公开(公告)号：US06233455B1

公开(公告)日：2001-05-15

申请号：US09304144

申请日：1999-05-03

申请人： Deepa Ramakrishna ,  Ahmad Jalali ,  Ashvin Chheda

发明人： Deepa Ramakrishna ,  Ahmad Jalali ,  Ashvin Chheda

IPC分类号： H04Q720

CPC分类号： H04W36/18

摘要： A pre-determined negative constant is utilized in soft handoff mode to permit a new pilot signal to be added to an wireless phone's active set. The negative constant is combined with the weakest pilot signal in the active set and then compared to the new pilot signal strength which allows the new pilot to trigger a Pilot Strength Measurement Message (PSMM) even when the new pilot signal is weaker than all active set pilot signals. The negative constant provides a soft handoff while maintaining or reducing drop rate probabilities and frame error rates. After initially triggering a PSMM, the next instance the new pilot may ordinarily cause a PSMM to be triggered is when the new pilot signal exceeds the strongest active set pilot signal. Triggering a PSMM when exceeding the strongest active set signal may increase the probability of dropped signals. To reduce the probability of dropped signals, a negative constant is utilized during soft handoff to add a new pilot to an active set. This step would also decrease the probability that the new pilot will overpower a weaker active set pilot signal.

摘要翻译： 在软切换模式中使用预定的负常数以允许将新的导频信号添加到无线电话的活动集。 负的常数与有源集中的最弱的导频信号相组合，然后与新的导频信号强度进行比较，即使新的导频信号弱于所有的有效集合，允许新导频触发导频强度测量消息（PSMM） 导频信号。 负常数提供软切换，同时保持或降低丢弃率概率和帧错误率。 在最初触发PSMM之后，新的导频通常可以引起PSMM被触发的下一个例子是当新的导频信号超过最强的有效集导频信号时。 超过最强有效设定信号时触发PSMM可能会增加掉线信号的概率。 为了降低丢弃信号的概率，在软切换期间利用负常数将新的导频添加到活动集。 这一步骤也将降低新的飞行员将会超过较弱的主动集合导频信号的可能性。

公开(公告)号：US6160999A

公开(公告)日：2000-12-12

申请号：US937305

申请日：1997-08-18

申请人： Ashvin H. Chheda ,  Ahmad Jalali

发明人： Ashvin H. Chheda ,  Ahmad Jalali

IPC分类号： H04B7/005 ,  H04W36/18 ,  H04W52/40 ,  H04B1/00

CPC分类号： H04W52/40 ,  H04W36/18

摘要： A wireless communication system facilitates wireless communication with a mobile unit operating within a respective service area. The wireless communication system includes a mobile switching center and a plurality of base stations with each base stations coupled to the mobile switching center and providing wireless coverage within a respective portion of the service area. The mobile unit wirelessly connects to at least two of the base stations (or sectors of the base stations) that transmit to the mobile unit via respective forward links at respective transmit levels. These respective transmit levels are based upon forward link requirements of the mobile unit. The mobile unit transmits to the at least two base stations/sectors via a respective plurality of reverse links. Forward link transmit levels may be determined based upon the quality of corresponding reverse link transmissions or from the quality of pilot signals or forward link transmissions received by the mobile unit. Forward link transmissions are made via the most favorable forward links (at least one) while transmissions are not made, or are made at reduced power levels on the least favorable forward links. During management of the wireless communication system, forward link transmissions are initiated and discontinued based upon the forward link transmission power requirements of the mobile unit. While managing the forward link transmissions, the forward link transmission power requirements of the mobile unit may be compared to a plurality of thresholds. When these thresholds are exceeded, the management requires altering which base stations make forward link transmissions and at what levels such transmissions are made. In a particular embodiment of the wireless communication system, the system operates according to a code division multiple access protocol.

摘要翻译： 无线通信系统促进与在相应服务区域内操作的移动单元的无线通信。 无线通信系统包括移动交换中心和多个基站，每个基站耦合到移动交换中心，并在服务区域的相应部分内提供无线覆盖。 移动单元通过相应的发送电平的各自的前向链路与至少两个基站（或基站的扇区）无线地连接。 这些各自的传输级别基于移动单元的前向链路要求。 移动单元经由相应的多个反向链路向至少两个基站/扇区发送。 可以基于对应的反向链路传输的质量或由移动单元接收的导频信号或前向链路传输的质量来确定前向链路传输级别。 通过最不利的前向链路（至少一个）进行前向链路传输，而不进行传输，或者在最不利的前向链路上以较低的功率级别进行传输。 在无线通信系统的管理期间，基于移动单元的前向链路发送功率需求，发起和中断前向链路传输。 在管理前向链路传输时，可以将移动单元的前向链路传输功率要求与多个阈值进行比较。 当超过这些阈值时，管理需要改变哪些基站进行前向链路传输，并且在什么级别进行这样的传输。 在无线通信系统的特定实施例中，系统根据码分多址协议进行操作。

公开(公告)号：US6075815A

公开(公告)日：2000-06-13

申请号：US931991

申请日：1997-09-17

申请人： Ashvin Chheda ,  Michael S. Feeney ,  Ahmad Jalali

发明人： Ashvin Chheda ,  Michael S. Feeney ,  Ahmad Jalali

IPC分类号： H04B7/005 ,  H04B17/00

CPC分类号： H04W52/24 ,  H04W52/12 ,  H04W52/20 ,  H04W52/225 ,  H04W52/40

摘要： The process determines the I channel and Q channel components for each received soft value. The location of each soft value with respect to the fade line is determined using the I and Q channel components. These locations are averaged over a power control group duration to determine the noise density. The symbol energy is determined by subtracting the average perpendicular distance from the soft value point to the fade line from half the square of the average of the distance from the soft value point to the origin.

摘要翻译： 该过程确定每个接收的软值的I通道和Q通道组件。 使用I和Q通道分量来确定每个软值相对于淡入淡出线的位置。 这些位置在功率控制组持续时间内被平均以确定噪声密度。 通过从软值点到从原始值的距离的平均值的平方的平方的一半减去从软值点到褪色线的平均垂直距离来确定符号能量。

公开(公告)号：US6073025A

公开(公告)日：2000-06-06

申请号：US932253

申请日：1997-09-17

申请人： Ashvin Chheda ,  Michael S. Feeney ,  Ahmad Jalali

发明人： Ashvin Chheda ,  Michael S. Feeney ,  Ahmad Jalali

IPC分类号： H04B7/005 ,  H04B1/06 ,  G01F3/02 ,  H04Q7/00

CPC分类号： H04W52/283 ,  H04W52/282 ,  H04W52/40 ,  H04W52/08

摘要： The base station controller monitors the reverse link frame error rate of all the base stations involved in a soft hand-off with a radiotelephone. The average reverse link frame error rates of these base stations are then computed and the lowest of the average error rates is found. The last known transmit power of the base station having the lowest average error rate is determined. The transmit power of those base stations having a higher average reverse link frame error rate than the best base station are adjusted to the last known transmit power of the best base station.

摘要翻译： 基站控制器用无线电话机监视与软切换有关的所有基站的反向链路帧错误率。 然后计算这些基站的平均反向链路帧错误率，并且找到平均错误率的最低值。 确定具有最低平均误码率的基站的最后已知发射功率。 具有比最佳基站更高的平均反向链路帧错误率的那些基站的发射功率被调整到最佳基站的最后已知的发射功率。

公开(公告)号：US6038448A

公开(公告)日：2000-03-14

申请号：US899105

申请日：1997-07-23

申请人： Ashvin H. Chheda ,  Ahmad Jalali

发明人： Ashvin H. Chheda ,  Ahmad Jalali

IPC分类号： H04W16/24 ,  H04W36/30 ,  H04B7/20

CPC分类号： H04W36/30 ,  H04W16/24

摘要： A wireless communication system facilitates wireless communication with a mobile unit within a respective service area. The wireless communication system includes a mobile switching center and a plurality of base stations. Each base station couples to the mobile switching center and provides wireless communication within a respective cell or within a plurality of respective sectors. Each base station provides a pilot signal that may be received by the wireless mobile unit. With multiple sectors, a pilot signal is provided for each sector. The mobile unit may wirelessly connect to any of the base stations' cells and sectors. A determination of whether to be connected to a particular base station cell and/or base station sector is based upon the relative strengths of pilot signals received by the wireless mobile unit. The mobile unit may evaluate the relative strengths of received pilot signals and simply request a connection to a base station or a disconnection therefrom based upon the evaluation. However, the mobile unit may also notify the mobile switching center of strengths of received pilot signals with the mobile switching center taking action. In such case, the mobile switching center may determine thresholds and pass the thresholds to the mobile unit for later use, the thresholds based upon the relative strengths of the pilot signals. A corresponding method includes steps for operating a wireless communication system.

摘要翻译： 无线通信系统促进与相应服务区域内的移动单元的无线通信。 无线通信系统包括移动交换中心和多个基站。 每个基站耦合到移动交换中心，并在相应小区内或多个相应扇区内提供无线通信。 每个基站提供可由无线移动单元接收的导频信号。 对于多个扇区，为每个扇区提供导频信号。 移动单元可以无线地连接到任何基站的小区和扇区。 是否连接到特定基站小区和/或基站扇区的确定是基于由无线移动单元接收的导频信号的相对强度。 移动单元可以评估所接收的导频信号的相对强度，并且基于该评估简单地请求到基站的连接或其断开连接。 然而，移动单元还可以通过移动交换中心采取行动来通知移动交换中心接收到的导频信号的强度。 在这种情况下，移动交换中心可以确定阈值并将阈值传递给移动单元供以后使用，该阈值基于导频信号的相对强度。 相应的方法包括用于操作无线通信系统的步骤。

公开(公告)号：US5930714A

公开(公告)日：1999-07-27

申请号：US736625

申请日：1996-10-24

申请人： Marwan Abu-Amara ,  Steve Sides ,  Ahmad Jalali ,  Jyoti Boppana ,  Satyajit Doctor

发明人： Marwan Abu-Amara ,  Steve Sides ,  Ahmad Jalali ,  Jyoti Boppana ,  Satyajit Doctor

IPC分类号： H04W36/12 ,  H04W36/18 ,  H04Q7/38 ,  H04B7/216

CPC分类号： H04W36/12 ,  H04W36/18

摘要： The present invention facilitates an inter-mobile switching center (MSC) soft hand-off by creating a communication link between the MSCs through the base station controllers (BSCs). The routers in the BSCs are linked to form a virtual router. This faster link between the BSCs enables the same protocol to be used for intra-MSC soft hand-off used for inter-MSC soft hand-off.

摘要翻译： 本发明通过在MSC之间通过基站控制器（BSC）建立通信链路来促进移动间交换中心（MSC）软切换。 BSC中的路由器链接形成虚拟路由器。 BSC之间的这种更快的链路使得能够使用相同的协议来进行用于MSC间切换的MSC间切换。

公开(公告)号：US10833824B2

公开(公告)日：2020-11-10

申请号：US16148955

申请日：2018-10-01

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04L5/00 ,  H04B17/318 ,  H04W84/18 ,  H04W88/04 ,  H04W88/08

摘要： Systems and methods are described for a mesh network of Access Points (APs) and Customer Premises Equipment (CPE) to provide broadband access to premises such as houses or enterprises. Systems and method are described to enable self-configurable CPEs in the sense that the CPEs autonomously find and establish communications with the AP/CPEs from which they receive the strongest signal. Systems and methods are described to enable a self-healing network in the sense that the CPEs autonomously detect low received signal strength or lost connection, and find and establish communications with the AP/CPE from which they receive the strongest signal.

公开(公告)号：US20200106582A1

公开(公告)日：2020-04-02

申请号：US16148955

申请日：2018-10-01

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04L5/00 ,  H04B17/318

摘要： Systems and methods are described for a mesh network of Access Points (APs) and Customer Premises Equipment (CPE) to provide broadband access to premises such as houses or enterprises. Systems and method are described to enable self-configurable CPEs in the sense that the CPEs autonomously find and establish communications with the AP/CPEs from which they receive the strongest signal. Systems and methods are described to enable a self-healing network in the sense that the CPEs autonomously detect low received signal strength or lost connection, and find and establish communications with the AP/CPE from which they receive the strongest signal.

公开(公告)号：US09806794B2

公开(公告)日：2017-10-31

申请号：US14337149

申请日：2014-07-21

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04B7/185 ,  H04W40/22 ,  H04W84/06 ,  H04W28/02 ,  H04B7/10 ,  H04W36/08

CPC分类号： H04B7/18506 ,  H04B7/10 ,  H04W28/0226 ,  H04W28/0231 ,  H04W36/08 ,  H04W40/22 ,  H04W84/06

摘要： A system for broadband access to airborne platforms is described. The system includes: a ground station with a number of antenna panels, each antenna panel having two polarizations; the ground station having multiple modems connected to the different antenna panels and a processor controlling the modems; and the aircraft equipment comprising of a modem attached to an antenna with two polarizations.

公开(公告)号：US20150236781A1

公开(公告)日：2015-08-20

申请号：US14624320

申请日：2015-02-17

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04B7/185 ,  H04W36/30 ,  H04W24/02

CPC分类号： H04B7/18504 ,  B64C39/024 ,  B64C2201/122 ,  H04B7/1555 ,  H04B7/18506 ,  H04B7/18528 ,  H04B7/18539 ,  H04B7/18541 ,  H04B7/18543 ,  H04B7/18554 ,  H04B7/18578 ,  H04W24/02 ,  H04W36/0005 ,  H04W36/0016 ,  H04W36/0083 ,  H04W36/12 ,  H04W36/30 ,  H04W36/36 ,  H04W48/16 ,  H04W84/005 ,  H04W84/06 ,  H04W88/16 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/164 ,  Y02D70/446

摘要： A communication system is described. The system includes: at least one gateway able to provide broadband connectivity, a set of ground terminals, and a set of high altitude platforms (HAPs), where at least one aerial platform is able to communicate with at least one gateway using radio frequencies, each HAP is able to communicate with ground terminals using radio frequencies, and each HAP is able to communicate with each other HAP using radio frequencies. Ways to handoff a ground terminal/gateway from one HAP beam to another HAP beam are described. Ways to handoff a ground terminal/gateway from one HAP to another HAP are described. Ways that keep the communications payload radios active when there is data traffic and put the radios in sleep mode otherwise, thereby adjusting the communications payload power consumption to the data traffic requirements as a function of time and coverage area, are described.

摘要翻译： 描述通信系统。 该系统包括：能够提供宽带连接的至少一个网关，一组接地终端和一组高空平台（HAP），其中至少一个空中平台能够使用无线电频率与至少一个网关通信， 每个HAP能够使用无线电频率与接地终端通信，并且每个HAP能够使用无线电频率彼此进行HAP通信。 描述了将接地终端/网关从一个HAP波束切换到另一HAP波束的方法。 描述了将接地终端/网关从一个HAP切换到另一个HAP的方法。 描述了当存在数据业务时保持通信有效载荷无线电活动的方式，并且将无线电设置为睡眠模式，否则将调整作为时间和覆盖区域的函数的数据业务需求的通信有效载荷功率消耗。