公开(公告)号：EP1198965A1

公开(公告)日：2002-04-24

申请号：EP00950522.3

申请日：2000-07-20

申请人： QUALCOMM INCORPORATED

发明人： JOU, Yu-Cheun ,  TIEDEMANN, Edward, G., Jr.

IPC分类号： H04Q7/38

CPC分类号： H04L1/20 ,  H01L23/53295 ,  H01L24/02 ,  H01L2924/01004 ,  H01L2924/01006 ,  H01L2924/01013 ,  H01L2924/01014 ,  H01L2924/01019 ,  H01L2924/01027 ,  H01L2924/01033 ,  H01L2924/01067 ,  H01L2924/01074 ,  H01L2924/01075 ,  H04B17/26 ,  H04B17/318 ,  H04B17/327 ,  H04B17/336 ,  H04L1/201 ,  H04W36/08 ,  H04W48/20 ,  H04W52/0216 ,  H04W52/0245 ,  H04W72/08 ,  H04W88/02 ,  Y02D70/25

摘要： A method and apparatus for supervising a dedicated control channel when in the discontinuous transmission mode. The mobile station (4) receives a pilot strength measurement for each pilot signal contained in an active set of base stations and an aggregate of the pilot strength measurements is determined. An average for the aggregate is determined over a selected time interval and the remote station transmitter is disabled if said average is below a threshold for a designated time (T1). The received transmission may be deemed terminated if the average is below the threshold for a second designated time (T2), where T2 > T1.

摘要翻译： 一种用于在不连续传输模式下监视专用控制信道的方法和装置。 移动站（4）接收针对包含在基站的有源集合中的每个导频信号的导频强度测量，并确定导频强度测量的集合。 在所选择的时间间隔内确定聚合的平均值，并且如果所述平均值低于指定时间（T1）的阈值，则远程站发射机被禁用。 如果平均值低于第二指定时间（T2）的阈值，则其中T2> T1，所接收的传输可以被认为是终止的。

公开(公告)号：EP1155589A1

公开(公告)日：2001-11-21

申请号：EP00912035.3

申请日：2000-02-25

申请人： QUALCOMM Incorporated

发明人： TIEDEMANN, Edward, G., Jr. ,  TERASAWA, Daisuke ,  SARKAR, Sandip ,  JOU, Yu-Cheun ,  ODENWALDER, Joseph, P. ,  SHANBHAG, Abihijt ,  WILLENEGGER, Serge

IPC分类号： H04Q7/38

CPC分类号： H04W36/0094 ,  H04B1/70735 ,  H04J3/0638 ,  H04J3/0682 ,  H04W56/0015 ,  H04W56/0055

摘要： A method and system that enables faster acquisition of the forward link signal of a target base station in a mixed network of synchonous and asynchronous base stations is disclosed. The serving base station transmits in a neighbor list an estimated timing error (417) between the serving base station and a target base station. By utilizing the timing information, a mobile station estimates the relative time offset (408) between forward link signals received from the serving base station and signals received from the target base station. Timing information acquired during handoff enables accurate updating of the estimated timing error (417) subsquently transmitted in the neighbor lists by the base stations.

公开(公告)号：EP1135875A2

公开(公告)日：2001-09-26

申请号：EP99965114.4

申请日：1999-12-03

申请人： QUALCOMM Incorporated

发明人： WALLACE, Mark, S. ,  TIEDEMANN, Edward, G., Jr. ,  WHEATLEY, Charles, E., III ,  WALTSON, J., Rod

IPC分类号： H04B7/26

CPC分类号： H04B7/2696

摘要： When insufficient traffic is present in the network to maintain synchronization in this manner, other methods must be used. One approach involves making direct measurements of the timing between base stations (602, 604). This is accomplished in one of two ways. The base may interrupt its transmissions on all sectors for a short interval during which it determines the time of arrival of signals from other base stations (602, 604). Given knowledge of the other base station locations, time errors relative to all other base stations (602, 604) may be derived. Alternatively, the base may send a short signal at high power in the mobile transmit band. This time-of-arrival of this signal is measured by the surrounding base stations and the time errors between pairs of base stations are computed. In some cases, a base station (602, 604) may be isolated sufficiently from all other base stations in the network such that direct base-to-base measurement is not viable. In this case, a fixed mobile (606) is placed at a location in the handoff region between the isolated cell and another cell in the network. The fixed mobile (606) either performs measurements of base station pilots on command of the base and reports the timing information, or sends a burst transmission at a specified time and power level to be measured by the base stations.

公开(公告)号：EP1119922A1

公开(公告)日：2001-08-01

申请号：EP99954885.2

申请日：1999-10-12

申请人： QUALCOMM Incorporated

发明人： BUTLER, Brian, K. ,  ZHANG, Haitao ,  TIEDEMANN, Edward, G., Jr. ,  ZOU, Qiuzhen ,  SIH, Gilbert, C. ,  AGRAWAL, Avneesh

IPC分类号： H04B1/707 ,  H04Q7/32

CPC分类号： H04B1/70751 ,  H04B1/7077 ,  H04B1/70775 ,  H04B1/7115 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04W52/0229 ,  Y02D70/40

摘要： A novel and improved method for performing paging is described. In one embodiment of the invention a searcher is used to detect spread spectrum signals. Samples received RF signals are stored in a sample buffer. During standby mode, the samples are gathered during paging slots assigned to the mobile. A set of searches are performed on the samples, and if pilot signals are detected additional demodulation is performed to detect paging messages. The resulting set of demodulation data may be combined to increase detection. After a page message has been detected, additional demodulation resources may be activated to processes more complete page messages, or other information channels. In one embodiment of the invention, the searcher includes a demodulator to perform quick page detection without the use of finger elements to reduce idle mode power consumption.

摘要翻译： 描述了用于执行寻呼的新颖且改进的方法。 在本发明的一个实施例中，搜索器用于检测扩频信号。 将接收到的射频信号样本存储在样本缓冲区中。 在待机模式下，样本在分配给移动台的寻呼时隙期间收集。 对样本执行一组搜索，并且如果检测到导频信号，则执行额外的解调以检测寻呼消息。 所得到的一组解调数据可以被组合以增加检测。 在检测到寻呼消息之后，可以激活附加的解调资源以处理更完整的寻呼消息或其他信息信道。 在本发明的一个实施例中，搜索器包括解调器，以执行快速页面检测而不使用手指元素来减少空闲模式功耗。

公开(公告)号：EP1033005A1

公开(公告)日：2000-09-06

申请号：EP98957886.9

申请日：1998-11-12

申请人： QUALCOMM Incorporated

发明人： CHEN, Tao ,  ODENWALDER, Joseph, P. ,  TIEDEMANN, Edward, G., Jr. ,  WILLENEGGER, Serge

IPC分类号： H04L1/18

CPC分类号： H04L1/0059 ,  H04L1/0001 ,  H04L1/0002 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0054 ,  H04L1/0068 ,  H04L1/0069 ,  H04L1/0071 ,  H04L1/08 ,  H04L1/1809 ,  H04L1/1816 ,  H04L1/1819 ,  H04L1/1825 ,  H04L1/1845 ,  H04L1/1867 ,  H04L1/1893 ,  H04W52/44

摘要： In a method for efficient retransmission of data, symbol accumulation is used to retransmit a packet received in error at a lower energy-per-bit level concurrently in the same frame with a new packet. The destination device receives the data transmission and retransmission, demodulates the signal, and separates the received data into the new and retransmitted packet. The destination device then accumulates the energy of the retransmitted packet with the energy already accumulated for the packet received in error and decodes the accumulated packet. The accumulation of the additional energy provided by the subsequent retransmissions improves the probability of a correct decoding. The throughput rate can be improved since the packet received in error is retransmitted concurrently with the transmission of the new data packet. The capacity is maximized since the retransmission of the packet received in error is at a lower energy level than that of the new packet. The method includes puncturing the code symbols of a data packet for transmission in accordance with a first puncturing pattern. If decoding of the punctured transmitted packet of data is unsuccessful, a negative acknowledgement is received at the source device and the code symbols of the data packet are then punctured in accordance with a second pattern for transmission in response to the receipt of the negative acknowledgement.

公开(公告)号：EP0956679A2

公开(公告)日：1999-11-17

申请号：EP97954204.0

申请日：1997-12-19

申请人： QUALCOMM INCORPORATED

发明人： TIEDEMANN, Edward, G., Jr. ,  CHEN, Tao ,  WHEATLEY, Charles, E., III

IPC分类号： H04L12 ,  H04W36

CPC分类号： H04W36/0094 ,  H04W36/0061 ,  H04W36/0066 ,  H04W36/14 ,  H04W36/30 ,  Y02D70/00

摘要： A method and apparatus for performing inter-system hard handoff between communication systems or inter-frequency hard handoff within a CDMA communication system is disclosed. The purpose of this invention is to reduce the probability of dropped calls during inter-system hard handoff. In the event that a hard handoff attempt is unsuccessful, the mobile station will return to the original system with information which the communication system of the present invention uses to assist in the performance of future handoff attempts. Alternatively, with no handoff attempt made, the mobile station monitors the destination system then returns to the original system with information used to assist in subsequent handoff attempts. The information returned from monitoring a CDMA system consists of results of a search for one or more pilots given at offsets in a specific list provided to the mobile station by the base station or a set of offsets based upon a predetermined search algorithm.

摘要翻译： 一种用于CDMA通信系统内进行通信的系统或频率间硬越区切换之间的系统间硬越区切换的方法和装置游离缺失盘。 本发明的目的是为了减少系统间硬切换期间掉话的概率。 在事件做了硬切换尝试不成功，移动台将返回到与信息的原始系统，本发明的通信系统使用，以帮助未来的切换尝试的性能。 可替代地，与由没有切换尝试时，移动站监视目标系统然后返回到与信息的原始系统用于辅助越区切换的后续尝试。 的信息从监视在由基站或一组基于预定搜索算法的偏移提供给移动台的特定列表在偏移给定的一个或更多个导频的搜索的结果的CDMA系统besteht返回。

公开(公告)号：EP0956672A2

公开(公告)日：1999-11-17

申请号：EP97953368.0

申请日：1997-12-19

申请人： QUALCOMM INCORPORATED

发明人： ODENWALDER, Joseph, P. ,  ANTONIO, Franklin, P. ,  TIEDEMANN, Edward, G., Jr. ,  JOU, Yu-Cheun

IPC分类号： H04L ,  H04B1 ,  H04B7 ,  H04J11 ,  H04L1

CPC分类号： H04B1/707 ,  H04B7/264 ,  H04J13/0003 ,  H04J13/0048 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/0067 ,  H04L1/08 ,  H04L2001/0093

摘要： A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set (90) and a quadrature-phase channel set (92). The in-phase channel set (90) is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel (92) set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel are generated using a set of long channel codes.

公开(公告)号：EP0943185A1

公开(公告)日：1999-09-22

申请号：EP97952467.0

申请日：1997-12-11

申请人： QUALCOMM INCORPORATED

发明人： ZEHAVI, Ephraim ,  TIEDEMANN, Edward, G., Jr. ,  SAINTS, Keith, W.

IPC分类号： H04J13 ,  H04B7 ,  H04B14

CPC分类号： H04W52/143 ,  H04W52/146

摘要： A subchannel within a CDMA signal is provided together with a system for receiving and decoding this subchannel. A message is transmitted over the subchannel by applying a sequence of phase rotations to the user data. A single subchannel message can be transmitted during each 1.25 ms segment of user data, resulting in transmission rates of up to 800 messages per second over the subchannel. Each message corresponds to a fixed sequence of phases, called a phase codeword, used to rotate the user data each time that message is sent. When only two phase codewords are used, the effective data rate for the subchannel is 800 bits per second, but higher data rates may be achieved by increasing the number of codewords used by the subchannel. The subchannel may be decoded by correlating the user data with each of the possible phase codewords.

公开(公告)号：EP0906675A1

公开(公告)日：1999-04-07

申请号：EP97929979.0

申请日：1997-06-11

申请人： QUALCOMM INCORPORATED

发明人： GROB, Matthew, S. ,  TIEDEMANN, Edward, G., Jr. ,  KUDRIMOTI, Abhijit

IPC分类号： H04L9 ,  H04B7 ,  H04J3 ,  H04L7 ,  H04Q7

CPC分类号： H04L7/0083 ,  H04J3/0632

摘要： Synchronization and bit count integrity of a synchronous data stream is preserved end to end even as it is transmitted via a medium which does not preserve the synchronous nature of the synchronous data stream. A terminal equipment unit (100) produces a constant rate bit stream which is provided to a communications unit (110). The communications unit (110) produces a first data frame comprising a first set of bits from the constant rate bit stream and a first length field value. A second data frame is produced which comprises a second set of bits from the constant rate bit stream and a second length field. A third data frame is produced which comprises a third set of bits from the constant rate bit stream and a third length field value. The first, second, and third data frames are transmitted to a base unit (118) which places the first set of bits from the first frame into a queue (150). A set of fill bits equal to the maximum number of bits contained in any frame is then placed into the queue (150). The base unit (118) then determines the number of bits in the second set of bits of the third data frame, based on the first length field value and the third length field value. The base unit (118) overwrites excess fill bits in the queue (150) with the third set of bits. The number of excess fill bits is equal to the difference between the maximum possible number of bits which may be contained in any frame and the number of bits in the second set of bits.

公开(公告)号：EP0903053A1

公开(公告)日：1999-03-24

申请号：EP97929849.0

申请日：1997-06-06

申请人： QUALCOMM INCORPORATED

发明人： TIEDEMANN, Edward, G., Jr.

IPC分类号： H04B7 ,  H04W48 ,  H04W36

CPC分类号： H04W48/20 ,  H04W36/0083 ,  H04W36/18 ,  H04W48/10 ,  H04W72/085

摘要： A method and apparatus which permits handoffs while the mobile station (2) is in the system access state. This is achieved by providing for channel assignment messages to be sent over the paging channel of a plurality of base stations (26), which increases the probability of one of the messages getting through. In addition, this assures the mobile station (2) will be able to handoff to a different base station (26) and have a traffic channel allocated to it on the new base station (26) without delay. In addition, a method and apparatus which permits the mobile station (2) to be directly assigned into a soft handoff state upon traffic channel assignment.