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：US07966033B2

公开(公告)日：2011-06-21

申请号：US11620033

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： H04B7/00

CPC分类号： H04W52/247 ,  H04W52/146 ,  H04W52/241 ,  H04W52/243 ,  H04W52/246 ,  H04W52/36 ,  H04W52/54

摘要： Systems and methodologies are described that facilitate serving sector directed transmit power control in a wireless communication environment. Under certain conditions, an access point can have better data with which to determine appropriate power levels than an individual terminal. Accordingly, an access point can transmit power control information to one or more terminals supported by the access point overriding normal power determination procedures. In particular, power control information can be included within an assignment message that designates resources (e.g., frequency, time) assigned to a terminal. Power control information can be based upon SNR, quality of service requirements, interference information, any other relevant information or any combination thereof.

摘要翻译： 描述了在无线通信环境中促进服务于扇区定向发射功率控制的系统和方法。 在某些条件下，接入点可以具有比单个终端确定适当功率级别的更好的数据。 因此，接入点可以将功率控制信息发送到由接入点支持的一个或多个终端覆盖正常功率确定过程。 特别地，功率控制信息可以被包括在指定分配给终端的资源（例如，频率，时间）的分配消息内。 功率控制信息可以基于SNR，服务质量要求，干扰信息，任何其他相关信息或其任何组合。

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。

公开(公告)号：US20080253319A1

公开(公告)日：2008-10-16

申请号：US12141557

申请日：2008-06-18

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

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

IPC分类号： H04Q7/00

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：US20070197254A1

公开(公告)日：2007-08-23

申请号：US11620033

申请日：2007-01-04

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

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

IPC分类号： H04B7/00 ,  H04Q7/20

CPC分类号： H04W52/247 ,  H04W52/146 ,  H04W52/241 ,  H04W52/243 ,  H04W52/246 ,  H04W52/36 ,  H04W52/54

摘要： Systems and methodologies are described that facilitate serving sector directed transmit power control in a wireless communication environment. Under certain conditions, an access point can have better data with which to determine appropriate power levels than an individual terminal. Accordingly, an access point can transmit power control information to one or more terminals supported by the access point overriding normal power determination procedures. In particular, power control information can be included within an assignment message that designates resources (e.g., frequency, time) assigned to a terminal. Power control information can be based upon SNR, quality of service requirements, interference information, any other relevant information or any combination thereof.

摘要翻译： 描述了在无线通信环境中促进服务于扇区定向发射功率控制的系统和方法。 在某些条件下，接入点可以具有比单个终端确定适当功率级别的更好的数据。 因此，接入点可以将功率控制信息发送到由接入点支持的一个或多个终端覆盖正常功率确定过程。 特别地，功率控制信息可以被包括在指定分配给终端的资源（例如，频率，时间）的分配消息内。 功率控制信息可以基于SNR，服务质量要求，干扰信息，任何其他相关信息或其任何组合。