公开(公告)号：US20080186900A1

公开(公告)日：2008-08-07

申请号：US11998856

申请日：2007-11-30

申请人： Chu-Rui Chang ,  Farhad Bassirat

发明人： Chu-Rui Chang ,  Farhad Bassirat

IPC分类号： H04B7/14

CPC分类号： H04B7/15557 ,  H04B7/14 ,  H04B7/15542 ,  H04B7/2606 ,  H04W72/1263 ,  H04W84/18 ,  H04W88/04 ,  H04W88/08

摘要： A wireless communications network includes a subscriber station acting as a relay station (or ad-hoc repeater) between another subscriber station (a child subscriber station) and a base station (BTS) when there is no LOS between the other subscriber station and the base station, but there is LOS between the other subscriber station and the relay station. The BTS divides each of the downlink (DL) and uplink (UL) sub-frames into P1 and P2 portions and schedules transmissions of child subscriber DL and UL data during P1 of the DL and UL frames (from the BTS), respectively. The relay station receives the child subscriber DL and UL data, stores the data, and transmits/forwards the child subscriber DL and UL data during P2 of the DL and UL frame (to the BTS), respectively.

摘要翻译： 无线通信网络包括在另一个用户站和基站（BTS）之间的另一个用户站（BTS）之间不存在LOS的作为中继站（或ad-hoc中继器）的用户站， 站，但在另一个用户站和中继站之间存在LOS。 在DL和UL帧（来自BTS）的P 1期间，BTS将下行链路（DL）和上行链路（UL）子帧中的每一个划分为P 1和P 2部分，并且调度子用户DL和UL数据的传输， 分别。 中继站接收子用户DL和UL数据，存储数据，并分别在DL和UL帧（到BTS）的P 2期间发送/转发子用户DL和UL数据。

公开(公告)号：US06745051B1

公开(公告)日：2004-06-01

申请号：US09612743

申请日：2000-07-10

申请人： Farhad Bassirat

发明人： Farhad Bassirat

IPC分类号： H04M100

CPC分类号： H01Q21/205 ,  H01Q1/1242 ,  H01Q1/246

摘要： An antenna structure which has a platform defining at least six sectors having a vertex contained substantially within the platform. At least six dual polarized antennas are positioned on the platform for transmitting and receiving signals substantially in each of the at least six sectors, respectively.

摘要翻译： 一种天线结构，其具有定义至少六个扇区的平台，其顶点基本上包含在该平台内。 至少六个双极化天线位于平台上，用于分别在至少六个扇区中的每一个中基本上发送和接收信号。

公开(公告)号：US06507741B1

公开(公告)日：2003-01-14

申请号：US08992588

申请日：1997-12-17

申请人： Farhad Bassirat

发明人： Farhad Bassirat

IPC分类号： H04Q722

CPC分类号： H04W36/08 ,  H04B7/15507 ,  H04W84/047

摘要： An RF repeater having a fixed or adjustable time delay inserted in the reverse path and/or forward path of the RF repeater is used in a first cell for improving hard handoff performance from the first cell to a second cell. Certain factors associated with the CDMA hard hand-off process effectively reduce the coverage area of the first cell, including the round-trip delay (RTD) uncertainty, the time needed to perform the hard hand-off process, and a higher forward link Eb/No requirement. Use of an RF repeater in accordance with the increases the effective coverage area of the first cell. The delayed signal from the RF repeater also allows the base station to determine the location of the subscriber station thereby identifying the particular adjacent cell to which the subscriber station will be switched (hard hand-off). A collocated base station is no longer required for the hard hand-off process and the utilization of beacons (when the source cell and the destination cell operate at different channel frequencies) is eliminated. The present invention further includes a method of adding a delay, using an RF repeater, to the reverse path and/or forward path signal(s) between a subscriber station and a base station.

摘要翻译： 在第一小区中使用具有插入在RF中继器的反向路径和/或前向路径中的固定或可调节时间延迟的RF中继器，用于提高从第一小区到第二小区的硬切换性能。 与CDMA硬切换过程相关的某些因素有效地减少了第一小区的覆盖区域，包括往返延迟（RTD）不确定性，执行硬切换过程所需的时间，以及较高的前向链路Eb /没有要求。 根据增加第一个单元的有效覆盖面积的RF中继器的使用。 来自RF中继器的延迟信号还允许基站确定用户站的位置，从而识别订户站将切换到的特定相邻小区（硬切换）。 硬切换过程和信标的使用（当源小区和目的小区在不同信道频率下工作时）不再需要并置的基站。 本发明还包括一种使用RF中继器将用户站和基站之间的反向路径和/或前向路径信号的延迟相加的方法。

公开(公告)号：US06430168B1

公开(公告)日：2002-08-06

申请号：US09420326

申请日：1999-10-18

申请人： Roderick James Djurkovic ,  Farhad Bassirat

发明人： Roderick James Djurkovic ,  Farhad Bassirat

IPC分类号： H04B700

CPC分类号： H04W52/343 ,  H04W16/32 ,  H04W36/04 ,  H04W36/30 ,  H04W48/12 ,  H04W52/32 ,  H04W52/346

摘要： In a hierarchical network system, at least one comparatively small underlay cell is embedded within a comparatively large overlay cell for the purpose of increasing the network capacity of certain area inside the overlay cell. The underlay cell is configured within an overlay cell to have both a traffic carrier and a pilot beacon, or a “Lantern,” carrier. The Lantern carrier, which comprises the Pilot, Paging and Sync channels, should be programmed to set its overhead power level to be lower than an overhead channel power level of the traffic carrier. Thus, the coverage or the footprint of the traffic carrier can always encompasses the footprint of the Lantern carrier. Hence, the quality of a traffic signal is always ensured when a mobile telecommunication unit (MU) is switched from the overlay cell to the underlay cell. When the MU is active, it will be switched to the underlay cell when it detects the Lantern carrier. When the MU is in an idle mode, a Global Service Redirection message in the Lantern carrier's paging channel directs the handoff to the traffic carrier. When the MU leaves the underlay cell, the wireless service is handed back to the overlay cell or other surrounding networks by going through steps directed by an Enhanced Hard Handoff (EHHO) protocol.

摘要翻译： 在分级网络系统中，为了增加覆盖小区内的某些区域的网络容量，至少一个相对较小的下层小区被嵌入在较大的覆盖小区内。 底层单元被配置在覆盖单元内以具有业务载波和导频信标，或“灯笼”载波。 包括导频，寻呼和同步信道的灯笼载波应编程为将其开销功率电平设置为低于业务载波的开销信道功率电平。 因此，运营商的覆盖范围或占地面积可以始终包含灯笼运营商的足迹。 因此，当移动电信单元（MU）从重叠小区切换到底层小区时，始终确保交通信号的质量。 当MU激活时，当它检测到灯笼载体时，它将被切换到底层单元。 当MU处于空闲模式时，灯笼载波的寻呼信道中的全局业务重定向消息指示切换到业务载波。 当MU离开底层单元时，通过执行由增强型硬切换（EHHO）协议指导的步骤将无线服务移交给覆盖单元或其他周围网络。

公开(公告)号：US07539162B2

公开(公告)日：2009-05-26

申请号：US10035846

申请日：2001-12-24

申请人： Chang-Gang Zhang ,  Farhad Bassirat ,  Martin Kendall

发明人： Chang-Gang Zhang ,  Farhad Bassirat ,  Martin Kendall

IPC分类号： H04W4/00

CPC分类号： H04W16/06 ,  H04W36/18

摘要： A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes. In subsequent operations when sufficient Walsh codes are available for servicing hand-off operations, a greater number, up to the maximum number of cells and sectors may again participate in hand-off of the mobile terminal.

摘要翻译： 蜂窝无线通信系统和操作方法管理沃尔什码，以便确保足够的沃尔什码可用于防止呼叫阻塞并支持额外的切换操作。 在初始操作条件下，蜂窝无线通信系统服务正常切换操作，其中最大数量的小区和扇区可以参与切换。 根据本发明的切换操作，参与移动终端切换的每个小区或扇区使用唯一的沃尔什码来覆盖其前向链路信号。 当可用于维护新呼叫的沃尔什码数量减少时，其达到或超过沃尔什码可用性阈值，可以参与越区切换的小区和扇区数量从最大数量减少。 参与的单元/扇区的数量导致释放或不使用某些沃尔什码。 在足够的沃尔什码可用于维修切换操作的后续操作中，更多的数量，直到最大数量的小区和扇区可以再次参与移动终端的越区切换。

公开(公告)号：US06721571B2

公开(公告)日：2004-04-13

申请号：US09738204

申请日：2000-12-15

申请人： Scott H. Tran ,  Farhad Bassirat ,  Chang-Gang Zhang ,  Kendall Martin

发明人： Scott H. Tran ,  Farhad Bassirat ,  Chang-Gang Zhang ,  Kendall Martin

IPC分类号： H04Q720

CPC分类号： H04W16/12 ,  H04W16/02 ,  H04W36/18 ,  H04W88/02

摘要： A wireless communication system infrastructure services wireless communications within a service coverage area. A digital enclosure includes a plurality of wireless communication processing components that perform digital processing functions. A plurality of radio enclosures couple to the digital enclosure via communication links and each service wireless communications within a corresponding geographic area of the service coverage area. During operation of the wireless communication system infrastructure, two radio enclosures of the plurality of radio enclosures share a communication processing component of the digital enclosure while jointly servicing a single wireless communication. The two radio enclosures reside at respective geographic locations that are separated by a geographic distance such that each of the radio enclosures services a respective cell. Each of the radio enclosures may service a plurality of sectors that form the cell. The digital enclosure couples to a base station controller, which in turn couples to a mobile switching center and, in some embodiments, to the Internet. Further, the mobile switching center couples to the public switched telephone network. During handoff of the wireless communication in a CDMA system from a first cell to a second cell, a core of the digital enclosure couples a channel element to a plurality of radio enclosures, each of which services a cell/sector(s) participating in the handoff. In one handoff operation in which six-way handoff is performed, the core couples a channel element of the digital enclosure to three radio modules, each of which services two sectors participating in the handoff.

摘要翻译： 无线通信系统基础设施服务范围内的无线通信。 数字机箱包括执行数字处理功能的多个无线通信处理组件。 多个无线电机箱经由通信链路耦合到数字机箱，并且在服务覆盖区域的相应地理区域内的每个服务无线通信。 在无线通信系统基础设施的操作期间，多个无线电机箱的两个无线电机箱在共同维修单个无线通信的同时共享数字机箱的通信处理部件。 两个无线电机箱驻留在以地理距离分开的相应地理位置处，使得每个无线电机箱服务相应的小区。 每个无线电机箱可以服务形成小区的多个扇区。 数字外壳耦合到基站控制器，基站控制器又耦合到移动交换中心，并且在一些实施例中耦合到因特网。 此外，移动交换中心耦合到公共交换电话网络。 在从第一小区到第二小区的CDMA系统中的无线通信切换期间，数字机箱的核心将信道单元耦合到多个无线电机箱，每个无线电机箱服务于参与该小区的扇区 不可触摸。 在执行六路切换的一个切换操作中，核心将数字机箱的信道元件耦合到三个无线电模块，每个无线电模块服务参与切换的两个扇区。

公开(公告)号：US6122513A

公开(公告)日：2000-09-19

申请号：US965279

申请日：1997-11-06

申请人： Farhad Bassirat

发明人： Farhad Bassirat

IPC分类号： H04W16/06 ,  H04Q7/20

CPC分类号： H04W16/06 ,  H04B7/2606 ,  H04W36/00 ,  H04W84/047

摘要： A method for extending hard-handoff boundaries within a mobile telephone communications network is disclosed. There are multiple cells within a CDMA cellular/PCS telephone communications network, in which some of the cells operate under two separate carrier frequencies. In order to extend the hard-handoff boundary of a boundary cell that operates under two carrier frequencies, a neighboring cell adjacent to the boundary cell but operating under only one of the two carrier frequencies of the boundary cell must first be located. Then, a repeater with a fixed or adjustable delay is placed between the boundary cell and the neighboring cell such that the hard-handoff boundary of the boundary cell is extended.

摘要翻译： 公开了一种用于在移动电话通信网络内扩展硬切换边界的方法。 在CDMA蜂窝/ PCS电话通信网络内有多个小区，其中一些小区在两个独立的载波频率下工作。 为了扩展在两个载波频率下工作的边界单元的硬切换边界，必须首先定位与边界单元相邻但仅在边界单元的两个载波频率之一下工作的相邻单元。 然后，具有固定或可调延迟的中继器被放置在边界单元和相邻单元之间，使得边界单元的硬切换边界被扩展。

公开(公告)号：US08717965B2

公开(公告)日：2014-05-06

申请号：US11998856

申请日：2007-11-30

申请人： Chu-Rui Chang ,  Farhad Bassirat

发明人： Chu-Rui Chang ,  Farhad Bassirat

IPC分类号： H04B7/14 ,  H04B7/155 ,  H04W72/12 ,  H04B7/26

CPC分类号： H04B7/15557 ,  H04B7/14 ,  H04B7/15542 ,  H04B7/2606 ,  H04W72/1263 ,  H04W84/18 ,  H04W88/04 ,  H04W88/08

摘要： A wireless communications network includes a subscriber station acting as a relay station (or ad-hoc repeater) between another subscriber station (a child subscriber station) and a base station (BTS) when there is no LOS between the other subscriber station and the base station, but there is LOS between the other subscriber station and the relay station. The BTS divides each of the downlink (DL) and uplink (UL) sub-frames into P1 and P2 portions and schedules transmissions of child subscriber DL and UL data during P1 of the DL and UL frames (from the BTS), respectively. The relay station receives the child subscriber DL and UL data, stores the data, and transmits/forwards the child subscriber DL and UL data during P2 of the DL and UL frame (to the BTS), respectively.

摘要翻译： 无线通信网络包括在另一个用户站和基站（BTS）之间的另一个用户站（BTS）之间不存在LOS的作为中继站（或ad-hoc中继器）的用户站， 站，但在另一个用户站和中继站之间存在LOS。 BTS将下行链路（DL）和上行链路（UL）子帧中的每一个分成P1和P2部分，并分别在DL和UL帧（来自BTS）的P1期间调度子用户DL和UL数据的传输。 中继站接收子用户DL和UL数据，存储数据，并分别在DL和UL帧（到BTS）的P2期间发送/转发子用户DL和UL数据。

公开(公告)号：US08050234B2

公开(公告)日：2011-11-01

申请号：US12471122

申请日：2009-05-22

申请人： Chang-Gang Zhang ,  Farhad Bassirat ,  Martin Kendall

发明人： Chang-Gang Zhang ,  Farhad Bassirat ,  Martin Kendall

IPC分类号： H04W4/00

CPC分类号： H04W16/06 ,  H04W36/18

摘要： A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes. In subsequent operations when sufficient Walsh codes are available for servicing hand-off operations, a greater number, up to the maximum number of cells and sectors may again participate in hand-off of the mobile terminal.

摘要翻译： 蜂窝无线通信系统和操作方法管理沃尔什码，以便确保足够的沃尔什码可用于防止呼叫阻塞并支持额外的切换操作。 在初始操作条件下，蜂窝无线通信系统服务正常切换操作，其中最大数量的小区和扇区可以参与切换。 根据本发明的切换操作，参与移动终端切换的每个小区或扇区使用唯一的沃尔什码来覆盖其前向链路信号。 当可用于维护新呼叫的沃尔什码数量减少时，其达到或超过沃尔什码可用性阈值，可以参与越区切换的小区和扇区的数量从最大数量减少。 参与的单元/扇区的数量导致释放或不使用某些沃尔什码。 在足够的沃尔什码可用于维修切换操作的后续操作中，更多的数量，直到最大数量的小区和扇区可以再次参与移动终端的越区切换。

公开(公告)号：US20050041612A1

公开(公告)日：2005-02-24

申请号：US10035846

申请日：2001-12-24

申请人： Chang-Gang Zhang ,  Farhad Bassirat ,  Martin Kendall

发明人： Chang-Gang Zhang ,  Farhad Bassirat ,  Martin Kendall

IPC分类号： H04W16/06 ,  H04W36/18 ,  H04J11/00

CPC分类号： H04W16/06 ,  H04W36/18

摘要： A cellular wireless communication system and method of operation manages Walsh codes in order to ensure that sufficient Walsh codes are available to prevent call blocking and to support additional hand-off operations. In an initial operating condition, the cellular wireless communication system services normal hand-off operations in which a maximum number of cells and sectors may participate in hand-off. With hand-off operations according to the present invention, each cell or sector participating in hand-off for a mobile terminal uses a unique Walsh code for covering its forward link signals. When the number of Walsh codes available for servicing new calls is reduced so that it meets or exceeds a Walsh code availability threshold, the number of cells and sectors that may participate in hand-off is reduced from the maximum number. In the number of participating cells/sectors results in release or non-use of some Walsh codes. In subsequent operations when sufficient Walsh codes are available for servicing hand-off operations, a greater number, up to the maximum number of cells and sectors may again participate in hand-off of the mobile terminal.

摘要翻译： 蜂窝无线通信系统和操作方法管理沃尔什码，以便确保足够的沃尔什码可用于防止呼叫阻塞并支持额外的切换操作。 在初始操作条件下，蜂窝无线通信系统服务正常切换操作，其中最大数量的小区和扇区可以参与切换。 根据本发明的切换操作，参与移动终端切换的每个小区或扇区使用唯一的沃尔什码来覆盖其前向链路信号。 当可用于维护新呼叫的沃尔什码数量减少时，其达到或超过沃尔什码可用性阈值，可以参与越区切换的小区数目和扇区数量从最大数量减少。 参与的单元/扇区的数量导致释放或不使用某些沃尔什码。 在足够的沃尔什码可用于维修切换操作的后续操作中，更多的数量，直到最大数量的小区和扇区可以再次参与移动终端的越区切换。