公开(公告)号：US5577168A

公开(公告)日：1996-11-19

申请号：US377291

申请日：1995-01-23

申请人： Zygmunt Haas ,  Chih-Lin I

发明人： Zygmunt Haas ,  Chih-Lin I

IPC分类号： H04L12/56 ,  H04W36/08 ,  H04Q7/22

CPC分类号： H04W36/0055 ,  H04W72/0406 ,  Y02B60/50

摘要： A packetized cellular system in which a mobile quasi-periodically transmits a beacon signal containing an ID number to a first base station in the cell in which it is located for storage with the ID's of other active mobiles in the cell. A copy of a list of the active mobiles in that cell is transmitted to all adjacent cells where they are placed on non-active list. Control of a mobile is handed-off to a second base station upon the receipt of a transmitted ID number of the mobile at the second base station. The mobile is then listed as active in the database of the second base station and non-active in the first base station.

摘要翻译： 一种分组化的蜂窝系统，其中移动设备准周期性地将包含ID号码的信标信号发送到其所在的小区中的第一基站，以与该小区中的其他主动移动台的ID一起存储。 在该单元中的活动移动台的列表的副本被发送到所有相邻的单元，它们被放置在非活动列表上。 在第二基站接收到所发送的移动台的ID号码时，将移动台的控制切换到第二基站。 移动台然后在第二基站的数据库中被列为活动的，并且在第一基站中是非活动的。

公开(公告)号：US5276730A

公开(公告)日：1994-01-04

申请号：US876554

申请日：1992-04-30

申请人： Leonard J. Cimini, Jr. ,  Gerard J. Foschini ,  Chih-Lin I

发明人： Leonard J. Cimini, Jr. ,  Gerard J. Foschini ,  Chih-Lin I

IPC分类号： H04W16/10 ,  H04M11/00 ,  H04Q7/00

CPC分类号： H04W16/10 ,  H04W24/00 ,  H04W72/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/082

摘要： A method of providing local autonomous control of channel allocation of a cellular telecommunications network. In one prior art method, which can be identified as the timid method, a channel is selected for use by an incoming user if it is not being used by any of the cells which surround it. Otherwise, another channel is selected according to the same rule. The channels are tested in random order and a call is blocked if all of the channels are in use. For heavy loading, because of the vagaries of the way the demand for channels occurs, this method can result in inefficient channel deployment. In another method, which can be identified as the aggressive method, a channel is selected for use by an incoming user even if that channel is currently being used in the surrounding cells. If the channel is in use, the incoming user "bumps" the current user off the channel in the timid mode. The "bumped" user is then forced to find and use another channel. With this method, an unreasonable number of reconfigurations and an unreasonable number of dropped calls can result, especially when the system is heavily loaded. This invention integrates the aggressive and timid methods to obtain the best of both: the former's improved performance and the latter's stability. Initially, the timid mode is used to look for a channel with acceptable interference. However, if the timid mode fails to obtain a channel, the call is not necessarily blocked. Instead, the mode of operation becomes more aggressive and the first channel tested that has only modest interference is taken. The "bumped" user on that channel then attempts to locate another channel. If the "bumped" user is unsuccessful, the incoming user must then retreat and is blocked.

摘要翻译： 一种提供蜂窝电信网络的信道分配的本地自主控制的方法。 在可以被识别为胆小的方法的一种现有技术方法中，如果入口用户没有被其周围的任何小区使用，则选择频道用于使用。 否则，根据相同的规则选择另一个频道。 频道按照随机顺序进行测试，如果所有频道都在使用中，通话将被阻止。 对于繁重的负荷，由于频道需求的变化，这种方式可能导致信道部署效率低下。 在可以被识别为侵略性方法的另一种方法中，选择频道以供入局用户使用，即使该频道当前正在周围小区中使用。 如果频道正在使用中，进入的用户将以当前用户的“嘀嗒”模式将“当前用户”从“通道”中消失。 然后，“碰撞”用户被迫找到并使用另一个频道。 使用这种方法，可能导致不合理的数量的重新配置和不合理的掉话数量，特别是当系统负载过重时。 本发明整合了积极和胆小的方法，以获得最佳的两者：前者的改进性能和后者的稳定性。 最初，胆小的模式用于寻找具有可接受干扰的信道。 但是，如果没有获得通道，则呼叫不一定被阻止。 相反，操作模式变得更加积极，并且仅采用适度干扰的第一通道测试。 该通道上的“碰撞”用户尝试找到另一个频道。 如果“碰撞”用户不成功，则进入的用户必须撤退并被阻止。

公开(公告)号：US08014981B2

公开(公告)日：2011-09-06

申请号：US12128729

申请日：2008-05-29

申请人： Peter Wing Chau Chan ,  Derek Chun Kit Lee ,  Roger Shu Kwan Cheng ,  Chih-Lin I

发明人： Peter Wing Chau Chan ,  Derek Chun Kit Lee ,  Roger Shu Kwan Cheng ,  Chih-Lin I

IPC分类号： G06F7/60 ,  G06F17/50

CPC分类号： H04L25/0242 ,  H04L25/0256

摘要： A method of modeling wireless communication channels in angular domain is disclosed. The method includes considering radiation patterns 101, 102 of the transmitter antenna and the receiver antenna, wherein the radiation patterns are represented by antenna characteristics sampled at a plurality of angular directions. A method of channel estimation based on the method of modeling wireless communication channel in angular domain is also disclosed.

摘要翻译： 公开了一种在角域中建模无线通信信道的方法。 该方法包括考虑发射机天线和接收机天线的辐射图案101,102，其中辐射图案由在多个角度方向上采样的天线特性表示。 还公开了一种基于角域中无线通信信道建模方法的信道估计方法。

公开(公告)号：US20090299715A1

公开(公告)日：2009-12-03

申请号：US12128729

申请日：2008-05-29

申请人： Peter Wing Chan ,  Derek Chun Lee ,  Roger Shu Cheng ,  Chih-Lin I

发明人： Peter Wing Chan ,  Derek Chun Lee ,  Roger Shu Cheng ,  Chih-Lin I

IPC分类号： G06G7/48

CPC分类号： H04L25/0242 ,  H04L25/0256

摘要： A method of modeling wireless communication channels in angular domain is disclosed. The method includes considering radiation patterns 101, 102 of the transmitter antenna and the receiver antenna, wherein the radiation patterns are represented by antenna characteristics sampled at a plurality of angular directions. A method of channel estimation based on the method of modeling wireless communication channel in angular domain is also disclosed.

摘要翻译： 公开了一种在角域中建模无线通信信道的方法。 该方法包括考虑发射机天线和接收机天线的辐射图案101,102，其中辐射图案由在多个角度方向上采样的天线特性表示。 还公开了一种基于角域中无线通信信道建模方法的信道估计方法。

公开(公告)号：US06580913B1

公开(公告)日：2003-06-17

申请号：US09690135

申请日：2000-10-16

申请人： Pi-Hui Chao ,  Chih-Lin I

发明人： Pi-Hui Chao ,  Chih-Lin I

IPC分类号： H04Q730

CPC分类号： H04W16/10 ,  H04W16/12 ,  H04W28/16 ,  H04W72/04 ,  H04W72/0413 ,  H04W72/0453 ,  H04W72/082 ,  H04W88/08 ,  H04W92/20

摘要： The present invention concerns the efficient use of the radio spectrum in wireless communications. Channel occupancy data and channel availability data concerning a specific base station and its neighbors are used to assign frequency channels to mobile units and/or base stations. The channel occupancy and availability data may be located at a base station or at a mobile switching center. Channels are preferably assigned as channel pairs.

摘要翻译： 本发明涉及无线电频谱在无线通信中的有效使用。 使用关于特定基站及其邻居的信道占用数据和信道可用性数据来向移动单元和/或基站分配频率信道。 信道占用和可用性数据可以位于基站或移动交换中心。 信道优选地被分配为信道对。

公开(公告)号：US5856971A

公开(公告)日：1999-01-05

申请号：US504481

申请日：1995-07-20

申请人： Richard Dennis Gitlin ,  Chih-Lin I

发明人： Richard Dennis Gitlin ,  Chih-Lin I

IPC分类号： H04B1/707 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/18 ,  H04J99/00 ,  H04L1/00 ,  H04L1/08

CPC分类号： H04L1/0041 ,  H04B7/264 ,  H04J13/0048 ,  H04J13/107 ,  H04J13/18 ,  H04L1/0022 ,  H04L1/08 ,  H04B2201/70705 ,  H04L1/0059 ,  H04L1/0071 ,  H04W52/26

摘要： A multi-code code division multiple access system allows a user at a radio transmitter unit to dynamically change its source data bit rate. In response to a user input selecting one of said plurality of source bit rates, an adjustable coding means in the transmitter spreads and transmits the user's digital bit stream received at the selected bit rate to a channel bit rate which at least equals the highest bit rate of said plurality of source bit rates. The plurality of source bit rates includes a basic bit rate R and at least one bit rate which is a multiple M of the basic bit rate R, where M is an integer of at least 1. The user's input selects a particular user source bit rate by identifying a basic bit rate multiple M to a base station that is to receive the transmission.

摘要翻译： 多码分码多址系统允许无线电发射机单元的用户动态地改变其源数据比特率。 响应于选择所述多个源比特率之一的用户输入，发射机中的可调节编码装置将以所选比特率接收的用户数字比特流扩展并发送至至少等于最高比特率的信道比特率 的所述多个源比特率。 多个源比特率包括基本比特率R和至少一个比特率，其是基本比特率R的多M，其中M是至少为1的整数。用户的输入选择特定用户源比特率 通过向要接收传输的基站识别基本位速率M M。

公开(公告)号：US5784360A

公开(公告)日：1998-07-21

申请号：US811092

申请日：1997-03-03

申请人： Chih-Lin I ,  Krishan Kumar Sabnani

发明人： Chih-Lin I ,  Krishan Kumar Sabnani

IPC分类号： H04B7/005 ,  H04B7/26 ,  H04J15/00 ,  H04W52/26 ,  H04W52/28 ,  H04B7/216

CPC分类号： H04W52/265 ,  H04W52/267 ,  H04W52/288

摘要： The invention relates to the use of CDMA techniques. Data signals to be transmitted from a plurality of wireless devices are spread across a common bandwidth. The data signals are received by a base station as a composite spread signal. The base station partially despreads the composite spread signal with unique codes to extract data signals from individual wireless devices. The data rate and quality of service requirements for each wireless device are used to calculate a power factor and a control signal is sent to control the power from a particular wireless device. In addition, a probability of transmission value is calculated based on an equivalent current load value and an equivalent population value. The probability of transmission value determines whether a particular wireless device is allowed access to an uplink frequency channel.

摘要翻译： 本发明涉及CDMA技术的应用。 要从多个无线设备发送的数据信号在公共带宽上扩展。 数据信号由基站作为复合扩展信号接收。 基站用独特的代码部分地解扩复合扩展信号，以从各个无线设备提取数据信号。 使用每个无线设备的数据速率和服务质量要求来计算功率因数，并且发送控制信号以控制来自特定无线设备的功率。 此外，基于等效电流负载值和等效总体值计算发送价值的概率。 传输值的概率确定特定的无线设备是否允许访问上行链路频道。

公开(公告)号：US07941302B2

公开(公告)日：2011-05-10

申请号：US12129896

申请日：2008-05-30

申请人： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

发明人： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

IPC分类号： G06F17/50 ,  H04L27/00

CPC分类号： H04B17/0087

摘要： Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

摘要翻译： 公开了用于信道模拟的方法和装置。 要求保护的发明提供了用于模拟传播信道，特别是多输入多输入（MIMO）信道的方法和装置1200。 所要求保护的发明还提供了一种通过增强的信道模拟来有效优化天线的方法和装置。 要求保护的发明将天线特性和信道特性作为输入，并输出时变信道实现，以在优化下生成作为天线优化目标的系统度量。 所要求的发明有利的是提供增强的信道模拟以满足天线评估的精度要求。

公开(公告)号：US20090299717A1

公开(公告)日：2009-12-03

申请号：US12129896

申请日：2008-05-30

申请人： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

发明人： Xueyuan Zhao ,  Chun Kit Lee ,  Zhengang Pan ,  Chih-Lin I ,  Kin Nang Lau ,  Roger Shu Kwan Cheng

IPC分类号： G06F17/50

CPC分类号： H04B17/0087

摘要： Method and apparatus for channel simulation is disclosed. The claimed invention provides method and apparatus 1200 to simulate a propagation channel, particularly a multiple-input-multiple-input (MIMO) channel. The claimed invention further provides a method and apparatus for efficient optimization of antenna by the enhanced channel simulation. The claimed invention takes both antenna characteristics and channel characteristics as inputs, and output time-varying channel realizations to generate the system metrics as the optimization target for antenna under optimization. The claimed invention advantageous provides enhanced channel simulation to meet the accuracy requirement of antenna evaluation.

摘要翻译： 公开了用于信道模拟的方法和装置。 要求保护的发明提供了用于模拟传播信道，特别是多输入多输入（MIMO）信道的方法和装置1200。 所要求保护的发明还提供了一种通过增强的信道模拟来有效优化天线的方法和装置。 要求保护的发明将天线特性和信道特性作为输入，并输出时变信道实现，以在优化下生成作为天线优化目标的系统度量。 所要求的发明有利的是提供增强的信道模拟以满足天线评估的精度要求。

公开(公告)号：US6108321A

公开(公告)日：2000-08-22

申请号：US811986

申请日：1997-03-05

申请人： Nefatiti Anderson ,  Simon C. Borst ,  Lynell E. Cannell ,  Terry Si-Fong Cheng ,  Lindsey Chew ,  Sudheer A. Grandhi ,  Chih-Lin I ,  Joseph Samuel Kaufman ,  Boris Dmitrievich Lubachevsky ,  Balakrishnan Narendran ,  Donna M. Sand

发明人： Nefatiti Anderson ,  Simon C. Borst ,  Lynell E. Cannell ,  Terry Si-Fong Cheng ,  Lindsey Chew ,  Sudheer A. Grandhi ,  Chih-Lin I ,  Joseph Samuel Kaufman ,  Boris Dmitrievich Lubachevsky ,  Balakrishnan Narendran ,  Donna M. Sand

IPC分类号： H04W16/04 ,  H04W16/10 ,  H04W72/04 ,  H04W72/06 ,  H04W72/08 ,  H04Q7/00

CPC分类号： H04W16/10 ,  H04W72/082 ,  H04W16/04

摘要： An interference based dynamic channel assignment scheme for a wireless communication network, for self configuring dynamic channel assignment of a plurality of channels, comprises the steps of: prioritizing a channel list and prioritizing a selected subset of the prioritized channel list. In further enhancements of the present invention, prioritizing a channel list is distributed on a per cell/sector basis so that prioritization is independent of frequency usage information from other cells/sectors and prioritization is based upon uplink and downlink characteristics.

摘要翻译： 用于无线通信网络的用于自配置多个信道的动态信道分配的基于干扰的动态信道分配方案包括以下步骤：优先化信道列表并对优先化的信道列表的选定子集进行优先级排序。 在本发明的进一步增强中，按照每个小区/扇区来分配信道列表的优先级，使得优先级独立于来自其它小区/扇区的频率使用信息，并且基于上行链路和下行链路特性进行优先级排序。