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公开(公告)号：US06950670B2
公开(公告)日：2005-09-27
申请号：US10001650
申请日：2001-10-31
CPC分类号： H04W28/22 , H04W52/0229 , Y02D70/122
摘要： A wireless network includes transmission power and data rate adaptation based upon signal quality experienced by the user.
摘要翻译： 无线网络包括基于用户所经历的信号质量的发射功率和数据速率适配。
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公开(公告)号：US06501785B1
公开(公告)日：2002-12-31
申请号：US09472784
申请日：1999-12-28
申请人： Li Fung Chang , Kapil K. Chawla , Justin C. Chuang , Zoran Kostic , Nelson Sollenberger , Xiaoxin Qiu
发明人： Li Fung Chang , Kapil K. Chawla , Justin C. Chuang , Zoran Kostic , Nelson Sollenberger , Xiaoxin Qiu
IPC分类号： H04J1306
CPC分类号： H04W16/10 , H04B7/2621
摘要： This invention provides a dynamic frequency hopping system that utilizes information from multiple base stations. The system assigns frequency hopping patterns based on current interference and traffic environments to avoid interference thus gaining the benefits of interference averaging and interference avoidance. The system imposes less stringent measurement requirements on terminals (wireless mobile devices) because many measurement requirements are replaced by generating estimates based on measurement data received from other base stations within a base station neighborhood. The system may continuously verify that the frequency hopping patterns assigned to the links of the system optimizes system performance. The system compares system performance of possible frequency hopping patterns against currently assigned frequency hopping pattern to optimize system performance. When a request for a link is received, a similar process as above is performed where the request is granted/denied/delayed based on system optimization requirements. In this way, the frequency hopping patterns of the links of the system may be assigned so that an optimum system performance may be obtained.
摘要翻译： 本发明提供了利用来自多个基站的信息的动态跳频系统。 该系统基于当前的干扰和业务环境分配跳频模式，以避免干扰，从而获得干扰平均和干扰避免的好处。 该系统对终端（无线移动设备）施加较不严格的测量要求，因为通过基于从基站附近的其他基站接收的测量数据生成估计来代替许多测量要求。 系统可以连续验证分配给系统的链路的跳频模式优化系统性能。 该系统将可能的跳频模式的系统性能与当前分配的跳频模式进行比较，以优化系统性能。 当接收到链接的请求时，执行与根据系统优化要求授予/拒绝/延迟请求的类似的过程。 以这种方式，可以分配系统的链路的跳频模式，使得可以获得最佳的系统性能。
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公开(公告)号：US07933251B1
公开(公告)日：2011-04-26
申请号：US11899722
申请日：2007-09-06
IPC分类号： H04B7/216
CPC分类号： H04W28/22 , H04W52/0229 , Y02D70/122
摘要： A wireless network includes transmission power and data rate adaptation based upon quality experienced by the user.
摘要翻译： 无线网络包括基于用户所经历的质量的传输功率和数据速率适配。
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公开(公告)号：US06459901B1
公开(公告)日：2002-10-01
申请号：US09453566
申请日：1999-12-03
IPC分类号： H04Q720
摘要： This invention provides wireless resource allocation techniques where the wireless network resource allocation is based on maximum system gain. System gain may be the difference between a maximum performance (e.g., throughput rate) for a requested link and a performance loss of all currently active links affected by the requested link. A currently active link is affected if the requested link is within its link neighborhood. Wireless network resources are allocated to optimize system performance. Inter-base communication may be used to facilitate information exchange among base stations to optimize system performance. The performance loss experienced by any currently active link is called damage to that link. Damage may be determined in a pair-wise fashion based on a nominal performance which may be defined as the performance of a link if interference is experienced only from links which are outside the link neighborhood of the link or as a system parameter. The damage is the difference between the nominal performance and the performance for the link if experiencing interference only from the requested link. Determining damage is computationally efficient because it only requires consideration of the nominal performance and the performance of the requested link. Link neighborhoods limit inter-base station communications and reduces base station interconnect costs.
摘要翻译： 本发明提供无线资源分配技术，其中无线网络资源分配基于最大系统增益。 系统增益可以是所请求的链路的最大性能（例如，吞吐率）与受所请求的链路影响的所有当前活动链路的性能损失之间的差异。 如果所请求的链接在其链接邻域内，则当前活动的链接将受到影响。 分配无线网络资源以优化系统性能。 基站间通信可用于促进基站之间的信息交换，以优化系统性能。 任何当前活动链接遭遇的性能损失都称为对该链路的损坏。 可以基于标称性能来确定损害，该标称性能可以被定义为如果干扰仅仅是来自在链路的链路附近的链路或作为系统参数的链路经历的链路的性能。 如果仅通过请求的链路仅受到干扰，则损坏是标称性能与链路性能之间的差异。 确定损害在计算上是有效的，因为它只需要考虑所要求链路的标称性能和性能。 链路邻域限制基站间通信，降低基站互连成本。
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15.发明授权Method and apparatus for interference avoidance in a wireless communication system 失效无线通信系统中的干扰避免的方法和装置公开(公告)号：US06243371B1
公开(公告)日：2001-06-05
申请号：US08991571
申请日：1997-12-16
申请人： Kapil K. Chawla , Xiaoxin Qiu
发明人： Kapil K. Chawla , Xiaoxin Qiu
IPC分类号： H04B7212
摘要： A method and apparatus for managing interference in a wireless communications system. Each base generates a predictable beam-off sequence, and terminals measure the received signal over time. This received signal is then used to estimate or measure performance to schedule transmissions to the terminal.
摘要翻译： 一种用于管理无线通信系统中的干扰的方法和装置。 每个基地产生可预测的波束截止序列，并且终端随时间测量接收的信号。 然后，该接收的信号用于估计或测量性能以调度对终端的传输。
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16.发明授权Method and apparatus for resource assignment in a wireless communication system 失效无线通信系统中资源分配的方法和装置
公开(公告)号：US6137787A
公开(公告)日：2000-10-24
申请号：US832546
申请日：1997-04-03
申请人： Kapil K. Chawla , Xiaoxin Qiu
发明人： Kapil K. Chawla , Xiaoxin Qiu
CPC分类号： H04W16/12 , H04W16/02 , H04B7/2656 , H04W72/0446 , H04W72/048 , H04W72/085 , H04W74/02
摘要： A method and apparatus for assigning communication resources for at least one communication site in a time division communication system having multiple reuse patterns in the time domain. A first plurality of communication sites communicate using a first portion of a time frame corresponding to a first reuse pattern. A second plurality of communication sites communicate using a second portion of said time frame corresponding to a second reuse pattern.
摘要翻译： 一种用于在具有时域中的多个重用模式的时分通信系统中为至少一个通信站点分配通信资源的方法和装置。 第一多个通信站点使用与第一重用模式对应的时间帧的第一部分进行通信。 第二多个通信站点使用对应于第二重用模式的所述时间帧的第二部分进行通信。
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公开(公告)号：US07280514B1
公开(公告)日：2007-10-09
申请号：US11203386
申请日：2005-08-12
IPC分类号： H04B7/216
CPC分类号： H04W28/22 , H04W52/0229 , Y02D70/122
摘要： A wireless network includes transmission power and data rate adaptation based upon signal quality experienced by the user.
摘要翻译： 无线网络包括基于用户所经历的信号质量的发射功率和数据速率适配。
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公开(公告)号：US06954465B2
公开(公告)日：2005-10-11
申请号：US09791200
申请日：2001-02-22
CPC分类号： H04W72/082
摘要： This invention provides interference predictions, suitable for least interference dynamic channel assignment use or other frequency hopping uses by de-coupling the time slot assignment and the frequency hopping pattern assignment. In particular, a least interfered time slot is selected based on an aggregate interference measurement performed across an entire transmission band or a pre-specified range of frequencies in the transmission band. A user is assigned a least interfered time slot and provided an appropriate frequency hopping pattern.
摘要翻译： 本发明提供适合于通过解耦合时隙分配和跳频图案分配的最小干扰动态信道分配使用或其他跳频使用的干扰预测。 特别地，基于在整个传输频带或传输频带中的预定频率范围内执行的聚合干扰测量来选择最少干扰的时隙。 给用户分配最少的干扰时隙并提供适当的跳频模式。
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公开(公告)号：US5878328A
公开(公告)日：1999-03-02
申请号：US575974
申请日：1995-12-21
申请人： Kapil K. Chawla , Michael Jeffrey Dunn , Masud Kibria , Michael Allen Raffel , Reinaldo A. Valenzuela
发明人： Kapil K. Chawla , Michael Jeffrey Dunn , Masud Kibria , Michael Allen Raffel , Reinaldo A. Valenzuela
摘要： A level of system self-organization in a wireless communication system is provided using a combined design, planning and verification process to determine system organization parameters. The process determines the parameters based on a measured path loss-related characteristic, such as path loss or bit error rate, between base stations and a plurality of regions in a coverage area. For each region, the characteristic is measured to each base station irrespective of the proximity between the region and the base stations. The measured characteristics enable the prediction of signal strength received at the regions of signals transmitted by the base stations independent of the region location. Accordingly, the characteristics can be measured without information correlating the absolute geographic locations of the regions. The resulting unique characterization of the path loss-related information can be used to determine a variety of system organization parameters, such as the number and transmission power of base stations, neighbor lists, sets of base stations that can reuse channels and the identity of base stations, if any, that can be omitted from the system.
摘要翻译： 通过组合的设计，规划和验证过程提供无线通信系统中的系统自组织级别，以确定系统组织参数。 该过程基于在基站和覆盖区域中的多个区域之间的测量的路径损耗相关特性（例如路径损耗或比特错误率）来确定参数。 对于每个区域，不管区域和基站之间的距离如何，都对每个基站测量特性。 测量的特性使得能够预测在基站发送的信号的区域处接收的信号强度，而与区域位置无关。 因此，可以在没有与区域的绝对地理位置相关的信息的情况下测量特征。 所得到的路径损耗相关信息的独特特征可用于确定各种系统组织参数，例如基站的数量和发射功率，邻居列表，可以重用信道的基站集合和基站的身份 可以从系统中省略的站（如果有的话）。
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20.发明授权Method for determining organization parameters in a wireless communication system 失效用于确定无线通信系统中的组织参数的方法公开(公告)号：US06496700B1
公开(公告)日：2002-12-17
申请号：US08628214
申请日：1996-04-04
IPC分类号： H04B1700
CPC分类号： H04W16/18 , H04B17/318 , H04B17/391 , H04W24/02 , H04W52/223 , H04W52/242
摘要： A level of automated adjustment of system organization parameters in a wireless communication system is provided by determining the parameter settings using a characterization of signal propagation of the system's coverage area. This characterization is based on measurements of path loss-related characteristics by the system's base stations and wireless terminals operating throughout the coverage area. An exemplary path loss-related characteristic is path loss as determined by measuring received signal strength (RSS) at wireless terminals based on signals transmitted at known powers by a plurality of the system's base stations. It is possible for the wireless terminals to take measurements while operating in the coverage area, whether idle or during communication with the system, and for such terminals to be associated with the system's subscribers. A resulting characterization of signal propagation in the coverage area based on the measured path loss-related characteristic can then be used to determine a variety of parameter settings including base station transmission power settings, wireless terminal access parameters, neighbor lists, sets of base stations that can reuse channels and base station transmission power settings when base stations are added to or removed from the system.
摘要翻译： 通过使用系统覆盖区域的信号传播的表征来确定参数设置来提供无线通信系统中的系统组织参数的自动调整级别。 该表征基于系统的基站和在整个覆盖区域内运行的无线终端的路径损耗相关特性的测量。 示例性路径损耗相关特性是通过基于由多个系统的基站以已知功率发送的信号测量无线终端处的接收信号强度（RSS）所确定的路径损耗。 无线终端可以在覆盖区域中进行测量，无论是空闲还是与系统通信，并且这样的终端与系统的用户相关联。 然后可以使用基于所测量的路径损耗相关特性的覆盖区域中的信号传播的结果表征来确定各种参数设置，包括基站传输功率设置，无线终端接入参数，邻居列表，基站集合 当基站被添加到系统或从系统中移除时，可以重用信道和基站传输功率设置。
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