell x may be allocated subbands in the usable set for that cell. If user u observes/causes high level of interference from/to a neighboring cell y, then user u may be allocated subbands from a “restricted” set containing subbands included in both the usable set for cell x and the forbidden set for cell y. User u would then observe/cause no interference from/to cell y. The subband restriction may be extended to avoid interference from multiple neighboring cells.

公开(公告)号：US20090227263A1

公开(公告)日：2009-09-10

申请号：US12206603

申请日：2008-09-08

申请人： Avneesh Agrawal ,  Tingfang Ji ,  Aamod Khandekar

发明人： Avneesh Agrawal ,  Tingfang Ji ,  Aamod Khandekar

IPC分类号： H04W72/04 ,  H04B15/00

CPC分类号： H04W52/343 ,  H04W16/16 ,  H04W48/08 ,  H04W52/247 ,  H04W84/045 ,  H04W88/04

摘要： Techniques for mitigating interference in a wireless communication system are described. In an aspect, a base station may periodically broadcast a load indication to convey information such as whether or not to use interference mitigation, which interference mitigation scheme to use, resources to apply interference mitigation, duration of interference mitigation, etc. Terminals may receive the load indication and perform interference mitigation as indicated by the load indication. In one design, a terminal may receive a load indication from a base station that the terminal desires to access. The terminal may determine whether to obtain reserved resources having reduced interference based on the load indication. In another design, a terminal may receive a load indication from a neighbor base station. The terminal may determine whether to reduce its transmit power or to request for resources prior to transmission based on the load indication.

摘要翻译： 描述了用于减轻无线通信系统中的干扰的技术。 在一方面，基站可以周期性地广播负载指示以传达诸如是否使用干扰减轻，使用哪种干扰减轻方案，应用干扰减轻的资源，干扰减轻的持续时间等信息的信息。终端可以接收 负载指示并执行负载指示所示的干扰减轻。 在一种设计中，终端可以从基站接收终端希望访问的负载指示。 终端可以基于负载指示来确定是否获得具有减少的干扰的预留资源。 在另一种设计中，终端可以从相邻基站接收负载指示。 终端可以基于负载指示来确定是否减少其发送功率或者在发送之前请求资源。