公开(公告)号：US20070002795A1

公开(公告)日：2007-01-04

申请号：US11172218

申请日：2005-06-29

申请人： Qi Bi ,  Hoo-Yin Khoe ,  David Rossetti ,  Sigen Ye ,  Qinqing Zhang

发明人： Qi Bi ,  Hoo-Yin Khoe ,  David Rossetti ,  Sigen Ye ,  Qinqing Zhang

IPC分类号： H04Q7/00

CPC分类号： H04W28/22 ,  H04W74/0866

摘要： The present invention may provide a method of communication that includes selecting at least one access channel for transmission of data based on a channel condition. The present invention may also provide a method of communication that includes receiving data over at least one access channel selected for transmission based on a channel condition.

摘要翻译： 本发明可以提供一种通信方法，其包括基于信道状况选择至少一个接入信道来传输数据。 本发明还可以提供一种通信方法，其包括基于信道条件，通过至少一个被选择用于传输的接入信道接收数据。

公开(公告)号：US06944466B2

公开(公告)日：2005-09-13

申请号：US10864001

申请日：2004-06-09

申请人： Qi Bi ,  Wen-Yi Kuo

发明人： Qi Bi ,  Wen-Yi Kuo

IPC分类号： H04W64/00 ,  H04Q7/20

CPC分类号： H04W64/00

摘要： Methods and apparatus for estimating mobile station location in a wireless communication system. At initiation of a call or a page response, a mobile station of the system sends an access request signal to a primary base station. The primary base station responds with an access acknowledgment which may be intentionally delayed such that the mobile station increases its transmit power level. The primary base station then transmits a channel assignment message to the mobile station. The mobile station responds by transmitting a location signal in the form of a known user-specific traffic preamble at the higher transmit power level. The primary base station intentionally delays sending an acknowledgment of the preamble, such that the mobile station transmits the preamble for a longer period of time than it would otherwise. This additional transmission time allows the preamble to be detected accurately in the primary base station as well as in a number of other surrounding base stations in a manner suitable for generating path delay measurements. A primary location processor associated with the primary base station uses the path delay measurements from the primary and surrounding base stations to generate an estimate of mobile location. The mobile location estimation may be provided during an on-going call by the primary base station sending a fake handoff message to the mobile station directing it to handoff to the same base station and traffic channel but with a different power level and preamble length, or by the primary base station sending a predetermined location probe message directing the mobile station to transmit the traffic preamble with a desired power level and preamble length.

摘要翻译： 用于估计无线通信系统中的移动台位置的方法和装置。 在开始呼叫或寻呼响应时，系统的移动台向主基站发送接入请求信号。 主基站用可能有意延迟的接入确认进行响应，使得移动台增加其发射功率电平。 然后，主基站向移动台发送信道分配消息。 移动台通过以较高发射功率电平以已知的用户特定业务前导码的形式发送位置信号进行响应。 主基站有意地延迟发送对前同步码的确认，使得移动站发送比其它方式更长的时间段。 该附加传输时间允许在适合于生成路径延迟测量的方式中，在主基站以及多个其它周围基站中准确地检测前导码。 与主基站相关联的主位置处理器使用来自主基站和周围基站的路径延迟测量来生成移动位置的估计。 移动位置估计可以在主基站正在进行的呼叫期间提供，该主基站向移动台发送假切换消息，指示它切换到相同的基站和业务信道，但具有不同的功率电平和前导码长度，或者 由主基站发送指示移动台以期望功率电平和前导码长度发送业务前同步码的预定位置探测消息。

公开(公告)号：US06374099B1

公开(公告)日：2002-04-16

申请号：US09307911

申请日：1999-05-10

申请人： Qi Bi ,  Ching Yao Huang ,  Frances Jiang ,  Yuen-Yin L. Koo ,  Amit Shah

发明人： Qi Bi ,  Ching Yao Huang ,  Frances Jiang ,  Yuen-Yin L. Koo ,  Amit Shah

IPC分类号： H04M1100

CPC分类号： H04W48/06 ,  H04W4/90 ,  H04W76/50

摘要： A high priority and/or emergency overload access control system treats a wireless unit as a higher priority wireless unit when the wireless unit is attempting to access a wireless communications system with a high priority call, such as an emergency call. For example, the overload access control system can recognize if the wireless unit is attempting to initiate a call to an emergency number. If so, the wireless unit can perform a persistence test as an emergency class (e.g. overload class 10-15) wireless unit in attempting to access the wireless communications system. Thus, the wireless unit will experience an increased probability of passing the persistence test and thereby reducing the persistence delay in attempting to access the wireless communications system with the emergency call.

摘要翻译： 当无线单元试图访问诸如紧急呼叫的高优先级呼叫的无线通信系统时，高优先级和/或紧急过载接入控制系统将无线单元视为较高优先级的无线单元。 例如，过载访问控制系统可以识别无线单元是否尝试发起对紧急号码的呼叫。 如果是这样，则无线单元可以在尝试访问无线通信系统时作为紧急类（例如，过载类10-15）无线单元执行持久性测试。 因此，无线单元将经历增加的持久性测试的概率，从而减少尝试在紧急呼叫中访问无线通信系统时的持续延迟。

公开(公告)号：US5970414A

公开(公告)日：1999-10-19

申请号：US866901

申请日：1997-05-30

申请人： Qi Bi ,  Wen-Yi Kuo ,  Sirin Tekinay

发明人： Qi Bi ,  Wen-Yi Kuo ,  Sirin Tekinay

IPC分类号： G01S5/00 ,  G01S5/14 ,  G01S19/25 ,  H04W64/00 ,  H04B1/06

CPC分类号： H04W64/00 ,  G01S5/0036 ,  G01S5/14 ,  G01S2205/008 ,  Y02B60/50

摘要： The present invention is a method for accurately estimating a location of a mobile-telephone using forward link power control. In one embodiment, the present invention comprises the steps of transmitting first, second and third signals from first, second and third base stations during first, second and third time intervals; decreasing the power level of the first base station during at least portions of the second and third time intervals; receiving a mobile-telephone signal having receive information indicating times-of-arrivals of the first, second and third signals at the mobile-telephone; and estimating a location of the mobile-telephone using the receive information and known locations of the first, second and third base stations. Advantageously, this embodiment of the present invention actually decreases the interference level contribution of the first base station, and requires little change to the network side of existing wireless communication standards and no change to the mobile-telephone side.

摘要翻译： 本发明是一种使用前向链路功率控制精确地估计移动电话的位置的方法。 在一个实施例中，本发明包括在第一，第二和第三时间间隔期间从第一，第二和第三基站发送第一，第二和第三信号的步骤; 在第二和第三时间间隔的至少部分期间，降低第一基站的功率电平; 接收具有指示移动电话上的第一，第二和第三信号的到达时间的接收信息的移动电话信号; 以及使用接收信息和第一，第二和第三基站的已知位置估计移动电话的位置。 有利地，本发明的该实施例实际上降低了第一基站的干扰等级贡献，并且对现有无线通信标准的网络侧几乎没有变化，并且对移动电话侧没有变化。

公开(公告)号：US5483236A

公开(公告)日：1996-01-09

申请号：US169939

申请日：1993-12-20

申请人： Qi Bi

发明人： Qi Bi

IPC分类号： H03M13/00 ,  H03M13/15 ,  H04L1/00 ,  H04L27/00

CPC分类号： H03M13/151

摘要： The present invention is a reduced iteration decoder circuit and method to compute error-locator sequence values for use in the correction of bit errors in Reed-Solomon or BCH coded information. By utilizing special properties of Reed-Solomon code and BCH codes, the decoder circuit of the present invention can detect n symbol errors using approximately n mathematical iterations with substantially reduced decoding processing time. A further reduction of decoding time is achieved by the performance of a substantial portion of the decoding processing in a parallel manner. The present invention may be utilized in digital communication systems and data storage systems or other information systems where Reed-Solomon or BCH encoding is utilized.

摘要翻译： 本发明是一种减少的迭代解码器电路和计算误差定位器序列值的方法，用于校正里德 - 所罗门或BCH编码信息中的比特误差。 通过利用里德 - 所罗门码和BCH码的特殊性质，本发明的解码器电路可以使用大体上减少的解码处理时间的大约n个数学迭代来检测n个符号误差。 通过以并行方式执行大部分解码处理来实现解码时间的进一步减少。 本发明可以用于利用里德 - 所罗门或BCH编码的数字通信系统和数据存储系统或其他信息系统。

公开(公告)号：US5345468A

公开(公告)日：1994-09-06

申请号：US991841

申请日：1992-12-16

申请人： Qi Bi

发明人： Qi Bi

IPC分类号： H04Q7/38 ,  H04B1/7105 ,  H04K1/02 ,  H04K1/00

CPC分类号： H04B1/71052 ,  H04K1/02

摘要： Despreading of the received signal in a CDMA system is provided using code coefficient sequences which are derived from those utilized by the system users to encode their respective symbols. Each derived code coefficient sequence is a function of the correlation between a different user's code coefficient sequence and the code coefficient sequences of all other users. Advantageously, this technique substantially reduces interference effects and is suitable for use in the despreader of differentially or nondifferentially coded CDMA systems.

摘要翻译： 使用从系统用户对其各自的符号进行编码的代码系数序列导出的码系数序列来提供CDMA系统中的接收信号的解扩。 每个派生代码系数序列是不同用户代码系数序列与所有其他用户的代码系数序列之间的相关性的函数。 有利地，该技术基本上减少了干扰效应，并且适用于差分或非差分编码的CDMA系统的解扩器。

公开(公告)号：US08665801B2

公开(公告)日：2014-03-04

申请号：US12007206

申请日：2008-01-08

申请人： Qi Bi ,  Stan Vitebsky ,  Yang Yang

发明人： Qi Bi ,  Stan Vitebsky ,  Yang Yang

IPC分类号： H04W72/04

CPC分类号： H04W74/0841 ,  H04L1/16 ,  H04W48/12

摘要： In one embodiment the method includes allocating, for a mobile, forward link resources for transmitting data over a shared forward link data channel without allocating reverse link resources for reverse link data transmission in association with the allocated forward link resources. At least a portion of the received data is repeatedly sent to the mobile on the shared forward link data channel over a time division multiple access air interface using the allocated forward link resources until an acknowledgement is received from the mobile or a number of transmissions have taken place.

摘要翻译： 在一个实施例中，该方法包括为移动通过共享的前向链路数据信道分配用于发送数据的前向链路资源，而不分配用于与所分配的前向链路资源相关联的反向链路数据传输的反向链路资源。 接收到的数据的至少一部分在共享的前向链路数据信道上通过使用所分配的前向链路资源的时分多址空中接口重复地发送到移动台，直到从移动台接收到确认或已经采用多个传输 地点。

公开(公告)号：US08331941B2

公开(公告)日：2012-12-11

申请号：US11125980

申请日：2005-05-10

申请人： Qi Bi ,  Terry Si-Fong Cheng ,  Frances Jiang ,  Ramakrishna Vishnuvajjala ,  Tomas S. Yang

发明人： Qi Bi ,  Terry Si-Fong Cheng ,  Frances Jiang ,  Ramakrishna Vishnuvajjala ,  Tomas S. Yang

IPC分类号： H04W36/00

CPC分类号： H04W36/0055 ,  H04W36/18

摘要： The present invention provides a method of wireless communication using a mobile unit and first and second base stations. The method includes receiving, from the second base station, a notification of a switch of the first base station to the second base station. The method also includes providing at least one message to the second base station in response to receiving the notification.

摘要翻译： 本发明提供一种使用移动单元和第一和第二基站的无线通信的方法。 该方法包括从第二基站接收第一基站的切换到第二基站的通知。 该方法还包括响应于接收到通知而向第二基站提供至少一个消息。

公开(公告)号：US08098757B2

公开(公告)日：2012-01-17

申请号：US11255803

申请日：2005-10-21

申请人： Qi Bi ,  Sinan Gezici ,  Lei Song ,  Yifei Yuan

发明人： Qi Bi ,  Sinan Gezici ,  Lei Song ,  Yifei Yuan

IPC分类号： H04L27/10

CPC分类号： H04L25/03834 ,  H04L27/2626

摘要： The present invention provides a method of windowing signals in a communication system. The method includes accessing at least one first signal associated with at least one of a plurality of orthogonal frequencies and applying a window function to the at least one first signal to form at least one second signal. The at least one second signal remains substantially orthogonal to signals associated with the plurality of orthogonal frequencies.

摘要翻译： 本发明提供了一种在通信系统中加窗信号的方法。 该方法包括访问与多个正交频率中的至少一个相关联的至少一个第一信号，并且将至少一个第一信号应用于窗口函数以形成至少一个第二信号。 所述至少一个第二信号保持与所述多个正交频率相关联的信号基本正交。

公开(公告)号：US07990855B2

公开(公告)日：2011-08-02

申请号：US12218155

申请日：2008-07-11

申请人： Qi Bi ,  Yang Yang ,  Sigen Ye

发明人： Qi Bi ,  Yang Yang ,  Sigen Ye

IPC分类号： H04W28/02

CPC分类号： H04W28/02 ,  H04W28/08

摘要： A system for joint reverse link access and traffic channel overload control in a cellular network includes relieving the reverse link total loading to optimize resource utilization and distribution among different types of mobile device users. The cellular network includes a plurality of mobile stations that wirelessly communicate with a base station over a reverse link, using a CDMA or similar communications protocol. A joint access and traffic overload control module creates an access channel load relief plan, a traffic channel load relief plan and then relieves the total loading of the reverse link based upon both the access channel load relief plan and the traffic channel load relief plan.

摘要翻译： 用于蜂窝网络中的联合反向链路接入和业务信道过载控制的系统包括减轻反向链路总负载，以优化不同类型的移动设备用户之间的资源利用和分配。 蜂窝网络包括使用CDMA或类似通信协议通过反向链路与基站无线通信的多个移动站。 联合接入和流量过载控制模块创建接入信道负载救援计划，业务信道负载救援计划，然后基于接入信道负载救援计划和业务信道负载救援计划来减轻反向链路的总负载。