专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明申请

US20090286563A1 METHOD AND APPARATUS FOR USING VIRTUAL NOISE FIGURE IN A WIRELESS COMMUNICATION NETWORK 有权
标题翻译：在无线通信网络中使用虚拟噪声图的方法和装置
公开(公告)号：US20090286563A1
公开(公告)日：2009-11-19
申请号：US12463885
申请日：2009-05-11
申请人： Tingfang Ji , Naga Bhushan , Aamod D. Khandekar , Avneesh Agrawal
发明人： Tingfang Ji , Naga Bhushan , Aamod D. Khandekar , Avneesh Agrawal
IPC分类号： H04B15/00 , H04B7/00
CPC分类号： H04W48/20
摘要： Techniques for using virtual noise figure for various functions in a wireless communication network are described. A virtual noise figure is an indication of a virtual noise level at a receiver, which may be higher than an actual noise level at the receiver. In an aspect, virtual noise figure may be used for serving base station selection. A terminal may receive information indicative of a virtual noise figure for each of at least one base station. The terminal may select a serving base station based on the virtual noise figure for each base station. The terminal may send data to the serving base station at a rate selected based on an actual noise figure for the serving base station. In other aspects, virtual noise figure may be used for interference management and/or power control.
摘要翻译：描述了在无线通信网络中用于各种功能的虚拟噪声系数的技术。虚拟噪声系数是接收机处的虚拟噪声电平的指示，其可能高于接收机处的实际噪声电平。在一方面，虚拟噪声系数可用于服务基站选择。终端可以接收指示至少一个基站中的每一个的虚拟噪声系数的信息。终端可以基于每个基站的虚拟噪声系数来选择服务基站。终端可以以服务基站的实际噪声系数选择的速率向服务基站发送数据。在其他方面，虚拟噪声系数可用于干扰管理和/或功率控制。

22. 发明申请

US20090190500A1 SERVING CELL SELECTION IN WIRELESS COMMUNICATIONS 有权
标题翻译：在无线通信中服务小细胞选择
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。

23. 发明授权

US08693405B2 SDMA resource management 有权
标题翻译： SDMA资源管理
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。

24. 发明授权

US08638759B2 Serving cell selection in wireless communications 有权
标题翻译：在无线通信中服务小区选择
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。

25. 发明授权

US08526963B2 Restrictive reuse for a wireless communication system 有权
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.

26. 发明授权

US08521206B2 Interference management with reduce interference requests and interference indicators 失效
标题翻译：干扰管理与减少干扰请求和干扰指标
公开(公告)号：US08521206B2
公开(公告)日：2013-08-27
申请号：US12425302
申请日：2009-04-16
申请人： Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Alexei Y. Gorokhov , Naga Bhushan , Tingfang Ji
发明人： Mohammad J. Borran , Avneesh Agrawal , Aamod D. Khandekar , Alexei Y. Gorokhov , Naga Bhushan , Tingfang Ji
IPC分类号： H04B7/00
CPC分类号： H04W52/243 , H04W72/08
摘要： Techniques for managing interference in a wireless network are described. In an aspect, reduce interference requests and interference indicators may be used for interference management to enable operation in scenarios with dominant interferers. In one design, a terminal may receive a reduce interference request from a first base station requesting lower interference on specified time-frequency resources. The terminal may also receive an interference indicator conveying the interference observed by a second base station. The terminal may determine its transmit power based on the reduce interference request and the interference indicator. For example, the terminal may determine an initial transmit power based on the reduce interference request (or the interference indicator) and may adjust the initial transmit power based on the interference indicator (or the reduce interference request) to obtain its transmit power. The terminal may transmit data to a serving base station at the determined transmit power.
摘要翻译：描述了用于管理无线网络中的干扰的技术。在一个方面，减少干扰请求和干扰指示符可以用于干扰管理，以使得能够在具有主要干扰源的情况下进行操作。在一种设计中，终端可以从指定的时间 - 频率资源请求较低干扰的第一基站接收减少干扰请求。终端还可以接收传达由第二基站观测到的干扰的干扰指示符。终端可以基于减少干扰请求和干扰指示符来确定其发射功率。例如，终端可以基于减少干扰请求（或干扰指示符）来确定初始发射功率，并且可以基于干扰指示符（或减少干扰请求）来调整初始发射功率以获得其发射功率。终端可以以所确定的发射功率向服务基站发送数据。

27. 发明授权

US08483168B2 Serving base station selection in a wireless communication network 有权
标题翻译：在无线通信网络中提供基站选择
公开(公告)号：US08483168B2
公开(公告)日：2013-07-09
申请号：US13556094
申请日：2012-07-23
申请人： Tingfang Ji , Aamod Dinkar Khandekar , Naga Bhushan , Alexei Yurievitch Gorokhov , Avneesh Agrawal
发明人： Tingfang Ji , Aamod Dinkar Khandekar , Naga Bhushan , Alexei Yurievitch Gorokhov , Avneesh Agrawal
IPC分类号： H04W4/00 , H04B7/185
CPC分类号： H04W36/0083 , Y02D70/00 , Y02D70/1222 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146
摘要： Techniques for selecting a serving base station for a terminal in a wireless communication network are described. In one design, multiple candidate base stations for the terminal may be identified, with each candidate base station being a candidate for selection as the serving base station for the terminal. The multiple candidate base stations may include base stations with different transmit power levels and/or may support interference mitigation. One of the multiple candidate base stations may be selected as the serving base station. In one design, the serving base station may be selected based on at least one metric for each candidate base station. The at least one metrics may be for pathloss, effective transmit power, effective geometry, projected data rate, control channel reliability, network utility, etc. The selected candidate base station may have a lower SINR than a highest SINR among the multiple candidate base stations.
摘要翻译：描述了用于在无线通信网络中为终端选择服务基站的技术。在一种设计中，可以识别用于终端的多个候选基站，其中每个候选基站是用于选择的候选作为终端的服务基站。多个候选基站可以包括具有不同发射功率电平的基站和/或可以支持干扰减轻。可以选择多个候选基站中的一个作为服务基站。在一种设计中，可以基于每个候选基站的至少一个度量来选择服务基站。所述至少一个度量可以用于路径损耗，有效发射功率，有效几何，投影数据速率，控制信道可靠性，网络效用等。所选择的候选基站可以具有比多个候选基站中的最高SINR更低的SINR 。

28. 发明授权

US08219030B2 Adaptive distributed frequency planning 有权
标题翻译：自适应分布式频率规划
公开(公告)号：US08219030B2
公开(公告)日：2012-07-10
申请号：US12142480
申请日：2008-06-19
申请人： Alexei Gorokhov , Avneesh Agrawal , Naga Bhushan , Tingfang Ji
发明人： Alexei Gorokhov , Avneesh Agrawal , Naga Bhushan , Tingfang Ji
IPC分类号： H04B17/00
CPC分类号： H04W16/04 , H04L1/0026
摘要： Systems and methodologies are described that facilitate employing distributed frequency planning and reuse factor optimization based upon forward link and/or reverse link interference management techniques. An optimal reuse factor for a base station can be determined based upon a metric that evaluates levels of service associated with neighboring base stations. Moreover, a subset of available resource sets can be selected for use by the base station; thus, a base station specific collection of resource sets can be formed through such selection. Further, mappings of each resource set to a set of physical resources can be disseminated in a network or portion thereof. According to another example, frequency hopping can be constrained to use of resources within a resource set (rather than across more than one resource set) as provided in a base station specific hopping pattern.
摘要翻译：描述了有助于采用基于前向链路和/或反向链路干扰管理技术的分布式频率规划和重用因子优化的系统和方法。可以基于评估与相邻基站相关联的服务等级的度量来确定基站的最佳重用因子。此外，可以选择可用资源集的子集供基站使用; 因此，可以通过这样的选择来形成基站特定资源集合。此外，每个资源集合对一组物理资源的映射可以在网络或其一部分中传播。根据另一示例，跳频可以被限制为使用资源集合（而不是跨越多于一个资源集合）的资源，如在基站特定跳频模式中所提供的。

29. 发明授权

US07966033B2 Serving sector directed power control 有权
标题翻译：服务行业定向电力控制
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。

30. 发明申请

US20090227263A1 METHOD AND APPARATUS FOR USING LOAD INDICATION FOR INTEREFERENCE MITIGATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：在无线通信系统中使用负载指示进行干扰减轻的方法和装置
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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式